This thesis is concerned with the nature of the peer group experience and friendship patterns amongst a sample of 3rd, 4th and 5th year secondary school pupils. The thesis has four parts and a General Introduction in which the need for more sociological research in the area of the peer group and friendship is asserted. Certain themes are developed in relation to the peer group and friendship, and arguments for the research established. In the final part of the General Introduction consideration is given to the nature of the sociology of youth in relation to social class and age grading in society. Part One has three Chapters. The first deals with recent research into the peer group, most of which is American in origin with the exception of certain ethnographic studies which have been published in this country over the last few years. In Chapter Two research into friendship is considered with Chapter Three providing a critical evaluation of the research presented. A general schema is provided, drawing on the literature review which provides the basis for the development of research methods and the subsequent research programme. Part Two establishes the basis for the thesis research and has one chapter. Four objectives are explored. The first concerns the importance of friendship to young people, the second with levels of friendship, the third with deriving definitions of friendship. The final objective examines the effects of age and sex on friendship and is compared with the findings from four significant studies undertaken in this area. Sociometry is considered in relation to "mapping" a group, a self esteem inventory is developed and the Higher Schools Personality Questionnaire evaluated with a view to measuring a number of personality traits. In Chapter Five of Part Three a research design for quantitative and qualitative research is presented. The data are presented in Chapters Six and Seven. 371 young people completed a questionnaire into their friendship and peer relations and two peer groups were intensively involved in group discussion in an endeavour to provide more detailed information on friendship and peer activities. The final part, Chapter Eight, is devoted to a detailed consideration of the findings from the research in the light of the established objectives. An appraisal is undertaken of the extent to which new knowledge has been provided in the social sciences regarding the peer group and friendship.

This thesis explored cognitive, psychosocial, and physical domains of wellbeing to find out their contribution to successful ageing in 70-year old individuals. Discovering groups with different patterns of wellbeing and their correlates may be informative about what constitutes success in old age. The objectives were to find out whether distinct groups within and across domains of wellbeing existed, and to find out the variables associated with the resulting groups. Using a cross-sectional design on the Lothian Birth Cohort 1936 (LBC1936, maximum n = 1091), which is a group of community-dwelling 70 year-olds, latent class analysis (LCA) was used to explore possible patterns of ageing in domains of cognitive, psychosocial, and physical function. Demographic, personality, and lifestyle variables that were not used in the LCA were used to characterise the resulting groups. The first study investigated cognitive ability. Individuals were grouped according to their scores on general cognitive ability (g), memory, and speed. I accepted a 3-group solution, including High- (n = 749, 69%), Average- (n = 303, 28%), and Low- (n = 39, 4%) cognition groups. Results indicated the presence of a strong dimension: people who did well on one component also did well on others, and failed to show any indication of uneven patterns of scores. In the second study on psychosocial wellbeing individuals were grouped according to their scores on physical function, quality of life, and emotional wellbeing. A 5-group solution was accepted. High (n =515, 42.7%), Average (n = 417, 38.3%), and Poor (n = 37, 3.4%) Wellbeing groups were identified; however, contrasting patterns of wellbeing across components were noticed in the two other groups: one group scored relatively highly on physical function, but low on emotional wellbeing (High Function/ Low Spirits, n = 60, 5.5%), while another group showed low physical function but relatively high emotional wellbeing (Low Function/High Spirits, n = 62, 5.7%). The next study investigated the physical fitness domain: groups were determined on physical fitness, lack of inflammation, and lack of morbidity. Two groups, High Physical Fitness (n = 757, 73.3%) and Low Physical Fitness (n = 291, 26.7%) were identified, which, like the cognitive domain, also indicated a continuous pattern of wellbeing. In the final study individuals were grouped according to their scores on all variables reflecting cognitive, psychosocial, and physical function. I identified 3 groups showing high or uneven patterns of wellbeing. The majority of individuals fell in the High Wellbeing group (n = 712, 65.3%). The two other groups contained either individuals scoring high on cognitive measures but poorly on psychosocial and physical measures (the Low Bio-Psychosocial group, n = 158, 14.5%), or individuals scoring low on cognitive measures but highly on psychosocial and physical measures (the Low Cognition group, n = 221, 20.3%). Intelligence, personality and health behaviours showed salient differences amongst the groups in all studies. Overall, high childhood cognitive ability, low scores on Neuroticism, and avoiding smoking were associated with high wellbeing. Overall, results demonstrated that although wellbeing in old age is primarily dimensional, there is evidence of groups showing uneven patterns of function, indicating that individuals could show relatively successful patterns in some areas of wellbeing despite relatively poor functioning in other areas. Awareness of the importance of lifelong intelligence and personality traits and health practices to later-life wellbeing amongst health-care professionals and policymakers may help address risk-prevention, and improve compliance and patient-practitioner relationships to reduce health inequalities.

