Organisations throughout the world have to cope with an increasing rate of change. These organisational changes are due to a number of reasons, which include social, technological, economic and political reasons. These result in a change in government regulations. In South Africa, the changes include the merging of higher education institutions and changes in the educational landscape. The public higher education institutions were reduced by the Department of Higher Education and Training from 36 to 23. Same changes include new universities of technologies and mergers of other universities plus more comprehensive universities. Recently, government established two new universities, one in Mpumalanga and another in the Northern Cape. Job insecurity, job satisfaction, occupational stress, sense of coherence, and general health are key aspects of the higher education institutions during and after the transformation process. This study aimed to determine the relationship between job insecurity, job satisfaction, occupational stress, sense of coherence, and general health of employees in a higher education institution. The literature reviewed showed that job insecurity occurs as a result of a merger, which is one of the multiple antecedents in a job insecurity model. However, a merger, as an organisational condition, changes individual perceptions about job insecurity and its consequences. Job satisfaction, occupational stress, and general health are consequences of job insecurity. From the reviewed literature, it is clear that the employees’ lack of resources is a very serious challenge in their endeavour to perform their duties. Lack of resources results in the poor performance of employees and their inability to use their capabilities to deal with every day work-related challenges. A cross-sectional design with employees in higher education institution (N=229) was used. The Job Insecurity Inventory, Minnesota Job Satisfaction Questionnaire, An Organisation Stress Screening Tool, Orientation to Life Questionnaire, and General Health Questionnaire, and a biographical questionnaire were utilised. Statistical analyses were carried out for the three articles in the study with the help of the Statistical Package for Social Sciences (IBM-SPSS) program. Statistical methods used in this article consisted of descriptive statistics (for example, means, standard deviations and frequencies), Cronbach alpha coefficients, explanatory factor analyses, Pearson product-moment correlation coefficients, multiple regression analysis and mediation analysis (Omnibus procedure). The results of article 1 showed that job insecurity was statistically significantly related to general health (somatic symptoms, social dysfunction, hopelessness and worthlessness). This implies that employees who experience high job insecurity also experience problems with their health. General health had a practically significant negative correlation with sense of coherence. Literature reviewed states that a weak sense of coherence leads employees to perceive situations as threatening (that is, high job demands and low job resources), and could lead to ill health. The research findings clearly indicate that sense of coherence does not moderate the relationship between job insecurity and general health. Regarding the results of article 2, a practically significant negative relationship exists between occupational stress and job satisfaction (intrinsic, supervision, extrinsic). This means that employees with high levels of occupational stress display lower job satisfaction and vice versa. Occupational stress and general health have a negative relationship, implying that different occupational stress factors (work demands, insecurity and work relations) relate to the general health of employees. Employees, who experience high work demands, are insecure and experience poor work relations with their colleagues or supervisors, have problems with their health and do not enjoy normal day-to-day activities in the organisation. Job satisfaction displays a practically significant negative correlation with general health. This implies that employees who are not satisfied with the intrinsic satisfaction of their job and working environment experience headaches and lack physical energy. Such employees generally feel sick. They do not enjoy every day activities since they doubt their own competence and the meaning of life. Both occupational stress and job satisfaction are statistically significant predictors of general health. In conclusion, the results of this article report that job satisfaction mediates the relationship between occupational stress and the general health of employees in a higher education institution. The results of article 3 showed that practically significant positive relationships exist between sense of coherence and job satisfaction. Employees with a higher sense of coherence are more satisfied and