30,605 research outputs found

    Thermal Perception in Mild Climate: Adaptive Thermal Models for Schools

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    A comprehensive assessment of indoor environmental conditions is performed on a representative sample of classrooms in schools across southern Spain (Mediterranean climate) to evaluate the thermal comfort level, thermal perception and preference, and the relationship with HVAC systems, with a comparison of seasons and personal clothing. Almost fifty classrooms were studied and around one thousand pool-surveys distributed among their occupants, aged 12 to 17. These measurements were performed during spring, autumn, and winter, considered the most representative periods of use for schools. A new proposed protocol has been developed for the collection and subsequent analysis of data, applying thermal comfort indicators and using the most frequent predictive models, rational (RTC) and adaptive (ATC), for comparison. Cooling is not provided in any of the rooms and natural ventilation is found in most of the spaces during midseasons. Despite the existence of a general heating service in almost all classrooms in the cold period, the use of mechanical ventilation is limited. Heating did not usually provide standard set-point temperatures. However, this did not lead to widespread complaints, as occupants perceive the thermal environment as neutral—varying greatly between users—and show a preference for slightly colder environments. Comparison of these thermal comfort votes and the thermal comfort indicators used showed a better fit of thermal preference over thermal sensation and more reliable results when using regional ATC indicators than the ASHRAE adaptive model. This highlights the significance of inhabitants’ actual thermal perception. These findings provide useful insight for a more accurate design of this type of building, as well as a suitable tool for the improvement of existing spaces, improving the conditions for both comfort and wellbeing in these spaces, as well as providing a better fit of energy use for actual comfort conditions

    Combining causal model and focus group discussions experiences learned from a socio-anthropological research on the differing perceptions of caretakers and health professionals on children's health (Bolivia/Peru)

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    The paper discusses the utility of constructing causal models in focus groups. This was experienced as a complement to an in-depth ethnographic research on the differing perceptions of caretakers and health professionals on child's growth and development in Peru and Bolivia. The rational, advantages, difficulties and necessary adaptations of combining the two techniques are discussed on the basis of concrete examples. Authors conclude that the building of a causal model in a focus group session can be useful in comparing lay etiologies of diseases as perceived by different categories of caretakers and health professionals and in identifying specific health risks faced by children. Causal model building in a focus group can help renew discussions and participants'interest but its use is only justified when the study concerns the perception of the causality of a given phenomenon

    Relationship of consistency in self-perception to judgement confidence

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    Thesis (Ph.D.)--Boston UniversityThis stuay is an investigation of interrelationships between consistency in self-perception and ju4gment confidence. Consistency in self-perception is defined as a oerrelation between two Q-sorts and is conceptualized as stability of self-perception over time as a function of the self-regarding attitude. Judgment confidence is an aspect of self-confidence which is also associated with the self-regarding attitude. Judgement confidence is defined as certainty expressed in judging criminality from photographic material. The general purpose of this investigation is to test the hypothesis that consistency in self-perception is positively related to judgment confidence. The relationship is assumed to be dependent upon the self-regarding attitude

    Are we predisposed to behave securely? Influence of risk disposition on individual security behaviors

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    Employees continue to be the weak link in organizational security management and efforts to improve the security of employee behaviors have not been as effective as hoped. Researchers contend that security-related decision making is primarily based on risk perception. There is also a belief that, if changed, this could improve security-related compliance. The extant research has primarily focused on applying theories that assume rational decision making e.g. protection motivation and deterrence theories. This work presumes we can influence employees towards compliance with information security policies and by means of fear appeals and threatened sanctions. However, it is now becoming clear that security-related decision making is complex and nuanced, not a simple carrot- and stick-related situation. Dispositional and situational factors interact and interplay to influence security decisions. In this paper, we present a model that positions psychological disposition of individuals in terms of risk tolerance vs. risk aversion and proposes research to explore how this factor influences security behaviors. We propose a model that acknowledges the impact of employees' individual dispositional risk propensity as well as their situational risk perceptions on security-related decisions. It is crucial to understand this decision-making phenomenon as a foundation for designing effective interventions to reduce such risk taking. We conclude by offering suggestions for further research.</p

    RELATIONSHIP BETWEEN PERSONALITY AND VALUE STRUCTURE

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    Humankind has been interested in the study of individual differences throughout recorded history. Plato discussed the issue of individual variations in aptitudes and suggested having tests for selecting those persons most suited for the military, artisans and rulers (Tyler, 1965). Hippocrates proposed a two-fold classification system of body builds which he called ”habitus apoplecticus” and ”habitus phthisicus” (Tyler, 1965). The nineteenth century German astronomer, Bessel, discovered discrepancies among individuals in recording the time of the passage of stars across the meridian at the Royal Observatory at Greenwich. This source of error, due to individual differences, became known as the ”personal equation (Murphy & Kovach, 1972). The founder of modern experimental psychology, Wilhelm Wundt, was strongly interested in physiological variations and developed various indices of human differences in sensation and perception (Sheridan, 1971). The field of psychological studies” (Koch, 1976) has been vitally concerned with individual differences since its inception including variations in intelligence, achievement, aptitude, creativity, interests, cognitive style, personality and values. It is these latter two areas and the implicit relationship between them which have specific interest for this investigator

    A study of the relationship of certain innate capacities to success in football

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    Thesis (Ed.M.)--Boston Universit

    La rappresentazione del rapporto tra utenti e sistema sanitario: I modelli culturali dei medici di medicina generale - The representation of the relationship between users and healthcare system: Cultural models of general practitioners

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    The present research study explores the emotional and symbolic representation of the Italian healthcare system and specifically of general medical services reported by a group of Italian general practitioners. General medicine is recently affected by a structural change which could be sustained also by a cultural revolution, however this revolution seems to be oriented to expected values without a clear methodology which promotes and accompanies this cultural change. The present study deals with the lack of practices due to these unrealized expected values and assumes that for intervening it is necessary knowing the existing culture before thinking to change it. Interviews to 36 general practitioners were analyzed by Emotional Text Analysis (AET). Results highlight a factorial space characterized by five clusters. According to respondents’ perspective, healthcare problems refer to two large issues characterized by powerlessness of general practitioners to intervene. On the one hand, there is health emergency, dealt with by first aid and emergency medicine. On the other hand, there is chronicity, especially affecting the elderly, which is dealt with by other workers (nurses, private family assistants, social workers) who care patients at home and replace physicians. The general practitioners’ work is difficult because of many different reasons; but the central theme is the lack of absolute power – based on morality and consciousness – which leads to the perception of catastrophic consequences for medical profession and the physician-patient relationship. Often, general practitioners are in their offices and are not able to go to patients’ home, therefore they cannot create care relationships based on trust and dependence which allow useful and trustworthy interventions. In sum, the core theme emerging from data refers to the general practitioners’ perceived lack of personal and trust-based relationships with patients

    Physical and Managed Risk of Nuclear Waste

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    The authors describe their work on the perceived risk of nuclear waste in Sweden. Three levels of waste were studied, and comparisons between the perceptions of the public, politicians and nuclear experts are made
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