全文获取类型
收费全文 | 189篇 |
免费 | 3篇 |
国内免费 | 1篇 |
专业分类
教育 | 134篇 |
科学研究 | 43篇 |
各国文化 | 3篇 |
体育 | 4篇 |
信息传播 | 9篇 |
出版年
2023年 | 3篇 |
2022年 | 9篇 |
2021年 | 8篇 |
2020年 | 3篇 |
2019年 | 11篇 |
2018年 | 20篇 |
2017年 | 6篇 |
2016年 | 19篇 |
2015年 | 8篇 |
2014年 | 4篇 |
2013年 | 20篇 |
2012年 | 12篇 |
2011年 | 8篇 |
2010年 | 8篇 |
2009年 | 9篇 |
2008年 | 6篇 |
2007年 | 7篇 |
2006年 | 7篇 |
2005年 | 2篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2001年 | 2篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1982年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1975年 | 2篇 |
排序方式: 共有193条查询结果,搜索用时 15 毫秒
91.
Yousuf Almurtaji John Everatt Nasser S. Almenaye Ahmad S. Alazemi Dalal Abdul Hadi Alradaan 《Emotional and Behavioural Difficulties》2018,23(2):141-153
Previous studies have found significant differences between the classroom behaviour of boys and girls. Most are within a single broad cultural context and little work has been done within an Arabic/Kuwaiti one. The main aim was to investigate the differences in behaviour between boys and girls in Kuwait primary schools. Data were collected that provided comparisons across questionnaires between parent and teacher returns for over 430 students. Separate teacher observations of students (n = 671) and classroom researcher observations were also obtained. Significant differences were found across the scales, indicating higher levels of externalising misbehaviour among boys than girls. A comparison with three studies conducted in other cultural contexts using the same strengths and difficulties instrument as used in this study found similarities and differences in results between the behaviour of boys and girls. 相似文献
92.
Charu Yadav Afzal Ahmad Benedicta D’Souza Ashish Agarwal M Nandini K Ashok Prabhu Vivian D’Souza 《Indian journal of clinical biochemistry : IJCB》2016,31(2):240-242
Non-Hodgkin’s lymphoma constitutes a group of disorders originating from the malignant transformation of lymphocytes and involving either the lymph nodes or extranodal sites. NHL commonly presents in the sixth to seventh decade of life with a male preponderance (50–75 %). Recent studies have shown importance of serum LDH in prognosis of NHL. Authors report a case of a 63 year old male presenting with complaints of fever and backache for past 4 months. General and systemic examination revealed bilateral axillary lymphadenopathy and splenomegaly respectively. Serum LDH level was highly elevated (3441 U/l). Excisional axillary and bone marrow biopsy were done before oncology referral. Complete workup revealed diffuse Non-Hodgkin’s lymphoma with bone marrow infiltration. Patient died because of acute renal failure due to NHL and DM 2 (Type 2 diabetes mellitus). 相似文献
93.
Vishanth Weerakkody Ramzi El-Haddadeh Tomas Sabol Ahmad Ghoneim Peter Dzupka 《International Journal of Information Management》2012
In the last decade, electronic government in Europe has emerged and established itself as a viable alternative channel for public service delivery. While e-government has now matured in most developed European countries, transition economies in Europe, have only recently begun to recognise its potential benefits and incorporated e-government as part of their national strategy. Although time may result in the amplification of e-government experience for transition economy countries, lessons drawn from developed countries indicate that political, fiscal, social, strategic and organisational issues need to be addressed when formulating plans for deploying e-government. Using case study research, this paper examines strategies adopted by the UK and Slovakia in the context of e-government implementation. Particularly, the paper examines how the perspectives on e-government vision, strategy, focus and related organisational change influence the implementation and diffusion of e-government in developed and transition economies in Europe. 相似文献
94.
Abdallah Salem Farhan Almahaireh Anas Saleh Rabi Aldalaeen Suhib Khaled Ahmad Takhaineh 《International journal for the advancement of counseling》2018,40(2):173-186
The purpose of this study was to investigate the efficacy of a preventive counseling program for improving psychological hardiness (PsyH) and the positive use of social network sites (SNSs). The sample consisted of 30 students from Mu’tah University in Jordan who were randomly assigned into either an experimental group (15) or a control group (15). Two constructed scales - the PsyH scale and the Positive Use of SNSs scale - were administered to both groups pre-test and post-test, and a one-month follow-up measure was also administered to the experimental group. The findings revealed that the preventive counseling program significantly improved the level of PsyH and the positive use of SNSs and seemed to have sustained efficacy. 相似文献
95.
Rahman S Khalid N Zaidi JH Ahmad S Iqbal MZ 《Journal of Zhejiang University. Science. B》2006,7(9):732-737
INTRODUCTION Blood-Pb levels are taken as representative of dose/exposure, as all clinical symptoms resulting from the toxic effects of Pb are manifested mainly in blood. Lead exposure of children correlates with de- creased IQ, symptoms of hyper kinesis or minima brain dysfunction, poor learning, or defects in specific neuromotor tasks (Landgrin et al., 1980). Large number of observations over the years has associated lead exposure with human diseases (McMichael and Johnson, 1982). Ca… 相似文献
96.