Improvisation är ett ämne som många både studerar och utövar men det är ofta svårt att hitta mer generella strategier för att improvisera som visar hur själva improvisationsprocessen går till. Syftet med studien är att hitta de strategier jag använder mig av när jag improviserar. Genom att analysera ett solo jag spelar och leta efter; de förutsättningar som påverkar improvisationen, strategier jag använder och förhållningssätt jag har till improvisation klargör den här studien en del av vad det innebär att improvisera fram musik. Den metod jag använt är videoinspelning där jag spelat in ett uppspel som jag anser är den naturliga miljö för mig att improvisera i. Det teoretiska perspektiv jag använt är fenomenologi. Resultaten visar att en improvisation är ett resultat av att en improvisatörs estetiska val av toner byggs ihop till olika mönster. Dessa mönster kommer från idéer som är grundade i improvisatörens förkunskaper, ens kunskapsbas. För att maximera användandet av denna kunskapsbas framkommer det i studien att jag som improvisatör har kunskap om stilen ifråga samt har förmågan att använda mitt instrumentalgehör i kombination med mina tekniska färdigheter. Därigenom frambringar jag toner och fraser på mitt instrument utifrån de idéer jag hör i huvudet. Denna studie presenterar användbara begrepp för att diskutera den process som är improvisation utifrån ett jazz/fusion-perspektiv. / Improvisation is a topic, which many both study and practice but it's often difficult to find more general strategies on how to improvise and which shows the improvisational process. The purpose of this study is to find the strategies I use when I improvise. By analyzing a solo I play while looking for; conditions that affect the improvisation, strategies I use and the approach I have towards improvisation this study clarifies a part of what it means to improvise music. The method I have used is video recording where I have recorded a concert, which may be considered the natural environment in which I improvise. The theoretical perspective I have used is phenomenology. The results show that an improvisation is a result of the improviser’s aesthetic selection of tones that is combined into different patterns. These patterns come from ideas based of the improvisers previous knowledge, his/hers base of knowledge. To maximize the use of one's base of knowledge this study reveals that I as an improviser have knowledge about the style at hand as well as the ability to use my "instrumental ear" in combination with my technical skills. I thereby produce tones and phrases on the instrument from the ideas I hear in my head. This study presents useful concepts to be able to discuss this process of improvisation from a jazz/fusion-perspective.

A revision and a phylogenetic analysis of the genera Zelomorpha Ashmead, 1900 and Hemichoma Enderlein, 1920 were conducted. Phylogenetic analyses used molecular and morphological data. A total of 39 sequences were obtained for COI (887 bases long) and 57 for 28S (1254 bases long). DNA sequences were aligned manually and also aligned with ClustalW (Thompson et al. 1997). Parsimony, Maximum Likelihood, and Bayesian approaches were applied to phylogenetic analyses with each gene region analyzed separately and in a combined analysis. The phylogenetic analysis analyses supported the monophyletic status of the genera Zelomorpha, as defined by Sharkey et al. (2006), and Hemichoma; they upholdseld the hypothesis that the the New World species formerly placed in Biroia belonged to Zelomorpha, and corroborated the synonomy ofgenus Dichelosus with Zelomorpha (Sarmiento and Sharkey, 2005). A total of 3,242 specimens of Hemichoma and Zelomorpha collected through the New World representing 113 species were examined. In addition to the 29 species of Zelomorpha described originally in diverse genera and now moved into the Zelomorpha, 74 new species are described. Seven new species are described for the genus Hemichoma for a total of 10 species. All species are fully redescribed. Fully illustrated keys to the species of Zelomorpha and Hemichoma are provided. The phylogenetic results based on maximum parsimony suggest that, despite the colorful nature of the sister group Hemichoma, species of Zelomorpha were nocturnal and became diurnal secondarily in one lineage. The change to diurnality is linked to a decrease in eye size, to an increase in body size, and to the emergence of colorful patterns. Palatability field tests using lizards as predators of Zelomorpha concinna, a common species with one of the more characteristic and bright color patterns, suggest that the coloration has a warning function and that this wasp is highly unpalatable. Evidence was found that the short ventrally curved ovipositor is an effective defensive structure. DISCLAIMER: The text of this dissertation does not constitute the publication of new species as defined by the International Code of Zoological Nomenclature. The newly estrablished species names in this work will be/have been recognized as valid upon their publication in a peer-reviewed journal.

