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Loan Loss Provisions, Earnings, Capital Management and Signalling: Evidence from Indian Banks
Saibal Ghosh 연세대학교 동서문제연구원 2007 Global economic review Vol.36 No.2
The debate on bank capital regulation has in recent years devoted specific attention to the role that bank loan loss provisions play as a part of the overall minimum capital regulatory framework. The paper examines this issue in the Indian context, exploring the available evidence about bank loan loss provisioning in the Indian context. Using data on Indian banks for 1997-2005, evidence is found in favour of both earnings and capital management by Indian banks.
ON HODGE STRUCTURES OF QUASITORIC ORBIFOLDS
Saibal Ganguli 대한수학회 2017 대한수학회지 Vol.54 No.3
We give Hodge structures on quasitoric orbifolds. We define orbifold Hodge numbers and show a correspondence of orbifold Hodge numbers for crepant resolutions of quasitoric orbifolds. In short we extend Hodge structures to a non almost complex setting.
B3S monolayer: prediction of a high-performance anode material for lithium-ion batteries
Jana, Saibal,Thomas, Siby,Lee, Chi Ho,Jun, Byeongsun,Lee, Sang Uck Royal Society of Chemistry 2019 Journal of Materials Chemistry A Vol.7 No.20
<P>To mitigate the ever-growing global temperature rise, renewable energy is needed and use of fossil fuels has to be reduced on an urgent basis. Next-generation renewable energy technology demands electrode materials with suitable structural, electronic, and mechanical properties. Through particle swarm-intelligence and first-principles structure calculations, we have designed a new novel B3S monolayer, which is dynamically, mechanically, and thermally stable and of higher cohesive energy compared to synthesized B2S3 thus ensuring the feasibility of experimental synthesis. As an anode material, the B3S monolayer can be expected to have high performance with high storage capacity (1662 mA h g<SUP>−1</SUP>), low open-circuit voltage (∼0.16 V) and a low lithium diffusion barrier (<I>E</I>a < 0.4 eV). Furthermore, the metallicity of the B3S monolayer is sustained after lithium adsorption, indicating good electrical conductivity and battery operating cycle. Our results clarify that these intriguing properties make B3S monolayer an appealing candidate for anode material in lithium-ion batteries.</P>
A CLASSIFICATION RESULT AND CONTACT STRUCTURES IN ORIENTED CYCLIC 3-ORBIFOLDS
Ganguli, Saibal Korean Mathematical Society 2018 대한수학회논문집 Vol.33 No.1
We prove every oriented compact cyclic 3-orbifold has a contact structure. There is another proof in the web by Daniel Herr in his uploaded thesis which depends on open book decompositions, ours is independent of that. We define overtwisted contact structures, tight contact structures and Lutz twist on oriented compact cyclic 3-orbifolds. We show that every contact structure in an oriented compact cyclic 3-orbifold contactified by our method is homotopic to an overtwisted structure with the overtwisted disc intersecting the singular locus of the orbifolds. In course of proving the above results we prove a classification result for compact oriented cyclic-3 orbifolds which has not been seen by us in literature before.
ON HODGE STRUCTURES OF QUASITORIC ORBIFOLDS
Ganguli, Saibal Korean Mathematical Society 2017 대한수학회지 Vol.54 No.3
We give Hodge structures on quasitoric orbifolds. We define orbifold Hodge numbers and show a correspondence of orbifold Hodge numbers for crepant resolutions of quasitoric orbifolds. In short we extend Hodge structures to a non almost complex setting.
Temperature-dependent lithium diffusion in phographene: Insights from molecular dynamics simulation
Siby Thomas,Saibal Jana,Byeongsun Jun,이치호,Sang Uck Lee 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.81 No.-
It is noteworthy to elucidate the underlying atomistic insights of next-generation battery electrodematerials to overcome the existing constraints associated with its rapid progress. By employing classicalmolecular dynamics (MD) simulations, we have studied the temperature dependent structural, thermomechanical,and Lithium diffusion properties of α- and β-phographene (PhoG) for Lithium-ion battery(LIB) anode applications. Our results show that at 300 K both the PhoGs possess negative thermalexpansion coefficient and is expounded as proof of anharmonicity present in it due to the existence ofpliable bending modes in the out-of-plane direction. The computed ultrahigh stiffness of PhoG helps toprevent the acute lattice expansion issue upon Li intercalation. The study also brings out that Li atomcould freely diffuse on the surface of the PhoGs, and thus a fast Li diffusivity and superior conductivity isobserved. The calculated Li diffusion activation energies (<0.20 eV) of these membranes are lower thanmany of the typical for Li-based graphitic anode with a Li diffusion coefficient of 10 10–10 12cm2 s 1. Inthis regard, the excellent structural and thermo-mechanical stability, and low activation energy barrier inPhoGs assures its application as an anode material in high-performance LIBs.
