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Rajib Kar ¹

Affiliations
1 Department of Geology, J K College, Purulia - 723 101, IN

Abstract

The granulite complex around Jenapore, Orissa bears the imprints of three deformations, of which first two (D₁ and D₂,) are strong events and related to pervasive deformational fabrics S₁, and S₂, respectively. Sector-wise structural analyses reveal that regional F₁ folds, product of D₁ deformation, are isoclinal, reclined, while the regional F₂, folds, product of D₂, deformation, are upright with overall gentle easterly plunges. Also, the polyclinal and non cylindrical nature of regional F₂ prior to F₃ folding is evident. This geometrical relation and certain key features such as (1) transposition/cross-cutting of early deformation fabric by later ones, (2) different modes of recrystallization during separate deformation episodes, (3) distinct deformational regime and response of materials related to deformation fabrics and (4) recrystallization of early fabric to a new one under granulite facies condition, definitely indicate a hiatus between D₁ and D₂ deformations.

Keywords

Fold Geometry, Deformation Fabrics, Hiatus, Structural History, Eastern Ghats Granulite Belt.

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Rajib Kar ¹, S. Bhattacharya ²

Affiliations
1 Department of Geology J K College, Puruha - 723 101, IN
2 Geological Studies Unit, Indian Statistical Institute 203 B T Road Kolkata 700035, IN

Abstract

Two types of high Mg-Al sapphirie granulites are noted from the area In and around Paderu, Eastern Ghats GranulIte belt, IndIa One is relatIvely more mafic, coarse gramed variety with crude internal foliation (type I) and the other is relatively fine grained, more fe/SiC and migmatitic variety wIth a promment foliation (type II) In thIs granulte belt Impress of three phases of folding could be detected, with corresponding fabric development Enclaves of type I varIety are preserved with in charnockite In the low stram zone core of mesoscopic F₂ folds, defined by S₁, streaky gneissIc fohation The crude mternal foItatIon m the enclave, dIscordant to S₁ of the host could be pre S₁ The bands of type II vanety together wIth mternal foItation, S₂ define F₂ folds Thus the high Mg Al sapphirine granulites preserve the Imprints of the early deformational fabric The mineral growth in them along with this fabric, indicating ultra high temperature metamorphism is correlatable to this early compressive deformation.

Keywords

Sapphirine Granulites, Deformation Structures, Fabric, Mineral Growth, Paderu, Eastern Ghats.

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Rajib Kar ¹, Vikas Maheshwari ¹, Md. Maqbool ¹, A. K. Mal ¹, A. K. Bhattacharjee ¹

Affiliations
1 Department of Electronics & Communication Engineering, National Institute of Technology, Durgapur, IN

Abstract

This work presents an accurate and efficient model to compute the delay and slew metric of on-chip interconnect of high speed CMOS circuits foe ramp input. Our metric assumption is based on the Burr's Distribution function. The Burr's distribution is used to characterize the normalized homogeneous portion of the step response. We used the PERI (Probability distribution function Extension for Ramp Inputs) technique that extends delay metrics and slew metric for step inputs to the more general and realistic non-step inputs. The accuracy of our models is justified with the results compared with that of SPICE simulations.

Keywords

Delay and Slew Calculation, Burr’s Distribution Function, Probability Distribution Function, Cumulative Distribution Function, Interconnect, Moment Matching.

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Hemant Patidar ¹, Vikas Maheshwari ², Rajib Kar ³, Prasanna Kumar Singh ⁴, Vijay Kumar Sahu ⁵

Affiliations
1 Department of Electrical and Electronics Engineering, Oriental University, IN
2 Department of Electronics and Communication Engineering, Guru Nanak Institutions, IN
3 Department of Electronics and Communication Engineering, National Institute of Technology, Durgapur, IN
4 Department of Electronics and Communication Engineering, Noida Institute of Engineering and Technology, IN
5 Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, IN

Abstract

In the present paper three evolutionary algorithms are compared and discussed for synthesizing a linear array of dipole antenna of half-wavelength oriented horizontally. All the dipoles are mutually coupled and designed to radiate the flat-top beam (FTB) pattern including multiple single null steering with little ripple deviation. The adopted evolutionary algorithms are; flower pollination algorithm (FPA), firefly algorithm (FA) and back tracking search algorithm (BSA), respectively. These algorithms are then combined with an efficient Inverse Fast Fourier Transform (IFFT) for reduction in the computation of evaluating time meaningfully. The required synthesis is attained by generating the current amplitudes at 00 and 1800 using binary phase shifters for the antenna array. The performance analysis of key antenna parameters along with the statistical parameters is achieved with the help of the optimization process and compared. In this paper, the MATLAB tool is used as a validation tool and the obtained simulation results are very satisfying and acceptable.

Keywords

Antenna Array, Backtracking Search Algorithm, Firefly Algorithm, Flower Pollination Algorithm, Flat-Beam Pattern, Side Lobe Level, Single Null Placement, Ripple, VSWR.

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