全文获取类型
收费全文 | 325篇 |
免费 | 13篇 |
专业分类
338篇 |
出版年
2024年 | 2篇 |
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 21篇 |
2018年 | 19篇 |
2017年 | 16篇 |
2016年 | 23篇 |
2015年 | 14篇 |
2014年 | 17篇 |
2013年 | 75篇 |
2012年 | 12篇 |
2011年 | 9篇 |
2010年 | 9篇 |
2009年 | 13篇 |
2008年 | 10篇 |
2007年 | 5篇 |
2006年 | 10篇 |
2005年 | 6篇 |
2004年 | 5篇 |
2003年 | 1篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 4篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1980年 | 3篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1971年 | 1篇 |
1949年 | 3篇 |
1948年 | 1篇 |
排序方式: 共有338条查询结果,搜索用时 15 毫秒
81.
Benjamin A. Goldman 《对极》1996,28(2):122-141
This article examines the potential future of the U.S. environmental justice movement in a time of economic uncertainty, increasing inequality, and an ascendant white right. It traces the origins of “whiteness” as a historically contingent concept within American history and its relationship to current politics in general and the politics of the environment in particular. It reviews the emergence of research, public concern, and action over the linkage between environmental pollution, race, and class. After offering a critique of the contrary empirical findings of academic researchers, the article identifies two roads for future work in the field, and their potential pitfalls. 相似文献
82.
83.
Peter Ho 《Development and change》2001,32(5):893-921
This article argues that the specific features and dynamics of China’s environmentalism can be attributed to two factors: the ‘greening’ of the Chinese state at the time when environmentalism emerged, and the alternating politics of toleration and strict control of social organizations. As a result, environmentalism has developed in a gradual way, encompassing the various forms of ‘green’ NGOs that we see in the West and the ex–socialist states of Eastern and Central Europe. Yet, on the other hand, environmentalism was also robbed of the opportunity, as well as the immediate urgency, to openly confront the government. This is where it deviates from environmentalism in the West and the former Eastern–bloc countries. 相似文献
84.
Peter Ho 《Development and change》2006,37(1):3-28
This edited volume argues that China's development poses the greatest ever environmental challenge for the modern world in terms of speed, size and scarcity. The volume is organized around the greening of the Chinese state and society: can the inclusion of sustainable development principles into governance, management and daily practices by social actors lead to sustainable development per se? This introduction sketches the different scholarly camps around greening and sustainable development, ranging from sceptical to radical environmentalism. The contributions demonstrate that China is showing clear signs of greening as new institutions and regulations are created, environmental awareness increases and green technologies are implemented. However, the question remains whether this is sufficient to effectuate long‐term sustainable development. The key factors here are the sheer speed of China's economic growth, the size of its population, and the relative scarcity of its natural and mineral resources. Chinese development presents compelling reasons for rethinking the viability of greening. It is necessary to move beyond both alarmist visions of an environmental doomsday, and optimistic notions that incremental changes in technology, institutions and lifestyles are sufficient for sustainability. It might be more fruitful — and not only for China — to consider ‘precautionary’ rather than ‘absolute’ limits to growth. 相似文献
85.
Although China is one of the world's largest producers and consumers of genetically modified (GM) crops and derived food products, little is known about the level of Chinese consumer awareness, understanding and acceptance of GM food. Initially, China pursued relatively aggressive policies for biotechnology development, but in recent years, the central government has become more sensitive to the potential environmental risks of transgenic food crops. To protect domestic biotech industries, the state plays a critical role in the politics of biotechnology, and does not allow GM food to become a prominent public issue. This contribution reports on a survey of 1,000 urban respondents. It demonstrates that most consumers lack the most basic understanding of biotechnology and its potential risks. The majority of the respondents (60 per cent) were either unwilling to consume GM food or were neutral about the idea, but when given neutrally‐worded information about potential GM food allergenicity, the willingness to buy dropped sharply. This might point to future scenarios of consumer resistance against GM food as has happened in European Union member states. This effect demonstrates the malleability of the Chinese consumer in a context of limited understanding and inadequate access to information. 相似文献
86.
87.
Benjamin Johnson 《History Compass》2006,4(1):186-192
Scholars of North American borders have raised fundamental questions about the relationship between the discipline of history and the nation‐state. Integrating the histories of the U.S.‐Canadian and U.S.‐Mexican borders while paying more attention to the limits of national power will allow them to write accounts of modern state‐making that address questions important to all historians of the modern world. 相似文献
88.
