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科技人才集聚与区域创新环境共生演化及仿真研究

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软科学 2020年第7期34卷 14-21页

作者：曾建丽刘兵梁林天津城建大学经济与管理学院天津300384 河北工业大学经济管理学院天津300401 河北工业大学京津冀发展研究中心天津300401

探讨科技人才集聚受到Allee效应影响时与区域创新环境共生演化问题。构建科技人才集聚与区域创新环境互惠共生演化模型,分析共生演化模型的平衡点及稳定条件;并以雄安新区为例,对不同的稳定条件进行仿真,进而提出促进科技人才集聚与区... 详细信息

探讨科技人才集聚受到Allee效应影响时与区域创新环境共生演化问题。构建科技人才集聚与区域创新环境互惠共生演化模型,分析共生演化模型的平衡点及稳定条件;并以雄安新区为例,对不同的稳定条件进行仿真,进而提出促进科技人才集聚与区域创新环境共生演化的策略。结果表明:科技人才集聚与区域创新环境的演化趋势符合预设的共生演化模型的运行轨迹;共生演化模型的稳定取决于Allee效应、科技人才集聚初始规模、科技人才集聚与区域创新环境共生系数的取值。

关键词：科技人才集聚区域创新环境共生演化仿真雄安新区

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景观生态学在国土空间治理中的应用

自然资源学报 2020年第1期35卷 14-25页

作者：吴健生王仰麟张小飞彭建刘焱序北京大学城市规划与设计学院城市人居环境科学与技术重点实验室深圳518055 北京大学城市与环境学院地表过程与模拟教育部重点实验室北京100871 北京师范大学地表过程与资源生态国家重点实验室北京100875

鉴于当前国土空间治理面临复杂的人类活动与自然环境相互作用而产生的生态风险与空间利用问题,基于景观生态学学科特质与生态文明建设要求,对当前国土空间治理工作进行梳理,归纳了明确的生态系统服务定位、高效的建成空间结构、适宜且... 详细信息

鉴于当前国土空间治理面临复杂的人类活动与自然环境相互作用而产生的生态风险与空间利用问题,基于景观生态学学科特质与生态文明建设要求,对当前国土空间治理工作进行梳理,归纳了明确的生态系统服务定位、高效的建成空间结构、适宜且多样的产业发展支撑、多等级的生态系统服务与安全保障等国土空间治理需求。同时,整合区域时空信息的理论基础与分析手段,提出景观生态学在国土空间治理中应落脚于:(1)识别并统一不同空间尺度的治理单元;(2)辨析并评估景观功能的空间分异;(3)构建基于生态风险防范的区域景观格局;(4)识别集约高效的城乡协调发展格局;(5)提出尺度联系的绿色发展架构;(6)明晰多级多样的生态保障方案。

关键词：国土空间治理景观生态学景观功能景观格局等级和尺度

基于数据包络分析与灰色熵的院线网络营销绩效研究

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中国管理科学 2023年第5期31卷 240-248页

作者：周珍见红玉黄嘉佩林云首都师范大学管理学院北京100089

本文以42家国内院线作为研究样本,利用数据包络分析(DEA)和灰色熵权法分析了网络营销对院线绩效的影响,得出以下结论:极少部分院线的市场占有率大且网络营销水平高,多数院线在网络营销方面尚有很大进步空间;网络营销与院线绩效呈正向相... 详细信息

本文以42家国内院线作为研究样本,利用数据包络分析(DEA)和灰色熵权法分析了网络营销对院线绩效的影响,得出以下结论:极少部分院线的市场占有率大且网络营销水平高,多数院线在网络营销方面尚有很大进步空间;网络营销与院线绩效呈正向相关的关系;网络营销工具中各属性对于院线绩效正向影响程度由大到小排序分别是:在线交易、影院设施、互动功能、基本信息、促销活动。本文在研究结论基础上,从网络营销实施过程和构建网络营销平台两方面给出了可行性建议。

关键词：网络营销院线营销数据包络分析灰色熵权法

Evaluation of CdZnTe spectrometer performance in measuring energy spectra during interventional radiology procedure

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Nuclear Science and Techniques 2019年第9期30卷 55-60页

作者： lin Chai Lian Chen Cui-Ping Yang Dong-Dong Zhou Meng-Meng Yang Wei-Wei Qu Gao-Long Zhang Da-Qian Hei Shou-Ping Xu Xin-jian Chen State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection Soochow University Suzhou 215123 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Collaborative Innovation Center of Radiological Medicine of jiangsu Higher Education Institutions Suzhou 215123 China school of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang University Beijing 100083 China College of Materials Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing 211106 China Department of Radiation Oncology PLA General Hospital Beijing 100853 China

