全文获取类型
收费全文 | 2683篇 |
免费 | 359篇 |
国内免费 | 456篇 |
出版年
2024年 | 12篇 |
2023年 | 69篇 |
2022年 | 72篇 |
2021年 | 91篇 |
2020年 | 150篇 |
2019年 | 148篇 |
2018年 | 146篇 |
2017年 | 144篇 |
2016年 | 165篇 |
2015年 | 106篇 |
2014年 | 153篇 |
2013年 | 352篇 |
2012年 | 122篇 |
2011年 | 175篇 |
2010年 | 92篇 |
2009年 | 131篇 |
2008年 | 170篇 |
2007年 | 233篇 |
2006年 | 174篇 |
2005年 | 151篇 |
2004年 | 119篇 |
2003年 | 100篇 |
2002年 | 81篇 |
2001年 | 54篇 |
2000年 | 50篇 |
1999年 | 39篇 |
1998年 | 52篇 |
1997年 | 29篇 |
1996年 | 21篇 |
1995年 | 17篇 |
1994年 | 13篇 |
1993年 | 17篇 |
1992年 | 11篇 |
1991年 | 6篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 6篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
排序方式: 共有3498条查询结果,搜索用时 15 毫秒
151.
152.
本研究通过初始问卷编制、项目分析、探索性因素分析和验证性因素分析等程序,编制普通高校大学生综合国防素质量表,并进行了相关实证测量。结果显示,量表有8个维度共35个题项。量表的α系数和重测信度均符合心理测量学指标要求,具有良好的结构效度、聚敛区分效度与校标关联效度,可用于大学生综合国防素质的测量。测量结果发现,大学生综合国防素质总体处于中等偏上水平,且存在显著的性别差异与年级差异。 相似文献
153.
以146名小学一年级儿童为研究对象, 进行了历时2年的3次追踪测试, 考察小学生从一到三年级的语素意识、汉字识别和词汇知识之间发展关系的变化。在控制了语音意识、快速命名、正字法意识、一般认知能力和自回归效应后, 结果发现:(1)一年级时的汉字识别显著预测二年级的同音语素意识和同形语素意识; (2)一年级时的词汇知识显著预测二年级的复合语素意识和汉字识别; (3)二年级时的汉字识别和词汇知识对三年级的同音语素意识、同形语素意识和复合语素意识均有显著预测作用; (4)二年级时的同形语素意识对三年级的词汇知识具有显著预测作用。结果表明, 小学一至三年级的汉字识别和词汇知识对语素意识具有预测作用; 三种语素意识对汉字识别和词汇知识的预测作用中, 只有同形语素意识能够显著预测词汇知识; 三种语素意识、汉字识别和词汇知识的发展关系存在变化且具有阶段性特点。 相似文献
154.
To provide a better understanding of individual driver’s driving style classification in a traditional and a CV environment, spatiotemporal characteristics of vehicle trajectories on a road tunnel were extracted through a driving simulator-based experiment. Speed, acceleration, and rate of acceleration changes are selected as clustering indexes. The dynamic time warping and k-means clustering were adopted to classify participants into different risk level groups. To assess the driver behavior benefits in a CV environment, an indicator BI (behavior indicator, BI) was defined based on the standard deviation of speed, the standard deviation of acceleration, and the standard deviation of the rate of acceleration change. Then, the index BI of each driver was calculated. Furthermore, this paper explored driving style classification, not in terms of traditional driving environment, but rather the transition patterns from a traditional driving environment to a CV environment. The results revealed that inside a long tunnel, 80 % of drivers benefited from a CV environment. Moreover, drivers might need training before using a CV system, especially female drivers who have low driving mileage. In addition, the results showed that the driving style of 69 % of the drivers’ transferred from a high risk-level to a low risk-level when driving in a CV environment. The study results can be expected to improve driving training education programs and also to provide a valuable reference for developing individual in-vehicle human-machine interface projects and other proactive safety countermeasures. 相似文献
155.
