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Influencing factors and preventive measures of infectious complications after intestinal resection for Crohn’s disease
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作者 Shi-Rong Lv Xiao Huang +4 位作者 Li-Yun Zhou Jie Shi Chu-Chu Gong Ming-Ke Wang Ji-Shun Yang 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第10期3363-3370,共8页
The incidence of Crohn’s disease(CD)has increased in recent years,with most patients requiring intestinal resection.Complications after intestinal resection for CD can lead to poor prognosis and recurrence,among whic... The incidence of Crohn’s disease(CD)has increased in recent years,with most patients requiring intestinal resection.Complications after intestinal resection for CD can lead to poor prognosis and recurrence,among which infectious complic-ations are the most common.This study aimed to investigate the common risk factors,including medications,preoperative nutritional status,surgery-related factors,microorganisms,lesion location and type,and so forth,causing infectious complications after intestinal resection for CD,and to propose corresponding preventive measures.The findings provided guidance for identifying suscept-ibility factors and the early intervention and prevention of infectious complic-ations after intestinal resection for CD in clinical practice. 展开更多
关键词 Crohn’s disease Intestinal resection Postoperative infectious complications influencing factors Preventive measures
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Study on Influencing Factors of Tourism Income in Yantai City Based on Multiple Linear Regression Analysis
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作者 Yue Guan Meng Tian Li Wang 《Proceedings of Business and Economic Studies》 2024年第6期99-105,共7页
As one of the first coastal open cities in China,Yantai City is situated in the eastern Shandong Peninsula,bordered by the Yellow Sea and Bohai Sea.With the continuous improvement of tourism infrastructure,public enth... As one of the first coastal open cities in China,Yantai City is situated in the eastern Shandong Peninsula,bordered by the Yellow Sea and Bohai Sea.With the continuous improvement of tourism infrastructure,public enthusiasm for tourism in Yantai has been growing.To formulate more effective tourism development policies tailored to the local context,this study examines Yantai City using a multiple linear regression model to identify the primary factors influencing domestic tourism income.Based on the findings,this paper proposes scientifically grounded and actionable strategies to further optimize the development of tourism in Yantai City. 展开更多
关键词 Tourism income Multiple linear regression influencing factors Publisher’s note Bio-Byword scientific
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Assessment on the Two New Factors That Influence China's International Environment
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作者 Jin Canrong 《Contemporary International Relations》 2002年第12期20-26,共7页
The development and changes in international situation after September 11 have exerted complicated influence on China’s external security environment. Therefore, how to judge current international security environmen... The development and changes in international situation after September 11 have exerted complicated influence on China’s external security environment. Therefore, how to judge current international security environment that China faces has become a very hot subject for discussion. 展开更多
