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THOME, ANTONIO MARCIO TAVARES. "CLASSIFICATION AND INVENTORY MANAGEMENT OF RETAIL PRODUCTS: A CASE STUDY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14320@1.
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Estoques ocupam um lugar central na economia e nas empresas
contemporâneas. Novos paradigmas surgem na gestão de estoques, cada vez mais
percebidos como elemento estratégico para a criação de valor na cadeia de
suprimento. Estoques passaram a constituir um elemento chave na busca constante
por vantagens competitivas entre empresas. Esta dissertação revê os principais
conceitos e definições de estoques de produtos acabados. Modelos, heurísticas e
políticas de estoques aplicadas a sistemas de distribuição de produtos de varejo
envolvendo vários produtos, Um almoxarifado e N revendedores, são definidos.
Métodos de agrupamento de itens em classes ABC homogêneas são revistos e
ilustrados com aplicações numéricas a produtos do ramo farmacêutico. São
definidos os principais modelos e políticas de gestão de estoques adequados às
diferentes classes de produtos do estudo de caso. A lógica de ressuprimentos
coordenados de produtos de varejo em cadeias de suprimento de elos múltiplos é
apresentada com a ajuda de exemplos. Finalmente, políticas alternativas de
estoques para diferentes classes de produtos em sistemas de distribuição
divergentes são apresentadas. Aspectos práticos ligados à implantação de modelos
matemáticos e políticas de estoques em redes de varejo são enfatizados na
conclusão do trabalho.Inventories are a central piece in contemporary economies and businesses. New paradigms appear in the area of inventory management, which is being increasingly perceived as a strategic element for value creation in supply chains. Inventories became a key element in the constant search for competitive advantages among companies. This dissertation reviews the main concepts and definitions of inventories as applied to finished products. Inventory models, heuristics and policies for distribution systems of retail products involving several products, One-warehouse and N retailers, are defined. Methods designed to regroup items in ABC classes are reviewed and illustrated by numerical applications to pharmaceutical products. The main models and inventory control policies adapted to different classes of products from the case study are defined. The logic of coordinated resupply of retail products in multi-echelon supply chains is presented with examples. Finally, alternative inventory policies for different classes of products in divergent distribution systems are presented. Practical aspects related to the implementation of mathematical models and policies in retail supply chains are emphasized in the conclusion of this work.
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Zowid, Fauzi Mohammed. "Development and performance evaluation of multi-criteria inventory classification methods." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0331.
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Cette thèse traite du problème de la classification des produits dans les systèmes de gestion de stock. Plus précisément, elle vise à proposer de nouvelles méthodes de classification pour résoudre le problème de la classification multicritères des produits en stock (MCIC). Actuellement, la méthode ABC de classification des produits en stock est largement utilisée pour rationaliser les systèmes de gestion de stock composés de milliers de produits (SKU). Les méthodes de classification des stocks ABC à un seul critère sont souvent utilisées dans la pratique et, récemment, les MCIC ont également attiré l’attention des chercheurs et des industriels. En ce qui concerne les méthodes multicritères MCIC, un grand nombre de méthodes ont été développées dans la littérature, appartenant à trois approches principales, à savoir: (1) l'approche à base de Machine Learning (ML), (2) programmation mathématique (MP), et (3) multicritères d’aide à la décision (MCDM). Dans ML, de nombreuses méthodes de type ML supervisé ont été proposées ainsi qu'un certain nombre de méthodes hybrides. Cependant, à notre connaissance, très peu d'études de recherche ont envisagé le type ML non supervisé. Concernant les approches de type MP, un certain nombre de méthodes ont été développées en utilisant la programmation linéaire et non linéaire, telles que les méthodes Ng et ZF. Cependant, la plupart de ces méthodes doivent encore être améliorées pour en limiter les inconvénients. Sur MCDM, plusieurs méthodes ont été proposées pour fournir des classifications ABC, y compris la méthode TOPSIS (technique for order preference by similarity to ideal solution), qui est bien connue pour son attractivité et son utilisation, ainsi que certaines méthodes hybrides combinées avec TOPSIS. Il convient de noter que la plupart des études publiées se sont uniquement concentrées sur la proposition de méthodes de classification pour classer les SKUs dans un système de gestion de stock avec un intérêt limité par rapport à l'objectif initial et le plus important de notre travail, qui est la performance en termes de coûts et de niveau de service de la méthode proposée. De plus, la plupart des études existantes n'ont pas considéré des systèmes de gestion de stock avec un grand nombre de données réelles (un grand nombre de références) pour évaluer empiriquement leurs performances et recommander l'utilisation d’une méthode particulière pour des mises en pratique réelles. Ainsi, cette thèse propose d'abord d'évaluer la performance (coût et service) des méthodes MCIC existantes et de proposer diverses méthodes de classification alternatives qui réduisent les coûts et conduisent à des niveaux de service plus élevés. Plus précisément, trois méthodes de type ML non supervisées sont proposées et analysées : Agglomerative hierarchical clustering, Gaussian mixture model et K-means. En outre, d'autres méthodes hybrides dans les approches de type MP et MCDM sont également développées. Ces méthodes proposées représentent une hybridation des méthodes TOPSIS et Ng avec la méthode Triangular distribution, la méthode Simple additive weighting (SAW) et la méthode Multi-Objective Optimization Method by Ratio Analysis (MOORA). Pour mener nos recherches, la thèse analyse empiriquement les performances des méthodes considérées au moyen de deux jeux de données. Le premier jeu de données est un jeu de données benchmark qui provient d’une unité d’hôpital, souvent utilisé dans la littérature traitant des méthodes MCIC, composé de 47 SKUs. Le deuxième jeu de données se compose de 9086 SKUs et provient d'un détaillant aux Pays-Bas qui vend des produits de bricolage. Les performances des méthodes proposées sont comparées à celles des méthodes de classification MCIC existantes dans la littérature. Les résultats empiriques révèlent que les méthodes proposées donnent des performances prometteuses en conduisant à une plus grande efficacité combinée service-coût, notamment pour le second jeu de données très significatifThis thesis deals with the issue of inventory classification within supply chains. More specifically, it aims to provide new alternative classification methods to address the multi-criteria inventory classification (MCIC) problem. It is well known that the ABC inventory classification technique is widely used to streamline inventory systems composed of thousands of stock-keeping-units (SKUs). Single-criterion inventory classification (SCIC) methods are often used in practice and recently MCIC techniques have also attracted researchers and practitioners. With regard to the MCIC techniques, large number of studies have been developed that belong to three main approaches, namely: (1) the machine learning (ML), (2) the mathematical programming (MP), and (3) the multi-criteria decision making (MCDM). On the ML approach, many research methods belonging to the supervised ML type have been proposed as well as a number of hybrid methods. However, to the best of our knowledge, very few research studies have considered the unsupervised ML type. On the MP approach, a number of methods have been developed using linear and non-linear programming, such as the Ng and the ZF methods. Yet, most of these developed methods still can be granted more attentions for more improvements and shortcomings reduction. On the MCDM approach, several methods have been proposed to provide ABC classifications, including the TOPSIS (technique for order preference by similarity to ideal solution) method, which is well known for its wide attractiveness and utilization, as well as some hybrid TOPSIS methods.It is worth noting that most of the published studies have only focused on providing classification methods to rank the SKUs in an inventory system without any interest in the original and most important goal of this exercise, which is achieving a combined service-cost inventory performance, i.e. the maximization of service levels and the minimization of inventory costs. Moreover, most of the existing studies have not considered large and real-life datasets to recommend the run of MCIC technique for real life implementations. Thus, this thesis proposes first to evaluate the inventory performance (cost and service) of existing MCIC methods and to provide various alternative classification methods that lead to higher service and cost performance. More specifically, three unsupervised machine learning methods are proposed and analyzed: the Agglomerative hierarchical clustering, the Gaussian mixture model and K-means. In addition, other hybrid methods within the MP and MCDM approaches are also developed. These proposed methods represent a hybridization of the TOPSIS and Ng methods with the triangular distribution, the Simple additive weighting (SAW) and the Multi-objective optimization method by ratio analysis (MOORA).To conduct our research, the thesis empirically analyzes the performance of the proposed methods by means of two datasets containing more than nine thousand SKUs. The first dataset is a benchmark dataset originating from a Hospital Respiratory Theory Unit, often used in the literature dealing with the MCIC methods, composed of 47 SKUs. The second dataset consists of 9,086 SKUs and coming from a retailer in the Netherlands. The performances of the proposed methods are compared to that of existing MCIC classification methods in the literature. The empirical results reveal that the proposed methods can carry promising performances by leading to a higher combined service-cost efficiency
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Al-Qatawneh, Lina Khalil. "A study of inventory classification in healthcare logistics using system dynamics modelling." Thesis, Sheffield Hallam University, 2006. http://shura.shu.ac.uk/19256/.
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One of the key challenges for a modern day health care provider is to dispense high quality of medical care while limiting or even reducing the health care expenditures. This research work endeavours to meet this challenge through effective management of hospitals logistics systems. The aim of this research work is to provide a structured mechanism for modelling and analysing health care logistics to be able to understand its dynamic behaviour and effectively manage its logistical activities on the basis of the model. In order to achieve the research objectives, this research uses system dynamics as the main medium of analysis, and in particular, employs an integrated system dynamics framework which has been used previously for manufacturing industry supply chain designs and tests the feasibility of the framework for analysing and modelling health care logistics. This is ascertained by developing and incorporating a decision making metrics in the system dynamics model based on item criticality, usage, and value to optimise overall logistics costs. System Dynamics methodology is employed at first to develop a model for existing inventory control decisions, and subsequently to produce two alternative approaches based on traditional (R, s, S) inventory control approach and Continuous Replenishment Inventory and Order Based Production Control CR(IOBPCS) approach. These approaches are tested for two case hospitals, namely: Children's National Medical Center (CNMC) USA, and Derbyshire Royal Infirmary (DRI) UK. The dynamic analysis for each case revealed problems in terms of multistage inventories and order batching, which could lead to demand amplification causing a detrimental effect on the inventory management throughout the supply chain. Accordingly, the simulations results produced for the two cases are benchmarked using alternative strategies in terms of lower inventory cost, and robustness to meet the unpredictable demand arising from a large number of items. Overall, this research work has enhanced the understanding of hospitals logistics systems by building qualitative and quantitative models. More specifically, this research work has illustrated the applicability of the integrated system dynamics framework in analysing and modelling hospitals logistics systems and inventory control decisions. One particular contribution of this study is introducing inventory classification based on the criticality of items for patient needs which is more suited for health care situations rather purely cost based policies prevalent in other manufacturing and service chains. Therefore, this work has rigorously tested a multi-criteria based inventory classification method that takes into account the criticality of use, cost, and usage value of items for optimising overall inventory cost while maintaining the required patient care/service level. Future studies may be conducted to further evaluate the trade-offs in between different logistics decision making (such as, inventory control, service level, purchasing, transportation and warehousing) in order to design a set of "best practice" simulation models to optimise the overall dynamic behaviour for health care supply chains.
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Maudie, Alan John. "Forest inventory classification using aerial image texture in the New Brunswick Acadian forest region." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0017/MQ48024.pdf.
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Sandy, Alexis Emily. "Environmental and Digital Data Analysis of the National Wetlands Inventory (NWI) Landscape Position Classification System." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33572.
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The National Wetlands Inventory (NWI) is the definitive source for wetland resources in the United States. The NWI production unit in Hadley, MA has begun to upgrade their digital map database, integrating descriptors for assessment of wetland functions. Updating is conducted manually and some automation is needed to increase production and efficiency. This study assigned landscape position descriptor codes to NWI wetland polygons and correlated polygon environmental properties with public domain terrain, soils, hydrology, and vegetation data within the Coastal Plain of Virginia. Environmental properties were applied to a non-metric multidimensional scaling technique to identify similarities within individual landscape positions based on wetland plant indicators, primary and secondary hydrology indicators, and field indicators of hydric soils. Individual NWI landscape position classes were linked to field-validated environmental properties. Measures provided by this analysis indicated that wetland plant occurrence and wetland plant status obtained a stress value of 0.136 (Kruskalâ s stress measure = poor), which is a poor indicator when determining correlation among wetland environmental properties. This is due principally to the highly-variable plant distribution and wetland plant status found among the field-validated sites. Primary and secondary hydrology indicators obtained a stress rating of 0.097 (Kruskalâ s stress measure = good) for correlation. The hydrology indicators measured in this analysis had a high level of correlation with all NWI landscape position classes due the common occurrence of at least one primary hydrology indicator in all field validated wetlands. The secondary indicators had an increased accuracy in landscape position discrimination over the primary indicators because they were less ubiquitous. Hydric soil characteristics listed in the 1987 Manual and NTCHS field indicators of hydric soils proved to be a relatively poor indicator, based on Kruskalâ s stress measure of 0.117, for contrasting landscape position classes because the same values occurred across all classes.
