To see the other types of publications on this topic, follow the link: Jacmel.
Dissertations / Theses on the topic 'Jacmel'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Jacmel.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Thermil, Kareen. "Future Tourism Developments in Haiti: Jacmel, Haiti, a case study." Thesis, The University of Arizona, 1998. http://hdl.handle.net/10150/559195.
Full text
2
Eklöf, Andreas. "Biker Jacket." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17065.
Full textAbstract:
Staring to explore the fashionable biker jacket from the fifties lead to the discover that it hasn’t changed much since its origin. The stereotyped biker jacket with the genuine black leather and raw details is an impact model and thought the jacket no longer is worn while riding a bike is it still presenting an image of a rebellious life.The aim of this work is to explore our traditional view of the biker jacket through material and shape. Discovering that the bikers riding position has big similarities with a standing cow gave background to the material used in the classical jackets, the cow. A living animal, a material that once lived. To use the cows and the biker’s upper body as a model, recreating its shape into biker jacket’s to develop the shape of the biker jacket further. By experimenting with untraditional non-textile materials instead of using leather hopefully develop the traditional view of a jacket and bring alternative material and construction forward. Conclusion of the work is that when the materials with strong associations are mixed with the biker shape the materials take over and the definition of the biker jacket becomes more complex. New questions that has arise could be the use of other technical materials, what happens when giving the jacket other functions, is it still a biker jacket then.Program: Modedesignutbildningen
3
Jackel, Andrej [Verfasser]. "Cyclometallierte Platinkomplexe mit Farbstoff-basierten Liganden / Andrej Jackel." Konstanz : Bibliothek der Universität Konstanz, 2016. http://d-nb.info/1124780742/34.
Full text
4
Perdue, Peter C. "China Marches West: Jacket cover." Harvard University Press, 2005. http://hdl.handle.net/1721.1/9567.
Full textAbstract:
The China we know today is the product of vast frontier conquests of the seventeenth and eighteenth centuries by the expanding Qing empire. China Marches West tells the story of this unprecedented expansion and explores its consequences for the modern Chinese nation.Jacket cover of book
5
Ripley, Kevin John. "The performance of jacked pipes." Thesis, University of Oxford, 1989. http://ora.ox.ac.uk/objects/uuid:63fb7691-90a0-46d0-919d-2d67b5261c89.
Full textAbstract:
Pipejacking is a tunnel construction technique which is increasing in popularity, but fundamental research is necessary to fully understand the extent of its possible uses and limitations. This dissertation reports on laboratory research into the performance of reinforced concrete pipes, assessment of pipe joints and the use of joint packing materials. The research has addressed specific problems which the tunnelling fraternity have raised. Model pipes have been constructed at scales of 1:6 and 1:10.5 using reinforced microconcrete and they have been tested in either a sand filled chamber or between supporting yokes. Current British Standard tests have been used as a control on the quality of pipe manufacture. Data have been recorded of changes in soil pressures, pipe geometry and strains induced in the pipes. The tests have investigated deformation of pipes, deflection angles between consecutive pipes, distribution of stress concentrations and the effects of the use of joint packing materials on allowable jacking loads and induced stress magnitudes in the pipes. A review of current pipejacking practice is presented and recommendations for the control and supervision of pipejacking operations are made. The conclusions include recommendations for fieldwork monitoring and implications of this stage of the research to industry. Recommendations are made for maximum installation jacking loads for any given deflection angle between pipes. The prediction of friction angles at the pipe soil interface have been assessed at different soil stress levels and new recommendations are made. The effects of cyclic loading on the pipejacking system and transfer from jacking load to ground loading once the pipes are installed are presented. The criteria used in the selection of a recommended joint packing material for use in jacking operations have been included. Failure modes of pipes are stated and recommendations are made for pipe design, installation and monitoring to predict and prevent such failures. This dissertation is the report on the first stage of an overall programme of research which is now set to progress with monitoring of pipejacking operations on several construction sites.
6
Jackel, Frank M. [Verfasser]. "Die kontinuierliche Herstellung von Tailor Rolled Strips durch Bandprofilwalzen / Frank M Jackel." Aachen : Shaker, 2010. http://d-nb.info/1124364234/34.
Full text
7
Jackel, Frank Martin [Verfasser]. "Die kontinuierliche Herstellung von Tailor Rolled Strips durch Bandprofilwalzen / Frank M Jackel." Aachen : Shaker, 2010. http://nbn-resolving.de/urn:nbn:de:101:1-201701291283.
Full text
8
Valpiani, Giovanni. "Welding Book of an Offshore Jacket." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15255/.
Full textAbstract:
La tesi riguarda la redazione del "Welding Book" per il caso studio di un Jacket Offshore. Il corpo del testo è costituito da una breve introduzione sulla saldatura e sul progetto che è stato preso in considerazione per realizzare il Welding Book. Una seconda parte teorica con richiami alle normative e specifiche utilizzate, riguardante le nozioni necessarie per realizzare il libro di saldatura. Una terza parte tecnica che racchiude il Welding Book; in particolare un elenco di tutte le saldature da effettuare nel progetto, le WPS (Welding Procedure Specification) e le WPQR (Welding Procedure Qualification Records). Concludendo i disegni del Jacket Offshore e i dettagli costruttivi delle saldature.
9
Yu, Feng, and 俞峰. "Behavior of large capacity jacked piles=." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31450866.
Full text
10
Ewertson, Sara-Lovise. "PUFFER-JACKET-SOFT-SQUAD, PURE SCULPTURE!" Thesis, Konstfack, Textil, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-6878.
Full textAbstract:
This degree project starts in the interest for fashion spaces. With this project I want to challenge the way we can experience fashion. I want to push forward the concepts; showroom/ collection. The body is always important and the starting point in my projects. The body is essential both in the sketching and in the final experience. More specifically, In this degree project I am investigating how body, furniture and puffer jacket can relate to each other. How a puffer jacket collection can be perceived spatially and what will it be then.
11
Jacome, Natalie B. "The effects of outcome reversals on children's conditional discrimination, equivalence, and reinforcer-probe performances /." Electronic version (PDF), 2007. http://dl.uncw.edu/etd/2007-2/jacomen/nataliejacome.pdf.
Full text
12
Perz, Magdalena. "Das Frauenbild im symbolistischen Werk von Jacek Malczewski (1854 - 1929) die Entwicklung der Kunst des Jungen Polen." Berlin Logos-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2695631&prov=M&dok_var=1&dok_ext=htm.
Full text
13
Flesche, Arve. "Fatigue in Jacket Structures With Impaired Integrity." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18530.
