Operations Research Journal

In: Business and Management

Submitted By agnivasaha
Words 6029
Pages 25
Journal of the Eastern Asia Society for Transportation Studies, Vol. 6, pp. 1426 - 1438, 2005

A SHORTEST PATH ALGORITHM FOR REAL ROAD NETWORK BASED ON PATH OVERLAP Yongtaek LIM Assistant Professor Division of Transportation and Logistics System Engineering Yosu National University San 96-1, Dundeok-dong, Yosu city Chunnam, 550-749, KOREA Fax:+82-061-659-3340 E-mail:limyt@yosu.ac.kr Hyunmyung KIM PhD Student Department of Civil Engineering Institute of Transportation Studies University of California, Irvine USA Fax: (949) 824-8385 E-mail: hyunmyuk@uci.edu

Abstract : Existing k-shortest path algorithms has some weaknesses such as path similarity among determined paths and network expansion for describing turn prohibitions. Path similarity represents that many of the alternative paths derived from the k-shortest path algorithm are likely to share a lots of links, so they could not represent heterogeneity. The turning restrictions popularly adopted in real road may violate Bellman’s principle of optimality in searching shortest path, so network expansion technique is widely used to avoid such difficulty. But, this method needs additional works to expand the network. This paper proposes a link-based shortest path algorithm to generate dissimilar paths for the travel information in real road network where exists turn prohibitions. The main merit of proposed model is to provide efficient alternative paths under consideration of overlaps among paths to alleviate the path similarity. Another merit is that it does not require extra nodes and links for expanding the network. Thus it is possible to save the time of network modification and of computer running. The algorithm is tested with some example networks and then will be expanded to a dynamic case. Key Words : dissimilar path, path overlap, turn prohibition, link-based algorithm, k-shortest path

1. INTRODUCTION A…...

Similar Documents

Operation Research

...Cases in Operation Management Semester 4 PGDBA (Operations) Page 1 Question-: 1 The “Quality Auto Works” is a manufacturer of auto parts. All the auto parts being manufactured in the industry are required to be phosphated for surface protection. Presently other small units are done this phosphated work. Quality Auto Work is now thinking of installing its own phosphating plant and is interested about knowing about following. (A) Should the install new plant or continue the present practice of subcontracting? For finding out whether the firm should do the phosphating work by own or it should contract other for the some one, we have to compare both the cost which are as follows. Annual Cost of subcontracting Cost of purchase =6.25x12000x12 =9, 00,000/- Cost of Transportation Total Cost =1800x12=21600/- =9, 21,600 Annual cost for installing own phosphating plant: Installation cost of plant: 2, 80,000x0.2452= 68,656/- Labor cost Benefit to labor Power Raw material : 8000x12 = : 96000x40/100 = : 12,000x0.23x12 = : 12000x0.45x12 = 96,000/- 38,400/- 33,120/- 64,800/- Total cost of installing = 3, 00,976...

Words: 826 - Pages: 4

Toyota Motor Company Operation/Quality Research Report

...Running head: TOYOTA MOTOR COMPANY OPERATIONS/QUALITY RESEARCH REPORT 1 Toyota Motor Company Operations/Quality Research Report TOYOTA MOTOR COMPANY OPERATIONS/QUALITY RESEARCH REPORT 3 Table of Contents Abstract 2 Introduction-Company History 4 Company’s Orientation 5-6 Operations Management 7-9 Lean Systems 9-12 Managing Quality 12-14 Improvements in Quality 14-15 References 16 TOYOTA MOTOR COMPANY OPERATIONS/QUALITY RESEARCH REPORT 2 Abstract Toyota Motor Company is the number one car manufacturer in the world today. They were founded by Sakichi Toyoda, some three quarters of a century ago in Japan. Through the years Toyota Motor Company has seen major growth throughout their hierarchy. Toyota’s growth can be attributed to Toyota’s company orientation and that is recognizing the consumers’ demands, having the right products in place to meet these demands. Throughout the years Toyota Total Quality Management (TQM) was the strength of Toyota year after year winning quality awards. Along with quality, Toyota pioneered their own lean system called Toyota Production System (TPS) which identifies and reduces/eliminates waste and variance in processes. Managing product quality was Toyota Motor Company’s claim to gaining market share over the U.S. car manufactures’ but recently the...

