WorldWideScience

Sample records for benchmarking transportation logistics

  1. Implementation of Benchmarking Transportation Logistics Practices and Future Benchmarking Organizations

    International Nuclear Information System (INIS)

    The purpose of the Office of Civilian Radioactive Waste Management's (OCRWM) Logistics Benchmarking Project is to identify established government and industry practices for the safe transportation of hazardous materials which can serve as a yardstick for design and operation of OCRWM's national transportation system for shipping spent nuclear fuel and high-level radioactive waste to the proposed repository at Yucca Mountain, Nevada. The project will present logistics and transportation practices and develop implementation recommendations for adaptation by the national transportation system. This paper will describe the process used to perform the initial benchmarking study, highlight interim findings, and explain how these findings are being implemented. It will also provide an overview of the next phase of benchmarking studies. The benchmarking effort will remain a high-priority activity throughout the planning and operational phases of the transportation system. The initial phase of the project focused on government transportation programs to identify those practices which are most clearly applicable to OCRWM. These Federal programs have decades of safe transportation experience, strive for excellence in operations, and implement effective stakeholder involvement, all of which parallel OCRWM's transportation mission and vision. The initial benchmarking project focused on four business processes that are critical to OCRWM's mission success, and can be incorporated into OCRWM planning and preparation in the near term. The processes examined were: transportation business model, contract management/out-sourcing, stakeholder relations, and contingency planning. More recently, OCRWM examined logistics operations of AREVA NC's Business Unit Logistics in France. The next phase of benchmarking will focus on integrated domestic and international commercial radioactive logistic operations. The prospective companies represent large scale shippers and have vast experience in

  2. Benchmarking transportation logistics practices for effective system planning

    International Nuclear Information System (INIS)

    This paper presents preliminary findings of an Office of Civilian Radioactive Waste Management (OCRWM) benchmarking project to identify best practices for logistics enterprises. The results will help OCRWM's Office of Logistics Management (OLM) design and implement a system to move spent nuclear fuel (SNF) and high-level radioactive waste (HLW) to the Yucca Mountain repository for disposal when that facility is licensed and built. This report suggests topics for additional study. The project team looked at three Federal radioactive material logistics operations that are widely viewed to be successful: (1) the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico; (2) the Naval Nuclear Propulsion Program (NNPP); and (3) domestic and foreign research reactor (FRR) SNF acceptance programs. (authors)

  3. Logistic innovations in transport

    Directory of Open Access Journals (Sweden)

    Mirosław Antonowicz

    2014-03-01

    Full Text Available Introduction: The article discusses the issue of logistic innovations in transport. The essentials of logistic innovations in transport together with some examples of specific innovations are presented. The role of the client's needs in transport innovations is indicated. The most vital postulates affecting the innovativeness of shipping companies and derived from the author's experience as well as scholarly publications, are time, safety, reliability as well as comprehensiveness of service offer. Following the analysis of the issue, and on the grounds of Kaizen's and Lean's method, the concept of continuous innovations is suggested as very useful for the development of transport. The potential of clusters as the source of logistic innovations in transport is emphasised. Methods: The discussion of the issue was preceded by the author's analysis of written sources on innovativeness, the evaluation of ratings of innovativeness as well as the analysis of rewarded innovative solutions in transport subsequent to the businesses participation in the programme of innovative solutions in transport. The role of innovation practical business operations is argued following the analysis of some strategic documents such as: 2011 White Paper and the Strategy for the Development of Transport by 2020 adopted by the Polish government in 2013. Aim: The aim of the article is to present the role and significance of the issue of logistic innovations in transport and to cite instances of practical solutions implemented by shipping companies, the solutions which resulted in measurable effects. Following the author's observation of the instances of innovative solutions as well as his analysis of the ratings of innovativeness, the article aims to present the conclusions as for the specific kinds of activities which are indispensable to foster innovativeness in transport. Conclusions: The conclusions derived from the author's analyses and observations show that logistic

  4. Research on the Logistics Supply Chain in Port Logistics Transportation

    OpenAIRE

    Wang Yan-liang

    2013-01-01

    The aim of this study is to improve and increase the logistics system effectiveness and to solve the problem of optimal movement of different flows. Logistics transport carrying the world on material resources transfer exchange important mission and economic development and our lives are closely linked, logistics chain logistics transport occupies an important position and in the e logistics chain in port logistics has play a decisive role. For many coastal countries port logistics is the eco...

  5. Research on the Logistics Supply Chain in Port Logistics Transportation

    Directory of Open Access Journals (Sweden)

    Wang Yan-liang

    2013-11-01

    Full Text Available The aim of this study is to improve and increase the logistics system effectiveness and to solve the problem of optimal movement of different flows. Logistics transport carrying the world on material resources transfer exchange important mission and economic development and our lives are closely linked, logistics chain logistics transport occupies an important position and in the e logistics chain in port logistics has play a decisive role. For many coastal countries port logistics is the economic lifeline of the country, on China's economic development role as important, port logistics transport bear the material exchange with the external communication of important role, so the Chinese port logistics transportation research, clear port logistics transportation, current situation, find the existing problems in the light of the problem, to find a suitable method for solving has great realistic meaning. To promote logistics development, improve the logistics supply chain system has play an important role in this filed.

  6. Benchmarking & European Sustainable Transport Policies

    DEFF Research Database (Denmark)

    Gudmundsson, H.

    2003-01-01

    support Sustainable European Transport Policies. The key message is that transport benchmarking has not yet been developed to cope with the challenges of this task. Rather than backing down completely, the paper suggests some critical conditions for applying and adopting benchmarking for this purpose. One...... way forward is to ensure a higher level of environmental integration in transport policy benchmarking. To this effect the paper will discuss the possible role of the socalled Transport and Environment Reporting Mechanism developed by the European Environment Agency. The paper provides an independent...

  7. OWI transportation/logistics program

    International Nuclear Information System (INIS)

    In development of a comprehensive plan to assure the availability of a transport system by 1985 capable of moving commercial radioactive wastes to federal waste repositories, a series of concerns were identified as having the potential to interfere seriously with the overall objective. These are tabulated and briefly reviewed. Activities to counteract these concerns were formulated. Logistics models were then developed. The spent fuel logistics model is described

  8. Benchmarking and Sustainable Transport Policy

    DEFF Research Database (Denmark)

    Gudmundsson, Henrik; Wyatt, Andrew; Gordon, Lucy

    2004-01-01

    Order to learn from the best. In 2000 the European Commission initiated research to explore benchmarking as a tool to promote policies for ‘sustainable transport’. This paper reports findings and recommendations on how to address this challenge. The findings suggest that benchmarking is a valuable...... tool that may indeed help to move forward the transport policy agenda. However, there are major conditions and limitations. First of all it is not always so straightforward to delimit, measure and compare transport services in order to establish a clear benchmark. Secondly ‘sustainable transport......’ evokes a broad range of concerns that are hard to address fully at the level of specific practices. Thirdly policies are not directly comparable across space and context. For these reasons attempting to benchmark ‘sustainable transport policies’ against one another would be a highly complex task, which...

  9. 3-D neutron transport benchmarks

    International Nuclear Information System (INIS)

    A set of 3-D neutron transport benchmark problems proposed by the Osaka University to NEACRP in 1988 has been calculated by many participants and the corresponding results are summarized in this report. The results of Keff, control rod worth and region-averaged fluxes for the four proposed core models, calculated by using various 3-D transport codes are compared and discussed. The calculational methods used were: Monte Carlo, Discrete Ordinates (Sn), Spherical Harmonics (Pn), Nodal Transport and others. The solutions of the four core models are quite useful as benchmarks for checking the validity of 3-D neutron transport codes

  10. EFFECTIVENESS OF QUALITY LOGISTICS TRANSPORT SERVICES

    Directory of Open Access Journals (Sweden)

    В.І. ЩЕЛКУНОВ

    2011-12-01

    Full Text Available  Based on the study of economic processes of the transport industry identified key approaches of quality management logistics transport services and created a mechanism to ensure effectiveness of implementation of logistics quality management systems.

  11. Performance Benchmarking Student Transportation Operations.

    Science.gov (United States)

    Forsyth, Andy

    2001-01-01

    Student transportation complexities make evaluating a program's cost and quality very difficult. The first step in measuring performance is defining an operation's functional components: level of service delivery, units of service, and cost of services. Other considerations include routing, logistics, and fleet maintenance and support operations.…

  12. The transport performance evaluation system building of logistics enterprises

    Directory of Open Access Journals (Sweden)

    Xueli Wang

    2013-09-01

    Full Text Available Purpose: modern logistics has a significant role in today’s society, logistics cost accounts for 35% to 50% of total logistics costs, so it’s great significance to improve the transport performance of logistics enterprises. Design/methodology/approach: the authors select the transportation performance evaluation index of logistics enterprise, with the aid of the fuzzy theory and analytic hierarchy process (AHP, adopt the combining method of quantitative and qualitative analysis, construct the transport performance evaluation system of logistics enterprises. Findings: the choice of transport performance evaluation indicator system for Logistics enterprise is in a state of "high", which indicates the indicator selection is reasonable. Research limitations/implications: the selected indicators with experts’ subjective factors can not accurately quantify. Practical implications: it has important practical significance to promote the development of modern logistics enterprises and save social cost. Originality/value: current research methods mainly include the PDCA cycle model, key performance indicators (KPI and benchmarking method, principal component analysis method, etc. The authors for the first time with the aid of fuzzy theory and analytic hierarchy process (AHP, adopt the combining method of quantitative and qualitative research on transport performance problems.

  13. Logistics and Transport - a conceptual model

    DEFF Research Database (Denmark)

    Jespersen, Per Homann; Drewes, Lise

    2004-01-01

    This paper describes how the freight transport sector is influenced by logistical principles of production and distribution. It introduces new ways of understanding freight transport as an integrated part of the changing trends of mobility. By introducing a conceptual model for understanding the...... interaction between logistics and transport, it points at ways to over-come inherent methodological difficulties when studying this relation...

  14. A Framework for Urban Transport Benchmarking

    OpenAIRE

    Henning, Theuns; Essakali, Mohammed Dalil; Oh, Jung Eun

    2011-01-01

    This report summarizes the findings of a study aimed at exploring key elements of a benchmarking framework for urban transport. Unlike many industries where benchmarking has proven to be successful and straightforward, the multitude of the actors and interactions involved in urban transport systems may make benchmarking a complex endeavor. It was therefore important to analyze what has bee...

  15. Transport Efficiency Through Logistics Development Policy Study

    OpenAIRE

    Asian Development Bank

    2012-01-01

    Logistics includes material flow, information flow, and financial flow between the point of supply and the point of consumption, with transport serving as its core. With the rapidly evolving economy of the People’s Republic of China, there is a need for a modern transport and logistics system that is efficient, safe, sustainable, and meets customers’ requirements. This policy brief describes the current state of transport and logistics development in the PRC. It provides policy recommendation...

  16. Transport logistical effects of new traffic infrastructures

    DEFF Research Database (Denmark)

    Hansen, Leif Gjesing

    2004-01-01

    The article examines the consequences for transport and logistics reorganisation following the establishment of fixed links across Great belt and Oresund in Denmark......The article examines the consequences for transport and logistics reorganisation following the establishment of fixed links across Great belt and Oresund in Denmark...

  17. Economical Logistics Transportation planning Case

    Institute of Scientific and Technical Information of China (English)

    王蓉

    2014-01-01

    Transportation is one of the most important nodes of supply chain. Economical transportation planning enables enterprises to reduce cost and perhaps optimize supply chain. This report clarifies the optimization of the transport node with a door-door project.

  18. Logistics chains in freight transport modelling

    OpenAIRE

    Davydenko, I.

    2015-01-01

    The research presented in this PhD thesis has been motivated by the fact that the Netherlands, and the Randstad region in particular, are affected by the large transport flows and extensive operations of the logistics sector. These operations create welfare for those people who work in the sector, who own the companies, and for the Dutch and European societies as the whole. The strong transport and logistics sector has also negative impact on the public infrastructure, air pollution, greenhou...

  19. Worldwide spent fuel transportation logistics

    International Nuclear Information System (INIS)

    This paper presents an overview of the worldwide transportation requirements for spent fuel. Included are estimates of numbers and types of shipments by mode and cask type for 1985 and the year 2000. In addition, projected capital and transportation costs are presented. For the year 1977 and prior years inclusive, there is a cumulative worldwide requirement for approximately 300 MTU of spent fuel storage at away-from-reactor (AFR) facilities. The cumulative requirements for years through 1985 are projected to be nearly 10,000 MTU, and for the years through 2000 the requirements are conservatively expected to exceed 60,000 MTU. These AFR requirements may be related directly to spent fuel transportation requirements. In total nearly 77,000 total cask shipments of spent fuel will be required between 1977 and 2000. These shipments will include truck, rail, and intermodal moves with many ocean and coastal water shipments. A limited number of shipments by air may also occur. The US fraction of these is expected to include 39,000 truck shipments and 14,000 rail shipments. European shipments to regional facilities are expected to be primarily by rail or water mode and are projected to account for 16,000 moves. Pacific basin shipments will account for 4500 moves. The remaining are from other regions. Over 400 casks will be needed to meet the transportation demands. Capital investment is expected to reach $800,000,000 in 1977 dollars. Cumulative transport costs will be a staggering $4.4 billion dollars

  20. COGEMA LOGISTICS' global information policy for transports

    International Nuclear Information System (INIS)

    In addition to strictly enforcing internationally accepted and regularly reviewed safety rules as well as ensuring the smooth operation of their international nuclear transportation, COGEMA LOGISTICS and industrial partners involved in the international transportation of nuclear materials wish to increase the general understanding of these operations. COGEMA LOGISTICS, as well as its partners and customers, has been listening around the world to understand local concerns and has discussed and explained aspects of nuclear transportation with governments' Officials, Representatives of regional organisations, associations members and media representatives. COGEMA LOGISTICS will keep making every effort to inform whoever must be on our transport operations. We consider that we have a responsibility to make the relevant information accessible and are continually assessing the most appropriate way to achieve this. Transparency remains the mainstay of our information policy. (author)

  1. Actualities in logistics and transport

    OpenAIRE

    Simona Dordea; Liliana Nicodim

    2008-01-01

    The increasing flow of commodities represents a fundamental component of the actual changes within the economic systems at global, regional and local frameworks. It must be pointed that these changes have not a quantity substance only, but at the same time, a structural and an operational one. The structural changes refer in the essence to the production systems and the operational ones to the transport systems and, compulsory, to the distribution. So, being given this situation, the essentia...

  2. PNNL Coal Gasifier Transportation Logistics

    Energy Technology Data Exchange (ETDEWEB)

    Reid, Douglas J.; Guzman, Anthony D.

    2011-04-13

    This report provides Pacific Northwest National laboratory (PNNL) craftspeople with the necessary information and suggested configurations to transport PNNL’s coal gasifier from its current location at the InEnTec facility in Richland, Washington, to PNNL’s Laboratory Support Warehouse (LSW) for short-term storage. A method of securing the gasifier equipment is provided that complies with the tie-down requirements of the Federal Motor Carrier Safety Administration’s Cargo Securement Rules.

  3. Marketing: MSc in logistics and transportation

    OpenAIRE

    Jenkins, Mark

    1983-01-01

    The objective of this course is to introduce the basic concepts of marketing to students undertaking an MSc in Transportation and Logistics. This module will take a strategic view of marketing in that it will develop ideas for achieving sustainable competitive advantage.

  4. Logistics Chains in Freight Transport Modelling

    NARCIS (Netherlands)

    Davydenko, I.Y.

    2015-01-01

    The flow of trade is not equal to transport flows, mainly due to the fact that warehouses and distribution facilities are used as intermediary stops on the way from production locations to the points of consumption or further rework of goods. This thesis proposes a logistics chain model, which estim

  5. Transportation Technology: Rail Transport and Logistics

    Science.gov (United States)

    Lang, Aaron B.

    2011-01-01

    Transportation can simply be defined as the movement of goods, services, and people from one location to another. Without an efficient means to transport goods from place to place, the economy would be nothing like it is today. Throughout the history of the United States, American railroads have paved the way toward creating a nation of great…

  6. Numerical methods: Analytical benchmarking in transport theory

    International Nuclear Information System (INIS)

    Numerical methods applied to reactor technology have reached a high degree of maturity. Certainly one- and two-dimensional neutron transport calculations have become routine, with several programs available on personal computer and the most widely used programs adapted to workstation and minicomputer computational environments. With the introduction of massive parallelism and as experience with multitasking increases, even more improvement in the development of transport algorithms can be expected. Benchmarking an algorithm is usually not a very pleasant experience for the code developer. Proper algorithmic verification by benchmarking involves the following considerations: (1) conservation of particles, (2) confirmation of intuitive physical behavior, and (3) reproduction of analytical benchmark results. By using today's computational advantages, new basic numerical methods have been developed that allow a wider class of benchmark problems to be considered

  7. Technological Support for Logistics Transportation Systems

    Science.gov (United States)

    Bujak, Andrzej; Śliwa, Zdzisław; Gębczyńska, Alicja

    The modern world is changing introducing robots, remotely controlled vehicles and other crewless means of transportation to reduce people's mistakes, as the main cause of incidents and crashes during traffic. New technologies are supporting operators and drivers, and according to some studies they can even replace them. Such programs as: AHS, UAH, IVBSS or MTVR are under development to improve traffic flow and its safety, to reduce traffic hazards and crashes. It is necessary to analyze such concepts and implement them boldly, including Polish logistics' companies, new programs, highways' system etc., as they will be applied in the future, so it is necessary to prepare logistics infrastructure ahead of time in order to capitalize on these improvements. The problem is quite urgent as transportation in the country must not be outdated to meet clients' expectations and to keep pace with competing foreign companies.

  8. Impacts of infrastructure investment on logistics and transport

    DEFF Research Database (Denmark)

    Hansen, Leif Gjesing

    2005-01-01

    The article investigates the impacts of major traffic infrastructures on firms' organisation of logistics and transport.......The article investigates the impacts of major traffic infrastructures on firms' organisation of logistics and transport....

  9. The transport performance evaluation system building of logistics enterprises

    OpenAIRE

    Xueli Wang; Yu Chen; Li Zhang

    2013-01-01

    Purpose: modern logistics has a significant role in today’s society, logistics cost accounts for 35% to 50% of total logistics costs, so it’s great significance to improve the transport performance of logistics enterprises. Design/methodology/approach: the authors select the transportation performance evaluation index of logistics enterprise, with the aid of the fuzzy theory and analytic hierarchy process (AHP), adopt the combining method of quantitative and qualitative analysis, construct th...

  10. AGENT code - neutron transport benchmark examples

    International Nuclear Information System (INIS)

    The paper focuses on description of representative benchmark problems to demonstrate the versatility and accuracy of the AGENT (Arbitrary Geometry Neutron Transport) code. AGENT couples the method of characteristics and R-functions allowing true modeling of complex geometries. AGENT is optimized for robustness, accuracy, and computational efficiency for 2-D assembly configurations. The robustness of R-function based geometry generator is achieved through the hierarchical union of the simple primitives into more complex shapes. The accuracy is comparable to Monte Carlo codes and is obtained by following neutron propagation through true geometries. The computational efficiency is maintained through a set of acceleration techniques introduced in all important calculation levels. The selected assembly benchmark problems discussed in this paper are: the complex hexagonal modular high-temperature gas-cooled reactor, the Purdue University reactor and the well known C5G7 benchmark model. (author)

  11. Transport, logistics and packaging of ITER components

    International Nuclear Information System (INIS)

    Cadarache, the European site for ITER, is located at around 50km as the crow flies from the sea. The feasibility of the transport of large and heavy ITER components has thus been thoroughly studied. These studies have covered the following items: - possible itineraries between the most convenient harbour (Fos) and Cadarache; - packaging (in particular for the largest and heaviest components); - means of transport (two types of trailers allowing to avoid lifting and load transfers); - logistics (analysis of transfer kinematics, including temporary storage); - administrative procedures and planning for the road adaptation, taking benefit of the recent successful implementation in the south-west of France of an itinerary for the Airbus A380 components. These studies, performed between 2001 and 2003, led to a viable solution, with a reasonable cost, fully supported by the French authorities. The planning necessary to implement the road modifications is also fully compatible with the expected dates of ITER components delivery

  12. MARKETING AND LOGISTICS INFRASTRUCTURE DEVELOPMENT OF THE TRANSPORT SERVICES MARKET

    Directory of Open Access Journals (Sweden)

    V. I. Kopytko

    2009-02-01

    Full Text Available Taking into account the modern trends of world economy development, the opportunities of increasing the competitiveness of the Ukrainian transport system on the base of marketing-logistical providing the development of infrastructure of transport services market are presented. The analysis of marketing-logistical approaches of estimation of the efficiency of operation of transport infrastructure objects is performed. The condition of theoretical and practical aspects of the transport services market is elucidated, the examples of logistical concepts are given, considering the work experience of transport enterprises, the ways of formation of regional transport-logistical associations are offered.

  13. Logistics Cost Modeling in Strategic Benchmarking Project : cases: CEL Consulting & Cement Group A

    OpenAIRE

    Nguyen Cong Minh, Vu

    2010-01-01

    This thesis deals with logistics cost modeling for a benchmarking project as consulting service from CEL Consulting for Cement Group A. The project aims at providing flows and cost comparison of bagged cement of all cement players to relevant markets in Indonesia. The results of the project yielded strategic elements for Cement Group A in planning their penetration strategy with new investments. Due to the specific needs, Cement Group A requested a flexible costing approach taking into ...

  14. E-LOGISTICS – MULTIMODAL TRANSPORT MANAGEMENT

    Directory of Open Access Journals (Sweden)

    Marcel LITRA

    2013-05-01

    Full Text Available The paper presents the role and the importance of logistics for products and services inorder to obtain the competitive advantage. After a short presentation of logistics evolution, we moveon to defining the logistics concept, respectively integrated logistics. The analysis of the logisticsactivities is based on the total cost concept and it has as a purpose the efficient and effectivemanagement of the physical flows of raw materials, materials and finite products, and of theinternational flows. The competitive advantage is ensured through the harmonization of the logisticsfunction with the other functions of the company and through the integration of the logistics chain ofall upstream and downstream organizations in order to ensure a high level of consumer service ateconomical costs under the farm of supply chain management. In the end we present the maintendencies in the evolution of logistics in the Romanian firms under the circumstances of the increaseof their international dimension.

  15. A Uranium Bioremediation Reactive Transport Benchmark

    Energy Technology Data Exchange (ETDEWEB)

    Yabusaki, Steven B.; Sengor, Sevinc; Fang, Yilin

    2015-06-01

    A reactive transport benchmark problem set has been developed based on in situ uranium bio-immobilization experiments that have been performed at a former uranium mill tailings site in Rifle, Colorado, USA. Acetate-amended groundwater stimulates indigenous microorganisms to catalyze the reduction of U(VI) to a sparingly soluble U(IV) mineral. The interplay between the flow, acetate loading periods and rates, microbially-mediated and geochemical reactions leads to dynamic behavior in metal- and sulfate-reducing bacteria, pH, alkalinity, and reactive mineral surfaces. The benchmark is based on an 8.5 m long one-dimensional model domain with constant saturated flow and uniform porosity. The 159-day simulation introduces acetate and bromide through the upgradient boundary in 14-day and 85-day pulses separated by a 10 day interruption. Acetate loading is tripled during the second pulse, which is followed by a 50 day recovery period. Terminal electron accepting processes for goethite, phyllosilicate Fe(III), U(VI), and sulfate are modeled using Monod-type rate laws. Major ion geochemistry modeled includes mineral reactions, as well as aqueous and surface complexation reactions for UO2++, Fe++, and H+. In addition to the dynamics imparted by the transport of the acetate pulses, U(VI) behavior involves the interplay between bioreduction, which is dependent on acetate availability, and speciation-controlled surface complexation, which is dependent on pH, alkalinity and available surface complexation sites. The general difficulty of this benchmark is the large number of reactions (74), multiple rate law formulations, a multisite uranium surface complexation model, and the strong interdependency and sensitivity of the reaction processes. Results are presented for three simulators: HYDROGEOCHEM, PHT3D, and PHREEQC.

  16. Development of Intermodal Transport and Logistics in Serbia

    Directory of Open Access Journals (Sweden)

    Snežana Tadić

    2012-12-01

    Full Text Available Freight transport and logistics play a key role in economic and social terms by ensuring the competitiveness, economic growth and employment. Intermodal transport has received an increased žattention due to problems of road congestion, environmental concerns and traffic’ safety. Strategic importance of speed, reliability and flexibility in the supply chain is forcing companies to re-examine traditional logistics services. As a result, interest in addressing the problem of intermodal transport and logistics is growing. In order to improve efficiency and sustainability of freight transport in Europe, the European Commission has launched a series of initiatives, projects and has defined the basic directions of development of intermodal transport and logistics. The paper presents the recommendations and measures for the further development of intermodal transport and logistics in Serbia.

  17. Guatemala : Elements of a Transport and Logistics Strategy

    OpenAIRE

    Dumitrescu, Anca C.; Smith, Graham; Osborne, Theresa K.

    2015-01-01

    This document has been produced by the World Bank to support the Government of Guatemala as it improves its transport and logistics sector management in pursuit of enhanced country competitiveness. It identifies and defines elements of a National Transport and Logistics Strategy (NTLS) through the development of a methodology which analyzes bottlenecks and related costs along the main logi...

  18. WHY DO LOGISTICS AND TRANSPORT MATTER FOR DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Nedelescu-Ionescu Daniela

    2014-07-01

    Full Text Available In face of the challenges of global competition, business firms are concentrating more on the needs of customers and seeking ways to reduce costs, improve quality and meet the ever-rising expectation of their customers. To these ends, many of them have identified logistics as an area to build cost and service advantages. Logistical activities have always been vital to organizations, and therefore business logistics and supply chain management represents a synthesis of many concepts, principles, and methods from the more traditional areas of production, purchasing, transportation, economics, as well as from the disciplines of applied mathematics, and organizational behaviour. It concentrates on important activities of management such as planning, organizing, and controlling, and also on a three-way relationship of related transportation, inventory, and location strategies, which are at the heart of good logistics planning and decision making. Selecting a good logistics strategy may yield a competitive advantage. Transportation provides the flow of materials, products and persons between production facilities, warehouses, distribution centers, terminals and customer locations. The progress in techniques and management principles improves the moving load, delivery speed, service quality, operation costs, the usage of facilities and energy saving. A strong system needs a clear frame of logistics and a proper transport implements and techniques to link the producing procedures. The transportation takes a crucial part in the management of logistic. Without well-developed transportation systems, logistics could not bring its advantages into full play. A good transport system in logistics activities could provide better logistics efficiency, reduce operation cost, and promote service quality. The process determines the efficiency of moving products and energy saving. Improvements in transportation and logistics make valuable contribution to production

  19. Matrix logistics indicators assessment of distributed transport hub

    OpenAIRE

    Igor Arefyev

    2014-01-01

    Background: The paper is devoted to the distributed transport hub substantiation and assessment. The paper  was an example of the technique and form an array of logistical factors as variables that determine this condition. Experience in organizing multimodal transport showed that the "bottleneck" of transport logistics are items of cargo handling ports, terminals, freight stations and warehouses. At the core of the solution of these problems is the problem of estimating the va...

  20. The Design of Logistics Information Matching Platform for Highway Transportation

    Science.gov (United States)

    Chen, Daqiang; Zhu, Xiaoxiao; Tong, Bing; Shen, Xiahong; Feng, Tao

    The development status of logistics in the financial crisis requires the shippers and carriers' overall goal focus on cost reduction. This paper firstly analyzes the problem of information mismatch between shipper and carrier in nowadays, and describes the shippers and carriers' demand for information platform. Then based on requirement investigation and questionnaire statistics, the specific demands for logistics information matching platform are analyzed. Finally, logistics information matching platform system for highway transportation is designed.

  1. A heterogeneous analytical benchmark for particle transport methods development

    International Nuclear Information System (INIS)

    A heterogeneous analytical benchmark has been designed to provide a quality control measure for large-scale neutral particle computational software. Assurance that particle transport methods are efficiently implemented and that current codes are adequately maintained for reactor and weapons applications is a major task facing today's transport code developers. An analytical benchmark, as used here, refers to a highly accurate evaluation of an analytical solution to the neutral particle transport equation. Because of the requirement of an analytical solution, however, only relatively limited transport scenarios can be treated. To some this may seem to be a major disadvantage of analytical benchmarks. However, to the code developer, simplicity by no means diminishes the usefulness of these benchmarks since comprehensive transport codes must perform adequately for simple as well as comprehensive transport scenarios

  2. Intensification of Development of Mixed Transportation of Freight in Ukraine through Formation of the Network of Transportation and Logistic Centres and Transportation and Logistic Clusters

    Directory of Open Access Journals (Sweden)

    Karpenko Oksana O.

    2013-11-01

    Full Text Available Development of mixed transportation is a prospective direction of development of the transportation system of Ukraine. The article analyses the modern state of development of mixed transportation of freight in Ukraine. The most popular types of combined transportation (refers to multi-modal are container and contrailer trains, which are formed both in Ukraine (Viking and Yaroslav and in other countries, first of all, Belarus (Zubr. One of the reasons of underdevelopment of mixed transportation of freight in Ukraine is absence of a developed network of transportation and logistic centres. The article offers to form a network of transportation and logistic centres in Ukraine as a way of intensification of development of mixed transportations of freight, since they facilitate co-ordination of use of various types of transport and support integrated management of material flows. Transportation and logistic centres should become a start-up complex, around which transportation and logistic clusters would be gradually formed. Transportation and logistic clusters is a new efficient form of network organisation and management of transportation and logistic services and they also ensure growth of efficiency of use of the regional transportation and logistic potential of Ukraine. The article shows prospective supporting transportation and logistic centres and centres of formation of transportation and logistic clusters in the territory of Ukraine. Formation of efficient transportation and logistic system of Ukraine on the basis of a network of transportation and logistic clusters would facilitate entering of Ukraine into the world transportation environment and would allow acceleration of introduction of efficient logistic schemes of freight delivery, in particular, mixed transportation of freight.

  3. Optimisation of transport processes in city logistics

    Directory of Open Access Journals (Sweden)

    2011-03-01

    Full Text Available The problem of the rationalization of the flow of people and goods in urban areas is discussed in the presented paper. Due to the increasing traffic congestion, this is one of the most important problems of the effective city management, especially in line with the principles of the sustainable development. The paper presents local conditionings for urban agglomeration of Pozna?, with particular attention paid to difficulties of the distribution of goods in urban areas. The available sources for obtaining the good practice for local authorities are presented, e.g. European projects like SUGAR Project (Sustainable Urban Goods Logistics Achieved by Regional and local policies.

  4. Assessment of Logistics effects from Transport Infrastructure Investments

    DEFF Research Database (Denmark)

    Holvad, Torben; Salling, Kim Bang

    2004-01-01

    logistic-goods effects in section 2. Thereafter in section 3 a number of empirical examples of these effects are examined. In section 4 practical modelling issues regarding logistic-goods effects are considered forming part of the research programme 2002-2005 of the Danish Centre for Logistics and Freight......Evaluation methodologies in Denmark and in a number of other European countries have over the years had a primary focus on person-related issues within transport planning. Thus issues relating to evaluation for freight transport have lacked behind and have not had the attention they deserve on the...... basis of the importance of this research area from a societal and economic viewpoint. This paper aims to identify a framework for assessment of logistic effects from transport infrastructure investment such that these effects can be integrated into the appraisal methodologies. Particular attention...

  5. Deadline-driven LTA transportation logistics

    International Nuclear Information System (INIS)

    Public roadway transport of spent nuclear fuel in the United states is difficult. Transport of radioactive tritium-bearing material isn't any easier. On July 7, 1999, the first lead test assembly (LTA) containing eight tritium-producing burnable absorber rods (TPBARs) inside the NAC-LWT cask left Watts Bar Nuclear Plant, on schedule, destined for Argonne National Laboratory-West (ANL-W). Regulatory approval for the NAC-LWT cask to transport TPBARs and completion of four shipments were final steps in the Commercial Light Water Reactor (CLWR) demonstration project

  6. Allocation and Location of Transport Logistics Centres

    Directory of Open Access Journals (Sweden)

    D. Mocková

    2010-01-01

    Full Text Available The facility allocation problem sets out to determine the optimal number of facilities to be opened. Based on multiple criteria evaluation, the optimal location of the facilities is usually solved subsequently. Several considerations, e.g. technical parameters, costs and finance must be taken into account. Economic analysis is carried out on the basis of the specific instance of the problem.Let us assume that the number of potentially located facilities is known. Then the problem of the optimal location of a given number of facilities in a network is referred to as the facility location problem. The solution to the problem is a set of facilities optimally located in an area such that this area is fully covered by the required services that the facilities provide. An example of a real-life problem of this type is the location of logistics centers. 

  7. Appraisement and benchmarking of third-party logistic service provider by exploration of risk-based approach

    Directory of Open Access Journals (Sweden)

    Nitin Kumar Sahu

    2015-12-01

    Full Text Available In the present era, Reverse Logistics Support has monitored as a momentous realm, where stuffs are transferred from point of consumption to origin. The companies who provide the logistic equipments, i.e. Truck, Joseph Cyril Bomford, and Shipment, etc. to its partner’s firms called Third-Party Logistics (3PL service provider. Today, the feasible 3PL service provider evaluation-opt problem is yet an amorous dilemma. The appraisement and benchmarking of logistics service providers in extent of index; allied risk-based indices and their interrelated metrics; outlooked as a great tool for each international firm, in order that firm could obtain their core goals. The novelty of manuscript is that here, a hairy-based approach has been integrated and then implemented upon a novel developed multi hierarchical third-party logistics (3PL service providers appraisement index in purpose to umpire the 3PL provider for their strong and ill’s core indices. Moreover, the overall score (Si system has also been carried out for benchmarking the 3PL provider companies, where s1 has been found as the best 3PL service provider. The developed approach enabled the manager of firms to make the verdict towards the best inclusive evaluation process of 3PL performance appraisement and benchmarking. A numerical illustration has also been provided to validate the verdict support system.

  8. Matrix logistics indicators assessment of distributed transport hub

    Directory of Open Access Journals (Sweden)

    Igor Arefyev

    2014-06-01

    Full Text Available Background: The paper is devoted to the distributed transport hub substantiation and assessment. The paper  was an example of the technique and form an array of logistical factors as variables that determine this condition. Experience in organizing multimodal transport showed that the "bottleneck" of transport logistics are items of cargo handling ports, terminals, freight stations and warehouses. At the core of the solution of these problems is the problem of estimating the variables determine the Multi-purpose Hubs. The aim is to develop a method of forming the system of logistical multiplying factors determine the role of each of the types in the technologiacal process of distributed Multi-purpose Hubs. Methods: The assessment model for the formation of Distributed Transport Units  can be based on formal methods to predict the behavior of complex systems engineering complexes. Then one of the approaches to the solution of the problem may be the matrix method of technological factors. Results and conclusions: The proposed methodology of the selection and validation of logistic coefficients has the practical importance in the models development for assessing the condition and behavior of Distributed Transport.

  9. Spent fuel shipping costs for transportation logistics analyses

    International Nuclear Information System (INIS)

    Logistics analyses supplied to the nuclear waste management programs of the U.S. Department of Energy through the Transportation Technology Center (TTC) at Sandia National Laboratories are used to predict nuclear waste material logistics, transportation packaging demands, shipping and receiving rates and transportation-related costs for alternative strategies. This study is an in-depth analysis of the problems and contingencies associated with the costs of shipping irradiated reactor fuel. These costs are extremely variable however, and have changed frequently (sometimes monthly) during the past few years due to changes in capital, fuel, and labor costs. All costs and charges reported in this study are based on January 1982 data using existing transport cask systems and should be used as relative indices only. Actual shipping costs would be negotiable for each origin-destination combination

  10. OPTIMAL LOCALIZATION OF SPECIAL TRANSPORT AND LOGISTIC FOODSTUFF CENTRE

    Directory of Open Access Journals (Sweden)

    A. M. Pasichnyk

    2010-06-01

    Full Text Available On the basis of research of statistic indices of custom-house, the population and geographic location of cities of Donetsk region, the method of calculation of optimum placing of the specialized transport-logistical centre of foodstuff is offered.

  11. Cities and transport networks in shipping and logistics research

    OpenAIRE

    Ducruet, César; Lugo, Igor

    2013-01-01

    While shipping and logistics studies often describe the flows and networks on the level of firms and terminals rather than cities, urban studies pay limited attention to transport infrastructure and material flows. The renewal of network analysis based on complex systems will be discussed in this paper as a potential bridge between those two approaches. It particularly focuses on how transport and urban elements can be mutually integrated. The main conclusion points at the efforts to better u...

  12. AREVA Logistics Business Unit Transportation Risk Management Initiative

    International Nuclear Information System (INIS)

    A safe, secure and reliable transportation organization is a key component for the success of the nuclear industry. With the forecasted increase of radioactive material transport flows in future and the changing environment, AREVA Logistic Business Unit (L-BU) must ensure that safety and security risks are minimized but also ensure of the chain supply for its various facilities (mines, conversion, enrichment, fuel manufacturing, reprocessing, etc). AREVA L-BU Unit is implementing a transportation risk management initiative for the radioactive shipments of the AREVA group across all the Business Unit involved in shipments of radioactive and nuclear materials. The paper will present the four main components of the risk management. (authors)

  13. 2009 South American benchmarking study: natural gas transportation companies

    Energy Technology Data Exchange (ETDEWEB)

    Jordan, Nathalie [Gas TransBoliviano S.A. (Bolivia); Walter, Juliana S. [TRANSPETRO, Rio de Janeiro, RJ (Brazil)

    2009-07-01

    In the current business environment large corporations are constantly seeking to adapt their strategies. Benchmarking is an important tool for continuous improvement and decision-making. Benchmarking is a methodology that determines which aspects are the most important to be improved upon, and it proposes establishing a competitive parameter in an analysis of the best practices and processes, applying continuous improvement driven by the best organizations in their class. At the beginning of 2008, GTB (Gas TransBoliviano S.A.) contacted several South American gas transportation companies to carry out a regional benchmarking study in 2009. In this study, the key performance indicators of the South American companies, whose reality is similar, for example, in terms of prices, availability of labor, and community relations, will be compared. Within this context, a comparative study of the results, the comparative evaluation among natural gas transportation companies, is becoming an essential management instrument to help with decision-making. (author)

  14. Transport benchmarks for one-dimensional binary Markovian mixtures revisited

    International Nuclear Information System (INIS)

    The classic benchmarks for transport through a binary Markovian mixture are revisited to look at the probability distribution function of the chosen 'results': reflection, transmission and scalar flux. We argue that the knowledge of the ensemble averaged results is not sufficient for reliable predictions: a measure of the dispersion must also be obtained. An algorithm to estimate this dispersion is tested. (author)

  15. Benchmark calculations in multigroup and multidimensional time-dependent transport

    International Nuclear Information System (INIS)

    It is widely recognized that reliable benchmarks are essential in many technical fields in order to assess the response of any approximation to the physics of the problem to be treated and to verify the performance of the numerical methods used. The best possible benchmarks are analytical solutions to paradigmatic problems where no approximations are actually introduced and the only error encountered is connected to the limitations of computational algorithms. Another major advantage of analytical solutions is that they allow a deeper understanding of the physical features of the model, which is essential for the intelligent use of complicated codes. In neutron transport theory, the need for benchmarks is particularly great. In this paper, the authors propose to establish accurate numerical solutions to some problems concerning the migration of neutron pulses. Use will be made of the space asymptotic theory, coupled with a Laplace transformation inverted by a numerical technique directly evaluating the inversion integral

  16. COMPETITIVE ADVANTAGES OF TRANSPORT LOGISTICS OF THE REGIONAL GRAIN MARKET

    Directory of Open Access Journals (Sweden)

    Smirnov V. V.

    2015-06-01

    Full Text Available The article deals with the place of transport logistics in the system of specialization of the region, territorial labor division and the grain business export potential. It examines the competitive advantages in relation to territorial and environmental factors, production, business, and grain market, the role of these factors in raising the economic efficiency of grain business, taking into account rapidly changing conditions in domestic and global markets. It gives details of the competitive advantages of the port transit segment of the Krasnodar region on the grain major sea carriers example. Effective use of the strong sides of land and sea components of the grain transit will help to further successful integration of the region grain business into the global economics system, it will increase the regional grain production competitiveness. The grain transit schemes improving process should be built taking into account optimization of the delivery channels, excluding parasitic mediators, motivate all participants on the final result according to the criterion of profit which is received not due to the increase in tariff rates, but by providing diverse services, enhancing productivity, introducing of specialization and specific transport costs reducing. It is also proposed to reduce transport costs during the grain transit to domestic and foreign markets due to the capabilities of specialized logistical centers, to organize transport corridors for the grain delivery on their base

  17. Business integration between manufacturing and transport-logistics firms

    DEFF Research Database (Denmark)

    Mortensen, Ole; Lemoine, Olga W.

    electronically through EDI. The current business integration practices are primarily restricted to some sub-processes in three key SC processes: Customer service management, order fulfillment and backwards logistics. In the future the manufacturers want a better integration with the TLSPs, but at the same time....... Design/methodology/approach - Six in-depth case studies were conducted among leading companies in the electrical, electronics, mechanical, food processing, and transport-logistics industries. The data was collected using comprehensive semi-structured interviews. Findings - Most of the firms are coupled......, manufacturers would like to have the freedom of breaking the relationship, if the party does not fulfill the requisites and expectations. The future developments associated to the "commoditization" of TLSPs' services would reinforce this trend. Originality/value - This research has shed light on a relatively...

  18. Interim storage and transport casks in Switzerland. COGEMA logistics experience

    International Nuclear Information System (INIS)

    The Swiss utilities have chosen two different ways for the management of their spent fuel after initial on-site cooling: (1) reprocessing at La Hague plant (COGEMA) and Sellafield plant (BNFL); (2) interim storage at the Central Interim Storage Facility called 'Zwischenlager Wuerenlingen AG' ( ZWILAG). Following international call for tenders by Swiss utilities, COGEMA LOGISTICS has been awarded several contracts for the supply of dual-purpose transport and storage casks for the interim storage of various spent fuel assemblies. All these casks belong to the family of the TN 24 dual purpose spent fuel storage casks in operation in the USA and in Belgium as well. They offer utilities a modular solution for the interim storage of spent fuel in robust metal casks which are fully suitable for off site transports. This flexible product can be readily adapted to suit individual user needs. The Leibstadt Nuclear Power Plant (KKL) has purchased nine licensed dual-purpose TN 97L spent fuel casks (97 BWR type fuel assemblies capacity). Three of them are already in operation at ZWILAG. COGEMA LOGISTICS has also delivered a dual-purpose TN 52L spent fuel casks (52 BWR type fuel assemblies capacity) presently used for transport of spent fuel for reprocessing. The Goesgen Nuclear Power Plant (KKG) has purchased four licensed dual-purpose TN 24G spent fuel casks (37 PWR type fuel assemblies capacity). They are all in operation at ZWILAG. The Muehleberg Nuclear Power Plant (BKW/KKM) has purchased two TN 24BH spent fuel casks (69 BWR type fuel assemblies capacity). At the time of this abstract, cold trials are carried out involving the shuttle transport cask TN 9/4 procured by COGEMA LOGISTICS as well. (author)

  19. Reactive transport benchmarks for subsurface environmental simulation

    Energy Technology Data Exchange (ETDEWEB)

    Steefel, Carl I.; Yabusaki, Steven B.; Mayer, K. U.

    2015-06-01

    Over the last 20 years, we have seen firsthand the evolution of multicomponent reactive transport modeling and the expanding range and increasing complexity of subsurface applications it is being used to address. There is a growing reliance on reactive transport modeling (RTM) to address some of the most compelling issues facing our planet: climate change, nuclear waste management, contaminant remediation, and pollution prevention. While these issues are motivating the development of new and improved capabilities for subsurface environmental modeling using RTM (e.g., biogeochemistry from cell-scale physiology to continental-scale terrestrial ecosystems, nonisothermal multiphase conditions, coupled geomechanics), there remain longstanding challenges in characterizing the natural variability of hydrological, biological, and geochemical properties in subsurface environments and limited success in transferring models between sites and across scales. An equally important trend over the last 20 years is the evolution of modeling from a service sought out after data has been collected to a multifaceted research approach that provides (1) an organizing principle for characterization and monitoring activities; (2) a systematic framework for identifying knowledge gaps, developing and integrating new knowledge; and (3) a mechanistic understanding that represents the collective wisdom of the participating scientists and engineers. There are now large multidisciplinary projects where the research approach is model-driven, and the principal product is a holistic predictive simulation capability that can be used as a test bed for alternative conceptualizations of processes, properties, and conditions. Much of the future growth and expanded role for RTM will depend on its continued ability to exploit technological advancements in the earth and environmental sciences. Advances in measurement technology, particularly in molecular biology (genomics), isotope fractionation, and high

  20. Analysis on Transport of Food Logistics Based on Web and GIS Technology

    Directory of Open Access Journals (Sweden)

    Qiang Xu

    2015-09-01

    Full Text Available The transport of food logistics has higher requirements on the design and selection, path customer’s geographical information positioning, etc. The application of network and GIS technology in the field of logistics transportation of food will enhance the efficiency of delivering food logistics, which can lower the cost of the transportation logistic of food at the same time. This study is based on Web and GIS, taking them as the key point, through the analysis of the effect of network and GIS technology on food logistics transportation system, discussing the application of network as well as the application of GIS technology in food logistics system.

  1. Benchmarking of neutron production of heavy-ion transport codes

    International Nuclear Information System (INIS)

    Document available in abstract form only, full text of document follows: Accurate prediction of radiation fields generated by heavy ion interactions is important in medical applications, space missions, and in design and operation of rare isotope research facilities. In recent years, several well-established computer codes in widespread use for particle and radiation transport calculations have been equipped with the capability to simulate heavy ion transport and interactions. To assess and validate these capabilities, we performed simulations of a series of benchmark-quality heavy ion experiments with the computer codes FLUKA, MARS15, MCNPX, and PHITS. We focus on the comparisons of secondary neutron production. Results are encouraging; however, further improvements in models and codes and additional benchmarking are required. (authors)

  2. Analytical Radiation Transport Benchmarks for The Next Century

    International Nuclear Information System (INIS)

    Verification of large-scale computational algorithms used in nuclear engineering and radiological applications is an essential element of reliable code performance. For this reason, the development of a suite of multidimensional semi-analytical benchmarks has been undertaken to provide independent verification of proper operation of codes dealing with the transport of neutral particles. The benchmarks considered cover several one-dimensional, multidimensional, monoenergetic and multigroup, fixed source and critical transport scenarios. The first approach, called the Green's Function. In slab geometry, the Green's function is incorporated into a set of integral equations for the boundary fluxes. Through a numerical Fourier transform inversion and subsequent matrix inversion for the boundary fluxes, a semi-analytical benchmark emerges. Multidimensional solutions in a variety of infinite media are also based on the slab Green's function. In a second approach, a new converged SN method is developed. In this method, the SN solution is ''minded'' to bring out hidden high quality solutions. For this case multigroup fixed source and criticality transport problems are considered. Remarkably accurate solutions can be obtained with this new method called the Multigroup Converged SN (MGCSN) method as will be demonstrated

  3. 77 FR 22576 - Possible Revocation of Ocean Transportation Intermediary License No. 021899-Trans World Logistics...

    Science.gov (United States)

    2012-04-16

    ... Possible Revocation of Ocean Transportation Intermediary License No. 021899--Trans World Logistics Corporation; Order To Show Cause Trans World Logistics Corporation (Trans World Logistics) is an Indiana... Licensing (BCL) indicate that Trans World Logistics maintains its principal offices at 702 Penny...

  4. Driving toward excellence in transportation and logistics operations and safety

    International Nuclear Information System (INIS)

    DoE's EM is the largest cleanup project in the world: 114 sites, 31 states, 2,000,000 acres. EM scope includes remediation, processing and transportation of approximately: 25 tons of plutonium, 108 tons of plutonium residues, 88 million gallons of radioactive liquid waste, 2,500 tons of spent nuclear fuel, 137,000 cubic meters of transuranic waste, 1.3 million cubic meters of low-level waste. This series of slides presents: the Rocky Flats Status, the Fernald Closure Project, the Mound/Miamisburg and Battelle Columbus statuses, the DUF6 (Depleted Uranium Hexafluoride) Conversion Project Overview, Conversion and Transport Logistics; DoE's EM Measures of Success and performance (transportation incident criteria); the application of technology to Enhance Motor Carrier Performance, Safety, and Emergency Preparedness (technological capabilities for DOE to improve driver performance, shipment safety, and emergency response); the Motor Carrier Tracking and Alert system; DOE Load Securement Field Guide and Checklist developed to ensure all shipments are secured prior to shipment; The transportation Emergency Preparedness Program (TEPP) and outreach support; the EM Transportation Community Awareness and Emergency Response (TransCAER); and the Commodity Flow Survey data of Tennessee, Flagstaff, and Texas/Louisiana

  5. Development of interfacial area transport equation - modeling and experimental benchmark

    International Nuclear Information System (INIS)

    A dynamic treatment of interfacial area concentration has been studied over the last decade by employing the interfacial area transport equation. When coupled with the two-fluid model, the interfacial area transport equation replaces the flow regime dependent correlations for interfacial area concentration and eliminates potential artificial bifurcation or numerical oscillations stemming from these static correlations. An extensive database has been established to evaluate the model under various two-phase flow conditions. These include adiabatic and heated conditions, vertical and horizontal flow orientations, round, rectangular, annulus and 8×8 rod bundle channel geometries, and normal-gravity and simulated reduced-gravity conditions. This paper reviews the current state-of-the-art in the development of the interfacial area transport equation, available experimental databases and 1D and 3D benchmarking work of the interfacial area transport equation. (author)

  6. Computational benchmarking of fast neutron transport throughout large water thicknesses

    International Nuclear Information System (INIS)

    Neutron dosimetry experiments seem to point our difficulties in the treatment of large water thickness like those encountered between the core baffle and the pressure vessel. This paper describes the theoretical benchmark undertaken by EDF, SCK/CEN and TRACTEBEL ENERGY ENGINEERING, concerning the transport of fast neutrons throughout a one meter cube of water, located after a U-235 fission sources plate. The results showed no major discrepancies between the calculations up to 50 cm from the source, accepting that a P3 development of the Legendre polynomials is necessary for the Sn calculations. The main differences occurred after 50 cm, reaching 20 % at the end of the water cube. This results lead us to consider an experimental benchmark, dedicated to the problem of fast neutron deep penetration in water, which has been launched at SCK/CEN. (authors)

  7. Verification of ARES transport code system with TAKEDA benchmarks

    International Nuclear Information System (INIS)

    Neutron transport modeling and simulation are central to many areas of nuclear technology, including reactor core analysis, radiation shielding and radiation detection. In this paper the series of TAKEDA benchmarks are modeled to verify the critical calculation capability of ARES, a discrete ordinates neutral particle transport code system. SALOME platform is coupled with ARES to provide geometry modeling and mesh generation function. The Koch–Baker–Alcouffe parallel sweep algorithm is applied to accelerate the traditional transport calculation process. The results show that the eigenvalues calculated by ARES are in excellent agreement with the reference values presented in NEACRP-L-330, with a difference less than 30 pcm except for the first case of model 3. Additionally, ARES provides accurate fluxes distribution compared to reference values, with a deviation less than 2% for region-averaged fluxes in all cases. All of these confirms the feasibility of ARES–SALOME coupling and demonstrate that ARES has a good performance in critical calculation

  8. Verification of ARES transport code system with TAKEDA benchmarks

    Science.gov (United States)

    Zhang, Liang; Zhang, Bin; Zhang, Penghe; Chen, Mengteng; Zhao, Jingchang; Zhang, Shun; Chen, Yixue

    2015-10-01

    Neutron transport modeling and simulation are central to many areas of nuclear technology, including reactor core analysis, radiation shielding and radiation detection. In this paper the series of TAKEDA benchmarks are modeled to verify the critical calculation capability of ARES, a discrete ordinates neutral particle transport code system. SALOME platform is coupled with ARES to provide geometry modeling and mesh generation function. The Koch-Baker-Alcouffe parallel sweep algorithm is applied to accelerate the traditional transport calculation process. The results show that the eigenvalues calculated by ARES are in excellent agreement with the reference values presented in NEACRP-L-330, with a difference less than 30 pcm except for the first case of model 3. Additionally, ARES provides accurate fluxes distribution compared to reference values, with a deviation less than 2% for region-averaged fluxes in all cases. All of these confirms the feasibility of ARES-SALOME coupling and demonstrate that ARES has a good performance in critical calculation.

