全文获取类型
收费全文 | 166篇 |
免费 | 6篇 |
国内免费 | 1篇 |
专业分类
教育 | 120篇 |
科学研究 | 8篇 |
体育 | 1篇 |
信息传播 | 44篇 |
出版年
2021年 | 3篇 |
2020年 | 3篇 |
2019年 | 6篇 |
2018年 | 11篇 |
2017年 | 3篇 |
2016年 | 3篇 |
2014年 | 7篇 |
2013年 | 28篇 |
2009年 | 4篇 |
2008年 | 3篇 |
2007年 | 3篇 |
2006年 | 2篇 |
2002年 | 2篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1990年 | 6篇 |
1989年 | 3篇 |
1987年 | 2篇 |
1986年 | 7篇 |
1985年 | 3篇 |
1983年 | 4篇 |
1978年 | 2篇 |
1948年 | 1篇 |
1946年 | 1篇 |
1944年 | 1篇 |
1943年 | 1篇 |
1941年 | 1篇 |
1940年 | 3篇 |
1939年 | 2篇 |
1938年 | 3篇 |
1937年 | 1篇 |
1936年 | 1篇 |
1935年 | 1篇 |
1934年 | 1篇 |
1933年 | 1篇 |
1932年 | 3篇 |
1929年 | 1篇 |
1928年 | 3篇 |
1927年 | 1篇 |
1925年 | 2篇 |
1921年 | 2篇 |
1920年 | 1篇 |
1915年 | 2篇 |
1840年 | 1篇 |
1838年 | 1篇 |
排序方式: 共有173条查询结果,搜索用时 15 毫秒
111.
Andrea M. Liceaga Tameshia S. Ballard Levon T. Esters 《Journal of Food Science Education》2014,13(2):28-32
Purdue Univ.'s College of Agriculture developed an Advanced Life Sciences (ALS) program in partnership with several high schools across Indiana. As part of ALS, secondary educators take an introductory food science (FS) course (ALS‐Foods) and teach it at their high school. High school students taking the ALS‐Foods receive dual credit for an introductory course required for all FS majors at Purdue. The goal of this project was to develop an online course to improve content knowledge and self‐efficacy of secondary educators in the field of FS. The course was offered over a 3‐wk period and consisted of 3 learning modules focused on food chemistry, food microbiology, and food processing. Modules included class activities, videos, study questions, and teaching tools. Participants were assessed on content knowledge through written assignments, quizzes, and a final examination. Twenty secondary educators from several states were enrolled. Overall, content knowledge increased significantly (P < 0.05) across all 3 modules after completing the course. Highest scores were in food microbiology/safety (84%), followed by food processing (76%) and food chemistry (70%). A precourse survey indicated that the majority (>80%) of participants felt they had “no‐confidence” to “little‐confidence” in teaching FS concepts related to the 3 modules. Upon completing the course, the confidence level of all participants increased to “some‐confidence” or “complete confidence.” By strengthening the knowledge level of secondary educators, they will be better prepared to teach FS and subsequently, more high school students could be exposed to FS and consider it as a career. 相似文献
112.
Madeleine Arnot 《Compare》2000,30(3):293-302
This paper highlights the challenges that schools in the future may face in relation to egalitarianism (in relation to gender, ethnicity and social class). It argues that new forms of egalitarian politics are likely to emerge, first, around differentiations within rather than between subordinated and powerful groups and, second, around the individualisation of learning processes and flexible educational careers. New gender concerns will challenge the concepts of educational excellence, the masculinisation of science, and schools' responses to disengagement. Traditional gender identities are changing and schools may have to respond to the gap between the educational success of young women and the discrimination they face on the labour market, and the disadvantages associated with a celebration of masculinity. The processes of individualisation and globalisation suggest that educationists and feminists have to engage with male and female experiences that could be even more different and unequal. 相似文献
113.
114.
115.
116.
Thomas Hartley Brian Stevens Kiran D. K. Ahuja Madeleine J. Ball 《Indian journal of clinical biochemistry : IJCB》2013,28(4):329-335
Total capsaicins are extracted from 2 mL aliquots of serum or plasma using methyl-isobutyl ketone, evaporation of the extract to dryness and reconstitution with 200 μL of acetonitrile. The HPLC mobile phase is 40:60 water:acetonitrile. The absorbance of the eluent is monitored at 205 nm. Standardisation uses a known mixture of pure capsaicin and dihydrocapsaicin. Accuracies are 98.9 and 100.6 % for capsaicin and dihydrocapsaicin respectively. Inter batch reproducibility for both is 15 %. The limits of detection are 2.6 and 3.8 ng/mL for capsaicin and dihydrocapsaicin respectively. Analyses of sera obtained previously from human subjects who had eaten chilli containing meals showed that in those that absorbed capsaicins (N = 30) then the median, mean and SD of their serum capsaicin were: 13.4, 18.9 and 16.3 ng/mL. The corresponding data for those sera (N = 13) that had measurable levels of dihydrocapsaicin were: 6.9, 7.5 and 3.6 ng/mL. This procedure is suitable for use in prospective studies of the metabolism of orally ingested chilli. 相似文献
117.
ABSTRACT Faculties are aging along with the rest of society. Low retirement rates and slow growth limit the number of new hiring opportunities in many institutions. Universities face a series of common challenges that will shape higher education in the 21st century. In order to maintain high quality faculties in the coming years, universities must develop compensation policies and employment practices that are appropriate for the new economic and demographic environment. This paper examines existing human resources (HR) policies and considers potential modifications that will enable institutions to recruit, retain, and retire faculty in the coming years. The analysis reviews the soaring cost of health insurance for active and retired faculty and how these plans are being amended. We also review the widespread adoption of phased retirement plans and the use of early retirement programs as components of HR policy. The increasing reliance on nontenure track faculty is also described. The analysis focuses on the challenges that universities face in the current economic and demographic conditions and the methods that administrators can adopt to fulfill their teaching and research missions. The paper presents the results from a national conference consisting of new research and intense discussion by scholars, administrators, policymakers, and HR consultants. 相似文献
118.
Rene N. Ballard 《College Teaching》2013,61(2):64-66
ABSTRACTGamification incorporates game-elements in non-gaming situations to enhance student engagement and desired behavior. This study examined participant's willingness to take part in gamified activities where reward systems were not directly tied to course grades. Participants enrolled in a technology integration course for preservice teachers, were grouped on subject-specific interests, and designed 30-minute presentations on technology integration. Over two semesters, an optional gaming activity was included in five course sections acting as the treatment group, and four sections acted as non-blind control groups. Data was collected from pre-, mid-, and post-surveys that investigated previous gaming experience, game motivations, group project perceptions, and perceived willingness to participate in the game. The treatment group indicated their perceptions of game play during mid- and post-surveys. Participants in all sections completed meeting history worksheets to describe weekly group and individual meetings. The results indicated significant differences between mid- and post-surveys regarding individual participation, group pursuits, individual work, frequency of group meetings, group preparation, and purchased items. The findings indicated a significant difference between treatment and control groups regarding hours spent in groups. Recommendations were provided for the practice of gamification in educational settings. 相似文献
119.
120.