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651.
Prashant K. Tarun Victoria C. P. Chen H. W. Corley 《Journal of Multi-Criteria Decision Analysis》2014,21(3-4):197-208
This paper focuses on the divergence behaviour of the successive geometric mean (SGM) method used to generate pairwise comparison matrices while solving a multiple stage, multiple objective (MSMO) optimization problem. The SGM method can be used in the matrix generation phase of our three‐phase methodology to obtain pairwise comparison matrix at each stage of an MSMO optimization problem, which can be subsequently used to obtain the weight vector at the corresponding stage. The weight vectors across the stages can be used to convert an MSMO problem into a multiple stage, single objective (MSSO) problem, which can be solved using dynamic programming‐based approaches. To obtain a practical set of non‐dominated solutions (also referred to as Pareto optimal solutions) to the MSMO optimization problem, it is important to use a solution approach that has the potential to allow for a better exploration of the Pareto optimal solution space. To accomplish a more exhaustive exploration of the Pareto optimal solution space, the weight vectors that are used to scalarize the MSMO optimization problem into its corresponding MSSO optimization problem should vary across the stages. Distinct weight vectors across the stages are tied directly with distinct pairwise comparison matrices across the stages. A pairwise comparison matrix generation method is said to diverge if it can generate distinct pairwise comparison matrices across the stages of an MSMO optimization problem. In this paper, we demonstrate the SGM method's divergence behaviour when the three‐phase methodology is used in conjunction with an augmented high‐dimensional, continuous‐state stochastic dynamic programming method to solve a large‐scale MSMO optimization problem. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
652.
A key challenge for positive psychology interventions is promoting sustained engagement to improve long-term outcomes. One way to increase engagement is to introduce variety to reduce hedonic adaptation. Here, we propose supplementing intervention prompts with items from a person’s social media archive to add variety. Through a one-week pilot study of six positive psychology activities via a Facebook application, we explore whether Facebook content is useful to keep people engaged in activities and what attributes of content make it most useful. A total of 260 participants used our application, and analysis of usage showed that displaying content is engaging. By looking at which content was marked as useful by participants, we find that useful content is in itself meaningful and engaging (photos, longer texts, and content about close friends). We also find that certain intervention activities are more engaging and better suited for making use of Facebook content than others. 相似文献
653.
Todd M. Thrash Emil G. Moldovan Victoria C. Oleynick Laura A. Maruskin 《Social and Personality Psychology Compass》2014,8(9):495-510
Inspiration is a concept of longstanding interest in diverse areas of academia, but it has only recently become the subject of rigorous scientific investigation. In this article, we review the emerging scientific literature on inspiration, with a focus on both theory and findings. First, we present a general definition of inspiration based on an integrative literature review, and we outline approaches to differentiating the general inspiration construct into specific types. Second, we review the literature on construct validity. Third, we present substantive theory and findings, with an emphasis on the role of inspiration in promoting attainment of elusive goods, such as creativity, productivity, and happiness. Finally, we respond to frequent questions and misconceptions about inspiration, and we offer recommendations about how to promote inspiration in others or oneself. 相似文献
654.
系列再生法是一种用来探讨文化动态中的社会心理过程之实验方法。所谓文化动态是指文化如何形成、维持,以及如何随着时间而变化。此方法特别有利于以下研究:文化讯息是如何透过社会网络被传播、什么类型的文化讯息较可能透过社会网络被传播,以及文化讯息由一个人传到另一个人的过程中,是如何转化的。本文概述了系列再生实验方法的优点及缺点,讨论此方法的理论架构,并举例展诉如何有系统地应用此法,做有关文化刻板印象的研究。最后,本文讨论未来的研究方向,如文化动态的潜在文化差异,以及文化动态与社会网络之间的互动过程。 相似文献
655.
