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Journal of Management Analytics 2022年第1期9卷 17-31页

作者： Hong chena Ling Li Yong Chen School of Business and Economics Indiana University EastRichmondINUSA College of Business and Public Administration Old Dominion UniversityNorfolkVAUSA Department of Management Information Systems and Data Analytics Texas A&M International UniversityLaredoTXUSA

In recent years,the telecom industry has faced digital transformation challenges and fierce market *** challenges push telecom operators to grow their subscriber bases by offering lower prices and improved services and new features,which puts pressure on operators’*** addition,the rise of Internet companies gradually erodes the profit of the traditional telecom ***,paying attention to the critical factors impacting firm sustainable growth can help operators get out of the *** on the resource-based view(RBV),this study explores the factors that influence the firm sustainable *** regression model is applied to empirically test the hypotheses with longitudinal time-series panel data from major telecom operators in *** study provides empirical evidence for sustainable growth research and useful insights for practitioners on the way to keep sustainable growth.

关键词： Sustainable growth telecom operator multiple regression model

A Study for the Influence of the Location of PCMs Assembly System on Improving Thermal Environment inside Disaster-Relief Temporary Houses

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Journal of Renewable Materials 2021年第7期9卷 1239-1252页

作者： Caixia Wang Xiao Huang Hongqing chena Weijie Liang State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430061China Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610041China

Currently,people pay more and more attention to the transitional resettlement of victims after various natural *** is an urgent need for a large number of temporary houses to resettle the victims after natural ***-relief temporary houses(DTHs)played an important role in the post-disaster resettlement in the past,which can not only be produced on a large scale,but also can be quickly and conveniently erected,which were the main means to solve the problem of transitional ***,due to their temporary nature,there was no extra energy consuming system installed in the DTHs *** the indoor thermal environment inside the DTHs was severe in *** this study,combined with the field experimental tests of the DTHs in Wenchuan Earthquake and Lushan Earthquake and the experimental study of the full-size DTH,it found that the thermal environment inside the DTH was intolerably high in *** had negative impact on *** order to improve the thermal environment inside DTHs during post-disaster period which lacked of extra energy resources,this study used the method of combining phase change materials(PCMs)with walls of the DTH to explore its feasibility and *** results showed that PCMs could effectively improve the thermal environment inside the DTH in ***,the difference of the composite positions between PCMs and the wall affected the improvement *** energy release rate of the PCMs assembly system(PAS)varied according to the positions of the PCMs.

关键词： Disaster-relief temporary houses(DTHs) phase change materials(PCMs) indoor thermal environment

Design and validation of the THMC China-Mock-Up test on buffer material for HLW disposal

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Journal of Rock Mechanics and Geotechnical Engineering 2014年第2期6卷 119-125页

作者： Yuemiao Liu Like Ma Dan Ke Shengfei Cao Jingli Xie Xingguang zhao Liang chena Panpan Zhang Beijing Research Institute of Uranium Geology CNNC Key Laboratory on Geological Disposal of High-level Radioactive Waste

According to the preliminary concept of the high-level radioactive waste （HLW） repository in China, a large-scale mock-up facility, named China-Mock-Up was constructed in the laboratory of Beijing Research Institute of Uranium Geology （BRIUG）. A heater, which simulates a container of radioactive waste, is placed inside the compacted Gaomiaozi （GMZ）-Na-bentonite blocks and pellets. Water inflow through the barrier from its outer surface is used to simulate the intake of groundwater. The numbers of water injection pipes, injection pressure and the insulation layer were determined based on the nu- merical modeling simulations. The current experimental data of the facility are herein analyzed. The experiment is intended to evaluate the thermo-hydro-mechano-chemical （THMC） processes occurring in the compacted bentonite-buffer during the early stage of HLW disposal and to provide a reliable database for numerical modeling and further investigation of engineered barrier system （EBS）, and the design of HLW repository.

关键词： High-level radioactive waste (HLW) Mock-Up test Numerical modeling Bentonite

A novel business analytics approach and case study-fuzzy associative classifier based on information gain and rule-covering

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Journal of Management Analytics 2014年第1期1卷 1-19页

作者： Yue Ma Guoqing chena Qiang Wei Research Center for Contemporary Management Key Research Institute of Humanities and Social Sciences at Universities School of Economics and Management Tsinghua UniversityBeijing 100084China

Associative classification has attracted remarkable research attention for business analytics in recent years due to its merits in accuracy and *** is deemed meaningful to construct an associative classifier with a compact set of rules(i.e.,compactness),which is easy to understand and use in decision *** paper presents a novel approach to fuzzy associative classification(namely Gain-based Fuzzy Rule-Covering classification,GFRC),which is a fuzzy extension of an effective classifier *** GFRC,two desirable strategies are introduced to enhance the compactness with *** strategy is fuzzy partitioning for data discretization to cope with the‘sharp boundary problem’,in that simulated annealing is incorporated based on the information entropy measure;the other strategy is a data-redundancy resolution coupled with the rulecovering *** experiments show that GFRC had good accuracy,and was significantly advantageous over other classifiers in ***,GFRC is applied to a real-world case for predicting the growth of sellers in an electronic marketplace,illustrating the classification effectiveness with linguistic rules in business decision support.

