全文获取类型
收费全文 | 394篇 |
免费 | 25篇 |
专业分类
管理学 | 33篇 |
民族学 | 4篇 |
人才学 | 1篇 |
人口学 | 26篇 |
丛书文集 | 51篇 |
理论方法论 | 51篇 |
综合类 | 52篇 |
社会学 | 175篇 |
统计学 | 26篇 |
出版年
2023年 | 11篇 |
2022年 | 3篇 |
2021年 | 9篇 |
2020年 | 15篇 |
2019年 | 27篇 |
2018年 | 25篇 |
2017年 | 32篇 |
2016年 | 18篇 |
2015年 | 20篇 |
2014年 | 16篇 |
2013年 | 57篇 |
2012年 | 16篇 |
2011年 | 16篇 |
2010年 | 13篇 |
2009年 | 22篇 |
2008年 | 11篇 |
2007年 | 18篇 |
2006年 | 24篇 |
2005年 | 19篇 |
2004年 | 2篇 |
2003年 | 8篇 |
2002年 | 9篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1996年 | 7篇 |
1995年 | 2篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有419条查询结果,搜索用时 447 毫秒
1.
Aggressive behavior in pet dogs is a serious problem for dog owners across the globe, with bite injuries representing a serious risk to both people and other dogs. The effective management of aggressive behavior in dogs represents a challenging and controversial issue. Although positive reinforcement training methods are now considered to be the most effective and humane technique to manage the risk of aggression, punishment‐based methods continue to be used. Unfortunately, there has been little scientific study into the various factors influencing whether dog owners choose to use positive reinforcement techniques to manage aggression in their dogs. As such, current understanding of how best to encourage and support dog owners to use these methods remains extremely limited. This article uses a survey methodology based on protection motivation theory (PMT) to investigate the factors that influence owner use of positive reinforcement methods to manage aggressive behavior, in an attempt to understand potential barriers and drivers of use. In addition, the article provides an initial exploration of the potential role of wider psychological factors, including owner emotional state, social influence, and cognitive bias. Findings show that the perceived efficacy of positive reinforcement methods and the perceived ability of owners to effectively implement the technique are both key factors predicting future intentions and current reported use. Future interventions should focus on enhancing owner confidence in the effective use of positive reinforcement techniques across multiple scenarios, as well as helping owners manage their own emotional responses when they encounter challenging situations and setbacks. 相似文献
2.
国内官方和学术界尚未系统论述过一国在我对外政策中的地位问题。本文将其分为至关重要、非常重要和比较重要三个等级,认为印度在周边外交中地位至关重要,在大国外交中地位比较重要,在发展中国家外交中地位非常重要。 相似文献
3.
分析了全球定位系统接收机可获取的观测量。给出了载波相位平滑伪码伪距的一个递归算法结构。讨论了平滑算法初值的设定和构造伪距前向预测值,并对各种情况进行了统计分析。文中还给出了平滑算法的性能评估,结论表明载波相位平滑技术可大大改善伪距观测精度。改善程度与该算法中的权重因子和递归时间密切相关 相似文献
4.
臧云泽 《陕西青年管理干部学院学报》2002,15(2):28-30
宏观经济需求不足是我国目前经济发展所面临的主要问题 ,其存在的外在原因是消费不旺 ,这主要受到了不良的收入预期和不良的支出预期影响。而宏观需求不足的内在原因是产品质量的品种结构不合理 ,解决宏观需求不足 ,必须通过扩大需求和调整供给结构来解决。 相似文献
5.
Emma Hartnett Amie Adkin Miles Seaman John Cooper Eamon Watson Helen Coburn Tracey England Christophen Marooney Anthony Cox Mavion Wooldridge 《Risk analysis》2007,27(1):187-202
Foot and mouth disease (FMD) is considered by many as the most important animal disease in the world. FMD is highly contagious and outbreaks incur significant costs as affected countries are severely limited in their ability to trade. A number of trade commodities may be contaminated with FMD virus (FMDV) including animal products, for example, meat. As a member of the European Union, Great Britain (GB) has put in place a number of regulations to prevent the importation of pathogens in imported meat products. However, the illegal importation of meat provides a route by which safety controls may be circumvented and meat from FMD affected areas may be imported. This study assesses the FMD infection risk posed to the livestock population of GB from the illegal importation of meat, and estimates the major contributors to this overall risk, through the development of a quantitative risk assessment model. From model results, the total amount of illegal meat entering GB each year is estimated on average to be 11,875 tonnes. with 90% certainty that this is between 4,398 and 28,626 tonnes per year; of which between 64.5 and 565 kg are contaminated with FMDV. This flow of illegal meat results in an estimate of a frequency of FMD infection in GB livestock of 0.015 cases of infected animals per year, with 90% certainty it is between 0.0017 and 0.053. Imports from the region Near and Middle East account for 47% of this risk, and 68% of the risk is attributed to bone-in and dried de-boned products. 相似文献
6.