Full textAbstract:
Present regulations for offshore structures on the Norwegian continental shelf havea requirement for Accidental Limit State redundancy and Fatigue Limit State redundancyin a damaged state. However, the requirement is far more defined forthe Accidental Limit State than for the Fatigue Limit State. An increased understandingof factors governing fatigue redundancy would create a basis to form acomprehensive definition.In literature, the term redundancy is defined in several ways. The different methodscan be divided into two major categories, namely deterministic and probabilisticapproaches. In general, redundancy may be defined as the absence of memberswhose failure would lead to global collapse. Within both the deterministic and theprobabilistic framework, several redundancy factors are usually defined, and thereare resemblance between some of them. In probabilistic methods, the reliabilitymethod is commonly applied through the First Order Reliability Method.Fatigue damage is a primarily concern regarding the integrity for offshore structures.A near constant subjection to cyclic loadings from wind, current and wavesinitiates a cumulative damage process which leads to a certain fatigue life for themembers in the structure. The lifetime may be calculated using either a fracturemechanics approach or a SN-curve approach. There exists several approaches tocalculate the stress levels to be used in the fatigue analyses, and the choice ofmethod is mainly based on whether or not the structure under consideration isdynamically behaving or may be regarded as quasi-static. Also, there may be nonlinearitiesthat needs to be accounted for and naturally this will affect the choiceof analysis method. However, large uncertainties are associated with fatigue calculationsregardless of analysis approach. Thus, a probabilistic framework is highlyrelevant in order to estimate the risk of failure due to fatigue.A study on how impaired integrity affects the fatigue life has been performed fortwo jackets; one highly redundant four-legged jacket and one less redundant threeleggedjacket. The main goal has been to investigate the fatigue redundancy of thestructures, in order to link up the risk of accelerated fatigue due to damage withthe risk of failure due to extreme environmental actions, which may eventually leadto structural collapse. A stochastic fatigue analysis approach was chosen, and theanalyses was in agreement with the standards governing the Norwegian continentalshelf at the time of this thesis. Pushover analyses has been performed on the jacketsto give an insight in their redundancy, and a calculation of changes in the naturalperiods under impaired integrity has also been done.The four-legged jacket was proven to be highly redundant, and had small changesin the natural period under impaired integrity. The three-legged jacket on the otherhand, had some damage cases with a rather large increase. Also, the redundancyfactor R4 was significantly lower for the three-legged jacket, thus confirming it tobe less redundant than the four-legged jacket. A large change in the natural periodwill alter the dynamic response, thus the fatigue life is vastly connected to changesin global stiffness.Trying to explain the changes in fatigue life for the two jackets under impairedintegrity without using a deterministic approach, i.e. calculate the fatigue life forthe specific damage case, was proven to be very difficult. There seems to be noeasy way to isolate the severity of the fatigue life reduction since large changesare occurring throughout almost the entire structure for several damage cases, aswell as large spread in the values them self. However, there was also found sometrends in the results. One of them, was that the closer a member is to the damagedelement, the larger is the expected reduction in fatigue life. Another trend, is thata large fatigue accelerator factor is expected in almost every damage case, thus onemay expect large changes for most of the damage scenarios.Another vastly occurring phenomenon were the location of the damaged memberswho gave the lowest fatigue life in the structures. For the four-legged jacket, thisinvolved damage in the caisson supports. The three-legged jacket, however, hadthe lowest fatigue lives occurring for damage cases in the top frame where there isa lack of deterministic redundancy.There seems to be no fatigue redundancy for the jackets, as there are large fatigueaccelerator factors occurring. There is also the very low calculated fatigue life inthe most extreme cases. However, there has been found a slight correlation betweena large reduction in fatigue life and a large initial fatigue life. What should also betaken into account though, is both the risk related to the fatigue lives found, andthe accuracy of the values due to the linearised analysis.
14
Minnie, Liaan. "Effects of lethal management on black-backed jackal population structure and source-sink dynamics." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/12658.
Full textAbstract:
Lethal carnivore management, aimed at reducing carnivore impacts, threatens the persistence of carnivores globally. The effects of killing carnivores will depend on their life histories and social structures. Smaller canids, like black-backed jackals (Canis mesomelas), are highly adaptable and display variable population-level responses to mortality sources, which may contribute to their success in fragmented landscapes. Jackals, the dominant predator of livestock in South Africa, are widely hunted to reduce this predation. This hunting is heterogeneous across the landscape, focussed on livestock and game farms, with nature reserves acting as refuges. The aim of this research was to investigate the ecology and population dynamics of jackals in response to heterogeneous anthropogenic mortality. I hypothesized that the spatial variation in hunting results in the formation of a source-sink population structure, which contributes to the persistence of jackals. I addressed this hypothesis by evaluating two criteria, essential for the formation of a source-sink system in larger mammals. Firstly, I confirm that hunting pressures result in the formation of distinct subpopulations with asymmetrical dispersal (i.e. compensatory immigration) from unhunted reserves to neighbouring hunted farms. Secondly, I show that jackal subpopulation display asynchronous demographics, with farm populations displaying a relatively younger age structure and an associated increase in reproductive output (i.e. compensatory reproduction). This confirms the formation of a hunting-induced source-sink system. additionally, I show that jackals have a catholic diet, which confers a level of adaptability to direct (anthropogenic mortality, prey provisioning) and indirect (alteration in prey base) habitat modifications. This dietary flexibility allows jackals to obtain the appropriate resources to achieve reproductive condition. The relatively better body condition of younger jackals in sink habitats allows for compensatory reproduction which contributes to the success of jackals on hunted farms. Based on my findings, I hypothesize that the compensatory life history responses of jackals to anthropogenic mortality may be ascribed to two interconnected mechanism. Dispersal is presumably driven by density-dependent interference competition, as dominant territorial pairs outcompete subordinates in high-density reserve areas, forcing them to disperse onto low-density farms (i.e. ideal despotic model). Additionally, farms likely represent attractive habitats, owing to a reduction in conspecifics and a concomitant increase in resource availability (including anthropogenic resource provisioning). Therefore, dispersing subordinates presumably select for farms which are perceived as good quality habitats, as the high risks of anthropogenic mortality cannot be perceived by dispersing individuals. This results in the formation of an attractive sink or ecological trap. These compensatory processes will continue to counter population management actions as long as recruitment from unmanaged areas persists. This hypothesis provides a conceptual framework for future research directions in understanding jackal persistence and management (i.e. specifically focussing on controlling dispersal) of jackal populations.
15
Peng, Li. "Analysis and Design of Offshore Jacket Wind Turbine." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11612.
Full textAbstract:
Offshore wind is an attractive source of renewable energy. In order to harvest this abundant energy source wind turbine farms are needed. In order to extend the application of offshore fixed wind turbine (OFWT) in deep water where winds are stronger and steadier, there are research works on fixed wind turbine which is ongoing on larger water depth like 70-100m. The focus in this thesis is analyses to support design of OFWT jacket substructure piled to the seabed, with a particular focus the modeling and ultimate capacity behavior of such facilities subjected to extreme wind and wave forces. During modelling, Genie and USFOS are applied to re-design and modify the finite element model of wind turbine substructure given by Aker Solutions. New design jacket substructures are both for the intermediate water depth 70 meters and 100 meters with the soil and pile modelling based on the Ekofisk data. Based on design load case, both of the static pushover analysis and API design code check is performed on the jacket substructure model to check the ultimate capacity. The pushover analysis is performed through nonlinear finite elemnt code USFOS. The API code check is based on hand calculation.The response of the jacket substructures under design load case is most interested in, which could indicate the critical position on jacekt, furthermore the effect of the direction and size of the wind and wave load. Meanwhile, through comaprission of results, the two methods could confirm each other, which could help to get the deeper understanding of ULS of offshore jacket structure.