Words: 3589 - Pages: 15

Advance Operation Research

...Advance Operation Research Assignment Multi Period Optimization Models In Airline Overbooking 1/31/2012 Submitted by: 1) Alka Tripathy (06) 2) Anil Pooniya (11) 3) Arunima Singh (18) 4) Ashutosh Tripathi (23) 5) Ashwin Salpekar (24) The overbooking model considers the lost revenue due to cancellations and no-shows that will result in flying with empty seats, and the loss of good will and compensation cost due to excess number of show-ups than the available capacity. The overbooking problem is generally classified as static and dynamic based on the assumptions. Though the dynamic overbooking problem treats the overbooking problem in its realistic nature by taking into consideration the dynamic nature of cancellation over a period of time, it is not used by many airlines due to its mathematical intractability for a real world data. The static overbooking, which many airline use, simplifies the nature of the problem to make it mathematically tractable for real world data and daily use. However, many of the static overbooking models are modeled for a single class problem and did not include the loss of good will cost, and uses simplified form of the compensation cost in the development of the model. Furthermore, the commercial RM models are constructed based on the assumption that the demand distribution is simply the product of the show-up rate and Overbooking limit, which is not the case when evaluated both on a theoretical and practical...

Words: 2617 - Pages: 11

Operation , Research Paper

... total operating cost. Therefore in many countries, the central air conditioning system in which chillers play an important role is widely used. After the designing engineer completes his/her total cooling load calculation and water distribution design. He/she then has to decide and select the size and number of equipment used in the cooling system. It is found that the chiller is the main equipment that has large influent in the investment and operating cost. Concept on sizing and determining the number of chiller is varied according to the cooling load profile in which at present there is no solid methodology that can support such a concept. The objective of this research is, therefore, to set up some guidance for sizing and determining the number of chiller for the central air conditioning system by including also the water pump and the cooling tower into consideration. Several working conditions of each equipment have been studied in order to gather data for creating the mathematical simulation. Several cooling load profiles have been compared with several chiller configurations. Economics analysis has been included into consideration by concentrate mainly on the first cost and operating cost. The operating cost is varied directly to the function of the building and also related to the working percentage of chiller when compared with full load condition. This comparison procedure involves several complicated calculations and very time consuming. Therefore a computer......

Words: 3890 - Pages: 16

Operation Research Project

...Comprehensive assignment for Operations Research Course PGCBM21 Submitted by: Chetan Eklaspur Batch: PGCBM21 SMSID: 110337 Submitted to: Dr Supriya kumar De Study Center: Kormangala Bangalore. Problem: The problem below depicts one of the situations which we face in our Business and I have tried to apply and solve the same using LPP method to find the optimum solution and use it to make decisions. Mr Basavraj runs a wholesale tea powder business under the name of “Eklaspur Tea Depot”. Over the years he has been selling different brands of tea powders and acts as wholesaler or stockiest for those brands. “Eklaspur Tea Depot” is established as a major wholesaler in the area and has a good client base in the form of retailers and Kirana shop owner in the area. Recently due to lot of competition and rising prices there have been requests from few of the clients and some of the new client for a reduction in the prices or cheaper products, these clients are ready to compromise on the quality if the prices are reduced. So having discussed this with some of its client Mr Basavraj wants to start his own brand of Tea powder mixture under the name “Star teas” with Premium and Deluxe quality. The new Brand will be priced lower than the current Brands to meet the requirements of these clients. Mr Basavraj Forecasts that there will be demand for Premium and Deluxe to be 50 and 90 bags respectively of 35kg each...