motivated to work. They are more comfortable with other colleagues and the general working conditions. Employees with a strong sense of coherence are more resourceful in handling different work-related aspects, and they tend to experience higher job satisfaction. It was concluded that sense of coherence moderates the relationship between job satisfaction and some aspects of general health. The results imply that people with lower levels of sense of coherence are more dependent on job satisfaction to experience good health. This has direct implications for vocational and industrial psychologists, as well as higher educational institutions. Recommendations for future research were made. / PhD (Industrial Psychology) North-West University, Vaal Triangle Campus, 2014

<p>Optical coherence tomography (OCT) is a non-invasive imaging modality that uses low coherence interferometry to generate three-dimensional datasets of a sample's structure. OCT has found tremendous clinical applications in imaging the retina and has demonstrated great utility in the diagnosis of various retinal diseases. However, such diagnoses rely upon the ability to observe abnormalities in the structure of the retina caused by pathology. By the time an ocular disease has progressed to the point of affecting the morphology of the retina, irreversible vision loss in the eye may already occur. Changes in the functionality of the tissue often precede changes to the structure. Thus, if imaging methods are developed to provide additional functional information about the behavior and response of the retinal tissue and vasculature, earlier treatment for disease may be prescribed, thus preserving vision for the patient. </p><p>Within the last decade, significant technological advances in OCT systems have enabled high-speed and high sensitivity image acquisition using either spectral domain OCT (SDOCT) or swept-source OCT (SSOCT) configurations. Such systems use Fourier processing to extract structural information of a sample from interferometric principles. But such systems also have access to the optical phase information, which allows for functional analysis of sample dynamics. This dissertation details the development and application of methods using both intensity and phase information as a tool for studying interesting biological phenomena. The goal of this work is an extension of techniques to image the vasculature in the retina and enhance the clinical utility of OCT.</p><p>I first outline basic theory necessary for understanding the principles of OCT. I then describe OCT phase imaging in cellular applications as a demonstration of the ability of OCT to provide functional information on biological dynamics. Phase imaging methods suffer from an artifact known as phase wrapping, and I have developed a software technique to overcome this problem in OCT, thus extending its usefulness in providing quantitative information. I characterize the limitations in measuring moving scatterers with Doppler OCT in both SDOCT and SSOCT system. I also show the ability to image the vasculature in the retina using variance imaging with a high-speed retinal imaging system and software based methods to correct for patient motion and create a widefield mosaic in an automated manner. Finally, future directions for this work are discussed.</p> / Dissertation

By developing strong, self-sustaining individuals in organisations, employees will need to withstand the forces of stressors and be able to cope with continuous changes within their working environment. To move the equilibrium level from the current to the desired condition, the field of forces must be altered - by adding driving forces and by removing restraining forces. An individual's sense of coherence may either alleviate or aggravate reactions to a stressor and moderate the impact of occupational stressors on the individual's affective outcomes. The objectives of this study were to validate the 13-item version of the Orientation to Life Questionnaire (OLQ) (Antonovsky, 1987) and to determine the experience of employees with high levels of sense of coherence regarding helping and restraining factors within the workplace (compared to that of those with a low sense of coherence). A cross-sectional s w e y design was used. The total population (N = 2 678) of employees in a financial institution in Gauteng was used in this study. Random samples of groups with a strong (n = 300) and low (n = 300) sense of coherence were taken for purposes of the qualitative study. The OLQ (Antonovsky, 1987) and a biographical questionnaire were administered. The scale showed acceptable reliability and construct validity. The study set out to determine the applicability of the theoretical model of sense of coherence to employees in a financial institution. Reliability analysis revealed that the three subscales of sense of coherence were sufficiently internally consistent. The reliability