Classical partitioning problems, like the Max-Cut problem, ask for partitions that optimize one quantity, which are important to such fields as VLSI design, combinatorial optimization, and computer science. Judicious partitioning problems on graphs or hypergraphs ask for partitions that optimize several quantities simultaneously. In this dissertation, we work on judicious partitions of graphs and hypergraphs, and solve or asymptotically solve several open problems of Bollobas and Scott on judicious partitions, using the probabilistic method and extremal techniques.

Graphing calculator programs have been used on high-stakes tests and teacher-created assessments at the secondary and college level for many years. These programs- are even used on college-placement tests such as the ACT. Beginning with the 2011-2012 school year, the Mississippi Department of Education (MDE) made the decision to no longer allow the use of graphing calculator applications and/or programs on the Subject Area Testing Program (SATP2) for Algebra I. Currently, limited research exists to address the influence of graphing calculator program use on high-stakes assessments. The programming capabilities of graphing calculators should not be ignored. Because of the 2011-2012 graphing calculator policy change, a unique opportunity exists in Mississippi to provide valuable information about this issue. Gaining insight about how the use of graphing calculator programs has affected assessment results in the past will give policy makers needed information for creating equitable assessment policies in the future. This research used a causal-comparative research design to determine the influence of the MDE’s decision to no longer allow the use of graphing calculator programs on Mississippi’s Algebra I SATP2. The research questions consider the influence of the policy change with regards to three groups: students, schools in general, and Title I schools in particular. A chi-square test for association was used to examine the student-level data associated with research questions one and two. This analysis examined students’ ability to pass and their performance level on the Algebra I SATP2. The results for both of the chi-square analyses indicated significant results. For research question three, a two-way mixed ANOVA was used to examine the influence of the policy change on Title I schools. For this analysis, Title I schools represent disadvantaged populations. The results indicated no interaction between graphing calculator program use and type of school, but did reveal a main effect for the school type.

Evaluation of a Middle School Positive Behavior Intervention Support Program by Tracie Grogan EdS, Mercer University MA, Fort Valley State University BS, University of Georgia Doctoral Study Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Education Curriculum Instruction and Assessment Walden University July 2016 School leaders at a middle school in a rural school district in Georgia were looking for ways to reduce poor student behavior, which has a negative impact on school climate. Judicious Discipline, a program based on Kohlberg's 6 stages of moral development, Bandura's social learning theory, and the 3 constitutional rights of freedom, justice, and equality, were implemented at the school by a group of 8th grade teachers. Since no evaluation had been conducted to examine the efficacy of this program, the purpose of this doctoral study was to examine the program's strengths, weaknesses, and impact on student behavior, as well as to recommend any needed changes. A mixed methods design, was used including a formative and a summative evaluation component. Data for the formative component were collected and analyzed using descriptive statistics for teacher surveys (n = 9) and open coding for teacher interviews (n = 3). Data for the summative component were collected and analyzed using a Chi-Square Test of Independence to examine the change in the distribution (pre to post program), of students participating in JD (n= 148) along the Kohlberg levels of social development scale. This instrument consists of forced-choice items designed to measure the extent to which the student has reached a level of full autonomy so that they are intrinsically motivated to abide by the rules without the guidance of a teacher. Findings revealed that the intervention had a positive impact on student behavior, both from the teacher perspective and from evidence of student growth on the social development scale. Implications for positive social change included: (a) improved student behaviors, and (b) fewer behavioral referrals. The findings along with recommendations for change were presented to school leaders in the form of an executive summary.

The purpose of this thesis has been to illustrate the conditions for development of judgement-based professional skill, by means of institutionalised officer training. The study has been based on two questions: 1) What is, in the context of the exercise of the officer profession and the military school environment, the nature and epistemological foundations of the judicious action? 2) In what way can institutionalised officer training ensure the development of the judgment of future military leaders?This study is presented in the form of a scientific essay, departing from a personally experienced dilemma, which subsequently gets subjected to personal reflection as well as theoretical analysis, in which the author acts as both the subject and the object. The explo-ration has its starting point in the assumption that there is a decisive difference between knowing-that, knowing-how and knowing what, of which especially the latter requires judge-ment. Through a survey of the epistemological concepts of Aristotle and of Maria Hammarén applied to the professional skill of the officer and the military school environment, it is estab-lished that the judicious action is an indispensable part of the professional skill and that per-sonal judgement in its turn is a trained ability, first of all shown in action. A conclusion in this respect is that an officer needs the ability to make judicious decisions based on intuition as well as on analytical thinking, depending on the situation. The author puts Hammarén’s ideas of professional skill being developed through a combination of experience and reflection preferably organised in a reflecting practice, in the context of the military teacher.Another conclusion is that the judgement in (not least the military) professional skill in fact is the sound judgement, i.e. the ability to make and implement ethically well-founded decisions. This subject is further explored in relation partly to Hannah Arendt’s ideas of the role of sound judgement in a bureaucratic organisation, and partly to moral philosophical theories, put in the context of military professional skill and school environment. A conclu-sion is that the ethical education must aim at developing the willingness to do good, as well as the eye for judging what actions being morally right in a certain situation.The author also presents possible methods for establishing a reflective praxis within a military school environment.