This thesis investigates the patterns of each type of energy consumption for fourteen countries, to study the link between energy consumption, economics and population. It was found that for all the countries studied, there is a decrease in energy consumption relative to economic growth. This shows that the world has become less energy based, and is more efficient in using energy to produce economic wealth. The carbon dioxide (CO₂) emissions for each fossil fuel type used for electricity generation in New Zealand: coal, gas and oil was also calculated. Gas is the main contributor of CO₂ by electricity generation for New Zealand. New Zealand's CO₂ emissions from electricity generation have nearly tripled in the last 12 years. Despite the environmental concerns of global warming and the Kyoto protocol, there has been a large increase in total CO₂ emitted. This increase has seen a replacement of gas by coal in order to continue to meet the electricity demand of the nation. New Zealand has a small energy market relative to the global market. World energy market patterns show a recent history of oil declining, coal declining, gas increasing and the significant presence of nuclear. Renewable energies are insignificant on the world scene. These are marked contrasts to the New Zealand scene. Of the renewable energy supply fuels, both hydro and geothermal have been in decline, from before deregulation. This trend will continue in the future if left to market forces. Although renewable energy may be a solution to New Zealand's energy supply, the increase in market share of other renewable energies to date is limited. They are unlikely to be sufficient to cover New Zealand's energy demand in the near future. With New Zealand being dependent on the world supply of oil, the expected depletion of the Maui gas field, the low market share for renewable energy and rising concerns about pollution, the green house effects and global warming, nuclear power is considered an option in New Zealand.

Males of many species have elaborate phenotypes that are absent in females and that are thought to be the result of sexual selection. Sexual selection requires: (i) variance in male mating success, (ii) variation in male phenotype, and (iii) covariation between male mating success and male phenotype. Environmental conditions influence these factors, and management practices that alter environmental conditions have the potential to shape mating patterns and sexual selection. I investigated the hypothesis that the frequency of fire, used to manage tallgrass prairie, affects the mating patterns and process of sexual selection in the organisms breeding in managed prairies. I studied dickcissels (Spiza americana), a small songbird resident in tallgrass prairie. I first examined mating patterns and sexual selection in dickcissels independent of burning regime. I found variation among males in the number of mates attracted, in the number of offspring sired with each mate, and the offspring sired with the mates of other males. I found a positive association between social mates and siring success, but no evidence for an effect of breeding density or synchronous nesting on mating success. Male dimorphic traits, size, song, and plumage, showed between-individual variation but selection gradients were weak and often fluctuated between the years of study. I next examined patterns of mating success in plots burned on a variable schedule. I found little evidence that burning influenced either the mean or the variance in social mating success, paternity, or male phenotype. Burning regime also had no influence on sexual selection gradients with the single exception of selection on tarsus length. Temporal variation was more important for patterns of mating success and sexual selection gradients on male traits than was burning regime. The demography of dickcissels in the breeding season suggests, however, that habitat management on a larger scale may be more influential. My findings extend our understanding of sexual selection in birds and the effects of management on the factors required for sexual selection and the magnitude of selection.

The Navahos have undergone extensive culture change through acculturation that began with their conquest and containment by the U. S. government in 1863. This is not the complete explanation for all Navaho culture change. For instance, in the area of arts, innovation or internallyderived change is evidenced by the replacement of traditional approaches to weaving design by designs that had been exclusively relegated to ceremonial usage within the context of the sandpainting medium.It is the purpose of this work to examine the artist's role during this transition period to determine what internal factors affected the changes. Historical accounts offer ethnographic information concerning the innovation of four design types that had traditionally been exclusively used in ritual as sandpainting designs. This information will be presented and used in an analysis of the weaver in Navaho society; the role of the ritual specialist; the function of weaving in Navaho society and group response to weaving and the weaver. Finally, an appraisal of the specific cases with respect to the analytical framework will be offered in conclusion to validate the role of internal innovation.

