期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
“非回流式水幕消防电梯井”在建筑设计中的可行性
1
作者 王涛 吴黎明 何威 《福建建筑》 2010年第6期125-126,共2页
消防电梯外侧采用防火分隔水幕系统,用来对空间进行防火分隔,以阻止火势蔓延扩大,起着防火墙的作用。消防电梯内侧采用防护冷却水幕系统,消防水幕衰减火灾热辐射,降低火场温度,提高电梯井的隔热效率,降低电梯金属外壳吸收热量,"非... 消防电梯外侧采用防火分隔水幕系统,用来对空间进行防火分隔,以阻止火势蔓延扩大,起着防火墙的作用。消防电梯内侧采用防护冷却水幕系统,消防水幕衰减火灾热辐射,降低火场温度,提高电梯井的隔热效率,降低电梯金属外壳吸收热量,"非回流"的水体将带走大量的热量,维持电梯轿厢内温度。保护电线电源。 展开更多
关键词 非回流 稀释 火灾热辐射
下载PDF
农村本地非回流劳动力转移研究——一个基于政府与农民的博弈分析
2
作者 吴兰德 《乡镇经济》 2009年第2期102-105,共4页
鉴于我国的制度变迁具有强烈的政府主导色彩,破除农村剩余劳动力转移中的各种制度性障碍,离不开政府的作用。文章从政府的角度将政府和本地非回流劳动力作博弈分析。通过博弈模型以及进一步分析发现,政府和本地非回流劳动力之间的博弈... 鉴于我国的制度变迁具有强烈的政府主导色彩,破除农村剩余劳动力转移中的各种制度性障碍,离不开政府的作用。文章从政府的角度将政府和本地非回流劳动力作博弈分析。通过博弈模型以及进一步分析发现,政府和本地非回流劳动力之间的博弈虽然在同时行动的情况下能实现唯一的纳什均衡,但由于本地转移劳动力回流的成本较小,政府要通过调研来观察本地转移劳动力非回流的概率,通过比较这个概率和计算得出的临界概率RG2-CG3-R'G1+CG2-CG1/RG1+RG2-R'G1-R'G2之间的关系来选择适当的政策搭配,从而促使本地转移劳动力的非回流。 展开更多
关键词 农村剩余劳动力 非回流 转移 博弈
下载PDF
我国外出劳动力省际回流特征及其个体影响效应研究 被引量:2
3
作者 段成荣 郭倩 《西北人口》 CSSCI 北大核心 2024年第2期13-24,共12页
非户籍地省际回流是回流返迁的重要构成,为了更加深入了解劳动力回流特征及其返迁后生活状况的变化,利用2017年全国流动人口监测调查数据(CMDS),探究我国外出劳动力非户籍地省际回流的特征,并使用倾向值得分匹配法(PSM)从经济收入与消... 非户籍地省际回流是回流返迁的重要构成,为了更加深入了解劳动力回流特征及其返迁后生活状况的变化,利用2017年全国流动人口监测调查数据(CMDS),探究我国外出劳动力非户籍地省际回流的特征,并使用倾向值得分匹配法(PSM)从经济收入与消费、家庭团聚、社会保障、社会归属感四个维度对其省际回流的个体影响效应进行评估。主要结果发现:第一,城镇地区是外出劳动力非户籍地省际回流的优先选择,其中县级城市的回流比例相对较低,非省会的地级市回流比例高于省会城市;中西部与东部地区的双向流动模式已初步显现;回流的家庭化特征明显,实现家庭团聚和寻求家庭稳定发展是流动人口的终极目标。第二,与跨省流动相比,省际回流后的劳动力收入水平显著降低,与配偶、子女居住的家庭化流动程度更高,社会医疗保险参与度和社会归属感得到明显的提升。此外,协变量中年龄、受教育年限与省际回流均呈现“倒U型”的关系;已婚、少数民族人口更容易回流;跨省流动时间越长和跨省时子女随迁的劳动力回流可能性越小。总体来看,家庭因素是整个回流决策中重要的影响因素,流动人口政策的制定要更多地考虑流动人口及其家庭成员的发展和福利保障;同时回流地区也要重视回流劳动力对地区发展的重要性,通过创业扶持和产业转型等方式为提升回流劳动力的收入水平和地区的发展创造更多的机会。 展开更多
关键词 省际回流 子女随迁 家庭团聚 原籍地回流
下载PDF
Origin of and therapeutic approach to cardiac syndrome X:Results of the proton pump inhibitor therapy for angina-like lingering pain trial (PITFALL trial) 被引量:1
4
作者 Christoph G Dietrich Susanne Laupichler +4 位作者 Sven Stanzel Ron Winograd Oliver Al-Taie Carsten Gartung Andreas Geier 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第42期6506-6512,共7页
AIM: To investigate the frequency of gastroen-terological diseases in the etiology and the efficacy of proton pump inhibitors (PPIs) in the treatment of cardiac syndrome X (CSX) as a subform of non-cardiac chest pain ... AIM: To investigate the frequency of gastroen-terological diseases in the etiology and the efficacy of proton pump inhibitors (PPIs) in the treatment of cardiac syndrome X (CSX) as a subform of non-cardiac chest pain (NCCP). METHODS: We investigated 114 patients with CSX using symptom questionnaires. A subgroup of these patients were investigated regarding upper gastrointestinal disorders (GIs) and treated with PPI. Patients not willing to participate in investigation and treatment served as control group. RESULTS: Thirty-six patients denied any residual symptoms and were not further evaluated. After informed consent in 27 of the remaining 78 