To see the other types of publications on this topic, follow the link: Existing Production Systems.
Journal articles on the topic 'Existing Production Systems'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Existing Production Systems.'
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 journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Schlechtendahl, Jan, Matthias Keinert, Felix Kretschmer, Armin Lechler, and Alexander Verl. "Making existing production systems Industry 4.0-ready." Production Engineering 9, no. 1 (2014): 143–48. http://dx.doi.org/10.1007/s11740-014-0586-3.
Full text
2
Vannusov, Denis, Vladimir Dadonov, and Maria Tereshchenko. "Organizational features of innovative CAD implementation in existing production systems." MATEC Web of Conferences 311 (2020): 02009. http://dx.doi.org/10.1051/matecconf/202031102009.
Full textAbstract:
In the article reviewed automatic systems and their life cycle. Analyzed phases of the CAD implementation into civil engineering companies with regard to the factors that suppress their integration. Detailed processes of human-computer interaction during the implementation of innovative CAD technologies. Analyzed the results of this interaction.
3
Marcollo, Hayden, and Christopher Carra. "Floating early production systems." APPEA Journal 51, no. 2 (2011): 671. http://dx.doi.org/10.1071/aj10051.
Full textAbstract:
Floating early production systems (FEPS) are becoming more important to the successful exploitation of Australia's deep water oil and gas. Importantly, FEPS help oil and gas operators reduce deep water full field development risk, as uncertainty in the reservoir characteristics are reduced by obtaining dynamic data (that is, partially producing some of the reservoir). This paper will present a review of existing FEPS that are now in use or have previously been in use worldwide and will discuss where they are headed in the future. The paper focuses on: The selection of the floating and subsea-vessel, mooring, riser, mechanical connection, etcetera; Technology presently available; and, Addressing the requirements in situations where new floating and subsea technology is needed. The qualification limits of existing technology will be discussed in the context of what systems are ready and off-the-shelf for operators to make use of now. The choice of appropriate FEPS will be discussed as a function of: proximity to pipeline infrastructure, potential production rate, capability to re-inject associated gas, prevailing variation in year-round environmental conditions, waterdepth, and, geotechnical description of sea bottom. A high level conceptual case study showing typical costs for the implementation of a deep water FEPS will be presented as a way of understanding the potential upside and downside exposure for an operator considering undertaking a deep water FEPS program.
4
Ozores-Hampton, Monica, and Deron R. A. Peach. "Biosolids in Vegetable Production Systems." HortTechnology 12, no. 3 (2002): 336–40. http://dx.doi.org/10.21273/horttech.12.3.336.
Full textAbstract:
Land application and landfilling are the most common destination for biosolids in the United States. When properly treated and managed in accordance with the existing state and federal regulations and standards, biosolids are safe for the environment and human health. Application of biosolids in vegetable production as an organic amendment to soils can increase plant growth and produce comparable crop yields with less inorganic nutrients than a standard program of commercial synthetic fertilizers. No application rate of treated biosolids alone will produce crop yields equivalent to commercial fertilizers. Biosolids may be used in conjunction with fertilizer thus lessening the application rate required. The major obstacles to public acceptance are issues concerning water pollution, risk of human disease, and odors. Additionally, heavy metals are an issue of bias with public perception. To ensure safe use of biosolids to a vegetable production systems the agronomic rate (nutrient requirement of the vegetable crop grown) should be calculated before application for the specific crop.
5
Smith, David R. "Cattle Production Systems: Ecology of Existing and EmergingEscherichia coliTypes Related to Foodborne Illness." Annual Review of Animal Biosciences 2, no. 1 (2014): 445–68. http://dx.doi.org/10.1146/annurev-animal-022513-114122.
Full text
6
Javorova, Angela. "CA Systems and Modularity Principles as Tools for Flexible and Efficient Production Systems Design." Applied Mechanics and Materials 474 (January 2014): 61–66. http://dx.doi.org/10.4028/www.scientific.net/amm.474.61.
Full textAbstract:
The article discusses the CA systems use and the application of the modularity principles in the design new, or modernizing existing production systems. This paper describes the principle of modularity as a tool for streamlining design. Design of system with the help of computers and assisted by programs. These allow creating 3D model design before the actual implementation. It is also possible to compile a control circuit simulation and detect and eliminate deficiencies still in design stage. In paper conclusion is illustrated design, automation of existing painting line for the varnish handles. Described principles have been applied, as well as CA systems, CATIA and FluidSim.
7
Costa Freitas, Maria de Belém, Maria Raquel Ventura-Lucas, Lola Izquierdo, and Claus Deblitz. "Competitiveness of Portuguese Montado Ewe Production Systems among the European Ewe Production Systems." Agriculture 10, no. 5 (2020): 184. http://dx.doi.org/10.3390/agriculture10050184.
Full textAbstract:
The number of ewes in Portugal registers a decrease since 1998. This decrease is felt particularly in the south of the country, which concentrates almost half of the existing ewes, mainly for meat production. One of the most important ewe production systems is the Montado, a High Nature Value ecosystem, occupying ca. 1.2 million ha in Portugal. The competitiveness of this system among the European ewe production systems is an important issue for the future of the Montado ecosystem. So, the objective of this paper is to analyze the ewe production systems in the Montado, using the agri benchmark database, and compare these systems with other European countries’ systems, ranking their competitiveness and efficiency among other systems in the European Union. We concluded that this methodology facilitated an in-depth understanding not only of the competitiveness and efficiency of ewe production systems in Portugal but also of their positioning regarding other systems in the European Union. The pattern of returns assures that these farms are competitive in the sense that they depend on the market on their decisions, and thus it is important that market values sheep products. Nevertheless, the diversification to other income sources would be a good option for the future sustainability of these farms and the opportunities and risks that these systems will deal with in a new green economy, with probable new functions and new opportunities for land, will be a challenge for the future.
8
Maxwell, T. J., Mary D. Lloyd, and I. A. Dickson. "Upland sheep production systems." BSAP Occasional Publication 10 (1985): 95–105. http://dx.doi.org/10.1017/s0263967x00030780.