Interventional radiology has been beneficial for patients for over 30 years of age with the combination of diagnostic and therapeutic methods. The radiation affecting occupationally exposed workers should be evaluated by means of the energy spectra and flux of X-rays in the treatment room. The present study aims to obtain the energy spectra of interventional procedures and study the capability of some detectors to evaluate the dose in interventional procedures. These measurements were taken by silicon-drift, CdTe, and CdZnTe detectors. The energy spectra were corrected by the energy-response curve of each detector. The energy-response curves of silicon-drift and CdTe detectors provided by the manufacturers specification were used. The energy response of the CdZnTe detector was measured by 133Ba and 152Eu γ sources. The experimental data were compared with the simulation results, and their perfect agreement provides a way to correct the energy or dose response, which can be used for the personal dosimeter developed by our group. Moreover, the measured energy spectra can be used in individual radiation protection. The present study shows that the CdZnTe detector is a good candidate detector in interventional procedures.

关键词： Interventional radiology procedures Energyresponse curve Energy spectrum Radiation protection

考虑非期望因素的决策单元排序:两阶段综合效率法

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运筹与管理 2021年第10期30卷 57-63页

作者：张琳彦陈鸣徐倩张健北京信息科技大学经济管理学院北京100192 北京理工大学管理与经济学院北京100081 北京知识管理研究基地北京100192 绿色发展大数据决策北京市重点实验室北京100192

对所有平行级别上的同等类型的决策单元(DMUs)在绩效表现上的排序一直是管理决策领域研究的重要课题之一。基于数据包络分析的超效率理论和SBM模型,探讨考虑非期望因素的DMUs排序问题。首先构建新的考虑非期望因素的超效率SBM模型,此模... 详细信息

对所有平行级别上的同等类型的决策单元(DMUs)在绩效表现上的排序一直是管理决策领域研究的重要课题之一。基于数据包络分析的超效率理论和SBM模型,探讨考虑非期望因素的DMUs排序问题。首先构建新的考虑非期望因素的超效率SBM模型,此模型不仅能对有效DMUs排序,而且能够转化成线性规划问题求解,具有有界性、单调性等良好性质。然后将新模型与Tone的SBM模型结合提出了考虑非期望因素的SBM综合排序法,同时给出了相对应的多项式时间算法。该方法以SBM模型作为第一阶段完成非有效DMUs排序,以新模型作为第二阶段完成有效DMUs排序,两阶段综合即完成所有DMUs排序。研究结果表明,综合排序法能够完成对考虑非期望因素的DMUs的排序,为绩效评价的管理实践提供了重要的理论依据。选取中国2010年的30个省份为实证研究对象,应用所提出的综合效率排序法对其环境效率进行排序。分析结果与中国的现实情况的相吻合,表明该排序方法是合理的,能够完成对这些地区的环境效率进行排序,可以为决策者评价环境的绩效表现提供有效的决策支持。

关键词：效率排序非期望因素 SBM模型超效率综合效率

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煤粒瓦斯放散模型及规律研究

北京理工大学学报 2020年第10期40卷 1057-1063,1071页

作者：郝永江胡杰梁磊谢建林秦跃平太原科技大学环境与安全学院山西太原030024 中煤科工集团重庆研究院有限公司重庆400037 中国矿业大学(北京)应急管理与安全工程学院北京100083

为了更准确地描述煤粒瓦斯的放散过程,设计了有限空间内煤粒瓦斯放散实验.实验结果表明瓦斯累积放散量倒数与时间n次方倒数成线性关系,且拟合度达到0.99以上,由此得出了煤粒瓦斯的放散模型.以达西定律为基础,构建了有限空间内瓦斯放散... 详细信息

为了更准确地描述煤粒瓦斯的放散过程,设计了有限空间内煤粒瓦斯放散实验.实验结果表明瓦斯累积放散量倒数与时间n次方倒数成线性关系,且拟合度达到0.99以上,由此得出了煤粒瓦斯的放散模型.以达西定律为基础,构建了有限空间内瓦斯放散数学模型,采用有限差分编程解算,得到了与实验对应压力下,瓦斯流动过程中累积放散量及放散速度随时间的变化规律.通过对比分析,理论上验证了煤粒瓦斯放散模型的准确性,模拟结果与实验结果较好的吻合也进一步证实了瓦斯在煤粒中的流动符合达西定律.

