Dans le cadre des procédés de clarification d'eau de surface, les flocs formés au cours des étapes de coagulation et de floculation peuvent être séparés de l'eau traitée par décantation ou par flottation. Dans ce dernier cas, le procédé actuellement en vigueur est la flottation à air dissous et présente un certain nombre d'inconvénients. Ainsi, dans ce contexte, la présente thèse consiste à développer un matériau innovant, à la fois flottant et floculant, pour une application dans un procédé de flottation sans air. Dans un premier temps, l'élaboration de billes de polystyrène expansibles utilisant l'eau ou l'éthanol comme agent gonflant a été réalisée. D'autres billes ont ensuite été préparées en présence de 4-(chlorométhyl)styrène comme co-monomère puis la polymérisation par transfert d'atome amorcée en surface (SI-ATRP) de l'acrylamide a été effectuée avec succès. L'impossibilité d'expanser ces matériaux a ensuite conduit à l'exploration de nouvelles voies de synthèse avec la fonctionnalisation de matériaux flottants existants par des techniques de « grafting from » ou « grafting onto ». Quelle que soit la voie envisagée, la première étape a consisté à réduire les fonctions nitrile en amine primaire en présence d'hydrure d'aluminium lithium. Après fonctionnalisation par du bromure de bromoisobutyryle ou du chlorure d'acryloyle, il a été possible de venir greffer de l'acrylamide par SI-ATRP ou de l'amidon via un amorceur redox, respectivement. Les matériaux flottants/floculants obtenus ont été testés lors de flottatests. Les meilleurs résultats ont été obtenus avec les microsphères fonctionnalisées par de l'amidon anionique. Ces dernières ont permis d'abattre la turbidité de l'eau, ont ensuite été régénérées avec succès, par des bains d'acide oxalique ou de dithionite de sodium, et employées durant plusieurs cycles flottatest/régénération avec des résultats reproductibles. / At the end of clarification process, after coagulation-flocculation steps, flocs can be removed from treated water by settling or flotation. In the latter case, Dissolved Air Flotation is the currently used process. However, this method showed important drawbacks, especially an important energetic cost due to the production of air saturated water. In that context, the goal of the reported work dealt with achieving air-free flotation using innovative floating materials. First of all, the synthesis of expandable polystyrene beads using water or ethanol as blowing agent was investigated. Other beads containing both styrene and 4-(chloromethyl)styrene were prepared. Then, surface initiated atom transfer radical polymerization of acrylamide (SI-ATRP) was achieved. Unfortunately, the expansion of such materials was not possible. Therefore, the second part focused on the functionalization of Expancel beads by “grafting from” or “grafting onto” techniques. The first step consisted in reducing some nitrile functions at the surface into primary amine ones. After functionalization with bromoisobutyryl bromide, the SI-ATRP of acrylamide was performed in water at room temperature. On the other hand, the acryloyl chloride was grafted onto amine functions, and grafting of starch was achieved using a redox initiator. All materials obtained have been used for flocculation/flotation tests and demonstrated satisfactory performances in terms of turbidity removal. Beads functionalized with starch have been successfully regenerated with oxalic acid and sodium dithionite and kept appropriate efficiency during several flotation/regeneration cycles.

This paper illustrates the ways in which Kezilahabi’s 1985 dissertation makes its own daring contribution to the field of aesthetic criticism through the proposition of a new critical approach to African literature. Kezilahabi’s starting point for the elaboration this new critical approach is the realization of a prevailing tendency among literary critics to read African literature against formal and aesthetic paradigms deeply rooted in the Western literary and philosophical traditions. Opposed to the adoption of interpretative frames that do not acknowledge the philosophical implications involved in literary analysis, Kezilahabi affirms the importance of approaching literary production from within the artistic and philosophical tradition it stems from. Inspired by hermeneutic philosophy, especially in its “ontological turn” embodied by the philosophy of Martin Heidegger, Kezilahabi’s focus is on literary interpretation as an ontological enterprise aimed at “situating” literature within a horizon of understanding where its proper universe of references can be disclosed.

The study shows how to create a deeper understanding of the educational practice by using intra-active theory and analysis. We have let the five-year-olds at two preschools mark places on the premises which they perceive as rowdy/conflicted. These sites have since been observed and analysed with a focus on how environmental factors make up the situation and the thoughts that are possible to think there. The study has shown that the intra-active analysis method is an effective tool to make visible how educators, children and material combine to create environments with different charge. We have also been able to show how intra-active analysis gives a value to unregulated environments of preschool; how the theory offers an argument for disorder many times can be a prerequisite for children themselves to get space to define what creation can be.

