Runoff during the revegetation of roadsides can transport sediment and nutrients offsite, leading to surface water quality reductions. Two field experiments were conducted near Starkville, MS in 2011 and 2012 to evaluate the influence of N and P sources and rates, fertilization timing, and mulch type on vegetative establishment and nutrient and sediment runoff losses. Stainless steel runoff frames (0.75 x 2.0 m) were installed on 10% and 15% slopes for Experiment I and Experiment II, respectively. A bahiagrass (Paspalum notatum Flugge), tall fescue [Schedonorus arundinaceus (Schreb.) Dumort., nom. cons.], sericea lespedeza [Lespedeza cuneata (Dum. Cours.) G. Don], and common bermudagrass [Cynodon dactylon (L.) Pers.] mixture was seeded within each frame during Experiment I. Crimson clover (Trifolium incarnatum L.) was added for Experiment II. Experiment I treatments consisted of 73.5 or 147 kg N ha-1 as 13-13-13, poultry litter, ammonium nitrate, stabilized urea, polymer coated urea, or diammonium phosphate. Experiment II treatments consisted of wheat straw and six hydromulches; paper fiber, wood fiber, wood/paper fiber blend, flexible growth medium (FGM), extended term-FGM (ET-FGM), bonded fiber matrix (BFM). Runoff from natural and simulated rainfall was analyzed for PO43--P, total P (TP), NH4+-N, NO3- -N, total N (TN), and total solids (TS). Experiment I results suggest the greatest N and P runoff losses occurred during the first runoff event following fertilization. Splitting 147 kg N ha-1 into two equal applications increased nutrient losses compared to one application. Application of organic plus inorganic P increased PO43--P in runoff compared to inorganic P alone. Experiment II results indicate straw was the most effective mulch for increasing vegetative establishment and limiting solids and nutrients in runoff. However, lack of fertilizer prill dissolution may have influenced nutrient runoff losses during dry conditions. The FGM, ET-FGM, and BFM mulch treatments were more effective than the paper, wood, and paper/wood fiber treatments in reducing solids and nutrients in runoff. It was apparent during both experiments that timing, intensity, and duration of rainfall events following fertilization have an influence on runoff losses. However, further research is needed to quantify the influence of those rainfall parameters.

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This study proposed an experimental test of theoretical models related to emotion and space representation in the brain. Previous research has established that emotion is represented, processed, expressed, and regulated largely by the right hemisphere. Furthermore, there is evidence from experimental paradigms and clinical case reports to suggest that the same hemisphere plays a dominant role in the processing of external space. A conceptual difficulty of clinical and neural network overlap arises when right hemisphere disorders of emotion are compared with those of spatial representation. The current experiment tested some of these hypotheses about emotion regulation and spatial representation in the right hemisphere using nonclinical subjects under a cortical stress paradigm designed to mimic the conditions of cortical duress. An additional goal was an extension of a previous study that examined emotional influence on spatial orientation. Results did not support our initial hypotheses. Subsequent analyses did provide some evidentiary support for some theories related to emotion and brain function. Additionally, patterns of subject performance were observed that support traditionally held theories of differential hemispheric function with regard to emotion and spatial behavior. These findings are discussed within the context of theories of emotion, spatial function, and disorders secondary to right hemisphere damage. / Doctor of Philosophy / This is a study examining the role of emotion and stress on the allocation of attention in the individual’s external environment. Further examined was the role that brain systems involved in attention, emotion, and spatial representation and the correlation with brain damage and syndromes that result in disruption to these systems. Conceptual difficulties regarding overlapping brain areas that contribute to different functions serve as the foundation for understanding both how these systems work and the behavioral manifestations of their dysfunction. Finally, further elucidating the role of these neural systems in contributing to self-awareness, emotion regulation, and the representation of external space was the ultimate objective of this study.

