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Journal of Systems Science and Systems Engineering 2008年第3期17卷 277-296页

作者： mei cao Qingyu ZHANG Department of Business and Economics University of Wisconsin - Superior Superior W154880 USA College of Business Arkansas State University State University AR 72467 USA

To cope with an increasingly turbulent environment, manufacturing firms increasingly implement integration practices to enhance flexibility in the production process. This research develops a framework to explore the relationships among organizational integration practices, manufacturing flexibility, and competitive advantage. The study develops valid and reliable instruments to measure these constructs, and it applies structural equation modeling to test relationships among these variables using a large sample. The results indicate strong, positive, and direct relationships between organizational integration practices and manufacturing flexibility, and between manufacturing flexibility and competitive advantage. The results also indicate that organizational integration practices enhance competitive advantage directly as well as indirectly by facilitating manufacturing flexibility.

关键词： Organizational integration practice flexibility competitive advantage survey research structural equation modeling

Modification and validation of a new method to improve the accuracy of MODIS-derived dew point temperature over China's Mainland

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International Journal of Digital Earth 2023年第1期16卷 3513-3535页

作者： Wenbin Zhu and mei cao Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China State Key Laboratory of Plateau Ecology and Agriculture Qinghai UniversityXiningPeople’s Republic of China School of Information Engineering China University of GeosciencesBeijingPeople’s Republic of China

MODIS atmospheric profile products(MOD07_L2 and MYD07_L2)have been widely used for near-surface dew point temperature(T_(d))***,their accuracy over large scale has seldom been *** this study,we validated these two products comprehensively against 2153 stations over China's ***07_L2 was suggested by our study because it achieved higher accuracy in either of two frequently-used *** be specific,the root-meansquare error(RMSE)achieved by MOD07_L2 and MYD07_L2 was 5.82 and 7.42℃,*** this basis,a recent ground-based correction method was modified to further improve their *** focus is to investigate whether this ground-based approach is applicable to large-scale remote sensing *** results show that this new method showed great potential for T_(d) estimation independently from ground *** the introduction of MODIS land surface products,the RMSE it achieved for MOD07_L2 and MYD07_L2 was 5.23 and 5.59℃,*** analysis shows that it was particularly useful in capturing the annual average T_(d) *** R2,RMSE,and bias of annual average daily mean T_(d) estimates were 0.95,1.84℃,and 0.53℃,and those achieved for annual average instantaneous T_(d) estimates were 0.94,2.09℃,and 0.75℃,respectively.

关键词： Dew point temperature relative humidity atmospheric profiles MODIS remote sensing

Current cancer situation in China:good or bad news from the 2018 Global Cancer Statistics?

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Cancer Communications 2019年第1期39卷 202-213页

作者： Rui-mei Feng Yi-Nan Zong Su-mei cao Rui-Hua Xu Department of Cancer Prevention Research Center State Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineSun Yat-Sen University Cancer Center651 Dongfeng Road EastGuangzhou 510060GuangdongP.R.China Department of Medical Oncology State Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineSun Yat-Sen University Cancer Center651 Dongfeng Road EastGuangzhou 510060GuangdongP.R.China

Cancer is the leading cause of death in China and depicting the cancer pattern of China would provide basic knowhows on how to tackle it more *** this study we have reviewed several reports of cancer burden,including the Global cancer statistics 2018 and Cancer statistics in China,2015,along with the GLOBCAN 2018 online database,to investigate the differences of cancer patterns between China,the United States(USA)and the United Kingdom(UK).An estimated 4.3 million new cancer cases and 2.9 million new cancer deaths occurred in China in *** to the USA and UK,China has lower cancer incidence but a 30%and 40%higher cancer mortality than the UK and USA,among which 36.4%of the cancer-related deaths were from the digestive tract cancers(stomach,liver,and esophagus cancer)and have relatively poorer *** comparison,the digestive cancer deaths only took up≤5%of the total cancer deaths in either USA or *** reasons for the higher mortality in China may be the low rate of early-stage cancers at diagnosis and non-uniformed clinical cancer treatment strategies performed by different *** is undergoing the cancer transition stage where the cancer spectrum is changing from developing country to developed country,with a rapidly increase cancer burden of colorectal,prostate,female breast cancers in addition to a high occurrence of infection-related and digestive *** incidence of westernized lifestyle-related cancers in China(*** cancer,prostate,bladder cancer)has risen but the incidence of the digestive cancers has decreased from 2000 to *** estimated 40%of the risk factors can be attributed to environmental and lifestyle factors either in China or other developed *** smoking is the single most important carcinogenic risk factor in China,contributing to~24.5%of cancers in *** infection is another important preventable cancer contributor which is responsible for~17%of *** prevent

