高阶项目反应模型的发展与应用

在测量具有层阶结构的潜质时, 标准项目反应模型对项目参数估计和能力参数估计都具有较低的效率, 多维项目反应模型虽然在估计第一阶潜质时具有高效性, 但没有考虑到潜质层阶的情况, 所以它不适合用来处理具有层阶结构的潜质; 而高阶项目反应模型在处理这种具有层阶结构的潜质时, 不仅能够高效准确地对项目参数和能力参数进行估计, 而且还能同时获得高阶潜质与低阶潜质。目前存在的高阶项目反应模型有高阶DINA模型、高阶双参数正态肩型层阶模型、高阶逻辑斯蒂模型、多级评分的高阶项目反应模型和高阶题组模型。未来对高阶项目反应模型的研究方向应注意多水平高阶项目反应模型、项目内多维情况下的高阶项目反应模型以及高阶认知诊断模型。     

宗教社会作用二重性与党的宗教工作问题研究

宗教的社会作用问题,是马克思主义宗教观的一个重要理论观点,是正确认识和对待宗教问题的关键点之一;中国共产党提出的社会主义社会历史时期宗教社会作用两重性的重要论述,是对马克思主义宗教观关于宗教社会作用问题的丰富和发展,它与正确认识、对待社会主义条件下的宗教问题和全面做好党的宗教工作息息相关;在宗教工作实践中,我们应创造性地运用和发展这一理论观点,为构建和谐社会、全面实现建设小康和创新型国家的战略决策,作出应有的贡献。     

A base logic for default reasoning

Based on a close study of benchmark examples in default reasoning, such as Nixon Diamond, Penguin Principle, etc., this paper provides an in depth analysis of the basic features of default reasoning. We formalize default inferences based on Modus Ponens for Default Implication, and mark the distinction between “local inferences” (to infer a conclusion from a subset of given premises) and “global inferences” (to infer a conclusion from the entire set of given premises). These conceptual analyses are captured by a formal semantics that is built upon the set-selection function technique. A minimal logic system M of default reasoning that accommodates Modus Ponens for Default Implication and suitable for local inferences is proposed, and its soundness is proved. __________ Translated from Zhexue Yanjiu 哲学研究 (Philosophical Studies), 2003 (special issue) by Ye Feng     

大学生的角色期望研究

采用自编的大学生角色期望调查问卷和大学生人格健康调查表(UPI),对650名1-3年级大学生进行测试。结果表明:1、大学生角色期望集中体现在9个方面:整合性期望、就业性期望、志向性期望、评价性期望、学业性期望、恋爱性期望、悖离性期望、环境性期望、独立性期望;2、三个年级在角色期望多数因子上的平均分表现出"V"形结构,各年级之间存在显著差异(p<.05);3、就业性期望、学业性期望、独立性期望存在显著的性别差异,女生在前两个因子上的平均分明显高于男生,在后一个因子上的平均分明显低于男生;4、心理健康组在整合性期望因子的平均分显著高于心理不健康组(p<.05),在悖离性期望因子的平均分极显著低于心理不健康组(p<.01)。     

Unitization mitigates interference by intrinsic negative emotion in familiarity and recollection of associative memory: Electrophysiological evidence

