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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong Yan Ting Liang Jia Jia Shengjie Yuan Dongxing Kou Zhengji zhou wenhui zhou Yafang Qi Yuena Meng Litao Han Sixin Wu Key Laboratory for Special Functional Materials of MOE National & Local Joint Engineering Research Centre for High-efficiency Display and Lighting Technology School of Nanoscience and Materials Engineering Henan University

Solution-processed Cu（In,Ga）Se2（CIGS） solar cells suffer from serious carrier recombination and power conversion efficiency（PCE） loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage（VOC） of 662 m V and fill factor（FF） of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solar cells Solution-processed method Ag doping Crystal growth Defects engineering

Coopetition between B2C E-commerce Companies:Price Competition and Logistics Service Cooperation

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Journal of Systems Science and Systems Engineering 2020年第6期29卷 730-752页

作者： Weixiang Huang wenhui zhou Feng Luo School of Business Administration South China University of TechnologyGuangzhou 510640China School of E-commerce and Logistics Beijing Technology and Business UniversityBeijing 100048China

This paper studies the impact of logistics cooperation in two competing companies,one of which is equipped with a self-run logistics system while the other is *** latter outsources logistics services to a third-party logistics company before logistics cooperation,or to its competitor after logistics cooperation with the client's service quality being in proportion to and no greater than the service provider's service *** find that when the service provider is a price taker,logistics cooperation is beneficial to both firms only when the service quality after logistics cooperation is ***,under some circumstances,the client's profit increases even when its service quality decreases after logistics cooperation because logistics cooperation eases the price *** also find that all-win situations in which logistics cooperation increases the firms7 profit,consumer surplus and social welfare can be ***,when the service price can be chosen by the service provider,we propose a negotiation process in which agreement on logistics cooperation can be reached;when the firm can invest in service quality,logistics cooperation may lower the equilibrium investment level.

关键词： E-commerce B2C coopetition logistics cooperation hotelling model

组态视角下数字经济赋能区域新质生产力的驱动模式研究

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云南财经大学学报 2025年第1期41卷 69-79页

作者：周文慧王一珺陈丽佳湖南信息学院管理学院长沙410151

数字经济为新质生产力发展提供了重要动能,但出于区域资源禀赋异质性,数字经济赋能新质生产力发展的驱动模式存在差异。以2022年中国30个省份为样本,基于组态理论研究了数字经济要素组合赋能新质生产力的多条等效路径。研究发现:新型数... 详细信息

数字经济为新质生产力发展提供了重要动能,但出于区域资源禀赋异质性,数字经济赋能新质生产力发展的驱动模式存在差异。以2022年中国30个省份为样本,基于组态理论研究了数字经济要素组合赋能新质生产力的多条等效路径。研究发现:新型数字技术对高新质生产力水平具有必要性,数字资源、数字产业、基础数字技术和数字环境均不可作为高新质生产力水平的单一必要性条件。区域高新质生产力水平的驱动模式有三类,分别是数字资源-数字环境主导下的数字产业驱动型、数字资源-数字产业双向主导型、数字资源-数字产业-数字政府三驱型。

关键词：数字经济新质生产力组态视角必要条件分析法模糊集定性比较分析法

Multi-energy Demand Response Management in Energy Internet: A Stackelberg Game Approach

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Chinese Journal of Electronics 2019年第3期28卷 640-644页

作者： WU Jie zhou wenhui ZHONG Weifeng LIU Jinhua Zhongshan Institute University of Electronic Science and Technology of China School of Automation Engineering University of Electronic Science and Technology of China School of Automation Guangdong University of Technology

A multi-energy Demand response management(DRM) approach in Energy Internet is proposed by employing Stackelberg game theory. The multi-energy trading problem in DRM is formulated as a Stackelberg game, where an energy provider, as a leader, adjusts energy prices, and residential smart energy hubs, as followers, dynamically schedule multiple energy flows according to the prices. The existence and uniqueness of the equilibrium of the proposed game model are analyzed.A multi-energy DRM algorithm for reaching the game equilibrium is developed. Simulation results show that the proposed game-based approach can effectively reduce residential energy costs and improve revenues of the energy provider.

