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THE RIGHT TO EMPlOYMENT SECuRITY IN CHINESE lABOR lAW： lATEST DEVElOPMENTS IN lIGHT OF INTERNATIONAl lAW

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Frontiers of law in China-Selected Publications from Chinese universities 2015年第1期10卷 136-160页

作者： l u Haina School of law Renmin University of China Beijing 100872 China

Employment security is very often examined from a labor law rather than a human rights perspective. This article looks at the employment security in Chinese labor law from a human rights perspective. The right to employment security includes both negative and positive aspects： a negative right to protection against unfair dismissal, including dismissal for cause and economic redundancy, and a positive right to employment stability. Comparing Chinese labor law with international standards, this article focuses on analyzing important changes in the legislative developments in China in the past years, such as severance pay, labor contract with indefinite duration, and labor dispatching. This article also points out the main deficiencies, such as dismissal on the ground of criminal liabilities, weakness of trade unions and law enforcement, and no exemption of small employers. The article concludes with observing a tendency of Chinese law getting closer to international standards and pointing out the approach China should follow： to enhance employability through vocational training and providing better social security when strengthening the legislative protection of employment security.

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Improving the Input of Classified Neural Networks Through Feature Construction

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Journal of Systems Engineering and Electronics 2001年第3期12卷 85-89页

作者： Yang, l. Yu, z. Huang, l. School of Economics and Management Tongji University Shanghai 200092 China

A general classification algorithm of neural networks is unable to obtain satisfied results because of the uncertain problems existing among the features in moot classification programs, such as interaction. With new features constructed by optimizing decision trees of examples, the input of neural networks is improved and an optimized classification algorithm based on neural networks is presented. A concept of dispersion of a classification program is also introduced too in this paper. At the end of the paper, an analysis is made with an example.

关键词： Feature construction Neural networks Dispersion Decision trees Hyperplane.

Precipitation of multi-type nano-quasicrystals in a Mg-zn-Y alloy

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Journal of Magnesium and Alloys 2024年第3期12卷 997-1008页

作者： W.z.Wang X.z.zhou l.F.zhang H.Q.Ye z.Q.Yang Shenyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of ScienceShenyang 110016China Ji Hua laboratory Foshan 528251China Foshan university Foshan 528231China

Mg-6zn-1Y(at.%)ribbons with strengthening precipitates of multi-type nanoquasicrystals were prepared by melt-spinning followed by aging *** evolution of the rapidly solidified ribbons during isothermal aging was comprehensively studied using various electron microscopy *** new kinds of decagonal quasicrystals were formed in aged ribbons,in addition to precipitation of nanometer icosahedral ***-resolution observations reveal that both decagonal quasicrystals can be modeled by quasiperiodic tiling with decagonal clusters of 2.5 nm in diameter,but overlap of neighboring clusters in both decagonal quasicrystals is different from the Gummelt model observed in other quasicrystals.A shell composed of complex laves Mg-zn domains was formed surrounding each decagonal quasicrystal precipitate upon prolonged *** addition,all kinds of nanoprecipitates exhibit excellent structure and size stability at 573 *** findings may have implications for not only fundamental studies about quasicrystals,but also microstructural manipulation of high-performance Mg alloys.

关键词： Quasicrystal Mg alloys Rapid solidification Scanning-transmission electron microscopy.

Time Dependant Weld Shape in Ar-O_2 Shielded Stationary GTA Welding

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Journal of Materials Science & Technology 2007年第5期23卷 650-654页

作者： Shanping l u Dianzhong lI Hidetoshi Fujii Kiyoshi Nogi Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 Chian Joining and Welding Research Institute Osaka University Osaka567-0047 Japan

The stationary gas tungsten arc welding （GTA） is carried out on SuS304 stainless steel under Ar-0.1%O2 and Ar-0.3%O2 mixed shielding to observe the evolution of the molten pool and investigate the role of Marangoni convection on the weld shape. After welding, the oxygen content in the weld metal was measured by using an oxygen/nitrogen analyzer. Small addition of oxygen to the argon based shielding gas can effectively adjust the weld pool oxygen content. Oxygen plays an important role as an surface active element in determining the pattern of Marangoni convection in the stainless steel weld pool. When the weld metal oxygen content is over the critical value, 0.01 wt pct, corresponding to the Ar-0.3%O2 mixed shielding gas, the Marangoni convection changes from outward to inward direction and the weld shape dramatically changes from wide shallow shape to narrow deep shape.

关键词： Marangoni convection Oxygen Weld shape

Solar PV-Battery-Electric Grid-Based Energy System for Residential Applications: System Configuration and Viability

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Research 2019年第1期2019卷 486-502页

作者： V.Bagalini B.Y.zhao R.z.Wang u.Desideri university of Pisa DESTEC Largo Lucio LazzarinoPisa 56122Italy Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai 200240China

Distributed renewable energy share increase in electricity generation is creating challenges for the whole power system,due to its intermittent and nonprogrammable *** storage has the potential to solve those issues although its technical,economic,and environmental impact is up for *** paper presents a study about a PV-battery energy storage system installed in a gridconnected residential apartment in the Green Energy laboratory at Shanghai Jiao Tong university,*** experimental results show how the presence of energy storage reduces the midday feed-in of excess PV power and the evening peak demand,providing benefits to the distribution network in terms of reduced voltage swings and peak *** the Chinese context,an economic analysis is carried out to assess the profitability of residential PV-battery systems,using the net present value as the economic indicator of an 18-year investment in which the battery pack is replaced twice(6 life years).The analysis shows that such system is not economically viable due to a combination of low electricity prices,valuable PV incentives,and high technology ***,considering a future scenario of doubled electricity tariff,halved export tariff,and falling technology costs(-66%battery and-17%PV and inverter),PV-battery investment becomes profitable and shows more resilience to future scenarios than PV-only investment.