  9. Solute transport benchmark studies for TRACR3D code verification

    International Nuclear Information System (INIS)

    A three-dimensional code called TRACR3D, which is applicable to solute transport in both unsaturated and saturated media, is being used to model hypothetical transport of radioactive and nonradioactive constituents from calcined high-level radioactive waste (HLW) at the Idaho Chemical Processing Plant (ICPP). The modeling studies are part of a documentation process which will be required for evaluation of onsite disposal in a near-surface facility as a possible alternative strategy for the long-term management of ICPP HLW. This report discusses the results of a benchmark study for code verification. The problems modeled were: (1) A one-dimensional problem involving the transport of the pertechnetate ion (TcO4-) through a 5-cm diameter by 30-cm-long soil column at ICPP. (2) A one-dimensional problem involving the transport of the iodide ion (I-) through a large caisson (3-m diameter by 6-m depth) at LANL. (3) A three-dimensional problem involving the transport of radioactive ruthenium (Ru-106) from a single-shell tank leak into the vadose zone at the Hanford site. For the three benchmark studies performed, it was concluded that the predicted results from TRACR3D were in agreement with documented and reported solute transport problems, that the input data files were properly configured, and that the code correctly performed the mathematical operations specified in the numerical models. These results will provide a greater degree of confidence in results obtained for planned modeling studies at ICPP. 6 refs., 8 figs., 2 tabs

  10. Challenges for the Transport and Logistics Services Business: The Case of Lithuania

    OpenAIRE

    Langvinienė, N; Sližienė, G

    2014-01-01

    The study reveals the challenges met by Lithuanian enterprises of transport and logistics services business when they are face-to-face with growing economy and high competition in the European Union services market. It identifies the problems arising, as well as possibilities to compete and to win in the market. Lithuania is taking its leadings positions in the transport and logistics services industry by the share of transport and logistics, employment rate and share of the export of service...

  11. Towards Efficient Road Transport in Logistics Operations : A Case Study of IKEA China

    OpenAIRE

    Dong, Zhu; Haoqi, Zhou

    2010-01-01

    Purpose- The purpose of this research is to explore the role of road transport in logistics operations, and to investigate and analyze how IKEA China does operate on road transport in logistics operations. Design/methodology/approach- A single case study has been conducted at IKEA China, including semi-structured interviews and review of internal documents. Along with the case study, literature reviews have been conducted within the areas of efficient road transport in logistics operations.  ...

  12. Benchmarking of a Markov multizone model of contaminant transport.

    Science.gov (United States)

    Jones, Rachael M; Nicas, Mark

    2014-10-01

    A Markov chain model previously applied to the simulation of advection and diffusion process of gaseous contaminants is extended to three-dimensional transport of particulates in indoor environments. The model framework and assumptions are described. The performance of the Markov model is benchmarked against simple conventional models of contaminant transport. The Markov model is able to replicate elutriation predictions of particle deposition with distance from a point source, and the stirred settling of respirable particles. Comparisons with turbulent eddy diffusion models indicate that the Markov model exhibits numerical diffusion in the first seconds after release, but over time accurately predicts mean lateral dispersion. The Markov model exhibits some instability with grid length aspect when turbulence is incorporated by way of the turbulent diffusion coefficient, and advection is present. However, the magnitude of prediction error may be tolerable for some applications and can be avoided by incorporating turbulence by way of fluctuating velocity (e.g. turbulence intensity). PMID:25143517

  13. Analysis of Transportation and Logistics Challenges Affecting the Deployment of Larger Wind Turbines: Summary of Results

    Energy Technology Data Exchange (ETDEWEB)

    Cotrell, J.; Stehly, T.; Johnson, J.; Roberts, J. O.; Parker, Z.; Scott, G.; Heimiller, D.

    2014-01-01

    There is relatively little literature that characterizes transportation and logistics challenges and the associated effects on U.S. wind markets. The objectives of this study were to identify the transportation and logistics challenges, assess the associated impacts, and provide recommendations for strategies and specific actions to address the challenges. The authors primarily relied on interviews with wind industry project developers, original equipment manufacturers, and transportation and logistics companies to obtain the information and industry perspectives needed for this study. They also reviewed published literature on trends and developments in increasing wind turbine size, logistics, and transportation issues.

  14. LOGISTIC APPROACH IN CREATING AN EFFECTIVE MECHANISM OF PASSENGER TRANSPORTATION MANAGEMENT BY RAILWAY TRANSPORT

    Directory of Open Access Journals (Sweden)

    V. I. Kopytko

    2009-09-01

    Full Text Available The logical concept of passenger transportation management on the railway transport is considered. This concept provides the creation of logical centers, which must combine the market mechanism with the government regulation. It is motivated that the efficient work condition of logical centers is a determination of main factors, due to which it is possible to realize the classification of passenger traffic that will allow forecasting the behavior of a logistic structure at the passenger market.

  15. PLACE OF POLISH, HUNGARIAN AND SLOVAK LOGISTICS CENTERS IN TRANSPORT SYSTEMS

    OpenAIRE

    Beata Skowron-Grabowska

    2009-01-01

    In the paper author depicts functioning of logistics centers in Poland, Hungary and Slovak Republic in the context of European Union economical policy. The method of logistics service interpretation is shown in the theoretical way. Building of logistics centers in Poland, Hungary and Slovakia should be coordinated by the EU as well as transport infrastructure should be modernized.

  16. Optimum Repartition of Transport Capacities in the Logistic System using Dynamic Programming

    Directory of Open Access Journals (Sweden)

    Gheorghe BĂŞANU

    2011-08-01

    Full Text Available Transportations take an essential role in logistics, interconnecting the majority of processes and operations within logistic system. The efficient use of transportation capacity is a priority whose achievement can diminish logistic costs. This objective is today difficult to achieve due to increasing complexity of transportation monitoring and coordination. This complexity is determined by transportation number and diversity, by the volume and diversity of orders, by increasing the targets to be supplied.Dynamic programming represents a highly useful tool for logistic managers, considering that its specific techniques and methods are oriented toward solving problems related to resource optimum allocation and utilization.The present paper presents briefly a series of theoretical elements of dynamic programming applied in logistics, based on which it is shown a mathematic model to determine the optimum policy for transport capacity repartition for the area attached to a logistic centre, through three distribution centres.

  17. Public policy intervention in freight transport costs: effects on printed media logistics in the Netherlands

    OpenAIRE

    Runhaar, H.A.C.; Van der Heijden, R.

    2005-01-01

    Trends in contemporary logistics management have led to an increased transport-intensity of production and distribution activities. Transport costs are increasingly traded off against other logistical costs and seem to have lost importance in strategic decision-making. At the same time, in Europe, transport policy aims at regulating freight transport demand by manipulating its costs, for instance, via taxation. In addition, investment in infrastructure lags behind growth in transport, potenti...

  18. Benchmarking of proton transport in Super Monte Carlo simulation program

    International Nuclear Information System (INIS)

    treat the intermediate energy nuclear reactions for proton. Some other hadronic models are also being developed now. The benchmarking of proton transport in SuperMC has been performed according to Accelerator Driven subcritical System (ADS) benchmark data and model released by IAEA from IAEA's Cooperation Research Plan (CRP). The incident proton energy is 1.0 GeV. The neutron flux and energy deposition were calculated. The results simulated using SuperMC and FLUKA are in agreement within the statistical uncertainty inherent in the Monte Carlo method. The proton transport in SuperMC has also been applied in China Lead-Alloy cooled Reactor (CLEAR), which is designed by FDS Team for the calculation of spallation reaction in the target

  19. WHY DO LOGISTICS AND TRANSPORT MATTER FOR DEVELOPMENT

    OpenAIRE

    Nedelescu-Ionescu Daniela; Rujan Ovidiu

    2014-01-01

    In face of the challenges of global competition, business firms are concentrating more on the needs of customers and seeking ways to reduce costs, improve quality and meet the ever-rising expectation of their customers. To these ends, many of them have identified logistics as an area to build cost and service advantages. Logistical activities have always been vital to organizations, and therefore business logistics and supply chain management represents a synthesis of many concepts, principle...

  20. Benchmark on deterministic time-dependent transport calculations without spatial homogenisation

    International Nuclear Information System (INIS)

    The space-time neutron kinetics benchmark on deterministic transport calculations without spatial homogenization C5G7-TD has been developed and proposed for verification of codes solving the time-dependent neutron transport equation. The well-known C5G7 benchmark has been chosen as the base for new benchmark. The proposed benchmark has been calculated by SUHAM-TD code, which realizes the surface harmonic method (SHM). Authors hope to attract the attention of other researchers in order to involve them to participate in calculations of the proposed benchmark. (author)

  1. Benchmarking the interactions among barriers in third-party logistics implementation

    DEFF Research Database (Denmark)

    Diabat, A.; Khreishah, A.; Govindan, Kannan;

    2013-01-01

    analyze the interactions among the barriers. Findings: It is beneficial for the management of any firm to be aware of significant barriers and to diagnose those that could be integral to the organization's future survival. Many works have focused on identifying barriers for TPL implementation, but a model...... identified separately. Originality/value: In this research, eight barriers are considered. Interactions between the barriers are evaluated with the help of the ISM matrix. Of the eight barriers, three barriers, including the lack of application and knowledge of advanced information technology, congested......Purpose: The purpose of this paper is to analyze the interaction among some of the major barriers that may hinder the implementation of third-party logistics (TPL) in manufacturing industries. Design/methodology/approach: This paper uses an interpretive structural modeling (ISM) methodology to...

  2. Microbially Mediated Kinetic Sulfur Isotope Fractionation: Reactive Transport Modeling Benchmark

    Science.gov (United States)

    Wanner, C.; Druhan, J. L.; Cheng, Y.; Amos, R. T.; Steefel, C. I.; Ajo Franklin, J. B.

    2014-12-01

    Microbially mediated sulfate reduction is a ubiquitous process in many subsurface systems. Isotopic fractionation is characteristic of this anaerobic process, since sulfate reducing bacteria (SRB) favor the reduction of the lighter sulfate isotopologue (S32O42-) over the heavier isotopologue (S34O42-). Detection of isotopic shifts have been utilized as a proxy for the onset of sulfate reduction in subsurface systems such as oil reservoirs and aquifers undergoing uranium bioremediation. Reactive transport modeling (RTM) of kinetic sulfur isotope fractionation has been applied to field and laboratory studies. These RTM approaches employ different mathematical formulations in the representation of kinetic sulfur isotope fractionation. In order to test the various formulations, we propose a benchmark problem set for the simulation of kinetic sulfur isotope fractionation during microbially mediated sulfate reduction. The benchmark problem set is comprised of four problem levels and is based on a recent laboratory column experimental study of sulfur isotope fractionation. Pertinent processes impacting sulfur isotopic composition such as microbial sulfate reduction and dispersion are included in the problem set. To date, participating RTM codes are: CRUNCHTOPE, TOUGHREACT, MIN3P and THE GEOCHEMIST'S WORKBENCH. Preliminary results from various codes show reasonable agreement for the problem levels simulating sulfur isotope fractionation in 1D.

  3. Forming optimal routes in the problems of transport logistics by use of GIS technology

    Science.gov (United States)

    Nikolaenko, A. E.; Shugaley, O. A.

    2014-12-01

    Consideration of the key issues that arise in solving the problems of transport logistics, how to overcome them through the use of GIS technology. The analysis of the benefits of using GІS before forming routes in manual mode and the evaluation of economic efficiency in the use of GIS technology in transport logistics.

  4. Logistics, Transport and Food Prices in LAC : Policy Guidance for Improving Efficiency and Reducing Costs

    OpenAIRE

    Schwartz, Jordan; Guasch, Jose Luis; Wilmsmeier, Gordon; Stokenberga, Aiga

    2009-01-01

    This introductory section explains the rationale for the guidance note, reflecting on the relevance of food prices in Latin America and the Caribbean (LAC), their impact on the poor and the effect that logistics and transport costs have on those prices. Based upon that framework, the note provides an overview of the logistics and transport hurdles faced by importers and consumers in the re...

  5. JOVIAN STRATOSPHERE AS A CHEMICAL TRANSPORT SYSTEM: BENCHMARK ANALYTICAL SOLUTIONS

    International Nuclear Information System (INIS)

    We systematically investigated the solvable analytical benchmark cases in both one- and two-dimensional (1D and 2D) chemical-advective-diffusive systems. We use the stratosphere of Jupiter as an example but the results can be applied to other planetary atmospheres and exoplanetary atmospheres. In the 1D system, we show that CH4 and C2H6 are mainly in diffusive equilibrium, and the C2H2 profile can be approximated by modified Bessel functions. In the 2D system in the meridional plane, analytical solutions for two typical circulation patterns are derived. Simple tracer transport modeling demonstrates that the distribution of a short-lived species (such as C2H2) is dominated by the local chemical sources and sinks, while that of a long-lived species (such as C2H6) is significantly influenced by the circulation pattern. We find that an equator-to-pole circulation could qualitatively explain the Cassini observations, but a pure diffusive transport process could not. For slowly rotating planets like the close-in extrasolar planets, the interaction between the advection by the zonal wind and chemistry might cause a phase lag between the final tracer distribution and the original source distribution. The numerical simulation results from the 2D Caltech/JPL chemistry-transport model agree well with the analytical solutions for various cases.

  6. JOVIAN STRATOSPHERE AS A CHEMICAL TRANSPORT SYSTEM: BENCHMARK ANALYTICAL SOLUTIONS

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Xi; Shia Runlie; Yung, Yuk L., E-mail: xiz@gps.caltech.edu [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 (United States)

    2013-04-20

    We systematically investigated the solvable analytical benchmark cases in both one- and two-dimensional (1D and 2D) chemical-advective-diffusive systems. We use the stratosphere of Jupiter as an example but the results can be applied to other planetary atmospheres and exoplanetary atmospheres. In the 1D system, we show that CH{sub 4} and C{sub 2}H{sub 6} are mainly in diffusive equilibrium, and the C{sub 2}H{sub 2} profile can be approximated by modified Bessel functions. In the 2D system in the meridional plane, analytical solutions for two typical circulation patterns are derived. Simple tracer transport modeling demonstrates that the distribution of a short-lived species (such as C{sub 2}H{sub 2}) is dominated by the local chemical sources and sinks, while that of a long-lived species (such as C{sub 2}H{sub 6}) is significantly influenced by the circulation pattern. We find that an equator-to-pole circulation could qualitatively explain the Cassini observations, but a pure diffusive transport process could not. For slowly rotating planets like the close-in extrasolar planets, the interaction between the advection by the zonal wind and chemistry might cause a phase lag between the final tracer distribution and the original source distribution. The numerical simulation results from the 2D Caltech/JPL chemistry-transport model agree well with the analytical solutions for various cases.

  7. Employment and turnover in the transport and logistics sector in the STRING region

    DEFF Research Database (Denmark)

    Serin, Göran Folke; Holzweber, Markus

    development’. The purpose of the first re- port was to analyse the conditions for European transport and logistics in the STRING region. The purpose of this second report is to analyse the strength and competencies within the freight transport and logistics sector in the STRING region. This means basic...... conditions when analysing the possibilities of establishing a ‘Green Transport Corridor’. The analysis will take its point of departure in analysis of employment, turnover, firm structure and location within the freight transport and logistics sector in the STRING region....

  8. Dynamics of intermodal logistical systems on containerisation and road transportation in Durban, South Africa

    Directory of Open Access Journals (Sweden)

    Nerissa Govender

    2014-03-01

    Full Text Available The underlying port operations in Durban, South Africa, epitomise intense global competitiveness in the intermodal logistics chain. The link between containerisation and theroad transport network can falter as a result of the dynamics of the logistics system. The main objective of the study was to establish the extent of the intermodal challenges of logistical systems on containerisation to which the role of intermodal sea–road freight transportation enhances the logistical competitiveness. It further examined the intermodal relationship on containerised freight between the challenges of containerisation processes and the effects on road freight transport mode. The impact of containerisation on intermodalism, the sea–road freight transport network and the technological attributes of security-based systems and logistical tracking protocols influence the systematic movement of containers on Durban’s public roads.

  9. Design and scenario assessment for collaborative logistics and freight transport systems

    OpenAIRE

    Gonzalez-Feliu, Jesus; Morana, Joelle; Salanova Grau, Josep-Maria; Ma, Tai-Yu

    2013-01-01

    Collaboration between partners is a very popular subject in both logistics and decision support research. However, transport management is often taken into account only as an external cost, without integration in collaborative reasoning. This paper proposes a framework to assess collaborative solutions in the context of logistics and freight transport, as well as to describe the links between freight transport and supply chain managementin terms of collaboration techniques. First the main con...

  10. The growth of freight transport role – implications to logistical framework

    OpenAIRE

    Tatiana-Roxana Nae

    2008-01-01

    Transports sustain directly the economic relationship between countries and evolve according to connection between supply and demand. They bring a continuous and direct effort to valorification of our planet resources, contributing to redistribution of incomes and to world economic and social progress. The paper proposes to place transport activity from logistic point of view, through presentation of the relation between logistical system and development of transports, and of a relation with ...

  11. Logistics real estate markets: indicators of structural change, linking land use and freight transport

    OpenAIRE

    Hesse, Markus

    2002-01-01

    The system of physical distribution that comprises transport and logistics, warehousing and wholesale, is an ideal indicator of structural change. Distribution and logistics have developed dynamically, with respect to new technologies, corporate restructuring, and a changing market environment. Whereas traditional logistics were characterized primarily by the demand of manufacturing customers for the shipment of bulk-commodities, modern production and service systems require frequent deliveri...

  12. Factors Influencing ICT Adoption in Halal Transportations: A Case Study of Malaysian Halal Logistics Service Providers

    OpenAIRE

    Mohd Iskandar Illyas Tan; Raziah Noor Razali; Mohammad Ishak Desa

    2012-01-01

    The purpose of this study is i) to investigate the factors that influence the adoption of Information and Communication Technology (ICT) in Halal transportations and logistics and ii) to develop an ICT adoption framework for Halal logistic service providers (LSPs). The Halal LSPs selected for the study currently used ICT service platforms, such as accounting and management system for Halal logistic business. The study categorizes the factors influencing the adoption decision and process by LS...

  13. Benchmarking reactive transport models at a hillslope scale

    Science.gov (United States)

    Kalbacher, T.; He, W.; Nixdorf, E.; Jang, E.; Fleckenstein, J. H.; Kolditz, O.

    2015-12-01

    The hillslope scale is an important transition between the field scale and the catchment scale. The water flow in the unsaturated zone of a hillslope can be highly dynamic, which can lead to dynamic changes of groundwater flow or stream outflow. Additionally, interactions among host rock formation, soil properties and recharge water from precipitation or anthropogenic activities (mining, agriculture etc.) can influence the water quality of groundwater and stream in the long term. To simulate reactive transport processes at such a scale is a challenging task. On the one hand, simulation of water flow in a coupled soil-aquifer system often involves solving of highly non-linear PDEs such as Richards equation; on the other hand, one has to consider complicated biogeochemical reactions (e.g. water-rock interactions, biological degradation, redox reactions). Both aspects are computationally expensive and have high requirements on the numerical precision and stabilities of the employed code. The primary goals of this study are as follows: i) Identify the bottlenecks and quantitatively analyse their influence on simulation of biogeochemical reactions at a hillslope scale; ii) find or suggest practical strategies to deal with these bottlenecks, thus to provide detailed hints for future improvements of reactive transport simulators. To achieve these goals, the parallelized reactive transport simulator OGS#IPhreeqc has been applied to simulate two benchmark examples. The first example is about uranium leaching based on Šimůnek et al. (2012), which considers the leaching of uranium from a mill tailing and accompanied mineral dissolution/precipitation. The geochemical system is then extended to include redox reactions in the second example. Based on these examples, the numerical stability and parallel performance of the tool is analysed. ReferenceŠimůnek, J., Jacques, D., Šejna, M., van Genuchten, M. T.: The HP2 program for HYDRUS (2D/3D), A coupled code for simulating two

  14. Analytical benchmarks for nuclear engineering applications. Case studies in neutron transport theory

    International Nuclear Information System (INIS)

    The developers of computer codes involving neutron transport theory for nuclear engineering applications seldom apply analytical benchmarking strategies to ensure the quality of their programs. A major reason for this is the lack of analytical benchmarks and their documentation in the literature. The few such benchmarks that do exist are difficult to locate, as they are scattered throughout the neutron transport and radiative transfer literature. The motivation for this benchmark compendium, therefore, is to gather several analytical benchmarks appropriate for nuclear engineering applications under one cover. We consider the following three subject areas: neutron slowing down and thermalization without spatial dependence, one-dimensional neutron transport in infinite and finite media, and multidimensional neutron transport in a half-space and an infinite medium. Each benchmark is briefly described, followed by a detailed derivation of the analytical solution representation. Finally, a demonstration of the evaluation of the solution representation includes qualified numerical benchmark results. All accompanying computer codes are suitable for the PC computational environment and can serve as educational tools for courses in nuclear engineering. While this benchmark compilation does not contain all possible benchmarks, by any means, it does include some of the most prominent ones and should serve as a valuable reference. (author)

  15. Components and Influencing Factors of Transport Costs in Logistics

    OpenAIRE

    Alexandru Burda

    2015-01-01

    Transport systems face the need to increase the capacity of moving materials and goods, while reducing the costs generated in this process. Also transport is an essential function for the operation of any business. However it can be very costly one, if not optimized. To reduce transport costs, knowledge of and action on the factors influencing the transport costs, is needed.

  16. Automated Transportation Management System (ATMS) V2.0 logistics module PBI acceptance criteria

    International Nuclear Information System (INIS)

    This document defines the acceptance criteria for the Automated Transportation Management System V2.0 Logistics Module Performance Based Incentive (PBI). This acceptance criteria will be the primary basis for the generation of acceptance test procedures. The purpose of this document is to define the minimum criteria that must be fulfilled to guarantee acceptance of the Logistics Module

  17. Modified PSO Algorithm to the Logistical Network for Goods Transportation Based on Internet of Things

    Directory of Open Access Journals (Sweden)

    Du HuaMei Zhang Genglu

    2013-01-01

    Full Text Available By the technologies of the Internet of Things, the static and dynamic information of the logistical network can be integrated into an information system which can be used to the cost optimization of the logistical services. In this study a modified PSO algorithm is proposed with proper description for the relationship among the key elements in the logistical network. In the proposed algorithm, the similarity of the solution space vector is applied to the overlap generation. Simulative experimental results demonstrate the algorithm is efficiency and effective to the cost optimization of the goods transportation in logistical services.

  18. Application Of Multilevel HM-Network At Designing Of Warehouses Squares In Logistics Transport Systems

    OpenAIRE

    Kiturko, O.

    2011-01-01

    The article deals with the technique allowing to estimate and forecast expected incomes, logistics transport systems subjects warehouse squares. The technique is based on application of HM (Howard-Matalytski) - queueing networks.

  19. Analysis of Transportation and Logistics Challenges Affecting the Deployment of Larger Wind Turbines: Summary of Results

    Energy Technology Data Exchange (ETDEWEB)

    J. Cotrell, T. Stehly, J. Johnson, J. O. Roberts, Z. Parker, G. Scott, and D. Heimiller

    2014-01-28

    The objectives of this study were to identify the transportation and logistics challenges, assess the associated impacts, and provide recommendations for strategies and specific actions to address the challenges.

  20. Benchmark on deterministic transport calculations without spatial homogenization. A 2-D/3-D MOX fuel assembly benchmark

    International Nuclear Information System (INIS)

    One of the important issues regarding deterministic transport methods for whole core calculations is that homogenized techniques can introduce errors into results. On the other hand, with modern computation abilities, direct whole core heterogeneous calculations are becoming increasingly feasible. This report provides an analysis of the results obtained from a challenging benchmark on deterministic MOX fuel assembly transport calculations without spatial homogenization. A majority of the participants obtained solutions that were more than acceptable for typical reactor calculations. The report will be of particular interest to reactor physicists and transport code developers. (author)

  1. Benchmarking Benchmarks

    NARCIS (Netherlands)

    D.C. Blitz (David)

    2011-01-01

    textabstractBenchmarking benchmarks is a bundle of six studies that are inspired by the prevalence of benchmarking in academic finance research as well as in investment practice. Three studies examine if current benchmark asset pricing models adequately describe the cross-section of stock returns. W

  2. Competence and Capacity-Building Requirements in Transport and Logistics Market

    OpenAIRE

    Bazaras Darius; Čižiūnienė Kristina; Palšaitis Ramūnas; Kabashkin Igor

    2016-01-01

    The article analyses theoretical aspects of the qualitative assessment of logistics and transport specialists’ potential, as well as provides research results on competence and capacity-building process in preparation of logistics and transport specialists. The results enabled to identify problematic areas of graduate integration in the labour market and foresee the possible requirements for professional development. In some cases, internal motivation is related to problematic points or negat...

  3. A Case Study Investigation on Purchasing Green Transport and Logistics Services

    OpenAIRE

    Evangelista, Pietro; Huge-Brodin, Maria; Isaksson, Karin; Sweeney, Edward

    2012-01-01

    In the context of green supply chain management, green purchasing has received increased attention over the past decade and the strategic importance of introducing green aspects into purchasing practices has been recognised. Despite this growing importance, little has been written in relation to purchasing green transport and logistics services. Considering the strong environmental impact associated with transport and logistics activities, much remains to be learned concerning buyer’s practic...

  4. A development of logistics management models for the Space Transportation System

    Science.gov (United States)

    Carrillo, M. J.; Jacobsen, S. E.; Abell, J. B.; Lippiatt, T. F.

    1983-01-01

    A new analytic queueing approach was described which relates stockage levels, repair level decisions, and the project network schedule of prelaunch operations directly to the probability distribution of the space transportation system launch delay. Finite source population and limited repair capability were additional factors included in this logistics management model developed specifically for STS maintenance requirements. Data presently available to support logistics decisions were based on a comparability study of heavy aircraft components. A two-phase program is recommended by which NASA would implement an integrated data collection system, assemble logistics data from previous STS flights, revise extant logistics planning and resource requirement parameters using Bayes-Lin techniques, and adjust for uncertainty surrounding logistics systems performance parameters. The implementation of these recommendations can be expected to deliver more cost-effective logistics support.

  5. Competence and Capacity-Building Requirements in Transport and Logistics Market

    Directory of Open Access Journals (Sweden)

    Bazaras Darius

    2016-03-01

    Full Text Available The article analyses theoretical aspects of the qualitative assessment of logistics and transport specialists’ potential, as well as provides research results on competence and capacity-building process in preparation of logistics and transport specialists. The results enabled to identify problematic areas of graduate integration in the labour market and foresee the possible requirements for professional development. In some cases, internal motivation is related to problematic points or negative view from the environment, as well as poor understanding of knowledge benefits in the person’s practical life. Training and education is objectively at the meeting point between research, technological and organisational systems. In such conditions the objective of the education on logistics is to offer the customers the best possible service in the field of the transfer of knowledge in harmony with the trend in logistics programme development. The main problems and perspectives of logistics education and training process are discussed in this article.

  6. Application studies of RFID technology in the process of coal logistics transport

    Science.gov (United States)

    Qiao, Bingqin; Chang, Xiaoming; Hao, Meiyan; Kong, Dejin

    2012-04-01

    For quality control problems in coal transport, RFID technology has been proposed to be applied to coal transportation process. The whole process RFID traceability system from coal production to consumption has been designed and coal supply chain logistics tracking system integration platform has been built, to form the coal supply chain traceability and transport tracking system and providing more and more transparent tracking and monitoring of coal quality information for consumers of coal. Currently direct transport and combined transport are the main forms of coal transportation in China. The means of transport are cars, trains and ships. In the booming networking environment of RFID technology, the RFID technology will be applied to coal logistics and provide opportunity for the coal transportation tracking in the process transportation.

  7. THE TIME FACTOR IN MARITIME TRANSPORT AND PORT LOGISTICS ACTIVITIES

    Directory of Open Access Journals (Sweden)

    Florin NICOLAE

    2016-06-01

    Full Text Available Execution of the carriage contract requires compliance to all the conditions in it, by all those involved in the transport. Main obligations incumbent upon the vessel, and obviously, to other transporters, who must provide transportation according to deadlines and safety. Contract compliance is certifying transport participants about their seriousness and an appropriate market quotation. Therefore, present work pragmatically sets schematics reference time associated implementation of the carriage contract. Also, are demonstrated relationships established between maritime transport “players” and sequence of activities related to the operation of the vessel in port. The authors propose a set of concepts and terms whose utility is established to solve practical problems in this area of activity.

  8. Logistics management

    OpenAIRE

    Chrastina, Jakub

    2012-01-01

    This theses „Logistic governance“ concentrates on logistic projects of selected company specifically implementing of new IT system and new sort of transportation in supplied services. In the theoretical part of the thesis are described basic concepts as logistic strategy of the company in which are described general rules of logistic impact on company, classification of logistic, methods and trends that can be expected in future. Then follows description of actual parts of logistic proce...

  9. Simulation-Based Planning and Control of Transport Flows in Port Logistic Systems

    OpenAIRE

    Antonio Diogo Passos Lima; Frederico Werner de Mascarenhas; Enzo Morosini Frazzon

    2015-01-01

    In highly dynamic and uncertain transport conditions, transport transit time has to be continuously monitored so that the service level is ensured at a proper cost. The aim of this research is to propose and to test a procedure which allows an agile planning and control of transport flows in port logistic systems. The procedure couples an agent-based simulation and a queueing theory model. In this paper, the transport scheduling performed by an agent at the intermodal terminal was taken into ...

  10. An approach to optimizing spent nuclear fuel transportation logistics

    International Nuclear Information System (INIS)

    The U.S. Department of Energy (DOE) has been assigned responsibility for managing the nation's spent nuclear fuel (SNF). Because of the large quantity of SNF to be moved from the reactors in which it is generated, the DOE is planning a new generation of transport casks designed specifically for the characteristics of the SNF to be transported. Choosing the age and burnup values for which to design the transportation cask would be relatively simple if all the SNF to be transported in a new generation of casks were expected to have the same age and burnup characteristics. It is desirable to maximize cask capacity, which leads to fewer cask trips and thus to less cost and less public risk. One could design multiple casks, each tailored to a specific portion of the SNF, and reduce the total number of trips needed to transport a fixed quantity of SNF. However, the additional administrative, design, and certification costs could outweigh any savings accruing from reduced trips. a significant part of ongoing transportation systems analysis in the U.S. is devoted to the design issues described above. This paper outlines some of the approaches currently under consideration

  11. Logistic Core Operations with SAP Inventory Management, Warehousing, Transportation, and Compliance

    CERN Document Server

    Kappauf, Jens; Koch, Matthias

    2012-01-01

    Logistic Core Operations with SAP” not only provides an overview of core logistics processes and functionality—it also shows how SAP’s Business Suite covers logistic core operations, what features are supported, and which systems can be used to implement end-to-end processes in the following logistic core disciplines: Procurement, Distribution, Transportation, Warehouse Logistics and Inventory Management, and Compliance and Reporting. In this context the authors not only explain their integration, the organizational set-up, and master data, but also which solution fits best for a particular business need.   This book serves as a solid foundation for understanding SAP software. No matter whether you are a student or a manager involved in an SAP implementation, the authors go far beyond traditional function and feature descriptions, helping you ask the right questions, providing answers, and making recommendations. The book assists you in understanding SAP terminology, concepts and technological compo...

  12. PRIORITIES AND WAYS OF INCREASE OF EFFICIENCY OF DEVELOPMENT OF TRANSPORT LOGISTICS OF THE LARGE CITY

    Directory of Open Access Journals (Sweden)

    M.A. Chernyshev

    2012-04-01

    Full Text Available In article the new approach to transport (as component of a logistic chain within commerce logistics, in different aspects is considered: - from the point of view of overall performance of separate means of transport; - from a position of the organization of transportations «from a door to a door» (from the consignor to the recipient; - taking into account interests of clients, i.e. consideration not only the main transportation, but also processing, storage, packing, unpacking and giving of materials to machines in shop together with accompanying information streams. Such approach promotes an optimum choice of transport services as quality of transportations, as a rule, is more reflected in the general expenses, than cost of transportations.

  13. Logistic Management and Transportation Security in Northern Nigeria

    Directory of Open Access Journals (Sweden)

    Gambiyo Suleiman Purokayo

    2015-03-01

    Full Text Available Working of transportation system depends on characteristics and peculiarities of economy, including security concerns, which is foremost in Africa. The primary objective of the study is to assess accessibility constraints in Nigeria’s Northeast region. Road transport is the most pervasive of all transport modes in Africa and is central for growth of the sub region. Road networks and terrain amongst others estimated showed that terrain have been one of the constraints in achieving the objectives of an efficient transportation. Some gains in road network in some locations had been eroded by increased insurgency and crisis in most locations. This has resulted in shortfalls of supply of goods within countries in the region, thus affecting their economies. We recommend that the root cause for increased insurgency and crisis, which may be due to implementation of various economic policies in Africa and increase inequality, corruption and lack of functional/truncated democracies, should be addressed. The working of African economic cooperation like ECOWAS should be strengthened and implemented.

  14. Towards the Restructuring and Co-ordination Mechanisms for the Architecture of Chinese Transport Logistics

    OpenAIRE

    Yang, Jiaqi

    2009-01-01

    textabstractWith China’s emergence as a global manufacturing centre, reshaping the country’s logistics industry is assuming a global dimension too. The Chinese transport sector, despite its tremendous potential in facilitating the economic development of the country, is plagued with problems of insufficient infrastructure; overlapping regulatory authority; operational inefficiencies and a lack of logistics culture. The thesis shows that China urgently needs to restructure the architecture of ...

  15. Implementing Rapid Prototyping Model in Logistics Operations Manual Creation : Valmet Transportation Case

    OpenAIRE

    Ilison, Peeter

    2015-01-01

    This thesis is a qualitative project-based study about creating Logistics Operations Manual for Valmet Transportation staff. The thesis is roughly divided in two parts: supporting theory and data analysis, and Logistics Operations Manual. The client of the thesis is Valmet Technologies, Inc., a leading global developer and supplier of services and technologies for process industries. Theory was gathered from books and article databases and used to support the instructional design theory an...

  16. ENERGY ANALYSIS IN LOGISTICS MULTIMODAL TRANSPORT OF SOYBEAN

    Directory of Open Access Journals (Sweden)

    FÁBIO CÉSAR BOVOLENTA 1

    2009-09-01

    Full Text Available This study aimed to analyze the energy flow is currently considering a route exists for the marketing of soybeans in central-western Brazil, more precisely, of Rio Verde/GO to the port of Santos/SP, since it is a great an exporter of bulk cargoes. A route was selected for analysis, comprising multimodality, i.e., road, rail and waterway. For all modes studied, we adopted an "equivalence factor loading, leaving each mode of transport under similar loads. Physical factors involved in the process - such as equipment and machinery, fuel, grease, oil, labor and maintenance of roads - were quantified and converted into energy units (MJ, through energy coefficients. The results showed higher energy expenditure for the road transportation (0.50 MJ.km-1.t- 1, followed by modal rail (0.42 MJ.km-1.t-1 and, thirdly, the modal waterway (0.22 MJ.km-1.t-1.

  17. Extensions for logistic and public transport in SUMO

    OpenAIRE

    Kendziorra, Andreas; Weber, Melanie

    2015-01-01

    Disasters or major events affect the efficiency of passenger and freight transportation. The project VABENE++ considers the question what happens when the road network is disturbed due such an event. Within this project, the German Aerospace Center developed a decision support tool that provides consolidated information and operation recommendations regarding individual motor car traffic based on traffic simulation performed by SUMO. Recently, it was aimed to realise simulation scenarios in w...

  18. Coal in Colombia and Venezuela: Production, transportation and export logistics

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, D. [Coal Export Services International, Inc. (United States)

    1998-12-31

    The coal seams uplifted by the Perija and Sierra Nevada de Santa marta Mountains along the border of Colombia and Venezuela are high quality reserves with low mining ratios that are in close proximity to the coast. Since the late 70`s and early 80`s, various mining developments have increased the production of these reserves to its current level of 37 million tons per year. Most of the production is shipped to European and to North and South American markets. Further exploitation of these reserves will require significant investments in mine development, inland transportation, and port facilities. This paper will summarize the current status of the Colombian and Venezuelan coal industry, as well as the potential and challenges for increased production and exportation.

  19. The development of a natural gas transportation logistics management system

    International Nuclear Information System (INIS)

    Efficient management of the natural gas business chain - based on pipeline transmission networks and taking into consideration the interaction among the main players (e.g., shippers, suppliers, transmission companies and local distribution companies) - requires the use of decision-making support systems. These support systems maximise resources and mitigate contingencies due to gas supply shortfalls, operational contingencies from scheduled and non-scheduled equipment outages and market demand shortfalls. This study presents a practical use for technologies, such as a thermohydraulic simulation of gas flow through pipelines, a Monte Carlo simulation for compressor station availability studies, an economic risk evaluation related to potential revenue losses and contractual penalties and linear programming for the maximisation of income and the minimisation of contractual penalties. The proposed system allows the optimum availability level to be defined and maintained by the Transporter (by installing reserve capacity) to mitigate losses related to revenue and contractual penalties. It also economically identifies, quantifies and justifies the installation of stand-by compressor units that can mitigate the Transporter's exposure to losses caused by capacity shortfalls as a consequence of scheduled and non-scheduled outages. - Highlights: → We present a DSS to help the decision on investments on spare compressor units of pipelines systems. → The system may be applied to new or existing projects. → The system is able to estimate the revenue losses and the contractual penalties. → An economical evaluation shows the NPV for each configuration of spare units. → The method was applied to the case study of the Bolivia-Brazil gas pipeline.

  20. An embedded semi-analytical benchmark via iterative interpolation for neutron transport methods verification

    International Nuclear Information System (INIS)

    A new multidimensional semi-analytical benchmark capability is developed. The key feature in the solution is the point kernel formulation. The 3D nature of the source is inherited in the flux making this a true multidimensional test. In addition, an efficient numerical scheme, called iterative interpolation, is used to evaluate the required point kernel solution and maintain benchmark accuracy. The EVENT finite element transport algorithm is compared to the point source solution as the first step of embedding the benchmark directly with the EVENT code. Additional code comparisons will be presented. (authors)

  1. Simulation-Based Planning and Control of Transport Flows in Port Logistic Systems

    Directory of Open Access Journals (Sweden)

    Antonio Diogo Passos Lima

    2015-01-01

    Full Text Available In highly dynamic and uncertain transport conditions, transport transit time has to be continuously monitored so that the service level is ensured at a proper cost. The aim of this research is to propose and to test a procedure which allows an agile planning and control of transport flows in port logistic systems. The procedure couples an agent-based simulation and a queueing theory model. In this paper, the transport scheduling performed by an agent at the intermodal terminal was taken into consideration. The decision-making agent takes into account data which is acquired in remote points of the system. The obtained results indicate the relevance of continuously considering, for the transport planning and control, the expected transit time and further waiting times along port logistic systems.

  2. Analysis of two different benchmark problems using one-dimensional neutron transport theory code

    International Nuclear Information System (INIS)

    This paper focuses on the application of method of characteristics (MOC) for the solution of neutron transport equation in one-dimensional geometries. The paper discusses the results obtained for two different benchmark problems. The results compared well with the benchmark results. An interesting result is that, in case of MOC the unphysical flux dip at the centre of sphere (commonly found with SN - method) is absent. (author)

  3. A benchmark comparison of Monte Carlo particle transport algorithms for binary stochastic mixtures

    International Nuclear Information System (INIS)

    We numerically investigate the accuracy of two Monte Carlo algorithms originally proposed by Zimmerman and Zimmerman and Adams for particle transport through binary stochastic mixtures. We assess the accuracy of these algorithms using a standard suite of planar geometry incident angular flux benchmark problems and a new suite of interior source benchmark problems. In addition to comparisons of the ensemble-averaged leakage values, we compare the ensemble-averaged material scalar flux distributions. Both Monte Carlo transport algorithms robustly produce physically realistic scalar flux distributions for the benchmark transport problems examined. The base Monte Carlo algorithm reproduces the standard Levermore-Pomraning model results. The improved Monte Carlo algorithm generally produces significantly more accurate leakage values and also significantly more accurate material scalar flux distributions. We also present deterministic atomic mix solutions of the benchmark problems for comparison with the benchmark and the Monte Carlo solutions. Both Monte Carlo algorithms are generally significantly more accurate than the atomic mix approximation for the benchmark suites examined.

  4. OECD/International Transport Forum Joint Transport Research Research Center Working Center Working Group Project : OECD Heavy Vehicle Benchmarking Study

    OpenAIRE

    Cerezo, Véronique; CENTRE D'ETUDES TECHNIQUES DE L'EQUIPEMENT DE LYON - CETE LYON; LABORATOIRE REGIONAL DES PONTS ET CHAUSSEES DE LYON - CETE DE LYON - LRPC LYON

    2009-01-01

    The Joint OECD/ITF Transport Research Centre (JTRC) Research Working Group has conducted a global study about the safety, environmental and productivity impacts of current and future heavy vehicle operations. The project Heavy Vehicles: Regulatory, Operational and Productivity Improvements included an investigation to benchmark the safety performance of representative vehicles from member countries participating in the OECD Working Group on heavy vehicles. This benchmarking study was done by ...

  5. The reactive transport benchmark proposed by GdR MoMaS: presentation and first results

    Energy Technology Data Exchange (ETDEWEB)

    Carrayrou, J. [Institut de Mecanique des Fluides et des Solides, UMR ULP-CNRS 7507, 67 - Strasbourg (France); Lagneau, V. [Ecole des Mines de Paris, Centre de Geosciences, 77 - Fontainebleau (France)

    2007-07-01

    We present here the actual context of reactive transport modelling and the major numerical challenges. GdR MoMaS proposes a benchmark on reactive transport. We present this benchmark and some results obtained on it by two reactive transport codes HYTEC and SPECY. (authors)

  6. The reactive transport benchmark proposed by GdR MoMaS: presentation and first results

    International Nuclear Information System (INIS)

    We present here the actual context of reactive transport modelling and the major numerical challenges. GdR MoMaS proposes a benchmark on reactive transport. We present this benchmark and some results obtained on it by two reactive transport codes HYTEC and SPECY. (authors)

  7. Transportation system modeling and simulation in support of logistics and operations

    International Nuclear Information System (INIS)

    Effective management of DOE's transportation operations requires better data than are currently available, a more integrated management structure for making transportation decisions, and decision support tools to provide needed analysis capabilities. This paper describes a vision of an advanced logistics management system for DOE, and the rationale for developing improved modeling and simulation capability as an integral part of that system. We illustrate useful types of models through four examples, addressing issues of transportation package allocation, fleet sizing, routing/Scheduling, and emergency responder location. The overall vision for the advanced logistics management system, and the specific examples of potential capabilities, provide the basis for a conclusion that such a system would meet a critical DOE need in the area of radioactive material and waste transportation. (authors)

  8. Transportation system modeling and simulation in support of logistics and operations

    International Nuclear Information System (INIS)

    Effective management of DOE's transportation operations requires better data than are currently available, a more integrated management structure for making transportation decisions, and decision support tools to provide needed analysis capabilities. This paper describes a vision of an advanced logistics management system for DOE, and the rationale for developing improved modeling and simulation capability as an integral part of that system. The authors illustrate useful types of models through four examples, addressing issues of transportation package allocation, fleet sizing, routing/scheduling, and emergency responder location. The overall vision for the advanced logistics management system, and the specific examples of potential capabilities, provide the basis for a conclusion that such a system would meet a critical DOE need in the area of radioactive material and waste transportation

  9. Benchmarking a Visual-Basic based multi-component one-dimensional reactive transport modeling tool

    Science.gov (United States)

    Torlapati, Jagadish; Prabhakar Clement, T.

    2013-01-01

    We present the details of a comprehensive numerical modeling tool, RT1D, which can be used for simulating biochemical and geochemical reactive transport problems. The code can be run within the standard Microsoft EXCEL Visual Basic platform, and it does not require any additional software tools. The code can be easily adapted by others for simulating different types of laboratory-scale reactive transport experiments. We illustrate the capabilities of the tool by solving five benchmark problems with varying levels of reaction complexity. These literature-derived benchmarks are used to highlight the versatility of the code for solving a variety of practical reactive transport problems. The benchmarks are described in detail to provide a comprehensive database, which can be used by model developers to test other numerical codes. The VBA code presented in the study is a practical tool that can be used by laboratory researchers for analyzing both batch and column datasets within an EXCEL platform.

  10. The coastal transportation in Brazil - potential for the improvement of aiming intermodality logistic flow

    Directory of Open Access Journals (Sweden)

    Delmo Alves Moura

    2011-06-01

    Full Text Available This study describes aspects related to coastal shipping in Brazil and its main actors and intermodal factors (road, rail, fluvial transportation etc. which corroborate to the increase of logistics competitiveness and efficiency of transportation in a large country like Brazil. The purpose of the study is bibliographic research on the topic, analyzing it inside the Brazilian scenario and also how it has been implemented in some countries. The objective of the study is also analyzing legislation which defines parameters to coastal shipping. This fact interferes directly with the logistics system and its intermodal aspects. If Brazil intends to reduce its logistics costs, coastal shipping should be an effective way to contribute to the Brazilian matrix of transport. Coastal shipping is supposed to bring competitive advantage and reduction of logistic costs. The conclusion is that integration is essential among the systems of domestic transportation and coastal shipping with its outstanding role in this environment, can contribute substantially to the Brazilian maritime industry.

  11. The operational and logistic experience on transportation of Brazilian spent fuel to USA

    International Nuclear Information System (INIS)

    A shipment of 127 spent MTR fuel assemblies was made from IEA-R1 Research Reactor located at the Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), Sao Paulo, Brazil to Savannah River Site Laboratory in the United States. This paper describes the operational and logistic experience on this transportation made by IPEN staff and the Consortium NCS/GNS. (author)

  12. Transport and Logistics in Djibouti : Contribution to Job Creation and Economic Diversification

    OpenAIRE

    World Bank

    2013-01-01

    The objective of this policy note is: (i) assessing the current situation of the transport and logistics sector in Djibouti, in particular regarding employment; (ii) examining the potential of the sector for creating jobs and generating new activities; and (iii) analyzing the constraints and making recommendations to alleviate. The note is divided into three chapters: (1) a diagnosis of tr...

  13. The drivers of ICT adoption in transport and logistics services: an approach from the SCP model

    OpenAIRE

    Hidalgo Nuchera, Antonio; Albors Garrigós, José

    2010-01-01

    Transport and logistics services (TLS) are key components of a successful economy, enabling the movement of goods, services and people as efficiently as possible. In the European Union, the transport sector generates 7% of European Union gross domestic product (GDP) and for around 5% of employment. Nevertheless, the challenge is to find solutions for freight and passengers that are economically viable and that also promote sustainable growth, fuel economy, the reduction of emissions, saf...

  14. Logistic Changes to Production and some Impacts on Transportation and Materials Handling

    OpenAIRE

    Sjoestedt, L.; Wandel, S

    1988-01-01

    There is presently a trend to "internalize" external transport links within the framework of large production system networks. This is made possible by the rapidly increasing capability to swiftly exchange huge masses of data within such networks and the availability of a deregulated transport sector, where the highly competitive trucking industry sets the rules. The result is new forms of logistics systems, designed to meet a set of service requirements which go beyond low cost. The impact o...

