Готові списки джерел за темами / Chains of operation

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Добірка наукової літератури з теми "Chains of operation"

Автор: Grafiati

Опубліковано: 23 вересня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Chains of operation"

Park, Yang Byung, and Sung Joon Yoon. "A Decision Support System for the Operation of Vending Machine Supply Chains with Product Substitution and Varying Vehicle Speed." Applied Mechanics and Materials 284-287 (January 2013): 3617–21. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.3617.

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This paper presents a decision support system for the operation of general and smart vending machine supply chains with product substitution and varying vehicle speeds. The system supports various functions such as the determination of operation parameters, supply chain performance evaluation, CO2 analysis of delivery vehicle emissions, and more. The potential benefits of the system include the provision of guidance, solutions, and simulation environments for companies in the extensive operations of vending machine supply chains.

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Oliveira de Sousa, Lucas, Marcelo Dias Paes Ferreira, Luisa Vogt, and Marcus Mergenthaler. "CONTRACTS, SOCIAL NETWORK AND KNOWLEDGE DIFFUSION IN BRAZILIAN SUNFLOWER AGRI-FOOD CHAINS FOR POTENTIAL SUPPLY OF INNOVATIVE FOOD PROTEINS." Revista de Economia e Agronegócio 16, no. 1 (May 7, 2018): 8–28. http://dx.doi.org/10.25070/rea.v16i1.545.

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The article analyzes the operation of sunflower agri-food chains in Brazil to understand possible ways to supply innovative sunflower food protein from Brazil. The findings from a multiple-case study approach show that the dynamic of operation of Brazilian sunflower agri-food chains are based on contracts, social network and knowledge diffusion. Although necessary, this governance arrangement has not been able to guarantee a sustainable long-term operation due to market, technological and supply chain management bottlenecks. Regional characteristics influence the level of transaction costs and the role of inputs suppliers in the chains’ operation. The introduction of high value-added food protein products could raise the comparative advantage of sunflower in relation to competing crops, benefiting the chain operation. This article contributes to the understanding of the operation of agri-food chains focused on new or non-established crops, besides reinforcing the complementarity of transaction costs economics and social networks in explaining the functioning of social-economic systems.

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Wang, Ying, and Jing You. "The Operation Mode of Agricultural Supply Chain Finance Using Blockchain." Computational Intelligence and Neuroscience 2022 (September 22, 2022): 1–11. http://dx.doi.org/10.1155/2022/3338030.

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With the rapid development of agriculture, modern agriculture has achieved remarkable results. Agriculture is the foundation of China’s national economy, and the Party Central Committee has always insisted on solving the “three rural issues” as the top priority of the work of the whole party. However, China’s agricultural foundation is weak, and the problem of unbalanced supply and demand structure of agricultural products still exists in agricultural development. With the development of blockchain, the application basis in the agricultural value chain has been established. At present, the research on the application of agricultural value chain financing is still in progress, but it is still in the initial stage. The integration of agricultural finance blockchain is low, and there are a series of problems. Extending blockchain technology to the financial area of agricultural value chains can help overcome the information barriers to traditional agricultural value chain financing and improve access to information resources for traditional agricultural value chains. The high cost of these value chains and inadequate financial management mechanisms remove bottlenecks in financing agricultural development. In this paper, we study the operation model and revenue distribution model of agricultural value chains using blockchain, analyze examples, and finally identify the basic elements of agricultural value chain financing based on sectoral chain technology. It provides theoretical support for the financing decision and production decision of each member of the agricultural supply chain, and it is hoped that the content and conclusions of the study can provide methodological reference and theoretical guidance for agricultural supply chain enterprises.

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Treven, Sonja, Duško Uršič, and Walled Rashad. "How management tools holistically support enterprises’ operation in supply chains?" Management 24, no. 1 (June 29, 2019): 1–20. http://dx.doi.org/10.30924/mjcmi.24.1.1.

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The paper examines how utilization of management tools supports enterprises’ operating in supply chains. The paper critically reviews the results of a previous, survey-based study, with a sample of 198 employees from Slovenian organizations, who assessed utilization of management tools in their organizations. With hierarchical regression analysis authors test the associations between management tools’ usage and enterprises operating in supply chain; the impact was controlled with the most significant personal and organizational drivers of management-tools usage. Results show that loyalty management, core competences, and scenario and contingency planning are most strongly associated with the supply chain management’s activities in organizations. The traditional supply chain management’ tools, like outsourcing, lean production and total quality management, are currently not considered to be important vehicles for supporting enterprises’ participation in supply chains. The results from this study suggest rethinking of the current focus of management tools utilization, when organizations try to improve their participation in supply chains. More management tools were measured than in earlier studies regarding management tools, supporting enterprises’ participation in supply chain; relations between management-tools utilization and enterprise participation in supply chain were empirically examined. In addition, the most commonly used management tools were considered simultaneously, which had not been done in prior studies.

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Roos, A., D. Mutta, M. Larwanou, C. Wekesa, and G. Kowero. "Operations and improvement needs in the informal charcoal sector: a participatory value stream analysis." International Forestry Review 23, no. 3 (September 1, 2021): 351–64. http://dx.doi.org/10.1505/146554821833992802.

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Developing profitable and sustainable charcoal supply chains in Sub-Saharan Africa requires good knowledge about their properties, input needs and impacts. Charcoal supply chains in Taita Taveta and Kwale counties, Kenya, were analysed to identify operational and sustainability improvement opportunities. Using operations man agement, lean engineering and participatory research, charcoal value streams' processes, resources, and outcomes were analysed. Charcoal production and trade have low entry barriers, slow-paced innovation, and thin profit margins for value chain actors. Production is labour intensive, and the actors need specific skills, knowhow, and resources for proper business performance. The value chain's profitability and sustainability can be improved by regenerating exploited quality tree species, improving operation efficiency and safety, promoting market development, and appropriate policies on charcoal production and trade. The study's findings can guide the development of enabling policies and regulatory frameworks for the charcoal industry and improve the actors' performance in the charcoal value chain.