The six NWI fieldâ validated landscape position classes used in this study were then further applied in a public domain digital data analysis. Mean pixel attribute values extracted from the 180 field-validated wetlands were analyzed using cluster analysis. The percent hydric soil component displayed the greatest variance when compared to elevation and slope curvature, streamflow and waterbody, Cowardin classification, and wetland vegetation type. Limitations of the soil survey data included: variable date of acquisition, small scale compared to wetland size, and variable quality. Flow had limitations related to its linear attributes, therefore is often found insignificant when evaluating pixel values that are mean of selected pixels across of wetland landscape position polygons. NLCD data limitations included poor quality resolution (large pixel size) and variable classification of cover types. The three sources of information that would improve wetland mapping and modeling the subtle changes in elevation and slope curvature that characterize wetland landscapes are: recent high resolution leaf-off aerial photography, high-quality soil survey data, and high-resolution elevation data.
Due to the data limitations and the choice of variables used in this study, development of models and rules that clearly separate the six different landscape positions was not possible, and thus automation of coding could not be attempted.Master of Science
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Isiaka, Adeiza Lasisi. "Ebira English in Nigerian Supersystems: Inventory and Variation." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-225496.
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Die vorliegende Arbeit mit dem Titel „Ebíra English in Nigerian Supersystems: Inventory and Variation“ befasst sich mit einer kleinen Varietät des Nigerianischen Englisch, die für eine Untersuchung aus zwei Gründen besonders geeignet erscheint: Einerseits bin ich selbst Mitglied dieser Volksgruppe, was mir einen besonderen Zugang zu guten, aktuellen und vor allem natürlichen Sprachdaten ermöglicht. Diese sind für eine soziophonetische Untersuchung mit den Konzepten und modernen Methoden der Variationslinguistik von besonderer Bedeutung. Andererseits ist die vorliegende Arbeit keine weitere Studie über die großen Systeme des nigerianischen Englisch oder über die beiden größten und bereits relativ gut untersuchten Systeme des Yoruba-Englisch im Südwesten des Landes oder des Hausa-Englisch im Norden, sondern über eine relative kleine Gruppe dazwischen, die historisch zunächst von den Yoruba und später immer mehr von den Hausa-Sprechern beeinflusst wurde und nach wie vor beeinflusst ist. Diese empirische soziophonetische Studie stellt zwei Forschungsfragen:
FF1) Welches Vokalinventar besitzt Ebíra Englisch? Diese Frage ergibt sich aus den widersprüchlichen Ergebnissen vorheriger Untersuchungen (zu Nigerianischen, Yoruba- bzw. Hausa-Englisch) und soll hier erstmals in einer Analyse von digitalen Aufnahmen von 28 jüngeren und älteren Männern und Frauen (16 bzw. 12) aus den Jahren 2014-2016 untersucht werden. Diese Aufnahmen wurden im Rahmen von soziolinguistischen Interviews gemacht, die die bekannten Sprachstile (nach Labov) umfassen: Wortliste, Lesepassage (die bewährte Kurzgeschichte The Boy who Cried Wolf mit jeweils 90 vorkommenden englischen Vokalen) und Konversation. Diese Frage ist auch vor dem Hintergrund des Einflusses der beiden nahen Hauptvarietäten Yoruba- und Hausa-Englisch interessant (FF1b). Auf der Grundlage von fast 15.000 extrahierten Vokalen erfolgte jeweils nach der sorgfältigen Aussortierung unbrauchbarer oder unvollständiger Daten eine quantitative Untersuchung mit Hilfe des Analyseinstruments PRAAT, mit dem sich die Vokalqualität in Form von Formanten messen und darstellen lässt. Die Untersuchung umfasste die bekannten Monophthongkontraste (nach Wells` lexical sets) FLEECE & KIT, FOOT & GOOSE (+ USE ), LOT & THOUGHT & STRUT , TRAP & BATH & lettER , sowie NURSE , und die relativen Diphthonge FACE , GOAT und CURE.
FF2) Welche sprachlichen und sozialen Variablen können die Variation dieses Ebíra Englisch Vokalsystems erklären? Neben den bekannten sozialen Variablen Alter (bzw. Altersgruppe), Geschlecht, Mehrsprachigkeit und Bildung wurden v.a. die sprachlichen Variablen Vokaldauer, phonetische Umgebung der Vokale und Sprachstil untersucht. Interessanterweise war für eine so detaillierte Analyse der Variation die zunächst recht groß wirkende Anzahl der extrahierten Vokale nicht in jedem Fall groß genug oder nicht gut genug verteilt.
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Castro, Villagón Lizza, and Caleb Rangel. "Determining Supply Chain Inventory Locations Through Product Classification : A Case Study of a Sealing Material Company." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Centre of Logistics and Supply Chain Management, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-18426.
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Nowadays firms must develop inventory policies that enable them to cope with the changing marketplace. Determining proper inventory locations can help decrease costs related to inventory holding and transportation. Moreover, this allows firms to respond in a timely manner to customers’ requirements. As a result profit margins can be enhanced as well as the competitiveness of a firm. However, the decision of where to locate inventory in a supply chain is difficult since many companies are managed independently. The present research is developed as a case study where product classification, customer and supplier segmentation schemes are reviewed in order to determine appropriate inventory locations along the supply chain. The thesis is written upon literature and empirical research, where most of the data was collected through personal interviews and observations at the supply chain management offices of a distributor for sealing material parts in Europe. Our conclusion shows that product classification has an important impact on inventory location decisions. Also, we conclude that products should be classified based on both physical characteristics and demand factors, as well as according to customers’ requirements. Another factor to be considered when deciding on inventory location is supply risks, due to issues related to raw material availability and capacity. Nonetheless, the selection of classification variables is challenging as it is hard to determine which factors are more relevant than others as this varies depending on each firms’ needs. In addition, we find that supply chain strategies are not realistic due to the constant changes in the business environment and the inability of a firm to manage whole supply chains. Furthermore, a high level of communication among supply chain partners is fundamental, especially when a centralized inventory policy and a postponement strategy are in place.
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Book, Oscar, Isac Falkenberg, and Oscar Gunnarsson. "Orsaker till saldodifferenser inom fordonsindustrin." Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-24023.
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Den här uppsatsens syfte var att analysera saldodifferenser på Haldex. För att besvara detta syfte genomfördes en kvalitativ metod i form av intervjuer, observationer samt en enkät. Detta empiriska material analyserades sedan med hjälp av relevanta teorier som berörde inventory management, RFID teknik och anställdas beteende. Det vi kom fram till var att saldodifferenserna på Haldex beror på både mänskliga och teknologiska fel. De mänskliga felen beror på en bristande utbildning i det nya affärssystemet som implementerades för drygt ett år sedan. De teknologiska felen beror på svaga kriterier vid klassificering av sitt lager. Idag använder sig Haldex av ett det vanligaste kriteriet vid en ABC klassificering, nämligen värdet på produkten. Vi föreslår att det bör kompletteras med ledtiden och betydelsen av produkten för att ge ett mer rättvisande klassificering på lagret. För att minska felen som uppstår i lagret föreslår vi att Haldex bör implementera RFID teknologin på sina A produkter.The purpose of this study was to analyze inventory inaccuracy at Haldex. In order to answer the purpose a qualitative method in the form of interviews, a survey and observations were conducted. The empirical material was then later analyzed with relevant theories regarding inventory inaccuracy. This study found that the inventory inaccuracy at Haldex mainly was a result of human errors combined with technological errors. The human errors came from a lack of knowledge in the company's ERP system AX12. The interviews found that the system had been implemented too fast and without relevant training, which later resulted in employees not knowing how to properly use it. The technological errors came from the company's weak criteria’s when it came to classify the inventory. Today Haldex uses an ABC-classification that is based on the products value, this essay suggests that lead time and importance of the product should be added. In order to minimize inventory errors this essay suggest that RFID technology needs to be added to the company's A-products.
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Kučerová, Kamila. "Návrh na zlepšení řízení zásob." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-234863.
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The thesis is focused on the study and optimize inventory management at Kordárna Plus, a. s. The theoretical part describes the characteristics of the basic concepts related to inventory management, classification, costs associated there with and methods of inventory control. The practical part is focused on the analysis of stocks on the process of procuring, warehousing and inventory control. This analysis uncovered deficiencies for which they proposed solutions. Proposals should lead to improved inventory management in the company.
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Jensen, Jana D. "STUDENTS’ UNDERSTANDINGS OF ACID-BASE REACTIONS INVESTIGATED THROUGH THEIR CLASSIFICATION SCHEMES AND THE ACID-BASE REACTIONS CONCEPT INVENTORY." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1365611297.
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Seretny, Michael Lee. "Field trial with the Ball State diagnostic inventory based on the Feighner criteria." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/560297.
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This study examined the Ball State Diagnostic Inventory. First, the construct validity of the measure and the 14 corresponding psychiatric diagnoses was considered. Secondarily, the investigation considered the psychiatric epidemiology of a college-age population.A review of the literature was presented with an emphasis on psychiatric syndromes, the Neo-Kraepelinian tradition, and the development of empirically based diagnostic criteria. The construction of the Ball State Diagnostic Inventory was placed in the historical context of the assessment of empirically based descriptive diagnostic criteria.One thousand and twenty-two undergraduate and graduate students from four U.S. universities volunteered to complete the Ball State Diagnostic Inventory. Participants were screened for prior psychiatric treatment or a course of psychotrophic medication. The mean chronological age of the subjects was 20.6 years (SD = 1.25) with a range of 18 to 28. The Ball State Diagnostic Inventory is a 218-item measure of adult psychopathology as reflected in the diagnostic criteria of the Diagnostic Inventory Schedule.The results showed the epidemiological point prevalence rates for this college age sample to correspond to other estimates. The 14-factor solution provided evidence of grouping of symptoms into traditionally defined diagnostic categories. Moreover, derived factors were similar to previous factor analytical studies with major psychiatric syndromes.The results were discussed in terms of their support for the utility of empirically based diagnostic criteria. Further investigations with the Ball State diagnostic Inventory were explored.Department of Educational Psychology
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Hamberg, Sven, and Christine Zetterberg. "Den stora parameterjakten : Riktlinjer för skapande av en artikelklassificering ur ett logistiskt perspektiv." Thesis, Uppsala University, Department of Business Studies, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-112984.
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Effektiv logistik är ofta nyckeln bakom framgångsrika företag. Då logistik är ett väldigt komplext problemområde har det blivit nödvändigt att utveckla intelligenta system som hjälpmedel vid beslutsfattande. Klassificeringssystem av artiklar är ett sådant system, vilket ska underlätta att flytta fokus från den enskilda artikeln till artiklar som kräver extra mycket uppmärksamhet.
En stor del forskning har utförts inom klassificeringsområdet de senaste åren. Denna har dock varit av ren matematisk karaktär där olika lösningar presenterats vilka i grund och botten behandlat skapande av en artikelrangordning utifrån en samling parametrar. Hur parametrarna väljs och vilka implikationer valet av matematisk modell får är ännu obehandlat ur ett logistiskt perspektiv. Denna rapport syftar till att påbörja fyllandet av den lucka som återfinns inom klassificeringsområdet. Detta innebär framtagande av ett systematiskt förhållningssätt vid byggande av ett klassificeringssystem, där val av parametrar och matematisk modell utgår från företagets behov och förutsättningar.
Parametrarna att bygga klassificeringen på är systemets verkliga kärna och utgör därmed grunden för de beslut som fattas utifrån det. För att klassificeringen på ett effektivt sätt ska kunna ligga till grund för beslutsfattande inom ramen för logistik krävs att hänsyn tas till företagets hela logistiska verksamhet. Parametrarna identifieras därför genom att analysera en artikels huvudsakliga kontaktytor med en organisation, där rapporten avgränsas till inköp, lager och kund. Vid de tre stegen identifieras parametrar vilka är mått på de direkta såväl som indirekta kostnader förknippade med de olika artiklarna, samt hur stort värde de tillför organisationen i stort. Valet av matematisk modell får implikationer både för det slutgiltiga klassificeringssystemets precision såväl som hur stor kostnad skapandet utgör, där mer komplexa modeller ger ett mer pålitligt klassificeringssystem samtidigt som de är mer resurskrävande att implementera.
Genom att följa rapportens riktlinjer kan ett klassificeringssystem byggas vilket möjliggör en differentierad materialhantering där operativa och strategiska beslut är väl underbyggda, och där de resurser som förbrukas i och med hanteringen av de olika artiklarna får maximal utdelning.
