全文获取类型
收费全文 | 12637篇 |
免费 | 296篇 |
专业分类
管理学 | 1644篇 |
民族学 | 51篇 |
人才学 | 1篇 |
人口学 | 1096篇 |
丛书文集 | 78篇 |
教育普及 | 2篇 |
理论方法论 | 1170篇 |
综合类 | 337篇 |
社会学 | 6339篇 |
统计学 | 2215篇 |
出版年
2021年 | 67篇 |
2020年 | 189篇 |
2019年 | 220篇 |
2018年 | 244篇 |
2017年 | 365篇 |
2016年 | 282篇 |
2015年 | 228篇 |
2014年 | 253篇 |
2013年 | 2048篇 |
2012年 | 394篇 |
2011年 | 317篇 |
2010年 | 211篇 |
2009年 | 234篇 |
2008年 | 261篇 |
2007年 | 278篇 |
2006年 | 216篇 |
2005年 | 350篇 |
2004年 | 296篇 |
2003年 | 257篇 |
2002年 | 268篇 |
2001年 | 314篇 |
2000年 | 297篇 |
1999年 | 309篇 |
1998年 | 209篇 |
1997年 | 204篇 |
1996年 | 214篇 |
1995年 | 188篇 |
1994年 | 204篇 |
1993年 | 177篇 |
1992年 | 236篇 |
1991年 | 232篇 |
1990年 | 211篇 |
1989年 | 219篇 |
1988年 | 194篇 |
1987年 | 185篇 |
1986年 | 189篇 |
1985年 | 174篇 |
1984年 | 207篇 |
1983年 | 200篇 |
1982年 | 165篇 |
1981年 | 137篇 |
1980年 | 139篇 |
1979年 | 166篇 |
1978年 | 136篇 |
1977年 | 119篇 |
1976年 | 102篇 |
1975年 | 101篇 |
1974年 | 95篇 |
1973年 | 93篇 |
1971年 | 64篇 |
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
831.
R.W. Lawson 《Long Range Planning》1983,16(4):90-92
The aim of this paper is to make clear the difference between the marketing concept and marketing strategy. It advocates that not only should the former be used by all structures of business organizations, but that it is necessary to do so. It is the marketing strategy chosen by the firm that is dependent upon the organizational structure and not the concept. 相似文献
832.
An overview of the Salmonella enteritidis risk assessment for shell eggs and egg products. 总被引:5,自引:0,他引:5
B K Hope R Baker E D Edel A T Hogue W D Schlosser R Whiting R M McDowell R A Morales 《Risk analysis》2002,22(2):203-218
This article summarizes a quantitative microbial risk assessment designed to characterize the public health impact of consumption of shell eggs and egg products contaminated with Salmonella Enteritidis (SE). This risk assessment's objectives were to: (1) establish the baseline risk of foodborne illness from SE, (2) identify and evaluate potential risk mitigation strategies, and (3) identify data gaps related to future research efforts. The risk assessment model has five modules. The Egg Production module estimates the number of eggs produced that are SE-contaminated. Shell Egg Processing, Egg Products Processing, and Preparation & Consumption modules estimate the increase or decrease in the numbers of SE organisms in eggs or egg products as they pass through storage, transportation, processing, and preparation. A Public Health Outcomes module then calculates the incidence of illnesses and four clinical outcomes, as well as the cases of reactive arthritis associated with SE infection following consumption. The baseline model estimates an average production of 2.3 million SE-contaminated shell eggs/year of the estimated 69 billion produced annually and predicts an average of 661,633, human illnesses per year from consumption of these eggs. The model estimates approximately 94% of these cases recover without medical care, 5% visit a physician, an additional 0.5% are hospitalized, and 0.05% result in death. The contribution of SE from commercially pasteurized egg products was estimated to be negligible. Five mitigation scenarios were selected for comparison of their individual and combined effects on the number of human illnesses. Results suggest that mitigation in only one segment of the farm-to-table continuum will be less effective than several applied in different segments. Key data gaps and areas for future research include the epidemiology of SE on farms, the bacteriology of SE in eggs, human behavior in food handling and preparation, and human responses to SE exposure. 相似文献
833.
