绿色出行引导效果受外部信息及出行者选择偏好影响,需要考虑出行者潜在属性类别的异质性。自我呈现表现为人们通过控制与自己有关的信息来影响他人对自己的印象,体现了信息与选择偏好的交互作用。为定量分析出行者自我呈现意识和环保意...绿色出行引导效果受外部信息及出行者选择偏好影响,需要考虑出行者潜在属性类别的异质性。自我呈现表现为人们通过控制与自己有关的信息来影响他人对自己的印象,体现了信息与选择偏好的交互作用。为定量分析出行者自我呈现意识和环保意识对出行方式选择行为的影响,本文通过问卷调查收集到1382份有效样本,利用潜在类别模型(Latent Class Model,LCM)将出行者划分为高自我呈现组(18.23%)、中自我呈现组(20.26%)和低自我呈现组(61.51%)。离散选择模型的结果表明,出行者在进行方式选择时更关注出行时间和出行方式自身的特性,若不考虑方式特性,会高估出行费用对高自我呈现组的影响。高自我呈现组仅在短距离出行中对公共交通有强烈偏好,对于6~10 km的出行,选择私家车倾向明显。中短距离的出行中,低自我呈现组对骑行的偏好价值可以在一定程度上抵消过长出行时间带来的负效用。构建考虑出行者异质性的方式选择模型,可为政府和相关部门制定更协调、有针对性的交通调控政策及公共交通运营策略提供理论依据。展开更多
The innovation and entrepreneurship of college students is a new type of education and research model that takes cultivating students’innovative spirit and ability as the primary value orientation and takes the parti...The innovation and entrepreneurship of college students is a new type of education and research model that takes cultivating students’innovative spirit and ability as the primary value orientation and takes the particular group of college students and graduated college students as the central part of entrepreneurship.In order to comply with the national innovation-driven development strategy,colleges and universities also cultivate innovative talents in line with the talent market through innovation and entrepreneurship training.Under the vital innovation and entrepreneurship atmosphere in the country and universities,we fully understand the regional situation of Nanning and Wuming in Guangxi Province and put forward the“Wuming Cloud Project”.The Wuming Cloud Project aims to create a comprehensive international ethnic and cultural park that integrates Southeast Asian flavours,traditional architecture,and ethnic cultures and attracts tourists through diversified cultural experiences,convenient transportation services,and a variety of promotional tools,which will not only promote the tourism and economic development of Wuming but also bring tourists an immersive experience of Southeast Asian ethnic cultures.The Cultural Park is significant to Nanning in absorbing resources from various parties,displaying particular cultures,and promoting tourism and economic development.展开更多
基金Project(2022YFC2903901)supported by the National Key R&D Project of ChinaProjects(52274249,52334003)supported by the National Natural Science Foundation of China+1 种基金Project(2020-24)supported by the Key Science and Technology Project of Guangxi Transportation Industry,ChinaProject(2023ZZTS0516)supported by the Fundamental Research Funds for the Central Universities,China。
文摘绿色出行引导效果受外部信息及出行者选择偏好影响,需要考虑出行者潜在属性类别的异质性。自我呈现表现为人们通过控制与自己有关的信息来影响他人对自己的印象,体现了信息与选择偏好的交互作用。为定量分析出行者自我呈现意识和环保意识对出行方式选择行为的影响,本文通过问卷调查收集到1382份有效样本,利用潜在类别模型(Latent Class Model,LCM)将出行者划分为高自我呈现组(18.23%)、中自我呈现组(20.26%)和低自我呈现组(61.51%)。离散选择模型的结果表明,出行者在进行方式选择时更关注出行时间和出行方式自身的特性,若不考虑方式特性,会高估出行费用对高自我呈现组的影响。高自我呈现组仅在短距离出行中对公共交通有强烈偏好,对于6~10 km的出行,选择私家车倾向明显。中短距离的出行中,低自我呈现组对骑行的偏好价值可以在一定程度上抵消过长出行时间带来的负效用。构建考虑出行者异质性的方式选择模型,可为政府和相关部门制定更协调、有针对性的交通调控政策及公共交通运营策略提供理论依据。
基金Project(2022YFC2903901) supported by the National Key R&D Project of ChinaProjects(52104111, 52274249) supported by the National Natural Science Foundation of China+3 种基金Project(2021JJ30819) supported by the Natural Science Foundation of Hunan Province,ChinaProject(kfkt2023-01) supported by the Open Fund of State Key Laboratory of Safety Technology of Metal Mines,ChinaProject(2023TJ-X80) supported by the Xiaohe Sci-Tech Talents Special Funding under Hunan Provincial Sci-Tech Talents Sponsorship Program,ChinaProject(2023ZZTS0516) supported by the Fundamental Research Funds for the Central Universities,China。
文摘The innovation and entrepreneurship of college students is a new type of education and research model that takes cultivating students’innovative spirit and ability as the primary value orientation and takes the particular group of college students and graduated college students as the central part of entrepreneurship.In order to comply with the national innovation-driven development strategy,colleges and universities also cultivate innovative talents in line with the talent market through innovation and entrepreneurship training.Under the vital innovation and entrepreneurship atmosphere in the country and universities,we fully understand the regional situation of Nanning and Wuming in Guangxi Province and put forward the“Wuming Cloud Project”.The Wuming Cloud Project aims to create a comprehensive international ethnic and cultural park that integrates Southeast Asian flavours,traditional architecture,and ethnic cultures and attracts tourists through diversified cultural experiences,convenient transportation services,and a variety of promotional tools,which will not only promote the tourism and economic development of Wuming but also bring tourists an immersive experience of Southeast Asian ethnic cultures.The Cultural Park is significant to Nanning in absorbing resources from various parties,displaying particular cultures,and promoting tourism and economic development.
文摘目的:综合探究乌海市成年居民身体活动(physical activity,PA)、静坐行为(sedentary behavior,SB)的时间分布与肥胖的关系。方法:采用多阶段整群随机抽样,以乌海市18~79岁常住居民为研究对象进行横断面调查。通过问卷调查、体格检查收集研究对象的社会人口学信息、PA和SB时间、饮食摄入、慢性病控制情况、身高、体质量、腰围及其他协变量。成分线性回归分析PA、SB的时间分布与肥胖的关系,以及时间重新分配后对肥胖的影响。结果:成分线性回归结果显示,控制混杂因素后,职业与非职业人群PA、SB的时间占比与体重指数(body mass index,BMI)、腰围身高比(waist to height ratio,WHtR)的负自然对数(-lnWHtR)的关系均有统计学意义(P均<0.001)。职业人群中,中高强度PA的时间占比与-lnWHtR呈负相关(β=-0.008,P=0.022),而SB时间占比与BMI、-lnWHtR呈正相关(β=0.117,P=0.003;β=0.007,P=0.005)。非职业人群中,中高强度PA的时间占比与BMI呈负相关(β=-0.079,P=0.041)。职业与非职业人群中,低强度PA的时间占比与BMI、-lnWHtR关系无统计学意义。时间重新分配结果显示,10 min的中高强度PA代替低强度PA和SB对肥胖的影响更大。结论:在运动指南的制定以及健康管理的实践中,综合考虑不同人群PA、SB的时间分布对健康的影响,而非简单地增减PA或SB的绝对时间,将取得更长远的健康效果。