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Purcell, Maria. "A personality-based classification of a community sample of male adolescent sex offenders using the Millon Adolescent Clinical Inventory (MACI)." Thesis, University of Auckland, 2010. http://hdl.handle.net/2292/6538.
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A personality-based classification of an Auckland, New Zealand community-based sample of 298 male adolescent sex offenders was conducted using cluster analysis of the Personality Pattern scales of the Millon Adolescent Clinical Inventory (MACI) scores. Three personalitybased profile types were identified: a detached and socially isolated type (n=97), an antisocial, offending supportive type (n=73) and a third type with few clinically elevated personality characteristics (n=128). Further analyses resulted in significant differences among the personality-based profiles on the MACI subscales that measured response styles, adolescents��� concerns and clinical problems. Offender, offence, and victim characteristics were recorded from a retrospective file review. The results of this study provide support for high rates of previous victimisation, family dysfunction, social isolation, substance abuse, and engagement in other types of offending in male adolescent sex offenders. Furthermore, this study supports the heterogeneity of male adolescent sex offenders on personality-based and psychopathology characteristics. Although there were some emerging relationships of victim selection with the personality-based profile types, none of the analyses reached statistical significance. Furthermore, few meaningful statistically significant relationships with the profile types and offender or offence characteristics were found. This may be due to the nature of the adolescent developmental stage, whereby behaviour is fluid and persistent patterns are yet to be fully established. Alternatively, relationships of offender, offence, and victim characteristics with personality-based profiles may not exist, or are difficult to tease apart. The current research is discussed regarding personality-based interventions. The study���s strengths and limitations is also discussed.
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Råstrander, Frida, and Linnea Hejdenberg. "Lagerstyrning – Förståelse är grunden till förbättring : Utformning av en teoretisk lagerstyrningsmodell för att skapa förståelse för hur lageromsättningshastigheten kan öka samt applicering av denna på Sandviks produktionsavdelning i Svedala för att identifiera möjliga förbättringar." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53212.
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Bakgrund: För företag som håller lager är en viktig faktor för att lyckas öka effektiviteten att arbeta med lagerstyrning. Lagerstyrning handlar om planering och kontroll av lagret för att kunna serva kunderna och produktionen. Inom lagerstyrning är det viktigt att företag fattar beslut gällande vilken orderkvantitet som ska beställas samt när ordern ska läggas för att finnas tillgänglig på lagret vid rätt tidpunkt. Företag kan använda sig av säkerhetslager vid styrning av sitt lager för att försäkra sig om att de kan hantera osäkerheter i efterfrågan och produktion. Syfte: Syftet med studien är att utifrån analys av lagerstyrningsteori utforma en teoretisk lagerstyrningsmodell för att skapa förståelse för hur lageromsättningshastigheten kan öka. Vidare ska den framtagna modellen empiriskt appliceras på Sandviks produktionsavdelning i Svedalas aktuella artiklar för att identifiera möjliga förbättringar. Metod: Studien har genomförts som en fallstudie på Sandviks produktionsavdelning i Svedala baserat på en teoretisk framtagen lagerstyrningsmodell. Teoriinsamlingen till utformandet av den teoretiska lagerstyrningsmodellen har inhämtats via facklitteratur och vetenskapliga artiklar. Empiriinsamlingen har gjorts med hjälp av intervjuer och numerisk data. Både teori och empiri har sedan analyserats utifrån ett kvalitativt tillvägagångssätt. Avslutande kommentarer: Den framtagna teoretiska lagerstyrningsmodellen börjar med att presentera kriterier som påverkar lageromsättningshastigheten, sedan presenteras steg för att genomföra en ABC-klassificering och slutligen presenteras olika lagerstyrningsmetoder för att bestämma hur orderläggningen ska ske samt hur stortivsäkerhetslagret ska vara. Den teoretiska lagerstyrningsmodellen är pedagogisk och tydlig för att skapa förståelse hos företag om hur de kan öka sin lageromsättningshastighet. Lagerstyrningen som formades utifrån den teoretiska lagerstyrningsmodellen för Sandviks produktionsavdelning i Svedala bestod av orderläggningsmetoderna lot-for-lot, uppskattad orderkvantitet och täcktidplanering samt säkerhetslager baserat på manuella bedömningar och baserat på ledtidsförbrukningen. Med hjälp av denna lagerstyrning ska de proaktivt undvika föråldrat och långsamtgående lager i framtiden.Background: In order to increase the efficiency for companies that keep inventory, they need to work with inventory control. Inventory control regards planning and control of the inventory to increase customer and production service. Within inventory control, it is important that companies make decisions regarding the quantity to be ordered and when the order will be added to be available in the warehouse at the right time. Companies can use safety stock to ensure that they can deal with uncertainties in demand and production. Purpose: The purpose of this study is, based on analysis of inventory control theory, to design a theoretical model of inventory control to create an understanding for how the inventory turnover may increase. Furthermore, the theoretical model will be empirically applied to Sandvik's production department of Svedala's current articles to indicate improvements. Method: The study has been made as a case study at Sandvik´s production department in Svedala, based on a developed theoretical model of inventory control. Theory collection to the design of the theoretical model of inventory control has been obtained through professional literature and scientific articles. Empirical data has been collected through interviews and numerical data. Both theory and empirical data have been analyzed from a qualitative approach. Concluding remarks: The designed theoretical model of inventory includes criteria that affect inventory turnover, the steps to implement an ABC classification and various inventory control methods to determine how the placement of orders should be implemented and the amount of safety stock that should be held. The theoretical model vi of inventory control is pedagogical and clear to create an understanding regarding how companies can increase their inventory turnover. The inventory control that was formed for Sandvik´s production department in Svedala, on the basis of the theoretical model of inventory control, consisted of the ordering methods, lot-for-lot, estimated order quantity and cover-time planning. The methods for safety stock were safety stock based on manual assessments and on lead time consumptions. With this control Sandvik´s production department in Svedala, proactively can avoid obsolete and slow moving inventory in the future
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Klimek, Bettina, Natanael Arndt, Sebastian Krause, and Timotheus Arndt. "Creating Linked Data morphological language resources with MMoOn: the Hebrew Morpheme Inventory." Universität Leipzig, 2016. https://ul.qucosa.de/id/qucosa%3A15774.
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The development of standard models for describing general lexical resources has led to the emergence of numerous lexical datasets of various languages in the Semantic Web. However, there are no models that describe the domain of Morphology in a similar manner.
As a result, there are hardly any language resources of morphemic data available in RDF to date. This paper presents the creation of the Hebrew Morpheme Inventory from a manually compiled tabular dataset comprising around 52.000 entries. It is an ongoing effort of representing the lexemes, word-forms and morphologigal patterns together with their underlying relations based on the newly created Multilingual
Morpheme Ontology (MMoOn). It will be shown how segmented Hebrew language data can be granularly described in a Linked Data format, thus, serving as an exemplary case for creating morpheme inventories of any inflectional language with MMoOn. The resulting dataset is described a) according to the structure of the underlying data format, b) with respect to the Hebrew language characteristic of building word-forms directly from roots, c) by exemplifying how inflectional information is realized and d) with regard to its enrichment with external links to sense resources.
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Muthukumar, Subrahmanyam. "The application of advanced inventory techniques in urban inventory data development to earthquake risk modeling and mitigation in mid-America." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26662.
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Thesis (Ph.D)--City Planning, Georgia Institute of Technology, 2009.Committee Chair: French, Steven P.; Committee Member: Drummond, William; Committee Member: Goodno, Barry; Committee Member: McCarthy, Patrick; Committee Member: Yang, Jiawen. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Doehring, Claudius. "Die Prüfung der Test-Retest-Reliabilität des Onset of Depression Inventory." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-215653.
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Eine depressive Erkrankung kann sich mit unterschiedlicher Geschwindigkeit innerhalb weniger Stunden oder über Monate hinweg ausbilden. Zur Erfassung dieses bisher wenig untersuchten klinischen Merkmals wurde das Onset of Depression Inventory (ODI), ein standardisiertes klinisches Interview, entwickelt. Die vorliegende Studie prüfte die Test-Retest-Reliabilität des Onset of Depression Inventory und betrachtete die Frage nach dem optimalen Zeitpunkt der Durchführung des Interviews im Krankheitsverlauf. Es konnte gezeigt werden, dass die Patientenangaben zur Geschwindigkeit des Depressionsbeginns über den Beobachtungszeitraum zwischen zwei Untersuchungszeitpunkten stabil sind und auf hohem Niveau signifikant korrelieren. Im Weiteren zeigte sich keine Beeinflussung der Angaben zur Geschwindigkeit des Depressionsbeginns durch die Schwere der depressiven Symptomatik. Die hohe Übereinstimmung der Patientenangaben resultiert in einer hohen Test-Retest-Reliabilität und spricht für die Verlässlichkeit der mit dem ODI erhobenen Daten. Damit ist mit dem ODI ein geeignetes Instrument für die reliable Erfassung der Geschwindigkeit des Depressionsbeginns gegeben, was gleichermaßen für die klinische Arbeit als auch für wissenschaftliche Zwecke anwendbar ist und vor allem im klinischen Kontext eine frühe Differenzierung zwischen Unipolarer Depression und Bipolarer Affektiver Störung ermöglicht.
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Galvez-Torres, Erika, Milagros Cruz-Alfaro, Carlos Cespedes-Blanco, Carlos Raymundo, Nestor Mamani-Macedo, and Francisco Dominguez. "B2B Marketing Method Adapted to Sales Improvement Through the Implementation of ABC Classification Tool and Inbound Marketing in SMEs." Springer, 2020. http://hdl.handle.net/10757/656372.
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.It has been found that the main causes of insufficient sales of different small and medium-sized enterprises (SMEs) is the low conversion rate of quotes into sales, which entails poor business performance and low economic impact. Therefore, a marketing methodology called inbound marketing is planned, which is modified and adapted to the case study. In contrast, tools such as ABC classification, workflow, and inbound marketing have been used as a structure of the proposed methodology to solve the problem. The implementation of this methodology resulted in an increased efficiency of quote development and an enhanced performance ratio thereof. In conclusion, it is possible to measure the financial impact of the methodology implementation which has been beneficial for the company under study. Business performance in the last month of implementation improved by 10%.
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Qu, Zhan, Horst Raff, and Nicolas Schmitt. "A Theory of Intermediation in Supply Chains Based on Inventory Control." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-212009.
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The paper shows that taking inventory control out of the hands of retailers and assigning it to an intermediary increases the value of a supply chain when demand volatility is high. This is because an intermediary can help solve two incentive problems associated with retailers\' inventory control and thereby improve the intertemporal allocation of inventory. Adding an intermediary as a new link in a supply chain is also shown to reduce total inventory, to make shipments from the manufacturer less frequent and more variable in size, as well as to reduce social welfare.
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Yesilkayali, Selin. "Integrated classification methods for spare parts : A case study on a mass production factory." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39707.
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Inventory management is a complex system which involves different stakeholders from multiple areas in a company which creates a limitation when seeking information between involved staff. Having the right procedure of tracking regular and critical spare parts will give a better control and efficiency in the production process. It is important to have the right classification method to facilitate critical spare parts. The incorrect criteria classification can be achieved in case inventory management have the wrong systematic procedure. Classification methods have different purposes and achieve the highest utilization by combining a variety of methods. By integrating classification methods, set limits and combination of multiple criteria decision analysis can be performed. The study has conducted a case study to compare and evaluate the performance of inventory management in a trustworthy and efficient way. A theoretical framework is constructed with the intention on identify which classification methods can be combined and applied to a production factors criterion. Based on interviews with stakeholders from maintenance, warehouse, and production area related to spare parts and the company’s software system. Two perspectives were used to map the qualitative and quantitative measures. The results show 14 criteria were defined as parameters that measure the performance of criticality in spare parts. The conclusion of both perspectives suggests combining and implement an integration of AHP and ABC classification methods. A proof of concept is demonstrated on AHP analysis and ABC analysis to identify the critical spare parts and the criteria.
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Qu, Zhan, and Horst Raff. "Centralized versus Decentralized Inventory Control in Supply Chains and the Bullwhip Effect." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229867.
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This paper constructs a model of a supply chain to examine how demand volatility is passed upstream through the chain. In particular, we seek to determine how likely it is that the chain experiences a bullwhip effect, where the variance of the upstream firm’s production exceeds the variance of the downstream firm’s sales. We show that the bullwhip effect is more likely to occur and is greater in size in supply chains in which inventory control is centralized rather than decentralized, that is, exercised by the downstream firm.
