A Statistical Approach to Establishing Subsystem Environmental Test Specifications

Results are presented of a research task to evaluate structural responses at various subsystem mounting locations during spacecraft level test exposures to the environments of mechanical shock, acoustic noise, and random vibration. This statistical evaluation is presented in the form of recommended subsystem test specifications for these three environments as normalized to a reference set of spacecraft test levels and are thus suitable for extrapolation to a set of different spacecraft test levels. The recommendations are dependent upon a subsystem's mounting location in a spacecraft, and information is presented on how to determine this mounting zone for a given subsystem

Capabilities of electrodynamic shakers when used for mechanical shock testing

The results of a research task to investigate the capabilities of electrodynamic vibrators (shakers) to perform mechanical shock tests are presented. The simulation method employed was that of developing a transient whose shock response spectrum matched the desired shock response spectrum. Areas investigated included the maximum amplitude capabilities of the shaker systems, the ability to control the shape of the resultant shock response spectrum, the response levels induced at frequencies outside the controlled bandwidth, and the nonlinearities in structural response induced by a change in test level

Washington\u27s Sexually Violent Predator Statute: Constitutionally Sound and the Best Alternative for the Problem of Violent Predators

This Comment argues that the SVP statute is not only constitutionally sound, but is also the best alternative for the problem of sexually violent predators. Part II describes the SVP statute and how it came to be enacted. Next, in examining the constitutionality of the statute, Part III briefly describes the decision rendered by the Washington Supreme Court in 1993 which upheld the SVP statute, as well as the federal district court\u27s 1995 ruling, which held the statute to be unconstitutional. In arguing that the statute is constitutional, Part IV addresses and refutes the arguments made by the federal district court. Lastly, Part V looks at the alternative solutions available for the problem of sexually violent predators, and argues that neither mandatory life sentences nor an expansion of the current civil commitment system is the proper answer to this dilemma

Washington\u27s Sexually Violent Predator Statute: Constitutionally Sound and the Best Alternative for the Problem of Violent Predators

This Comment argues that the SVP statute is not only constitutionally sound, but is also the best alternative for the problem of sexually violent predators. Part II describes the SVP statute and how it came to be enacted. Next, in examining the constitutionality of the statute, Part III briefly describes the decision rendered by the Washington Supreme Court in 1993 which upheld the SVP statute, as well as the federal district court\u27s 1995 ruling, which held the statute to be unconstitutional. In arguing that the statute is constitutional, Part IV addresses and refutes the arguments made by the federal district court. Lastly, Part V looks at the alternative solutions available for the problem of sexually violent predators, and argues that neither mandatory life sentences nor an expansion of the current civil commitment system is the proper answer to this dilemma

Investigating the experience of flow in European Tour golfers

Objectives: This study explored how flow (commonly known as “the zone”) is experienced in elite golf, a sport which may be different to those studied previously due to its slower paced, stop-start nature. Design: In-depth, semi-structured interviews were employed to gain rich insight into the flow experiences of these participants. Method: The participants were 10 male professional golfers (Mean age = 37) who had competed on the European Tour for, on average, 10 full seasons. Five of these had won on the European Tour and two had Ryder Cup experience. The players were asked a range of questions relating to what the experience of flow is like within golf, and the interviews lasted, on average, 53 minutes. Results: Inductive thematic analysis was employed and 14 themes describing flow emerged, of which 11 displayed similarities to Csikszentmihalyi’s dimensions. Notably, however, these golfers reported an additional awareness of being in flow as it occurred, and even attempted to maximise the experience. Two other themes did not clearly fit with the original dimensions either: altered cognitive and kinaesthetic perceptions, and feeling calm and/or relaxed during the experience. Finally, the participants also perceived that they could observe others in flow, e.g., through changes in behaviour. Conclusions: These findings suggest possible revisions to the existing framework to more clearly describe the flow experience within elite golf and possibly other sporting contexts. The seemingly observable nature of flow may also be useful for researchers and, for example, within coaching