Full textAbstract:
AbstractUpland sheep production systems based on the utilisation of enclosed sown pastures are considered in relation to environmental constraints, recent trends in marketing requirements and a continuing need to improve economic efficiency. The need for quantitatively described decision making in relation to both the testing, development and application of new technology is discussed with particular reference to those factors influencing herbage growth, utilisation and management.Relatively few upland farms are capable of producing marketable fat lambs before the decline in returns per kg lamb in June. Although higher returns for heavier fat or store lambs can be obtained in the autumn, the degree to which this maximizes the returns per ha will be dependent upon the stocking rate and ewe and lamb performance during the summer. It will also be dependent on the extent to which there is competition for pasture in the autumn and its effect on ewe live weight and condition during the pre-mating and post-mating period; weight and condition will affect reproductive performance which has a substantial effect on returns per ha.The significance of sward height as a means of controlling the performance of sheep grazing sown pastures is reviewed in relation to ongoing and completed systems experiments and development projects. It is concluded that, for practical purposes, a sward height held between 3.5 and 5.5 cm will provide a sound basis for management of the lactating ewe and suckling lamb until weaning. The means of achieving sward height control in varying farming situations and the development of commercially viable management systems is considered.In the development of systems towards improving production efficiency, a better description of responses to both level and pattern of N used is required. The need for a better understanding of responses of the ewe in terms of ovulation rate and embryo wastage to changing sward characteristics in the autumn and to the use of supplementary feeding is also required. New techniques, such as the endocrine manipulation of reproductive performance, need to be assessed in relation to existing practices and performance.
9
Fang, Yang, Gerardo H. Nunez, Mariana Neves da Silva, Douglas A. Phillips, and Patricio R. Munoz. "A Review for Southern Highbush Blueberry Alternative Production Systems." Agronomy 10, no. 10 (2020): 1531. http://dx.doi.org/10.3390/agronomy10101531.
Full textAbstract:
Southern highbush blueberry cultivation has expanded into non-traditional growing areas worldwide due to elite cultivars and improved horticultural practices. This article presents a comprehensive review of current production systems—alternatives to traditional open field production—such as production in protected environments, high-density plantings, evergreen production, and container-based production. We discuss the advantages and disadvantages of each system and compare their differences to open field production. In addition, we provide potential solutions for some of the disadvantages. We also highlight some of the gaps existing between academic studies and production in industry, providing a guide for future academic research. All these alternative systems have shown the potential to produce high yields with high-quality berries. Alternative systems, compared to field production, require higher establishment investments and thus create an entry barrier for new producers. Nevertheless, with their advantages, alternative productions have the potential to be profitable.
10
Et al., Mohamed Shamandy Fouad. "Comparative study for connecting new flare capacity to existing flare Systems." Psychology and Education Journal 58, no. 1 (2021): 5795–808. http://dx.doi.org/10.17762/pae.v58i1.1988.
Full textAbstract:
Process facility operations are equipped with flare system to dispose flammable, toxic, or corrosive vapors to an environmentally acceptable gas for release to the atmosphere from both normal operational venting and relief during abnormal conditions. For safe incineration and radiation considerations flares are located at a remote point from the plant. Flare system when designed is to be limited for a certain capacity for a relieved gas; in addition, it may be designed in excess for future process facilities which may be further added to an existing one.
 KHALDA Petroleum Company is an owner company of oil and gas plants in Egypt. The company started a remote facility in 2005 named as "QASR start of line" which equipped with a limited flaring system capacity of 416,800 kg/hr for each flare related to phases PH-1 and PH-2. After 10 years of operation the wells depletion occurred which affected the production capacity and hence the company decided to maintain the productivity. A new compression project is designed to improve recovery as the reservoir production rate and pressure decline. The new compression project facilities vent and disposal need a flare system in case of the emergency. This paper discusses two different scenarios available for connecting the new compression project facilities vent and disposal system either to the existing flare systems or to another destination, which better, safer and more economic
11
Mustafa, Wael. "Optimization of Production Systems Using Genetic Algorithms." International Journal of Computational Intelligence and Applications 03, no. 03 (2003): 233–48. http://dx.doi.org/10.1142/s1469026803000987.
Full textAbstract:
This paper presents a Genetic Algorithm for Production Systems Optimization (GAPSO). The GAPSO finds an ordering of Condition Elements (CEs) in the rules of a Production System (PS) that results in a (near) optimal PS with respect to execution time. Finding such an ordering can be difficult since there is often a large number of ways to order CEs in the rules of a PS. Additionally, existing heuristics to order CEs in many cases conflict with each other. The GAPSO is applicable to PSs in general and no assumptions are made about the matching algorithm or the interpreter that executes the PS. The results of applying the GAPSO to some example PSs are presented. In all examples, the GAPSO found an optimal ordering of CEs in a small number of iterations.
12
Busch, Jan, Matthias Görke, and Dietmar Krämer. "An Approach to Analyse the Volume Flexibility of Production Systems." Advanced Materials Research 1018 (September 2014): 605–12. http://dx.doi.org/10.4028/www.scientific.net/amr.1018.605.
Full textAbstract:
Modern enterprises face the challenge of volatile markets. The multifarious influencing factors particularly include uncertain demand quantities. This means that it is increasingly important for production systems to be able to react quickly. At the same time, it is becoming more and more difficult to adequately depict this specific volume flexibility due to the complexity of the systems involved. Although existing research work has recognised flexibility as a decisive competitive factor for production systems, the focus until now has only been on qualitative investigations. Quantitative approaches are only found for specific problems. This paper presents a new approach to depict and analyse the volume flexibility of production systems in consideration of existing definitions and approaches. The resulting paths of investigation serve as approaches for future research projects for a quantitative analysis and optimisation of the volume flexibility of production systems.
13
Khayrullina, Marina Valentinovna, Olga Anatolyevna Kislitsyna, and Alexey Vladimirovich Chuvaev. "Production Systems Continuous Improvement Modelling." Quality Innovation Prosperity 19, no. 2 (2015): 73. http://dx.doi.org/10.12776/qip.v19i2.576.