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Brunkau, Moritz, Roberto Cruz-García, Denie Gerold, Johannes Kalbe, Tobias Scharnweber, and Jan Wilkens. "Waldinventur und Klimawandel." Deutscher Landwirtschaftsverlag, 2019. https://tud.qucosa.de/id/qucosa%3A36517.
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Experten dreier deutscher Hochschulen entwickelten gemeinsam mit der Ostdeutschen Gesellschaft für Forstplanung mbH ein neues, forstliches Monitoringsystem. Das Verbundprojekt „Entwicklung eines forstlichen Monitoringsystems unter Berücksichtigung von Kohlenstoffspeicherung und Klimaanpassung“ (FOMOSY-KK) wird vorgestellt.
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Fischer, Sophia, Katja Soyez, and Sebastian Gurtner. "Adapting Scott and Bruce’s General Decision-Making Style Inventory to Patient Decision Making in Provider Choice." Sage, 2015. https://tud.qucosa.de/id/qucosa%3A35524.
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Objective. Research testing the concept of decision-making styles in specific contexts such as health care–related choices is missing. Therefore, we examine the contextuality of Scott and Bruce’s (1995) General Decision-Making Style Inventory with respect to patient choice situations.
Methods. Scott and Bruce’s scale was adapted for use as a patient decision-making style inventory. In total, 388 German patients who underwent elective joint surgery responded to a questionnaire about their provider choice. Confirmatory factor analyses within 2 independent samples assessed factorial structure, reliability, and validity of the scale.
Results. The final 4-dimensional, 13-item patient decision-making style inventory showed satisfactory psychometric properties. Data analyses supported reliability and construct validity. Besides the intuitive, dependent, and avoidant style, a new subdimension, called ‘‘comparative’’ decision-making style, emerged that originated from the rational dimension of the general model.
Conclusions. This research provides evidence for the contextuality of decision-making style to specific choice situations. Using a limited set of indicators, this report proposes the patient decision-making style inventory as valid and feasible tool to assess patients’ decision propensities.
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Duarte, Mauro André Dias. "Gestão e planeamento de stocks numa empresa de distribuição de suplementos alimentares." Master's thesis, Instituto Superior de Economia e Gestão, 2014. http://hdl.handle.net/10400.5/7696.
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Mestrado em Gestão e Estratégia IndustrialA gestão de stocks tem sido um problema recorrente em várias organizações ao longo dos anos. Apesar de ser um problema conhecido continua a ser alvo de estudos e aperfeiçoamentos com vista a um melhoramento dos resultados operacionais das organizações. Este é um projecto de melhoria, será efectuado um estudo entre classificações e modelos de gestão de stocks, o que permitirá se aplicado optimizar a gestão e funcionamento de uma empresa importadora de suplementos alimentares. Neste estudo optou-se por uma classificação de stocks dos produtos de acordo com a classificação ABC, a experiência do gestor da empresa foi também extremamente útil para que no final do estudo se obtenha uma optimização do funcionamento da empresa. A orgânica desta empresa assenta na compra e venda de produtos, logo a gestão correta do stock é o ponto fulcral de toda a dinâmica de funcionamento. Com este estudo vamos fornecer uma ferramenta útil a um melhor desempenho tanto a nível financeiro como uma melhoria no fornecimento aos clientes. No final deste estudo vamos ter uma proposta concreta para um melhoramento eficaz que irá permitir aliviar esta empresa de investimentos desnecessários na gestão de stocks, libertando recursos para outras áreas como por exemplo o marketing.
The stock management has been a recurring problem in many organizations over the years. Despite being a known problem continues to be the subject of studies and improvements with a view to improving the operating results of organizations. This is an improvement project, a study of ratings and inventory management models will be made, which will be applied to optimize the management and operation of an importer of food supplements. In this study we chose a rating of stocks of products according to the ABC classification, the experience of the manager of the company was also extremely helpful for the end of the study to obtain a better functioning of the company. The organic of this company is based on buying and selling products, so the correct stock management has to be the focus of all dynamic operation. With this study, it will be provided a useful tool to perform better financially and also providing improved customer supply service. At the end of this study we have a concrete proposal for an effective improvement that will enable this company to alleviate unnecessary investments in stock management, freeing up resources for other areas such as marketing.
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Yoon, Seungju. "A new heavy-duty vehicle visual classification and activity estimation method for regional mobile source emissions modeling." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07122005-204032/.
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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.Michael O. Rodgers, Committee Chair ; Randall L. Guensler, Committee Member ; Michael D. Meyer, Committee Member ; Michael P. Hunter, Committee Member ; Jennifer H. Ogle, Committee Member.
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Ullrich, Daniel, Sarah Diefenbach, and Lara Christoforakos. "Das Robot Impression Inventory: Ein modulares Instrument zur Erfassung des subjektiven Eindrucks von Robotern." TUDpress, 2020. https://tud.qucosa.de/id/qucosa%3A73894.
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Roboter treten heute in vielfältigen Ausgestaltungen und Anwendungsgebieten auf − sie begegnen uns beispielsweise als Industrieroboter in der Fertigung, als Staubsaugerroboter im heimischen Wohnzimmer oder als Assistenzroboter im Krankenhaus und Pflegeheim. Gerade im Bereich sozialer Roboter, die in direkten Kontakt mit Menschen treten und hierbei oft menschenähnliche Dialoge und Interaktionsformen imitieren, spielt der subjektive Eindruck des Roboters auf den Menschen (z. B. vertrauenswürdig, kompetent, unterhaltsam) eine große Rolle für dessen Akzeptanz und Erfolg. Somit treten für Forscher und Praktiker im Feld Mensch-Roboter-Interaktion (MRI) zunehmend spezifische Fragestellungen in den Vordergrund, wie etwa die Erforschung des Zusammenhangs der Roboterpersönlichkeit und verschiedenen Komponenten des Nutzererlebens (engl. User Experience, UX).
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Nilsson, Andreas, and Pierre Olsson. "Lagra produktionskapacitet i rätt produkter : Simulering av lageruppbyggnad där produkter väljs utifrån en ny klassificeringsmodell med multipla kriterier." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211440.
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En metod som används för lagerstyrning, och som fått ökat intresse inom forskningen de senaste åren, är klassificering med multipla kriterier (MCABC). Däremot har forskningen hittills tenderat att koncentrera sig på utveckling av klassificeringsmodeller snarare än på vägledning för tillämpning av modellerna. Studien påvisade med en litteraturstudie att forskningsområdet klassificering med multipla kriterier hade en begränsad mängd vägledning för tillämpning relativt mängden klassificeringsmodeller som utformats. Därför undersökte studien en modifierad lagerstyrningsstrategi. Syftet med studien var att finna produkter som lämpar sig för lagring av produktionskapacitet och att undersöka effekterna på färdigvarulagret om dessa produkter används för lageruppbyggnad inför säsongen. För att finna sådana produkter utformades en klassificeringsmodell med multipla kriterier, GTS-modellen (Good to Store). Modellen testades genom att ett antal scenarier simulerades på ett urval av produkter av det egentillverkade sortimentet i en fabrik. Detta gjordes i en fallstudie av ett företag inom processindustrin vars sortiment har säsongsvariationer. Resultatet av simuleringarna visade att lageruppbyggnad med GTS-modellen inför säsongen innebar att det genomsnittliga lagervärdet och antalet omställningar för det egentillverkade sortimentet minskade med ungefär 14 % vardera, jämfört med nuläget. Samtidigt kunde servicenivån bibehållas på i princip identisk nivå. Görs motsvarande jämförelse enbart på den simulerade delen av sortimentet blir minskningarna ungefär 35 % vardera.Multi criteria classification (MCABC) is a method used for inventory management which has gained interest in research in recent years. However, research has tended to focus on the development of classification models rather than guidance on the application of the models. This study demonstrated, using a literature review, that the multi criteria classification field had a limited amount of guidance for application compared to the amount of classification models that were developed. Therefore, this study examined a modified inventory management strategy. The purpose of the study was to find products suitable for storing production capacity and to examine the effects on the finished goods inventory if these products are used for stock build-up prior to the season. A multi criteria classification model, the GTS (Good to Store) model, was developed to find such products. The model was tested by simulating several scenarios on a selection of products from the factory-made range. This was conducted in a case study regarding a company in the process industry whose range has seasonal variations. The simulations showed that stock build-up with the GTS model prior to the season resulted in an approximately 14 % decrease in average inventory value and number of setups for the factory-made range, compared to the current situation. At the same time, the service level was almost completely maintained. If the comparison is made exclusively on the simulated part of the assortment, the decrease will be approximately 35 %.
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Torbick, Nathan M. "The Utilization of Remote Sensing and Geographic Information System (GIS) for the Development of a Wetlands Classification and Inventory for the Lower Maumee River Watershed, Lucas County, Ohio." Connect to Online Resource-OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1083862253.
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Thesis (M.A.)--University of Toledo, 2004.Typescript. "Submitted as partial fulfillments of the requirements for the Master of Arts degree [in Geography]." Includes bibliographical references (leaves 80-90).
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Pantenburg, Birte, Melanie Luppa, Hans-Helmut König, and Steffi G. Riedel-Heller. "Burnout among young physicians and its association with physicians’ wishes to leave." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-205160.
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Background: Concerns about burnout, and its consequences, among German physicians are rising. However, data on burnout among German physicians are scarce. Also, a suspected association between burnout and German physicians’ wishes to leave remains to be studied. Therefore, the extent of burnout, and the association between burnout and wishes to leave clinical practice or to go abroad for clinical work was studied in a sample of young physicians in Saxony. Methods: In a cross-sectional survey, all physicians ≤40 years and registered with the State Chamber of Physicians of Saxony, Germany (n = 5956) received a paper-pencil questionnaire inquiring about socio-demographics, job
satisfaction, and wishes to leave clinical practice or to go abroad for clinical work. Response rate was 40 % (n = 2357). Burnout was measured with the German version of the Maslach Burnout Inventory - Human Services Survey (MBI) consisting of the subscales emotional exhaustion (feeling emotionally drained), depersonalization (feelings of cynicsm) and personal accomplishment (feelings of personal achievement in job). Variables associated with burnout, and the
association between burnout and wishes to leave were assessed in multivariate logistic regression analyses. Results: For emotional exhaustion participants reached a mean of 21.3 [standard deviation = 9.74], for depersonalization a mean of 9.9 [5.92], and for personal accomplishment a mean of 36.3 [6.77]. Men exhibited significantly higher
depersonalization than women (11.3 [6.11] versus 9 [5.62], p < 0.001). Eleven percent of participants showed a high degree of burnout on all subscales, while 35 % did not show a high degree of burnout on any subscale. Confirming that one would become a physician again, and higher satisfaction with the components \"work environment\" and
\"humaneness\", were associated with a lower chance for a high degree of burnout on all subscales. Higher emotional exhaustion and lower personal accomplishment were associated with an increased chance of wishing to leave clinical practice. Higher emotional exhaustion and higher depersonalization were associated with an increased chance of
wishing to go abroad for clinical work. Conclusions: Preventing physician burnout may not only benefit the affected individual. It may also benefit the health care system by potentially preventing physicians from leaving clinical practice or from going abroad for clinical work.
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Schoeman, Marelize. "A classification system and an inter-disciplinary action plan for the prevention and management of recidivism." Thesis, Pretoria : [s.n.], 2002. http://upetd.up.ac.za/thesis/available/etd-05312004-141418.
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Braff, Pamela Hope. "Not All Biomass is Created Equal: An Assessment of Social and Biophysical Factors Constraining Wood Availability in Virginia." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/63997.
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Most estimates of wood supply do not reflect the true availability of wood resources. The availability of wood resources ultimately depends on collective wood harvesting decisions across the landscape. Both social and biophysical constraints impact harvesting decisions and thus the availability of wood resources. While most constraints do not completely inhibit harvesting, they may significantly reduce the probability of harvest. Realistic assessments of woody availability and distribution are needed for effective forest management and planning. This study focuses on predicting the probability of harvest at forested FIA plot locations in Virginia. Classification and regression trees, conditional inferences trees, random forest, balanced random forest, conditional random forest, and logistic regression models were built to predict harvest as a function of social and biophysical availability constraints. All of the models were evaluated and compared to identify important variables constraining harvest, predict future harvests, and estimate the available wood supply. Variables related to population and resource quality seem to be the best predictors of future harvest. The balanced random forest and logistic regressions models are recommended for predicting future harvests. The balanced random forest model is the best predictor, while the logistic regression model can be most easily shared and replicated. Both models were applied to predict harvest at recently measured FIA plots. Based on the probability of harvest, we estimate that between 2012 and 2017, 10 – 21 percent of total wood volume on timberland will be available for harvesting.Master of Science
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Stellingwerf, Helena M., Gilbert Laporte, Frans C. A. M. Cruijssen, Argyris Kanellopoulos, and Jacqueline M. Bloemhof. "Quantifying the environmental and economic benefits of cooperation: A case study in temperature-controlled food logistics." Elsevier, 2018. https://publish.fid-move.qucosa.de/id/qucosa%3A73232.
