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The dual role of ubiquitin-like protein Urm1 as a protein modifier and sulfur carrier

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Protein & Cell 2011年第8期2卷 612-619页

作者： fengbin wang Meiruo Liu Rui Qiu Chaoneng Ji Institute of Genetics Fudan UniversityShanghai 200433China

The ubiquitin-related modifier Urm1 can be covalently conjugated to lysine residues of other proteins,such as yeast Ahp1 and human MOCS3,through a mechanism involving the E1-like protein Uba4(MOCS3 in humans).Similar to ubiquitination,urmylation requires a thioester intermediate and forms isopeptide bonds between Urm1 and its *** addition,the urmylation process can be significantly enhanced by oxidative *** findings have demonstrated that Urm1 also acts as a sulfur carrier in the thiolation of eukaryotic tRNA via a mechanism that requires the formation of a thiocarboxylated *** role is very similar to that of prokaryotic sulfur carriers such as MoaD and *** strongly supports the hypothesis that Urm1 is the molecular fossil in the evolutionary link between prokaryotic sulfur carriers and eukaryotic ubiquitin-like *** the present review,we discuss the dual role of Urm1 in protein and tRNA modification.

关键词： Urm1 system tRNA modification Ub-like protein modification

Compari ng the con figured causal antecedents of exploration and exploitation: a fuzzy set qualitative comparative analysis

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Frontiers of Business Research in China 2019年第1期13卷 53-77页

作者： Lulu Liu fengbin wang Xiukun Li Renmin Business School Renmin University of China Beijing 100872 China School of Social Sciences Tsinghua University Beijing 100084 China

Although exploration and exploitation, as a pair of paradoxical organizational outcomes, are generated by different causal conditions, the conjunction of their respective causal antecedents has yet to be fully examined. Combining environmental uncertainty, unit interdependence, entrepreneurial bricolage and firm life cycle stage in a qualitative comparative analysis (QCA), the distinct causal configurations of exploration and exploitation are formalized and compared based on a survey of founders or high-level managers in 63 small firms. Results show that contrasted relationships between entrepreneurial bricolage and unit interdependenee exist in that the two antecedents are partial substitutes in exploration whereas they are complements in exploitation when combined with other conditions. This study provides empirical evidence on the causal configurations of exploration and exploitation and deepens our current understanding of ambidexterity.

关键词： Exploration Exploitation Ambidexterity Configuration Qualitative comparative analysis (QCA) Environmental uncertainty Entrepreneurial bricolage Unit interdepe ndence

An active equalization strategy for series-connected lithium-ion battery packs based on a dual threshold trigger mechanism

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Green Energy and Intelligent Transportation 2024年第3期3卷 63-74页

作者： Hui Pang Wenzhi Nan Xiaofei Liu fengbin wang Kaiqiang Chen Yupeng Chen School of Mechanical and Precision Instrument Engineering Xi'an University of TechnologyXi'an 710048China Takushoku University Japan

It is well acknowledged to all that an active equalization strategy can overcome the inconsistency of lithium-ion cell's voltage and state of charge(SOC)in series-connected lithium-ion battery(LIB)pack in the electric vehicle *** this regard,a novel dual threshold trigger mechanism based active equalization strategy(DTTMbased AES)is proposed to overcome the inherent inconsistency of cells and to improve the equalization efficiency for a series-connected LIB ***,a modified dual-layer inductor equalization circuit is constructed to make it possible for the energy transfer path ***,based on the designed dual threshold trigger mechanism provoked by battery voltage and SOC,an active equalization strategy is proposed,each single cell's SOC in the battery packs is estimated using the extended Kalman particle filter ***,on the basis of the modified equalization circuit,the improved particle swarm optimization is adopted to optimize the energy transfer path with aiming to reduce the equalization ***,the simulation and experimental results are provided to validate the proposed DTTM-based AES.

关键词： Active equalization strategy Extend Kalman particle filter Modified equalization circuit Improved particle swarm optimization State of charge difference trigger Voltage difference trigger

Characterization and prediction of tailpipe ammonia emissions from in-use China 5/6 light-duty gasoline vehicles

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 71-81页

作者： Lewei Zeng fengbin wang Shupei Xiao Xuan Zheng Xintong Li Qiyuan Xie Xiaoyang Yu Cheng Huang Qingyao Hu Yan You Ye Wu College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China State Key Laboratory of Engines Tianjin UniversityTianjin 300072China China Automotive Technology and Research Center Co.Ltd. Tianjin 300300China CATARC Automotive Test Center(Guangzhou)Co.Ltd. Guangzhou 511300China State Environmental Protection Key Laboratory of Cause and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research InstituteMacao University of Science and TechnologyMacao SAR 999078China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing 100084China

