全文获取类型
收费全文 | 429篇 |
免费 | 22篇 |
专业分类
财政金融 | 14篇 |
工业经济 | 12篇 |
计划管理 | 101篇 |
经济学 | 75篇 |
综合类 | 39篇 |
运输经济 | 37篇 |
旅游经济 | 35篇 |
贸易经济 | 93篇 |
农业经济 | 14篇 |
经济概况 | 31篇 |
出版年
2024年 | 1篇 |
2023年 | 17篇 |
2022年 | 16篇 |
2021年 | 17篇 |
2020年 | 33篇 |
2019年 | 20篇 |
2018年 | 13篇 |
2017年 | 15篇 |
2016年 | 18篇 |
2015年 | 15篇 |
2014年 | 22篇 |
2013年 | 71篇 |
2012年 | 34篇 |
2011年 | 39篇 |
2010年 | 24篇 |
2009年 | 9篇 |
2008年 | 17篇 |
2007年 | 14篇 |
2006年 | 15篇 |
2005年 | 16篇 |
2004年 | 5篇 |
2003年 | 4篇 |
2002年 | 6篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1997年 | 2篇 |
1996年 | 2篇 |
排序方式: 共有451条查询结果,搜索用时 15 毫秒
1.
This study demonstrates the value of integrating different analytical perspectives to identify significant factors and characterize their importance. Specifically, we combine three analytical methods – partial least squares structural equation modeling (PLS-SEM), necessary condition analysis (NCA), and fuzzy set qualitative comparative analysis (fsQCA) – to create an expanded analytical process that enables informed decision-making. PLS-SEM identifies significant correlations between the predictor and outcome variables, NCA identifies critical bottlenecks required for a specific outcome, and fsQCA identifies configurations of conditions sufficient for producing a specific outcome. By applying this expanded analytical process to subjectively reported data on service quality and perceived accessibility, collected from five Nordic cities, we gain new insights into attracting an aging population to public transport. This study contributes to a better understanding of the nuances in the data, which is valuable for both research and practice. 相似文献
2.
Many organizations invest periodically in a new corporate visual identity (CVI). This study investigates the main effects of CVI changes in four organizations, taking into account three independent variables: stakeholder type (employees vs. consumers), the specific organization, and communication about the CVI change. The results show that CVI changes had positive effects on CVI appreciation and identity/image. However, the effects were different for employees and consumers and differed between specific organizations. Furthermore, adequate communication about the new CVI appeared to be important for people’s appreciation of the CVI. The implications of these findings are discussed. 相似文献
3.
为了更好地将人眼视觉感知特性应用于视频压缩系统,从而去除视频的视觉冗余成分,在利用像素域的恰可察失真(Just Noticeable Distortion,JND)阈值的基础上,结合JND阈值的空间相关性与图像块类型,提出了一种改进的残差滤波算法。该算法首先在像素域计算出每个像素的JND阈值,然后在变换单元(Transform Unit,TU)中挖掘每个像素JND阈值与其周围邻近像素JND阈值之间的空间相关性,再利用索贝儿(Sobel)边缘检测算子将TU分成不同类型的图像块,并且计算出对应的复杂度因子,最后结合上述像素JND阈值的空间相关性和TU复杂度因子对TU残差进行滤波。提出的算法模型可以嵌入到高效率视频编码(High Efficiency Video Coding,HEVC)框架。实验结果表明,在全I帧配置下,提出的算法与标准算法HM16.0相比,在人眼主观感知质量基本一致的情况下,平均可节省16.1%的码率。 相似文献
4.
Visual processing style, defined as the relative propensity to engage in visual processing rather than verbal processing, is an individual difference variable that has been frequently investigated in the consumer psychology literature. Surprisingly, numerous studies have reported no relationship between visual processing style and viewer responses to visual elements of persuasion. We argue that this accumulation of null results is due to untenable historical theoretical assumptions that underlie the construct, along with methodological problems that are inevitably brought about by those theoretical assumptions. We reconceptualize visual processing style and test an alternative empirical operationalization of it. Using both new data and a reanalysis of data published in the Journal of Consumer Research, we find the old approach yields null results, but we find the new approach yields the expected results. The new approach reinstates the utility of incorporating propensity to engage in visual processing as an individual difference variable into consumer psychology models of visual persuasion, and it reinstates a powerful individual difference variable that can help push forward the investigation of the unique aspects of visual persuasion. 相似文献
5.