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Inefficient road transportation causes unnecessary costs and polluting emissions. This problem is even more severe in refrigerated transportation, in which temperature control is used to guarantee the quality of the products. Organizing logistics cooperatively can help decrease both the environmental and the economic impacts. In Joint Route Planning (JRP) cooperation, suppliers and customers jointly optimize routing decisions so that cost and emissions are minimized. Vendor Managed Inventory (VMI) cooperation extends JRP cooperation by optimizing routing and inventory planning decisions simultaneously. However, in addition to their economic advantages, VMI and JRP may also yield environmental benefits. To test this assertion, we perform a case study on cooperation between a number of supermarket chains in the Netherlands. The data of this case study are analyzed to quantify both the economic and environmental benefits of implementing cooperation via JRP and VMI, using vehicle routing and an inventory routing models. We found that JRP cooperation can substantially reduce cost and emissions compared with uncooperative routing. In addition, VMI cooperation can further reduce cost and emissions, but minimizing cost and minimizing emissions no longer result in the same solution and there is a trade-off to be made.
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Andersson, Erik. "Effektiv lagerstyrning med AHP och tvådimensionell artikelklassificering : En fallstudie på Permobil AB, Timrå." Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-28007.
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Costs related to inventory are usually a significant amount of the company’s total assets. Despite this, companies in general don’t pay a lot of interest in it, even if the benefits from effective inventory are obvious when it comes to less tied up capital, increased customer satisfaction and better working environment. Permobil AB, Timrå is in an intense period when it comes to revenue and growth. The production unit is aiming for an increased output of 30 % in the next two years. To make this possible the company has to improve their way to distribute and handle material,The purpose of the study is to provide useful information and concrete proposals for action, so that the company can build a strategy for an effective and sustainable solution when it comes to inventory management. Alternative methods for making forecasts are suggested, in order to reach a more nuanced perception of different articles, and how they should be managed. Analytic Hierarchy Process (AHP) was used in order to give specially selected persons the chance to decide criteria for how the article should be valued. The criteria they agreed about were annual volume value, lead time, frequency rate and purchase price. The other method that was proposed was a two-dimensional model where annual volume value and frequency was the criteria that specified in which class an article should be placed. Both methods resulted in significant changes in comparison to the current solution. For the spare part inventory different forecast methods were tested and compared with the current solution. It turned out that the current forecast method performed worse than both moving average and exponential smoothing with trend. The small sample of ten random articles is not big enough to reject the current solution, but still the result is a reason enough, for the company to control the quality of the forecasts.Kostnader kopplade till lagerverksamheten är ofta en betydande del av företagets totala omsättning. Trots detta är generella intresset för effektiv lagerstyrning lågt, trots dokumenterade fördelar som mindre bundet kapital, ökad kundservice och bättre arbetsmiljö. Permobil AB, Timrå är inne i en tillväxtfas och siktar på att öka sin produktion med mer än 30 % inom två år. För att möjliggöra detta behöver företaget förbättra sin lagerstyrning och utveckla sitt sätt att distribuera material, dels till eftermarknad och dels till sin egen montering. Syftet med studien är att bistå företaget i dess önskan att skapa en effektivare lagerstyrning med avseende på kvalitet och kostnad. Alternativa metoder att klassificera artiklar föreslogs, för att skapa en mer nyanserad bild av en artikels karaktär och hur den ska styras. Analytic Hierarchy Process (AHP) användes för att ge utvalda nyckelpersoner en chans att bestämma kriterier för hur en artikel ska bedömas. Dessa kriterier var årligt volymvärde, ledtid, uttagsfrekvens och inköpspris. Den andra metoden som föreslogs var en tvådimensionell klassificering där årligt volymvärde och uttagsfrekvens delar in befintliga artiklar i nio klasser med olika prioritering. Båda metoder gav upphov till betydande förändringar i jämförelse med den nuvarande metoden. För reservdelslagret testades alternativa prognosmetoder, för att jämföra med den nuvarande. Det visade sig att de båda metoderna glidande medelvärde och exponentiell utjämning med trend presterade bättre än den befintliga metoden. Stickprovet på 10 slumpmässigt utvalda artiklar är för litet för att förkasta nuvarande sätt att prognosticera, men det finns skäl att upprätta rutiner för kvalitetskontroll för att säkra en hög nivå på framtida prognoser.
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Fearer, Todd Matthew. "Evaluating Population-Habitat Relationships of Forest Breeding Birds at Multiple Spatial and Temporal Scales Using Forest Inventory and Analysis Data." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/29243.
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Multiple studies have documented declines of forest breeding birds in the eastern United States, but the temporal and spatial scales of most studies limit inference regarding large scale bird-habitat trends. A potential solution to this challenge is integrating existing long-term datasets such as the U.S. Forest Service Forest Inventory and Analysis (FIA) program and U.S. Geological Survey Breeding Bird Survey (BBS) that span large geographic regions. The purposes of this study were to determine if FIA metrics can be related to BBS population indices at multiple spatial and temporal scales and to develop predictive models from these relationships that identify forest conditions favorable to forest songbirds. I accumulated annual route-level BBS data for 4 species guilds (canopy nesting, ground and shrub nesting, cavity nesting, early successional), each containing a minimum of five bird species, from 1966-2004. I developed 41 forest variables describing forest structure at the county level using FIA data from for the 2000 inventory cycle within 5 physiographic regions in 14 states (AL, GA, IL, IN, KY, MD, NC, NY, OH, PA, SC, TN, VA, and WV). I examine spatial relationships between the BBS and FIA data at 3 hierarchical scales: 1) individual BBS routes, 2) FIA units, and 3) and physiographic sections. At the BBS route scale, I buffered each BBS route with a 100m, 1km, and 10km buffer, intersected these buffers with the county boundaries, and developed a weighted average for each forest variable within each buffer, with the weight being a function of the percent of area each county had within a given buffer. I calculated 28 variables describing landscape structure from 1992 NLCD imagery using Fragstats within each buffer size. I developed predictive models relating spatial variations in bird occupancy and abundance to changes in forest and landscape structure using logistic regression and classification and regression trees (CART). Models were developed for each of the 3 buffer sizes, and I pooled the variables selected for the individual models and used them to develop multiscale models with the BBS route still serving as the sample unit. At the FIA unit and physiographic section scales I calculated average abundance/route for each bird species within each FIA unit and physiographic section and extrapolated the plot-level FIA variables to the FIA unit and physiographic section levels. Landscape variables were recalculated within each unit and section using NCLD imagery resampled to a 400 m pixel size. I used regression trees (FIA unit scale) and general linear models (GLM, physiographic section scale) to relate spatial variations in bird abundance to the forest and landscape variables. I examined temporal relationships between the BBS and FIA data between 1966 and 2000. I developed 13 forest variables from statistical summary reports for 4 FIA inventory cycles (1965, 1975, 1989, and 2000) within NY, PA, MD, and WV. I used linear interpolation to estimate annual values of each FIA variable between successive inventory cycles and GLMs to relate annual variations in bird abundance to the forest variables.
At the BBS route scale, the CART models accounted for > 50% of the variation in bird presence-absence and abundance. The logistic regression models had sensitivity and specificity rates > 0.50. By incorporating the variables selected for the models developed within each buffer (100m, 1km, and 10km) around the BBS routes into a multiscale model, I was able to further improve the performance of many of the models and gain additional insight regarding the contribution of multiscale influences on bird-habitat relationships. The majority of the best CART models tended to be the multiscale models, and many of the multiscale logistic models had greater sensitivity and specificity than their single-scale counter parts. The relatively fine resolution and extensive coverage of the BBS, FIA, and NLCD datasets coupled with the overlapping multiscale approach of these analyses allowed me to incorporate levels of variation in both habitat and bird occurrence and abundance into my models that likely represented a more comprehensive range of ecological variability in the bird-habitat relationships relative to studies conducted at smaller scales and/or using data at coarser resolutions.
At the FIA unit and physiographic section scales, the regression trees accounted for an average of 54.1% of the variability in bird abundance among FIA units, and the GLMs accounted for an average of 66.3% of the variability among physiographic sections. However, increasing the observational and analytical scale to the FIA unit and physiographic section decreased the measurement resolution of the bird abundance and landscape variables. This limits the applicability and interpretive strength of the models developed at these scales, but they may serve as indices to those habitat components exerting the greatest influences on bird abundance at these broader scales.
The GLMs relating average annual bird abundance to annual estimates of forest variables developed using statistical report data from the 1965, 1975, 1989, and 2000 FIA inventories explained an average of 62.0% of the variability in annual bird abundance estimates. However, these relationships were a function of both the general habitat characteristics and the trends in bird abundance specific to the 4-state region (MD, NY, PA, and WV) used for these analyses and may not be applicable to other states or regions. The small suite of variables available from the FIA statistical reports and multicollinearity among all forest variables further limited the applicability of these models. As with those developed at the FIA unit and physiographic sections scales, these models may serve as general indices to the habitat components exerting the greatest influences on bird abundance trends through time at regional scales.
These results demonstrate that forest variables developed from the FIA, in conjunction with landscape variables, can explain variations in occupancy and abundance estimated from BBS data for forest bird species with a variety of habitat requirements across spatial and temporal scales.Ph. D.
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Krieger, Sören, Jérémy Bellina, Olegs Bodins, and Mathilde Olivier. "Managing upstream supply chain in order to decrease inventory level : A case study on the paper merchant Papyrus Sweden." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-27636.
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Business Administration, Business Process and Supply Chain Management Degree Project (master), 15 higher education points, 4FE06E, Spring 2013 Authors: Jeremy Bellina, Olegs Bodins, Soeren Krieger and Mathilde Olivier Tutor: Roger Stokkedal Title: Managing Upstream Supply Chain in Order to Decrease Inventory Level: A Case Study on the Paper Merchant Papyrus Sweden. Background: The research is based on Papyrus Sweden, a paper merchant, which is facing a decrease in the demand of paper products. It was identified that inventory level reduction is now crucial for the company in order to stay in the market. Therefore, Papyrus Sweden is focused on inventory level and tied-up capital reduction in order to decrease costs and increase net profit. Purpose: This thesis aims to analyze the current situation in Papyrus Sweden in terms of inventory level and activities related to suppliers, and prepare recommendations which could help Papyrus Sweden to reduce its inventory level. Method: The data has been collected through interviews with managers from the supply chain department as well as through a data sample from Papyrus Sweden database given to the researchers. All data was analyzed and compared with the literature review. Data received from the database was processed and transformed in Microsoft Excel in order to make the analysis. Results: The analysis identifies issues in material planning methods, safety stock calculation, ABC-XYZ classification and forecast calculation, on which Papyrus Sweden could act in order to decrease its inventory level. Furthermore, the researchers identify two solutions Papyrus Sweden could implement with its suppliers in order to reduce inventory level which are a Service Level Agreement and a Vendor Managed Inventory system. Keywords: inventory level, material planning method, safety stock, ABC-XYZ classification, forecast calculation, replenishment lead time, supplier relationship, information sharing, Service Level Agreement (SLA), Vendor Managed Inventory (VMI) and Collaborative planning, forecast and replenishment system (CPFR).
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Berggren, Sara, and John Eriksson. "Principer för lagerstyrning hos GNT Group." Thesis, Linköping University, Department of Production Economics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2231.
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GNT Group is a Nordic/Baltic wholesaler that distributes products in the IT, entertainment and home electronics sector. GNT is facing problems with inaccurate inventory levels which can lead to unnecessarily high inventory carrying costs or lost sales. Currently the decisions about when and how many to order are made somewhat arbitrarily by the responsible personnel. Their decisions are based only on some brief sales history and on experience.
GNT wants to develop its ERP system to be able to support the purchaser in these and other related decisions. The purpose of this thesis is to give suggestions to what decisions the ERP system should support and how these decisions can be made.
The three main tasks in this thesis are to suggest how to calculate the optimal order quantity, how to calculate the optimal ordering point and how to decide whether it can be profitable to store an article in only one of GNT’s warehouses.
The suggested solution is based on a volume value/demand frequency classification which also takes an item’s life cycle characteristics into consideration. For the different classes suitable calculations and decisions are suggested concerning the three main tasks and issues related to them.
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Carlsson, Camilla, and Jonna Rommedahl. "ABC-klassificering och dess användningsområde : En fallstudie inom inköp mot lagerorder." Thesis, Jönköping University, JTH, Logistik och verksamhetsledning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54022.
