The contact-making process of teachers with learners, who present with sensory processing disorder (SPD), has an impact on the learners’ functioning in the classroom. In this study the researcher explored how teachers made contact with these learners by using their senses to accommodate the learners’ unique contact-making style. The involved occupational therapists selected teachers, who taught learners who received occupational therapy for SPD in the age group 7-12 years. The selected teachers participated in unstructured interviews. The case study was used as research method and aimed at gaining deeper insight into and understanding of the teachers’ understanding of and contact-making process with learners with SPD. Erikson’s developmental theory was integrated with the Gestalt theoretical perspective, with focus on the relevant age group. The researcher became aware of contact-making interruptions that occurred during the contact- making process between the teachers and learners with SPD. These interruptions occurred because the teachers did not fully understand the contact-making processes and needs of the learners with SPD. The mentioned contact-making interruptions may occur in various forms. The contact-making interruptions were used by the learners to protect themselves and for organismic self-regulation. During the unstructured interviews the teachers became aware of the importance of the way that they made contact with learners who present with SPD, but they lacked training in the appropriate teaching techniques. The results indicated that teachers needed knowledge about SPD and skills to facilitate and accommodate learners with SPD and to approach them according to their uniqueness. Recommendations were formulated to enhance the teachers’ knowledge about SPD and support the teachers to try other strategies in the classroom to improve the contact-making process with learners who present with SPD. The recommendations made by the researcher were done in support of teachers in order to make sufficient contact with learners who present with SPD, and in doing so, to promote the holistic development of these learners. It is important that teachers are aware of the possible contact-making interruptions used by learners who present with SPD, in order to creatively adjust their own contact-making process and to retry to make and maintain good contact with involved learners by using different senses. This study is a first step in more effective service rendering to learners with SPD, by clarifying issues and shedding light on how teachers cope with this challenge. / Thesis (MA (Psychology))--North-West University, Potchefstroom Campus, 2013.

The contact-making process of teachers with learners, who present with sensory processing disorder (SPD), has an impact on the learners’ functioning in the classroom. In this study the researcher explored how teachers made contact with these learners by using their senses to accommodate the learners’ unique contact-making style. The involved occupational therapists selected teachers, who taught learners who received occupational therapy for SPD in the age group 7-12 years. The selected teachers participated in unstructured interviews. The case study was used as research method and aimed at gaining deeper insight into and understanding of the teachers’ understanding of and contact-making process with learners with SPD. Erikson’s developmental theory was integrated with the Gestalt theoretical perspective, with focus on the relevant age group. The researcher became aware of contact-making interruptions that occurred during the contact- making process between the teachers and learners with SPD. These interruptions occurred because the teachers did not fully understand the contact-making processes and needs of the learners with SPD. The mentioned contact-making interruptions may occur in various forms. The contact-making interruptions were used by the learners to protect themselves and for organismic self-regulation. During the unstructured interviews the teachers became aware of the importance of the way that they made contact with learners who present with SPD, but they lacked training in the appropriate teaching techniques. The results indicated that teachers needed knowledge about SPD and skills to facilitate and accommodate learners with SPD and to approach them according to their uniqueness. Recommendations were formulated to enhance the teachers’ knowledge about SPD and support the teachers to try other strategies in the classroom to improve the contact-making process with learners who present with SPD. The recommendations made by the researcher were done in support of teachers in order to make sufficient contact with learners who present with SPD, and in doing so, to promote the holistic development of these learners. It is important that teachers are aware of the possible contact-making interruptions used by learners who present with SPD, in order to creatively adjust their own contact-making process and to retry to make and maintain good contact with involved learners by using different senses. This study is a first step in more effective service rendering to learners with SPD, by clarifying issues and shedding light on how teachers cope with this challenge. / Thesis (MA (Psychology))--North-West University, Potchefstroom Campus, 2013.