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Shi, Xianchuan, Liang Gao, Lei Qian, Mingya Cheng, and Kyle Jiang. "A coiling robot for elevator compensation chain." Industrial Robot: An International Journal 43, no. 4 (June 20, 2016): 403–8. http://dx.doi.org/10.1108/ir-11-2015-0203.

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Purpose The purpose of this paper is to develop a coiling robot in the production of coated elevator compensation chains to replace the manual coiling operations and improve the quality of compensation chains. Design/methodology/approach This paper introduces both mechanical and servo control system designs of the coiling robot. The structure of two friction wheels stabilizes the conveying speed of compensation chain, so the chain speed matches with the car speed. A centering mechanism pushes the chain to its original position. Seven servo motors are integrated into the system, and they are controlled by a servo control system based on programmable logic controller, positioning controller, analog output block and touch screen. Findings The results of the project show that the coiling robot can both greatly reduce the number of workers and the intensity of the work and improve the quality of the chain. The chain lid by the robot is not only neat, but also uniform in its inner stress. Research limitations/implications When the output speed of the compensation chain from the rear friction wheel does not match the coiling speed, the coiling operation has to be halted. Then, the operator adjusts the chain speed and restarts the coiling operation. Practical implications The coiling robot is proven working. It has been adopted by a leading company manufacturing compensation chains. Originality/value This is the first coiling robot which is practically used in a production line of compensation chains. Its design, mechanism and control systems are of great reference values to people.

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Apriyani, Dwi, Rita Nurmalina, and Burhanuddin Burhanuddin. "EVALUASI KINERJA RANTAI PASOK SAYURAN ORGANIK DENGAN PENDEKATAN SUPPLY CHAIN OPERATION REFERENCE (SCOR)." MIX: JURNAL ILMIAH MANAJEMEN 8, no. 2 (July 12, 2018): 312. http://dx.doi.org/10.22441/mix.2018.v8i2.008.

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Abstract. The purpose of this study is to analyze the performance of organic vegetable supply chains in each member chain to determine the direction of improvement in the fulfillment of consumer needs optimally. The performance of supply chains at the farm level will be differentiated by individuals and commodities. The analytical method used is the Supply Chain Operational Reference (SCOR) model taking into account the internal and external attributes. The primary data used is taken through observation and interview process, meanwhile secondary data obtained from related institutions. The results of measuring the performance of organic vegetable supply chains at all levels of the responsiveness and flexibility attributes have achieved the superior performance position. Meanwhile, the value of organic vegetable supply chain performance on asset attributes at the farm level only reaches a good position. But at the corporate level has reached the best performance position (superior). In general, the performance of the organic vegetable supply chain on the cost attribute still has not achieved good performance. So there is the need for improvement efforts through minimization of cost in each supply chain activity to improve performance.

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Smělíková, E. "Analysis of manufacturing networks and supply chains from the operation strategy perspective ." Agricultural Economics (Zemědělská ekonomika) 52, No. 9 (February 17, 2012): 418–26. http://dx.doi.org/10.17221/5045-agricecon.

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The aim of this paper is to analyse manufacturing networks and supply chains from the operations strategy perspective. These two areas have traditionally been treated as separate research objectives, but under the conditions of the ongoing globalisation, there is a need to integrate these complementary disciplines to study the networks of facilities. In this paper, there is presented a typology for the analysis of the network system resulting in four basic network configurations. On the basis of this configuration, there is presented the coordination matrix, which distinguishes four types of the coordination activities.

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Chen, C., and J. K. Kim. "Optimization for Intelligent Operation of Supply Chains." Chemical Engineering Research and Design 85, no. 12 (January 2007): 1611–29. http://dx.doi.org/10.1016/s0263-8762(07)73206-9.

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Chen, C., and J. K. Kim. "Optimization for Intelligent Operation of Supply Chains." Chemical Engineering Research and Design 85, A12 (December 2007): 1611–29. http://dx.doi.org/10.1205/cherd07007.

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Більше джерел

Дисертації з теми "Chains of operation"

Worinu, Mark. "The operation and effectiveness of formal and informal supply chains for fresh produce in the Papua New Guinea highlands." Master's thesis, Lincoln University. Agriculture and Life Sciences Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20080318.100431/.

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The research aim was to gain a more detailed understanding of the operation of different key segments for fresh produce supply chains originating in the Highlands Provinces in Papua New Guinea (PNG). The research investigates a number of supply chain dimensions of effectiveness which include, value creation and integration of processes, logistics, quality, information, relationship/vertical integration and overall effectiveness. These were linked together in SC framework. Two potato chains were investigated, one formal, the other informal. The informal potato chain involves small holder farmers, input suppliers and local markets including kai bars and the urban market. The chain originates and ends within the Western Highlands Province. The formal potato chain has farmers, input suppliers, wholesaler/marker, transport companies (trucking and coastal shipping agents), supermarkets, hotels and kai bars. This chain originates in Mt Hagen, Western Highlands Province and ends in Port Moresby, National Capital District. The effectiveness of both the formal and informal chains was identified, and comparisons were made to see how each chain differed. The informal chain was found to have different problems to the formal chains. However, participants to both chains demonstrate a high entrepreneurial behavior. A key finding of the study was that the chains spread their risk by operating in multiple market segments and this can help to solve issues with variable quality. The marketers in each chain position themselves in these different market segments. It was clear from this work that focusing on functions and not the whole chain can lead to a distorted view of chain performance. For example, for the informal chain, a focus on logistics issues, particularly poor roads and problems with availability of seeds, can misrepresent the effectiveness of this chain. Therefore, it was concluded that it is important to look at the overall performance of each chain rather than looking specifically at particular chain functions in isolation.