  15. Decoupling in order to reduce the negative environmental impact from transport logistics. From theory to reality

    International Nuclear Information System (INIS)

    This report deals with the issue of decoupling from a bottom-up approach and thereby works as a complementary report to 'A closer Look at Road Freight Transport and Economic Growth in Sweden' published by the Swedish Environmental Protection Agency. The freight transport logistics market is steadily growing in Sweden and the EU. Between 1990 and 2002 the growth in Sweden was 15 % and in EU15 33 %. The increase has primarily occurred within road freight. Economics of scale and low cost for transport logistics services drives centralisation both within trade and manufacturing. This leads to an increase of the transport work. The objective of this report is to describe decoupling from a business perspective. We have therefore focused on industrial sectors that are the largest drivers of transportation demand. In addition we have included the most relevant providers of transport services. In brief this means - Buyers of transport logistics: Clothing, Furniture, Pulp and paper, Oil and energy, Steel, Mechanical industry, Fast moving goods, and Construction. As sellers of transport logistics services we have focused on: Road transport, Rail transport, Sea transport, and Forwarders. During the work we have ended up in a broad perspective when defining decoupling. In general we work with the concept of decoupling defined as 'breaking the connection between the environmentally negative impacts from transport logistics and economic growth'. The negative impacts we include are: Resource use, Climate, Nature, Health, and Accidents. Our focus is a European perspective from a Swedish platform and our time perspective is from relatively narrow to 2020. The business sector raises doubt on the idea of decoupling transport work and GNP. They are however more positive when discussing decoupling economic growth from negative environmental impacts. When analysing the underlying factors for this development we can se a tremendous growth in the global trade. the paper discuses how

  16. Logistics aspects of pipeline transport in the supply of petroleum products

    Directory of Open Access Journals (Sweden)

    Wessel Pienaar

    2008-09-01

    activities are involved in the flow of goods between place of origin and place of consumption or application:Demand forecasting, Facility site selection, Procurement,Materials handling, Packaging, Warehouse management, Inventory management,Order processing, Logistics communications, Transport, Reverse logistics. Because cost is incurred without adding value each time goods are handled (activity 4 at a terminal or storage facility, a primary logistics objective is to eliminate handling wherever possible. With the carriage of crude oil and petroleum products by pipeline this objective is fully met. Commodity intake, haulage, and discharge are combined in one process, usually a remote-controlled operation. Pipeline transport is a non-containerised bulk mode of transport thereby obviating the need for packaging (activity 5 and returning empty containers. Pipelines provide a direct and long-term link between these origins and destinations. If necessary a continuous service can be provided with no need for a return trip or a reverse pumping process (activity 11.The elimination of handling, packaging and reverse logistics activities contribute substantially to the high measure of economies of scale that pipeline transport enjoys. The article provides adscription of each of the eleven logistics activities in the context of pipeline transport. Effective logistics service is a prerequisite to help ensure that customers receive the required products at the desired quality and quantity, where and when needed. The most pertinent determinants of logistics service performance aresuitability, accessibility, goods security, transit time, reliability and flexibility. The article offers a discussion of the extent to which pipeline transport conforms to each of these measures of effectiveness.

  17. Generation of accurate benchmarks for transport in stochastic media by means of dynamic error control

    International Nuclear Information System (INIS)

    The assessment of proposed numerical methods for radiation transport in stochastic media requires accurate benchmarks for comparison. Although published benchmarks exist, the errors in these benchmarks were minimized through conservative approaches rather than by explicit measurement and estimation. We report on our efforts to directly control the statistical, discretization, and iterative errors of benchmark calculations for transport in such media. We examine a variety of error control mechanisms and measure their effect on the actual error in the subsequent results. We find that simultaneous control of all of the desired quantities of interest yields better results than the use of a single control mechanism. We also find that the ensemble-averaged results are less sensitive to error control issues than individual realizations are. In addition we show that published benchmarks are generally over resolved for the desired level of statistical error, but that in a few cases an insufficient number of realizations were used. These observations are useful for more computationally efficient generation of stochastic media benchmarks with better characterized errors. (author)

  18. INFLUENCE OF TRANSPORT FACTOR ON STOCKS IN LOGISTICS CHAINS OF RESOURCE BEHAVIOU

    Directory of Open Access Journals (Sweden)

    I. A. Lebedeva

    2014-11-01

    Full Text Available The paper considers behaviour of material flows at stages of complicated  logistic industrial and transport systems. Key parameters of logistic delivery schemes are analyzed in the paper. The paper estimates an influence of a time parameter on the level of transport and logistics costs and, as a consequence, on  a final finished product.While determining a stock level it is necessary to know not only an intensity of material resource consumption by manufacturing process  for a concrete period of time, but also a probability of non-observance of   transport service terms and cost of stock storage. Stocks of mass cargoes are basically formed at first stages of industrial and transport system and cost of their storage is relatively insignificant. However deficit presence of the given resources influences on functioning of all subsequent interrelated stages of the industrial and transport system.Thus, a risk of deficit occurrence of the given resources can be probably reduced by creating a high stock rate. There is a processing of hi-tech component items (or half-finished products at last stages of the industrial and transport system. Expenses on storage of such resources  are usually high and possibility of their substitution by analogous ones is insignificant. At last stages a mobilization of facilities for provision of on-time delivery is more profitable that allows to save on stock arrangement.

  19. Analytical three-dimensional neutron transport benchmarks for verification of nuclear engineering codes. Final report

    International Nuclear Information System (INIS)

    Because of the requirement of accountability and quality control in the scientific world, a demand for high-quality analytical benchmark calculations has arisen in the neutron transport community. The intent of these benchmarks is to provide a numerical standard to which production neutron transport codes may be compared in order to verify proper operation. The overall investigation as modified in the second year renewal application includes the following three primary tasks. Task 1 on two dimensional neutron transport is divided into (a) single medium searchlight problem (SLP) and (b) two-adjacent half-space SLP. Task 2 on three-dimensional neutron transport covers (a) point source in arbitrary geometry, (b) single medium SLP, and (c) two-adjacent half-space SLP. Task 3 on code verification, includes deterministic and probabilistic codes. The primary aim of the proposed investigation was to provide a suite of comprehensive two- and three-dimensional analytical benchmarks for neutron transport theory applications. This objective has been achieved. The suite of benchmarks in infinite media and the three-dimensional SLP are a relatively comprehensive set of one-group benchmarks for isotropically scattering media. Because of time and resource limitations, the extensions of the benchmarks to include multi-group and anisotropic scattering are not included here. Presently, however, enormous advances in the solution for the planar Green's function in an anisotropically scattering medium have been made and will eventually be implemented in the two- and three-dimensional solutions considered under this grant. Of particular note in this work are the numerical results for the three-dimensional SLP, which have never before been presented. The results presented were made possible only because of the tremendous advances in computing power that have occurred during the past decade

  20. Factors Influencing ICT Adoption in Halal Transportations: A Case Study of Malaysian Halal Logistics Service Providers

    Directory of Open Access Journals (Sweden)

    Mohd Iskandar Illyas Tan

    2012-01-01

    Full Text Available The purpose of this study is i to investigate the factors that influence the adoption of Information and Communication Technology (ICT in Halal transportations and logistics and ii to develop an ICT adoption framework for Halal logistic service providers (LSPs. The Halal LSPs selected for the study currently used ICT service platforms, such as accounting and management system for Halal logistic business. The study categorizes the factors influencing the adoption decision and process by LSPs into four groups: technological related factors, Halal assurance related factors, organizational and environmental related factors. The major contribution in this study is the discovery that technological related factors (ICT compatibility with Halal requirement and Halal assurance related factors are the most affecting factors among the Halal LSPs applying ICT for Halal performances control in transportations operation. Among the environmental related factors, ICT requirement for monitoring Halal included in Halal Logistic Standard on Transportation (MS2400:2010 are the most influencing factors in the adoption of ICT with the support of the government. In addition, the government related factors are very important in the reducing the main barriers and the creation of the atmosphere of ICT adoption in Halal LSP sector.

  1. Macroeconomic surroundings of transport and logistics sector in Poland during the global economic crisis

    Directory of Open Access Journals (Sweden)

    Ryszard Rolbiecki

    2012-03-01

    Full Text Available During the last quarter of 2009, Poland has entered a phase of economic growth. Presently, despite the emerging financial problems in the EU zone, positive market sig-nals can still be observed in Poland, for example increase in domestic and external de-mand, incoming orders in the industry sector and production capacity in companies. The-se changes enhance growth of production in the industry and construction sectors, which are perceived as key sectors for generating demand for transport services. Therefore the lack of market signals that indicate economic slowdown means that the conditions for transport and logistics sector development in Poland are not expected to deteriorate. The key threat to the stability of economic growth in Poland, and in consequence to transport and logistics companies, is the excess debt of public finance sector.

  2. Some issues of logistics management applied to the passenger transportation process on suburban routes

    Directory of Open Access Journals (Sweden)

    Тetyana М. Grigorova

    2014-12-01

    Full Text Available Considered are some questions that address the problem of logistic management of suburban transport services. Using the logistic approach to the passenger transportation process management we get possibility to determine the need for consideration of the transport process parameters’ impact on the passengers’ fatigability that affects their productivity in the workplace. Basing on the analysis of the results obtained in-field, we implemented a mathematical description of the functional link between the passenger’s regulatory systems activity index, and the negatively affecting factors. It is revealed that the change in the passenger’s regulatory systems activity index on approaching the suburban line terminal station is described with sufficient accuracy by a non-linear regression equation, which includes as variables the regulatory systems activity index value before approaching to the station, the age of the passenger, the pedestrian walking pace, the time of approaching to the stop station.

  3. Logistics models for the transportation of radioactive waste and spent fuel

    International Nuclear Information System (INIS)

    Mathematical modeling of the logistics of waste shipment is an effective way to provide input to program planning and long-range waste management. Several logistics models have been developed for use in parametric studies, contingency planning, and management of transportation networks. These models allow the determination of shipping schedules, optimal routes, probable transportation modes, minimal costs, minimal personnel exposure, minimal transportation equipment, etc. Such information will permit OWI to specify waste-receiving rates at various repositories in order to balance work loads, evaluate surge capacity requirements, and estimate projected shipping cask fleets. The programs are tailored to utilize information on the types of wastes being received, location of repositories and waste-generating facilities, shipping distances, time required for a given shipment, availability of equipment, above-ground storage capabilities and locations, projected waste throughput rates, etc. Two basic models have been developed. The Low-Level Waste Model evaluates the optimal transportation policy for shipping waste directly from the source to a final destination without any intermediate stops. The Spent Fuel Logistics Model evaluates the optimal transportation policy for shipping unreprocessed spent fuel from nuclear power plants (1) indirectly, that is, to an Away-From-Reactor (AFR) storage facility, with subsequent transhipment to a repository, or (2) directly to a repository

  4. Green Logistics in South Africa : A study of the managerial perceptions in the road transportation industry in South Africa

    OpenAIRE

    Sandén Gustafsson, Henrik; Göransson, Hampus

    2014-01-01

    The role of logistics has, over the last decade, evolved into a significant determinant in the operations of businesses. Increased efficiency and reduced operational costs can be established through a well-operated transportation system. Due to societies increased awareness for environmental issues, the logistics industry has been affected, which has led to a demand for development. Therefore, the concept of green logistics has become more common in the transportation industry. However, in So...

  5. An inquiry into the characteristics, applicability and prerequisites of Radio-Frequency Identification (RFID solutions in transport networks and logistics

    Directory of Open Access Journals (Sweden)

    Antoniu Ovidiu Balint

    2013-09-01

    Full Text Available The use of intelligent solution represents the key factor for developing both the logistics sector and the economic environment. This paper analyses the Radio-Frequency Identification (RFID technology and its role in the Supply Chain Management (SCM especially in logistics and transport networks. The main objective is to demonstrate that RFID represents a solution for improving the transport networks and logistics sector by implementing various complex and intelligent solutions that can improve the actual economic environment

  6. Implementation, capabilities, and benchmarking of Shift, a massively parallel Monte Carlo radiation transport code

    International Nuclear Information System (INIS)

    This paper discusses the implementation, capabilities, and validation of Shift, a massively parallel Monte Carlo radiation transport package developed and maintained at Oak Ridge National Laboratory. It has been developed to scale well from laptop to small computing clusters to advanced supercomputers. Special features of Shift include hybrid capabilities for variance reduction such as CADIS and FW-CADIS, and advanced parallel decomposition and tally methods optimized for scalability on supercomputing architectures. Shift has been validated and verified against various reactor physics benchmarks and compares well to other state-of-the-art Monte Carlo radiation transport codes such as MCNP5, CE KENO-VI, and OpenMC. Some specific benchmarks used for verification and validation include the CASL VERA criticality test suite and several Westinghouse AP1000® problems. These benchmark and scaling studies show promising results

  7. Unobserved Heterogeneity and International Benchmarking in Public Transport

    OpenAIRE

    Cullmann, Astrid; Farsi, Mehdi; Filippini, Massimo

    2009-01-01

    We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as separable factors. However, we argue that the entire production process is organized around different network structures. Therefore, they are inevitably non-separable from the observed inputs and outputs. Th...

  8. Increase of efficiency of interaction of production and transport in the logistic chains of material traffic of enterprises

    Directory of Open Access Journals (Sweden)

    Ekaterina SIZOVA

    2008-01-01

    Full Text Available The problems of interaction of production and transport in micro logistic flows of enterprises are considered. On the basis of identification of the characteristics of processes the substantive provisions of methodology of forming of material traffic chains in transport-freight complexes are developed, a model and algorithm of optimization of material traffic chains on a logistic criterion is offered

  9. Shielding benchmarks analysis for transport/storage casks

    International Nuclear Information System (INIS)

    The dose rate measurements of the TN 12/2, TN 28 VT and FS 65 has been used to evaluate the calculational procedures of Transnuclaire (TN). The three-dimensional (3D) Monte Carlo code TRIPOLI-3.4 which is used to optimize the shielding of TN casks, is applied to the analysis of a series of benchmarks. In the same cases the one-dimensional (1D) Sn code SN1D and the point kernel code MERCURE-V (3D) used for the more simplified calculations, are checked by the comparison with the measurements. The multi-group approximation used by the above codes, in order to reduces nuclear data, introduces errors due to the neutron cross-sections resonance treatment and the repartition of the gamma-ray spectrum (discrete) into an energy group structure. For a cask consisting of an iron shell of 250 mm of thickness, neutron dose rates can been underestimated of 50% if the resonances of the iron cross sections for high energy (above 1 MeV) are not taken into account. Also, depending on the energy group structure, gamma-ray dose rates can be over-estimated or under-estimated by the repartition of the gamma rays. The comparisons between measured and calculated dose rates are closer than 20% for the Monte Carlo calculations, 50% for the Sn calculations (1D) and a factor of 2 for the point kernel calculations. (author)

  10. Computational benchmarking of fast neutron transport throughout large water thicknesses; Benchmark theorique du transport de neutrons rapides a travers de larges epaisseurs d`eau

    Energy Technology Data Exchange (ETDEWEB)

    Risch, P.; Dekens, O.; Ait Abderrahim, H. [SCK-CEN, Fuel Research Department, (Belgium); Wouters, R. de [Tractebel, Energy Engineering, (Belgium)

    1997-10-01

    Neutron dosimetry experiments seem to point our difficulties in the treatment of large water thickness like those encountered between the core baffle and the pressure vessel. This paper describes the theoretical benchmark undertaken by EDF, SCK/CEN and TRACTEBEL ENERGY ENGINEERING, concerning the transport of fast neutrons throughout a one meter cube of water, located after a U-235 fission sources plate. The results showed no major discrepancies between the calculations up to 50 cm from the source, accepting that a P3 development of the Legendre polynomials is necessary for the Sn calculations. The main differences occurred after 50 cm, reaching 20 % at the end of the water cube. This results lead us to consider an experimental benchmark, dedicated to the problem of fast neutron deep penetration in water, which has been launched at SCK/CEN. (authors). 7 refs.

  11. Current status of a low-energy photon transport benchmark

    International Nuclear Information System (INIS)

    The scattered-energy spectra of monochronized synchrotron-radiation photons toward 90 deg C by samples (C, Cu, Pb) were measured using high-purity Ge detectors. The incident photons were in a linearly polarised beam of 20, 30 and 40 keV. To investigate the validity of the EGS4 code regarding photon transport in the keV region, we performed systematic comparisons of measurements and EGS4. EGS4 calculations were performed in default status and with improvements of low-energy photon transport (linearly polarised photon scattering, Doppler broadening, L-X and K-X). The measurement and calculations were compared in absolute values. Both the intensity and the shape of the peaks were compared. EGS4 calculations with improvements in low-energy photon transport agreed well with the measurements. (authors)

  12. International CO2 policy benchmark for the road transport sector. Results of a pilot study

    International Nuclear Information System (INIS)

    The idea to initiate a pilot for a CO2 policy benchmark for the transport sector was developed during the workshop 'Shared policy learning on transport and the environment' that took place on 15-16 March 2001 in The Hague, Netherlands. Growing CO2 emissions in the transport sector (18% across the EU in the period 1990-1999) turn out to be a continuous problem. Packages of policies and measures have evidently not been sufficient to achieve a reduction in energy use. Measures to improve efficiency of transport have indeed contributed to the slowdown of the growth in energy demand, but so far they have failed to actually stop the increase of transport related CO2 emissions. Most Member States have already gained (some) experience with transport-related CO2 policies and their effects, but it is essential to gain further insight in the pros and cons of various policies. Continued learning from experiences is needed to improve these policies and make them more effective and robust. In this pilot project policy experiences of different EU countries are shared. The objectives of the pilot project are: (1) To compare the country policies of a number of European countries with respect to actual CO2 emissions in the transport sector; (2) To benchmark a number of policy instruments that aim to reduce CO2 in the transport sector; and (3) To assess whether the instrument 'Benchmarking' can support environmental policy in the transport sector and to identify the conditions that need to be fulfilled for Benchmarking. These objectives have been established in a joint effort of country teams (Belgium, the Czech Republic, Denmark, Finland, France, Germany, Italy, the Netherlands, Spain, Sweden and the United Kingdom), the project team at the Dutch Transport Research Centre (AVV), specialists of international organisations (CEMT, EEA, Eurostat) and the consultant-team (ECN and COWI). The results of this project must be considered as a result of a pilot exercise. From this perspective

  13. A transport logistic and cost model for use in repository design specification

    International Nuclear Information System (INIS)

    UK Nirex Ltd (Nirex) is responsible for developing a deep repository for the disposal of the United Kingdom's intermediate level waste and some low level waste. It also needs to be able to predict the total cost of the transport operations, and to compute the costs attributable to different combinations of sites and types of waste packages. This paper draws on work carried out as part of the assessment of Sellafield as a potential repository site, but will also show that many aspects of the transport system are independent of the actual repository location. To analyze the effects of all these possible scenarios and proposed operating practices on the costs and logistics of radioactive waste transport, Nirex commissioned the development of a flexible computer model from a software developer with the appropriate expertise. This paper describes how the LOGCOST model has been used to provide the information required for the repository design specification, and how it can readily be adapted to different potential repository locations and to changing requirements. In conclusion, it can be said that LOGCOST is a very effective transport and logistics model based on the Excel spread-sheet. The examples given have shown how LOGCOST can provide detailed predictions of radioactive waste transport costs, and how LOGCOST can be readily adapted to a new repository site or any other focal point for a transport network. (O.M.)

  14. Radiation transport benchmarks for simple geometries with void regions using the spherical harmonics method

    International Nuclear Information System (INIS)

    In 2001, an international cooperation on the 3D radiation transport benchmarks for simple geometries with void region was performed under the leadership of E. Sartori of OECD/NEA. There were contributions from eight institutions, where 6 contributions were by the discrete ordinate method and only two were by the spherical harmonics method. The 3D spherical harmonics program FFT3 by the finite Fourier transformation method has been improved for this presentation, and benchmark solutions for the 2D and 3D simple geometries with void region by the FFT2 and FFT3 are given showing fairly good accuracy. (authors)

  15. Technologies and technical tools of combined transportation of cargoes by factors of global logistics

    Directory of Open Access Journals (Sweden)

    Анатолій Миколайович Котенко

    2015-01-01

    Full Text Available The new piggybacks technology has been developed and presented taking into account the problems of global logistics. The technology allows cargo operations (loading and unloading of modules on platforms of varying floor height above rail head level and reload modules between platforms with different values and different ways between rails floor height platforms. The system of differential equations of Kolmogorov have been showed and modeling of combined transportation have been made

  16. Logistics outsourcing by Taiwanese and Dutch food processing industries

    NARCIS (Netherlands)

    Hsin-I Hsiao, L.; Kemp, R.G.M.; Vorst, van der J.G.A.J.; Omta, S.W.F.

    2011-01-01

    Purpose – This paper aims to investigate outsourcing of different types of logistics activities in Taiwanese food industry, and benchmark with practices in The Netherlands. Design/methodology/approach – The outsourcing of four levels of logistics activities is investigated: transportation (level 1),

  17. A Benchmarking Initiative for Reactive Transport Modeling Applied to Subsurface Environmental Applications

    Science.gov (United States)

    Steefel, C. I.

    2015-12-01

    Over the last 20 years, we have seen the evolution of multicomponent reactive transport modeling and the expanding range and increasing complexity of subsurface environmental applications it is being used to address. Reactive transport modeling is being asked to provide accurate assessments of engineering performance and risk for important issues with far-reaching consequences. As a result, the complexity and detail of subsurface processes, properties, and conditions that can be simulated have significantly expanded. Closed form solutions are necessary and useful, but limited to situations that are far simpler than typical applications that combine many physical and chemical processes, in many cases in coupled form. In the absence of closed form and yet realistic solutions for complex applications, numerical benchmark problems with an accepted set of results will be indispensable to qualifying codes for various environmental applications. The intent of this benchmarking exercise, now underway for more than five years, is to develop and publish a set of well-described benchmark problems that can be used to demonstrate simulator conformance with norms established by the subsurface science and engineering community. The objective is not to verify this or that specific code--the reactive transport codes play a supporting role in this regard—but rather to use the codes to verify that a common solution of the problem can be achieved. Thus, the objective of each of the manuscripts is to present an environmentally-relevant benchmark problem that tests the conceptual model capabilities, numerical implementation, process coupling, and accuracy. The benchmark problems developed to date include 1) microbially-mediated reactions, 2) isotopes, 3) multi-component diffusion, 4) uranium fate and transport, 5) metal mobility in mining affected systems, and 6) waste repositories and related aspects.

  18. A logistic and cost model for the transport of radioactive waste to a repository

    International Nuclear Information System (INIS)

    UK Nirex Ltd is planning a deep repository for intermediate level radioactive waste, and also some low level waste. Part of this work is to develop a transport system to bring the packaged waste to the repository from nuclear industry sites across the United Kingdom. To assess the logistics and costs of this transport system and to provide inputs to the repository specification and design, Nirex has commissioned the development of a flexible computer model which can be used on a desktop PC. The requirements for the LOGCOST model are explained, and the solutions adopted, and then examples shown of the graphical and tabular outputs that LOGCOST can provide. (Author)

  19. Prospects for Research in Transport and Logistics on a Regional: Global Perspective (I: February 2009: İstanbul: Turkey)

    OpenAIRE

    Ülengin, Füsun

    2009-01-01

    Committees, i -- Words of Welcome and Gratitude, ii -- Introduction, iii -- Chapter 1 Global Issues in Logistics and Transportation, 1 -- Potential to Reduce GHG through Efficient Logistic Concepts, 3 -- Werner Rothengatter -- A methodological framework for the evaluation and prioritisation of multinational transport projects: the Case of euro-asian transport linkages, 21 / Dimitrios TSAMBOULAS, Angeliki KOPSACHEILI -- Container port throughput performance - case study: Far east, north west e...

  20. Parallel PENTRAN solutions of the 'TIEL' steady state neutron transport benchmark problems

    International Nuclear Information System (INIS)

    The TIEL benchmarks include a set of analytical benchmark solutions to the transport equation in infinite media. In this paper, we present solutions for the infinite planar, point, spherical shell, and solid spherical sources solved using the PENTRAN 3-D Parallel SN code compared to reference solutions of the TIEL benchmark problems. Excellent agreement (less than 0.7% difference) was achieved when comparing reference solutions with PENTRAN scalar fluxes in the case of planar, shell and solid sphere sources. Depending on the scattering properties and the geometry of the system, Legendre-Chebychev quadratures as high as S34 for the planar or S54 for the spherical symmetry sources, with appropriate spatial discretization, were needed to properly represent the flux. Inherent numerical difficulties were encountered when finding the solution in the very close proximity (< 0.1 mfp) of the sources. (authors)

  1. Neutron transport benchmark examples with web-based AGENT

    International Nuclear Information System (INIS)

    The AGENT (Arbitrary GEometry Neutron Transport) an open-architecture reactor modeling tool is deterministic neutron transport code for two- or three-dimensional heterogeneous neutronic design and analysis of the whole reactor cores regardless of geometry types and material configurations. The AGENT neutron transport methodology is applicable to all generations of nuclear power and research reactors. It combines three theories: (1) mathematical theory of R-functions that is used to generate real three-dimensional geometries of square or hexagonal heterogeneous geometries, (2) the x-y method of characteristics (MOC) used to solve isotropic neutron transport in non-homogenized 2D reactor slices, and (3) the one-dimensional diffusion theory or MOC theory used to couple the x-y and z neutron tracks through the transverse leakage and angular mesh-wise flux values. The R-function geometrical module allows a sequential building of the layers of geometry and automatic submeshing based on the network of geometric domain functions. The simplicity of geometry description and selection of parameters for accurate treatment of neutron propagation is achieved through the Boolean algebraic hierarchically organized simple primitives into complex domains (both being represented with corresponding domain functions). AGENT methodologies and numerical solutions are applicable in validating neutronic analysis for GenIV reactor designs while the effect of double heterogeneity in very high temperature reactors (VHTRs) is under development. The accuracy is comparable to Monte Carlo codes and is obtained by following neutron propagation through real geometrical domains that does not require homogenization or simplifications. The efficiency is maintained through set of acceleration techniques introduced at all important calculation levels. The flux solution incorporates power iteration with two different acceleration techniques: coarse mesh rebalancing (CMR) and coarse mesh finite difference

  2. Benchmarking of the mono-energetic transport coefficients-results from the International Collaboration on Neoclassical Transport in Stellarators (ICNTS)

    International Nuclear Information System (INIS)

    Numerical results for the three mono-energetic transport coefficients required for a complete neoclassical description of stellarator plasmas have been benchmarked within an international collaboration. These transport coefficients are flux-surface-averaged moments of solutions to the linearized drift kinetic equation which have been determined using field-line-integration techniques, Monte Carlo simulations, a variational method employing Fourier-Legendre test functions and a finite-difference scheme. The benchmarking has been successfully carried out for past, present and future devices which represent different optimization strategies within the extensive configuration space available to stellarators. A qualitative comparison of the results with theoretical expectations for simple model fields is provided. The behaviour of the results for the mono-energetic radial and parallel transport coefficients can be largely understood from such theoretical considerations but the mono-energetic bootstrap current coefficient exhibits characteristics which have not been predicted. (special topic)

  3. Intensification of Development of Mixed Transportation of Freight in Ukraine through Formation of the Network of Transportation and Logistic Centres and Transportation and Logistic Clusters

    OpenAIRE

    Karpenko Oksana O.; Babyna Olena Ye.

    2013-01-01

    Development of mixed transportation is a prospective direction of development of the transportation system of Ukraine. The article analyses the modern state of development of mixed transportation of freight in Ukraine. The most popular types of combined transportation (refers to multi-modal) are container and contrailer trains, which are formed both in Ukraine (Viking and Yaroslav) and in other countries, first of all, Belarus (Zubr). One of the reasons of underdevelopment of mixed transporta...

  4. Application of the hybrid diffusion-transport spatial homogenization method to a high temperature test reactor benchmark problem

    International Nuclear Information System (INIS)

    The recently developed Hybrid Diffusion-Transport Spatial Homogenization (DTH) Method was previously tested on a benchmark problem typical of a boiling water reactor. In this paper, the DTH method is tested in a 1-D benchmark problem based on the Japanese High Temperature Test Reactor (HTTR). This acts as a verification of the method for a reactor that is optically thinner than the original BWR test benchmark. (author)

  5. Domain decomposition PN solutions to the 3D transport benchmark over a range in parameter space

    International Nuclear Information System (INIS)

    The objectives of this contribution are twofold. First, the Domain Decomposition (DD) method used in the PARAFISH parallel transport solver is re-interpreted as a Generalized Schwarz Splitting as defined by Tang [SIAM J Sci Stat Comput, vol.13 (2), pp. 573-595, 1992]. Second, PARAFISH provides spherical harmonic (i.e., PN) solutions to the NEA benchmark suite for 3D transport methods and codes over a range in parameter space. To the best of the author's knowledge, these are the first spherical harmonic solutions provided for this demanding benchmark suite. They have been obtained using 512 CPU cores of the JuRoPa machine installed at the Juelich Computing Center (Germany). (author)

  6. Criticality benchmark guide for light-water-reactor fuel in transportation and storage packages

    International Nuclear Information System (INIS)

    This report is designed as a guide for performing criticality benchmark calculations for light-water-reactor (LWR) fuel applications. The guide provides documentation of 180 criticality experiments with geometries, materials, and neutron interaction characteristics representative of transportation packages containing LWR fuel or uranium oxide pellets or powder. These experiments should benefit the U.S. Nuclear Regulatory Commission (NRC) staff and licensees in validation of computational methods used in LWR fuel storage and transportation concerns. The experiments are classified by key parameters such as enrichment, water/fuel volume, hydrogen-to-fissile ratio (H/X), and lattice pitch. Groups of experiments with common features such as separator plates, shielding walls, and soluble boron are also identified. In addition, a sample validation using these experiments and a statistical analysis of the results are provided. Recommendations for selecting suitable experiments and determination of calculational bias and uncertainty are presented as part of this benchmark guide

  7. Benchmark solutions for the galactic heavy-ion transport equations with energy and spatial coupling

    Science.gov (United States)

    Ganapol, Barry D.; Townsend, Lawrence W.; Lamkin, Stanley L.; Wilson, John W.

    1991-01-01

    Nontrivial benchmark solutions are developed for the galactic heavy ion transport equations in the straightahead approximation with energy and spatial coupling. Analytical representations of the ion fluxes are obtained for a variety of sources with the assumption that the nuclear interaction parameters are energy independent. The method utilizes an analytical LaPlace transform inversion to yield a closed form representation that is computationally efficient. The flux profiles are then used to predict ion dose profiles, which are important for shield design studies.

  8. Business process integration between European manufacturers and transport and logistics service providers

    DEFF Research Database (Denmark)

    Mortensen, Ole; Lemoine, W

    2005-01-01

    total integration. This study illustrates, from an empirical point of view, the problems associated to SC integration among European firms operating in global/international markets. The focus is on the relationship between two echelons in the supply chain: manufacturers and their transport and logistics...... service providers (TLSPs). The paper examines (1) the characteristics of the collaborative partnerships established between manufacturers and their TLSPs; (2) to what extent manufacturers and their TLSPs have integrated SC business processes; (3) the IT used to support the SC cooperation and integration...

  9. Computational Logistics

    DEFF Research Database (Denmark)

    Pacino, Dario; Voss, Stefan; Jensen, Rune Møller

    2013-01-01

    This book constitutes the refereed proceedings of the 4th International Conference on Computational Logistics, ICCL 2013, held in Copenhagen, Denmark, in September 2013. The 19 papers presented in this volume were carefully reviewed and selected for inclusion in the book. They are organized...... in topical sections named: maritime shipping, road transport, vehicle routing problems, aviation applications, and logistics and supply chain management....

  10. Computational Logistics

    DEFF Research Database (Denmark)

    This book constitutes the refereed proceedings of the 4th International Conference on Computational Logistics, ICCL 2013, held in Copenhagen, Denmark, in September 2013. The 19 papers presented in this volume were carefully reviewed and selected for inclusion in the book. They are organized in...... topical sections named: maritime shipping, road transport, vehicle routing problems, aviation applications, and logistics and supply chain management....

  11. Computational Logistics

    DEFF Research Database (Denmark)

    Jensen, Rune Møller; Pacino, Dario; Voß, Stefan

    2013-01-01

    This book constitutes the refereed proceedings of the 4th International Conference on Computational Logistics, ICCL 2013, held in Copenhagen, Denmark, in September 2013. The 19 papers presented in this volume were carefully reviewed and selected for inclusion in the book. They are organized in...... topical sections named: maritime shipping, road transport, vehicle routing problems, aviation applications, and logistics and supply chain management....

  12. The suite of analytical benchmarks for neutral particle transport in infinite isotropically scattering media

    International Nuclear Information System (INIS)

    The linear Boltzmann equation for the transport of neutral particles is investigated with the objective of generating benchmark-quality evaluations of solutions for homogeneous infinite media. In all cases, the problems are stationary, of one energy group, and the scattering is isotropic. The solutions are generally obtained through the use of Fourier transform methods with the numerical inversions constructed from standard numerical techniques such as Gauss-Legendre quadrature, summation of infinite series, and convergence acceleration. Consideration of the suite of benchmarks in infinite homogeneous media begins with the standard one-dimensional problems: an isotropic point source, an isotropic planar source, and an isotropic infinite line source. The physical and mathematical relationships between these source configurations are investigated. The progression of complexity then leads to multidimensional problems with source configurations that also emit particles isotropically: the finite line source, the disk source, and the rectangular source. The scalar flux from the finite isotropic line and disk sources will have a two-dimensional spatial variation, whereas a finite rectangular source will have a three-dimensional variation in the scalar flux. Next, sources emitting particles anisotropically are considered. The most basic such source is the point beam giving rise to the Green's function, which is physically the most fundamental transport problem, yet may be constructed from the isotropic point source solution. Finally, the anisotropic plane and anisotropically emitting infinite line sources are considered. Thus, a firm theoretical and numerical base is established for the most fundamental neutral particle benchmarks in infinite homogeneous media

  13. 77 FR 25169 - Shipco Transport Inc. v. Jem Logistics, Inc., and Andi Georgescu, an Individual and D/B/A Jem...

    Science.gov (United States)

    2012-04-27

    ... Shipco Transport Inc. v. Jem Logistics, Inc., and Andi Georgescu, an Individual and D/B/A Jem Logistics... ``Complainant,'' against Jem Logistics, Inc., and Andi Georgescu, an individual and doing business as Jem Logistics, Inc., hereinafter ``Respondents.'' Complainant asserts that it is a non- vessel-operating...

  14. Transport and supply logistics of biomass fuels: Vol. 2. Biomass and strategic modelling

    Energy Technology Data Exchange (ETDEWEB)

    Allen, J.; Browne, M.; Cook, A.; Wicks, N.; Palmer, H.; Hunter, A.; Boyd, J.

    1996-10-01

    This document forms part of the United Kingdom Department of Trade and Industry project ''Transport and Logistics of Biomass Fuels'', which aimed to describe the distribution of existing and potential biomass resources in terms of their supply potential for power stations. Fixed areas of supply, or catchments, have been identified on colour maps of Britain showing the distribution of forest fuel, short rotation coppices, and various types of straw and animal slurry, using a specially written strategic modelling program. Adequate supplies of biomass resources are shown to exist in Britain, but siting of power stations to exploit these resources, will depend on transport and economic considerations appropriate at the time of construction. Biomass power stations in the megawatt capacity range could be resourced. (UK)

  15. Logistic characteristics of phonon transport in silicon thin film: the S-curve

    Science.gov (United States)

    Yilbas, B. S.; Mansoor, S. Bin

    2013-10-01

    The logistic characteristics of the averaged heat flux are investigated across the thin film incorporating the S-curve. Temporal behaviour of the heat flux vector is computed using the Boltzmann transport equation. The dispersion relations are introduced to account for the frequency dependent phonon transport across the film. The influence of film width on the characteristics of the averaged heat flux is also examined. It is found that temporal behaviour of the averaged heat flux follows the S-curve. The S-curve characteristics change for different film widths. The time to reach 95% steady value of the averaged heat flux is short for the film with small widths, which is attributed to the ballistic behaviour of phonons in the film.

  16. The Transportation Logistics of Manufactured Products in the Colombian Internal Market

    Directory of Open Access Journals (Sweden)

    Edisson Castro Escobar

    2014-12-01

    Full Text Available This paper tracks the transport logistics of the Colombian manufacturing industry in the domestic market, analyzing the direction and the volume of the cargo moved by road. The study is intended to identify some sectorial and regional enclaves of the industry that could be strategic for market diversification and to facilitate production chains. Estimates of land freight movements are made based on the origin-destination survey carried out by the Ministry of Transportation in 2008. The different regional and sectorial flows are projected through a geodetic network model. The results indicate that regional differences in product specialization explain the movement of cargo from specific industries, while in other cases there are no significant flows because the industries largely serve local markets.

  17. Logistic characteristics of phonon transport in silicon thin film: the S-curve

    International Nuclear Information System (INIS)

    The logistic characteristics of the averaged heat flux are investigated across the thin film incorporating the S-curve. Temporal behaviour of the heat flux vector is computed using the Boltzmann transport equation. The dispersion relations are introduced to account for the frequency dependent phonon transport across the film. The influence of film width on the characteristics of the averaged heat flux is also examined. It is found that temporal behaviour of the averaged heat flux follows the S-curve. The S-curve characteristics change for different film widths. The time to reach 95% steady value of the averaged heat flux is short for the film with small widths, which is attributed to the ballistic behaviour of phonons in the film

  18. Optimizing transport logistics taking into account the state of roads and road traffic

    Directory of Open Access Journals (Sweden)

    Shikul’skaya Ol’ga Mikhaylovna

    2015-12-01

    Full Text Available The choice and use of rational routes at strict observance of deliveries terms help to achieve not only minimization of operational expenses, but also to reduce commodity and production stocks in warehouses by 1,5...2 times. Therefore special relevance is gained by the works allowing precisely calculating the volumes of a cargo transportation, to count the quantity of transport units necessary for providing cargo flow, to define the rational routes of transportation, and also to reduce total costs of transportation. On the basis of the analysis of the known mathematical methods applied in transport logistics, the authors drew a conclusion that the route of freight delivery is estimated according to the distance passed by the vehicle. However the time of freight delivery depends not only on distance, but also on a set of other factors, such as vehicle type, road capacity, intensity of transport stream, weather conditions, season and others. For taking note of additional factors when optimizing a freight delivery route the method of analogy and similarity is used by the authors. The transportation parameters were estimated by analogy with an electric chain. For this purpose the authors entered the new concepts “fictitious distance” and “conductivity of the road”. The mathematical model allowing optimizing the organization of freight delivery taking into account not only distances, but also the probable speed of the vehicle movement depending on the road quality, intensity of transport stream and weather conditions is developed. Further development of the system of decision-making support while choosing the optimum route of cargo delivery is planned.

  19. Implementation, capabilities, and benchmarking of Shift, a massively parallel Monte Carlo radiation transport code

    Science.gov (United States)

    Pandya, Tara M.; Johnson, Seth R.; Evans, Thomas M.; Davidson, Gregory G.; Hamilton, Steven P.; Godfrey, Andrew T.

    2016-03-01

    This work discusses the implementation, capabilities, and validation of Shift, a massively parallel Monte Carlo radiation transport package authored at Oak Ridge National Laboratory. Shift has been developed to scale well from laptops to small computing clusters to advanced supercomputers and includes features such as support for multiple geometry and physics engines, hybrid capabilities for variance reduction methods such as the Consistent Adjoint-Driven Importance Sampling methodology, advanced parallel decompositions, and tally methods optimized for scalability on supercomputing architectures. The scaling studies presented in this paper demonstrate good weak and strong scaling behavior for the implemented algorithms. Shift has also been validated and verified against various reactor physics benchmarks, including the Consortium for Advanced Simulation of Light Water Reactors' Virtual Environment for Reactor Analysis criticality test suite and several Westinghouse AP1000® problems presented in this paper. These benchmark results compare well to those from other contemporary Monte Carlo codes such as MCNP5 and KENO.

  20. A new numerical benchmark for variably saturated variable-density flow and transport in porous media

    Science.gov (United States)

    Guevara, Carlos; Graf, Thomas

    2016-04-01

    In subsurface hydrological systems, spatial and temporal variations in solute concentration and/or temperature may affect fluid density and viscosity. These variations could lead to potentially unstable situations, in which a dense fluid overlies a less dense fluid. These situations could produce instabilities that appear as dense plume fingers migrating downwards counteracted by vertical upwards flow of freshwater (Simmons et al., Transp. Porous Medium, 2002). As a result of unstable variable-density flow, solute transport rates are increased over large distances and times as compared to constant-density flow. The numerical simulation of variable-density flow in saturated and unsaturated media requires corresponding benchmark problems against which a computer model is validated (Diersch and Kolditz, Adv. Water Resour, 2002). Recorded data from a laboratory-scale experiment of variable-density flow and solute transport in saturated and unsaturated porous media (Simmons et al., Transp. Porous Medium, 2002) is used to define a new numerical benchmark. The HydroGeoSphere code (Therrien et al., 2004) coupled with PEST (www.pesthomepage.org) are used to obtain an optimized parameter set capable of adequately representing the data set by Simmons et al., (2002). Fingering in the numerical model is triggered using random hydraulic conductivity fields. Due to the inherent randomness, a large number of simulations were conducted in this study. The optimized benchmark model adequately predicts the plume behavior and the fate of solutes. This benchmark is useful for model verification of variable-density flow problems in saturated and/or unsaturated media.

  1. Development of a 3D neutron transport code and benchmark tests

    International Nuclear Information System (INIS)

    Results are reported of NEACRP '3D Neutron Transport Benchmarks' proposed from Osaka UNiversity, and of recent progress in the development of a 3D neutron transport code. Takeda et al. proposed four problems to NEACRP as 3D neutron transport benchmarks, and 22 results from 20 organizations were submitted. A variety of methods have been used, such as the Monte Carlo, Sn, Pn, synthetic, and nodal method. The results for k-eff, control-rod worths, and region-averaged fluxes are summarized with the conclusions that (1) in XYZ geometry the Sn method with n=8 shows a good agreement with the Monte-Carlo method, and gives even better results in some cases, (2) the Pn method has significant spatial mesh effects, and (3) the Sn method is not satisfactory in hexagonal-Z geometry, and improvements in accuracy are desirable. Improvement of a 3D neutron transport code is in progress to resolve the problem in the hexagonal-Z geometry by considering new diamond difference schemes and an improved coarse-mesh method, and also by applying the nodal method. (author)

  2. PWR assembly transport calculation: A validation benchmark using DRAGON, PENTRAN, and MCNP

    International Nuclear Information System (INIS)

    This paper presents a 2D PWR fuel assembly benchmark performed with 3 transport codes: DRAGON which uses the collision probability method, PENTRAN, an Sn transport code, and MCNP, a Monte Carlo code. First, DRAGON was used to produce a 2-group pin-by-pin cross-section library associated with 45 materials that describe the fuel assembly. Using the same library, it was then possible to perform comparisons between DRAGON and MCNP, and between PENTRAN and MCNP. Here, MCNP was considered as the reference multigroup Monte Carlo tool used to validate the deterministic codes. This type of 2-group benchmark can be utilized to evaluate the performance of different solvers using the very same cross-sections. The transport solutions provided here May be used as references for further comparisons with industrial reactor core codes using a diffusion or a SPn solver, and generally relying on 2-group cross-sections. Results show an excellent overall agreement between the 3 codes, with discrepancies that are less than 0.5% on the pin-by-pin flux, and less than 20 pcm on the keff. Therefore, it May be concluded that these deterministic codes are reliable tools to perform criticality transport calculations for PWR lattices. Moreover, the use of multigroup Monte Carlo appears as an efficient independent technique to perform detailed code to code comparisons relying on the same cross-section library. The present work May be considered as the first step of a 3D PWR core benchmark using DRAGON generated cross-sections and comparing PENTRAN and MCNP multigroup calculations. (authors)

  3. You've Got to Move It, Move It--Adding Logistics and Distribution to the Transportation Curriculum

    Science.gov (United States)

    Roads, David R.

    2012-01-01

    Long gone are the days when the study of the internal combustion engine was the core of the transportation curriculum offered in most middle schools and high schools. To be competitive and successful, today's students need a more global understanding of transportation, distribution, and logistics systems. In response to this shift to include…

  4. Analysis of transport logistics and routing requirements for radioactive waste management systems with respect to a minimum power scenario

    International Nuclear Information System (INIS)

    This report assesses the transport logistics associated with disposal of intermediate-level radioactive waste, as generated by CEGB, SSEB, UKAEA and BNFL, in accordance with a 'Minimum Power Scenario'. Transport by road and rail is analysed, as in previous reports; use of coastal shipping however has not been included but has been replaced with a combined road/rail option. (author)

  5. Establishment of consistent benchmark framework for performing high-fidelity whole core transport/diffusion calculations

    International Nuclear Information System (INIS)

    This paper presents a benchmark framework established as a basis for investigation of the validity of multi-group approximation with respect to the continuous energy approach, of the level of spatial homogenization with respect to heterogeneous solution, and of the level of angular approximation to the linear Boltzmann transport equation in respect to the Monte Carlo reference solution. Several steady-state solutions of this benchmark have been generated using three different computer codes focusing on the two-dimensional (2-D) geometry model. MCNP5 has been used to generate the reference solution using the continuous energy library. HELIOS is then used for both to solve the problem using a 45 group cross-section library and to generate new sets of few-group cross-sections for the core simulator NEM. The results from the diffusion option of the NEM code on pin-by-pin and Fuel Assembly (FA) basis are presented and discussed in the paper. The benchmark is being designed for evaluation of number of energy groups (number of energy groups and energy cut off points) and spatial (homogenized assembly level vs. homogenized pin cell level) representation needed for high-fidelity reactor core calculation schemes developed at the Pennsylvania State Univ. such as NEM SP3, hybrid NEM-BEM and some recent developments of embedded three-dimensional pin-by-pin diffusion / SP3 finite element calculation schemes. (authors)

  6. Benchmark experiment for the verification of radiation transport calculations for the radiotherapy dosimetry

    International Nuclear Information System (INIS)

    Monte Carlo simulations are regarded as the most accurate method of solving complex problems of radiation transport. Therefore, they have great potential to realize more exact dose calculations for treatment planning in radiation therapy. However, there is a lack of information on how correct the results of Monte Carlo calculations are on an absolute basis. A practical verification of the calculations can be performed by direct comparison with a benchmark experiment. Thereby, the uncertainties of the experimental result and of the simulation also have to be considered to make a meaningful comparison between the experiment and the simulation possible. This dissertation presents a benchmark experiment and its results, including the uncertainty, which can be used to test the accuracy of Monte Carlo calculations in the field of radiation therapy. The experiment was planned to have parallels to clinical radiation therapy, among other things, with respect to the radiation applied, the materials used and the manner of dose detection. The benchmark experiment aimed at an absolute comparison with a simulation result and because of this it was necessary to use a special research accelerator as a radiation source in the experiment. The accurate characterization of the accelerator beam was a precondition to define a realistic radiation source for the Monte Carlo simulation. Therefore, this work also deals with the characterization of the source and investigations regarding the X-ray target used. Additionally, the dissertation contains the verification of the widely used Monte Carlo program EGSnrc by the benchmark experiment. The simulation of the experiment by EGSnrc, the results and the estimation of the uncertainty related to the simulation are documented in this work.The results and findings of this dissertation end in a comparison between the results of the benchmark experiment and the corresponding calculations with EGSnrc. The benchmark experiment and the simulations

  7. 3-D radiation transport benchmarks for simple geometries with void regions

    International Nuclear Information System (INIS)

    Industry requires well-validated computation methods and computer codes for its nuclear applications. The predictive power of such tools must be established and users must be confident of their results. Model refinement requires that increasingly sophisticated tools be used. Moreover, the computing power available today no longer justifies a number of geometrical simplifications. This report describes the results of challenging international benchmarks in three-dimensional radiation transport that contribute to the evaluation and validation of state-of-the-art computation methods and computer codes. It will be of particular interest to reactor physicists and radiation shielding specialists. (author)

  8. Benchmark results for the critical slab and sphere problem in one-speed neutron transport theory

    International Nuclear Information System (INIS)

    Research highlights: → The critical slab and sphere problem in neutron transport under Case eigenfunction formalism is considered. → These equations reduce to integral expressions involving X functions. → Gauss quadrature is not ideal but DE quadrature is well-suited. → Several fold decrease in computational effort with improved accuracy is realisable. - Abstract: In this paper benchmark numerical results for the one-speed criticality problem with isotropic scattering for the slab and sphere are reported. The Fredholm integral equations of the second kind based on the Case eigenfunction formalism are numerically solved by Neumann iterations with the Double Exponential quadrature.

  9. Fusion neutronics calculational benchmarks for basic nuclear data and transport codes intercomparison

    International Nuclear Information System (INIS)

    Four calculational benchmarks have been selected to compare various nuclear data libraries based on both ENDF/B-IV and V, and to compare results from various transport codes. Discrepancies up to 20% in tritium production from 7Li were found and have been attributed mainly to differences in current ENDF/B-IV and V evaluations, while approx.4% is attributed to differences in the group structure of the libraries used. Results from MCNP and VIP Monte Carlo codes are in good agreement, but MORSE calculations show good agreement only for high threshold reactions

  10. The Importance of Transport and Logistics Services in Green Supply Chain Management

    Directory of Open Access Journals (Sweden)

    P.Bhanu Krishna,

    2012-11-01

    Full Text Available This paper is focused on the importance of transportation & logistics in green supply chain management (GSCM.It is very important for all the related industries to realize the importance of implementing best practices to protect the health of our planet Earth. If no attention is given to the environmental consequences and to ways of addressing environmental challenges in that sector, the beautiful promises of a better lifestyle associated with the information age will be tarnished by the poor quality of our essential commodities – clean air, clear water, and pristine soils. Although GSCM has been comprehensively reviewed, there are areas around Green supply chain that still require further study. One is a gap in the literature in terms of the stakeholder’s views towards green supply chain. Stakeholders would definitely have different views about this and can sometimes be conflicting from the company’s point of view. Some stakeholders would go against green supply chain management and some would not. This paper recommends that researchers should focus more towards qualitative study such as interviews in understanding the different stakeholder views towards green supply chain management to portray the different views about the concept and how this, in the end, implicates management decisions. This is done with the help of four methodologies viz. Reverse Logistics, Calculating the amount of Co2 released, shipment consolidation and Environmental Performance Index(EPI.

  11. Benchmarks and models for 1-D radiation transport in stochastic participating media

    Energy Technology Data Exchange (ETDEWEB)

    Miller, D S

    2000-08-21

    Benchmark calculations for radiation transport coupled to a material temperature equation in a 1-D slab and 1-D spherical geometry binary random media are presented. The mixing statistics are taken to be homogeneous Markov statistics in the 1-D slab but only approximately Markov statistics in the 1-D sphere. The material chunk sizes are described by Poisson distribution functions. The material opacities are first taken to be constant and then allowed to vary as a strong function of material temperature. Benchmark values and variances for time evolution of the ensemble average of material temperature energy density and radiation transmission are computed via a Monte Carlo type method. These benchmarks are used as a basis for comparison with three other approximate methods of solution. One of these approximate methods is simple atomic mix. The second approximate model is an adaptation of what is commonly called the Levermore-Pomraning model and which is referred to here as the standard model. It is shown that recasting the temperature coupling as a type of effective scattering can be useful in formulating the third approximate model, an adaptation of a model due to Su and Pomraning which attempts to account for the effects of scattering in a stochastic context. This last adaptation shows consistent improvement over both the atomic mix and standard models when used in the 1-D slab geometry but shows limited improvement in the 1-D spherical geometry. Benchmark values are also computed for radiation transmission from the 1-D sphere without material heating present. This is to evaluate the performance of the standard model on this geometry--something which has never been done before. All of the various tests demonstrate the importance of stochastic structure on the solution. Also demonstrated are the range of usefulness and limitations of a simple atomic mix formulation.