关键词 In Assessment on the Two New factors That influence China’s International Environment
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The Analysis on Chinese Women's Olympic Gold Medal Special Features and Influence Factors
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作者 Daling Shi Yuling Song +1 位作者 Xinjian Luo Aicui Hu 《International English Education Research》 2014年第2期5-8,共4页
This paper mainly by using the method of literature, mathematical statistics, the Beijing Olympic gold medal to our country distribution of statistical analysis, aiming at improving the Chinese competitive sports scor... This paper mainly by using the method of literature, mathematical statistics, the Beijing Olympic gold medal to our country distribution of statistical analysis, aiming at improving the Chinese competitive sports scores, strengthening our country provides the reference for the development of the Olympic Games and countermeasures, make our country to create more outstanding achievemenL and soon become physical power. 展开更多
关键词 Women's Olympic Gold Medal special Features influence factors
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Henry's Law constant for phosphine in seawater:determination and assessment of influencing factors 被引量:2
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作者 付梅 俞志明 +1 位作者 卢光远 宋秀贤 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2013年第4期860-866,共7页
The Henry's Law constant (k) for phosphine in seawater was determined by multiple phase equilibration combined with headspace gas chromatography. The effects of pH, temperature, and salinity on k were studied. The ... The Henry's Law constant (k) for phosphine in seawater was determined by multiple phase equilibration combined with headspace gas chromatography. The effects of pH, temperature, and salinity on k were studied. The k value for phosphine in natural seawater was 6.415 at room temperature (approximately 23℃). This value increases with increases in temperature and salinity, but no obvious change was observed at different pH levels. At the same temperature, there was no significant difference between the k for phosphine in natural seawater and that in artificial seawater. This implies that temperature and salinity are major determining factors for k in marine environment. Double linear regression with Henry's Law constants for phosphine as a function of temperature and salinity confirmed our observations. These results provide a basis for the measurement of trace phosphine concentrations in seawater, and will be helpful for future research on the status of phosphine in the oceanic biogeochemical cycle of phosphorus. 展开更多
关键词 PHOsPHINE Henry's Law constant seawater influencing factors multiple phase equilibration
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Research on China's Aquaculture Efficiency Evaluation and Influencing Factors with Undesirable Outputs 被引量:2
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作者 JI Jianyue WANG Pingping 《Journal of Ocean University of China》 SCIE CAS 2015年第3期569-574,共6页
