Dissertations / Theses on the topic 'Balance domains'

Leadership has been studied from many angles. But in my study, I study leadership with metaphors, hoping to provide some new insights. With metaphors, I want to seek an answer what can leaders do to integrate themselves to lead better. In this time, leadership is no longer constrained within one domain. With rapid changes and merging among companies and industries, people expect leadership in a broader range of contexts and domains. I also want to find what leaders can do to manage their influence well, to get it across domains. I look into various fields including psychology, culture, leadership and others to gain knowledge. With the help of metaphor, I break the questions into answerable parts and start my research. As for methodology, I adopt systems approach. I conduct eight interviews with leaders from diversified backgrounds regarding age, gender, industry, position and family status. But one thing in common is that they are all highly engaged in multi-cultural or multi-domain interaction. By studying their experience, learning their past and their approach, I come up with eight patterns of influence from the interviews, showing their uniqueness in style and approach to integrate themselves and to convey influence beyond domains. In theoretical study, I further compare the patterns to locate the common parts and reveal the different parts. Then I introduce a concise frame and analyze further. Finally, by combining books, articles and analysis, I provide the advice on what leader can do to expand their influence. Finally, I suggest a few points for leaders to integrate themselves to be better leaders and seek their styles. Then, using their styles or patterns, develop and deliver their influence beyond domains.

The underlying thread of the research work presented in this thesis is the development of a robust, accurate and computationally efficient general-purpose Reynolds-Averaged Navier-Stokes code for the analysis of complex turbulent flow unsteady aerodynamics, ranging from low-speed applications such as hydrokinetic and wind turbine flows to high-speed applications such as vibrating transonic wings. The main novel algorithmic contribution of this work is the successful development of a fully-coupled multigrid solution method of the Reynolds-Averaged Navier-Stokes equations and the two-equation shear stress transport turbulence model of Menter. The new approach, which also includes the implementation of a high-order restriction operator and an effective limiter of the prolonged corrections, is implemented and successfully demonstrated in the existing steady, time-domain and harmonic balance solvers of a compressible Navier-Stokes research code. The harmonic balance solution of the Navier-Stokes equations is a fairly new technology which can substantially reduce the run-time required to compute nonlinear periodic flow fields with respect to the conventional time-domain approach. The thesis also features the investigation of one modelling and one numerical aspect often overlooked or not comprehensively analysed in turbulent computational fluid dynamics simulations of the type discussed in the thesis. The modelling aspect is the sensitivity of the turbulent flow solution to the, to a certain extent, arbitrary value of the scaling factor appearing in the solid wall boundary condition of the second turbulent variable of the Shear Stress Transport turbulence model. The results reported herein highlight that the solution variability associated with the typical choices of such a scaling factor can be similar or higher than the solution variability caused by the choices of different turbulence models. The numerical aspect is the sensitivity of the turbulent flow solution to the order of the discretisation of the turbulence model equations. The results reported herein highlight that the existence of significant solution differences between first and second order space-discretisation of the turbulence equations vary with the flow regime (e.g. fully subsonic or transonic), operating conditions that may or may not result in flow separation (e.g. angle of attack), and also the grid refinement. The newly developed turbulent flow capabilities are validated by considering a wide range of test cases with flow regime varying from low-speed subsonic to transonic. The solutions of the research code are compared with experimental data, theoretical solutions and also numerical solutions obtained with a state-of-the-art time-domain commercial code. The main computational results of this research regard a low-speed renewable energy application and an aeronautical engineering application. The former application is a thorough comparative analysis of a hydrokinetic turbine working in a low-speed laminar and a high-Reynolds number turbulent regime. The time-domain results obtained with the newly developed turbulent code are used to analyse and discusses in great detail the unsteady aerodynamic phenomena occurring in both regimes. The main motivation for analysing this problem is both to highlight the predictive capabilities and the numerical robustness of the developed turbulent time-domain flow solver for complex realistic problems, and to shed more light on the complex physics of this emerging renewable energy device. The latter application is the time-domain and harmonic balance turbulent flow analysis of a transonic wing section animated by pitching motion. The main motivation of these analyses is to assess the computational benefits achievable by using the harmonic balance solution of the Reynolds-Averaged Navier-Stokes and Shear Stress Transport equations rather than the conventional time-domain solution, and also to further demonstrate the predictive capabilities of the developed Computational Fluid Dynamics system. To this aim, the numerical solutions of this research code are compared to both available experimental data, and the time-domain results computed by a state-of-the-art commercial package regularly used by the industry and the Academia worldwide.

Abstract The modern wireless communication techniques are aiming on increasing bandwidth and the number of carriers for higher data rate. This sets challenging linearity requirements for RF power amplifiers (PAs). Unfortunately, high linearity can only be obtained at the cost of efficiency. In order to improve the performance of the PA, in-depth understanding of nonlinear behaviour is mandatory. This calls for techniques that can give componentwise information of the causes of the distortion. The aim of this thesis is to develop a technique that can provide such information. This thesis proposes a detailed distortion analysis technique that is based on frequency domain fitting of polynomial models. Simulated large-signal spectra are used for fitting as these contain the necessary information about the large-signal bias point and amplitude range. Moreover, in the frequency domain the delays are easy to compensate, and detailed analysis to any fitted tone can be performed. The fitting procedure as such is simple but becomes difficult in multi-dimensional nonlinearities if the controlling voltages correlate strongly. In this thesis the solvability and reliability of the fitting procedure is increased by numerical operations, model-degree reduction and by using different excitations. A simplified Volterra method is used to calculate the distortion contributions by using the fitted model. The overall distortion is analysed by calculating the voltage response of the contributions of each nonlinearity to the terminal nodes of the device by the use of linear transfer functions of the circuit. The componentwise analysis is performed by phasor presentation enabling the cancelling mechanisms to be seen. The proposed technique is implemented on top of harmonic balance simulation in an APLAC circuit simulator in which extensive distortion simulations are performed. The technique relies on the existing device model and thus the fitted model can be only as accurate as the particular simulation model. However, two different RF PAs are analysed that show a good agreement between measurements and simulations. The proposed technique is verified with several test cases including amplitude dependent amplitude and phase distortion, intermodulation distortion sweet spots, bandwidth dependent memory effects and impedance optimization. The main finding of the detailed analysis is that the distortion is a result of several cancelling mechanisms. In general, cubic nonlinearity of transconductance is dominating the in-band distortion but is cancelled by the 2nd-degree nonlinearity that is mixed to the fundamental band from envelope and 2nd harmonic bands that is usually the main cause of memory effects.