The importance of parents and teachers as stakeholders in school-based healthy eating programs

Schools have a crucial role for promoting and establishing healthy behaviors early in the life-course. In recent years, a substantial effort and resources have been invested in attempts to change the 'food culture' in schools in westernized societies. Large school-based programs which promote healthy eating often utilize an ecological model for instigating behavior change amongst school children. An ecological model is a set of comprehensive intervention strategies that target a multitude of factors which influence the eating practices of children in the school setting. The cultural issues that necessitate these healthy eating programs mean that interventions are not without challenges to their application and effectiveness particularly as they rely on collaboration between stakeholders: teachers, parents, public health practitioners, policy makers and more. The stakeholder input and relations are key parts of planning, implementing and evaluating complex health promotion and education programs in schools. This commentary will outline the importance of considering both teachers and parents as influencing agents or 'enablers' in the process of creating change in this context. Parental perceptions and teachers’ insights are critical for underpinning intervention feasibility, acceptability and performance. Their perceptions and understandings can provide ground-level and highly applicable expertise and importantly motivate children in the school environment. The philosophical principles behind parent and teacher integration into formal program evaluation are discussed, providing a theoretical basis for program evaluation. Recommendations are made for policy makers, researchers and professional evaluation experts’ to consider and integrate these stakeholders in future programs

#Bigbirds never die: Understanding social dynamics of emergent hashtag

We examine the growth, survival, and context of 256 novel hashtags during the 2012 U.S. presidential debates. Our analysis reveals the trajectories of hashtag use fall into two distinct classes: “winners” that emerge more quickly and are sustained for longer periods of time than other “also-rans” hashtags. We propose a “conversational vibrancy” framework to capture dynamics of hashtags based on their topicality, interactivity, diversity, and prominence. Statistical analyses of the growth and persistence of hashtags reveal novel relationships between features of this framework and the relative success of hashtags. Specifically, retweets always contribute to faster hashtag adoption, replies extend the life of “winners” while having no effect on “also-rans.” This is the first study on the lifecycle of hashtag adoption and use in response to purely exogenous shocks. We draw on theories of uses and gratification, organizational ecology, and language evolution to discuss these findings and their implications for understanding social influence and collective action in social media more generally

Dsyfunctional leadership: a view from the professional coach

This exploratory study reviews definitions of the emerging concept of dysfunctional leadership and describes the incidence and type of dysfunctional behaviours which are raised within the context of 'one-to-one' coaching sessions. Following interviews conducted with experienced coaches working as external providers, the study concludes that dysfunctional leadership behaviours appear frequently as the main theme in coaching discussions. The study finds that it is the core management behavioural competencies that are lacking in middle and senior managers, despite the increasing incidence of interventions which purport to develop leadership and management skills. It also finds that coaching delivered by external providers is an effective intervention to address the dysfunctional leadership behaviours, and that coaches use a variety of strategies to support the coachee, the most effective being those that develop self-awareness in the coachee

Prolonged QT Syndrome and Seizure Secondary to Alkaline Earth Metal Deficiency: A Case Report

Introduction. Alkaline earth metal deficiency is recognized as a cause of both seizure and long QT syndrome. Their deficiency can have significant repercussions on the function of cells, tissues, and organs of the body. An understanding of the role of electrolytes allows an appreciation of the significance of depleted levels on cell function. Case Report. A 65-year-old lady was admitted with symptoms of chest discomfort, vomiting, increased stoma output, and dizziness. Two days following admission she suffered a tonic-clonic seizure. ECG review demonstrated a prolonged QTc interval, raising the possibility of an underlying Torsades de Pointes as the precipitant. This was attributed to electrolyte disturbance arising as a result of multiple aetiologies. Discussion. This paper highlights the multisystem effects of electrolyte disturbance, with emphasis upon its role in precipitating cardiac arrhythmia and neurological symptoms