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Baker, Peter. "The Role, Design and Operation of Distribution Centres in Agile Supply Chains." Thesis, Cranfield University, 2008. http://hdl.handle.net/1826/3022.

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The aim of this research is to explore the role of distribution centres (DCs) in agile supply chains, together with how they should be designed, operated and their performances measured within this context. The research is based, first of all, on a survey to ascertain the current situation, and then a series of case studies of international supply chains, DC designs, DC operations, and warehouse automation projects. The techniques used include questionnaires, semi-structured interviews, quantitative measures where appropriate and qualitative measures based on 5-point Likert scales. A number of constructs are used, particularly from supply chain agility and manufacturing agility literature, and these are refined and extended to form the basis for the research. The findings indicate that a prime role of distribution centres, particularly in terms of inventory-holding, is consistent with the decoupling point concept. Further roles for distribution centres in agile supply chains include cross-docking, postponement activities, and returns. The research identifies five types of agility, namely volume, time, unit quantity, presentation and information. The responses to these different types can then be categorised according to the combination of levels (i.e. supply chain, business unit, distribution network, and distribution centre), by the type of resource used (i.e. land / building, equipment, staff, and process / systems), and by how these are deployed (i.e. extra capacity, additional resources when needed, and flexible resources). Agility measurement can be undertaken using the categories of range, mobility and uniformity. With markets becoming more volatile, agility can offer a key source of competitive advantage. However, warehouses are by their nature long-term fixed assets and therefore difficult to incorporate into an agile strategy. The series of frameworks developed during this research begins to address this important area and thus forms a basis for further research as well as providing some initial frameworks to assist practitioners.

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Riahi, Ramin. "Enabling security and risk-based operation of container line supply chains under high uncertainties." Thesis, Liverpool John Moores University, 2010. http://researchonline.ljmu.ac.uk/5991/.

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Container supply chains are vulnerable to many risks. Vulnerability can be defined as an exposure to serious disturbances arising from the risks within the supply chain as well as the risks external to the supply chain. Vulnerability can also be defined as exposure to serious disturbances arising from a hazard or a threat. Containers are one of the major sources of security concerns and have been used, for example, to smuggle illegal immigrants, weapons, and drugs. The consequences of the use of a weapon of mass destruction or discovery of such a device in a container are serious. Estimates suggest that a weapon of mass destruction explosion and the resulting port closure could cost billions of dollars. The annual cost of container losses as consequences of serious disturbances arising from hazards is estimated as $500 million per year. The literature review, historical failure data, and statistical analysis in the context of containerships' accidents from a safety point of view clearly indicate that the container cargo damage, machinery failure, collision, grounding, fire/explosion, and contact are the most significant accident categories with high percentages of occurrences. Another important finding from the literature review is that the most significant basic event contributing to the supply chains' vulnerability is human error. Therefore, firstly, this research makes full use of the Evidential Reasoning (ER) advantages and further develops and extends the Fuzzy Evidential Reasoning (FER) by exploiting a conceptual and sound methodology for the assessment of a seafarer's reliability. Accordingly, control options to enhance seafarers' reliability are suggested. The proposed methodology enables and facilitates the decision makers to measure the reliability of a seafarer before his/her designation to any activities and during his/her seafaring period. Secondly, this research makes full use of the Bayesian Networks (BNs) advantages and further develops and extends the Fuzzy Bayesian Networks (FBNs) and a "symmetric method" by exploiting a conceptual and sound methodology for the assessment of human reliability. Furthermore a FBN model (i. e. dependency network), which is capable of illustrating the dependency among the variables, is constructed. By exploiting the proposed FBN model, a general equation for the reduction of human reliability attributable to a person's continuous hours of wakefulness, acute sleep loss and cumulative sleep debt is formulated and tested. A container supply chain includes dozens of stakeholders who can physically come into contact with containers and their contents and are potentially related with the container trade and transportation. Security-based disruptions can occur at various points along the supply chain. Experience has shown that a limited percentage of inspection, coupled with a targeted approach based on risk analysis, can provide an acceptable security level. Thus, in order not to hamper the logistics process in an intolerable manner, the number of physical checks should be chosen cautiously. Thirdly, a conceptual and sound methodology (i. e. FBN model) for evaluating a container's security score, based on the importer security filling, shipping documents, ocean or sea carriers' reliability, and the security scores of various commercial operators and premises, is developed. Accordingly, control options to avoid unnecessary delays and security scanning are suggested. Finally, a decision making model for assessing the security level of a port associated with ship/port interface and based on the security score of the ship's cargo containers, is developed. It is further suggested that regardless of scanning all import cargo containers, one realistic way to secure the supply chain, due to lack of information and number of variables, is to enhance the ocean or sea carriers' reliability through enhancing their ship staff's reliability. Accordingly a decision making model to analyse the cost and benefit (i.e. CBA) is developed.

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Vogt, John Joseph. "The design principles and success factors for the operation of cross dock facilities in grocery and retail supply chains." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50133.