This research investigates a novel arrangement to pneumatic suspensions that are commonly used in heavy trucks, toward providing a dynamically balanced system that resists body roll and provides added roll stability to the vehicle. The new suspension, referred to as "balanced suspension," is implemented by retrofitting a conventional pneumatic suspension with two leveling valves and a symmetric plumbing arrangement to provide a balanced airflow and air pressure in the airsprings. This new design contributes to a balanced force distribution among the axles, which enables the suspension to maintain the body in a leveled position both statically and dynamically. This is in contrast to conventional heavy truck pneumatic suspensions that are mainly adjusted quasi-statically to level the body in response to load variations. The main objectives of the research are to discover and analyze the effects of various pneumatic components on the suspension dynamic response and numerically study the benefits of the pneumatically balanced suspension system. A pneumatic suspension model is established to capture the details of airsprings, leveling valves, check valves, pipes, and air tank based on the laws of fluid mechanics and thermodynamics. Experiments are designed and conducted to help determine and verify the modeling parameters and components. Co-simulation technique is applied to establish a multi-domain model that couples highly non-linear fluid dynamics of the pneumatic suspension with complex multi-body dynamics of an articulated vehicle. The model is used to extensively study effects of pneumatic balanced control of the suspensions on the tractor and trailer combination dynamics. The simulations indicate that the dual leveling valve arrangement of the balanced suspension provides better adjustments to the body roll by charging the airsprings on the jounce side, while purging air from the rebound side. Such an adjustment allows maintaining a larger difference in suspension force from side to side, which resists the vehicle sway and levels the truck body during cornering. Additionally, the balanced suspension better equalizes the front and rear drive axle air pressures, for a better dynamic load sharing and pitch control. It is evident from the simulation results that the balanced suspension increases roll stiffness without affecting vertical stiffness, and thereby it can serve as an anti-roll bar that results in a more stable body roll during steering maneuvers. Moreover, the Failure Mode and Effects Analysis (FMEA) study suggests that when one side of the balanced suspension fails, the other side acts to compensate for the failure. On the other hand, if the trailer is also equipped with dual leveling valves, such an arrangement will bring an additional stabilizing effect to the vehicle in case of the tractor suspension failure. The overall research results presented show that significant improvements on vehicle roll dynamics and suspension dynamic responsiveness can be achieved from the balanced suspension system.
PHD

The author introduces the regulatory and political landscape of the mining concession and the institutional decay it has suffered. He also shows the systems of acreage and the system which our country has received it well: the System of Public Domain. Finally, the author analyzes the mining concession and harvesting rights, raised according to the Constitution and the General Mining Law, explaining the policy changes needed to strengthen it as a fundamental qualifying title for the development of mining activities in the country.
El autor presenta un panorama normativo y político de la concesión minera y el desgaste institucional que ha sufrido. Asimismo, expone los sistemas de dominio minero y el que nuestro país ha acogido con acierto: el Sistema Dominalista. Por último, analiza la concesión minera y el derecho de aprovechamiento, planteado de acuerdo a la Constitución y Ley General de Minería, explicando los cambios normativos necesarios a fin de fortalecerlo como título habilitante fundamental para el desarrollo de las actividades mineras del país.

The research work reported in this thesis stems from the development of an accurate and computationally efficient Reynolds-Averaged Navier-Stokes (RANS) research code, with a particular emphasis on the steady and unsteady aerodynamics analysis of complex low speed turbulent flows. Such turbulent flow problems include horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT) operating at design and off-design conditions. On the algorithmic side, the main contribution of this research is the successful development of a rigorous novel approach to low-speed preconditioning (LSP) for the multigrid fully coupled integration of the steady, time-domain and harmonic balance RANS equations coupled to the two-equation shear stress transport (SST) turbulence model. The design of the LSP implementation is such that each part of the code affected by LSP can be validated individually against the baseline solver by suitably specifying one numerical input parameter of the LSP-enhanced code. The thesis has investigated several important issues on modelling and numerical aspects which are seldom thoroughly analysed in the computational fluid dynamics problems of the type presented herein. The first and most important modelling issue is the necessity of applying the low speed preconditioning to both RANS and SST equations and maintaining the turbulent kinetic energy in the definition of the total energy, which, to the best knowledge of author, has never been seen in any published literature so far. Based on the results obtained in the analysis of the vertical axis wind turbine application, we have demonstrated that by preconditioning the SST turbulence equations, one can significantly improve the convergence rate; and keeping the turbulence kinetic energy in the total energy has a great positive effect on the solution accuracy. The other modelling issue to be analysed is the sensitivity of the flow solution to the farfield boundary conditions, particularly for low speed problems. The analyses reported in the thesis highlight that with a small size of the computational domain, the preconditioned farfield boundary conditions are crucial to improve the solution accuracy. As for the numerical aspects, we analyse the impact of using the relative velocity to build the preconditioning parameter on the flow solutions of an unsteady moving-grid problem. The presented results demonstrate that taking into account the grid motion in building the preconditioning parameter can achieve a noticeable enhancement of the solution accuracy. On the other hand, the nonlinear frequency-domain harmonic balance approach is a fairly new technology to solve the unsteady RANS equations, which yields significant reduction of the run-time required to achieve periodic flows with respect to the conventional time-domain approach. And the implementation of the LSP approach into the turbulent harmonic balance RANS and SST formulations is another main novelty presented herein, which is also the first published research work on this aspect. The newly developed low speed turbulent flow predictive capabilities are comprehensively validated in a wide range of tests varying from subsonic flow with slight compressibility to user-defined extremely low speed incompressible flows. The solutions of our research code with LSP technology are compared with experiment data, theoretical solutions and numerical solutions of the state-of-the-art CFD research code and commercial package. The main computational results of this research consist of the analyses of HAWT and VAWT applications. The first one is a comparative analysis of 30% and 93.5% blade sections of a VESTAS multi-megawatt HAWT working in various regimes. The steady, time-domain and frequency-domain results obtained with the LSP solver are used to analyse in great detail the steady and unsteady aerodynamic characteristics in those regimes. The main motivation is to highlight the predictive capabilities and the numerical robustness of the LSP-enhanced turbulent steady, time-domain and frequency domain flow solvers for realistic complex and even more challenging problems, to quantify the effects of flow compressibility on the steady and yawed wind-induced unsteady aerodynamics in the tip region of a 82-m HAWT blade in rated operating condition, and to assess the computational benefits achieved by using the harmonic balance method rather than the conventional time-domain method. The second application is the comparative aerodynamic analyses of the NREL 5MW HAWT working in the inviscid steady flow condition. The main motivation of this analysis is to further demonstrate the predictive capabilities of the LSP solver to simulate the threedimensional wind turbine flows. The last application is the time-domain turbulent flow analysis of the VAWT to the aim of demonstrating the accuracy enhancement of the LSP solver for this particular problem, the necessity of applying the full preconditioning strategy, the important effect of the turbulent kinetic energy on the solution accuracy and the proper implementation of the preconditioning parameter required for an accurate numerical solution to an unsteady moving grid low-speed problem.

