International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / There is an increasing desire in many organizations, including NASA and the DoD, to use constellations or fleets of autonomous spacecraft working together to accomplish complex mission objectives. At the Air Force Research Laboratory’s (AFRL) Space Vehicles Directorate we are investigating and developing architectures for commanding and controlling a cluster of cooperating satellites. For many space missions, large monolithic satellites are required to meet mission requirements. In many cases this results in costly satellites which are more complex, more susceptible to failure, and which have performance characteristics that are less than optimal due to realistic physical size limitations. Recently various organizations have begun to explore how distributed clusters of cooperating satellites can replace their larger monolithic counterparts resulting in an overall cost reduction, enhanced mission performance, and increased system fault tolerance. Large clusters of satellites flying in formation are required to have some level of on-board autonomy in order to: fly within specified tolerance levels; perform collision avoidance; address fault detection, isolation, and resolution (FDIR); share knowledge; and plan and schedule activities. In addition, from an operations standpoint, commanding and controlling a large cluster of satellites can be very burdensome for ground operators. At AFRL we are addressing these issues by development of an on-board Cluster Management system which will, in essence, provide the capability to treat a cluster of satellites as a single virtual satellite. A systems level approach is being taken, therefore from a ground perspective the ground control station must also be able to treat the cluster as a virtual satellite. [1] This paper will describe our Cluster Management system, which is the intelligent entity that is responsible for making cluster level decisions and which enables the satellite cluster to function as a virtual satellite. The cluster manager functionality can be broken down into the following five areas: • Command and control • Cluster data management • Formation flying • Fault management • On-board Planning This paper will contain a detailed description of the Cluster Manager architecture along with its various modules.

