二语情感抽象概念加工的具身认知研究

基于具身认知框架下的概念隐喻理论，对中国英语学习者抽象情感词加工的具身认知进行了实证研究。结果发现:（1）二语情感抽象概念存在“积极在上，消极在下”的垂直空间隐喻映射；（2）不同水平组对二语抽象情感词的加工成本存在不对称性；（3）中国英语学习者对不同效价的抽象情感词加工成本趋异。实验结果证明了情感抽象概念能够通过隐喻的方式建立与感知运动信息的联系，情感模拟对二语抽象情感词的加工具有促进作用。     

Recognizing Structural Nonidentifiability: When Experiments Do Not Provide Information About Important Parameters and Misleading Models Can Still Have Great Fit

In the quest to model various phenomena, the foundational importance of parameter identifiability to sound statistical modeling may be less well appreciated than goodness of fit. Identifiability concerns the quality of objective information in data to facilitate estimation of a parameter, while nonidentifiability means there are parameters in a model about which the data provide little or no information. In purely empirical models where parsimonious good fit is the chief concern, nonidentifiability (or parameter redundancy) implies overparameterization of the model. In contrast, nonidentifiability implies underinformativeness of available data in mechanistically derived models where parameters are interpreted as having strong practical meaning. This study explores illustrative examples of structural nonidentifiability and its implications using mechanistically derived models (for repeated presence/absence analyses and dose–response of Escherichia coli O157:H7 and norovirus) drawn from quantitative microbial risk assessment. Following algebraic proof of nonidentifiability in these examples, profile likelihood analysis and Bayesian Markov Chain Monte Carlo with uniform priors are illustrated as tools to help detect model parameters that are not strongly identifiable. It is shown that identifiability should be considered during experimental design and ethics approval to ensure generated data can yield strong objective information about all mechanistic parameters of interest. When Bayesian methods are applied to a nonidentifiable model, the subjective prior effectively fabricates information about any parameters about which the data carry no objective information. Finally, structural nonidentifiability can lead to spurious models that fit data well but can yield severely flawed inferences and predictions when they are interpreted or used inappropriately.     

清人王源《左传评》重“奇”之义蕴抉微

"奇"是清代实学代表人物王源评点《左传》的关键词,在内容、形式评点中皆有体现。借助《左传》具体文本的评点,通过同类相联、正反对举的反复申述,王源将"奇"之内涵赋予"变""活""正"等多重意义,将传统的奇文观念"美文化",以奇诡、辞达、自然为奇文,使"奇"具备了多重文学批评的功能。身处易代,酷爱兵法,好奇人奇事奇文,一生坎壈,皆为王源尚奇批评生成之根源。对明清八股时文取士的不屑,对清初文坛亦步亦趋效法唐宋八大家的不满,使其《左传》奇文评点具备了不同时俗的意义,浸润了明确的针砭时弊与经世致用的色彩。王源《左传》评点之重"奇",在一定程度上彰显出中国古代文论的典型性特征。对此进行考察,可望为揭橥评点的阐释范式、话语体系等提供可行性研究理路。     

Optimization problems for consecutive-2-out-of-n:G system

Abstract

This paper considers the optimization problems for a consecutive-2-out-of-n:G system where n is considered to be fixed or random. When the number of components is constant, the optimal number of components and the optimal replacement time are discussed by minimizing the expected cost rates. Furthermore, we focus on the above discussions again when n is a random variable. We give an approximate value of MTTF and propose the preventive replacement policy, respectively.     

Creating a positive emotional culture: Effect of internal communication and impact on employee supportive behaviors

The study surveyed 506 employees in the United States to test the effect of internal communication (i.e., corporate-level symmetrical and leadership-level responsive communications) on fostering a positive emotional culture characterized by companionate love, joy, pride, and gratitude. In addition, we tested the interplay between corporate internal communication and a positive emotional culture and its influence on supportive employee behaviors, specifically, organizational citizenship behavior (OCB) and employee advocacy. Results indicated that symmetrical communication and responsive leadership communication cultivated a positive emotional culture in organizations. Such culture also fostered employee OCB and advocacy. Moreover, corporate symmetrical communication directly and positively influenced employee OCB. Finally, this study found that employee OCB positively affected employee advocacy. The theoretical and practical implications of the findings for public relations scholars and practitioners were discussed.     

汉语双字词常模特征跨词性对比研究

汉语中不同词性词有不同常模特征规律。名词的具体性、意象性、语义透明度最高，但笔画数最少；动词的词频最高、习得年龄最晚,但感官经验度最低；形容词的熟悉性、主观词频和情感经验度最高，但具体性最低。同时，具体性、意象性和感官经验度之间的相互关联只存在于名词和形容词中。13个常模特征可以归为频率、语义、视觉复杂性和词义数四个公共因子，但各因子所主要代表的变量情况在不同词性词之间有相似，亦有不同。另外，动词和形容词之间的相似性高于它们分别与名词之间的相似性程度，习得年龄、情感经验度、意象性和主观词义数最能把名词与另外两种词性区分开来。