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Dissertation (PhD)--Stellenbosch, 2004.
ENGLISH ABSTRACT: The dissertation reflects the research done on the design principles and success factors for the operation of cross dock facilities in grocery and retail supply chains. The cross dock is a particular facility in the supply chain where goods are received from suppliers, sorted without storage of the goods, and then efficiently moved to downstream customers. Cross docks are not a new operation. However, the use in high volume grocery and retail operational capabilities is poorly understood and is not uniquely defined. The problem is that cross docks are often seen as extensions of warehouses. The same personnel, systems and processes are applied and the efficiency potential of the cross dock is not achieved. Warehouses are orientated towards storing the full range of product and allowing the pick to be done from this storage buffer to provide any or all of these products to a customer. Cross docks will only handle products that are used in larger quantities and that are sent to most, if not all, the customers. The cross dock is therefore distinct and very different from the traditional warehouse. The published research tends to focus on the technical aspects of the cross dock layout. This research is primarily in the scheduling of the trucks into the yard of the facility; the allocation of trucks to specific doors of the facility; and the allocation of doors to receiving and despatch functions within the facility. Very little information or research reflects the design principles and success factors for the cross dock and its supply chain. The only classification of the cross dock in the literature is whether the barcode is added to the item before or after receipt at the cross dock. For this research work a literature survey was conducted and five major operations were reviewed, in South Africa and the USA. The research empirically drew logical conclusions, which were tested in the operations and found to be correct. This allowed the design principles and success factors to be determined for a successful cross dock. The research extends the knowledge of the cross dock operation and design: - • A new classification for the feasible types of cross docks in the supply chain was developed. Three factors are shown to be of primary importance: - o Where in the supply chain the identification of specific items for a customer is done; o Where the sort is done for the items to be delivered to a customer; and o Whether the supplier is providing one product or multiple products to the sort. From these three factors, eight potential classifications could be defined. However, only three practical types of cross dock can be determined from these eight alternatives. These are named in this research as Cross Dock Managed Load (CML); Joint Managed Load (JML); and the Supplier Managed Load (SML). The cross dock is far more effective than the warehouse when the total work (excluding inventory) is considered. The earlier in the supply chain the product is identified for the use of the entire downstream supply chain, the more effective will be the total supply chain. Thus the greatest supply chain effectiveness possible is with the SML, then the JML and finally the CML. • The operation of a cross dock is very similar to a continuous manufacturing process. There is no buffer of stock to decouple the inbound and outbound processes, and the operation takes place in a restricted area. However, in the retail chain, the workload alters with different orders and different days. Daily load differences vary by as much as 90%. This results in vastly different workloads and variations of throughput. This is similar to a batch operation with highly variable workloads between batches. The literature recommends the use of Just in Time (JIT) practice for cross docks. This is inappropriate as its primary requirements are continuous full volume operation and continuous small improvements to achieve a balanced operation. The most appropriate method of process improvement is the Theory of Constraints (TO C) and not JlT. • The management must have a detailed, disciplined approach. This implies standardised methods of operation, and a high degree of training. Equally there is the requirement for a special type of personnel to operate the cross dock. These operating personnel must be able to operate with precision (i.e. very low error rates) and be able to maintain this capability for continuous periods. • The systems required for a successful operation must include the capabilities of Yard Management, WMS for cross docking, Order Management with Advanced Shipping Notice (ASN) capability and Track and Trace across the supply chain. The items need to be identified by a barcode. The information required on the barcode will be determined by. the information systems capability of the least advanced service provider in the supply chain. If this service provider can receive and transmit all the data required for the supply chain from and to the other members, then the barcode need only be an identification number of the specific item. The data pertaining to the items is then passed from system to system in the supply chain. If data movement is not possible between all the parties in the entire supply chain, then the barcode must contain the information that will identify the item, the origin and the final delivery destination. If the items are delivered as part of a consignment, a further quantum of information is required to identify the total number of items in the consignment and the specific item within the consignment. • The research shows that the overall capability of the cross dock or its maximum capacity is the combination of the capability of the personnel and the cross dock design. Restrictions on either the personnel capability or the design of the cross dock, or both, severely reduces the effectiveness of the cross dock. • The previous research on the sequence of allocation of trucks to specific doors within the cross dock can be enhanced with a new sequencing method. The new method allocates the transport, in sequence of arrival, to the open door that either numrruses the walk distance in the facility; or maximises the completion of the consignments in order to minimise the area required to build the consignments; or a combination of both. The choice of these will be determined by the constraints imposed by the design of the building. This is an important extension as this ties the supply chain into the cross dock operation, rather than looking at the cross dock in isolation as has been done in this previous research. • The factors that influence the design of a cross dock as to its size, shape, number of doors, and the specifically required additional areas, is defined in detail. The principles of these factors and their inter-relationships and dependencies are used in a detailed design for a cross dock. The detailed design process is set out from data analysis through to the actual size calculations and layouts. Measurements of walk distance and sort movement are used to determine the most effective design. The design is shown to be considerably more effective than the older designs. This work has significantly extended the research on the design principles and success factors for implementation of cross docks in retail supply chains. The research derives a unique new classification for cross docks. An improvement is made to existing research on the allocation of the transport to particular doors in the cross dock. The operation, management and personnel are shown to require specific characteristics. The information systems required for effective cross docks is determined and defined. The identification of the individual items by barcode and the information required within the barcode depending on the information sophistication of the service providers in the supply chain is defined. A detail process to design a cross dock is evolved, with the full knowledge of the factors that must be considered and their interrelationships. Measurements to determine the effectiveness of the design are used to choose the most appropriate design. All these are then synthesised into a new design, which is far more effective than any of the other designs researched. The design process will produce a very effective cross dock as has been demonstrated with a new facility.
AFRIKAANSE OPSOMMING: geen opsomming

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Bodea, Tudor Dan. "Choice-based revenue management a hotel perspective /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24739.