Taking the aquaculture area, the number of farming boats and that of aquaculturist as input variables, the aquaculture production as desirable output variable and polluted economic loss as undesirable output variable,... Taking the aquaculture area, the number of farming boats and that of aquaculturist as input variables, the aquaculture production as desirable output variable and polluted economic loss as undesirable output variable, this paper conducts SBM model to evaluate the aquaculture efficiency based on the data of 16 aquaculture-developed provinces in China from 2004 to 2011. The results show the efficiency in China has not changed much in recent years with the efficiency values mainly between 0.39 and 0.53, and the efficiency of marine-aquaculture-dominated provinces is generally higher than that of freshwater-aquaculture-dominated ones. To analyze the difference under the efficiency, the panel Tobit model is used with education level factor, training factor, technology extension factor, technical level factor, scale factor and species factor as the efficiency influencing factors. The results show that technology extension factor and technical level factor have significant positive influence. 展开更多
关键词 China's aquaculture industry efficiency evaluation influencing factors sBM model panel Tobit model
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Screening influencing factors of blood stasis constitution in traditional Chinese medicine 被引量:5
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作者 ZHOU Xiaoying YANG Shengwen +3 位作者 OU Jintao WANG Zhuo WANG Guangrong LUO Yue 《Digital Chinese Medicine》 2022年第2期169-177,共9页
Objective To study the influencing factors of blood stasis constitution and provide a basis for treating blood stasis-related diseases by traditional Chinese medicine(TCM) constitution identification.Methods Data were... Objective To study the influencing factors of blood stasis constitution and provide a basis for treating blood stasis-related diseases by traditional Chinese medicine(TCM) constitution identification.Methods Data were collected using the self-developed TCM constitution identification platform based on B/S model by the project team. The obtained data were divided into blood stasis constitution and normal constitution groups. The differences of the categorical type influencing factors(gender, birth mode, feeding mode within four months of birth, family history, marital status, eating habits, sleeping habits, exercise habits, emotional state, stress situation, and living environment) and the quantitative type influencing factors(sleep time, age,and mother’s age at birth) on the constitution of the two groups were analyzed. In the singlefactor analysis, the Pearson’s chi-square test was selected for the categorical variable, and the independent sample t test and Mann-Whitney U nonparametric test were selected for the quantitative variables according to whether they conformed to the positive-terrestrial distribution;the binary logistic stepwise regression method was selected for the multi-factor analysis.Results The data of 318 cases were collected from the TCM composition identification platform, and 159 cases of blood stasis constitution were used as the experimental group and 159 cases of normal constitution were used as the control group. The Pearson’s chi-square test yielded significant differences(P < 0.05) in the effects of gender, pressure situation, family history, living environment, emotional state, exercise habits, and dietary habits on blood stasis