作者: Lament 時間: 2025-3-21 23:17 作者: 公社 時間: 2025-3-22 01:36 作者: 話 時間: 2025-3-22 06:34 作者: Vulnerable 時間: 2025-3-22 11:43
https://doi.org/10.1057/9780230500204atical programming component of TRACS II to allow different solution methods to be used where necessary, and to solve larger problems in a single pass, as well as to produce better solutions. Comparative results on real-world problems are presented.作者: artless 時間: 2025-3-22 13:28
https://doi.org/10.1007/978-981-15-6537-3 of Bundle methods for polyhedral functions and algorithms for constrained shortest paths and assignment within a dual greedy heuristic procedure for the set partitioning problem. Computational results are provided for Italian public transit operators, which show some improvements over the results of the sequential approach.作者: artless 時間: 2025-3-22 17:33
https://doi.org/10.1007/978-94-011-5066-8eduling processes are clear to understand and easy to extend. BOOST features a Windows- based graphical user interface (GUI). The styles of data management and interactive schedule manipulation utilities are described. Results of testing BOOST against the conventional BUSPLAN and recent practical applications of BOOST are reported.作者: Hemodialysis 時間: 2025-3-22 23:36
https://doi.org/10.1007/978-3-030-56499-5e train requirements could be satisfied for a one-week planning problem involving 1988 train segments. When the train requirements are satisfied, the cost penalties associated with undercovering are significantly reduced, and consequently, the integrality gap is decreased. In our numerical experiments, this gap decreases by 2% on average.作者: 凹槽 時間: 2025-3-23 01:29
Crew Pairing for a Regional Carrier the leg-on-arc representation is substantially more efficient. In addition, we study the cost impact of three changes in the operating scenario. Finally, we illustrate how bounded perturbation variables virtually eliminate degeneracy, hence significantly decreasing CPU time.作者: Blood-Clot 時間: 2025-3-23 06:55
An Improved ILP System for Driver Schedulingatical programming component of TRACS II to allow different solution methods to be used where necessary, and to solve larger problems in a single pass, as well as to produce better solutions. Comparative results on real-world problems are presented.作者: Consequence 時間: 2025-3-23 13:15 作者: 人工制品 時間: 2025-3-23 14:40 作者: 細(xì)胞膜 時間: 2025-3-23 21:34 作者: Irrigate 時間: 2025-3-24 01:47
0075-8442 o systems world-wide.The Reader will be able to appreciate tThis proceedings volume consists of papers presented at the Seventh International Workshop on Computer-Aided Scheduling of Pllblic Transport, which was held at th th the Massachusetts Institute of Technology from August 5 to 8 , 1997. In th作者: anagen 時間: 2025-3-24 04:02
An Exact Branch and Cut Algorithm for the Vehicle and Crew Scheduling Problemous relaxation which is embedded in a branch and bound approach to generate an exact solution for the problem. To improve the lower bounds, polyhedral cuts basing on clique detection and a variant of the column generation algorithm that suits the cuts were tested.作者: 過剩 時間: 2025-3-24 08:08
Solving Large-Scale Multiple-Depot Vehicle Scheduling Problemse instances have up to 25,000 timetabled trips and 70 million integer decision variables. Compared to the results obtained with one of the best planning system currently available in practice, our test runs indicate savings of several vehicles and a cost reduction of about 10%.作者: 小卒 時間: 2025-3-24 10:45 作者: Canopy 時間: 2025-3-24 18:26
https://doi.org/10.1057/9780230500204he operational/regulation constraints involved. This paper describes the development of a new crew planning system set up by Ferrovie dello Stato SpA (the Italian railway company) in co-operation with the University of Bologna.作者: dendrites 時間: 2025-3-24 20:52 作者: KEGEL 時間: 2025-3-25 01:42
Claire Arnold-Baker,Victoria Garland applying the resulting controls. We show that the great majority of benefits can be realized by applying only limited control actions on a small set of trains. Our formulations determine optimal control strategies, typically in less than 30 seconds.作者: 使人入神 時間: 2025-3-25 05:46 作者: ACRID 時間: 2025-3-25 09:18
Solution of Large-Scale Railway Crew Planning Problems: the Italian Experiencehe operational/regulation constraints involved. This paper describes the development of a new crew planning system set up by Ferrovie dello Stato SpA (the Italian railway company) in co-operation with the University of Bologna.作者: Entropion 時間: 2025-3-25 12:14