Full textAbstract:
<div><strong>Purpose:</strong> This paper focuses on the authors’ contribution to modelling algorithms for key business processes, economic indicators and original mathematical model for improvement assessment.</div><div> </div><div><strong>Methodology/Approach:</strong> Researching and writing the article one uses interdisciplinary knowledge (technological production processes were considered in unity with economic principles of their construction and management), a combination of technical and technological approach, formal logic and mathematical economic modelling. For justifying the scope of model parameters, it is used field research (enterprises survey) and method of expert evaluation.</div><div> </div><div><strong>Findings:</strong> The research has showed the integration of theory of constraints, and lean manufacturing is possible and expedient. The observations of the model’s integral values and their dynamic patterns allow for important insights about positive or negative trends in production system development taken as a whole. The model enables to reveal the trends for particular items and draw the top teams’ attention to problem areas. They will be subject to further decomposing and improvement.</div><div> </div><div><strong>Research Limitation/implication:</strong> The model can be treated as cross-functional. But as every enterprise has its unique production environment, it can be exposed to further adjustment to individual enterprise specific conditions.</div><div> </div><div><strong>Originality/Value of paper:</strong> The indicators and mathematical model for improvement assessment proposed by authors develop and complement the existing system of knowledge about production management and can be used as a practical tool for control of the continuous improvement process in company.</div>
14
Stockmann, Christian, Herwig Winkler, and Martin Kunath. "Robustness assessment in production systems." Journal of Manufacturing Technology Management 32, no. 4 (2021): 932–51. http://dx.doi.org/10.1108/jmtm-06-2020-0223.
Full textAbstract:
PurposeThe concept of robustness in manufacturing is not easy to capture and even harder to quantify. This paper elaborates an approach to assess robustness in production systems from a holistic input-throughput-output perspective using a pragmatic robustness indicator.Design/methodology/approachFirst, in order to have a precise understanding of what needs to be measured, a concept of robustness in production systems is defined based on a literature overview. Three different aspects are considered to be essential to comprehensively describe robustness in production: the deviations of input resources, of performance and of output. These aspects are translated into an aggregated indicator based on developments of production costs, order delays and output volumes. The indicator-based assessment approach is eventually applied to a flow-shop scheduling case study in the chipboard industry.FindingsThe study shows that an assessment of robustness should not solely focus on a single aspect of a production system. Instead, a holistic view is required addressing the tradeoffs that robustness must balance, such as the one between the realized performance, the corresponding resource requirements and the resulting output. Furthermore, the study emphasizes that robustness can be interpreted as a superior system capability that builds upon flexibility, agility, resilience and resistance.Research limitations/implicationsFirst, the paper is a call to further test and validate the proposed approach in industry case studies. Second, the paper suggests a modified understanding of robustness in production systems in which not only the deviation of one single variable is of interest but also the behavior of the whole system.Practical implicationsThe approach allows practitioners to pragmatically evaluate a production system’s robustness level while quickly identifying drivers, barriers and tradeoffs.Originality/valueCompared to existing assessment approaches the proposed methodology is one of the first that evaluates robustness in production systems from a holistic input-throughput-output perspective highlighting the different tradeoffs that have to be balanced. It is based upon a comprehensive concept of robustness which also links robustness to adjacent capabilities that were otherwise only treated separately.
15
Ocakci, Elif, Jörg Niemann, Caius Luminosu, and Alin Artene. "Quality Cost and Economic Analysis. A Synthesis in the Manufacturing Systems." MATEC Web of Conferences 343 (2021): 05008. http://dx.doi.org/10.1051/matecconf/202134305008.
Full textAbstract:
The paper performs a literature review on existing models and methodologies to analyse and identify the cost of quality in manufacturing systems. The review shows that existing accounting models are insufficient to identify quality cost in detail in production processes. Existing models also do not cover the entire production activities and therefore need to be extended over the entire product life cycle. The authors therefore develop a new approach by refining and extending the method of activity-based costing to make it applicable for quality cost identification. The proposed methodology can serve as a building block for a later integration into superior supply chain management systems which allow to trigger continuous quality improvements of entire production networks.
16
de Araújo Mali Code, C., E. P. Supangco, S. S. Capitan, E. A. Aguilar, and J. T. Dizon. "Characteristics of the Existing Rainfed Rice-Bali Cattle Production Systems in Maliana, Bobonaro, Timor-Leste." IOP Conference Series: Earth and Environmental Science 372 (November 7, 2019): 012069. http://dx.doi.org/10.1088/1755-1315/372/1/012069.
Full text
17
Beck, Martin, and Tilo Sielaff. "Linked Energy Systems for Production Sites of the Future." Advanced Materials Research 769 (September 2013): 319–26. http://dx.doi.org/10.4028/www.scientific.net/amr.769.319.
Full textAbstract:
Industrial enterprises are increasingly driven to tap the potentials of energy efficiency in existing and future production sites. The challenge is to identify cost-efficient levers for a low energy demand in the linked energy system of production machines and peripheral devices. Considering enabling technologies for energy efficiency and energy recovery in a cascaded energy network with energy storages this paper presents an approach towards energy and cost-efficient system configurations for production sites. An outlook will be given on the research center eta-factory for energy efficient factories at the PTW, TU Darmstadt.
18
Luft, Angela, Andreas Gebhardt, and Nicolae Balc. "Challenges of additive manufacturing in production systems." MATEC Web of Conferences 299 (2019): 01003. http://dx.doi.org/10.1051/matecconf/201929901003.
Full textAbstract:
Additive Manufacturing (AM) has become indispensable in the context of digitalization and Industry 4.0 and is said to be a mega trend of the 21st century. The technology offers immense opportunities to revolutionize the production of parts and components in all industries. Despite of the outstanding technical possibilities, the industry-wide adaptation rate is low. The current approach of looking at AM from a mostly technological view is a major reason for this. The challenge is to efficiently integrate 3D printing and other additive processes into existing manufacturing processes and systems. AM must be perceived as a multidimensional topic and viewed from different perspectives, two of which are the AM technology and the planning and management of production systems. These two perspectives have to be addressed simultaneously and cross-linked. In order to use AM to tackle some of the most challenging problems in modern manufacturing systems like increasing variant diversity, shorter product lifecycles, the demand for digitized processes and cyber-physical systems, it is necessary to develop interdisciplinary approaches and solutions, because none of the disciplines can reach the necessary performance and cost-efficiency alone.
19
Lütjen, Michael, and Abderrahim Ait Alla. "Risk-Optimized Design of Production Systems by Use of GRAMOSA." Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/934176.
Full textAbstract:
Today production and logistic systems are getting more complex. This is a problem which the planning and design of such systems have to deal with. One main issue of production system development in series production is the planning of production processes and systems under uncertainty. New and existing production technologies are often not fully adoptable to new products. This is why some of the main characteristics, like, for example, cost, time, or quality, are not definable at the beginning. Only value ranges and probabilities can be estimated. However, the adaptation process is controllable, which means that the adaptation results are depending on the existing development budget and its resources. This paper presents an approach for the optimized allocation of development resources regarding the adaptation risks of production technologies and processes. The modeling concept GRAMOSA is used for integrated modeling and discrete event-based simulation of the aspired production system. To this end a domain-specific modeling language (DSML) is applied. The further risk-based analysis of the simulation results and the optimized allocation of the development budget are done by use of mathematical optimization.
