1. Title Security and Management of Computer Networks
Sponsor DRDO
Period 22 March 1993 to 22 May 1998
Principal Investigato Dr. A.K. Sarje
Brief Description The aim of the project is to develop methods securing computer networks from passive and active attacks and to develop aids for network manager in monitoring and diagnostics of the secure networks. The development of security mechanisms for Computer Networks have not progressed at the same rate as the communication technology. Security mechanisms hinder communication and limit interconnectivity. Today, many networks are in place that cannot be used securely. A mechanism with emphasis on privacy and security is to be developed for computer networks.
2. Title Generating Hindi from LTAG output for English text
Sponsor AICTE
Period April 1996 to March 1999
Principal Investigato Prof. (Mrs) Kumkum Garg
Brief Description
  • Collect a large corpus of about 30,000 English words, both technical and otherwise, that are normally used in a Computer Systems Manual, and their Hindi equivalents
  • To then translate the English Manual, sentence by sentence, using an efficient Machine Translation (MT) program, designed using the Lexical Tree Adjoining Grammar (LTAG) based approach into Hindi, and
  • To provide such an MT package for future translation of Computer related technical and other popular books in English, into Hindi and possibly, other Indian languages

The technique to be used to design the MT package would be based on an AI approach, integrating the purely declarative Lexicon with the purely procedural parser/geenrator, into a resultant MT software that would be totally general and extensible to any bi-lingual translation.

3. Title Object Oriented Implementation of Real Time Database Management Systems
Sponsor Defence Research and Development Organization, New Delhi
Period Three years
Principal Investigato Dr. R.C. Joshi
Brief Description The Real Time Database Systems are extensively used in autopilot systems, automated factories with robots, war game simulation systems, etc. The objectives of the project include design of kernel suitable for Real Time Database applications with special emphasis on development of query language and its optimization, transaction processing techniques, concurrency control, buffer management and disk I/O scheduling.
4. Title Generation of Efficient Computer Codes for the Estimation of RCS of Complex Bodies
Sponsor Department of Electronics, Govt. of India
Period 4 years
Principal Investigato Dr. (Mrs) Bharoti Sinha
Brief Description The project aims for preparing softwares using numerical methods to estimate the energy scattered by any complex object. Since the scattered energy completely characterizes the object, its estimation is useful in many military and civilian applications. The numercial methods used to solve Maxwell's equations include Method of Moments, GO, PO & GTD. Newly developed "Shooting and Bouncing Ray" technique using NURBS surfaces is also being used to estimate RCS.
5 Title Cavity-Backed Microstrip Patch Antennas
Sponsor University Grants Commission
Period Dec 1997 to Dec 2000
Principal Investigato Dr. S.N. Sinha
Brief Description The principal drawback of microstrip antennas is their narrow impedence bandwidth which results from the small seperation between the patch and the ground plane. The most simple way to improve the bandwidth is to increase the thickness of the substrate. However, this results in the generation of surface waves which cause a reduction in radiation efficiency and scan blindness in an array.

Surface wave modes can be suppressed by enclosing the patch antenna within metal walls. In this project, therefore, detailed investigations are being carried out on the effect of cavity backing on the performance of microstrip patch antennas. The main objectives are:

  • Development of a theoretical model based upon the Method of Moments for the analysis of cavity-backed patch antenna with a view to study the effect of various parameters on its radiation characteristics.
  • Experimental investigations to study the effect of cavity dimensions on the antenna performance and to investigate the feasibility of a waveguide broadwall slot as a feed system.
  • To develop linear analysis of cavity-backed patch antennas fed via a microstrip line and a waveguide.