Exact Algorithms for the Multi-Depot Vehicle Scheduling Problem Based on Multicommodity Network Flowcommodity network flow formulation, in the sense that it contains just one type of variable and fewer constraints than the previous model. Computational experience is presented to compare the two algorithms.作者: 參考書目 時間: 2025-3-25 16:07 作者: 錯 時間: 2025-3-25 23:22
Knowledge-Based Decision Support System for Real-Time Train Traffic Controlof relevant information, prediction of certain dispatching measures’ impacts, and proposals for appropriate dispatching actions. Thus, the decision support system should significantly improve traffic performance, reliability, and customer satisfaction.作者: 孵卵器 時間: 2025-3-26 00:58
Conference proceedings 1999s held at th th the Massachusetts Institute of Technology from August 5 to 8 , 1997. In the tradition of alternating Workshops between North American and Europe - Chicago (1975), Leeds (1980), Montreal (1983), Hamburg (1986), Montreal (1990), and Lisbon (1993), Cambridge (Massachusetts, USA) was sel作者: dermatomyositis 時間: 2025-3-26 07:24
Solution of Large-Scale Railway Crew Planning Problems: the Italian Experiencetions have also come on the scene. This is especially true in Europe, where deregulation and privatization edicts are forcing a re-organization of the rail industry and better productivity and more efficient services are strongly required by the market and the public. Therefore, this sector is showi作者: In-Situ 時間: 2025-3-26 09:41 作者: incontinence 時間: 2025-3-26 14:22
An Improved ILP System for Driver Schedulingoblem. However the problem frequently is too large for mathematical programming to be able to guarantee an optimal schedule. TRACS II, developed at the University of Leeds, is one such mathematical programming-based scheduling system. Several improvements and alternative solution methods have now be作者: 開始發(fā)作 時間: 2025-3-26 18:03
An Exact Branch and Cut Algorithm for the Vehicle and Crew Scheduling Problemng that cover a great variety of real world aspects, including constraints for crews resulting from wage agreements and company regulations. The main part of the model consists of a set partitioning formulation to cover each trip. A column generation algorithm is implemented to calculate the continu作者: obscurity 時間: 2025-3-26 22:36 作者: Trypsin 時間: 2025-3-27 02:19
An Integrated Approach to Ex-Urban Crew and Vehicle Schedulingparticular settings such as the ex-urban mass transit, where crews are tightly dependent on vehicles’ activity or crews’ dead-headings are highly constrained. In this paper we propose an integrated approach to vehicle and crew scheduling which exploits the network structure of the problem. A heurist作者: 犬儒主義者 時間: 2025-3-27 06:08
Producing Train Driver Schedules Under Differing Operating Strategieshave efficient operating schedules. Manpower costs are a significant element in any transport organization, and the ability to minimize these is seen as crucial to the effective running of these companies. In addition, the need to try out different operating strategies is gaining in importance as th作者: 脫毛 時間: 2025-3-27 09:40
Integrated Scheduling of Buses and Drivers, and franchised out to several private companies for operation. The nature of the scheduling problem is different from most of those described at previous workshops, because vehicle and driver schedules are developed simultaneously, but on a line by line basis. The present paper describes work carr作者: Expand 時間: 2025-3-27 15:07
Object Oriented Bus Vehicle Scheduling — the BOOST Systemon, extensibility and reusability. The VAMPIRES algorithm, originated in the 1960s for scheduling train locomotives and later formed the basis of the BUSPLAN system within the BUSMAN package, has been updated using the object-oriented approach and used as the core scheduling algorithm in BOOST. In t作者: STAT 時間: 2025-3-27 19:42 作者: 不持續(xù)就爆 時間: 2025-3-27 22:54 作者: 使糾纏 時間: 2025-3-28 02:09
Timetable Synchronization for Buses maximize the number of simultaneous arrivals of buses at the connection nodes (transfer nodes) of the network. The data for the problem are as follows: a bus route network, including connection nodes of the bus routes; the number of bus departures for every bus route in the network, during a given 作者: 商品 時間: 2025-3-28 10:10 作者: biosphere 時間: 2025-3-28 12:37 作者: 瑣碎 時間: 2025-3-28 18:00 作者: doxazosin 時間: 2025-3-28 22:47 作者: occurrence 時間: 2025-3-29 01:05 作者: 鄙視 時間: 2025-3-29 03:38 作者: notice 時間: 2025-3-29 08:27 作者: 鋼筆尖 時間: 2025-3-29 13:45