constitution. The independent samples t test yielded differences in sleep duration between the blood stasis constitution and normal constitution populations(P < 0.05), which meant sleep duration of the blood stasis constitution population was less than that of the normal constitution population. The Mann-Whitney U nonparametric test results accepted the original hypothesis that there was no difference in the distribution of age and mother’s age at birth across constitution types(P > 0.05). Binary logistic regression analysis showed that gender, family history, marital status, living environment, exercise habits, and emotional state were risk factors for blood stasis constitution(P < 0.05).Conclusion Gender, family history, living environment, emotional state, and exercise habits were significant influencing factors of blood stasis constitution. Blood stasis constitution populations can pay more attention to these influencing factors in their daily life for the prevention and reconciliation of blood stasis constitution. 展开更多
关键词 Blood stasis constitution screening influencing factors Pearson’s chi-square test Nonparametric test Binary logistic stepwise regression
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Study on Influencing Factors of Capital Structure of Energy Listed Companies
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作者 HUANGGuo-liang LIQiang 《Journal of China University of Mining and Technology》 EI 2005年第1期56-59,76,共5页
Based on the determinative factors school of capital structure theory, this paper uses the data of 35 Chinese energy listed companies from 2000 to 2003, and adopts multi-variable regression method to make an empirical... Based on the determinative factors school of capital structure theory, this paper uses the data of 35 Chinese energy listed companies from 2000 to 2003, and adopts multi-variable regression method to make an empirical study of the influencing factors of their capital structure. The results indicate that the factors of size, income volatility, and the concentration of owner’s equity have positive relation with the capital structure, while the relation between profit- ability and capital structure is negative. It is also found that the influencing of growth and secured asset on the capital structure are relatively insignificant. 展开更多
关键词 energy listed companies capitcal structure influencing factors concentration of owner’s equity multi-variable regression
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油井管在CO_(2)/H_(2)S体系中的腐蚀行为研究进展 被引量:1
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作者 李岩 朱世东 +1 位作者 李光 杨帆 《化工技术与开发》 CAS 2024年第3期26-35,共10页
CO_(2)和H_(2)S引起的腐蚀问题备受关注。CO_(2)/H_(2)S体系是导致石油管材发生腐蚀、断裂、穿孔等失效的主要原因,高温、高压、高含Cl-的“三高”井下环境以及高含硫气藏的开发环境,进一步加剧了管材的腐蚀,严重威胁井筒的安全。本文... CO_(2)和H_(2)S引起的腐蚀问题备受关注。CO_(2)/H_(2)S体系是导致石油管材发生腐蚀、断裂、穿孔等失效的主要原因,高温、高压、高含Cl-的“三高”井下环境以及高含硫气藏的开发环境,进一步加剧了管材的腐蚀,严重威胁井筒的安全。本文论述了CO_(2)和H_(2)S的腐蚀机理,概括了pH值、温度、H_(2)S分压、Cl^(-)浓度等因素对油井管腐蚀规律的影响,重点分析了CO_(2)/H_(2)S的分压比对管材CO_(2)/H_(2)S腐蚀的作用机制。结果表明,CO_(2)/H_(2)S的分压比对CO_(2)/H_(2)S体系下的腐蚀起着重要作用,不同的CO_(2)/H_(2)S分压比能够改变腐蚀过程,且对CO_(2)/H_(2)S的竞争协同机制存在一定的影响,高CO_(2)/H_(2)S分压比还会引起局部腐蚀。最后,对CO_(2)/H_(2)S体系下管材的腐蚀研究进行了展望。 展开更多
关键词 CO_(2) H_(2)s 腐蚀机理 影响因素 竞争协同
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集体经营性建设用地入市农户满意度影响因素研究——基于Logistic-ISM模型的分析
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作者 周香梅 王恒伟 刘秀华 《西南大学学报(自然科学版)》 CAS CSCD 北大核心 2024年第7期57-70,共14页