  12. Radio frequency identification (RFID technology for academic, logistics and passenger transport applications

    Directory of Open Access Journals (Sweden)

    John Jairo Ramírez Echeverry

    2012-12-01

    Full Text Available Radio frequency identification (RFID technology, from its beginning in the 1980s, has provided solutions in areas in which no identification (ID technology has done so before.  This paper presents three applications in areas having an issue in common: an RFID technology-based solution; these fields were academic topics, logistic support for an event and passenger land transport. Each project identified a problem which needed resolving, the methods and electronic devices used for such solution and the outcomes achieved. The developments shown in this paper indicated the multidisciplinary nature of RFID technology because it achieved new solutions for identifying objects or people in many contexts and not just the consumer goods trade which is the application nowadays most known for using this technology. These projects were developed by members of the Universidad Nacional de Colombia’s High Frequency Electronics and Telecommunications Research Group (CMUN (website: www.cmun.unal.edu.co.

  13. A new algorithm for generating highly accurate benchmark solutions to transport test problems

    International Nuclear Information System (INIS)

    We present a new algorithm for solving the neutron transport equation in its discrete-variable form. The new algorithm is based on computing the full matrix relating the scalar flux spatial moments in all cells to the fixed neutron source spatial moments, foregoing the need to compute the angular flux spatial moments, and thereby eliminating the need for sweeping the spatial mesh in each discrete-angular direction. The matrix equation is solved exactly in test cases, producing a solution vector that is free from iteration convergence error, and subject only to truncation and roundoff errors. Our algorithm is designed to provide method developers with a quick and simple solution scheme to test their new methods on difficult test problems without the need to develop sophisticated solution, e.g. acceleration, algorithms before establishing the worthiness of their innovation. We demonstrate the utility of the new algorithm by applying it to the Arbitrarily High Order Transport Nodal (AHOT-N) method, and using it to solve Burre's Test Problem, a suite of benchmark problems that covers a large region in parameter space. Our results provide highly accurate benchmark solutions, that can be distributed electronically and used to verify the pointwise accuracy of other solution methods and algorithms

  14. Benchmarking Heavy Ion Transport Codes FLUKA, HETC-HEDS MARS15, MCNPX, and PHITS

    Energy Technology Data Exchange (ETDEWEB)

    Ronningen, Reginald Martin [Michigan State University; Remec, Igor [Oak Ridge National Laboratory; Heilbronn, Lawrence H. [University of Tennessee-Knoxville

    2013-06-07

    Powerful accelerators such as spallation neutron sources, muon-collider/neutrino facilities, and rare isotope beam facilities must be designed with the consideration that they handle the beam power reliably and safely, and they must be optimized to yield maximum performance relative to their design requirements. The simulation codes used for design purposes must produce reliable results. If not, component and facility designs can become costly, have limited lifetime and usefulness, and could even be unsafe. The objective of this proposal is to assess the performance of the currently available codes PHITS, FLUKA, MARS15, MCNPX, and HETC-HEDS that could be used for design simulations involving heavy ion transport. We plan to access their performance by performing simulations and comparing results against experimental data of benchmark quality. Quantitative knowledge of the biases and the uncertainties of the simulations is essential as this potentially impacts the safe, reliable and cost effective design of any future radioactive ion beam facility. Further benchmarking of heavy-ion transport codes was one of the actions recommended in the Report of the 2003 RIA R&D Workshop".

  15. A computer code package for Monte Carlo photon-electron transport simulation Comparisons with experimental benchmarks

    International Nuclear Information System (INIS)

    A computer code package (PTSIM) for particle transport Monte Carlo simulation was developed using object oriented techniques of design and programming. A flexible system for simulation of coupled photon, electron transport, facilitating development of efficient simulation applications, was obtained. For photons: Compton and photo-electric effects, pair production and Rayleigh interactions are simulated, while for electrons, a class II condensed history scheme was considered, in which catastrophic interactions (Moeller electron-electron interaction, bremsstrahlung, etc.) are treated in detail and all other interactions with reduced individual effect on electron history are grouped together using continuous slowing down approximation and energy straggling theories. Electron angular straggling is simulated using Moliere theory or a mixed model in which scatters at large angles are treated as distinct events. Comparisons with experimentally benchmarks for electron transmission and bremsstrahlung emissions energy and angular spectra, and for dose calculations are presented

  16. Validation and benchmarking of calculation methods for photon and neutron transport at cask configurations

    International Nuclear Information System (INIS)

    The reliability of calculation tools to evaluate and calculate dose rates appearing behind multi-layered shields is important with regard to the certification of transport and storage casks. Actual benchmark databases like SINBAD do not offer such configurations because they were developed for reactor and accelerator purposes. Due to this, a bench-mark-suite based on own experiments that contain dose rates measured in different distances and levels from a transport and storage cask and on a public benchmark to validate Monte-Carlo-transport-codes has been developed. The analysed and summarised experiments include a 60Co point-source located in a cylindrical cask, a 252Cf line-source shielded by iron and polyethylene (PE) and a bare 252Cf source moderated by PE in a concrete-labyrinth with different inserted shielding materials to quantify neutron streaming effects on measured dose rates. In detail not only MCNPTM (version 5.1.6) but also MAVRIC, included in the SCALE 6.1 package, have been compared for photon and neutron transport. Aiming at low deviations between calculation and measurement requires precise source term specification and exact measurements of the dose rates which have been evaluated carefully including known uncertainties. In MAVRIC different source-descriptions with respect to the group-structure of the nuclear data library are analysed for the calculation of gamma dose rates because the energy lines of 60Co can only be modelled in groups. In total the comparison shows that MCNPTM fits very wall to the measurements within up to two standard deviations and that MAVRIC behaves similarly under the prerequisite that the source-model can be optimized. (author)

  17. Framing Social Inclusion as a Benchmark for Cycling-Inclusive Transport Policy in Kisumu, Kenya

    Directory of Open Access Journals (Sweden)

    Walter Alando

    2016-06-01

    Full Text Available Cycling in many cities of the Global South faces unending exclusion from street spaces despite the on-going transport policy reforms. This exclusion worsens the marginalisation of the poor majority who use this mode. In this paper, we formulate social inclusion as a policy tool for reconciling transport policy to the cycling needs of Kisumu, Kenya. We draw from social quality theory and Lefebvre’s right to the city concept to assemble the ideals of social inclusion. These ideals form the benchmark for a qualitative content analysis of the policy pronouncements contained in the Kenya Vision 2030 and the Integrated National Transport Policy to ascertain the opportunities presented by these policies for cycling inclusion. Findings from interviews held with transport professionals in government and private practice support this content analysis. Results show that while the Kenya Vision 2030 focuses on economic growth, the Government has prioritised the implementation of its projects, thus diminishing the fragile opportunity for cycling inclusion presented by the transport policy. To consolidate this opportunity, we propose different policy recommendations to improve the terms for cyclists to claim and produce street spaces.

  18. Intelligent Transportation Systems: Automated Guided Vehicle Systems in Changing Logistics Environments

    Science.gov (United States)

    Schulze, L.; Behling, S.; Buhrs, S.

    2008-06-01

    The usage of Automated Guided Vehicle Systems (AGVS) is growing. This has not always been the case in the past. A new record of the sells numbers is the result of inventive developments, new applications and modern thinking. One market that AGVS were not able to thoroughly conquer yet were rapidly changing logistics environments. The advantages in recurrent transportation with AGVS used to be hindered by the needs of flexibility. When nowadays managers talk about Flexible Manufacturing Systems (FMS) there is no reason not to consider AGVS. Fixed guidelines, permanent transfer stations and static routes are no necessity for most AGVS producers. Flexible Manufacturing Systems can raise profitability with AGVS. When robots start saving billions in production costs, the next step at same plants are automated materials handling systems. Today, there are hundreds of instances of computer-controlled systems designed to handle and transport materials, many of which have replaced conventional human-driven platform trucks. Reduced costs due to damages and failures, tracking and tracing as well as improved production scheduling on top of fewer personnel needs are only some of the advantages.

  19. Benchmark solution for the Spencer-Lewis equation of electron transport theory

    International Nuclear Information System (INIS)

    As integrated circuits become smaller, the shielding of these sensitive components against penetrating electrons becomes extremely critical. Monte Carlo methods have traditionally been the method of choice in shielding evaluations primarily because they can incorporate a wide variety of relevant physical processes. Recently, however, as a result of a more accurate numerical representation of the highly forward peaked scattering process, S/sub n/ methods for one-dimensional problems have been shown to be at least as cost-effective in comparison with Monte Carlo methods. With the development of these deterministic methods for electron transport, a need has arisen to assess the accuracy of proposed numerical algorithms and to ensure their proper coding. It is the purpose of this presentation to develop a benchmark to the Spencer-Lewis equation describing the transport of energetic electrons in solids. The solution will take advantage of the correspondence between the Spencer-Lewis equation and the transport equation describing one-group time-dependent neutron transport

  20. Electric transport in the Netherlands in an international perspective. Benchmark electric driving 2012

    International Nuclear Information System (INIS)

    This international benchmark on electric mobility has been conducted to compare the Dutch governmental efforts and developments in the field of electric road transport. The countries that have been considered in this benchmark are: Austria, Belgium, Denmark, France, Germany, the Netherlands, Norway, Portugal, Spain, UK, China, USA and South Korea. The Netherlands has a high ambition level with regard to the number of electric vehicles compared to other countries without a large car industry. As for the envisaged number of charging points, the Netherlands is one of the prominent leaders. In the field of R and D, Germany, South Korea and China take the lead, followed by France, the UK, the USA and Austria. However, the benchmark has only looked at specific funds for electric mobility, and has not looked at general R and D and innovation funds. The Netherlands has several electro-mobility field tests, but is not leading in number. However, regarding general market penetration, the Netherlands is one of the leading countries, next to Norway, based on the relative number of passenger cars and commercial vehicles on the road. Norway and Austria are leading countries when it comes to implementation of public charging infrastructure, but also in this field the Netherlands has a prominent position in the group of countries that follow. In the current pre-commercial phase, the introduction of electric transportation in the Netherlands is supported by a high-level advisory group, the so-called Formula E-Team. This group consists of representatives and experts from industry and (scientific) society, and acts as a figurehead for electric transport. The group advises on coordination of actions to stimulate not only electro- mobility, but also innovation which should lead to new economic activities. Currently, about two hundred companies are already active in the field of electro-mobility in the Netherlands, including some top players and many SMEs (Small Medium Enterprises). The

  1. Two-dimensional heterogeneous transport theory hot zero-power benchmarks for the WWER-1000 reactors

    International Nuclear Information System (INIS)

    The Mariko code, based on the method of characteristics, has been used to calculate several two-dimensional full core heterogeneous 23-group transport theory solutions for hot zero power states of the WWER-1000 reactor. The initial loading for the three-year fuel cycle is considered. Helios-1.5 has been used to prepare 23-group cross-section data. The benchmarks differ by the positions (up or down) of the control rods groups. The asymptotic assembly-averaged and cell-averaged two-group diffusion parameters for all assembly types, the group-to-group albedo son the radial reflector boundary, and the effective diffusion parameters, including reference discontinuity factors, for the radial reflector nodes are all calculated by Mariko. The accuracy of the SPPS-1.6 and DYN3D nodal diffusion codes and the HEX2DA pin-by-pin diffusion code have been tested. The benchmark with all control rods down poses a great problem for the modal diffusion codes, the maximum error in the relative assembly-wise power distribution reaching 18% for SPPS-1.6. The pin-by-pin code performs well in all cases (Authors)

  2. The VENUS-7 benchmarks. Results from state-of-the-art transport codes and nuclear data

    International Nuclear Information System (INIS)

    For the validation of both nuclear data and computational methods, comparisons with experimental data are necessary. Most advantageous are assemblies where not only the multiplication factors or critical parameters were measured, but also additional quantities like reactivity differences or pin-wise fission rate distributions have been assessed. Currently there is a comprehensive activity to evaluate such measure-ments and incorporate them in the International Handbook of Evaluated Reactor Physics Benchmark Experiments. A large number of such experiments was performed at the VENUS zero power reactor at SCK/CEN in Belgium in the sixties and seventies. The VENUS-7 series was specified as an international benchmark within the OECD/NEA Working Party on Scientific Issues of Reactor Systems (WPRS), and results obtained with various codes and nuclear data evaluations were summarized. In the present paper, results of high-accuracy transport codes with full spatial resolution with up-to-date nuclear data libraries from the JEFF and ENDF/B evaluations are presented. The comparisons of the results, both code-to-code and with the measured data are augmented by uncertainty and sensitivity analyses with respect to nuclear data uncertainties. For the multiplication factors, these are performed with the TSUNAMI-3D code from the SCALE system. In addition, uncertainties in the reactivity differences are analyzed with the TSAR code which is available from the current SCALE-6 version. (orig.)

  3. Intermodal transport of granite from Southern Vietnam to Northern Europe : case: Sai Gon Cuu Long Logistics and Trading Company

    OpenAIRE

    Mai Lien Nguyen, Thi

    2011-01-01

    The national cargoes of Vietnam have increased dramatically over the last few years. To meet the demand of freight transport, strategic attention has been paid to the development of intermodal transport and door- to- door services. Yet the current investments in this area are not up to their potential. On the other hand, very few local businesses are capable of providing a complete shuttle service. This thesis is based on the real case of Sai Gon Cuu Long Logistics and Trading Company. T...

  4. Outsourcing Reverse Logistics

    OpenAIRE

    Logožar, Klavdij

    2008-01-01

    The external supply of logistics services is part of a trend toward outsourcing non-core logistics activities. The scope of third-party logistics may range from a relatively limited combination of activities (e.g. transportation, packaging and warehousing) to a comprehensive set of logistics services. The author first discusses the characteristics of business logistics in the manufacturing firms, which could be helpful in understanding of outsourcing logistics services. The author points out ...

  5. Shipping lines and logistics

    OpenAIRE

    FREMONT, A

    2009-01-01

    For some time it has been acknowledged that logistics is a driving force that shapes the integration of the transport chain. This paper argues that while the liner shipping industry exhibits increased horizontal integration, its vertical integration remains limited. A clear distinction is drawn between freight logistics, container logistics and vessel logistics. Freight logistics is defined as part of the supply chain process, the focus of which are the goods being transported. The purpose of...

  6. Modified PSO Algorithm to the Logistical Network for Goods Transportation Based on Internet of Things

    OpenAIRE

    Du HuaMei Zhang Genglu; Huang Yongsheng

    2013-01-01

    By the technologies of the Internet of Things, the static and dynamic information of the logistical network can be integrated into an information system which can be used to the cost optimization of the logistical services. In this study a modified PSO algorithm is proposed with proper description for the relationship among the key elements in the logistical network. In the proposed algorithm, the similarity of the solution space vector is applied to the overlap generation. Simulative e...

  7. Benchmark calculations of neutron dose rates at transport and storage casks

    International Nuclear Information System (INIS)

    The application of numerical calculations methods for demonstration of sufficient radiation shielding of radioactive waste transport and storage casks requires a validation based on appropriate measurements of gamma and neutron sources. The results of the comparison of measured data and calculations using the Monte Carlo program MCNP show deviations dependent on the loading of the cask within the standard deviation which is dominated by the measuring method. Considering the neutrons scattered at the salt MCNP (in case of disposal in the salt) tends to underestimate the nominal values, but still within the double standard deviation. This accuracy is not reached with MAVRIC. Based on AHE (active handling experiments) data benchmark calculations were performed that can be used as reference value. The total accuracy results from the accuracy of the source term and the measurement of the neutron dose rate with a deviation of 15%.

  8. Electric Vehicles in Logistics and Transportation: A Survey on Emerging Environmental, Strategic, and Operational Challenges

    Directory of Open Access Journals (Sweden)

    Angel Alejandro Juan

    2016-01-01

    Full Text Available Current logistics and transportation (L&T systems include heterogeneous fleets consisting of common internal combustion engine vehicles as well as other types of vehicles using “green” technologies, e.g., plug-in hybrid electric vehicles and electric vehicles (EVs. However, the incorporation of EVs in L&T activities also raise some additional challenges from the strategic, planning, and operational perspectives. For instance, smart cities are required to provide recharge stations for electric-based vehicles, meaning that investment decisions need to be made about the number, location, and capacity of these stations. Similarly, the limited driving-range capabilities of EVs, which are restricted by the amount of electricity stored in their batteries, impose non-trivial additional constraints when designing efficient distribution routes. Accordingly, this paper identifies and reviews several open research challenges related to the introduction of EVs in L&T activities, including: (a environmental-related issues; and (b strategic, planning and operational issues associated with “standard” EVs and with hydrogen-based EVs. The paper also analyzes how the introduction of EVs in L&T systems generates new variants of the well-known Vehicle Routing Problem, one of the most studied optimization problems in the L&T field, and proposes the use of metaheuristics and simheuristics as the most efficient way to deal with these complex optimization problems.

  9. Benchmark experiment for the verification of radiation transport calculations for the radiotherapy dosimetry; Benchmark-Experiment zur Verifikation von Strahlungstransportrechnungen fuer die Dosimetrie in der Strahlentherapie

    Energy Technology Data Exchange (ETDEWEB)

    Renner, Franziska

    2014-10-02

    Monte Carlo simulations are regarded as the most accurate method of solving complex problems of radiation transport. Therefore, they have great potential to realize more exact dose calculations for treatment planning in radiation therapy. However, there is a lack of information on how correct the results of Monte Carlo calculations are on an absolute basis. A practical verification of the calculations can be performed by direct comparison with a benchmark experiment. Thereby, the uncertainties of the experimental result and of the simulation also have to be considered to make a meaningful comparison between the experiment and the simulation possible. This dissertation presents a benchmark experiment and its results, including the uncertainty, which can be used to test the accuracy of Monte Carlo calculations in the field of radiation therapy. The experiment was planned to have parallels to clinical radiation therapy, among other things, with respect to the radiation applied, the materials used and the manner of dose detection. The benchmark experiment aimed at an absolute comparison with a simulation result and because of this it was necessary to use a special research accelerator as a radiation source in the experiment. The accurate characterization of the accelerator beam was a precondition to define a realistic radiation source for the Monte Carlo simulation. Therefore, this work also deals with the characterization of the source and investigations regarding the X-ray target used. Additionally, the dissertation contains the verification of the widely used Monte Carlo program EGSnrc by the benchmark experiment. The simulation of the experiment by EGSnrc, the results and the estimation of the uncertainty related to the simulation are documented in this work.The results and findings of this dissertation end in a comparison between the results of the benchmark experiment and the corresponding calculations with EGSnrc. The benchmark experiment and the simulations

  10. Benchmark test of drift-kinetic and gyrokinetic codes through neoclassical transport simulations

    International Nuclear Information System (INIS)

    Two simulation codes that solve the drift-kinetic or gyrokinetic equation in toroidal plasmas are benchmarked by comparing the simulation results of neoclassical transport. The two codes are the drift-kinetic δf Monte Carlo code (FORTEC-3D) and the gyrokinetic full- f Vlasov code (GT5D), both of which solve radially-global, five-dimensional kinetic equation with including the linear Fokker-Planck collision operator. In a tokamak configuration, neoclassical radial heat flux and the force balance relation, which relates the parallel mean flow with radial electric field and temperature gradient, are compared between these two codes, and their results are also compared with the local neoclassical transport theory. It is found that the simulation results of the two codes coincide very well in a wide rage of plasma collisionality parameter ν* = 0.01 - 10 and also agree with the theoretical estimations. The time evolution of radial electric field and particle flux, and the radial profile of the geodesic acoustic mode frequency also coincide very well. These facts guarantee the capability of GT5D to simulate plasma turbulence transport with including proper neoclassical effects of collisional diffusion and equilibrium radial electric field. (author)

  11. Development of neutral transport lattice code DENT-2D and benchmark calculation

    International Nuclear Information System (INIS)

    We developed new transport lattice code called DENT-2D (Deterministic Neutral Particle Transport Code in 2-D imensional Space)primarily to generate few- group constants for the reactor physics analysis diffusion codes. This code is designed to be coupled with KAERI reactor analysis nodal code, MASTER [1] ,to complete the design system package. CASMO-3 and HELIOS have been used in generating the few- group constant for MASTER. Currently DENT-2D includes only neutron particle transport calculation in 2-dimensional Cartesian geometry. The characteristics method is adopted for the spatial discretization, which is advantageous for the treatment of the complicated geometry structure and the highly anisotropic scattering. The subgroup method is used for the resonance treatment. B1 approximation has been used to obtain the criticality spectrum considering the leakage effect in the real core situation. The exponential matrix method has been used for the depletion calculation. The results of benchmark calculations show that the prediction capability of DENT-2D is comparable to the other lattice codes such as HELIOS and CASMO-3

  12. DETERMINATION OF EFFICIENCY INDICES PERTAINING TO DEVELOPMENT AND OPERATION OF TRANS-BOUNDARY TRANSPORT AND LOGISTICS SYSTEM

    Directory of Open Access Journals (Sweden)

    Y. A. Kopko

    2014-11-01

    Full Text Available An investigation of the system efficiency requires a special approach in terms of its level, content and interrelations with an external environment. In this regard logistic  systems are rather complicated that consist of a number of service sub-systems and designed at various levels.  Such system complexity requires a development of an efficient mechanism for its design and operation of objects of the trans-boundary transport logistics. The efficiency of the trans-boundary transport and logistic systems (TTLS can be described by a number of cost and physical indicators reflecting both market and traditional approaches. The TTLS have their own peculiar features concerning determination of efficiency that are related with the state regulation set of processes occurring  at border crossings. In order to assess the current operational process it is necessary to apply an index system which pays a special attention to a transport capability due to the TTLS specificity. While planning a custom automotive processing at a border checkpoint there is no need to aspire for an immediate passage of all vehicles by all means. The basic requirement is to maintain a transport capability in the operational zone. Thus an irregularity of incoming vehicles at border crossing points is smoothed out by regulating priorities pertaining to requirements of custom processing while using an urgency function of cargo transportation thereby ensuring an optimal operation of a customs post.

  13. The new deterministic 3-D radiation transport code Multitrans: C5G7 MOX fuel assembly benchmark

    International Nuclear Information System (INIS)

    The novel deterministic three-dimensional radiation transport code MultiTrans is based on combination of the advanced tree multigrid technique and the simplified P3 (SP3) radiation transport approximation. In the tree multigrid technique, an automatic mesh refinement is performed on material surfaces. The tree multigrid is generated directly from stereo-lithography (STL) files exported by computer-aided design (CAD) systems, thus allowing an easy interface for construction and upgrading of the geometry. The deterministic MultiTrans code allows fast solution of complicated three-dimensional transport problems in detail, offering a new tool for nuclear applications in reactor physics. In order to determine the feasibility of a new code, computational benchmarks need to be carried out. In this work, MultiTrans code is tested for a seven-group three-dimensional MOX fuel assembly transport benchmark without spatial homogenization (NEA C5G7 MOX). (author)

  14. Recent benchmarking experience of the OECD/Nea expert group on three-dimensional radiation transport

    International Nuclear Information System (INIS)

    Experience of the OECD/NEA Expert Group on three-dimensional radiation transport pertaining to the C5 MOX fuel problem is examined, and the group's activity since the project's initiation in the fall of 1999 is reviewed. Twenty groups from seven nations submitted solutions to the two- and/or three-dimensional forms of the problem. Their solution methods are compared and their results analyzed. Observations are drawn from the benchmarking experience to assess the strengths and weaknesses of current methods and to better understand the challenges encountered by those who seek to obtain accurate solutions to large-scale multidimensional neutron transport problems. Drawing on the tabulated results, our e-mail correspondence and telephone conversations with participants, and on our own parametric studies, we are able to share some insights concerning space-angle transport approximations. For light water reactor physics problems without spatial homogenization like this one, refinement of angular approximations proved to be a greater challenge than refinement of the spatial approximation. Either a stair-step representation of the fuel-coolant interface or a polygonal representation was sufficient to describe the pin cell geometry, but only if great care was take to preserve the fuel volume exactly. The use of a high order angular approximation, such as S32 or P31, was required to obtain an accurate pin power and eigenvalue solution. The dangers of employing just one level of space-angle approximation became apparent to a number of participants during the course of this benchmark exercise. Frequently, eigenvalue errors resulting from coarse angular and spatial approximations have opposing effects on the eigenvalue. Thus, by cancellation of error, an accurate eigenvalue can be obtained using a coarse space-angle approximation while the flux solution is quite inaccurate. As a result, refinement of the spatial or angular approximation in such situations can cause the

  15. C5 Benchmark Problem with Discrete Ordinate Radiation Transport Code DENOVO

    International Nuclear Information System (INIS)

    The C5 benchmark problem proposed by the Organisation for Economic Co-operation and Development/Nuclear Energy Agency was modeled to examine the capabilities of Denovo, a three-dimensional (3-D) parallel discrete ordinates (SN) radiation transport code, for problems with no spatial homogenization. Denovo uses state-of-the-art numerical methods to obtain accurate solutions to the Boltzmann transport equation. Problems were run in parallel on Jaguar, a high-performance supercomputer located at Oak Ridge National Laboratory. Both the two-dimensional (2-D) and 3-D configurations were analyzed, and the results were compared with the reference MCNP Monte Carlo calculations. For an additional comparison, SCALE/KENO-V.a Monte Carlo solutions were also included. In addition, a sensitivity analysis was performed for the optimal angular quadrature and mesh resolution for both the 2-D and 3-D infinite lattices of UO2 fuel pin cells. Denovo was verified with the C5 problem. The effective multiplication factors, pin powers, and assembly powers were found to be in good agreement with the reference MCNP and SCALE/KENO-V.a Monte Carlo calculations.

  16. Tertiary Logistics in the Focus of All Logistics

    OpenAIRE

    Ratko Zelenika; Mirjana Grèiæ; Helga Pavliæ Skender

    2008-01-01

    Trade logistics, traffic logistics, transport logistics and warehouse logistics are just some of the tertiary logistics which enables production processes of all economic sector products and services. Tertiary logistics representing the tertiary economic sector is the most sofisticated and the most important logistics due to the characteristics of the tertiary sector as a service sector that promotes business conditions in all economic sectors. Accordingly, tertiary logistics has a crucial ro...

  17. Transport logistics for the transport of radioactive waste form public authorities to the final repository Konrad. Presentation of a simulation model

    International Nuclear Information System (INIS)

    The final repository Konrad will start operation in 2019. The licensed disposal amount of 303.000 m3 is planned with 10.000 m3 per year. The waste delivery can be performed by road or rail transport. The infrastructure boundary conditions have to be considered with the transport planning. The transport logistics concept is presented using the examples of the interim storage facilities Lubmin and Karlsruhe. The planned disposal regime for low- and intermediate-level wastes requires a comprehensive logistics concept that provides a delivery according to the schedule. The experience values from transport simulation experiments will be considered in the frame of the planning software EPALKO development as control function and optimization parameters.

  18. NEACRP intercomparison of codes for the shielding assessment of transport packages. Solution for the TN12 benchmark problem

    Energy Technology Data Exchange (ETDEWEB)

    Locke, H.F.

    1991-06-01

    The Reactor Physics Committee of the Nuclear Energy Agency has set up a series of benchmark calculations to compare the performance of the various codes used in shielding calculations for fuel transport flasks. For one benchmark the calculations are to be compared with dose-rates measured outside a French TN12 flask loaded with 12 irradiated fuel elements from a PWR. This report describes the calculations carried out for this flask using the FISPIN and MCBEND codes, and compares the results with the measured values. (author).

  19. Transport and logistics as network competencies in a localized industrial cluster

    DEFF Research Database (Denmark)

    Hansen, Leif Gjesing

    2004-01-01

    This chapter argues that transport is more than infrastructure and transport capacity for the processes governing industrial organisation.......This chapter argues that transport is more than infrastructure and transport capacity for the processes governing industrial organisation....

  20. Posibilities Of Appliing Integrated Marketing Logistic In The Harbour-Transportation Services

    OpenAIRE

    Mimo Draskovic

    2007-01-01

    Logistics as a relatively new science with its methodology of optimization and organization of rational movement of tangible (cargo) and accompanying flows, such as informational, financial and service, enables the increase in efficiency of these flows, decrease of expenses, greater number of satisfied clients and creation of added value as the basis of competitive advantage. Due to the mentioned characteristics, the integrated marketing logistics has great possibilities of being applied in r...

  1. The Impact of 3PL’s Green Initiatives on the Purchasing of Transport and Logistics Services: an Exploratory Study

    OpenAIRE

    Evangelista, Pietro; Huge-Brodin, Maria; Isaksson, Karin; Sweeney, Edward

    2011-01-01

    There is a lack of research investigating the interaction and reciprocal influences between the buyer perspective and the supplier of transport and logistics services. Studies on the buyer perspective analyse the selection criteria to buy 3PL services, while research focused on green 3PL services examine initiatives undertaken by these companies to provide more environmentally sustainable services. The objective of this paper is to fill this void through an explorative case study analysis on ...

  2. An alternative method to predict the S-shaped curve for logistic characteristics of phonon transport in silicon thin film

    Science.gov (United States)

    Awad, M. M.

    2014-05-01

    The S-shaped curve was observed by Yilbas and Bin Mansoor (2013). In this study, an alternative method to predict the S-shaped curve for logistic characteristics of phonon transport in silicon thin film is presented by using an analytical prediction method. This analytical prediction method was introduced by Bejan and Lorente in 2011 and 2012. The Bejan and Lorente method is based on two-mechanism flow of fast "invasion" by convection and slow "consolidation" by diffusion.

  3. The operational and logistic experience on transportation of Brazilian spent nuclear fuel to the United States of America

    International Nuclear Information System (INIS)

    In 1999 a shipment of 127 spent MTR fuel assemblies was made from IEA-R1 Research Reactor located at the Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), Sao Paulo, Brazil to Savannah River Site Laboratory (SRS) in the United States. This paper describes the operational and logistic experience on this transportation made by IPEN staff, EDLOW International Company and the Consortium NCS/GNS. (author)

  4. Intermodal container transport logistics to andfrom Malaysian ports : Evaluation of Customer requirements and environmental eff‡ects

    OpenAIRE

    Nasir, Sharin

    2014-01-01

    Malaysian ports’ container volumes are expected to increase to 36.6 million TEUs in 2020 compare to 12 million TEUs in 2005. Almost 45% of the container volumes are local containers entering the Malaysian hinterland. The hinterland container transport movements are dominated by road haulage (90%), alongside road-rail intermodal that currently handles the remaining 10%. The aim of this research is to develop possible strategies for improving the logistics of the intermodal hinterland container...

  5. Land-Based Wind Turbine Transportation and Logistics Barriers and Their Effects on U.S. Wind Markets (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Cotrell, J.; Stehly, T.; Johnson, J.; Roberts, J.O.; Parker, Z.; Scott, G.; Heimiller, D.

    2014-05-01

    The average size of land based wind turbines installed in the United States has increased dramatically over time. As a result wind turbines are facing new transportation and logistics barriers that limit the size of utility scale land based wind turbines that can be deployed in the United States. Addressing these transportation and logistics barriers will allow for even further increases in U.S. turbine size using technologies under development for offshore markets. These barriers are important because larger taller turbines have been identified as a path to reducing the levelized cost of energy for electricity. Additionally, increases in turbine size enable the development of new low and moderate speed markets in the U.S. In turn, wind industry stakeholder support, market stability, and ultimately domestic content and manufacturing competitiveness are potentially affected. In general there is very little recent literature that characterizes transportation and logistics barriers and their effects on U.S. wind markets and opportunities. Accordingly, the objective of this paper is to report the results of a recent NREL study that identifies the barriers, assesses their impact and provides recommendations for strategies and specific actions.

  6. Electric transport in the Netherlands in an international perspective. Benchmark electric driving 2012; Elektrisch vervoer in Nederland in internationaal perspectief. Benchmark elektrisch rijden 2012

    Energy Technology Data Exchange (ETDEWEB)

    Kroon, P.; Weeda, M. [ECN Beleidsstudies, Petten (Netherlands); Appels, D. [Agentschap NL, Utrecht (Netherlands)

    2012-07-15

    This international benchmark on electric mobility has been conducted to compare the Dutch governmental efforts and developments in the field of electric road transport. The countries that have been considered in this benchmark are: Austria, Belgium, Denmark, France, Germany, the Netherlands, Norway, Portugal, Spain, UK, China, USA and South Korea. The Netherlands has a high ambition level with regard to the number of electric vehicles compared to other countries without a large car industry. As for the envisaged number of charging points, the Netherlands is one of the prominent leaders. In the field of R and D, Germany, South Korea and China take the lead, followed by France, the UK, the USA and Austria. However, the benchmark has only looked at specific funds for electric mobility, and has not looked at general R and D and innovation funds. The Netherlands has several electro-mobility field tests, but is not leading in number. However, regarding general market penetration, the Netherlands is one of the leading countries, next to Norway, based on the relative number of passenger cars and commercial vehicles on the road. Norway and Austria are leading countries when it comes to implementation of public charging infrastructure, but also in this field the Netherlands has a prominent position in the group of countries that follow. In the current pre-commercial phase, the introduction of electric transportation in the Netherlands is supported by a high-level advisory group, the so-called Formula E-Team. This group consists of representatives and experts from industry and (scientific) society, and acts as a figurehead for electric transport. The group advises on coordination of actions to stimulate not only electro- mobility, but also innovation which should lead to new economic activities. Currently, about two hundred companies are already active in the field of electro-mobility in the Netherlands, including some top players and many SMEs (Small Medium Enterprises). The

  7. Benchmark of the 3-dimensional plasma transport codes E3D and BoRiS

    International Nuclear Information System (INIS)

    The next generation of experiments - both for tokamaks and stellarators - require the development of appropriate theoretical models. One important aspect here is the plasma edge physics description. Fluid transport codes extending beyond the standard 2-D code packages like B2-Eirene or UEDGE are under development. In the case of tokamaks, an interesting alternative line is the concept of an ergodic edge (necessary e.g. for ergodic divertors in TORE SUPRA or TEXTOR-94) creating a 3-D edge structure. To study this effects, a 3-D code E3D based upon Multiple Coordinate Systems Approach is being developed. Presently, we extend the program towards stellarator applications. A few new options are made available: single-island geometry and new formulation of boundary conditions. For the new stellarator W7-X a 3-D finite volume code BoRiS is developed using magnetic (Boozer) coordinates. In this paper, we present a benchmark of both codes for a test geometry (single magnetic island in W7-X) accounting for full 3-D metric variations for strongly anisotropic electron heat conduction equation. (orig.)

  8. Application of a heterogeneous coarse mesh transport method to a MOX benchmark problem

    International Nuclear Information System (INIS)

    Recently, a coarse mesh transport method was extended to 2-D geometry by coupling Monte Carlo response function calculations to deterministic sweeps for converging the partial currents on the coarse mesh boundaries. More extensive testing of the new method has been performed with the previously published continuous energy benchmark problem, as well as the multigroup C5G7 MOX problem. The effect of the partial current representation in space, for the MOX problem, and in space and energy, for the smaller problem, on the accuracy of the results is the focus of this paper. For the MOX problem, accurate results were obtained with the assumption that the partial currents are piecewise-constant on four spatial segments per coarse mesh interface. Specifically, the errors in the system multiplication factor and the average absolute pin power were 0.12% and 0.68%, respectively. The root mean square and the mean relative pin power errors were 1.15% and 0.56%, respectively. (authors)

  9. STUDY OF VARIOUS INDICES OF LOSSES IN HANDLING AND TRANSPORT OF GREENS, VEGETABLES AND FRUITS RELATED TO LOGISTICS MANAGEMENT

    Directory of Open Access Journals (Sweden)

    JOÃO ODENI LOURENÇO

    2010-10-01

    Full Text Available The aim of this study was to examine several indices of losses in handling and transportation of greens, vegetables and fruits elated to logistics management. It also proposed to quantitatively demonstrate the waste of food that occurs in Brazil. In this study we used the deductive method, which is characterized as a part of a general situation and for a particular generic information and the conclusion is already implied or explicitly contained in the premise and the natural environment as a direct source of data and exploratory . The study concluded that large losses occur in greens, vegetables and fruits in various stages of production, mainly in transport, logistics and maintenance of refrigeration are the key points for the perishable product reaches the consumer showing the required quality the same for this, it is the manager responsible for logistics operations using operating techniques and recommended based on new technologies, aiming to optimize its costs, and there is a need for an awareness of all involved for the losses and wastage are reduced throughout the supply chain.

  10. Validation of neutron-transport calculations in benchmark facilities for improved damage-fluence predictions

    International Nuclear Information System (INIS)

    An accurate determination of damage fluence accumulated by reactor pressure vessels (RPV) as a function of time is essential in order to evaluate the vessel integrity for both pressurized thermal shock (PTS) transients and end-of-life considerations. The desired accuracy for neutron exposure parameters such as displacements per atom or fluence (E > 1 MeV) is of the order of 20 to 30%. However, these types of accuracies can only be obtained realistically by validation of nuclear data and calculational methods in benchmark facilities. The purposes of this paper are to review the needs and requirements for benchmark experiments, to discuss the status of current benchmark experiments, to summarize results and conclusions obtained so far, and to suggest areas where further benchmarking is needed

  11. Analysis of logistic costs of regional air transportation [paper in Portuguese

    Directory of Open Access Journals (Sweden)

    Marcelo de Carvalho Griebeler

    2009-07-01

    Full Text Available This paper employs an econometric approach and estimates an airline cost function with the aim to investigate whether Brazilian regional airlines operating in different regions have distinct sensibility concerning fuel expenses due to their distinct closeness to QAv distribution centers. Hence, it is tested if supply logistics in acquiring QAv determines cost structure of the airlines and therefore their competitiveness. Obtained results seem to corroborate this hypothesis.

  12. Underground logistics

    CERN Document Server

    Foraz, K; CERN. Geneva. TS Department

    2005-01-01

    More than 80’000 tons of materials have to be transported and installed down into the LHC tunnel. The magnet assemblies which represent about 50’000 tons, will be transported according to the master schedule between March 2005 and November 2006. Considering that these about 1’800 cryo-magnets will be transported at a maximum speed of 3 km/h in a narrow tube (where installation works and hardware commissioning activities are ongoing) this duration of 21 months is a real challenge. This paper aims at describing: - the information flows between the different people involved in the logistics attached to the cryo-magnets, - the organization chosen within the Installation Coordination group, - the problems encountered so far and the solutions adopted. The coordination process with other underground transport and activities, mainly for the QRL will also be presented.

  13. An alternative method to predict the S-shaped curve for logistic characteristics of phonon transport in silicon thin film

    International Nuclear Information System (INIS)

    The S-shaped curve was observed by Yilbas and Bin Mansoor (2013). In this study, an alternative method to predict the S-shaped curve for logistic characteristics of phonon transport in silicon thin film is presented by using an analytical prediction method. This analytical prediction method was introduced by Bejan and Lorente in 2011 and 2012. The Bejan and Lorente method is based on two-mechanism flow of fast “invasion” by convection and slow “consolidation” by diffusion.

  14. Behavioral Logistics - Analysis of behavioral routines and governance structures in the interorganizational maritime transport chain

    Directory of Open Access Journals (Sweden)

    2010-09-01

    Full Text Available The strong improvements in information and communication systems as well as better transshipment technologies provide the platform for more efficient transport within interorganizational transport chains. Nevertheless these technologies do not automatically optimize systems based on routines and behavioral patterns, established over the last decades. Logisticians - in theory and practice - have to consider the field of behavioral science to describe and analyse transport problems regarding to involved actors' strategic behavior and social embeddedness, too. The objective of this paper is to illustrate behavioral aspects of supposed technical problems in interorganizational transport chains. Therefore, this paper analyses behavioral routines and governance structures in the interorganizational maritime transport chain using a case study, dealing with the generation and circulation of transport information at the earliest point available, so called "estimated time of arrival" (ETA.

  15. Analysis of the transportation logistics for spent nuclear fuel in Korea

    International Nuclear Information System (INIS)

    As a part of the back-end fuel cycle, transportation of spent nuclear fuel (SNF) from nuclear power plants (NPPs) to a fuel storage facility is very important in establishing a nuclear fuel cycle. In Korea, the accumulated amount of SNF in the NPP pools is troublesome since the temporary storage facilities at these NPP pools are expected to be full of SNF within ten years. Therefore, Korea cannot help but plan for the construction of an interim storage facility to solve this problem in the near future. Especially, a decision on several factors, such as where the interim storage facility should be located, how many casks a transport ship can carry at a time and how many casks are initially required, affect the configuration of the transportation system. In order to analyze the various possible candidate scenarios, we assumed four cases for the interim storage facility location, three cases for the load capacity that a transport ship can carry and two cases for the total amount of casks used for transportation. First, this study considered the currently accumulated amount of SNF in Korea, and the amount of SNF generated from NPPs until all NPPs are shut down. Then, how much SNF per year must be transported from theNPPs to an interim storage facility was calculated during an assumed transportation period. Second, 24 candidate transportation scenarios were constructed by a combination of the decision factors. To construct viable yearly transportation schedules for the selected 24 scenarios, we created a spreadsheet program named TranScenario, which was developed by using MS EXCEL. TranScenario can help schedulers input shipping routes and allocate transportation casks. Also,TranScenario provides information on the cask distribution in the NPPs and in the interim storage facility automatically, by displaying it in real time according to the shipping routes, cask types and cask numbers that the user generates. Once a yearly transportation schedule is established, Tran

  16. Logistical concepts associated with international shipments using the USA/9904/B(U)F RTG Transportation System (RTGTS)

    International Nuclear Information System (INIS)

    Over the last 30 years, radioisotopes have provided heat from which electrical power is generated. For space missions, the isotope of choice has generally been 238PuO2, its long half-life making it ideal for supplying power to remote satellites and spacecraft like the Voyager, Pioneer, and Viking missions, as well as the recently launched Galileo and Ulysses missions, and the presently planned Cassini mission. Electric power for future space missions will be provided by either radioisotopic thermoelectric generators (RTG), radioisotope thermophotovoltaic systems (RTPV), alkali metal thermal to electrical conversion (AMTEC) systems, radioisotope Stirling systems, or a combination of these. The type of electrical power system has yet to be specified for the 'Pluto Express' mission. However, the current plan does incorporate the use of Russian launch platforms for the spacecraft. The implied tasks associated with this plan require obtaining international certification for the transport of the radioisotopic power system, and resolving any logistical issues associated with the actual shipment of the selected radioisotopic power system. This paper presents a conceptual summary of the logistical considerations associated with shipping the selected radioisotopic power system using the USA/9904/B(U)F-85, Radioisotope Thermoelectric Generator Transportation System (RTGTS)

  17. Packaging, Transportation, and Disposal Logistics for Large Radioactively Contaminated Reactor Decommissioning Components

    International Nuclear Information System (INIS)

    The packaging, transportation and disposal of large, retired reactor components from operating or decommissioning nuclear plants pose unique challenges from a technical as well as regulatory compliance standpoint. In addition to the routine considerations associated with any radioactive waste disposition activity, such as characterization, ALARA, and manifesting, the technical challenges for large radioactively contaminated components, such as access, segmentation, removal, packaging, rigging, lifting, mode of transportation, conveyance compatibility, and load securing require significant planning and execution. In addition, the current regulatory framework, domestically in Titles 49 and 10 and internationally in TS-R-1, does not lend itself to the transport of these large radioactively contaminated components, such as reactor vessels, steam generators, reactor pressure vessel heads, and pressurizers, without application for a special permit or arrangement. This paper addresses the methods of overcoming the technical and regulatory challenges. The challenges and disposition decisions do differ during decommissioning versus component replacement during an outage at an operating plant. During decommissioning, there is less concern about critical path for restart and more concern about volume reduction and waste minimization. Segmentation on-site is an available option during decommissioning, since labor and equipment will be readily available and decontamination activities are routine. The reactor building removal path is also of less concern and there are more rigging/lifting options available. Radionuclide assessment is necessary for transportation and disposal characterization. Characterization will dictate the packaging methodology, transportation mode, need for intermediate processing, and the disposal location or availability. Characterization will also assist in determining if the large component can be transported in full compliance with the transportation

  18. Logistics aspects of pipeline transport in the supply of petroleum products

    OpenAIRE

    2008-01-01

    The commercial transportation of crude oil and petroleum products by pipeline is receiving increased attention in South Africa. Transnet Pipeline Transport has recently obtained permission from the National Energy Regulator of South Africa (Nersa) to construct and operate a new petroleum products pipeline of 60 cm diameter from Durban to Gauteng. At an operating speed of 10 km/h the proposed 60 cm Transnet pipeline would be able to deliver 3,54 million litres of petroleum product per hour. Th...

  19. MCNP neutron benchmarks

    International Nuclear Information System (INIS)

    Over 50 neutron benchmark calculations have recently been completed as part of an ongoing program to validate the MCNP Monte Carlo radiation transport code. The new and significant aspects of this work are as follows: These calculations are the first attempt at a validation program for MCNP and the first official benchmarking of version 4 of the code. We believe the chosen set of benchmarks is a comprehensive set that may be useful for benchmarking other radiation transport codes and data libraries. These calculations provide insight into how well neutron transport calculations can be expected to model a wide variety of problems

  20. Improving the Value Chain of Biofuel Manufacturing Operations by Enhancing Coproduct Transportation and Logistics

    Science.gov (United States)

    Biofuels, including corn-based ethanol, can partially meet the increasing demand for transportation fuels. The production of ethanol in the U.S. has dramatically increased; so too has the quantity of manufacturing coproducts. These nonfermentable residues (i.e., proteins, fibers, oils) are sold as...

  1. Technologies and logistics for handling, transport and distribution of animal manures

    Science.gov (United States)

    Organizing and managing the whole manure handling chain from the animal house through transport to the point of use (e.g. in the field) is a challenging task requiring consideration of manure type and operating conditions. Solid and liquid manure must be handled differently, using very different tec...

  2. Benchmarking passenger air transport marketing activities in Vietnam : case company: Etihad Airways

    OpenAIRE

    Kim Nga Nguyen, Thi

    2015-01-01

    Marketing strategy is crucial for businesses operating in highly competitive environments. Especially with the intense competition over international flights in the Vietnamese air travel market, it is important for airlines to adopt superior strategy, in order to incorporate brand presence in the market. Hence, performing benchmarking on marketing strategy for Etihad Airways is timely and necessary. The thesis adopts the combination of inductive and deductive approaches, with the assistan...

  3. Physics Data Management Tools for Monte Carlo Transport: Computational Evolutions and Benchmarks

    CERN Document Server

    Han, Mincheol; Seo, Hee; Moneta, Lorenzo; Kim, Chan Hyeong

    2010-01-01

    The development of a package for the management of physics data is described: its design, implementation and computational benchmarks. This package improves the data management tools originally developed for Geant4 physics models based on the EADL, EEDL and EPDL97 data libraries. The implementation exploits recent evolutions of the C++ libraries appearing in the C++0x draft, which are intended for inclusion in the next C++ ISO Standard. The new tools improve the computational performance of physics data management.

  4. The important role of maritime law and regulation of transportation and ports to the development of logistics [paper in Portuguese

    Directory of Open Access Journals (Sweden)

    Wesley O. Collyer

    2013-01-01

    Full Text Available The development of Brazilian economy, especially after the reduction of inflation in the second period of 1990’s, has developed the Brazilian foreign trade (MDIC, 2010. Nevertheless, its logistics are not efficient, and the institutional framework does not contribute to promote the investments and increasing the efficiency in the sector, the way to become Brazilian products more competitive. In this scenario, 95% (Antaq, 2010; MDIC, 2010 of Brazilian foreign trade is carried using waterways and through the ports. This has caused a big chaos specially due to the bottlenecks in the sector. Thus, Maritime Law and Regulatory Law of Transportation and Ports, as autonomous legal disciplines have achieved an important role. In order to contribute to the diffusion of both, this article aims to present some important aspects of these issues, as well the main themes of the book Direito Marítimo, Regulação e Desenvolvimento.

  5. A System Dynamics Approach to Humanitarian Logistics and the Transportation of Relief Supplies

    OpenAIRE

    Yesenia Cruz-Cantillo

    2014-01-01

    A system dynamics model was developed for the forecasting, prioritization, and distribution of critical supplies during relief operations in case of a hurricane event, while integrating GIS information. Data was obtained from operational reports gathered during Hurricane George from agencies such as: Puerto Rico Department of Housing (PRDOH), Puerto Rico National Guard (PRNG), Civil Defense State Agency of Puerto Rico, Puerto Rico Department of Transportation and Public Works (PRDOTPW) and Pu...

  6. Comprehensive Logistics

    CERN Document Server

    Gudehus, Timm

    2012-01-01

    Modern logistics comprises operative logistics, analytical logistics and management of logistic networks. Central task of operative logistics is the efficient supply of required goods at the right place within the right time. Tasks of analytical logistics are designing optimal networks and systems, developing strategies for planning, scheduling and operation, and organizing efficient order and performance processes. Logistic management plans, implements and operates logistic networks and schedules orders, stocks and resources. This reference-book offers a unique survey of modern logistics. It contains proven strategies, rules and tools for the solution of a multitude of logistic problems. The analytically derived algorithms and formulas can be used for the computer-based planning of logistic systems and for the dynamic scheduling of orders and resources in supply networks. They enable significant improvements of performance, quality and costs. Their application is demonstrated by several examples from industr...

  7. Initial Energy Logistics Cost Analysis for Stationary, Quasi-Dynamic, and Dynamic Wireless Charging Public Transportation Systems

    Directory of Open Access Journals (Sweden)

    Young Jae Jang

    2016-06-01

    Full Text Available This paper presents an initial investment cost analysis of public transportation systems operating with wireless charging electric vehicles (EVs. There are three different types of wireless charging systems, namely, stationary wireless charging (SWC, in which charging happens only when the vehicle is parked or idle, quasi-dynamic wireless charging (QWC, in which power is transferred when a vehicle is moving slowly or in stop-and-go mode, and dynamic wireless charging (DWC, in which power can be supplied even when the vehicle is in motion. This analysis compares the initial investment costs for these three types of charging systems for a wireless charging-based public transportation system. In particular, this analysis is focused on the energy logistics cost in transportation, which is defined as the cost of transferring and storing the energy needed to operate the transportation system. Performing this initial investment analysis is complicated, because it involves considerable tradeoffs between the costs of batteries in the EV fleet and different kinds of battery-charging infrastructure. Mathematical optimization models for each type of EV and infrastructure system are used to analyze the initial costs. The optimization methods evaluate the minimum initial investment needed to deploy the public transportation system for each type of EV charging solution. To deal with the variable cost estimates for batteries and infrastructure equipment in the current market, a cost-sensitivity analysis is performed. The goal of this analysis is to identify the market cost conditions that are most favorable for each type of wireless charging solution. Furthermore, the cost analysis quantitatively verifies the qualitative comparison of the three different wireless charging types conducted in the previous research.

