全文获取类型
收费全文 | 1867篇 |
免费 | 25篇 |
国内免费 | 2篇 |
专业分类
教育 | 1013篇 |
科学研究 | 625篇 |
各国文化 | 20篇 |
体育 | 70篇 |
文化理论 | 22篇 |
信息传播 | 144篇 |
出版年
2020年 | 15篇 |
2019年 | 30篇 |
2018年 | 39篇 |
2017年 | 37篇 |
2016年 | 26篇 |
2015年 | 21篇 |
2014年 | 32篇 |
2013年 | 352篇 |
2012年 | 21篇 |
2011年 | 28篇 |
2010年 | 22篇 |
2009年 | 30篇 |
2008年 | 28篇 |
2007年 | 23篇 |
2006年 | 21篇 |
2005年 | 30篇 |
2004年 | 26篇 |
2003年 | 25篇 |
2002年 | 23篇 |
2001年 | 17篇 |
2000年 | 15篇 |
1997年 | 16篇 |
1996年 | 13篇 |
1995年 | 13篇 |
1994年 | 20篇 |
1993年 | 25篇 |
1990年 | 18篇 |
1986年 | 15篇 |
1985年 | 19篇 |
1983年 | 20篇 |
1982年 | 16篇 |
1981年 | 22篇 |
1980年 | 26篇 |
1979年 | 17篇 |
1978年 | 24篇 |
1976年 | 13篇 |
1948年 | 15篇 |
1930年 | 20篇 |
1929年 | 28篇 |
1928年 | 33篇 |
1927年 | 32篇 |
1926年 | 30篇 |
1925年 | 52篇 |
1924年 | 33篇 |
1923年 | 34篇 |
1921年 | 16篇 |
1920年 | 28篇 |
1919年 | 13篇 |
1918年 | 13篇 |
1868年 | 15篇 |
排序方式: 共有1894条查询结果,搜索用时 15 毫秒
101.
John B. White Dana Burr Bradley Thomas Nicholson John Bonaguro Kathleen Abrahamson 《Educational gerontology》2015,41(7):519-526
The aging of the Baby Boom presents long-term care with many new challenges. Among these are the historically high levels of drug use by this cohort. This study surveyed administrators of licensed skilled nursing facilities in the Commonwealth of Kentucky regarding their perception of current drug use by residents, facility policies and procedures currently in place regarding illicit drug use, and their attitudes toward use of illicit drugs by residents. The results of interviews with 40 administrators or their designees revealed that they have experienced little problem with use or abuse of illegal drugs by residents. Fewer than one-third of the facilities had formal policies in place regarding illegal drug use. Only 10% had any experience with requests for medical marijuana, but almost one in five had a policy on the matter and nearly one-third stated they would support medical marijuana use by some of their residents if the matter arose. These authors recommend the following: (a) that the issue of illicit drug use needs to be addressed now before the situation becomes critical, (b) that administrators and staff need to be educated about recreational drug use and appropriate responses to drug abuse, (c) that screening instruments for drug abuse in this population should be developed and implemented, and (d) that policies regarding medical marijuana need to be adopted by all such facilities. 相似文献
102.
Sarah B. Rosenbach S. Henry Sherwood V. Paul Poteat Hirokazu Yoshikawa Jerel P. Calzo 《Psychology in the schools》2022,59(1):152-180
In a time of unprecedented polarization in the United States, particularly concerning immigration, schools are uniquely positioned to help students understand the consequences of drastic policy changes. Beyond formal settings such as social studies classes, extracurricular activities may be important for fostering discussions about sociohistorical and policy issues. Such discussions could serve to empower youth from marginalized populations and raise their critical consciousness. Yet the potential outcomes of discussions in these extracurricular settings have not been studied in depth. Using data collected in school-based Gender-and-Sexuality-Alliances (GSAs) throughout Massachusetts during the periods leading up to and following the 2016 US Presidential election, we examined whether discussions of immigration issues in GSAs were associated with greater empowerment and critical consciousness among 580 youth (M Age = 15.59, range = 10–20 years). Multilevel structural equation models showed that the frequency with which youth discussed immigration, relative to their fellow members, was positively associated with residualized change in perceived peer validation for members in general and with residualized change in hope for immigrant-origin members only. Contrary to our expectations, we did not find significant associations for critical consciousness. Findings suggest how groups addressing issues of equity and justice can promote members' empowerment. 相似文献
103.
Jackman Patricia C. Sanderson Rebecca Haughey Tandy J. Brett Caroline E. White Naomi Zile Amy Tyrrell Katie Byrom Nicola C. 《Higher Education》2022,84(4):705-722
Higher Education - Doctoral researchers and early career researchers (ECRs) are crucial to producing scientific advancements and represent the future of academic leadership. Their research... 相似文献
104.
Abdullah Al-Barakati Martin White Zeeshan Patoli 《International Journal of Information Management》2014
Recent years have witnessed a noticeable proliferation in Digital Library Systems (DLSs) and their specialized form represented in Digital Heritage Resources (DHRs). DHRs usually manage a complex and varied mix of digital heritage objects of different types and formats. They tend to be complex in nature and usually involve complex, simultaneous and intersecting workflows. As a result, DHRs impose implementation challenges on any solutions that aim to manage their workflows. Thus, despite the proliferation of DHRs, it is a noteworthy trend that there is a general lack of workflow management solutions that can be utilized in such systems. As a research area that is rarely covered, this paper therefore presents the design and development of a novel Workflow Management System (WfMS) built to integrate with DHRs specifically, and DLSs in general. In this context, an experimental WfMS aimed to test the validity of workflow management integration with DHRs. The devised WfMS was built as a workflow management solution that can adequately address the specific hurdles imposed by DHR implementations. Additionally, a novel DHR implementation framework called DISPLAYS (Digital Library Services for Playing with Antiquity and Shared Heritage) is presented as a test bed for the proposed WfMS. 相似文献
106.
107.
Access to government information in electronic form is essential to the realization of a civil society, democratization, and a rule of law. Freedom of information issues are centrally important in countries around the world, and the Internet's World Wide Web offers the potential to provide freedom of information at low cost. Achieving a sound information policy to promote open government requires constant vigilance by those who care about the goal. The greatest threat is state sponsored monopoly. State sponsored monopolies are inimical to open government and rule of law because they open the possibility of censorship, because they raise prices and increase cost, and because they deprive the public of new technology developments. Agencies should never seek to restrict redissemination or to prescribe prices at which information may be distributed to redisseminated. Copyright law may be interpreted to exclude the possibility of copyright in basic public information. Finally, the proposed database protection treaty now pending before the World Intellectual Property Organization should be opposed, unless drafters add a compulsory license provision to mandate multiple sources and channels for public information locked up by intellectual property and database rights. 相似文献
108.
Henry Leffmann 《Journal of The Franklin Institute》1924,198(3):430-431
109.
110.
Henry Leffmann 《Journal of The Franklin Institute》1922,194(4):564-565