首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   97篇
  免费   4篇
  2024年   3篇
  2023年   2篇
  2022年   1篇
  2021年   4篇
  2020年   6篇
  2019年   5篇
  2018年   6篇
  2017年   8篇
  2016年   4篇
  2015年   2篇
  2014年   5篇
  2013年   15篇
  2012年   8篇
  2011年   5篇
  2010年   6篇
  2009年   3篇
  2007年   3篇
  2006年   2篇
  2005年   3篇
  2004年   1篇
  2002年   1篇
  2000年   1篇
  1997年   2篇
  1995年   1篇
  1994年   1篇
  1992年   1篇
  1985年   1篇
  1984年   1篇
排序方式: 共有101条查询结果,搜索用时 47 毫秒
31.
Regional economic development competition can be inefficient and destructive because decisions by one governmental unit can impose both externalities on its neighbors. Collaborative networks of multiple stakeholders within and across jurisdictions are an increasingly crucial component of regional economic development. In this article, we focus on the emergence of voluntary and self‐organizing network relationships among local governments to address economic development concerns. The motivations and decisions of local actors play a critical role in shaping and implementing regional collaboration. On a micro level, the collaboration choices are shaped by three primary factors: the transaction costs reflected in the configuration of relationships in which an actor is embedded; the organizational similarities (homophily); and the resource dependencies that shape the local actors' preferences for forming relationships with other specific actors. We utilize an exponential random graph model (ERGM) to test hypotheses regarding the most prominent observed patterns of network relationships within and across different organizational sectors. The results demonstrate that both reciprocity and social clustering structures are preferred by both government and nongovernment organizations. These results suggest that interorganizational collaboration for economic development requires more than simple exchange relationships. Rather, network actors may be better served by participating in a densely clustered network that is capable of maintaining credible commitments to collective solutions.  相似文献   
32.
Using data from the third National Family Health Survey (NFHS-3) on currently married fecund women who have had at least one birth during 2001–2002 and Cox-proportional hazard models, this study examines the less researched association between women's autonomy and birth-to-conception intervals in India. It also examines whether women's autonomy mediates or moderates the relationship between education and birth-to-conception interval. Our results indicate that after adjusting for demographic and socioeconomic factors, women's autonomy was a significant predictor of birth-to-conception intervals, with higher autonomy positively associated with larger birth-to-conception intervals. Education of women was also independently associated with longer birth-to-conception intervals. However, this study did not provide any support to the general perception that women's autonomy mediates the association between women's education and birth-to-conception interval. Women's autonomy rather than being a mediator acted as a moderator in this association. Policy measures to increase the spacing between births should emphasise not only improving the education of women but also their autonomy.  相似文献   
33.
陈小晔  孙斌栋 《人文地理》2017,32(4):95-101
制造业是城市经济的重要组成部分和推动城市空间格局演化的重要驱动力。本文采用上海1996年、2004年、2008年制造业企业分街道就业数据,分析上海都市区制造业的空间格局演化,采用计量模型探究了制造业就业分布的主要影响因素。研究表明,上海都市区制造业就业空间格局已经基本实现了郊区化,并涌现出了稳定的制造业次中心;区位、交通、地价和政策因素对制造业就业格局的形成有着显著作用,而且这些因素的作用存在着显著的行业间差异性。为实现制造业的合理布局和城市空间结构优化,政府应该尊重市场规律和不同产业的特点,为不同产业选址布局提供相应的空间供给和基础设施。  相似文献   
34.
While the land use-street network nexus is well acknowledged, evidence for the one-way impacts of land-use patterns on street accessibility is still inadequate. The measurements of land-use patterns and street accessibility lack systematic knowledge. Their empirical correlations also lack geographical variability, constraining site-specific land-use practices. Therefore, this study overcame the aforementioned limitations by examining the two-level spatial models to formulate accessibility-oriented land plans, using a well-developed Chinese city as an example. Firstly, two landscape metrics—Euclidean Nearest-Neighbor Distance (ENN) and Similarity Index (SIMI)—were used to quantify the intra- and inter-land-use configurations, respectively. Both city-level and local accessibility were measured using spatial design network analysis. Performing both ordinary least squares (OLS) and geographically weighted regression (GWR) models, results identified the statistically significant effects of inter-land-use patterns on two-level street accessibility. An exception was that land-use configurations within residential and industrial regions were irrelevant to street accessibility. We also found GWR was a better-fitting model than OLS when estimating locally-varied accessibility, suggesting hierarchical multiscale land-use planning. Overall, locally heterogeneous evidence in this study can substantialize land use-street network interactions and support the decision-making and implementation of place-specific accessibility-oriented land use.  相似文献   
35.