The objectives of this study were to establish the effectiveness of chlorpyrifos in suppressing H. armigera population in oranges and to determine the effect chlorpyrifos had on the health of farm pesticide operators. Experiments showed that by applying chlorpyrifos on orange trees, H. armigera larvae population was suppressed significantly. High fruit yields were realized from trees that were sprayed with chlorpyrifos. Visual observation of personnel involved in pesticide related duties, revealed that judicious use of pesticides was not practiced by farm workers in all three farms. Data analysis from questionnaires, health records and interviews proved that farm workers suffered from illnesses that were pesticide related. It was mainly those farm workers in the age group of 31 to 35 years who suffered the most from pesticide related illnesses. / Agriculture and Life Sciences / M. Sc. (Agriculture)

The objectives of this study were to establish the effectiveness of chlorpyrifos in suppressing H. armigera population in oranges and to determine the effect chlorpyrifos had on the health of farm pesticide operators. Experiments showed that by applying chlorpyrifos on orange trees, H. armigera larvae population was suppressed significantly. High fruit yields were realized from trees that were sprayed with chlorpyrifos. Visual observation of personnel involved in pesticide related duties, revealed that judicious use of pesticides was not practiced by farm workers in all three farms. Data analysis from questionnaires, health records and interviews proved that farm workers suffered from illnesses that were pesticide related. It was mainly those farm workers in the age group of 31 to 35 years who suffered the most from pesticide related illnesses. / Agriculture and Life Sciences / M. Sc. (Agriculture)