  8. Benchmarks of KIPP: Vlasov-Fokker-Planck code for parallel plasma transport in the SOL and divertor

    International Nuclear Information System (INIS)

    Benchmarks of the new 1D2V kinetic code KIPP (KInetic code for Plasma Periphery) for parallel plasma transport in the scrape-off layer (SOL) and divertor of magnetic confinement fusion devices are presented. The code is based on the continuum discretisation scheme for the Vlasov-Fokker-Planck equation. It assumes plasma quasi-neutrality, maintained by the electron parallel momentum balance, and uses a logical sheath boundary condition for the Debye potential drop at material surfaces. The code is parallelized under the MPI environment, with the most time consuming part, Coulomb collisions, being calculated simultaneously for all spatial locations by separate processors using a sparse matrix solver for the full non-linear collision operator in two velocity variables: parallel and gyro-averaged perpendicular velocities. KIPP is being developed with the aim of integrating it into SOLPS (B2-Eirene), to replace fluid treatment of parallel plasma transport with the kinetic one. Benchmark results for parallel electron heat conduction and electron-ion thermoforce for highly collisional plasmas are presented, as well as some results for less collisional plasmas. This paper focuses on the 1d2v features of the code, with the 0d2v features presented earlier in [1, 2]. (copyright 2014 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  9. Mobile information systems for goods transport logistics. How to use vehicle fleets flexibly and economically; Mobile Informationssysteme fuer die Gueterverkehrslogistik. Loesungen fuer den flexiblen und wirtschaftlichen Fuhrparkeinsatz

    Energy Technology Data Exchange (ETDEWEB)

    Lublow, R.; Baumeister, G.H.; Bonn, B. van; Landen, R.; Kolb, R.

    1997-12-31

    The book graphically demonstrates the bandwidth of the subject (cost analysis, follow-up of shipments, planning of tours for commissions at short notice, and planning of maintenance) and points out all aspects relevant to procurement and use. Theoretic elements and practical experience are described in understandable form. The book addresses readers in all sectors of goods transport: forwarding agents, logistics services, transport planners, vehicle fleet managers, EDP personnel in the transport sector, and consultants. (GL)

  10. Application of the INSTANT-HPS PN Transport Code to the C5G7 Benchmark Problem

    International Nuclear Information System (INIS)

    INSTANT is the INL's next generation neutron transport solver to support high-fidelity multi-physics reactor simulation INSTANT is in continuous development to extend its capability Code is designed to take full advantage of middle to large cluster (10-1000 processors) Code is designed to focus on method adaptation while also mesh adaptation will be possible. It utilizes the most modern computing techniques to generate a neutronics tool of full-core transport calculations for reactor analysis and design. It can perform calculations on unstructured 2D/3D triangular, hexagonal and Cartesian geometries. Calculations can be easily extended to more geometries because of the independent mesh framework coded with the model Fortran. This code has a multigroup solver with thermal rebalance and Chebyshev acceleration. It employs second-order PN and Hybrid Finite Element method (PNHFEM) discretization scheme. Three different in-group solvers - preconditioned Conjugate Gradient (CG) method, preconditioned Generalized Minimal Residual Method (GMRES) and Red-Black iteration - have been implemented and parallelized with the spatial domain decomposition in the code. The input is managed with extensible markup language (XML) format. 3D variables including the flux distributions are outputted into VTK files, which can be visualized by tools such as VisIt and ParaView. An extension of the code named INSTANTHPS provides the capability to perform 3D heterogeneous transport calculations within fuel pins. C5G7 is an OECD/NEA benchmark problem created to test the ability of modern deterministic transport methods and codes to treat reactor core problems without spatial homogenization. This benchmark problem had been widely analyzed with various code packages. In this transaction, results of the applying the INSTANT-HPS code to the C5G7 problem are summarized.

  11. Sustainable logistics in practice

    OpenAIRE

    Fitria, Irza

    2011-01-01

    Improved logistical performance is one of the tools to mitigate greenhouse gases emissions from freight transport. The production company and transportation company should find the practice to decrease the emissions from their activity in distributions of goods. In this thesis, the sustainable logistics in practice in focal company (Ekornes) is studied. The potential improvement in relation to sustainable transportation principle is explained. Through qualitative method research, the theory r...

  12. Benchmarking Developing Asia's Manufacturing Sector

    OpenAIRE

    Felipe, Jesus; Gemma ESTRADA

    2007-01-01

    This paper documents the transformation of developing Asia's manufacturing sector during the last three decades and benchmarks its share in GDP with respect to the international regression line by estimating a logistic regression.

  13. Logistic management system for natural gas transportation by pipelines; Sistema de gestao de logistica de transporte de gas por gasodutos

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Sidney Pereira dos; Castro, Antonio Orestes de Salvo [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Leal, Jose Eugenio [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil)

    2008-07-01

    An efficient management of the natural gas business chain, based on pipeline transmission network and taking into consideration the interaction between the main players such as shippers, suppliers, transmission companies and local distribution companies, requires the use of decision-making support systems to maximize resources and mitigate contingencies due to gas supply shortfalls, operational contingencies from scheduled and non-scheduled equipment outages as well as market demand shortfalls. This work presents a practical utilization of technologies such as thermohydraulic simulation of gas flow through pipelines, Monte Carlo simulation for compressor station availability studies and economic risk evaluation related to potential revenue losses and contractual penalties and linear programming for maximization and minimization objective function. The proposed system allows the definition of the optimum availability level to be maintained by the Transporter, by means of installing redundancy, to mitigate losses related to revenue and contractual penalties. Identifies, quantifies and justifies economically the installation of stand-by compressor units, mitigating Transporter exposure to losses due to capacity shortfalls as consequence of scheduled and non-scheduled outages. (author)

  14. Revisiting the TORT Solutions to the NEA Suite of Benchmarks for 3D Transport Methods and Codes Over a Range in Parameter Space

    International Nuclear Information System (INIS)

    Improved TORT solutions to the 3D transport codes suite of benchmarks exercise are presented in this study. Preliminary TORT solutions to this benchmark indicate that the majority of benchmark quantities for most benchmark cases are computed with good accuracy, and that accuracy improves with model refinement. However, TORT fails to compute accurate results for some benchmark cases with aspect ratios drastically different from 1, possibly due to ray effects. In this work, we employ the standard approach of splitting the solution to the transport equation into an uncollided flux and a fully collided flux via the code sequence GRTUNCL3D and TORT to mitigate ray effects. The results of this code sequence presented in this paper show that the accuracy of most benchmark cases improved substantially. Furthermore, the iterative convergence problems reported for the preliminary TORT solutions have been resolved by bringing the computational cells' aspect ratio closer to unity and, more importantly, by using 64-bit arithmetic precision in the calculation sequence. Results of this study are also reported

  15. Analysis of Sneak-7A critical benchmark using 3-D deterministic transport and sensitivity analysis methods

    International Nuclear Information System (INIS)

    Some high-quality reactor physics benchmark experiments are being re-evaluated with today's state-of-the-art methods, particularly using that of detailed 3-dimensional models. One experiment analysed in the framework of the International Reactor Physics Benchmark Experiments (IRPhE) project is SNEAK-7A. This assembly is characterised by a Pu-fuelled fast critical assembly in the Karlsruhe Fast Critical Facility for the purpose of testing cross section data and calculational methods. As the detailed information on the SNEAK-7A benchmark experiment becomes available, the purpose of this paper is to model this experiment as closely as possible to the configuration as it existed in the critical facility. The experimental keff was determined to be 1.0010, which is 29.6 cents supercritical. The realistic modelling of the SNEAK-7A assembly was performed using the DANTSYS code capability for X-Y-Z geometry. The calculated core eigenvalue from THREEDANT is 1.00975. With corrections applied for core plate cell heterogeneity and mesh sizes, the best-estimate core criticality with JEF-2.2-based cross-sections turns out to be 1.01137. While the plate heterogeneity effect from flux redistribution was at first estimated to be as large as 387 pcm from plate cell calculations, it proves to be 142 pcm when the core-wide heterogeneity effects are accounted for. In order to figure out the over-prediction of core eigenvalue, spectral indices are investigated, which led to projecting that the 238U capture cross-sections are being underestimated. This fact is confirmed in the comparison of the central material worth of 238U with the measured value. When the sensitivity of core eigenvalue to the cross section is used, the newly estimated core eigenvalue is 1.00175, which is very close to the measured core eigenvalue, when the 238U capture cross-section was assumed to increase by 5% implied from the comparison of spectral indices. Once the details in the old critical experiments are

  16. Analysis of Sneak-7A critical benchmark using 3-D deterministic transport and sensitivity analysis methods

    Energy Technology Data Exchange (ETDEWEB)

    Kim, S.J. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Kodeli, I.; Sartori, E. [OECD NEA DataBank, 92 - Issy les Moulineaux (France)

    2003-07-01

    Some high-quality reactor physics benchmark experiments are being re-evaluated with today's state-of-the-art methods, particularly using that of detailed 3-dimensional models. One experiment analysed in the framework of the International Reactor Physics Benchmark Experiments (IRPhE) project is SNEAK-7A. This assembly is characterised by a Pu-fuelled fast critical assembly in the Karlsruhe Fast Critical Facility for the purpose of testing cross section data and calculational methods. As the detailed information on the SNEAK-7A benchmark experiment becomes available, the purpose of this paper is to model this experiment as closely as possible to the configuration as it existed in the critical facility. The experimental keff was determined to be 1.0010, which is 29.6 cents supercritical. The realistic modelling of the SNEAK-7A assembly was performed using the DANTSYS code capability for X-Y-Z geometry. The calculated core eigenvalue from THREEDANT is 1.00975. With corrections applied for core plate cell heterogeneity and mesh sizes, the best-estimate core criticality with JEF-2.2-based cross-sections turns out to be 1.01137. While the plate heterogeneity effect from flux redistribution was at first estimated to be as large as 387 pcm from plate cell calculations, it proves to be 142 pcm when the core-wide heterogeneity effects are accounted for. In order to figure out the over-prediction of core eigenvalue, spectral indices are investigated, which led to projecting that the {sup 238}U capture cross-sections are being underestimated. This fact is confirmed in the comparison of the central material worth of {sup 238}U with the measured value. When the sensitivity of core eigenvalue to the cross section is used, the newly estimated core eigenvalue is 1.00175, which is very close to the measured core eigenvalue, when the {sup 238}U capture cross-section was assumed to increase by 5% implied from the comparison of spectral indices. Once the details in the old critical

  17. Logistics systems optimization under competition

    DEFF Research Database (Denmark)

    Choi, Tsan Ming; Govindan, Kannan; Ma, Lijun

    2015-01-01

    Nowadays, optimization on logistics and supply chain systems is a crucial and critical issue in industrial and systems engineering. Important areas of logistics and supply chain systems include transportation control, inventory management, and facility location planning. Under a competitive market...

  18. Analytical benchmarks for nuclear engineering applications. Case studies in neutron transport theory

    International Nuclear Information System (INIS)

    Preservation of know-how in the nuclear field is promoted through the activities of the OECD Nuclear Energy Agency Data Bank. One area of importance concerns methods for solving radiation transport problems, especially with regard to neutrons. This handbook (in the form of a case study), prepared by Barry D Ganapol, is the result of such an initiative. It is a compilation of solutions to the transport equation for which analytical representations can be found. It is designed for educational use in courses on analytical transport methods and numerical methods with application to reactor physics. In addition, it contains elements for the continuous improvement of transport methods and for computer code verification. The areas of neutron slowing down, thermalization and one-, two- and three-dimensional neutron transport theory are covered. A series of training courses, based on this compilation of solutions has recently begun. (author)

  19. Solution of a stylized European Pressurized Reactor (EPR) benchmark problem using the coarse mesh radiation transport method (COMET)

    International Nuclear Information System (INIS)

    In this paper, as additional verification of its accuracy and efficiency, the coarse mesh radiation transport code COMET is compared to Monte Carlo solutions in a stylized benchmark problem based on the European Pressurized Reactor (EPR). The core specifications were taken directly from the Final Safety Analysis Report (FSAR) submitted to the Nuclear Regulatory Commission (NRC) and the reactor was modeled in a stylized manner while maintaining full heterogeneity at the pin and assembly level. Detailed results including assembly eigenvalues, core eigenvalues, and pin fission densities using a 2-group cross section library are presented. COMET results are in excellent agreement with MCNP with eigenvalue relative differences on the order of 10 pcm and average pin fission density relative differences on the order of 1-5%. Some maximum errors were on the order of 10% due to poor statistics on the periphery of the core in the reference results. (author)

  20. The development of logistics centres : important factor of increasing transport sector efficiency = Razvitije logistitsheskihh tsentrov : vazhnõi faktor uvelitshenija effektivnosti transportnogo sektora / Algirdas Sakalys

    Index Scriptorium Estoniae

    Sakalys, Algirdas

    2003-01-01

    Ettekanne 3.-4. detsembrini 2003 Tallinnas toimunud rahvusvahelisel konverents-näitusel "Logistics and transport in international trade" teeb ülevaate Leedu transpordisüsteemi olukorrast, arengustrateegiast ja reformidest, lähtudes Euroopa Liidu transpordipoliitika tegevuskavast. Kaardid. Diagramm. Tabel

  1. Meeting Skills Needs in a Market-Based Training System: A Study of Employer Perceptions and Responses to Training Challenges in the Australian Transport and Logistics Industry

    Science.gov (United States)

    Gekara, Victor O.; Snell, Darryn; Chhetri, Prem; Manzoni, Alex

    2014-01-01

    Many countries are adopting market-based training systems to address industry skills needs. This paper examines the marketisation of Australia's training system and the implications for training provision and outcomes in the Transport and Logistics industry. Drawing on qualitative interviews from industry employers and training providers, we…

  2. Logistics and Inventory System

    Data.gov (United States)

    Department of Transportation — The Logistics and Inventory System (LIS) is the agencys primary supply/support automation tool. The LIS encompasses everything from order entry by field specialists...

  3. Framing Social Inclusion as a Benchmark for Cycling-Inclusive Transport Policy in Kisumu, Kenya

    OpenAIRE

    Walter Alando; Joachim Scheiner

    2016-01-01

    Cycling in many cities of the Global South faces unending exclusion from street spaces despite the on-going transport policy reforms. This exclusion worsens the marginalisation of the poor majority who use this mode. In this paper, we formulate social inclusion as a policy tool for reconciling transport policy to the cycling needs of Kisumu, Kenya. We draw from social quality theory and Lefebvre’s right to the city concept to assemble the ideals of social inclusion. These ideals form the benc...

  4. TORT solutions to the NEA suite of benchmarks for 3D transport methods and codes over a range in parameter space

    International Nuclear Information System (INIS)

    We present the TORT solutions to the 3D transport codes' suite of benchmarks exercise. An overview of benchmark configurations is provided, followed by a description of the TORT computational model we developed to solve the cases comprising the benchmark suite. In the numerical experiments reported in this paper, we chose to refine the spatial and angular discretizations simultaneously, from the coarsest model (40 x 40 x 40, 200 angles) to the finest model (160 x 160 x 160, 800 angles). The MCNP reference solution is used for evaluating the effect of model-refinement on the accuracy of the TORT solutions. The presented results show that the majority of benchmark quantities are computed with good accuracy by TORT, and that the accuracy improves with model refinement. However, this deliberately severe test has exposed some deficiencies in both deterministic and stochastic solution approaches. Specifically, TORT fails to converge the inner iterations in some benchmark configurations while MCNP produces zero tallies, or drastically poor statistics for some benchmark quantities. We conjecture that TORT's failure to converge is driven by ray effects in configurations with low scattering ratio and/or highly skewed computational cells, i.e. aspect ratio far from unity. The failure of MCNP occurs in quantities tallied over a very small area or volume in physical space, or quantities tallied many (∼25) mean free paths away from the source. Hence automated, robust, and reliable variance reduction techniques are essential for obtaining high quality reference values of the benchmark quantities. Preliminary results of the benchmark exercise indicate that the occasionally poor performance of TORT is shared with other deterministic codes. Armed with this information, method developers can now direct their attention to regions in parameter space where such failures occur and design alternative solution approaches for such instances

  5. Intercomparison of the finite difference and nodal discrete ordinates and surface flux transport methods for a LWR pool-reactor benchmark problem in X-Y geometry

    International Nuclear Information System (INIS)

    The aim of the present work is to compare and discuss the three of the most advanced two dimensional transport methods, the finite difference and nodal discrete ordinates and surface flux method, incorporated into the transport codes TWODANT, TWOTRAN-NODAL, MULTIMEDIUM and SURCU. For intercomparison the eigenvalue and the neutron flux distribution are calculated using these codes in the LWR pool reactor benchmark problem. Additionally the results are compared with some results obtained by French collision probability transport codes MARSYAS and TRIDENT. Because the transport solution of this benchmark problem is close to its diffusion solution some results obtained by the finite element diffusion code FINELM and the finite difference diffusion code DIFF-2D are included

  6. Challenges of Green Logistics in Southeast Europe

    OpenAIRE

    Beškovnik, Bojan; Jakomin, Livio

    2010-01-01

    This paper describes the trends towards green logistics in global aspect and challenges of adopting green logistics in the region of Southeast Europe. Modern logistics with supply chain management is experiencing a period of important evolution. From reversible logistics, we came to green logistics, which is a wider concept of environmentally friendly thinking. Reverse logistics includes processes of movements and transportation of waste from users to recycling plants; meanwhile, green logist...

  7. Barriers to and enablers for European rail freight transport for integrated door-to-door logistics service. Part 1: Barriers to multimodal rail freight transport

    Directory of Open Access Journals (Sweden)

    Dewan Md Zahurul ISLAM

    2014-09-01

    Full Text Available The objective of this paper is to examine and identify barriers to and enablers for the European rail freight transport services as a transport chain partner along the supply chains in the changing market scenario. The changing market scenario includes, among others, requiring 'door-to-door' rather than 'terminal to terminal' and integrated service, competitive ability to attract non-rail cargo type, changes in the customer requirements (e.g. reliable service and changes in the operational requirements and practices. Using a literature review method, the paper is presented in two parts. The part 1 focuses on the identification of barriers to the European rail freight service by reviewing freight logistics services for global supply chains followed by the current performance of European rail freight transport followed by a discussion on the rail freight market liberalisation in Europe. Then rail freight transport in the Unites States (U.S. is discussed. The research notes that although the background, scope and necessity for reform measures in Europe differ from those of the U.S., some lessons can be learned and the main lesson is that an appropriate reform measure can enhance rail sector competitive ability in Europe. Examining and identifying the barriers in the part 1 (with the pan-Pacific examples of rail freight transports, the part 2 of the paper focuses on recommending clear actions and steps as enablers for the rail freight industry in general and operators in particular. The research in part 1 of the paper finds that: •\tIn many European countries, the rail freight market is not fully liberalised. In such market segment, infrastructure managers do act independently for incumbents and new entrant operators that hamper the progress of building a competitive market; •\tThe rail operators have not yet achieved the service quality (e.g. customer tailored service needed for the modern supply chains; •\tThey operate

  8. Benchmarking study of industry practices during commercial long haul transport of cattle in Alberta, Canada.

    Science.gov (United States)

    González, L A; Schwartzkopf-Genswein, K S; Bryan, M; Silasi, R; Brown, F

    2012-10-01

    The objective of the present study was to document current commercial practices during long haul transport (≥400 km) of cattle in Alberta through surveys delivered to truck drivers (6,152 journeys that transported 290,362 animals). The live beef export industry to the United States (89% of all journeys) had a large influence on long haul transport. This was particularly true for fat cattle going to slaughter (82%) and backgrounded feeders going to feed yards (15%). Most drivers had either limited (31% with 10 yr) experience hauling cattle. The type of tractors and trailers used most frequently were those with more number of axles (quad-axle trailers pulled with push tractors) because they can accommodate extra weight. Mean (± SD) distance travelled was 1,081 ± 343 km (maximum of 2,560 km) whereas time animals spent on truck averaged 15.9 ± 6.3 h with a maximum of 45 h. However, only 5% of all journeys were greater than 30 h. The most frequent cause of delay was at the Canada-United States border crossing due to paperwork and veterinary inspections. Border delays occurred on 77% of all journeys which had a mean of 1.3 ± 1.9 h and up to 15-h long. Driver rest stops and waiting to unload cattle at destination were the second most frequent and longest cause of delay. Ambient temperature across all journeys ranged from -42 to 45°C with a mean value of 18 ± 11.8°C while temperature variation within a journey was from 0 to 46°C with mean value of 15 ± 6.6°C. The proportion of dead, non-ambulatory, and lame cattle for all journeys was 0.011, 0.022, and 0.011%, respectively. The cattle transport industry showed compliance with federal regulations and to a lesser extent with recommendations. Findings showed extreme values and very large variability in transport conditions however further research is needed to assess their impact on animal welfare outcomes. Delays within the journey as a result of border crossing, weather conditions, time on truck, shrink and

  9. Benchmarking the invariant embedding method against analytical solutions in model transport problems

    OpenAIRE

    Wahlberg Malin; Pázsit Imre

    2006-01-01

    The purpose of this paper is to demonstrate the use of the invariant embedding method in a few model transport problems for which it is also possible to obtain an analytical solution. The use of the method is demonstrated in three different areas. The first is the calculation of the energy spectrum of sputtered particles from a scattering medium without absorption, where the multiplication (particle cascade) is generated by recoil production. Both constant and energy dependent cross-sections ...

  10. 基于产运系数法的物流需求量预测研究%Forecasting of Logistic Demand Based on Production and Transportation Coefficient

    Institute of Scientific and Technical Information of China (English)

    冯淑贞

    2013-01-01

    结合我国社会物流统计制度确立的指标体系,对传统的以货运量为核心的物流预测方法的优缺点进行了分析.在此基础上提出了产运系数法,是从物流基本概念出发的物流需求量计算方法,并采用该方法对某地区的运输量、库存量、配送量、全社会物流需求量、第三方物流需求量进行了预测.%In this paper,in connection with the index system determined in the social logistics statistics system of China,we analyzed the strength and weakness of the traditional logistics forecasting processes centered on cargo transport volume,on the basis of which,we proposed the logistics demand calculation method based on production and transportation coefficient,and applied it to the forecasting of the third party logistics demand ofacertain area.

  11. Agent code: Neutron transport benchmark example and extension to 3D lattice geometry

    Directory of Open Access Journals (Sweden)

    Hursin Mathieu

    2005-01-01

    Full Text Available The general methodology be hind 2D arbitrary geometry neutron transport AGENT code is the theory of R-functions, which al lows for simple modeling of complex geometries, and the method of characteristics, which solves the integral transport equation along characteristic neutron trajectories. This paper focuses on the extension of the methodology to ac count for 3D lattice geometries. Since the direct application of method of characteristics to 3D non-homogenized core con figuration may re quire a tremendous amount of memory and computing time, an alternative approximate solution based on coupling 2D method of characteristics and 1D diffusion solution is developed. The planar 2D method of characteristics and axial 1D diffusion solutions are coupled through the trans verse leak age. The use of a lower order 1D solution in the axial direction is justified by the fact that more heterogeneity in current PWR and BWR reactor cores occurs in the radial direction than in the axial one. In order to demonstrate the versatility and accuracy of the AGENT code, a 2D heterogeneous lattice problem, C5G7 is described in details. A theoretical description of the coupling methodology for 3D method of characteristics solution is followed by preliminary validation in comparison to the DeCART code.

  12. Cost evaluation of alternative switchgrass producing, harvesting, storing, and transporting systems and their logistics in the Southeastern USA

    OpenAIRE

    Larson, James A.; Tun-Hsiang (Edward) Yu; Burton C. English; Mooney, Daniel F.; Chenguang Wang

    2010-01-01

    Purpose – The US Department of Energy has a goal to make ethanol from biomass cost competitive with petroleum by 2012. Feedstock procurement is expected to represent a significant portion of the operating costs for a refinery that produces ethanol from biomass such as switchgrass. Thus, cost-effective feedstock logistics will be a key factor for the future development of a capital intensive cellulosic ethanol industry. The purpose of this paper is to analyze the cost of various logistic metho...

  13. Integral transport in a three region sphere with associated benchmark problems

    International Nuclear Information System (INIS)

    We derive, by the method of characteristics, an integral form of the transport equation with isotropic scattering for spherical symmetry in which the spatial dependence of the cross-sections is arbitrary. The sources of particles (photons or neutrons) can be either incident on the surface with an arbitrary angular distribution or distributed within the body. A specific example is given for the case of a three region sphere in the form of a central spherical core surrounded by a concentric shell followed by an outer shell. By allowing the total cross-section to go to zero in any one of the regions we may evaluate the effect of voids. Some numerical results are given which enable the limitations of void representation in a standard computer code to be highlighted. We also consider the case of a multiplying system and calculate the effect of an annular void on the multiplication factor

  14. Experimental Transport Benchmarks for Physical Dosimetry to Support Development of Fast-Neutron Therapy with Neutron Capture Augmentation

    Energy Technology Data Exchange (ETDEWEB)

    D. W. Nigg; J. K. Hartwell; J. R. Venhuizen; C. A. Wemple; R. Risler; G. E. Laramore; W. Sauerwein; G. Hudepohl; A. Lennox

    2006-06-01

    The Idaho National Laboratory (INL), the University of Washington (UW) Neutron Therapy Center, the University of Essen (Germany) Neutron Therapy Clinic, and the Northern Illinois University(NIU) Institute for Neutron Therapy at Fermilab have been collaborating in the development of fast-neutron therapy (FNT) with concurrent neutron capture (NCT) augmentation [1,2]. As part of this effort, we have conducted measurements to produce suitable benchmark data as an aid in validation of advanced three-dimensional treatment planning methodologies required for successful administration of FNT/NCT. Free-beam spectral measurements as well as phantom measurements with Lucite{trademark} cylinders using thermal, resonance, and threshold activation foil techniques have now been completed at all three clinical accelerator facilities. The same protocol was used for all measurements to facilitate intercomparison of data. The results will be useful for further detailed characterization of the neutron beams of interest as well as for validation of various charged particle and neutron transport codes and methodologies for FNT/NCT computational dosimetry, such as MCNP [3], LAHET [4], and MINERVA [5].

  15. Mixed quantum-classical simulations of charge transport in organic materials: Numerical benchmark of the Su-Schrieffer-Heeger model

    International Nuclear Information System (INIS)

    The electron-phonon coupling is critical in determining the intrinsic charge carrier and exciton transport properties in organic materials. In this study, we consider a Su-Schrieffer-Heeger (SSH) model for molecular crystals, and perform numerical benchmark studies for different strategies of simulating the mixed quantum-classical dynamics. These methods, which differ in the selection of initial conditions and the representation used to solve the time evolution of the quantum carriers, are shown to yield similar equilibrium diffusion properties. A hybrid approach combining molecular dynamics simulations of nuclear motion and quantum-chemical calculations of the electronic Hamiltonian at each geometric configuration appears as an attractive strategy to model charge dynamics in large size systems ''on the fly,'' yet it relies on the assumption that the quantum carriers do not impact the nuclear dynamics. We find that such an approximation systematically results in overestimated charge-carrier mobilities, with the associated error being negligible when the room-temperature mobility exceeds ∼4.8 cm2/Vs (∼0.14 cm2/Vs) in one-dimensional (two-dimensional) crystals.

  16. GREEN LOGISTICS IN RUSSIA

    OpenAIRE

    GROMOV VLADIMIR

    2014-01-01

    The approach of making business with a complete ignorance of sustainable logistics is no longer works in the international market. Meanwhile, the national enterprises are interested in green technologies for cost reductions purposes rather then setting major priority. With the reference to the existing situation on Russian transport market, the article analyses the green logistics activities. The focus is made on the technologies that are not mandatory for regulations but bring benefits to th...

  17. Lunar Commercial Mining Logistics

    Science.gov (United States)

    Kistler, Walter P.; Citron, Bob; Taylor, Thomas C.

    2008-01-01

    Innovative commercial logistics is required for supporting lunar resource recovery operations and assisting larger consortiums in lunar mining, base operations, camp consumables and the future commercial sales of propellant over the next 50 years. To assist in lowering overall development costs, ``reuse'' innovation is suggested in reusing modified LTS in-space hardware for use on the moon's surface, developing product lines for recovered gases, regolith construction materials, surface logistics services, and other services as they evolve, (Kistler, Citron and Taylor, 2005) Surface logistics architecture is designed to have sustainable growth over 50 years, financed by private sector partners and capable of cargo transportation in both directions in support of lunar development and resource recovery development. The author's perspective on the importance of logistics is based on five years experience at remote sites on Earth, where remote base supply chain logistics didn't always work, (Taylor, 1975a). The planning and control of the flow of goods and materials to and from the moon's surface may be the most complicated logistics challenges yet to be attempted. Affordability is tied to the innovation and ingenuity used to keep the transportation and surface operations costs as low as practical. Eleven innovations are proposed and discussed by an entrepreneurial commercial space startup team that has had success in introducing commercial space innovation and reducing the cost of space operations in the past. This logistics architecture offers NASA and other exploring nations a commercial alternative for non-essential cargo. Five transportation technologies and eleven surface innovations create the logistics transportation system discussed.

  18. Benchmarking the invariant embedding method against analytical solutions in model transport problems

    International Nuclear Information System (INIS)

    The purpose of this paper is to demonstrate the use of the invariant embedding method in a series of model transport problems, for which it is also possible to obtain an analytical solution. Due to the non-linear character of the embedding equations, their solution can only be obtained numerically. However, this can be done via a robust and effective iteration scheme. In return, the domain of applicability is far wider than the model problems investigated in this paper. The use of the invariant embedding method is demonstrated in three different areas. The first is the calculation of the energy spectrum of reflected (sputtered) particles from a multiplying medium, where the multiplication arises from recoil production. Both constant and energy dependent cross sections with a power law dependence were used in the calculations. The second application concerns the calculation of the path length distribution of reflected particles from a medium without multiplication. This is a relatively novel and unexpected application, since the embedding equations do not resolve the depth variable. The third application concerns the demonstration that solutions in an infinite medium and a half-space are interrelated through embedding-like integral equations, by the solution of which the reflected flux from a half-space can be reconstructed from solutions in an infinite medium or vice versa. In all cases the invariant embedding method proved to be robust, fast and monotonically converging to the exact solutions. (authors)

  19. Benchmarking the invariant embedding method against analytical solutions in model transport problems

    Directory of Open Access Journals (Sweden)

    Wahlberg Malin

    2006-01-01

    Full Text Available The purpose of this paper is to demonstrate the use of the invariant embedding method in a few model transport problems for which it is also possible to obtain an analytical solution. The use of the method is demonstrated in three different areas. The first is the calculation of the energy spectrum of sputtered particles from a scattering medium without absorption, where the multiplication (particle cascade is generated by recoil production. Both constant and energy dependent cross-sections with a power law dependence were treated. The second application concerns the calculation of the path length distribution of reflected particles from a medium without multiplication. This is a relatively novel application, since the embedding equations do not resolve the depth variable. The third application concerns the demonstration that solutions in an infinite medium and in a half-space are interrelated through embedding-like integral equations, by the solution of which the flux reflected from a half-space can be reconstructed from solutions in an infinite medium or vice versa. In all cases, the invariant embedding method proved to be robust, fast, and monotonically converging to the exact solutions.

  20. Suite of Benchmark Tests to Conduct Mesh-Convergence Analysis of Nonlinear and Non-constant Coefficient Transport Codes

    Science.gov (United States)

    Zamani, K.; Bombardelli, F. A.

    2014-12-01

    Verification of geophysics codes is imperative to avoid serious academic as well as practical consequences. In case that access to any given source code is not possible, the Method of Manufactured Solution (MMS) cannot be employed in code verification. In contrast, employing the Method of Exact Solution (MES) has several practical advantages. In this research, we first provide four new one-dimensional analytical solutions designed for code verification; these solutions are able to uncover the particular imperfections of the Advection-diffusion-reaction equation, such as nonlinear advection, diffusion or source terms, as well as non-constant coefficient equations. After that, we provide a solution of Burgers' equation in a novel setup. Proposed solutions satisfy the continuity of mass for the ambient flow, which is a crucial factor for coupled hydrodynamics-transport solvers. Then, we use the derived analytical solutions for code verification. To clarify gray-literature issues in the verification of transport codes, we designed a comprehensive test suite to uncover any imperfection in transport solvers via a hierarchical increase in the level of tests' complexity. The test suite includes hundreds of unit tests and system tests to check vis-a-vis the portions of the code. Examples for checking the suite start by testing a simple case of unidirectional advection; then, bidirectional advection and tidal flow and build up to nonlinear cases. We design tests to check nonlinearity in velocity, dispersivity and reactions. The concealing effect of scales (Peclet and Damkohler numbers) on the mesh-convergence study and appropriate remedies are also discussed. For the cases in which the appropriate benchmarks for mesh convergence study are not available, we utilize symmetry. Auxiliary subroutines for automation of the test suite and report generation are designed. All in all, the test package is not only a robust tool for code verification but it also provides comprehensive

  1. Benchmarking HRD.

    Science.gov (United States)

    Ford, Donald J.

    1993-01-01

    Discusses benchmarking, the continuous process of measuring one's products, services, and practices against those recognized as leaders in that field to identify areas for improvement. Examines ways in which benchmarking can benefit human resources functions. (JOW)

  2. Pore-scale and Continuum Simulations of Solute Transport Micromodel Benchmark Experiments

    Energy Technology Data Exchange (ETDEWEB)

    Oostrom, Martinus; Mehmani, Yashar; Romero Gomez, Pedro DJ; Tang, Y.; Liu, H.; Yoon, Hongkyu; Kang, Qinjun; Joekar Niasar, Vahid; Balhoff, Matthew; Dewers, T.; Tartakovsky, Guzel D.; Leist, Emily AE; Hess, Nancy J.; Perkins, William A.; Rakowski, Cynthia L.; Richmond, Marshall C.; Serkowski, John A.; Werth, Charles J.; Valocchi, Albert J.; Wietsma, Thomas W.; Zhang, Changyong

    2016-08-01

    Four sets of micromodel nonreactive solute transport experiments were conducted with flow velocity, grain diameter, pore-aspect ratio, and flow focusing heterogeneity as the variables. The data sets were offered to pore-scale modeling groups to test their simulators. Each set consisted of two learning experiments, for which all results was made available, and a challenge experiment, for which only the experimental description and base input parameters were provided. The experimental results showed a nonlinear dependence of the dispersion coefficient on the Peclet number, a negligible effect of the pore-aspect ratio on transverse mixing, and considerably enhanced mixing due to flow focusing. Five pore-scale models and one continuum-scale model were used to simulate the experiments. Of the pore-scale models, two used a pore-network (PN) method, two others are based on a lattice-Boltzmann (LB) approach, and one employed a computational fluid dynamics (CFD) technique. The learning experiments were used by the PN models to modify the standard perfect mixing approach in pore bodies into approaches to simulate the observed incomplete mixing. The LB and CFD models used these experiments to appropriately discretize the grid representations. The continuum model use published non-linear relations between transverse dispersion coefficients and Peclet numbers to compute the required dispersivity input values. Comparisons between experimental and numerical results for the four challenge experiments show that all pore-scale models were all able to satisfactorily simulate the experiments. The continuum model underestimated the required dispersivity values and, resulting in less dispersion. The PN models were able to complete the simulations in a few minutes, whereas the direct models needed up to several days on supercomputers to resolve the more complex problems.

  3. Multidimensional benchmarking

    OpenAIRE

    Campbell, Akiko

    2016-01-01

    Benchmarking is a process of comparison between performance characteristics of separate, often competing organizations intended to enable each participant to improve its own performance in the marketplace (Kay, 2007). Benchmarking sets organizations’ performance standards based on what “others” are achieving. Most widely adopted approaches are quantitative and reveal numerical performance gaps where organizations lag behind benchmarks; however, quantitative benchmarking on its own rarely yi...

  4. Analytical solutions for benchmarking cold regions subsurface water flow and energy transport models: one-dimensional soil thaw with conduction and advection

    Science.gov (United States)

    Kurylyk, Barret L.; McKenzie, Jeffrey M; MacQuarrie, Kerry T. B.; Voss, Clifford I.

    2014-01-01

    Numerous cold regions water flow and energy transport models have emerged in recent years. Dissimilarities often exist in their mathematical formulations and/or numerical solution techniques, but few analytical solutions exist for benchmarking flow and energy transport models that include pore water phase change. This paper presents a detailed derivation of the Lunardini solution, an approximate analytical solution for predicting soil thawing subject to conduction, advection, and phase change. Fifteen thawing scenarios are examined by considering differences in porosity, surface temperature, Darcy velocity, and initial temperature. The accuracy of the Lunardini solution is shown to be proportional to the Stefan number. The analytical solution results obtained for soil thawing scenarios with water flow and advection are compared to those obtained from the finite element model SUTRA. Three problems, two involving the Lunardini solution and one involving the classic Neumann solution, are recommended as standard benchmarks for future model development and testing.

  5. Logistics outsourcing

    OpenAIRE

    Srabotič, Aldo; Ruzzier, Mitja

    2013-01-01

    This paper investigates key success factors in logistics outsourcing. A model is used to illustrate outsourcing relationships and then applied to three examples from the logistics sector. The model is presented as a tool which can help managers to minimize the chance of failure by explicitly addressing key issues prior to the implementation of a partnership. In order to fully capture the complexity of the outsourcing process, the model is refined by the analysis of implementation of outsourci...

  6. Logistic Regression

    Science.gov (United States)

    Grégoire, G.

    2014-12-01

    The logistic regression originally is intended to explain the relationship between the probability of an event and a set of covariables. The model's coefficients can be interpreted via the odds and odds ratio, which are presented in introduction of the chapter. The observations are possibly got individually, then we speak of binary logistic regression. When they are grouped, the logistic regression is said binomial. In our presentation we mainly focus on the binary case. For statistical inference the main tool is the maximum likelihood methodology: we present the Wald, Rao and likelihoods ratio results and their use to compare nested models. The problems we intend to deal with are essentially the same as in multiple linear regression: testing global effect, individual effect, selection of variables to build a model, measure of the fitness of the model, prediction of new values… . The methods are demonstrated on data sets using R. Finally we briefly consider the binomial case and the situation where we are interested in several events, that is the polytomous (multinomial) logistic regression and the particular case of ordinal logistic regression.

  7. Development of a Computer Program for an Analysis of the Logistics and Transportation Costs of the PWR Spent Fuels in Korea

    International Nuclear Information System (INIS)

    It is expected that a substantial amount of spent fuels will be transported from the four nuclear power plant (NPP) sites in Korea to a hypothetical centralized interim storage facility or a final repository in the near future. The cost for the transportation is proportional to the amount of spent fuels. In this paper, a cost estimation program is developed based on the conceptual design of a transportation system and a logistics analysis. Using the developed computer program, named as CASK, the minimum capacity of a centralized interim storage facility (CISF) and the transportation cost for PWR spent fuels are calculated. The PWR spent fuels are transported from 4 NPP sites to a final repository (FR) via the CISF. Since NPP sites and the CISF are located along the coast, a sea-transportation is considered and a road-transportation is considered between the CISF and the FR. The result shows that the minimum capacity of the interim storage facility is 15,000 MTU

  8. The impacts of logistic sprawl: how does the location of parcel transport terminals affect the energy efficiency of goods' movements in Paris and what can we do about it?

    OpenAIRE

    DABLANC,L; RAKOTONARIVO,D

    2009-01-01

    In this communication, we propose to identify the location of parcel transport terminals in the Paris region (the Ile-de-France), and to discuss its impacts on Paris urban goods' movements and their carbon footprint. We present the gradual relocation of parcel transport's terminals from the urban cores in the 1970s to the outer suburban today. We evaluate whether this movement of logistic sprawl (the historic trend towards spatial deconcentration of logistic terminals in metropolitan areas) h...

  9. Financial benchmarking

    OpenAIRE

    Boldyreva, Anna

    2014-01-01

    This bachelor's thesis is focused on financial benchmarking of TULIPA PRAHA s.r.o. The aim of this work is to evaluate financial situation of the company, identify its strengths and weaknesses and to find out how efficient is the performance of this company in comparison with top companies within the same field by using INFA benchmarking diagnostic system of financial indicators. The theoretical part includes the characteristic of financial analysis, which financial benchmarking is based on a...

  10. Good practice examples for the management and logistics of organic urban waste: Urban waste for biomethane grid injection and transport in urban areas

    OpenAIRE

    Niklass, M.; Pubule, J.; Hahn, H.; Rutz, D.; Günert, D.; Surowiec, D.; Ribic, B.; Schinnerl, D.

    2012-01-01

    This report was elaborated in the framework of the UrbanBiogas project (Urban waste for biomethane grid injection and transport in urban areas). The objective of this report is to show in short factsheets 11 examples of the management and logistics of organic urban waste in different European countries. This should provide input to the UrbanBiogas target cities City of Zagreb (Croatia), Municipality of Abrantes (Portugal), City of Graz (Austria), City of Rzeszów (Poland), and North Vidzeme Re...

  11. COG: A particle transport code designed to solve the Boltzmann equation for deep-penetration (shielding) problems: Benchmark problems: Volume 4

    Energy Technology Data Exchange (ETDEWEB)

    Wilcox, T.P. Jr.; Lent, E.M.

    1988-12-02

    COG is a Monte Carlo computer code designed to solve the Boltzmann equation for transporting neutrons and photons and in future versions, charged particles. Sixty-four different problems were run using the current versions of the COG code on Cray-1 and Cray/X-MP computers. In all cases, the calculated COG results either agree with the values known analytically for some problems or are within the statistical and uncertainties determined experimentally for the others. Problems such as these are referred to benchmark problems and form an important part of the validation of any new computer code. Benchmark problems are of value in that they are used to: check that the code works correctly; check that the physical data used in the code are correct; check that the user has learned to run the code properly; and understand the inherent errors associated with the calculated results. 22 refs., 21 figs., 10 tabs.

  12. Logistical challenges

    Directory of Open Access Journals (Sweden)

    Steve Matthews

    2005-07-01

    Full Text Available The impact of the Asian tsunami was unprecedented and the logistical challenges of meeting the needs of those affected were enormous. Had the tsunami happened even five years ago, World Vision would not have been able to respond nearly as effectively as it did.

  13. The effect of coupled mass transport and internal reforming on modeling of solid oxide fuel cells part II: Benchmarking transient response and dynamic model fidelity assessment

    Science.gov (United States)

    Albrecht, Kevin J.; Braun, Robert J.

    2016-02-01

    One- and 'quasi' two-dimensional (2-D) dynamic, interface charge transport models of a solid oxide fuel cell (SOFC) developed previously in a companion paper, are benchmarked against other models and simulated to evaluate the effects of coupled transport and chemistry. Because the reforming reaction can distort the concentration profiles of the species within the anode, a 'quasi' 2-D model that captures porous media mass transport and electrochemistry is required. The impact of a change in concentration at the triple-phase boundary is twofold wherein the local Nernst potential and anode exchange current densities are influenced, thereby altering the current density and temperature distributions of the cell. Thus, the dynamic response of the cell models are compared, and benchmarked against previous channel-level models to gauge the relative importance of capturing in-situ reforming phenomena on cell performance. Simulation results indicate differences in the transient electrochemical response for a step in current density where the 'quasi' 2-D model predicts a slower rise and fall in cell potential due to the additional volume of the porous media and mass transport dynamics. Delays in fuel flow rate are shown to increase the difference observed in the electrochemical response of the cells.

  14. Case Study on Logistics Performance

    Directory of Open Access Journals (Sweden)

    Shahryar Sorooshian

    2013-05-01

    Full Text Available The paper presents research carried out at a medium‐size manufacturing organization in east Asia. The study tries to highlight the importance of supply chain management; specifically, our aim for this study is to understand logistics and performance measurement in the logistics and supply chain, and we include a theoretical discussion of online data collected and a case study of the logistic performance of a real organization. The study also examines the performance of the selected company, identifies the problems and provides recommendations for improvements. This study can be a guide for business advisers and those interested in analysing company performance, especially from a logistics viewpoint. We also suggest the methodology of this case study for those who want to have a better understanding of a business environment before starting their own business, or for benchmarking practice during strategic planning.

  15. Benchmark selection

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth; Tvede, Mich

    2002-01-01

    Within a production theoretic framework, this paper considers an axiomatic approach to benchmark selection. It is shown that two simple and weak axioms; efficiency and comprehensive monotonicity characterize a natural family of benchmarks which typically becomes unique. Further axioms are added in...... order to obtain a unique selection...

  16. Interactive benchmarking

    DEFF Research Database (Denmark)

    Lawson, Lartey; Nielsen, Kurt

    2005-01-01

    We discuss individual learning by interactive benchmarking using stochastic frontier models. The interactions allow the user to tailor the performance evaluation to preferences and explore alternative improvement strategies by selecting and searching the different frontiers using directional...... suggested benchmarking tool. The study investigates how different characteristics on dairy farms influences the technical efficiency....

  17. Precious benchmarking

    International Nuclear Information System (INIS)

    Recently, there has been a new word added to our vocabulary - benchmarking. Because of benchmarking, our colleagues travel to power plants all around the world and guests from the European power plants visit us. We asked Marek Niznansky from the Nuclear Safety Department in Jaslovske Bohunice NPP to explain us this term. (author)

  18. THE CONCEPT OF ORGANIZING TRANSPORT AND LOGISTICS PROCESSES, TAKING INTO ACCOUNT THE ECONOMIC, SOCIAL AND ENVIRONMENTAL ASPECTS

    Directory of Open Access Journals (Sweden)

    Leszek MINDUR

    2015-12-01

    Full Text Available Current model of organization of supply chains results in inefficient use of transport resources, high transport costs, increasing congestions and CO2 emission. This effect has been demonstrated by research conducted by the authors as well as by the European Environmental Agency. This situation can be change by development of alternative business model for collaboration in organisation of the transport processes within the supply chains. The aim of this paper is to present practical implementation of the T-Scale platform that enables collaboration between independent transport users and transport service providers. Moreover, an overview of existing communication platform with its major functionalities are presented. The work is summarized by the major benefits of collaboration achieved by the group of companies operating in the FMCG sector in Poland.

  19. Logistics of LEP installation

    International Nuclear Information System (INIS)

    The size of the LEP project, coupled with the tight construction schedules, calls for organized planning, logistics, monitoring and control. This is being carried out at present using tools such as ORACLE the Relational Database Management System, running on a VAX cluster for data storage and transfer, micro-computers for on-site follow-up, and PC's running Professional ORACLE, DOS and XENIX linked to a communications network to receive data feedback concerning transport and handling means. Following over 2 years of installations, this paper presents the methods used for the logistics of installation and their results

  20. Long distance bioenergy logistics. An assessment of costs and energy consumption for various biomass energy transport chains

    International Nuclear Information System (INIS)

    In order to create the possibility of obtaining an insight in the key factors of the title system, a model has been developed, taking into account different production systems, pretreatment operations and transport options. Various transport chains were constructed, which were subjected to a sensitivity analysis with respect to factors like transport distance, fuel prices and equipment operation times. Scenarios are analysed for Latin-America and Europe for which the distinguishing parameters were assumed to be the transport distances and biomass prices. For both regions the analysis concerns a situation where ship transports are applied for a coastal and for an inland biomass supply. For European biomass a train transport was considered as well. In order to explore possibilities for improvement, the effects of these variables on costs and energy consumption within a chain, were assessed. Delivered biomass can be converted to power or methanol. Model results are as follows: Total costs for European bioenergy range from 11.2-21.2 euro/GJ MeOH for methanol and 17.4-28.0 euro/GJe for electricity. For Latin-America, costs ranges are 11.3-21.8 euro/GJ MeOH for methanol and 17.4-28.7 euro/GJe for electricity. The lower end of these ranges is represented by transport chains that are characterised by the use of high density energy carriers such as logs, pellets or liquid fuels (these are the most attractive for all scenarios considered). The transport of chips should be avoided categorically due to their low density and high production costs. Transport chains based on the early production of liquid energy carriers such as methanol or pyrolysis oil seem to be promising alternatives as well. With respect to energy consumption, the transport of chips is highly unfavourable for the same reasons as stated above. The use of pelletizing operations implies a high energy input, however due to energy savings as a result of more efficient transport operations, this energy loss is

  1. Efficiency and Logistics

    CERN Document Server

    Hompel, Michael; Klumpp, Matthias

    2013-01-01

    The „EffizienzCluster LogistikRuhr“ was a winner in the Leading Edge Science Cluster competition run by the German federal Ministry of Education and Research. The mission and aim of the „EffizienzCluster LogistikRuhr“ is to facilitate tomorrow’s individuality – in the sense of individual goods supply, mobility, and production – using 75 percent of today’s resources. Efficiency – both in economical and ecological terms – is enabled by state-of-the-art and innovative logistical solutions including transportation, production and intralogistics. These proceedings “Efficiency and Logistics” give first answers from 27 research projects as an insight into the current state of research of Europe’s leading research and development cluster in logistics and as a contribution to the discussion on how logistics as a science can help to cope with foreseeable resource shortage and sustainability as global challenges.

  2. Green Logistics Qualifikation in der Logistikpraxis

    OpenAIRE

    Keuschen, Thomas; Klumpp, Matthias

    2011-01-01

    Sustainability trends are to be found in logistics today as green logistics or product - respectively company - carbon footprints. Within this evolving field of logistics several research areas are developing such as CO2 measurement standardization, integrated management concepts and process changes in relation to the implementation of new transport mode and propulsion systems in cargo transport. But one major hurdle for the further implementation of green logistics concepts is the existing q...

  3. Typology of Logistics Curricula – Four Categories of Logistics of Logistics Undergraduate Education in Europe

    Directory of Open Access Journals (Sweden)

    Tarvo Niine

    2015-05-01

    Full Text Available The field of logistics education is rather colorful. The range of possible topics is huge and so each curriculum has unique approach towards which topic areas to emphasize and which to treat briefly or even omit. There is only little effective standardization in logistics education. This study examines the content of 42 undergraduate logistics curricula in Europe via cluster analysis, with a goal to propose a typology of logistics curricula. The findings define the spectrum of logistics education in four clusters, ranging from „business administration“ with little focus on most specific logistics topics, through „interdisciplinary logistics management“ and „modern transport management“ to „logistics engineering“ with a strong quantitative and technology approach. However, a problem remains that curriculum title does not always reflect actual profile. A typical title “logistics management” might in one case contain various engineering elements, but in another none at all. Such findings point out the need for curricula boards to decide, if trying to cover the entire scope by „one-size-fits-all“ program is the best option or if more distinct focus is needed. In both cases this decision needs to be intentional, agreed and clearly communicated to avoid confusing students and society. Furthermore, the study points out the need to refine standards of competences in logistics, especially for logistics engineering.