of the measuring instrument were assessed with the use of Cronbach alpha coefficients. Descriptive statistics (e.g. mean and standard deviations) were used to analyse the data. By using the structural equation modelling approach, a one-dimensional factor structure for sense of coherence amongst employees in a financial institution emerged. The reliability analysis revealed that the alpha scores were acceptable. It can therefore be concluded that the 13-item version of the OLQ is a reliable and valid measuring instrument. The results showed that although employee groups with high and low levels of sense of coherence are experiencing similar helping and restraining factors within their working environment, helping factors are being experienced with a higher frequency by groups with high levels of sense of coherence and restraining factors with a higher frequency by groups with low levels of sense of coherence. Recommendations were made for future research. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2007

Emotional intelligence is a growing area of behavioural research; it recently grabbed the attention of some of the major organisations worldwide. The objective of this study was to determine the relationship between wellness and emotional intelligence in order to develop a structural model of psychological well-being. The following constructs were looked at, Optimism, Sense of Coherence, Life Satisfaction, Emotional Intelligence are all seen as good indicators of Psychological well-being. A cross-sectional design was used for this study. The participants (N=324) were students within the field of economic science. The Schutte Emotional Intelligence Scale, the Life Orientation Test Revised, the Satisfaction with Life Scale and the Orientation to Life scale were administered. Using a principal component analysis, a six-dimension factor structure for emotional intelligence among students emerged, explaining 45,24% of the variance. These factors were labelled positive affect, emotions-others, happy emotions, emotions-own, nonverbal emotions and emotional control. The most significant correlations found in this study was that Sense of Coherence is significantly positively related to Emotions Management and Life Satisfaction and significantly positively related to Emotions-Own, Happy Emotions, Positive Affect and Optimism. Sense of Coherence was negatively related to Pessimism. Emotions Management is significantly positively related to Emotions-Own, Happy Emotions, Positive Affect, Optimism and Life Satisfaction. Positive affect is significantly positively related to Optimism. Pessimism is significantly negatively related to Life Satisfaction. Optimism is significantly positively related to Life Satisfaction. After conducting a second factor analysis on the factors of the SEIS, LOT-R, SOC and SWLS, two factors were extracted, namely interpersonal and intrapersonal mastery. Using these factors, along with the results of the product-moment correlations, a psychological well-being model was designed and compiled. The results showed that Interpersonal mastery consisted of Positive Affect, Emotional Management, Sense of Coherence, Life Satisfaction and Optimism. Intrapersonal mastery consisted of Emotions-Others, Emotions-Own, Happy Emotions and Non-Verbal Emotions. It is evident from the above that the psychological well-being model consisted of intrapersonal mastery and environmental mastery. Recommendations for future research were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2007

Bakgrund: Animal Assisted Therapy (AAT) har i tidigare studier visat sig vara en effektiv metod inom äldrevården och pediatriken för att öka känslan av sammanhang och livskvalité. En person med autism behöver ha en anpassad miljö runtomkring sig för att bibehålla bland annat kognitiva funktioner som i sin tur kan främja hälsa och skapa livskvalité. Ett djur skulle kunna vara ett sätt att anpassa miljön omkring barnet med autism, då det visat sig att djurs närhet har en positiv effekt inom andra vårdområden. Djurterapins huvudområde är att minska sociala, emotionella och kognitiva problem i patientens handlingsplan. När ett barn har någon form av diagnos, blir hela familjen involverad i vården av barnet. Barnet med autism har också särskilt svårt att berätta om sina egna känslor och upplevelser, därför bygger den föreliggande studien på familjernas erfarenheter av djurens betydelse. Syfte: Att beskriva familjers erfarenheter av vilken betydelse djur har för barn med autism. Syftet var också att beskriva den metodologiska aspekten undersökningsgrupp i de inkluderade artiklarna. Metod: En deskriptiv litteraturstudie gjordes. Genom att använda sig av inklusionskriterier, exklusionskriterier och limits, valdes elva artiklar ut - nio kvantitativa och två tvärvetenskapliga - och granskades utifrån frågeställningarna som satts upp. Huvudresultat: Resultatet visade att djurterapi har