全文获取类型
收费全文 | 126591篇 |
免费 | 1628篇 |
国内免费 | 239篇 |
专业分类
教育 | 87876篇 |
科学研究 | 13730篇 |
各国文化 | 2037篇 |
体育 | 9792篇 |
综合类 | 174篇 |
文化理论 | 1092篇 |
信息传播 | 13757篇 |
出版年
2021年 | 967篇 |
2020年 | 1676篇 |
2019年 | 2604篇 |
2018年 | 3158篇 |
2017年 | 3446篇 |
2016年 | 3461篇 |
2015年 | 2366篇 |
2014年 | 3208篇 |
2013年 | 27620篇 |
2012年 | 2463篇 |
2011年 | 2849篇 |
2010年 | 2391篇 |
2009年 | 2675篇 |
2008年 | 2489篇 |
2007年 | 2223篇 |
2006年 | 2415篇 |
2005年 | 2414篇 |
2004年 | 3080篇 |
2003年 | 2415篇 |
2002年 | 2208篇 |
2001年 | 2130篇 |
2000年 | 1831篇 |
1999年 | 1653篇 |
1998年 | 1489篇 |
1997年 | 1539篇 |
1996年 | 1727篇 |
1995年 | 1499篇 |
1994年 | 1506篇 |
1993年 | 1501篇 |
1992年 | 1586篇 |
1991年 | 1486篇 |
1990年 | 1500篇 |
1989年 | 1439篇 |
1988年 | 1271篇 |
1987年 | 1201篇 |
1986年 | 1212篇 |
1985年 | 1481篇 |
1984年 | 1334篇 |
1983年 | 1340篇 |
1982年 | 1288篇 |
1981年 | 1203篇 |
1980年 | 1189篇 |
1979年 | 1301篇 |
1978年 | 1254篇 |
1977年 | 1142篇 |
1976年 | 1042篇 |
1975年 | 837篇 |
1974年 | 844篇 |
1973年 | 813篇 |
1971年 | 665篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This article reports the results of research to determine if a significant interactive effect exists between students' lingual background (English as a primary language [EPL] versus English as a secondary language [ESL]) and question format on students' examination scores. Students were administered examinations made up of four subtests covering the same subject matter. The subtests were composed of four question formats: multiple choice quantitative, multiple choice theoretical, open-ended quantitative, and open-ended essay questions. Based on analysis of variance and analysis of covariance, significant differences were observed between EPL and ESL students depending on the type of question on the examination. 相似文献
992.
Markets,inequality, and urban schooling 总被引:1,自引:0,他引:1
Stephen J. Ball 《The Urban Review》1990,22(2):85-99
This paper considers the intellectual and political antecedents of current attempts by the British government to create a market in state education. The implications of market forces for school organization, educational values, teachers' careers and conditions of work, and equality and social justice in the inner city are also explored. It is argued that policies of competition between per capita funded schools are likely to increase the existing inequalities in school provision in England to the disadvantage of children in urban areas. 相似文献
993.
This study evaluated the emotional and marital adjustment of hearing parents of hearing-impaired youths. Participants included mothers and fathers of hearing-impaired youths and mothers and fathers of hearing youths. In contrast with expectations based on clinical impressions reported in the literature, parents of hearing-impaired youths reported less symptomatology than did parents of hearing youths, and there were no differences in the marital satisfaction of parents in intact families. Moreover, parental adjustment was not associated with the duration of time since the child was diagnosed as hearing impaired. In addition, hierarchical multiple regression analyses revealed that family cohesion was associated with low maternal symptomatology and high marital satisfaction for both spouses. For mothers, low symptomatology was associated with low stress and female gender of child; high marital satisfaction also was linked with a less severe degree of hearing loss in the youth. 相似文献
994.
To determine if neuropsychological deficits, known to precede alcohol use in those genetically predisposed to alcoholism, were present in an alcoholic population, 25 male alcoholics (mean age 41.1) were interviewed concerning alcohol usage, educational difficulties in elementary school, and family history of alcoholism. Using a regression table, discrepancies between current IQ on the Wechsler Adult Intelligence Scale-Revised (WAIS-R) (Wechsler, 1981) and achievement on the Woodcock-Johnson Psycho-Educational Battery (WJB) (Woodcock & Johnson, 1977) were calculated to determine present learning status. Forty percent of the alcoholics were found to have had special education, remedial services, or repeated grade failure concurrent with a familial history of alcoholism and current discrepancies indicative of learning disability. There were no significant differences on intelligence, years of drinking, or mean grades completed in school between this group and the rest of the subjects who did not receive services in school. Conclusions were that childhood learning disorders may be related to the development of alcoholism, particularly when alcoholism is in the family, and that special educators have a role to play in the prevention and treatment of alcoholism. 相似文献
995.
