全文获取类型
收费全文 | 362篇 |
免费 | 15篇 |
国内免费 | 3篇 |
专业分类
管理学 | 12篇 |
民族学 | 5篇 |
人口学 | 3篇 |
丛书文集 | 13篇 |
理论方法论 | 11篇 |
综合类 | 185篇 |
社会学 | 118篇 |
统计学 | 33篇 |
出版年
2024年 | 1篇 |
2023年 | 9篇 |
2022年 | 2篇 |
2021年 | 6篇 |
2020年 | 8篇 |
2019年 | 5篇 |
2018年 | 15篇 |
2017年 | 11篇 |
2016年 | 15篇 |
2015年 | 10篇 |
2014年 | 14篇 |
2013年 | 39篇 |
2012年 | 23篇 |
2011年 | 18篇 |
2010年 | 19篇 |
2009年 | 14篇 |
2008年 | 21篇 |
2007年 | 17篇 |
2006年 | 19篇 |
2005年 | 17篇 |
2004年 | 8篇 |
2003年 | 10篇 |
2002年 | 2篇 |
2001年 | 8篇 |
2000年 | 7篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 3篇 |
1996年 | 17篇 |
1995年 | 8篇 |
1994年 | 4篇 |
1993年 | 7篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有380条查询结果,搜索用时 15 毫秒
101.
The mass media provides a frame for discourse around important health issues, and it has been widely demonstrated that the development and reinforcement of stereotypes of minority groups are strongly influenced by the news and entertainment media. An extensive search of academic databases failed to locate any studies which examined the representation of autism in the news media, although there were a number of articles on the media role in the autism and MMR debate. This paper reports on an examination of the extent, and nature, of coverage of ‘autism spectrum disorders’ in the Australian print media between 1996 and 2005. Key findings include a relatively limited amount of factual information and a dual stereotype of people labeled as having autism as either dangerous and uncontrollable or unloved and poorly treated. The paper concludes with a discussion of the implications of the nature and tone of this coverage of autism and its potential impact on individuals described as ‘autistic’, their families and carers and the community in general. 相似文献
102.
直接数字频率合成器中的相位噪声分析 总被引:3,自引:0,他引:3
相位噪声和杂散性能是制约直接数字频率合成器(DDS)用于高稳定频率源的关键指标。文中给出了一种全新思维,定量分析了DDS中由相位截断引起的杂散谱及由相位截断、ROM存储器有限字长和DAC性能对其相位噪声性能的影响。 相似文献
103.
基于Miner法则,分析了工程上常用的阶梯谱级数对疲劳寿命精度的影响.建立了变换的JS-N曲线与阶梯谱拟合曲线的应力强度干涉数学模型,采用参数求解的数值解析法得到参数,并推导出了疲劳损伤的积分公式.对铁路货车转向架侧架运行36万公里(一个段修期)内分阶段的多次载荷谱测试数据进行分析,得出随着各阶段阶梯谱离散级数的增大,损伤成收敛趋势,寿命预测精度高.采用本文的分析方法,建立了侧架一个段修期的载荷谱概率模型,预测了侧架的寿命及其可靠性. 相似文献
104.
本文介绍了作者在音乐与气功相结合方面所作的创造性实践和研究。在特制音乐声波激发下,能很收快到传统气功的功效,使练功者达到强身治病的目的。实践证明音乐逍遥气功对多种慢性病有很好疗效。文章从物理学、生物物理学的角度,以系统论的方法对音乐逍遥气功的机理进行探讨。认为这是自觉利用各种形式、以一定规律动态变化的能量流的一种新的尝试。 相似文献
105.
Ingeborg Stiefel Alexandra K. Shields Michelle A. Swain Waverney R. Innes 《Australian and New Zealand Journal of Family Therapy》2008,29(1):1-9
Asperger's syndrome (AS) as a diagnostic category has gained enormous popularity and the label is being applied with increasing liberality. While greater awareness of the disorder may be of advantage to certain children and their families, we argue that the over‐inclusive use of the diagnosis may also lead to professional conflicts and ethical dilemmas. Perhaps most concerning of these is that diagnostic ‘generosity’ may exclude children from treatments they would have received if an alternative formulation had been considered. We present clinical scenarios, with special consideration of contextual and intergenerational influences on the children's early lives, and offer alternative conceptualisations. We argue that the new ‘epidemic’ of Asperger's should not be allowed to compromise our professional standards. Assessment should always include a detailed family and developmental history. Finally, we would be interested in feedback from clinicians working in this field. 相似文献
106.
儿童孤独症及其行为疗法 总被引:2,自引:0,他引:2
刘菂斐 《合肥学院学报(社会科学版)》2005,22(4):136-138
儿童孤独症是一种广泛性发展障碍,以严重的、广泛的社会相互影响和沟通技能的损害以及刻板的行为、兴趣和活动为特征。由于儿童孤独症和童年期发病的精神分裂症等常常被混为一谈,因此认识孤独症患儿的各种表现特征并掌握行为治疗的方法是十分必要的。 相似文献
107.
用谱分析技术诊断齿轮箱故障。总结了诊断齿轮箱故障常用的几种谱分析法及其特点。从实例的几种谱分析结果中,可看出自回归谱有更高的精度和谱分辨率,从而较客易而准确地找出故障的主要频率成分。 相似文献
108.
David R. BRILLINGER 《Revue canadienne de statistique》1993,21(1):1-19
Statistical concepts and techniques are basic to scientific investigation. One concept that enjoys both a theoretical and a physical existence is the spectrum. A spectrum may be described as a display of the intensity or variability of a phenomenon versus period or frequency. Spectra are particularly useful in the study of systems subject to resonance, but have many other uses. This paper begins with some of the historical development of the field, describing a sequence of contributions by Michelson, Schuster, Einstein, Fisher, Bartlett, Tukey, and Whittle. The paper next presents collaborative applications to the study of the free oscillations of the earth, to the dispersion of seismic surface waves and to nuclear-magnetic-resonance spectroscopy. Finally, there is mention of open problems and opinions on future directions. 相似文献
109.
The purpose of this study was to evaluate the effectiveness of 2 transfer of stimulus control procedures to teach tacting to individuals with autism. Five participants with differing verbal skills were assessed by a subset of the ABLLS prior to intervention, then were taught 36 previously unknown tacts using the receptive-echoic-tact (r-e-t) and echoic-tact (e-t) transfer procedures. Each transfer method was used separately to establish different tacts, in a multiple baseline design across tacts for 3 sets of stimuli. The results showed that 4 out of 5 participants (who demonstrated mands, tacts, echoics, and sometimes intraverbals prior to the study) acquired all targeted tacts when either r-e-t or e-t training was presented. One participant (who emitted no verbal operants at the onset of the study) did not acquire any tacts. While some participants appeared to learn more quickly with one transfer method, neither method emerged as more efficient with learners with fewer or more extensive verbal skills. The results indicate that both transfer methods promoted the acquisition of tacts for learners with autism with at least minimal verbal skills. 相似文献
110.
研究以柱层析-红外光谱法为主,辅以显色反应法和溶解试验法,对皇冠盖内基漆进行定性分析。研究方法是对复杂成分的涂料、粘合剂类材料定性分析的一种探索,定性分析结果是合成国产优良性能皇冠盖基漆的参考。 相似文献