20
Liebl, C., R. Popp, and M. F. Zäh. "Energieflexibilität von Produktionsanlagen*/Energy flexibility of production systems." wt Werkstattstechnik online 105, no. 03 (2015): 136–40. http://dx.doi.org/10.37544/1436-4980-2015-03-60.
Full textAbstract:
Der Ausbau erneuerbarer Energien in Deutschland konfrontiert die deutsche Industrie mit einem volatilen Energieangebot. Eine Möglichkeit hierauf zu reagieren ist, den Energiebedarf flexibel dem Angebot anzupassen und niedrige Strompreise zu nutzen. Ergänzend zu den bestehenden Bewertungsmethoden wird eine Vorgehensweise vorgestellt, die eine Beurteilung des Potentials an Energieflexibilität einzelner Anlagen erlaubt. Ziel ist es, anhand einer Voruntersuchung entscheiden zu können, ob diese Anlagen einer intensiven Bewertung unterzogen werden sollten. &nbsp; With the expanded use of renewable energy sources, German industry will be faced with a volatile energy supply. One way to react is to adapt energy demand to energy availability. In addition to existing evaluating methods, an approach to review the potential energy flexibility of production systems is presented. The objective is to be able to decide, if a detailed evaluation of the energy flexibility of a machine is useful.
21
Zemczak, Marcin, and Damian Krenczyk. "A New Procedure of Production Orders Sequencing in Mixed-Model Production Systems." Advanced Materials Research 1036 (October 2014): 864–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.864.
Full textAbstract:
The paper presents the task scheduling issue, which main aim is to establish a proper sequence of tasks, that would maximize the utilization of companys production capacity. According to the literature sources, the presented sequencing problem, denoted as CSP (Car Sequencing Problem) belongs to the NP-hard class, as has been proven by simple reduction from Hamiltonians Path problem. Optimal method of solution has not yet been found, only approximate solutions have been offered, especially from the range of evolutionary algorithms. Regardless of specific production system, while considering reception of new tasks into the system, current review of the state of the system is required in order to decide whether and when a new order can be accepted for execution. In this paper, the problem of task scheduling is limited to the specific existing mixed-model production system. The main goal is to determine the effective method of creation of task sequence. Through the use of computational algorithms, and automatic analysis of the resulting sequence, rates of production are able to be checked in a real time, and so improvements can be proposed and implemented.
22
Güldner, C., W. Hegemann, N. Peschen, and K. Sölter. "Use of lime for the upgrading of existing wastewater treatment systems." Water Science and Technology 29, no. 12 (1994): 279–82. http://dx.doi.org/10.2166/wst.1994.0626.
Full textAbstract:
The integration of the chemical precipitation unit which would inject a lime solution into a series of mechanical-biological processes, including nitrification/denitrification, and the sludge treatment are the subject of this project. The essential target is the large-scale reconstruction of a mechanical-biological sewage treatment plant with insufficient cleaning performance in the new German states and the adjustment of the precipitation stage to the unsteady inflow of sewage. First results indicate that the pre-treatment performance could be improved by ≅ 20% and the discharge of concentrations of COD, BOD, N and P could be reduced and homogenized. In addition, experiments on hydrolysis and acidifiability of the pre-treatment sludge have been carried out on a laboratory level with the object of making sources of carbon readily available for denitrification. In the course of the experiment, inhibition of fatty acid production by calcareous primary sludge could not be detected. The characteristics of the sludge, such as draining and thickening were considerably improved by the adding of lime.
23
Ahmad, K. "Molecular farming: strategies, expression systems and bio-safety considerations." Czech Journal of Genetics and Plant Breeding 50, No. 1 (2014): 1–10. http://dx.doi.org/10.17221/187/2013-cjgpb.
Full textAbstract:
Molecular farming is an experimental application of biotechnology that involves the genetic modification of crops for the production of proteins and chemicals for medicinal and commercial purposes. The vast majority in the developing world cannot afford the high cost of therapeutics produced by existing methods. We need to produce not only new therapeutics but also cheaper versions of the existing ones. Molecular farming could offer a viable option for this growing need for biopharmaceuticals. Plant made therapeutics are cheaper, safer, can be abundantly produced and easily stored. Here, strategies and approaches utilized in plant molecular farming are discussed. Furthermore, the bio-safety considerations related to this emerging field are also discussed.
24
Proto, Andrea R., Giuseppe Zimbalatti, Lorenzo Abenavoli, Bruno Bernardi, and Soraya Benalia. "Biomass Production in Agroforestry Systems: V.E.Ri.For Project." Advanced Engineering Forum 11 (June 2014): 58–63. http://dx.doi.org/10.4028/www.scientific.net/aef.11.58.
Full textAbstract:
The biomass for energy purposes, coming from agroforestry systems and timber industry, can provide various environmental and socio-economic benefits. Among all renewable energy sources, agroforestry biomass represents both an important alternative source to fossil fuels and an opportunity for the socio-economic development of various marginal areas in Italy. In particular, agroforestry is a collective name of land use systems in which woody perennials are grown in association with herbaceous plants and/or livestock in a spatial arrangements, a rotation, or both in which there are both ecological and economic interactions between the tree and the non-tree components of the system. Estimating availability of biomass resources is important to assess bioenergy production potential and so bioenergy contribution to annual energy demand. In the supply of biomass to energy use, the planning of operations is the basis for sustainable development of agroforest system. Most existing forest practice rules and recommendations did not anticipate this increased extraction of woody biomass and offer no specific guidance on how much removal is healthy for ecosystems. Intensification of biomass utilization, particularly for energy and fuel needs, presents a range of potential environmental risks. Therefore, the research focuses on development of guidelines for increasing a sustainable biomass supply chain at local scale, in order to facilitate energy planning that considers the local system carrying capacity and the potential of substitution of fossil fuels.
25
Müller, R., L. Hörauf, C. Speicher, and D. Burkhard. "Transparente Produktionsprozesse/Transparent production processes – Information gathering through retrofitting of existing machinery for the transparent control of production processes." wt Werkstattstechnik online 109, no. 04 (2019): 223–26. http://dx.doi.org/10.37544/1436-4980-2019-04-21.
