Complexity analysis of the Next Gen Air Traffic Management System: trajectory based operations

According to Federal Aviation Administration traffic predictions currently our Air Traffic Management (ATM) system is operating at 150 percent capacity; forecasting that within the next two decades, the traffic with increase to a staggering 250 percent [17]. This will require a major redesign of our system. Today's ATM system is complex. It is designed to safely, economically, and efficiently provide air traffic services through the cost-effective provision of facilities and seamless services in collaboration with multiple agents however, contrary the vision, the system is loosely integrated and is suffering tremendously from antiquated equipment and saturated airways. The new Next Generation (Next Gen) ATM system is designed to transform the current system into an agile, robust and responsive set of operations that are designed to safely manage the growing needs of the projected increasingly complex, diverse set of air transportation system users and massive projected worldwide traffic rates. This new revolutionary technology-centric system is dynamically complex and is much more sophisticated than it's soon to be predecessor. ATM system failures could yield large scale catastrophic consequences as it is a safety critical system. This work will attempt to describe complexity and the complex nature of the NextGen ATM system and Trajectory Based Operational. Complex human factors interactions within Next Gen will be analyzed using a proposed dual experimental approach designed to identify hazards, gaps and elicit emergent hazards that would not be visible if conducted in isolation. Suggestions will be made along with a proposal for future human factors research in the TBO safety critical Next Gen environment.     

The effects of leadership style on stress outcomes

The present study manipulated transformational and transactional leadership styles to examine their influence on individuals' performance on a stressful task, and on perceived social support, self-efficacy beliefs, emotions, and stressor appraisals. In addition, this study examined whether these variables mediated the relationship between leadership style and performance. Two hundred fourteen participants viewed video instructions for a stressful task presented by an actor depicting one of three leadership styles (transformational, transactional-contingent reward, and transactional-management by exception). Participants' psychological, emotional, and motivational responses to the videos were assessed prior to their engagement with the task. The transformational leadership condition was associated with enhanced task performance, higher social support perceptions, greater efficacy beliefs, lower negative affect, and lower threat appraisals compared to the transactional conditions. Causal modeling revealed that leadership style had a direct, rather than indirect, effect on task performance. The present research extends leadership research by providing an experimental evaluation of the costs/benefits of transformational and transactional leadership under stressful task conditions. Some of the results parallel those from correlational field studies, thus corroborating transformational leadership theory while other results diverge from theory, but present opportunities for future research.     

Safer Sex in Later Life: Qualitative Interviews With Older Australians on Their Understandings and Practices of Safer Sex

Rates of sexually transmitted infections (STIs) are increasing in older cohorts in Western countries such as Australia, the United Kingdom, and the United States, suggesting a need to examine the safer sex knowledge and practices of older people. This article presents findings from 53 qualitative interviews from the study Sex, Age, and Me: A National Study of Sex and Relationships Among Australians Aged 60+. Participants were recruited through an online national survey. We consider how participants understood “safer sex,” the importance of safer sex to them, the safer sex practices they used (and the contexts in which they used them), and the barriers to using safer sex. Older adults had diverse understandings, knowledge, and use of safer sex practices, although participants tended to focus most strongly on condom use. Having safer sex was strongly mediated by relationship context, trust, perceived risk of contracting an STI, concern for personal health, and stigma. Common barriers to safer sex included erectile difficulties, embarrassment, stigma, reduced pleasure, and the lack of a safer sex culture among older people. The data presented have important implications for sexual health policy, practice, and education and health promotion campaigns aimed at improving the sexual health and well-being of older cohorts.     

Longitudinal Dyad Models in Family Research

Multilevel modeling allows for the simultaneous analysis of data gathered at more than 1 unit of analysis (e.g., children nested in schools). It is often used to examine the effects of various contexts on individual differences in change. This paper promotes the application of multilevel models to longitudinal dyadic data in family research. By focusing on the dyad as context, researchers can examine within‐dyad change and begin to understand the interactive processes that constitute the relationship between partners. They can then frame questions about interdyad differences in within‐dyad change. We present several longitudinal models that researchers can use to examine the pattern of change within dyads, assess heterogeneity in change across dyads, and investigate cross‐partner effects on change. We comment on the implications of these models for family research.     

