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高技术制造业与科技服务业的复合协同系统创新研究

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中国科技论坛 2019年第9期 111-120页

作者：高舒锐孟卫东燕山大学经济管理学院

本文构建了高技术制造业和科技服务业的复合协同系统,在文献梳理的基础上,阐述了该系统的创新机制并建立了评价指标体系,基于2009-2016年的相关数据,采用复合系统协同度模型对两产业的创新协同度进行测度,同时测算高技术制造业内部各子... 详细信息

本文构建了高技术制造业和科技服务业的复合协同系统,在文献梳理的基础上,阐述了该系统的创新机制并建立了评价指标体系,基于2009-2016年的相关数据,采用复合系统协同度模型对两产业的创新协同度进行测度,同时测算高技术制造业内部各子行业与科技服务业的创新协同度。结果表明,当前高技术制造业创新子系统和科技服务业创新子系统的有序度处于“初步协调”阶段,但受到创新环境子系统的影响,整体协同度处于“较差协调”阶段;各子行业中,除了电子计算机及办公设备制造业与科技服务业的创新协同度非常低且发展并不稳定外,其他子行业与科技服务业的创新协同度能够呈现出逐年上升的趋势。根据研究结果,提出促进两产业复合协同系统创新发展的相关建议。

关键词：高技术制造业科技服务业复合协同系统

装备制造业技术协同创新绩效评价及政府作用力仿真研究——基于组合DEA模型和MATLAB仿真模型

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科技进步与对策 2017年第15期34卷 55-64页

作者：司林波孟卫东燕山大学公共管理学院燕山大学京津冀协同发展管理创新研究中心河北秦皇岛066004

运用MaxDEA软件,采用CCR模型、BCC模型和影子价格分析构成组合DEA模型,对装备制造业技术协同创新绩效进行评价。根据评价结果对重要影响因素——政府作用力进行MATLAB仿真,按照政府作用力仿真结果,将装备制造业及各子行业分为综合作用力... 详细信息

运用MaxDEA软件,采用CCR模型、BCC模型和影子价格分析构成组合DEA模型,对装备制造业技术协同创新绩效进行评价。根据评价结果对重要影响因素——政府作用力进行MATLAB仿真,按照政府作用力仿真结果,将装备制造业及各子行业分为综合作用力-复杂成长型、政策激励力-平稳成长型、政府支持力-波动成长型3种类型。最后根据绩效评价和仿真结果分别提出针对装备制造业及各子行业发展,以及进一步加强政府作用力的对策建议。

关键词：装备制造业技术协同创新绩效评价政府作用力 MATLAB仿真

中国高技术产业各行业资源配置效率研究——基于R&D存量Malmquist指数方法

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科技管理研究 2014年第4期34卷 38-42,79页

作者：孟卫东孙广绪重庆大学经济与工商管理学院重庆400044

考虑到资源投入的滞后性与累积性,用R&D经费存量代替当年值,利用有关价格缩减指数调整指标数据,采用Malmquist指数法对2000—2011年中国高技术产业各行业资源配置效率进行实证研究。研究表明:我国高技术产业各行业资源配置效率整体呈上... 详细信息

考虑到资源投入的滞后性与累积性,用R&D经费存量代替当年值,利用有关价格缩减指数调整指标数据,采用Malmquist指数法对2000—2011年中国高技术产业各行业资源配置效率进行实证研究。研究表明:我国高技术产业各行业资源配置效率整体呈上升趋势,但各行业的稳定性不同;资源配置效率主要受到技术效率和技术变化指数的影响,不同行业技术效率和技术变化的影响不同。

关键词： R&D存量高技术产业资源配置效率 Malmquist指数

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对竞争优势持续性问题的反思

科技进步与对策 2010年第20期27卷 19-24页

作者：周智颖孟卫东重庆大学经济与工商管理学院重庆400030

对"持续竞争优势"来源的认识是各个流派分歧与争议的焦点,而且即使在具有代表性的产业组织理论和资源基础理论领域,学者之间的意见差异也较大。为了解释分歧和争议存在的原因,首先对持续竞争优势的内涵进行了分析,接下来对现实中企业竞... 详细信息