This paper presents the systematic development of a ‘Uses and Gratification Expectancy’ (UGE) conceptual framework which is
able to predict students’ ‘Perceived e-Learning Experience. ’ It is argued that students’ UGE as regards e-learning resources
cannot be implicitly or explicitly explored without first examining underlying communication theories and learning perspectives.
As such, the theoretical framework is grounded in the confluence of theories from communication theories and learning perspectives.
The integration of Expectancy-value Theory, and the Uses and Gratification Theory serves to accommodate the suggestion that
elearning resources offer gratifications that are expected and valued by students. The key theoretical and practical assumptions
of the UGE approach are highlighted and consistently implemented in the conceptual edifice. 相似文献
97.
Wassim H. Merzougui Matthew A. Myers Samuel Hall Ahmad Elmansouri Rob Parker Alistair D. Robson Octavia Kurn Rachel Parrott Kate Geoghegan Charlotte H. Harrison Deepika Anbu Oliver Dean Scott Border 《Anatomical sciences education》2021,14(3):296-305
Methods of assessment in anatomy vary across medical schools in the United Kingdom (UK) and beyond; common methods include written, spotter, and oral assessment. However, there is limited research evaluating these methods in regards to student performance and perception. The National Undergraduate Neuroanatomy Competition (NUNC) is held annually for medical students throughout the UK. Prior to 2017, the competition asked open-ended questions (OEQ) in the anatomy spotter examination, and in subsequent years also asked single best answer (SBA) questions. The aim of this study is to assess medical students’ performance on, and perception of, SBA and OEQ methods of assessment in a spotter style anatomy examination. Student examination performance was compared between OEQ (2013–2016) and SBA (2017–2020) for overall score and each neuroanatomical subtopic. Additionally, a questionnaire explored students’ perceptions of SBAs. A total of 631 students attended the NUNC in the studied period. The average mark was significantly higher in SBAs compared to OEQs (60.6% vs. 43.1%, P < 0.0001)—this was true for all neuroanatomical subtopics except the cerebellum. Students felt that they performed better on SBA than OEQs, and diencephalon was felt to be the most difficult neuroanatomical subtopic (n = 38, 34.8%). Students perceived SBA questions to be easier than OEQs and performed significantly better on them in a neuroanatomical spotter examination. Further work is needed to ascertain whether this result is replicable throughout anatomy education. 相似文献
98.
Maqsood Ahmad Shaheen Muhammad Arif Muhammad Sajid Mirza 《International Information and Library Review》2012,44(2):65-71
This study examines the practice of information ethics of the members of the mailing group of the Pakistan Library Automation Group, called PAKLAGPK who participate frequently in the discussions on a variety of LIS ethical issues. The research uses both qualitative and quantitative methods, including a survey questionnaire to measure subscribers' prior knowledge about certain issues in Information Ethics (IE). The research also uses the content analysis method to investigate the information communication behavior of the subscribers over this mailing group. 相似文献
99.
Ahmad H. Nasri 《Computer Science Education》2013,23(2):161-170
Computer graphics is widely used in several areas of science such as computer science education. The execution of hardware and software computer systems can be skillfully simulated using computer graphics. Such a simulation is very attractive in teaching at a university level. It is a way of visualization where students can see the unseen. In this article, the function of a simple computer is simulated. A simulator ASSEM is developed which is suitable as a teaching tool in computer system courses along with mnemonic and assembly language. The algorithm for implementing such a simulator is also presented. 相似文献
100.
A kinetic approach to evaluate salinity effects on carbon mineralization in a plant residue-amended soil 总被引:3,自引:1,他引:2
The interaction of salinity stress and plant residue quality on C mineralization kinetics in soil is not well understood. A laboratory experiment was conducted to study the effects of salinity stress on C mineralization kinetics in a soil amended with alfalfa, wheat and corn residues. A factorial combination of two salinity levels (0.97 and 18.2 dS/m) and four levels of plant residues (control, alfalfa, wheat and corn) with three replications was performed. A first order kinetic model was used to describe the C mineralization and to calculate the potentially mineralizable C. The CO2-C evolved under non-saline condition, ranged from 814.6 to 4842.4 mg CO2-C/kg in control and alfalfa residue-amended soils, respectively. Salinization reduced the rates of CO2 evolution by 18.7%, 6.2% and 5.2% in alfalfa, wheat and corn residue-amended soils, respectively. Potentially mineralizable C (Co) was reduced significantly in salinized alfalfa residue-treated soils whereas, no significant difference was observed for control treatments as well as wheat and corn residue-treated soils. We concluded that the response pattern of C mineralization to salinity stress depended on the plant residue quality and duration of incubation. 相似文献