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Institution

Indian Institute of Technology Kharagpur

EducationKharagpur, India
About: Indian Institute of Technology Kharagpur is a education organization based out in Kharagpur, India. It is known for research contribution in the topics: Natural rubber & Dielectric. The organization has 16887 authors who have published 38658 publications receiving 714526 citations.


Papers
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Proceedings ArticleDOI
18 Aug 2008
TL;DR: It is found that links tend to be created by users who already have many links, that users tend to respond to incoming links by creating links back to the source, and that users link to other users who are already close in the network.
Abstract: Online social networking sites like MySpace, Orkut, and Flickr are among the most popular sites on the Web and continue to experience dramatic growth in their user population. The popularity of these sites offers a unique opportunity to study the dynamics of social networks at scale. Having a proper understanding of how online social networks grow can provide insights into the network structure, allow predictions of future growth, and enable simulation of systems on networks of arbitrary size. However, to date, most empirical studies have focused on static network snapshots rather than growth dynamics.In this paper, we collect and examine detailed growth data from the Flickr online social network, focusing on the ways in which new links are formed. Our study makes two contributions. First, we collect detailed data covering three months of growth, encompassing 950,143 new users and over 9.7 million new links, and we make this data available to the research community. Second, we use a first-principles approach to investigate the link formation process. In short, we find that links tend to be created by users who already have many links, that users tend to respond to incoming links by creating links back to the source, and that users link to other users who are already close in the network.

439 citations

Reference BookDOI
23 Feb 2009
TL;DR: In this paper, a case study of Cp2M fragment (M = Ti, Zr) in C-C Coupling and Decoupling Reactions is presented.
Abstract: How I Came about Working on Conceptual DFT, RG Parr Chemical Reactivity Concepts in Density Functional Theory, JL Gazquez Quantum Chemistry of Bonding and Interactions, P Kolandaivel, P Venuvanalingam, and GN Sastry Concepts in Electron Density, BM Deb Atoms and Molecules: A Momentum Space Perspective, SR Gadre and P Balanarayan Time-Dependent Density Functional Theory of Many-Electron Systems, SK Ghosh Exchange-Correlation Potential of Kohn-Sham Theory A Physical Perspective, MK Harbola Time-Dependent Density Functional Theory from a Bohmian Perspective, AS Sanz, X Gimenez, JM Bofill, and S Miret-Artes Time-Independent Theories for a Single Excited State, A Nagy, M Levy, and P Ayers Spin-Polarized Density Functional Theory: Chemical Reactivity, R Vargas and M Galvan The Hardness of Closed Systems, RG Pearson Fukui Function and Local Softness as Reactivity Descriptors, AK Chandra and MT Nguyen Electrophilicity, S Liu Application of Density Functional Theory (DFT) in Organometallic Complexes: A Case Study of Cp2M Fragment (M = Ti, Zr) in C-C Coupling and Decoupling Reactions, S De and ED Jemmis Atoms in Molecules and Population Analysis, P Bultinck and P Popelier Molecular Quantum Similarity, P Bultinck, S Van Damme, and R Carbo-Dorca The Electrostatic Potential as a Guide to Molecular Interactive Behavior, P Politzer and JS Murray The Fukui Function, P Ayers, W Yang, and LJ Bartolotti The Shape Function, P Ayers and A Cedillo An Introduction to the Electron Localization Function, ELF, P Fuentealba, D Guerra, and A Savin The Reaction Force: A Rigorously- Defined Approach to Analyse Chemical and Physical Process, A Toro-Labbe, S Gutierrez-Oliva, P Politzer, and JS Murray Characterization of Changes in Chemical Reactions by Bond Order and Valence Indices, G Lendvay Variation in Local Reactivity During Molecular Vibrations, Internal Rotations and Chemical Reactions, S Giri, DR Roy, and PK Chattaraj Reactivity and Polarisability Responses, P Senet External Field Effects and Chemical Reactivity, R Kar and S Pal Solvent Effects and Chemical Reactivity, V Subramanian Conceptual Density Functional Theory, Towards an Alternative Understanding of Non-Covalent Interactions, P Geerlings Aromaticity and Chemical Reactivity, E Matito, J Poater, M Sola, and PVR Schleyer Multifold Aromaticity, Multifold Antiaromaticity and Conflicting Aromaticity Implications for Stability and Reactivity of Clusters, DY Zubarev, A P Sergeeva, and AI Boldyrev Probing the Coupling between Electronic and Geometric Structures of Open and Closed Molecular Systems, RF Nalewajski Predicting Chemical Reactivity and Bioactivity of Molecules from Structure, SC Basak, D Mills, R Natarajan, and BD Gute Chemical Reactivity: Industrial Application, A Chatterjee Electronic Structure of Confined Atoms, J Garza, R Vargas, and KD Sen Computation of Reactivity Indices: The Integer Discontinuity and Temporary Anions, F De Proft, and DJ Tozer