Thesis (PhD)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: Multicultural conflicts pervade our world and have sparked considerable debate about their possible resolution. We argue that how culture is conceptualized is crucial to the continued dialogue about multicultural conflicts. Specifically, we argue that approaches that argue for the protection of cultures run into significant problems if they do not employ a conception of cultures as delineated entities. However, we also hold that the notion that cultures cannot be distinct in any way, does very little to contribute to dialogue. From the very beginning, it excludes the notion of a culture that is to be protected and thus stops the dialogue there and then. To be true to the principle of audi ad alteram partem, approaches to multicultural conflicts must conceive of an alternative model, provided that such a model is logically possible. This may provide the dialogue with a much needed point of common understanding from which to proceed. Accordingly, we develop a model of culture whereby it is possible to delineate cultures. In this model, a culture can be delineable in a manner analogous to how we delineate persons. Our model of personal delineation suggests a dual structure whereby a trivial personal boundary contains a unity of conflict within the person. In persons, this unity of conflict lies in the relationship between the “I” and repressed meanings. This relationship must be characterised by self-referential decisions and the capacity to make self-referential decisions is central to our definition of personal autonomy. In cultures, we argue that multicultural conflicts provide the necessary conditions that enable us to conceptualize trivial boundaries in cultures in terms of the communicative relationships between members of a particular culture. Multicultural conflicts prompt self-categorizations by individuals and such self-categorizations are made in terms of group membership. Though all members may not agree as to who belongs to the culture and who does not, the claims made about membership serve to differentiate the communicative relationships inside the culture from those outside it. Furthermore, we show that, inside this trivial boundary, a unity of conflict analogous to the one found in personal autonomy, can be exhibited by cultures. We show how a culture, through its institutions, particularly through an institutionalised exit possibility, 1) may exhibit self-reference and 2) relate to a source of authority in the same way as a person does when making selfreferential decisions. In this regard, we argue that institutionalised exit possibilities embody adherence to the consensus vs. power criterion, according to which the dominant account of a culture is achieved through consensus, as opposed to through the exertion of power. Furthermore, we argue that with a strong analogy between cultures’ and personal delineation, it becomes reasonable to extend concepts we usually apply to persons, such as fairness, attachment and viability, so that they can also apply to cultures. We show that the application of these concepts clarifies certain current multicultural issues. The application of theses concepts also leads to the development of a decision making process to deal with multicultural issues. / AFRIKAANSE OPSOMMING: Multikulturele konflikte kom wêreldwyd voor en het reeds aansienlike debat oor die resolusie van sodanige konflik ontlok. Ons voer aan dat hoe kultuur gekonseptualiseer word, besonder belangrik is vir die voorgesette dialoog oor multikulturele konflikte. Meer spesifiek voer ons aan dat benaderings wat vir die beskerming van kulture argumenteer, beduidende probleme ondervind indien dit nie `n konsepsie van kulture as delinieerbare entiteite gebruik nie. Die gedagte dat kulture nie op enige manier afgebaken kan word nie, dra egter ook weinig by tot dialoog. Dit sluit van meet af die gedagte dat kulture beskerm moet word, uit en staak dus die dialoog daar en dan. Ten einde getrou te wees aan die beginsel van audi ad alteram partem, moet benaderings tot multikulturele konflik `n alternatiewe model van kultuur bedink, mits so `n model logies moontlik is. So `n model kan die dialoog van `n broodnodige gemeenskaplike uitgangspunt voorsien. Ons ontwikkel dienooreenkomstig `n model van kultuur waarvolgens dit moontlik is om kulture te delinieer. Volgens hierdie model kan `n kultuur delinieer word in analogie met hoe persone delinieer word. Ons model van persoonlike deliniëring stel `n tweeledige struktuur voor, waarvolgens `n triviale persoonlike grens `n eenheid van konflik binne die persoon omspan. In persone lê hierdie eenheid van konflik in die verhouding tussen die “ek” en onderdrukte betekenisse. Hierdie verhouding moet deur self-referensiële besluite gekenmerk word. Die vermoë tot self-referensiële besluite, so voer ons aan, is ook die sentrale kenmerk van persoonlike outonomie. Ons voer aan dat multikulturele konflikte die noodsaaklike toestande skep wat ons in staat stel om triviale grense in kulture te definieer in terme van die kommunikatiewe verhoudings tussen lede van `n spesifieke kultuur. Multikulturele konflikte ontlok self-kategorisering deur individue en sodanige kategorisering word in terme van groeplidmaatskap gedoen. Hoewel alle lede van die kultuur nie noodwendig saamstem oor wie aan die kultuur behoort en wie nie, maak die bewerings wat oor lidmaatskap gemaak word dit moontlik om die kommunikatiewe verhoudings binne die kultuur te onderskei van dié buite die kultuur. Verder demonstreer ons dat, binne hierdie triviale grens, kulture `n eenheid van konflik ten toon kan stel wat soortgelyk aan die eenheid van konflik by persoonlike outonomie is. Ons wys hoe `n kultuur, deur sy instellings, en vernaam deur `n geïnstitusionaliseerde uitgangsmoontlikheid (‘exit possibility’) 1) self-referensie ten toon kan stel en 2) in verhouding met `n bron van gesag kan staan soos `n persoon wanneer s/hy self-referensiële besluite maak. In dié verband voer ons aan dat geïnstitusionaliseerde uitgangsmoontlikhede die beliggaming is van die nakoming van die konsensus vs. mag-kriterium, waarvolgens die dominante weergawe van `n kultuur bereik word deur konsensus, teenoor deur die uitoefen van mag. Verder voer ons aan dat `n sterk analogie tussen kulture en persone se deliniëring dit moontlik maak om begrippe soos regverdigheid, binding en lewensvatbaarheid, wat gewoonlik op persone toegepas word, op kulture toe te pas. Die toepassing van hierdie begrippe verbeter ons begrip van sekere huidige multikulturele kwessies en lei ook tot die ontwikkeling van `n besluitnemingsproses vir multikulturele kwessies.

