全文获取类型
收费全文 | 2705篇 |
免费 | 49篇 |
国内免费 | 1篇 |
专业分类
教育 | 2030篇 |
科学研究 | 150篇 |
各国文化 | 37篇 |
体育 | 226篇 |
文化理论 | 32篇 |
信息传播 | 280篇 |
出版年
2022年 | 22篇 |
2021年 | 23篇 |
2020年 | 40篇 |
2019年 | 82篇 |
2018年 | 84篇 |
2017年 | 99篇 |
2016年 | 90篇 |
2015年 | 52篇 |
2014年 | 85篇 |
2013年 | 653篇 |
2012年 | 58篇 |
2011年 | 59篇 |
2010年 | 53篇 |
2009年 | 57篇 |
2008年 | 68篇 |
2007年 | 60篇 |
2006年 | 49篇 |
2005年 | 48篇 |
2004年 | 38篇 |
2003年 | 45篇 |
2002年 | 50篇 |
2001年 | 45篇 |
2000年 | 64篇 |
1999年 | 46篇 |
1998年 | 30篇 |
1997年 | 23篇 |
1996年 | 27篇 |
1995年 | 33篇 |
1994年 | 21篇 |
1993年 | 33篇 |
1992年 | 42篇 |
1991年 | 36篇 |
1990年 | 34篇 |
1989年 | 26篇 |
1988年 | 25篇 |
1987年 | 31篇 |
1986年 | 19篇 |
1985年 | 31篇 |
1984年 | 19篇 |
1983年 | 19篇 |
1982年 | 23篇 |
1981年 | 28篇 |
1980年 | 16篇 |
1979年 | 23篇 |
1978年 | 22篇 |
1977年 | 14篇 |
1976年 | 23篇 |
1975年 | 11篇 |
1968年 | 10篇 |
1889年 | 9篇 |
排序方式: 共有2755条查询结果,搜索用时 15 毫秒
241.
242.
Nicholas D Williams P Smith A Longbottom P 《Health information and libraries journal》2005,22(1):35-43
AIMS/OBJECTIVES: To undertake an information-needs analysis of operating theatre staff in order to inform the development of a specialist library of the National Electronic Library of Health (NeLH). SETTING: Three hospitals in an NHS Trust in a rural county in the north of England. METHODS: In-depth interviews, during which staff were questioned in regard to their job roles and information needs, information-seeking behaviour, access to computers, use and perceptions of the NeLH, and what they would like from a specialist library. RESULTS: Information needs were found to concern direct care, professional and academic development, medical devices knowledge and administration. Currency and speed of delivery were the key information requirements. Poor communication appeared to be a major problem for many staff and inhibited efficient information exchange. When using the Web, both clinical and non-clinical staff searched in a similar fashion to health consumers generally, despite their need for highly specialist information. Most respondents reacted warmly to the idea of the proposed National Electronic Library for Theatre Staff (NeLTS) and made several practical suggestions for suitable material. However, access was problematic for nurses and might prove to be an obstacle to take-up of the Specialist Library. CONCLUSIONS: Communication difficulties, the fragmentation of data in the field and the consequent difficulties of finding information point to the need for an NeLTS. However, for this library to embrace and succeed with all the various groups that constitute the operating theatre staff, issues of access and digital literacy need to be addressed. 相似文献
243.
Effects of instructions on an individual's verbal behavior 总被引:1,自引:0,他引:1
244.
245.
In this study, we investigated trunk coordination during rate-controlled bipedal vertical dance jumps. The aims of the study were to investigate the pattern of coordination and the magnitude of coordination variability within jump phases and relative to phase-defining events during the jump. Lumbar and thoracic kinematics were collected from seven dancers during a series of jumps at 95 beats per minute. The vector coding technique was used to quantify the pattern and variability of trunk coordination. Coordination was predominantly anti-phase during propulsion and landing. Mean coordination variability peaked just before the landing phase and at the transition from landing to propulsion phases, and was lowest during the propulsion phase just before toe-off. The results indicate that peaks in variability could be explained by task and phase-specific biomechanical demands. 相似文献
246.