针对复杂海面背景下红外图像舰船目标由于灰度不均匀、海杂波干扰大等因素造成的自动检测虚警率高、准确率低的问题,提出了一种显著区域提取和目标精确分割相结合的红外舰船目标检测方法。首先,利用基于图论的视觉显著性(Graph-based Visual Saliency ,GBVS)模型计算待检测图像的显著图,使得目标区域信息增强;其次,结合舰船目标先验信息(长短轴、面积等),利用多级阈值划分算法提取关注的显著区域,并确定原图中候选目标区域;最后,利用空间约束模糊C均值(Fuzzy C-Means,FCM)算法对候选区域进行分割,结合目标先验知识对分割区域筛选并输出目标位置。所提方法在公开数据集IRShips上与相关方法进行比较,结果表明,相比直接进行全图目标搜索的方法,所提方法不仅准确率高、执行速度快,且检测目标的位置更加精确。 相似文献
6.
从品牌标识的隐性设计线索特征视角切入,基于图底反转原理和溢出效用,本文研究旨在探究品牌标识的隐性设计线索对消费者品牌创造性感知的作用机理。三个实验研究结果表明:品牌标识的隐性设计线索比显性设计线索更能够增加消费者品牌创造性感知,且此效用成立的条件为:消费者自主发现隐性设计线索。同时,消费者的感知有趣性中介了此效用。此外,产品视觉审美集中度正向强化了品牌标识的隐性设计线索对品牌创造性感知的影响作用。 相似文献
7.
中国快速城镇化的过程伴随着各类城市绿地公园的
规划建设。对城市公园系统综合质量的科学评价关系着城市开
放空间品质的提升、居民生活质量的提高和公共服务设施规划
水平的进步。以ParkScore指数为例,对美国城市公园综合
评价系统的建设过程、评价标准和指标体系进行系统介绍和特
征评述,总结分析其在城市规划实践和研究中的应用,提出我
国应完善城市空间数据库建设、引入以人为本的评价指标和加
强指标体系建立过程的有效性等建议措施,旨在为我国城市公
园综合评价系统建设提供借鉴。 相似文献
8.
本文以餐饮类平面广告为实验材料,研究了中国和美国被试者对平面广告中的图形、色彩、文字、编排及构图等视觉元素的关注度。本研究从文化认知理论出发,以文化认知差异为前提,探寻了东西方族群对商业广告中出现的视觉信息的不同处理方式。以商业广告中视觉设计的原则为标准,解构了平面广告设计中的视觉构成元素并进行一一比较,得出商业平面广告设计中中美两国被试者的视觉元素关注度差异。最终获取了各种视觉元素的评估结果和相对权重,形成了商业图形广告设计元素关注度的先后顺序。这一实验结果对跨文化认知心理理论在跨国广告设计中的应用有借鉴和启发作用,可以为跨国公司和设计师提供技术指导,设计出更符合消费者需求的商业广告。 相似文献
9.
《Socio》2020
In austerity times, the general interest to reduce costs and improve efficiency levels often resulted into local cuts to public expenditure and profound reorganizations of existing service networks, especially in sectors like healthcare. In Italy, a recent reform prescribed the reconfiguration of time-dependent (i.e. emergency) hospital networks with the aim of improving patients’ accessibility conditions. In order to evaluate the impacts determined by this reorganization, we perform a spatial analysis in which we consider the distance from the closest facility as an accessibility measure. Results obtained from the spatial analysis confirm that users effectively benefit from the reorganization process but also that further improvements are possible, especially for the worst served ones. To this end, we also propose solving a mathematical programming model aiming at redistributing the capacities, i.e. the supply of beds, among the hospitals of the network seeking to maximize users’ accessibility. The realized computational experiments show that averagely better and even more equitable accessibility conditions could be obtained by containing the deriving reorganization costs. 相似文献
10.
Risk warning or disclosure information in advertising is only effective in correcting consumers’ judgments if enough cognitive capacity is available to process that information. Hence, comprehension of verbal warnings in TV commercials may suffer if accompanied by positive visual elements. This research addresses this concern about cross-modality interference in the context of direct-to-consumer (DTC) pharmaceutical commercials in the United States by experimentally testing whether positive facial expressions reduce consumers’ understanding of the mandated health warning. A content analysis of a sample of DTC commercials reveals that positive facial expressions are more prevalent during the verbal warning act of the commercials than during the other acts. An eye-tracking experiment conducted with specially produced DTC commercials, which vary the valence of characters’ facial expressions during the health warning, provides evidence that happy faces reduce objective comprehension of the warning. 相似文献