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Purpose – The purpose of this study is to increase the knowledge of how the inventory can becontrolled and managed when purchasing in conjunction with an ABC-classification. To fulfilthe purpose, two research questions have been formulated: [1] How can the ABC classification be used to manage the purchasing process? [2] How can the ABC classification contribute to improved warehouse service? Method – The study was initiated with a feasibility study in order to shed light on the problemarea and its context which the study intends to investigate further. The feasibility study incombination with a literature review contributed to the formulation of the purpose and researchquestions. The study is designed in accordance with a case study with a singular analysis unit, in this case the purchasing unit in a business system. Furthermore, data collection wasgenerated via literature study, interview, and questionnaire. The interviews and thequestionnaires contributed to qualitative primary data which were intended to illustrate theusers’ knowledge and use of the studied phenomenon. Findings – It was found in the study that ABC classification is an effective method fordifferentiating purchasing and inventory management. This study demonstrates that aninterconnection of ABC classification and inventory service level is the most effective approachin order to control and minimize the occurrence of shortages, resulting in improved warehouseservice. Implications – The subject areas, which first and foremost are ABC classification andinventory management, are thoroughly researched as proven by existing literature, hencegenerating new knowledge to the fields are considered to be challenging. Despite the givencircumstances, this study adds knowledge to a certain extent, as the study presents andstrengthens existing research regarding how a combination of an ABC classification and acertain degree of service level has been shown to streamline the purchasing process andimprove the warehouse service as well as the inventory management. Limitations – This study only includes the users of the business system and the purchasingmodule provided by the case company, which can be considered to affect the generalizability ofthe study. The fact remains, however, that generalizability should also apply in other systemsin connection with purchasing, since the starting point of the theory and its area of applicationis so well known and generally accepted. Keywords – ABC analysis, ABC classification, inventory management, inventory control,safety stock, service level, warehouse service.Syfte – Syftet med studien är att öka kunskapen om hur olika artikelklassificeringar bör styrasvid inköp. För att besvara syftet har det brutits ner i två frågeställningar: [1] Hur kan ABC-klassificering användas för att styra inköp? [2] Hur kan ABC-klassificering bidra till förbättrad lagerservice? Metod – Studien initierades med en förstudie för att belysa det problemområde och desskontext, vilken studien ämnar undersöka. Förstudien i kombination med litteraturstudie bidrogtill formulering av studiens syfte och frågeställningar. Studien är av enfallsdesign med enanalysenhet, i det här fallet inköpsmodulen i ett affärssystem. Vidare genereradesdatainsamling via litteraturstudie, intervju samt enkät. I samband med intervju och enkäterhölls kvalitativa primärdata som avsåg åskådliggöra användarnas kunskap och användningav det studerade fenomenet. Resultat – ABC-klassificering visar sig vara en effektiv metod för differentiering av inköp ochlagerstyrning. Den här studien påvisar att en sammankoppling av artikelklassificering ochlagerservicenivå är det mest effektiva tillvägagångssättet i syfte att kontrollera och minimerauppkomsten av bristtillfällen som ger upphov till förbättrad lagerservice. Implikationer – Ämnesområdet kring ABC-klassificering och servicenivå är väl utforskatinom befintlig litteratur, vilket bidrar till mindre utrymme att generera ny kunskap till området.Trots given omständighet tillför studien i viss utsträckning kunskap, då genomförd studieframlägger och stärker befintlig forskning då en kombination av ABC-klassificering ochservicenivå har visat sig effektivisera inköpsarbetet. En sådan kombination visar sig i empirinha minimerat antal bristtillfällen och på så vis förbättrat lagerservicen. Begränsningar – Studien inkluderar enbart användare av inköpsmodulen som fallföretagettillhandahåller, vilket kan påverka studiens generaliserbarhet. Faktum kvarstår dock attgeneraliserbarhet även bör gälla i andra fall då inköp görs eftersom utgångspunkten för teorinoch dess användningsområde är så pass känt och allmänt godtaget. Nyckelord – ABC-analys, ABC-klassificering, lagerhantering, lagerservice, lagerstyrning,servicenivå, säkerhetslager.
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Litvin, Justin M. "Development of a Self-Report Measure of Post-Traumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD) According to the Eleventh Edition of the International Classification of Diseases (ICD-11): The Complex Trauma Inventory." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862735/.
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The work group editing trauma disorders for the upcoming edition of the International Classification of Diseases (ICD-11) made several changes. Specifically, they significantly simplified the guidelines for post-traumatic stress disorder (PTSD) and added a new trauma disorder called complex PTSD (CPTSD). The new domains for PTSD and the addition of CPTSD require new instruments to assess these novel constructs. We developed a measure of PTSD and CPTSD (Complex Trauma Inventory; CTI) according to the proposed ICD-11 domains, creating several items to assess each domain. We examined the factor structure of the CTI (using both exploratory and confirmatory factor analyses) in two separate samples of diverse college students (n1 = 501; n2 = 500), reducing the original 53 trauma items in the item pool to 21 items. Confirmatory factor analyses supported two highly-correlated second-order factors (PTSD and complex factors), with PTSD (i.e., re-experiencing, avoidance, hyper-arousal) and complex factors (i.e., affect dysregulation, alterations in self-perception and alterations in relationships with others) each loading on three of the six ICD-11-consistent first-order factors (RMSEA = .08, CFI = .92, GFI = .87, SRMR = .06). Internal consistency for PTSD (α = .92) and complex factors (α = .93) are excellent.
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Lin, Dada. "Enterprise Wikis Revealed: Die fünf Quellen der Motivation bei der Nutzung von Enterprise Wikis." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-149366.
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Enterprise Wikis haben sich zu einem wichtigen Bestandteil der Corporate Intranets entwickelt. Aufgrund ihrer Nutzungsoffenheit und hohen Flexibilität lassen sich Enterprise Wikis für vielfältigste Einsatzzwecke verwenden. Dabei ist die Nutzungsmotivation der Mitarbeiter ein kritischer Stellhebel für den Erfolg von Enterprise Wikis. In diesem Beitrag wird auf Basis des aus der Arbeitspsychologie stammenden Konzepts „motivation sources inventory“ von BARBUTO & SCHOLL eine Untersuchung mittels Online-Befragung mit 95 Teilnehmern aus 10 verschiedenen Unternehmen durchgeführt.
Hierbei wurde ersichtlich, dass Enterprise Wikis von den Befragten durchweg als wertvoll eingeschätzt werden. Weiterhin stellen die Nützlichkeit von Enterprise Wikis für die tägliche Arbeit sowie das Bestreben, Kollegen bzw. das eigene Team zu unterstützen wichtige Quellen der Motivation dar. Bezüglich der intrinsischen Prozessmotivation bei Enterprise Wikis, d.h. Spaß an der Benutzung, konnten stark divergierende Meinungen festgestellt werden. Hingegen ist Lob bzw. Reputation nur für einen kleinen Teil der Befragten motivierend, im Enterprise Wiki beizutragen.
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Kriguer, Henrique [UNESP]. "Classificação multicritério de peças de reposição." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/134253.
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O gerenciamento de estoques torna-se cada vez mais importante em função da necessidade de aperfeiçoamento da eficiência na cadeia logística, que se traduz na redução de custos e aumento do nível de serviço. A literatura sobre o gerenciamento de estoques de peças de reposição é ampla, porém é pouco abordada em relação à escolha do modelo de classificação. Neste trabalho, o método Analytic Hierarchy Process (AHP) foi aplicado em uma Empresa de bens de capital para determinar o vetor de prioridade dos critérios adotados para a classificação de peças de reposição. Apresentamos, com base no resultado deste estudo o Índice de Reposição, que foi adotado como um fator de correção nos valores de estoque segundo a classificação ABC. O objetivo foi atingido com o aperfeiçoamento do método de classificação, tornando o trabalho do planejador de estoques melhor estruturado, permitindo que possa tomar a decisão de reabastecimento de forma estruturada conforme parâmetros pré estabelecidos.
The inventory management becomes increasingly important due to the need for improved efficiency in the supply chain, which translates into cost savings and increased service level. The literature on the management of spare parts inventory is wide, but is rarely addressed in relation to the choice of classification model. In this work, the Analytic Hierarchy Process (AHP) method was applied to a Company of capital goods to determine the priority vector of the criteria adopted for the spare parts classification. Here, based on the results of this study the Replacement Index, which was adopted as a correction factor in inventory values according to the ABC classification. The goal was achieved with the improvement of classification method, making the work of the best structured inventory planner, allowing can take the form of structured replenishment decision as pre-established parameters
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Petrowski, Katja, Sören Kliem, Michael Sadler, Alicia E. Meuret, Thomas Ritz, and Elmar Brähler. "Factor structure and psychometric properties of the english version of the trier inventory for chronic stress (TICS-E)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-234462.
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Background
Demands placed on individuals in occupational and social settings, as well as imbalances in personal traits and resources, can lead to chronic stress. The Trier Inventory for Chronic Stress (TICS) measures chronic stress while incorporating domain-specific aspects, and has been found to be a highly reliable and valid research tool. The aims of the present study were to confirm the German version TICS factorial structure in an English translation of the instrument (TICS-E) and to report its psychometric properties.
Methods
A random route sample of healthy participants (N = 483) aged 18–30 years completed the TICS-E. The robust maximum likelihood estimation with a mean-adjusted chi-square test statistic was applied due to the sample’s significant deviation from the multivariate normal distribution. Goodness of fit, absolute model fit, and relative model fit were assessed by means of the root mean square error of approximation (RMSEA), the Comparative Fit Index (CFI) and the Tucker Lewis Index (TLI).
Results
Reliability estimates (Cronbach’s α and adjusted split-half reliability) ranged from .84 to .92. Item-scale correlations ranged from .50 to .85. Measures of fit showed values of .052 for RMSEA (Cl = 0.50–.054) and .067 for SRMR for absolute model fit, and values of .846 (TLI) and .855 (CFI) for relative model-fit. Factor loadings ranged from .55 to .91.
Conclusion
The psychometric properties and factor structure of the TICS-E are comparable to the German version of the TICS. The instrument therefore meets quality standards for an adequate measurement of chronic stress.
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Janssen, Larissa. "Ein Beitrag zum mehrstufigen Bestandsmanagement zwecks Reduktion von Abfällen in Lebensmittelketten." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-152286.
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Bei der Bekämpfung von Lebensmittelabfällen steht die Nachhaltigkeit an erster Stelle. Aus Nachhaltigkeitsgesichtspunkten ist eine Ressourcen- und Lebensmittelverschwendung inakzeptabel. Das Forschungsziel ist die Reduzierung von Abfällen in Lebensmittelketten unter Berücksichtigung der Gesamtkosten in den Lagerstufen. In dem Promotionsvorhaben werden stufenübergreifende Lagerhaltungsstrategien auf Abfallquoten hin untersucht. Als Forschungsmethode wird die Simulation angewendet. Es werden ausschließlich Frischwaren mit dem Haltbarkeits- und Verfallsdatum betrachtet, da diese Warengruppe den größten Anteil von Abfällen ausmacht.
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Camargo, Alexandre Pansini. "Estratificação de povoamentos de Eucalyptus spp. em classes de idade por escaneamento a laser aeroembarcado." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-05012018-182841/.
