17,943 research outputs found

    A NOTE ON COMONOTONICITY AND POSITIVITY OF THE CONTROL COMPONENTS OF DECOUPLED QUADRATIC FBSDE

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    In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio

    Telephone surveys using mobile phones: an analysis of response rates, survey procedures and respondents' characteristics

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    Telephone surveying has become the major mode of data collection in the sample survey field since the mid 1980s; presently other modes of advanced telecommunication such as mobile phones are fast becoming important supplements and even competitors to the fixed telephones. This paper uses a nationwide dual frame survey of fixed and mobile phone numbers to examine the potential of mobile phones for survey work, the methodological implications of their use and the differences to fixed phones surveys

    Willingness to pay for environmental quality: The effects of pro-environmental behavior, perceived behavior control, environmental activism, and educational level

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    Environmental quality is one of the major concerns in contemporary societies. The main goal of this research is to investigate citizens’ willingness to pay for environmental quality and whether this propensity differs in line with education level. Structural equation modeling is used to explore the associations between several constructs; specifically, a multigroup analysis is conducted to assess the invariance of two educational level segments. Results suggest that willingness to pay more for environmental quality is positively associated with perceived behavior control and environmental activism. Pro-environmental behavior does not impact willingness to pay for environmental quality but is positively related to perceived behavior control and environmental activism. The relationships between constructs hold true for both groups of education. Implications for public policy and marketing actions are addressed.info:eu-repo/semantics/publishedVersio

    The relevance of follow-ups in data collection for the quality assurance system of the Portuguese population and housing census

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    The operationalization of the Population and Housing Census in Portugal is managed by a hierarchical structure in which Statistics Portugal is at the top and local government institutions at the bottom. When the Census takes place every ten years, local governments are asked to collaborate with Statistics Portugal in the execution and monitoring of the fieldwork operations at the local level. During the Pilot Test stage of the 2011 Census, local governments were asked for additional collaboration: to answer the Perception of Risk survey, whose aim was to gather information to design a quality assurance instrument that could be used to monitor the Census operations. The response rate of the survey was desired to be 100%, however, by the deadline of data collection nearly a quarter of local governments had not responded to the survey and thus a decision was made to make a follow up mailing. In this paper, we examine whether the same conclusions could have been reached from survey without follow ups as with them and evaluate the influence of follow ups on the conception of the quality assurance instrument. Comparison of responses on a set of perception variables revealed that local governments answering previous or after the follow up did not differ. However the configuration of the quality assurance instrument changed when including follow up responses.info:eu-repo/semantics/publishedVersio

    Intentions to call a helpline among victims of intimate partner violence: The role of the Theory of Planned Behavior and Gender Role Conflict

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    This research first aimed to test the Theory of Planned Behavior (TPB) as a model to understand the intentions to call a helpline of victimized males and females. A sample of 99 participants (53 males; 46 females) who were suffering violence at the time of participation were considered for analysis. Our results indicate that males and females’ attitudes and subjective norms significantly predicted intentions. Second, this study aimed to measure Gender Role Conflict (GRC) in victimized men and test its association with TPB constructs. GRC occurs when rigid, sexist, or restrictive gender roles result in the restriction, devaluation, or violation of others or the self. Our results indicate that GRC was only negatively associated with perceived behavioral control. Additionally, in our sample of men who filled the GRC measure (n = 245), victimized men reported significantly higher GRC than non-victimized men. Overall, our findings indicate gender specificities in the intentions to call a helpline and suggest that GRC plays an important role in seeking help for men.info:eu-repo/semantics/acceptedVersio

    Index of satisfaction with public transport: a fuzzy clustering approach

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    Increasing public transport use is recognized by many countries as crucial to the pursuit of a global strategy for environmental sustainability and improving urban mobility. Understanding what users value in a public transport service is essential to carry out this strategy. Using fuzzy clustering, we developed an index that measures individual user satisfaction with the public transport service in the metropolitan area of Lisbon and subsequently identified the possible determinants of satisfaction by means of a regression tree model. The results achieved unveil a hierarchical partition of the data, highlighting the diversified level of satisfaction among public transport users that is reflected in the distribution of the index. The managerial implications of the findings for the public transport service are addressed.info:eu-repo/semantics/publishedVersio

    Intimate partner violence directed at men: Experiences of violence, help-seeking, and potential gender role conflict among Portuguese men