关键词： associative classification information gain fuzzy partitioning simulated annealing rule-covering

Environmental Sustainability of Water Footprint in China' Mainland

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Geography and Sustainability 2020年第1期1卷 8-17页

作者： Junguo Liu Dandan zhao Ganquan Mao Wenhui Cui He chena Hong Yang School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Water&Development Research Group Department of Built EnvironmentAalto UniversityPO Box 15200Espoo 00076Finland Department of Systems Analysis Integrated Assessment and ModellingSwiss Federal Institute for Aquatic Science and Technology(Eawag)Dübendorf 8600Switzerland

Water footprint(WF)measures human appropriation of water resources for consumptive use of surface and ground water(blue WF)and soil water(green WF)and for assimilating polluted water(grey WF).Questions have been often asked about the exact meaning behind the numbers from WF ***,to date environmental sustainability of WF has never been assessed at the sub-national level over *** study evaluated the environmental sustainability of blue,green and grey WF for China’s 31 mainland provinces in 2002,2007 and 2012,and identified the unsustainable ***,the total WF increased by 30%between 2002 and *** growth can be attributed to the increase of grey WF because the green and blue WF showed only a slight *** all provinces investigated in 2012,eleven showed unsustainable blue WF(sustainability index SI<0),which were mainly located in the North China *** were 12 provinces that displayed unsustainable green WF,and they were distributed in China’s southern and southeastern *** grey WF was not sustainable in approximately two third of provinces(19),which were mainly located in China’s middle and northern regions and Guangdong *** than half of China’s provinces showed trends of improved SI of green and blue WF from 2002 to ***,the SI of grey WF decreased in almost two third of *** levels of WF sustainability were due to water scarcity and pollution,which intensify the degradation of local rivers and ecosystems and make restoration more *** results shed light on the policy making needed to improve sustainable water management,and ecological restoration of hotspot regions.

关键词： Green water Blue water Grey water Sustainable development Ecological restoration

Prevalence and methodologies for detection,characterization and subtyping of Listeria monocytogenes and *** in foods and environmental sources

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Food Science and Human Wellness 2017年第3期6卷 97-120页

作者： Jin-Qiang chena Patrick Regan Pongpan Laksanalamai Stephanie Healey Zonglin Hua Winchester Engineering Analytical Center(WEAC)HFR-NE460Office of Regulatory AffairsUS Food and Drug Administration109 Holton StreetWinchesterMA 01890USA MD DHMH Laboratories Administration Division of MicrobiologyRoom 5281770 Ashland Ave.BaltimoreMD 21205USA

Listeria monocytogenes,one of the most important foodborne pathogens,can cause listeriosis,a lethal disease for ***,which is closely related to ***,is also widely distributed in nature and infects mainly warm-blooded ruminants,causing economic ***,there are high priority needs for methodologies for rapid,specific,cost-effective and accurate detection,characterization and subtyping of *** and *** in foods and environmental *** this review,we(A)described *** and ***,world-wide incidence of listeriosis,and prevalence of various *** strains in food and environmental sources;(B)comprehensively reviewed different types of traditional and newly developed methodologies,including culture-based,antigen/antibody-based,LOOP-mediated isothermal amplification,matrix-assisted laser desorption ionization-time of flight-mass spectrometry,DNA microarray,and genomic sequencing for detection and characterization of *** in foods and environmental sources;(C)comprehensively summarized different subtyping methodologies,including pulsed-field gel electrophoresis,multi-locus sequence typing,ribotyping,and phage-typing,and whole genomic sequencing *** subtyping of *** strains from food and environmental sources;and(D)described the applications of these methodologies in detection and subtyping of *** in foods and food processing facilities.