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As condições climáticas do Brasil aliadas ao desenvolvimento tecnológico favorecem a obtenção de sucessivos incrementos em produção florestal e estimulam a expansão de área cultivada com povoamentos voltados para a produção madeireira. Com o objetivo de contribuir para o processo de quantificação das florestas plantadas em uma escala regional, este estudo propõe utilizar informações combinadas de imagens de satélites e dados obtidos do LiDAR (Light Detecting and Ranging) para a construção de modelos determinísticos capazes de distinguir em duas categorias de idade agrupamentos de florestas plantadas no Vale do Paraíba, estado de São Paulo. A primeira etapa constitui utilizar informações de parcelas de campo como resposta para modelos gerados com variáveis de escaneamento a laser aeroembarcado (ALS) e extrapolar os parâmetros para toda a região da plantação; em um segundo momento, utilizar as informações extrapoladas para gerar um modelo composto por variáveis de índice de vegetação (IV) calculados das imagens de satélite. As informações LiDAR (Light Detecting and Ranging) foram obtidas de sete fazendas da região do Vale do Paraíba, estado de São Paulo, em 2012, mesmo ano em que foram coletados os dados das parcelas de campo dos inventários florestais e que as imagens foram obtidas pela constelação de satélites RapidEye. Como variáveis de dados ALS foram utilizados o cálculo de todos os pontos por célula de 5 x 5 m avaliados, alturas máxima, mínima, média, desvio padrão e percentis de altura, calculados pelo programa de análise de dados LASTools®. Foram incluídas também métricas de diferença de alturas do percentil 90 e o percentil 10 (p9010) e a medida dessa diferença relativa à altura do percentil 90 (p9010r). Na modelagem dos dados LiDAR para imagens de satélite foram utilizadas como variáveis, de forma individual ou conjuntamente, os índices NDVI, NDVI705, EVI, GNDVI, SAVI, Red-Green ratio e SRI. Os modelos foram avaliados quanto ao seu desempenho no coeficiente de determinação (R2) e na raíz do erro quadrático médio (RMSE) e em uma análise final predizendo as fazendas em categorias de idade jovem e maduro. O modelo com melhores estimativas (R2 e RMSE) para idade na primeira etapa foi o que possuía variáveis Hp90 e Hp9010r, com R2=0,85 e RMSE=11,736 meses, e para a segunda etapa foi o modelo contendo como variáveis os índices de vegetação NDVI705, Red-Green índex e SAVI, com R2=0,49 e RMSE=0,378 meses. Apesar dos resultados melhores, o modelo contendo índices de vegetação GNDVI e Red-Green índex foi o que melhor representou a distribuição das florestas quanto a sua maturidade.Brazil\'s climate conditions combined with the technological development promote the obtaining of successive increments in forest production and stimulate the expansion of cultivated area with stands for timber production. In order to contribute to the process of quantification of planted forests at regional scale, this study proposes to use combined information from satellite images and data obtained from the LiDAR (Light Detecting and Ranging) for the construction of deterministic models able to distinguish two categories of age groupings of planted forests in the Paraíba Valley, State of São Paulo in Brazil. The first step is to use field plots information in response to models generated with airborne laser scanning (ALS) variables and extrapolate the parameters for the whole region of the plantation; in a second moment, use the information extrapolated to generate a model composed of vegetation index variables (IV) calculated from satellite images. The information LiDAR (Light Detecting and Ranging) were obtained from seven farms in the region of the Paraíba Valley, State of São Paulo, in 2012, the same year in which the data were collected from plots of field forest inventories and that the images were obtained by the RapidEye satellite constellation. As data variables ALS were used the calculation of all points by cell size of 5 x 5 m evaluated, maximum height, minimum, mean, standard deviation and height percentiles, calculated by the data analysis program called LASTools®. Also included height difference metrics 90th percentile and percentile 10th (p9010) and the extent of this difference relative of the 90th percentile (p9010r). In the modeling of data LiDAR data for satellite images were used as variables, individually or jointly, the NDVI index, NDVI705, EVI, GNDVI, SAVI, Red-Green index and SRI. The models were evaluated regarding their performance on the coefficient of determination (R2) and root mean square error (RMSE) and a final analysis predicting the farms into categories of age, young and mature. The model with best estimates (R2 and RMSE) for age at first stage was what possessed variables Hp90 and Hp9010r, with R2 = 0.85 and RMSE = 11.736 months, and the second stage was the model containing as variables the NDVI705 vegetation, Red-Green index and SAVI, with R2 = 0.49 and RMSE = 0.378 months. Despite the better results, the model containing GNDVI and Red-Green vegetation indices was the best represented distribution of forests about your maturity.
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Ball, Braden (Braden R. ). "Simulation as a Method for Determining Inventory Classifications for allocation." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73378.
Full textAbstract:
Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division; in conjunction with the Leaders for Global Operations Program at MIT, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 54-55).
Companies that utilize multiple facilities to satisfy customer demand are faced with the same basic question - where should inventory be held? This thesis presents a method for answering this question, specifically for a company that allocates multiple units across multiple facilities, where any facility can fulfill an order to any customer, though with differing shipping costs. The model presented is a simulation of the shipping costs of various allocation strategies across a range of allocated inventory quantities, where the strategies simulated include consolidating all inventory in a central facility, constraining inventory to regional hubs, and spreading inventory throughout the network. The simulated results are then compared to find the low cost allocation strategy at a given level of allocated inventory. With this comparison, product groupings with the same low cost allocation strategy are identified, and are defined as "Slow", "Medium-A", "Medium-B", and "Fast" products. These groups can then be used to manage the allocation process, where "Slow" inventory is held centrally, "Medium-A" inventory held regionally, and "Fast" inventory spread throughout the network. "Medium-B" items serve as a costmitigating flexible option, where they are spread throughout the network when possible but consolidated when necessary to avoid changing the allocation for "Fast" items. At a broad level, the model presented is applicable to any company that can fulfill demand to a single customer from multiple facilities.
by Braden Ball.
S.M.
M.B.A.
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Wintermann, Gloria-Beatrice, Jenny Rosendahl, Kerstin Weidner, Bernhard Strauß, Andreas Hinz, and Katja Petrowski. "Fatigue in chronically critically ill patients following intensive care - reliability and validity of the multidimensional fatigue inventory (MFI-20)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-235556.
Full textAbstract:
Background
Fatigue often occurs as long-term complication in chronically critically ill (CCI) patients after prolonged intensive care treatment. The Multidimensional Fatigue Inventory (MFI-20) has been established as valid instrument to measure fatigue in a wide range of medical illnesses. Regarding the measurement of fatigue in CCI patients, the psychometric properties of the MFI-20 have not been investigated so far. Thus, the present study examines reliability and validity of the MFI-20 in CCI patients.
Methods
A convenience sample of n = 195 patients with Critical Illness Polyneuropathy (CIP) or Myopathy (CIM) were recruited via personal contact within four weeks (t1) following the transfer from acute care ICU to post-acute ICU at a large rehabilitation hospital. N = 113 (median age 61.1 yrs., 72.6% men) patients were again contacted via telephone three (t2) and six (t3) months following the transfer to post-acute ICU. The MFI-20, the Euro-Quality of Life (EQ-5D-3 L) and the Structured Clinical Interview for the Diagnostic and Statistical Manual of mental disorders DSM-IV (SCID-I) were applied within this prospective cohort study.
Results
The internal consistency Cronbach’s α was adequate for the MFI-total and all but the subscale Reduced Motivation (RM) (range: .50–.91). Item-to-total correlations (range: .22–.80) indicated item redundancy for the subscale RM. Confirmatory Factor analyses (CFAs) revealed poor model fit for the original 5-factor model of the MFI-20 (t2/t3, Confirmatory Fit Index, CFI = .783/ .834; Tucker-Lewis Index, TLI = .751/ .809; Root Mean Square Error of Approximation, RMSEA = .112/ .103). Among the alternative models (1-, 2-, 3-factor models), the data best fit to a 3-factor solution summarizing the highly correlated factors General −/ Physical Fatigue/ Reduced Activity (GF/ PF/ RA) (t2/ t3, CFI = .878/ .896, TLI = .846/ .869, RMSEA = .089/ .085, 90% Confidence Interval .073–.104/ .066–.104). The MFI-total score significantly correlated with the health-related quality of life (range: −.65-(−).66) and the diagnosis of major depression (range: .27–.37).
Conclusions
In the present sample of CCI patients, a reliable and valid factor structure of the MFI-20 could not be ascertained. Especially the subscale RM should be revised. Since the factors GF, PF and RA cannot be separated from each other and the unclear factorial structure in the present sample of CCI patients, the MFI-20 is not recommended for use in this context.
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Tusa, jumbo Eduardo Alejandro. "Apport de la fusion LiDAR - hyperspectral pour la caractérisation géométrique et radiométrique des arbres." Thesis, Université Grenoble Alpes, 2020. https://tel.archives-ouvertes.fr/tel-03212453.
Full textAbstract:
Les forêts de montagne fournissent des services écosystémiques environnementaux (SEE) aux communautés: fourniture de paysages récréatifs, protection contre les risques naturels, soutien à la conservation de la biodiversité, entre autres. La préservation de ces SEE dans l'espace et dans le temps nécessite une bonne caractérisation des ressources. Surtout en montagne, les peuplements sont très hétérogènes et la récolte du bois est économiquement possible grâce à des arbres de plus grande valeur. C'est pourquoi nous voulons pouvoir cartographier chaque arbre et estimer ses caractéristiques, dont la qualité, qui est liée à sa forme et ses conditions de croissance. Les inventaires de terrain ne sont pas en mesure de fournir une couverture mur à mur d'informations détaillées au niveau des arbres à grande échelle. D'un autre côté, les outils de télédétection semblent être une technologie prometteuse en raison de la rapidité et des coûts abordables pour l'étude des zones forestières. Les données LiDAR fournissent des informations détaillées sur la distribution verticale et l'emplacement des arbres, mais elles sont limitées pour la cartographie des espèces. Les données hyperspectrales sont associées aux caractéristiques d'absorption dans le spectre de réflectance du couvert, mais ne sont pas efficaces pour caractériser la géométrie des arbres. Les systèmes hyperspectraux et LiDAR fournissent des données indépendantes et complémentaires qui sont pertinentes pour l'évaluation des attributs biophysiques et biochimiques des zones forestières. Cette thèse de doctorat porte sur la fusion de LiDAR et de données hyperspectrales pour caractériser les arbres forestiers individuels. L'idée maîtresse est d'améliorer les méthodes pour obtenir des informations forestières au niveau de l'arbre en extrayant des caractéristiques géométriques et radiométriques. Les contributions de ce travail de recherche reposent sur: i) un examen mis à jour des méthodes de fusion de données de LiDAR et des données hyperspectrales pour la surveillance des forêts, ii) un algorithme de segmentation 3D amélioré pour délimiter les couronnes d'arbres individuelles basé sur Adaptive Mean Shift (AMS3D) et un ellipsoïde modèle de forme de couronne, iii) un critère de sélection des caractéristiques basé sur le score aléatoire des forêts, cross-validation à 5 folds et une fonction d'erreur cumulative pour la classification des espèces d'arbres forestiers. Les deux principales méthodes utilisées pour obtenir des informations forestières au niveau des arbres sont testées avec des données de télédétection acquises dans les Alpes françaisesMountain forests provide environmental ecosystem services (EES) to communities: supplying of recreational landscapes, protection against natural hazards, supporting biodiversity conservation, among others. The preservation of these EES through space and time requires a good characterization of the resources. Especially in mountains, stands are very heterogeneous and timber harvesting is economically possible thanks to trees of higher value. This is why we want to be able to map each tree and estimate its characteristics, including quality, which is related to its shape and growth conditions. Field inventories are not able to provide a wall to wall cover of detailed tree-level information on a large scale. On the other hand, remote sensing tools seem to be a promising technology because of the time efficient and the affordable costs for studying forest areas. LiDAR data provide detailed information from the vertical distribution and location of the trees, but it is limited for mapping species. Hyperspectral data are associated to absorption features in the canopy reflectance spectrum, but is not effective for characterizing tree geometry. Hyperspectral and LiDAR systems provide independent and complementary data that are relevant for the assessment of biophysical and biochemical attributes of forest areas. This PhD thesis deals with the fusion of LiDAR and hyperspectral data to characterize individual forest trees. The leading idea is to improve methods to derive forest information at tree-level by extracting geometric and radiometric features. The contributions of this research work relies on: i) an updated review of data fusion methods of LiDAR and hyperspectral data for forest monitoring, ii) an improved 3D segmentation algorithm for delineating individual tree crowns based on Adaptive Mean Shift (AMS3D) and an ellipsoid crown shape model, iii) a criterion for feature selection based on random forests score, $5$-fold cross validation and a cumulative error function for forest tree species classification. The two main methods used to derive forest information at tree level are tested with remote sensing data acquired in the French Alps
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Schilling, Anita. "Automatic Retrieval of Skeletal Structures of Trees from Terrestrial Laser Scanner Data." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-155698.
