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Comparison of Ontario’s roundwood and recycled fibre pulp and paper mills’performance using data Envelopment analysis

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Journal of Management Analytics 2021年第2期8卷 222-251页

作者： shashi K.Shahi Mohamed Dia Supply Chain and Operations Management Research Group in Operations Analytics and Decision SciencesDepartment of Finance and OperationsFaculty of ManagementLaurentian UniversitySudburyONP3E 2C6Canada Quantitative Methods and Operations Management Research Group in OperationsAnalytics and Decision SciencesDepartment of Finance and OperationsFaculty of ManagementLaurentian UniversitySudburyONCanada

The pulp and paper industry converts roundwood and recycled fibre,collected from wastepaper into printing and writing papers,and other specialty grades of *** pulp and paper mills in Ontario have been facing extreme competitive pressures,which have affected their performance leading to several mill *** purpose of this study is to evaluate and compare the relative performance of three types of Ontario’s pulp and paper mills(using all fibre,only roundwood fibre,and only recycled fibre).This study uses bootstrap data envelopment analysis in analyzing and comparing the operational efficiency of the Ontario’s pulp and paper mills,with 224 sample data observations over a period of 17 *** results indicate low levels of overall technical and managerial efficiencies in the pulp and paper mills using recycled *** results of the study highlight that the pulp and paper industry needs to divert their attention to streamlining the manufacturing processes,reducing costs,improving raw material usage,and making capital investments in the new and improved technology,in order to improve the operational efficiency and competitiveness of the Ontario’s pulp and paper *** pulp and paper mills using recycled fibre require huge capital investments,especially for installing the latest de-inking *** results of this study provide policy makers with detailed performance analysis so that future input resources can be reallocated to improve the performance of the pulp and paper mills in Ontario.

关键词： bootstrapping data envelopment analysis forest industry recycled fibre roundwood fibre technical efficiency Ontario Canada

ON APPROXIMATE EFFICIENCY FOR NONSMOOTH ROBUST VECTOR OPTIMIZATION PROBLEMS

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Acta Mathematica Scientia 2020年第3期40卷 887-902页

作者： Tadeusz ANTCZAK Yogendra PANDEY Vinay SINGH shashi Kant MISHRA Faculty of Mathematics and Computer Science University of LódźBanacha 2290-238 LódźPoland Department of Mathematics Satish Chandra CollegeBallia 277001India Department of Mathematics National Institute of TechnologyAizawl-796012MizoramIndia Department of Mathematics Banaras Hindu UniversityVaranasi-221005India

In this article,we use the robust optimization approach(also called the worst-case approach)for findingε-efficient solutions of the robust multiobjective optimization problem defined as a robust(worst-case)counterpart for the considered nonsmooth multiobjective programming problem with the uncertainty in both the objective and constraint ***,we establish both necessary and sufficient optimality conditions for a feasible solution to be anε-efficient solution(an approximate efficient solution)of the considered robust multiobjective optimization *** also use a scalarizing method in proving these optimality conditions.

关键词： Robust optimization approach robust multiobjective optimization ε-efficient solution ε-optimality conditions scalarization

Design and simulation of nanoscale double-gate TFET/tunnel CNTFET

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Journal of Semiconductors 2018年第4期39卷 34-38页

作者： shashi Bala Mamta Khosla Department of Electronic and Communication Engineering Dr B R Ambedkar Natrional Institute of Technology Jalandhar-144011 India

A double-gate tunnel field-effect transistor （DG tunnel FET） has been designed and investigated for various channel materials such as silicon （Si）, gallium arsenide （GaAs）, alminium gallium arsenide （A1xGa1-xAs） and CNT using a nano ViDES Device and TCAD SILVACO ATLAS simulator. The proposed devices are com- pared on the basis of inverse subthreshold slope （SS）, ION/IoFF current ratio and leakage current. Using Si as the channel material limits the property to reduce leakage current with scaling of channel, whereas the A1xGa1-xAs based DG tunnel FET provides a better ION/IOFF current ratio （2.51 × 10^6） as compared to other devices keeping the leakage current within permissible limits. The performed silmulation of the CNT based channel in the double-gate tunnel field-effect transistor using the nano ViDES shows better performace for a sub-threshold slope of 29.4 mV/dec as the channel is scaled down. The proposed work shows the potential of the CNT channel based DG tunnel FET as a futuristic device for better switching and high retention time, which makes it suitable for memory based circuits.