Full textAbstract:
Die Produktion nach Kundenwunsch erhöht die Komplexität in der industriellen Produktion und deren Steuerung. Informationen aus verschiedenen Bereichen und Prozessen sind notwendig, um den Verantwortlichen eine Assistenz in der Produktion zu bieten. Der Beitrag beschreibt das Retrofitting von Materialwagen zum automatisierten Erfassen und Lokalisieren von Beständen in der Produktion von Weißer Ware zur Unterstützung der Steuerungsprozesse mittels Manufacturing Execution System (MES). &nbsp; Production according to customer requirements increases the complexity and control effort in industrial production. Information from different production areas and processes is necessary to assist those employees in production. The article describes the retrofitting of material shuttle for automated gathering and localization of material in the production of white goods to support the control processes in production via a Manufacturing Execution System (MES).
26
Falkinger, Josef, Elisa Huber, and Johannes Chalupa. "Tackling virtual production." Statistical Journal of the IAOS 37, no. 2 (2021): 655–62. http://dx.doi.org/10.3233/sji-200739.
Full textAbstract:
This paper is an attempt to contribute to the discussion on multinational enterprises shifting certain economic activities to special purpose entities abroad for reasons of tax optimisation. The authors argue that a transfer of production to a special purpose entity abroad permitted by tax law is not necessarily a transfer of production in an economic sense. Special purpose vehicles can be involved in production processes from a legal point of view without producing any goods or services in reality – a phenomenon the authors call ‘virtual production’. Thus, simply mirroring the legal transactions in national accounts may result in a distorted representation of economic reality. Unfortunately, the System of National Accounts in its current version as well as other existing guidelines lack clear guidance in order to distinguish virtual from real economic activity in the context of special purpose vehicles. This paper offers a proposal for improvement of existing definitions and concepts.
27
DONICHEV, O. A., S. A. GRACHEV, and M. L. BYKOVA. "DIGITAL PRODUCTION AND TECHNOLOGICAL DEVELOPMENT OF REGIONAL ECONOMIC SYSTEMS." EKONOMIKA I UPRAVLENIE: PROBLEMY, RESHENIYA 3, no. 11 (2020): 86–92. http://dx.doi.org/10.36871/ek.up.p.r.2020.11.03.015.
Full textAbstract:
The article is devoted to the analysis of aspects of industrial and technological development of regions in the conditions of digitalization. The purpose of the study is to try to determine the conditions and assess the economic growth of regions depending on the state of digitalization of the industrial and economic entities located in them. The research methodology is based on the use of statistical, comparative, and economic-mathematical analysis methods to establish the existing dependencies. A significant relationship has been established between the state of digitalization of the region and the growth rates of the gross regional product in them. The suggested approach can be applied by representatives of government authorities, scientists, and businesses to continue the analysis.
28
Perisic, P., Z. Skalicki, M. M. Petrovic, V. Bogdanovic, and D. Ruzic-Muslic. "Simmental cattle breed in different production systems." Biotehnologija u stocarstvu 25, no. 5-6-1 (2009): 315–26. http://dx.doi.org/10.2298/bah0906315p.
Full textAbstract:
The paper gives the analysis on the state in population of Simmental cattle reared in Europe with a special review on the state in Simmental cattle in our country which makes about 80 % total cattle fund in Serbia, and is characterized by a negative trend in the number of cattle, as well as by a low average milk production per cow. The most important results obtained by both domestic and foreign authors by means of various methods of improving Simmental breed and its raising in different systems have been shown. The directions for improving Simmental cattle according to the productive directions have been analyzed. Possible methods of improving the Simmental cattle in our country have been pointed out, which should be in accordance with already existing genetic potential of each actual population, its purpose (registered breeding stock, production breeding stock), as well as with the market needs for cow milk, milk products and meat (primarily beef meat, for export). A special emphasis has been given to the importance of organizing the production of meat in the cow-calf system in which Simmental breed, following the model of many European countries, should have good performance also in our country, if the same production should be organized in deserted hilly and mountainous regions. In this way we could contribute to more significant increase in overall beef production, and to reactivate unused natural resources as well.
29
Giacomelli, Gene A., and William J. Roberts. "Greenhouse Covering Systems." HortTechnology 3, no. 1 (1993): 50–58. http://dx.doi.org/10.21273/horttech.3.1.50.
Full textAbstract:
The diversity of coverings for the greenhouse and other plant production structures has increased dramatically during the past 4 decades. This has resulted from the availability of new types of covering materials and enhancements of previously existing materials, as well as the demands for technological improvements within the expanding controlled environment agricultural industry. The types of coverings currently available are dominated by plastics. These range from traditional glass to the recent advent of polymer plastics, such as thin films or multilayer rigid thermoset plastic panels. Available enhancements such as ultraviolet radiation (UV) degradation inhibitors, infrared radiation (IR) absorbency, and anti-condensation drip surfaces, as well as their physical and spectral properties are discussed. The selection of specific covering alternatives has implications for the greenhouse superstructure and its enclosed crop production system.
30
Skinner, Dominic J., and Jörn Dunkel. "Improved bounds on entropy production in living systems." Proceedings of the National Academy of Sciences 118, no. 18 (2021): e2024300118. http://dx.doi.org/10.1073/pnas.2024300118.
Full textAbstract:
Living systems maintain or increase local order by working against the second law of thermodynamics. Thermodynamic consistency is restored as they consume free energy, thereby increasing the net entropy of their environment. Recently introduced estimators for the entropy production rate have provided major insights into the efficiency of important cellular processes. In experiments, however, many degrees of freedom typically remain hidden to the observer, and, in these cases, existing methods are not optimal. Here, by reformulating the problem within an optimization framework, we are able to infer improved bounds on the rate of entropy production from partial measurements of biological systems. Our approach yields provably optimal estimates given certain measurable transition statistics. In contrast to prevailing methods, the improved estimator reveals nonzero entropy production rates even when nonequilibrium processes appear time symmetric and therefore may pretend to obey detailed balance. We demonstrate the broad applicability of this framework by providing improved bounds on the energy consumption rates in a diverse range of biological systems including bacterial flagella motors, growing microtubules, and calcium oscillations within human embryonic kidney cells.