Depuis environ une dizaine d’années, les images hyperspectrales produites par les systèmes de télédétection, “Remote Sensing”, ont permis d’obtenir des informations très fiables quant aux caractéristiques spectrales de matériaux présents dans une scène donnée. Nous nous intéressons dans ce travail au problème de la segmentation non supervisée d’images hyperspectrales suivant trois approches bien distinctes. La première, de type Graph Embedding, nécessite deux étapes : une première étape d’appariement des pixels de patchs de l’image initiale grâce à une mesure de similarité spectrale entre pixels et une seconde étape d’appariement d’objets issus des segmentations locales grâce à une mesure de similarité entre objets. La deuxième, de type Spectral Hashing ou Semantic Hashing, repose sur un codage binaire des variations des profils spectraux. On procède à des segmentations par clustering à l’aide d’un algorithme de k-modes adapté au caractère binaire des données à traiter et à l’aide d’une version généralisée de la distance classique de Hamming. La troisième utilise les informations riemanniennes des variétés issues des différentes façons de représenter géométriquement une image hyperspectrale. Les segmentations se font une nouvelle fois par clustering à l’aide d’un algorithme de k-means. Nous exploitons pour cela les propriétés géométriques de l’espace des matrices symétriques définies positives, induites par la métrique de Fisher Rao. / Hyperspectral images provided by modern spectrometers are composed of reflectance values at hundreds of narrow spectral bands covering a wide range of the electromagnetic spectrum. Since spectral reflectance differs for most of the materials or objects present in a given scene, hyperspectral image processing and analysis find many real-life applications. We address in this work the problem of unsupervised hyperspectral image segmentation following three distinct approaches. The first one is of Graph Embedding type and necessitates two steps : first, pixels of the original image patchs are compared using a spectral similarity measure and then objects obtained by local segmentations are fusioned by means of a similarity measure between objects. The second one is of Spectral Hashing or Semantic Hashing type. We first define a binary encoding of spectral variations and then propose a clustering segmentation relying on a k- mode classification algorithm adapted to the categorical nature of the data, the chosen distance being a generalized version of the classical Hamming distance. In the third one, we take advantage of the geometric information given by the manifolds associated to the images. Using the metric properties of the space of Riemannian metrics, that is the space of symmetric positive definite matrices, endowed with the so-called Fisher Rao metric, we propose a k-means algorithm to obtain a cluster partitioning of the image.

Title: Investigation of titanium alloys using neutron diffraction Author: Gergely Németh Department / Institute: Department of Physics of Materials Supervisor of the master thesis: prof. RNDr. Kristián Mathis, Ph.D., DrSc., Department of Physics of Materials Abstract: Titanium grade 2 was treated by multiple passes of the continuous equal- channel angular pressing technique (CONFORM ECAP) and, after each pass, additionally by rotary swaging. The residual strain field in samples processed by only CONFORM ECAP was studied by neutron diffraction strain scanning. In order to elucidate the microscopic background and calculate the related residual stress field, the local microstructure was thoroughly investigated by various experimental techniques. The microstructure and the deformation behavior of the rotary swaged samples was studied by transmission electron microscopy and by in-situ neutron diffraction during compression. The results of the analyses indicated that microstructural gradients were present in the material as the result of the inhomogeneous deformation during the CONFORM ECAP treatment. These gradients were identified as the main reason of the presence of residual stress fields. The distributions of stress fields calculated based on microstructural parameters were in correlation with simulation...

NiTiHf alloys have attracted considerable attention as potential high temperature Shape Memory Alloy (SMA) but the instability in transformation temperatures and significant irrecoverable strain during thermal cycling under constant stress remains a major concern. The main reason for irrecoverable strain and change in transformation temperatures as a function of thermal cycling can be attributed to dislocation formation due to relatively large volume change during transformation from austenite to martensite. The formation of dislocations decreases the elastic stored energy, and during back transformation a reduced amount of strain is recovered. All these observations can be attributed to relatively soft lattice that cannot accommodate volume change by other means. We have used Equal Channel Angular Extrusion (ECAE), hot rolling and marforming to strengthen the 49.8Ni-42.2Ti-8Hf (in at. %) material and to introduce desired texture to overcome these problems in NiTiHf alloys. ECAE offers the advantage of preserving billet cross-section and the application of various routes, which give us the possibility to introduce various texture components and grain morphologies. ECAE was performed using a die of 90º tool angle and was performed at high temperatures from 500ºC up to 650ºC. All extrusions went well at these temperatures. Minor surface cracks were observed only in the material extruded at 500 °C, possibly due to the non-isothermal nature of the extrusion. It is believed that these surface cracks can be eliminated during isothermal extrusion at this temperature. This result of improved formability of NiTiHf alloy using ECAE is significant because an earlier review of the formability of NiTiHf using 50% rolling reduction concluded that the minimum temperature for rolling NiTi12%Hf alloy without cracks is 700°C. The strain level imposed during one 90° ECAE pass is equivalent to 69% rolling reduction. Subsequent to ECAE processing, a reduction in irrecoverable strain from 0.6% to 0.21% and an increase in transformation strain from 1.25% to 2.18% were observed at a load of 100 MPa as compared to the homogenized material. The present results show that the ECAE process permits the strengthening of the material by work hardening, grain size reduction, homogeneous distribution of fine precipitates, and the introduction of texture in the material. These four factors contribute in the increase of stability of the material. In this thesis I will be discussing the improvement of mechanical behavior and stability of the material achieved after various passes of ECAE.

