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Modified branch-and-bound algorithm for unravelling optimal PMU placement problem for power grid observability: A comparative analysis

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CAAI Transactions on Intelligence Technology 2021年第4期6卷 450-470页

作者： Rohit Babu Saurav Raj Bishwajit dey Biplab Bhattacharyya Department of Electrical and Electronics Enginecring Lendi Institute of Engincering and TechnologyJonnadaAndhra PradeshIndia Department of Electrical Engineering Institute of Chemical Technology-MunbaiMarathwada CampusJalnaMaharashtraIndia Department of lectrical Engineering IndianInstitute of TechnologyDhanbadJharkhandIndia

Safe operation of the power grid requires a complete and robust control network to ensure full observability;However,redundancy measurements can create problems in expense,management,and *** optimal phasor measurement unit(PMU)positioning problem(OPPP)is proposed to limit the number of PMUs deployed in the power grid and ensure the whole grid's observability in the meantime.A modified branch-and-bound algorithm(MBBA)to unravel the OPPP is *** BBA,which uses a single search order to create a binary tree,gives only one solution to the OPPR although more than one optimal solution *** proposed MBBA method consists of two different stages:the vertexes in the search tree are investigated by depth-first search(DFS)in stage 1,and the search route continues as the breadth-first *** stage 1,the LP relaxing problems are solved by dual simplex,and in stage 2,the basic viable solution from stage 1 is used to configure the primary simplex until the optimum solution is *** is formulated as a binary decision variable MBBA model,minimizing linear objective function subject to linear matrix observability *** MBBA model is unravelled using a linear integer-based external approximation *** test systems are used to check the feasibility of the proposed *** software performs simulation based on a number of graph theory-based methods such as DFS,graph-theoretical method,simulated annealing,and recursive *** algorithms are compared to the algorithmic perspective of the proposed MBBA *** test network results confirm the validity of the proposed methodology.

关键词： optimal branch observability

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Identification of genes associated with gall bladder cell carcinogenesis:Implications in targeted therapy of gall bladder cancer

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World Journal of Gastrointestinal Oncology 2023年第12期15卷 2053-2063页

作者： Ishita Ghosh Ruma dey Ghosh Soma Mukhopadhyay Department of Molecular Biology Netaji Subhas Chandra Bose Cancer Research InstituteKolkata 700094India

Gall bladder cancer(GBC)is becoming a very devastating form of hepatobiliary cancer in *** year new cases of GBC are quite high in *** recent advanced multimodality treatment options,the survival of GBC patients is very *** the disease is diagnosed at the advanced stage(with local nodal metastasis or distant metastasis)or surgical resection is inoperable,the prognosis of those patients is very ***,perspectives of targeted therapy are being *** therapy includes hormone therapy,proteasome inhibitors,signal transduction and apoptosis inhibitors,angiogenesis inhibitors,and immunotherapeutic *** such signal transduction inhibitor is the specific short interfering RNA(siRNA)or short hairpin RNA(shRNA).For developing siRNAmediated therapy shRNA,although several preclinical studies to evaluate the efficacy of these key molecules have been performed using gall bladder cells,many more clinical trials are *** date,many such genes have been *** review will discuss the recently identified genes associated with GBC and those that have implications in its treatment by siRNA or shRNA.

关键词： Gall bladder cancer Gene biomarker Targeted therapy siRNA mediated therapy Prognosis Advanced therapy of gall bladder cancer

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An all-optical implementation of Fredkin gate using Kerr effect

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Optoelectronics Letters 2019年第4期15卷 317-320页

作者： Shuvra dey Paromita De Sourangshu Mukhopadhyay Department of Physics The University of Burdwan

Quantum gates are the important breakthrough in current computation and high-end data processing. Several quantum logic gates have been implemented in last few decades. In this paper, the idea of all-optical(photonic) Fredkin gate is proposed, which performs the swapping operation by a control signal. Corresponding simulation is also conducted with MATLAB, which shows the same result as the theoretical prediction.

关键词： An all-optical Fredkin gate using Kerr effect

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Bedload transport from analytical and turbulence phenomenological perspectives

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International Journal of Sediment Research 2019年第6期34卷 509-530页

作者： Subhasish dey Sk Zeeshan Ali Ellora Padhi Department of Civil Engineering Indian Institute of Technology Kharagpur Department of Hydraulic Engineering State Key Laboratory of Hydro-Science and EngineeringTsinghua University Physics and Applied Mathematics Unit Indian Statistical Institute Kolkata

In this paper,we present the dynamics of bedload transport from two different *** are the analytical perspective and the turbulence phenomenological *** bedload transport from the analytical perspective,we highlight the systematic advances in the analytical modelling of bedload transport over the *** advances are principally classified into three broad foundations,namely,the deterministic foundation,that includes the bed shear stress concept,stream power concept,force balance concept and bedform concept,and the probabilistic foundation and the turbulence phenomenological foundation of bedload *** bedload transport from the turbulence phenomenological perspective brings into focus the bedload-induced turbulence phenomenology,including the hydrodynamics of mobile-bed and water-worked bed *** also discuss the recent advances in the biofilm-coated bedload ***,conclusion is drawn,highlighting the major research challenges.