In an increasingly changing environment, different organizations are trying to improve their agility and efficiency by improving their business processes; thus, business process management has been gaining momentum for the last decade. The first step in business process management is the modeling of business processes. Business Process Modeling (BPM), in itself, is very important because it captures business requirements, allows for better understanding of a business and its processes, facilitates communication between business analysts and IT people, and pinpoints deficiencies in processes. It also serves as a basis for automation of these processes. But business process modeling comes with its own challenges since it is a time-consuming, complicated, and error-prone task. As a result, producing a high quality, precise business process model is not easy. BPM patterns, which are general reusable solutions to commonly occurring problems in business process modeling, have been proposed to address these challenges. In this research, we conducted an exploratory study about requirements engineering practices in a large organization. This study identified key challenges in requirements engineering and showed how business process modeling is currently being conducted. Then, we created a survey of the different BPM pattern catalogs existing in the literature. Finally, we presented one of the BPM pattern catalogs in a clear format along with examples of each pattern. The ultimate objective is to allow business analysts to effectively use BPM patterns while creating precise BP models.

How patterns arise from an apparently uniform group of cells is one of the classical problems in developmental biology. The mechanism is complicated by the fact that patterning occurs on a growing medium. Therefore, changes in an organism’s size and shape affect the patterning processes. In turn, patterning itself may affect growth. This interaction between growth and patterning leads to the generation of complex shapes and structures from simpler ones. Studying such interactions requires the possibility to monitor both processes in vivo. To this end, we developed a new technique to monitor and quantify vein patterning in a growing leaf over time using the leaves of Arabidopsis thaliana as a model system. We used a transgenic line with fluorescent markers associated with the venation. Individual leaves are followed in many samples in vivo through time-lapse imaging. Custom-made software allowed us to extract the leaf surface and vein pattern from images of each leaf at each time point. Then average spatial maps from multiple samples that were generated revealed spatio-temporal gradients. Our quantitative description of wild type vein patterns during leaf development revealed that there is no constant size at which a part of tissue enclosed by vasculature will become irrigated by a new vein. Instead, it seemed that vein formation depends on the growth rate of the tissue. This is the first time that vein patterning in growing leaves was quantified. The techniques developed will later be used to explore the interaction between growth and patterning through a variety of approaches, including mutant analysis, pharmacological treatments and variation of environmental conditions.

Physical activity (PA) is likely to constitute an important aspect of health-related behaviour in growing children. However, the knowledge on levels and patterns of PA in children is limited, due to the difficulty of precisely measuring this complex behaviour in normal daily living. Information on variables that significantly contributes to the variability in PA patterns is warranted as it may inform strategies for promoting physically active lifestyles in school-age youth. The overall purpose of the present studies was to increase the knowledge about the use of accelerometry when assessing PA in children, and examine sources of variability in objectively assessed PA behaviour in children. The study samples included 1954 nine- and 15-year-old children from four geographical locations in Europe (Norway, Denmark, Estonia and Portugal), and additionally 16 Swedish seven-year-old boys and girls. PA was assessed by the MTI accelerometer during free-living conditions, including both weekdays and weekend days. A part of the PA assessment was conducted using different time sampling intervals (epochs). Predictions of estimates of daily energy expenditure from accelerometer output were calculated using previously published equations. Potential correlates of PA behaviour were assessed by self-report. The main findings were; a) the epoch setting had a significant effect when interpreting time spent at higher intensities of PA in young children, b) predicted energy expenditure differed substantially between equations, c) between- and within-day differences in overall levels of PA, time spent at moderate-to-vigorous intensity physical activity and time spent sedentary differed between age, gender and geographical location, d) outdoor play and sports participation were differentially associated with objectively measured PA in 9- and 15-year-old children. It is concluded that the sporadic nature of children’s physical activity require very short epoch settings for detecting high intensity PA, and that different published equations for estimations of daily energy expenditure cannot be used interchangeably. The interpretations of average energy expenditure from available equations should be made with caution. Based on a large sample of children of different ages, weekend days and leisure time during weekdays seem appropriate targets when promoting PA in order to increase the proportion of children achieving current recommendations on health enhancing PA. Further, significant correlates of PA behaviour dependent on age group are presented, which should be considered when planning interventions for promoting PA in school-age youth.