农户满意程度可以反映政策改革成效,探究农户集体经营性建设用地入市满意度影响因素,有助于评价政策实施效果,同时对提升农村发展和农民幸福感也有一定的现实意义.采用问卷调查和访谈的方式,选取重庆市大足区作为研究区域,基于Logistic... 农户满意程度可以反映政策改革成效,探究农户集体经营性建设用地入市满意度影响因素,有助于评价政策实施效果,同时对提升农村发展和农民幸福感也有一定的现实意义.采用问卷调查和访谈的方式,选取重庆市大足区作为研究区域,基于Logistic模型确定农户满意度的影响因素,结合ISM模型分析各影响因素之间的层次关系,对农民的政策实施满意度影响因素进行实证分析.研究结果显示:(1)针对入市实施效果,绝大部分农户持满意态度,不满意的地方集中在收益分配不及时和环境污染方面;(2)家中是否有村干部、生态环境变化情况、是否参与表决、分配公平性、入市实际收益、程序透明性、入市风险存在情况、对入市土地所有者的认知对入市农户满意度有显著影响.其中对入市土地所有者的认知、入市风险存在情况、入市实际收益为表层直接因素,中层间接因素有生态环境变化情况、是否参与表决、分配公平性以及程序透明性,家中是否有村干部为深层根源因素.应进一步完善土地产权制度,明晰入市到期后土地权属问题;健全监督管理机制,建立集体经营性建设用地入市单位的产业目录和准入标准制度;完善收益分配机制,制定集体土地入市指导性分配意见;将村集体负责人纳入政府基层领导队伍体系,提高程序透明性. 展开更多
关键词 集体经营性建设用地入市 满意度 影响因素 Logistic-IsM模型 大足区
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Physician-dependent diagnosis delay in Crohn's disease:A pseudoproposition or not?
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作者 Yan Zeng Jun-Wen Zhang Jian Yang 《World Journal of Gastroenterology》 SCIE CAS 2024年第38期4242-4245,共4页
The challenge of diagnosis delay in inflammatory bowel disease(IBD)has emerged as a significant concern for both patients and healthcare professionals.The widely accepted notion that there is an extended time frame fr... The challenge of diagnosis delay in inflammatory bowel disease(IBD)has emerged as a significant concern for both patients and healthcare professionals.The widely accepted notion that there is an extended time frame from the onset of symptoms to the definitive diagnosis is often attributed to the heterogeneity of IBD and the non-specificity of clinical manifestations.Specific to patients with Crohn’s disease,the issue of delayed diagnosis appears to be more pronounced across different regions globally.The intricate interplay of real-world factors has led to debates regarding the primary contributors to these diagnostic delays.Drawing a comparison solely between patients and physicians and implicating the latter as the predominant influence factor may fall into a simplistic either-or logical trap that may obscure the truth.This letter,grounded in published evidence,explores areas for improvement in a forthcoming paper within the field,hoping to pinpoint the culprit behind the diagnosis delay issue for IBD patients rather than simply attributing it to so-called“physician-dependent factors”.Our objective is to motivate healthcare providers and policymakers in relevant fields to reflect on strategies for addressing this problem to reduce diagnostic delays and enhance patient outcomes. 展开更多
关键词 Inflammatory bowel disease Crohn’s disease Diagnosis delay influencing factors Culprit
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The Impact and Intervention of Handheld Tai Chi Water-Resistance Fitness Ball on Middle-Aged and Elderly Patients with Parkinson’s Disease
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作者 He Huang 《Health》 2024年第4期319-349,共31页
