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Journal articles on the topic 'Integrated production and transportation planning'
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Liang, Tien-Fu, Hung-Wen Cheng, and Earl-Juei Wang. "Integrated production/transportation planning decisions using possibilistic linear programming." Journal of Information and Optimization Sciences 27, no. 2 (May 2006): 437–57. http://dx.doi.org/10.1080/02522667.2006.10699701.
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Meisel, Frank, Thomas Kirschstein, and Christian Bierwirth. "Integrated production and intermodal transportation planning in large scale production–distribution-networks." Transportation Research Part E: Logistics and Transportation Review 60 (December 2013): 62–78. http://dx.doi.org/10.1016/j.tre.2013.10.003.
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Mou, Deyi, and Xiaoding Chang. "An Uncertain Programming for the Integrated Planning of Production and Transportation." Mathematical Problems in Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/419358.
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The goal of this paper is to tackle joint decisions in assigning production and organizing transportation for single product in a production-transportation network system with multiple manufacturers and multiple demands. In order to meet practical situation, assume that the variant costs and the amounts of the consumption of raw materials that every manufacturer produces per unit product are all uncertain variables in manufacturing processes; meanwhile, the demands that each destination needs are random variables in the transportation problem. Then, a joint optimization model of production and transportation is developed, in which the uncertain chance constraint and the stochastic chance constraint are applied in the manufacturing processes and the transporting processes, respectively, and transformed into a deterministic form by taking expected value on objective function and confidence level on the constraint functions. Finally, a practical example points out the effectiveness of our model.
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Azadian, Farshid, Alper Murat, and Ratna Babu Chinnam. "Integrated production and logistics planning: Contract manufacturing and choice of air/surface transportation." European Journal of Operational Research 247, no. 1 (November 2015): 113–23. http://dx.doi.org/10.1016/j.ejor.2015.06.004.
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Lee, Amy H. I., He-Yau Kang, Sih-Jie Ye, and Wan-Yu Wu. "An Integrated Approach for Sustainable Supply Chain Management with Replenishment, Transportation, and Production Decisions." Sustainability 10, no. 11 (October 25, 2018): 3887. http://dx.doi.org/10.3390/su10113887.
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Sustainable supply chain management is important for most firms in today’s competitive environment. This study considers a supply chain environment under which the firm needs to make decisions regarding from which supplier and what quantity of parts should be purchased, which vehicle with a certain emissions amount and transportation capacity should be assigned, and what kind of production mode should be used. The integrated replenishment, transportation, and production problem is concerned with coordinating replenishment, transportation, and production operations to meet customer demand with the objective of minimizing the cost. The problem considered in this study involves heterogeneous vehicles with different emission costs, various materials with dissimilar emission costs, and distinct production modes, each with their own emission costs. In addition, multiple suppliers with different quantity discount schemes are considered, different kinds of vehicles with different loading capacities and traveling distance limits are present, and different production modes with different production capacities and production costs are included. A mixed integer programming model is proposed first to minimize the total cost, which includes the ordering cost, purchase cost, transportation cost, emission cost, production cost, inventory-holding cost, and backlogging cost, while satisfying various constraints in replenishment, transportation, and production. A particle swarm optimization model is constructed next to deal with large-scale problems that are too complicated to solve by the mixed integer programming. The main advantage of the proposed models lies in their ability to simultaneously coordinate the replenishment, transportation, and production operations in a planning horizon. The proposed particle swarm optimization model could further identify a near-optimal solution to the complex problem in a very short computational time. To the best of the authors’ knowledge, this is the first paper that considers the sustainable supply chain management problem with multiple suppliers, multiple vehicles, and multiple production modes simultaneously. Case studies are presented to examine the practicality of the mixed integer programming and the particle swarm optimization models. The proposed models can be adopted by the management to make relevant supply chain management decisions.
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Karimi, Behzad, Mahsa Ghare Hassanlu, and Amir Hossein Niknamfar. "An integrated production-distribution planning with a routing problem and transportation cost discount in a supply chain." Assembly Automation 39, no. 5 (November 4, 2019): 783–802. http://dx.doi.org/10.1108/aa-10-2017-127.
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Purpose The motivation behind this research refers to the significant role of integration of production-distribution plans in effective performance of supply chain networks under fierce competition of today’s global marketplace. In this regard, this paper aims to deal with an integrated production-distribution planning problem in deterministic, multi-product and multi-echelon supply chain network. The bi-objective mixed-integer linear programming model is constructed to minimize not only the total transportation costs but also the total delivery time of supply chain, subject to satisfying retailer demands and capacity constraints where quantity discount on transportation costs, fixed cost associated with transportation vehicles usage and routing decisions have been included in the model. Design/methodology/approach As the proposed mathematical model is NP-hard and that finding an optimum solution in polynomial time is not reasonable, two multi-objective meta-heuristic algorithms, namely, non-dominated sorting genetic algorithm II (NSGAII) and multi-objective imperialist competitive algorithm (MOICA) are designed to obtain near optimal solutions for real-sized problems in reasonable computational times. The Taguchi method is then used to adjust the parameters of the developed algorithms. Finally, the applicability of the proposed model and the performance of the solution methodologies in comparison with each other are demonstrated for a set of randomly generated problem instances. Findings The practicality and applicability of the proposed model and the efficiency and efficacy of the developed solution methodologies were illustrated through a set of randomly generated real-sized problem instances. Result. In terms of two measures, the objective function value and the computational time were required to get solutions. Originality/value The main contribution of the present work was addressing an integrated production-distribution planning problem in a broader view, by proposing a closer to reality mathematical formulation which considers some real-world constraints simultaneously and accompanied by efficient multi-objective meta-heuristic algorithms to provide effective solutions for practical problem sizes.
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Kembe, M. M., A. R. Kimbir, and E. M. Ogbuagu. "Minimizing the Cost of Transporting Goods Produced in an Integrated Foods Company." NIGERIAN ANNALS OF PURE AND APPLIED SCIENCES 6 (December 28, 2015): 106–11. http://dx.doi.org/10.46912/napas.15.
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The transportation cost of goods in any company or organization is a pivotal element in determining the total cost of production and also the net profit that will be made. The main aim of this study is to minimize the cost of transporting goods produced at Grand Cereals Limited, Jos, which is reducing the cost of transportation from the major plant where the goods are produced to the various distribution centers. Data was collected on the average quantity of Brabusco Maize Flour (10 kg), Grand Pure Soya Oil (10 litres), Vita Chicks Pelletized Feeds (25 kg, 9 mm) and Royal Layer Concentrate Feeds (25 kg) produced monthly at the Jos plant, the average quantity demanded by major distributors across the country (Yola, Dutse, Minna, Abuja, Aba, Onitsha, Calabar and Ikeja) and the cost of transporting them. The Vogel's Approximation Method of the TORA Optimization System Software was used in solving the formulated transportation problem, and an optimal solution of N3,427,821.00 was obtained, which reduced the monthly transportation cost by N332,179.00. Furthermore, sensitivity analysis was carried out on the parameters after the optimal solution was obtained, which shows that the optimal solution is strongly sensitive to changes in the problem parameters. It was concluded that this work has reduced the transportation cost of the company and therefore recommended to the management of the company for adoption in planning their transportation schedule at a minimum cost.
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Zaytsev, Yevgeniy, Yelena Konikova, Ilya Tetslav, and Ivan Shaidurov. "INTEGRATED SECURITY OF TRANSPORT LOGISTICAL SYSTEM OF MULTIMODAL TRANSPORTATION." Bulletin of scientific research results, no. 4 (December 17, 2017): 101–19. http://dx.doi.org/10.20295/2223-9987-2017-4-101-119.