This thesis expands upon the notion that Thucydides’ plague narrative in his History of the Peloponnesian War punctuates his argument for the unique greatness of the Peloponnesian War. Through the plague, Thucydides displays the collapse of Greek society’s standards and practices. He does this by describing a plague which does not conform to 5th century BCE Greek medical ideas. Balance, human art, and divine intervention all fail in their attempts to restore the health of the individual and society. Thucydides portrays the plague as a narrative aggressor whose intent is to topple Athens and its ideals. Lucretius’ plague narrative, because it narrates the same historical moment but from a different perspective, is then discussed in order to demonstrate how other authors have used Thucydides’ technique.

The measurement of water in soil on a potential, gravimetric or volumetric basis is considered, with studies concentrating on the measurement of water by dielectric and neutron moderation methods. The ability of the time-domain reflectometry technique to measure water content simultaneously at different spatial locations is an important advantage of the technique. The reported apparent dielectric by the TRASE� time-domain reflectometer and Pyelab time-domain reflectometry systems is sensitive to change in extension cable length. In some soil, e.g. a commercial sand, the response to increasing extension length of extension cable is linear. For other soil a linear response occurs for certain lengths of cable at different moisture contents. A single model accounting for clay content, extension cable length, time-domain reflectometry system, probe type and inherent moisture conditions explained 62.2 % of variation from the control (0 m extension) cable. The extension cable causes a decrease in the returning electromagnetic-wave energy; leading to a decline in the slope used in automatic end-point determination. Calibration for each probe installation when the soil is saturated, and at small water contents is recommended. The ability of time-domain reflectometry, frequency-domain and neutron moderation techniques in measuring soil water content in a Brown Chromosol is examined. An in situ calibration, across a limited range of water contents, for the neutron moderation method is more sensitive to changing soil water content than the factory supplied 'universal' calibration. Comparison of the EnviroSCAN� frequency-domain system and the NMM count ratio indicates the frequency-domain technique is more sensitive to change in soil water conditions. The EnviroSCAN� system is well suited to continuous profile-based measurement of soil water content. Results with the time-domain reflectometry technique were disappointing, indicating the limited applicability of time-domain reflectometry in profile based soil water content measurement in heavy-textured soil, or soil with a large electrical conductivity. The method of auguring to a known depth and placement of the time-domain reflectometry probe into undisturbed soil is not recommended. A time-domain reflectometry system is adapted for in situ measurement of water in an iron ore stockpile. The laboratory calibration for water content of the processed iron ore compares favourably to a field calibration. In the field study, the 28 m extension cable used to connect the probes to the time-domain reflectometry affected the end-point determination of the time-domain reflectometry system. To account for this, 0.197 should be subtracted from the reported apparent dielectric before calculation of volumetric moisture content.

In contemporary society, work and home represent the two most significant domains in the life of a working individual. In order to help an individual live optimally, the work and personal life domains must no longer be regarded as separate domains, but as highly interrelated. The work and personal life domains must influence each other in a positive way to assist the individual in his daily responsibilities at work and in his personal life. A high proportion of employed workers, however, have serious difficulties in combining obligations in their work and personal lives. Educators are one of the occupations that may find it difficult to integrate their work and personal life. The objectives of this research were to determine how Afrikaans-speaking educators experienced Work-Personal Life Interaction (WPLI), to determine the domains in Afrikaans-speaking educators' lives that could interact with one another, to determine the main antecedents and consequences of WPLI for Afrikaans-speaking educators and to investigate which strategies Afrikaans-speaking educators used to deal with WPLI issues. A non-probability purposive voluntary sample (N = I I) of Afrikaans-speaking secondary school educators was used from the North West Province (in the Potchefstroom and Promosa areas). A qualitative design from a phenomenological approach was used to determine educators' experience of WPLI. Content analysis was used to analyse, quantify and interpret the research data. The results indicated that educators experienced certain aspects in their work environment and personal lives as demanding. Certain dimensions were identified in both their work and personal lives. As a result of a demanding work environment, they experienced time and strain-based conflict between their work and personal lives. However, it was found that educators possessed various factors that facilitated their WPLI and strategies they used to deal with WPLI issues. Recommendations were made for the organisation and for future research.
Thesis (M.Comm. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2007.

