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21.
河南省县域贫困程度及影响因素分析   总被引:1,自引:0,他引:1  
贫困地区的地理识别,是区域扶贫政策精准、有效实施的前提。以经济指标衡量河南省县域相对贫困程度,并借助有序logit回归模型分析社会经济发展、自然条件、区位交通、历史基础4类变量16个影响因子对区域贫困状况的影响程度。分析发现,河南省县域综合经济发展水平存在较大的区域差异,经济发展水平相对较低的县域多分布在豫西和豫东南,且区域内存在部分潜在贫困县。回归分析结果表明,工业化水平、居民储蓄水平、气温、湿度、到最近城市的距离、国道道路密度、期初经济水平7个因子对县域贫困程度影响显著。地区扶贫政策实施过程中,在重视经济因素的减贫效应时,也应重视自然因素的致贫效应,政府主导,因地制宜,逐步实现区域协调发展。  相似文献   
22.
本文以华盛顿-巴尔的摩地区200年都市化发展史为例,通过Mapinf07.0得到两城市内、外接圆半径值。以Logistic模型为基础计算出其半径增长速率并进行对比分析。研究表明,巴尔的摩和华盛顿城市化区的扩展表现为核心与廊道的共同增长,但二者的增长速率不具有同步增长过程;1962年前华盛顿城市化区的空间形态要优于巴尔的摩,随后则相反。传统的双核廊道结构空间增长研究多以整体为对泉研究其增长过程,本文的创新特色在于通过对比分析两个城市内、外接圆半径的变化,来揭示双核廊道结构空间增长的特殊规律。  相似文献   
23.
Thanks to pioneering work within anthropology, students of international migration acknowledge that most immigrants do not sever their ties with the homeland, but rather maintain them through a variety of cross‐border relationships. While scholarly work has proliferated, since the early 1990s, over the transnational economic and political activities of immigrants, to date, only few analysts have examined the religious practices with which immigrants sustain memberships in multiple locations. In addition, most available studies on transnational migration has dwelled on qualitative methods, such as participant observation, focus groups discussions and in‐depth interviews with a handful of informants, with little or no inclination towards the quantitative measurement of key variables implicated in the process. The prevalence of ethnographic methods in this area of research has, quite understandably, engendered charges of exaggeration, given the tendency of such techniques ‘to sample on the dependent variable’, to borrow the phrase of Alejandro Portes. Using data collected from a survey among Ghanaian immigrant congregations in Toronto, this study seeks to statistically predict the propensity to engage in transnational religious practices by way of a binary logistic regression analysis. In addition, the study examines how the transnational religious activities of the sampled immigrants relate to, overlap with, and differ from other kinds of transnational practices they pursue.  相似文献   
24.
We consider the history of woodland clearing in central western New South Wales, Australia, which has led to the present highly cleared and fragmented landscape. A combined approach is used examining available historical land‐use data and using regression analysis to relate the pattern of cleared and wooded areas in the recent landscape to environmental variables, taking into account the contagious nature of clearing. We also ask whether it would be possible to apply a simple simulation modelling approach to reconstruct a credible historical sequence of clearing in the study area. The historical data indicate that annual clearing rates have varied substantially in the study area and selective tree removal (ringbarking and thinning) has been common. These findings make it unlikely that a simple simulation approach would replicate the spatial and temporal sequence of woodland loss. Our regression results show that clearing patterns can be related to environmental variables, particularly annual rainfall and estimated pre‐European vegetation type, but that patterns are dominated by contagion.  相似文献   
25.
The accumulated published database of stable lead isotope analyses of ore and slag specimens taken from Anatolian mining sites that parallel the Black Sea coast has been augmented with 22 additional analyses of such specimens carried out at the National Institute of Standards and Technology. Multivariate statistical analysis has been used to divide this composite database into five separate ore source groups. Evidence that most of these ore sources were exploited for the production of metal artefacts during the Bronze Age and Phrygian Period has been obtained by statistically comparing to them the isotope ratios of 184 analysed artefacts from nine archaeological sites situated within a few hundred kilometres of these mining sites. Also, Appendix B contains 36 new isotope analyses of ore specimens from Central Taurus mining sites that are compatible with and augment the four Central Taurus Ore Source Groups defined in Yener et al. (1991).  相似文献   
26.