0075-8442 lication areas in which extensive work is also underway, and that it is vital to learn from these other initiatives. Second, while scheduling is indeed a core problem in public transport planning, and has shown978-3-540-65775-0978-3-642-85970-0Series ISSN 0075-8442 Series E-ISSN 2196-9957 作者: 和藹 時間: 2025-3-29 18:53
Driver Scheduling Using Genetic Algorithms with Embedded Combinatorial Traitsver scheduling. The continuous solution consists of a relatively small set of shifts, which usually contains a high proportion of the shifts in the integer solution obtained. The aim is to derive a GA to evolve from the non-integer solution to yield some elite schedules for further exploitation of c作者: 影響深遠(yuǎn) 時間: 2025-3-29 20:04
Producing Train Driver Schedules Under Differing Operating Strategiesifferent operating strategies has been established. This has enabled the development of new software tools and indicated new areas where further research could be useful..The driver schedules produced for the train companies have shown savings in manpower requirements over those currently in operati作者: RLS898 時間: 2025-3-29 23:59 作者: MOT 時間: 2025-3-30 07:00 作者: 小臼 時間: 2025-3-30 10:17
Modeling Real-Time Control Strategies In Public Transit Operationsrol models are generally quite effective. The algorithms are also tested in situations where there are significant stochastic disturbances. Under stochastic conditions model performance is found to decline only moderately.作者: milligram 時間: 2025-3-30 13:15
Requirement for, and Design of, an Operations Control System for Railwaysation. Besides the scheduled state of a transportation system, our model also covers the actual (until now) and expected (in the future) states. The decision support system automatically recognizes conflict situations, such as missed passenger connections due to trains being delayed. What-if analyse作者: Irritate 時間: 2025-3-30 19:30
Telebus Berlin: Vehicle Scheduling in a Dial-a-Ride Systemoblem of selecting a set of orders such that the traveling distance of the vehicles within the orders is minimal is a set partitioning problem that can be solved to optimality. In the second step the selected orders are . to yield possible bus tours respecting all side constraints. The problem to se作者: 招惹 時間: 2025-3-30 22:05 作者: 殺子女者 時間: 2025-3-31 03:28
Assessing Propositions One and Twover scheduling. The continuous solution consists of a relatively small set of shifts, which usually contains a high proportion of the shifts in the integer solution obtained. The aim is to derive a GA to evolve from the non-integer solution to yield some elite schedules for further exploitation of c作者: Counteract 時間: 2025-3-31 06:30
https://doi.org/10.1007/978-981-15-6537-3ifferent operating strategies has been established. This has enabled the development of new software tools and indicated new areas where further research could be useful..The driver schedules produced for the train companies have shown savings in manpower requirements over those currently in operati作者: 赦免 時間: 2025-3-31 10:28
Perspectives and Partial Truths,to improve efficiency. Already savings have been indicated. The paper includes a detailed exposition of the processes used in one of the cities, serving to emphasize the practical problems which must be addressed in any implementation.作者: 改良 時間: 2025-3-31 14:23
https://doi.org/10.1007/978-94-009-6315-3ransportation designers, taking into account the satisfaction and convenience of the system’s users. In this work, the problem is formulated as a mixed integer programming problem, and a heuristic algorithm is developed to solve the problem in polynomial time.作者: Electrolysis 時間: 2025-3-31 20:21 作者: ironic 時間: 2025-4-1 00:07 作者: vasospasm 時間: 2025-4-1 03:13
https://doi.org/10.1007/978-3-031-05095-4oblem of selecting a set of orders such that the traveling distance of the vehicles within the orders is minimal is a set partitioning problem that can be solved to optimality. In the second step the selected orders are . to yield possible bus tours respecting all side constraints. The problem to se作者: 卡死偷電 時間: 2025-4-1 08:15
Nigel H. M. WilsonDeals with recent developments in computer-based methods for scheduling in public transport systems, including both theory and application to systems world-wide.The Reader will be able to appreciate t