Made available in DSpace on 2014-08-20T14:33:08Z (GMT). No. of bitstreams: 1 Dissertacao_Viviane_Santos_Silva_Terra.pdf: 2073573 bytes, checksum: 19ddda03c961d08b0c0179b761552932 (MD5) Previous issue date: 2010-02-12
The South region of Brazil (Pelotas, state of Rio Grande do Sul) is responsible for the production of temperate fruit trees. Among them, the peach crop has been a good option for crops diversification. The knowledge of the amount of available soil water to supply water needs during the peach different stages of development is of interest to the agronomic point of view. In this sense, we highlight the importance of the use of irrigation in peach orchards in order to provide an adequate crop water supply. It is therefore important to know the response of peach to water deficit so that we can assess the influence of the practice of irrigation in crop production. Among the methodologies, the soil water balance, which consists of applying the equation of conservation of mass, has been used. Based on this, the main objective of this work was to evaluate and quantify the different components of water balance in a Red Yellow Podzolic soil, planted with peach trees, cultivar Maciel, under irrigation and without irrigation and to verify the adequacy of Domain Reflectometry Frequency (FDR) equipment for monitoring the water content over time. The evaluation and quantification of different components of water balance of soil water were measured in an experimental area which belongs to Embrapa Clima Temperado, Pelotas-RS, Brazil, planted with peach cultivar Maciel, nearby plants irrigated and not irrigated. For this, the water balance calculation was carried out weekly and divided into 32 periods, of which 4 periods (12, 20, 24 and 26) were discarded because they had precipitation above 30 mm week-1. The experimental area containing irrigated and no irrigated plants was divided into five strips. The irrigated plants belonged to the strip 1 (tubes 3 and 6), strip 2 (tube 2) and strip 3 (tube 1), each one with an area of 0.5 m². The no-irrigated area belonged to the strip 4 (tube 8) and 5 (tube 7), with an area of 1 meters each one. Strips 1, 2 and 4 were under canopy and the other outside of the canopy. Rainfall was measured by rain gauges; irrigation water supply was made based on the average daily evapotranspiration of the region; the variation of water storage in the soil was measured by readings of soil water content up to 0.50 m depth, using an equipment based on reflectometry in the frequency domain (FDR) which was calibrated from readings of tensiometers; the runoff and internal drainage or capillary rise were neglected; and the actual evapotranspiration (ETr) was taken as the unknown variable. From the results we can conclude that it is possible to use an indirect method, using tensiometers and soil water retention curves to obtain calibration curves of the reflectometry equipment in the frequency domain (FDR); the adopted irrigation management, based on the average evapotranspiration of the region, may not be sufficient to supply the water requirements of peach crop; peach trees with water supply through irrigation have higher values of actual evapotranspiration; and soil water storage ranged in all irrigated and no irrigated strips between 60 and 140 mm week-1, unaffected by the adopted treatments in the study.
A região de Pelotas é responsável pela grande produção de frutíferas de Clima Temperado, em especial a cultura do pessegueiro que tem sido uma boa opção para a diversificação de culturas. O conhecimento da quantidade de água disponível no solo para atender as necessidades hídricas do pessegueiro durante os seus diferentes estádios de desenvolvimento é de interesse do ponto de vista agronômico. Neste sentido, destaca-se o uso da irrigação na cultura do pessegueiro, visando fornecer a cultura um adequado suprimento de água. Desta forma, é importante conhecer a resposta do pessegueiro ao déficit hídrico para que se possa avaliar a influência da prática da irrigação na produção da cultura. Dentre as metodologias que tem sido utilizada, destaca-se a do balanço hídrico no solo, que consiste na aplicação da equação de conservação de massa. Baseado no acima exposto, este trabalho teve como o objetivo principal avaliar e quantificar os diferentes componentes do balanço hídrico em um solo Argissolo Vermelho Amarelo, cultivado com plantas de pessegueiro, cultivar Maciel, em condições de irrigação e sem irrigação, bem como verificar a adequação de um equipamento de Reflectometria no Domínio da Frequência (FDR) para monitorar o seu conteúdo de água ao longo do tempo. A avaliação e quantificação dos diferentes componentes do balanço hídrico de água no solo foram realizadas em uma área experimental pertencente a Embrapa Clima Temperado, Pelotas-RS, cultivada com pessegueiro, cultivar Maciel, próximo às plantas irrigadas e não irrigadas. Para tal, o cálculo do balanço hídrico foi realizado semanalmente e dividido em 32 períodos, sendo a área experimental contendo as plantas irrigadas e não irrigadas dividida em cinco faixas. As plantas irrigadas pertenciam a faixa 1 (tubos 3 e 6), faixa 2 (tubo 2) e faixa 3 (tubo 1), cada uma com área de 0,5 m². As não irrigadas pertenciam a faixa 4 (tubo 8) e faixa 5 (tubo 7), com uma área de 1,0 m² cada. As faixas 1, 2 e 4 encontravamse na subcopa da planta e as demais fora da copa. A precipitação foi medida por meio de pluviômetros; a irrigação foi feita diariamente baseada na média evapotranspirativa da região; a variação da armazenagem de água no solo foi medida por meio de leituras de umidade do solo até 0,50 m de profundidade, utilizando-se um equipamento baseado na reflectometria no domínio da frequência (FDR), o qual foi calibrado a partir de leituras de tensiometria; o escoamento superficial e a drenagem interna ou ascensão capilar foram desprezados; a evapotranspiração foi tomada como variável incógnita. A partir dos resultados podese concluir que é possível a utilização de um método indireto, usando tensiômetros e curvas de retenção para a obtenção de curvas de calibração do equipamento de reflectometria no domínio da frequência (FDR); o manejo de irrigação adotado, baseado na média de evapotranspiração da região, pode não ser suficiente para suprir a demanda hídrica da cultura do pessegueiro; plantas de pessegueiro com suprimento hídrico por meio da irrigação apresentam valores maiores de evapotranspiração real e a armazenagem variou em todas as faixas irrigadas e não irrigadas entre 60 a 140 mm semana-1, não sendo afetada pelos manejos adotados no estudo.