  4. Harvesting techniques and logistics of short rotation energy forestry. A descriptive study on harvest and transport systems in Salix production currently used in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    Meijden van der, G.P.M.; Gigler, J.K.

    1994-12-31

    This report is the result of a three month thesis project carried out at the Swedish Institute of Agricultural Engineering (JTI) in Uppsala, Sweden, on request of the Agricultural Engineering Department of Wageningen Agricultural University (WAU) and the Institute of Agricultural and Environmental Engineering (IMAG-DLO) in Wageningen. The main topic is the description of harvesting techniques and logistics of short rotation energy forestry currently being used in Sweden. Logistics range from the field to the end user. Also the cultivation method, labour, energy balance, management and costs and revenues are emphasized. For harvesting two methods are used: direct chipping and whole stem harvesting. For direct chipping three machines are available in Sweden: the Austoft, the Bender and the Claas Jaguar. So far the Claas is most liable, it has the highest capacity and it delivers good quality chips. Whole stem harvesting is done with the Froebbesta harvester and the Segerslaett Empire 2000. Both machines are not yet operating to full satisfaction and have to be modified. Still the basic techniques the machines are using seem to be successful. After harvest different systems can be used, described in this report: direct chipping with direct container transport to the combustion plant, whole stem harvesting with chipping done at or near the field and container transport by the farmer using a tractor and trailer, and transport of whole stems. In all these systems intermediate storage of chips or stems can be done. Chips can only be stored for a short period, stems can be stored at any location for a longer period. At harvest the moisture content of the wood fuel is 50%. Not all furnaces can take this fuel so it has to be dried first. 32 refs, 17 figs, 19 tabs

  5. Analysis and competitiveness in logistics

    OpenAIRE

    Eduard Dinu; Cristina Curea

    2008-01-01

    In the strategic analysis based on value chain concept, logistics represents main activities. Competing on the global market increase the importance of specific operations like transport of merchandise, warehouse exploitation, i.e. Creating and sustaining competitive advantage in the field of logistic activities is achievable through outsourcing or by in-house strategy. Choosing optimal ways to transport the merchandises, efficient warehouses design and utilization, adequate positioning oh th...

  6. Proceedings of the Canadian Institute conference on maximizing oil sands growth : improving transportation logistics, labour supply and pipeline availability

    International Nuclear Information System (INIS)

    This conference focused on the development of a transportation infrastructure to accommodate oil sands growth, with particular reference to building a pipeline infrastructure to meet the delivery and supply requirements of oil sands producers. The need for transmission system upgrades and additions to meet the electric power requirements of the oil sands industry was also discussed. The transportation options and new proposed pipeline construction projects that will alleviate the current transportation challenges in the oil sands region were identified. These include the implementation of new infrastructure strategies based on current pipeline availability, Kyoto requirements and downstream market demands. The impact of labour shortages on the oil sands industry was reviewed along with solutions to prevent and overcome these shortages. The conference featured 15 presentations, of which 3 have been catalogued separately for inclusion in this database. tabs., figs

  7. WLUP benchmarks

    International Nuclear Information System (INIS)

    The IAEA-WIMS Library Update Project (WLUP) is on the end stage. The final library will be released on 2002. It is a result of research and development made by more than ten investigators during 10 years. The organization of benchmarks for testing and choosing the best set of data has been coordinated by the author of this paper. It is presented the organization, name conventions, contents and documentation of WLUP benchmarks, and an updated list of the main parameters for all cases. First, the benchmarks objectives and types are given. Then, comparisons of results from different WIMSD libraries are included. Finally it is described the program QVALUE for analysis and plot of results. Some examples are given. The set of benchmarks implemented on this work is a fundamental tool for testing new multigroup libraries. (author)

  8. MCNP neutron benchmarks

    International Nuclear Information System (INIS)

    More than 50 neutron benchmark calculations have recently been completed as part of an ongoing program to validate the MCNP Monte Carlo radiation transport code. The benchmark calculations reported here are part of an ongoing multiyear, multiperson effort to benchmark version 4 of the MCNP code. The MCNP is a Monte Carlo three-dimensional general-purpose, continuous-energy neutron, photon, and electron transport code. It is used around the world for many applications including aerospace, oil-well logging, physics experiments, criticality safety, reactor analysis, medical imaging, defense applications, accelerator design, radiation hardening, radiation shielding, health physics, fusion research, and education. The first phase of the benchmark project consisted of analytic and photon problems. The second phase consists of the ENDF/B-V neutron problems reported in this paper and in more detail in the comprehensive report. A cooperative program being carried out a General Electric, San Jose, consists of light water reactor benchmark problems. A subsequent phase focusing on electron problems is planned

  9. Shielding Benchmark Computational Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Hunter, H.T.; Slater, C.O.; Holland, L.B.; Tracz, G.; Marshall, W.J.; Parsons, J.L.

    2000-09-17

    Over the past several decades, nuclear science has relied on experimental research to verify and validate information about shielding nuclear radiation for a variety of applications. These benchmarks are compared with results from computer code models and are useful for the development of more accurate cross-section libraries, computer code development of radiation transport modeling, and building accurate tests for miniature shielding mockups of new nuclear facilities. When documenting measurements, one must describe many parts of the experimental results to allow a complete computational analysis. Both old and new benchmark experiments, by any definition, must provide a sound basis for modeling more complex geometries required for quality assurance and cost savings in nuclear project development. Benchmarks may involve one or many materials and thicknesses, types of sources, and measurement techniques. In this paper the benchmark experiments of varying complexity are chosen to study the transport properties of some popular materials and thicknesses. These were analyzed using three-dimensional (3-D) models and continuous energy libraries of MCNP4B2, a Monte Carlo code developed at Los Alamos National Laboratory, New Mexico. A shielding benchmark library provided the experimental data and allowed a wide range of choices for source, geometry, and measurement data. The experimental data had often been used in previous analyses by reputable groups such as the Cross Section Evaluation Working Group (CSEWG) and the Organization for Economic Cooperation and Development/Nuclear Energy Agency Nuclear Science Committee (OECD/NEANSC).

  10. OECD/NEA burnup credit criticality benchmarks phase IIIA: Criticality calculations of BWR spent fuel assemblies in storage and transport

    International Nuclear Information System (INIS)

    The report describes the final results of Phase IIIA Benchmarks conducted by the Burnup Credit Criticality Calculation Working Group under the auspices of the Nuclear Energy Agency of the Organization for Economic Cooperation and Development (OECD/NEA). The benchmarks are intended to confirm the predictive capability of the current computer code and data library combinations for the neutron multiplication factor (keff) of a layer of irradiated BWR fuel assembly array model. In total 22 benchmark problems are proposed for calculations of keff. The effects of following parameters are investigated: cooling time, inclusion/exclusion of FP nuclides and axial burnup profile, and inclusion of axial profile of void fraction or constant void fractions during burnup. Axial profiles of fractional fission rates are further requested for five cases out of the 22 problems. Twenty-one sets of results are presented, contributed by 17 institutes from 9 countries. The relative dispersion of keff values calculated by the participants from the mean value is almost within the band of ±1%Δk/k. The deviations from the averaged calculated fission rate profiles are found to be within ±5% for most cases. (author)

  11. Assessment of the transport logistic and routing requirements associated with the disposal of intermediate level radioactive waste

    International Nuclear Information System (INIS)

    Preliminary results are presented relating to the transport of intermediate level radioactive waste. The data base from which these results were derived is stated together with a description of the computer simulation language used. From these results preliminary conclusions and recommendations are given. (author)

  12. The return of airships - report 2. Study on wind power expansion in Sweden with focus on transport and logistics issues; Luftskeppens aaterkomst - rapport 2. Studie om vindkraftens utbyggnad i Sverige med fokus paa transport och logistikfraagor

    Energy Technology Data Exchange (ETDEWEB)

    Lundin, Matts; Svensson, Ulf

    2011-11-15

    This study deals with the efforts carried out in Sweden in the wind power area as part of the adjustment process of the Swedish energy system. An effort which is important for achieving parliamentary climate goals and other objectives of the energy policy. The purpose of the study is to find attractive solutions to the transportation and logistics issues. If handled in a less advantageous way it can be costly for the society, the businesses, local residents, the natural systems and for the climate. The emphasis and main focus of the study is on transport- and logistics-related issues. First, we compared conventional transport solutions with the option to also use lighter-than-air technology, where the focus has been on comparisons of application and cost standpoint. Secondly, we have put the issues into a broader development framework as the expansion of wind power generates transports affecting use of existing infrastructure, building of new infrastructure and various ecosystem services as well as land use in general

  13. 企业物流运输中常见法律问题及对策%Countermeasures for Common Legal Issues in Enterprise Logistics Transportation

    Institute of Scientific and Technical Information of China (English)

    郭莉

    2014-01-01

    In this paper, we analyzed the current legislative status and existing issues of enterprise logistics transportation in China and then proposed the corresponding countermeasures.%从我国企业物流运输立法的现状入手,分析了企业物流运输中常见的逾期交付、误交付、货物的毁损灭失等法律问题,并从加强宣传、完善相关法律、建立统一的管理体制和监管模式等方面提出了应对措施。

  14. A two stage launch vehicle for use as an advanced space transportation system for logistics support of the space station

    Science.gov (United States)

    1987-01-01

    This report describes the preliminary design specifications for an Advanced Space Transportation System consisting of a fully reusable flyback booster, an intermediate-orbit cargo vehicle, and a shuttle-type orbiter with an enlarged cargo bay. It provides a comprehensive overview of mission profile, aerodynamics, structural design, and cost analyses. These areas are related to the overall feasibility and usefullness of the proposed system.

  15. The possibility to use `energy plus transmutation' set-up for neutron production and transport benchmark studies

    Indian Academy of Sciences (India)

    V Wagner; A Krása; M Majerla; F Křížek; O Svoboda; A Kugler; J Adam; V M Tsoupko-Sitnikov; M I Krivopustov; I V Zhuk; W Westmeier

    2007-02-01

    The set-up `energy plus transmutation', consisting of a thick lead target and a natural uranium blanket, was irradiated by relativistic proton beams with the energy from 0.7 GeV up to 2 GeV. Neutron field was measured in different places of this set-up using different activation detectors. The possibilities of using the obtained data for benchmark studies are analyzed in this paper. Uncertainties of experimental data are shown and discussed. The experimental data are compared with results of simulation with MCNPX code.

  16. Global production chains in the fast fashion sector, transports and logistics: the case of the Spanish retailer Inditex

    Directory of Open Access Journals (Sweden)

    Ana Isabel Escalona Orcao

    2014-01-01

    Full Text Available El análisis geográfico de las cadenas globales de producción en diferentes sectores económicos ha prestado poca atención a los sistemas logísticos y de transporte que permiten la integración espacial completa de dichas cadenas. Este artículo sobre Inditex, empresa líder en el sector de la moda rápida, sale al paso de dicha carencia, analizando cómo el encaje del transporte y la logística en sus redes de producción otorgan a dicha compañía una de sus principales ventajas competitivas. El texto describe la red de tiendas y fábricas, presenta los principios del modelo logístico y ofrece algunos detalles sobre los procedimientos aplicados para lograr la integración geográfica y funcional de la cadena de producción de Zara, la más conocida de las once marcas de la compañía. Entre otros aspectos, se resalta el creciente uso del transporte aéreo en las cadenas de suministro de productos con alto contenido en moda fabricados en países distantes, así como en la distribución de prendas a los mercados más alejados. También queda patente la importancia de la variable tiempo en la configuración geográfica de las redes globales de este sector rápida. Por ello el artículo concluye señalando la necesidad de prestar una mayor atención a las estrategias organizativas y logísticas que adoptan las em - presas para mantener y aumentar su competitividad global en este ámbito.

  17. OECD/NEA burnup credit criticality benchmarks phase IIIB: Burnup calculations of BWR fuel assemblies for storage and transport

    International Nuclear Information System (INIS)

    The report describes the final results of the Phase IIIB Benchmark conducted by the Expert Group on Burnup Credit Criticality Safety under the auspices of the Nuclear Energy Agency (NEA) of the Organization for Economic Cooperation and Development (OECD). The Benchmark was intended to compare the predictability of current computer code and data library combinations for the atomic number densities of an irradiated PWR fuel assembly model. The fuel assembly was irradiated under specific power of 25.6 MW/tHM up to 40 GWd/tHM and cooled for five years. The void fraction was assumed to be uniform throughout the channel box and constant, at 0, 40 and 70%, during burnup. In total, 16 results were submitted from 13 institutes of 7 countries. The calculated atomic number densities of 12 actinides and 20 fission product nuclides were found to be for the most part within a range of ±10% relative to the average, although some results, esp. 155Eu and gadolinium isotopes, exceeded the band, which will require further investigation. Pin-wise burnup results agreed well among the participants. The results in the infinite neutron multiplication factor k∞ also accorded well with each other for void fractions of 0 and 40%; however some results deviated from the averaged value noticeably for the void fraction of 70%. (author)

  18. OECD/NEA burnup credit criticality benchmarks phase IIIB. Burnup calculations of BWR fuel assemblies for storage and transport

    Energy Technology Data Exchange (ETDEWEB)

    Okuno, Hiroshi; Naito, Yoshitaka; Suyama, Kenya [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    2002-02-01

    The report describes the final results of the Phase IIIB Benchmark conducted by the Expert Group on Burnup Credit Criticality Safety under the auspices of the Nuclear Energy Agency (NEA) of the Organization for Economic Cooperation and Development (OECD). The Benchmark was intended to compare the predictability of current computer code and data library combinations for the atomic number densities of an irradiated PWR fuel assembly model. The fuel assembly was irradiated under specific power of 25.6 MW/tHM up to 40 GWd/tHM and cooled for five years. The void fraction was assumed to be uniform throughout the channel box and constant, at 0, 40 and 70%, during burnup. In total, 16 results were submitted from 13 institutes of 7 countries. The calculated atomic number densities of 12 actinides and 20 fission product nuclides were found to be for the most part within a range of {+-}10% relative to the average, although some results, esp. {sup 155}Eu and gadolinium isotopes, exceeded the band, which will require further investigation. Pin-wise burnup results agreed well among the participants. The results in the infinite neutron multiplication factor k{sub {infinity}} also accorded well with each other for void fractions of 0 and 40%; however some results deviated from the averaged value noticeably for the void fraction of 70%. (author)

  19. The cost of transport. Biomass logistics, an important cost factor of biogas plants; Wie teuer ist der Transport? Die Biomasse-Logistik ist ein bedeutender Kostenfaktor beim Betrieb von Biogasanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Toews, Thore [Fachhochschule Bingen (Germany)

    2010-02-15

    Biogas plants require large volumes of fermentation substrates for electric power generation. Per kWh of electricity, either 2.3 kg of corn silage or 25 kg of liquid manure are required. Assuming 3,000 kWh/a of electricity consumed by a family of four, this means a total transport volume of 12 t/a or 33 kg/d. This example shows how the profitability of biogas electricity is influenced to a large degree by the logistics factor. (orig.)

  20. LOGISTICS MANAGEMENT: A PREFACE

    Directory of Open Access Journals (Sweden)

    Kartikey Koti

    2014-07-01

    Full Text Available The logistics industry in India is evolving rapidly and it is the interplay of infrastructure, technology and new types of service providers that will define whether the industry is able to help its customers reduce their logistics costs and provide effective services (which are also growing. Changing government policies on taxation and regulation of service providers are going to play an important role in this process. Coordination across various government agencies requires approval from multiple ministries and is a road block for multi modal transport in India. At the firm level, the logistics focus is moving towards reducing cycle times in order to add value to their customers. Consequently, better tools and strategies are being sought by firms in order to enhance their decision making. In this paper, we provide a perspective on these issues, outline some of the key challenges with the help of secondary information, and describe some interesting initiatives that some firms & industries are taking to compete through excellence in managing their logistics.

  1. Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs

    Science.gov (United States)

    McKenzie, J.M.; Voss, C.I.; Siegel, D.I.

    2007-01-01

    In northern peatlands, subsurface ice formation is an important process that can control heat transport, groundwater flow, and biological activity. Temperature was measured over one and a half years in a vertical profile in the Red Lake Bog, Minnesota. To successfully simulate the transport of heat within the peat profile, the U.S. Geological Survey's SUTRA computer code was modified. The modified code simulates fully saturated, coupled porewater-energy transport, with freezing and melting porewater, and includes proportional heat capacity and thermal conductivity of water and ice, decreasing matrix permeability due to ice formation, and latent heat. The model is verified by correctly simulating the Lunardini analytical solution for ice formation in a porous medium with a mixed ice-water zone. The modified SUTRA model correctly simulates the temperature and ice distributions in the peat bog. Two possible benchmark problems for groundwater and energy transport with ice formation and melting are proposed that may be used by other researchers for code comparison. ?? 2006 Elsevier Ltd. All rights reserved.

  2. 我国农产品冷链物流运输模式问题与对策%Main Issues and Countermeasures on Mode of Transport Organization of the Agricultural Cold Logistics in China

    Institute of Scientific and Technical Information of China (English)

    王嵬

    2011-01-01

    This paper compares the agricultural cold logistics in China and developed countries. Analyzed the main issues of the impact of cold chain logistics development. Proposed changes in the cold chain logistics from the mode of transport organization, strengthening the cold chain logistics enterprises, improving the cold chain logistics technology, strengthening the cold chain logistics industry guide and policy support. In this way, improve the efficiency of cold chain logistics.%文章通过比较我国与发达国家农产品冷链物流的差距,分析了影响我国冷链物流发展的主要问题.提出从改变冷链物流企业运输组织模式、加强冷链物流企业合作、提高冷链物流技术以及加强冷链物流行业引导和政策扶持等方面来提高我国冷链物流运输的效率.

  3. NEACRP intercomparison of codes for the shielding assessment of transport packages. Calculation of the response function of the Helium-3 detector used in the TN-12 benchmark measurements

    International Nuclear Information System (INIS)

    The Reactor Physics Committee of the Nuclear Energy Agency has set up a series of benchmark calculations to compare the performance of the various codes used in shielding calculations for fuel transport flasks. For one benchmark the calculations are to be compared with dose-rates measured outside a French TN-12 flask loaded with 12 irradiated fuel elements from a PWR. Neutron dose-rate measurements were made with a Helium-3 detector encased in paraffin with an unknown response. It did not produce measurements of equivalent dose-rates therefore standard flux to dose conversion factors could not be used in the calculations. A 1-dimensional adjoint calculation was carried out by the CEA at Saclay to determine the response function for the detector and this was used to calculate neutron dose-rates for the flask. However the dose-rates calculated away from the surface of the flask were underestimated suggesting that there was an angular dependence of the response. This report describes MCBEND calculations which have been performed to produce an angular response function for the detector, which was used to provide revised dose-rates. (author)

  4. NEACRP intercomparison of codes for the shielding assessment of transport packages. Calculation of the response function of the Helium-3 detector used in the TN-12 benchmark measurements

    Energy Technology Data Exchange (ETDEWEB)

    Locke, H.F.

    1991-11-01

    The Reactor Physics Committee of the Nuclear Energy Agency has set up a series of benchmark calculations to compare the performance of the various codes used in shielding calculations for fuel transport flasks. For one benchmark the calculations are to be compared with dose-rates measured outside a French TN-12 flask loaded with 12 irradiated fuel elements from a PWR. Neutron dose-rate measurements were made with a Helium-3 detector encased in paraffin with an unknown response. It did not produce measurements of equivalent dose-rates therefore standard flux to dose conversion factors could not be used in the calculations. A 1-dimensional adjoint calculation was carried out by the CEA at Saclay to determine the response function for the detector and this was used to calculate neutron dose-rates for the flask. However the dose-rates calculated away from the surface of the flask were underestimated suggesting that there was an angular dependence of the response. This report describes MCBEND calculations which have been performed to produce an angular response function for the detector, which was used to provide revised dose-rates. (author).

  5. Benchmark exercise

    International Nuclear Information System (INIS)

    The motivation to conduct this benchmark exercise, a summary of the results, and a discussion of and conclusions from the intercomparison are given in Section 5.2. This section contains further details of the results of the calculations and intercomparisons, illustrated by tables and figures, but avoiding repetition of Section 5.2 as far as possible. (author)

  6. Feasibility Analysis of State-Owned Transportation Enterprises' Engaging in Modern Logistics%国有交通运输企业发展现代物流的可行性分析

    Institute of Scientific and Technical Information of China (English)

    罗娜; 董沛武

    2012-01-01

    交通运输业作为现代物流产业的重要组成部分,是贯穿供应链全程的重要因素。现代物流具有现代化、系统化、网络化的特性。当前,我国物流产业规模迅速扩大,物流产业集中度提高,社会物流总费用持续增加。国有交通运输企业应采取积极的应对策略,打造具有国际竞争力的"中国物流企业旗舰"。其策略是:构建专业化的物流业务体系,把发展国有综合物流企业放在首位;进行国有物流资产调整,优化物流行业的产业结构;推进企业间的战略联盟,整合并购国际物流资源。%Transportation industry,an important component of modern logistics,is the key factor throughout the whole supply chain.Modern logistics is of modern,systemized and networked features.The scale of the logistics industry in China now is rapidly enlarging with increasing concentration ratio and total cost.State-owned transportation enterprises should take proactive responding strategies to build Chinese logistics flagship enterprises of world-wide competitiveness.The strategies are proposed including constructing specialist logistics business systems,taking priority to develop state-owned comprehensive logistics enterprises;carrying out state-owned logistics asset adjustment,optimizing the industrial structure;facilitating strategic alliances among enterprises,integrating and mergering international logistics resources.

  7. Measuring Regulatory Restrictions in Logistics Services

    OpenAIRE

    Hollweg, Claire; Marn-Heong WONG

    2009-01-01

    This study measures the extent of restrictions on trade in logistics services in the ASEAN+6 economies by constructing a logistics regulatory restrictiveness index for each economy that quantifies the extent of government regulations faced by logistics service providers. This is the first study of its kind to construct a regulatory index of the entire logistics sector, which includes the main modes of international transport and customs restrictions. The indices show that large differences ex...

  8. Waste acceptance and logistics

    International Nuclear Information System (INIS)

    There are three major components which are normally highlighted when the Civilian Radioactive Waste Management Program is discussed - the repository, the monitored retrievable storage facility, and the transportation system. These are clearly the major physical system elements and they receive the greatest external attention. However, there will not be a successful, operative waste management system without fully operational waste acceptance plans and logistics arrangements. This paper will discuss the importance of developing, on a parallel basis to the normally considered waste management system elements, the waste acceptance and logistics arrangements to enable the timely transfer of spent nuclear fuel from more than one hundred and twenty waste generators to the Federal government. The paper will also describe the specific activities the Program has underway to make the necessary arrangements. (author)

  9. Embalagens retornáveis para transporte de bens manufaturados: um estudo de caso em logística reversa Returnable packaging for transportation of manufactured goods: a case study in reverse logistics

    Directory of Open Access Journals (Sweden)

    Diogo Adlmaier

    2007-08-01

    Full Text Available Este artigo descreve um estudo de caso em logística reversa sobre embalagens retornáveis adequadas para transporte internacional de peças para motores a diesel. O estudo diz respeito a cabeçotes exportados do Brasil para os Estados Unidos da América, por via marítima. Inicia-se por uma revisão em logística reversa. A seguir descreve-se o caso, com base em informações colhidas pelos pesquisadores junto à empresa. Descrevem-se os fatos, investigam-se as causas que os originaram e compara-se o processo original de exportação, com embalagens descartáveis, com o novo processo, com embalagens retornáveis, que opera um canal de distribuição reverso. Avaliaram-se os ganhos financeiros, logísticos e ambientais do projeto, de forma a relacionar criticamente a teoria com a prática.This paper describes a case study in reverse logistics, dealing with returnable packaging, suitable for international transportation of parts required by diesel engines assembly operations. The study refers to cylinder heads, exported from Brazil to USA, by sea. The paper begins by revisiting issues in reverse logistics. Then describes the case, supported by information gathered by researchers with technical personnel from the firm. Beyond the pure facts, the researchers aimed to find out why the firm took such a decision, comparing the exportation process, how it was and how it is now, and the operation of a reverse distribution channel. The text assesses financials, logistics and environmental benefits from the actions, relating critically theory and practice.

  10. Transport of uranium concentrates: low specific activity versus logistic complexity; Transporte de concentrado de uranio: baixa atividade especifica versus complexidade logistica

    Energy Technology Data Exchange (ETDEWEB)

    Dias, Pedro L.S.; Macedo, Eclesio F.; Carvalho, Leonardo B.; Carvalho, Renata R., E-mail: pedroluis@inb.gov.b, E-mail: eclesio@inb.gov.b, E-mail: leonardobernadino@inb.gov.b, E-mail: renatarangel@inb.gov.b [Industrias Nucleares do Brasil S.A., Caetite, BA (Brazil)

    2011-10-26

    This paper describes the case of radioactive material transport, according to pertinent documentation - nuclear material specifically in the form op ammonium diuranate, produced by Industrias Nucleares do Brasil S.A. - from the mine and physic-chemical processing at Caetite, Bahia, to the port of Salvador, state of Bahia, approaching the radiological protection aspects

  11. Grain logistics transportation cost analysis in rural areas based on interpretative structural model%基于解释结构模型的农村地区粮食物流运输成本分析

    Institute of Scientific and Technical Information of China (English)

    刘志彬; 杨春河; 申鹏

    2012-01-01

    In the present grain logistics, especially in rural areas, there exist some problems, such as high logistics cost, excessive channels and slow speed. This paper analyzes the grain transpor- tation situation and the transportation cost, constructs an interpretative structural model and pro- poses the main factors influencing on the grain logistics transportation cost.%目前,粮食物流尤其是农村地区粮食物流存在成本高、渠道过多、速度过慢等问题。基于此,在分析我国粮食运输现状及成本构成的基础上,构建解释结构模型,系统地提出影响粮食物流运输成本的主要因素。

  12. Recent advances in the V and V of the new french cea APOLLO3® neutron transport code. Benchmarks analysis of the flux solvers

    International Nuclear Information System (INIS)

    This paper presents a synthesis of the latest advances in the Verification and Validation (V and V) process of the new French (CEA) deterministic neutron transport code APOLLO3® developed within the framework of a common CEA, AREVA and EDF project. It focuses more precisely on the generic V and V of the main transport flux solvers of the code (namely IDT, Minaret, Pastis, TDT and Minos,) through 1D to 3D international benchmarks (ZPR-1D, Stepanek, C5G7, Takeda). Precise criteria have been defined to assess the quality of each solver by comparison with TRIPOLI4® multigroup Monte-Carlo calculations that have been performed for each configuration. We show that pure transport flux solvers (IDT, Minaret, Pastis and TDT-MOC) based on Sn , Pn and characteristics methods meet the keff target precision criteria (100 pcm) whereas SPn solver (Minos) give satisfactory results within reasonable computation time. The complementary of the APOLLO3® flux solvers set is globally highlighted. (author)

  13. Logistics Management Information System

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The logistics information is the logistics manageme nt 's inevitable request. The paper introduces several kinds of logistics informat ion system and their functions in the logistics management, such as the warehous e management system (WMS) in the delivery center, the control system for transpo rtation and delivery, the supply chain management (SCM), the optimization of th e logistics system, etc. In the author's opinion, the development of logistics could been divided into four phases. And the logistic...

  14. Technical Progress and New Logistics Technologies

    OpenAIRE

    Abel, I.; Szekely, I.

    1989-01-01

    The objective of this paper is to study new developments in logistics technologies as a prerequisite and as a consequence of technical progress in the case of the United States. Logistics is used here to denote all systematic actions aimed at bringing materials form primary producers through all intermediate steps to the end user, i.e. logistics includes transportation, handling, storage, as well as all related information processing. The rapid growth of transport and communication outpu...

  15. Benchmarking the Solution Accuracy of 3-Dimensional Transport Codes and Methods Over a Range in Parameter Space

    International Nuclear Information System (INIS)

    Under the auspices of the NEA Nuclear Science Committee (NSC), the Working Party on Scientific Issues of Reactor Systems (WPRS) has been established to study the reactor physics, fuel performance, radiation transport and shielding, and the uncertainties associated with modelling of these phenomena in present and future nuclear power systems. The WPRS has different expert groups to cover a wide range of scientific issues in these fields. The Expert Group on Radiation Transport and Shielding (EGRTS) was created in 2011 to perform specific tasks associated with radiation transport and shielding aspects of present and future nuclear systems and accelerator-based irradiation facilities. The EGRTS provides expert advice to the WPRS and the nuclear/accelerator communities on the development needs (data and methods, models and codes, validation experiments) for various nuclear and accelerator systems and scenarios and also provides specific technical information regarding : - 3D radiation transport codes and methods; - Pressure vessel surveillance; - Shielding and dosimetry aspects of accelerator, target and irradiation facilities; - Neutron activation and shielding. This report aims to compare the results of advanced three-dimensional transport methods and codes to high quality reference solutions

  16. Mobile Robots for Hospital Logistics

    DEFF Research Database (Denmark)

    Özkil, Ali Gürcan

    services to maintain the quality of healthcare provided. Logistics is the most resource demanding service in a hospital. The scale of the transportation tasks is huge and the material flow in a hospital is comparable to that of a factory. We believe that these transportation tasks, to a great extent, can...... be and will be automated using mobile robots. This talk consequently addresses the key technical issues of implementing service robots in hospitals. In simple terms, a robotic system for automating hospital logistics has to be reliable, adaptable and scalable. Robots have to be semi-autonomous, and...... a redundant layer for localization. The system features automatic annotation, which significantly reduces manual work and offer many advantages beyond robotics. A case study on logistics solutions is finally presented. A robotic solution is tested in a hospital to handle the transportation of blood...

  17. Analysis of Operational Efficiency of Listed Logistics Enterprises in Transportation Sector%运输物流上市公司经营效率分析

    Institute of Scientific and Technical Information of China (English)

    姜瑶; 金中坤

    2016-01-01

    In this paper, using the DEA BBC model and the Malmquist productivity index, we evaluated the operational efficiency of 19 listed logistics enterprises in the transportation sector from 2010 to 2014, reaching the conclusion that the overall operational performance of these enterprises was not satisfactory, only three companies were DEA effective throughout the period and that the average growth rate of the total factor productivity of them was a negative 1.1%, the major cause of which was technical degradation.%运用DEA方法中的BCC模型和Malmquist生产率指数对19家运输物流上市公司2010-2014年的经营效率进行评价。结果表明,我国运输物流上市公司整体绩效不佳,2010-2014年间只有3家公司在5年都达到了DEA有效;从全要素生产率角度看,我国运输物流上市公司全要素生产率的平均增长率为-1.1%,技术退步是引起全要素生产率负增长的主要原因。

  18. Application of integer programming on logistics solution for load transportation: the solver tool and its limitations in the search for the optimal solution

    Directory of Open Access Journals (Sweden)

    Ricardo França Santos

    2012-01-01

    Full Text Available This work tries to solve a typical logistics problem of Navy of Brazil regards the allocation, transportation and distribution of genera refrigerated for Military Organizations within Grande Rio (RJ. After a brief review of literature on Linear/Integer Programming and some of their applications, we proposed the use of Integer Programming, using the Excel’s Solver as a tool for obtaining the optimal load configuration for the fleet, obtaining the lower distribution costs in order to meet the demand schedule. The assumptions were met in a first attempt with a single spreadsheet, but it could not find a convergent solution, without degeneration problems and with a reasonable solution time. A second solution was proposed separating the problem into three phases, which allowed us to highlight the potential and limitations of the Solver tool. This study showed the importance of formulating a realistic model and of a detailed critical analysis, which could be seen through the lack of convergence of the first solution and the success achieved by the second one.

  19. NASA astronaut dosimetry: Implementation of scalable human phantoms and benchmark comparisons of deterministic versus Monte Carlo radiation transport

    Science.gov (United States)

    Bahadori, Amir Alexander

    Astronauts are exposed to a unique radiation environment in space. United States terrestrial radiation worker limits, derived from guidelines produced by scientific panels, do not apply to astronauts. Limits for astronauts have changed throughout the Space Age, eventually reaching the current National Aeronautics and Space Administration limit of 3% risk of exposure induced death, with an administrative stipulation that the risk be assured to the upper 95% confidence limit. Much effort has been spent on reducing the uncertainty associated with evaluating astronaut risk for radiogenic cancer mortality, while tools that affect the accuracy of the calculations have largely remained unchanged. In the present study, the impacts of using more realistic computational phantoms with size variability to represent astronauts with simplified deterministic radiation transport were evaluated. Next, the impacts of microgravity-induced body changes on space radiation dosimetry using the same transport method were investigated. Finally, dosimetry and risk calculations resulting from Monte Carlo radiation transport were compared with results obtained using simplified deterministic radiation transport. The results of the present study indicated that the use of phantoms that more accurately represent human anatomy can substantially improve space radiation dose estimates, most notably for exposures from solar particle events under light shielding conditions. Microgravity-induced changes were less important, but results showed that flexible phantoms could assist in optimizing astronaut body position for reducing exposures during solar particle events. Finally, little overall differences in risk calculations using simplified deterministic radiation transport and 3D Monte Carlo radiation transport were found; however, for the galactic cosmic ray ion spectra, compensating errors were observed for the constituent ions, thus exhibiting the need to perform evaluations on a particle

  20. A logistics professional

    International Nuclear Information System (INIS)

    Finland's oil, chemicals, and energy company, Neste, has achieved an enviable standard of logistics serving the markets around the Baltic Rim. Neste's safe and efficient transportation services are handled by its own fleet of tankers, time-chartered vessels, contract road tankers, and rail. Neste's terminals play an important part in the company's logistics network. The company operates four terminals of its own in Finland, and works with other oil companies at three of their terminals. Neste's own terminals are located at the company's refineries at Porvoo and Naantali, and at Kokkola and Kemi on the Gulf of Bothnia. Outside Finland the completion of a new terminal at Riga in Latvia, to enhance the logistics services provided to Neste's network of service stations and direct sales customers in the Baltic countries. This joins a terminal at Muuga near Tallinn in Estonia, which has been operational for some five years. Construction work began on a terminal in St. Petersburg in December 1997 to serve customers in the St. Petersburg and Vyborg areas. Completion is scheduled for autumn 1999

  1. LOGISTIC MANAGEMENT MATERIALS-TECHNICAL SUPPORT RAILWAY ENTERPRISES

    OpenAIRE

    Dykan, V.; Borozenetc, T.

    2014-01-01

    The essence of logistics management. Determine the feasibility of applying the principles of logistics management in organizing the logistics of railway transport. Discussed measures to develop suppliers in the implementation of logistics management logistics. Identified the need to develop and implement regulatory and methodical system to improve materials-technical support through the introduction of modern logistics principles. Applied systemic campaign to organize the materials-technical ...

  2. High-resolution monitoring of bedload transport rates: a benchmark of two approaches (accelerometers and image processing)

    Science.gov (United States)

    Dhont, Blaise; Rousseau, Gauthier; Ancey, Christophe

    2016-04-01

    Experimental and field studies have shown how intermittent bedload transport can be at low flow rates. The development and validation of bedload-transport equations require high-resolution records over long periods of time. Two technologies are considered in the present investigation: image processing and accelerometers mounted on impact plates. The former has been successfully applied to monitor bedload transport in many flume experiments, and the latter has shown encouraging results at different field sites. Calibration is a major issue in both cases, and it is often difficult to assess the precision of the data collected. In our talk, we show how to calibrate and compare the performances of accelerometer and image-processing based techniques in laboratory conditions. The accelerometer is fixed on a perforated steel plate, which is placed vertically at the lower end of the flume. The vibrations due to the particles impacting the plate are recorded with a sampling frequency of 10 kHz. The proxy for bedload transport rate is chosen as the number of peaks above a fixed threshold of the recorded signal. Note that impact plates are usually set in flush with the bed, and to our knowledge, the vertical configuration presented here has not yet been documented. The experimental setup for image processing involves a video-camera that takes top-view images of the particles moving over a white board mounted at the outlet of the flume. Data storage poses an issue, which can be got round by pre-processing the images in real time. The bedload transport rate is estimated based on the number of particles that are identified on the images. The two technologies have the advantages of being cost-effective and demanding limited effort for implementation. They provide high-resolution bedload transport rates over several hours. Estimates of bedload discharge were found to be robust and accurate for low sediment transport rates. At higher rates, the sensors may saturate due the arrival

  3. Groundwater risk assessment for a Polycyclic Aromatic Hydrocarbons (PAH) contaminated site ; benchmarking and validation of numerical transport models

    OpenAIRE

    Rollin, Claire; Baroudi, Hafid; Ben Slimane, Férid

    2001-01-01

    The objective is to test the modelling approaches and the reliability of the codes used in water risk assessment. The final goal is to elaborate, for each group of pollutant, guidelines that could serve as a scientific support for pollutant transport modelling in groundwater and soil. The models performed by 5 teams to simulate a contamination of soils and groundwaters by PAH at a disused coke plant site were compared. Hydrogeology is characterised by a superficial and a chalk aquifer, the la...

  4. A New Advanced Logistics Supply Chain for Food Management Based on Green Logistics Theory

    Directory of Open Access Journals (Sweden)

    Lanqing Liu

    2013-10-01

    Full Text Available The study aims to investigate the advanced logistics supply chain for food management using green logistics. To protect the food logistics environment and prevent the environmental pollution, it is crucial to establish powerful modern supply chains to support the food management in transportation. The construction speed of the food companies is very fast; however, the food supply lags behind the food companies. As a result, the environmental pollution caused in the food logistics becomes severe. To improve this situation, a new logistics supply chain for food management using the environmental logistics theory is proposed in this study. The design and analysis of the proposed food supply chain system has been introduced. By the use of advanced environmental logistics theory, the food supply can be operated in an effective and green manner. Hence, the proposed new logistics supply chain can reduce the environmental pollution of the food logistics and improve the food market environment.

  5. A New Advanced Logistics Supply Chain for Food Management Based on Green Logistics Theory

    OpenAIRE

    Lanqing Liu

    2013-01-01

    The study aims to investigate the advanced logistics supply chain for food management using green logistics. To protect the food logistics environment and prevent the environmental pollution, it is crucial to establish powerful modern supply chains to support the food management in transportation. The construction speed of the food companies is very fast; however, the food supply lags behind the food companies. As a result, the environmental pollution caused in the food logistics becomes seve...

  6. International Production and Global Logistics Operations : Management Issues in Global Logistics with Offshored Production Systems

    OpenAIRE

    Korrmann, Franziska

    2011-01-01

    This paper is directed at discussing some of the management issues, problems and solutions of logistics in the context of offshored productive activities The introduction includes a discussion of the logistics topics and an introduction of the economic logic of offshoring. The main part analyses the logistics topics with regard to the internationally fragmented production. The topics of logistics include: Information flow and integration, transportation, inventory management, warehousing and ...

  7. Green Logistics: the Carbon Agenda

    Directory of Open Access Journals (Sweden)

    2010-09-01

    Full Text Available Over the next few decades European companies will come under intense pressure to cut their greenhouse gas (GHG emissions in an effort to achieve very ambitious carbon reduction targets at national, EU and global levels by 2050. This paper presents a framework for the decarbonisation of their logistical activities based on five key freight transport parameters: freight transport intensity, modal split, vehicle utilization, energy efficiency and the carbon intensity of the energy used in logistics. It examines the potential to cut GHG emissions by altering each of these parameters. Consideration is also given to the decarbonisation of warehousing operations. It is concluded that many of the GHG-reduction measures will also yield financial benefit. The decarbonisation of other sectors of the economy may, however, generate greater demand for logistics services.

  8. Logistic effectiveness evaluation

    Directory of Open Access Journals (Sweden)

    Юлія Олександрівна Крюкова

    2015-01-01

    Full Text Available The article is devoted to the problems of measuring and evaluating the performance of logistics in different countries of the world. The elements and factors influencing the efficiency of logistic operations were considered on the example of Logistics Performance Index (LPI. The indicator of logistic effectiveness in Ukraine is analyzed compared to other countries in 2010-2014

  9. Radiation Detection Computational Benchmark Scenarios

    Energy Technology Data Exchange (ETDEWEB)

    Shaver, Mark W.; Casella, Andrew M.; Wittman, Richard S.; McDonald, Ben S.

    2013-09-24

    Modeling forms an important component of radiation detection development, allowing for testing of new detector designs, evaluation of existing equipment against a wide variety of potential threat sources, and assessing operation performance of radiation detection systems. This can, however, result in large and complex scenarios which are time consuming to model. A variety of approaches to radiation transport modeling exist with complementary strengths and weaknesses for different problems. This variety of approaches, and the development of promising new tools (such as ORNL’s ADVANTG) which combine benefits of multiple approaches, illustrates the need for a means of evaluating or comparing different techniques for radiation detection problems. This report presents a set of 9 benchmark problems for comparing different types of radiation transport calculations, identifying appropriate tools for classes of problems, and testing and guiding the development of new methods. The benchmarks were drawn primarily from existing or previous calculations with a preference for scenarios which include experimental data, or otherwise have results with a high level of confidence, are non-sensitive, and represent problem sets of interest to NA-22. From a technical perspective, the benchmarks were chosen to span a range of difficulty and to include gamma transport, neutron transport, or both and represent different important physical processes and a range of sensitivity to angular or energy fidelity. Following benchmark identification, existing information about geometry, measurements, and previous calculations were assembled. Monte Carlo results (MCNP decks) were reviewed or created and re-run in order to attain accurate computational times and to verify agreement with experimental data, when present. Benchmark information was then conveyed to ORNL in order to guide testing and development of hybrid calculations. The results of those ADVANTG calculations were then sent to PNNL for

  10. Location and logistics

    OpenAIRE

    Alumura, Sibel A.; Karab, Bahar Y.; Melo, M. Teresa

    2013-01-01

    Facility location decisions play a critical role in designing logistics networks. This article provides some guidelines on how location decisions and logistics functions can be integrated into a single mathematical model to optimize the configuration of a logistics network. This will be illustrated by two generic models, one supporting the design of a forward logistics network and the other addressing the specific requirements of a reverse logistics network. Several special cases and extensio...

  11. Logistics Systems from the Regional Perspective

    OpenAIRE

    Enno Lend

    2006-01-01

    Regional development depends on the complex approach to the business environment, where the logistics system can either promote or restrict the economic development at the same time. Logistics and transport system can simultaneously be a promotional factor of the innovation in the regions and it can be itself the subject to technological and process innovation as well. The logistics system of the islands in Western Estonia is an integral business environment re-integrating institutions with p...

  12. Reverse Logistics Network Structures and Design

    OpenAIRE

    Fleischmann, Moritz

    2001-01-01

    textabstractLogistics network design is commonly recognized as a strategic supply chain issue of prime importance. The location of production facilities, storage concepts, and transportation strategies are major determinants of supply chain performance. This chapter considers logistics network design for the particular case of closed-loop supply chains. We highlight key issues that companies are facing when deciding upon the logistics implementation of a product recovery initiative. In partic...

  13. Integrated Computer System of Management in Logistics

    Science.gov (United States)

    Chwesiuk, Krzysztof

    2011-06-01

    This paper aims at presenting a concept of an integrated computer system of management in logistics, particularly in supply and distribution chains. Consequently, the paper includes the basic idea of the concept of computer-based management in logistics and components of the system, such as CAM and CIM systems in production processes, and management systems for storage, materials flow, and for managing transport, forwarding and logistics companies. The platform which integrates computer-aided management systems is that of electronic data interchange.

  14. EVALUATING LOGISTICAL CHAIN IN SLOVENIAN COMPANIES

    OpenAIRE

    Bruno Zavrsnik

    2013-01-01

    The current market situation, followed by fast growing globalization‘s effects has been constantly searching for new approaches in modeling and managing transport -logistics chains. These are approaches where all determinants for efficient and effect ive management of ever complex supply chains have been properly set and exploited. This paper focuses on logistics performance of industrial firms in the Slovenian market. Our research explored the current attitudes of managers in the logistic in...

  15. Reverse Logistics Network Structures and Design

    OpenAIRE

    2001-01-01

    Logistics network design is commonly recognized as a strategic supply chain issue of prime importance. The location of production facilities, storage concepts, and transportation strategies are major determinants of supply chain performance. This chapter considers logistics network design for the particular case of closed-loop supply chains. We highlight key issues that companies are facing when deciding upon the logistics implementation of a product recovery initiative. In particular, we poi...

  16. HYDROCOIN [hydrologic code intercomparison] Level 1: Benchmarking and verification test results with CFEST [Coupled Fluid, Energy, and Solute Transport] code

    International Nuclear Information System (INIS)

    The US Department of Energy (DOE) participated in the international hydrologic code intercomparison (HYDROCOIN) project organized by the Swedish Nuclear Power Inspectorate for the purpose of improving our knowledge about the influence of various strategies for ground-water flow modeling for the safety assessment of final repositories for nuclear waste. The HYDROCOIN project consisted of three levels of effort: (1) Level 1 was concerned with verifying the numerical accuracy of the code, (2) Level 2 was involved with validation of models using field experiments, and (3) Level 3 was concerned with sensitivity and uncertainty analysis. In the HYDROCOIN Level 1 effort, seven cases were defined. The definition of each case included the input parameters, governing equations, output specifications, and format. The Coupled Fluid, Energy, and Solute Transport (CFEST) code was applied to solve Cases 1, 2, 4, 5, and 7; the Finite-Element Three-Dimensional Ground-Water (FE3DGW) Flow Model was used to solve Case 6. Case 3 was ignored because unsaturated flow was not pertinent to the Salt Repository Project. This report presents the Level 1 results furnished by the project teams. The numerical accuracy of the codes is determined by: (1) comparing the computational results with analytical solutions for cases that have analytical solutions (Cases 1 and 4), and (2) intercomparing results from codes for cases that do not have analytical solutions (Cases 2, 5, 6, and 7). Cases 1, 2, 6, and 7 relate to flow analyses, whereas Cases 4 and 5 require nonlinear solutions. 7 refs., 71 figs., 10 tabs

  17. Development of logistics information systems

    Directory of Open Access Journals (Sweden)

    Milan Ž. Dronjak

    2012-10-01

    Full Text Available An adequate logistics information system provides real time automated data processing, distribution and of information according to Terrain Commander's requirements, which leads to timely fulfillment of logistic demands of units. SAP ERP The SAP ERP application is the integrated (ERP software capable of working with complex organisational structures, personnel, equipment, and finance. It enables planning and combining forces for every type of operations. The system also enables the determination of the readiness status of modelled forces. ISL The Information System for Logistics (ISL is a comprehensive information system of the Ministry of Defence (MoD and the Army of the Czech Republic that covers many areas: acquisition, supply, ammunition and equipment maintenance, logistics, etc. The ISL provides support for military logistics in all important areas of consumer and acquisition logistics, satisfaying all kinds of Defence Forces needs in the country and abroad. LOGFAS The information system LOGFAS comprises Logistics Database (LOGBASE, Movement and Transportation software (M&T, Allied Command Europe Resource Optimisation Software System (ACROSS and Logistic Reporting System (LOGREP. The Logistics Database LOGBASE represents a logistics information source and also a database related to assets, forces, geography, infrastructure, targets, supplies, movements and medical data. The main software tools which rely on the LOGBASE are M&T, ACROSS and LOGREP. GCSS-Army The original impetus to create the SALE came in the mid-90s when the United States Department of Defense (DoD started a logistics modernisation programme. One of tasks was to build The Single Army Logistics Enterprise (SALE for the purpose of covering the whole organisational structure of the DoD. There are three components of the SALE: GCSS-Army, PLM+ and LMP. Each of them uses the commercial Enterprise Resource Planning SAP Software with a Web access. The main component, GCSS

  18. Logistics management skills development: A Zimbabwean case

    Directory of Open Access Journals (Sweden)

    Jacobus N. Cronjé

    2015-02-01

    Full Text Available Background: Since logistics emerged as an applied discipline during the latter part of the 20th century, there has been an increased need for skills development in logistics and supply chain management. However, literature suggests a general shortage of educated and skilled logistics and supply chain managers worldwide.Objectives: The purpose of this article was to benchmark an in-house training programme in logistics management in the beverage industry of Zimbabwe with international best practice.Method: A case study approach was followed focusing on the programme curriculum, content and delivery. The article reports on the nature and effectiveness of the programme. The curriculum was benchmarked with skills requirements identified in literature. Relevance was evaluated based on participant perceptions over a period of 3 years using questionnaires with both closed- and open-ended questions.Results: Findings suggested that the programme offering is in line with international practice whilst it also addresses particular issues in Third World countries. Participants perceived the programme as being practical and valuable for enhancing their job performance and career development.Conclusion: The article provides a framework for evaluating logistics training programmes. Future research could include an evaluation that measures changes in on-the-job behaviour of participants.

  19. Principles of logistic management of freight forwarding service

    Directory of Open Access Journals (Sweden)

    Dmitriev Alexander Viktorovich

    2013-06-01

    Full Text Available The general questions of logistic management of freight forwarding services are studied. The main logistic processes in transportation systems are revealed. The principal scheme of transport and logistic system of freight delivery is considered. The basics of building an effective system of transport and forwarding services of freight flows are formulated. The relation between the transport and forwarding services and the logistic process of freight delivery associated with a clear sequence of transport operations, which can effectively reduce the total transport cost, is fixed. There has been given a substantiation of organizational paradigm in the logistics of freight forwarding services, according to which, on the basis of the key principles of logistics, such as coordination, coherence, rationality, optimization and accurate calculation, the consistent, orderly and sustained system of delivery of goods to the consumer is created. It is also noted that the current functionality of freight forwarding companies reaches the 3d and 4th levels of logistic providing.

  20. The PRISM Benchmark Suite

    OpenAIRE

    Kwiatkowsa, Marta; Norman, Gethin; Parker, David

    2012-01-01

    We present the PRISM benchmark suite: a collection of probabilistic models and property specifications, designed to facilitate testing, benchmarking and comparisons of probabilistic verification tools and implementations.

  1. Kvantitativ benchmark - Produktionsvirksomheder

    DEFF Research Database (Denmark)

    Sørensen, Ole H.; Andersen, Vibeke

    Rapport med resultatet af kvantitativ benchmark over produktionsvirksomhederne i VIPS projektet.......Rapport med resultatet af kvantitativ benchmark over produktionsvirksomhederne i VIPS projektet....

  2. Benchmarking in Student Affairs.

    Science.gov (United States)

    Mosier, Robert E.; Schwarzmueller, Gary J.