Delaney KR Pitula CR Perraud S 《Journal of psychosocial nursing and mental health services》2000,38(3):7-13
1. Inpatient treatment programs operating in the managed care environment must clearly articulate their treatment outcomes and the processes of care that are connected to these outcomes. 2. The work of inpatient psychiatric nurses can be organized and articulated through the therapeutic processes of the Four S Model: Safety, Structure, Support, and Symptom Management. 3. Nurses are vital contributors to the inpatient treatment process, but will be marginalized if they are unable to articulate how their interventions contribute to the positive treatment outcomes. 相似文献
834.
835.
Barrios LC Everett SA Simon TR Brener ND 《Journal of American college health : J of ACH》2000,48(5):229-233
Suicide, the endpoint of a continuum that begins with suicide ideation, is the third leading cause of death among the US college-aged population. The first and second leading causes of death among this age group, unintentional injury and homicide, may also be linked to suicide ideation. We used data from the National College Health Risk Behavior Survey to examine the association between suicide ideation and injury-related behaviors among 18- to 24-year-old college students. Students who reported suicide ideation were significantly more likely than students who did not report considering suicide to carry a weapon, engage in a physical fight, boat or swim after drinking alcohol, ride with a driver who had been drinking alcohol, drive after drinking alcohol, and rarely or never used seat belts. Given this clustering of injury-related risk behaviors, college prevention programs should aim to reduce risks for injuries comprehensively, rather than addressing each risk behavior separately. 相似文献
836.
837.
Tiffan WR 《Physician executive》2000,26(4):46-51
The turbulent state of health care and the rapid changes that show no sign of abating point to many career-related challenges for physician executives. How can you predict the impact of these changes on your career? What measures can be taken to prevent any negative impact of change? And how can you prevail when dealt a negative blow like job loss? The signs that foreshadow the unraveling of a physician executive's career are described. The warning signs are: Not keeping up with change, losing your influence; getting negative feedback; turning your "concerns" into complaints; the economy working against you; and being blindsided because we think leaders operate logically. Being proactive puts more control in your hands and leaves less to chance. You can prevent being blindsided if you: develop your people skills; get comfortable and involved with e-business; stay abreast of health care trends; pick up the pace; and develop "You, Inc." There is a final component to prevailing over adverse circumstances--find your work-related passion and apply it to your career. 相似文献
838.
Washburn ER 《Physician executive》2000,26(1):51-57
Generational analysis considers the differences in world view and attitude between various generations of Americans and uses this information to develop insight and business strategies. The much discussed generation gap between the Baby Boomers and their elders during the 1960s and 1970s is equaled or exceeded by the differences between Generations X and Y and the Boomers. Generation X physicians will be coming into practice over the next two decades. Successful medical leaders must understand Gen-Xers to create clinical environments that meet their unique needs and concerns. This article describes some of the philosophical and attitudinal differences between the generations and what these differences may mean to the future of medicine and health care organizations. 相似文献
839.
Hudson RJ 《Physician executive》2000,26(4):26-33
Richard L. Reece, MD, interviewed Robert J. Hudson, MD, on April 24, 2000 to discuss his experiences as a physician executive who has made the career transition from practicing physician to managed care executive to biotech entrepreneur. Along the way, he's hired and fired others, and been fired himself. Painful as it is, many physician executives' career realities include being fired. Organizations, after all, are living organizations--they grow, wither, and molt. And as they molt, organizations shed and regrow new skin. What do physician executives do when they've been fired? They go through their own cycle and retreat, reflect, and re-emerge, often reinventing themselves as they go. An essential part of this process is looking within to plumb likes and dislikes, strengths and weaknesses, nightmares and dreams, and positive and negative experiences. For most executives, out of these experiences has come a circle of friends and a Rolodex. Start by reaching out to the circle, by going through your Rolodex, and you can broadcast the news of your rebirth. 相似文献
840.
Very few demographic surveys in developing countries have gathered information on household incomes or consumption expenditures. Researchers interested in living standards therefore have had little alternative but to rely on simple proxy indicators. The properties of these proxies have not been analyzed systematically. We ask what hypotheses can be tested using proxies, and compare these indicators with consumption expenditures per adult, our preferred measure of living standards. We find that the proxies employed in much demographic research are very weak predictors of consumption per adult. Nevertheless, hypothesis tests based on proxies are likely to be powerful enough to warrant consideration. 相似文献