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    Recent research has shed light on how men in same-sex and different-sex relationships experience Intimate Partner Violence (IPV), and how it may contribute to their Gender Role Conflict (GRC), through which men face a dissonance with their gender roles. However, knowledge on these topics is still lacking. We aim to better understand men’s experiences of violence in their same-sex or different-sex relationships by identifying their dynamics and the specific barriers and facilitators to seeking help. Semi-structured interviews were conducted with 14 adult men (Heterosexual, n = 6; Gay, n = 5; Bisexual, n = 2; Not disclosed, n = 1) who self-identified as having been targets of IPV. The interview protocol considered the literature on IPV and the feedback from stakeholders in victim support services. The results were analyzed following the principles of Content Analysis. Our findings suggest that men are negatively impacted by their abusive relationships, with physical, psychological, sexual, and economic violence having been perpetrated by their same-sex or different-sex partners. Some men reported being further stigmatized in their help-seeking experiences. Gay and bisexual men indicated specific processes that played a significant role in their experiences. Some men revealed discomfort with the identity of “victim”, which may be linked to possible GRC processes. In sum, IPV impacts men in different-sex and same-sex relationships, and our findings provide new insights about how violence and help-seeking are experienced in the Portuguese cultural setting. Future efforts should focus on assessing possible GRC processes in this population and provide adequate information and tailored services to the specific needs of these men.info:eu-repo/semantics/publishedVersio

    Men who suffered intimate partner violence: Impressions about existing public campaigns and recommendations for new ones

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    Over the last decades, the negative effects of intimate partner violence (IPV) directed at men in abusive different-sex and same-sex relationships have been increasingly investigated. Men who are the targets of IPV face many barriers to help-seeking, and to overcome them, public awareness campaigns have been developed. Women who experienced IPV have found campaigns targeting them to be harmful and misleading, and previous research suggests that following the principles of formative evaluation research may improve campaigns’ effectiveness and reduce unwanted negative effects. This article documents the theory-based formative evaluation research conducted with 14 men abused in different-sex and same-sex relationships for the creation of targeted campaigns. Through semi-structured interviews, men were asked about their overall knowledge of campaigns, their thoughts about specific pictorial IPV campaigns, and their suggestions for the development of new campaigns. Thematic analysis and a theoretically grounded coding scheme were used to analyze the content of the interviews with high inter-rater reliability. Overall, our results indicate that most men were not aware of campaigns in Portugal, and their impressions about the ones they recalled were mixed. Most men praised clear messages informing forms of violence, while some responded negatively to the inclusion of words such as “shame” and “victim”, and the depiction of bruises. They also considered that future campaigns targeting men should portray “real people” like them and provide information on self-efficacy, the efficacy of recommended responses, and threat susceptibility. Our findings are consistent with previous evidence with women who experienced IPV but also provide theoretically grounded novel contributions and highlight the importance of considering the population of interest’s insights when developing and testing new campaigns.info:eu-repo/semantics/publishedVersio

    Quality assurance in the Portuguese census: the contribution of the balanced scorecard

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    This article describes how the balanced scorecard methodology and associated procedures were developed and implemented as the framework for the quality assurance strategy of the fieldwork in the 2011 Portuguese Population and Housing Census. The main goal of a census operation is to provide high-quality statistical information on population, buildings, and dwellings that meet users’ needs. The most critical activity of a census is the fieldwork operation where the distribution, completion, and recollection of census questionnaires are handled. Due to the dimension, complexity, and need to guarantee the final product quality of the census 2011 operation, the balanced scorecard methodology was elected as the framework for the quality assurance strategy implementation. This was the first time such a management system was used in a census operation. In terms of academic research on census quality control, the quality focus has been on the net undercount based on post enumeration survey. On the contrary, the authors’ concern is about how to ensure quality enumeration work during the census operation. The balanced scorecard methodology allowed integrating the operational execution of goals and its control into a single census management tableaux du bord, which allowed the provision of updated information on the ongoing processes and, thus, the ability to make timely corrections for those targets that suffered deviations.info:eu-repo/semantics/acceptedVersio

    Instrumento de avaliação para otimizar a comunicação interna na Unidade de trabalho.

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    A comunicação, do ponto de vista empresarial, pode ser entendida como função indispensável de pessoas e organizações, através da qual se conduz uma relação com o meio ambiente, com os outros e com suas próprias partes, mediante processos internos. Entende-se, por isso, que o equilibrio da organização está na disposição ordenada entre as partes que a compõem. Esse equilibrio e integração dependem fundamentalmente do seu processo comunicacional, ou seja, ao se organizar, uma empresa organiza, de fato, o fluxo de informações a ela relacionadas. Assim, estarão organizando suas relações humanas, administrativas e estratégicas entre suas partes funcionais.bitstream/CNPDIA/8888/1/CT09_96.pd
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