关键词：有限空间放散模型达西定律数学模型有限差分

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碳中和目标下我国能源发展战略探讨

中国科学院院刊 2021年第9期36卷 1001-1009页

作者：苏健梁英波丁麟张国生刘合中国石油大学(华东)经济管理学院青岛266580 中国石油勘探开发研究院北京100083

2020年国家主席习近平在第75届联合国大会一般性辩论上作出了力争2030年前实现碳达峰、2060年前实现碳中和的承诺。作为世界最大的能源消费国和碳排放国,实现碳中和目标对我国能源和经济可持续发展提出了更高要求。近年来,虽然我国能源... 详细信息

2020年国家主席习近平在第75届联合国大会一般性辩论上作出了力争2030年前实现碳达峰、2060年前实现碳中和的承诺。作为世界最大的能源消费国和碳排放国,实现碳中和目标对我国能源和经济可持续发展提出了更高要求。近年来,虽然我国能源消费增速放缓,碳排放逐渐进入平台期,但我国能源消费结构中化石能源占比仍高达80%以上。碳中和目标下,在借鉴发达国家调整能源消费结构与碳减排做法的基础上,如何加快我国能源转型,明确碳中和目标下能源转型的战略路径值得深入探讨。碳中和是我国经济社会发展的战略目标,也是推进我国能源革命的重要举措,更是实现文明跨越的重要抓手。在实现碳中和的道路上,我国需要在电力、工业、建筑、农业等领域不断努力,减少碳排放量,谋划最优的战略路径,努力实现碳减排和经济发展并行不悖。

关键词：碳达峰碳中和碳减排能源消费结构趋势预测战略路径

Diagnosis and treatment of herpangina:Chinese expert consensus

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World Journal of Pediatrics 2020年第2期16卷 129-134页

作者： Hui Yu Xing-Wang Li Quan-Bo Liu Hui-ling Deng Gang Liu Rong-Meng jiang Ji-Kui Deng Ying-Zi Ye jian-Hua Hao Ying-Hu Chen Guang-Min Nong Zhao-Bo Shen Chang-Shan Liu Ying-Xue Zou Jin-Zhun Wu Xing-Dong Wu Bi-Quan Chen Ru-Ping Luo Ai-Wei lin Yan Chen Xiao-Dong Liu Department of Infectious Diseases Children's Hospital of Fudan UniversityShanghaiChina Infectious Disease Diagnosis and Treatment Center Beijing Ditan Hospital Capital Medical UniversityBeijingChina Department of Infectious Diseases Children's Hospital of Chongqing Medical UniversityChongqingChina Department of Infectious Diseases The Children's Hospital of Xi'anXi'anChina Department of Infectious Diseases Beijing Children's HospitalCapital Medical UniversityBeijingChina Department of Infectious Diseases Shenzhen Children's HospitalShenzhenChina Department of Internal Medicine Children's Hospital of Kaifeng CityKaifengChina Department of Infectious Diseases The Children's Hospital-Zhejiang University School of MedicineHangzhouChina Department of Pediatrics The First Affiliated Hospital of Guangxi Medical UniversityGuangxiChina Pneumology Department Henan Children's HospitalHenanChina Department of Pediatrics The Second Hospital of Tianjin Medical UniversityTianjinChina Department of Infectious Diseases Tianjin Children's HospitalTianjinChina Department of Pediatric Pneumology The First Affiliated Hospital of Xiamen UniversityXiamenChina Department of Pediatrics Xiamen Maternal and Child Health Care HospitalXiamenChina Department of Infectious Diseases Anhui Provincial Children's HospitalHefeiChina Department of Infectious Diseases Hunan Children's HospitalHunanChina Department of Infectious Diseases Qilu Children's Hospital of Shandong UniversityShandongChina Department of Pediatrics Internal Medicine Affiliated Hospital of Zunyi Medical UniversityZunyiChina

Background Herpangina is a common infectious disease in childhood caused by an *** consensus is aiming to standardize and improve herpangina prevention and clinical *** The Subspecialty Group of Infectious Diseases,the Society of Pediatric,Chinese Medical Association and Nation Medical Quality Control Center for Infectious Diseases gathered 20 experts to develop the consensus,who are specialized in diagnosis and treatment of *** The main pathogenic serotypes of herpangina include Coxsackievirus-A,Enterovirus-A and *** diagnosis can be rendered on the basis of history of epidemiology,typical symptoms,characteristic pharyngeal damage and virological *** treatment is mainly symptomatic,and incorporates topical oral spray with antiviral *** course of herpangina generally lasts 4-6 days with a good *** The consensus could provide advices and references for the diagnosis,treatment and management of herpangina in children.