Khuram Maqsood,Saibal Ganguly,Jayita Pal,Dhanaraj Turunawarasu,Anindya Jyoti Pal 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.7
A novel concept of hybrid cryogenic distillation network has been explored which maximizes the benefitsof both desublimation or solid-vapor based separation as well as distillation or vapor-liquid equilibrium based separationduring the separation of carbon dioxide from methane or natural gas. Process network synthesis has been performedfor four case studies with high carbon dioxide (72 mole%) and medium carbon dioxide (50 mole%) natural gas feedstreams. The benefits of optimal locations for cryogenic packed beds were investigated. A conventional cryogenic networkconsisting of multiple distillation columns with butane as additive for extractive distillation was also studied andpresented in this paper. Process modeling of cryogenic distillation network with MESH equations was attempted usingan integrated dual loop (C+3) convergence and the results were compared with Aspen Plus simulator for benchmarking. The prediction of solidification region was employed using experimental data from literature to avoid solidificationregions in the column. The proposed hybrid cryogenic distillation network showed promising potential for energy andsize reduction.
Dae Hyun Kim,Mukhopadhyay, Saibal,Sung Kyu Lim IEEE 2014 IEEE transactions on computer-aided design of inte Vol.33 No.9
<P>3-D integrated circuits (3-D ICs) are expected to have shorter wirelength, better performance, and less power consumption than 2-D ICs. These benefits come from die stacking and use of through-silicon vias (TSVs) fabricated for interconnections across dies. However, the use of TSVs has several negative impacts such as area and capacitance overhead. To predict the quality of 3-D ICs more accurately, TSV-aware 3-D wirelength distribution models considering the negative impacts were developed. In this paper, we apply an optimal buffer insertion algorithm to the TSV-aware 3-D wirelength distribution models and present various prediction results on wirelength, delay, and power consumption of 3-D ICs. We also apply the framework to 2-D and 3-D ICs built with various combinations of process and TSV technologies and predict the quality of today and future 3-D ICs.</P>
Theoretical Investigations on Structure and Function of Human Homologue hABH4 of E.coli ALKB4
Shankaracharya, Shankaracharya,Das, Saibal,Prasad, Dinesh,Vidyarthi, Ambarish Sharan Korean Society for Bioinformatics 2010 Interdisciplinary Bio Central (IBC) Vol.2 No.3
Introduction: Recently identified human homologues of ALKB protein have shown the activity of DNA damaging drugs, used for cancer therapy. Bioinformatics study of hABH2 and hABH3 had led to the discovery of a novel DNA repair mechanism. Very little is known about structure and function of hABH4, one of the members of this superfamily. Therefore, in present study we are intended to predict its structure and function through various bioinformatics tools. Materials and Methods: Modeling was done with modeler 9v7 to predict the 3D structure of the hABH4 protein. This model was validated with the program Procheck using Ramachandran plot statistics and was submitted to PMDB with ID PM0076284. The 3d2GO server was used to predict the functions. Residues at protein ligand and protein RNA binding sites were predicted with 3dLigandSite and KYG programs respectively. Results and Discussion: 3-D model of hABH4, ALKBH4.B99990003.pdb was predicted and evaluated. Validation result showed that 96.4 % residues lies in favored and additional allowed region of Ramachandran plot. Ligand binding residues prediction showed four Ligand clusters, having 24 ligands in cluster 1. Importantly, conserved pattern of Glu196-X-Pro198- Xn-His254 in the functional domain was detected. DNA and RNA binding sites were also predicted in the model. Conclusion and Prospects: The predicted and validated model of human homologue hABH4 resulted from this study may unveil the mechanism of DNA damage repair in human and accelerate the research on designing of appropriate inhibitors aiding in chemotherapy and cancer related diseases.