This thesis treats of the use and meaning of the Greek concept of eleutheria (freedom) and the cognate term autonomia (autonomy) in the early Hellenistic Period (c.337-262 BC) with a specific focus on the role these concepts played in the creation and formalisation of a working relationship between city and king. It consists of six chapters divided equally into three parts with each part exploring one of the three major research questions of this thesis. Part One, Narratives, treats of the continuities and changes within the use and understanding of eleutheria and autonomia from the 5th to the 3rd centuries. Part Two, Analysis, focuses on the use in action of both terms and the role they played in structuring and defining the relationship between city and king. Part Three, Themes, explores the importance of commemoration and memorialisation within the early Hellenistic city, particularly the connection of eleutheria with democratic ideology and the afterlife of the Persian Wars. Underpinning each of these three sections is the argument that eleutheria played numerous, diverse roles within the relationship between city and king. In particular, emphasis is continually placed variously on its lack of definition, inherent ambiguity, and the malleability of its use in action. Chapter one opens with the discovery of eleutheria during the Persian Wars and traces its development in the 5th and early 4th centuries, arguing in particular for a increasing synonymity between eleutheria and autonomia. Chapter two provides a narrative focused on the use and understanding of eleutheria in the years 337-262. It emphasises continuity rather than change in the use of eleutheria and provides a foundation for the subsequent analytical and thematic chapters. Chapter three analyses eleutheria itself. It emphasises the inherent fluidity of the term and argues that it eschewed definition and was adaptable to and compatible with many forms of royal control. Chapter four looks at the role of eleutheria within the relationship between city and king. It elaborates a distinction between Primary and Secondary freedom (freedom as a right or freedom as a gift) and treats of eleutheria as a point of either unity or discord within a city‘s relationship with a king. Chapter five explores the connection between freedom and democracy and looks at how the past was used to create and enforce a democratic present, specifically in constructing both Alexander‘s nachleben as either a tyrant or liberator and the validity of Athenian democratic ideology in the 3rd century. Chapter six concludes the thesis by returning to the Persian Wars. It analyses the use of the Wars as a conceptual prototype for later struggles, both by kings and by cities. Exploring the theme of the lieu de mémoire, it also outlines the significance of sites like Corinth and Plataia for personifying the historical memory of eleutheria.

Discussions of autonomy at the end of life in health care contexts is no new phenomenon. However, what seems to have changed in issues of autonomy is cases where patients want to refuse a treatment to cases where patients are demanding more treatment when medical professionals may not agree or be able to provide them with the medical treatment. Some key competing interests impacting patient autonomy include beneficence-doing what is in the best interests of the health or well-being of the patient- and resource limitations. Here, I will explore distributive justice theories that impact the end of life and how they constrain autonomy.

published_or_final_version / Education / Doctoral / Doctor of Philosophy

Shared governance (SG) creates an evidence-based framework to support decision making in healthcare organizations by encouraging nursing staff ownership of nursing practice issues. This project assessed the current state of shared governance at a community hospital through: (a) deployment of Hess's Index of Professional Nursing Governance (IPNG) and the National Database of Nursing Quality Indicators (NDNQI) nursing satisfaction surveys which were open to nurses working in areas included in the SG framework at the project site, and (b) retrospective review of Unit Practice Council (UPC) and Nursing Senate (NS) minutes and agendas. Kotter's theory of change and the logic model informed interventions aimed at creating an effective SG. IPNG data were analyzed using Hess' scoring guidelines to establish total governance and subscale scores. Mean IPNG scores of nurse leaders, clinical nurse managers, and staff nurses were compared using a 1-way ANOVA based on job title, education, employment status, and shift. NDNQI results were analyzed based on benchmarked Magnet objectives and comparison to previous year's surveys. Meeting agendas and minutes were analyzed for attendance and initiation of interventions. Outcomes of this project included successful creation of a UPC on a medical telemetry unit; alignment of meeting times to promote attendance; paid access to remote meeting attendance; standardization of meeting minutes and agendas; and unit-specific, outcomes-data dashboards. Implementation of this model to improve the effectiveness of SG can lead to positive social change through improvement in the decision-making process in the nation's healthcare institutions. Inclusion of all members of the healthcare team in the decisions that impact practice helps ensure comprehensive, evidence-based, and patient-centric care.

Quality of life is a phrase that most people are familiar with, regardless of whether or not they can define it. Much research has been conducted across disciplines in an effort to explain the construct. As human service programs become more focused on outcomes, there is greater interest in measuring quality of life as an indicator of service quality and success. This study was designed to test whether or not quality of life differences exist between adults with developmental disabilities and the general population at an item, scale, and composite level. The quality of life dimensions that were tested included items related to well-being, community participation, access to services and human rights, and choice and decision-making. Differences were found in well-being and decision-making. Differences were also present in certain access items. The two groups also differed in overall quality of life with those with developmental disabilities having lower quality of life. A logistic regression model that was comprised of the life dimensions differentiated between the two groups with over 90% accuracy. Overall results indicate that adults with developmental disabilities are at a significant disadvantage with regard to quality of life in comparison with the general population.