对"持续竞争优势"来源的认识是各个流派分歧与争议的焦点,而且即使在具有代表性的产业组织理论和资源基础理论领域,学者之间的意见差异也较大。为了解释分歧和争议存在的原因,首先对持续竞争优势的内涵进行了分析,接下来对现实中企业竞争优势维持的实际情况进行了研究,然后对各流派关于持续竞争优势来源的解释,以及解释中存在的各种问题进行了剖析。最后认为,企业持续拥有竞争优势其实是一种超越现实的静态均衡形式,这种静态均衡在现实中是难以存在的。如果一个研究命题的客观存在性都值得怀疑,那么不同理论流派对它的解释始终存在分歧和争议就会是一种必然。

关键词：持续竞争优势企业战略管理

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港口的GPSS—F仿真模型

信息与控制 1989年第4期18卷 18-22页

作者：孟卫东上海交通大学管理学院

本文在国内首次运用 GPSS-F 仿真语言进行港口仿真,建立了船、车、港、货一体的比较完整的港口仿真模型,提出了一套相应的参数处理方法和方案评价指标.该模型能研究最佳泊位数、最佳装卸设备配置、最佳过驳比例、车港最佳配置等一系列... 详细信息

本文在国内首次运用 GPSS-F 仿真语言进行港口仿真,建立了船、车、港、货一体的比较完整的港口仿真模型,提出了一套相应的参数处理方法和方案评价指标.该模型能研究最佳泊位数、最佳装卸设备配置、最佳过驳比例、车港最佳配置等一系列港口规划营运问题.本文还以上海港某装卸区为背景,进行了最佳泊位数和最佳浮简过驳比例的实际仿真研究.本文工作对港口仿真建模有一般意义,并有相当应用价值.

关键词：港口仿真 GPSS-F 建模仿真语言

Cooperative User-Scheduling and Resource Allocation Optimization for Intelligent Reflecting Surface Enhanced LEO Satellite Communication

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China Communications 2024年第2期21卷 227-244页

作者： meng meng Bo Hu Shanzhi Chen Jianyin Zhang State Key Lab of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Lab of Wireless Mobile Communication China Academy of Telecommunication TechnologyBeijing 100191China Research Institute of China Mobile Beijing 100053China

Lower Earth Orbit(LEO) satellite becomes an important part of complementing terrestrial communication due to its lower orbital altitude and smaller propagation delay than Geostationary satellite. However, the LEO satellite communication system cannot meet the requirements of users when the satellite-terrestrial link is blocked by obstacles. To solve this problem, we introduce Intelligent reflect surface(IRS) for improving the achievable rate of terrestrial users in LEO satellite communication. We investigated joint IRS scheduling, user scheduling, power and bandwidth allocation(JIRPB) optimization algorithm for improving LEO satellite system *** optimization problem of joint user scheduling and resource allocation is formulated as a non-convex optimization problem. To cope with this problem, the nonconvex optimization problem is divided into resource allocation optimization sub-problem and scheduling optimization sub-problem firstly. Second, we optimize the resource allocation sub-problem via alternating direction multiplier method(ADMM) and scheduling sub-problem via Lagrangian dual method ***, we prove that the proposed resource allocation algorithm based ADMM approaches sublinear convergence theoretically. Finally, we demonstrate that the proposed JIRPB optimization algorithm improves the LEO satellite communication system throughput.

关键词： convex optimization intelligent reflecting surface LEO satellite communication OFDM

Identifying Comprehensive Genomic Alterations and Potential Neoantigens for Cervical Cancer Immunotherapy in a Cohort of Chinese Squamous Cell Carcinoma of the Cervix

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Biomedical and Environmental Sciences 2024年第6期37卷 565-580页

作者： meng Wu Jialu Zhou Zhe Zhang Yuanguang meng School of Medicine Nankai UniversityTianjin 300071China Department of Obstetrics and Gynecology The First Medical Center of Chinese PLA General HospitalBeijing 100853China Department of Obstetrics and Gynecology Chinese PLA Medical SchoolBeijing 100853China Department of Obstetrics and Gynecology The Seventh Medical Center of Chinese PLA General HospitalBeijing 100700China

Objective Genomic alterations and potential neoantigens for cervical cancer immunotherapy were identified in a cohort of Chinese patients with cervical squamous cell carcinoma(CSCC).Methods Whole-exome sequencing was used to identify genomic alterations and potential neoantigens for CSCC *** Sequencing was performed to analyze neoantigen *** Systematic bioinformatics analysis showed that C>T/G>A transitions/transversions were dominant in *** mutations were the most frequent types of somatic mutation in the coding sequence *** signature analysis detected signature 2,signature 6,and signature 7 in CSCC ***3CA,FBXW7,and BICRA were identified as potential driver genes,with BICRA as a newly reported *** variation profiling identified 4,960 potential neoantigens,of which 114 were listed in two neoantigen-related *** The present findings contribute to our understanding of the genomic characteristics of CSCC and provide a foundation for the development of new biotechnology methods for individualized immunotherapy in CSCC.