Over 200 sherds of samian and colour-coated pottery of late 2nd or early 3rd century date have been analysed by inductively coupled plasma (ICP) emission spectrometry. Most of this material was excavated at Colchester, England; the remainder is related East Gaulish material. Some clay samples were also analysed. The material divides, after multivariate statistical analysis, into 11 clusters. These accord well with known archaeological evidence and suggest assignments of origin where these are uncertain. In particular, the archaeological evidence for a link between Colchester and the Sinzig potters is supported.  相似文献   
27.
The new Siberia     
This paper assesses relationships between Scottish ice climbing and daily weather conditions between 1961 and 1990. Synoptic air flow and instrumental climate data from Braemar and Fort Augustus were analysed in relation to first ascents of ice climbs in the Cairngorms, and on Ben Nevis and Creag Meagaidh. Lagged weather variables were calculated and stepwise logistic regression was used to estimate optimum models for both areas. Significant variables are anticyclonicity, low minimum air temperature and northerly or easterly airflow (Cairngorms, P = 0.0006); and northerly or easterly airflow, low minimum air temperature and low precipitation (Ben Nevis and Creag Meagaidh, P < 0.0001). A five‐day cold spell is optimum for Ben Nevis and Creag Meagaidh. A week with relatively little precipitation is beneficial in both areas. Air flow direction is more influential than vorticity, the optimum predictors of ice conditions using synoptic data alone are a persistent easterly component (beneficial), and a persistent southerly and westerly component (detrimental), P < 0.0001.  相似文献   
28.
Located in the historical center of Catania, Italy, in the Civita district, the Bonajuto Chapel is one of the oldest and best-conserved buildings of the city, which has survived the numerous earthquakes that struck eastern Sicily during the medieval and the modern ages, such as those particularly devastating in 1169 and 1693. However, both the date of this small monument, as well as its original use, still remain uncertain, as literary and documentary evidence are scarce and fragmentary. Most historians, analyzing prevalently the stylistic and constructive aspects, interpreted the chapel as a place of worship and assigned its construction to a rather long period of the early Middle Ages, from the 5th or 6th centuries ad to the 8th or 9th centuries ad—the phase during which the island was under the Byzantine domination. The excavations carried out in 1930 to 1939 and the last restoration works (in 2003) have not provided explicit chronological data. Its age determination is considered essential for a better knowledge of the real influence of this domination on the architecture of the Island. Therefore, a multidisciplinary and accurate analysis of the building using the existing bibliography has been carried out also in order to understand the functional and morphological transformations of the chapel during its long life. The thermoluminescence absolute dating methodology applied to some brickwork elements of the construction, has placed the monument chronology in a period of time that is notably shorter than that previously noted here. These new data, with the study of the architectural structure, have made a significant step forward in the knowledge of the chapel history.  相似文献   
29.
This paper focuses in the morphometric analyses of Lama guanicoe remains recovered from the hunter–gatherer archaeological site Alero Deodoro Roca, located at Sierras Pampeanas Australes region (Córdoba Argentina), an area that has little information on the body‐size variability of these artiodactyls. Because of the sparse osteometric data in the region, we focused on determining inter‐intraspecific differentiation of wild camelids through corroborated osteometric techniques and multivariate statistical analyses of proximal phalanges. Our results showed a clear interspecific differentiation between modern vicuñas and archaeological specimens. We could also distinguish at least three guanaco size groups (small, medium and large) with the archaeological remains from the late Holocene (3000–3600 bp ) of the site, presenting medium‐size characteristics. Finally this paper aims at establishing a first approach in the characterisation of guanaco body size in the mountainous region of Córdoba. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
30.
China is a country with a unique history of gender traditions and birth-control regulations. Traditional gender role attitudes, closely related to son preference, exert entrenched influence on the fertility intentions and behaviours of women in China. In recent years, despite the fact that employment characteristics and educational attainment of women have caught up with men, China has witnessed a resurgence of patriarchal Confucian tradition. Gender relations in the private sphere are increasingly regulated by traditional gender norms. Considering the declining fertility in China and recent fertility policy adjustments, this paper analyses the varying effects of gender role attitudes on fertility intentions of women under different birth control policies, utilising data from 1,422 questionnaires conducted in 2015 in the Shaanxi Province in northwestern China and using the Multinomial Logistic Model. Our findings imply that the relationship between women’s gender role attitudes and fertility intention differs between women affected by different birth control policies. We find that among married women with one child who are restricted to one child, the more egalitarian the gender role attitude, the more likely they intend to have a second child. Among married women who have had one child and are allowed to have two children, the more egalitarian the gender role attitude, the less likely they intend to have a second child. The results also indicate that traditional gender role attitudes and norms still play an important role in Chinese women’s fertility intentions.  相似文献   
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