16
Pathare, Sneha P. "Detection of black-backed jackal in still images." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97023.
Full textAbstract:
Thesis (MSc)--Stellenbosch University, 2015.ENGLISH ABSTRACT: In South Africa, black-back jackal (BBJ) predation of sheep causes heavy losses to sheep farmers. Different control measures such as shooting, gin-traps and poisoning have been used to control the jackal population; however, these techniques also kill many harmless animals, as they fail to differentiate between BBJ and harmless animals. In this project, a system is implemented to detect black-backed jackal faces in images. The system was implemented using the Viola-Jones object detection algorithm. This algorithm was originally developed to detect human faces, but can also be used to detect a variety of other objects. The three important key features of the Viola-Jones algorithm are the representation of an image as a so-called ”integral image”, the use of the Adaboost boosting algorithm for feature selection, and the use of a cascade of classifiers to reduce false alarms. In this project, Python code has been developed to extract the Haar-features from BBJ images by acting as a classifier to distinguish between a BBJ and the background. Furthermore, the feature selection is done using the Asymboost instead of the Adaboost algorithm so as to achieve a high detection rate and low false positive rate. A cascade of strong classifiers is trained using a cascade learning algorithm. The inclusion of a special fifth feature Haar feature, adapted to the relative spacing of the jackal’s eyes, improves accuracy further. The final system detects 78% of the jackal faces, while only 0.006% of other image frames are wrongly identified as faces.
AFRIKAANSE OPSOMMING: Swartrugjakkalse veroorsaak swaar vee-verliese in Suid Afrika. Teenmaatreels soos jag, slagysters en vergiftiging word algemeen gebruik, maar is nie selektief genoeg nie en dood dus ook vele nie-teiken spesies. In hierdie projek is ’n stelsel ontwikkel om swartrugjakkals gesigte te vind op statiese beelde. Die Viola-Jones deteksie algoritme, aanvanklik ontwikkel vir die deteksie van mens-gesigte, is hiervoor gebruik. Drie sleutel-aspekte van hierdie algoritme is die voorstelling van ’n beeld deur middel van ’n sogenaamde integraalbeeld, die gebruik van die ”Adaboost” algoritme om gepaste kenmerke te selekteer, en die gebruik van ’n kaskade van klassifiseerders om vals-alarm tempos te verlaag. In hierdie projek is Python kode ontwikkel om die nuttigste ”Haar”-kenmerke vir die deteksie van dié jakkalse te onttrek. Eksperimente is gedoen om die nuttigheid van die ”Asymboost” algoritme met die van die ”Adaboost” algoritme te kontrasteer. ’n Kaskade van klassifiseerders is vir beide van hierdie tegnieke afgerig en vergelyk. Die resultate toon dat die kenmerke wat die ”Asymboost” algoritme oplewer, tot laer vals-alarm tempos lei. Die byvoeging van ’n spesiale vyfde tipe Haar-kenmerk, wat aangepas is by die relatiewe spasieëring van die jakkals se oë, verhoog die akkuraatheid verder. Die uiteindelike stelsel vind 78% van die gesigte terwyl slegs 0.006% ander beeld-raampies verkeerdelik as gesigte geklassifiseer word.
17
Marshall, Mark Andrew. "Pipe-jacked tunnelling : jacking loads and ground movements." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:94675596-b2cf-4375-82f8-ea36e8a99f07.
Full textAbstract:
The reported work constituted the third phase of a programme of research into the performance of concrete pipes during installation by the pipe-jacked tunnelling technique. This third stage was a continuation of the on-site monitoring of full-scale pipe jacks during construction. Four schemes were monitored in different ground conditions: London clay, dense fine sand below the water table, stiff glacial till and soft alluvial clay. Pipe sizes ranged from 1000mm to 1800mm internal diameter and excavation methods included hand tools, slurry machines and an open face tunnel boring machine. The main objective was to collect information on jacking loads and stresses at the pipe-soil interface to provide a better basis for future designs. This was achieved by building twelve stress cells -capable of measuring total normal stresses, shear stresses and pore pressures - into the wall of a standard concrete jacking pipe that could be inserted anywhere in the pipe string. Jacking loads and forward movement of the pipe string were simultaneously recorded and the results were correlated against site activities, including lubrication operations, and tunnel alignment surveys. Another objective was to monitor the ground response by measuring displacements around the tunnel and ground pressures above the perpendicular to the intended line. Ground movements were measured using conventional surveying techniques for surface settlements, and inclinometer access tubes for sub-surface deformation. On one scheme, electro-levels were employed in a near-horizontal tube to measure centre line settlement as the tunnel bore advanced. Push-in spade cells and pneumatic piezometers were installed on two schemes to measure the change in horizontal pressures with the passage of the shield. Because of the myriad data collected, it has only been possible to present a summary of the results obtained. Jacking force records from all the monitored schemes - including the previous fieldwork stage - are presented. The pattern of jacking load build up and the magnitude of frictional resistance can differ significantly according to the type of ground and use of lubricants. Stress measurements at the pipe-soil interface show that the interaction between jacking loads, pipeline misalignment, stoppages, lubrication, excavation technique etc, is highly complex. Ground movement measurements compared to well established empirical predictive methods show that short-term displacements are related to ground losses caused by closure of the overbreak void between shield and pipe.
18
Murray, Brian A. "Hydrodynamic loading due to appurtenances on jacket structures." Thesis, University of Newcastle Upon Tyne, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239242.
Full text
19
Robertson, Katherine Ella. "The role of mutants in the study of vertebrate limb development : analysis of hypodactyly in the mouse and polydactyly in the chick." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266228.
Full text
20
Barcena, Pasamontes Lucia, and Torres Fernando Gomez. "Topology optimization of jacket support structures with genetic altorithm." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24574.
Full textAbstract:
This thesis is a study of the optimization of the support structure for offshore wind turbines with a genetic algorithm. The optimization of these structures plays an important role in the plan for reduction of the costs proposed for the coming years in the field of offshore wind energy.The support structure proposed to optimize in this study is based on the model designed for the OC4 project. This model consists of 4 legs and 4 levels of X-braces forming a lattice. The optimization proposed in this thesis is based on the minimization of the weigh and the damaget of the structure establishing as design variables the geometry (diameters and thickness of the beams) and topology (location nodes). Material properties will not change.In order to perform this task, a genetic algorithm has been implemented in Matlab (Version R2013a). The variables are converted into binary code in order to combine two different designs. The pairs of designs selected to be combined are chosen randomly within the population and after the combination, or crossed over, two new designs are generated. After that, the new designs are evaluated based on a fitness function (weight or damage) and selected again, based on the fitness value. This is an iterative process and finishes when an optimal design is found. Mutation and immigration operators are used in order to increase the variety in the search space.Every iteration, analysis of each design is performed with a complete wind turbine simulation for a loadcase in the time-domain. Data obtained from the simulation are used for stress calculation and checked fatigue and ultimate limits.These results demonstrate that automatic optimization of wind turbine support structures is feasible with a genetic algorithm, even for complex structures such us the one analyzed in this thesis.