31
Kurth, C. J., Brian L. Wise, and Stanton Smith. "Design considerations for implementing ceramics in new and existing polymeric UF systems." Water Practice and Technology 13, no. 4 (2018): 725–37. http://dx.doi.org/10.2166/wpt.2018.081.
Full textAbstract:
Abstract With the latest innovations in production and design, ceramic ultrafiltration (UF) membranes are approaching cost parity with polymeric UF membranes. However, system design and hydraulic/pneumatic cleaning methods (backwash) associated with ceramic UF can prevent the overall system costs from being competitive. An in-depth pilot study of various approaches to hydraulic cleaning and operation cycles was conducted to determine whether appropriate conditions could be found that allow for the design of more financially-attractive ceramic UF systems. The result is an overall system cost that is competitive with that of polymeric UF. Further, a match of operating conditions makes it feasible to retrofit polymeric UF modules with ceramic UF modules with few system modifications. This paper will present the pilot test results using different hydraulic cleaning designs and outline the economic impact on the system.
32
Sahdev, Sudhir, Sunil K. Khattar, and Kulvinder Singh Saini. "Production of active eukaryotic proteins through bacterial expression systems: a review of the existing biotechnology strategies." Molecular and Cellular Biochemistry 307, no. 1-2 (2007): 249–64. http://dx.doi.org/10.1007/s11010-007-9603-6.
Full text
33
Cecala, K. K., S. J. Price, and M. E. Dorcas. "Evaluating existing movement hypotheses in linear systems using larval stream salamanders." Canadian Journal of Zoology 87, no. 4 (2009): 292–98. http://dx.doi.org/10.1139/z09-013.
Full textAbstract:
Because of their linear nature, streams provide a restrictive framework to understand the movement ecology of many animals. Stream movements have been characterized under two competing hypotheses. The colonization hypothesis dictates that small individuals experience passive drift, but concurrent, upstream movement by larger individuals replaces the loss of small individuals. Alternatively, the production hypothesis suggests that downstream movements are a consequence of limited resource availability. Previous research suggests that large larvae should move upstream and vice versa for small larvae, which should therefore be found downstream more often. We conducted a mark–recapture study of larval red salamanders ( Pseudotriton ruber (Sonnini de Manoncourt and Latreille, 1801)) to assess the validity of these hypotheses. We found that no larvae exhibited downstream movement (skew = 0.361, p = 0.019; biased upstream), and large larvae were the only size cohort to exhibit directional movement upstream (skew = 0.901, p = 0.035). Contrary to predictions under the colonization hypothesis, small larvae were found upstream more frequently than large larvae (N = 871, H = 16.29, df = 2, p < 0.001). Our results suggest that larval movements are related to abiotic stream conditions, and we conclude that neither hypothesis fully explains stream movement. In the absence of drift, new movement hypotheses are necessary to describe persistent upstream movement in streams. These hypotheses should consider individual causes of movement and the direction of movements that will improve the fitness of the organism.
34
Robinson, Brian. "Expert systems in agriculture and long-term research." Canadian Journal of Plant Science 76, no. 4 (1996): 611–17. http://dx.doi.org/10.4141/cjps96-109.
Full textAbstract:
Expert systems (ES) technology has many existing and potential uses as input into the agricultural production process. ES are simply computer programs that attempt to emulate human expertise for problem solving purposes. This technology is well suited to agricultural problem solving because of its ability to encode existing knowledge within specific application areas and then apply this knowledge within the problem solving process. ES effectively leverage management's input into agricultural production systems by allowing for the assimilation of all available knowledge pertinent to the task at hand. There are many types of agricultural ES and these can generally be categorized into: Crop Management Advisors, Livestock Management Advisors, Planning Systems, Pest Management Sytems, Diagnostic Systems, Conser-vation/Engineering Systems, Process Control Systems and Marketing Advisory Systems. The cost of ES development can be high. Potential projects, therefore, should be subjected to a benefit/cost analysis to ensure that development efforts are well targeted. ES development and agricultural research are complementary processes and should become more coordinated within an integrated knowledge production and implementation cycle. Key words: Expert systems, knowledge, management, agriculture, research
35
Baumung, Wjatscheslav, and Vladislav V. Fomin. "Optimization Model to Extend Existing Production Planning and Control Systems for the Use of Additive Manufacturing Technologies in the Industrial Production." Procedia Manufacturing 24 (2018): 222–28. http://dx.doi.org/10.1016/j.promfg.2018.06.035.
Full text
36
Emmerich, Marcus, and Ulrike Hormel. "Unequal Inclusion: The Production of Social Differences in Education Systems." Social Inclusion 9, no. 3 (2021): 301–12. http://dx.doi.org/10.17645/si.v9i3.4322.
Full textAbstract:
The article raises the question of whether and how education systems produce social differences internally rather than reproducing pre‐existing “external” inequalities. Linking Niklas Luhmann’s theory of inclusion/exclusion with Charles Tilly’s theory of categorical inequalities, and based on empirical data from various qualitative studies, the article identifies an “observation regime” epistemically constituting the social classification of students and legitimising organisational closure mechanisms in the school system. As an alternative to the “reproduction paradigm,” a research approach guided by differentiation theory is proposed that takes into account that educational inequality operationally arises on the “inside” of the educational system and is caused by unequal inclusion processes.
37
Nguyen, Minh, Gabriella Duddy, and Camila Karam. "Analysis of Industrial Syngas Production from Biomass." PAM Review Energy Science & Technology 2 (August 31, 2015): 67–91. http://dx.doi.org/10.5130/pamr.v2i0.1396.
Full textAbstract:
This meta-study provides a comparison across various gasification systems on the production of syngas from biomass as feedstock. The gasifier configuration systems analysed included; fixed-bed, fluidized, plasma, and entrained, and the effect of operational parameters on the syngas volume and composition were obtained and analysed across a number of studies. The relationships between efficiency, temperatures within the system, equivalence ratio, fuel quality, and biomass fuel types were investigated and it was shown that ER was the most influential operating parameter. A small generalised comparison between existing competing energy sources was also performed with respect to biofuels.
38
Schlie, Alexander, Safa Bougouffa, Juliane Fischer, Ina Schaefer, and Birgit Vogel-Heuser. "Change analysis on evolving PLC software in automated production systems." at - Automatisierungstechnik 66, no. 10 (2018): 806–18. http://dx.doi.org/10.1515/auto-2018-0037.