stor betydelse för barnets sociala förmåga. Även positiva resultat sågs angående kommunikation, problemlösningsförmåga, repetativa beteenden, fysisk styrka och motorik. Undersökningsgrupperna var ojämna, då de hade en ojämn könsfördelning. Slutsats: Resultatet visade att djurterapi haft en positiv betydelse för barn med autism och deras sociala liv. Vidare forskning behövs göras för att göra djurterapi till en evidensbeprövad behandlingsform i framtiden. / Background: Previous research has shown that Animal Assisted Therapy (AAT) is an efficient method to increase the Sense of Coherence and Quality of Life in pediatric- and geriatric care. A person with autism needs to have an adapted environment to maintain cognitive functions which can promote health and promote Quality of Life. In this case, animals could be a means to create environmental adaptation for a child with autism, since animals have proven to have a positive effect on patients in other areas of care. The main purpose of the AAT is to reduce social, emotional and cognitive problems in the care-plan of the child. When a child has some kind of diagnosis, the whole family gets involved in the caring process. The child with autism also have difficulties to share feelings and life experiences. Therefore the present study is based on the experience of families regarding the importance of animals. Aim: To describe families experiences of the importance of animals for children with autism. The aim was also to describe the methodological aspect study group in the included articles. Method: A descriptive literature study was conducted. By using inclusion- and exclusion criterias and limits, eleven articles were chosen – nine with quantitative approach and two with interdiciplinary approach – and were reviewed on the basis of the chosen questions. Main result: The result has shown that AAT is of great importance for the childs social abilities. Also, positive results were shown in communication, problem solving skills, repetative behaviour, physical strength and motor skills. The study groups were uneven, as they had a gender bias. Conclusion: The results showed that AAT have had a positive effect for children with autism and their social life. More research is needed to make AAT an evidential form of treatment in the future.

<p>Optical coherence tomography (OCT) is a noninvasive three-dimensional interferometric imaging technique capable of achieving micrometer scale resolution. It is now a standard of care in ophthalmology, where it is used to improve the accuracy of early diagnosis, to better understand the source of pathophysiology, and to monitor disease progression and response to therapy. In particular, retinal imaging has been the most prevalent clinical application of OCT, but researchers and companies alike are developing OCT systems for cardiology, dermatology, dentistry, and many other medical and industrial applications. </p><p>Adaptive optics (AO) is a technique used to reduce monochromatic aberrations in optical instruments. It is used in astronomical telescopes, laser communications, high-power lasers, retinal imaging, optical fabrication and microscopy to improve system performance. Scanning laser ophthalmoscopy (SLO) is a noninvasive confocal imaging technique that produces high contrast two-dimensional retinal images. AO is combined with SLO (AOSLO) to compensate for the wavefront distortions caused by the optics of the eye, providing the ability to visualize the living retina with cellular resolution. AOSLO has shown great promise to advance the understanding of the etiology of retinal diseases on a cellular level.</p><p>Broadly, we endeavor to enhance the vision outcome of ophthalmic patients through improved diagnostics and personalized therapy. Toward this end, the objective of the work presented herein was the development of advanced techniques for increasing the imaging speed, reducing the form factor, and broadening the versatility of OCT and AOSLO. Despite our focus on applications in ophthalmology, the techniques developed could be applied to other medical and industrial applications. In this dissertation, a technique to quadruple the imaging speed of OCT was developed. This technique was demonstrated by imaging the retinas of healthy human subjects. A handheld, dual depth OCT system was developed. This system enabled sequential imaging of the anterior segment and retina of human eyes. Finally, handheld SLO/OCT systems were developed, culminating in the design of a handheld AOSLO system. This system has the potential to provide cellular level imaging of the human retina, resolving even the most densely packed foveal cones.</p> / Dissertation