Words: 1012 - Pages: 5

Operations Research Journal

... routes for drivers. Secondly, the algorithm generates dissimilar paths so that it could alleviate the problem of IIA (Independence of Irrelevant Alternatives) in logit-type stochastic assignment. Lastly, it can be also used for solving easily multi-mode traffic assignment, which should consider transfer behaviors of users. REFERENCES a) Books and Books chapters Ahuja,R.K., T.L. Magnanti, J.B. Orlin(1993) Network Flows: Theory, Algorithms and Applications, Prentice Hall Bellman,R.E.(1957) Dynamic programming, Princeton University Press, Princeton Potts,R.B., R.M. Oliver(1972) Flows in transportation networks, Academic press b) Journal papers Akgun,A.,Erkut,E.,Batta,R. (2000) On finding dissimilar paths, European Journal of Operational Research 121, 232-246 Caldwell,T.(1961) On finding minimum routes in a network with turn penalties, Commum, ACM4, 107-108 Dijkstra, E. W.(1959) “A note on two problems in connection with graphs”, Numer.Math.1, 269-271 Jayakrishnan,R.,W.K.Tsai, A.Chen (1995) A dynamic traffic assignment model with traffic-flow relationships, Transportation Research (C), Vol3, 51-72 Kim,I.(1998) Development of a modified vine building shortest path algorithm for ATIS, Journal of Korean society of transportation, Vol.16, No.2, 157-167 Shier, R.D.(1979) On algorithms from finding the k shortest paths in a network, Networks, V ol.9, 195-214 Yen J.Y.(1971) Finding the K shortest loopless paths in a network, Management Science, Vo l 17, No. 11, 712-716...

Words: 6029 - Pages: 25

Operation Research & Methods

... an integer programming formulation. Notice that this type of problems is not easy to solve, because of the variety of reallife situations (time-windows for the delivery, accessibility constraints, rest time, capacity of the truck (weight and volume), …) [32]. 5 Conclusion We have shown how the complete production process can be defined as a production planning decision hierarchy, including an integrated production management, which can be decomposed into several modules. Then we have shown that some OR models and methods can be applied to each module. A good survey of the applications of Operational Research models and techniques in flexible manufacturing systems is presented by Kusiak [33], in a special issue of the European Journal of Operational Research dedicated to the FMSs. To conclude this chapter, we think that two topics could provide some interesting research fields : • the product design • the shop floor control. 12 For this last point, it will be important to develop several dynamic algorithms, to react quickly to the behaviour of the manufacturing system. 6 Bibliography [1] [2] [3] [4] [5] [6] [7] [8] [9] R. Chase, N. Aquilano : Production and Operations Management : A Life Cycle Approach. Irwin 1989 J. Dilworth : Operations Management : Design, Planning, and Control for Manufacturing and Services. McGraw-Hill 1992 N. Gaither : Production and Operation Management. The Dryden Press 1992 J .Heizer, B. Render : Production and Operation Management...

Words: 5165 - Pages: 21

International Journal of Financial Research

...www.sciedu.ca/ijfr International Journal of Financial Research Vol. 3, No. 3; July 2012 The Strategic Transformation of Automobile Industry in China Som Techakanjanakit School of Management, Wuhan University of Technology 122 Luoshi Road, Hongshan District, Wuhan 430070, Hubei, China Tel: 86-186-7239-9237 E-mail: som7125@hotmail.com Meifang Huang (Corresponding author) School of Economics, Wuhan University of Technology 122 Luoshi Road, Hongshan District, Wuhan 430070, Hubei, China Tel: 86-186-7239-9537 Received: May 28, 2012 doi:10.5430/ijfr.v3n3p8 Abstract In the past few years, the global automobile industry is developing difficultly because of the influence from the financial crisis. In contrast, China's automobile production and sales are still having a blowout type growth, and jumped into the world's largest automobile production and sales market. At the same time, Chinese automobile companies continue to deepen and join with international brand cooperation; independent research and development of the independent brand production, and their technical also get greatly strengthened. Similarly, in the tide of industrial upgrading and international acquisitions, strategic transformation era of Chinese automobile industry has gradually started. This paper based on the world economic crisis brought both challenge and opportunity to the automobile industry in China, comprehensively analysis China's automobile industry development present situation and development...