关键词： Bedload transport Fluvial hydraulics Sediment transport Turbulent flow

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Amenability to dry processing of high ash thermal coal using a pneumatic table

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International Journal of Mining Science and Technology 2015年第6期25卷 955-961页

作者： dey Shobhana Gangadhar B. Gopalkrishna S.J. Mineral Processing Division CSIR-National Metallurgical Laboratory Jamshedpur 831007 India Departrnent of Mineral Processing Vsku Pg Centre gellary 5831 lg India

High ash thermal coal from India was used to conduct the dry processing of fine coal using a pneumatic table to evolve a techno-economically novel technique. The fine as-received sample having 55.2g ash was subjected to washability studies at variant densities from 1.4 to 2.2 to assess the amenability to separa- tion. The experiments were conducted using a central composite design for assessing the interactive effects of the variable parameters of a pneumatic table on the product yield and ash content. The performance of the pneumatic table was analyzed in terms of clean coal yield, recovery of combustibles, separation efficiency （Esp） and useful heat value of clean coal. The combustibles of clean coal obtained through a single stage operation at 35% and 38.7% ash were 40% and 63% respectively. However, the two stage processing was more effective in reducing the ash content in the clean coal. The rougher concentrate generated at higher ash level was subsequently processed in different conditions at 35% ash level, and 58g combustibles could be recovered. Hence, two stage processing increases the combustibles by 18 units and the useful heat value of clean coal increases from 1190 kcal/kg to 3750 kcal/kg.

关键词： Dry processingAir flow rateMinimum fluidizing velocityOrganic efficiency

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Regulatory role of long non coding RNAs (lncRNAs) in neurological disorders:From novel biomarkers to promising therapeutic strategies

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Asian Journal of Pharmaceutical Sciences 2021年第5期16卷 533-550页

作者： Nirjhar Bhattacharyya Vedansh Pandey Malini Bhattacharyya Abhijit dey Department of Life Sciences Presidency UniversityKolkataIndia

Long non coding RNAs(lncRNAs) are non-protein or low-protein coding transcripts that contain more than 200 nucleotides. They representing a large share of the cell’s transcriptional output, demonstrate functional attributes viz. tissue-specific expression, determination of cell fate, controlled expression, RNA processing and editing, dosage compensation, genomic imprinting, conserved evolutionary traits etc. These long non coding variants are well associated with pathogenicity of various diseases including the neurological disorders like Alzheimer’s disease, schizophrenia, Huntington’s disease, Parkinson’s disease etc. Neurological disorders are widespread and there knowing the underlying mechanisms become crucial. The lncRNAs take part in the pathogenesis by a plethora of mechanisms like decoy, scaffold, mi-RNA sequestrator, histone modifiers and in transcriptional interference. Detailed knowledge of the role of lncRNAs can help to use them further as novel biomarkers for therapeutic aspects. Here, in this review we discuss regulation and functional roles of lncRNAs in eight neurological diseases and psychiatric disorders, and the mechanisms by which they act. With these, we try to establish their roles as potential markers and viable diagnostic tools in these disorders.

关键词： Non coding rnas Alzheimer’s disease Huntington’s disease Parkinson’s disease Schizophrenia Regulatory

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Application of hopcalite catalyst for controlling carbon monoxide emission at cold-start emission conditions

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第5期6卷 419-440页

作者： Subhashish dey Ganesh Chandra Dhal Devendra Mohan Ram Prasad Department of Civil Engineering Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India Department of Chemical Engineering and Technology Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India

Carbon monoxide(CO) is a poisonous gas particularly to all leaving being present in the *** estimate has shown that the vehicular exhaust contributes the largest source of CO pollution in developed *** to the exponentially increasing number of automobile vehicles on roads,CO concentrations have reached an alarming level in urban *** control this vehicular exhaust pollution,the end-of-pipe-technology using catalytic converters is *** catalysts operating efficiently in a catalytic converter are a challenging class of materials for applications in cold start of engines to maintain indoor air *** the cold start period,the catalytic converter was entirely inactive,because the catalytic converter had not been warmed *** cold start phase is also depending upon the characteristics of vehicles and property of *** increasing cost of noble metals with the increasing number of vehicles motivates the investigation of material concepts to reduce the precious metal content in automotive catalysts or to find a substitute for noble ***(CuMnOx) catalyst could work very well at the low temperature;thus,it can overcome the problem of cold-start emissions if used in a catalytic ***,low cost,easy availability and advanced synthesis methods with stabilizer,promoter,etc.,advocates for the use of hopcalite as an auto exhaust purification *** there are numerous research articles present on this topic until now,no review has been presented for demanding this *** there is a space in this area,and it has been made an attempt to seal this hole and progress the future scope for hopcalite catalyst for purification of exhaust gases by this review.

