Papers by Keyword: Logistic

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Authors: Rajesh Kanna, P. Malliga, K. Sarukesi
Abstract: This paper presents a combination of Genetic Algorithm (GA) and Tuning algorithm, for optimizing Three Dimensional (3D) arbitrary sized heterogeneous box packing into a container, by considering practical constraints facing in the logistics industries. Objective of this research is to pack four different shapes of boxes of varying sizes into a container of standard dimension, without violating various practical constraints. Inorder to obtain a real time feasible packing pattern, Genetic Algorithm is developed to maximize the container volume utilization and inturn profit [9]. It significantly improves the search efficiency with less computational time and loads most of the heterogeneous boxes into the container by considering its optimal position and orientation. Tuning algorithm is used to decode the genetic output into user understandable sequential packing pattern and to fill the left-out empty space inside the container. In general, GA in conjunction with the tuning algorithm is substantially better than those obtained by applying heuristics to the bin packing directly.
Authors: Kun He, Wen Qi Huang
Abstract: This paper presents a Fit Degree based Two-step Lookahead algorithm (FDTL) for the NP hard container loading problem. Several evaluation criteria, the fit degrees, are defined to construct different initial solutions as well as to explore different portions of the search space. Then a two-step lookahead tree search procedure is incorporated for the sufficient search such that the algorithm could find better layouts compared to a one-step lookahead tree search procedure. FDTL is tested on two sets of typical instances: 800 instances as proposed by Bischoff and Ratcliff (1995), and 15 instances as proposed by Loh and Nee (1992). Experiments show that this new algorithm improves among the known algorithms on the space utilization.
Authors: Yu Quan Du, Xi Feng Lu, Ya Hui Li, Ya Xu
Abstract: The automobile manufacturer has been regarded as a great consumer of energy resources and an important origin of carbon emission. Hence, the research on the control strategies of carbon emission is of significant importance to help to save energy and mitigate carbon emission. This paper proposes a logistics and manufacturing management framework of the automobile manufacturer from the viewpoint of energy conservation and emission reduction. Firstly, we ascertain the carbon emission boundary based on three management phases of the automobile manufacturer: the process of the logistics of raw materials and components, the manufacturing process and the waste disposal. Then, based on the analysis of details of energy consumption and carbon emission, we identify several important management problems confronting the automobile manufacturer. Furthermore, we propose some planning and scheduling models towards these management problems by balancing the economic and environmental considerations.
Authors: Nikoleta Husáková
Abstract: Solution of problems in the field of ecology and environment has an important place at the state level, but also at the level of civil initiatives and individuals. It is in the result of increasing limitedness of natural resources and environmental consciousness. Eco-logistics is important effective tool which is the object of study, discussions of many experts in logistics, because it provides a wide scope of application. The main mission of eco-logistics is underling the importance of production processes, services and other activities connected with logistics impact on the environment. Suitable way of eco-logistics implementation creates conditions for logistics costs reduction and also for natural resources and environment saving. The paper presents new approach to eco-logistics and its new definition.
Authors: Qian Wang, Jack Yi Tan
Abstract: An automated warehousing system often consists of storage modules, storage and retrieval mechanism, lifting equipment and conveyor systems. These facilities are used to overcome some disadvantages of manually operated warehousing systems which often lead to a high frequency of human errors, high labour cost and low efficiency. The usage of these automated facilities may also be helpful to maximise utilisation of shop floor space and improve efficiency of warehousing operations. On the other hand, at this age of information technology that the access to the internet is just at the fingertip, it has been seen a rising trend for online shopping in the past decade. Thus, manufacturers, suppliers or distributors have been seeking for even more efficient and effective new methods to store and distribute their goods. A number of studies through a literature review suggest that future generation warehouses may be designed and implemented as more centralised and distributed warehousing systems in which customers place their orders on-line and goods will then be dispatched directly to their door steps from these centralised distribution centres. This paper presents a proposal for designing and implementing future generation warehousing systems using fast-growing IT technologies such as radio frequency identification (RFID), wireless sensors and networks. The overall purpose of this study is to develop a conceptual design of an integrated system for future generation automated warehouses by incorporating a new design of storage and retrieval modules with the applications of these IT technologies used for automation activities. The presentation of this paper only highlights the part of this work including a design of a core mechanism for automated storage module namely the cantilever storage racks, which have the feature of scalability and reconfigurability.
Authors: Zi Qi Wang, Wen Qiang Tian, Jun Wang
Abstract: A low-carbon economy reach is a win-win configuration of a kind of economy that zoology and economy coordinate development. This paper researches on the low carbon economy development based on the view of the logistics industry, therefore the paper discusses two respects: first, interaction mechanisms between the logistics and ecological environment; second, feedback relationship between the logistics and the economic development. However, the traditional logistics can only make economic development, but not be able to achieve environmental protection. Finally, it comes to the necessity of the development of the low-carbon logistics, in addition puts forward the methods and measures for the low-carbon logistics.
Authors: Mei Xiao, Zhen Rong Zhang, Zhi Hui Ge
Abstract: we have presented the main optimization scheduling issues in logistics, including the vehicle scheduling problem (VSP), the goods loading problem, the location problem, the stochastic loader problem and the logistics enterprise transportation cost problem. Some new research focuses such as third party logistics (TPL), cloud logistics and cold-chain logistics have also been discussed.
Authors: Wei Li, Chong Chen, Jing Du, Ling Xu
Abstract: Strategic environmental assessment (SEA) plays a role before the logistics planning carrying out, which can effectively avoid environmental problems caused by strategic errors. This paper adopts system dynamic software to set up SD model, and takes Dalians logistics planning as a case. Six alternative scenarios based on the plannings goal and direction are simulated. It is found that the integrated scenario turns out to be the best scenario, and this work can provide scientific decision basis for governments.
Authors: Angéla Rinkács, András Gyimesi, Gábor Bohács
Abstract: Application of agent based approaches is frequent in systems with artificial intelligence. This method has been used in simulations as well, however application in this field is rather novel. The paper surveys formation possibilities of agent based structures in the simulation of an example material flow systems. Further, considerations are also presented, how these models can be made adaptive, which makes them capable of continuously modify their features to the modeled physical system. Finally a framework for a proposed modeling problem is introduced.
Authors: Qian Lan
Abstract: Although the logistics of Beibu gulf (Guangxi) is still in the primary stage such as the small-scaled logistics enterprises, low service level, weak logistics demand, sluggish infrastructure, and the chaotic logistics market, etc, it faces a series of development opportunities, its second-mover advantage is obvious and the growth potential is great. As long as we straighten out the management mechanism, overcome the bottleneck of the system, position accurately, analyze rationally, distribute reasonably, build logistics infrastructure according to the situation of the economic zone, pay great attention to the personnel training and learn from others’ experience, logistics can become a pillar industry in Beibu gulf economic zone.
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