A bio-inspired model of behavior considering decision-making and planning,spatial attention and basic motor commands processes

Cognitive architectures (CA) are an IA approach to implement computer systems with human-like behavior. Fundamental exhibited human capabilities include planning and decision-making. In that regard, numerous AI systems successfully exhibit human-like behavior but are limited to either achieving specific objectives or are restrained to too heavily constrained environments, which makes them unsuitable in the presence of unforeseen situations where autonomy is required. To try to alleviate the problem, we present a bio-inspired computational model to solve the autonomous navigation problem of a computational entity in a controlled context. This proposal is the result of the interaction between planning and decision-making, spatial attention and the motor cognitive functions. The proposed model is based on neuroscientific evidence concerning the involved cognitive functions and is part of a more general cognitive architecture. In the case study developed to validate our idea, we can see that the processes previously identified play an important role to accomplish spatial navigation. In the case study presented, an agent achieves the navigation over an unexplored maze from an initial to a final position successfully. The reunited results motivate us to continue improving our model considering attentional information to influence the agent’s motor behavior.     

行为免疫系统理论及其研究:新视野下的再考察

行为免疫系统理论认为, 为了应对流行病威胁, 人类进化出了一套特殊的行为反应倾向, 包括对疾病线索的警觉、厌恶, 对健康配偶的偏好, 对外群体的排斥, 对集体主义的推崇等。已有研究主要从宏观(群体)和微观(个体)两个水平开展, 虽然有大量研究结果支持该理论, 但也存在不少不一致甚至相反的发现。研究方法、理论基础和现代适用性等方面的不足可能是出现这种情况的原因。未来研究需克服上述问题, 并进一步拓展该理论的研究内容, 检验理论和相关研究的边界, 探讨行为免疫背后的生理机制等。     

建言采纳如何促进员工建言：基于目标自组织视角的整合机制

文章探讨了领导者建言采纳促进员工建言的理论基础、作用机制及其对发展建言研究的意义。通过引入个体心理的自组织目标系统理论, 整合了员工建言研究的动机视角和认知视角, 构建了建言的目标自组织观点。在此基础上, 分析和检验了工作意义感和建言效能感在领导者建言采纳促进员工建言的关系中所起的中介作用。通过问卷调查收集了来自73位领导者与236位员工的纵向数据, 结果显示：(1)领导者的建言采纳对员工的促进性/抑制性建言均具有显著的促进作用; (2)工作意义感和建言效能感在领导者建言采纳与员工建言行为的关系中起到完全中介作用。研究结果发展了对建言行为形成机制的认识, 促进了建言研究的理论发展, 并对管理实践有着积极的启示。     

Identity,ideology, and personality: Examining moderators of affective polarization in New Zealand

Affective polarization (i.e., differences in evaluations of the in-party and out-party) has important implications for political outcomes including civic engagement and partisan-motivated attitudes and behaviours. In this study, we add to the burgeoning literature on affective polarization by examining moderators of the effect of in-party support on out-party opposition across the three main political parties in New Zealand. Using a large national probability sample of adults (N = 19,078), we assessed the effects of social demographics, Big-Five personality traits, liberal-conservative ideology, political identity centrality, and weekly news exposure on the relationship between in-party and out-party support. Results show political identity centrality is the strongest and most consistent moderator. The effects of some other moderators (e.g., personality, news exposure) are party-specific.     

Role of female aggression in prevention of infanticidal behavior in male common voles,Microtus arvalis (Pallas, 1779)

Infanticidal behavior of male common voles (Microtus arvalis) was investigated in relation to the age of unfamiliar pups. Sires from 18 pairs were removed after parturition of their offspring and replaced by unfamiliar males at different ages of the neonates. In group 1, containing six females with their offspring, the new male was introduced into the females' cages on day 1 after the parturition. In group 2 the new male was introduced on day 5 after parturition and in group 3 on day 9 after parturition. The male was removed after 3 days and the neonates recounted. Male common voles killed up to 100% of the neonates in litters containing neonates younger than 9 days by rapid bites to the head of the neonates (groups 1 and 2, mortality rates of 0.86 and 0.38). However, with older pups, a mortality rate of 0.06 was observed while 33% of the intruder males showed signs of injuries (group 3). These findings show that infanticidal behavior of male common voles represents one factor of pup mortality. The results are discussed in relation to changes in the degree of maternal aggression and in the context of the social system of the common vole for solving the conflict between postpartum estrous mating and infanticidal behavior of male common voles. Aggr. Behav. 23:293–298, 1997. © 1997 Wiley-Liss, Inc.     