关键词： Automobile vehicle Hopcalite catalyst Catalytic converter applications Cold start emission Carbon monoxide

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Inhibitor-Based Therapeutics for Treatment of Viral Hepatitis

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Journal of Clinical and Translational Hepatology 2016年第3期4卷 248-257页

作者： Debajit dey Manidipa Banerjee Kusuma School of Biological Sciences Indian Institute of Technology Delhi Hauz Khas New Delhi India

Viral hepatitis remains a significant worldwide threat,in spite of the availability of several successful therapeutic and vaccination *** associated with acute and chronic infections,such as liver failure,cirrhosis and hepatocellular carcinoma,are the cause of considerable morbidity and *** the significant burden on the healthcare system caused by viral hepatitis,it is essential that novel,more effective therapeutics be *** present review attempts to summarize the current treatments against viral hepatitis,and provides an outline for upcoming,promising new *** of novel therapeutics requires an understanding of the viral life cycles and viral effectors in molecular *** such,this review also discusses virallyencoded effectors,found to be essential for virus survival and replication in the host milieu,which may be utilized as potential candidates for development of alternative therapies in the future.

关键词： viral hepatitis Viroporin Inhibitor

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Probabilistic Analysis and Design of HCP Nanowires:An Efficient Surrogate Based Molecular Dynamics Simulation Approach

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Journal of Materials Science & Technology 2016年第12期32卷 1345-1351页

作者： T.Mukhopadhyay A.Mahata S.dey S.Adhikari College of Engineering Swansea UniversitySwanseaUnited Kingdom Department of Materials Science and Engineering Missouri University of Science and TechnologyRollaMOUSA Indian Institute of Science BangaloreIndia Leibniz-Institut fur Polymerforschung Dresden e.V. DresdenGermany

We investigate the dependency of strain rate,temperature and size on yield strength of hexagonal close packed（HCP） nanowires based on large-scale molecular dynamics（MD） simulation.A variance-based analysis has been proposed to quantify relative sensitivity of the three controlling factors on the yield strength of the *** of the major drawbacks of conventional MD simulation based studies is that the simulations are computationally very intensive and economically *** scale molecular dynamics simulation needs supercomputing access and the larger the number of atoms,the longer it takes time and computational *** this reason it becomes practically impossible to perform a robust and comprehensive analysis that requires multiple simulations such as sensitivity analysis,uncertainty quantification and *** propose a novel surrogate based molecular dynamics（SBMD）simulation approach that enables us to carry out thousands of virtual simulations for different combinations of the controlling factors in a computationally efficient way by performing only few MD *** the SBMD simulation approach an efficient optimum design scheme has been developed to predict optimized size of the nanowire to maximize the yield *** the effect of inevitable uncertainty associated with the controlling factors has been quantified using Monte Carlo *** we have confined our analyses in this article for Magnesium nanowires only,the proposed approach can be extended to other materials for computationally intensive nano-scale investigation involving multiple factors of influence.

关键词： hcp-nanowire Yield strength Surrogate Monte Carlo simulation Uncertainty in nanoscale Sensitivity

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Response of Reynolds stresses and scaling behavior of high-order structure functions to a water-worked gravel-bed surface and its implication on sediment transport

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International Journal of Sediment Research 2022年第1期37卷 1-13页

作者： Nadia Penna Ellora Padhi Subhasish dey Roberto Gaudio Dipartimento di Ingegneria Civile Università Della Calabria Department of Civil Engineering Shiv Nadar University Department of Civil Engineering Indian Institute of Technology Kharagpur

The aim of this experimental study is to investigate the interaction between turbulent flow and a gravelbed that mimics the actual roughness structures of a natural bed and its implication on sediment *** particular,the response of the Reynolds stresses and the role of intermittency to the bed roughness is the primary focus of the current *** this end,the flow field,measured with an Acoustice Doppler Velocimeter (ADV),is thoroughly examined,considering the conditional Reynolds shear stresses and the high-order structure functions of *** study results show that the features and the roughness structure of the water-worked gravel-bed (WWGB) have a strong impact on bursting *** reason for this is attributed to the flow layer above the crest in the WWGBs being primarily affected by sweep events rather than ejection events,although the latter events are prevalent in this flow layer in an immobile,man-made,*** coherent structures,which are primarily responsible for sediment transport,also are the key cause of the presence of an intermittency excess that breaks the Kolmogorov self-similarity hypothesis,leading to multi-fractal behavior of the velocity structure functions.

关键词： Water-worked bed Turbulent flow Sweeps Ejections High-order structure functions

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