Baigiamajame magistro darbe nagrinėjama požeminių komunikacijų vizualizacija trimačiame modelyje. Šiame magistriniame darbe išnagrinėta 3D duomenų svarba ir pranašumas prieš 2D vizualizavimą. Buvo atliktas požeminių komunikacijų projektavimo tyrimas trima��io vaizdavimo programine įranga, ištirtas šių technologijų naudojimas užsienyje bei naudojimo perspektyvos Lietuvoje. Darbą sudaro 10 dalių: įvadas, informacijos vizualizavimo aplinkos, 3D duomenų modelio esmė, 3D programinės įrangos galimybės inžinerijoje,3D vizualizavimo programinė įranga,3D modeliavimo koordinačių sistemos, trimačio geoinformacinių sistemų modelio sudarymas, požeminių komunikacijų trimačio geoinformacinių sistemų modelio sudarymo metodika, požeminių komunikacijų duomenų surinkimo reikalavimai, požeminių komunikacijų 3D skaitmeninio modelio kūrimas, požeminių komunikacijų trimačio modelio naudojimas Lietuvoje ir pasaulyje,išvados, literatūros sąrašas. / In the magistrate thesis are researching visualization of Underground communications at 3D data model. In the thesis analyse 3D model data significance and advantage against 2D model data. Also researching program equipment projection of Underground communications 3D data model, technology usage in foreign countries and opportunities for use in Lithuania. Structure: introduction, information visualization surrounding, 3D data model essence, 3D data program equipment opportunity in the engineering, 3D data model equipment, 3D data model coordinate systems, 3D data model formation, formation model of underground communication at 3D data model, data assemblage standards of underground communications, underground communication 3D data model creation, 3D data model usage in the world and Lithuania, conclusions, references.

Dans cette thèse, nous initions la démonstration, à échelle réduite, de la faisabilité du photodétachement presque total, par laser, d'un jet d'ions négatifs d'hydrogène en cavité optique Fabry-Perot pour les futurs injecteurs de neutres destinés au chauffage des plasmas des réacteurs de fusion nucléaire.Nous élaborons une nouvelle méthode de mesure d'une section efficace de photodétachement, dont la connaissance à la longueur d'onde d'excitation est requise pour le dimensionnement de la cavité Fabry-Perot, basée sur l'observation de la saturation en régime d'éclairement impulsionnel. Le calcul analytique de l'accroissement du signal de détachement produit lors de l'éclairement d'un jet d'ions par une impulsion laser supposée gaussienne, fait apparaître une contrainte mathématique sur le flux requis pour transiter vers le régime saturé. Cette contrainte est une caractéristique de la transition vers la saturation pour toutes les expériences réalisées en faisceau gaussien et pour tous les processus d'interaction lumière-matière linéaires. Avec cette méthode, nous déduisons une section efficace de photodétachement de H- à 1064 nm - longueur d'onde sélectionnée pour les futurs injecteurs de neutres - en léger désaccord avec les prédictions théoriques.Pour réduire les exigences technologiques sur la cavité et le laser, nous étudions les résonances de Landau qui apparaissent dans le spectre de photodétachement en champ magnétique. S'asservir sur l'une de ces résonances permettrait d'augmenter la probabilité de photodétachement à un flux donné.Par ailleurs, nous présentons nos mesures des affinités électroniques du phosphore, du sélénium et de l'étain, réalisées avec le microscope de photodétachement. L'expérience de microscopie de photodétachement du phosphore est la première où l'atome neutre est laissé dans un terme excité.