阅读障碍儿童语音提取

儿童在提取短时记忆系统的语音信息时,往往会造成部分信息的丢失和回忆量的下降,这种信息丢失量的多少与中央执行系统功能有着密切的联系。为了考察阅读障碍儿童的语音提取特点,挖掘他们记忆失败的本质,使用自由回忆和再认两种任务,考察阅读障碍儿童在无意义音节和汉语词汇上的提取特点,结果发现：（1）阅读障碍儿童在语音提取时,丢失的信息率要显著多于正常儿童,这种丢失可能是由于他们落后的中央执行功能所致;（2）阅读障碍儿童单纯的语音保持能力正常,但不擅长利用语义编码来促进短时记忆效果,而正常儿童却能够较好地利用语义线索。     

Antipredator behavior of Swiss-Webster mice in a visible burrow system

Swiss-Webster mice living in a visible burrow system (VBS) reacted to presentation of a live cat in the surface area of the VBS by retreat to the burrows and reductions in nondefensive behaviors such as eating and drinking. Live eat-exposed subjects remained in the burrows 14 hr or more, while subjects exposed to a toy (plush) cat prior to live cat exposure reemerged almost immediately and made many contacts with the toy cat. However, subjects exposed first to the cat and later to a toy cat showed intermediate surface reemergence times and cat contacts during toy cat tests, indicating strong sensitization effects of prior live cat exposure. Previous studies indicated that rats in this situation show retreat to the burrows, surface avoidance, and reduction in nondefensive behaviors. The mouse pattern was similar, with the notable exception that in the first 5min block after cat presentation, mice rapidly alternated retreat to the burrow chambers with reappearance in the tunnel segment near the surface, to scan the surface visually and sniff. Movement during this time block involved a stretch attend posture characteristic also of risk assessment activities in rats. Such visual and olfactory inspection of the cat is not seen in rats in the VBS. This difference may be related to the finding that rats, but not mice, emit ultrasonic “alarm cries” during and after cat exposure. © 1995 Wiley-Liss, Inc.     

A new fuzzy multicriteria evaluation method for group site selection in GIS

Multiple criteria group site selection problems involve a group of individuals evaluating a set of alternative sites on the basis of multiple criteria. This paper presents an application of a new fuzzy algorithm for finding and exploring potential solutions to these problems in a raster Geographical Information System (GIS) environment. Linguistic assessments from decision‐makers are represented as triangular fuzzy numbers (TFN's), which are adjusted for uncertainty in the source data and their relationship to suitability by using an approach based on type‐2 fuzzy sets. The first aggregation of inputs is a compensatory one based on fuzzy multiattribute decision‐making (MADM) theory. An adjusted aggregation then factors in conflicts, risks and uncertainties to enable a variety of compensatory and non‐compensatory outcomes to be generated based on decision‐maker preferences. The algorithm was implemented in ArcView GIS as part of an ongoing collaborative project with Brisbane Airport. This paper outlines the fuzzy algorithm and its use in site selection for a recycling facility on the Brisbane Airport site. Copyright © 2005 John Wiley & Sons, Ltd.     

药物成瘾行为的脑机制及其研究进展

药物成瘾是脑内相关核团和细胞在药物反复作用下发生适应性变化的时间依赖过程。成瘾的适应性学说从ｃＡＭＰ水平调节、阿片和多巴胺受体与Ｇ蛋白家族耦联等方面,为成瘾形成机制提供了最基本的生物学范畴的理论解释。实验证据在一定程度上揭示了从给药到耐受、敏感、依赖,再到撤药症状的生物变化过程。然而,阐明从急性给药到特殊脑区持续性的适应机制仍然是当前成瘾研究最具挑战性的目标之一。