21
Norris, Paul. "The behaviour of jacked concrete pipes during site installation." Thesis, University of Oxford, 1992. http://ora.ox.ac.uk/objects/uuid:7081bc8a-c149-4706-83f9-d041ce066819.
Full textAbstract:
While much money and effort has been spent by manufacturers and users of pipe jacking equipment to develop suitable techniques, this work appears to be the first to study the method at full scale, in a scientific research programme. It has involved monitoring a series of five pipe jacks during construction. In each case a heavily instrumented pipe was incorporated into the pipe string to measure pipe joint stresses, pipe and joint compressions and contact stresses between pipe and ground. Total jacking loads and movements of the pipe string were also measured and all results correlated with a detailed site log, full tunnel alignment surveys, and observed ground conditions. The success of the site monitoring has been highly dependent upon the development of a suitable instrumentation and data acquisition system in conjunction with appropriate site procedures for working in the restricted and physically demanding pipe jack environment without undue disruption to normal site operations. The build up of total jacking force is the result of highly complex soil-pipe interaction. The local interface stresses are essentially frictional in most ground conditions, and can be related to the shear strength of the ground. The problem is in determining the effective radial stresses which are affected by soil insitu stresses, stiffness and strength; groundwater conditions; rate of progress; pipeline misalignment and use of lubricants. Relations between pressure distributions at pipe joints and measured tunnel alignments are presented. That small angular deviations between successive pipes cause severe localisation of stresses on their ends is clearly demonstrated. Careful back analysis shows that the linear stress approach of the Concrete Pipe Association of Australia can adequately match the measured stresses and could be used by pipe manufacturers to provide design data on allowable jacking forces for pipes on the basis of pipe size, packer properties, concrete strength and angular alignment. It is also clear from the small pipe barrel stresses that improved packing materials would allow more of the potential strength of pipes to be achieved. Since relative angular than absolute deviations control transfer mechanisms between pipes, uncritical adherence to specifications based on absolute line and level is counter-productive.
22
Cardwell, Thomas. "Still life and death metal : painting the battle jacket." Thesis, University of the Arts London, 2017. http://ualresearchonline.arts.ac.uk/12036/.
Full textAbstract:
This thesis aims to conduct a study of battle jackets using painting as a recording and analytical tool. A battle jacket is a customised garment worn in heavy metal subcultures that features decorative patches, band insignia, studs and other embellishments. Battle jackets are significant in the expression of subcultural identity for those that wear them, and constitute a global phenomenon dating back at least to the 1970s. The art practice juxtaposes and re-contextualises cultural artefacts in order to explore the narratives and traditions that they are a part of. As such, the work is situated within the genre of contemporary still life and appropriative painting. The paintings presented with the written thesis document a series of jackets and creatively explore the jacket form and related imagery. The study uses a number of interrelated critical perspectives to explore the meaning and significance of the jackets. Intertextual approaches explore the relationship of the jackets to other cultural forms. David Muggleton’s ‘distinctive individuality’ and Sarah Thornton’s ‘subcultural capital’ are used to emphasise the importance of jacket making practices for expressions of personal and corporate subcultural identity. Italo Calvino’s use of postmodern semiotic structures gives a tool for placing battle jacket practice within a shifting network of meanings, whilst Richard Sennett’s‘material consciousness’ helps to understand the importance of DIY making practices used by fans. The project refers extensively to a series of interviews conducted with battle jacket makers between 2014 and 2016. Recent art historical studies of still life painting have used a materialist critique of historic works to demonstrate the uniqueness of painting as a method of analysis. The context for my practice involves historical references such as seventeenth century Dutch still life painting. The work of contemporary artists who are exploring the themes and imagery of extreme metal music is also reviewed.
23
Colunas, Márcio Filipe Moutinho. "Droid Jacket: a mobile monitoring system for a team." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/3559.
Full textAbstract:
Mestrado em Engenharia dos Computadores e TelemáticaOs profissionais de emergência lidam no seu quotidiano com situações de perigo, agindo muitas vezes sob pressão, expondo-se a níveis de stress e fadiga por períodos extensos, causando um impacto negativo nas suas vidas e saúde. Neste contexto, a utilização de novas soluções a partir de tecnologias vestíveis, redes de sensores e dispositivos móveis cria a oportunidade de oferecer um acompanhamento mais próximo, com o objectivo de detectar situações de perigo e dar suporte a equipas de profissionais de emergência médica em campo. No entanto, existem muito poucas soluções voltadas para a utilização sinérgica destas tecnologias emergentes que dêem suporte integrado a monitorização de uma equipa. Nesta dissertação propomos uma arquitectura conceptual de software (TeamMonitor) para agregação, análise e disseminação de informação direccionada para a monitorização de equipas na acção. Team Monitor e sustentada na noção de nós de coordenação centrais, que são responsáveis pela recolha de dados de diferentes fontes (ex.: vários profissionais de emergência) e subsequente fluxos de trabalho para análise, incluindo processamento básico de dados (ex.: execução de detectores de alarmes de sinal biológico) e troca eficiente de dados com clientes externos. O nó central dissocia a rede de tecnologias de informação da rede de fornecimento de dados. O suporte é dado pela camada de aquisição de sinal biológico e de análise que nós desenvolvemos, o módulo BIOSal. De modo a ilustrar a viabilidade do TeamMonitor, nós implementámos um sistema como prova do conceito, o Droid Jacket, onde o nó central da TeamMonitor e instanciado num dispositivo móvel com Android. Droid Jacket permite monitorizar até quatro Vital Jacket (uma tecnologia vestível para a monitorização de uma pessoa), fornecendo tanto o suporte para a troca e ficiente dos sinais agregados para clientes externos, como a detec ção precoce de potenciais alarmes a partir do processamento em tempo real dos dados adquiridos. Ao contr ario de outras abordagens comuns, nós consideramos as capacidades de processamento do dispositivo móvel para estação base. Nós implementámos um algoritmo simples de detecção do complexo QRS da onda cardíaca e de arritmias no Droid Jacket, a partir do electrocardiograma adquirido pelas unidades com o Vital Jacket vestido. Droid Jacket demonstra que a incorporação de dispositivos móveis num cenáario de monitorização de uma equipa é uma opção razoável, e o conceito pode ser estendido e adaptado a cenários mais realistas como a monitorização de bombeiros.