Une étude expérimentale des transferts d'humidité dans l'aubier de pin sylvestre dans le domaine hygroscopique a été effectuée. L'étude de l'influence de plusieurs paramètres sur les transferts (direction de diffusion, teneur en eau du bois, température, dimensions de l'échantillon) a permis d'obtenir les données nécessaires à l'élaboration d'un modèle mathématique. Ce modèle permet de simuler les cinétiques de transfert d'humidité dans le bois (aubier de pin mais aussi d'autres espèces), à humidité relative constante ou variant au cours du temps. Le modèle étant tridimensionnel, on peut connaitre les teneurs en eau à chaque instant et en chaque point de l'échantillon. Ces renseignements sont nécessaires pour prévoir une éventuelle biodégradation par les champignons

L’Anatolie fait partie d’un vaste domaine orogénique qui s’étend des Alpes à l’Himalaya. Les sutures ophiolitiques rencontrées marquent les cicatrices de plusieurs domaines océaniques (branches de la Néotéthys Nord), interdigités entre plusieurs blocs crustaux au cours du Mésozoïque. La fermeture de ces domaines au Crétacé supérieur est accompagnée de la mise en place de bassins tertiaires syn-orogéniques dont fait partie le Bassin de Sivas, limité au nord par le bloc du Kırşehir et au Sud par les Taurides. Une étude structurale de terrain, complétée d’analyses géochimiques, biostratigraphiques et thermochronologiques ainsi que l’étude de 700 km de lignes sismiques 2D inédites, a été menée pour tenter de comprendre (i) le contexte géodynamique régional et (ii) l’architecture tectono-sédimentaire de ce bassin.L’étude des ophiolites présentes le long de la bordure sud du Bassin de Sivas met en évidence des péridotites intensément serpentinisées. La partie supérieure de l’ophiolite présente des brèches et ophicalcites caractéristiques de l’exhumation mantellique, alors que l’analyse géochimique des corps magmatiques révèle un environnement de supra-subduction, daté à circa 90 Ma (U-Pb sur zircon). Ces analyses démontrent la présence d’un domaine océanique embryonnaire entre le Kırşehir et les Taurides, dont la fermeture s’initie le long d’ancienne failles de détachement. L’obduction de la nappe de péridotite et de son mélange frontal sur la marge Nord des Taurides entre le Turonien et le Maastrichtien, permet de former le « socle ophiolitique » commun aux bassins est-anatoliens. L’analyse détaillée de la partie centrale du bassin, en carte et à l’aide de lignes sismiques 2D inédites et de thermochronologie basse température [AFTA et (U-Th)/sur apatite], a permis de proposer un modèle d’évolution cinématique sur la base de coupes équilibrées. La propagation de la déformation vers le Nord, initiée dès l’Eocène inférieur, permet l’isolation progressive du bassin et une forte accumulation d’évaporites à l’Eocène supérieur. Les dépôts de l’Oligo-miocène sont ensuite contrôlés par l’halocinèse, permettant la mise en place de deux générations de mini-bassins salifère, séparés d’une canopée. Les géométries dans le domaine halocinétique, et les variations latérales dans le bassin, montrent le contrôle exercé par (i) le bassin pré-évaporite affleurant le long de la moitié sud du bassin et (ii) l’épaisseur du niveau de sel initial.L’intégration de ces observations à l’échelle régionale met en évidence un contrôle du raccourcissement crustal, dans les Taurides et les bassins tertiaires, lié à la fermeture de la Néotéthys Sud, en générant l’émergence de structures de socles. La collision enregistrée à l’Oligocène supérieur - Miocène lors de l’indentation de la plaque Arabe le long des Taurides est contemporaine de la déformation du Bassin de Sivas et des bassins adjacents
Anatolia is part of a vast orogenic domain that extends from the Alps to the Himalayas. Numerous ophiolitic sutures defined the remnants of several oceanic domains (Northern and southern Neotethys), between continental fragments formed during Mesozoic time. Oceanic closure during Late Cretaceous is recorded by the establishment of syn-orogenic tertiary basins, including the Sivas Basin bounded to the north by the Kırşehir block and to the south by the Taurides. An extended study based on field and completed by geochemistry, biostratigraphy and thermochronology analyzes and more than 700 km unpublished seismic data, was conducted to resolve (i) the regional geodynamic context and (ii) the tectono-sedimentary architecture of this basin.The ophiolites located along the southern edge of the Sivas Basin are made of serpentinized peridotites. The upper part of the ophiolite present breccias and ophicalcites commonly described as associated to mantle exhumation environment, while the geochemical analysis of the magmatic bodies reveals a supra-subduction environment dated at circa 90 Ma (U-Pb on zircon). These observations are in agreement with an embryonic ocean domain located between the Kırşehir and the Taurides, the closure which was initiated along fossil detachment faults. The obduction of the peridotite nappe and its frontal mélange on the northern margin of the Taurides between the Turonian and the Maastrichtian allows forming the “ophiolitic basement” of the east-anatolian basins.A detailed map and cross-section analysis, supported by 2D seismic lines and low-temperature thermochronology [AFTA and (U-Th) / on apatite], resulted in a kinematic evolution model and the realization of balanced cross-sections. The propagation of the deformation towards the north, initiated in the Lower Eocene, results in the progressive isolation of the basin and a strong accumulation of evaporites during the Upper Eocene. The Oligo-Miocene depocenters were controlled by halokinesis, forming two generations of mini-basins, separated by a salt canopy. The geometries in the halokinetic domain and the lateral variations in the basin show the control exerted by (i) the pre-evaporite basin outcropping along the southern half of the basin and (ii) the thickness of the initial salt level.Integration at the regional scale within the Taurides highlights the propagation of crustal shortening related to the Southern Neotethys closure, which formed linear tectonic basement exhumation. The collision recorded in the Upper Oligocene - Miocene during the indentation of the Arabic plate along the Taurides is contemporaneous to the deformation the Sivas Basin