    2002-01-01

    Discusses the use of benchmarking in student affairs, focusing on issues related to student housing. Provides examples of how benchmarking has influenced administrative practice at many institutions. (EV)

  3. Getting logistics closer to end users

    NARCIS (Netherlands)

    Luis, J.G.; Hernández, J.G.; Rodriguez, G.P.; Carcel, G.H.; Hofman, W.

    2014-01-01

    Nowadays, logistics could make you purchase a book in Amazon and delivering it in 24-hours using a service from a logistics operator or a transport company. In a more complex scenario, an order could be traveling around the globe, passing from hand to hand between unknown actors for months. In most

  4. Consumer Perception on Halal meat logistics

    NARCIS (Netherlands)

    Tieman, H.; Ghazali, M.C.; Vorst, van der J.G.A.J.

    2013-01-01

    Purpose – The purpose of this paper is to investigate the preferred minimum level of segregation for halal meat in supermarket, transport, storage and terminals; the responsibility of halal logistics; and the willingness to pay for halal logistics in a Muslim and non-Muslim country. Design/methodolo

  5. Team 16: Logistics Battle Command Model

    OpenAIRE

    Baez, Francisco; Shockley, Jonathan; Sultz, Carston

    2010-01-01

    from Scythe : Proceedings and Bulletin of the International Data Farming Community, Issue 8 Workshop 20 This working group explored the use of the newly developed Logistics Battle Command (LBC) model prototype Graphical User Interface (GUI). Team 16 focused on the development and implementation of a logistics scenario designed to assess the operational impact of different strategies for the management and allocation of transportation assets.

  6. Modeling and Implementation of Wireless Sensor Networks for Logistics Applications

    OpenAIRE

    Son, Vo Que

    2011-01-01

    Logistics has experienced a long time of developments and improvements based on the advanced vehicle technologies, transportation systems, traffic network extension and logistics processes. In the last decades, the complexity has increased significantly and this has created complex logistics networks over multiple continents. Because of the close cooperation, these logistics networks are highly dependent on each other in sharing and processing the logistics information. Every customer has man...

  7. BENCHMARKING FOR THE ROMANIAN HEAVY COMMERCIAL VEHICLES MARKET

    Directory of Open Access Journals (Sweden)

    Pop Nicolae Alexandru

    2014-07-01

    Full Text Available The globalization has led to a better integration of international markets of goods, services and capital markets, fact which leads to a significant increase of investments in those regions with low labor cost and with access to commercial routes. The development of international trade has imposed a continuous growth of the volumes of transported goods and the development of a transport system, able to stand against the new pressure exercised by cost, time and space. The solution to efficient transport is the intermodal transportation relying on state-of-the-art technological platforms, which integrates the advantages specific to each means of transportation: flexibility for road transportation, high capacity for railway, low costs for sea, and speed for air transportation. Romania’s integration in the pan-European transport system alongside with the EU’s enlargement towards the east will change Romania’s positioning into a central one. The integrated governmental program of improving the intermodal infrastructure will ensure fast railway, road and air connections. For the Danube harbors and for the sea ports, EU grants and allowances will be used thus increasing Romania’s importance in its capacity as one of Europe’s logistical hubs. The present paper intends to use benchmarking, the management and strategic marketing tool, in order to realize an evaluation of the Romanian heavy commercial vehicles market, within European context. Benchmarking encourages change in a complex and dynamic context where a permanent solution cannot be found. The different results stimulate the use of benchmarking as a solution to reduce gaps. MAN’s case study shows the dynamics of the players on the Romanian market for heavy commercial vehicles, when considering the strong growth of Romanian exported goods but with a modest internal demand, a limited but developing road infrastructure, and an unfavorable international economical context together with

  8. Research on Collaborative Development Path of E -Commerce Logistics City Distribution and Urban Public Transport System%电商物流同城配送与城市公交系统协同发展路径研究

    Institute of Scientific and Technical Information of China (English)

    李正军; 李青桁

    2015-01-01

    在电子商务环境下,城市公交系统与同城物流配送两者之间可以协同发展。从组织层面、业务流程层面和信息层面等三个方面做好协同设计,建立和完善公共信息平台,提高物流管理一体化水平,有效节约资源,降低物流成本,从而实现电商物流服务水平的整体提升,真正解决城市配送“最后一公里”的问题。%Both of the urban public transport system and city logistics distribution can be collaborative developed in e -business circumstance.We should conscientiously do a good job of collaborative design from three aspects of organization,business processes and information,such as:establishing and perfecting the public information plat-form,improving integration level of logistics management,and reducing logistics cost.Then,the whole service level of the e -commerce logistics can be achieved and the “Last -Mile”issue in city distribution can be solved.

  9. Proceedings of China modern logistics engineering inheritance, wisdom, innovation and cooperation

    CERN Document Server

    2015-01-01

    Proceedings of China Modern Logistics Engineering covers nearly all areas of logistics engineering technology, focusing on the latest findings and the following theoretical aspects: Logistics Systems and Management Research; Green Logistics and Emergency Logistics; Enterprise Logistics; Material Handling; Warehousing Technology Research; Supply Chain Management; Logistics Equipment; Logistics Packaging Technology; Third-party Logistics, etc. The book will help readers to grasp the relevant aspects of the theory involved, research and development trends, while also offering guidance for their work and related studies. It is intended for researchers, scholars and graduate students in logistics management, logistics engineering, transportation, business administration, E-commerce and industrial engineering.

  10. Analysis of VENUS-3 benchmark experiment

    International Nuclear Information System (INIS)

    The paper presents the revision and the analysis of VENUS-3 benchmark experiment performed at CEN/SCK, Mol (Belgium). This benchmark was found to be particularly suitable for validation of current calculation tools like 3-D neutron transport codes, and in particular of the 3D sensitivity and uncertainty analysis code developed within the EFF project. The compilation of the integral experiment was integrated into the SINBAD electronic data base for storing and retrieving information about the shielding experiments for nuclear systems. SINBAD now includes 33 reviewed benchmark descriptions and several compilations waiting for the review, among them many benchmarks relevant for pressure vessel dosimetry system validation.(author)

  11. Logistic distribution management

    OpenAIRE

    Knytlová, Michaela

    2013-01-01

    Diploma work "Logistics distribution management" consists of two main parts: the literature review and a practical part. The literature review mostly contains information about the overall logistics, business logistics and distribution. It also contains the possibilities of using marketing, business management, and macroeconomic data while implementing a strategic business logistic plan of how to enter the new market with the existing range of production. In the literature revi...

  12. PROCESSING REVERSE LOGISTICS INVENTORIES

    OpenAIRE

    Bajor, Ivona; Novačko, Luka; Ogrizović, Dario

    2014-01-01

    Developed logistics systems have organized reverse logistics flows and are continuously analyzing product returns, tending to detect patterns in oscillations of returning products in certain time periods. Inventory management in reverse logistics systems depends on different criteria, regarding goods categories, formed contracts between subjects of supply chains, uncertainty in manufacturer’s quantities of DOA (dead on arrival) products, etc. The developing logistics systems, such as the Croa...

  13. Benchmarking and Performance Measurement.

    Science.gov (United States)

    Town, J. Stephen

    This paper defines benchmarking and its relationship to quality management, describes a project which applied the technique in a library context, and explores the relationship between performance measurement and benchmarking. Numerous benchmarking methods contain similar elements: deciding what to benchmark; identifying partners; gathering…

  14. Total Logistic Plant Solutions

    Directory of Open Access Journals (Sweden)

    Dusan Dorcak

    2016-02-01

    Full Text Available The Total Logistics Plant Solutions, plant logistics system - TLPS, based on the philosophy of advanced control processes enables complex coordination of business processes and flows and the management and scheduling of production in the appropriate production plans and planning periods. Main attributes of TLPS is to create a comprehensive, multi-level, enterprise logistics information system, with a certain degree of intelligence, which accepts the latest science and research results in the field of production technology and logistics. Logistic model of company understands as a system of mutually transforming flows of materials, energy, information, finance, which is realized by chain activities and operations

  15. KSC ISS Logistics Support

    Science.gov (United States)

    Tellado, Joseph

    2014-01-01

    The presentation contains a status of KSC ISS Logistics Operations. It basically presents current top level ISS Logistics tasks being conducted at KSC, current International Partner activities, hardware processing flow focussing on late Stow operations, list of KSC Logistics POC's, and a backup list of Logistics launch site services. This presentation is being given at the annual International Space Station (ISS) Multi-lateral Logistics Maintenance Control Panel meeting to be held in Turin, Italy during the week of May 13-16. The presentatiuon content doesn't contain any potential lessons learned.

  16. New Multi-group Transport Neutronics (PHISICS) Capabilities for RELAP5-3D and its Application to Phase I of the OECD/NEA MHTGR-350 MW Benchmark

    Energy Technology Data Exchange (ETDEWEB)

    Gerhard Strydom; Cristian Rabiti; Andrea Alfonsi

    2012-10-01

    PHISICS is a neutronics code system currently under development at the Idaho National Laboratory (INL). Its goal is to provide state of the art simulation capability to reactor designers. The different modules for PHISICS currently under development are a nodal and semi-structured transport core solver (INSTANT), a depletion module (MRTAU) and a cross section interpolation (MIXER) module. The INSTANT module is the most developed of the mentioned above. Basic functionalities are ready to use, but the code is still in continuous development to extend its capabilities. This paper reports on the effort of coupling the nodal kinetics code package PHISICS (INSTANT/MRTAU/MIXER) to the thermal hydraulics system code RELAP5-3D, to enable full core and system modeling. This will enable the possibility to model coupled (thermal-hydraulics and neutronics) problems with more options for 3D neutron kinetics, compared to the existing diffusion theory neutron kinetics module in RELAP5-3D (NESTLE). In the second part of the paper, an overview of the OECD/NEA MHTGR-350 MW benchmark is given. This benchmark has been approved by the OECD, and is based on the General Atomics 350 MW Modular High Temperature Gas Reactor (MHTGR) design. The benchmark includes coupled neutronics thermal hydraulics exercises that require more capabilities than RELAP5-3D with NESTLE offers. Therefore, the MHTGR benchmark makes extensive use of the new PHISICS/RELAP5-3D coupling capabilities. The paper presents the preliminary results of the three steady state exercises specified in Phase I of the benchmark using PHISICS/RELAP5-3D.

  17. Final report on work for Center for Gyrokinetic Particle Simulation of Turbulent Transport in Burning Plasmas — Tools for Improved Data Logistics

    Energy Technology Data Exchange (ETDEWEB)

    Micah Beck

    2008-09-14

    This project focused on the use of Logistical Networking technology to address the challenges involved in rapid sharing of data from the the Center's gyrokinetic particle simulations, which can be on the order of terabytes per time step, among researchers at a number of geographically distributed locations. There is a great need to manage data on this scale in a flexible manner, with simulation code, file system, database and visualization functions requiring access. The project used distributed data management infrastructure based on Logistical Networking technology to address these issues in a way that maximized interoperability and achieved the levels of performance the required by the Center's application community. The work focused on the development and deployment of software tools and infrastructure for the storage and distribution of terascale datasets generated by simulations running at the National Center for Computational Science at Oak Ridge National Laboratory.

  18. Education in logistics and training of non-logistic personnel

    OpenAIRE

    Marko D. Andrejić; Vladan R. Radosavljević; Slaviša N. Arsić

    2011-01-01

    The significance of education in logistics and education and training of cadets who belong to non-logistic services (non-logistic personnel) will be presented. The logistical aspects of education of non-logistic personnel are elaborated as well as the knowledge in the area of logistics which is necessary to be transferred through the educational process to non-logistic personnel for the successful accomplishment of their functional duties. A general approach and the methods of logistics educa...

  19. Logistics and logistics support in crisis management and citizen protection

    OpenAIRE

    HOLEJŠOVSKÝ, Jan

    2010-01-01

    ABSTRAKT LOGISTICS AND LOGISTICS SUPPORT IN CRISIS MANAGEMENT AND CITIZEN PROTECTION The graduation thesis on topic ``Logistics and logistics support in crisis management and citizen protection" is divided into several chapters, which in summary are a material presenting information about logistics and logistics support in crisis management and citizen protection. This was one of the aims at this work. Chapters I., II., III., IV. describe logistics and logistics support, crisis management, ci...

  20. Logistics Innovation Process Revisited

    DEFF Research Database (Denmark)

    Gammelgaard, Britta; Su, Shong-Iee Ivan; Yang, Su-Lan

    2011-01-01

    Purpose – The purpose of this paper is to learn more about logistics innovation processes and their implications for the focal organization as well as the supply chain, especially suppliers. Design/methodology/approach – The empirical basis of the study is a longitudinal action research project...... that was triggered by the practical needs of new ways of handling material flows of a hospital. This approach made it possible to revisit theory on logistics innovation process. Findings – Apart from the tangible benefits reported to the case hospital, five findings can be extracted from this study: the logistics...... innovation process model may include not just customers but also suppliers; logistics innovation in buyer-supplier relations may serve as an alternative to outsourcing; logistics innovation processes are dynamic and may improve supplier partnerships; logistics innovations in the supply chain are as dependent...

  1. LOGISTICS - EVOLUTION THROUGH INNOVATION

    Directory of Open Access Journals (Sweden)

    Petrache Alexandru Constantin

    2015-07-01

    Full Text Available The current economic conditions, the rapidity with which the exchange of information, resources and products in the market takes place makes the logistics seem appreciably less significant. However, the importance of logistics has been presented in the military field, through strategies that have led to wining of the great wars that mankind has seen, through the supply of troops with food or moving military equipment. The literature in the field of logistics has numerous works on this topic. But while most focuses on efficient ways of carrying out the component activities of logistics or the strategies of organizations with regard to logistics or its functions, research on dynamics of logistics is underdeveloped. To be able to propose new methods or strategies of logistic activities is necessary to understand the development of this concept, determinant factors and economic and social conditions that gave rise to such developments. Thus, after a presentation of the main landmarks of the historical development of logistics we highlight the importance of the innovation within an organization's value chain innovation, in particular, and how to conduct the business in general. Using generations of innovation identified in the literature, we determine the generation of logistics development, taking into account innovation and how to conduct business. In addition for a better highlight of the own vision over the logistics generations identified, we will present the graphical concept for each generation in part. Last but not least, for each generation identified we try to allocate the chronological landmarks featured in order to reinforce the importance played by innovation in the development of the logistics industry and to give future directions of research within this topic. The study took into account the information presented in articles, books and websites of the relevant specialty in logistics and innovation to be able to build and expose a

  2. Packaging for logistical support

    Science.gov (United States)

    Twede, Diana; Hughes, Harold

    Logistical packaging is conducted to furnish protection, utility, and communication for elements of a logistical system. Once the functional requirements of space logistical support packaging have been identified, decision-makers have a reasonable basis on which to compare package alternatives. Flexible packages may be found, for example, to provide adequate protection and superior utility to that of rigid packages requiring greater storage and postuse waste volumes.

  3. LOGISTICS - EVOLUTION THROUGH INNOVATION

    OpenAIRE

    Petrache Alexandru Constantin

    2015-01-01

    The current economic conditions, the rapidity with which the exchange of information, resources and products in the market takes place makes the logistics seem appreciably less significant. However, the importance of logistics has been presented in the military field, through strategies that have led to wining of the great wars that mankind has seen, through the supply of troops with food or moving military equipment. The literature in the field of logistics has numerous works on this topic. ...

  4. Nea Benchmarks

    International Nuclear Information System (INIS)

    The two energy group diffusion equations accuracy is quite good for common/typical transients. However, better solutions should be obtained with more sophisticate techniques, including Monte Carlo and detailed neutron transport or multi-group diffusion equations and multidimensional cross section tables to get more realistic flux distribution. Constitutive models used to determine the evolution of the two-phase mixture, being mostly developed under steady state conditions, should be made more adapted for the simulation of transient situations with main reference to empirical correlations connected with the feedback between thermal-hydraulic and kinetic (e.g. the sub-cooled boiling heat transfer coefficient). 3-D nodalizations for the core or the vessel regions should be qualified based on proper sets of experimental data, as needed for Best Estimate simulation of phenomena like pressure wave propagation and flow redistribution in the core. The importance and the need for uncertainty evaluations for coupled codes predictions should be clear based on a number of reasons discussed in this work. Therefore, uncertainty must be connected with any prediction. The availability of proper computational resources should encourage the modeling of individual assemblies: this appears possible within the neutron kinetics area and may require some effort in thermal-hydraulic area namely when large number of channels constitutes the reactor core. Care is needed when specifying spatial mapping between thermal-hydraulic and kinetic nodes of the core models, especially when asymmetric core behavior is expected or when phenomena affecting a single a limited number of fuel assemblies are important. Finally, the industry and the regulatory bodies should become fully aware about the capabilities and the limitations of the coupled code techniques. Nevertheless, further and continuous assessment studies and investigations should be performed to enhance the degree of the Best Estimate

  5. Karma1.1 benchmark calculations for the numerical benchmark problems and the critical experiments

    International Nuclear Information System (INIS)

    The transport lattice code KARMA 1.1 has been developed at KAERI for the reactor physics analysis of the pressurized water reactor. This program includes the multi-group library processed from ENDF/B-VI R8 and also utilizes the macroscopic cross sections for the benchmark problems. Benchmark calculations were performed for the C5G7 and the KAERI benchmark problems given with seven group cross sections, for various fuels loaded in the operating pressurized water reactors in South Korea, and for the critical experiments including CE, B and W and KRITZ. Benchmark results show that KARMA 1.1 is working reasonably. (author)

  6. Aquatic Life Benchmarks

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Aquatic Life Benchmarks is an EPA-developed set of criteria for freshwater species. These benchmarks are based on toxicity values reviewed by EPA and used in...

  7. Benchmarking biofuels; Biobrandstoffen benchmarken

    Energy Technology Data Exchange (ETDEWEB)

    Croezen, H.; Kampman, B.; Bergsma, G.

    2012-03-15

    A sustainability benchmark for transport biofuels has been developed and used to evaluate the various biofuels currently on the market. For comparison, electric vehicles, hydrogen vehicles and petrol/diesel vehicles were also included. A range of studies as well as growing insight are making it ever clearer that biomass-based transport fuels may have just as big a carbon footprint as fossil fuels like petrol or diesel, or even bigger. At the request of Greenpeace Netherlands, CE Delft has brought together current understanding on the sustainability of fossil fuels, biofuels and electric vehicles, with particular focus on the performance of the respective energy carriers on three sustainability criteria, with the first weighing the heaviest: (1) Greenhouse gas emissions; (2) Land use; and (3) Nutrient consumption [Dutch] Greenpeace Nederland heeft CE Delft gevraagd een duurzaamheidsmeetlat voor biobrandstoffen voor transport te ontwerpen en hierop de verschillende biobrandstoffen te scoren. Voor een vergelijk zijn ook elektrisch rijden, rijden op waterstof en rijden op benzine of diesel opgenomen. Door onderzoek en voortschrijdend inzicht blijkt steeds vaker dat transportbrandstoffen op basis van biomassa soms net zoveel of zelfs meer broeikasgassen veroorzaken dan fossiele brandstoffen als benzine en diesel. CE Delft heeft voor Greenpeace Nederland op een rijtje gezet wat de huidige inzichten zijn over de duurzaamheid van fossiele brandstoffen, biobrandstoffen en elektrisch rijden. Daarbij is gekeken naar de effecten van de brandstoffen op drie duurzaamheidscriteria, waarbij broeikasgasemissies het zwaarst wegen: (1) Broeikasgasemissies; (2) Landgebruik; en (3) Nutriëntengebruik.

  8. Sustainable supplier selection: the effect of logistical collaboration on logistical performance

    Directory of Open Access Journals (Sweden)

    José Geraldo Vidal Vieira

    2015-05-01

    Full Text Available This research assesses the effect of buyer-supplier collaboration on logistical performance by considering sustainable criteria. The paper presents the results of a survey with 124 respondents of the Brazilian organizations to understand the relationship among Third-Party Logistical (3PL, Consumer Packaged Goods (CPG industry and Carriers. The results disclose that elements of logistical collaboration (interpersonal, tactical and strategic exert positive influence in logistical performance (reliability, transport and risk. The interpersonal and strategic collaboration indices positively influence the reliability, which performs the highest-level performance index.

  9. APPLICATION OF CONTROLLING IN LOGISTIC SYSTEMS OF COMPANIES

    OpenAIRE

    Miroshnichenko M. A.; Duplyakina O. K.

    2015-01-01

    In the article methodological and practical basics of development and deployment of controlling in logistic systems are covered. The main objectives and instruments of controlling of logistics in activities of the organization are opened. The example of use of controlling in logistic systems is given. The main task of controlling in logistic systems consists in realization of an operating control behind profitability and the best passing of processes of warehousing and transportation material...

  10. International Trade Logistic Services Competitiveness in the Pacific Basin

    OpenAIRE

    América Ivonne Zamora Torres; Vivien Sierens

    2014-01-01

    The development of efficient logistics plays a crucial role in national trade competitiveness. The present study aims to determine Mexico´s foreign trade logistics competitiveness with respect to the largest economies of the Asia-Pacific Economic Cooperation in 2012. The study considers three key variables: customs, international transport and logistics services. It uses a principal components analysis to compute a foreign trade logistics competitiveness index. The results indicate that the t...

  11. The 5th National Logistics and Supply Chain Conference

    OpenAIRE

    PEKER, İskender

    2016-01-01

    Abstract. The 5thNational Logistics and Supply Chain Conference (ULTZK) held in Mersin Divan Hotel on the 26-28 May 2016. A number of academics, logistics service receiver company representatives (manufacturers, wholesalers, retailers, etc.), logistics service provider company representatives (transport, logistics, storage, etc.), non-governmental organization representatives, and the relevant public institution and organization representatives participated to the conducted panels and session...

  12. Significant Improvements to LOGIST.

    Science.gov (United States)

    Wingersky, Marilyn S.

    The computer program LOGIST (Wingersky, Patrick, and Lord, 1988) estimates the item parameters and the examinee's abilities for Birnbaum's three-parameter logistic item response theory model using Newton's method for solving the joint maximum likelihood equations. In 1989, Martha Stocking discovered a problem with this procedure in that when the…

  13. International Logistics Science Conference

    CERN Document Server

    Hompel, Michael; Meier, J

    2014-01-01

    The importance of logistics in all its variations is still increasing. New technologies emerge, new planning methods and algorithms are developed, only to face a market with a growing complexity and the need of weighting monetary costs against ecological impact. Mastering these challenges requires a scientific viewpoint on logistics, but always with applications in mind. This volume presents up-to-date logistics research in all its diversity and interconnectedness. It grew out of the “International Logistics Science Conference” (ILSC) held in Dortmund in September 2013, bringing together leading scientists and young academics from nine different countries. The conference was jointly organized by the “Efficiency Cluster Logistics” and the “Fraunhofer Institute for Material Flow and Logistics”. The Program Committee used a double blind review process to choose the 12 strongest contributions, which were then grouped in four areas: - Sustainability logistics, including electric mobility, smart inform...

  14. Returnable containers: an example of reverse logistics

    OpenAIRE

    Kroon, Leo; Vrijens, G.M.C.

    1996-01-01

    textabstractConsiders the application of returnable containers as an example of reverse logistics. A returnable container is a type of secondary packaging that can be used several times in the same form, in contrast with traditional cardboard boxes. For this equipment to be used, a system for the return logistics of the containers should be available: this system should guarantee that the containers are transported from the recipients to the next senders, and that they are cleaned and maintai...

  15. Historical Development of Logistics Literature in Turkey

    OpenAIRE

    Zafer Acar; Pınar Gürol

    2013-01-01

    First academic studies in logistics can be seen in mid twentieth century. “TransportationJournal” is the first of its scope, was published in 1961. After that, other journals such as “InternationalJournal of LogisticsManagement, Journal of BusinessLogistics” were published (Gravier and Farris, 2008). At the same period, associations which bring scientists, sector representatives together were established. First academic study goes back to 1850’s, when Henry Adams, who was president of Yale Un...

  16. Logistics and Supply Chain Practices in India

    OpenAIRE

    Samir K. Srivastava

    2006-01-01

    This paper seeks to comprehensively examine and present the state of logistics and supply chain practices in India. We consider the two separately as they have still not integrated seamlessly in the Indian context. Our study is based on both field observations and secondary data. We focus on supply chain collaboration and partnerships, supply chain structure, facilities network design, transportation and logistics and the role of Information and Communications Technologies (ICT). On-site obse...

  17. A shared " passengers & goods " city logistics system

    OpenAIRE

    Trentini, Anna; Masson, Renaud; Lehuédé, Fabien; Malhéné, Nicolas; Péton, Olivier; Tlahig, Houda

    2012-01-01

    Many strategic planning models have been developed to help decision making in city logistics. Such models do not take into account, or very few, the flow of passengers because the considered unit does not have the same nature (a person is active and a good is passive). However, it seems fundamental to gather the goods and the passengers in one model when their respective transports interact with each other. In this context, we suggest assessing a shared passengers & goods city logistics syste...

  18. Benchmarking semantic web technology

    CERN Document Server

    García-Castro, R

    2009-01-01

    This book addresses the problem of benchmarking Semantic Web Technologies; first, from a methodological point of view, proposing a general methodology to follow in benchmarking activities over Semantic Web Technologies and, second, from a practical point of view, presenting two international benchmarking activities that involved benchmarking the interoperability of Semantic Web technologies using RDF(S) as the interchange language in one activity and OWL in the other.The book presents in detail how the different resources needed for these interoperability benchmarking activities were defined:

  19. Logistics in Namibia: Issues and challenges

    Directory of Open Access Journals (Sweden)

    Christopher J. Savage

    2013-05-01

    Full Text Available Logistics is perceived to be important for Namibia’s growth and development, but this may be a matter of conjecture as there is a dearth of documented information about the industry in Namibia. Furthermore, it is uncertain what the understanding of logistics is for key stakeholders in the country. This article reports on a project; the objectives were to address some of these issues and to lay the foundation for a more thorough investigation in the future. The findings of the initial project were disseminated in 2012 by: a conference paper showing the challenges and opportunities facing logistics in Namibia in 2012; a report; and through a Logistics and Transport Workshop held in Walvis Bay, Namibia in September 2012. These reports, additional interviews and subsequent discussions highlighted some potential opportunities and problems. This article summarises the project to date, showing the methodology and findings as updated by subsequent feedback and further interviews. The findings from key stakeholders of the logistics industry in Namibia include: universal agreement on the importance of logistics to Namibia; the variety in the understanding of the term logistics; the strength of the continuing influence of South Africa as the dominant economic power in southern Africa; and contrasting views on the main factors limiting logistics development, including infrastructure, attitude, government, customs, training, railways, corruption and driver shortage.

  20. Research Reactor Benchmarks

    International Nuclear Information System (INIS)

    A criticality benchmark experiment performed at the Jozef Stefan Institute TRIGA Mark II research reactor is described. This experiment and its evaluation are given as examples of benchmark experiments at research reactors. For this reason the differences and possible problems compared to other benchmark experiments are particularly emphasized. General guidelines for performing criticality benchmarks in research reactors are given. The criticality benchmark experiment was performed in a normal operating reactor core using commercially available fresh 20% enriched fuel elements containing 12 wt% uranium in uranium-zirconium hydride fuel material. Experimental conditions to minimize experimental errors and to enhance computer modeling accuracy are described. Uncertainties in multiplication factor due to fuel composition and geometry data are analyzed by sensitivity analysis. The simplifications in the benchmark model compared to the actual geometry are evaluated. Sample benchmark calculations with the MCNP and KENO Monte Carlo codes are given

  1. Benchmarks for multicomponent diffusion and electrochemical migration

    DEFF Research Database (Denmark)

    Rasouli, Pejman; Steefel, Carl I.; Mayer, K. Ulrich; Rolle, Massimo

    2015-01-01

    been published to date. This contribution provides a set of three benchmark problems that demonstrate the effect of electric coupling during multicomponent diffusion and electrochemical migration and at the same time facilitate the intercomparison of solutions from existing reactive transport codes...... considered in solute transport problems, electromigration can strongly affect mass transport processes. The number of reactive transport models that consider electromigration has been growing in recent years, but a direct model intercomparison that specifically focuses on the role of electromigration has not....... The first benchmark focuses on the 1D transient diffusion of HNO3 (pH = 4) in a NaCl solution into a fixed concentration reservoir, also containing NaCl—but with lower HNO3 concentrations (pH = 6). The second benchmark describes the 1D steady-state migration of the sodium isotope 22Na triggered by...

  2. Logistics Infrastructure and the International Location of Fragmented Production

    OpenAIRE

    Blyde, Juan; Molina, Danielken

    2013-01-01

    Casual evidence suggests that multinational companies increasingly look for places with adequate transport and logistics infrastructure to locate affiliates that participate in cross-border production sharing. Yet, there are no systematic empirical analyses examining how logistics infrastructure interacts with the location decisions made by multinationals. Most studies on the determinants of FDI address the issue of transportation-logistics by examining the impact of distance on the relevant ...

  3. Regional Trade and Logistics Infrastructure: A Spatial Approach

    OpenAIRE

    Sabater, Luisa Alamá; Ramos, Laura Marquez; Burguet, Celestino Suarez

    2011-01-01

    This paper aims to analyze whether the existing logistics platforms network in Spain affects Spanish transport demand by using a spatial framework. In particular, we use demand for transport to export goods to other Spanish provinces as a proxy for logistics infrastructure demand in Spain. Then, we obtain data for trade flows between provinces (NUTS3) in the year 2007. We also obtain data about the number and area of logistics platforms existing in each Spanish province to proxy for the trans...

  4. 76 FR 54468 - Petra Pet, Inc. (a/k/a Petrapport) v. Panda Logistics Limited; Panda Logistics Co., Ltd. (f/k/a...

    Science.gov (United States)

    2011-09-01

    ... Petra Pet, Inc. (a/k/a Petrapport) v. Panda Logistics Limited; Panda Logistics Co., Ltd. (f/k/a panda... Petra Pet, Inc. (a/k/a Petrapport), hereinafter ``Complainant,'' against Respondents Panda Logistics Limited, Panda Logistics Co., Ltd. (f/k/a Panda Int'l Transportation Co., Ltd), and RDM Solutions...

  5. Study on Competitivity-oriented Diagnosis and Evaluation of Human Resources of Logistics Transportation Enterprise%竞争力导向的物流运输企业人力资源素质诊断评价研究

    Institute of Scientific and Technical Information of China (English)

    肖峋; 朱传言

    2012-01-01

    从竞争力导向的视角研究了物流运输企业的人力资源素质诊断评价问题,结合人力资源管理的相关理论和物流运输企业的人力资源管理特征,特别是岗位职责分析,从人力资源的个性特征、基本能力、知识和关键能力四个维度构建了运输企业人力资源素质诊断评价指标体系,该体系建立在对大量的物流运输企业的调查研究和问卷分析基础之上,最后研究了上述素质指标体系在物流运输企业人员招聘、绩效考核、岗位培训以及职业规划中的应用.%In this paper, we studied the diagnosis and evaluation of the human resources of logistics transportation enterprises from a competitivity-oriented perspective and then estahlished the quality diagnosis and evaluation index system of transportation enterprises on the dimensions of individualistic characteristics, hasie capacity, knowledge and key competence of human resources. Finally we investigated the. application of the index system in personnel recruitment, performance assessment, post training and career planning in the logistics transportation enterprises.

  6. Applied logistic regression

    CERN Document Server

    Hosmer, David W; Sturdivant, Rodney X

    2013-01-01

     A new edition of the definitive guide to logistic regression modeling for health science and other applications This thoroughly expanded Third Edition provides an easily accessible introduction to the logistic regression (LR) model and highlights the power of this model by examining the relationship between a dichotomous outcome and a set of covariables. Applied Logistic Regression, Third Edition emphasizes applications in the health sciences and handpicks topics that best suit the use of modern statistical software. The book provides readers with state-of-

  7. Green Logistics Management

    Science.gov (United States)

    Chang, Yoon S.; Oh, Chang H.

    Nowadays, environmental management becomes a critical business consideration for companies to survive from many regulations and tough business requirements. Most of world-leading companies are now aware that environment friendly technology and management are critical to the sustainable growth of the company. The environment market has seen continuous growth marking 532B in 2000, and 590B in 2004. This growth rate is expected to grow to 700B in 2010. It is not hard to see the environment-friendly efforts in almost all aspects of business operations. Such trends can be easily found in logistics area. Green logistics aims to make environmental friendly decisions throughout a product lifecycle. Therefore for the success of green logistics, it is critical to have real time tracking capability on the product throughout the product lifecycle and smart solution service architecture. In this chapter, we introduce an RFID based green logistics solution and service.

  8. Logistics, sustainability and education

    OpenAIRE

    Corns, Christine; Mayer, Robert

    2010-01-01

    There still exist widespread misconceptions about logistics as a profession and its impact on the environment. Collaboration between industry and higher ecucation can support the vision of a modern, sustainable supply chain.

  9. Measuring efficiency in logistics

    Directory of Open Access Journals (Sweden)

    Milan Milovan Andrejić

    2013-06-01

    Full Text Available Dynamic market and environmental changes greatly affect operating of logistics systems. Logistics systems have to realize their activities and processes in an efficient way. The main objective of this paper is to analyze different aspects of efficiency measurement in logistics and to propose appropriate models of measurement. Measuring efficiency in logistics is a complex process that requires consideration of all subsystems, processes and activities as well as the impact of various financial, operational, environmental, quality and other factors. The proposed models have a basis in the Data Envelopment Analysis method. They could help managers in decision making and corrective actions processes. The tests and results of the model show the importance of input and output variables selection.

  10. Logistics innovation development

    DEFF Research Database (Denmark)

    Pedrosa, Alex; Blazevic, Vera; Jasmand, Claudia

    2014-01-01

    Purpose This paper aims to investigate the microfoundations—boundary-spanning employees activities and behaviors—of deepening and broadening customer knowledge during logistics innovation development. Design/methodology/approach A multiple case study approach (six case studies) was adopted to...... investigate the role of boundary-spanning employees in deepening and broadening customer knowledge while developing logistics service innovations. Findings The results show that boundary-spanning employees’ engage sequentially in deepening and broadening customer knowledge throughout the logistics innovation......, this paper contributes to the understanding of the individuals’ behaviors underlying organization-level phenomena, such as logistics service providers’ customer knowledge acquisition. Practical implications (if applicable) Our findings illustrate that boundary-spanning employees might be well advised...

  11. Understanding logistic regression analysis

    OpenAIRE

    Sperandei, Sandro

    2014-01-01

    Logistic regression is used to obtain odds ratio in the presence of more than one explanatory variable. The procedure is quite similar to multiple linear regression, with the exception that the response variable is binomial. The result is the impact of each variable on the odds ratio of the observed event of interest. The main advantage is to avoid confounding effects by analyzing the association of all variables together. In this article, we explain the logistic regression procedure using ex...

  12. Conference Logistics Management 2013

    CERN Document Server

    Haasis, Hans-Dietrich; Kopfer, Herbert; Kotzab, Herbert; Schönberger, Jörn

    2015-01-01

    This contributed volume contains the collected research papers presented at the Logistik-Management-Konferenz 2013 organized by the VHB Wissenschaftliche Kommission Logistik, held in Bremen 2013. The papers reflect the current state-of-the-art in logistics and supply chain management, focusing on environmental sustainability in logistics and supply chain network dynamics and control. The target audience primarily comprises research experts in the field as well as practitioners but the book may also be beneficial for graduate students.

  13. LOGISTICS MANAGEMENT: A PREFACE

    OpenAIRE

    Kartikey Koti

    2014-01-01

    The logistics industry in India is evolving rapidly and it is the interplay of infrastructure, technology and new types of service providers that will define whether the industry is able to help its customers reduce their logistics costs and provide effective services (which are also growing). Changing government policies on taxation and regulation of service providers are going to play an important role in this process. Coordination across various government agencies requires...

  14. North-South Corridor Demonstration Project: Ethical and Logistical Challenges in the Design of a Demonstration Study of Early Antiretroviral Treatment for Long Distance Truck Drivers along a Transport Corridor through South Africa, Zimbabwe, and Zambia

    Directory of Open Access Journals (Sweden)

    G. B. Gomez

    2013-01-01

    Full Text Available Background. Long-distance truck drivers are at risk of acquiring and transmitting HIV and have suboptimal access to care. New HIV prevention strategies using antiretroviral drugs to reduce transmission risk (early antiretroviral therapy (ART at CD4 count >350 cells/μL have shown efficacy in clinical trials. Demonstration projects are needed to evaluate “real world” programme effectiveness. We present the protocol for a demonstration study to evaluate the feasibility, acceptability, and cost of an early ART intervention for HIV-positive truck drivers along a transport corridor across South Africa, Zimbabwe, and Zambia, as part of an enhanced strategy to improve treatment adherence and retention in care. Methods and Analysis. This demonstration study would follow an observational cohort of truck drivers receiving early treatment. Our mixed methods approach includes quantitative, qualitative, and economic analyses. Key ethical and logistical issues are discussed (i.e., choice of drug regimen, recruitment of participants, and monitoring of adherence, behavioural changes, and adverse events. Conclusion. Questions specific to the design of tailored early ART programmes are amenable to operational research approaches but present substantial ethical and logistical challenges. Addressing these in demonstration projects can inform policy decisions regarding strategies to reduce health inequalities in access to HIV prevention and treatment programmes.

  15. Formation of the mechanism of realisation of the logistics strategy of river ports

    OpenAIRE

    Tymoshchuk Olena M.; Melnyk Olga V.

    2013-01-01

    The article identifies the role of river ports in the logistical chain of supplies of the transportation system of Ukraine. It envisages to use the developed logistics strategy for creation of river logistics centres on the basis of river ports with a high level of logistical attractiveness, which would become organisers of cargo delivery at a certain stage of movement of goods and a connecting logistical link at the junction of transport elements of the system (systems of managing the proces...

  16. RISKIND verification and benchmark comparisons

    International Nuclear Information System (INIS)

    This report presents verification calculations and benchmark comparisons for RISKIND, a computer code designed to estimate potential radiological consequences and health risks to individuals and the population from exposures associated with the transportation of spent nuclear fuel and other radioactive materials. Spreadsheet calculations were performed to verify the proper operation of the major options and calculational steps in RISKIND. The program is unique in that it combines a variety of well-established models into a comprehensive treatment for assessing risks from the transportation of radioactive materials. Benchmark comparisons with other validated codes that incorporate similar models were also performed. For instance, the external gamma and neutron dose rate curves for a shipping package estimated by RISKIND were compared with those estimated by using the RADTRAN 4 code and NUREG-0170 methodology. Atmospheric dispersion of released material and dose estimates from the GENII and CAP88-PC codes. Verification results have shown the program to be performing its intended function correctly. The benchmark results indicate that the predictions made by RISKIND are within acceptable limits when compared with predictions from similar existing models

  17. The Conic Benchmark Format

    DEFF Research Database (Denmark)

    Friberg, Henrik A.

    This document constitutes the technical reference manual of the Conic Benchmark Format with le extension: .cbf or .CBF. It unies linear, second-order cone (also known as conic quadratic) and semidenite optimization with mixed-integer variables. The format has been designed with benchmark libraries...... in mind, and therefore focuses on compact and easily parsable representations. The problem structure is separated from the problem data, and the format moreover facilitate benchmarking of hotstart capability through sequences of changes....

  18. Bayesian Benchmark Dose Analysis

    OpenAIRE

    Fang, Qijun; Piegorsch, Walter W.; Barnes, Katherine Y.

    2014-01-01

    An important objective in environmental risk assessment is estimation of minimum exposure levels, called Benchmark Doses (BMDs) that induce a pre-specified Benchmark Response (BMR) in a target population. Established inferential approaches for BMD analysis typically involve one-sided, frequentist confidence limits, leading in practice to what are called Benchmark Dose Lower Limits (BMDLs). Appeal to Bayesian modeling and credible limits for building BMDLs is far less developed, however. Indee...

  19. Risk Management with Benchmarking

    OpenAIRE

    Suleyman Basak; Alex Shapiro; Lucie Teplá

    2005-01-01

    Portfolio theory must address the fact that, in reality, portfolio managers are evaluated relative to a benchmark, and therefore adopt risk management practices to account for the benchmark performance. We capture this risk management consideration by allowing a prespecified shortfall from a target benchmark-linked return, consistent with growing interest in such practice. In a dynamic setting, we demonstrate how a risk-averse portfolio manager optimally under- or overperforms a target benchm...

  20. Aeroelastic Benchmark Experiments Project

    Data.gov (United States)

    National Aeronautics and Space Administration — M4 Engineering proposes to conduct canonical aeroelastic benchmark experiments. These experiments will augment existing sources for aeroelastic data in the...

  1. How Activists Use Benchmarks

    DEFF Research Database (Denmark)

    Seabrooke, Leonard; Wigan, Duncan

    2015-01-01

    Non-governmental organisations use benchmarks as a form of symbolic violence to place political pressure on firms, states, and international organisations. The development of benchmarks requires three elements: (1) salience, that the community of concern is aware of the issue and views it as...... important; (2) will, that activists and issue entrepreneurs will carry the message forward; and (3) expertise, that benchmarks created can be defended as accurate representations of what is happening on the issue of concern. We contrast two types of benchmarking cycles where salience, will, and expertise...

  2. Logistic service providers and sustainable physical distribution

    Directory of Open Access Journals (Sweden)

    Stef Weijers

    2012-06-01

    Full Text Available Background: Logistic Service Providers main concern was to ensure reliability for a low price (Christopher, 2005. Dutch Logistic Service Providers still have these two aspects at the top of their list, but also have to take in a new aspect: sustainability. 88% Of the investigated Logistic Service Providers have included sustainability in the company's goals. These Logistic Service Providers have developed different strategies to achieve a higher level of sustainability. This paper presents the results of a study into what Logistic Service Providers say what they are doing, or intend to do, to improve sustainability for their transport services. In this way insight is given in the attitude of Dutch Logistic Service Providers towards sustainability and how they intend to translate this into business practise: internal solutions or new methods incorporating external partners. Methods: Various methods of the investigations were used, among which the analysis of the statements about the sustainabilityon the websites of various companies as well as the questionnaire per Internet. The research covered 50 largest logistics companies operating in the Netherlands and 60 companies that competed for the award "Lean and Green" advertised in the Netherlands. In addition, the Internet survey was answered by 41 companies that belong to the network of our university. Results: The investigation has shown that sustainability is handled by the logistics company as an integral part of the corporate strategy. In contrast, shippers depend in the choice of logistics services primarily on such classical aspects as the reliability or the price and the sustainability play a minor role. Conclusions: Trying to find methods to improve the sustainability, Dutch logistics service providers, in the first place, look for solutions that increase the efficiency and therefore the cost reduction potential. Solutions, which require the involvement of clients, were less often

  3. Geo-Information Logistical Modeling

    OpenAIRE

    Nikolaj I. Kovalenko

    2014-01-01

    This paper examines geo-information logistical modeling. The author illustrates the similarities between geo-informatics and logistics in the area of spatial objectives; illustrates that applying geo-data expands the potential of logistics; brings to light geo-information modeling as the basis of logistical modeling; describes the types of geo-information logistical modeling; describes situational geo-information modeling as a variety of geo-information logistical modeling.

  4. Geo-Information Logistical Modeling

    Directory of Open Access Journals (Sweden)

    Nikolaj I. Kovalenko

    2014-11-01

    Full Text Available This paper examines geo-information logistical modeling. The author illustrates the similarities between geo-informatics and logistics in the area of spatial objectives; illustrates that applying geo-data expands the potential of logistics; brings to light geo-information modeling as the basis of logistical modeling; describes the types of geo-information logistical modeling; describes situational geo-information modeling as a variety of geo-information logistical modeling.

  5. Measures of effectiveness in logistics

    OpenAIRE

    Schrady, David A.

    1989-01-01

    Approved for public release; distribution is unlimited. This report examines measures of effectiveness in naval logistics. Logistics is a warfare support function and it is most desirable to be able to relate resources committed for logistics capabilities to warfare outcomes. In general this cannot be done. Examples of the sorts of measures of effectiveness used in acquisition logistics and in in-service support are given. Battle group logistics, a part of operational logistics, is examine...

  6. Sustainability and the Logistics Service Industry

    DEFF Research Database (Denmark)

    Prockl, Günter; Gammelgaard, Britta

    Sustainability in business is clearly recognized as a very important topic which is intensively discussed in theory and practice. (When it comes to the social and ecological aspects of sustainability, the logistics and transportation industry is often considered one of the prime suspects to be...... identified as a major polluter reluctant to implement changes and improvements. A workshop was designed and organized in the fall of 2011 to start a discussion on the role that the logistics service industry plays or should play in the sustainability business. The clear objective was to work on the issue...... – not from the viewpoint of politics and society, not from the viewpoint of industry and the retail sector, and not from that of academia ‐ but from the view of the logistics service providers. In other words, the workshop was designed to help develop a clear statement of the role of the logistics...

  7. CIS Countries, Lithuania, Latvia, Estonia, Georgia: Comparative Analysis of Logistics

    Directory of Open Access Journals (Sweden)

    Poleshchuk Irina Ivanovna

    2014-06-01

    Full Text Available The article analyzes the logistics services market of the CIS countries, Lithuania, Latvia, Estonia, Georgia on the basis of the LPI for 2011 and the LPI for 2013. The countries under analysis were divided into 3 groups depending on the logistics services market development. Due to the experts’ survey the strengths and weaknesses of the CIS countries, Lithuania, Latvia, Estonia, Georgia logistics systems were revealed, the influence of the external environment factors was analyzed, as a result the matrix of the transport-logistics sphere condition of the countries under analysis was built. The authors analyzed the groups of the countries depending on the logistics sphere development.

  8. Mini pressurized logistics module (MPLM)

    Science.gov (United States)

    Vallerani, E.; Brondolo, D.; Basile, L.

    1996-06-01

    The MPLM Program was initiated through a Memorandum of Understanding (MOU) between the United States' National Aeronautics and Space Administration (NASA) and Italy's ASI, the Italian Space Agency, that was signed on 6 December 1991. The MPLM is a pressurized logistics module that will be used to transport supplies and materials (up to 20,000 lb), including user experiments, between Earth and International Space Station Alpha (ISSA) using the Shuttle, to support active and passive storage, and to provide a habitable environment for two people when docked to the Station. The Italian Space Agency has selected Alenia Spazio to develop MPLM modules that have always been considered a key element for the new International Space Station taking benefit from its design flexibility and consequent possible cost saving based on the maximum utilization of the Shuttle launch capability for any mission. In the frame of the very recent agreement between the U.S. and Russia for cooperation in space, that foresees the utilization of MIR 1 hardware, the Italian MPLM will remain an important element of the logistics system, being the only pressurized module designed for re-entry. Within the new scenario of anticipated Shuttle flights to MIR 1 during Space Station phase 1, MPLM remains a candidate for one or more missions to provide MIR 1 resupply capabilities and advanced ISSA hardware/procedures verification. Based on the concept of Flexible Carriers, Alenia Spazio is providing NASA with three MPLM flight units that can be configured according to the requirements of the Human-Tended Capability (HTC) and Permanent Human Capability (PHC) of the Space Station. Configurability will allow transportation of passive cargo only, or a combination of passive and cold cargo accommodated in R/F racks. Having developed and qualified the baseline configuration with respect to the worst enveloping condition, each unit could be easily configured to the passive or active version depending upon the

  9. Extended calculations of OECD/NEA phase II-C burnup credit criticality benchmark problem for PWR spent fuel transport cask by using MCNP-4B2 code and JENDL-3.2 library

    International Nuclear Information System (INIS)

    The reactivity effect of the asymmetry of axial burnup profile in burnup credit criticality safety is studied for a realistic PWR spent fuel transport cask proposed in the current OECD/NEA Phase II-C benchmark problem. The axial burnup profiles are simulated in 21 material zones based on in-core flux measurements varying from strong asymmetry to more or less no asymmetry. Criticality calculations in a 3-D model have been performed using the continuous energy Monte Carlo code MCNP-4B2 and the nuclear data library JENDL-3.2. Calculation conditions are determined with consideration of the axial fission source convergence. Calculations are carried out not only for cases proposed in the benchmark but also for additional cases assuming symmetric burnup profile. The actinide-only approach supposed for first domestic introduction of burnup credit into criticality evaluation is also considered in addition to the actinide plus fission product approach adopted in the benchmark. The calculated results show that keff and the end effect increase almost linearly with increasing burnup axial offset that is defined as one of typical parameters showing the intensity of axial burnup asymmetry. The end effect is more sensitive to the asymmetry of burnup profile for the higher burnup. For an axially distributed burnup, the axial fission source distribution becomes strongly asymmetric as its peak shifts toward the top end of the fuel's active zone where the local burnup is less than that of the bottom end. The peak of fission source distribution becomes higher with the increase of either the asymmetry of burnup profile or the assembly-averaged burnup. The conservatism of the assumption of uniform axial burnup based on the actinide-only approach is estimated quantitatively in comparison with the keff result calculated with experiment-based strongest asymmetric axial burnup profile with the actinide plus fission product approach. (author)

  10. Impact of Relationship Level with Carrier for Logistics Performance

    Directory of Open Access Journals (Sweden)

    Li Xiaojin

    2013-01-01

    Full Text Available The intensification of the market competition makes more and more enterprises will be outsourcing of logistics transportation. According to the research objective, based on trust, communication, commitment, adaptation, interdependence and cooperation 6 factors as factors that measure the relationship level, 5 indexes were selected to reliability, quality of service, transportation cost, inventory cost, flexible to reflect the enterprise logistics performance, through the investigation and analysis of data on 74 bamboo products companies in Anji of Zhejiang, China, found that there is a significant positive correlation between the relationship level and enterprise logistics performance, strengthen the relationship management can effectively improve the logistics operation performance.

  11. Benchmark analysis of MCNP trademark ENDF/B-VI iron

    International Nuclear Information System (INIS)

    The MCNP ENDF/B-VI iron cross-section data was subjected to four benchmark studies as part of the Hiroshima/Nagasaki dose re-evaluation for the National Academy of Science and the Defense Nuclear Agency. The four benchmark studies were: (1) the iron sphere benchmarks from the Lawrence Livermore Pulsed Spheres; (2) the Oak Ridge National Laboratory Fusion Reactor Shielding Benchmark; (3) a 76-cm diameter iron sphere benchmark done at the University of Illinois; (4) the Oak Ridge National Laboratory Benchmark for Neutron Transport through Iron. MCNP4A was used to model each benchmark and computational results from the ENDF/B-VI iron evaluations were compared to ENDF/B-IV, ENDF/B-V, the MCNP Recommended Data Set (which includes Los Alamos National Laboratory Group T-2 evaluations), and experimental data. The results show that the ENDF/B-VI iron evaluations are as good as, or better than, previous data sets

  12. Exploring improvements in patient logistics in Dutch hospitals with a survey

    OpenAIRE

    van Lent Wineke AM; Sanders E; van Harten Wim H

    2012-01-01

    Abstract Background Research showed that promising approaches such as benchmarking, operations research, lean management and six sigma, could be adopted to improve patient logistics in healthcare. To our knowledge, little research has been conducted to obtain an overview on the use, combination and effects of approaches to improve patient logistics in hospitals. We therefore examined the approaches and tools used to improve patient logistics in Dutch hospitals, the reported effects of these a...

