潛在群體分析及對應分析是在探討多個類別變數間關係常用的兩種分析方法，因其運用之領域不同，解說之方式不一，以致過去常被認為是兩種不相關的分析方法，然而實際卻非如此。本研究之目的係就雙變數及多變數的情況，針對這兩種分析方法間之關係作詳細的探討，並說明其對等及不對等的時機。 / Latent class analysis and correspondence analysis are two well-known methods that can be used to study the relationship between categorical variables. Since the two were developed and applied in two different fields in the past, they were never thought to be related. In this study, we examine the relationship between the two in more details. We further point out the situations where they are equivalent, and where they are not.

The aim of this dissertation is to study segregation within the Swedish school system, with regard to the reformation during the last decades of the 20th century which researchers have described as a system change. After an initial research survey two questions are identified: one which concerns the process of human becoming, and the other concerning segregation, within and between social milieus in a school system. The first is answered from a relationistic philosophical perspective, which leads to the study object the educative milieu. In turn the study object leads to the development of a research approach to investigate such settings. The research approach consists in the construction of epistemic objects (in short: epiobjects) – in this case two school classes whose pupils have actively made the choice of these classes – understood as monistic entities constituted of internal relational structures. The construction of the epiobjects identifies the families involved in the classes as informants and decides on a number of research themes (for example description of the school, the teachers, leisure activities) for the data collection. The disposition of the study consists of tree main steps: determining relevant symbols, positioning and description. Determining relevant symbols means to decide what is assigned meaning in respect of the research themes. This was achieved through an interview study. Positioning means to decide how the symbols and bodies are distributed within the epiobjects in order to represent their relational structures. This was done with questionnaire data that was organised with aid of correspondence analysis. In the description the epiobjects can be understood as educative milieus, by focusing on their educative tensions and doxa. Educative tensions are differences between positions in the epiobjects relational structure, while doxa are areas of agreement. The analysis shows that the epiobjects are obviously different in terms of educative tensions and doxa. The main difference between the epiobjects concern the families’ motives for the choice they have made: families in one class maintained they chose the school because of its subject specialisation, while families in the other claimed that they sought a school characterised by orderly behaviour and a better learning of subject knowledge and skills. Associated with these differences are dissimilarities concerning, for instance, political orientation, education level, income, democracy, freedom of choice, as well as regarding inclination to attend different kinds of cultural events and institutions. The results can be seen as an illustration of how a system of freedom of choice leads to segregation, by orienting people with dissimilar preferences to different alternatives while, at the same time, these preferences concerning school choice correspond with differences in other areas of life.

In this study, the hydrology and physical, chemical and biological variables of a shallow lake system including the Lakes Mogan and Eymir between 1997-2005 were evaluated. In Lake Eymir, a biomanipulation study was conducted between August, 1998 &ndash / December, 1999. Upon biomanipulation, Lake Eymir shifted to clearwater state with submerged vegetation domination during 2000-2003. However, in 2004, the lake shifted back to algae-dominated turbid state since the buffer mechanisms provided by submerged plants were absent. In the summer of 2005, fish kills were observed due to algal bloom. However, due to increasing hydraulic residence time in the lake, internal processes became more important for nutrients. Lake Mogan faces seasonal and interannual water level fluctuations. During the low water levels experienced in 2001 and 2005, which coincided with the high hydraulic residence times, the in-lake phosphorus amount was controlled by internal processes rather than external loading. Moreover, results revealed that hydrology and submerged plants were important in the ecology of Lake Mogan. Furthermore, the relationship between the phytoplankton, zooplankton and the environment in Lakes Eymir and Mogan, which was predicted via Canonical Corresponding Analysis, revealed that nutrients and water transparency were both important for plankton communities. Both the top-down and bottom up effects were valid in Lake Eymir, while only the bottom-up effect and submerged plants were important for Lake Mogan. Finally, the present study provided a good example for the submerged plant dominated clearwater state triggered by biomanipulation, and the impact of hydrology on the ecology of shallow lakes.