Through the use of a survey and statistical methods, this study explores the effects and interventions of handheld Tai Chi water resistance fitness balls on the elderly with Parkinson’s disease. Firstly, a questionna... Through the use of a survey and statistical methods, this study explores the effects and interventions of handheld Tai Chi water resistance fitness balls on the elderly with Parkinson’s disease. Firstly, a questionnaire on exercise compliance for patients with Parkinson’s disease was developed, and its reliability and validity were tested. Then, a survey was conducted to investigate the current status of exercise compliance among Parkinson’s disease patients, including general information, scoring status, and single and multiple factor analyses of influencing factors [1]. The results of the study show that through qualitative research, the dimensions and item pools of the questionnaire were initially constructed, and the reliability analysis of the questionnaire was conducted through Delphi expert consultation, with favorable results in terms of its reliability and validity [2]. Regarding the current status of exercise compliance among Parkinson’s disease patients, the study found that the level of exercise compliance needs improvement, and there are significant differences in exercise compliance levels among patients under different circumstances. Finally, the research results were discussed and conclusions were drawn. The innovation of this study lies in the development of a questionnaire on exercise compliance for patients with Parkinson’s disease and the preliminary qualitative research and Delphi expert consultation conducted on it, providing new ideas and methods for the study of exercise compliance. However, the study also has limitations as it did not examine the effects of other interventions on Parkinson’s disease, so further research should be conducted [3]. 展开更多
关键词 Parkinson’s Disease Exercise Compliance Tai Chi Water Resistance Fitness Ball influencing factors Intervention Effectiveness
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X52钢在含H_(2)S水溶液中的腐蚀规律研究
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作者 孙新乐 《石油化工腐蚀与防护》 CAS 2024年第4期15-19,35,共6页
本试验采用高压反应釜对X52钢在不同条件下(温度、H_(2)S浓度、NaCl浓度、介质流速)的H_(2)S腐蚀行为进行了研究,并对试样腐蚀速率和表面腐蚀产物形貌进行评价分析。试验结果表明:(1)当温度低于60℃时,腐蚀速率随着温度升高而增大;温度... 本试验采用高压反应釜对X52钢在不同条件下(温度、H_(2)S浓度、NaCl浓度、介质流速)的H_(2)S腐蚀行为进行了研究,并对试样腐蚀速率和表面腐蚀产物形貌进行评价分析。试验结果表明:(1)当温度低于60℃时,腐蚀速率随着温度升高而增大;温度高于60℃时,随着温度升高腐蚀速率减小,试样表面转化为保护性好、附着力强、致密的腐蚀产物膜;(2)H_(2)S浓度的增加对腐蚀速率无明显的影响;(3)腐蚀速率随着NaCl浓度升高而下降;(4)腐蚀速率随介质流速增大而增大。 展开更多
关键词 X52 H_(2)s腐蚀 腐蚀产物形貌 腐蚀速率 影响因素
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基于变权重和D-S证据理论的桥梁安全评估 被引量:16
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作者 梁力 孙爽 +1 位作者 李明 李鑫 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2019年第1期99-103,共5页
桥梁结构的安全评估受环境侵蚀、材料老化、外部荷载等多源因素的影响,采用单一指标评价桥梁的安全性容易产生误判.因此,提出一种基于信息融合的多因素桥梁安全评估方法.该方法首先确定每种因素的变化区间,通过多工况数值计算提取典型... 桥梁结构的安全评估受环境侵蚀、材料老化、外部荷载等多源因素的影响,采用单一指标评价桥梁的安全性容易产生误判.因此,提出一种基于信息融合的多因素桥梁安全评估方法.该方法首先确定每种因素的变化区间,通过多工况数值计算提取典型的力学指标,利用信息熵和模糊层次分析法确定指标的变权重及单指标的等级划分原则并转化为基本概率指派函数.采用Dempster组合规则确定融合后的安全等级,从而建立桥梁的安全评估先验数据库.将该方法应用于预应力连续梁桥的安全评估中,结果表明该评估方法客观、合理,具有一定的工程实用性. 展开更多
关键词 桥梁工程 安全评估 D-s证据理论 多源影响因素 变权重
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基于Logistic模型的农地流转农户意愿影响因素研究 被引量:15
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作者 刘洋 刘惠君 《安徽农业科学》 CAS 北大核心 2011年第2期962-963,969,共3页
为了分析影响农户农地流转的因素,为农地流转的定性研究提供量化的依据和支持,采用抽样调查、Logistic模型进行分析。结果表明,农户参与土地流转的意愿是受到非农就业率等多种因素的影响和制约的,农户农地流转意愿的影响因素按贡献率由... 为了分析影响农户农地流转的因素,为农地流转的定性研究提供量化的依据和支持,采用抽样调查、Logistic模型进行分析。结果表明,农户参与土地流转的意愿是受到非农就业率等多种因素的影响和制约的,农户农地流转意愿的影响因素按贡献率由大到小排序为非农就业率、恩格尔系数、单位面积农业纯收入、交通便捷度、签订流转书面合同比率、农地流转主导因素、家庭最高文化程度、粮食安全保障率、经济发展水平、家庭人口数、农业劳动力人数和被访者年龄。为提高农户参与土地流转的积极性,促进农村土地流转,建议给农民创造更多的就业机会,提高农业比较效益,完善农村基础设施,发挥政府的监督管理和服务职能,加强部分农民的思想改造工作,扩大农民受教育的途径,提高农民文化素质。 展开更多