  13. Logistics innovation development

    DEFF Research Database (Denmark)

    Pedrosa, Alex; Blazevic, Vera; Jasmand, Claudia

    2015-01-01

    Purpose – The purpose of this paper is to investigate the microfoundations of customer knowledge acquisition during logistics innovation development. Specifically, the authors explore the activities and behaviors of employees with customer contact (i.e. boundary-spanning employees (BSEs)) to deepen...... and broaden their knowledge about customers for the development of innovations. Design/methodology/approach – Qualitative research based on multiple semi-structured interviews with BSEs of six logistics service providers was conducted to explore the deepening and broadening of customer knowledge during...... innovation development. Data were analyzed for similarities and differences in BSEs’ knowledge acquisition and their interactions with customers across six innovations. Findings – Results show that BSEs engage sequentially in deepening and broadening customer knowledge throughout the logistics innovation...

  14. Logistics innovation development

    DEFF Research Database (Denmark)

    Pedrosa, Alex; Blazevic, Vera; Jasmand, Claudia

    2015-01-01

    Purpose — This paper aims to investigate the microfoundations of customer knowledge acquisition during logistics innovation development. Specifically, we explore the activities and behaviors of employees with customer contact (i.e., boundary-spanning employees) to deepen and broaden their knowledge...... about customers for the development of innovations. Design/methodology/approach — Qualitative research based on multiple semi-structured interviews with boundary-spanning employees of six logistics service providers was conducted to explore the deepening and broadening of customer knowledge during...... knowledge throughout the logistics innovation development process. Yet, the specific sequence depends on the type of innovation developed (customized versus standardized). Customer knowledge tends to be deepened in one-on-one interactions, while knowledge tends to be broadened in interactions with numerous...

  15. Green Maritime Logistics

    DEFF Research Database (Denmark)

    Psaraftis, Harilaos N.

    2014-01-01

    Typical problems in maritime logistics include, among others, optimal ship speed, ship routing and scheduling, fleet deployment, fleet size and mix, weather routing, intermodal network design, modal split, transshipment, queuing at ports, terminal management, berth allocation, and total supply...... chain management. The traditional analysis of these problems has been in terms of cost- benefit and other optimization criteria from the point of view of the logistics provider, carrier, shipper, or other end-user. Such traditional analysis by and large either ignores environmental issues, or considers...... them of secondary importance. Green maritime logistics tries to bring the environmental dimension into the problem, and specifically the dimension of emissions reduction, by analyzing various trade-offs and exploring ‘win-win’ solutions. This talk takes a look at the trade-offs that are at stake in the...

  16. Benchmark af erhvervsuddannelserne

    DEFF Research Database (Denmark)

    Bogetoft, Peter; Wittrup, Jesper

    I dette arbejdspapir diskuterer vi, hvorledes de danske erhvervsskoler kan benchmarkes, og vi præsenterer resultaterne af en række beregningsmodeller. Det er begrebsmæssigt kompliceret at benchmarke erhvervsskolerne. Skolerne udbyder en lang række forskellige uddannelser. Det gør det vanskeligt at...

  17. Thermal Performance Benchmarking (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Moreno, G.

    2014-11-01

    This project will benchmark the thermal characteristics of automotive power electronics and electric motor thermal management systems. Recent vehicle systems will be benchmarked to establish baseline metrics, evaluate advantages and disadvantages of different thermal management systems, and identify areas of improvement to advance the state-of-the-art.

  18. Internet based benchmarking

    DEFF Research Database (Denmark)

    Bogetoft, Peter; Nielsen, Kurt

    2005-01-01

    We discuss the design of interactive, internet based benchmarking using parametric (statistical) as well as nonparametric (DEA) models. The user receives benchmarks and improvement potentials. The user is also given the possibility to search different efficiency frontiers and hereby to explore...

  19. Studies on Logistics and Logistics Technology of China

    Institute of Scientific and Technical Information of China (English)

    LuoYixin

    2005-01-01

    For further pushing ahead with the development of China's logistics industry, the author, based on the status quo of China's logistics industry, affirms the achievements made in the development course of the industry of China. By studying various respects of the industry including the understanding of logistics, standards of technical terms, logistics technologies and management, the author analyzes the major problems existence in China's current logistics industry and puts forward the rationalization proposal.

  20. Verification and validation benchmarks.

    Energy Technology Data Exchange (ETDEWEB)

    Oberkampf, William Louis; Trucano, Timothy Guy

    2007-02-01

    Verification and validation (V&V) are the primary means to assess the accuracy and reliability of computational simulations. V&V methods and procedures have fundamentally improved the credibility of simulations in several high-consequence fields, such as nuclear reactor safety, underground nuclear waste storage, and nuclear weapon safety. Although the terminology is not uniform across engineering disciplines, code verification deals with assessing the reliability of the software coding, and solution verification deals with assessing the numerical accuracy of the solution to a computational model. Validation addresses the physics modeling accuracy of a computational simulation by comparing the computational results with experimental data. Code verification benchmarks and validation benchmarks have been constructed for a number of years in every field of computational simulation. However, no comprehensive guidelines have been proposed for the construction and use of V&V benchmarks. For example, the field of nuclear reactor safety has not focused on code verification benchmarks, but it has placed great emphasis on developing validation benchmarks. Many of these validation benchmarks are closely related to the operations of actual reactors at near-safety-critical conditions, as opposed to being more fundamental-physics benchmarks. This paper presents recommendations for the effective design and use of code verification benchmarks based on manufactured solutions, classical analytical solutions, and highly accurate numerical solutions. In addition, this paper presents recommendations for the design and use of validation benchmarks, highlighting the careful design of building-block experiments, the estimation of experimental measurement uncertainty for both inputs and outputs to the code, validation metrics, and the role of model calibration in validation. It is argued that the understanding of predictive capability of a computational model is built on the level of

  1. Improving blood sample logistics using simulation

    DEFF Research Database (Denmark)

    Jørgensen, Pelle Morten Thomas; Jacobsen, Peter

    2012-01-01

    Using simulation as an approach to display and improve internal logistics and handling at hospitals has great potential. This research will show how a simulation model can be used to evaluate changes made to two different cases of transportation of blood samples at a hospital, by evaluating...

  2. 层次分析法在运邮物流中心选址中的应用%The Logistics Center of Transportation and Postal Selected Location Based on Analytic Hierarchy Process

    Institute of Scientific and Technical Information of China (English)

    张彦虎; 李佩坤

    2012-01-01

    采用层次分析法,根据邮政网络和运输网络各自的特点,从经济性、适应性、协调性和社会性4个方面出发,科学地分析运邮物流中心选址的各种影响因素,得出各因素对于运邮物流中心选址的重要性排序。应用层次分析法简化运邮物流中心的选址过程,具有一定适用性。%Hierarchy analysis process adopted,according to the characteristics of the postal network and the transport network,starting four aspects such as the economical,the adaptable,the coordinative,and the social,we scientifically analyze factors of the postal transport logistics center location and get the order of all the factors by the importance for the postal and email center.AHP are used to simplify the selection process of postal distribution center that has certain applicability.

  3. Olympic Effect on Beijing Logistics

    Institute of Scientific and Technical Information of China (English)

    Guo Liqin

    2008-01-01

    @@ Olympic logistics network as preparationIn 2003, the Beijing municipal government proposed the blueprint for three key logistics projects for the 2008 Olympics. It planned to build three logistics bases (at Yancun in Fangshan District, Majuqiao in Tongzhou, and Shahe in Changping District) along with four logistics centers (at Tianzhu in Chaoyang, Shibajiadian in Chaoyang, Dazhuang in Daxing, and Mentougou).

  4. Evaluation on the Operating Performance of Transport and Logistics Listed Companies--Based on the DEA%运输物流上市公司经营绩效评价--基于数据包络分析

    Institute of Scientific and Technical Information of China (English)

    杨子刚; 于海朋; 毛文坤

    2013-01-01

    The development of logistics industry of China has advanced rapidly in recent years, and it has become the new bright-ness of China's economic growth. But Lower efficiency, higher cost and some other factors restrict the development of logistics industry. This article analyzes the operating performances of Chinese transport and logistics listed companies by the DEA model, which based on the data of 2011. The results show that the operating performances of the transport and logistics listed companies have been at a relative-ly high level. The average of overall efficiency is 0.901. The average of pure technical efficiency is 0.942. The average of scale efficiency is 0.956. But the efficiency of DEA is low, only having 14 effective companies among the 38 companies,accounting for 36.84% of the overall. Finally, according to the conclusions of DEA analysis, it inspires the companies should adopt to reduce costs, streamline staff and control scale in order to improve operating performance and achieve optimum of resource distribution.%  近年来,中国物流业得到了突飞猛进的发展,成为推动我国经济成长的新亮点.但运作效率较低、成本较高等因素制约着物流业的发展.本文以2011年中国运输物流上市公司的相关数据为样本,利用数据包络分析法,从投入产出角度对其经营绩效进行了分析评价.结果表明,我国运输物流企业的经营绩效已处于相对较高的水平,2011年的综合效率平均得分达到0.901,纯技术效率平均得分为0.942,规模效率平均得分为0.956;但从总体来看, DEA有效率偏低,2011年度38家运输物流上市公司(剔除数据不完备的3家)中仅有14家达到DEA有效,占总体的比重为36.84%.最后根据DEA分析的结论,本文提出通过采取降低成本费用、精简员工、控制企业规模等措施来提高公司经营绩效和实现资源配置最优的政策建议.

  5. Routing Optimization Based on Taboo Search Algorithm for Logistic Distribution

    Directory of Open Access Journals (Sweden)

    Hongxue Yang

    2014-04-01

    Full Text Available Along with the widespread application of the electronic commerce in the modern business, the logistic distribution has become increasingly important. More and more enterprises recognize that the logistic distribution plays an important role in the process of production and sales. A good routing for logistic distribution can cut down transport cost and improve efficiency. In order to cut down transport cost and improve efficiency, a routing optimization based on taboo search for logistic distribution is proposed in this paper. Taboo search is a metaheuristic search method to perform local search used for logistic optimization. The taboo search is employed to accelerate convergence and the aspiration criterion is combined with the heuristics algorithm to solve routing optimization. Simulation experimental results demonstrate that the optimal routing in the logistic distribution can be quickly obtained by the taboo search algorithm

  6. Bonded+ Logistics=?

    Institute of Scientific and Technical Information of China (English)

    WangBin

    2004-01-01

    Could “bonded” and “lo gistics” be effectively related?This concerns not only the future development of its port logistics but also points out in real practice a new way of system transformation for the Chinese bonded areas.And it is with such questions in mind

  7. Logistics Services Communication

    CERN Multimedia

    2006-01-01

    Members of the personnel are invited to take note that only parcels corresponding to official orders or contracts will be handled at CERN. Individuals are not authorised to have private merchandise delivered to them at CERN and private deliveries will not be accepted by the Goods Reception services. Thank you for your understanding. Logistics Services - FI Department - 79947

  8. Logistics Services Communication

    CERN Multimedia

    2006-01-01

    Members of the personnel are invited to take note that only parcels corresponding to official orders or contracts will be handled at CERN. Individuals are not authorisedto have private merchandise delivered to them at CERN and private deliveries will not be accepted by the Goods Reception services. Thank you for your understanding. Logistics Services - FI Department - 79947

  9. Bayesian logistic regression analysis

    NARCIS (Netherlands)

    Van Erp, H.R.N.; Van Gelder, P.H.A.J.M.

    2012-01-01

    In this paper we present a Bayesian logistic regression analysis. It is found that if one wishes to derive the posterior distribution of the probability of some event, then, together with the traditional Bayes Theorem and the integrating out of nuissance parameters, the Jacobian transformation is an

  10. A Logistics Revolution

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The entry of international industry leaders is stirring up profound logistics changes in China After 23 rounds of negotiations in the past two years. FedEx's first transit center in China is to be built in the Guangzhou Baiyun International Airport soon.

  11. Analysis of Logistics in Support of a Human Lunar Outpost

    Science.gov (United States)

    Cirillo, William; Earle, Kevin; Goodliff, Kandyce; Reeves, j. D.; Andrashko, Mark; Merrill, R. Gabe; Stromgren, Chel

    2008-01-01

    Strategic level analysis of the integrated behavior of lunar transportation system and lunar surface system architecture options is performed to inform NASA Constellation Program senior management on the benefit, viability, affordability, and robustness of system design choices. This paper presents an overview of the approach used to perform the campaign (strategic) analysis, with an emphasis on the logistics modeling and the impacts of logistics resupply on campaign behavior. An overview of deterministic and probabilistic analysis approaches is provided, with a discussion of the importance of each approach to understanding the integrated system behavior. The logistics required to support lunar surface habitation are analyzed from both 'macro-logistics' and 'micro-logistics' perspectives, where macro-logistics focuses on the delivery of goods to a destination and micro-logistics focuses on local handling of re-supply goods at a destination. An example campaign is provided to tie the theories of campaign analysis to results generation capabilities.

  12. Benchmark calculations of power distribution within assemblies

    International Nuclear Information System (INIS)

    The main objective of this Benchmark is to compare different techniques for fine flux prediction based upon coarse mesh diffusion or transport calculations. We proposed 5 ''core'' configurations including different assembly types (17 x 17 pins, ''uranium'', ''absorber'' or ''MOX'' assemblies), with different boundary conditions. The specification required results in terms of reactivity, pin by pin fluxes and production rate distributions. The proposal for these Benchmark calculations was made by J.C. LEFEBVRE, J. MONDOT, J.P. WEST and the specification (with nuclear data, assembly types, core configurations for 2D geometry and results presentation) was distributed to correspondents of the OECD Nuclear Energy Agency. 11 countries and 19 companies answered the exercise proposed by this Benchmark. Heterogeneous calculations and homogeneous calculations were made. Various methods were used to produce the results: diffusion (finite differences, nodal...), transport (Pij, Sn, Monte Carlo). This report presents an analysis and intercomparisons of all the results received

  13. Benchmark field study of deep neutron penetration

    Science.gov (United States)

    Morgan, J. F.; Sale, K.; Gold, R.; Roberts, J. H.; Preston, C. C.

    1991-06-01

    A unique benchmark neutron field has been established at the Lawrence Livermore National Laboratory (LLNL) to study deep penetration neutron transport. At LLNL, a tandem accelerator is used to generate a monoenergetic neutron source that permits investigation of deep neutron penetration under conditions that are virtually ideal to model, namely the transport of mono-energetic neutrons through a single material in a simple geometry. General features of the Lawrence Tandem (LATAN) benchmark field are described with emphasis on neutron source characteristics and room return background. The single material chosen for the first benchmark, LATAN-1, is a steel representative of Light Water Reactor (LWR) Pressure Vessels (PV). Also included is a brief description of the Little Boy replica, a critical reactor assembly designed to mimic the radiation doses from the atomic bomb dropped on Hiroshima, and its us in neutron spectrometry.

  14. Computational benchmark for deep penetration in iron

    International Nuclear Information System (INIS)

    A benchmark for calculation of neutron transport through iron is now available based upon a rigorous Monte Carlo treatment of ENDF/B-IV and ENDF/B-V cross sections. The currents, flux, and dose (from monoenergetic 2, 14, and 40 MeV sources) have been tabulated at various distances through the slab using a standard energy group structure. This tabulation is available in a Los Alamos Scientific Laboratory report. The benchmark is simple to model and should be useful for verifying the adequacy of one-dimensional transport codes and multigroup libraries for iron. This benchmark also provides useful insights regarding neutron penetration through iron and displays differences in fluxes calculated with ENDF/B-IV and ENDF/B-V data bases

  15. Airport Logistics : Modeling and Optimizing the Turn-Around Process

    OpenAIRE

    Norin, Anna

    2008-01-01

    The focus of this licentiate thesis is air transportation and especially the logistics at an airport. The concept of airport logistics is investigated based on the following definition: Airport logistics is the planning and control of all resources and information that create a value for the customers utilizing the airport. As a part of the investigation, indicators for airport performance are considered. One of the most complex airport processes is the turn-around process. The turn-around is...

  16. Linking to compete: logistics and global competitiveness interaction

    OpenAIRE

    Önsel Ekici, Şule; Onsel Ekici, Sule; Kabak, Özgür; Kabak, Ozgur; Ülengin, Füsun; Ulengin, Fusun

    2016-01-01

    A country’s ability to trade globally depends to a great extent on the traders’ access to efficient logistics networks. The efficiency of logistics networks, in its turn, depends on government services, investments, and policies. Building infrastructure, developing a regulatory regime for transport services, and designing and implementing efficient customs clearance procedures are the areas where governments play an important role. One of the measures for logistics performance at national lev...

  17. Assessment of logistic outlays in industrial solid waste management

    OpenAIRE

    Janusz Grabara; Mariana Man

    2014-01-01

    Out of concern for environmental protection is an increasingly common practice. Companies thus have an additional task which is the correct organization of the industrial waste management. This is achieved through the use of logistics processes in industrial waste management, mainly such as warehousing, transport, storage and recovery. These processes involve the formation of logistics costs resulting from waste management. The paper presents a mathematical model for cost of logistics managem...

  18. The Use of Cost Information in Frozen Food Logistics

    OpenAIRE

    Mustafa Gürol Durak; İdil Ünverdi

    2014-01-01

    Transportation of different kinds of products to different locations is an activity that requires specialization. From this point of view, logistics industry plays a vital role in providing efficiency in economic activities. When logistics activities, which already have a complex structure, are managed inefficiently, business activities in general also become inefficient. In this context, preferring the third party logistics service, which is biasedly considered as an additional cost creating...

  19. A performance geodynamo benchmark

    Science.gov (United States)

    Matsui, H.; Heien, E. M.

    2014-12-01

    In the last ten years, a number of numerical dynamo models have successfully represented basic characteristics of the geomagnetic field. However, to approach the parameters regime of the Earth's outer core, we need massively parallel computational environment for extremely large spatial resolutions. Local methods are expected to be more suitable for massively parallel computation because the local methods needs less data communication than the spherical harmonics expansion, but only a few groups have reported results of the dynamo benchmark using local methods (Harder and Hansen, 2005; Matsui and Okuda, 2005; Chan et al., 2007) because of the difficulty treating magnetic boundary conditions based on the local methods. On the other hand, some numerical dynamo models using spherical harmonics expansion has performed successfully with thousands of processes. We perform benchmark tests to asses various numerical methods to asses the next generation of geodynamo simulations. The purpose of the present benchmark test is to assess numerical geodynamo models on a massively parallel computational platform. To compare among many numerical methods as possible, we consider the model with the insulated magnetic boundary by Christensen et al. (2001) and with the pseudo vacuum magnetic boundary, because the pseudo vacuum boundaries are implemented easier by using the local method than the magnetic insulated boundaries. In the present study, we consider two kinds of benchmarks, so-called accuracy benchmark and performance benchmark. In the present study, we will report the results of the performance benchmark. We perform the participated dynamo models under the same computational environment (XSEDE TACC Stampede), and investigate computational performance. To simplify the problem, we choose the same model and parameter regime as the accuracy benchmark test, but perform the simulations with much finer spatial resolutions as possible to investigate computational capability (e

  20. Future electric scenarios for urban logistics

    Energy Technology Data Exchange (ETDEWEB)

    2012-07-01

    This report is produced by the SAFE Urban Logistics project - a Norden Energy and Transport project that aims to study and analyse the prospect of integrating electric vehicles in the goods distribution of urban areas. The goal of the project is to create next practice solutions, offer promising opportunities for urban logistics operations, in order to become both more efficient and more environmentally sustainable. The SAFE Urban Logistics aims to match business models for making the application of electric vehicles within inner city logistics happen. The project will also create proposals for sustainable suitable technical solutions associated with these business models. This is one out of four reports produced by the project. Read more about the project and get access to all the reports on www.safeproject.eu. This report is the final output of the project and describes four scenarios for the future of urban logistics based on the urbanization and potential political interventions. The described scenarios will be evaluated on environmental effects and describe a potential idea that can bring this future one step closer. An array of potential business and logistics models as well as technical solutions that could be applied in order to integrate EV's on a larger basis are added at the end of the document. It is supposed to act as inspiration for the strategic development of logistics companies as well as local and governmental policies. Knowledge and experiences in this report are mainly taken from Denmark, Norway and Sweden. When it comes to logistic recommendations and experiences, influence from other parts of Europe have also been included. (Author)

  1. Benchmarking expert system tools

    Science.gov (United States)

    Riley, Gary

    1988-01-01

    As part of its evaluation of new technologies, the Artificial Intelligence Section of the Mission Planning and Analysis Div. at NASA-Johnson has made timing tests of several expert system building tools. Among the production systems tested were Automated Reasoning Tool, several versions of OPS5, and CLIPS (C Language Integrated Production System), an expert system builder developed by the AI section. Also included in the test were a Zetalisp version of the benchmark along with four versions of the benchmark written in Knowledge Engineering Environment, an object oriented, frame based expert system tool. The benchmarks used for testing are studied.

  2. Toxicological Benchmarks for Wildlife

    Energy Technology Data Exchange (ETDEWEB)

    Sample, B.E. Opresko, D.M. Suter, G.W.

    1993-01-01

    Ecological risks of environmental contaminants are evaluated by using a two-tiered process. In the first tier, a screening assessment is performed where concentrations of contaminants in the environment are compared to no observed adverse effects level (NOAEL)-based toxicological benchmarks. These benchmarks represent concentrations of chemicals (i.e., concentrations presumed to be nonhazardous to the biota) in environmental media (water, sediment, soil, food, etc.). While exceedance of these benchmarks does not indicate any particular level or type of risk, concentrations below the benchmarks should not result in significant effects. In practice, when contaminant concentrations in food or water resources are less than these toxicological benchmarks, the contaminants may be excluded from further consideration. However, if the concentration of a contaminant exceeds a benchmark, that contaminant should be retained as a contaminant of potential concern (COPC) and investigated further. The second tier in ecological risk assessment, the baseline ecological risk assessment, may use toxicological benchmarks as part of a weight-of-evidence approach (Suter 1993). Under this approach, based toxicological benchmarks are one of several lines of evidence used to support or refute the presence of ecological effects. Other sources of evidence include media toxicity tests, surveys of biota (abundance and diversity), measures of contaminant body burdens, and biomarkers. This report presents NOAEL- and lowest observed adverse effects level (LOAEL)-based toxicological benchmarks for assessment of effects of 85 chemicals on 9 representative mammalian wildlife species (short-tailed shrew, little brown bat, meadow vole, white-footed mouse, cottontail rabbit, mink, red fox, and whitetail deer) or 11 avian wildlife species (American robin, rough-winged swallow, American woodcock, wild turkey, belted kingfisher, great blue heron, barred owl, barn owl, Cooper's hawk, and red

  3. Shielding benchmark problems, (2)

    International Nuclear Information System (INIS)

    Shielding benchmark problems prepared by Working Group of Assessment of Shielding Experiments in the Research Committee on Shielding Design in the Atomic Energy Society of Japan were compiled by Shielding Laboratory in Japan Atomic Energy Research Institute. Fourteen shielding benchmark problems are presented newly in addition to twenty-one problems proposed already, for evaluating the calculational algorithm and accuracy of computer codes based on discrete ordinates method and Monte Carlo method and for evaluating the nuclear data used in codes. The present benchmark problems are principally for investigating the backscattering and the streaming of neutrons and gamma rays in two- and three-dimensional configurations. (author)

  4. Role of logistics centres in national logistics system

    Directory of Open Access Journals (Sweden)

    2010-06-01

    Full Text Available This article presents a division of logistics centres according to various criteria and specifies their role in a national logistics system. It provides a classification of the main logistics network nodes. It also describes those features of logistics centres that have an impact on zoning development of towns and regions. The current situation in the national logistics system has been presented here against theoretical analyses and also a concept for the development of a logistics centre network in Poland has been formulated.

  5. Analysis of scholar transport safety based upon accidentology and benchmarking database. Delivrable D1.1. SAFEWAY2SCHOOL report: seventh framework programme Sustainable surface transport (SST)-2008-RTD-1 Collaborative project 233967

    OpenAIRE

    Pauzie, A; JANKOWSKA, D; EGGER, S.; MUNKSTEDT, S; Spence, A; ANUND, A; MONTARINI, R; FERRARINI, C

    2010-01-01

    This report is based upon knowledge available, on one hand on road safety issues and context (A1.1, Del 1.4 : accident analysis database) and, on the other hand, on technologies on the market or under development developed in current research projects, including related measures and guidelines (A1.3, Benchmarking database). For each of these topics, a small paragraph overviews the current context and safety issues, functional concept and maturity of available technology, identified European p...

  6. Challenges of information technology and supply chain management in logistic sector: with an overview of Quehenberger logistics in Macedonia

    OpenAIRE

    Temjanovski, Riste

    2014-01-01

    Abstract— The Logistics and freight transport industries are ones of the most dynamic and important sectors of each economy. Logistics provides a vital “backbone” function in supporting macroeconomic processes and the operation of markets, critical infrastructures and distribution to both business and consumers, which extended much more with process of globalization. Every contemporary logistic company is conducted by the quality and precious with IT technologies in supply chain manage...

  7. Typology of Logistics Curricula – Four Categories of Logistics of Logistics Undergraduate Education in Europe

    OpenAIRE

    Tarvo Niine; Ott Koppel

    2015-01-01

    The field of logistics education is rather colorful. The range of possible topics is huge and so each curriculum has unique approach towards which topic areas to emphasize and which to treat briefly or even omit. There is only little effective standardization in logistics education. This study examines the content of 42 undergraduate logistics curricula in Europe via cluster analysis, with a goal to propose a typology of logistics curricula. The findings define the spectrum of logistics educa...

  8. Logistics aspects of petroleum pipeline operations

    Directory of Open Access Journals (Sweden)

    W. J. Pienaar

    2010-11-01

    Full Text Available The paper identifies, assesses and describes the logistics aspects of the commercial operation of petroleum pipelines. The nature of petroleum-product supply chains, in which pipelines play a role, is outlined and the types of petroleum pipeline systems are described. An outline is presented of the nature of the logistics activities of petroleum pipeline operations. The reasons for the cost efficiency of petroleum pipeline operations are given. The relative modal service effectiveness of petroleum pipeline transport, based on the most pertinent service performance measures, is offered. The segments in the petroleum-products supply chain where pipelines can play an efficient and effective role are identified.

  9. Education in logistics and training of non-logistic personnel

    Directory of Open Access Journals (Sweden)

    Marko D. Andrejić

    2011-01-01

    Full Text Available The significance of education in logistics and education and training of cadets who belong to non-logistic services (non-logistic personnel will be presented. The logistical aspects of education of non-logistic personnel are elaborated as well as the knowledge in the area of logistics which is necessary to be transferred through the educational process to non-logistic personnel for the successful accomplishment of their functional duties. A general approach and the methods of logistics education and improvement of non-logistic personnel are presented as well as the institutional prerequisites necessary for improving the quality of logistics education and training. The quality of the knowledge in this area and its implementation into the methods of thinking and decision making of non-logistic personnel affect the cooperation between the non-logistic and the logistic personnel, directly contributing to the quality of life and working conditions of units and institutions as well as to the quality and synergy in task accomplishments in the framework defined by the missions of the Army of Serbia. The necessary content and means of its transfer to cadets are discussed since they are supposed to be available at all levels and forms of education, depending on the previous cadet education levels. The theoretical bases and experiences shown are of general character and they have a universal application in the process of education. Introduction In our recent defense theory and operational practice, logistics education of non-logistic personnel is not sufficiently analyzed either in organizational or technological aspects, considering the concept and the logic of a systematic and a situational approach. The analysis of the experiences gained from operational practice shows a slight decrease in the quality of task accomplishment due to the lack of necessary logistic knowledge and habits as well as an increased communication gap between logistic and non-logistic

  10. EPRI depletion benchmark calculations using PARAGON

    International Nuclear Information System (INIS)

    Highlights: • PARAGON depletion calculations are benchmarked against the EPRI reactivity decrement experiments. • Benchmarks cover a wide range of enrichments, burnups, cooling times, and burnable absorbers, and different depletion and storage conditions. • Results from PARAGON-SCALE scheme are more conservative relative to the benchmark data. • ENDF/B-VII based data reduces the excess conservatism and brings the predictions closer to benchmark reactivity decrement values. - Abstract: In order to conservatively apply burnup credit in spent fuel pool criticality analyses, code validation for both fresh and used fuel is required. Fresh fuel validation is typically done by modeling experiments from the “International Handbook.” A depletion validation can determine a bias and bias uncertainty for the worth of the isotopes not found in the fresh fuel critical experiments. Westinghouse’s burnup credit methodology uses PARAGON™ (Westinghouse 2-D lattice physics code) and its 70-group cross-section library, which have been benchmarked, qualified, and licensed both as a standalone transport code and as a nuclear data source for core design simulations. A bias and bias uncertainty for the worth of depletion isotopes, however, are not available for PARAGON. Instead, the 5% decrement approach for depletion uncertainty is used, as set forth in the Kopp memo. Recently, EPRI developed a set of benchmarks based on a large set of power distribution measurements to ascertain reactivity biases. The depletion reactivity has been used to create 11 benchmark cases for 10, 20, 30, 40, 50, and 60 GWd/MTU and 3 cooling times 100 h, 5 years, and 15 years. These benchmark cases are analyzed with PARAGON and the SCALE package and sensitivity studies are performed using different cross-section libraries based on ENDF/B-VI.3 and ENDF/B-VII data to assess that the 5% decrement approach is conservative for determining depletion uncertainty

  11. The MCNP6 Analytic Criticality Benchmark Suite

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Forrest B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Monte Carlo Codes Group

    2016-06-16

    Analytical benchmarks provide an invaluable tool for verifying computer codes used to simulate neutron transport. Several collections of analytical benchmark problems [1-4] are used routinely in the verification of production Monte Carlo codes such as MCNP® [5,6]. Verification of a computer code is a necessary prerequisite to the more complex validation process. The verification process confirms that a code performs its intended functions correctly. The validation process involves determining the absolute accuracy of code results vs. nature. In typical validations, results are computed for a set of benchmark experiments using a particular methodology (code, cross-section data with uncertainties, and modeling) and compared to the measured results from the set of benchmark experiments. The validation process determines bias, bias uncertainty, and possibly additional margins. Verification is generally performed by the code developers, while validation is generally performed by code users for a particular application space. The VERIFICATION_KEFF suite of criticality problems [1,2] was originally a set of 75 criticality problems found in the literature for which exact analytical solutions are available. Even though the spatial and energy detail is necessarily limited in analytical benchmarks, typically to a few regions or energy groups, the exact solutions obtained can be used to verify that the basic algorithms, mathematics, and methods used in complex production codes perform correctly. The present work has focused on revisiting this benchmark suite. A thorough review of the problems resulted in discarding some of them as not suitable for MCNP benchmarking. For the remaining problems, many of them were reformulated to permit execution in either multigroup mode or in the normal continuous-energy mode for MCNP. Execution of the benchmarks in continuous-energy mode provides a significant advance to MCNP verification methods.

  12. A 3D stylized half-core CANDU benchmark problem

    International Nuclear Information System (INIS)

    A 3D stylized half-core Canadian deuterium uranium (CANDU) reactor benchmark problem is presented. The benchmark problem is comprised of a heterogeneous lattice of 37-element natural uranium fuel bundles, heavy water moderated, heavy water cooled, with adjuster rods included as reactivity control devices. Furthermore, a 2-group macroscopic cross section library has been developed for the problem to increase the utility of this benchmark for full-core deterministic transport methods development. Monte Carlo results are presented for the benchmark problem in cooled, checkerboard void, and full coolant void configurations.

  13. Diagnostic Algorithm Benchmarking

    Science.gov (United States)

    Poll, Scott

    2011-01-01

    A poster for the NASA Aviation Safety Program Annual Technical Meeting. It describes empirical benchmarking on diagnostic algorithms using data from the ADAPT Electrical Power System testbed and a diagnostic software framework.

  14. GeodeticBenchmark_GEOMON

    Data.gov (United States)

    Vermont Center for Geographic Information — The GeodeticBenchmark_GEOMON data layer consists of geodetic control monuments (points) that have a known position or spatial reference. The locations of these...

  15. Humanitarian logistics and sustainability

    CERN Document Server

    Leeuw, Sander; Regattieri, Alberto; Souza, Robert

    2015-01-01

    This contributed volume combines conceptual and strategic research articles dealing with the "why" and "to what end" of sustainable operations in humanitarian logistics, as well as operational research contributions regarding the "how" from the United Nations as well as from researchers and organizations from different countries (Germany, Australia, Singapore, Italy, Denmark, Jordan). The target audience primarily comprises research experts, decision makers  and practitioners in the field, but the book may also be beneficial for graduate students.

  16. Consolidation in Humanitarian Logistics

    OpenAIRE

    Vaillancourt, Alain

    2015-01-01

    Major disasters, conflicts and poverty afflict many millions of people around the world. To address the needs of these people, humanitarian organizations deploy a vast array of resources supported by material, financial and information flows. Some of these resources need efficient logistics support to achieve their goals and through vertical or horizontal coordination, humanitarian organisations can improve the way to respond to a situation. A specific approach to coordination is consolidatio...

  17. Sparse Bilinear Logistic Regression

    OpenAIRE

    Shi, Jianing V.; Xu, Yangyang; Baraniuk, Richard G.

    2014-01-01

    In this paper, we introduce the concept of sparse bilinear logistic regression for decision problems involving explanatory variables that are two-dimensional matrices. Such problems are common in computer vision, brain-computer interfaces, style/content factorization, and parallel factor analysis. The underlying optimization problem is bi-convex; we study its solution and develop an efficient algorithm based on block coordinate descent. We provide a theoretical guarantee for global convergenc...

  18. The optimal taxation of logistics industry in China

    Directory of Open Access Journals (Sweden)

    Wang Dongmei

    2014-05-01

    Full Text Available Purpose: Putting forward policy proposes to improve the tax policy of the logistics industry.Design/methodology/approach: Based on Cobb-Douglas production function model, combined theoretical analysis, this paper puts forward Cobb-Douglas production function expansion model, and using the function estimates the optimal tax burden level of China's logistics industry.Findings: The result of empirical analysis on the state-owned companies and the listed companies of transportation and storage industry show that, the actual tax burden of China's logistics industry is higher than the optimal taxation. This implies that tax problem has restricted the normal operation of the logistics industry in China.Research limitations/implications: Affected by lack of Chinese logistics industry statistics, we only estimate the optimal taxation of state-owned logistics enterprises and listed companies of logistics. But, the two samples are the main force of the logistics industry in China, and the optimal tax calculation result is close, so we can believe that the calculation results are representative.Originality/value: At present, the study of the tax burden on China's logistics industry is almost blank. This research estimates the optimal tax burden level of China's logistics industry, and puts forward recommendations to improve the tax policy of the logistics industry.

  19. Benchmarking in University Toolbox

    OpenAIRE

    Katarzyna Kuźmicz

    2015-01-01

    In the face of global competition and rising challenges that higher education institutions (HEIs) meet, it is imperative to increase innovativeness and efficiency of their management. Benchmarking can be the appropriate tool to search for a point of reference necessary to assess institution’s competitive position and learn from the best in order to improve. The primary purpose of the paper is to present in-depth analysis of benchmarking application in HEIs worldwide. The study involves indica...

  20. Accelerator shielding benchmark problems

    International Nuclear Information System (INIS)

    Accelerator shielding benchmark problems prepared by Working Group of Accelerator Shielding in the Research Committee on Radiation Behavior in the Atomic Energy Society of Japan were compiled by Radiation Safety Control Center of National Laboratory for High Energy Physics. Twenty-five accelerator shielding benchmark problems are presented for evaluating the calculational algorithm, the accuracy of computer codes and the nuclear data used in codes. (author)

  1. Benchmarking conflict resolution algorithms

    OpenAIRE

    Vanaret, Charlie; Gianazza, David; Durand, Nicolas; Gotteland, Jean-Baptiste

    2012-01-01

    Applying a benchmarking approach to conflict resolution problems is a hard task, as the analytical form of the constraints is not simple. This is especially the case when using realistic dynamics and models, considering accelerating aircraft that may follow flight paths that are not direct. Currently, there is a lack of common problems and data that would allow researchers to compare the performances of several conflict resolution algorithms. The present paper introduces a benchmarking approa...

  2. Benchmarking and regulation

    OpenAIRE

    Agrell, Per Joakim; Bogetoft, Peter

    2013-01-01

    Benchmarking methods, and in particular Data Envelopment Analysis (DEA), have become well-established and informative tools for economic regulation. DEA is now routinely used by European regulators to set reasonable revenue caps for energy transmission and distribution system operators. The application of benchmarking in regulation, however, requires specific steps in terms of data validation, model specification and outlier detection that are not systematically documented in open publication...

  3. Accelerator shielding benchmark problems

    Energy Technology Data Exchange (ETDEWEB)

    Hirayama, H.; Ban, S.; Nakamura, T. [and others

    1993-01-01

    Accelerator shielding benchmark problems prepared by Working Group of Accelerator Shielding in the Research Committee on Radiation Behavior in the Atomic Energy Society of Japan were compiled by Radiation Safety Control Center of National Laboratory for High Energy Physics. Twenty-five accelerator shielding benchmark problems are presented for evaluating the calculational algorithm, the accuracy of computer codes and the nuclear data used in codes. (author).

  4. Operating Analysis of the Closed Supply Chain of Green Agricultural Products Based on Logistics Center

    OpenAIRE

    Wang, Duo-hong; Li, Yu; Zhao, Hong-Xia; Zhang, Jiang-quan

    2010-01-01

    This thesis gives the overview of concept and constitution of the closed supply chain of green agricultural products on logistics center, and the necessity of regarding logistics center as core enterprises. Meanwhile, it analyzes the function of logistic center of agricultural products, namely functions of exchange, collection, distribution, storage and transportation. It also poses the prerequisites of logistics center. The logistics center of agricultural products must have stable profit ex...

  5. Pricing of logistics services - Case HUB logistics Oy

    OpenAIRE

    Kallio, Henri

    2010-01-01

    PRICING OF LOGISTICS SERVICES – Case HUB logistics Oy Research objectives The purpose of theoretical part of the study was to examine pricing from logistics point of view, related to principles of pricing and to pricing process. In addition, the objective was to examine possible factors affecting the price in logistics outsourcing relationship such as costs, risks, performance measurement, and service level agreements. The objective of empirical part of the study was to develop pricin...

  6. The KMAT: Benchmarking Knowledge Management.

    Science.gov (United States)

    de Jager, Martha

    Provides an overview of knowledge management and benchmarking, including the benefits and methods of benchmarking (e.g., competitive, cooperative, collaborative, and internal benchmarking). Arthur Andersen's KMAT (Knowledge Management Assessment Tool) is described. The KMAT is a collaborative benchmarking tool, designed to help organizations make…

  7. TH-E-BRE-01: A 3D Solver of Linear Boltzmann Transport Equation Based On a New Angular Discretization Method with Positivity for Photon Dose Calculation Benchmarked with Geant4

    International Nuclear Information System (INIS)

    Purpose: The Linear Boltzmann Transport Equation (LBTE) solved through statistical Monte Carlo (MC) method provides the accurate dose calculation in radiotherapy. This work is to investigate the alternative way for accurately solving LBTE using deterministic numerical method due to its possible advantage in computational speed from MC. Methods: Instead of using traditional spherical harmonics to approximate angular scattering kernel, our deterministic numerical method directly computes angular scattering weights, based on a new angular discretization method that utilizes linear finite element method on the local triangulation of unit angular sphere. As a Result, our angular discretization method has the unique advantage in positivity, i.e., to maintain all scattering weights nonnegative all the time, which is physically correct. Moreover, our method is local in angular space, and therefore handles the anisotropic scattering well, such as the forward-peaking scattering. To be compatible with image-guided radiotherapy, the spatial variables are discretized on the structured grid with the standard diamond scheme. After discretization, the improved sourceiteration method is utilized for solving the linear system without saving the linear system to memory. The accuracy of our 3D solver is validated using analytic solutions and benchmarked with Geant4, a popular MC solver. Results: The differences between Geant4 solutions and our solutions were less than 1.5% for various testing cases that mimic the practical cases. More details are available in the supporting document. Conclusion: We have developed a 3D LBTE solver based on a new angular discretization method that guarantees the positivity of scattering weights for physical correctness, and it has been benchmarked with Geant4 for photon dose calculation

  8. Sustainable Logistics Responses to a Global Challenge

    CERN Document Server

    Bretzke, Wolf-Rüdiger

    2013-01-01

    Currently the notion of "sustainability" is used in an inflationary manner. Therefore the authors start with a definition which is stable to serve as an anchor for further research as well as for discussions among scientists, managers and politicians, ideally across different disciplines. The character of this book is purely conceptual. The argumentation is based on comparison of new and demanding requisites with existing models (process and network architectures in the field of logistics). Formerly neglected impacts on the environment will be included. Main features of a new approach will be developed which are capable to avoid these impacts and to align logistics with the requirements of sustainability. In order to make logistics sustainable large parts will have to be reinvented. The focus needs to be on decoupling transportation activities from economic growth rates.

  9. Study on Location-transportation Optimization for Hazardous Material Logistics Network%危险化学品物流网络选址-运输优化研究

    Institute of Scientific and Technical Information of China (English)

    易玉枚; 廖可兵; 张佐钊; 彭辉冰

    2011-01-01

    In order to give proper attention to both economic and safety benefit, and to realize the mutual interaction between distribution center location and transportation routing selection of the hazardous material logistics-distribution and transportation network, an integrated location-routing model was built with consideration on the risk characteristic, time attribute, and changes of road conditions and surrounding environment with vehicle moving. After listing the assumptions for modeling, distribution center construction and operating cost, traffic cost, location risk, transportation risk and sensitive population risk were taken as the optimal objects. Expert evaluation method was applied to determine targets weight which translates the multi-objective programming question into single target decision-making question. According to the model, a heuristic algorithm based on greedy was developed. The optimized location-transportation network may reduce the accident rate and personnel casualty risk, optimize the conflict between risks of staff and cost, and realize the optimal network layout and routing.%为兼顾经济与安全效益,实现危险化学品物流配送中心选址与运输路径选择的联合互动,建立综合选址-选线模型.该模型考虑危险化学品的风险特性、时间属性、路线路面状况及沿线周围环境随车辆移动的变化,以配送中心建设运行费用、运输费用、选址风险、运输风险和敏感目标人数为优化目标.采用专家打分法对各子目标权重进行打分,将多目标规划问题转化为单目标决策问题来求解,并根据模型给出一种启发武算法.网络选址-运输优化可降低危险化学品物流事故率和沿线人员伤亡风险,优化影响人员风险与物流成本冲突问题,实现最佳网点布局及路径选择.

  10. APPLICATION OF CONTROLLING IN LOGISTIC SYSTEMS OF COMPANIES

    Directory of Open Access Journals (Sweden)

    Miroshnichenko M. A.

    2015-04-01

    Full Text Available In the article methodological and practical basics of development and deployment of controlling in logistic systems are covered. The main objectives and instruments of controlling of logistics in activities of the organization are opened. The example of use of controlling in logistic systems is given. The main task of controlling in logistic systems consists in realization of an operating control behind profitability and the best passing of processes of warehousing and transportation material and transfers of non-material resources of the organization

  11. Reactor group constants and benchmark test

    International Nuclear Information System (INIS)

    The evaluated nuclear data files such as JENDL, ENDF/B-VI and JEF-2 are validated by analyzing critical mock-up experiments for various type reactors and assessing applicability for nuclear characteristics such as criticality, reaction rates, reactivities, etc. This is called Benchmark Testing. In the nuclear calculations, the diffusion and transport codes use the group constant library which is generated by processing the nuclear data files. In this paper, the calculation methods of the reactor group constants and benchmark test are described. Finally, a new group constants scheme is proposed. (author)

  12. Shielding integral benchmark archive and database

    International Nuclear Information System (INIS)

    SINBAD (Shielding integral benchmark archive and database) is a new electronic database developed to store a variety of radiation shielding benchmark data so that users can easily and incorporate the data into their calculations. SINBAD is an excellent data source for users who require the quality assurance necessary in developing cross-section libraries or radiation transport codes. The future needs of the scientific community are best served by the electronic database format of SINBAD and its user-friendly interface, combined with its data accuracy and integrity. It has been designed to be able to include data from nuclear reactor shielding, fusion blankets and accelerator shielding experiments. (authors)

  13. Standard Guide for Benchmark Testing of Light Water Reactor Calculations

    CERN Document Server

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 This guide covers general approaches for benchmarking neutron transport calculations in light water reactor systems. A companion guide (Guide E2005) covers use of benchmark fields for testing neutron transport calculations and cross sections in well controlled environments. This guide covers experimental benchmarking of neutron fluence calculations (or calculations of other exposure parameters such as dpa) in more complex geometries relevant to reactor surveillance. Particular sections of the guide discuss: the use of well-characterized benchmark neutron fields to provide an indication of the accuracy of the calculational methods and nuclear data when applied to typical cases; and the use of plant specific measurements to indicate bias in individual plant calculations. Use of these two benchmark techniques will serve to limit plant-specific calculational uncertainty, and, when combined with analytical uncertainty estimates for the calculations, will provide uncertainty estimates for reactor fluences with ...

  14. On the interest of introducing performance indicators in the local urban transport in France: a proposal for a European benchmarking analysis

    OpenAIRE

    Moudjed, Mounia

    2007-01-01

    In Europe, interesting European experiences in the field of production of indicators in order tomeasure the performance (as efficiency) of the public transport exists. This paper analyses five European cases: England, France, Norway, Sweden, and Italy. Those countries have more or less recent institutional changes : the criteria of performance seems to be more and more taken into account in those institutional changes, in particular because of the competition (but not only). Different actors ...

  15. Benchmarking in Mobarakeh Steel Company

    OpenAIRE

    Sasan Ghasemi; Mohammad Nazemi; Mehran Nejati

    2008-01-01

    Benchmarking is considered as one of the most effective ways of improving performance in companies. Although benchmarking in business organizations is a relatively new concept and practice, it has rapidly gained acceptance worldwide. This paper introduces the benchmarking project conducted in Esfahan's Mobarakeh Steel Company, as the first systematic benchmarking project conducted in Iran. It aims to share the process deployed for the benchmarking project in this company and illustrate how th...

  16. Information Support of Processes in Warehouse Logistics

    Directory of Open Access Journals (Sweden)

    Gordei Kirill

    2013-11-01

    Full Text Available In the conditions of globalization and the world economic communications, the role of information support of business processes increases in various branches and fields of activity. There is not an exception for the warehouse activity. Such information support is realized in warehouse logistic systems. In relation to territorial administratively education, the warehouse logistic system gets a format of difficult social and economic structure which controls the economic streams covering the intermediary, trade and transport organizations and the enterprises of other branches and spheres. Spatial movement of inventory items makes new demands to participants of merchandising. Warehousing (in the meaning – storage – is one of the operations entering into logistic activity, on the organization of a material stream, as a requirement. Therefore, warehousing as "management of spatial movement of stocks" – is justified. Warehousing, in such understanding, tries to get rid of the perception as to containing stocks – a business expensive. This aspiration finds reflection in the logistic systems working by the principle: "just in time", "economical production" and others. Therefore, the role of warehouses as places of storage is transformed to understanding of warehousing as an innovative logistic system.

  17. A Study on Reverse Logistics

    OpenAIRE

    Reddy, Dhananjaya

    2011-01-01

    In the competitive world of manufacturing, companies are often searching for new ways to improve their process, customer satisfaction and stay ahead in the game with their competitors. Reverse logistics has been considered a strategy to bring these things to life for the past decade or so. This thesis work tries to shed some light on the basics of reverse logistics and how reverse logistics can be used as a management strategy. This paper points out the fundamentals of reverse logistics and l...

  18. LOGISTICS IN KNOWLEDGE BASED ECONOMY

    OpenAIRE

    Stefan NEDELEA

    2013-01-01

    In the context of contemporary economy logistics changes refer to the emergence of new inter-organizational logistics structures such as logistics networks, and to a number of alterations in organizations’ vision and conduct regarding the role and importance of knowledge. The research focuses on identifying the instruments promoting inter-organizational knowledge transfer within logistics networks provided that each organization relies on its own knowledge and organizational skills to ensure ...

  19. Control Systems for Logistics Performance

    OpenAIRE

    Virolainen, V.-M.

    1991-01-01

    This text is concerned with identifying and outlining the various aspects of logistics control and performance measurement process. The objective is to identify, based on available literature, methods and techniques which can be used to measure the performance of logistics. Logistics management is essentially a task of balancing between minimizing cost and ensuring availability objectives. Availability can be seen as the output of logistics system. On the input side, management is concer...

  20. Benchmarking the Netherlands. Benchmarking for growth

    International Nuclear Information System (INIS)

    This is the fourth edition of the Ministry of Economic Affairs' publication 'Benchmarking the Netherlands', which aims to assess the competitiveness of the Dutch economy. The methodology and objective of the benchmarking remain the same. The basic conditions for economic activity (institutions, regulation, etc.) in a number of benchmark countries are compared in order to learn from the solutions found by other countries for common economic problems. This publication is devoted entirely to the potential output of the Dutch economy. In other words, its ability to achieve sustainable growth and create work over a longer period without capacity becoming an obstacle. This is important because economic growth is needed to increase prosperity in the broad sense and meeting social needs. Prosperity in both a material (per capita GDP) and immaterial (living environment, environment, health, etc) sense, in other words. The economy's potential output is determined by two structural factors: the growth of potential employment and the structural increase in labour productivity. Analysis by the Netherlands Bureau for Economic Policy Analysis (CPB) shows that in recent years the increase in the capacity for economic growth has been realised mainly by increasing the supply of labour and reducing the equilibrium unemployment rate. In view of the ageing of the population in the coming years and decades the supply of labour is unlikely to continue growing at the pace we have become accustomed to in recent years. According to a number of recent studies, to achieve a respectable rate of sustainable economic growth the aim will therefore have to be to increase labour productivity. To realise this we have to focus on for six pillars of economic policy: (1) human capital, (2) functioning of markets, (3) entrepreneurship, (4) spatial planning, (5) innovation, and (6) sustainability. These six pillars determine the course for economic policy aiming at higher productivity growth. Throughout