全文获取类型
收费全文 | 1560篇 |
免费 | 68篇 |
出版年
2020年 | 13篇 |
2019年 | 25篇 |
2018年 | 35篇 |
2017年 | 24篇 |
2016年 | 44篇 |
2015年 | 33篇 |
2014年 | 36篇 |
2013年 | 489篇 |
2012年 | 66篇 |
2011年 | 59篇 |
2010年 | 63篇 |
2009年 | 64篇 |
2008年 | 42篇 |
2007年 | 51篇 |
2006年 | 60篇 |
2005年 | 19篇 |
2004年 | 26篇 |
2003年 | 27篇 |
2002年 | 23篇 |
2001年 | 32篇 |
2000年 | 22篇 |
1999年 | 15篇 |
1998年 | 20篇 |
1997年 | 11篇 |
1996年 | 14篇 |
1995年 | 17篇 |
1994年 | 13篇 |
1993年 | 15篇 |
1992年 | 9篇 |
1989年 | 11篇 |
1988年 | 9篇 |
1987年 | 9篇 |
1986年 | 8篇 |
1985年 | 10篇 |
1984年 | 13篇 |
1983年 | 15篇 |
1982年 | 12篇 |
1981年 | 8篇 |
1980年 | 15篇 |
1979年 | 14篇 |
1978年 | 11篇 |
1977年 | 8篇 |
1976年 | 10篇 |
1974年 | 13篇 |
1973年 | 5篇 |
1972年 | 6篇 |
1971年 | 8篇 |
1968年 | 10篇 |
1967年 | 6篇 |
1966年 | 7篇 |
排序方式: 共有1628条查询结果,搜索用时 0 毫秒
1.
Jane Duckett 《Development and change》2020,51(2):523-539
This article explores the relationships among neoliberalism, social policy expansion and authoritarian politics in contemporary China. It argues that in the era of neoliberalism, rising new right and authoritarian governments, the Chinese Communist Party has sought to retain power by shifting politically to the right and promoting neoliberal-looking economic policies. These policies have raised average living standards but also increased insecurity for most of the Chinese population, while new social policies have facilitated marketization. Social policy expansion includes minimal cash transfers as well as social old-age and health insurance for hitherto excluded sections of the population. These policies have begun to erode long-standing urban–rural segregation, but they have added new, underfunded, social programmes rather than widening participation in existing ones, re-segregating provision so that urban elites and formal sector workers enjoy much more generous provisions than many people working informally and those without work. These social policies’ most significant dark sides thus include compounded income inequalities and the segmentation and stigmatization of the poorest. Authoritarian controls have enabled the Communist Party to avoid redistributive policies that would undermine its urban support, so that politics in China differ from the right-wing populism of new, anti-establishment authoritarian regimes. 相似文献
2.
3.
4.
5.
6.
Glass finds from the first Bulgarian capital, Pliska, have been analysed by instrumental neutron activation analysis. The analytical data, together with previous results from analysis of glass samples from the second Bulgarian capital, Preslav, were subjected to cluster and discriminant analysis. The local origin of part of the analysed samples was proven and some conclusions about the technology of production were possible. 相似文献
7.
8.
9.
The neutron activation analysis results from 30 glass samples were subjected to cluster analysis. The reliable localization of part of the medieval glass finds from Preslav enabled the evaluation of the variety of the production of a medieval glass workshop (ninth-tenth century), allowing conclusions to be made about the technological level of glass-making in Bulgaria during the Middle Ages. The work proved that NAA followed by cluster analysis is a successful approach to finding the local and chronological features of the investigated glasses. 相似文献
10.
Nearshore water circulation and bar patterns at Coledale, New South Wales, were surveyed daily over thirty-six consecutive days, from 3 November to 8 December 1978, to identify sequences of changes that might occur in response to spring-to-spring tide cycles of fourteen days, changing barometric and wind conditions associated with the passage of anticyclonic weather systems across the coast, and day to day variation in the nearshore wave regime. During the survey the bar patterns tended to vary from transverse bars, through a composite arrangement incorporating longshore and transverse bars, to a longshore bar pattern as the tide changed from its spring to neap tide phase. However, this sequence was too brief to unequivocally establish variations in nearshore bar pattern that might be attributed to the fourteen day, spring-to-spring tide cycle. Nevertheless, morphologic changes occurring in response to wave regime fluctuation at Coledale were broadly in accord with studies from elsewhere by Dolan et al. (1979, 1982), and Clarke and Eliot (1982, 1983) in that bars and rips were systematically distributed along the beach. At Coledale, bars tended to relocate approximately 0.4 and 0.75 of the distance along the beach from its southern end. The preferred bar spacing closely matches hypothetical standing waves trapped between the headlands of the Coledale embayment. Temporally, the nearshore morphology is highly responsive to wave regime changes such that, as primary breaker heights decrease and remain below Hmax=1.0m, the bar pattern changes from longshore through mixed to transverse bar patterns within three to five days. On one occasion the bar pattern switched from a longshore to a transverse bar pattern within twenty-four hours. 相似文献