关键词： Multi-energy demand response management(DRM) Energy hubs Energy Internet Stackelberg game

Electricity Consumption Scheduling with Consumers' Comfort and Preference in Smart Grid

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Chinese Journal of Electronics 2016年第6期25卷 1151-1158页

作者： zhou wenhui WU Jie ZHONG Weifeng ZOU Sheng Faculty of Automation Guangdong University of Technology Zhongshan Institute University of Electronic Science and Technology of China School of Automation Engineering University of Electronic Science and Technology of China

A game theory based scheduling method for household electricity consumption in smart grid is proposed in this paper. A non-cooperative game model is employed during the scheduling. All household consumers compete with each other and control their loads to maximize their payoffs. For solving the scheduling problem, we formulate the Utility optimization(UO) model, in which the electricity cost reduction and the improvement of consumers’ comfort and preference are considered simultaneously. The System optimization(SO) model only minimizes the electricity cost when scheduling the consumers’ electricity consumption. Then we compare and analyze the two models in numerical simulation. The existence and the uniqueness of Nash equilibrium for proposed game model are proved. Simulation results show that the UO model provides an effective scheduling approach to achieve higher comfort and preference and at the same time decrease the energy cost.

关键词： Game theory Electricity consumption scheduling Comfort and preference

Design of improved PBFT algorithm based on aggregate signature and node reputation

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Intelligent and Converged Networks 2023年第2期4卷 158-167页

作者： Jinhua Fu wenhui zhou Jie Xu College of Software Engineering Zhengzhou University of Light IndustryZhengzhou 450002China

The alliance chain system is a distributed ledger system based on blockchain technology,which can realize data sharing and collaboration among multiple parties while ensuring data security and *** Practical Byzantine Fault Tolerance(PBFT)consensus algorithm is the most popular consensus protocol in the alliance chain,but the algorithm has problems such as high complexity and too simple election of the master node,which will make PBFT unable to be applied in scenarios with too many *** the same time,there are certain security *** order to solve these problems,this paper proposes an improved Byzantine consensus algorithm,Polymerization Signature and Reputation Value PBFT(P-V PBFT).Firstly,the consistency protocol process is improved based on the aggregate signature *** simulation results show that the P-V PBFT algorithm can effectively reduce the overhead of network transmission,and the time complexity of the algorithm decreases exponentially,which improves the efficiency of the consensus ***,the node reputation election mechanism is introduced to elect the primary node,and the security analysis is carried out to verify the fairness and security of the primary node election of the P-V PBFT ***,as a feasible improvement of the blockchain consensus protocol,the P-V PBFT algorithm can provide more efficient and secure guarantee for the blockchain system in practical application.

关键词： blockchain Practical Byzantine Fault Tolerance(PBFT) consensus mechanism aggregate signature cryptography

3D-printed surface promoting osteogenic differentiation and angiogenetic factor expression of BMSCs on Ti6Al4V implants and early osseointegration in vivo

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Journal of Materials Science & Technology 2019年第2期35卷 336-343页

作者： Jinkai Zhang wenhui zhou Hui Wang Kaili Lin Fengshan Chen Department of Orthodontics School & Hospital of Stomatology Tongji University Shanghai Engineering Research Center of Tooth Restoration and Regeneration Department of Oral & Cranio-Maxillofacial Surgery Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine Shanghai Key Laboratory of Stomatology Shanghai Research Institute of Stomatology

Three-dimensional-printed(3 D-P) titanium implants display many advantages, such as design flexibility,higher efficiency, the capability to easily construct complex or customized structures, etc., and is believed to potentially replace traditional implants. However, the biological performance of the 3 D-P titanium surface has not been investigated systematically. Herein, we analyzed the surface characteristics of 3 D-P Ti6 Al4 V implants and evaluated the biological responses of bone marrow derived mesenchymal stromal cells(BMSCs) to the 3 D-P surface in vitro. Moreover, after implantation into the rat femoral condyle for3 and 6 weeks, the osseointegration performance was evaluated. The results showed the 3 D-P Ti6 Al4 V implant presented distinct fluctuant macroscale rough surface and relatively better hydrophilicity which enhanced the adhesion, proliferation, osteogenic differentiation and angiogenetic factor expression of BMSCs. Moreover, the in vivo osseointegration performance was also better than that of the control group at the early stage. The present study suggested the 3 D-P titanium alloy is a promising candidate to be used as implant material.

关键词： Three-dimensional printing Titanium alloy BMSCs Osteogenesis Osseointegration

Solvent-free Synthesis of Hexagonal Iron Sulfide Nanoflowers

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Chinese Journal of Chemistry 2013年第8期31卷 983-986页

作者： Xia Wang wenhui zhou Zhixian Chang Zhengji zhou Sixin Wu The Key Laboratory for Special Functional Materials of MOE Henan University Kaifeng Henan 475004 China

Employing green and economic solvent-free synthesis route, hexagonal iron sulfide （Fe7Ss） nanoflowers were successfully synthesized for the first time. In the experiment, ferric hexadecylxanthate was used as the precursor, and hexagonal iron sulfide （Fe7Ss） nanoflowers were obtained by thermal decomposition of the precursor at 260 ~C without any additional solvent or inert gas protection. The as-prepared iron sulfide nanoflowers were characterized by means of X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM） and energy dispersive spectrometry （EDS）. The characterization results indicated that the nanoflowers had uniform size distribution with an average size of about 160 rim. The proposed strategy provides a possible general route for the synthesis of other metal chalcogenide nanostructures.