Using a large sample from the NICHD Study of Early Child Care, the current study examined the processes through which children's agentic processes promoted their resilience in the face of mothers' depressive symptoms at first grade. Children's resilience in the presence of mothers' depressive symptoms was demonstrated to be homogeneous across domains of academic performance, social competence, internalizing behavior, and externalizing behavior. Children's effortful control, self-assertion, and mastery motivation predicted their resilience in these domains to a varying degree. The agentic processes mediated the relation of different patterns of individual (i.e., child intelligence, temperament), relational (i.e., attachment security), and environmental (i.e., maternal sensitivity, childcare quality) factors to children's resilience across domains. Interrelations among child individual, relational, and environmental characteristics were also observed. Moreover, findings from two analytic approaches converged in terms of underscoring the importance of the agentic system in promoting child resilience in the face of mothers' depressive symptoms. Children's agentic processes promoted their resilience via additive main effects rather than interactive effects. / text

There is consensus among entrepreneurship scholars regarding the importance of entrepreneurship toward the economies of countries. There is sufficient evidence to support the view that entrepreneurs are characterised by unique characteristics. Entrepreneurship and entrepreneurial orientation have been widely studied and entrepreneurial orientation is considered instrumental for motivating individuals to engage in entrepreneurial activities. Previous research has also identified a correlation between entrepreneurial orientation and the performance of a firm. Many studies on the subject of entrepreneurial orientation have revealed that entrepreneurial orientation is multi-dimensional, for example, previous studies have identified autonomy, innovation, risk taking, competitive aggressiveness and pro-activeness as some of the factors that may influence entrepreneurial orientation. Given the importance of entrepreneurship with regard to job creation, the study attempted to identify the entrepreneurial orientation of Generation Y students. South Africa is experiencing high unemployment levels among the youth and the need to identify the entrepreneurial perceptions of the youth is significant as future entrepreneurs will come from this cohort. The findings of this research study may assist different stakeholders such as government, businesses and higher education institutions among others to take appropriate actions to address the problem of unemployment and create a favourable environment where persons may engage in entrepreneurial activities. The purpose of this research study was to determine the entrepreneurial orientation of Generation Y students in the Vaal Triangle area. Autonomy, innovation and risk taking were identified as factors that may possibly influence the entrepreneurial orientation of Generation Y students in this area. The findings in this research study indicate that students regard themselves as being autonomous, innovative and risk takers. No significant differences were found with regard to the entrepreneurial orientation of males and females. In comparing different designated groups in terms of the three constructs, significant differences were noted among certain items, for example, Coloureds and Indians tend to perceive themselves as more innovative compared to other groups. However, further research is needed because there is no sufficient evidence to suggest that one group is more entrepreneurial than the other. The findings in this research study revealed that Generation Y students perceive themselves as being autonomous, innovative and risk takers. This is encouraging because entrepreneurial activities, to a large extent, are known to be influenced by entrepreneurial orientation. It is evident that the youth can be encouraged to be job creators instead of job seekers. / Thesis (MCom (Entrepreneurship))--North-West University, Vaal Triangle Campus, 2012.

The success of the future for South African organisations relies heavily on its leadership, rather than on its management. Transformational leadership is critical to modem business, especially within the South African context. Transformational leadership is essentially about instilling a sense of purpose. in those who are led, and encouraging commitment by empowering employees through growth and development. This enables employees the opportunity to adapt and grow within organizations. The leader promotes change by creating a motivational climate which enhances growth, development, commitment, goal achievement and enjoyment. In order to facilitate the requirements of such an environment the employee needs social support that would enable job autonomy and ultimately job satisfaction. The objective of this study was to investigate the moderating effect of social support between job autonomy and job satisfaction, and to see if job satisfaction of employees in a large banking group can be predicted by their experience of job autonomy and social support in the workplace. The study was conducted within one of South Africa's leading financial institutions. In order to achieve the study objectives, data was collected from a sample (n=178) which consisted of employees ranging from junior management (CIT levels) to middle management (MIP levels). Descriptive and inferential statistics were used to analyse the data. Stepwise multiple regression analyses were carried out to determine whether the independent variables hold any predictive value regarding the dependent variable (job satisfaction). The results of the multiple regression revealed that gender had no effect in predicting participants' job satisfaction, indicating that effects for the other variables may operate similarly for males and females. It was found that participants' experience of autonomy, and the support they receive from colleagues are important in predicting their experiences of job satisfaction. However, the moderating effect of social support (from either colleagues or supervisor), was not supported in this research. This finding indicates that social support does not play a role in the translation of the experience of autonomy in job satisfaction. Further research into the moderating effects of social support between job autonomy and job satisfaction is warranted. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2007