Researching Giving and Volunteering in Australia

The giving of time and money, mainly to private nonprofit organisations is not trivial, but in Australia has been little studied. This article introduces a special issue of the Australian Journal of Social Issues which draws on data collected in the largest study of giving and volunteering conducted in Australia hitherto. It seeks to establish terminological guidelines and reviews past Australian research on giving and volunteering, arguing that there has been a disproportionate interest in volunteering. It seeks to put to rest some common myths about giving and explores whether the increase in giving and volunteering can be attributed to government policy. It concludes by introducing the other papers in the collection.     

Gender, Body Image, and Depressive Symptoms among Low-Income African American Adolescents

The present study tested for gender differences in depression and body image among a sample of 6th–8th grade low-income African American adolescents. Gender differences were found, with adolescent girls more likely to report both depressive symptoms and poor body image. The most frequently endorsed body image concern for both boys and girls was the desire to lose weight, with approximately half of the girls in this sample reporting they would like to lose weight. Results of mediational analyses indicate that poor body image mediates the relation between gender and depression in this sample, suggesting that heightened rates of depression, among girls, are due to heightened rates of poor body image.     

Village Tolerance of Abuse,Women's Status,and the Ecology of Intimate Partner Violence in Rural Uttar Pradesh,India

We explore the multilevel determinants of intimate partner violence (IPV) against women in rural Uttar Pradesh, India. We focus on village tolerance of abuse and its ability to regulate the effects of individual and village‐level women's status and social capital. Using individual and village data from the 1998 to 1999 India National Family Health Survey, we find that village tolerance and women's status at individual and village levels help explain the risk of IPV. Village tolerance of abuse also moderates the ability of village‐level women's status and social capital to protect women from IPV. Results underscore the need to understand processes that sustain and/or challenge violence‐legitimating norms.     

Getting started as a physician executive

In clinical practice, technical skills often outweigh interpersonal and leadership skills as success factors--you can be a great doctor and a so-so person. But the reverse seems to be true in the physician executive role; it is precisely the intangible leadership skills that contribute to and determine potential success. And they can be tough to master, especially when you focus on them for the first time, partway through an already-successful career. Practicing leadership is like practicing medicine. It's not just a matter of learning some new things--if it were only that, physicians are known to be excellent learners. Nor is it just a matter of determination or application--this is not a battle that sweat and effort alone can win. Most physicians will want to "try on" the executive role before making strategic moves in that direction. But be clear about what you want to get out of any project or activity before you jump in. If you're seeking a management degree, the best approach is to tie together developing your technical and interpersonal skills, as well as the formal credentials.     

Policy lessons for strengthening nonprofits

Those who develop or influence Australian public policy impacting on the nonprofit sector rarely have adequate empirical research upon which to base their judgments. Giving Australia research evidence relevant to strengthening giving and volunteering is brought together in this article to inform policy options for government, nonprofit and philanthropic entities. It begins with consideration of research findings related to the capacity of those that give or volunteer and the implications these findings have for policy. Three key criteria are developed for assessing policies to strengthening giving and volunteering, behaviours that primarily assist nonprofit organisations – policies that build trust between those that give and the recipients of their gifts, policies that strengthen affiliation and policies that encourage planned giving.     

Measuring the Quality of Peer-Reviewed Publications in Social Work: Impact Factors—Liberation or Liability?

Systems for measuring the quality of publications in peer-reviewed academic journals have achieved importance in the ‘audit culture’ to which academia worldwide has become increasingly subjected. In the United Kingdom this debate has focused on government proposals to give greater emphasis to bibliometrics (counts of journal articles and their citations) as a measurement of research quality, in respect of publications in the emergent Research Excellence Framework (REF) which is set to replace the Research Assessment Exercise (RAE). This approach impacts on social work educators who are the main producers of papers published in peer-reviewed academic journals. It affects their publishing behaviour by pressurising them to publish their work in journals that are regarded as being prestigious, for which ‘high impact factor’ journals as determined by Thomson Reuters—a private commercial information management enterprise with headquarters in the United States—has become a proxy for quality. In this paper the authors describe and critique the Thomson Reuters system as it applies to social work and propose an alternate fair, inclusive and transparent system for assessing the quality of publications based on peer evaluation and incorporating an ethical approach consistent with the discipline's professional values.