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Objective: To study the conceptual approach to the problem of integrated security, involving cooperation of transport logistical system participants of multimodal transportation (TLS SP), including aerial cargo delivery system, on the principles of the unity of information environment and intellectualization of transport systems management using the global positioning system GLONASS/GPS. Methods: The methods of TLS SP systematization and structural decomposition were applied, as well as the method of TLS SP matrix simulation, considering collaboration of the means of production in case certain operations are performed by each traffic participant on all route stages from a manufacturer to a receiver. Results: Horizontal decomposition of TLS SP was performed on the principle of the unity of the main transport process, taking into account integrated security requirements at each stage of goods traffic from a manufacturer to a receiver: making up, loading, transportation on different types of transport, cargo transfer and unloading at a receiving point. The main areas of transport intellectualization in Russia and abroad were studied. The new requirements for intellectualization of airport systems, air traffic control systems and aviation services were considered, presenting a unified aviation system and determining further directions of systems study, taking into account the perturbing factors at all stages and activities of the system in question. The suggestions on TLS SP intellectualization areas at all stages of planning and transportation fulfillment from a manufacturer to a receiver were given, making it possible to provide further development of supply chain management concept and formation of 5PL-provider transportation services at the market. Practical importance: The suggestions on the formation of TLS SP integrated security system were developed, using the latest data management technologies – intellectual transport systems, in order to improve the security and efficiency of transport processes, to minimize the delays and to improve working conditions.
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Lim, Seng, Bailin Wu, Xavier Choi, Chong Yau Wong, Bahrom Madon, Maharon Jadid, Zurita Johar, Amir Zamberi, and Amira Shaffee. "Addressing sand production challenges — an integrated research approach." APPEA Journal 55, no. 2 (2015): 445. http://dx.doi.org/10.1071/aj14080.
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Sand production may be induced by many factors, such as reservoir pressure depletion, excessive draw-down pressure and water-cut. When transported from the formation, the sand particles can cause serious damage to completion and topside assets, impacting the overall productivity and safety of the operating wells. The sand management strategy for a particular field requires careful planning, evaluation and implementation to ensure effective and safe well productivity. The associated CAPEX and OPEX implications and risks can be high if the sanding problem is not managed carefully. This requires a good understanding of field-specific sanding problems. PETRONAS and CSIRO have collaborated on an integrated research program to provide a better understanding of the critical issue affecting sand production and develop associated predictive tools. This involved a multidisciplinary team from geomechanics, fluid mechanics and mathematics to examine the entire sand production process from sand generation, control and transportation to ensure an optimum sand management strategy. This extended abstract provides an overview of the research methodology based on experimental and numerical modelling techniques supported by field information. The study focuses on sand production behaviour, as well as failure of down-hole sand control equipment. The research led to better prediction and quantification of the sand production propensity, as well as erosion severity on critical production equipment. Insights and operational guidelines were also established to assist production and facility engineers in managing sand production challenges. This integrated research methodology would be applicable to unconventional resource areas, such as coal seam gas or shale gas production.
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Omar, Nor Miza Hazwani, Masine M. Tap, and Norizah Redzuan. "Conceptual Optimization Model of Inventory/Distribution Network with Multi Role Nodes." Advanced Materials Research 845 (December 2013): 692–95. http://dx.doi.org/10.4028/www.scientific.net/amr.845.692.
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Production and distribution planning might come as one integrated system or separately managed. The distribution planning may include the storage and handling of products, transportation and delivery of products, and so on. Some industries may have inventory/distribution network which are very complex, due to its distribution network and may also be subjected to specific routing restriction. The restriction may affect the optimization of the performance of the distribution network. The aim of this paper is to present a conceptual model which minimizes the total distribution cost for a multi production plant, multi distribution center and multi retailers under seasonal demand and multi time period. The supply chain under consideration comprises of multi role nodes as the production plant and/or distribution center.
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Wollert, Juergen, Markus Lehne, and Bernd E. Hirsch. "Modeling for Ship Design and Production." Journal of Ship Production 8, no. 01 (February 1, 1992): 48–58. http://dx.doi.org/10.5957/jsp.1992.8.1.48.
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The flexible operating and changing of the complex one-of-a-kind shipbuilding environment has to be based on adequate concepts and instruments to handle the related controlling, planning and implementation tasks. Product modeling defines the physical and application driven product-related information. It is of basic importance to support this environment, especially the concurrent engineering functions, during the whole product life cycle. Process modeling supports the implementation and operation of complex CIM (Computer Integrated Manufacturing) oriented processes. In this paper some modeling applications within European shipbuilding research and development projects will be highlighted from the viewpoint of an integrated product and process modeling approach. The following projects referenced: NEUTRABAS (Neutral Database for Complex Multifunctional Systems) explores a broad application field of product information for ship steel structure and outfitting systems; ROCOCO (Real Time Monitoring and Control of Construction Site Manufacturing) develops a CIM application and demonstrates this application within the pipe outfitting environment of a ship berth construction site; and MARIN-ABC (Marine Industry Applications of Broadband Communication) demonstrates new applications and services in the maritime transportation business based on future mobile satellite networks.
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Ekşioğlu, Sandra Duni, Burak Ekşioğlu, and H. Edwin Romeijn. "A Lagrangean heuristic for integrated production and transportation planning problems in a dynamic, multi-item, two-layer supply chain." IIE Transactions 39, no. 2 (February 2007): 191–201. http://dx.doi.org/10.1080/07408170600733244.
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Herrán, Alberto, Fantahun M. Defersha, Mingyuan Chen, and Jesús M. de la Cruz. "An integrated multi−period planning of the production and transportation of multiple petroleum products in a single pipeline system." International Journal of Industrial Engineering Computations 2, no. 1 (January 1, 2011): 19–44. http://dx.doi.org/10.5267/j.ijiec.2010.06.004.
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Santos, Paulo Amaro Velloso Henriques dos, Arinei Carlos Lindbeck da Silva, Julio Eduardo Arce, and Andrey Lessa Derci Augustynczik. "A Mathematical Model for the Integrated Optimization of Harvest and Transport Scheduling of Forest Products." Forests 10, no. 12 (December 4, 2019): 1110. http://dx.doi.org/10.3390/f10121110.
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The costs related to forest harvesting and wood transport are key to the economic viability of forest investments. These operations compose a major share of the total cost of wood production and thus need to be conducted in an efficient manner. In this paper, we propose a novel optimization model to tackle this issue and perform the daily and weekly plan of harvesting operations, in order to minimize the costs related to the machinery operation, movement, and wood transportation, subject to demand constraints. Our results show that transportation costs dominate the total cost of these operations. The model proposed is appropriate and can be effectively applied to optimize the operational planning of harvesting activities. Nevertheless, instances with a large number of stands may lead to a substantial increase in the complexity and computational burden. We conclude that operations research techniques can provide a solid basis for decision-making in harvest scheduling problems and increase the efficiency of forest management.
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Vorobyov, Valery, Aleksey Manakov, Anatoly Reger, and Iuliia Tanaino. "Optimization of processes in railways based on the cost management model." MATEC Web of Conferences 216 (2018): 02009. http://dx.doi.org/10.1051/matecconf/201821602009.
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The main aim of activities of the branches of vertically integrated Russian Railways JSC is enhancing of manageability and efficiency of business operations. At the current stage, the issue of optimization of costs for product transportation and facilities maintenance in the system of production and technological processes of the railway network has gained relevance. The purpose of this study is development of a mathematical model for the logistic system of transportation, storage, cargo-handling operations, facilities maintenance and reconstruction. Methods of spatial and dynamic modeling in the structure of end-to-end planning of operations were used in the study. Optimization criterion is aggregate cost minimization. Cost function is proposed in the form of local functions of multiple sections along the railway network. The modeling result consists in determining the plans of transportation and supply with minimum costs.
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Asmussen, Jesper Normann, Jesper Kristensen, Kenn Steger-Jensen, and Brian Vejrum Wæhrens. "When to integrate strategic and tactical decisions? Introduction of an asset/inventory ratio guiding fit for purpose production planning." International Journal of Physical Distribution & Logistics Management 48, no. 5 (June 4, 2018): 545–68. http://dx.doi.org/10.1108/ijpdlm-02-2018-0058.