Benjamin Slingo 《History of European Ideas》2015,41(4):507-526
SummaryMarc'antonio de Dominis is well known to historians as a figure in the political and religious culture of early modern Britain and Europe. This article contends that he was also a major theorist of civil power: his critique of Catholic scholastic political thought is compelling and his account of divine right kingship sheds light on conceptual problems that troubled a range of early modern thinkers. De Dominis dismantled the scholastic theory of political power on its own terms, insisting that Almain, Bellarmine, Suárez and others could not distinguish, as they sought to, between the potestas politica in general and the rule of particular princes. By this insight de Dominis could vindicate royal authority against the deposing pretensions of the Pope, the main objective of James I's supporters during the Allegiance Controversy, but his own positive account of how to think about power ran into theoretical trouble which he evidently perceived himself. If the potestas politica cannot be abstracted from a specific regime, and if the prince's absolute sovereignty depends on this fact, can politics be understood only at the level of the particular and contingent? The article closes by setting Thomas Hobbes—well versed in Jacobean polemic—in the context of this question. 相似文献
89.
Migration for domestic work has become the subject of intense debate among international human rights organisations and policy makers concerned with the welfare of workers who are predominantly women from poor and historically disadvantaged communities. This paper is a review of the literature on South‐South migration for domestic work, undertaken to assess the evidence base that underpins this debate. It shows that there is little discussion of the reasons for such migration and the impact that it has on households at origin. There is an assumption that domestic workers are driven by poverty into occupations that entrench poverty. The literature is dominated by papers focusing on the shortcomings of legal frameworks for regulating working conditions and recruitment practices, resulting in extremely exploitative conditions of employment. Although a few papers discuss worker agency, these are clearly not influencing policy debates, which continue to treat migrant domestic workers as victims. There is a dearth of research on the impacts of migration on households at origin; a significant gap in the literature given that migration is often a household strategy intended to access more remunerative employment and remit money home. 相似文献
90.
Tao Cheng Jiaqiu Wang James Haworth Benjamin Heydecker Andy Chow 《Geographical analysis》2014,46(1):75-97
Various statistical model specifications for describing spatiotemporal processes have been proposed over the years, including the space–time autoregressive integrated moving average (STARIMA) and its various extensions. These model specifications assume that the correlation in data can be adequately described by parameters that are globally fixed spatially and/or temporally. They are inadequate for cases in which the correlations among data are dynamic and heterogeneous, such as network data. The aim of this article is to describe autocorrelation in network data with a dynamic spatial weight matrix and a localized STARIMA model that captures the autocorrelation locally (heterogeneity) and dynamically (nonstationarity). The specification is tested with traffic data collected for central London. The result shows that the performance of estimation and prediction is improved compared with standard STARIMA models that are widely used for space–time modeling. En los últimos años, se han propuesto diversas especificaciones de modelado estadístico para describir procesos espacio‐temporales. Esto incluye el modelo espacio‐temporal autorregresivo integrado de media móvil (STARIMA) y sus varios derivados. Estas especificaciones de modelo asumen que la correlación de los datos puede ser adecuadamente descrita por parámetros que se fijan a nivel global en el espacio y/o tiempo. Dichos parámetros son inadecuados para los casos en los que las correlaciones entre los datos son dinámicas y heterogéneas, como en el contexto de los datos de la red. El objetivo de este artículo es describir la autocorrelación en los datos de red con una matriz de ponderación espacial dinámica y un modelo STARIMA localizado (LSTARIMA) que captura la autocorrelación local (heterogeneidad) de forma dinámica (no estacionariedad). La especificación del modelo es evaluada con datos de tráfico recolectados en el centro de Londres. Los resultados demuestran que los rendimientos de estimación y predicción mejoran con el método propuesto en comparación con los modelos STARIMA estándar que son ampliamente utilizados para el modelado de espacio‐temporal. 通过设定多种统计模型来描述地理时空过程已提出多年,包括时空自回归移动平均(STARIMA)及其变形。此类模型通过假设数据相关性可由在时间域或者空间域上全局不变的参数加以充分描述。因此,上述模型不适用于具有动态或异质相关性的数据,如网络数据。本文试图采用一个动态空间权重矩阵与局部时空自回归移动平均(LSTARIMA)模型来描述数据的自相关程度,以此捕捉局域自相关(异质性)和动态自相关(非平稳性)。以伦敦市中心的交通数据作为模型的实证案例的测试结果显示,相对于广泛应用于时空过程分析的标准STARIMA模型,本文的模型在参数估计和预测性能上均有提升。 相似文献