全文获取类型
收费全文 | 3458篇 |
免费 | 541篇 |
国内免费 | 64篇 |
专业分类
4063篇 |
出版年
2024年 | 11篇 |
2023年 | 92篇 |
2022年 | 52篇 |
2021年 | 130篇 |
2020年 | 258篇 |
2019年 | 296篇 |
2018年 | 265篇 |
2017年 | 222篇 |
2016年 | 208篇 |
2015年 | 158篇 |
2014年 | 172篇 |
2013年 | 827篇 |
2012年 | 92篇 |
2011年 | 95篇 |
2010年 | 84篇 |
2009年 | 104篇 |
2008年 | 129篇 |
2007年 | 112篇 |
2006年 | 84篇 |
2005年 | 93篇 |
2004年 | 74篇 |
2003年 | 46篇 |
2002年 | 29篇 |
2001年 | 33篇 |
2000年 | 42篇 |
1999年 | 19篇 |
1998年 | 25篇 |
1997年 | 21篇 |
1996年 | 23篇 |
1995年 | 25篇 |
1994年 | 15篇 |
1993年 | 7篇 |
1992年 | 11篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 2篇 |
1986年 | 2篇 |
1985年 | 19篇 |
1984年 | 26篇 |
1983年 | 14篇 |
1982年 | 15篇 |
1981年 | 21篇 |
1980年 | 16篇 |
1979年 | 14篇 |
1978年 | 11篇 |
1977年 | 19篇 |
1976年 | 7篇 |
1975年 | 14篇 |
1974年 | 8篇 |
1973年 | 11篇 |
排序方式: 共有4063条查询结果,搜索用时 15 毫秒
241.
Antepartum Foetal surveillance is the most vital epoch of investigation during the pregnancy period. This surveillance would provide an opening to plan and manage the Foetus during Intrapartum and Antepartum stages of pregnancy. Moreover, it will help to identify high risk Foetuses during pregnancies which are complicated by maternal health conditions like diabetes mellitus, intrauterine growth restriction, etc. The foetal electrocardiogram (fECG) signal can be detected in the course of pregnancy from the Antepartum stage. Generally, fECG signal analysis is not carried out for Foetal surveillance. Rather, the traditional methodologies like phonocardiogram, etc. are being utilized. The reason is the unavailability of an effective methodology for providing good quality fECG signal. The proposal of a hybrid tactic called Bayesian Deep Belief Network (BDBN) for fECG signal enhancement is presented in this article. The proposed BDBN technique involves Baye’s filtering methodology in amalgamation with Deep Belief Network. The Baye’s filtering was employed to eliminate undesired signal components. Deep learning (DL) technique was utilized with Deep belief network (DBN) to extract high quality fECG signal. The methodology resulted with good quality fECG signal which is indeed valuable for timely Physician analysis. 相似文献
242.
Robert Tyminski 《The Journal of analytical psychology》2020,65(1):27-43
Boys and young men more frequently live out aspects of their psychic and social alienation online. This paper explores some of the risks and dangers that can arise from retreats into the two-dimensional world of cyberspace. It focuses more specifically on videogaming called MOBA, multi-player online battle arena games, in which players point and shoot at others. A case example emphasizes the clinical problems emerging from violent fantasies that seek a false form of containment in cyberspace. Themes of destructive fantasizing are further amplified through images of apocalypse, which are often prevalent in combat arena videogames. Textual sources from the Book of Revelation offer possible understanding for various elements of destructiveness as it appears in vulnerable male psyches. Therapeutic contact that combines a relational, containing approach and a broadly spiritual and soulful perspective can provide a path to healing such violent splits within the psyches of boys and young men. 相似文献
243.
This is a quantitative study of an 11-year-old boy diagnosed with major depression who in all but one session made a sandplay. A computerized system was used to analyse the written verbalizations on four dimensions of positive and negative: emotions, contracts (psychosocial agreements, relationships, etc.), performance (behaviour) and rewards. It was hypothesized that the verbalizations made by the patient (recorded by the therapist) would become more positive and less negative during the course of therapy. The positive and negative values of the four dimensions were correlated with the session number. This was supported on two (performance & contract) of the four positive dimensions (statistically significant). The hypothesis that the negative dimensions would become less negative was supported on all four dimensions (statistically significant). Thus, six of the eight hypotheses were supported. This uninvestigated area of research illustrates verbal interactions between patient and therapist were an important aspect of sandplay therapy. Through reanalysing the sessions for quantitative content, written recording of direct quotes and observation of behaviour, data was entered into a valid and reliable coding system to quantitatively analyze the verbalizations. This analysis of verbalizations of the patient and observations made by the therapist indicates sandplay therapy is multifaceted. 相似文献
244.
245.
246.
247.
248.
249.
250.