关键词： Cervical squamous cell carcinoma Genome alteration Neoantigens Immunotherapy

The influence of silica on reaction rates and molecular hydrogen(H_(2))generation during olivine hydrothermal alteration

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Science China Earth Sciences 2024年第1期67卷 222-233页

作者： Ruifang HUANG weidong SUN Xing DING Yusheng ZHAO Yibing LI Xiuqi SHANG CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China SUSTech Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Institue of Geology Chinese Academy of Geological SciencesBeijing 100037China

Hydrothermal alteration of olivine greatly influences geodynamics and the recycling of volatiles(such as water and carbon)in subduction *** is an important component of geological fluids,and its influence on the hydrothermal alteration of olivine remains poorly *** this study,we performed experiments at 300–515℃ and 3.0 kbar(1 bar=10^(5)Pa)by reacting well homogenized mixtures of olivine and silica powders with saline solutions(0.5 mol L^(−1)NaCl).Silica greatly influences the reaction pathways,reaction rates,and molecular hydrogen(H_(2))formation during olivine hydrothermal *** experiments at 300℃ and 3.0 kbar with mixtures of olivine and 10 wt%silica,olivine was replaced by serpentine and *** proportions of serpentine and talc were determined according to standard curves based on infrared spectroscopy *** 6.5%serpentine and 12%talc were produced after an experimental duration of 7 days,which had no change after a longer period(14 days).Compared to the kinetics in silica-free systems,the rates of olivine hydrothermal alteration in experiments with 10 wt%silica are much *** overall reaction is:4.5Forsterite+5.5SiO_(2),aq+4H_(2)O=Serpentine+*** the addition of more silica(20 wt%and 40 wt%),olivine was transformed into *** rates of reaction were much faster,e.g.,for experiments with olivine and 20 wt%silica,43%of talc was produced after 14 days,which increased to 77%for experiments with 40 wt%silica over the same *** overall reaction is:3Forsterite+5SiO_(2),aq+2H_(2)O=*** experiments at 400–505℃ and 3.0 kbar,the promoting effect of silica on olivine hydrothermal alteration was also observed,which is closely associated with a decrease in Gibbs free energies of olivine hydrothermal *** 300℃ and 3.0 kbar,silica decreased H_(2)formed during olivine hydrothermal alteration by around an order of magnitude,resulting in an increase in oxygen *** on measured H_(2),we calibrated ox

关键词： Olivine hydrothermal alteration Silica Serpentinization Hydrogen Serpentine

A Numerical Study on the Effect of the Backflow Hole Position on the Performances of a Self-Priming Pump

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Fluid Dynamics & Materials Processing 2024年第5期20卷 1103-1122页

作者： Dongwei Wang Lijian Cao weidong Wang Jiajun Hu School of Energy and Power Engineering Lanzhou University of TechnologyLanzhou730050China Sanlian Pump Industry Co. Ltd.Ma’anshan243000China

A self-priming pump is a centrifugal pump that has the ability to prime itself. Typically, its performance dependson the configuration of its reflux hole. In this study, the ANSYS FLUENT software is used to investigate the effectsof three different radial positions of the reflux hole on gas-liquid two-phase distribution, pressure pulsation, andimp during self-priming. The research results indicate that: (1) The effective channel size for the reflux liquid toenter the volute varies depending on the location of the reflux hole. The effect of the impeller rotation on thereflux liquid becomes more obvious as the setting distance of the reflux aperture decreases. (2) The position ofthe reflux hole significantly affects the gas phase mass fraction inside the impeller, resulting in a significant reductionin the time it takes for the mass fraction to exceed 80%. (3) The position of the reflux hole significantly affectsthe average pressure on each monitoring surface. (4) Placing the reflux hole at a excessively distant radial distancecan result in an excessive vertical component. (5) The self-priming performance of the pump can be improved tosome extent by placing the return hole at a small radial distance.

关键词： Self-priming pump self-priming time numerical calculation gas-liquid two-phase flow