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A ONE-STOP LOGISTIc SERVIcES FRAMEwORK SUPPORTING GLOBAL SUPPLY cHAIN cOLLABORATION

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Journal of Systems Science and Systems Engineering 2016年第2期25卷 229-253页

作者： Amy J.c. Trappey charles V. Trappey Sandy w.c. chang w.T. Lee Tun Nien Hsu Department of Industrial Engineering and Engineering Management National Tsing Hua University Hsinchu Taiwan China Department of Management Science National Chiao Tung University Taiwan China Technology center for Service Industries Industrial Technology Research Institute Taiwan China

A global enterprise must continuously improve the efficiency of logistic operations between supply chain collaborators. Integrating logistic services, resources, and necessary information flows in the supply chain to ensure efficiency and efficacy is critically important to these companies. Global logistic service companies face challenges from their clients to provide logistic services that are cost effective, accurate, and seamlessly integrate material, information and cash flows. In this research, an improved framework for one-stop logistic services is systematically designed, analyzed, and evaluated. The one-stop logistic service framework, defmed in four models, is developed to provide enterprises with integrated and comprehensive services within the global supply chain context. The levels of service importance are assessed using a four categories questionnaire. This research provides a case study of the implementation of one-stop logistic services in the distribution industry and demonstrates the framework operating under different demand conditions. Finally, system dynamics causal evaluation is used to evaluate the advantages of the logistic service framework.

关键词： One-stop logistic services logistic management supply chain management system dynamics modeling

Androgen and bone mass in men

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Asian Journal of Andrology 2003年第2期5卷 148-154页

作者： Annie w.c.Kung Department of Medicine University of Hong Kong Queen Mary Hospital Hong Kong China

Androgens have multiple actions on the skeleton throughout life. Androgens promote skeletal growth and accumulation of minerals during puberty and adolescence and stimulate osteoblast but suppress osteoclast function,... 详细信息

ct>Androgens have multiple actions on the skeleton throughout life. Androgens promote skeletal growth and accumulation of minerals during puberty and adolescence and stimulate osteoblast but suppress osteoclast function, activity and lifespan through complex mechanisms. Also androgens increase periosteal bone apposition, resulting in larger bone size and thicker cortical bone in men. There is convincing evidence to show that aromatization to estrogens was an important pathway for mediating the action of testosterone on bone physiology. Estrogen is probably the dominant sex steroid regulating bone resorption in men, but both testosterone and estrogen are important in maintaining bone formation.

关键词： bone of as et Androgen and bone mass in men in

A GENERAL cONSTITUTIVE RELATION FOR FATIGUE cRAcK GROwTH ANALYSIS OF METAL STRUcTURES

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Acta Metallurgica Sinica(English Letters) 2003年第5期16卷 342-354页

作者： w.c. cui and X.P. HuangSchool of Naval Architecture & Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, china School of Naval Architecture & Ocean Engineering Shanghai Jiaotong University

crack growth rate curves are the fundamental material property for metal structures under fatigue loading. Although there are many crack growth rate curves available in the literature, few of them showed the capability to explain various special phenomena observed in tests. A modified constitutive relation recently proposed by McEvily and his co-workers showed very promising capability. This modified constitutive relation is further generalized by (1) introducing an unstable fracture condition; (2) defining a virtual strength to replace the yield stress; and (3) defining an overload and underload parameter. The performances of this general constitutive relation for fatigue crack growth is extensively studied and it is found that this general constitutive relation is able to explain various phenomena observed with particular strong capability on load sequence effect.

关键词： metal fatigue S-N curve crack growth rate general constitutive relation mean stress effect load sequence effect

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科学史(下)

作者： (英)w.c.丹皮尔李珩译

来源：南通市图书馆图书评论

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科学史及其与哲学和宗教的关系(上下)

3-D FINITE ELEMENT ANALYSIS OF THE EFFEcT OF wELDING RESIDUAL STRESS ON HYDROGEN DIFFUSION IN HYDROGEN cONTAINED ENVIRONMENT

作者： (英)w.c.丹皮尔李珩译

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Acta Metallurgica Sinica(English Letters) 2007年第5期20卷 347-354页

作者： w.c. Jiang J.M. Gong J.Q. Tang H. chen S.T. Tu college of Mechanical and Power Engineering Nanjing University of Technology Nanjing 210009 China

The hydrogen distribution of 16MnR steel weldment in hydrogen contained environment was calculated using the finite element method （ FEM）. The effect of welding residual stress on hydrogen diffusion has been discussed using a 3-D sequential coupling finite element analysis procedure complied by Abaqus code. The hydrogen diffusion coefficient in weld metal, the heat affected zone （HAZ）, and the base metal of the 16MnR steel weldment were measured using the electrochemical permeation technique. The hydrogen diffusion without the effect of stress was also calculated and compared. Owing to the existence of welding residual stress, the hydrogen concentration was obviously increased and the hydrogen wouM diffuse and accumulate in the higher stress region.

关键词： 16MnR steel hydrogen diffusion welding residual stress finite element analysis

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科学史及其与哲学和宗教的关系(上册)

科学史及其与哲学和宗教的关系(上册)

STUDY ON EROSION RESISTANcE PROPERTIES OF O'-SIALON-BN IN MOLTEN STEEL

作者： (英)w.c.丹皮尔李珩译

来源：南通市图书馆图书评论

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作者： (英)w.c.丹皮尔李珩译

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Acta Metallurgica Sinica(English Letters) 2001年第2期14卷 85-90页

作者： Q. Zhen, w.Z. Ding and w.c. Li (Shanghai Enhanced Laboratory of Ferrometallurgy, Shanghai University, Shanghai 200072, china) (University of Science and Technology Beijing, Beijing 100083, china) Shanghai Enhanced Laboratory of Ferrometallurgy Shanghai University University of Science and Technology Beijing

The erosion resistance properties of O'-Sialon-BN in molten steel are investigated in this work. According to experimental results and theoretical analysis, BN in O'-Sialon-BN plays an important role in the molten steel erosion resistance. And the erosion kinetics of the O'-Sialon-BN composites in molten steel is controlled by two stages: the first one is controlled by the chemical reaction taking place on the interface; the second one is controlled by diffusion. The erosion surface of materials is also investigated with fractal theory. The results show that the fractal dimensions of the erosion surface vary with the erosion time from a linear way to a parabolic way, which is related to the erosion mechanism change from interface chemical reaction to diffusion.

关键词： corrosion resistance Doping (additives) Fractals Liquid metals Molten materials