Full textAbstract:
Abstract Control software for automated Production Systems (aPSs) becomes increasingly complex. Respective systems undergo constant evolution. Yet, proper documentation may not always be present, entailing maintenance issues in the long run. While manual examination of software for aPSs is an error-prone task, static analysis can improve system quality. However, it has not been applied to describe software evolution by means of changed systems artifacts. The authors address this issue and perform change analyses on IEC61131-3 projects, identifying introduced and removed systems artifacts as well as existing ones affected. By that, the authors aim to support sustainable evolution. Two feasibility studies, implemented independently, but for the same evolution scenarios for an automation plant, are used for evaluation. The technique is shown to be efficient and highly precise.
39
Bruch, Jessica, and Monica Bellgran. "Integrated portfolio planning of products and production systems." Journal of Manufacturing Technology Management 25, no. 2 (2014): 155–74. http://dx.doi.org/10.1108/jmtm-09-2013-0126.
Full textAbstract:
Purpose – The purpose of the research presented is to analyse and discuss critical challenges related to the development of a production system portfolio. Design/methodology/approach – The study employs a longitudinal case study of an industrialization project at a global supplier in the automotive industry. Findings – This research makes two clear theoretical contributions. First, it extends the existing research on the manufacturing and R&D interface by proposing an innovative structure for production system development facilitating manufacturing companies in their efforts of being fast and cost-effective when introducing new products to the market. Second, this research identifies challenges related to the adoption of a production system portfolio and the necessary actions of a manufacturing company applying such a portfolio strategy. Research limitations/implications – The findings should be seen as a first attempt at assisting the development of a production system portfolio that matches the product portfolio. However, since the findings are based on only one case, the findings are to some extent context-specific and thus need to be complemented by more research. Practical implications – The research unveils challenges related to production system development and provides managers with a better understanding of some of the implications of the adoption of a portfolio strategy. Originality/value – This empirical study is among the first to explore the implications of a production system portfolio strategy. It advances the understanding towards a fully integrated product and production system development.
40
Perry, David, and Benny Levikson. "Continuous production/inventory model with analogy to certain queueing and dam models." Advances in Applied Probability 21, no. 01 (1989): 123–41. http://dx.doi.org/10.1017/s0001867800017225.
Full textAbstract:
We consider two storage/production systems in which items are produced continuously over time with fixed rate. In the first system items have infinite lifetime, while in the second system the lifetime of the items are finite and fixed. The inventory level distributions and other important functionals associated with these storage systems are derived. This derivation is accomplished by an analogy existing between the storage systems and certain queueing systems and a finite dam model. Optimization problems connected with these systems are also considered.
41
Perry, David, and Benny Levikson. "Continuous production/inventory model with analogy to certain queueing and dam models." Advances in Applied Probability 21, no. 1 (1989): 123–41. http://dx.doi.org/10.2307/1427200.
Full textAbstract:
We consider two storage/production systems in which items are produced continuously over time with fixed rate. In the first system items have infinite lifetime, while in the second system the lifetime of the items are finite and fixed. The inventory level distributions and other important functionals associated with these storage systems are derived. This derivation is accomplished by an analogy existing between the storage systems and certain queueing systems and a finite dam model. Optimization problems connected with these systems are also considered.
42
Chellemi, D. O. "Nonchemical Management of Soilborne Pests in Fresh Market Vegetable Production Systems." Phytopathology® 92, no. 12 (2002): 1367–72. http://dx.doi.org/10.1094/phyto.2002.92.12.1367.
Full textAbstract:
Nonchemical methods including host resistance, organic amendments, crop rotation, soil solarization, and cultural practices have been used to control soilborne pests in fresh market vegetable production systems. Their suitability as alternatives to methyl bromide will depend on the approach to pest management used by the grower. Traditionally, methyl bromide is used in production systems that rely on the single application of a broad-spectrum biocide to disinfest soils prior to planting. Non-chemical methods are not suitable for a single tactic approach to pest management because they do not provide the same broad spectrum of activity or consistency as fumigation with methyl bromide. Nonchemical methods are compatible with an integrated pest management (IPM) approach, where multiple tactics are used to maintain damage from pests below an economic threshold while minimizing the impact to beneficial organisms. However, adoption of IPM is hindered by the paucity of economically feasible sampling programs and thresholds for soilborne pests and by a reluctance of growers to commit additional resources to the collection and management of biological information. A novel approach to the management of soilborne pests is to design the crop production system to avoid pest outbreaks. Using this “proactive” approach, a tomato production system was developed using strip-tillage into existing bahia-grass pasture. By minimizing inputs and disruption to the pasture, growers were able to reap the rotational benefits of bahiagrass without cultivating the rotational crop. While minimizing the need for interventive procedures, a proactive approach is difficult to integrate into existing crop production systems and will require several years of testing and validation.
43
YIN, HONG FENG, and PING LIANG. "A CONNECTIONIST INCREMENTAL EXPERT SYSTEM COMBINING PRODUCTION SYSTEMS AND ASSOCIATIVE MEMORY." International Journal of Pattern Recognition and Artificial Intelligence 05, no. 04 (1991): 523–44. http://dx.doi.org/10.1142/s0218001491000302.
Full textAbstract:
A connectionist expert system model is proposed in this paper. The system combines the capability of production systems and associative memory. Rules are explicitly represented within a network structure. The Perceptron algorithm is generalized to include samples with uncertain components. A gradually-augmented-node learning algorithm is used to guarantee fast memorization of all rules. The convergence of the learning algorithms is analyzed. The system has a dynamic knowledge organization and adapts in real time to acquire new knowledge, or to relearn existing knowledge, through interaction with the user. This allows the system to be built incrementally. An example system is presented.
44
Powolny, Tomasz, and Magdalena Dumańska-Słowik. "Review of existing systems of jaspers nomenclature and classification in Poland and worldwide." Gospodarka Surowcami Mineralnymi 33, no. 2 (2017): 43–52. http://dx.doi.org/10.1515/gospo-2017-0011.
