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Your search keyword '"Jain, R.C."' showing total 162 results
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162 results on '"Jain, R.C."'

1. High density polyethylene (HDPE) clay nanocomposite for dielectric applications

Author

Shah, K.S., Jain, R.C., Shrinet, V., Singh, A.K., and Bharambe, D.P.

Subjects
Clay -- Electric properties, Nanotechnology -- Research, Dielectrics -- Properties, Composite materials -- Electric properties, Business, Electronics, Electronics and electrical industries
Abstract

Indigenous Montmorillonite clay available from Kutchh region in western part of India was modified by Hexadecyl trimethyl ammonium bromide, a quaternary ammonium compound to make it organophilic. It was blended with high density polyethylene (HDPE) in a Brabender Plasticoder. The condition for blending was optimized and sheets were prepared for evaluating mechanical, electrical and thermal properties. Mechanical property such as tensile was improved. The electrical properties such as dielectric strength, volume resistivity and surface resistivity were measured as per ASTM D149 and ASTM D257 standards. It was observed that electrical properties of nanoclay composite improved significantly when organoclay was treated with silane and titanate compounds. Thermal characterization of the HDPE and HDPE clay nanocomposite had been carried out by thermogravimetric analysis (TGA). It has been observed that the thermal stability of the nanocomposite increases significantly when the silane and titanate coupling agents are used. Index Terms--Dielectric, nanocomposite, silane coupling agent, titanate coupling agent, montmorillonite clay, quaternary ammonium compound.

Published
2009

2. Mining level-crossing association rules from large databases

Author

Thakur, R.S., Jain, R.C., and Pardasani, K.R.

Subjects
Data mining -- Methods, Data mining -- Analysis, Algorithms -- Usage, Data warehousing/data mining, Algorithm, Computers
Abstract

Abstract: Existing algorithms for mining association rule at multiple concept level, restricted mining strong association among the concept at same level of a hierarchy. However mining level-crossing association rule at [...]

Published
2006

3. On-line broadcast archives for interactive video

Author

Srivastava, H.O. and Jain, R.C.

Subjects
Interactive video systems -- Management, Digital video interactive -- Management, Digital television -- Management, Television broadcasting -- Management, Business, Electronics, Mass communications
Abstract

Delivery of user specified interactive multimedia digital services is drawing world attention. With availability of greater number of channels as a result of video compression and geographical barrier receding, content providers are hard pressed to meet the programme requirements. Broadcast archives are valuable multimedia resource centres, stocking audio and video materials of interest to a vast population across the globe. There is a great potential of using these archives for on-line interactive access of the material. The present paper describes the system architecture and implementation issues of an On-Line Broadcast Archives Management system (OLBAMS) which entails various functions of storage and dissemination, taking advantage of emerging digital technology viz, video servers, OODBMS, CORBA, MPI video, use of jawa applets for set-tops, webTV, or computers.

Published
1997

5. Low complexity fractal-based image compression technique

Author

Kumar, Sunil and Jain, R.C.

Subjects
Fractals -- Usage, Image processing -- Digital techniques, Image coding -- Methods, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

A fast image compression technique as well as its Progressive Image Transmission (PIT) version using fractals is presented which uses a small pool of domains extracted using visually significant patterns. The affine transformations for an edge block are obtained by using its edge characteristics instead of minimum mean square error criterion. Simulation studies demonstrate that this method is computationally simple, gives faster encoding speed and achieves good fidelity at relatively higher compression ratios than other fractal based techniques.

Published
1997

6. An efficient lapped orthogonal transform image coding technique

Author

Kumar, Sunil, Rathi, Yogesh N., and Jain, R.C.

Subjects
Image coding -- Methods, Coding theory -- Analysis, Image processing -- Digital techniques, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

A fast and computationally less complex coding technique is described which uses partial-LOT computation algorithm and efficiently discards perceptually insignificant high frequency transform coefficients. The coding process involves AC energy classification, human visual system weighted normalization and quantization. The values of normalization factors are image independent and governed only by the bit-rate and activity index of the image blocks. Zones of various shapes and sizes are chosen for each activity class to perform zonal sampling which efficiently discards high frequency coefficients having zero values. A progressive transmission version of the proposed technique is also given. This technique gives better performance at comparable bit-rate than that obtained by using LOT/CVQ and LOT/VQ schemes.

Published
1997

14. Facial features matching using a virtual structuring element

Author

Valenti, R., Sebe, N., Gevers, T., Jain, R.C., Santini, S., and Intelligent Sensory Information Systems (IVI, FNWI)

Abstract

Face analysis in a real-world environment is a complex task as it should deal with challenging problems such as pose variations, illumination changes and complex backgrounds. The use of active appearance models for facial features detection is often successful in restricted environments, but the performance decreases when applied in unconstrained environments. Therefore, in this paper, we introduce a novel method that integrates the knowledge of a face detector inside the shape and the appearance models by using what we call a 'virtual structuring element' (VSE). In this way the possible settings of the active appearance models are constrained in an appearance-driven manner. The use of a virtual structuring element in an active appearance model provides increased performance in both accuracy and robustness over standard active appearance models applied to different environments.

Published
2008

22. Direct Estimation and Error Analysis for Oriented Patterns

Author

Artificial Intelligence Lab, EECS, University of Michigan, Ann Arbor, MI 48109, USA, Shu C.F., Jain R.C., Artificial Intelligence Lab, EECS, University of Michigan, Ann Arbor, MI 48109, USA, Shu C.F., and Jain R.C.

Abstract

This paper presents an estimation algorithm and error analysis for single linear oriented pattern in images. The estimation is formulated in terms of minimizing an objective function, using the Lagrange multiplier rule. No specific noise model is assumed. The estimation algorithm uses the intensity image of a flow pattern and directly determines a symbolic description of the pattern. No preprocessing or enhancement is needed on the intensity image or any intermediate data. This results in an efficient computational algorithm. We show that it is feasible to directly compute relative divergence, curl, and deformation from the intensity image of an oriented flow pattern. These relative properties are further used for identification of the type of pattern in the intensity image. Since an oriented pattern is corrupted by noise and is distorted to some degree from a linear flow pattern, quality measures of the estimation are proposed. The sampling mean, sampling variance, and energy of noise are computed to characterize its distribution. A closed-form condition number is used to measure the vulnerability of an estimated critical point position to noise perturbation. We show results for several experiments on fluid flow images and wafer defect patterns.

Published
2006

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