Words: 5828 - Pages: 24

Assignment @ Operation Research

...ASSIGNMENT ON OPERATION RESEARCH ( FIN – 3104 ) 3RD YEAR , 1ST SEMESTER BBA – 3RD BATCH DEPARTMENT OF FINANCE JAGANNATH UNIVERSITY TOPIC Quantitative Analysis for Optimization : Using Linear Programming & Transportation Problem Group Name Name & ID No. of the Group Members: |Sl. No. |Name |ID No. | | | | | |01 |Suman Chandra Mandal (Group Leader) |091557 | | |Md. Nahid Islam |091604 | |02 | | | | | | | |03 |Mahbuba Mehreen |091619...

Words: 1940 - Pages: 8

Operation Research Development

...Operations Research OR - Development of OR - England , world war  → determining the last utilization of limited resources - USA → 1947 → simplex method - Development → computer science - OR models mathematical model → variables, Function Optimal solution according to different techniques Simulated model → study for a specific system at Certain time period and simulate this system Heuristic model → empirical rules to find Approximate solution from point to another in the System Mathematical Model 1- Decision variables and parameters unknown values we need to solve equations to get these values EX: parameter → determine system We need to determine level of production for a specific good based on raw material, machine capacity Unknown parameter→ level of production, Unknown variable → number of units produced 2- Constraints or restrictions → row material 3- Objective function → EX: profit function maximization cost function Minimization EX: production planning machine 1 2 3 Profit/unit Time per unit (minutes) Machine Product1 product2 product3 capacity 1 2 1 430 3 0 2 460 1 4 0 420 3 2 5  OR mathematical model X1 → amount product1 X2 → amount product2 X3 → amount product3 Profit function: Constraints 1x1 + 2x2 + 1x3 ≤ 430 3x1 + 0x2 + 2x3 ≤ 460 1x1 + 4x2 + 0x3 ≤ 420 Additional non negativity constraints x1 ≥ 0 , x2 ≥ 0 , x3 ≥ 0 We are looking for optimum sol for x1 , x2 , x3 to maximize objective function subject to constraints Introduction to optimization...

Words: 1272 - Pages: 6

Ymca Research Journal

...Marketing Research Journal for YMCA Jonathan Lewis nathanolewis@gmail.com Abstract YMCA as commonly known is the acronym for Young Men Christian Association. This nonprofit organization is a worldwide organization in with more than 57 million beneficiaries all over the world. As the marketing manager, the purpose of this research journal to evaluate the internal and external marketing environments of the organization, this will give us a broader perspective into the success of the organization and the next level of growth for the organization. Although this is a nonprofit organization, but like for profit organization, there are different marketing factors and strategies such as the competitive environment, target audience, and many more that contributes to the success of the business. The observations and findings in this journal will be the groundwork upon with the business manager’s plan for this organization will be built. Keywords: competitive environment, target market, stakeholders, marketing mix, value proposition Introduction to YMCA Young Men's Christian Association is commonly known as YMCA or simply the Y. The organization comprises of over 125 national associations worldwide with more than 57 million beneficiaries from different walks of life. This nonprofit organization was founded on 6 June 1844 by George Williams in London. The main reason why he created the organization was to put Christian principles into practice by...

Words: 1857 - Pages: 8

Journal Research Paper

... significant way as these sorts of acts induce them to destroy their own particular advantages and case insurance for a to a great degree of huge amount. As a test and the quantity of assents given to Balmoral was deserved. By giving such brutal disciplines, open would challenge not to consider such sort of deceitful acts in future. This case was taken care of suitably as the victim was punished as deserved. Reference : Stech, K., (2015). Bankrupt Chicago Horse-Racing Tracks Look for Buyers. The Wall Street Journal. http://blogs.wsj.com/bankruptcy/2015/05/08/bankrupt-chicago-horse-racing-tracks-look-for-buyers White Collar Crime Case 3: July 31, 2015. Critical Baha Mar Resort Hearing Postponed Who is involved? owner Sarkis Izmirlian of resort, contractor China Construction America Inc. and China’s Export-Import Bank. Judge Kevin Carey of the U.S. Bankruptcy Court in Wilmington, Delaware. How is the matter being addressed? A hearing on the Bahamian government's request n to have a vendor assume control over the rebuilding of Baha Mar was deferred to Aug. 19 to give the administration enough time to propose another outlet. In an announcement Friday, Baha Mar Ltd. called the whole indebtedness continuing "confused," including that the administration's application contained various flaws. Those errors were then compounded by their last-minute announcement that the persons they had proposed to act as Provisional Liquidators were...