Emotion exerts varied influences on memory. While task-relevant item memory is often enhanced by emotion, associative memory is generally impaired. Unitization is known to improve associative memory, but its effects and mechanisms in protecting associative memory from emotional interference are rather obscure. The current study investigated associative memory by employing experimental manipulation of unitization (vs. nonunitization) encoding strategy and stimulus emotion (neutral, intrinsic negative, and extrinsic negative), combined with event-related potential (ERP) signatures of familiarity (FN400 old/new effects) and recollection (parietal late positive component/LPC old/new effects) in memory recognition. Both behavioral and ERP indices of associative recognition from the nonunitization group confirmed emotional interference in associative memory. Importantly, it was primarily intrinsic (vs. extrinsic) emotion that impeded associative memory. Unitization encoding improved memory performance in general, accompanied by enhanced recollection process and induction of familiarity process, which is typically not involved in associative memory recognition and was indeed absent in the nonunitization group. Importantly, unitization helped to preserve behavioral performance (specifically, response speed though not recognition strength) from interference by intrinsic emotion while largely reversed the detriment of intrinsic emotion on ERP indices of familiarity and recollection processes. Interestingly, a synergy between intrinsic emotion and unitization encoding was observed, which could underpin the facilitation of familiarity process in associative recognition of emotional pairs. Overall, current findings highlight interference by intrinsic emotion in associative memory, which is nonetheless responsive to mitigation by unitization encoding.     

Gender and neural substrates subserving implicit processing of death-related linguistic cues

Our recent functional magnetic resonance imaging study revealed decreased activities in the anterior cingulate cortex (ACC) and bilateral insula for women during the implicit processing of death-related linguistic cues. Current work tested whether aforementioned activities are common for women and men and explored potential gender differences. We scanned twenty males while they performed a color-naming task on death-related, negative-valence, and neutral-valence words. Whole-brain analysis showed increased left frontal activity and decreased activities in the ACC and bilateral insula to death-related versus negative-valence words for both men and women. However, relative to women, men showed greater increased activity in the left middle frontal cortex and decreased activity in the right cerebellum to death-related versus negative-valence words. The results suggest, while implicit processing of death-related words is characterized with weakened sense of oneself for both women and men, men may recruit stronger cognitive regulation of emotion than women.     

Identification of biological neurons using adaptive observers

This paper is to investigate the use of adaptive observers for the modeling of biological neurons and networks. Assuming that a neuron can be modeled as a continuous-time nonlinear system, it is possible to determine its unknown parameters using adaptive observer, based on the concept of adaptive synchronization. The same technique can be extended for the identification of an entire biological neural network. Some conventional observer designs are studied in this paper and satisfactory results are obtained, yet with some restrictions. To further extend the applicability of adaptive observers for the modeling process, a new design is suggested. It is based on a combination of linear feedback control approach and the dynamical minimization algorithm. The effectiveness of the designed adaptive observer is confirmed with simulations.     

资本逻辑语境中的"伦理学贫困"及学者使命

资本是现代社会的基础和根据,而资本逻辑则成为现代世界的核心逻辑.由资本逻辑及其霸权统治导致的当代道德困境成为当代伦理学难以消解的生命之痛,由此呈现出其在现实生活面前的"贫困".因此,在检视并创新当代伦理学的过程中,我们不能丧失资本逻辑的审视维度,这特别有赖于学者自觉立足于当代世界的资本性质,担负起探求伦理学知识真理和守护社会道德价值的历史重任.     

Consumer responses to brand elimination: An attributional perspective

While research on innovation and new product development abounds in the literature, studies on firms deleting brands from their portfolio are virtually non-existent. This paper provides a pioneering examination of how brand elimination might influence consumer evaluations of the firm. As compared to a widely-held belief that brand elimination would adversely affect firm image, we propose that in situations where brand elimination can be viewed as the firm's effort to improve performance, consumers will rate this action favorably, with concomitant outcomes relating to firm evaluation. These ideas are supported in three studies. Study 1 finds that elimination targeting a weak (vs. strong) brand is more likely to be associated with eliminate-to-improve attributions, and consequently, more favorable evaluations. Study 2 shows that explanations provided by the firm (as against explanations generated internally by the consumers) help consumers make positive attributions for elimination targeting a strong brand, but lower evaluations when a weak brand is being eliminated. Study 3 establishes that loyal consumers are more likely to assess the applicability of an ‘eliminate-to-improve’ attribution and give favorable evaluations only when the eliminated brand is weak. Non-loyal consumers in general respond favorably to the elimination, regardless of brand strength. Future directions for brand elimination research are discussed.