Mathematical Modelling on Occupation at the Cost of Life in Contemporary Kolkata
Dr. Dilip Kumar Chakraborty, Sukla Roy Chowdhury (Bindu), Tapas Saha, Pranjal Chakraborty
A number of authors have treated the different aspects of sex workers from different angles like social, economical, ethical and moral. This work of ours is bit different from that of other research workers. Through this work we are trying to draw a correlation between the educational qualification and the profession of the prostitutes through a Mathematical Modelling.
Mathematical model to find the effect of mass education and literacy movement on the profession of the Sex Workers
Sukla Roy Chowdhury (Bindu), M Chakraborty, Sk. Mafijul Islam
A number of authors have treated the problem of sex workers from different perspectives like, social, ethical and moral. But the present work is an attempt to find the effect of mass education and literacy movement on the profession of the Sex Workers in contemporary Kolkata, with the help of mathematical techniques.
Loss-Delay Queuing Model for Time-shared System with additional Service Positions and No passing
Madhu Jain, Chandra Sekhar, Poonam Singh
This paper deals with loss-delay queuing model for time-sharing system with additional service positions under the restrictions of nopassing. The nopassing restriction characterizes the jobs into two categories A and B, based on service requirement. Type A jobs are those that have zero service time but have to wait due to nopassing constraint. The type B jobs have exponential service time. For increasing the efficiency of professor, the jobs are processed at various time-shared service positions available at single processor. Mathematical analysis is carried out to obtain steady-state probabilities of system states for finite capacity and finite population models. The cases are also provided which match with earlier results. Numerical results are obtained to validate the analytical results and to facilitate the sensitivity analysis.
Kinematics and Dynamics of an Industrial Robots
F.J. Ogwu
Kinematics and dynamics of an industrial robot is hereby presented. New-Euler and Lagrange formulation of equations of motion for an open-loop kinematics chain were used in the design of the robot's kinematics models. Using the relevant kinematics data, the design of a prismatic joint trajectory was carried out. The results thus obtained are hereby presented.
A Data Structure for File Creation, Retrieval and Queries in an Interactive Multimedia Database System
Partha Kr. Mukherjee, Mita Nasipuri, D.K. Basu, M. Kundu
A data structure for File Creation, Retrieval and Queries in an Interactive Multimedia database system has been developed in Visual Basic (Ver. 6.0) as a primary development environment. Here, the item retrieval method is both hierarchic and relational through the use of object oriented approach. In a given relation model, the system can retrieve the various attributes of different media by following the same hierarchical path. The Searching and sorting of data, joining of two or more files and database query generation are adopted through the text annotated primary key which saves the overall execution time. In query generation, our system enables indirect querying to retrieve the contents of heterogeneous types of data by adopting the domain knowledge. Here, the condition of queries is represented in a single media such as text for ease of specifying queries. We call this indirect querying, where the type of specified condition differs from that of target data. Indirect queries provide more freedom in specifying a query for retrieval in a multimedia database. Here the domain knowledge describes how the system views the target multimedia data for the retrieval of data by using MSQL (Multimedia SQL). MSQL supports the spatial predicates for image and graphic data retrieval. The arguments of the predicates can be semantics, image/graphics or dual entities. In case of Images in Multimedia Database generally the above mentioned three types of entities are used in the query language and query processing. In our system a query language has been developed between two databases, namely text and image. Many of the existing approaches [5] treat an image as a whole entity and image matching is based on feature vectors extracted from images. In the proposed system an image is viewed as a compound object which contains multiple component objects and their spatial relationships. Since the present system is object oriented in nature it doesn't require any separate control for each media type and thus saves both time and resource. The system has been tested and with 500 text and 500 image/graphics data for file creation, retrieval and query generation with 20 users in 30 minutes for 99% accuracy.
Single Electron Logic Circuits for the Realization of A Logic Unit of A Computer
Anup Kumar Biswas, A.K. De, C. Puttamadappa and Subir Kumar Sarkar
An electrical switch can be replaced by an optical switch or electron-wave modulation or single electron transport. Here, a logic unit of a computer is realized using single electron logic circuits. One stage of logic circuit for a pair of bits of the input operands is designed and realized with single logic circuits. For operands with n bits, the logic circuit of a computer can be obtained by cascading 'n' such identical stages.
A Comparative Study of Existing Protocols Supporting IP Mobility
Mahua Chakraborty, Iti Saha (Misra), Amitava Mukherjee, Debashis Saha
The widespread growth of wireless networks and services, for next generation mobile communications systems research, has ushered in the era of pervasive computing. Portable computers like laptops, palmtops, and the widespread use of the Internet are motivating service providers to support seamless user mobility. To realize a commercially viable IP mobility support over the current cellular infrastructure, still remains a research challenging area. A performance comparison of various Micro-mobility and macro-mobility protocols discussed in the IETF Mobile IP Working Group over recent years have been presented in this paper. IP micro-mobility protocols offer fast and seamless handoff control in small geographical areas, and IP paging support for scalability and power saving unlike Mobile IP. There are apparently many differences between IP micro-mobility protocols, but the principles of operation that govern them are quite similar. In particular, for real-time multimedia communications, user mobility poses several challenges.
Some Observations On Metrics For Structured Versus Object-Oriented Software
Alok Mishra, Ms. Deepti Mishra
The traditional works in software engineering metrics were concerned with structured (or function oriented) technology of software development. Later object orientation started gaining importance particularly during the last decade. Various metrics for Object-Oriented Software are reported in the literature. This work aims at comparing the various types and classes of metrics for structured and Object-Oriented Software giving similarities and differences. The software engineering literature contain descriptions of various metrics for Object-Oriented and structured approach software development as different issues. We present a comparison giving similarities and differences as required for the purpose in tabular form. The objective is to consider the question of usability of metrics for structured software for carrying out characterization of OO software and its development process. It concludes with the observation that OO software and its development methodology are fundamentally different from that of structured software case and hence these metrics are not directly usable in case of OO Software. Nevertheless the ideas similar to structured software metrics can be used for development of metrics for OO software development process.
A Security System Based On Binary Decision Diagram Using Single-Electron Transport
Anup Kumar Biswas, Samir Kumar Sarkar and Subir Kumar Sarkar
This paper represents a single-electron logic device called security system with the help of binary decision diagram (BDD). The unit function of this BDD is two-way switching. Its function can be implemented by using different physical effects, such as single electron transport, optical switching, and electron wave modulation. For convenience, single-electron transport has been utilized. The logic circuit of the security system is implemented by combining the different component formed by unit BDD devices. The security system is realized by controlling the transport of the single electron through the appropriate path.
Object Allocation In Distributed Computing Systems
Deo Prakash Vidyarthi, Anil Kumar Tripathi, Biplab Kumar Sarkar, Kirti Rani
Task allocation techniques for distributed computing system are being discussed since last two decades. Most of the techniques conceive the process in the allocation of tasks. The concept of the object has emerged in recent and became very popular. This work considers the object and its allocation in distributed computing system. A general technique for object allocation is suggested.
Transient Analysis Of State-Dependent Multi-Processor System
Madhu Jain and Chandra Shekhar
In this investigation, the performance characteristics of multi-processor (primary and secondary) system have been studies. Processing of jobs have been done through one primary processor and r secondary processors where primary processor turns on (off) when there are N or more (none) jobs to be processed and i th (I=1,2,....,r) secondary processor turns on (off) when there are N+im or more (less that N+im) jobs in the system. A computational method is developed to derive transient probabilities. The variation of performance characteristics is indicated in tables and figures with respect to different parameters.
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