patients, we determined the prevalence of disorders of the upper GI tract and quantifi ed the effect of treatment with pantoprazole. We found a high prevalence of gastroenterological pathologies (26/27 patients, 97%)with gastritis, gastroesophageal reflux disease (GERD) and acid reflux as the most common associated disorders. If treated according to the study protocol, these patients showed a significant improvement in the symptom score. Patients treated by primary care physicians, not according to the study protocol had a minor response to treatment (n = 19, -43%), while patients not treated at all (n = 26) had no improvement of symptoms (-0%). CONCLUSION: Disorders of the upper GI tract are a frequent origin of CSX in a German population and can be treated with pantoprazole if given for a longer period. 展开更多
关键词 Non-cardiac chest pain Gastroesophageal reflux disease Proton pump inhibitor Cardiac syndrome X
下载PDF
Impacts of Climatic Change on River Runoff in Northern Xinjiang of China over Last Fifty Years 被引量:6
5
作者 YANG Yuhui CHEN Yaning +2 位作者 LI Weihong WANG Minzhong SUN Guili 《Chinese Geographical Science》 SCIE CSCD 2010年第3期193-201,共9页
The characteristics of climatic change and fiver runoff, as well as the response of fiver runoff to climatic change in the northern Xinjiang are analyzed on the basis of the hydrological and meteorological data over t... The characteristics of climatic change and fiver runoff, as well as the response of fiver runoff to climatic change in the northern Xinjiang are analyzed on the basis of the hydrological and meteorological data over the last 50 years by the methods of Mann-Kendall nonparametric test and the nonlinear regression model. The results show that: 1) The temperature and the precipitation increased significantly in the whole northern Xinjiang, but the precipitation displayed no obvious change, or even a decreasing trend in the northern mountainous area of the northern Xinjiang. 2) River runoff varied in different regions in the northern Xinjiang. It significantly increased in the northern slope of the Tianshan Mountains and the north of the northern Xinjiang (p = 0.05), while slightly ificreased in the west of the northern Xinjiang. 3) North Atlantic Oscillation (NAO) affects fiver runoff by influencing temperature and precipitation. The NAO and precipitation had apparent significant correlations with the fiver runoff, but the temperature did not in the northern Xinjiang. Since the mid-1990s fiver runoff increase was mainly caused by the increasing temperature in the northern slope of the Tianshan Mountains and the north of the northern Xinjiang. Increased precipitation resulted in increased fiver runoff in the west of the northern Xinjiang. 展开更多
关键词 climatic change river runoff Mann-Kendall test nonlinear regression model NAO northern Xinjiang
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部