关键词： Herpangina Diagnosis Treatment Consensus

Medical expenditure for esophageal cancer in china:a 10-year multicenter retrospective survey(2002-2011)

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Chinese Journal of Cancer 2017年第11期36卷 548-559页

作者： Lan-Wei Guo Hui-Yao Huang Ju-Fang Shi Li-Hong Lv Ya-Na Bai A-Yan Mao Xian-Zhen Liao Guo-Xiang Liu jian-Song Ren Xiao-Jie Sun Xin-Yu Zhu Jin-Yi Zhou Ji-Yong Gong Qi Zhou lin Zhu Yu-Qin Liu Bing-Bing Song ling-Bin Du Xiao-Jing Xing Pei-An Lou Xiao-Hua Sun Xiao Qi Shou-ling Wu Rong Cao Li Lan Ying Ren Kai Zhang Jie He jian.Gong Zhang Min Dai Department of Cancer Epidemiology Henan Office for Cancer Control and Research The Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital No. 127 Dongming Road Zhengzhou 450008 Henan P. R China Program Office for Cancer Screening in Urban china Cancer Hospital Chinese Academy of Medical Sciences (CAMS) Peking Union Medical College National Cancer Center of China No. 17 Panjiayuannanli Chaoyang District Beijing 100021 P. R. China Department of Human Resources The Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital Zhengzhou 450008 Henan P. R. China Institute of Epidemiology and Health Statistics Lanzhou University Lanzhou 730000 Gansu P. R. China Public Health Information Research Office Institute of Medical Information Chinese Academy of Medical Sciences (CAMS) Beijing 100020 P. R. China Hunan Office for Cancer Control and Research Hunan Provincial Cancer Hospital Changsha 410006 Hunan P. R. China Department of Health Economics school of Health management Harbin Medical University Harbin 150081 Heilongjiang P. R. China Center for Health management and Policy Key Lab of Health Economics and Policy Shandong University Jinan 250012 Shandong P. R. China Institute of Chronic Non.Communicable Diseases Prevention and Control Jiangsu Provincial Center for Disease Control and Prevention Nanjing 210009 Jiangsu P. R. China Science and Education Department Public Health Division Shandong Tumor Hospital Jinan 250117 Shandong P. R. China Chongqing Office for Cancer Control and Research Chongqing Cancer Hospital Chongqing 400030 P. R. China Teaching and Research Department Affiliated Cancer Hospital of Xinjiang Medical University ürümqi 830011 Xinjiang P. R. China Cancer Epidemiology Research Center Gansu Provincial Cancer Hospital Lanzhou 730050 Gansu P. R. China Heilongjiang Office for Cancer Control and Research Affiliated Cancer Hospital of Harbin Medical University Harbin 150081 Heilongjiang P R. China Zhejiang Office for Cancer

Background: Esophageal cancer is associated with substantial disease burden in china, and data on the economic burden are fundamental for setting priorities in cancer interventions. The medical expenditure for the diagnosis and treatment of esophageal cancer in china has not been fully quantified. This study aimed to examine the medical expenditure of Chinese patients with esophageal cancer and the associated ***: From 2012 to 2014, a hospital-based multicenter retrospective survey was conducted in 37 hospitals in 13 provinces/municipalities across china as a part of the Cancer Screening Program of Urban china. For each esophageal cancer patient diagnosed between 2002 and 2011, clinical information and expense data were extracted by using structured questionnaires. All expense data were reported in Chinese Yuan(CNY; 1 CNY = 0.155 USD) based on the2011 value and inflated using the year-specific health care consumer price index for ***: A total of 14,967 esophageal cancer patients were included in the analysis. It was estimated that the overall average expenditure per patient was 38,666 CNY, and an average annual increase of 6.27% was observed from 2002(25,111 CNY) to 2011(46,124 CNY). The average expenditures were 34,460 CNY for stage Ⅰ,39,302 CNY for stage Ⅱ,40,353 CNY for stage Ⅲ, and 37,432 CNY for stage IV diseases(P china substantially increased in the last 10 years, treatment for early-stage esophageal cancer costs less than that for advanced cases, and spending on drugs continued to account for a considerable proportion of the overall expenditure.

关键词： Esophageal neoplasms Medical expenditure Diagnosis and treatment china