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Thesis (Ph.D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008.
Committee Chair: Garrow, Laurie Anne; Committee Member: Castillo, Marco; Committee Member: Ferguson, Mark; Committee Member: McCarthy, Patrick; Committee Member: Meyer, Michael.

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Oliveira, André Marcorin de. "Estimating and control of Markov jump linear systems with partial observation of the operation mode." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-01032019-144518/.

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In this thesis, we present some contributions to the Markov jump linear systems theory in a context of partial information on the Markov chain. We consider that the state of the Markov chain cannot be measured, but instead there is only an observed variable that could model an asynchronous phenomenon between the application and the plant, or a simple fault detection and isolation device. In this formulation, we investigate the problem of designing controllers and filters depending only on the observed variable in the context of H2, H?, and mixed H2/H? control theory. Numerical examples and academic applications are presented for active-fault tolerant control systems and networked control systems.
Nesta tese, apresentamos algumas contribuições para a teoria de sistemas lineares com saltos markovianos em um contexto de observação parcial da cadeia de Markov. Consideramos que o estado da cadeia de Markov não pode ser medido, porém existe uma variável observada que pode modelar um fenômeno assíncrono entre a aplicação e a planta, ou ainda um dispositivo de detecção de falhas simples. Através desse modelo, investigamos o problema da síntese de controladores e filtros que dependem somente da variável observada no contexto das teorias de controle H2, H?, e misto H2/H?. Exemplos numéricos e aplicações acadêmicas são apresentadas no âmbito dos sistemas de controle tolerantes a falhas e dos sistemas de controle através da rede.

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Ben-Zvi, Noa. "(OR)² : operations research applied to operating room supply chain." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91096.

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Анотація:

Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014. In conjunction with the Leaders for Global Operations Program at MIT.
Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2014. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 63).
Massachusetts General Hospital (MGH) is ranked as the top hospital in New England and second nation-wide. It is also the largest hospital in New England; it uses an average of 58 operating rooms, where approximately 150 surgical procedures are performed daily. Management of surgical supplies is a critical component of the processes supporting this infrastructure. Specifically, ensuring the right equipment and supplies are available at the right time is critical for the efficiency and quality outcomes of each of the procedures. The materials management group handles over 10,000 unique items, purchased from more than 400 vendors. The majority (60-70%) of disposable supplies are ordered through Owens & Minor, a medical and surgical supplies distributor. The supplies are stored in multiple locations throughout the hospital, including two central locations as well as carts and cabinets on the surgical floors and in the operating rooms. The work described in this thesis focuses on the inventory management of disposable surgical supplies, where the current system design has inefficiencies in the inventory levels and location of items. Using a data-driven approach, based on historical demand, we calculate base stock levels by item that maintain three days of inventory at a 99 percent service level. In addition, we suggest a methodology to support decisions on inventory locations of the different items. Implementation of the recommended changes is estimated to result in savings of 30-40% in inventory levels (and space), corresponding to a one time saving of $700,000-$900,000, depending on the implementation scenario. In addition, the reduction in inventory levels can be translated to future savings in inventory holding costs at an estimated 40% rate, leading to a saving of roughly $300,000 annually.
by Noa Ben-Zvi.
S.M.
M.B.A.

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Shum, Wanhang. "Effective contracts in supply chains." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40385.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2007.
Includes bibliographical references (p. 115-121).
In the past decade, we have seen significant increase in the level of outsourcing in many industries. This increase in the level of outsourcing increases the importance of implementing effective contracts in supply chains. In this thesis, we study several issues in supply chain contracts. In the first part of the thesis, we study the impact of effort in a supply chain with multiple retailers. The costly effort engaged by a retailer may increase or decrease the demands of other retailers. However, effort is usually not verifiable and hence not contractible. Based on the impact of a retailer's effort on its own and other retailers' revenue, we classify each retailer into different categories. According to the corresponding categories of all retailers, we identify coordinating contracts and general classes of contracts that cannot coordinate. Second, we study the stability of coordinating contracts in supply chains. We illustrate that, due to competition, not all coordinating contracts are achievable. Thus, we introduce the notion of rational contracts, which reflects the agents "bargaining power". We propose a general framework for coordinating and rational contracts. Using this framework, we analyze two supply chains, a supply chain with multiple suppliers and single retailer, and a supply chain with a single supplier and price-competing retailers.
(cont.) We identify coordinating contracts for each case and characterize the bounds on profit shares for the agents in any rational contracts. Finally, we study the robustness of coordinating contracts to renegotiation. Applying the concept of contract equilibrium, we show that many coordinating contracts are not robust to bilateral renegotiation if the relationship between the supplier and the retailers is a one-shot game. If the supplier and retailers engage in long-term relationship, then many coordinating contracts are robust to bilateral renegotiation. We also extend concept of contract equilibrium to the concept of strong contract equilibrium to study the robustness of contracts to multilateral renegotiation. We show that, in repeated game setting, the concept of strong contract equilibrium is related to the concept of rational contracts.
by Wanhang (Stephen) Shum.
Ph.D.

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Cruz-Mejia, Oliverio. "Merge-in-transit supply chains : operations analysis." Thesis, Lancaster University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543964.

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Haloukas, Daniel G. "Strategies to Mitigate Supply Chain Disruption Risks." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/6573.

