An Informal Overview Of Protocol Conversion Methodologies
D. Saha
In this paper, a clear exposition of the existing formal approaches to the protocol conversion problem has been given, with a view to underline the gravity of the problem and the brisk activity currently going among the protocol engineers to understand it completely. Specifically, during the last eight years, several formal methods and protocol engineering techniques have been extensively applied for performing protocol conversion and for verifying the correctness of the converter. Formal converter design procedures, which are based on CFSM model and reported thus far, are discussed briefly in this paper. Since a protocol conversion problem can be viewed as having three major levels of complexity, namely conversion specification, converter derivation, and conversion system verification, the research activities carried out in each of these three aspects of conversion have been carefully reviewed. In summary, it will be evident from this survey that the problem is far from being solved for both theoretical models and practical protocols.
Hybrid Control of Tumbling Mill Using NN Based Schematics
Arup Bhaumick, Jaya Sil, S.B Tripathy, Suman Banerjee
(Received July 2, 1998, Revised April 22, 1999)
The work aims at developing feed forward neural network model meant for controlling a tumbling mill apparently in open circuit but actually perform a closed circuit operation. The data input is particle size in vector form and output is size of particle of crushed parent in hand/upper triangular matrix. The model is verified by the data generated in laboratory experiments.
A New Universal Data Compression Technique Using Running Difference Method
Jyotsna Kumar Mandal and Atal Chaudhuri
The present paper proposed two data compression techniques one is just variant of other. These two schemes are named as Pivotal Difference Method (PDM) and Running Difference Method (RDM). In PDM, after keeping the first byte from input file to output file as it is, the subsequent bytes are read from the input file and the difference between the binary values with respect to the first byte is added to the output file if, the difference is within -30 to +31 where the byte is compressed to six bits, otherwise, six ones are put into the output stream / file as a separation character followed by the byte of the character and pivot will change from first to this byte. For RDM, this Pivot will shift to the next byte after each subsequent byte. Both of the techniques come under the category of reversible one. That means, the bytes are fully recoverable. Both of them may be used in different categories of files such as text, data, executable as well as image files. So, the techniques are universal. Normally, a compression ratio of slightly less than 25% may be ensured. But, repeated use of the algorithm shows consistently high compression ratio. After a certain number of iterations ratio gets saturated.
A Mathematical Approach On Optimal Control Problem For The Cooling Of Steel On Rolling Mills
Paritosh Kumar Dhar And Tripti Chakraborty
In this paper an optimal strategy for cooling of hot rolling of steel to attain a desired temperature has been Considered by Constructing Hamiltonian on the basis of manu forthciple.
Value added Concept : A Change In The Dimension Of Reporting Practices
Pranam Dhar
Traditionally, the objective relating to the operation of a corporate undertaking was to create value. This value was oriented towards the owners or shareholders only. From this standpoint value towards the owners of the firm, i.e., profit. According to this concept, value represented the market price of the company's common stock. Different financial statements were prepared keeping in view this profit making objective. But with the passage of time, the concept of value changed and gradually value signified not the only the shareholders' value but also value to the other stockholders such as employees, management and other providers of capital. Resultantly, the publication of Value Added Statements was emphasised by the Accounting Standards Steering Committee of the United Kingdom in 1975. The present paper makes an attempt to show how the Value Added Statement has brought a change in the dimension of the reporting practices of the Indian Corporate Sector.
International Relations Theory
AN ALTERNATIVE DISCOURSE
Jayantanuja Bandyopadhyaya & Amitava Mukherjee
Mainstream International Relations theory is dominated by western, particularly American scholars. Some of its major assumptions and postulates are the intellectual offshoot of the historical experience of the West, and are therefore ethnocentric rather than universal. In particular, they are alien to the historical experience of the Third World countries and antithetical to their collective global interests. The authors have exposed the conceptual and methodological weakness of mainstream IR discourse, and presented an alternative discourse, in the form of mathematical models of some major issue areas of international relations, which is universal in scope and sophisticated in methodology.
Improper Retrieval of Document from A Document-Base due to Presentation and Selection
(Received June, 25, 1998. Revised July 7, 1999)
G. Garai
A large database of documents, termed as document-Base (DB), is a collection of tens of thousands of documents that are represented in a straight forward or modified form of the original document. A generalized Document Retrieval System (DRS) has been examined to identify the areas for which users are deterred from retrieving desired document (s) from a DB. One of the most important techniques for fast and accurate retrieval of data from a database is representation. Selection process also takes a vital role in retrieving document (s), measuring relative relevance between the given query (supplied by the user as an imaginary document ) and the document of the DB. The presentation of the document as well as the query and the selection techniques have thoroughly been checked to demarcate the key source of errors that causes to differ the output of the system from the expected one. Some reasons for the occurrence of errors have been identified and their probable solutions have also been proposed. Fast and accurate retrieval is possible with full satisfaction of the user if the errors in those areas are reduced.
A Numerical Approach for Stable Solution of Ferro-Resonant Conditions with Non-Analytical Forcing Functions
A. Mukherjee, A. Maity, R. Saha
Ferro-resonance is a possible response of R-L-C Circuits with nonlinear inductive parameter. Of the various mathematical methods for the solution of this initial value dependent response the direct integration based time domain technique has been found to be quite suitable for any kind of forcing function. This paper shows how a graphical technique can be incorporated in the aforesaid step-by-step numerical method for a numerically stable solution. The method is easily applicable to both single line non-linearly as well as non-linearity exhibiting hysteresis.
Computerization of Indian Music Scoring Scheme
Shinjinee Chattopadhyay and Lopamudra Roy
Research in Indian music based on artificial intelligence has been hindered due to non-availability of a common vocabulary and information exchange protocol between the computer specialist and music practitioner community. In this paper a scheme has been developed for representing Indian classical and light music score following the Vishwa Bharati University methodology.
Caching of Multimedia Objects : A Survey
(Received April, 22, 1999. Revised August, 9, 1999)
P.K. Mahanti, S. Chaudhuri, and Musbah Aqel
This paper gives a survey of the caching technique used for multimedia objects. It is also highlighted that more works need to be done to design effective caching strategies for multimedia servers.
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