作者首次应用不同剂量的丙硫咪唑进行驱除建鲤绦虫试验。用丙硫咪唑20mg/Kg体重驱除建鲤肠道中的九江头槽绦虫,驱虫率达96.5%以上,效果好,安全可靠。 相似文献
7.
政府治理范式的成本分析 总被引:1,自引:0,他引:1
臧乃康 《福建论坛(人文社会科学版)》2005,(7):120-124
政府治理范式的区别会导致政府成本的差异。与工业社会相适应的政府治理范式显得僵化、迟钝,容易导致高成本、低效率。建构现代责任政府、创新政府治理范式、优化政府治理的成本结构,是中国降低政府成本,提升政府绩效的基本实现路径。 相似文献
8.
Gillian Schofield Jeanette Cossar Emma Ward Birgit Larsson Pippa Belderson 《Child & Family Social Work》2019,24(3):372-381
The experiences and needs of lesbian, gay, bisexual, trans and queer/questioning (LGBTQ) young people in care have been overlooked in England, in both policy and research. This paper reports on findings from the first study of LGBTQ young people in care in England and focuses on the nature of foster carers' experiences and perspectives on caring for LGBTQ young people. Qualitative interviews regarding the fostering role in caring for LGBTQ young people were conducted with a sample of foster carers (n = 26) and analysed thematically. Foster carers described the importance of offering LGBTQ young people not only the nurturing relationships that all children in care need but also availability, sensitivity and acceptance to help young people manage stigma and other challenges associated with minority sexual orientation and gender identity. The Secure Base caregiving model provided a framework for analysing the different dimensions of these relationships. Understanding caregiving roles and relationships for LGBTQ young people in care has important implications for recruiting, training, matching and supporting foster carers to care for LGBTQ young people effectively. 相似文献
9.
Jeremiah Weinstock Kyler Mulhauser Emma G. Oremus Alexandra R. D’Agostino 《International Gambling Studies》2016,16(2):316-327
Self-report purchase tasks are a novel approach examining the reinforcing value of addictive behaviour relative to increasing monetary costs required to access the addictive behaviour (i.e. demand). These measures reveal a positive relationship between the indices of demand and addiction problem severity and can elucidate factors associated with motivation for substance use. Gambling is an addictive behaviour that has not been examined using this paradigm. This study seeks to adapt and examine the purchase task for gambling behaviour. A gambling purchase task was devised that asked individuals how often per month they would gamble at various cover charges. Participants were 73 adults from the community with either gambling disorder (n = 28) or alcohol use disorder (n = 24) or were a healthy control (n = 21). Both the alcohol and gambling purchase tasks were administered. Results demonstrate discriminant validity of the gambling purchase task, as individuals with gambling disorder have significantly greater demand for accessing gambling than other groups. The alcohol purchase task also evidenced discriminant validity in that individuals with alcohol use disorder have significantly greater demand for alcohol than other groups. These findings support the use of the gambling purchase task to assess the demand for gambling. 相似文献
10.
Peers and friends are perceived as important role models for the formation of children's attitudes and behaviours. A wealth of research has aimed to establish the contribution of peers and friends to children's developing eating behaviours, and their attitudes towards eating. This review describes and evaluates such research. Experimental research examining peer modelling of food consumption and liking is reviewed, and several individual child factors that are suggested to make children more or less receptive to peer and friend influences are discussed. The influence of children's perceptions of their peers’ and friends’ eating behaviours upon their own eating practices is also explored. The benefits of future longitudinal research to improve understanding of peer and friend influences on children's eating are emphasized. 相似文献