张紫琼  Rob Law  刘挺 《旅游科学》2012,26(5):76-84
本文基于对香港居民的大规模电话调查,采用最优尺度回归模型,探讨出游动机和人口统计特征如何影响香港居民对旅游重要性的感知以及人口统计特征如何影响香港居民的出游动机。回归结果显示:休闲放松和发掘新事物是影响旅游重要性感知的主要旅游动机,家庭月收入和受教育程度是影响旅游重要性感知的主要人口统计特征;与亲朋好友聚会、社交、休闲放松、逃脱日常事务和发掘新事物动机最相关的人口统计特征分别是家庭月收入、年龄、家庭月收入、年龄和受教育程度,而性别对香港居民的各种出游动机无显著影响。  相似文献   
36.
旅游地生命周期的数学模型比较研究   总被引:1,自引:0,他引:1  
张骁鸣  薛丹 《旅游科学》2009,23(4):6-12
本文分析了Logistic模型和Gompertz模型用于拟合旅游地生命周期曲线的内部数理逻辑,并通过收集中国部分省级行政区、重要旅游城市、著名旅游景区近30年的入境旅游人数统计资料,比较了上述两种数学模型对于拟合中国不同尺度旅游地演化过程的适用性,最后辨证地说明了旅游地生命周期假说的学术价值。  相似文献   
37.
In recent years, the concept of national identity has recaptured the imagination of public opinion research and with it individuals' conceptions of what it takes to be a “true” member of their nation. This investigation aims to add to the explanation of varying conceptions of nationhood by scrutinising their personality-based foundations. It provides the first systematic analysis of a yet unstudied link between the Big Five personality traits and two ideal-typical conceptions of nationhood: civic and ethnic national identity. Using 18 samples from six European countries (Germany, France, Italy, Switzerland, Spain, and the United Kingdom), each containing around 1000 individuals, we uncover psychological underpinnings of attitudes towards national membership, revealing several consistent trait patterns. We find a negative relationship between openness to experience and an ethnic national identity, while conscientiousness associates positively with the civic ideal type of national identity content. The findings presented extend current understandings of how people conceptualise national belonging and provide evidence that distinct conceptions of nationhood are related to different dispositional foundations.  相似文献   
38.
This paper analyzes the impact of broadband infrastructure, along with a range of other local characteristics such as motorways and other infrastructure, availability of human capital, and access to third‐level educational facilities, on the location of new business establishments. The sample period spans the introduction and recent history of broadband in Ireland. The results indicate that the availability of broadband infrastructure is a significant determinant, but its effects may be mediated by the presence of sufficiently high human capital in an area.  相似文献   
39.
Much can be learned about the religious ideology and mortuary patterns as well as the demographic and health profiles of a population from archaeological human fetal skeletons. Fetal skeletons are rare, however, largely due to poor preservation and recovery, misidentification, or non‐inclusion in general burial populations. We present an analysis of 82 fetal/perinatal skeletons recovered from Kellis 2, a Roman Period cemetery dated to the third and fourth centuries AD, located in the Dakhleh Oasis, Egypt. Most of the fetal remains were individually wrapped in linen and all were buried among the general cemetery population in a supine, east–west orientation with the head facing to the west. Gestational age estimates are calculated from diaphysis lengths using published regression and Bayesian methods. The overall similarity between the fetal age distributions calculated from the regression and Bayesian methods suggests that the correlation between diaphysis length and gestational age is typically strong enough to avoid the ‘regression’ problem of having the age structure of reference samples adversely affecting the age distribution of target samples. The inherent bias of the regression methods, however, is primarily reflected in the gestational age categories between 36 and 42 weeks corresponding with the expected increase in growth variation during the late third trimester. The results suggest that the fetal age distribution at Kellis 2 does not differ from the natural expected mortality distribution. Therefore, practices such as infanticide can be ruled out as having a significant effect on the observed mortality distribution. Moreover, the Kellis 2 sample is well represented in each gestational age category, suggesting that all premature stillbirths and neonatal deaths received similar burial rites. The age distribution of the Kellis 2 fetal remains suggests that emerging Christian concepts, such as the ‘soul’ and the ‘afterlife’, were being applied to everyone including fetuses of all gestational ages. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
40.
During the Middle Ages and the early modern period the cultivation of the chestnut tree became dominant in various mountain regions in Western Europe. Large numbers of giant chestnut trees have been reported throughout the continent that may be considered the living heritage of this period. In this paper we used a systematic inventory of giant chestnut trees in southern Switzerland for reconstructing the eco-cultural niche related to the long-term cultivation and conservation of such remarkable trees. To this purpose we implemented a retrospective logistic modelling approach with the presence of giant chestnuts as response variable compared with 65 environmental and cultural predictors. We performed different logistic regression analyses using untransformed and transformed variables. Out of the 42 models produced, we finally selected two models, on the basis of their parsimony and accuracy. Many of the selected predictors, such as distance from the lake, abundance of small livestock or number of secondary settlements, reveal that former local and regional socio-economic conditions and environmental constraints have considerable explanatory power. The approach allows us to detect several aspects of the targeted eco-cultural niche that may have acted in the distant past to support the development of the traditional fruit chestnut culture, as well as more recently, to preserve the giant chestnut tree population during the disruption phase of this culture. Most results are in line with the historical documentation, while others go beyond the dictates of written history and reveal interesting traits of the past economic and cultural systems.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号