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The Q-weak experiment at Thomas Jefferson National Accelerator Facility (USA) will make a precision determination of the proton weak charge with approximately 4% combined statistical and systematic uncertainties via a measurement of the parity violating asymmetry in elastic electron-proton scattering at very low momentum transfer and forward angle. This will allow an extraction of the weak mixing angle at Q^2=0.026 (GeV/c)^2 to approximately 0.3%. The weak mixing angle is a fundamental parameter in the Standard Model of electroweak interactions. At the proposed accuracy, a measured deviation of this parameter from the predicted value would indicate new physics beyond what is currently described in the Standard Model. Without deviation from the predicted value, this measurement would place stringent limits on possible extensions to the Standard Model and constitute the most precise measurement of the proton's weak charge to date. The key experimental apparatus include a liquid hydrogen target, a toroidal magnetic spectrometer and a set of eight Cerenkov detectors. The Cerenkov detectors form the main detector system for the Q-weak experiment and are used to measure the parity violating asymmetry during the primary Q-weak production runs. The Cerenkov detectors form the main subject of this thesis. Following a brief introduction to the experiment, the design, development, construction, installation, and testing of this detector system will be discussed in detail. This is followed by a detailed discussion of detector diagnostic data analysis and the corresponding detector performance. The experiment has been successfully constructed and commissioned, and is currently taking data. The thesis will conclude with a discussion of the preliminary analysis of a small portion of the liquid hydrogen data.

The purpose of this thesis is to propose several corotational beam formulations for both 2D and 3D nonlinear dynamic analyse of flexible structures. The main novelty of these formulations is that the cubic interpolation functions are used to derive not only the internal force vector and the tangent stiffness matrix but also the inertial force vector and the dynamic matrix. By neglecting the quadratic terms of the local transversal displacements, closed-form expressions for the inertial terms are obtained for 2D problems. Based on an extensive comparative study of the parameterizations of the finite rotations and the time stepping method, and by adopting an approximation of the local rotations, two consistent and effective beam formulations for 3D dynamics are developed. In contrast with the first formulation, the second one takes into account the warping deformations and the shear center eccentricity. The accuracy of these formulations is demonstrated through several numerical examples.

La réponse d'un détecteur de neutrons varie avec l'énergie du neutron incident. La détermination expérimentale de cette variation se réalise au moyen de champs neutroniques monoénergétiques. Ceux-ci sont produits par l'interaction entre un faisceau d'ions accélérés et une cible fine constituée d'un dépôt réactif sur un support métallique. En utilisant différentes réactions telles que 7Li(p,n), 3H(p,n), 2H(d,n) et 3H(d,n), il est possible de produire des neutrons entre 120 keV et 20 MeV dans la direction du faisceau incident (0°).Pour atteindre des énergies inférieures, il est possible d'augmenter l'angle du point de mesure par rapport à la direction du faisceau d'ions. Cependant, cette méthode présente des problèmes d'homogénéité en énergie et en fluence des neutrons à la surface du détecteur, ainsi qu'une augmentation de la proportion de neutrons diffusés. Une alternative est l'utilisation d'autres réactions nucléaires, notamment la réaction 45Sc(p,n) qui permet de descendre jusqu'à des énergies de 8 keV à 0°.Une étude complète de cette réaction et de sa section efficace a été menée au sein d'une coopération scientifique entre le laboratoire de métrologie et de dosimétrie des neutrons (LMDN) de l'IRSN, deux instituts de métrologie européens, le NPL (National Physical Laboratory, RU) et le PTB (Physikalisch-Technische Bundesanstalt, All), et l'IRMM (Institute for Reference Materials and Measurements, CEE). Parallèlement, d'autres réactions envisageables ont été étudiées : 65Cu(p,n), 51V(p,n), 57Fe(p,n), 49Ti(p,n), 53Cr(p,n) et 37Cl(p,n). Elles ont été comparées en termes d'émission neutronique et d'énergie minimale des neutrons produits.