On-road tailpipe ammonia (NH3) emissions contribute to urban secondary organic aerosol formation and have direct or indirect adverse impacts on the environment and human health. To understand the tailpipe NH3 emission characteristics, we performed comprehensive chassis dynamometer measurements of NH3 emission from two China 5 and two China 6 light-duty gasoline vehicles (LDGVs) equipped with three-way catalytic converters (TWCs). The results showed that the distance-based emission factors (EFs) were 12.72 ± 2.68 and 3.18 ± 1.37 mg/km for China 5 and China 6 LDGVs, respectively. Upgrades in emission standards were associated with a reduction in tailpipe NH3 emission. In addition, high NH3 EFs were observed during the engine warm-up period in cold-start cases owing to the intensive emissions of incomplete combustion products and suitable catalytic temperature in the TWCs. Notably, based on the instantaneous NH3 emission rate, distinct NH3–emitting events were detected under high/extra high velocity or rapid acceleration. Furthermore, NH3 emission rates correlated well with engine speed, vehicle specific power, and modified combustion efficiency, which were more easily accessible. These strong correlations were applied to reproduce NH3 emissions from China 5/6 LDGVs. The predicted NH3 EFs under different dynamometer and real-world cycles agreed well with existing measurement and prediction results, revealing that the NH3 EFs of LDGVs in urban routes were within 8.55–11.62 mg/km. The results presented here substantially contribute to improving the NH3 emission inventory for LDGVs and predicting on-road NH3 emissions in China.

关键词： NH3 instantaneous emissions Catalytic temperature Vehicle specific power Combustion efficiency Emission prediction

Midea＇s Re-adoption of M-form Structure

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Frontiers of Business Research in China 2016年第2期10卷 324-362页

作者： fengbin wang Chi Zhang Zhexiong Tao Chunyan Sun School of Business Renmin University of China Beijing 100872 China Desautels Faculty of Management McGill University Montreal H3A IG5 Canada

With a focus on the alignment between business strategies and organization design, this illustrative case study describes and analyzes the evolution and reform of Midea＇s organizational structure when confronting both internal and external changes. As one of China＇s biggest and fastest-growing household appliance enterprises, Midea adopted, discarded and readopted an M-form~ organizational structure within a five-year period from 1997. This case study first investigates the reasons behind Midea＇s reform toward decentralization and the formation of governing rules to balance centralization and decentralization. Different decentralized structures are then contrasted basing on product segments, business streams or even key subsidiaries acting as second-tier group companies. After its trial transformation into an H-form company that holds majority shares in several incorporated subsidiaries, Midea chose to switch to a group company incorporated structure soon after its leadership transition in 2012. Preceding the shortening of the group＇s ownership chain was the construction, refinement, and evolution of its 9＋2＋4 divisional structure. This case study is prepared to provoke discussion and thoughts on the （re）design of a properly decentralized structure suitable for large-sized companies with multiple businesses and the links with external and internal factors.

关键词： M-form structure organizational design structural evolution

科层组织中的异层级化趋向——基于宝钢集团公司管理体制的案例研究

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管理世界 2009年第2期25卷 101-122页

作者：王凤彬中国人民大学商学院

在科层制存在价值备受怀疑的当今商界环境中,是以网络型组织来替代它,还是使它在某种形态的变异中成为一种可存续下来的制度安排,是社会学、经济学和管理学领域普遍关注的问题。在致力于赫伯特·西蒙倡导的"管理型组织"研究中,本文发现... 详细信息

在科层制存在价值备受怀疑的当今商界环境中,是以网络型组织来替代它,还是使它在某种形态的变异中成为一种可存续下来的制度安排,是社会学、经济学和管理学领域普遍关注的问题。在致力于赫伯特·西蒙倡导的"管理型组织"研究中,本文发现了相异于传统科层制的异层级化组织,是在企业运营管理系统和战略管理系统中都具有适用性的一种变异的科层组织模式。基于宝钢案例的定性研究显示,在权力分散化和业务集中化这两个看似相反方向的演变中,科层制组织可以通过向异层级化结构的变异而获得继续生存的价值。而变异后的科层组织中,上令下从的权威服从体系就转变为由各层管理者作为自主决策的主体在网络化联结中所形成的纵向权力关系网络。本文试图在科层与网络的"握手"中添加组织模式的多样性,并丰富科层组织研究的内涵。

关键词：科层制异层级化主体多中心决策自主权组织模式

Advances in Research on Drought Resistance in Rice

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Agricultural Biotechnology 2022年第5期11卷 26-33页

作者： Yueming YI Shimei wang Xinxin CHENG Qian ZHU Yiru LI fengbin wang Minghua ZHANG Anhui Science And Technology University Fengyang 233100China Rice Research Institute Anhui Academy of Agricultural SciencesHefei 230000China Institute of Food Crops Xinjiang Academy of Agricultural SciencesUrumqi 830000China South China Agricultural University Guangzhou 510000China

Rice is the main grain crop in China. With global warming, drought and water shortage have become one of the important factors limiting rice production. Improving the drought resistance of rice can effectively alleviate the loss of rice yield caused by drought. In this paper, the research progress on rice drought resistance and its evaluation methods, mapping of QTLs for drought resistance-related traits, and mining for drought resistance genes were reviewed, and molecular breeding for drought resistance in rice was prospected.