Full textAbstract:
Research on forest ecosystems receives high attention, especially nowadays with regard to sustainable management of renewable resources and the climate change. In particular, accurate information on the 3D structure of a tree is important for forest science and bioclimatology, but also in the scope of commercial applications. Conventional methods to measure geometric plant features are labor- and time-intensive. For detailed analysis, trees have to be cut down, which is often undesirable. Here, Terrestrial Laser Scanning (TLS) provides a particularly attractive tool because of its contactless measurement technique. The object geometry is reproduced as a 3D point cloud. The objective of this thesis is the automatic retrieval of the spatial structure of trees from TLS data. We focus on forest scenes with comparably high stand density and with many occlusions resulting from it. The varying level of detail of TLS data poses a big challenge. We present two fully automatic methods to obtain skeletal structures from scanned trees that have complementary properties. First, we explain a method that retrieves the entire tree skeleton from 3D data of co-registered scans. The branching structure is obtained from a voxel space representation by searching paths from branch tips to the trunk. The trunk is determined in advance from the 3D points. The skeleton of a tree is generated as a 3D line graph. Besides 3D coordinates and range, a scan provides 2D indices from the intensity image for each measurement. This is exploited in the second method that processes individual scans. Furthermore, we introduce a novel concept to manage TLS data that facilitated the researchwork. Initially, the range image is segmented into connected components. We describe a procedure to retrieve the boundary of a component that is capable of tracing inner depth discontinuities. A 2D skeleton is generated from the boundary information and used to decompose the component into sub components. A Principal Curve is computed from the 3D point set that is associated with a sub component. The skeletal structure of a connected component is summarized as a set of polylines. Objective evaluation of the results remains an open problem because the task itself is ill-defined: There exists no clear definition of what the true skeleton should be w.r.t. a given point set. Consequently, we are not able to assess the correctness of the methods quantitatively, but have to rely on visual assessment of results and provide a thorough discussion of the particularities of both methods. We present experiment results of both methods. The first method efficiently retrieves full skeletons of trees, which approximate the branching structure. The level of detail is mainly governed by the voxel space and therefore, smaller branches are reproduced inadequately. The second method retrieves partial skeletons of a tree with high reproduction accuracy. The method is sensitive to noise in the boundary, but the results are very promising. There are plenty of possibilities to enhance the method’s robustness. The combination of the strengths of both presented methods needs to be investigated further and may lead to a robust way to obtain complete tree skeletons from TLS data automaticallyDie Erforschung des ÖkosystemsWald spielt gerade heutzutage im Hinblick auf den nachhaltigen Umgang mit nachwachsenden Rohstoffen und den Klimawandel eine große Rolle. Insbesondere die exakte Beschreibung der dreidimensionalen Struktur eines Baumes ist wichtig für die Forstwissenschaften und Bioklimatologie, aber auch im Rahmen kommerzieller Anwendungen. Die konventionellen Methoden um geometrische Pflanzenmerkmale zu messen sind arbeitsintensiv und zeitaufwändig. Für eine genaue Analyse müssen Bäume gefällt werden, was oft unerwünscht ist. Hierbei bietet sich das Terrestrische Laserscanning (TLS) als besonders attraktives Werkzeug aufgrund seines kontaktlosen Messprinzips an. Die Objektgeometrie wird als 3D-Punktwolke wiedergegeben. Basierend darauf ist das Ziel der Arbeit die automatische Bestimmung der räumlichen Baumstruktur aus TLS-Daten. Der Fokus liegt dabei auf Waldszenen mit vergleichsweise hoher Bestandesdichte und mit zahlreichen daraus resultierenden Verdeckungen. Die Auswertung dieser TLS-Daten, die einen unterschiedlichen Grad an Detailreichtum aufweisen, stellt eine große Herausforderung dar. Zwei vollautomatische Methoden zur Generierung von Skelettstrukturen von gescannten Bäumen, welche komplementäre Eigenschaften besitzen, werden vorgestellt. Bei der ersten Methode wird das Gesamtskelett eines Baumes aus 3D-Daten von registrierten Scans bestimmt. Die Aststruktur wird von einer Voxelraum-Repräsentation abgeleitet indem Pfade von Astspitzen zum Stamm gesucht werden. Der Stamm wird im Voraus aus den 3D-Punkten rekonstruiert. Das Baumskelett wird als 3D-Liniengraph erzeugt. Für jeden gemessenen Punkt stellt ein Scan neben 3D-Koordinaten und Distanzwerten auch 2D-Indizes zur Verfügung, die sich aus dem Intensitätsbild ergeben. Bei der zweiten Methode, die auf Einzelscans arbeitet, wird dies ausgenutzt. Außerdem wird ein neuartiges Konzept zum Management von TLS-Daten beschrieben, welches die Forschungsarbeit erleichtert hat. Zunächst wird das Tiefenbild in Komponenten aufgeteilt. Es wird eine Prozedur zur Bestimmung von Komponentenkonturen vorgestellt, die in der Lage ist innere Tiefendiskontinuitäten zu verfolgen. Von der Konturinformation wird ein 2D-Skelett generiert, welches benutzt wird um die Komponente in Teilkomponenten zu zerlegen. Von der 3D-Punktmenge, die mit einer Teilkomponente assoziiert ist, wird eine Principal Curve berechnet. Die Skelettstruktur einer Komponente im Tiefenbild wird als Menge von Polylinien zusammengefasst. Die objektive Evaluation der Resultate stellt weiterhin ein ungelöstes Problem dar, weil die Aufgabe selbst nicht klar erfassbar ist: Es existiert keine eindeutige Definition davon was das wahre Skelett in Bezug auf eine gegebene Punktmenge sein sollte. Die Korrektheit der Methoden kann daher nicht quantitativ beschrieben werden. Aus diesem Grund, können die Ergebnisse nur visuell beurteiltwerden. Weiterhinwerden die Charakteristiken beider Methoden eingehend diskutiert. Es werden Experimentresultate beider Methoden vorgestellt. Die erste Methode bestimmt effizient das Skelett eines Baumes, welches die Aststruktur approximiert. Der Detaillierungsgrad wird hauptsächlich durch den Voxelraum bestimmt, weshalb kleinere Äste nicht angemessen reproduziert werden. Die zweite Methode rekonstruiert Teilskelette eines Baums mit hoher Detailtreue. Die Methode reagiert sensibel auf Rauschen in der Kontur, dennoch sind die Ergebnisse vielversprechend. Es gibt eine Vielzahl von Möglichkeiten die Robustheit der Methode zu verbessern. Die Kombination der Stärken von beiden präsentierten Methoden sollte weiter untersucht werden und kann zu einem robusteren Ansatz führen um vollständige Baumskelette automatisch aus TLS-Daten zu generieren
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Heitfeld, Michael, Frank Denys, Marije Schouwstra, Johannes Klünker, Peter Rosner, and Jaap Spaans. "Spätfolgen des Steinkohlenbergbaus in Südlimburg/Niederlande: Bestandsaufnahme und Prognosen." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2017. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-228512.
Full textAbstract:
Das niederländische Wirtschaftsministerium hat 2014 eine umfassende Studie über alle zukünftig noch sicherheitlich relevanten Themenbereiche des Nachbergbaus für das Südlimburger Steinkohlenrevier beauftragt. Der Bergbau wurde hier bis 1974 stillgelegt; der Grubenwasseranstieg ist aber aufgrund der hydraulischen Verbindungen zu dem erst in 1992 stillgelegten Aachener Steinkohlenrevier noch nicht abgeschlossen. Der Auftrag wurde an ein deutsch/niederländisches Projektteam vergeben, das sowohl detaillierte Kenntnisse der regionalen Hydrogeologie besitzt als auch eine Bearbeitung von Fragestellungen im Zusammenhang mit Risiken durch bergbauliche Hinterlassenschaften auf dem aktuellen Stand der Technik und nach neuesten Forschungsergebnissen gewährleisten konnte. Auf der Grundlage einer umfassenden Bestandsaufnahme sowie einem regionalen Grundwassermodell wurden eine Risikobewertung vorgenommen und Konzepte für Maßnahmen und ein Monitoring erarbeitet. Die Studie wurde Ende 2016 veröffentlicht; der vorliegende Beitrag liefert eine Zusammenfassung der Ergebnisse und EmpfehlungenThe Ministerie van Economische Zaken (EZ) of the Netherlands in 2014 initiated the project „Na-ijlende gevolgen steenkolenwinning Zuid-Limburg“ and commissioned a comprising study considering all future safety aspects with respect to the potential consequences of the former hard coal exploitation in South Limburg. The coal mines were abandoned until 1974; due to hydraulic connections to the Aachen mining district, that was abandoned in 1992, the rise of the mine water has not finished yet. The study was assigned to a German-Dutch project group with comprising references of the regional Hydrogeology as well as excellent expertise in all questions regarding risks from mining relicts. Based on a comprising inventory and a regional groundwater model a risk assessment was carried out and a concept for measures and monitoring elaborated. The study was published in 2016; the paper in hand provides a summary of the results and recommendations
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Glöckner, Richard. "Der Zusammenhang von Social-Media-Nutzung und psychischer Gesundheit bei Silver Surfern." Master's thesis, Universitätsbibliothek Chemnitz, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-231928.
Full textAbstract:
Innerhalb der letzten Jahre nahm der Anteil aktiver Internetnutzer über 50 Jahre rapide zu. Auch die damit verbundene Präsenz derer in sozialen Online-Medien erfuhr einen Zuwachs. Die Risiken und Potenziale der Aktivitäten auf diesen Plattformen wurden bisher
nahezu ausschließlich altersunabhängig oder nur in Bezug auf eine recht junge Altersgruppe untersucht. Um auf den daraus ergehenden Forschungsbedarf zu reagieren, wurde auf Basis umfassender Literaturrecherche ein entsprechendes Messinstrument in Form eines Online-Fragebogens entwickelt. Hauptelemente sind dabei die Art und Weise der Social-Media-Nutzung, die durch den Grad der Depression repräsentierte psychische Gesundheit, sowie diese beeinflussende Faktoren. Zu Erfassung der depressiven Ausprägung wurde das verkürzte Beck-Depressions-Inventar implementiert und für einen Korrekturversuch des vermuteten Gender Bias angepasst. Der Feldzugang wurde durch das Respondent Driven Sampling in Kombination mit der Vorgehensweise des viralen Marketings geschaffen. Der Fragebogen sowie dessen geplante Verbreitung wurde mit Hilfe eines Pretest auf seine Güte und etwaige Probleme geprüft. Um die ermittelten Effekte der Zielgruppe (N=25) verlässlich zuschreiben zu können, wurde in gleichem Maß eine Refrenzgruppe (N=26) befragt. Die ermittelten Ergebnisse konnten einen Optimierungsbedarf am Erhebungsinstrument und der Umsetzung der gewählten Verbreitungsmethode aufzeigen. Zudem wurden erste Erfolge für den Ausgleichsversuch des Gender Bias verzeichnet. Die Zusammenhänge von Art und Weise der Social-Media-Nutzung und dem Grad der Depressionen wurden in Anlehnung an bestehende theoretische Ansätze untersucht. Neben der persönlichen Relevanz einzelner Grundfunktionen konnten bei den Silver Surfern vor allem die Motive sozialer Interaktion innerhalb sozialer Online-Medien die Ausprägung von Depressionen erklären.
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Fredriksson, Amanda, and Lisa Ahlgren. "Lagerdesignens effekt på orderplockprocessen : En nulägeskartläggning på en distributionscentral för motiv till förbättringsåtgärder som ökar effektiviteten i plockflödet." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-41525.
Full textAbstract:
Purpose – The purpose of the study is to identify a distribution center's deficiencies in the warehouse layout and article placement to enable streamlining in the order picking process. In order to enable a response to the purpose, the following three questions have been formulated: 1. What problems may occur in the warehouse layout of a distribution center that affects the effectiveness of the order picking process? 2. What problems may occur in the article placement at a distribution center that affects the effectiveness of the order picking process? 3. What improvements can be made to the warehouse layout and article placement at a distribution center to streamline the order picking process? Method – In order to define the problem area, a pilot study was conducted at a distribution center, which formed the purpose and questions of the study. To enable its answer, a case study and literature review has been conducted as methods. The case study consisted of observations, surveys, document studies and benchmarking to generate empirical data to the study. Literature review has been designed to create a theoretical framework around warehouse layout and article placement effect on the order picking process. The data collected has then been analyzed and discussed to enable improvement proposals. Findings – Several problems have been identified in the warehouse layout and article placement that directly impact the order picking process. In order to prevent and change these problems, understanding the complexity of warehouse building is required. It is important to have a clear strategy for which articles that are considered most important to the company. A recommendation may be to place the most high-frequency products in connection with the packing station. Once the strategy is determined, the storage systems can be dimensioned and the route method set. When all these processes interact with each other, a more efficient order pick will occur, which will allow companies to reduce costly waste. Implications – The authors have founded the study within a problem area where there already exist a lot of theories. Therefore the implication of the study consisted of highlighting a new point of view of the already existing theory of warehouse layout, article placement and order picking. The new point of view, therefore, can assist businesses to get a better discussion and understanding of how their warehouse layout and article placement should be designed, which may allow the study to affect the development of other companies. Limitations – The limitations of the study consist of studying only one business as well as some lack of information. Should more businesses and respondents be presented within the study, more deficiencies could have been identified and the results had become more credible and generalizable. Some missing information has also affected the study. Within improvement measures, there was no access to some article information required in the ABC-analysis. Furthermore, poles were discovered in the warehouse layout that affected the formation of the improved warehouse layouts. The lack of information may therefore have affected the final result.