Words: 1823 - Pages: 8

Business Operation Research

... operations, menu items are generally made from processed ingredients prepared at a central supply facilities and then shipped to individual outlets where they are cooked (usually by grill, microwave, or deep-frying) or assembled in a short amount of time either in anticipation of upcoming orders (i.e., "to stock") or in response to actual orders (i.e., "to order"). Following Standard Operating Procedures, pre-cooked products are monitored for freshness and disposed of if holding times become excessive. This process ensures a consistent level of product quality, and is key to delivering the order quickly to the customer and avoiding labor and equipment costs in the individual stores. To make quick service possible and to ensure accuracy and security, many fast food restaurants have incorporated hospitality point of sale systems. This makes it possible for kitchen crew people to view orders placed at the front counter or drive through in real time. Wireless systems allow orders placed at drive through speakers to be taken by cashiers and cooks. Drive through and walk through configurations will allow orders to be taken at one register and paid at another. Modern point of sale systems can operate on computer networks using a variety of software programs. Sales records can be generated and remote access to computer reports can be given to corporate offices, managers, trouble -shooters, and other authorized personnel. 2.2 OBJECTIVES AND GOAL OF THE COMPANY • To secure start up...

Words: 1809 - Pages: 8

Operation Research

...STEP 1 | Identify | Low Oil Price In Malaysia | STEP 2 | Dissect | 1. Definition of oil and gas 2. The cause to low oil price 3. The impacts of low oil price to Malaysia economy 4. To know about the advantages and disadvantages of low oil price | STEP 3 | Select | Impacts of low oil price in Malaysia | STEP 5 | Formulate objectives | Main objective is to determine the impact of low oil price in Malaysia Specific objectives: 1. To determine the effect low oil price on people economy 2. To determine whether oil price has long term effect or short term effect on economy | STEP 4 | Raise question | 1. What are the impacts of low oil price on nation economy 2. How does the oil price affect people economy 3. Is oil price has long term effect or short term effect on economy? | SEVEN-STEP APPROACH STEP 6 | Make sure | Assess the objectives in Step 5 in terms of: 1. The work involved: * Find out 5 articles in the internet * Find other related topic from internet such as definition of oil and gas , the cause of oil and gas and to know about the advantages and disadvantages of oil and gas 2. The time available * I did the research after class finish and completed the task given usually at night 3. The financial resources at disposal * I spend my money to print out the report and for references I just took from internet and library. There is no cost for references. 4. Knowledge and expertise in the areaMy...

Words: 402 - Pages: 2

Development of Transportation Methodology in Operation Research

...ADVANCED OPERATION RESEARCH ASSIGNMENT OF O.R. METHODOLOGY DEVELOPMENT DEVELOPMENT OF TRANSPORTATION METHODOLOGY IN OPERATION RESEARCH “PENGEMBANGAN METODE TRANSPORTASI DALAM OPERASI PENELITIAN” TYPE II – COMPARE & CONTRAST IQBAL TAWAKKAL - 1506694736 PROGRAM MAGISTER TEKNIK INDUSTRI - SALEMBA UNIVERSITAS INDONESIA 1. INTRODUCTION A special class of linear programming problem is Transportation Problem, where the objective is to minimize the cost of distributing a product from a number of sources (e.g. factories) to a number of destinations (e.g. warehouses) while satisfying both the supply limits and the demand requirement. Because of the special structure of the Transportation Problem the Simplex Method of solving is unsuitable for the Transportation Problem. The model assumes that the distributing cost on a given rout is directly proportional to the number of units distributed on that route. Generally, the transportation model can be extended to areas other than the direct transportation of a commodity, including among others, inventory control, employment scheduling, and personnel assignment. Transportation was one of the earliest application areas of operations research, and important transportation problems, such as the traveling salesman problem, vehicle routing problem, and traffic assignment problem, contributed to fundamental knowledge in operations research. Transportation remains one of the most important and vibrant areas of...

Words: 2523 - Pages: 11