关键词： Rice Drought resistance Methods of identification and evaluation QTL mapping

大型国有企业集团总部对成员单位控制体系的构型研究——基于102家中央企业的定性比较分析

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南开管理评论 2018年第6期21卷 185-197页

作者：王璁王凤彬中国人民大学商学院

集团总部对下属诸多成员单位的控制是组织管理中具有前沿性和挑战性的问题,现有文献侧重探讨单项控制机制及在西方背景下常见的机制组合类型,而缺乏对转型经济背景下独特的控制机制组合类型及其对集团战略发展影响的研究。本文从构型观... 详细信息

集团总部对下属诸多成员单位的控制是组织管理中具有前沿性和挑战性的问题,现有文献侧重探讨单项控制机制及在西方背景下常见的机制组合类型,而缺乏对转型经济背景下独特的控制机制组合类型及其对集团战略发展影响的研究。本文从构型观视角,构建了一个整合"集分权—制度化—社会化"控制机制划分与"战略事项—经营事项"控制对象划分的大型企业控制体系内容框架,并基于此框架,以102家中央企业的经验数据探索了中国大型国有企业集团控制体系的类型及其与集团战略发展之间的关系。实证结果表明,人格化机制间的替代或互补关系促进了众多国有企业集团的战略发展,战略类制度这一非人格化机制对人格化机制发挥作用并形成有益补充。多种控制机制的组合构成了具有结果等效性的控制体系构建路径,支撑着集团的战略发展。不同于既有文献中常见的类型,众多市场竞争类国有企业集团通过采用"派员层级型"或"经营价值创造层级型"控制体系支撑了集团战略发展;部分非市场竞争类国有企业集团通过采用"威权层级型"控制体系支撑了集团战略发展,而仅具战略类制度的"类放任型"控制体系不具有这样的支撑力。本文丰富了对大型企业集团控制体系类型化的认识,并深化了中国国有企业集团背景下控制体系与战略发展间关系的中层理论,也为国有企业集团管理者进行控制体系建设提供了参考。

关键词：控制体系构型国有企业集团定性比较分析

用纵向案例研究讲好中国故事:过程研究范式、过程理论化与中西对话前景

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管理世界 2022年第6期38卷 191-212页

作者：王凤彬张雪中国人民大学商学院中国人民大学企业管理哲学与组织生态研究中心

不论是以因素理论化为主导的定量研究,还是Eisenhardt推崇的多案例研究,或者诠释主义导向的扎根理论研究,都存在一个共同的缺失,即忽视了动态变化现象所蕴涵的时间性。这为过程研究范式的发展留下了广阔的空间和理论创新的机会。近来国... 详细信息

不论是以因素理论化为主导的定量研究,还是Eisenhardt推崇的多案例研究,或者诠释主义导向的扎根理论研究,都存在一个共同的缺失,即忽视了动态变化现象所蕴涵的时间性。这为过程研究范式的发展留下了广阔的空间和理论创新的机会。近来国外的过程研究已快速发展并成型化,形成了包括本体论假设、理论化内核、过程数据分析策略和理论化模式在内的系列研究成果,为纵向案例研究者提供了一个新型研究范式。国内的过程研究数量也在不断攀升,但是在本体论立场、理论化深度、过程模型构建和方法适配性等方面尚存一些问题,总体呈现研究成果体系化不足和未能充分根植于本土厚实的过程思维传统等局限。为促进过程研究的高质量发展,本文对过程研究范式的哲学基础、范式内核、发展历程和动力进行系统化梳理和总结,并对发表在国内核心期刊上的纵向案例研究论文从本体论、时间嵌入性、理论化等多个维度进行述评,在总结过程研究面临的关键挑战和啟古纳今路径的同时阐明中西对话前景。本文力图通过文献述评和范式总结提升研究者对过程研究范式本体论、认识论、方法论的敏感性和反思力,为增扩过程理论化的深度和想象空间提供启迪,助力研究者更好地以纵向案例研究讲好中国故事。

关键词：过程研究理论化过程本体论时间性研究范式转型