In this study, we compared hamstring (H) and quadriceps (Q) strength changes in men and women, as well as changes in conventional and functional H:Q ratios following an identical 12-week resistance training program. An isokinetic dynamometer was used to assess 14 male and 14 female participants before and after the intervention, and conventional and functional H:Q ratios were calculated. Hamstring strength improved similarly in men and women, but improvement in quadriceps strength was significantly greater in men, while women showed only modest improvements. For the conventional and functional H:Q ratios, women showed significantly greater improvements than men. Both men and women were able to exceed the commonly recommended 0.6 conventional and 1.0 functional H:Q ratios after the 12-week lower-body resistance training program. 相似文献
247.
Nancy Smith Sharon Prybylo Teresa Conner-Kerr 《Cardiopulmonary Physical Therapy Journal》2012,23(1):36-42
Purpose
The aims of the study were to differentiate: (1) physical therapy (PT) students’ preferred method for learning electrocardiographic (ECG) recognition utilizing standardized patient (SP) and human patient simulation (HPS) approaches, (2) the impact of HPS or SP on confidence in interpreting ECG, and 3) the effect of HPS or SP on students’ ability to make clinical decisions based upon ECG interpretation.Methods
“Three educational methods were employed to teach ECG recognition to two different years of novice PT students enrolled in a cardiopulmonary physical therapy class. First, all students had a traditional lecture on ECG. Following the lecture, two problem-based learning (PBL) approaches were utilized. One approach used a SP and paper ECG strips, and the second approach utilized HPS with simulated ECG monitoring.”1 Following the two PBL approaches, a post instructional survey regarding the learning experiences was conducted. Following instruction, each cohort (n = 24, n = 29) of PT students was given a mixed methods survey about their experience.Results
Survey return rate amongst both cohorts was 77%. Independent sample of individual cohort and paired t-tests of combined data comparing HPS to SP revealed a strong preference for HPS (p = 0.003 (2008 cohort) and p = 0.0001 (2010 cohort)) and combined cohort (p = 0.0001). There were no significant differences in responses between cohorts or preference between the HPS method and the use of SP and HPS combined. Additionally, 75% of respondents either strongly agreed or agreed that they felt confident with their skill in ECG interpretation as presented with HPS or SP. 90% either strongly agreed or agreed that they understood how the ECG relates to patient treatment. Summative assessment utilizing HPS revealed that students were competent in their performance in ECG recognition and clinical decision making related to patient treatment.1Conclusion
Data support that HPS was the preferred method to improve student confidence in ECG recognition and interpretation.Key Words: human patient simulation, electrocardiography, critical care management, educational technology 相似文献249.
Smith CE 《American annals of the deaf》2006,151(5):519-529
An exploratory study was designed to describe Internet search behaviors of deaf adolescents who used Internet search engines to complete fact-based search tasks. The study examined search behaviors of deaf high school students such as query formation, query modification, Web site identification, and Web site selection. Consisting of two fact-based search tasks, the study was done in four regional day school programs for the deaf. As students conducted two search tasks, they completed task analyses of the selected Web sites and gave reasons for their selections. The research also identified the processes used by deaf students to compensate for limited English reading abilities while navigating search engines results that were typically written well above deaf students' average reading level. The results demonstrated that deaf adolescents were unable to initiate, conduct, analyze, or validate effective Internet searches in response to fact-based search tasks. 相似文献
250.
Background: This paper outlines developments in medical information in Latvia since independence from the former USSR in 1991, and analyses the health information gap faced by professionals. Objectives: To explore international initiatives and co‐operation in health information provision in Latvia; to describe the activities of Latvian medical librarians at national, regional and international level; to look at health information provision by specialist information centres; and to discuss the role of librarians in health information provision in public libraries. Methods: An extensive search was made of databases and medical library and health information centre staff were interviewed; a questionnaire survey of librarians was carried out. Results: International initiatives and co‐operation by medical librarians have extended their services at national, regional and international level. Health information portals exist, with online contacts and links to smaller health centres and organizations, but rarely employ qualified librarians or information professionals. Ninety‐three per cent of public librarians had provided health information, with 79% using the Internet. The most popular sources of health information were magazines, books, local pharmacies and the Internet, but mostly for healthy lifestyle, not medical problems. Conclusions: E‐health and medical informatics are high government priorities. Medical librarians are actively involved in these initiatives. 相似文献