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Purpose Significant transitions in firms (e.g. outsourcing) may impact the relative importance of production and inventory assets, affecting the hierarchical separation of planning decisions. The purpose of this paper is to contribute to planning literature by investigating how the production system and the planning environment influence the performance difference between hierarchical and monolithic planning. Further, it seeks to reduce the prevailing theory-practice gap in tactical planning. Design/methodology/approach Through an action research study, a monolithic model integrating tactical production planning decisions, subject to upstream supply chain constraints, with strategic investments decisions was developed, tested and implemented in a global OEM. Using the developed model and a measure of the capital cost of production assets relative to the cost of holding inventory, it is numerically examined how the production system and planning environment influence the performance of hierarchical and monolithic planning. Findings The research demonstrates the potential of integrating decisions and reveals significant performance differences between hierarchical and monolithic planning for firms with low capital cost relative to inventory holding cost. Research limitations/implications The findings suggest a fit between planning processes, the production system and planning environment. Future research should empirically validate the findings and propositions. Originality/value The paper combine capital investments and production planning decisions, which usually transpire at different hierarchical levels and on different time-horizons, and investigates the consequences of hierarchical separation through a real-life validated case and numerical analysis.
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SAKALLI, Umit Sami, and Irfan ATABAS. "Ant Colony Optimization and Genetic Algorithm for Fuzzy Stochastic Production-Distribution Planning." Applied Sciences 8, no. 11 (October 24, 2018): 2042. http://dx.doi.org/10.3390/app8112042.
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In this paper, a tactical Production-Distribution Planning (PDP) has been handled in a fuzzy and stochastic environment for supply chain systems (SCS) which has four echelons (suppliers, plants, warehouses, retailers) with multi-products, multi-transport paths, and multi-time periods. The mathematical model of fuzzy stochastic PDP is a NP-hard problem for large SCS because of the binary variables which determine the transportation paths between echelons of the SCS and cannot be solved by optimization packages. In this study, therefore, two new meta-heuristic algorithms have been developed for solving fuzzy stochastic PDP: Ant Colony Optimization (ACO) and Genetic Algorithm (GA). The proposed meta-heuristic algorithms are designed for route optimization in PDP and integrated with the GAMS optimization package in order to solve the remaining mathematical model which determines the other decisions in SCS, such as procurement decisions, production decisions, etc. The solution procedure in the literature has been extended by aggregating proposed meta-heuristic algorithms. The ACO and GA algorithms have been performed for test problems which are randomly generated. The results of the test problem showed that the both ACO and GA are capable to solve the NP-hard PDP for a big size SCS. However, GA produce better solutions than the ACO.
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Steinrücke, Martin. "An approach to integrate production-transportation planning and scheduling in an aluminium supply chain network." International Journal of Production Research 49, no. 21 (November 2011): 6559–83. http://dx.doi.org/10.1080/00207543.2010.528461.
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Monteiro, M. M., J. E. Leal, and F. M. P. Raupp. "A Four-Type Decision-Variable MINLP Model for a Supply Chain Network Design." Mathematical Problems in Engineering 2010 (2010): 1–16. http://dx.doi.org/10.1155/2010/450612.
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We propose a mixed integer nonlinear programming model for the design of a one-period planning horizon supply chain with integrated and flexible decisions on location of plants and of warehouses, on levels of production and of inventory, and on transportation models, considering stochastic demand and the ABC classification for finished goods, which is an NP-hard industrial engineering optimization problem. Furthermore, computational implementation of the proposed model is presented through the direct application of the outer approximation algorithm on some randomly generated supply chain data.
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Troncoso, Juan, Sophie D’Amours, Patrik Flisberg, Mikael Rönnqvist, and Andrés Weintraub. "A mixed integer programming model to evaluate integrating strategies in the forest value chain — a case study in the Chilean forest industry." Canadian Journal of Forest Research 45, no. 7 (July 2015): 937–49. http://dx.doi.org/10.1139/cjfr-2014-0315.
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When a company is integrated vertically, it can manage and plan its overall value chain in one direct and integrated approach. However in many cases, companies follow a decoupled approach where forests and production plants optimize separately their processes in a supply-driven strategy. In Chile, the two largest forest companies are vertically integrated (i.e., they own forest and mills that produce logs, lumber, plywood, pulp, paper, and bioenergy, etc.). Historically, they have coordinated their value chains using a make-to-stock strategy, for which the forest is the main driver of the value chain activities. In this paper, we propose an integrated planning approach to show the impacts of a demand-driven integration of the value chain in the forest industry. To compare this strategy with the decoupled strategy, we propose a mixed integer programming (MIP) model for the integrated strategy. To illustrate our proposal, we use forest and production information from a Chilean forest company. The decoupled strategy, where the forest and industry planning are planned separately, uses two models. The first model deals with the forest management and harvesting decisions and maximizes the expected net present value (NPV) of logs. In this model, the planning horizon covers one full forest rotation, which in Chile corresponds to about 25 years. The second model maximizes the NPV of the downstream operations for a shorter business planning horizon (five years) constrained by the availability of the logs from the first model. In the integrated approach, all parts of the value chain (forest, transportation, and mills) are driven by final product demand and where the objective is to maximize the profit of the company (NPV of the entire value chain). The demand is only given for the shorter business planning horizon. The two strategies are evaluated using the MIP model, and NPV is used to determine the best practice. According to the results, the NPV can increase up to 5.0% when the proposed integrated strategy is implemented compared to a decoupled strategy. Moreover, the profit for the business period increases up to 8.5%.
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Li, Xinchao, Xin Jin, Shan Lu, Zhe Li, Yue Wang, and Jiangtao Cao. "Carbon-Efficient Production Scheduling of a Bioethanol Plant Considering Diversified Feedstock Pelletization Density: A Case Study." Processes 8, no. 9 (September 18, 2020): 1189. http://dx.doi.org/10.3390/pr8091189.
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This paper presents a dual-objective optimization model for production scheduling of bioethanol plant with carbon-efficient strategies. The model is developed throughout the bioethanol production process. Firstly, the production planning and scheduling of the bioethanol plant’s transportation, storage, pretreatment, and ethanol manufacturing are fully considered. Secondly, the carbon emissions in the ethanol manufacturing process are integrated into the model to form a dual-objective optimization model that simultaneously optimizes the production plan and carbon emissions. The effects of different biomass raw materials with optional pelletization density and pretreatment methods on production scheduling are analyzed. The influence of demand and pretreatment cost on selecting a pretreatment method and total profit is considered. A membership weighted method is developed to solve the dual-objective model. The carbon emission model and economic model are integrated into one model for analysis. An example is given to verify the effectiveness of the optimization model. At the end of the paper, the limitation of this study is discussed to provide directions for future research.
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Ghanei, S., and T. AlGeddawy. "An Integrated Multi-Period Layout Planning and Scheduling Model for Sustainable Reconfigurable Manufacturing Systems." Journal of Advanced Manufacturing Systems 19, no. 01 (March 2020): 31–64. http://dx.doi.org/10.1142/s0219686720500031.
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In a dynamic production environment, not only the customer’s needs change with time, but the economic aspects of that environment, such as energy pricing, also change. Reconfigurable Manufacturing Systems (RMSs) are designed to respond to such changes by reconfiguring system components efficiently. This paper presents a novel mathematical model to maximize energy sustainability of RMS. The novelty aspect of the model is the consideration of energy sustainability concurrently with system configuration and scheduling decisions in each period of the planning horizon. The objective of this mixed integer linear model is to minimize the total cost of energy consumption, system reconfiguration, and part transportation between machines, depending on fluctuations of energy pricing and demand during different periods. Several case studies are solved by GAMS Software to illustrate the performance of the presented model and analyze its sensitivity to the volatility of energy pricing and demand to show their effect on system changeability. An efficient genetic algorithm (GA) has been developed to solve the model in larger scale due to its NP-hardness and compared to GAMS for validation. Results show that the presented GA finds near-optimal solutions in 70% shorter time than GAMS on average.