This research study was designed to determine the attitudes, and perceptions of Indiana high school principals concerning implementation of Section 504 of the Rehabilitation Act of 1973. The sample consisted of Indiana high school principals who held membership in the Indiana Association of School Principals. There were 222 high school principals who were requested to complete an on-line survey; 105 principals responded, which generated a response rate of 47 %.The Section 504 on-line survey was modified from an instrument in California in which the researcher studied the attitudes and perceptions of elementary school administrators (Williams, 2003).The data were analyzed, depending upon the variable, with a standard analysis of variance (ANOVA) or t-test design. Demographical data and survey responses were subjected to statistical analyses based upon the research hypothesis being examined. Demographical data collected from high school principals were degree earned, type of license, years of experience, gender, size of the school, whether the principal was responsible for implementing Section 504 plans, and if the principal categorized his school as rural, suburban, or urban.Results showed significance for high school size and whether the high school principal was responsible for implementing Section 504 plans. As high schools increased in the number of students, there was a need for principals to have additional training in implementing Section 504 plans. Another significant finding was that principals believe students with disabilities benefit educationally from having Section 504 plans at minimalcosts to their school corporations. However, principals also have a slightly negative attitude towards implementing Section 504 plans. Possible reasons for these results were discussed and a need for further research was offered. / Department of Educational Leadership

Remarkable progress with respect to the necessity of child participation has been observed in the Children's Act, act 38 of 2005. Article 10 of the Children's Act, act 38 of 2005, specifically provides for children‟s right to participate in any situation applicable to a child. Despite afore-mentioned progress in the legal field, the reality is that there are remarkable differences between children's rights to participate in society and society's experience of the role children play and the abilities they possess to do so. In this article the focus is on the responsibility of the social worker during the implementation of children's participation, according to the Children's act, act 38 of 2005. The successful implementation of children's participation by social workers ensures that the child is given a voice while important issues are being heard and discussed. This can actively contribute to the improvement of services offered to children and families with regard to effective intervention programmes and can ensure a positive outcome in terms of services provided. / Thesis (MSW (Forensic Practice))--North-West University, Potchefstroom Campus, 2013.

Parents, together with the learners, are the customers and therefore major stakeholders of schools. The management of performance is vital for these stakeholders to ensure the most effective application of their resources. Therefore, this research on how SGBs and SMTs in Section 21 Schools apply performance management, at school level, to ensure effective management of the school and its resources was undertaken. Other key questions were: Which performance management tools do these schools use and what are the perceived benefits, gained by the application of performance management at school level? The research was supported by a detailed literature review covering education in South Africa, performance management and the available frameworks to evaluate the application of performance management and to gain a base for the analysis of the empirical data. Qualitative research was chosen as the preferred method of research since this was an exploratory study and qualitative research allowed key factors to emerge. Purposive sampling was used to select the participants in order to obtain insight into the application of performance management and participants‟ perspective of the benefits gained by applying performance management. Interviews were conducted with the principals and a parent representative of each of the SGBs at these schools. An interview guide was used to guide the interviews. The findings showed that all the schools under investigation made use of the Integrated Quality Management System. Participants however agreed that this system was not adequate and they needed to add their own performance management tools in order to maintain their current performance and position as prestigious schools. Although all participating schools were using some form of benchmarking, setting goals and targets, measuring learners‟ performance on all activities and measuring learners‟ behaviour, the findings also revealed that most of the schools did not implement a formal system covering all the dimensions of a school. It was evident from the findings that most of the participating schools benefitted from the application of performance management in the form of effective management and personnel development. Findings from the evaluation of the performance management systems revealed that the implementation of performance management systems is seldom carried through to the final stages and information is not always used to draft strategy in order to improve performance. It was concluded that SGBs and SMTs of the participating schools complied with some requirements indicated in literature to apply performance management systems. However most of the methods or systems are not fully implemented and there are many shortcomings. The findings suggested that the Integrated Quality Management System is reviewed by the Department of Basic Education. Furthermore, it also suggested that schools need to create formal procedures and policies in order to ensure the complete and effective application of performance management and establish a clear link between performance measures and the overall strategy of the school. The study also suggested that the schools‟ management have to design a performance management system, incorporating all the dimensions of their school and refrain from focusing only on incentives. / MCom (Management Accountancy), North-West University, Potchefstroom Campus, 2013