This study explores how the European Union Enlargement policy of Germany as represented by her main political parties, being the Sozialdemokratische Partei Deutschlands (Social Democratic Party-SPD) and the Christlich Demokratische Union Deutschlands (Christian Democratic Union-CDU), has evolved after 1990 towards the case of Turkey. These two parties have been analysed because they have clear and different stances towards Turkey&rsquo / s EU Accession process and they have witnessed and shaped watershed events of this process. The study does focus on the incumbencies of Helmut Kohl, Gerhard Schr&ouml / der and Angela Merkel. Thereby it relies on both a thorough literature review and also on the screening of plenty of official documents. This study attempts to scrutinize the differences between the stance of the SPD and CDU towards Turkey&rsquo / s EU Accession process. In this vein, it explores the interplay of political reforms and concepts of common culture, identity and history as variables in the altering attitudes of SPD and CDU. Further, this study rests on the ground that there have been breaking points in German support for EU Enlargement first emerged by the end of the Cold War and the concomitant new political climax and second with Turkey&rsquo / s EU Accession process. Ultimately, this study sets on the ground that there has been a shift in Germany&rsquo / s overt support for EU Enlargement which has been triggered by Turkey&rsquo / s entrenched and problematic EU Accession Process.

NiTiHf alloys have attracted considerable attention as potential high temperature Shape Memory Alloy (SMA) but the instability in transformation temperatures and significant irrecoverable strain during thermal cycling under constant stress remains a major concern. The main reason for irrecoverable strain and change in transformation temperatures as a function of thermal cycling can be attributed to dislocation formation due to relatively large volume change during transformation from austenite to martensite. The formation of dislocations decreases the elastic stored energy, and during back transformation a reduced amount of strain is recovered. All these observations can be attributed to relatively soft lattice that cannot accommodate volume change by other means. We have used Equal Channel Angular Extrusion (ECAE), hot rolling and marforming to strengthen the 49.8Ni-42.2Ti-8Hf (in at. %) material and to introduce desired texture to overcome these problems in NiTiHf alloys. ECAE offers the advantage of preserving billet cross-section and the application of various routes, which give us the possibility to introduce various texture components and grain morphologies. ECAE was performed using a die of 90º tool angle and was performed at high temperatures from 500ºC up to 650ºC. All extrusions went well at these temperatures. Minor surface cracks were observed only in the material extruded at 500 °C, possibly due to the non-isothermal nature of the extrusion. It is believed that these surface cracks can be eliminated during isothermal extrusion at this temperature. This result of improved formability of NiTiHf alloy using ECAE is significant because an earlier review of the formability of NiTiHf using 50% rolling reduction concluded that the minimum temperature for rolling NiTi12%Hf alloy without cracks is 700°C. The strain level imposed during one 90° ECAE pass is equivalent to 69% rolling reduction. Subsequent to ECAE processing, a reduction in irrecoverable strain from 0.6% to 0.21% and an increase in transformation strain from 1.25% to 2.18% were observed at a load of 100 MPa as compared to the homogenized material. The present results show that the ECAE process permits the strengthening of the material by work hardening, grain size reduction, homogeneous distribution of fine precipitates, and the introduction of texture in the material. These four factors contribute in the increase of stability of the material. In this thesis I will be discussing the improvement of mechanical behavior and stability of the material achieved after various passes of ECAE.