Forced response analysis of bladed disk assemblies plays a vital role in rotor blade design and has been drawing a great deal of attention both from research community and engine industry for more than half a century. However because of the phenomenon called &lsquo
mistuning&rsquo
, which destroys the cyclic symmetry of a rotor, there have been several difficulties related to forced response analysis ever since, two of which are addressed in this thesis: efficient non-linear forced response analysis of mistuned bladed disks and mistuning identification. On the nonlinear analysis side, a new solution approach is proposed studying the combined effect of non-linearity and mistuning, which is relatively recent in this research area and generally conducted with methods whose convergence and accuracy depend highly on the number of degrees of freedom where non-linear elements are attached. The proposed approach predicts nonlinear forced response of mistuned bladed disk assemblies considering any type of nonlinearity. In this thesis, special attention is given to the friction contact modeling of bladed disks which is the most common type of nonlinearity found in bladed disk assemblies. In the modeling of frictional contact a friction element which enables normal load variation and separation of the contact interface in three-dimensional space is utilized. Moreover, the analysis is carried out in modal domain where the differential equations of motions are converted to a set of non-linear algebraic equations using harmonic balance method and modal superposition technique. Thus, the number of non-linear equations to be solved is independent of the number of non-linear elements used. On the mistuning identification side, a new method is enclosed herein which makes use of neural networks to assess unknown mistuning parameters of a given bladed disk assembly from its assembly modes, thus being suitable for integrally bladed disks. The method assumes that a tuned mathematical model of the rotor under consideration is readily available, which is always the case for today&rsquo
s realistic bladed disk assemblies. A data set of selected mode shapes and natural frequencies is created by a number of simulations performed by mistuning the tuned mathematical model randomly. A neural network created by considering the number of modes, is then trained with this data set for being used to identify mistuning of the rotor from measured data. On top of these, a new adaptive algorithm is developed for harmonic balance method, several intentional mistuning patterns are investigated via excessive Monte-Carlo simulations and a new approach to locate, classify and parametrically identify structural non-linearities is introduced.

Aquesta tesi examina com les característiques de la feina afecten la satisfacció dels individus. Més concretament, intenta donar resposta a la pregunta: Com afecta la feina i les característiques actuals de la feina associades a la intensificació de l'ús de les tecnologies de la informació i la comunicació (TIC) la satisfacció laboral i la satisfacció amb la vida a Europa? Les conclusions d'aquesta tesi proporcionen informació que és rellevant no només per al món acadèmic, sinó també per a les organitzacions d'empreses, per a la gestió dels recursos humans i per a responsables polítics. En primer lloc, la tesi constata la importància de distingir els tipus de treballadors pel que fa al benestar. En segon lloc, els resultats mostren que els ingressos tenen un paper relativament petit en tots els àmbits de satisfacció i que els factors més importants, i els que s'haurien de preveure als contractes laborals, són més aviat els relacionats amb les condicions laborals i l'organització de la feina. En tercer lloc, els efectes de les TIC són que moderen el paper dels determinants de la satisfacció laboral. Finalment, la tesi mostra que les característiques de la vida laboral afecten la satisfacció amb la majoria dels dominis de la vida.
This thesis examines how work characteristics affect life satisfaction. Specifically addressing the following question: How do jobs and current work characteristics associated with the increased use of ICTs affect job satisfaction and life satisfaction in Europe? The findings of this thesis provide insights that are relevant not only for academia, but also for company organizations, human resources management and policy makers. First, this thesis notes the importance of distinguishing by type of workers concerning wellbeing. Second, the findings show that income plays a relatively small role in all domains of satisfaction. Rather, factors related to working conditions and work organization should be incorporated in job contracts. Third, the effects of ICT are that they moderate the role of the determinants of job satisfaction. Finally, the thesis shows that working life characteristics affect satisfaction with most domains of life. For example, the increasing insecurity in the job market and the challenges experienced by EU workers in achieving a good work-life balance correlate negatively with satisfaction in every domain of life.
Esta tesis examina como las características del trabajo afectan a la satisfacción de los individuos. Más concretamente, intenta dar respuesta a la pregunta ¿Cómo afecta el trabajo y las características actuales del trabajo asociadas con la intensificación del uso de las TIC la satisfacción laboral y la satisfacción con la vida en Europa? Las conclusiones de esta tesis proporcionan información que es relevante no solo para el mundo académico, sino también para las organizaciones de empresas, para la gestión de los recursos humanos y para responsables políticos. En primer lugar, la tesis constata la importancia de distinguir el tipo de trabajadores en cuanto al bienestar. En segundo lugar, los resultados muestran que los ingresos tienen un papel relativamente pequeño en todos los ámbitos de satisfacción y que los factores más importantes, y los que deberían contemplarse en los contratos de trabajo, son los relacionados con las condiciones laborales y la organización del trabajo. En tercer lugar, los efectos de las TIC son que moderan el papel de los determinantes de la satisfacción laboral. Finalmente, la tesis muestra que las características de la vida laboral afectan la satisfacción con la mayoría de los dominios de la vida.