关键词： Foodborne pathogens Listeria monocytogenes Listeria ivanovii Molecular characterization Subtyping

A simple method for the isolation and purification of resveratrol from Polygonum cuspidatum

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Journal of Pharmaceutical Analysis 2013年第4期3卷 241-247页

作者： Dong-Geng Wanga Wen-Ying Liub Guang-Tong chena Medical School Nan Tong University Department of Pharmaceutical Analysis China Pharmaceutical University

Resveratrol, a polyphenol compound with strong biological activity, has been widely used in medicine, health products and cosmetic industries. It is also the main active component of Polygonurn cuspidatum, a well-known traditional Chinese medicine. We developed a simple and effective method for the preparation of resveratrol from P. cuspidatum. The whole preparative process consisted of reflux extraction, filtering, hydrolyzing, liquid-liquid extraction and eluting. Filtering is to remove non polar or less polar compounds and debris fragments from the extract. Hydrolyzing is to transform polydatin to resveratrol to improve the yield of resveratrol. Eluting is to remove impurities including strong acidic and water-soluble compounds. By acid hydrolysis of glycoside （polydatin）, the yield of resveratrol increased about 4-fold. The extraction recovery in different stages was high, and the content of resveratrol in the final product was over 73.8%. Compared with other methods reported, this technology is eco-friendly, easier to perform, and also has a lower cost.

关键词： Potygonum cuspidaturn Resveratrol Solvent extraction Purification

Novel polymer acceptors achieving 10.18% efficiency for all-polymer solar cells

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Journal of Energy Chemistry 2021年第2期30卷 63-68,I0003页

作者： Shaorong Huang Feiyan Wu Zuoji Liu Yongjie Cui Lie chena Yiwang Chen College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang University.Nanchang 330031JiangxiChina Institute of Advance Scientific Research(iASR) Jiangxi Normal University99 Ziyang AvenueNanchang 330022JiangxiChina State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and Engineering Donghua UniversityShanghai 201620China

Polymer acceptors based on extended fused ring p skeleton has been proven to be promising candidates for all-polymer solar cells(all-PSCs), due to their remarkable improved light absorption than the traditional imide-based polymer acceptors. To expand structural diversity of the polymer acceptors, herein,two polymer acceptors PSF-IDIC and PSi-IDIC with extended fused ring p skeleton are developed by copolymerization of 2,20-((2 Z,20 Z)-((4,4,9,9-tetrahexadecyl-4,9-dihydro-s-indaceno [1,2-b:5,6-b']dithio phene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1 H-indene-2,1-diylidene))dimalononitrile(IDIC-C16) block with sulfur(S) and fluorine(F) functionalized benzodithiophene(BDT) unit and silicon(Si) atom functionalized BDT unit, respectively. Both polymer acceptors exhibit strong light *** PSF-IDIC exhibits similar energy levels and slightly higher absorption coefficient relative to the PSi-IDIC. After blended with the donor polymer PM6, the functional atoms on the polymer acceptors show quite different effect on the device performance. Both of the acceptors deliver a notably high open circuit voltage(V_(OC)) of the devices, but PSi-IDIC achieves higher V OCthan PSF-IDIC. All-PSC based on PM6:PSi-IDIC attains a power conversion efficiency(PCE) of 8.29%, while PM6:PSF-IDIC-based device achieves a much higher PCE of 10.18%, which is one of the highest values for the all-PSCs reported so far. The superior device performance of PM6:PSF-IDIC is attributed to its higher exciton dissociation and charge transport, decreased charge recombination, and optimized morphology than PM6:PSi-IDIC counterpart. These results suggest that optimizing the functional atoms of the side chain provide an effective strategy to develop high performance polymer acceptors for all-PSCs.

关键词： All-polymer solar cells Polymer acceptor Functional atoms Power conversion efficiency

Acquired Cardiomyopathy Caused by Cardiac Tsc1 Deficiency

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Journal of Genetics and Genomics 2014年第2期41卷 73-77页

作者： Yi chena Fang Wang Chunjia Li Lianmei Wang Hongbing Zhang Hongbing Yan Department of Cardiology Beijing An Zhen HospitalCapital Medical University Department of Physiology Institute of Basic Medical Sciences and School of Basic MedicinePeking Union Medical College and Chinese Academy of Medical Sciences Center for Coronary Heart Disease Cardiovascular Institute & Fu Wai HospitalPeking Union Medical College and Chinese Academy of Medical Sciences

Cardiomyopathies are myocardial disorders with enlarged, thick, or rigid cardiac muscles. Because no effective treatment is available to prevent the deterioration of the myocardium function, the prognosis of cardiomyopathy is usually poor. Cardiomyopathies can be inherited or acquired. A number of genes associated with inherited cardiomyopathy, such as the genes encoding for sarcomeric, cytoskeletal,

关键词： than Acquired Cardiomyopathy Caused by Cardiac Tsc1 Deficiency mTOR BNP MyHC