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知识溢出视角下企业数字化转型与全球价值链融入

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国际商务研究 2025年第1期46卷 86-100页

作者：钟晓龙康茂楠李慧慧中国光大集团北京100033 中国人民大学北京100033 天津财经大学天津300222 南京师范大学江苏南京210023

企业数字化转型能够诱发知识溢出,是促进企业融入全球价值链的有效路径。本文利用2007~2016年中国制造业上市企业数据,探讨知识溢出视角下企业数字化转型对全球价值链融入的影响。结果表明:相较于非数字化转型的企业,数字化转型企业的... 详细信息

企业数字化转型能够诱发知识溢出,是促进企业融入全球价值链的有效路径。本文利用2007~2016年中国制造业上市企业数据,探讨知识溢出视角下企业数字化转型对全球价值链融入的影响。结果表明:相较于非数字化转型的企业,数字化转型企业的知识溢出显著促进了企业融入全球价值链,在克服内生性问题和稳健性检验后,结论依然成立;异质性分析表明,数字化转型企业的知识溢出对国有企业、低IT投资企业和技术资本密集型企业融入全球价值链有显著正向影响;进一步讨论发现,知识产权保护的加强、融资约束的缓解强化了数字化转型企业知识溢出对企业融入全球价值链的积极作用。

关键词：数字经济数字化转型知识溢出全球价值链融入知识产权保护

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MANUFACTURER'S UNIFORM PRICING AND CHANNEL CHOICE WITH A RETAIL PRICE MARKUP COMMITMENT STRATEGY

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Journal of Systems Science and Systems Engineering 2014年第1期23卷 111-126页

作者： huihui Liu Ming Lei Xiangdong Liu Guanghua School of Management Peking University China Center for International Economic Exchanges

The paper studies channel choice decisions in a multi-channel supply chain under a strategy where there is an ex-ante commitment made on the retail price markup. The market demand is uncertain and dependent on the price and sales efforts. The results show that in any channel structure, when making order decisions the retailer only examines the price ratio and the fluctuation size of random demand, rather than the channel cost and the retailer＇s marketing efficiency. When the retail price rises, the manufacturer is willing to increase inventory quantity for direct sales, because the manufacturer＇s profit margin is higher in direct channel. The increase in demand fluctuation only affects the degree of channel preference but doesn＇t change the manufacturer＇s channel choice. No matter in which level the price ratio is, when the sales efficiency of retail channel is not high or the demand proportion of direct channel is low, the manufacturer and the retailer will be both apt to choose a dual-channel structure. Then adding a direct channel becomes a marketing strategy, rather than a competitor of the retail channel, and helps the supply chain win more market demand.

关键词： Uniform pricing marketing/sales effort channel choice newsvendor model dual channelsupply chain

Constructions for key distribution patterns

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Frontiers of Mathematics in China 2017年第2期12卷 301-323页

作者： Shangdi CHEN huihui WEI College of Science Civil Aviation University of China Tianjin 300300 China

Abstract Key distribution patterns （KDPs） are finite incidence structures satisfying a certain property which makes them widely used in minimizing the key storage and ensuring the security of communication between users in a large network. We construct a new KDP using t-design and combine two ω-KDPs to give new （ω- 1）-KDPs, which provide secure communication in a large network and minimize the amount of key storage.

关键词： Key predistribution scheme (KPS) key distribution pattern (KDP),incidence structure design wireless sensor network (WSN)

Weighted Moore-Penrose Inverses and Weighted Core Inverses in Rings with Involution

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Chinese Annals of Mathematics,Series B 2021年第4期42卷 613-624页

作者： huihui ZHU Qing-Wen WANG Department of Mathematics Shanghai UniversityShanghai 200444China School of Mathematics Hefei University of TechnologyHefei 230009China

In this paper,the authors derive the existence criteria and the formulae of the weighted Moore-Penrose inverse,the e-core inverse and the f-dual core inverse in ***,new characterizations between weighted Moore-Penrose... 详细信息

关键词： Weighted Moore-Penrose inverses One-sided inverses along an element Inverses along an element e-Core inverses f-Dual core inverses

Evaluating quality of motion for unsupervised video object segmentation

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Optoelectronics Letters 2024年第6期20卷 379-384页

作者： CHENG Guanjun SONG huihui Jiangsu Key Laboratory of Big Data Analysis Technology Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment TechnologyNanjing University of Information Science&TechnologyNanjing 210044China12

Current mainstream unsupervised video object segmentation(UVOS) approaches typically incorporate optical flow as motion information to locate the primary objects in coherent video frames. However, they fuse appearance and motion information without evaluating the quality of the optical flow. When poor-quality optical flow is used for the interaction with the appearance information, it introduces significant noise and leads to a decline in overall performance. To alleviate this issue, we first employ a quality evaluation module(QEM) to evaluate the optical flow. Then, we select high-quality optical flow as motion cues to fuse with the appearance information, which can prevent poor-quality optical flow from diverting the network's attention. Moreover, we design an appearance-guided fusion module(AGFM) to better integrate appearance and motion information. Extensive experiments on several widely utilized datasets, including DAVIS-16, FBMS-59, and You Tube-Objects, demonstrate that the proposed method outperforms existing methods.