436 citations

Journal ArticleDOI
TL;DR: A comprehensive review of the use of trifluoromethyl (CF3) substituents in polymers can be found in this paper, where the main focus is on the synthesis of polymers from the corresponding CF3 substituted monomers, and the consequent property advantages brought about in the polymer.

433 citations

Journal ArticleDOI
05 Mar 2013-ACS Nano
TL;DR: It is demonstrated that the presence of both the high-energy {001} oxidative and low-energy{101} reductive facets in an optimum ratio is necessary to reduce the charge recombination and thereby enhance photocatalytic activity of TiO2 NCs.
Abstract: Controlled crystal growth determines the shape, size, and exposed facets of a crystal, which usually has different surface physicochemical properties. Herein we report the size and facet control synthesis of anatase TiO2 nanocrystals (NCs). The exposed facets are found to play a crucial role in the photocatalytic activity of TiO2 NCs. This is due to the known preferential flow of photogenerated carriers to the specific facets. Although, in recent years, the main focus has been on increasing the surface area of high-energy exposed facets such as {001} and {100} to improve the photocatalytic activity, here we demonstrate that the presence of both the high-energy {001} oxidative and low-energy {101} reductive facets in an optimum ratio is necessary to reduce the charge recombination and thereby enhance photocatalytic activity of TiO2 NCs.

432 citations

Journal ArticleDOI
TL;DR: In this article, an attempt has been made to generate the complete stress-strain curve experimentally for steel-fiber reinforced concrete for compressive strength ranging from 30 to 50 MPa.
Abstract: Steel-fiber reinforced concrete is increasingly being used day by day as a structural material. The complete stress–strain curve of the material in compression is needed for the analysis and design of structures. In this experimental investigation, an attempt has been made to generate the complete stress–strain curve experimentally for steel-fiber reinforced concrete for compressive strength ranging from 30 to 50 MPa. Round crimped fibers with three volume fractions of 0.5%, 0.75% and 1.0% (39, 59, and 78 kg/m3) and for two aspect ratios of 55 and 82 are considered. The effect of fiber addition to concrete on some of the major parameters namely peak stress, strain at peak stress, the toughness of concrete and the nature of the stress–strain curve is studied. A simple analytical model is proposed to generate both the ascending and descending portions of the stress–strain curve. There exists a good correlation between the experimental results and those calculated based on the analytical model. Equations are also proposed to quantify the effect of fiber on compressive strength, strain at peak stress and the toughness of concrete in terms of fiber reinforcing parameter.

431 citations


Authors

Showing all 17290 results

NameH-indexPapersCitations
Rajdeep Mohan Chatterjee11099051407
Vijay P. Singh106169955831
Arun Majumdar10245952464
Sanjay Gupta9990235039
Biswajeet Pradhan9873532900
Sandeep Kumar94156338652
Jürgen Eckert92136842119
Praveen Kumar88133935718
Tuan Vo-Dinh8669824690
Lawrence Carin8494931928
Anindya Dutta8224833619
Aniruddha B. Pandit8042722552
Krishnendu Chakrabarty7999627583
Ramesh Jain7855637037
Thomas Thundat7862222684
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023284
2022849
20213,142
20202,907
20192,779
20182,489