As vulnerable traffic participants, electric bike (EB) riders have suffered from high collision casualties in recent years. Road user anger has been shown to affect riding behavior and lead to traffic accidents. Besides, studies have highlighted that there may be differences in road user anger in driving different vehicles due to varying perceptions of the relative vulnerability of vehicle type characteristics (control performance and cognitive processes). However, current road user anger investigations for two-wheelers have focused mainly on conventional cyclists, and little attention has been paid to e-bike riders, especially with the emerging group of delivery e-bike (DEB) riders. This study aims to develop a Cycling Anger Scale (CAS) for EB riders based on the Cycling Anger Scale and explore the road user anger experienced by EB riders and the differences between ordinary and delivery EB riders. The survey was conducted in Nanjing, China, and collected from 281 Ordinary EB (OEB) riders and 268 DEB riders. Exploratory factor analysis and confirmatory factor analysis are conducted to determine the revised four-factor structure of the 14-item CAS for EB. The results show that the scores of police interaction and cyclist interaction on the CAS subscales are significantly different between the OEB and DEB groups. The police interaction is the largest source of anger for both groups. Besides, the aggressive riding behaviors are significantly correlated with riding anger, which can be predicted by different aspects of riding anger for the two types of EB riders. This study provides a theoretical basis for designing intervention measures and safety education programs to enhance EB riders’ road safety. 相似文献
156.
本研究采用边界范式,考察汉语阅读中读者是否在副中央凹处利用首词素的位置概率信息进行词切分和词识别。采用2(首词素位置概率:高、低)×2(预视类型:相同预视、假字预视)的被试内实验设计,以双字词为目标词,记录大学生阅读句子时的眼动轨迹。结果发现,在跳读率和第一遍阅读的眼动指标中,被试在高、低首词素位置概率条件中获得的预视效益量无显著差异。该结果表明,读者并未在副中央凹处加工首词素的位置概率信息。结合前期研究推断,首词素位置概率信息没有作用于汉语阅读的词切分和词识别。 相似文献
157.
158.
HAN Xiao 《Frontiers of Philosophy in China》2022,17(4):542
The concept of the shared values of humanity, embodying the spirit of putting people first and solving real-life problems, is of great significance for constructing a new global order and building a human community with a shared future. The shared values of humanity respect the differences in understanding and realization paths of different civilizations, and seek common grounds with an inclusive and open attitude. The core socialist values are an embodiment and an extension of the shared values of humanity. The fine traditional Chinese culture has also laid a profound cultural basis for the pursuit of the shared values of humanity, enabling us to make up a better scheme for building a human community with a shared future from the perspective of civilization. 相似文献
159.
WU Xiaoming 《Frontiers of Philosophy in China》2022,17(3):361
The centennial exploration of the Chinese road started with the founding of the Communist Party of China (CPC). This road is essentially characterized by modernization and adapting Marxism to the Chinese context. The fundamental correlation between China’s modernization and Marxism lies in the fact that China must go through a thorough social revolution to lay the foundation for its modernization cause, which charted a historical course from new democracy to socialism. However, only adapting Marxism to the Chinese context can help China’s modernization, because it is this philosophy that is intrinsically related to China’s practice in revolution, construction and reform. The contemporary form of adapting Marxism to the Chinese context is socialism with Chinese characteristics, which holds great significance for both the Chinese nation and international socialism and the overall development of human society in the new historical phase. This is a kind of “significance for world history” because the great rejuvenation of the Chinese nation lies not only in its own development into a modern power, but also in the fact that it is actively opening up the possibility of a new type of civilization besides completing the modernization mission and obtaining achievements from modern civilization. 相似文献
160.
OUYANG Kang 《Frontiers of Philosophy in China》2022,17(3):379
The Chinese path to modernization features socialist modernization with Chinese characteristics. It not only adheres to scientific socialism with Chinese characteristics but is also the Chinese road of development during global modernization, the path to realizing the great rejuvenation of the Chinese nation, and the creation of a new model for human advancement. Through the Chinese path to modernization, Chinese civilization with a long history now displays a brand-new form and its unique values and significance on the global stage. This paper probes into the vicissitudes of the Chinese nation in modern times, and reveals the leapfrog development of the great national rejuvenation to highlight the significance of the Chinese modernization by solving the “mystery of figures” ; explores the Chinese nation’s ideological progress during modernization since modern times to show the thought development that Chinese modernization achieved by analyzing the “mystery of thought” ; elaborates on the value orientation of the great national rejuvenation to demonstrate the guidance on values provided by Chinese modernization by explaining the “mystery of values” ; and studies the great rejuvenation of the Chinese nation from a strategic perspective to tap into the rich significance and institutional underpinnings of Chinese modernization by unraveling the “mystery of characteristics.” The Chinese Communists have conducted comprehensive theoretical explorations and pioneered practical innovations in the above aspects, which formed its powerful guidance in ideas and values, the underpinnings of the systematic structures and institutions, and created the Chinese path to modernization. The Chinese path to modernization pushes forward the leapfrog development of the Chinese nation towards modernization, advances the national rejuvenation along the right track, builds a new form of Chinese civilization, and shape the development course of contemporary human culture. 相似文献