De senaste åren har flyktingströmmen till Sverige ökat då många människor sökt asyl i landet. Flyktingar som fått permanent uppehållstillstånd i Sverige har påbörjat en krävande integrations- och etableringsprocess. Syftet med denna kvalitativa studie var att utifrån ett salutogent perspektiv utforska flyktingars upplevelser av att etablera sig i Sverige. Data insamlades via semistrukturerade intervjuer med fem deltagare som var inskrivna på en arbetsförberedande verksamhet. Materialet analyserades med Interpretative Phenomenological Analysis (IPA). Fem teman identifierades: Hantering, Aktivitet och sysselsättning, Förståelse, Drivkraft och motivation till livet i Sverige och Den sociala kontakten. Resultatet diskuterades i relation till Antonovskys Känsla Av Sammanhang (KASAM), Locus of control och tidigare forskning. Förslag på åtgärder vid olika etableringsinsatser var att flyktingar bör få tillgång till sociala sammanhang genom sysselsättning och svenska språkstudier samt att flyktingars värdegrunder bör utforskas för att kunna finna deras drivkrafter i vardagen. Slutsatsen var att trygghet och social gemenskap krävs för flyktingar, och när de behoven är tillgodosedda skapas en mottaglighet för utveckling vilket därigenom ökar välbefinnande och hälsa. / During recent years the influx of refugees has increased in Sweden where many individuals have applied for asylum in the country. Refugees that have received permanent residence permits in Sweden have begun demanding integration and establishment processes. The purpose of this qualitative study was to explore through a salutogenic perspective refugees experiences of settling in a new country. Data was collected using semistructured interviews with five participants registered in a job preparatory organization. The material was analyzed using Interpretative Phenomenological Analysis (IPA). Five themes were identified: Manageability, Activity and Occupation, Comprehensibility, Incentive and Motivation for a life in Sweden and Social contact. The results were discussed in relation to Antonovsky’s Sense of Coherence (SOC), Locus of control and previous research. Proposals for interventions in the establishment process were to let refugees receive access to social contexts through occupation and Swedish language studies and to explore the value-systems among refugees in order to find their life incentives. The conclusion was that security and social community are necessary for refugees, and when those needs are accommodated a receptability for development is formed which increases health and well-being as a result.

Providing a consistent view of the shared memory based on precise and well-defined semantics—memory consistency model—has been an enabling factor in the widespread acceptance and commercial success of shared-memory architectures. Moreover, cache coherence protocols have been employed by the hardware to remove from the programmers the burden of dealing with the memory inconsistency that emerges in the presence of the private caches. The principle behind all such cache coherence protocols is to guarantee that consistent values are read from the private caches at all times. In its most stringent form, a cache coherence protocol eagerly enforces two invariants before each data modification: i) no other core has a copy of the data in its private caches, and ii) all other cores know where to receive the consistent data should they need the data later. Nevertheless, by partly transferring the responsibility for maintaining those invariants to the programmers, commercial multicores have adopted weaker memory consistency models, namely the Total Store Order (TSO), in order to optimize the performance for more common cases. Moreover, memory models with more relaxed invariants have been proposed based on the observation that more and more software is written in compliance with the Data-Race-Free (DRF) semantics. The semantics of DRF software can be leveraged by the hardware to infer when data in the private caches might be inconsistent. As a result, hardware ignores the inconsistent data and retrieves the consistent data from the shared memory. DRF semantics therefore removes from the hardware the burden of eagerly enforcing the strong consistency invariants before each data modification. Instead, consistency is guaranteed only when needed. This results in manifold optimizations, such as reducing the energy consumption and improving the performance and scalability. The efficiency of detecting and discarding the inconsistent data is an important factor affecting the efficiency of such coherence protocols. For instance, discarding the consistent data does not affect the correctness, but results in performance loss and increased energy consumption. In this thesis we show how data classification can be leveraged as an effective tool to simplify the cache coherence based on the DRF semantics. In particular, we introduce simple but efficient hardware-based private/shared data classification techniques that can be used to efficiently detect the inconsistent data, thus enabling low-overhead and scalable cache coherence solutions based on the DRF semantics.