关键词： band-to-band tunneling (BTBT) double gate (DG) silicon (Si) gallium arsenide (GaAs) aluminum gallium arsenide (AlxGa1 xAs) tunnel field effect transistor (FET) carbon nanotube (CNT)

Parametric database approach integration for handling temporal data in GIS

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Geo-Spatial Information Science 2013年第2期16卷 91-99页

作者： Sharma SUGAM Gadia shashi Tim UDOYARA SUNDAY Department of Computer Science Iowa State UniversityAmesIA 50010USA Department of Agricultural and Biosystems Engineering Iowa State UniversityAmesIA 50010USA

In large spatial,temporal,and spatio-temporal databases,the concept of dimensions–time and space–is central and their efficient processing has always been a great concern.A Geographic Information System(GIS)is widely known for its efficient and sophisticated handling of the spatial databases;however,integration of the time domain introduces additional *** research is ongoing in this *** numerous approaches have already been proposed in the literature to address the time-related challenges in GIS community,such as the development of temporal GIS data models,this study contributes to these ongoing efforts through extensions to the Parametric Data *** database approaches(Parametric Data Model)have been developed to handle dimensional data such as space,time,belief,*** this study,the time dimension is of specific interest and we propose the integration of parametric approaches to GIS to absorb the temporal *** temporal processing of the data is done using parametric approaches that address the limitation of GIS to support temporal queries and temporal analysis of *** the AutoConViz tool,developed for spatio-temporal data modeling and visualization,results can be directly integrated into standard GIS software programs such as ArcGIS and further processed seamlessly along with and in a similar manner to other attributes.

关键词： GML shapefile AutoConViz temporal spatial parametric data model GIS

Pathological evaluation of pancreatic exocrine glands in experimental fluorosis

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Asian Pacific Journal of Tropical Medicine 2010年第1期3卷 36-40页

作者： shashi Aggarwal Sharma N Bhardwaj M Department of Zoology Punjabi University

Objective:To monitor the pathological alterations in pancreas of rat during experimental fluorosis. Methods:Sixty Sprague Dawley albino rats of both sexes were divided into 12 experimental groups and one control *** rats of control group were administered subcutaneously double distilled water 1 mL/kg bw *** experimental groups were injected with 30,45,and 75 mg NaF/kg bw/*** experimental period was divided into 4 phases at interval of 15,22,30,and 36 *** were sacrificed from each group at the end of 16,23,31,and 37 ***: The following changes were observed in this study:(1) Pathological examination of pancreas after 15 days of fluoride treatment revealed:hypertrophy of acini,leucocytes infilteration and pycnouc nuclei due to necrosis of acini in group 1;uremic alterations,invulsion and infoldings of reticular layer of islets of Langerhans in group 2;and a decrease in number of acini and interlobular connective tissues resulted in an increase in intercellular spaces in pancreas of rats in group 3.(2)Hyalinization and hypertrophy in the lobules of acini and hyperplasia and hypertrophy in intercalated duct with mucinous secretion in pancreas of rat of group 4;squamous metaplasia of pancreatic duct,adenoma of pancreas,hemorrhagic necrosis in group 5;and hyperplasia of acini and reduction in number of pancreatic islets in group 6.(3) Disorganization and atrophy of pancreatic lobules and presence of vacuoles in a group of six were visible in pancreas of rats in group 7;acute pancreatic and lamellated inflammatory cells in test rats of group 8;and islet adenoma and decrease in number of islets cells,and exudation in acini were noticed in experimental rats of group 9.(4) In the last phase of experimentation,atrophic alterations in pancreatic acini,invulsions,and necrosis was prominent in group 10,deep inflammation and proliferation of connective tissue of pancreas in experimental group 11,and periodical fibrosis, hyperplasia of acini,degener

关键词： Acini Albino rat Exocrine gland Experimental fluorosis Pancreas Sodium fluoride

Development of islet organoids from human induced pluripotent stem cells in a cross-linked collagen scaffold

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Cell Regeneration 2021年第1期10卷 388-399页

作者： Shruti Sandilya shashi Singh CSIR-Centre for Cellular and Molecular Biology Uppal RoadHyderabad 500007India