关键词 影响因素 LOGIsTIC模型 农地流转 流转意愿
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我国老年人主观幸福感的影响因素研究——基于Anderson健康行为模型的实证分析 被引量:35
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作者 徐鹏 周长城 《社会保障研究》 CSSCI 2014年第2期43-52,共10页
论文基于美国学者Anderson提出的健康行为模型尝试构建了老年人主观幸福感影响因素的理论分析框架,在此基础上利用"2006年中国综合社会调查"(CGSS2006)数据库系统考察了诱因性人口学因素、赋能性因素、需求性因素以及健康行... 论文基于美国学者Anderson提出的健康行为模型尝试构建了老年人主观幸福感影响因素的理论分析框架,在此基础上利用"2006年中国综合社会调查"(CGSS2006)数据库系统考察了诱因性人口学因素、赋能性因素、需求性因素以及健康行为因素对我国老年人主观幸福感的影响。实证分析结果表明,政府部门应以提升老年人主观幸福感为政策措施的出发点和落脚点,帮助促进老年人人际关系的和谐化,鼓励老年人多参加健身和体育锻炼活动,减少老年人对健康服务的过度依赖,帮助维持并提高老年人的健康状况;更重要的是要深入进行养老保障体制改革,在物质和精神上为老年人提供更为全面的养老保障。 展开更多
关键词 老年人 主观幸福感 影响因素 Anderson健康行为模型
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基于广义S变换的特快速暂态过电压频谱特性及其影响因素分析 被引量:14
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作者 康兵 舒乃秋 +2 位作者 关向雨 侯铁信 卜正良 《中国电机工程学报》 EI CSCD 北大核心 2015年第15期3988-3996,共9页
特快速暂态过电压(very fast transient overvoltage,VFTO)波形具有非平稳性,傅里叶变换无法描述其频率分量随时间变化的局部特征,因此提出了基于广义S变换的VFTO频谱分析。以气体绝缘开关设备(gas insulated switchgear,GIS)试验回路实... 特快速暂态过电压(very fast transient overvoltage,VFTO)波形具有非平稳性,傅里叶变换无法描述其频率分量随时间变化的局部特征,因此提出了基于广义S变换的VFTO频谱分析。以气体绝缘开关设备(gas insulated switchgear,GIS)试验回路实测VFTO典型波形为样本,用广义S变换对样本波形进行频谱分析,给出了各频率分量的幅值–时间曲线;通过对比研究了不同条件下实测波形的幅值–时间曲线,定性分析了击穿序数、分闸/合闸及隔离开关速度、不同位置、GIS回路参数、GIS回路结构等因素对VFTO频谱的影响。结果表明:VFTO频率成份丰富,频率分量的频率越高,其幅值衰减越快、持续时间越短;不同击穿序数的VFTO频率成份相同,各频率分量幅值不同;分闸/合闸及开关速度仅对VFTO各频率分量幅值有所影响,对频率成份无明显作用;不同位置VFTO的高频成份有所不同。 展开更多
关键词 特快速暂态过电压 广义s变换 频谱特性 影响因素 频率成份 幅值–时间曲线
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中国男性全血粘度(5.75s^(-1))正常值与地理因素的关系 被引量:2
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作者 葛淼 张川民 +1 位作者 裘国永 岳大鹏 《陕西师大学报(自然科学版)》 CSCD 1995年第3期88-90,共3页
分析了中国22个地区1483例健康男性全血粘度(5.75S-1)正常值与5项地理因素之间的关系,发现海拔高度是影响男性全血粘度(5.75S-1)正常值最主要的因素,随着海拔高度的增大,男性全血粘度(5.75S-1)正... 分析了中国22个地区1483例健康男性全血粘度(5.75S-1)正常值与5项地理因素之间的关系,发现海拔高度是影响男性全血粘度(5.75S-1)正常值最主要的因素,随着海拔高度的增大,男性全血粘度(5.75S-1)正常值也逐渐增大. 展开更多
关键词 全血粘度 正常值 地理因素 血液流变学
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基于多维度与QGA-LSSVM算法的制造业用电量预测 被引量:1
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作者 王宝 叶彬 +3 位作者 马静 葛斐 奚振乾 杜海红 《电力需求侧管理》 2017年第1期17-21,28,共6页
从制造业内部各微观行业出发,设计了与制造业用电密切相关的产品产量、行业投资和景气指数3个维度共35个指标,按相关性原则选取制造业用电量关键影响指标,并采用QGA-LSSVM算法构建制造业用电量预测模型。安徽省制造业季度累计用电量预... 从制造业内部各微观行业出发,设计了与制造业用电密切相关的产品产量、行业投资和景气指数3个维度共35个指标,按相关性原则选取制造业用电量关键影响指标,并采用QGA-LSSVM算法构建制造业用电量预测模型。安徽省制造业季度累计用电量预测实例结果表明,该方法预测结果准确可信,预测效果明显好于基于制造业经济总量和基于非关键影响因素方法,为电力市场和经济运行分析预测人员提供了一种有效手段。 展开更多
关键词 制造业用电量 多维度 QGA-LssVM 关键影响因素 用电量预测
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G60科创走廊高质量发展的空间关联结构及影响因素
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作者 柳诗易 张俊 +1 位作者 马远军 王泽东 《浙江师范大学学报(自然科学版)》 CAS 2025年第1期68-77,共10页
综合多要素探讨城市空间关联结构对于推进区域高质量一体化发展意义重大.利用修正引力模型和社会网络分析法对G60科创走廊沿线城市高质量发展的空间关联结构及其影响因素进行了分析.结果表明:1)区域整体高质量发展水平不断提升且非均衡... 综合多要素探讨城市空间关联结构对于推进区域高质量一体化发展意义重大.利用修正引力模型和社会网络分析法对G60科创走廊沿线城市高质量发展的空间关联结构及其影响因素进行了分析.结果表明:1)区域整体高质量发展水平不断提升且非均衡性不断减弱,沿线城市高质量发展多维度得分差异明显,在空间分布上,高质量发展水平上海最高且向苏浙皖方向逐渐递减,苏州、杭州是区域高质量发展的次核心城市.2)高质量发展空间关联强度呈现稳定的“东高西低”特征,高值关联有向西北纵深发展的趋势;网络关联数、网络密度波动上升;网络关联度、网络等级度、网络效率先呈现“N”型发展趋势,而后表现出阶梯式的上升过程.3)点出度、中介中心度高值区由多点集聚演变至单极格局;点入度始终呈现以杭州、嘉兴、湖州为高值中心的“核心—边缘”结构,接近中心度空间分异最稳定且城市差异最小,高值区不断向西拓展.4)城市邻接、信息关联、创新合作是影响城市高质量空间关联的重要因素,产业结构相似性、交通基础设施差异的影响不显著.研究结论可为推进G60科创走廊一体化高质量发展提供参考. 展开更多
关键词 高质量发展 G60科创走廊 社会网络分析 空间关联结构 影响因素
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