关键词： semiconducting material synthesis iron sulfide Fe7S8 solvent-free

Acupuncture improves the live birth of patients with repeated implantation failure: a retrospective cohort study

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Journal of Traditional Chinese Medicine 2024年第4期44卷 830-838页

作者： SUN Junjian XIE Henghui LI Huanhuan TIAN Xiangming FANG Yigong zhou wenhui Medical Center for Human Reproduction Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Department of Gynecology Beijing First Hospital of Integrated Chinese and Western MedicineBeijing 100026China Department of Acupuncture and Moxibustion Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Institute of Acupuncture and Moxibustion China Academy of Chinese Medical SciencesBeijing 100700China

OBJECTIVE:To explore the therapeutic efficacy of acupuncture treatment on repeated implantation failure(RIF)patients with cryo-thawed embryo transfer(CET).METHODS:In a retrospective cohort study,all eligible women undergoing RIF were recruited in our center from January 1,2018 to December 31,*** patients were grouped by whether an acceptance of acupuncture treatment before CET,including the acupuncture group(Acu-group,55 cycles)and control group(Con-group,244 cycles).Data were analyzed by using binary logistic regression to explore the relationship of acupuncture treatment with pregnancy ***:The Acu-group had higher live-birth rate(LBR)[54.5%vs 41.0%,respectively;odds ratio(OR)=1.105,95%confidence interval(CI)(1.029,1.187),P=0.006]and ongoing pregnancy rate(OPR)[56.4%vs 43.0%,respectively;OR=1.100,95%CI(1.025,1.181),P=0.008]than the *** were no significant between-group differences in the rates of implantation[OR=1.070,95%CI(0.996,1.149),P=0.064],clinical pregnancy[OR=1.065,95%CI(0.997,1.138),P=0.061],biochemical pregnancy[OR=1.002,95%CI(0.903,1.112),P=0.967],or miscarriage[OR=0.778,95%CI(0.551,1.099),P=0.155].Perinatal outcomes did not differ significantly between the two ***:Acupuncture treatment could improve the LBR and OPR in RIF patients with CET cycles,suggesting a potential adjuvant therapy of acupuncture to improve the pregnancy outcomes in RIF patients.

关键词： acupuncture repeated implantation failure cryo-thawed embryo transfer live birth rate

Surface defect ordered Cu_(2)ZnSn(S,Se)_(4) solar cells with efficiency over 12% via manipulating local substitution

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Journal of Energy Chemistry 2022年第4期31卷 555-562页

作者： Changcheng Cui Dongxing Kou wenhui zhou Zhengji zhou Shengjie Yuan Yafang Qi Zhi Zheng Sixin Wu Key lab for Special Functional Materials Ministry of EducationNational&Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologySchool of Materials Science and EngineeringCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004HenanChina Inst Surface Micro&Nano Mat Coll Adv Mat&EnergyKey Lab Micronano Energy Storage&Convers Mat HeXuchang UniversityXuchang 461000HenanChina

The environmentally friendly Cu_(2)ZnSn(S,Se)_(4)(CZTSSe) compounds are promising direct bandgap materials for application in thin film solar cells, but the spontaneous surface defects disordering would lead to large open-circuit voltage deficit(V_(oc,deficit)) and significantly limit kesterite photovoltaics performance,primarily arising from the generated more recombination centers and insufficient p to n conversion at p-n junction. Herein, we establish a surface defects ordering structure in CZTSSe system via local substitution of Cu by Ag to suppress disordered Cu_(Zn) defects and generate benign n-type Zn_(Ag) donors. Taking advantage of the decreased annealing temperature of Ag F post deposition treatment(PDT), the high concentration of Ag incorporated into surface absorber facilitates the formation of surface ordered defect environment similar to that of efficient CIGS PV. The manipulation of highly doped surface structure could effectively reduce recombination centers, increase depletion region width and enlarge the band bending near p-n junction. As a result, the Ag F-PDT device finally achieves maximum efficiency of 12.34% with enhanced V_(oc) of 0.496 V. These results offer a new solution route in surface defects and energy-level engineering, and open the way to build up high quality p-n junction for future development of kesterite technology.

关键词： Kesterite Cu_(2)ZnSn(S,Se)_(4)thin film solar cells Interface recombination Defect passivation Ag substitution