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On establishment of novel constitutive model for directionally solidified nickel-based superalloys utilizing machine learning methods

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China Foundry 2023年第5期20卷 365-375页

作者： Jia-yan Sun Rong Yin ye-yuan hu Yun-xiang Tan Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Xiaomi AI Lab Beijing100102China

To enhance the accuracy of mechanical simulation in the directional solidification process of turbine blades for heavy-duty gas turbines,a new constitutive model that employs machine learning methods was *** model incorporates incremental learning and transfer learning,thus improves the predictive accuracy and generalization *** account for the anisotropy of the directionally solidified alloy,a deformation direction parameter is added to the model,enabling prediction of the stress-strain relationship of the alloy under different deformation *** predictive capabilities of both models are evaluated using correlation coefficient(R),average relative error(δ),and value of relative error(RE).Compared to the traditional model,the machine learning constitutive model achieves higher prediction accuracy and better generalization *** offers a new approach for the establishment of flow constitutive models for other directionally solidified and single-crystal superalloys.

关键词： Ni-based superalloy constitutive model machine learning directional solidification anisotropy

Exploring the effect of cooling rate on non-isothermal crystallization of copolymer polypropylene by fast scanning calorimetry

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China Foundry 2024年第4期21卷 379-386页

作者： Yang Liao ye-yuan hu Kosuke Ikeda Ryoji Okabe Rui-fen Wu Ryota Ozaki Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Composite Laboratory Research&Innovation Center Mitsubishi Heavy Industries Ltd.Nagasaki 8510392Japan

Polypropylene is commonly used as a binder for ceramic injection molding,and rapid cooling is often encountered during ***,the crystallization behavior of polypropylene shows a strong dependence on cooling rate due to its semi-crystalline ***,the influence of cooling rate on the quality of final product cannot be *** this study,the fast differential scanning calorimetry(FSC)test was performed to study the influence of cooling rate on the non-isothermal crystallization behavior and non-isothermal crystallization kinetics of a copolymer polypropylene(PP BC03B).The results show that the crystallization temperatures and crystallinity decrease as the cooling rate *** addition,two exothermic peaks occur when cooling rate ranges from 30 to 300 K·s^(-1),indicating the formation of another crystal ***,Ozawa and Mo equations were used to explore the non-isothermal crystallization kinetics,and it can be concluded that the Mo method is suitable for this study.

关键词： cooling rate crystallization temperature crystallinity non-isothermal crystallization kinetics FSC copolymer polypropylene

Logic paradox under current corporate finance

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Journal of Modern Accounting and Auditing 2007年第11期3卷 41-43页

作者： yuan ye-hu School of Accounting Jiangxi University of Finance and Economics Nanchang 330013 China

The current corporate finance is based on the theory framework of new classical economics. Therefore, the main contents such as free cash flow, NPV method and capital structure decision-making are still based on the balanced price of product and capital markets, they still can＇t reflect the essential character of corporation. The logic paradox, causes the current corporate finance study under a more and more embarrassing circumstance in the front of enterprise financial management practice, with the feature of value management.

关键词： corporate finance capital market finance logic paradox

基于迂回生产与智力资本的企业价值创造内在机理研究

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当代财经 2014年第11期 111-118页

作者：袁业虎江西财经大学会计学院江西南昌330013

基于知识核心内涵的智力资本,已成为当前经济增长与企业价值创造的关键驱动因素。但由于缺乏智力资本内生形成的逻辑线索,目前对智力资本驱动价值创造的理论解释尚不清晰。从基于迂回生产方式实现价值创造的本原出发,通过迂回生产方式... 详细信息

基于知识核心内涵的智力资本,已成为当前经济增长与企业价值创造的关键驱动因素。但由于缺乏智力资本内生形成的逻辑线索,目前对智力资本驱动价值创造的理论解释尚不清晰。从基于迂回生产方式实现价值创造的本原出发,通过迂回生产方式中预付资本(货币资本)与资本品相统一的资本本质的分析,可以探寻出智力资本的形成与演化路径,及其价值创造的内在机理。随着知识的动态形成,智力资本逐步内生演化成人力资本、组织资本、社会资本、关系资本等形式,从而促使了价值创造的逐步拓展。

关键词：迂回生产资本智力资本价值创造

政策性审核还是实质性审核:产业政策对并购重组委行政审核的影响

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当代财经 2021年第8期 78-89页

作者：袁业虎汤晟江西财经大学会计学院江西南昌330013 暨南大学管理学院广东广州510632

并购重组行政审核的制度安排是实体经济结构优化、服务国家经济战略布局的重要抓手,同样也关系到并购重组功能的正常发挥以及资本市场的健康化和市场化发展。以产业政策为切入点,选取2008—2018年A股上市公司涉及并购重组委审核的并购... 详细信息

并购重组行政审核的制度安排是实体经济结构优化、服务国家经济战略布局的重要抓手,同样也关系到并购重组功能的正常发挥以及资本市场的健康化和市场化发展。以产业政策为切入点,选取2008—2018年A股上市公司涉及并购重组委审核的并购重组事项为样本,对并购重组委行政审核的实质性进行研究。结果发现,当受产业政策支持的上市公司作为并购方时,进行的并购重组事项更可能通过并购重组委的行政审核。进一步,异质性分析表明,受产业政策支持的上市公司并购重组事项过审概率显著增加的结果主要体现在上市公司为民营企业、来自非西部地区、进行横向整合的样本中,这体现了并购重组委审核的实质性。然而,受产业政策支持的上市公司与并购重组委的社会关联及灰色关联会对并购重组委实质性审核产生不利影响,可能导致并购重组市场资源配置效率的扭曲。此外,受产业政策支持的上市公司并购重组实现后,上市公司集团进行了更多的实质性创新。