关键词： GLOBCAN 2018 Cancer pattern China USA UK Carcinogenic risk factor Tobacco smoking Chronic infection Westernized lifestyles Cancer control strategies

C^(2)S:Class-aware client selection for effective aggregation in federated learning

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High-Confidence Computing 2022年第3期2卷 7-15页

作者： mei cao Yujie Zhang Zezhong Ma Mengying Zhao School of Computer Science and Technology Shandong UniversityJinanChina State Key Laboratory of High-End Server&Storage Technology JinanChina

Federated learning is proposed to train distributed data in a safe manner by avoiding to send data to *** server maintains a global model and sends it to clients in each communication round,and then aggregates the updated local models to derive a new global ***,the clients are randomly selected in each round and aggregation is based on weighted *** show that the performance on IID data is satisfactory while significant accuracy drop can be observed for Non-IID *** this paper,we explore the reasons and propose a novel aggregation approach for Non-IID data in federated ***,we propose to group the clients according to classes of data they have,and select one set in each communication *** models from the same set are averaged as usual and the updated global model is sent to next group of clients for further *** this way,the parameters are only averaged on similar clients and passed among different *** shows that the proposed scheme has advantages in terms of model accuracy and convergence speed with highly unbalanced data distribution and complex models.

关键词： Federated learning Non-IID data Aggregation Client selection

Microstructure and stress-rupture property of an experimental single crystal Ni-base superalloy with different heat treatments

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Rare Metals 2014年第2期33卷 144-148页

作者： Jing-Yang Chen La-mei cao Ming Xue Li-Jun Liu Science and Technology on Advanced High Temperature Structural Materials Laboratory Beijing Institute of Aeronautical Materials

The influence of heat treatment on the microstructure and stress-rupture property at 1,100 °C/140 MPa was investigated in a 5.0 wt% Re containing experimental single crystal Ni-base superalloy. The results indicate that the γmorphology is nearly cuboidal in the dendrite core after conventional heat treatment. The lattice misfit of alloy becomes more negative after modified heat treatment and results in more cuboidal γ precipitates than that after conventional heat treatment. The increased stress-rupture life after modified heat treatment is attributed to higher γ volume fraction, more negative lattice misfit, well-rafted structure, and narrower c channel width.

关键词： Superalloy Heat treatment γprecipitate Lattice misfit Stress-rupture property

Treadmill training improves neurological deficits and suppresses neuronal apoptosis in cerebral ischemic stroke rats

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Neural Regeneration Research 2019年第8期14卷 1387-1393页

作者： Li-mei cao Zhi-Qiang Dong Qiang Li Xu Chen Department of Neurology Shanghai No.8 People’s Hospital

RehabilNation training is believed to be beneficial to patients with stroke, but its molecular mechanism is still unclear. Rat models of cerebral ischemic stroke were established by middle cerebral artery occlusion/reperfusion, and then received treadmill training of different intens让ies, twice a day for 30 minutes for 1 week. Low-intensity training was conducted at 5 m/min, with a 10-minute running, 10-minute rest, and 10-minute running cycle. In the moderate-intensity training, the intensity gradually increased from 5 m/min to 10 m/min in 5 minutes, with the same rest cycle as above. In high-intensity training, the intensity gradually increased from 5 m/min to 25 m/min in 5 minutes, with the same rest cycle as above. The Bederson scale was used to evaluate the improvement of motor function. Infarct volume was detected using 2,3,5-triphenyltetrazolium chloride staining. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining was applied to detect the apoptosis of nerve cells in brain tissue. Western blot assay was employed to analyze the activation of cyclic adenosine monophosphate (cAMP)/protein kinase A and Akt/glycogen synthase kinase-3卩 signaling pathways in rat brain tissue. All training intensities reduced the neurological deficit score, infarct volume, and apoptosis in nerve cells in brain tissue of stroke rats. Training intensities activated the cAMP/protein kinase A and Akt/glycogen synthase kinase-3 beta signaling pathways. This activation was more obvious with higher training intensities. These changes were reversed by intracerebroventricular injection of protein kinase A inhibitor Rp-cAMP. Our findings indicate that the neuroprotective effect of rehabilitation training is achieved via activation of the cAMP/ protein kinase A and Akt/glycogen synthase kinase-3 beta signaling pathways. This study was approved by the Ethics Committee of Animal Experimentation in Shanghai No. 8 Peoples Hospital, China.

