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Central applications of Tesfay coordination in transportation supply chain:Case of airline industry

Journal of Traffic and Transportation Engineering(English Edition) 2019年第5期6卷 514-525页

作者： Yohannes Yebabe Tesfay CREE Durham hitachi powdered metals (USA) Inc.

This paper is extensions of the Tesfay(2014) paper on the Bullwhip effects and Tesfay(2015) paper on the foundations of the Bullwhip effect and its implications on the theory of organizational *** major outcome of the Tesfay(2014) paper suggests that one way or another Bullwhip effect attacks all the business collaborates in supply *** major outcome of the Tesfay(2015) paper suggests that the solutions from the transaction cost economics are still insufficient to produce the most efficient organizational *** paper extends stochastic analysis by applying various panel data regression models and structural equations of seemingly unrelated regression(SUR)models on the experimental data from Beer *** autoregressive-SUR model estimation result confirmed that the Bullwhip effects can be cause by both intra-organizational coordination and inter-organizational coordination of the business collaborates of supply *** order to control the effect of intra-organizational coordination on the Bullwhip effects,the author outline a new coordination type known as the hyper-hybrid *** a final point,the author has shown important applications of the hyperhybrid coordination in the airline industry.

关键词： Airline industry Bullwhip effect Stochastic model Tesfay coordination

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用CNC压机压制成形的事例

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粉末冶金技术 2013年第1期31卷 69-74页

作者： Tomoaki Arakawa Tadao Masuda 韩凤麟 hitachi powdered metals co .Ltd

近年来,利用液压伺服机构的粉末成形压机日益普及,现在用CNC压机可压制成形过去用粉末冶金工艺无法压制成形的最终形零件。介绍了利用CNC压机的压制成形方法,其中包括近期才大量生产的与仍在研究大量生产的特殊产品。

关键词： CNC压机多台面压制横向沟槽成形

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Structural and chemical transformations of CuZn alloy nanoparticles under reactive redox atmospheres:An in situ TEM study

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Nano Research 2024年第7期17卷 6265-6273页

作者： Shengnan Yue Qian Li Chaobin Zeng Alexander Klyushin Ramzi Farra Marc-Georg Willinger Xing Huang college of Chemistry Fuzhou UniversityFuzhou 350108China Qingyuan Innovation Laboratory Quanzhou 362801China hitachi High-Tech Scientific Solutions(Beijing)co. Ltd.Beijing 100015China MAX IV Laboratory Lund UniversityBox 11822100 LundSweden Department of Inorganic Chemistry Fritz-Haber Institute of Max Planck SocietyBerlin 14195Germany Department of Chemistry Technical University of MunichGarching 85748Germany

Alloying metals to form intermetallics has been proven effective in tuning the chemical properties of metal-based ***,intermetallic alloys can undergo structural and chemical transformations under reactive conditions,leading to changes in their catalytic *** and understanding these transformations are crucial for establishing relevant structureperformance relationships and for the rational design of alloy-based *** this work,we used CuZn alloy nanoparticles(NPs)as a model material system and employed in situ transmission electron microscopy(TEM)to investigate the structural and chemical changes of CuZn NPs under H_(2),O_(2)and their *** results show how CuZn NPs undergo sequential transformations in the gas mixture at elevated temperatures,starting with gradual leaching and segregation of Zn,followed by oxidation at the NP *** remaining copper at the core of particles can then engage in dynamic behavior,eventually freeing itself from the zinc oxide *** structural dynamics arises from an oscillatory phase transition between Cu and Cu_(2)O and is correlated with the catalytic water formation,as confirmed by in situ mass spectrometry(MS).Under pure H_(2)or O_(2)atmosphere,we observe different structural evolution pathways and final chemical states of CuZn NPs compared to those in the gas *** results clearly demonstrate that the chemical state of alloy NPs can vary considerably under reactive redox atmospheres,particularly for those containing elements with distinct redox properties,necessitating the use of in situ or detailed ex situ characterizations to gain relevant insights into the states of intermetallic alloy-based catalysts and structure-activity relationships.

关键词： In situ transmission electron microscopy(TEM) CuZn alloy structural and chemical transformations redox atmosphere

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