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Businesses with global supply chains typically have a minimum of 1 interruption to their supply chain annually, which can decrease profitability and affect overall company performance. The purpose of this multiple case study was to explore strategies personal care business supply chain managers used to mitigate supply chain disruption risk. The targeted population was 9 supply chain managers working in 5 different Fortune 500 consumer packaged goods personal care companies in the northeastern United States who have successfully used strategies to mitigate supply chain disruptions. Corporate risk management was used as the conceptual framework of the study to determine how company leaders plan for supply chain disruptions and how leaders prioritize and resource implementation and assessment of these plans. Data collection included semistructured interviews, with review of each company's documents as the secondary source of data. Data were analyzed using thematic analysis. Two main themes emerged: identification of a qualified alternative supplier is a common strategy in supply chain disruption mitigation plans, and business top management support is essential in the execution of supply chain disruption plans and strategies. Results of this study might contribute to social change by empowering supply managers to make alternative choices relative to suppliers that will make products more affordable to consumers. An empowered supply management team leads to high return of investments for companies, which can support employment and additional tax revenue to support social programs.

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Книги з теми "Chains of operation"

Canters, G. W., and E. Vijgenboom, eds. Biological Electron Transfer Chains: Genetics, Composition and Mode of Operation. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5133-7.

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Ching, Wai-Ki. Markov Chains: Models, Algorithms and Applications. 2nd ed. Boston, MA: Springer US, 2013.

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The operation of internal labor markets: Staffing practices and vacancy chains. New York: Plenum Press, 1995.

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Advanced diploma in procurement and supply: Operation management in supply chains. [Maidenhead?]: Profex Pub. Ltd., 2012.

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Krajewski, Lee J. Operations management processes and value chains. 8th ed. Upper Saddle River, NJ: Pearson Prentice Hall, 2007.

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P, Ritzman Larry, and Malhotra, Manoj K. (Manoj Kumar), 1960-, eds. Operations management: Processes and supply chains. Upper Saddle River, N.J: Pearson, 2013.

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P, Ritzman Larry, ed. Operations management: Processes and value chains. 7th ed. Upper Saddle River,NJ: Pearson Education, Inc, 2005.

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Press, Business Expert, ed. Sustainable operations and closed-loop supply chains. [New York, N.Y.] (222 East 46th Street, New York, NY 10017): Business Expert Press, 2012.

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B, Chase Richard, and Jacobs F. Robert, eds. Operations and supply chain management. New York: McGraw-Hill Irwin, 2010.

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Supply chain and operations management. Acton, Mass: Copley Custom Textbooks, 2011.

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Частини книг з теми "Chains of operation"

Pinfield, Lawrence T. "Minimal Vacancy Chains." In The Operation of Internal Labor Markets, 79–103. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1019-6_4.

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Pinfield, Lawrence T. "Long Vacancy Chains." In The Operation of Internal Labor Markets, 139–61. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1019-6_6.

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Pinfield, Lawrence T. "Medium-Length Vacancy Chains." In The Operation of Internal Labor Markets, 105–38. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1019-6_5.

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Dutton, P. L., X. Chen, C. C. Page, S. Huang, T. Ohnishi, and C. C. Moser. "Respiratory Electron Transfer Chains." In Biological Electron Transfer Chains: Genetics, Composition and Mode of Operation, 3–8. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5133-7_1.

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Pinfield, Lawrence T. "Vacancy Chains as Bundles of Staffing Actions." In The Operation of Internal Labor Markets, 61–77. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1019-6_3.

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Barrad, Sherif, Raul Valverde, and Stéphane Gagnon. "The Application of System Dynamics for a Sustainable Procurement Operation." In Innovative Solutions for Sustainable Supply Chains, 179–96. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94322-0_7.

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McComb, Christopher, Jonathan Cagan, and Kenneth Kotovsky. "Utilizing Markov Chains to Understand Operation Sequencing in Design Tasks." In Design Computing and Cognition '16, 401–18. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-44989-0_22.

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Gontarczyk, Mariusz, Magdalena Rykała, and Jarosław Zelkowski. "Operation of supply chains in the COVID-19 pandemic conditions." In Logistics, Transport and the COVID-19 Crisis, 52–68. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003285731-4.

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Suzuki, Kuninori, Yoji Murayama, Keizo Wakabayashi, and Akihiro Watanabe. "Efficiency of Crew Assignment in Truck Freight Operation from the View of Logistics." In Environmental Sustainability in Asian Logistics and Supply Chains, 219–31. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0451-4_12.

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Henry, Matthew, and Carolyn Morris. "Fantasies of Logistics in Aotearoa New Zealand." In Beyond Global Food Supply Chains, 87–97. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3155-0_7.

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AbstractLogistics is a form of calculative reasoning and set of material practices framed by the fantasy of perpetual, seamless circulation. This fantasy is built on ideas of universal connection and fungibility that sit beyond the teeming messiness of lived, unpacified life. The fantasy of connection is, however, continually haunted by an anxiety that an irruption of liveliness will disrupt material flows and expectations of plenitude. In this chapter, we draw on two case studies of food disruption from Aotearoa New Zealand—pork and flour—to interrogate these promises. The two cases take the form of vignettes when the regular operation of logistics relationships was in some way affected by the COVID-19 response of the Aotearoa New Zealand government and other actors. We argue that the character and impact of the disruption experienced in each case study are specific to its material and cultural particularities and that the particularities of disruption themselves provide a valuable analytical entry point for understanding the fragility and contingency of logistics. This leads us to show that the critical analysis of logistics relationships needs to move beyond a mirroring of claims to universality and is more insightful when it is attentive to the specific materialities of things and their liveliness.

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Тези доповідей конференцій з теми "Chains of operation"

Cooper, K. P., and D. Lindley. "Global safety culture, or strategic chains of co-operation?" In 8th IET International System Safety Conference incorporating the Cyber Security Conference 2013. Institution of Engineering and Technology, 2013. http://dx.doi.org/10.1049/cp.2013.1717.