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Al-Thani, Sarah M., and Raffaello Furlan. "An Integrated Design Strategy for the Urban Regeneration of West Bay, Business District of Doha (State of Qatar)." Designs 4, no. 4 (December 10, 2020): 55. http://dx.doi.org/10.3390/designs4040055.
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Emergent communities have integrated land use and transportation plan based on transit-oriented developments (TODs) and light rail transit with the sole purpose to enliven and redevelop the constructed environment. Doha has undergone some major transformation in urban growth context due to surge in the economy instigated by oil and gas production. It is noticed that the rapid growth has led to negative impacts in terms of urban design, connectivity, and transportation. It is essential to understand the impact of the TOD model with regards to the challenges and approaches in terms of planning procedures and tactics. The purpose of TOD module is to facilitate access for public transportation and to enable transit commutation which is a missing aspect in the current setting. TODs support and enable sustainable urbanism by revitalizing the livability through integration of land use schemes in the city. This paper focuses on bringing together TOD livability approaches within West Bay, the business district of Doha and its adjacent surroundings. The objective of this research is to assess the livability in West Bay with the implementation of the TOD model. The research findings help to revisit the design and application of TOD models and to enhance the livable conditions for its occupants. The finding suggests a design model based on livability, compactness, public realms, walkability, and accessibility.
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Nguyen, Han-Khanh. "Combining DEA and ARIMA Models for Partner Selection in the Supply Chain of Vietnam’s Construction Industry." Mathematics 8, no. 6 (May 27, 2020): 866. http://dx.doi.org/10.3390/math8060866.
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The competition between enterprises in the construction market is fierce. If enterprises are unable to afford financial and technological capabilities, they could go bankrupt. Therefore, the implementation of alliances between businesses can help increase their competitiveness. In this study, the authors simultaneously used data envelopment analysis (DEA), the Grey model (GM (1,1)), and autoregressive integrated moving average (ARIMA) to choose a suitable strategic partner to boost the strength of each business and cut the cost of transportation and personnel in an attempt to help managers come up with suitable solutions, offer sustainability, and develop creative management. The results show that the chosen solution improves the business efficiency of construction businesses and offers cost savings on materials, production, and transportation. Management agencies can use the results of this study to propose suitable orientations, strengthen decision-making, and ensure strategic planning to develop the construction sector in Vietnam.
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Ekşioğlu, Sandra Duni, Hadi Karimi, and Burak Ekşioğlu. "Optimization models to integrate production and transportation planning for biomass co-firing in coal-fired power plants." IIE Transactions 48, no. 10 (August 13, 2016): 901–20. http://dx.doi.org/10.1080/0740817x.2015.1126004.
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Lohano, Heman D., Fateh M. Mari, and Rajab A. Memon. "Testing Onion Market Integration in Pakistan." Pakistan Development Review 44, no. 4II (December 1, 2005): 717–28. http://dx.doi.org/10.30541/v44i4iipp.717-728.
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Spatial market integration of agricultural products has been widely used to indicate overall market performance [Faminow and Benson (1990)]. In spatially integrated markets, competition among arbitragers will ensure that a unique equilibrium is achieved where local prices in regional markets differ by no more than transportation and transaction costs. Information of spatial market integration, thus, provides indication of competitiveness, the effectiveness of arbitrage, and the efficiency of pricing [Sexton, et al. (1991)]. If price changes in one market are fully reflected in alternative market, these markets are said to be spatially integrated [Goodwin and Schroeder (1991)]. Prices in spatially integrated markets are determined simultaneously in various locations, and information of any change in price in one market is transmitted to other markets [Gonzalez-Rivera and Helfand (2001)]. Markets that are not integrated may convey inaccurate price signal that might distort producers marketing decisions and contribute to inefficient product movement [Goodwin and Schroeder (1991)], and traders may exploit the market and benefit at the cost of producers and consumers. In more integrated markets, farmers specialise in production activities in which they are comparatively proficient, consumers pay lower prices for purchased goods, and society is better able to reap increasing returns from technological innovations and economies of scale [Vollrath (2003)].
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Xu, P., F. Valette, F. Brissaud, A. Fazio, and V. Lazarova. "Technical-economic modelling of integrated water management: wastewater reuse in a French island." Water Science and Technology 43, no. 10 (May 1, 2001): 67–74. http://dx.doi.org/10.2166/wst.2001.0583.
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An integrated technical-economic model is used to address water management issues in the French island of Noirmoutier. The model simulates potable water production and supply, potable and non potable water demand and consumption, wastewater collection, treatment and disposal, water storage, transportation and reuse. A variety of water management scenarios is assessed through technical, economic and environmental evaluation. The scenarios include wastewater reclamation and reuse for agricultural and landscape irrigation as well as domestic non potable application, desalination of seawater and brackish groundwater for potable water supply. The study shows that, in Noirmoutier, wastewater reclamation and reuse for crop irrigation is the most cost-effective solution to the lack of water resources and the protection of sensitive environment. Some water management projects which are regarded as having less economic benefit in the short-term may become competitive in the future, as a result of tightened environmental policy, changed public attitudes and advanced water treatment technologies. The model provides an appropriate tool for water resources planning and management.
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Pham, Thi, and Gi-Tae YEO. "A Comparative Analysis Selecting the Transport Routes of Electronics Components from China to Vietnam." Sustainability 10, no. 7 (July 12, 2018): 2444. http://dx.doi.org/10.3390/su10072444.
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Vietnam has successfully integrated itself into the global value chains (GVCs) as a base for the assembly and production of electronics goods and mobile phones beyond China. Therefore, adequate transport routes from China to Vietnam are essential factors for a seamless supply chain. This study aimed to evaluate the competing transport routes for door-to-door transportation from Shenzhen (China) to Hai Phong (Vietnam) from the logistics service providers and shippers’ perspective. The Delphi method and the Consistent Fuzzy Preference Relations (CFPR) method were employed, using both qualitative and quantitative factors. The results illustrate that, among the principal factors, reliability is prioritized, followed by transportation costs, transportation mode capacity, and transportation time. Meanwhile, of the sub-factors, risk of freight damage and loss is the most important. The route using airway and truck is preferred over the two alternatives. Furthermore, a sensitivity analysis was conducted to examine the possibility of rank reversal. Thus, the study offers crucial academic and practical implications.
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Naworyta, Wojciech, Szymon Sypniowski, and Jörg Benndorf. "Planning for Reliable Coal Quality Delivery Considering Geological Variability: A Case Study in Polish Lignite Mining." Journal of Quality and Reliability Engineering 2015 (January 29, 2015): 1–9. http://dx.doi.org/10.1155/2015/941879.
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The aim of coal quality control in coal mines is to supply power plants daily with extracted raw material within certain coal quality constraints. On the example of a selected part of a lignite deposit, the problem of quality control for the run-of-mine lignite stream is discussed. The main goal is to understand potential fluctuations and deviations from production targets dependent on design options before an investment is done. A single quality parameter of the deposit is selected for this analysis—the calorific value of raw lignite. The approach requires an integrated analysis of deposit inherent variability, the extraction sequence, and the blending option during material transportation. Based on drill-hole data models capturing of spatial variability of the attribute of consideration are generated. An analysis based on two modelling approaches, Kriging and sequential Gaussian simulation, reveals advantages and disadvantages lead to conclusions about their suitability for the control of raw material quality. In a second step, based on a production schedule, the variability of the calorific value in the lignite stream has been analysed. In a third step the effect of different design options, multiple excavators and a blending bed, was investigated.