First responders deal in their daily lives with danger, working under pressure, exposing themselves to stress and fatigue for extended periods, which has a negative impact on their lives and health. In this context, using new solutions based on wearable technologies, sensor networks and mobile devices raises the opportunity to provide closer monitoring, aiming at detecting hazard conditions and supporting rst responder teams in the eld. However, very few solutions exist addressing such synergistic use of these emergent technologies to support integrated team monitoring. In this dissertation we propose a conceptual software architecture (TeamMonitor) for information aggregation, analysis and dissemination towards eld-action teams monitoring. TeamMonitor is supported in the notion of central coordination nodes that are responsible for data aggregation from multiple sources (e.g.: several rst responders professionals) and subsequent analysis work ows, including basic data processing (e.g.: running biosignal alarms detectors) and data stream relay to external clients. The central node decouples the IT network from the data providers network. This support is provided by a biosignal acquisition and analysis framework we developed, the BIOSal module. To illustrate TeamMonitor feasibility, we implemented a proof-ofconcept application, the DroidJacket, in which the TeamMonitor central node is instantiated in an Android mobile device. DroidJacket is able to monitor up to four VitalJacket R devices (a wearable garment for individual monitoring) providing both the support to relay the aggregated signals data to remote clients and an early detection of potential alarms based on real-time processing of the acquired data. Unlike other common approaches, we rely on the mobile device processing capabilities for the base-station. We implemented a basic algorithm for heart wave QRS complex and arrhythmia detection in DroidJacket, using the electrocardiogram acquired from the VitalJacket units. DroidJacket demonstrates that incorporating mobile devices in the team monitoring scenario is a reasonable option nowadays and the concept can be extended and adapted to more realistic scenarios like re ghter monitoring.
24
Azmi, Niloufar. "A Driver Fatigue Monitoring and Haptic Jacket-based Warning System." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22810.
Full textAbstract:
Driver fatigue is a major factor in most traffic accidents. This issue has increased the urgency for in-vehicle collision avoidance systems relying on proper driver fatigue detection and warning technologies. Computer vision approaches have been of much interest due to their non-invasive nature for detecting drowsiness. In addition, increased effort has been dedicated to the design of safety systems that warn drivers of various types of collisions. How these systems alert the sleepy drivers when integrated, however, is a crucial component to their effectiveness. A nonintrusive method is proposed in this thesis as a feasible solution to accurately detect fatigue levels and perfectly produce timely warnings. Fatigue progression over time is quantified to more accurate fatigue levels according to reliable PERCLOS measurements in a continuous LBP + SVM based eye state recognition process. Given the quantized fatigue levels, a novel haptic jacket-based alerting scheme is provided to safely convey varying criticality signals. Drivers would have the option to customize haptic jacket settings for the preferred type of feedback perception. This thesis reviews existing approaches, details the proposed system, and finally presents system performance evaluation and usability studies.
25
Lahrmann, Harry, Tanja Kidholm Osmann Madsen, Anne Vingaard Olesen, Jens Chr Overgaard Madsen, and Tove Hels. "The effect of a yellow bicycle jacket on cyclist accidents." Elsevier, 2017. https://publish.fid-move.qucosa.de/id/qucosa%3A72766.
Full textAbstract:
This study is the first randomised controlled trial (RCT) of the safety effect of high-visibility bicycle clothing. The hypothesis was that the number of cyclist accidents can be reduced by increasing the visibility of the cyclists. The study design was an RCT with 6793 volunteer cyclists – 3402 test cyclists (with a yellow jacket) and 3391 control cyclists (without the jacket). The safety effect of the jacket was analysed by comparing the number of self-reported accidents for the two groups. The accident rate (AR) (accidents per person month) for personal injury accidents (PIAs) for the test group was 47% lower than that of the control group. For accidents involving cyclists and motor vehicles, it was 55% lower. The study was non-blinded, and the number of reported single accidents was significantly lower in the test group than in the control group. This is likely a result of a response bias, since the bicycle jacket was not expected to affect the number of single accidents. To compensate for this bias, a separate analysis was carried out. This analysis reduced the effect of the jacket from 47% to 38%.
26
Cremades, Rodríguez Francisco José. "Traducció al castellà del Regiment de preservació a epidèmia o pestilència e mortaldats de Jacme d’Agramont." Doctoral thesis, Universidad de Alicante, 2009. http://hdl.handle.net/10045/13434.
Full text
27
Soemantri, Dilly Septiady. "Comparison of Numerically Predicted Response and Measured Response for Jacket Structures." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11617.
Full textAbstract:
Previous studies on Kvitebjørn jacket have shown that there are discrepancies between the response obtained from numerical simulations and field measurement record. For some cases, numerical simulations under predict the response of the structure when measured wave elevation is used as input. The reason for these discrepancies is so far still in question. In this study, the following efforts were done to asses other possibilities of discrepancy of the the response: Modification of wave height. Impact assessment due to breaking waves. Observation on NORSOK N-003 recommended hydrodynamic coefficients. The analyses include the following combinations of kinematics and surface properties: Airy kinematics combined with second order surface Wheeler stretching kinematics combined with second order surface Second order kinematics combined with linear surface The simulation is done by using the latest updated model developed by MARINTEK (Økland O. D., 2009). The simulation results have shown that the wave crest at platform location is under predicted approximately for 3m. One possible cause for this is the occurrence of pyramid-shaped wave. The impact assessments in this study are using the wave impact model proposed by Wienke & Oumeraci and by Campbell & Weynberg. Simulations then show that impact profile as proposed by Wienke and Oumeraci may not be suitable for assessing the response. By using this impact profile, the response of the structure is still under predicted. The quasi-static response resulted from this impact profile seems to have under predicted the real response at the estimated impact time. The dynamic response is under predicted too even though the behavior can be modeled pretty well. Impact model as proposed by Campbell and Weynberg was able to approximate the measured response better than the previous impact profile in this case. Total response and dynamic response can be represented pretty well and if the presence of caissons/riser between the legs of the platform is considered, the quasi-static response may be able to be approximated well too. For the case of slender drag dominated structure like Kvitebjørn, simulations show that a bigger drag coefficient than the one proposed by NORSOK N-003 should be used to approximate the impact load on the structure.
28
Righi, Bento Pereira Rafael. "Dynamic Analysis and Fatigue Assessment of a Jacket-type Offshore Platform." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Find full textAbstract:
This work aims to evaluate the environmental loads and make the fatigue analysis in a Jacket-type platform situated in the North sea.Under this line of thought. Then, a static and a dynamic fatigue analysis are evaluated and compared.
29
Dongsheng, Han, and rising_sun_han@hotmail com. "Robust Control for Offshore Steel Jacket Platforms under Wave-Induced Forces." Central Queensland University. School of Computing Sciences, 2008. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20080717.104813.