Islets organoids would have value in the cell replacement therapy for diabetes apart from usual personalized drug screening *** of a large number of Islets like clusters,with ability to respond to glucose stimulation appears to be an ideal *** this study we have generated islet organoids with the ability to respond to glucose stimulation by insulin *** source of the cells was an iPSC cell line differentiated into the pancreatic *** cells were assembled in matrigel or cross-linked collagen scaffold and compared for their efficacy to release insulin upon stimulation with *** assembled organoids were examined by immunohistochemistry and expression of the relevant marker *** organoids showed expression of islet like markers in both-matrigel and crosslinked collagen *** islet organoids in both the cases showed release of insulin upon stimulation with *** crosslinked collagen scaffold is quite stable and supports islet cells growth and function.

关键词： Endocrine Exocrine Marker genes Crosslinked collagen Functional Insulin release

AutoConViz:automating the conversion and visualization of spatio-temporal query results in GIS

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Geo-Spatial Information Science 2012年第2期15卷 85-93页

作者： Sugam SHARMA Udoyara Sunday TIM shashi GADIA Department of Computer Science Iowa State UniversityAmesIA 50010USA Department of Agricultural and Bio-systems Engineering Iowa State UniversityAmesIA 50010USA

In recent years,large multifaceted spatial,temporal,and spatio-temporal databases have attained significant popularity and importance in the database *** order to perform preliminary investigation,exploratory visual analysis of such data-sets is highly *** facilitate the convenient and efficient visualization,scientists and practitioners often need to convert the spatial component of the data-set into a more usable *** among the various formats available today in spatial data science community,Geographical Markup Language(GML)adheres to its central position and is of our interest in this *** development of a tool to satisfy the spatial format conversion needs tailored to every user’s needs from scratch is difficult,time-consuming,and requires skills not easy to *** developed Auto-ConViz,to solve the issue stated *** accepts the spatial component in GML format,converts that into shapefile format,and facilitates informative and automated interaction with the *** supports basic query and geospatial analysis and visualization tasks and offers functionalities such as zooming,panning,and feature ***,our software leverages navigation to classical ArcGIS software interface for users interested in more intensive *** serves both the database and geographical information system communities to explore insights of spatiotemporal databases and will help to further geospatial research and development.

关键词： GML shapefile AutoConViz automation visualization GIS

On Semi-infinite Mathematical Programming Problems with Equilibrium Constraints Using Generalized Convexity

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Journal of the Operations Research Society of China 2020年第4期8卷 619-636页

作者： Bhuwan Chandra Joshi shashi Kant Mishra Pankaj Kumar Centre for Interdisciplinary Mathematical Sciences Department of Science&TechnologyInstitute of ScienceBanaras Hindu UniversityVaranasi 221005India Department of Mathematics Institute of ScienceBanaras Hindu UniversityVaranasi 221005India Mahila Maha Vidyalaya Banaras Hindu UniversityVaranasi 221005India

In this paper,we consider semi-infinite mathematical programming problems with equilibrium constraints(SIMPPEC).By using the notion of convexificators,we establish sufficient optimality conditions for the *** formulate Wolfe and Mond–Weir-type dual models for the SIMPPEC under the invexity and generalized invexity *** and strong duality theorems are established to relate the SIMPPEC and two dual programs in the framework of convexificators.

关键词： Duality Convexificators Generalized invexity Constraint qualification

Comparisons of three data storage models in parametric temporal databases

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Journal of Central South University 2013年第7期20卷 1919-1927页

作者： Seo-Young NOH shashi K. GADIA Haengjin JANG Supercomputing Center Korea Institute of Science and Technology Information Department of Computer Science Iowa State University

The parametric temporal data model captures a real world entity in a single tuple, which reduces query language complexity. Such a data model, however, is difficult to be implemented on top of conventional databases because of its unfixed attribute sizes. XML is a matured technology and can be an elegant solution for such challenge. Representing data in XML trigger a question about storage efficiency. The goal of this work is to provide a straightforward answer to such a question. To this end, we compare three different storage models for the parametric temporal data model and show that XML is not worse than any other approaches. Furthermore, XML outperforms the other storages under certain conditions. Therefore, our simulation results provide a positive indication that the myth about XML is not true in the parametric temporal data model.

关键词：时空数据库模型参数数据存储时空数据模型 XML 现实世界查询语言数据结构