This thesis is an investigation of external biosecurity and its application to risk-based surveillance approaches in the southern Ontario swine industry. In each of two datasets, the best number of groups to describe biosecurity practices was identified, resulting in two groups with high biosecurity standards and one group with low biosecurity standards. Multinomial logistic regression models identified herd density, herd size, and herd type among significant predictors of biosecurity group membership. A map of southern Ontario that can be used as a tool in the risk-based surveillance of contagious swine diseases was developed using geographic information about swine density, and the distribution of herds belonging to the high biosecurity groups. Finally, multiple correspondence analysis examined how individual biosecurity practices form strategies on sow farms. Some practices that are generally considered high-risk were closely associated with other practices that mitigate the risk, suggesting that evaluation of the overall strategy is essential for complete assessment of biosecurity. / The Ontario Ministry of Agriculture, Food and Rural Affairs (under the Emergency Management research theme); Ontario Pork; the Ontario Pork Industry Council's Swine Health Advisory Board; the Natural Sciences and Engineering Research Council of Canada;

This study analyses differences between student groups at Umeå University, Sweden, and the University of Wisconsin-Madison, USA. It analyses student study situations, students’ experience of the university environment, students’ exercise and sports activities, and connections between study and leisure-time activities. The study owes much to Bourdieu’s Homo Academicus (English edition 1988), and his theories of cultural reproduction, social structures and habitus, and focuses on students from the subject areas teacher education, natural sciences, humanities and sports. Attention is also given to family backgrounds and female/male variance. The data were collected in 1994-1995, with the aid of 782 questionnaires and 64 interviews. The results show differences between students at the two universities in terms of study time, parents’ education and leisure activities and part-time jobs. Students in the studied groups, differ in many respects. The groups have distinct characteristics in terms of, for example, age and sex ratios. The students’ family backgrounds are also divergent, depending on which discipline the student belongs to. These variations between disciplines are found at both universities. Physical activities (action sports) are popular activities, at both universities. Women and men exercise in different ways, although they might have a similar social situation. The scientific methodology of Bourdieu is also discussed in the study. In sum, the results indicate that there are sub-fields within the university. Individuals with different conditions and habitus, to use Bourdieu’s terminology, inhabit these sub-fields.

This study is about the school teachers’ positions in contemporary Swedish society. In order to grasp the social characteristics of their profession and its transformations it has been important to conduct thorough analyses of the recruitment of teacher students and the recruitment to the teaching professions. The explanations to the findings are mainly based on analyses of how different kinds of assets – such as for example cultural capital and educational capital – are distributed among the students and within the school teacher corps. The data material consists of individual based statistic of all teachers 1978–2008 and all students enrolled in higher education 1977–2009, and of interviews with teachers and students. Regarding theory and methods, the study belongs to the sociological tradition founded by Pierre Bourdieu, which means that capital, strategies and social space are key concepts. The statistical techniques employed comprise mainly of different variants of correspondence analysis as well as logistic regression. As shown in the first part of the thesis an increasing share of the teacher students possess small amounts of acquired school capital, as well as weak resources inherited from their parental home. This change has been especially noticeable within the programmes educating upper secondary school teachers. In the second part, the focus is on the social positions of those upper secondary teachers. The correspondence analyses indicate a cleavage within the profession based on the teachers’ qualification and merits. Teachers richer in educational capital tend to occupy more stable professional positions and are also overrepresented at schools where the pupils feature significant educational and social assets, which in turn further contributes to the density of educational capital. One of the main results is that school teachers have been exposed to two partly opposing processes during the past decades. On the one hand, there has been increasing homogeneity, namely convergences between the employment conditions of different categories of school teachers and between different teacher education programmes. On the other hand, the social divergences within the profession tend to widen. Those gaps have increased over time because of the more differentiated school system and changes in recruitment patterns.

Thesis (M.A. (Tourism))--North-West University, Potchefstroom Campus, 2009.

Thesis (M.A. (Tourism))--North-West University, Potchefstroom Campus, 2009.