关键词： nerve regeneration ischemic stroke treadmill training neuronal deficit apoptosis cyclic adenosine monophosphate protein kinase A glycogen synthase kinase-3^ neuroprotective effect neural regeneration

Visible-light-mediated external-reductant-free reductive cross coupling of benzylammonium salts with(hetero)aryl nitriles

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Science China Chemistry 2019年第11期62卷 1519-1524页

作者： Meng Miao Li-Li Liao Guang-mei cao Wen-Jun Zhou Da-Gang Yu Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China College of Chemistry and Chemical Engineering Neijiang Normal UniversityNeijiang 641100China

Herein we report a novel visible-light-mediated external reductant-free reductive cross coupling for the construction of C sp2–C sp3 bonds.A variety of benzylammonium salts underwent selective coupling with(hetero)aryl nitriles to deliver important diarylmethanes under mild reaction ***,photocatalysts can be omitted for many cases,which might involve the electron donor acceptor(EDA)*** studies indicated benzylic radicals might be involved as the key ***,the in situ generated NMe3 via cleavage of C–N bond in ammonium salts acts as the electron donor,thus avoiding the use of external-reductant.

关键词： reductive cross coupling visible light external-reductant-free

Interaction of Photoactive[Fe(CN)_6]^(4-) with TiO_2 Anatase(101) Surface:A Periodic Density Functional Theory Study

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Chinese Journal of Structural Chemistry 2007年第3期26卷 361-366页

作者： XU Ying CHEN Wen-Kai cao mei-Juan LIU Shu-Hong LI Jun-Qian Department of Chemistry Fuzhou University Fuzhou Fujian 350002 China

The plane-wave pseudopotential function method, based on density-functional theory, has been used to calculate the adsorption, electronic band structures, orbitals and optical absorption spectrum of [Fe（CN）6]^4- on TiOz anatase（101） surface. Our calculations reveal that the surface-modified anatase system has large adsorption energy and a much narrower band gap. [Fe（CN）6]^4- adsorption on the （101） surface could lead to a large red shift of the anatase optical absorption threshold, which extends into a visible region significantly. The calculated results are in agreement with the experiment and other theoretical studies reasonably. It is very important for the understanding and further development ofphotovoltaic materials that are active under visible light.

关键词： density functional theory (DFT) [Fe(CN)6]^4- anatase(101) surface adsorption absorption

Linearity optimization of edge filter demodulators in FBG_s

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Optoelectronics Letters 2008年第3期4卷 193-195页

作者： LI Dong-sheng SUI Qing-mei cao Yu-qiang Optical Fiber Sensor Technology and Engineering Research Center Shandong University Jinan 250061 China

A kind of electric circuit is improved to optimize the linearity of edge filter demodulators in FBG .By using a logarithm amplifier and an extraction operation, the linear range of optimized edge filter demodulators has been broadened effectively, and the requirement of optical filter＇s linear range has been reduced. Theoretical analyses and the simulation results indi-cated that the linear range of optimized edge fdter demodulator＇s covers the whole transition region of the edge filter, while a strict linearity of the optical filter is not necessary.

关键词：光纤解调器线性分析分析方法

Two New Antibacterial Flavanones from Sophora flavescens

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Chinese Chemical Letters 2006年第8期17卷 1048-1050页

作者： mei Ai cao Xiao Bai SUN Pei Hua ZHAO Cheng Shan YUAN State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000

Two new lavandulylated flavanones,（2R, 3R）-8-1avandulyl-2＇-methoxy-5, 7, 4＇-trihydroxyflavanonol （1） and 8-1avandulyl-5,7, 4＇-trihydroxyflavonol （2）,were isolated from the dry roots of S *** structures were e... 详细信息

关键词： Sophora flavescens Fabaceae flavanone antibacterial activity.