Le problème croissant de l’antibiorésistance fait en sorte que l'utilisation systématique des antibiotiques en production animale n'est plus considérée comme une pratique raisonnable et viable. De plus, la préservation de l'efficacité des antibiotiques représente un enjeu majeur pour la santé publique et la santé animale. Les Producteurs de poulet du Canada ont élaboré et mis en place une stratégie de réduction de l'utilisation des antibiotiques ayant comme objectif ultime d'éliminer l'utilisation préventive des antibiotiques d’importance en médecine humaine dans les productions de poulets à griller et de dindons. Alors que l’on sait que la réduction des antibiotiques en élevage de poulets de chair est associée à une augmentation de l’incidence d’entérite nécrotique causée par Clostridium perfringens, dont une proportion de cette population bactérienne produit l’entérotoxine qui peut engendrer des conséquences sur la santé humaine, il est difficile de prédire les impacts réels d’une telle stratégie sur les écosystèmes complexes que sont l’intestin des oiseaux et les élevages commerciaux de poulets de chair. Les principaux objectifs de la présente étude étaient donc de quantifier l'abondance des gènes de résistance aux antibiotiques, d'évaluer la présence de C. perfringens et de son entérotoxine et de caractériser la composition du microbiote cæcal dans les bâtiments de six fermes commerciales de poulets de chair, au Québec. À court terme (15 mois), les bâtiments de ces fermes ont été soumis à un régime conventionnel ou à un régime sans antibiotiques. Puis, à long terme (6 ans), les bâtiments ont utilisé un régime promouvant une utilisation judicieuse des antibiotiques ou un régime conventionnel. La mise en place d'un régime sans antibiotiques pendant une période de 15 mois n'a pas permis d’observer une réduction de l'abondance de plusieurs gènes de résistance aux antibiotiques, contrairement à l'utilisation judicieuse des antibiotiques pendant 6 ans. Le retrait des antibiotiques à court terme et l’utilisation judicieuse à long terme ont modifié la composition du microbiote cæcal, les familles de Ruminococcaceae et de Lachnospiraceae étant influencées négativement, en plus de diminuer les performances zootechniques et d’augmenter les populations de C. perfringens à court terme. Le régime conventionnel à long terme dans les élevages commerciaux de poulets de chair a été associé à une augmentation de plusieurs gènes de résistance aux antibiotiques dans de nombreuses fermes. Cette étude met en évidence les impacts potentiels des différents régimes d'élevage en production avicole et aidera à orienter les futures politiques afin de réduire l'utilisation des antibiotiques et ultimement contrer le phénomène de la résistance aux antibiotiques. / The ever-increasing problem of antibiotic resistance makes routine use of antibiotics in animal production no longer considered as a reasonable and viable practice. Preserving the effectiveness of antibiotics represents a major challenge for public and animal health. The Chicken Farmers of Canada have developed and are implementing an Antimicrobial Use Reduction Strategy which ultimate goal is eliminating the preventive use of medically-important antibiotics in broiler chicken and turkey productions. While it is known that the reduction of antibiotics in broiler chicken farms is associated with an increase in the incidence of necrotic enteritis caused by Clostridium perfringens, to which a proportion of this bacterial population produces the enterotoxin who can also generates consequences for human health, very little is known about the real overall impact of an antibiotic use reduction strategy in complex ecosystems such as the bird intestine or the commercial broiler chicken farm. The main objectives of the present study were to quantify the abundance of antibiotic resistance genes, to assess the presence of Clostridium perfringens and his enterotoxin and to characterize the composition of the cæcal microbiota in broiler chicken flocks from six commercial farms located in Québec and submitted to either a short-term conventional or drug-free program (15 months) or a long-term conventional or judicious antibiotic use program (six years). Implementing an antibiotic-free program over a 15-month period did not reduce the abundance of many antibiotic resistance-encoding genes, whereas a judicious use of antibiotics over six years did. The short-term antibiotic withdrawal and the long-term judicious use strategy altered the cæcal microbiota composition, with Ruminococcaceae and Lachnospiraceae families being negatively impacted, in agreement with the lower production performance and with the increased C. perfringens populations observed for farms phasing out the use of antibiotics in a short-term antibiotic withdrawal. Adopting a long-term conventional rearing program on commercial broiler chicken farms selected for specific antibiotic resistance-encoding genes in many barns. This study highlights the potential impacts of different rearing programs in poultry production and will help guide future policies in order to reduce the use of antibiotics and ultimately reduce the phenomenon of antibiotic resistance.

The question I address is: how might a theology of authority be conceived in the light of questions raised by what is termed 'post-modernity'? Is it possible to articulate a theology of authority coming to the church community 'from God' that avoids an oppressive and alienating heteronomy? The thesis explores the question of authority as of vital importance in the sociological dimension of religion, calling for legitimisation (in light of claims made for itself) and as obligatory in the theological sphere. For this reason the project involves two methodologies (theological and sociological/ethnographic). While this investigation is relevant to all sections of the Christian church, particular attention is paid to Baptist churches in the UK, since they hold a concept in their tradition that I suggest is valuable in answering the question of the thesis, namely that of covenant. Within the Christian tradition there is an inner 'problematic' relating the personal authority of Christ to the forms of institution (church) and text (scripture). I explore this with a brief survey of theological authority as found in the fourfold foundation of scripture, tradition, reason and experience. From this is developed a brief theological and Christological reflection on divine authority and covenant theology as found in Karl Barth and his response to the 'inner problematic'. Within contemporary culture I view authority through the lens of so-called 'postmodernism', identifying four challenges to the notion of 'external authority' (all of which exemplify a move from the external to internal, and objective to subjective approaches to authority). This is further explored by means of qualitative research with one-to-one interviews conducted in a Baptist church in York. This data is reflected upon by means of ethnography and 'judicious narratives', especially in dialogue with material from Guest ('congregational study'), Heelas and Woodhead ('subjectivised-self') and Healy ('theodramatic horizon' and 'practical-prophetic ecclesiology'), providing an intersection between the language of theology and sociology. The concept of church as covenant community is explored in Baptist and (more briefly) Anglican traditions, leading to a constructive proposal that both the inner-church 'problematic' and the 'postmodern' challenge to authority might begin to be resolved with the notion of covenant. It is within this context of relationship, human and divine, that the authoritative and revelatory Word of God, the story that is Christ, is found in community and praxis. Here is a 'triangulating' relationship between authority, story and covenant revealing divine authority in a non-coercive way and relevant to contemporary culture.