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Ranky, Paul G. "A generic tool management system architecture for flexible manufacturing systems (FMS)." Robotica 6, no. 3 (July 1988): 221–34. http://dx.doi.org/10.1017/s0263574700004331.
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SUMMARYConsidering the fact that Flexible Manufacturing Systems (FMS) should be able to accommodate a variety of different parts in random order, tool management at cell level and tool transportation, tool data management, tooling data collection, tool maintenance, and manual and/or robotized tool assembly at FMS system level are very important. Tooling information in FMS is used by several subsystems, including: production planning, process control, dynamic scheduling, part programming, tool preset and maintenance, robotized and/or manual tool assembly, stock control and materials storage.The paper summarizes the major tasks to be solved when designing tool management systems for FMS, as well as gives a solution for describing the data structure of a tool data base integrated with a generic tool description method, and shows a sample transaction of the way the FMS real-time control system can access and use this data base.
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Finzi, Alberto, Gabriele Mattachini, Daniela Lovarelli, Elisabetta Riva, and Giorgio Provolo. "Technical, Economic, and Environmental Assessment of a Collective Integrated Treatment System for Energy Recovery and Nutrient Removal from Livestock Manure." Sustainability 12, no. 7 (April 1, 2020): 2756. http://dx.doi.org/10.3390/su12072756.
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The aim of this 5-year study was to evaluate the technical, economic, and environmental performances of a collective-based integrated treatment system for bioenergy production and nutrients removal to improve the utilization efficiency and reduce the environmental impact of land applied livestock manure. The study involved 12 livestock production units located in an intensive livestock area designated as nitrate vulnerable zone with large N surplus. The treatment system consisted of an anaerobic digestion unit, a solid–liquid separation system, and a biological N removal process. Atmospheric emissions and nutrient losses in water and soil were examined for the environmental assessment, while estimated crop removal and nutrient utilization efficiencies were used for the agronomic assessment. The integrated treatment system achieved 49% removal efficiency for total solids (TS), 40% for total Kjeldahl nitrogen (TKN), and 41% for total phosphorous (TP). A surplus of 58kWh/t of treated manure was achieved considering the electricity produced by the biogas plant and consumed by the treatment plant and during transportation of raw and treated manure. A profit of 1.61 €/t manure treated and an average reduction of global warming potential by 70% was also achieved. The acidification potential was reduced by almost 50%. The agronomic use of treated manure eliminated the TKN surplus and reduced the TP surplus by 94%. This collective integrated treatment system can be an environmentally and economically sustainable solution for farms to reduce N surplus in intensive livestock production areas.
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Petrescu, Letitia, Dora-Andreea Chisalita, Calin-Cristian Cormos, Giampaolo Manzolini, Paul Cobden, and H. van Dijk. "Life Cycle Assessment of SEWGS Technology Applied to Integrated Steel Plants." Sustainability 11, no. 7 (March 27, 2019): 1825. http://dx.doi.org/10.3390/su11071825.
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The environmental evaluation of the sorption-enhanced water–gas shift (SEWGS) process to be used for the decarbonization of an integrated steel mill through life cycle assessment (LCA) is the subject of the present paper. This work is carried out within the STEPWISE H2020 project (grant agreement No. 640769). LCA calculations were based on material and energy balances derived from experimental activities, modeling activities, and literature data. Wide system boundaries containing various upstream and downstream processes as well as the main integrated steel mill are drawn for the system under study. The environmental indicators of the SEWGS process are compared to another carbon capture and storage (CCS) technology applied to the iron and steel industry (e.g., gas–liquid absorption using MEA). The reduction of greenhouse gas emissions for SEWGS technology is about 40%. For the other impact indicators, there is an increase in the SEWGS technology (in the range of 7.23% to 72.77%), which is mainly due to the sorbent production and transportation processes. Nevertheless, when compared with the post-combustion capture technology, based on gas–liquid absorption, from an environmental point of view, SEWGS performs significantly better, having impact factor values closer to the no-capture integrated steel mill.
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Geiger, Martin Josef, Lucas Kletzander, and Nysret Musliu. "Solving the Torpedo Scheduling Problem." Journal of Artificial Intelligence Research 66 (September 2, 2019): 1–32. http://dx.doi.org/10.1613/jair.1.11303.
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The article presents a solution approach for the Torpedo Scheduling Problem, an operational planning problem found in steel production. The problem consists of the integrated scheduling and routing of torpedo cars, i. e. steel transporting vehicles, from a blast furnace to steel converters. In the continuous metallurgic transformation of iron into steel, the discrete transportation step of molten iron must be planned with considerable care in order to ensure a continuous material flow.
The problem is solved by a Simulated Annealing algorithm, coupled with an approach of reducing the set of feasible material assignments. The latter is based on logical reductions and lower bound calculations on the number of torpedo cars.
Experimental investigations are performed on a larger number of problem instances, which stem from the 2016 implementation challenge of the Association of Constraint Programming (ACP). Our approach was ranked first (joint first place) in the 2016 ACP challenge and found optimal solutions for all used instances in this challenge.
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Shoshanov, S. B., S. S. Makhanov, and L. N. Salykova. "ORGANIZATION OF REFINED PRODUCTS SALES IN KAZAKHSTAN." BULLETIN 389, no. 1 (February 10, 2021): 194–201. http://dx.doi.org/10.32014/2021.2518-1467.26.
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The article presents the main theoretical and methodological approaches to the sale of refined products. The views of scientists and economists on the sales of refined products and its categories are considered. Organization schemes of petroleum products sales on domestic and world markets, multilevel marketing system, routes of product movement (logistics chain of product movement) have been substantiated. The main documents (futures), risk insurance (hedging), planning the organization of sales of petroleum products, the impact of marketing programs on the choice of sales channel are considered. The article presents the formation of sales channels for petroleum products in vertically integrated oil companies. The tasks for timely provision of consumers with petroleum products have been clarified. The optimal choice of efficient schemes for cargo transportation of refined products, logistics schemes for their transportation and temporary storage, and rationality of transit forms of delivery of oil products to consumers are indicated. The main goals of achieving optimal sales systems for petroleum products by vertically integrated oil companies are revealed. The possibility of having special divisions for the sale and export of refined products by large oil companies is justified. The analysis of indicators of demand and supply of petrochemical products on the world markets with the author's positions on the current situation on the world oil markets in connection with the coronavirus pandemic. The analysis and assessment of production and consumption of basic petroleum products on the domestic markets of Kazakhstan is given. As a separate example, the analysis of diesel fuel consumption by regions and sectors of the national economy of Kazakhstan was carried out.
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Naor, Michael, Alex Coman, and Anat Wiznizer. "Vertically Integrated Supply Chain of Batteries, Electric Vehicles, and Charging Infrastructure: A Review of Three Milestone Projects from Theory of Constraints Perspective." Sustainability 13, no. 7 (March 24, 2021): 3632. http://dx.doi.org/10.3390/su13073632.
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This research utilizes case study methodology based on longitudinal interviews over a decade coupled with secondary data sources to juxtapose Tesla with two high-profile past mega-projects in the electric transportation industry, EV-1 and Better Place. The theory of constraints serves as a lens to identify production and market bottlenecks for the dissemination of electric vehicles. The valuable lessons learned from EV1 failure and Better Place bankruptcy paved the way for Tesla’s operations strategy to build gigafactories which bears a resemblance to Ford T mass production last century. Specifically, EV1 relied on external suppliers to develop batteries, while Better Place was dependent on a single manufacturer to build cars uniquely compatible with its charging infrastructure, whereas Tesla established a closed-loop, green, vertically integrated supply chain consisting of batteries, electric cars and charging infrastructure to meet its customers evolving needs. The analysis unveils several limitations of the Tesla business model which can impede its worldwide expansion, such as utility grid overload and a shortage of raw material, which Tesla strives to address by innovating advanced batteries and further extending its vertically integrated supply chain to the mining industry. The study concludes by sketching fruitful possible avenues for future research.