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Gabrielsen, Øystein, Kjell Larsen, Oddgeir Dalane, Hans B. Lie, and Svein-Arne Reinholdtsen. "Mean Load Impact on Mooring Chain Fatigue Capacity: Lessons Learned From Full Scale Fatigue Testing of Used Chains." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95083.

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Abstract Fatigue of mooring chain is for many floating offshore installations a limiting factor in design. With aging installations and the need for field life extension beyond the original design life, questions on mooring chain endurance are raised. Current SN curves utilized in fatigue limit state (FLS) calculation are based on full scale testing of new chain, performed at a high mean load level (20% of the chains minimum breaking load (MBL)). The high mean load level in the tests do not correspond to the conditions for many chains in operation, as mean load in fatigue relevant seastates are often significantly less than mean load used in the new chain fatigue tests. Mooring chains in operation also experience different degree of corrosion, both general corrosion and pitting. Surface roughness and corrosion pits contribute to crack initiations, and thus reduce fatigue capacity. Fatigue tests with new chain condition cannot be assumed representative for corroded chains. As part of mooring integrity programs, Equinor has been replacing mooring chains since year 2000. To assess actual fatigue capacity, many chain segments have been full scale fatigue tested. First tests started in 2011, and the tests cover different degrees of corrosion. The tests have been performed at typical mean load levels relevant for operation of the installations, which for most cases are less than 20%MBL. From these tests it is observed that fatigue capacity in some cases are better than expected for new chain, even for chain segments with significant corrosion. Fatigue test results show a large effect of the mean load. For test cases with significant corrosion and high mean load (20%MBL), a significant reduction in fatigue capacity compared to new chains is found. This paper presents some of the fatigue test results on used chain, highlighting the effect of the mean load for the given chain conditions. Effect of corrosion at mean load of 20%MBL is also included. The paper discusses some of the underlaying causes for the mean load dependency.

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Kim, Insoo, and Hyoung Bok Min. "Operation about multiple scan chains based on system-on-chip." In 2008 International SoC Design Conference (ISOCC). IEEE, 2008. http://dx.doi.org/10.1109/socdc.2008.4815716.

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Verma, Neerav, Andrew Wasson, Zhen Li, Harpreet Sidhar, Haiping He, HyunWoo Jin, HyunJo Jun, Adnan Ozekcin, and Shiun Ling. "New Material Development for Offshore Mooring Chains: High Manganese Steel." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95541.

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Abstract Oil and gas industry experiences indicate that corrosion and wear of conventional mooring chain is an issue, which can result in costly pre-emptive chain replacement in an offshore environment. There is a need to develop new material technologies with improved performance over conventional carbon steel mooring chains to improve chain reliability. This paper summarizes the development work on one such material — High Manganese Steel (HMS). A version of this steel has been utilized for superior wear performance at oil sands operation in Canada. This paper describes details on HMS chemistry optimization and lab testing for mooring chain application. In addition, Gleeble experiments were carried out to understand HMS hot deformation behavior and weldability. Development testing work on HMS material has shown promising results in terms of corrosion and wear performance, relative to carbon steel mooring chains.

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Chen, Jiaxin, Xin Liao, Wei Wang, and Zheng Qin. "A Features Decoupling Method for Multiple Manipulations Identification in Image Operation Chains." In ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2021. http://dx.doi.org/10.1109/icassp39728.2021.9414628.

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Kurucz, Attila, Fachri Rizky Sitompul, and Edit Süle. "Digitalization of Agri-food Supply Chains: Facts and Promises of Blockchain Technology." In XV. International Conference on Logistics in Agriculture 2021. University of Maribor Press, 2021. http://dx.doi.org/10.18690/978-961-286-538-2.3.

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With the globalization agri-food supply chains become longer and more complex, what makes it difficult to manage. parallel with this there is increasing customer demand for knowing the origin, ingredients and delivery chain of agricultural products. the need for more efficient, traceable and visible supply chain for agri-food products appears from supply side. The digital methods of industry 4.0 are able to provide solutions for these demands particularly those which are able to trace product reliable way from its origin to consumption. blockchain is a disruptive technology by which every important product information can be collected, stored and shared with the actors involved in the product process chain from the first phase to the final customer. The paper provides an overview about blockchain technology and its operation in agri-food supply chains environment, then presents some examples from the practice of different countries where blockchain was applied in the agricultural sector in order to introduce experiences as facts, and further possibilities as promises by blockchain.

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Yang, Ting-Li, and Dun-Jin Sun. "Rank and Mobility of Single Loop Kinematic Chains." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49076.

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This paper presents a novel method for determining rank and mobility of single loop kinematic chains which is totally different from the methods based on screw theory and based on displacement subgroup. The rank of single loop kinematic chains can be determined via the position and orientation characteristic (in short, POC) equation and its symbolic operation of serial mechanism presented by authors. The symbolic operation of the POC equation is simpler and has clear geometrical meaning. The method for determining the rank of single loop kinematic chains can be used for calculating DOF of parallel mechanisms.

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Tsoulfas, Giannis T. "Factors affecting the design and operation of reverse supply chains: a grey-based DEMATEL approach." In 2022 14th International Colloquium of Logistics and Supply Chain Management (LOGISTIQUA). IEEE, 2022. http://dx.doi.org/10.1109/logistiqua55056.2022.9938040.

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Drees, Ludwig, and Florian Holzapfel. "Determining and Quantifying Hazard Chains and their Contribution to Incident Probabilities in Flight Operation." In AIAA Modeling and Simulation Technologies Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-4855.

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Smaili, Ahmad, and Bachir Chaaya. "Stackable 5R Chains With Multiple End-Effectors: Architecture and Optimum Synthesis." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99717.