Mother-Toddler Problem Solving: Antecedents in Attachment, Home Behavior, and Temperament 总被引:2,自引:0,他引:2
In a widely cited study, Matas, Arend, and Sroufe showed that mother-toddler interaction during problem solving at age 2 years was related to the child's prior attachment security. The current study asked (1) whether an independent laboratory could replicate this attachment finding, and (2) whether problem-solving interactions relate to mother-child interactions observed at home and to child temperament measured at 6, 13, and 24 months. Replicating Matas et al., secure dyads worked more competently, and mothers showed better quality of assistance and supportive presence. Mother-child home interaction also predicted problem solving: positive involvement at home predicted effective, unconflicted problem solving. Negative control at home did not predict problem-solving interaction. Unadaptable temperament was generally related to dependency in problem solving. Several patterns of correlations appeared to be mediated by sex of child, e.g., difficult temperament in boys predicted more effective, unconflicted problem solving, while for girls it predicted more conflict. 相似文献
996.
Developing guidelines for HIV antibody testing among victims of pediatric sexual abuse 总被引:1,自引:0,他引:1
The incidence of human immunodeficiency virus (HIV) infection acquired by children through sexual abuse is presently unknown. A telephone survey of 63 practitioners of pediatric sexual abuse (PSA) assessment in the five U.S. regions with highest prevalence of HIV infection was conducted to determine the present status of guidelines for HIV antibody testing of PSA victims. No formal protocol was used by any of those surveyed, and a literature review found no existing guidelines for HIV antibody testing of PSA victims. A standard set of clinical situations was presented to practitioners to assess whether a consensus exists of indications for HIV antibody testing of abused children. Seven clinical profiles with 12 criteria were presented including HIV antibody status, AIDS/ARC clinical profile, and behavioral profile of the assailant; clinical profile of the victim; pre-assault victim behavioral profile compatible with high risk of HIV infection (exclusively adolescents); parent/guardian anxiety/psychosocial profile; and profile of the assaultive act with respect to potential transmissibility of HIV. We found an 85% or greater consensus for 6 testing criteria, and based upon these propose an interim set of HIV antibody testing guidelines for PSA victims. There was no consensus about five testing criteria, but their frequent citation merits further consideration. Clinical application of interim guidelines and design of prospective studies to quantitatively evaluate them are reviewed. 相似文献
997.
A conceptual overview of the regression discrepancy model for evaluating severe discrepancy between IQ and achievement scores 总被引:1,自引:0,他引:1
L D Evans 《Journal of learning disabilities》1990,23(7):406-412
A conceptual overview of the Regression Discrepancy Model (RDM) for determining severe discrepancy between IQ and achievement scores is presented in order to enhance understanding of the model without the use of the complex mathematical equations that constitute the model. The six specific goals of the RDM are identified, and figures illustrate the manner in which the model accomplishes each goal. Figures are also provided from a RDM computer output showing the basic outcomes of the model. Advantages and disadvantages of the RDM are discussed to further promote understanding of the model. 相似文献
998.
999.
1000.
Mayung M. Quah 《International Journal of Disability, Development & Education》1990,37(2):137-148
THE NEW EDUCATION SYSTEM was implemented in 1980 with the objective of arresting the high attrition rates of premature school leavers by providing a differentiated curriculum to suit the needs and abilities of different learners in Singapore. As a result, streaming was introduced into schools to bring out the best in every child regardless of ability. Against such a background, health, welfare and special educational services and programs for disabled people are discussed. To support the changes and improvements recommended for disabled people as contained in the Report of the Advisory Council on the Disabled(1988), the training of teachers and other rehabilitative staff are highlighted. From 1988, opportunities for the disabled have increased tremendously and the enthusiasm and efforts put in by all parties concerned with the welfare of the disabled which have greeted these recommendations thus far, augurs well for special educational development in Singapore. 相似文献