关键词： Evaluating quality of motion for unsupervised video object segmentation

Geometric dilution of precision for GPS single-point positioning based on four satellites

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Journal of Systems Engineering and Electronics 2008年第5期19卷 1058-1062,F0003页

作者： Wang huihui Zhan Xingqun Zhang Yanhua Inst. of Aerospace Science & Technology Shanghai Jiaotong Univ. Shanghai 200240 P. R. China

To improve the positioning accuracy in GPS point positioning, the geometric dilution of precision （GDOP） including HDOP, VDOP, TDOP, PDOP is commonly considered. The properties of the DOP for the GPS satellite navigation system are studied and the coordinate system is improved in order to decrease the amount of variables. In the end, by simulation and discussing the results, the corresponding conclusions are presented.

关键词： GPS dilution of precision GDOP navigation simulation.

Energy-based modeling and control for grid-side converter of doubly fed wind generator

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控制理论与应用（英文版） 2012年第4期10卷 435-440页

作者： huihui SONG Yanbin QU School of Information Science and Engineering Harbin Institute of Technology at Weihai

To avoid dealing with the zero dynamics limitation brought by the bidirectional power flow through the back-to-back converter in a doubly fed wind generator, a new energy-based modeling and control approach for the grid- side converter is presented. During the modeling process, the grid-side converter is divided into two subsystems with the feedback interconnection structure, and the interactive matrix of the model takes into account the concrete port structure. Then, an energy-based controller is proposed to realize the grid-side control objectives based on the new model. Simulation studies are carried out in MATLAB/Simulink. Comparative results between the proportional-integral controller and the energy-based controller show that the latter one can obtain faster convergence rate and global stability as the load current varies. Moreover, the energy-based controller is also competent for grid-side control when simulated in a 2 MW wind energy conversion system with random wind.

关键词： Wind energy Grid-side converter Energy-based control Port-controlled Hamilton

Spatially mapping the diffusivity of proteins in live cells based on cumulative area analysis

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Science China Chemistry 2023年第11期66卷 3307-3313页

作者： huihui Gao Chu Han Limin Xiang College of Chemistry and Molecular Sciences&Taikang Center for Life and Medical Sciences Wuhan UniversityWuhan 430072China

Molecular motion provides a way for biomolecules to mix and interact in living *** their motion is critical to the understanding of how biomolecules perform its ***,it has been a challenged task to spatially map the fast diffusion of unbound proteins in the heterogenous intracellular *** we reported a new imaging technique named cumulative area based on single-molecule diffusivity mapping(CA-SMdM).The strategy is based on the comparison of singlemolecule images between a shorter and longer exposure *** longer exposure time,molecules will travel further,thus giving more blurred single-molecule images,hence implying its local diffusion *** validated our technique through measuring the fast diffusion rates(10–40μm~2/s)of fluorescent dye in glycerol-water mixture,and found the values fit well with Stokes-Einstein *** further showed that the spatially mapping of diffusivity in live cells is plausible through CA-SMdM,and it faithfully reported the local diffusivity heterogeneity in cytosol and ***-SMdM provides an efficient way to mapping the local molecular motion,and therefore will have profound applications in probing the biomolecular interactions for living systems.

关键词： single molecule diffusivity cumulative area single-molecule diffusivity mapping

First-principles study on improvement of two-dimensional hole gas concentration and confinement in AlN/GaN superlattices

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Chinese Physics B 2022年第1期31卷 516-523页

作者： huihui He Shenyuan Yang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

Using first-principles calculations based on density functional theory,we have systematically studied the influence of in-plane lattice constant and thickness of slabs on the concentration and distribution of two-dimensional hole gas(2 DHG)in AlN/GaN *** show that the increase of in-plane lattice constant would increase the concentration of 2 DHG at interfaces and decrease the valence band offset,which may lead to a leak of *** the thickness of AlN and/or decreasing the thickness of GaN would remarkably strengthen the internal field in GaN layer,resulting in better confinement of 2 DHG at AlN/GaN ***,a moderate larger in-plane lattice constant and thicker AlN layer could improve the concentration and confinement of 2 DHG at AlN/GaN *** study could serve as a guide to control the properties of 2 DHG at Ⅲ-nitride interfaces and help to optimize the performance of p-type nitride-based devices.

关键词： two-dimensional hole gas III-nitride interfaces polarization first-principles calculations