Lietuva, kaip ir kitos buvusios šalys kandidatės, prieš įstodamos į Europos Sąjungą, turėjo galimybę pasinaudoti Europos Sąjungos finansine parama pagal Specialiąja žemės ūkio ir kaimo plėtros programą ( SAPARD ), kurios tikslas buvo sumažinti skirtumus tarp šalių kandidačių ir Europos Sąjungos vykdomos žemės ūkio politikos. Šalys – kandidatės, siekusios šios programos paramos, turėjo įvykdyti Europos Sąjungos ( toliau ES ) nustatytus reikalavimus. Lietuva, vykdydama šiuos reikalavimus, parengė ir su Europos Komisija suderino Nacionalinę žemės ūkio ir kaimo plėtros programą 2000-2006 metams ( toliau NŽŪKPP ), kuria remiantis ir buvo įgyvendinama SAPARD programa. Vykdant reikalavimus, taip pat buvo įsteigta Nacionalinė mokėjimo agentūrą prie Žemės ūkio ministerijos ( toliau NMA ), kuri padedant LR žemės ūkio ministerijai ( toliau ŽŪM ) buvo atsakinga už SAPARD paramos administravimą. / The purpose of this work to analyse projects is estimation of SAPARD programs and fourth priority of the national SPD in Lithuania, particulary the mainly attention, paying to NPA(National Paying Agency) sharping the settled acreditation criteria of EU.And offermeasures in order to improve estimation of projects in Lithuania.

"Inaugural-Dissertation zur Erlangung des Doktorgrades der Philosophischen Fakultät der Freien Universität Berlin." / Includes bibliographical references (p. 537-580).

Les méthodes conçues pour être incorporées dans des polycristaux de modélisation multi-échelles sont présentées dans ce travail en deux tâches. Ce travail contient des méthodes à moyenne échelle pour capturer les effets des interactions de dislocations de glissement rencontrant des joints de grains maclage et la croissance simultanée de plusieurs fractions de volume de grains maclage sur le durcissement mécanique et l’évolution de la texture. Celles-ci sont mises en œuvre dans un cadre de plasticité cristalline utilisant le code visco-plastic-self consistent de Los Alamos, VPSC-7. Présentés ici, les effets de la croissance simultanée de multiples variantes maclage sur l’évolution de la texture sont suivis à l’aide d’un schéma de transfert de volume double de type Kalidindi. Dans la tâche 1, la mise en œuvre de ce schéma afin de simuler la texture des aciers à plasticité induite par maclage (TWIP) soumis au pressage angulaire à canal égal (ECAP) est résumée. Dans la tâche 2, les effets de durcissement de deux types d’interaction entre les dislocations de glissement et les joints de grain maclage rencontrés, à savoir la transmutation et la dissociation de dislocation, sont capturés au moyen de la modification du modèle de durcissement basé sur la densité de dislocation de [11]. Les interactions du premier type sont présentées dans une relation constitutive calculant la quantité de densité de dislocations attribuée à un système de glissement donné contenu dans la fraction de volume maclage rencontrée à partir de chaque système de glissement en interaction dans la fraction de volume mère. La quantité transmutée à partir de chaque système de glissement en interaction décrit à l’aide de la méthode de correspondance, sur la cartographie des systèmes de glisse- ment d’un grain parent à des systèmes de glissement dans des grains maclage considérés. Des interactions du second type sont ensuite introduites dans cette relation constitutive en tant que paramètre de dissociation, dont la valeur est établie par les observations tirées des résultats des simulations de dynamique moléculaire de [8] et [53]. Ces méthodes sont implantées pour simuler le comportement de durcissement anisotrope du magnésium HCP sous plusieurs chemins de charge / Methods designed for incorporation into multiscale modeling polycrystals are presented in this work in two tasks. This work contains mesoscale methods for capturing the effects of both the interactions of slip dislocations encountering twin grain boundaries and the simultaneous growth of multiple twin grain volume fractions on mechanical hardening and texture evolution. These are implemented in a crystal plasticity framework using the Los Alamos viscoplastic self-consistent code, VPSC-7. Presented here, the effects of simultaneous growth in multiple twin variants on textural evolution is tracked using a Kalidindi-type twin volume transfer scheme. In Task 1, the implementation of this scheme in order to simulate the texture of Twinning Induced Plasticity steels (TWIP) subjected to Equal Channel Angular Pressing (ECAP) are summarized. In Task 2, the hardening effects of two types of interactions between slip dislocations and encountered twin grain boundaries, namely dislocation transmutation and dissociation, are captured by way of modifying the dislocation density based hardening model of [11]. Interactions of the first type are presented in a constitutive relation calculating the amount of dislocation density apportioned to a given slip system contained within the encountered twin volume fraction from each interacting slip system in the parent volume fraction. The amount transmuted from each interacting slip system described using the Correspondence Method, an on to mapping of slip systems in a parent grain to slip systems in considered twin grains. Interactions of the second type are then introduced into this constitutive relation as a disassociation parameter, the value of which is established by observations gleaned from the results of the molecular dynamics simulations of [8] and [53]. These methods are implanted to simulate the anisotropic hardening behavior of HCP magnesium under multiple load paths