Nanthi Suthikarnnarunai

Improving Transportation Services for the University of the Thai Chamber of Commerce: A Case Study on Solving the Mixed‐Fleet Vehicle Routing Problem with Split Deliveries

We present a case study on the application of techniques for solving the Vehicle Routing Problem (VRP) to improve the transportation service provided by the University of The Thai Chamber of Commerce to its staff. The problem is modeled as VRP with time windows, split deliveries, and a mixed fleet. An exact algorithm and a heuristic solution procedure are developed to solve the problem and implemented in the AMPL modeling language and CPLEX Integer Programming solver. Empirical results indicate that the heuristic can find relatively good solutions in a small fraction of the time required by the exact method. We also perform sensitivity analysis and find that a savings in outsourcing cost can be achieved with a small increase in vehicle capacity.

Control aspects in humanitarian logistics

The purpose of this paper is to introduce a conceptual model of control aspects in humanitarian logistics. Control aspects in organisations providing humanitarian logistics have been identified and brought into context with the requirements in the phases of disasters. It was found that humanitarian relief organisations (HROs) are best suited to conduct logistics in the preparedness phase, military organisations are best suited in the emergency response phase. HROs are best suited in the recovery phase. Commercial companies are well suited in all phases. This paper has shown that control mechanisms have to be considered in the context of humanitarian logistics. This opens new avenues for academic research which should lead to improved logistics in the phases of disasters. To our knowledge, no such research has been attempted before.

Intelligent System for Transportation Mode Selection in ASEAN Countries

Abstract: Association of Southeast Asian Nations: ASEAN is an organization of ten countries in Southeast Asia consisting of Indonesia, Malaysia, the Philippines, Singapore, Brunei, Myanmar, Cambodia, Laos, Vietnam and Thailand. One of the major purposes of Asean is to create the Asean Economic Community: AEC as an economic organization. The mission of the AEC is to develop a single market and develop production base to be stable prosperous, highly competitive and economically, integrated with effective facilitation for trade and investment including a free flow of goods, services, investment, skilled labors and capital . This paper focuses on investigating the constraint within the three major modes of transportation (Air Sea and Truck) and reviewing the major factor influenced mode selection of the trading organization in Asean countries. Whilst constraints and complexities exist particularly within different countries, products values, lead time, a lack of knowledge on the condition of each transportation mode of the Small and Medium Enterprise (SME). At the time for those requirements can result in business limitation and restrictions. The results of research will lead to the design of an intelligent transportation system program that will not only illustrate solution for the trading organization in Asean countries but also provide variable costing and accurate transit time as management tools for users.

Airline Network Analysis of ASEAN International Airport Region

This research is a methodology to measure the position of hub airports in Southeast Asia. The purpose of this research was to measure the number of indirect connecting flights in ASEAN. The documents used for this research were the statistics of annual reports between 2003 and 2012 of ten airports. Four methods of analysis were used: Netscan model, Concentration ratio, HerfindahlHirschman index, and Comprehensive concentration index. Market share in ASEAN airports is dominated by five big companies: Suvarnabhumi International Airport (BKK) in Thailand, Changi International Airport (SIN) in Singapore, Kuala Lumpur International Airport (KUL) in Malaysia, Ninoy Aquino International Airport (MNL) in the Philippines and Sugarno Hatta International Airport (CGK) in Indonesia. The first three are of these airports are major hubs for the ASEAN region. The analysis presented in this research may be helpful for airports or airlines in identifying their network performance and position in relation to their competition.

Efficiency Improvement for Multi Depot Vehicle Routing: A Case Study in Cash Distribution

This research is aimed at increasing efficiency of cash distribution from three distribution centers delivered to 377 branches, and 3,699 automatic teller machines by using Cluster First – Route Second technique. New concept of assignment problem with time window is presented in this paper for clustering. A Group Sweep Algorithm which is modified from a traditional Sweep Algorithm combined with a nearest neighbor search is also presented as the routing methodology. Application software has developed using PHP and MySQL. AMPL with CPLEX 10.0 is used to solve the assignment problem and is perfectly embraced underneath the developed application software to allow the user friendly experience. The software allow the flexibility in changing various parameters such as, capacity proportion of each cash distribution center, speed of vehicle, service time at each branch or ATM, time window of each branch or ATM or distribution center, etc. The result shows that 11 vehicle can be reduced resulting in cost reduction in a total amount of US

Automotive Supply Chain and Logistics Management

195,097 annually