Objectives: Phase 1) Establish echocardiographic reference intervals for measurements of the normal canine right heart. Phase 2) Describe the repeatability of normal right heart echocardiographic measurements. Phase 3) Describe the repeatability of right heart echocardiographic measurements which predict pulmonary artery pressure. Materials and Methods: Phase 1) 45 healthy adult dogs. Dogs underwent one echocardiographic examination by the same operator. Phase 2) 6 randomly selected dogs from the pool of Phase 1 dogs. Dogs underwent repeated echocardiograms by two operators. Phase 3) 4 client-owned dogs. Dogs underwent repeated echocardiographic examination by two operators. Results: Phase 1) The linear relationship between dimension and transformed body weight was highly variable. For linear dimensions, most of the scaling exponents were close to the theoretical value of 1/3. For area measurements, most of the scaling exponents were close to 2/3. Phase 2) Of the 168 within-day, between-day and between-operator coefficients of variation (CV) generated, 154 (91.7%) were below 15% and 135 (80.4%) were less than 10%. Phase 3) Of the 100 within-day, between-day and between-operator CVs generated, 72 (72%) were below 20% and 46 (46%) were below 10%. Conclusions: The right heart can be measured with relatively low repeatability. Measurement of the tricuspid regurgitation velocity should be the first priority when attempting to predict pulmonary artery pressure. If tricuspid regurgitation is not present, the use of transpulmonic acceleration time (AT) and the ratio of transpulmonic acceleration-to-ejection time (AT:ET) to indirectly assess pulmonary artery pressure is recommended. / Master of Science

In South Africa teachers are currently allowed to strike. This leads to numerous problems, as learners are left without an educator and their Constitutional right to basic education is infringed upon. This has an impact on university acceptance and impairs the socio-economic growth in the country, especially when taking into account the history of prejudice as regards education in South Africa. This dissertation considers whether or not education should be declared as an essential service in terms of the Labour Relations Act 66 of 1995, as sectors declared as such are not awarded the right to strike. In order to determine whether education should be designated as an essential service, the right to strike and the right to education as enshrined in the Bill of Rights in the Constitution of the Republic of South Africa, 1996, have to be balanced or weighed up against each other. By declaring education as an essential service it will ensure that the latter right is more adequately realised, in turn having a positive impact on the development of South Africa. In declaring education an essential service, educators will not be left without remedy as other remedies (which do not impair the rights of learners) do indeed exist and will be available to said educators in accordance with relevant legislation and provisions. / LLM (Labour Law), North-West University, Potchefstroom Campus, 2015

In South Africa teachers are currently allowed to strike. This leads to numerous problems, as learners are left without an educator and their Constitutional right to basic education is infringed upon. This has an impact on university acceptance and impairs the socio-economic growth in the country, especially when taking into account the history of prejudice as regards education in South Africa. This dissertation considers whether or not education should be declared as an essential service in terms of the Labour Relations Act 66 of 1995, as sectors declared as such are not awarded the right to strike. In order to determine whether education should be designated as an essential service, the right to strike and the right to education as enshrined in the Bill of Rights in the Constitution of the Republic of South Africa, 1996, have to be balanced or weighed up against each other. By declaring education as an essential service it will ensure that the latter right is more adequately realised, in turn having a positive impact on the development of South Africa. In declaring education an essential service, educators will not be left without remedy as other remedies (which do not impair the rights of learners) do indeed exist and will be available to said educators in accordance with relevant legislation and provisions. / LLM (Labour Law), North-West University, Potchefstroom Campus, 2015

The purpose of this essay is to describe the legal conditions of the two legal rights the safety representatives upholds, the right to suspend work and the right to request investigations. Furthermore, it should be investigated and explained what obstacles and problems the safety representatives may face when it comes to exercising these rights. The aim is also to give the essay a diversity perspective with the help of a study of language problems among migrated workers and if this can be a safety hazard in the work and how it then can be related to the safety representatives legal rights mentioned above. As occupational health and safety issues also are regulated by EU law, the purpose of this essay is also to give a brief account of how EU bodies affects the law concerning occupational health and safety issues. In order to answer the essays research questions and to achieve its purpose, I have worked with the legal method and also performed a qualitative research interview.   I have concluded that the right to request investigations and the right to suspend work are two powerful tools that a safety representative has at its disposal. However, there are several aspects that can affect how they can be used and for what. Furthermore, I also came to the conclusion that there are certain obstacles affecting safety representatives possibilities  to work with its right, in the form of knowledge, time for education and also fear from negative consequences applied from the employer. Finally, I would like to present my conclusions concerning language problems and that they could be considered a safety hazard in the work and that the right to request investigations and the right to suspend work could be relevant in the particular case.