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Santner, Richard. "PLANNING AND TRAINING FOR TIER 1 RESPONSE IS FUNDAMENTALTO EFFECTIVE RESPONSE AT ALL LEVELS1." International Oil Spill Conference Proceedings 2005, no. 1 (May 1, 2005): 759–61. http://dx.doi.org/10.7901/2169-3358-2005-1-759.
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ABSTRACT The oil industry concept of tiered preparedness and response has long been established as a valuable model for developing an appropriate response structure, with capabilities commensurate with oil spill events and their associated consequences. A Tier 1 incident is typically referred to as an operational one occurring at or near a company's own facilities, as a consequence of its own activities. An individual company would typically provide resources to respond to this type of spill. The Tier 1 part is often seen as the smallest and thus the least significant and this Paper asks whether enough planning and training is done at this level. Different oil industry activities encompassing exploration, production, shipping transportation, oil handling facilities and even pipelines, give rise to a varied and broad range of scenarios that call for different Tier 1 solutions. In any spill event, speed and efficiency of first response, and the awareness of the integrated tiered solution that ensures an appropriate call for additional resources when required, will make a significant difference to the effectiveness of the overall response. Thus we need to spend time and effort planning well and training at the Tier 1 level. This Paper describes some of the possible Tier 1 scenarios that may be applied to the planning process and the key issues that need to be considered, to ensure Tier 1 capabilities are appropriate, effective and robust, and can be relied upon to support the tiered escalation of response.
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Oliveira de Melo, Luciano, David Barbosa de Alencar, Alexandra Priscilla Tregue Costa, and Marden Eufrasio dos Santos. "Transport Logistics Analysis of Amazon Application." International Journal for Innovation Education and Research 7, no. 11 (November 30, 2019): 1000–1009. http://dx.doi.org/10.31686/ijier.vol7.iss11.1960.
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The current marketing system faces one of the major challenges of finding strategies for safer logistics, both in quality and practicality to the competitive process that can be applied in the market. Transport infrastructure plays a significant role in the logistics process, as it impacts transport costs, bringing limits to the economic and social development of the region. In terms of transportation logistics in the Amazon, there are still obstacles where companies are constantly seeking to divert or solve such difficulties, since the state has geographical specificities, where its extensive rivers make the flow of production more difficult, so In this way, it is essential to understand how public waterway transportation policies contribute to the logistical bottlenecks of Amazonas. The state of Amazonas maintains about 600 km of state roads, however precariously, making traffic slow, and with the lack of BRs, the state is also penalized. Manaus has BR 174 and BR 210 that connects the municipality to Boa Vista, and BR 319 that connects Amazonas with the rest of the country is not completed and there is no concrete deadline for its completion, given the many difficulties and flaws. faced in that region. Regarding transport logistics in the most exclusive North Region in Amazonas, one particularity stands out: the lack of integrated planning for infrastructure that can bring positive results, both social and economic.
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JAILANI, MUHAMMAD ABDUL AZIS, and ACHMAD ZAINI. "STRATEGI PEMASARAN SALAK PONDOH (Sallacca zalacca) DI DESA PADANG PENGRAPAT KECAMATAN TANAH GROGOT KABUPATEN PASER KALIMANTAN TIMUR (Marketing Strategy of Salak Pondoh (Sallacca zalacca) in Padang Pengrapat Village Tanah Grogot Subdistrict Paser District East Kalimantan)." JURNAL AGRIBISNIS DAN KOMUNIKASI PERTANIAN (Journal of Agribusiness and Agricultural Communication) 1, no. 2 (October 1, 2018): 89. http://dx.doi.org/10.35941/akp.1.2.2018.1710.89-97.
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Marketing strategy is a comprehensive plan, integrated, and unified in the field of marketing, which is obtained from the identification of internal and external factors. The aims of this research were to identify the internal and external factors and to find the alternative of marketing strategy of salak pondoh in Padang Pengrapat Village Tanah Grogot Subdistrict Paser District. Research was held from August to October 2017. The sampling method was census with 30 respondents. Data was analyzed by using SWOT analysis. The main strength is the capital and the main opportunity is the ability to enter the market. The best alternative strategy is Strength Opportunities (SO). The strategies are maintain the quality of salak pondoh fruit to be able to retain customers and develop the market, products innovation by utilizing the existing technology, request the government assistance to increase productivity through intensification of salak pondoh field. Identification of internal factors are capital structure, land area, fruit quality, product innovation of planning type, production capacity, planning capability, human resource quality, transportation, and promotion facilities. External factors are market entry ability, technology utilization, customer, government policy, policy of environmental, economic and political, customer, competitor, product substitution, and influence of fuel price increase.
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JAILANI, MUHAMMAD ABDUL AZIS, and ACHMAD ZAINI. "STRATEGI PEMASARAN SALAK PONDOH (Sallacca zalacca) DI DESA PADANG PENGRAPAT KECAMATAN TANAH GROGOT KABUPATEN PASER KALIMANTAN TIMUR (Marketing Strategy of Salak Pondoh (Sallacca zalacca) in Padang Pengrapat Village Tanah Grogot Subdistrict Paser District East Kalimantan)." JURNAL AGRIBISNIS DAN KOMUNIKASI PERTANIAN (Journal of Agribusiness and Agricultural Communication) 1, no. 2 (October 1, 2018): 89. http://dx.doi.org/10.35941/jakp.1.2.2018.1710.89-97.
Full textAbstract:
Marketing strategy is a comprehensive plan, integrated, and unified in the field of marketing, which is obtained from the identification of internal and external factors. The aims of this research were to identify the internal and external factors and to find the alternative of marketing strategy of salak pondoh in Padang Pengrapat Village Tanah Grogot Subdistrict Paser District. Research was held from August to October 2017. The sampling method was census with 30 respondents. Data was analyzed by using SWOT analysis. The main strength is the capital and the main opportunity is the ability to enter the market. The best alternative strategy is Strength Opportunities (SO). The strategies are maintain the quality of salak pondoh fruit to be able to retain customers and develop the market, products innovation by utilizing the existing technology, request the government assistance to increase productivity through intensification of salak pondoh field. Identification of internal factors are capital structure, land area, fruit quality, product innovation of planning type, production capacity, planning capability, human resource quality, transportation, and promotion facilities. External factors are market entry ability, technology utilization, customer, government policy, policy of environmental, economic and political, customer, competitor, product substitution, and influence of fuel price increase.
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Emidio, Juliana, Rafael Lima, Camila Leal, and Grasiele Madrona. "How can mixed integer linear programming assist dairy manufacturers by integrating supply decisions and production planning?" Journal of Agribusiness in Developing and Emerging Economies 11, no. 2 (February 24, 2021): 178–93. http://dx.doi.org/10.1108/jadee-09-2020-0199.
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PurposeThe dairy industry needs to make important decisions regarding its supply chain. In a context with many available suppliers, deciding which of them will be part of the supply chain and deciding when to buy raw milk is key to the supply chain performance. This study aims to propose a mathematical model to support milk supply decisions. In addition to determining which producers should be chosen as suppliers, the model decides on a milk pickup schedule over a planning horizon. The model addresses production decisions, inventory, setup and the use of by-products generated in the raw milk processing.Design/methodology/approachThe model was formulated using mixed integer linear programming, tested with randomly generated instances of various sizes and solved using the Gurobi Solver. Instances were generated using parameters obtained from a company that manufactures dairy products to test the model in a more realistic scenario.FindingsThe results show that the proposed model can be solved with real-world sized instances in short computational times and yielding high quality results. Hence, companies can adopt this model to reduce transportation, production and inventory costs by supporting decision making throughout their supply chains.Originality/valueThe novelty of the proposed model stems from the ability to integrate milk pickup and production planning of dairy products, thus being more comprehensive than the models currently available in the literature. Additionally, the model also considers by-products, which can be used as inputs for other products.