Bakgrund: Demenssjukdom är ett samlingsbegrepp för olika symtom och förändringar i hjärnan. Det är förknippat med stigande ålder men tillhör inte det normala åldrandet. Det finns inget botemedel mot demens endast symtomlindrande behandling. Demensdiagnosen påverkar inte bara individen med demenssjukdom utan även hens partner. Konflikter uppstod på grund av oförståelse och okunskap. Vårdandet av en person med demenssjukdom var ansträngande och svårigheter att tillfredsställa sina egna och livskamratens behov blev en del av vardagen.   Syfte: Syftet var att beskriva partnernas upplevelser av att leva med en person med demenssjukdom. Metod: Litteraturöversikt med kvalitativ design och deduktiv ansats. Antonovskys begrepp begriplighet, hanterbarhet och meningsfullhet har använts som teoretisk referensram. Vetenskapliga artiklar har analyserats utifrån Fribergs femstegsmodell. Resultat: Partner upplevde brister i information och stöd från hälso- och sjukvård. De kände rädsla, skuld, oro och ångest på grund av obegripligheten kring sjukdomsförloppet och framtiden. Livet uppfattades som svårt att hantera och frustrerande på grund av förlusten av den personen de levt med. Trots olika begränsningar hittade partner meningsfullhet i situationen och det skapade strategier som motiverade dem att fortsätta vårda sin livskamrat. Slutsatser: Vårdande partnernas hälsa, vardag och framtid påverkades av att leva med en person med demens. De riskerade sin egen hälsa, förlorade meningsfullt socialt umgänge samt att partnern kände osäkerhet inför framtiden. Trots det ville många partner fortsätta ta hand om sin livskamrat. / Background: Dementia is a collective term for various symptoms and changes in the brain. It is associated with increasing age but is not part of the normal aging process. There is no cure for dementia only symptomatic treatment. Dementia affects not only the individual with dementia but also the partner. Conflicts arose because of misunderstanding and lack of knowledge. The care of a person with dementia was demanding and difficulty in satisfying their own and the needs of their life partner became part of everyday life. Aim: The aim was to describe the partners ' experiences of living with a person with dementia. Method: Literature review with qualitative design and deductive approach. Antonovsky's concept of comprehensibility, manageability and meaningfulness has been used as a theoretical reference framework. Scientific articles have been analyzed according to Friberg's five-step model. Results: Partners experience lack of information and support from health care professionals. They feel fear, guilt and anxiety because of the uncertainty surrounding the progression of the disease and the future. Life was difficult to manage and frustrating due to loss of the person they have lived with. Despite various restrictions found in the partner situation and purpose created strategies that motivated them to continue caring for their life partner. Conclusions: The caring partners ' health, everyday lives and futures were affected by living with a demented life partner. The partners risked their own health, lost meaningful social intercourse, and felt uncertainty about the future. Despite that, many partners would continue to take care of their life partner.

Tidigare forskning menar att det äldsta syskonet anses vara mer auktoritärt, det mellersta barnet minst familjeorienterat och det yngsta barnet mer socialt. Uppväxten kan påverka individens KASAM. Studien undersöker om syskonplacering samverkar med människors KASAM, personlighet utifrån femfaktormodellen samt ser till eventuella könsskillnader. Urvalet bestod av högskolestudenter, varav 145 kvinnor och 80 män. Enkätens material analyserades med tvåvägs variansanalyser. Studien uppvisade ingen signifikant skillnad mellan de tre syskonplaceringarna. En tendens till signifikant interaktion visades mellan könen, där kvinnliga mellanbarn har lägre KASAM än de manliga. Studien visade två signifikanta könsskillnader mellan kvinnor och män. Kvinnorna var mer neurotiska och samvetsgranna än männen. Resultatet uppvisade en tendens till signifikans, gällande att kvinnor hade högre grad av personlighetfaktorn öppenhet än männen. Slutligen konstaterades att syskonplaceringen inte samverkar med individens personlighet eller KASAM, men att det finns vissa personlighetsskillnader mellan könen. Resultatet kan bero på brister i studien, som att familjekonstellation inte tillfrågades deltagarna.