Patricia E. Brosseau-Liard Victoria Savalei Libo Li 《Multivariate behavioral research》2013,48(6):904-930
The root mean square error of approximation (RMSEA) is a popular fit index in structural equation modeling (SEM). Typically, RMSEA is computed using the normal theory maximum likelihood (ML) fit function. Under nonnormality, the uncorrected sample estimate of the ML RMSEA tends to be inflated. Two robust corrections to the sample ML RMSEA have been proposed, but the theoretical and empirical differences between the 2 have not been explored. In this article, we investigate the behavior of these 2 corrections. We show that the virtually unknown correction due to Li and Bentler (2006), which we label the sample-corrected robust RMSEA, is a consistent estimate of the population ML RMSEA yet drastically reduces bias due to nonnormality in small samples. On the other hand, the popular correction implemented in several SEM programs, which we label the population-corrected robust RMSEA, has poor properties because it estimates a quantity that decreases with increasing nonnormality. We recommend the use of the sample-corrected RMSEA with nonnormal data and its wide implementation. 相似文献
656.
657.
As levels of obesity continue to rise worldwide so do the number of public health campaigns designed to help address this problem with advice and information on how to stabilize or decrease weight. However, few studies have explored the influence of visual images, and specifically photographs, in weight-related health materials despite their widespread use in publications and online. We carried out qualitative individual telephone interviews with eight women who were actively engaged in managing their weight. They viewed a series of photographs of slim and overweight women demonstrating healthy behaviors such as engaging in physical activity or reading a food label. Responses were analyzed using Interpretative Phenomenological Analysis. The two core themes that emerged were the motivating/de-motivating effect of body size representation on health behavior intentions, and the social implications of being overweight. Participants liked and appeared motivated by the images of larger women, actively seeking out social comparisons. Implications of these findings in the development of health promotion messages are discussed. 相似文献
658.
Naomi J Hackworth Victoria E Hamilton Susan M Moore Elisabeth A Northam Zvezdana Bucalo Fergus J Cameron 《Australian psychologist》2013,48(5):360-369
The purpose of this study was to explore the psychosocial predictors of diabetes self‐care (adherence to care regimes), metabolic control (glycated haemoglobin), and mental health among rural‐ and urban‐dwelling youth with type 1 diabetes. One hundred and twenty three adolescents/young adults (aged 13?25 years, mean = 16 years, standard deviation = 3.8 years) with type 1 diabetes, 50 males and 73 females, completed questionnaires reporting on diabetes self‐care, metabolic control, mental health (negative affect, quality of life), risk‐taking behaviours and attitudes, diabetes self‐efficacy, community engagement, and perceived social support. No rural/urban differences were detected on key predictors or outcome variables. Structural equation modelling revealed that high diabetes self‐efficacy, lower risk behaviour, and more conservative attitudes to risk taking predicted better diabetes self‐care, which in turn predicted better metabolic control and mental health. Social support and engagement in community activities did not influence diabetes self‐care. The study has significance because both diabetes self‐efficacy and propensity towards risk behaviour are potential targets for educational and counselling interventions designed to improve diabetes self‐care regimes and resultant metabolic and mental health outcomes. 相似文献
659.
Mimi McEvoy Victoria Gorski Deborah Swiderski Elizabeth Alderman 《Journal of religion and health》2013,52(4):1066-1072
Teaching about spirituality in medical school training is lacking. Spirituality is a dimension of humanity that can put experiences of health and illness into a meaningful context. Medical students might benefit from understanding how spirituality is an important element in learning to care for patients. Spirituality also provides a context for medical students to explore their own motivations for doctoring. This article describes a longitudinal senior elective course at the end of their medical school training to delve into matters of religion/spirituality surrounding patient care. The authors pose their own perspectives on what both students and faculty gained from the experience. 相似文献
660.
Gloria Dada Guillem Feixas Victoria Compañ Adrián Montesano 《Journal of constructivist psychology》2013,26(1):70-89
The aim of this study is to identify cognitive variables that predict disordered eating attitudes in a nonclinical sample composed of 50 female university students. Repertory grid technique was used to assess cognitive features of self-construing and cognitive conflicts. Drive for Thinness and Body Dissatisfaction scales from the Eating Disorder Inventory–2 were used as dependent variables, as previous studies suggested that high scores on these scales are associated with the risk of developing or aggravating eating syndromes. Results suggest that drive for thinness can be associated with cognitive conflicts, whereas body dissatisfaction may be higher for those who construct themselves as inadequate and similar to others. In addition, both dependent variables were predicted by being younger and having a higher body mass index. 相似文献