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Redutskiy, Yury. "Pilot Study on the Application of Employee Scheduling for the Problem of Safety Instrumented System Design and Maintenance Planning for Remotely Located Oil and Gas Facilities." Engineering Management in Production and Services 10, no. 4 (December 1, 2018): 55–64. http://dx.doi.org/10.2478/emj-2018-0022.
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Abstract The technology of production, transportation, and processing of oil and gas involves various hazardous processes. To mitigate the risk that these processes pose, the technological solutions work closely with the automated control and safety systems. The design and organisation of maintenance for the automated safety instrumented systems (SIS) have a significant bearing on the overall safety of operations in this industry. Over the past few decades, many hydrocarbon resources have been discovered in unconventional environments, such as remote, offshore, and arctic locations. Transportation of engineering personnel to these remote locations and back, and thereby, the organisation of the shift work poses additional challenges for the petroleum sector. Under such circumstances, the workforce-related costs play a considerable role in the overall cost of the technological solution and thereby the decisions regarding the workforce organisation should be addressed in the framework of evaluating and choosing the appropriate safety measures. That is why the research presented in this paper aims to address the lifecycle of the technological solution integrating the problems of SIS design, maintenance planning, and employee scheduling into a single decision-making framework to optimise the set of technical and organisational safety measures inherent in the SIS. The performance and maintenance of the SIS are described with a Markov model of device failures, repairs and technological incidents occurrence. The employee scheduling part of the mathematical model utilises the set-covering formulation of maintenance crews taking particular trips. A black-box optimisation algorithm is used to find reasonable solutions to the integrated problem of engineering design and workforce planning. The decisions include the choices of the components and structures for the safety system, the facility overhaul frequencies, the maintenance personnel size, as well as the schedules of trips and shifts for the crews.
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Lopez, David, Alicia Watts Hosmer, Timothy Adams, and Elisabeth Morgan. "OIL SPILL REGULATORY SYSTEMS IN MEXICO AND THE UNITED STATES." International Oil Spill Conference Proceedings 1995, no. 1 (February 1, 1995): 791–96. http://dx.doi.org/10.7901/2169-3358-1995-1-791.
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ABSTRACT Mexico and the United States are at a critical point in the process of redefining their trade relationships and integrating their economies. As the North American Free Trade Agreement increases trade, there is likely to be a corresponding rise in oil production, transportation, storage, and use, and with this a greater potential for oil related spill incidents. As a result, there will be a need for regulatory reform and new policy development in oil spill prevention, planning, and response. Both the U.S. and Mexico have established, although somewhat different, regulatory systems that address oil spills, as well as a history of efforts to standardize and coordinate oil spill related activities. However, recent events have underscored the need to evaluate existing systems and look for new ways to develop integrated oil spill control mechanisms. These mechanisms are already evolving; and with the continuing effort to reform regulatory systems and increase coordination, there seems to be considerable promise for the common future of Mexico and the United States on this issue.
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Dzhuguryan, Tygran, and Agnieszka Deja. "Sustainable Waste Management for a City Multifloor Manufacturing Cluster: A Framework for Designing a Smart Supply Chain." Sustainability 13, no. 3 (February 1, 2021): 1540. http://dx.doi.org/10.3390/su13031540.
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This study focuses on integrated sustainable waste management (ISWM) within a city multifloor manufacturing (MFM) cluster. Manufacturing activities in residential areas of the urban environment and the associated generation of municipal production waste (MPW) are serious problems. The primary goal of this study is to design smart supply chain (SSC) scenarios for the shipment of MPW from a city MFM cluster under uncertainty. This paper presents a new model of the finite MPW generation capacity for a city MFM cluster on the basis of an analysis of its finite production capacity using the material flow analysis (MFA) methodology. The proposed model allows us to determine the number of transport fleet units needed for the implementation of various supply chain (SC) scenarios of MPW. To select the best scenario for MPW shipment in real time, the application of SSC and SSC management (SSCM) technologies is proposed. SSCM performance indicators are proposed which allow us to evaluate the efficiency of using vehicles for cluster MPW transportation. The numerical values of the SSCM performance indicators for various options regarding the handling of city MFM buildings using trucks are obtained. These evaluations form the basis for the decision-making and planning associated with the SSCs of MPW.
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Hyla, Paweł, Agnieszka Kosoń-Schab, Janusz Szpytko, and Jarosław Smoczek. "Integrated Supervision for Supporting Control and Proactive Maintenance of Material Handling System." Journal of KONES 26, no. 1 (March 1, 2019): 65–72. http://dx.doi.org/10.2478/kones-2019-0008.
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Abstract Material handling systems, as an important part of different type of manufacturing processes, face the same challenges as manufacturing industries pushed nowadays forward by innovative ideas and technologies to the next level loudly announced as industry 4.0. Development of the next generation of automated manufacturing systems involves advanced approaches to material handling systems design and their close integration with the higher levels of manufacturing and production control and management, e.g. manufacturing execution systems (MES), enterprise resource planning (ERP). In the presence of increasing demands for manufacturing process optimization, the role of supervisory level of material handling systems is much more advanced today, ensuring not only data acquisition, visualization, monitoring, supervisory control, as well as synchronization with the higher control levels (FEM, ERP), but also providing functionality for supporting maintenance and decision-making processes to reduce downtimes, operations and maintenance costs. The article deals with the integration of control and maintenance functions in the hierarchical control system of a crane. The supervisory system for supporting control and proactive maintenance is prototyped at the laboratory overhead travelling crane. The article presents the control-measurement equipment and intelligent software tools implemented in the supervisory control and data acquisition (SCADA) system to aid decision-making process in proactive maintenance. The overview of the main components of the supervisory control and proactive maintenance subsystems is provided, and their respective role in control, supervision, and proactive maintenance is explained. The crane’s supervisory control includes the stereovision-based subsystem applied to identify the crane’s transportation workspace, determine the safety and time-optimal point-to-point trajectory of a payload. The proactive maintenance module consists of the human machine interface (HMI) supporting decision-making process, intelligent tools for upcoming downtime/failure prediction, and the crane's girder inspection using the metal magnetic memory technique.
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Aslam, S. Atif Bilal, Houshmand E. Masoumi, and Syed Arif Hussain. "Urban travel characteristics in relation with jobs-housing balance and accessibility: results of a survey in Lahore, Pakistan." GeoScape 13, no. 1 (June 1, 2019): 31–54. http://dx.doi.org/10.2478/geosc-2019-0003.
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Abstract The circumstances of the relations of jobs-housing balance and urban travel behavior are not clear in emerging and developing countries. There are limited reliable data suitable for testing the hypotheses regarding the associations of the neighborhood-level number of employment opportunities in these countries. This manuscript summarizes the results of an explorative survey undertaken in Lahore, Pakistan to support empirical analyses testing these hypotheses. The survey was undertaken in spring 2018 in six neighborhoods of Lahore and collected the data of 417 respondents. The short questionnaire applied in the survey facilitated generation of 15 individual and household, socioeconomic, and mobility-related variables of different types. Moreover, 9 land use variables as well as jobs-housing ratios were estimated for each respondent within his/her 600-meter street-network pedestrian shed. The produced dataset reveals preliminary descriptive statistics about the relations of employment and travel behavior, particularly commuting, in a less-studied context of Pakistan. It is found that a decent job-housing balance at neighborhood scale alone cannot affect the travel pattern much in the Pakistani context. It needs to be supplemented with other planning interventions, mainly the accessibility to an integrated and efficient mass public transportation system, discouraging private car based policies and promotion of sustainable non-motorized travel modes. In the future, production of disaggregate mobility and land use data will add value to urban transportation research in the Global South.
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Gogrichiani, Georgy V., and Anton N. Lyashenko. "Choosing the best solutions for multimodal oil transportation." Transportation Systems and Technology 7, no. 2 (July 1, 2021): 76–86. http://dx.doi.org/10.17816/transsyst20217276-86.