Full textAbstract:
This thesis is concerned with robust control of an offshore steel jacket platform
subject to nonlinear wave-induced forces. Since time delay and uncertainty are
inevitably encountered for an offshore structure and their existence may induce instability, oscillation and poor performance, it is very significant to study on how the
delay and uncertainty affect the offshore structure. In this thesis, a memory robust
control strategy is, for the first time, proposed to reduce the internal oscillations
of the offshore structure under wave-induced forces, so as to ensure the safety and
comfort of the offshore structure.
Firstly, when the system's states are adopted as feedback, memory state feedback
controllers are introduced for the offshore structure. By using Lyapunov-Krasovskii
stability theory, some delay-dependent stability criteria have been established, based
on which, and by combining with some linearization techniques, memory state feedback controllers are designed to control the offshore structure. The simulation results show that such controllers can effectively reduce the internal oscillations of the
offshore structure subject to nonlinear wave-induced forces and uncertainties. On
the other hand, a new Lyapunov-Krasovskii functional is introduced to derive a less
conservative delay-dependent stability criterion. When this criterion is applied to
the offshore structure, an improved memory state feedback controller with a small
gain is obtained to control the system more effectively, which is sufficiently shown
by the simulation.
Secondly, when the system's outputs are adopted as feedback, memory dynamic
output feedback controllers are considered for the offshore structure. By employing
a projection theorem and a cone complementary linearization approach, memory
dynamic output feedback controllers are derived by solving some nonlinear minimization problem subject to some linear matrix inequalities. The simulation results
show that the internal oscillations of the offshore structure subject to nonlinear
wave-induced forces are well attenuated.
Finally, robust H control is fully investigated for the offshore structure. By employing Lyapunov-Krasovskii stability theory, some delay-dependent bounded real
lemmas have been obtained, under which, via a memory state feedback controller or
a dynamic output feedback controller, the resulting closed-loop system is not only
asymptotically stable but also with a prescribed disturbance attenuation level. The
simulation results illustrate the validity of the proposed method.
30
Jones, Tara. "The ideological straight-jacket : challenging school-based definitions of 'suitable education'." Thesis, University of the West of Scotland, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.751388.
Full text
31
Xiao, Shan. "A wearable sensor jacket and enabling technologies for a telemedicine system." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50718.
Full textAbstract:
Telemedicine will alleviate the pressure on healthcare systems by reducing avoidable hospital visits and providing a service that can directly address the specific needs of patients, notably of the elderly and the disabled. Unlike the current healthcare services, which primarily focus on treatment of illness in a centralized manner, a telemedicine system has the promise of distributing the medical consultation, which can provide rapid and convenient healthcare particularly for under-served rural communities. This thesis develops enabling technologies for a convenient and wireless telemedicine system. The system uses a multi-sensor jacket, which a patient wears for acquiring the vital information that a medical professional would need to make accurate diagnosis of common illness. In the system that is developed in the present thesis, the sensor jacket will automatically inflate in a conformable manner when the patient wears it. The sensors are properly located to acquire the vital data. The acquired signals are wirelessly transmitted to a local computer for processing, and transmitting to the medical professional through a public communication network. A wireless telemedicine system relies more on the bandwidth of the communication network than a wired system does. Hence, size reduction of the data stream is important. This thesis proposes a new method to reduce the size of an ECG signal, for example, by determining the key attributes of the signal. The key attributes are transmitted instead of the entire ECG waveform. Then the proposed method regenerates a representative ECG waveform at the doctor’s end using the transmitted attributes. Illustrative examples show that the method is quite accurate and effective in medical diagnosis. For better mobility and easier access of the communication network, the patient end application primarily runs on a mobile device such as an iPhone. The patient end application provides live video and audio interaction between the doctor and the patient. During an active video session, the system streams vital data to the doctor in real-time. Besides receiving, storing and displaying the vital data of the patient, the doctor end can use the video conference feature to discuss the medical condition with other medical professionals.Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
32
Arafsha, Faisal. "Smart Clothes as a Tangible User Interface to Affect Human Emotions using Haptic Actuators." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20616.
Full textAbstract:
Affective haptic research is a rapidly growing field. Today, more smart haptic clothes are being studied and implemented which are aimed to effect its users emotionally. However, they have some limitations. This research intends to improve the existing literature and contribute by involving consumers directly in the design of a smart haptic jacket by adding heat, vibration actuators, and by enhancing portability. In this thesis, we are interested in six basic emotions: love, joy, surprise, anger, sadness, and fear. An online survey was designed and conducted on 92 respondents that gave feedback of what it is expected from an affective haptic jacket. The results of this survey assisted in the general design, and the feedback helped to build a prototype. 86% of the respondents expressed interest in the system and are willing to try it when it is ready. A detailed design architecture is provided along with details on the hardware and software used for the implementation. Finally, the prototype was evaluated on 14 participants using the actual prototype haptic jacket based on a QoE comparison between the absence and the presence of haptic actuation. The proposed system showed improvement over a similar system that is designed for the same purpose.
33
Masiulevičiūtė, Lina. "Gimnazistų švarko konstrukciniai ir technologiniai sprendimai." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100903_123726-45879.
Full textAbstract:
Bakalauro darbe projektuojamas uniforminis švarkas. Darbe grindžiami ir analizuojami gaminio konstrukciniai ir technologiniai sprendimai projektavimo etapuose. Svarbiu aspektu tampa gimnazistų švarko mados krypties analizė tam, kad būtų sukurtas gaminio techninis eskizas ir parinktos medžiagos. Gaminio konstrukcija sudaroma lenkų autoriaus Zbigniew Parafianowicz vyriško švarko konstravimo metodika. Švarko konstrukcija sumodeliuojama siekiant funkcionalumo, komforto dėvint ir patogumo prižiūrint. Iš konstrukcinio brėžinio sudaromi lekalai, taip pat gaminys projektuojamas COMTENS programos aplinkoje. Sudaromas pagrindo medžiagos detalių dauginimas dydžiais. Sudaromos išklotinės vieno ir dviejų detalių komplektų, įvertinat jų medžiagos sunaudojimo normą. Gaminio technologiniam procesui parinkti pagrįsti įrengimai. Sudaryta gaminio operacinė technologija, grafiškai pavaizduojant technologines schemas. Aprašomi gaminio kokybės reikalavimai. Nustatomas siuvimo srauto taktas, galia. Analizuojama sudaryta darbo padala. Suplanuojami siuvimo srauto įrengimai. Darbo brėžiniuose pateikiami grafiniai brėžiniai.In the bachelor’s paper students’ jacket is designed. The paper bases and analyses constructional and technological solutions in the article design stages. In order to create technical sketch and to select materials, students’ jacket vogue analysis becomes an important aspect. Jacket construction is made using Polish author’s Zbigniew Parafianowicz men’s jacket designing method. Jacket construction is modelled seeking for functionality, wearing comfort and easy care. Using a construction drawing, templets are made, also the article is designed under COMTENS software environment. Basic material part multiplication is made by sizes. Layouts for single and two-part sets are made, taking into attention their material consumption rate. Suitable equipment is selected for the technology process. Operation technology for the article is made, by graphic representation of technology schemes. Quality requirements are described. Sewing flow stroke and power are set. Formed work step is analysed. Equipment for sewing flow is planned. Graphical drawings are includes as annexes.
