全文获取类型
收费全文 | 362篇 |
免费 | 2篇 |
国内免费 | 1篇 |
专业分类
教育 | 275篇 |
科学研究 | 25篇 |
各国文化 | 2篇 |
体育 | 20篇 |
综合类 | 30篇 |
信息传播 | 13篇 |
出版年
2022年 | 1篇 |
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 4篇 |
2018年 | 4篇 |
2017年 | 1篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 17篇 |
2013年 | 33篇 |
2012年 | 24篇 |
2011年 | 26篇 |
2010年 | 16篇 |
2009年 | 25篇 |
2008年 | 29篇 |
2007年 | 38篇 |
2006年 | 23篇 |
2005年 | 23篇 |
2004年 | 17篇 |
2003年 | 22篇 |
2002年 | 6篇 |
2001年 | 17篇 |
2000年 | 4篇 |
1999年 | 7篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1993年 | 1篇 |
1989年 | 1篇 |
1984年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有365条查询结果,搜索用时 8 毫秒
11.
刑法学中的麻醉手段理论的构建,应以医学领域的麻醉学理论作为基础,然而刑法学中的麻醉手段又有其自身的特殊性,主要体现在对麻醉的定义、麻醉实施方法和麻醉程度表述三个方面,在以上三个方面的研究基础上,并依据麻醉手段在罪名构成中的作用,可将刑法学中的麻醉手段分为两类,指导司法实践中的定罪量刑。 相似文献
12.
本试验采用二次饱和D———最优设计,分析了皖麦19氮素和密度7500kg/hm2的产量效应,得出综合效应方程。结果表明:氮素的增产效应大于密度,二者互作是负效应。增施氮肥能明显增加公顷穗数和穗粒数,增加密度也能增加公顷穗数,但两者增加都会使千粒重下降。达到最高产量7954kg/hm2时的施氮量是270kg/hm2,密度是172万/hm2苗,这时最理想的产量结构是每公顷540.9万穗,每穗44粒,千粒重35.3克。 相似文献
13.
陈君杰 《宁德师专学报(自然科学版)》2007,19(1):44-45,59
无核柿是闽东地区主要名、特、优产品,长期以来深受群众喜爱,市场前景广阔,具有良好的发展空间.根据多年来无核柿栽培管理的实践,对其生产管理技术进行总结整理,具有较强的实用性. 相似文献
14.
15.
Citizen participation in E-governance is, essentially, a social exchange between individuals and their government through which the citizen creates public value as well as acquires private value. The direct effects of participation antecedents on participation outcomes have been fully examined, but few researchers have investigated the internal mechanism of citizen participation at the level of psychological value perception. The roles of perceived public and private value between the participation antecedents and outcomes remain unclear. Private value merits careful research in particular as the E-governance environment is being shaped by increasing privatization and continuous IT innovation. Based on the cognitive integration theory and the civic voluntarism model, this paper proposes a theoretical framework to examine the mediating roles of two values. We built a complete research model encompassing ten hypotheses centered on citizen e-participation in the context of green commuting governance. By analyzing survey data on a green commuting platform, we demonstrate the significant mediating effects of these two values and greater effect of private value acquisition on continuous e-participation intentions than public value creation. Our results have important research implications in regards to the roles of perceived values in participation, especially perceived private value. 相似文献
16.
喜剧小品大量运用比喻、夸张、比拟等形象化的修辞手段来构造幽默,不仅使台词获得了一般意义上的形象生动,富有情趣,而且更凸显了语言的"陌生化",增加了台词的"可嚼性",还表现了戏剧语言"性格化"特征。形象手段运用应注意雅与俗、形与神、量与度等问题。 相似文献
17.
作为中国"四大名陶"之一的建水紫陶诞生于云南西南边陲的建水县,迄今已有近千年的历史积淀,它以自身独特而鲜明的两大工艺技术,即"彩泥刻填"和"无釉磨光"在中国制陶工艺的历程中占据着自己的一席之地。此外,素有"文人陶"之称的建水紫陶除特殊的工艺技巧外,诸多工匠艺人在陶面上进行书画创作,以陶代纸,独特的装饰艺术塑造出建水紫陶区别于一般陶器的艺术特点。 相似文献
18.
冷湖0-5号构造是柴达木盆地以下侏罗统为烃源岩的一个含油气构造带,目前除冷湖3号油田为侏罗系原生油气藏外,其他所发现的油田均为第三系次生油气藏。通过对该构造带三维地震精细解释及钻井分析认为,冷湖0-5号具备形成侏罗系原生油气藏的石油地质条件,并根据区域地质特征及其具体成藏条件,提出了冷湖0-5号构造"下断阶找油"的勘探思路及有利勘探方向。 相似文献
19.
东乘公麻金矿床是青海省巴颜喀拉造山带北缘Au-Sb成矿带上新发现的中型金矿床,由于受“生态保护第一,尊重群众意愿”政策影响,勘查工作主要以深部勘查为主,本文选择该矿床有代表性的VI号矿体,研究其构造原生晕轴向分带序列。研究结果表明:VI号矿体原生晕分带序列为:(Au、Sb、As)→(Bi、Pb)→(Ag、Cu、Zn);分带序列呈现“反分带”趋势,地球化学参数“反转”,前、尾晕共存,预测VI号矿体深部延伸较好或有隐伏矿体存在的可能性,圈定了成矿靶区,以期为矿山下一步探矿工作提供科学依据。 相似文献
20.
《Information processing & management》2022,59(3):102911
Machine learning applications must continually utilize label information from the data stream to detect concept drift and adapt to the dynamic behavior. Due to the computational expensiveness of label information, it is impractical to assume that the data stream is fully labeled. Therefore, much research focusing on semi-supervised concept drift detection has been proposed. Despite the large research effort in the literature, there is a lack of analysis on the information resources required with the achievable concept drift detection accuracy. Hence, this paper aims to answer the unexplored research question of “How many labeled samples are required to detect concept drift accurately?” by proposing an analytical framework to analyze and estimate the information resources required to detect concept drift accurately. Specifically, this paper disintegrates the distribution-based concept drift detection task into a learning task and a dissimilarity measurement task for independent analyses. The analyses results are then correlated to estimate the required number of labels within a set of data samples to detect concept drift accurately. The proximity of the information resources estimation is evaluated empirically, where the results suggest that the estimation is accurate with high amount of information resources provided. Additionally, estimation results of a state-of-the-art method and a benchmark data set are reported to show the applicability of the estimation by proposed analytical framework within benchmarked environments. In general, the estimation from the proposed analytical framework can serve as guidance in designing systems with limited information resources. This paper also hopes to assist in identifying research gaps and inspiring new research ideas regarding the analysis of the amount of information resources required for accurate concept drift detection. 相似文献