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Background: to organize multimodal transportation and choose the best route option for fuel delivery, it is necessary to develop an algorithm for choosing the best solution from the considered ones. This is indicated in the Strategy of scientific and Technological Development of the Russian Railways Holding Company for the period up to 2025 and for the future of 2030 ("White Paper", where on pages 25-26 it is said about the need to develop new transport and logistics products and services in global transport chains in the development of multimodal transport and the need to develop and organize new multimodal freight transport). Federal Railway Administrations of the United States, page 127 of the White Paper, points to the need to improve the methodology of integrated multimodal transport planning at the global, national and regional levels, increase the demand for transport and logistics services, and transition to supply chain management.
Aim: to develop a method for multi-criteria rationalization of the choice of multimodal transport routes with the possibility of considering hypothetical options.
Materials and Methods: the fundamental works of leading scientists in the field of improving the efficiency of production in accordance with the needs of the economy in transportation A.V. Annenkov, P.B. Romanova were used. In the field of justification of decisions on cargo terminals, determining the volume of tank farms with the possibility of their expansion O.B. Malikov, V.N. Sapronov. The application of multi-criteria rationalization by comparing the criteria under consideration is given in the work of A.T. Osminin, which developed a scientifically based method aimed at creating analytical and control systems. In the field of risk analysis and assessment of the work of A.G. Kotenko. The works of A.Y. Akhriev, A.B. Egorov, A.A. Kalushin, V.N. Mirushkin, E.V. Pasyunin, and A.V. Savelyev were studied in the field of improving the optimization of the oil transshipment complex, and the works of M.A. Nazarov and O.M. Sergeeva in the segment of logistics of river and sea oil transportation.
Results: it consists in improving the quality of solutions to problems in the transportation of liquid fuel by means of transport in multimodal communication based on the use of the developed method. The set of criteria considered in the method allows you to set and solve transport problems with almost no restrictions on complexity, which in each case allows you to get better results.
Conclusion: Using the method in practice allows not only to objectively find the best solution from the considered ones, but also to study hypothetical transportation schemes with the possible construction of new tracks and their elements, and compare existing and new schemes by a set of criteria, including construction costs and payback time of new tracks, and as a result find the best solution to the task.
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Yan Zhao, Hong-Tao Wang, Wen-Jing Lu, Anders Damgaard, and Thomas H. Christensen. "Life-cycle assessment of the municipal solid waste management system in Hangzhou, China (EASEWASTE)." Waste Management & Research: The Journal for a Sustainable Circular Economy 27, no. 4 (May 26, 2009): 399–406. http://dx.doi.org/10.1177/0734242x09103823.
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With the purpose of assessing the environmental impacts and benefits of the current municipal solid waste management system and two modified systems, EASEWASTE, a life-cycle-based model, was used to evaluate the waste system of Hangzhou city in China. An integrated model was established, including waste generation, collection, transportation, treatment, disposal and accompanying external processes. The results showed that CH4 released from landfilling was the primary pollutant contributing to global warming, and HCl and NH3 from incineration contributed most to acidification. Material recycling and incineration with energy recovery were important because of the induced savings in material production based on virgin materials and in energy production based on coal combustion. A modified system in which waste is transported to the nearest incinerators would be relatively better than the current system, mainly due to the decrease of pollution from landfilled waste and the increase in energy production from waste avoiding energy production by traditional power plants. A ban on free plastic bags for shopping was shown to reduce most environmental impacts due to saved oil resources and other materials used in producing the plastic bags. Sensitivity analysis confirmed the robustness of the results. LCA methodology and a model like EASEWASTE are very suitable for evaluating the overall environmental consequences, and can be used for decision support and strategic planning in developing countries such as China where pollution control has become increasingly important with the rapid increase of waste generation as well as the increasing public awareness of environmental protection.
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Torres Pineda, Israel, Jeong Hwa Cho, Dongkeun Lee, Sang Min Lee, Sangseok Yu, and Young Duk Lee. "Environmental Impact of Fresh Tomato Production in an Urban Rooftop Greenhouse in a Humid Continental Climate in South Korea." Sustainability 12, no. 21 (October 30, 2020): 9029. http://dx.doi.org/10.3390/su12219029.
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In this work, we used life cycle assessment (LCA) to determine the environmental impact of fresh tomato production using a conventional greenhouse (GH) located in a rural area versus a rooftop greenhouse (RTG) located in an urban area in South Korea. The heating and cooling loads were modeled for a period of 12 months using the simulation software TRNSYS. The comparative LCA was then performed for the GH and RTG using these data. It was found that 19% less energy is required for heating an RTG and 38% more energy is used for cooling compared with a GH. Nevertheless, the total energy load reduction for the RTG is 13%. This decreased energy consumption is due to smaller heat losses of the RTG during the colder months. The decreased energy load, combined with the elimination of transportation, storage, and handling losses during the distribution stage, resulted in 43% less global warming potential, 45% less cumulative energy demand and abiotic depletion, 37% less photochemical oxidation and acidification, and 27% less eutrophication for the RTG. Further studies with seasonal yield data, energy sources, and integrated energy flows are expected to provide a better understanding of the advantages of urban farming in this region.
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Moges, Melesse Eshetu, Arve Heistad, and Thorsten Heidorn. "Nutrient Recovery from Anaerobically Treated Blackwater and Improving Its Effluent Quality through Microalgae Biomass Production." Water 12, no. 2 (February 21, 2020): 592. http://dx.doi.org/10.3390/w12020592.
Full textAbstract:
The blackwater stream of domestic wastewater contains energy and the majority of nutrients that can contribute to a circular economy. Hygienically safe and odor-free nutrient solution produced from anaerobically treated source-separated blackwater through an integrated post-treatment unit can be used as a source of liquid fertilizer. However, the high water content in the liquid fertilizer represents a storage or transportation challenge when utilized on agricultural areas, which are often situated far from the urban areas. Integration of microalgae into treated source-separated blackwater (BW) has been shown to effectively assimilate and recover phosphorus (P) and nitrogen (N) in the form of green biomass to be used as slow release biofertilizer and hence close the nutrient loop. With this objective, a lab-scale flat panel photobioreactor was used to cultivate Chlorella sorokiniana strain NIVA CHL 176 in a chemostat mode of operation. The growth of C. sorokiniana on treated source-separated blackwater as a substrate was monitored by measuring dry biomass concentration at a dilution rate of 1.38 d−1, temperature of 37 °C and pH of 7. The results indicate that the N and P recovery rates of C. sorokiniana were 99 mg N L−1d−1 and 8 mg P L−1d−1 for 10% treated BW and reached 213 mg N L−1d−1 and 35 mg P L−1d−1, respectively when using 20% treated BW as a substrate. The corresponding biomass yield on light, N and P on the 20% treated BW substrate were 0.37 g (mol photon)−1, 9.1 g g−1 and 54.1 g g−1, respectively, and up to 99% of N and P were removed from the blackwater.
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Liu, Ziyuan, Yingzhao Wu, Tianle Liu, Xiaoxue Wang, Wenzhuo Li, Ying Yin, and Xiangfei Xiao. "Double Path Optimization of Transport of Industrial Hazardous Waste Based on Green Supply Chain Management." Sustainability 13, no. 9 (May 7, 2021): 5215. http://dx.doi.org/10.3390/su13095215.
Full textAbstract:
With the deepening of the concepts of “sustainable development”, green supply chain management has gradually been attached great importance by the government and enterprises. Based on the green supply chain management method, this paper studies the path optimization of industrial hazardous waste treatment transportation in environmental protection enterprises, aiming at the green purchasing link, in order to realize the management of the green purchasing of environmental enterprises linked to green production under the green supply chain management which integrates green purchasing, hazardous waste storage and green disposal.