Both exposure to a novel context and associative learning induce an upregulation of AKAP150 protein in mouse hippocampus

A-kinase anchoring protein 150 (AKAP150) is a multi-enzyme signaling complex that coordinates the action of PKA, PKC, and PP2B at neuronal membranes and synapses. We measured levels of AKAP150 protein in the hippocampus 6h after training mice in a contextual fear conditioning paradigm. In contextual fear conditioning mice learn to associate a context with a footshock presentation. Mice were divided in four experimental groups with different training protocols: naive, no footshock exposure, immediate footshock exposure, and footshock 3min after exposure to the context. We found that AKAP150 protein levels were increased upon exposing mice to the novel context independent of the training protocol. However, when the animals were habituated to the experimental context, only mice that learned to associate the context with the footshock showed an upregulation of AKAP150. We suggest that upregulated levels of AKAP150 contribute to processing the exposure to a novel context and associative learning.     

Integration of social identities in the self: toward a cognitive-developmental model.

This article presents a model of social identity development and integration in the self. Classic intergroup theories (e.g., social identity theory, self-categorization theory) address the situational, short-term changes in social identities. Although these theories identify the contextual and environmental factors that explain situational changes in social identification, the intraindividual processes underlying developmental changes in social identities and their integration within the self remain to be identified. Relying on recent intergroup models as well as on developmental (i.e., neo-Piagetian) and social cognitive frameworks, this article proposes a four-stage model that explains the specific processes by which multiple social identities develop intraindividually and become integrated within the self over time. The factors that facilitate versus impede these identity change processes and the consequences associated with social identity integration are also presented.     

Prediction of longevity of volunteer service: a basic alternative proposal

A problem for many organizations is the low continuity of volunteers. Diverse theoretical models have been developed to explain sustained volunteerism, but most of these models have focused on the study of welfare volunteerism and not have verified whether their results could be generalized to other types of volunteerism. In this study, we propose a basic model to explain sustained volunteerism in any type of volunteerism. The aim of this study is to examine this basic model empirically in a sample of socio-assistential volunteers and in a sample of environmental volunteers. For this purpose, 290 volunteers completed a questionnaire and subsequently, two telephone follow-ups were carried out to determine whether the volunteers remained in the NGO one year later. The results show that the basic model offers an acceptable explanation of sustained volunteerism in the two types of volunteer samples studied, but it accounted for a low percentage of variance of the duration of service in both samples. Various relevant implications for the practical management of volunteerism in organizations are derived from theses findings.     

The role of cultural and spiritual expressions in affirming a sense of self,place, and purpose among young urban,Indigenous Australians

This article sets out to discuss the impact that urban living has had on the lives of young Indigenous people. It will seek to discover some of the problems that occur when there is a meeting of two cultures, in this case the Indigenous culture of Australian Aboriginal people and the mainstream culture that has been derived largely from west European traditions which, in turn, was born out of Western Christian perspectives. As well, it will explore the challenges faced by minority groups who live in pluralist contexts when they attempt to hand on their ways to their young people, in particular, the difficulties faced by urban Indigenous Australians who try to ensure that their young people will develop knowledge about their cultural and spiritual heritage. Finally it will examine how the rights of young Indigenous people need to be protected so that they can continue to develop their particular identity and at the same time take their place with pride and integrity in the pluralist social context that defines Australia today.

Many Australians understand that Aboriginal people have a special respect for nature. The identity we have with the land is sacred and unique. Many people are beginning to understand this more. Also there are many Australians who appreciate that Aboriginal people have a very strong sense of community. All persons matter. All of us belong and there are many more Australians who understand that we are people who celebrate together.

What I want you to know about is another special quality of my people. I believe it is most important. It is our most unique gift. It is perhaps the greatest gift we can give to our fellow Australians. In our language it is the quality called dadirri. It is inner, deep listening and quiet, still awareness.

Dadirri recognizes the deep spring inside us. We call on it and it calls to us. This is the gift that Australia is thirsting for. It is something like what you call ‘contemplation’. (Ungunmerr, 2003 Ungunmerr, Miriam‐Rose. 2003. “Dadirri—The spring within”. In Dadirri: the spring within—the spiritual art of the Aboriginal people from Australia’s Daly River region, Edited by: Farrelly, E. vii–ix. Darwin, NT, , Australia: Terry Knight and Associates.  [Google Scholar])     

A verification framework for agent programming with declarative goals

A long and lasting problem in agent research has been to close the gap between agent logics and agent programming frameworks. The main reason for this problem of establishing a link between agent logics and agent programming frameworks is identified and explained by the fact that agent programming frameworks have hardly incorporated the concept of a declarative goal. Instead, such frameworks have focused mainly on plans or goals-to-do instead of the end goals to be realised which are also called goals-to-be. In this paper, the programming language GOAL is introduced which incorporates such declarative goals. The notion of a commitment strategy—one of the main theoretical insights due to agent logics, which explains the relation between beliefs and goals—is used to construct a computational semantics for GOAL. Finally, a proof theory for proving properties of GOAL agents is introduced. Thus, the main contribution of this paper, rather than the language GOAL itself, is that we offer a complete theory of agent programming in the sense that our theory provides both for a programming framework and a programming logic for such agents. An example program is proven correct by using this programming logic.     

论存在者与本质

本文首先从逻辑学与本体论的区分入手,强调了本质概念和存在概念的本体论或实存论性质,提出了一条区别于传统思辨哲学的从经验的存在者到先验的存在者的致思路线;尔后依次从质料与形式、本质与存在、主体与偶性三个层面阐述了阿奎那的本质特殊学说和实体（单纯实体和复合实体）学说;最后则强调了作为“第一存在”的“绝对单纯性”的上帝的本体论地位和形而上学意义。     

The relationships among asymmetry in task dependence, perceived helping behavior, and trust

Social relations analyses involving 132 working relationships among 60 individuals from 29 teams revealed that an increase in a team member's task dependence on another team member was associated with higher levels of perceived help from and interpersonal trust in that specific team member, provided the other member was highly task dependent on the focal member. The degree to which an actor perceived a relationship with a partner to be helpful partially mediated the relationship between task dependence and trust. These findings highlight the importance of attending to asymmetries in task dependence and provide valuable insights into mechanisms that can explain the development of trust in organizational work teams.     

The tripartite model for assessing symptoms of anxiety and depression: psychometrics of the Dutch version of the mood and anxiety symptoms questionnaire

AIM: The tripartite model conceptualizes symptoms of depression and anxiety in three groups: low positive affect and anhedonia, which is specific to depression, somatic arousal, which is unique to anxiety, and nonspecific general distress. The Mood and Anxiety Symptoms Questionnaire (MASQ) was developed to measure these symptom domains. This study reports on the psychometric properties of the Dutch translation of the MASQ. METHOD: The questionnaire was completed by a population-based sample and by patients with anxiety and/or mood disorders. Scores of these respondent groups were compared to assess the discriminant validity of the MASQ and evaluate the appropriateness of the tripartite model. RESULTS: The psychometric properties of the translated MASQ were highly satisfactory. In accordance with the model, we found the MASQ to comprise three main scales, which discriminate well between subgroups of patients with mood and anxiety disorders. DISCUSSION: Overall, like the English version the Dutch translation of the instrument appears to be a reliable and valid measure of symptoms of depression and anxiety, conceptualized as comprising three groups of symptoms. The Dutch MASQ is better able to distinguish unique aspects of mood and anxiety disorders than other self-report instruments.