关键词： battery Battery Solar

Nonplanar flow-induced vibrations of a cantilevered PIP structure system concurrently subjected to internal and cross flows

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Acta Mechanica Sinica 2019年第6期35卷 1241-1256页

作者： z.Y.liu T.l.Jiang l.Wang H.l.Dai Department of Mechanics Huazhong University of Science and TechnologyWuhan 430074China Hubei Key laboratory for Engineering Structural Analysis and Safety Assessment Wuhan 430074China

Pipe-in-pipe(PIP)structures are widely used in offshore oil and gas pipelines to settle thermal insulation issues.A PIP structure system usually consists of two concentric pipes and one softer layer for thermal insulation *** total response of the system is related to the dynamics of both pipes and the interactions between these two concentric *** the current work,a theoretical model for flow-induced vibrations of a PIP structure system is proposed and analyzed in the presence of an internal axial flow and an external cross *** interactions between the two pipes are modeled by a linear distributed damper,a linear distributed spring and a nonlinear distributed spring along the pipe *** unsteady hydrodynamic forces due to cross flow are modeled by two distributed van der Pol wake *** nonlinear partial differential equations for the two pipes and the wake are further discretized by the aid of Galerkin’s technique,resulting in a set of ordinary differential *** ordinary differential equations are further numeri cally solved by using a fourth-order Runge-Kutta integration *** portraits,bifurcation diagrams,an Argand diagram and oscillation shape diagrams are plotted,showing the existence of a lock-in phenomenon and figure-of-eight *** PIP system subjected to cross flow displays some interesting dynamical behaviors different from that of a single-pipe structure.

关键词： Cantilevered PIP structure Theoretical model Flow-induced vibration Cross flow Internal flow

Coarsening Behavior of Gamma Prime Precipitates in a Nickel Based Single Crystal Superalloy

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Journal of Materials Science & Technology 2016年第2期32卷 172-176页

作者： S.Tang l.K.Ning T.z.Xin z.zheng university of Chinese Academy of Sciences.Beijing 100049.China Superalloy Division.Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

The γ/γ＇ microstructural evolution in a nickel based single crystal superalloy during load-free thermal exposure at 900 ℃ has been further investigated in this paper. The growth characteristics of γ＇ precipitates were discussed in detail. The generation of interfacial dislocations would accelerate the rate of coalescence in the dendrite arms. The average sizes of precipitates were used to compare interface with diffusion controlled growth mechanism and no mechanism seems obviously dominant, although the square rate law gives slightly better fit. The coarsening behavior may be controlled by diffusion through the ragged interface between the γ＇ precipitate and the y matrix.

关键词： Single crystal superalloy Coarsening Interfacial dislocations Rate controlling mechanism

Constitutive equation and model validation for a 31 vol.% B_4Cp/6061Al composite during hot compression

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Journal of Materials Science & Technology 2018年第10期34卷 1730-1738页

作者： l. zhou C. Cui Q.z. Wang C. li B.l. Xiao z.Y. Ma Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China School of Electromechanical and Vehicle Engineering Yantai University Yantai 264005 China School of Mechanical Engineering Shenyang Ligong University Shenyang 110159 China Nuclear and Radiation Safety Center Ministry of Environmental Protection Beijing 100082 China

An accurate constitutive equation is essential to understanding the flow behavior of B4C/A1 compos-ites during the hot deformation. However, the constitutive equations developed previously in literature are generally for low strain rate deformation. In the present work, we modified the general consti-tutive equation and take the high strain rate correction into account. The constitutive equation for a 31 vol.% B4Cp/6061AI composite was constructed based on the flow stresses measured during isothermal hot compression at temperatures ranging from 375 to 525 ℃ and strain rates from 0.01 to 10 s^-1. The experimental flow stresses were corrected by considering temperature-dependent Arrhenius factor. The modified equation was then verified by using DEFORM-3D finite element analysis to simulate the exper-imental hot compression process. The results show that the modified equation successfully predicts flow stress, load-displacement, and the temperature rise. This helps to optimize the hot deformation process, and to obtain desirable properties, such as reduced porosity and homogenous particle distribution in B4C/AI composites.

关键词： Composites B4C/AI Constitutive equation Hot compression Finite element simulation

lONGITuDINAl DISPERSION IN SEDIMENT-lADEN OPEN CHANNEl FlOWS

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International Journal of Sediment Research 2004年第1期19卷 1-14页

作者： z.AHMAD,u.C.KOTHYARI,K.G.RANGA RAJu Asst.Professor of Civil Engineering Indian Inst.of Tech. Roorkee(Formerly university of Roorkee) ROORKEE-247 667 INDIA Professor of Civil Engineering Indian Inst. of Tech. Roorkee ROORKEE-247 667 INDIA. Professor of Civil Engineering Indian Inst. of Tech. Roorkee ROORKEE-247 667 INDIA.

laboratory experiments on longitudinal dispersion in clear-water and sediment-laden open channel flows are reported. Data from these experiments and those available from previous studies indicate that the suspended sediment present in the flow affects the longitudinal dispersion process. The observed velocity distributions over the depth of sediment-laden flows indicate that the velocity deviates from the mean velocity more in sediment-laden flows than in clear-water flows. The velocity distributions over the cross section and secondary flow in the channel are also expected to be altered due to the presence of suspended sediments in the flow. For these reasons, more dispersion is found in sediment-laden flows than in corresponding clear-water flows. A predictor for the dispersion coefficient in sediment-laden flows is proposed.

关键词： longitudinal dispersion Open channel Sediment-laden flow Pollutants Velocity distribution