Full textAbstract:
Abstract Nowadays, the term “jasper” is variably defined in petrology and gemology. The unification of the nomenclature and the classification of jaspers seems to be an essential challenge for petrologists worldwide. This misnomer is very commonly used among sellers or collectors of various gemstones. Therefore, a huge diversity in the mineralogical composition, geological settings and genesis of particular “spotted stones” is reported. In this paper the term “jasper” is proposed for all “spotted stones” which have technical properties that make them useful for jewelry and in the production of small stone accessories. Nevertheless, the introduction and approval of the term “true jasper” for rocks of hydrothermal- metasomatic origin and metamorphosed volcanogenic-sedimentary products to petrologic nomenclature is recommended. Different types of jaspers and related rocks have various economic significance. Jaspers or jasper-like rocks are decorative gemstones applied in jewelry, whereas others may be used as refractory materials or feldspar raw materials. In contrast, the petrographic research of jasperoids is useful during prospecting new ore deposits.
45
Oleynikov, Aleksandr. "CONCEPTUAL STRUCTURE OF THE MANAGEMENT SYSTEM IN THE TERRITORALLY DISTRIBUTED ENTERPRISE OF THE SHIPBUILDING INDUSTRY." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2020, no. 3 (2020): 26–33. http://dx.doi.org/10.24143/2072-9502-2020-3-26-33.
Full textAbstract:
Information support of production is the key to the profitability of the enterprise. Timely formation and delivery of documentation, accounting of inventories purchased by production and accounting of products manufactured by the enterprise are simplified by the introduction of management accounting information systems. Such systems are widely represented and have positive feedback from enterprises that have implemented these solutions. Nevertheless, the existing systems, for the most part, cover the needs of enterprises of the engineering complex without taking into account the shipbuilding industry. The choice of systems for the shipbuilding industry is extremely limited in the Russian market. The shipbuilding industry carries out projects similar in complexity to the production of flight equipment. The construction time of some orders may stretch for several years. In this case, management accounting systems implemented at the enterprises of the shipbuilding industry can reduce the time of long-term production, monitor targets and carry out production planning. The paper discusses the main of the existing on the information market, management accounting systems. Their comparative characteristics are given, the possibility of their adaptation to the tasks of the shipbuilding industry is assessed.
46
APAK, Sinan, and Sami ERCAN. "Simulation Based Optimization for World Line Card Production System." An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 2, no. 2 (2012): 95–104. http://dx.doi.org/10.11121/ijocta.01.2012.00107.
Full textAbstract:
Simulation based decision support system is one of the commonly used tool to examine complex production systems. The simulation approach provides process modules which can be adjusted with certain parameters by using data relatively easily obtainable in production process. World Line Card production system simulation is developed to evaluate the optimality of existing production line via using discrete event simulation model with variaty of alternative proposals. The current production system is analysed by a simulation model emphasizing the bottlenecks and the poorly utilized production line. Our analysis identified some improvements and efficient solutions for the existing system.
47
Keane, M. G. "Extensification of beef production - Effects of fertiliser N level on herbage yield, grazing days and performance of beef steers." Proceedings of the British Society of Animal Production (1972) 1994 (March 1994): 149. http://dx.doi.org/10.1017/s0308229600026945.
Full textAbstract:
Existing grassland-based male beef production systems use 200 to 300 kg N/ha and require 9 to 11 t silage plus 700 to 1200 kg concentrates per animal produced. Output is in the range 700 to 800 kg carcass per ha. Arising from the reform of the Common Agricultural Policy (CAP) of the European Union, such beef production systems must be extensified if all the animals are to qualify for the special beef premium. The reformed CAP specifies a maximum stocking density of 2 livestock units (LU) per ha whereas existing systems operate at an intensity of 2.5 to 2.7 LU per ha. The objectives of the present study were (1) to extensify beef production (from dairy bred calves) so as to obtain more production from grazed grass and less from silage and concentrates and (2) to measure the effects of reduced fertiliser N usage on herbage production, stock carrying capacity and animal performance.
48
Kozlovsky, V. N., D. I. Blagoveshchensky, D. V. Aydarov, and D. I. Panyukov. "ANALYSIS OF PROBLEMS AND IDENTIFICATION OF WAYS OF DEVELOPMENT OF PRODUCTION SYSTEMS FOR AUTOMOTIVE PRODUCTION DOI: 10.37313/1990-5378-2020-22-6-57-63." Izvestiya of Samara Scientific Center of the Russian Academy of Sciences 22, no. 6 (2020): 57–63. http://dx.doi.org/10.37313/1990-5378-2020-22-6-57-63.
Full textAbstract:
The article presents the results of the analysis of the current problems of the existing production systems of automobile production of domestic automakers. A comprehensive approach is proposed to overcome the identified problems, taking into account the best practices of world leaders in the industry.
49
Gao, Kaizhou, Yun Huang, Ali Sadollah, and Ling Wang. "A review of energy-efficient scheduling in intelligent production systems." Complex & Intelligent Systems 6, no. 2 (2019): 237–49. http://dx.doi.org/10.1007/s40747-019-00122-6.
Full textAbstract:
Abstract Recently, many manufacturing enterprises pay closer attention to energy efficiency due to increasing energy cost and environmental awareness. Energy-efficient scheduling of production systems is an effective way to improve energy efficiency and to reduce energy cost. During the past 10 years, a large amount of literature has been published about energy-efficient scheduling, in which more than 50% employed swarm intelligence and evolutionary algorithms to solve the complex scheduling problems. This paper aims to provide a comprehensive literature review of production scheduling for intelligent manufacturing systems with the energy-related constraints and objectives. The main goals are to summarize, analyze, discuss, and synthesize the existing achievements, current research status, and ongoing studies, and to give useful insight into future research, especially intelligent strategies for solving the energy-efficient scheduling problems. The scope of this review is focused on the journal publications of the Web of Science database. The energy efficiency-related publications are classified and analyzed according to five criteria. Then, the research trends of energy efficiency are discussed. Finally, some directions are pointed out for future studies.
50
Zeng, Bin, Rui Wang, and Hong Yu Chen. "Design of Simulation Model for Production Scheduling in Flexible Manufacturing Systems." Advanced Materials Research 230-232 (May 2011): 814–18. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.814.
Full textAbstract:
The complex interaction and the high costs of modern manufacturing systems make it necessary to evaluate their use performance. Production scheduling problem is one of the key problems of research of manufacturing systems since with a proper scheduling, the utilization of resources is optimized and orders are produced on time which improves the shop performance and associated cost benefits. However the complexity of modern production systems makes the use of analytical tools more difficult. Thus a computer simulation model of the existing computer integrated manufacturing system based on the control logic that describes the operation of the system is developed to test the performance of different scheduling rules with respect to mean flow time, machine efficiency and total run time as performance measures. According to the results of experiments, the model agrees with the real system.