关键词：产业政策并购重组委行政审核并购重组

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua yuan hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

Advances in enhancing hydrodeoxygenation selectivity of lignin-derived oxygenates:From synthetic strategies to fundamental techniques

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Green Energy & Environment 2025年第2期10卷 292-321页

作者： Xinru Wu Hongwei Zhang Cejun hu Xiaojun Bao Pei yuan National Engineering Research Center of Chemical Fertilizer Catalyst College of Chemical EngineeringFuzhou UniversityFuzhou350002China College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China Qingyuan Innovation Laboratory Quanzhou362801China

In recent years,studies focusing on the conversion of renewable lignin-derived oxygenates(LDOs)have emphasized their potential as alternatives to fossil-based ***,LDOs,existing as complex aromatic mixtures with diverse oxygen-containing functional groups,pose a challenge as they cannot be easily separated via distillation for direct utilization.A promising solution to this challenge lies in the efficient removal of oxygen-containing functional groups from LDOs through hydrodeoxygenation(HDO),aiming to yield biomass products with singular ***,the high dissociation energy of the carbon-oxygen bond,coupled with its similarity to the hydrogenation energy of the benzene ring,creates a competition between deoxygenation and benzene ring *** hydrogen consumption and lignin properties,the preference is directed towards generating aromatic hydrocarbons rather than saturated ***,the goal is to selectively remove oxygen-containing functional groups while preserving the benzene ring *** on LDOs conversion have indicated that the design of active components and optimization of reaction conditions play pivotal roles in achieving selective deoxygenation,but a summary of the correlation between these factors and the reaction mechanism is *** review addresses this gap in knowledge by firstly summarizing the various reaction pathways for HDO of *** explores the impact of catalyst design strategies,including morphology modulation,elemental doping,and surface modification,on the adsorption-desorption dynamics between reactants and ***,we delve into the application of advanced techniques such as spectroscopic techniques and computational modeling,aiding in uncovering the true active sites in HDO reactions and understanding the interaction of reactive reactants with catalyst ***,fundamental insights into selective deoxygenation obtained through these techniqu

关键词： Hydrodeoxygenation Lignin-derived oxygenates Targeted deoxidation Catalyst design Techniques and theoretical calculation

Biisoindolylidene solvatochromic fluorophores: Synthesis and photophysical properties

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Chinese Chemical Letters 2025年第2期36卷 394-399页

作者： Xiaoyu Chen Jiahao hu Jingyi Lin Haiyang huang Changqing ye Hongli Bao College of Chemistry Fuzhou University State Key Laboratory of Structural Chemistry Key Laboratory of Coal to Ethylene Glycol and Its Related TechnologyCenter for Excellence in Molecular SynthesisFujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fujian College University of Chinese Academy of SciencesFuzhou 350002China dUniversity of Chinese Academy of Sciences

Environment-sensitive fluorescent probes are commonly utilized in various fields, including fluorescence sensing and imaging. This paper describes the synthesis and photophysical properties of a novel class of solvatochromic fluorophores that incorporate biisoindolylidene as the core backbone. This study investigates the structure-property relationships of these newly developed fluorophores. The central biisoindolylidene acts as an efficient electron acceptor, and by modifying the aryl ring substituent at the 3,3 position, the photophysical properties of the fluorophores can be significantly enhanced, particularly in terms of photoluminescence quantum efficiency. Furthermore, when an electron-donor group replaces the aryl ring at the 3,3 position, intriguing solvatochromic behavior is observed. This leads to a red-shift in the maximum emission wavelength and an increase in the Stokes shift with increasing solvent polarity. In solvent dimethyl sulfoxide(DMSO), the maximum emission wavelength can reach up to 750 nm,with a Stokes shift of approximately 150 nm. Finally, the potential application of the fluorophore in the detection of volatile acids is explored in a preliminary manner.

关键词： Acid sensitive Biisoindolylidene Electron receptor New fluorophores Solvatochromic

供应链网络关系与商业信用供给——基于结构洞的视角

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当代财经 2024年第10期 73-85页

作者：袁业虎吴端端江西财经大学会计学院江西南昌330013

供应链网络是企业的重要社会网络,对促进供应链整体协同发展具有重要的作用。以2012—2022年我国A股上市企业为研究样本,从结构洞的视角探讨企业供应链网络关系对商业信用供给的影响及其作用机制。研究结果发现,具有丰富供应链网络结构... 详细信息

供应链网络是企业的重要社会网络,对促进供应链整体协同发展具有重要的作用。以2012—2022年我国A股上市企业为研究样本,从结构洞的视角探讨企业供应链网络关系对商业信用供给的影响及其作用机制。研究结果发现,具有丰富供应链网络结构洞的企业能显著提高商业信用供给,并优化商业信用供给结构。这是因为,企业占据供应链网络结构洞的位置,能通过缓解融资约束以提升商业信用的供给能力、增强企业风险承担能力以增强供给意愿,从而增加商业信用供给。在经济政策不确定性较低和市场化进程较高地区的企业、供应链稳定性较好和供应链地理距离较近的企业、非国有企业和成长期企业中,占据丰富的供应链网络结构洞位置对商业信用供给的影响更为显著。为此,企业应重视其所嵌入的供应链网络关系,制定合理的商业信用供给决策,构建合作共赢的供应链系统,推动供应链协同发展。

关键词：供应链网络结构洞商业信用供给商业信用结构