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Interactive Decisions for Transport Management: Applications in the Coal Transportation Sector
-- O P Dubey, M K Singh, R K Dwivedi and S N Singh
This paper presents a model for coal transportation between collieries and power plants for
reduction of transportation costs and optimal utilization of transport resources. This serves the twin
benefits of cost savings both for collieries and power plants. Fourteen coal production sites (collieries)
and six consumption sites (destinations) are considered for the study. Using Operations Research
(OR) techniques, several feasible solutions are obtained by changing the priority level of goals,
demands and budget.
© 2011 IUP. All Rights Reserved.
Assessing the Relative Efficiencies of Schools
in Dhanbad District
Using Data Envelopment Analysis
-- R K Dwivedi and A C Trigunait
The process of identification of best schools is complex and is based on the comparison made
between the schools. So, it is not surprising to note that the evaluation of relative merits of the
government schools and the choices to be made as to where to enroll their children feature high in
parents' conversations. Though there is enough discussion among parents regarding the selection of
private or government schools for enrolling their children, there is little or no quantitative measure for
such evaluation. Thus, a relative efficiency measure for evaluation of schools is required. This will
help in making a comparison between government/government-aided schools and
privately-operated schools. The purpose of this study is to devise a Data Envelopment Analysis (DEA) system
for assessing the efficiency of government/government-aided schools in Dhanbad district of
Jharkhand state in India.
© 2011 IUP. All Rights Reserved.
Development of Cellular Layout
for a Pump Manufacturing Industry
-- P S S Prasad and G Aravinthan
The development of optimal layout and its alternatives is a critical step in the facilities
planning process. A good layout reduces accidents, labor costs, minimizes the movement between work
centers, facilitates uninterrupted flow of the materials and helps to carry production activities within
the predetermined time period with effectiveness. In this paper, a small-scale pump
manufacturing industry is analyzed for its existing layout. The existing layout is found to be a process layout,
and an attempt is made to study the possible benefits from the implementation of a cellular layout.
The case specifically deals with the layout analysis of the production line of two different models
of submersible pump. Multiple identical machines are involved in this process. An algorithm,
involving operation allocation to machines rather than part allocation to cells, proposed by Xambre
and Vilarinho (2003) is used to obtain the starting solution. Further betterment of the solution is
achieved using the heuristic approach. The whole manufacturing process, for both existing and
modified layouts, is simulated using the simulation software WITNESS, and the improvement in
various parameters like material handling, Work-in-Process (WIP), waiting time, etc. is observed
and presented in the paper.
© 2011 IUP. All Rights Reserved.
Creating a Virtual Data Warehouse
for Manufacturing Industry
-- Nasina Jigeesh and Santhi Sree Kondabolu
Data warehousing is the best solution to relieve the database management systems from
holding the long-standing data which accumulates from day-to-day business transactions. But creating
and managing a data warehouse is a complex task, and in addition, data warehouse tools
available in the market are very expensive. To make the data warehouse solutions
cost-effective, creation of virtual data warehouse is one of the options in the case of
applications having limited scope or limited duration. This paper deals with the development of such virtual
data warehouse for effective supply chain management for a multinational software development
and consultancy company dealing with big semiconductor manufacturing industries. The design
and development of the virtual data warehouse is described in detail using the existing
database management systems and the existing huge database of the companies. The data warehouse
has been created based on the important business requirements, identifying the relevant existing
data sources that can be integrated to generate respective dimensional tables and, thereby, the fact
tables, and then finally completing the multidimensional models to derive answers to the respective
queries. The paper also presents some screen shots of the application interface.
© 2011 IUP. All Rights Reserved.
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