This thesis focuses on changes in the value of educational capital over time. Taking as a point of departure Pierre Bourdieu’s notion of a multidimensional social space, the thesis examines how this value is affected when educational assets—through the democratization of education—are becoming more widespread across this space (i.e. the population). The studies are based on datasets from Statistics Sweden, comprising the complete censuses of 1960 to 1990, LISA-registers, and registers of wealth and income. Different approaches are employed: the use of the Gini-coefficient to catch changes in the distribution of education; comparative models to investigate cohorts at different points in time; and specific multiple correspondence analysis to study the distribution of several assets simultaneously.  Three aspects are explored: the distributions, returns, and uses of education. Firstly, while there is a steady increase in the average number of years of schooling, there is a different pattern in the development of the distribution of education. Three phases were distinguished: one of increasing levels of inequality, one of decreasing inequality, and one in which the inequality levelled out. Secondly, the returns of education have diminished as far as economic gains are concerned, causing a fracture between different social generations, at the same time as the returns in a wider social sense have remained relatively stable. However, the relative stability hides crucial discrepancies. Groups with the lowest level of education are further marginalized and distances between ‘economic’ and ‘cultural’ groups are growing. Thirdly, in their modes of using the educational system, there are glaring differences between the economic elite and the cultural elite, although both utilize prestigious educational institutions as sites of social reproduction. The fundamental difference consists in that exclusive educational strategies are not as necessary to the dominant fraction of the economic elite. Their children are able to choose more freely among the offers of higher education.  The paradoxical development of the value of education is that while the absolute value of educational capital has decreased in general, the differences in relative value persist.

This is a sociological study of the views of officers in the Swedish Army and its Amphibious Forces on tactics in Irregular Warfare (IW), in particular, Counterinsurgency (COIN). IW comprises struggles, where the military weaker part uses an indirect approach with smaller units and integrates the civilian and military dimensions in a violence spectrum including subversion, terrorism, Guerrilla Warfare and infantry actions. IW is the main armed warfare style in insurgencies. COIN is the combined political, military, economic, social and legal actions in counter insurgencies. Data has been collected by means of interviews with almost all (n =43) officers, who were either commanding battalions or rifle and manoeuvre companies while undergoing training for general warfare and international operations. The main theoretical and methodological inspiration is the traditional one for research on social fields, inaugurated by the French sociologist Pierre Bourdieu. The statistical technique used is Multiple Correspondence Analysis. As a background and context base, an inquiry inspired by the Begriffsgechichte (Conceptual History) tradition explores the genesis and development of understandings of the term Irregular Warfare. The research question is outlined as; “how can contemporary Swedish military thought on tactics in Irregular Warfare be characterized using descriptive patterns, mapped in relation to background factors and normative standards? The most significant findings are that there are two main opposing notions separating the officers’ views on tactics in Irregular Warfare: (1) a focus on larger, combat oriented and collectively operating military units versus smaller and larger, more intelligence oriented and dispersed operating units, and (2) a focus on military tasks and kinetic effects versus military and civilian tasks as well as “soft” effects. The distribution of these views can be presented as a two-dimensional space structured by the two axes. This space represents four categories of tactics, partly diverging from normative military standards for Counterinsurgency. This social space of standpoints shows different structural tendencies for background factors of social and cultural character, particularly dominant concerning military backgrounds, international mission experiences and civilian education. Compared to military standards for Counterinsurgency, the two tactical types characterized by a Regular Warfare mind-set stands out as counter-normative. Signs of creative thought on military practice and theory, as well as a still persistent Regular Warfare doxa are apparent. Power struggles might thus develop, effecting the transformation to a broadened warfare culture with an enhanced focus also on Irregular Warfare. The result does not support research results arguing for a convergence of military thought in the European transformation of Armed Forces. The main argument goes beyond tactics and suggests sociological analysis on reciprocal effects regarding strategy, operational art, tactics as well as leadership, concerning the mind-set and preferences for Regular, Irregular and Hybrid Warfare.