34
Chan, Fai. "Termination criteria for and behaviour of jacked piles in completely decomposed granite /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20CHANF.
Full text
35
Stanley, Ian. "Improved methods for reliability-based structural integrity assessment of steel jacket structures." Thesis, University of Aberdeen, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420134.
Full textAbstract:
The main aim of this thesis is to develop a probabilistic methodology, based on structural reliability theory, which allows information gained during manufacture, fabrication, construction and service life of a particular structural system to be systematically combined with data available at the design stage in order to improve reliability predictions about the structure's performance during its remaining service life. Broadly speaking, the objectives of the thesis can be summarised as follows: • To develop generic strategies and methods for reliability-based structural integrity assessments focussing on specific structures or plant • To further develop reliability-updating procedures so as to sharpen predictions of remaining life • To determine the value of obtaining additional in-service data in terms of improved SI calculations and reduction of model uncertainty. To achieve these objectives, consideration is restricted to two factors affecting the SI of offshore steel jacket structures, namely fatigue crack growth and system reliability performance under the influence of environmental loading.
36
Marrin, Nakra Teresa (Teresa Anne) 1970. "Inside the conductor's jacket : analysis, interpretation and musical synthesis of expressive gesture." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9165.
Full textAbstract:
Thesis (Ph.D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2000.Includes bibliographical references (leaves 154-167).
We present the design and implementation of the Conductor's Jacket, a unique wearable device that measures physiological and gestural signals, together with the Gesture Construction, a musical software system that interprets these signals and applies them expressively in a musical context. Sixteen sensors have been incorporated into the Conductor's Jacket in such a way as to not encumber or interfere with the gestures of a working orchestra conductor. The Conductor's Jacket system gathers up to sixteen data channels reliably at rates of 3 kHz per channel, and also provides mcal-time graphical feedback. Unlike many gesture-sensing systems it not only gathers positional and accelerational data but also senses muscle tension from several locations on each arm. The Conductor's Jacket was used to gather conducting data from six subjects, three professional conductors and three students, during twelve hours of rehearsals and performances. Analyses of the data yielded thirty-five significant features that seem to reflect intuitive and natural gestural tendencies, including context-based hand switching, anticipatory 'flatlining' effects, and correlations between respiration and phrasing. The results indicate that muscle tension and respiration signals reflect several significant and expressive characteristics of a conductor's gestures. From these results we present nine hypotheses about human musical expression, including ideas about efficiency, intentionality, polyphony, signal-to-noise ratios, and musical flow state. Finally, this thesis describes the Gesture Construction, a musical software system that analyzes and performs music in real-time based on the performer's gestures and breathing signals. A bank of software filters extracts several of the features that were found in the conductor study, including beat intensities and the alternation between arms. These features are then used to generate real-time expressive effects by shaping the beats, tempos, articulations, dynamics, and note lengths in a musical score.
by Teresa Marrin Nakra.
Ph.D.
37
Deeks, Andrew David. "An investigation into the strength and stiffness of jacked piles in sand." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612501.
Full text
38
Fernandopulle, Anthony. "A critical study of the Sinhala works of Jacome Gonsalves (1676-1742)." Thesis, SOAS, University of London, 1999. http://eprints.soas.ac.uk/28641/.
Full text
39
Steenkamp, Zaldeus Johannes. "Evaluation of film, jacket and internal cooling during fermentation of grape juice." Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/8481.
Full textAbstract:
Includes bibliographical references.The work described in this thesis deals with analytical and experimental aspects of water-film cooling, jacket cooling and internal cooling, which are the three predominant types of fermentation cooling found in the South African wine industry. During the past decades questions were constantly raised concerning the thermal efficiency of equipment used in the above mentioned types of fermentation cooling. These questions were particularly asked when a wine cellar expanded operations, or after product damage had occurred. The thesis presents the work that was carried out along the following aspects: 1. The building of models which will enable simulation of each type of fermentation cooling under different running conditions for various sizes of available equipment. 2. The experimental work on all three main types of fermentation cooling under different running conditions to confirm the validity of the mathematical models. 3. The comparison of analytical or predicted results of the performance (cooling capacity, pressure drop and effectiveness of the three types of fermentation cooling) with the experimental or measured values.
40
Wudarczyk, Jakob Jacek [Verfasser]. "Dipolare Moleküle für die Organische Elektronik / Jakob Jacek Wudarczyk." Mainz : Universitätsbibliothek Mainz, 2017. http://d-nb.info/1139913662/34.
Full text
41
Lagoni, Jacek [Verfasser]. "Parteienfinanzierung in Polen : Zwischen Selbstversorgung und Vollalimentierung / Jacek Lagoni." Baden-Baden : Nomos Verlagsgesellschaft mbH & Co. KG, 2019. http://d-nb.info/1183474504/34.
Full text
42
Mahajan, Sandeep Prakash. "Viscous Effects on Penetrating Shafts in Clay." Diss., Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1689%5F1%5Fm.pdf&type=application/pdf.
Full text
43
Radulovic, Luka. "Influence of advanced load simulation models on fatigue design of jackets for offshore wind turbines." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6369/.
Full textAbstract:
Constant developments in the field of offshore wind energy have increased the range of water depths at which wind farms are planned to be installed. Therefore, in addition to monopile support structures suitable in shallow waters (up to 30 m), different types of support structures, able to withstand severe sea conditions at the greater water depths, have been developed. For water depths above 30 m, the jacket is one of the preferred support types. Jacket represents a lightweight support structure, which, in combination with complex nature of environmental loads, is prone to highly dynamic behavior. As a consequence, high stresses with great variability in time can be observed in all structural members. The highest concentration of stresses occurs in joints due to their nature (structural discontinuities) and due to the existence of notches along the welds present in the joints. This makes them the weakest elements of the jacket in terms of fatigue.
In the numerical modeling of jackets for offshore wind turbines, a reduction of local stresses at the chord-brace joints, and consequently an optimization of the model, can be achieved by implementing joint flexibility in the chord-brace joints. Therefore, in this work, the influence of joint flexibility on the fatigue damage in chord-brace joints of a numerical jacket model, subjected to advanced load simulations, is studied.
44
Bechtel, Anne Christine [Verfasser]. "Fatigue behaviour of axially loaded grouted connections in jacket structures / Anne Christine Bechtel." Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1126744212/34.
Full text
45
Ravipati, Venkata Raja Sekhar Reddy. "Design and modelling of boat landing for jacket platforms in the Adriatic sea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Find full textAbstract:
Boat landings on fixed offshore platforms are designed to absorb the impact energy from the boats approaching the platform for crew transfer. As the size and speed of operating boats vary, the design and maintenance of the boat landings become more challenging. Different oil and gas operators adopt different design criteria for the boat landing design. The objective of this study is to develop structural calculations and safety checks regarding a boat landing structure installed on an Offshore Platform in Canale di Sicilia. The useful international codes are ISO 19902 and to carry out the structural modeling by means of GT STRUDL program, which is widely used in Europe. Calculate the defined loads such as dead loads, live loads, wave loads and Impact loads. The design calculations and checks done as per the international codes.
