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1.
ABSTRACTViolations of linearity, symmetry, and equidistance of scale points in semantic differential scales may be due to respondents failing to figure out antonyms, to a positivity bias, or to respondents curtailing their reading the options. Multiple correspondence analysis on data provided by a randomized between-subjects experiment (split-ballot), using a web survey of 537 German residents, shows that bipolar semantic differential scales allow for linear measurement and conceal no positivity bias, and that using not suitable adjective pairs in semantic differential scales destroys symmetry. 相似文献
2.
Robert F. Nau 《Journal of Risk and Uncertainty》1995,10(1):71-91
This article explores the extent to which a decision maker's probabilities can be measured separately from his/her utilities by observing his/her acceptance of small monetary gambles. Only a partial separation is achieved: the acceptable gambles are partitioned into a set of belief gambles, which reveals probabilities distorted by marginal utilities for money, and a set of preference gambles, which reveals utilities reciprocally distorted by marginal utilities for money. However, the information in these gambles still enables us to solve the decision maker's problem: his/her utility-maximizing decision is the one that avoids arbitrage (i.e., incoherence or Dutch books). 相似文献
3.
基于MCMC稳态模拟的贝叶斯经验费率厘定信用模型 总被引:2,自引:2,他引:2
B黨lmann-Straub model is one of the most famous applications of the Bayesian method for the experience rate making.However,by the traditional B黨lmann-Straub model one cannot get the unbiased posterior estimation of the parameters when there is not sufficient prior information for the structural parameters;What's more,the difficult of computing high dimension numeration limits the application of Bayesian method.This paper introduces the Markov chain Monte Carlo simulaton method based on the Gibbs sampling after analyzing the structure of the B黨lmann-Straub model and sets up the Bayesian credibility model for estimating the predictive risk premium.Also by using the results of the numeration analysis,this paper proves that from this model one can get the posterior distributions of the parameters dynamically and the posterior estimation of the censoring parameters in the situation that exists unknown parameters,as well as improve the precision of the numeration,which can be helpful to find the heterogeneity of the premium. 相似文献
新兴资本市场普遍存在着资产误定价金融异象.在传统金融理论无法解释的情况下,可以行为金融学的相关理论,从分析师评级出发,通过投资者情绪传导,与资产误定价三者之间建立分析逻辑.通过对2009-2015年625家上市公司第一季度数据进行面板数据回归和有调节的中介效应检验,结果发现:分析师的乐观评级及调级会引起价格向上的资产误定价扩大,价格向下的资产误定价减小;乐观评级会比悲观评级引发更大程度的资产误定价;机构投资者的调节作用不显著;分析师评级及调级对资产误定价的影响是通过投资者情绪变化作为中介传导的.根据研究结论,如能在政策层面通过加强分析师队伍管理、强化投资者教育、提高机构投资者的业务素养,就能提高分析师评级的科学性与准确性,促使投资者正确对待分析师评级信息,从而减少乃至消除资产误定价,促进资本市场健康稳定发展. 相似文献
5.
Rose D. Baker 《Journal of applied statistics》2016,43(3):387-395
We describe a model to obtain strengths and rankings of players appearing in golf's Ryder Cup. Obtaining rankings is complicated because of two reasons. First, competitors do not compete on an equal number of occasions, with some competitors appearing too infrequently for their ranking to be estimated with any degree of certainty, and second, different competitors experience different levels of volatility in results. Our approach is to assume the competitor strengths are drawn from some common distribution. For small numbers of competitors, as is the case here, we fit the model using Monte-Carlo integration. Results suggest there is very little difference between the top performing players, though Scotland's Colin Montgomerie is estimated as the strongest Ryder Cup player. 相似文献
6.
叶慧娟 《华东理工大学学报(社会科学版)》2011,26(2):83-90,116
网络游戏分级制度旨在唤醒社会对网络游戏的理性认识,增强游戏行业主体对网游产业的责任感和参与感,促进网络游戏行业的健康发展。网络游戏分级制度有助于解决确保网游行业健康有序地竞争与发展与保护作为网络游戏最大消费群体的未成年人权利免受侵害的两难命题。北美ESRB、欧洲PEGI、日本CERO的游戏分级制度实践为我们提供了比较研究和可资借鉴的范本。 相似文献
7.
Despite known risks associated with aberrant social skill development, there has been a relative dearth of literature on typical developmental changes in social skills over time. In this study, we examine systematic changes in social skills from kindergarten (typical age of 5–6 years) to third grade (typical age of 8–9 years), and focus on systematic heterogeneity across these developmental trajectories. Data came from the National Head Start—Public School Early Childhood Transition Demonstration Project (N = 6964). Mixture models provide evidence for multiple classes of individuals representing heterogeneity in the development of social skills. Classes were defined as a majority class (whose trajectories remained relatively stable over time), an increasing class (whose trajectories increased at a faster rate than the majority class), and a decreasing class (whose trajectories decreased at a faster rate than the majority class). Developmental trends accounted for a substantial proportion of the variance in social skill components. Implications and limitations of the study are discussed. 相似文献
8.
中小企业信息化评价指标体系的构建 总被引:14,自引:0,他引:14
在一个全新的信息时代,企业信息化是企业应对激烈的市场竞争的重要手段,同时也是国民经济信息化的基础.企业信息化不仅对大型企业重要,对中小企业也意义重大.构建中小企业信息化水平评价指标体系应结合中小企业的特点,本着科学、实用、定性与定量相结合、不同行业不同规模企业区别考虑等原则,采用比较分析法和专家评分法(Delphi),涵盖信息设备及软件系统装备程度、利用程度、信息使用者水平、企业信息化环境和信息化经济效益等五方面指标内容. 相似文献
9.
股票市场的有限套利:一个行为金融模型 总被引:8,自引:0,他引:8
从行为金融的角度,结合有限套利与非理性个体对股票市场的套利者收益、资产价格特征进行考察。通过引入趋势交易者,发展了有限套利模型,并得到了套利者期望收益和市场波动性的解析解。然后对较宽范围内参数的可能取值进行了模拟。结果发现,套利收益同套利者能力和个体交易者的非理性程度有明显的非线性关系,在一定的条件下,套利者不但无法稳定市场,反而会促进资产价格的波动。 相似文献
10.
Chang-Ming Hsieh 《Social indicators research》2008,87(1):127-137
This article seeks to extend Michalos’ [Social indicators research and health-related quality of life (QoL) research. Social Indicators Research, 65, 27–72, 2004] discussion on bridging social indicators research and health-related QoL (HRQoL) research through an examination
of (1) the relative importance of satisfaction with one’s own health to another common measure of QoL—Life satisfaction, and
(2) the relative importance of health in relation to other major life domains. Using data from two surveys, this article found
that individuals may perceive health as most important in relation to other major life domains but satisfaction with one’s
own health may not necessarily be the most important determining factor (in relation to satisfaction with other major life
domains) of QoL as measured by life satisfaction. These findings support Michalos’ (Social indicators research and HRQoL research.
Social Indicators Research, 65, 27–72, 2004) call for caution regarding the interpretation of research results on HRQoL since many HRQoL measures are measures
of satisfaction with one’s own health and should not be considered as measures of QoL. 相似文献