Made available in DSpace on 2014-12-17T14:27:10Z (GMT). No. of bitstreams: 1 KarolineLM.pdf: 1093513 bytes, checksum: 3d3c0a036c6567345f66cc85976fdadb (MD5) Previous issue date: 2008-05-30
The performance of the State in the economic area is only legitimized when to be given in virtue of the protection of the principles established constitutionally. Thus, the economic intervention of the State prioritizes the formation of a joust economic order and in this context, it fulfills to us to define, to the long one of this work, the contours of the intervention of the State in the economic domain in the presence of the Federal Constitution of the Republic of 05 of October of 1988, and, more specifically, in the petroliferous economic sector by means of the interventive contribution instituted after the Constitutional amendment 33/2001, with Law 10.336/2001. With the creation of this institute, in Brazil, emerged innumerable quarrels concerning its constitutional legitimacy, directing uncurling of the research to the study of the state intervention through this contribution and its constitutional limits, in the purpose to demonstrate the parameters for its institution and application. In this way, the interventive contribution in the fuel sector (CIDE-Combust?veis) shows itself as an intervention instrument on the economic domain, acting in way to finance the indirect performance of the State, specially in what concerns to the promotion of the principle of sustainable development principle. Therefore, CIDE-Combust?veis is an able instrument to concretizes the mentioned constitutional principle. Thus, the division of its incomes promotes the consolidation of the principle of the cooperative federalism. In this direction, from premises of the environmental tax law, this intends to demonstrate the utility and constitutionality of this exaction tax, primordially with regard to the realization of the basic right to the balanced environment
A atua??o do Estado na ?rea econ?mica somente se legitima quando se realizar em virtude da prote??o dos princ?pios estabelecidos constitucionalmente. Assim, a interven??o econ?mica do Estado prioriza a forma??o de uma ordem econ?mica justa e, nesse contexto, cumpre-nos definir, ao longo deste trabalho, os contornos da interven??o do Estado no dom?nio econ?mico perante a Constitui??o Federal da Rep?blica de 05 de outubro de 1988, e, mais especificamente, no setor de combust?veis por meio da contribui??o interventiva institu?da ap?s a EC 33/2001, com a Lei 10.336/2001. Com a cria??o deste instituto, no Brasil, vieram ? baila inumer?veis discuss?es acerca de sua legitimidade constitucional, dirigindo-se o desenrolar da pesquisa ao estudo da interven??o estatal por meio desta contribui??o e seus limites constitucionais, no fito de demonstrar os par?metros para sua institui??o e aplica??o. Desta maneira, a CIDE-Combust?veis se mostra como um instrumento de interven??o, atuando de maneira a financiar a atividade do Estado, especialmente no que pertine ? promo??o do princ?pio do desenvolvimento sustent?vel. Nesse mister, a CIDE-Combust?veis se mostra instrumento h?bil a concretiza??o do princ?pio constitucional mencionado. De seu turno, a reparti??o de suas receitas promove a consolida??o do princ?pio do federalismo cooperativo. Nesse sentido, a partir de premissas do direito tribut?rio ambiental, este trabalho procura demonstrar a utilidade e constitucionalidade dessa exa??o tribut?ria, primordialmente no que pertine ? efetiva??o do direito fundamental ao meio ambiente equilibrado

L'aménagement des centres-villes est ici rapproché des mutations politiques, économiques, sociales et religieuses qui ont marqué l'évolution de notre société et ont progressivement transformé la structure et les usages de la ville. Alors que celle-ci s'organisait auparavant autour d'un centre unique, puissant, fédérateur et symbolique, elle s'articule aujourd'hui, sous l'effet de la métropolisation, autour de plusieurs lieux de centralité obéissant chacun à des logiques et à des finalités propres. Face à ces changements structurels, le centre-ville fait l'objet de nouvelles formes d'appropriation qui tendent à remettre en cause son rôle dans le système urbain. Moteur de la cité, le centre ne fonctionne pas en autarcie : bien au contraire, il est dans un rapport constant avec ce qui l'entoure et doit être appréhendé dans sa globalité. Aménager le centre-ville suppose de comprendre la relation unissant ce lieu, reflet d'une certaine fixité du fait de fortes densités urbaines, avec le reste de la ville, caractérisé à l'inverse par une mobilité généralisée. A l'appui d'une analyse rétrospective, cette approche systémique s'inscrit à contre courant de la vision sectorielle du droit de l'urbanisme et vise à démontrer la relation entre l'échec des politiques d'aménagement des centres-villes et celui des politiques d'urbanisation de la périphérie. Parallèlement, le retour à la ville « compacte » préconisé par les pouvoirs publics en vue de limiter l'étalement urbain et les déplacements automobiles soulève une problématique récurrente de l'aménagement des centres : celle de concilier leurs densités et leur accessibilité
In this study, core-city planning is compared with the major political, economic, social and religious mutations that have marked the evolution of our society and have gradually transformed the structure and uses of the city. While it was previously organized around a single powerful, unifying and symbolic centre, today as a result of metropolisation the city is structured around several poles of centrality each in accordance with a specific logic and purpose. Faced with these structural changes, the core-city is subject to new forms of appropriation, which challenge its role in the urban system. As the driving force of the city, the core-city does not exist in isolation: on the contrary, it is in constant interaction with its surroundings and so must be apprehended in its globality. Urban planning and development requires understanding the link between this core, which reflects a certain stability due to high urban density, and the rest of the city, characterized on the contrary by generalized mobility. Based on a retrospective analysis, this systemic approach goes counter to the sectoral vision of urban planning laws and is intended to demonstrate the relationship between the failure of both the core-city planning policies and the planning policies of the periphery. At the same time, a government-advocated return to the "compact city" in order to limit urban sprawl and automobile traffic raises a recurring problem in core-city planning: how to reconcile their density with their accessibility

Indiana University-Purdue University Indianapolis (IUPUI)
The present study sought to examine the impact of technology in permeating the boundaries between individuals’ work and family domains, testing and extending the current theoretical model of boundary management. The first goal, to explore predictors of the boundary management styles (BMS) people use with respect to communication technology (CT), was accomplished by demonstrating that three factors predicted BMS for CT use: preferences for integration, identity centrality, and work/family norms. The second goal, to examine outcomes that could result from varying CT use boundary management styles, was also supported in that BMS for CT use was a predictor of work-family conflict and enrichment. However, one key component of the model was not supported in that perceived control over BMS did not moderate the relationship between BMS and outcomes. Theoretical and practical implications of these findings are discussed, as well as suggestions for future research on boundary theory and CT use. By exploring tangible boundary management behaviors, the present study offers interesting implications that could ultimately assist organizations in developing policies regarding CT use both at home and at work.