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Presented in this paper is a 4-dof robomech consisting of a stack of two five-bar (5R) chains with multiple end effectors to perform two distinct yet coordinated tasks simultaneously. The over-constrained kinematics chain cannot traverse continuous trajectories but may be synthesized to move the end effectors through a set of desired locations. The article elaborates on the architecture of the proposed robomech, establishes its kinematics relations and constraints, and provides dimensional synthesis scheme based on genetic algorithm and gradient search methods. A case study featuring the robomech performing spot welding operation along two distinct trajectories is included to demonstrate the applicability of the proposed robomech.

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Звіти організацій з теми "Chains of operation"

Mosqueira, Edgardo, Francisco Gaetani, and Mariano Lafuente. Brazil: Ministry of the Economy: Analysis of Key Functions and their Operational Macroprocesses: Benchmarking Operational Macroprocesses with Experiences from Canada, France, Peru, Spain, the United Kingdom, and the United States. Inter-American Development Bank, June 2022. http://dx.doi.org/10.18235/0004294.

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This technical note benchmarks Brazils Ministry of the Economy (ME) value chains and macroprocesses against relevant management models and practices used by ministries of finance, economy, or equivalent in selected Latin American and Organization for Economic Co-operation and Development (OECD) countries. This analysis, undertaken in the context of the creation of the ME by merging five former ministries, was intended to help identify gaps in current practices and propose recommendations for enhancing specific macroprocesses in Brazil. A team, including former ministers of finance and experts from these selected countries, participated in the technical analysis and discussions together with specialists from the Inter-American Development Bank. The findings show: (i) positive initial results after the merge in terms of policy coordination, coherence, and efficiency; (ii) recent policy reforms in line with OECD practices, some of which have just started to be implemented; and (iii) opportunities to continue enhancing management practices in selected macroprocesses.

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Apostolos A. Nikolopoulos and Santosh K. Gangwal. CHAIN-LIMITING OPERATION OF FISCHER-TROPSCH REACTOR. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/834796.

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Apostolos A. Nikolopoulos and Santosh K. Gangwal. CHAIN-LIMITING OPERATION OF FISCHER-TROPSCH REACTOR. Office of Scientific and Technical Information (OSTI), June 2003. http://dx.doi.org/10.2172/825370.

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Coyner, Kelley, and Jason Bittner. Infrastructure Enablers and Automated Vehicles: Trucking. SAE International, July 2022. http://dx.doi.org/10.4271/epr2022017.

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While automated trucking developers have established regular commercial shipments, operations and testing remain limited largely to limited-access highways like interstates. This infrastructure provides a platform or operating environment that is highly structured, with generally good road conditions and visible lane markings. To date, these deployments have not included routine movements from hub to hub, whether on or off these limited-access facilities. Benefits such as safety, fuel efficiency, staffing for long-haul trips, and a strengthened supply chain turn enable broader deployment which can enable movement from one transportation system to another. Infrastructure Enablers and Automated Vehicles: Trucking focuses on unresolved issues between the automated vehicle industry and infrastructure owners and operators that stand in the way of using infrastructure—both physical and digital—to extend use cases for automated trucking to more operational design domains (ODDs). The report also examines opportunities and recommendations related the integration of automated trucking across transportation networks and the supply chain. The topics include road conditions and lane marking visibility, work zone navigation, transfer hubs, and facility design, as well as connected and electric charging infrastructure.

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Belharouak, Ilias, Jagjit Nanda, Ethan Self, William Hawley, David Wood III, Zhijia Du, Jianlin Li, and Ronald Graves. Operation, Manufacturing, and Supply Chain of Lithium-ion Batteries for Electric Vehicles. Office of Scientific and Technical Information (OSTI), August 2020. http://dx.doi.org/10.2172/1737479.

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Lyons, Andrew, Adrian E. Coronado, and Dennis Kehoe. An Information Systems Requirements Architecture for Customer-Driven, Supply-Chain Operations. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0077.

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Shoop, Sally, Clifford Witte, Sebastian Karwaczynski, Clifton Ellis, Eoghan Matthews, Steven Bishel, Barry Bomier, et al. Improving winter traction for vehicles in northern operations. Engineer Research and Development Center (U.S.), December 2021. http://dx.doi.org/10.21079/11681/42524.

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As part of the campaign to increase readiness in northern regions, a near commercial off-the-shelf (COTS) solution was identified for the High Mobility Multipurpose Wheeled Vehicle (HMMWV); and used to assess the suitability of commercially available winter tires for operational deployment. Initial performance evaluations conducted during the winters of 2020 and 2021 demonstrated and quantified significant improvements to traction and handling on a variety of winter surfaces. User feedback from United States Army Alaska (USARAK) Soldiers confirmed these results in an operational environment. Results of this study provide new winter tire specifications for the Army and justify the procurement of a HMMWV winter tire for improved safety and capability for US Soldier and vehicle fleet needs. The data and Soldier evaluations support attaining a National Stock Number (NSN) and provide data to develop models of winter vehicle performance that include the impact of winter tires and chains. This work also paves the way for future development and procurement of winter tires for vehicles where COTS solutions are unavailable. The motivation is to provide Soldiers with state-of-the-art winter tires to increase safety, capability, and operational compatibility with North Atlantic Treaty Organization (NATO) partners in the European Theater of Operations, and mobility superiority in all environments.

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Kuperman, W. A. Secretary of the Navy/Chief of Naval Operations, Chairs of Oceanographic Sciences. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada541153.

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Koenig, Karen A. Operations and Maintenance Task Order (OMTO)/Southern Border Initiative (SBInet) Supply Chain Approach. Fort Belvoir, VA: Defense Technical Information Center, January 2012. http://dx.doi.org/10.21236/ada566322.

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