46
Lorente, i. González Carles. "Physiological Effects ot the cool vest jacket as a recovery method in soccer." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/666926.
Full textAbstract:
Aquesta tesi doctoral es basa en l'aplicació de la jaqueta refrigerant durant 15 minuts després de dos diferents protocols de fatiga, un en normotèrmia (22 ºC) i l'altre en condicions de calor (33ºC) per comprovar quines són les respostes fisiològiques i de rendiment neuromuscular i cinemàtic.
S'han estudiat habilitats pròpies del futbol, que s'ha demostrat que es veuen reduïdes a causa de l'aparició de fatiga, com són els esprints, salts i xuts. També s'ha analitzat la prevenció de lesions cinemàticament, avaluant la sol·licitació lligamentosa durant la caiguda d'un salt i les propietats de contracció del bíceps femoral amb tensiomiografia. A més, es va investigar la recuperació fisiològica en condicions de calor, l'efecte en la freqüència cardíaca de recuperació i la concentració de lactat en sang.
En els diferents estudis es demostra com la jaqueta refrigerant ajuda a reduir la temperatura de la pell després dels dos protocols de fatiga i no provoca cap reducció de rendiment després de la seva aplicació. Així doncs, l'esportista és capaç de començar la següent sèrie d'activitat física amb uns valors neuromusculars i fisiològics semblants als de l'inici de l'activitat, comparat amb els participants que no van dur la jaqueta refrigerant durant el període de descans, que mostren reduccions en algunes de les habilitats valorades.Esta tesis doctoral se basa en la aplicación de la chaqueta refrigerante durante 15 minutos después de dos diferentes protocolos de fatiga, uno en normotermia (22 ºC) y el otro en condiciones de calor (33 °C) para comprobar cuáles son las respuestas fisiológicas y de rendimiento neuromuscular y cinemático. Se han estudiado habilidades propias del fútbol, que se ha demostrado que se ven reducidas a causa de la aparición de fatiga, como son los esprints, saltos y chuts. También se ha analizado la prevención de lesiones a nivel cinemático, evaluando la solicitación ligamentosa durante la caída de un salto y las propiedades de contracción del bíceps femoral con tensiomiografia. Además, se investigó la recuperación fisiológica en condiciones de calor, el efecto en la frecuencia cardíaca de recuperación y la concentración de lactato en sangre. En los diferentes estudios se demuestra como la chaqueta refrigerante ayuda a reducir la temperatura de la piel después de los dos protocolos de fatiga y no provoca ninguna reducción de rendimiento después de su aplicación. Así pues, el deportista es capaz de empezar la siguiente serie de actividad física con unos valores neuromusculares y fisiológicos semblantes a los del inicio de la actividad, comparado con los participantes que no llevaron la chaqueta refrigerante durante el periodo de descanso, que muestran reducciones en algunas de las habilidades valoradas.
This doctoral thesis it is base on the application of the cool vest jacket during 15 minutes after two different fatigue protocols, one under normothermia (22 ºC) and the other other under hyperthermic conditions (33ºC) to assess which are the physiological responses and also neuromuscular and cinematic performance. We have studied soccer specific abilities, with evidences of being reduced because of the fatigue appearance, such as sprints, jumps and kicks. Also it has been analyzed injury prevention under kinematic basis, assessing ligament loading during drop jumps and the properties of contraction of the biceps femoral with tensiomiography. Besides, we researched the physiological recovery under hyperthermic conditions, the effect during heart rate recovery and blood lactate concentracion. During the different researchers we demonstrate how the cool vest jacket improves skin temperature reduction after two different fatigue protocols and does not provoke any reduction of performance after his application. Therefore, the athlete is able to commence the following series of physical activity with some neuromuscular and physiological values to the beginning of the activity, compared with the participants that did not use the cool vest jacket during the rest period, showing reductions at some of the abilities valued.
47
Lam, Joley, and 林早妮. "Termination criteria for high-capacity jacked and driven steel H-pilesin Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38346461.
Full text
48
Taylor, McComas. "The fall of the indigo jackal : the discourse of division and Pūrṇabhadra's Pañcatantra /." Albany : State University of New York Press, 2007. http://catalogue.bnf.fr/ark:/12148/cb41322571x.
Full text
49
Devaney, Louise Claire. "Breaking wave loads and stress analysis of jacket structures supporting offshore wind turbines." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/breaking-wave-loads-and-stress-analysis-of-jacket-structures-supporting-offshore-wind-turbines(acef8efd-eae2-4a52-9513-b2873e7a3a25).html.
Full textAbstract:
In terms of future power generation in UK and Germany, offshore wind is the next big player with 40GW and 32GW capacity planned for installation in both countries respectively by 2030. The latest Round 3 of sites owned by the Crown Estate explore deeper water depths of up to 78m in the Irish Sea. Foundations for offshore wind structures consume around 25% of the total project cost therefore the design of support structures is the subject of this thesis. The current state-of-the-art support structure options available for offshore wind turbines have been outlined in this thesis with an evaluation of the preliminary design of monopile and jacket solutions. This assessment resulted in further studies into the loading acting on a monopile foundation along with research into the fatigue design of multiplanar tubular joints for jacket structures. Mathematical modelling of linear and nonlinear waves combined with the Morison equation was completed to check the effects of breaking waves on a monopile foundation. Results indicated that measured forces were up to a factor of 2.5 times greater than calculated values, which suggests that loads could be under predicted if the effects of breaking are not considered. The theoretical maximum wave height before breaking was then linked to wind speed and a comparison of overturning moments from the two loads was made. Wave loads dominated at water depths of around 30m for lower wind speeds but this depth decreased to around 12m as wind speeds approached cut-out of 25m/s. For deeper water depths and larger capacity turbines, jackets are the preferred design solution. Joint design in FLS is the critical aspect of jacket design with castings often required to provide adequate capacity. A review of stress concentration factors (SCF) for tubular joints indicated that the coded approach, which uses SCF equations for uniplanar joints, could be missing the multiplanar effects. Finite element (FE) modelling of multiplanar tubular joints was completed using ANSYS Workbench to examine the effects of loading in out-of plane braces. Carry-over of stress from the loaded brace of the joint to unloaded neighbouring braces was observed which implies the importance of modelling joints as multiplanar geometries. A parameter study in ANSYS Workbench covering 1806 different geometrical configurations and loads was carried out with a regression of the data to give new sets of SCF equations for multiplanar tubular joints. SCFs from these equations were improved compared to Efthymiou but difficulties were encountered when superimposing the output (including Efthymiou). Further work on the superposition of individual load cases was therefore recommended for future work.
50
Zager, Eric Louis. "The impact of TeV nucleus-nucleus simulations on JACEE results /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/9757.
Full text