Technology has become part of society’s everyday functions, changing rapidly and providing widespread mobility. In South Africa alone, the amount of internet users grew from 8,5 million to 24,9 million in only three years (2011-2014). Currently 90% of these users access this facility from their mobile devices. This statistic illustrates the trend that South Africans are moving towards a continually connected lifestyle, a situation in which information and communication technology (ICT) seems to have become omnipresent. Due the rapid growth of ICT technology and its adoption into people’s lives (both personally and professionally) the influence of such a phenomenon needed to be investigated to understand its impact on individuals and society. Thus, the objective of the present research was to explore the role ICT plays in employees’ work and family domain. The research followed a qualitative research approach and made use of snowball sampling. The sample of participants (N=25) were mostly employees from a professional organisation. Semi-structured interviews were conducted to collect data and the interviews were recorded, transcribed and processed through thematic analyses. The analyses revealed the following four main themes with sub-themes flowing from it: 1) the usage of ICT; 2) the role of ICT usage; 3) the challenges relating to ICT usage; and 4) managing work-life interaction by using ICT. Theme 2 lend itself to be sub-divided into four minor subthemes namely: 1) the positive role of ICT usage; 2) the negative role of ICT usage; 3) the role ICT plays in relationships; and 4) the increased expectations brought about by ICT usage. The current research was not without certain limitations, which should be noted. The researcher only investigated the employees themselves and did not extend the unit of analysis to include the household of employees (esp. the partner or spouse). In addition, the majority of the participants were Afrikaans-speaking males, which is not a true reflection of the multicultural society of South Africa promoting gender equality in the work place. Based on the findings of the present research, various recommendations could be made. Future research could firstly enlarge the sample to be more representative of South Africa’s multicultural and diverse society, and secondly, to include the partner or spouse of employees. Organisations should also consider the implementation of various policies on ICT usage. These directives could include the following: a policy to ensure across the board ICT implementation; an after-work hours policy to ensure as little as possible infringement on employees work-life interaction; and a hierarchical policy ensuring the correct communication channels are followed. Lastly, future research could also do multiple comparative studies on the differences between the degree of ICT adoption, or the amount of ICT devices employees utilise and the impact this has on their work-life interaction. Such research can also investigate how the decrease in face-to-face communication impacts social interaction in both the work and nonwork domains and thereby affects employees’ work-life interaction.
MCom (Industrial Psychology), North-West University, Potchefstroom Campus, 2015

Indiana University-Purdue University Indianapolis (IUPUI)
Theoretically, inter-role conflict can occur between any life domains that place competing demands on an individual. However, inter-role conflict research has mainly focused on the conflict between only two domains: work and family. This limited focus is problematic because it has excluded many other potential life domains in which people participate. In order to focus more attention on other life domains, however, it is necessary to understand which life domains people are participating in. As such, the goal of the present qualitative research was to identify and define the full spectrum of life domains by asking two questions: What life domains are relevant to work-life conflict, and how do people value the various life domains in which they are involved? A total of 13 life domains emerged from the data. Participants engaged in an average of 9 of these domains, indicating that people engage in many activities in life outside just work and family.

The contemporary world of work is undergoing far-reaching changes as a result of global economic developments and technological progress. This has necessitated an appraisal of the school curriculum in order to identify the life skills necessary for vocational success. As the concept of a lifetime career has become obsolete, the accent has shifted to a life chance approach in education. This approach emphasises the wide repertoire of life skills required by learners for successful participation in a range of career possibilities and in the sphere of their personal lives, the two being perceived as inseparable. A literature survey investigated the development of professional careers in historical perspective, the contribution of developmental theorists regarding trends in contemporary career progression, various dimensions of success and what motivates successful men and women in their public and private domains. Furthermore, the adjustments required by dual career couples were examined. Various dimensions of life skills for lifespan competence were investigated, with particular reference to South African society. The life orientation approach currently advocated by the new curriculum in South Africa was briefly described. A qualitative study of the life histories of twelve professionals, forty five years and over was conducted in natural settings in order to explore the life skills responsible for career and personal success. Semi-structured interviews elicited descriptive data from participants, selected by judgement sampling. Data was analysed, discussed and synthesised. The major findings emanated: Success in public and private domains was only possible if a balance between them was maintained. Family background, values and educational experiences created a facilitating environment which contributed to early character development. Certain enabling attributes were essential to achieve both career success and self-fulfilment, even among the less privileged participants. Personal obstacles were confronted and managed. Self-discipline, time management and the maintenance of a healthy lifestyle was vital. The interpenetration of public and private domains was emphasised. A sound work ethic and healthy interpersonal relationships with family, colleagues and the community were crucial. Middle and late adulthood emerged as periods of continuing, dynamic self-development. Based on these findings, recommendations for relevant life skills education were proposed.
Educational Studies
D. Ed. (Comparative Education)

碩士
國立臺灣師範大學
光電科技研究所
99
Optical coherence tomography (OCT), based on low coherence interferometry, is a powerful tool that can support non-contact and high-speed tomographic imaging in biological tissues. Fourier domain optical coherence tomography (FD-OCT) have recently interest in the biomedical imaging research due to their significant sensitivity and imaging speed advantages over time domain OCT. But FD-OCT has a disadvantage in that it possesses the DC noise and the inherent autocorrelation noise and mirror image noise in the final results that make the interpretation of image difficult and degrade the system performance. Therefore, in this research, we developed a balanced detection based FD-OCT system by using a spectrometer with a fiber array simultaneously receive two signals in order to eliminate dc and autocorrelation noise.

Develops a set of frequency domain diagnostic tests for evaluating the dynamic properties of nonlinear general equilibrium rational expectations models that are commonly employed in business cycle research.