DUBOVEC, M.: Difference of ontological difference in thinking of Martin Heidegger (Master's thesis) Charles University in Prague, Faculty of Humanities, Institute for philosophy and religious studies. Supervisor: doc. Mgr. Aleš Novák, Ph.D. The aim of master's thesis consists in explication of ontological difference in Martin Heidegger's thinking. For this purpose is used a dual method of interpretion of difference in the concept of ontological difference. First it is the issue of the difference as such. For the understanding of this idea it is analyzed the text Onto-Theological Constitution of Metaphysics. The second interpretation od difference concentrate on different understanding of ontological difference. The text Basic Problems of Phenomenology is presented as the opposite one, in which the ontological difference is connected with the temporality. The last part of master's thesis concerns the text On the essence of ground. With this the concept of transcendence is introduced as a subject in which the explication of ontological difference leads. Key words: ontological difference, onto-theology, ecstatic-horizontal temporality, Temporality, transcendence, understanding of Being

The theoretical movement known under the heading of posthumanism has entered the academic field. Posthumanisms most prominent feature is to retrieve the concept of matter into the analytical framework. Matter is understood to be under-theorized within the social sciences as a result of the permeative focus upon language and discourse. A prevailing understanding of posthumanism that has been used within educational science and philosophy thus consists of moving the searchlight from language/discourse onto matter. Notably, these scholars are turning to the philosopher Karen Barad in order to spell out their posthumanistic implications. The aim of the thesis is to give an account of the philosophy of Karen Barad in contrast to other prevailing renderings of her. The analysis is carried out using a contrastive methodological approach. In this study I demonstrate how my reading of Barad differs from the scholarly readings that I choose to engage with. The results show that with an alternative conceptual understanding of Barad’s posthumanistic theory the analysis is being steered towards the entanglement of matter and discourse rather than towards the materialistic components of a posed problem. In addition, the results also show how a focus on the ontological underpinnings of Barad’s theoretical framework can give crucial contributions when it comes to understanding the generative conditions of science and knowledge-making.

H.264/AVC intra prediction method is an efficient tool to reduce spatial redundancies by using multidirectional spatial prediction modes. In this paper, a novel intra prediction method is designed to improve coding efficiency. Firstly, we propose a direction-distance oriented prediction which considers the distance between the predict value and the reference samples according to the direction of the prediction modes. Secondly, we apply the concept of image restoration by using the projections onto convex sets (POCS) to intra prediction which uses adaptively filtering based on the surrounding reconstructed pixel to predict blocks. The experimental results show that the average bit-rate reduction of 0.75% and PSNR gain improved of 0.119dB are achieved.

The doctrine of the mediation of Jesus Christ in the scientific theology of T.F. Torrance rests on the fundamental scientific axiom, derived from the natural sciences, that knowledge is developed in accordance with the nature (kata physin) of the object as it is revealed in the course of scientific inquiry. As a theological realist, Torrance finds real and accurate knowledge of God in Jesus Christ. To know God through the incarnate Son, who is “of one nature with the Father” (homoousios to Patri), is to know God in strict accordance with God’s nature and hence in a theologically scientific way. Scientific theology will operate on a christological basis, for the incarnation of Jesus Christ is the “controlling centre” for the Christian doctrine of God. Torrance’s holistic theology investigates its object of inquiry within the nexus of “onto-relations,” or “being-constituting” interrelations, that disclose its identity. Because the fundamental aspects of reality are relational rather than atomistic, a scientific theological approach to the doctrine of the mediation of Jesus Christ requires that he be investigated within the nexuses of interrelations that disclose his identity as incarnate Saviour of the world. An examination of Torrance’s doctrine of mediation reveals three specific nexuses of “onto-relations” that disclose the identity of Jesus Christ. These are his interrelations with 1) historical Israel, 2) God, and 3) humanity. In the present thesis, the vast and scattered array of Torrance’s thought on the mediation of Jesus Christ is reduced to a minimal number of basic concepts, or “elemental forms,” that arise from the nexuses of interrelations that constitute the identity of the incarnate Son. These basic, constitutive concepts of Torrance’s doctrine of the mediation of Christ are the Nicene homoousion and the Chalcedonian doctrine of the hypostatic union, as well as the doctrines of incarnational redemption and the “vicarious humanity” of Jesus Christ. These elemental forms provide a basic, organising framework to examine and explain the mediation of revelation and reconciliation of Jesus Christ in the scientific theology of T.F. Torrance. / Thesis (PhD (Church and Dogma History))--North-West University, Potchefstroom Campus, 2013

The doctrine of the mediation of Jesus Christ in the scientific theology of T.F. Torrance rests on the fundamental scientific axiom, derived from the natural sciences, that knowledge is developed in accordance with the nature (kata physin) of the object as it is revealed in the course of scientific inquiry. As a theological realist, Torrance finds real and accurate knowledge of God in Jesus Christ. To know God through the incarnate Son, who is “of one nature with the Father” (homoousios to Patri), is to know God in strict accordance with God’s nature and hence in a theologically scientific way. Scientific theology will operate on a christological basis, for the incarnation of Jesus Christ is the “controlling centre” for the Christian doctrine of God. Torrance’s holistic theology investigates its object of inquiry within the nexus of “onto-relations,” or “being-constituting” interrelations, that disclose its identity. Because the fundamental aspects of reality are relational rather than atomistic, a scientific theological approach to the doctrine of the mediation of Jesus Christ requires that he be investigated within the nexuses of interrelations that disclose his identity as incarnate Saviour of the world. An examination of Torrance’s doctrine of mediation reveals three specific nexuses of “onto-relations” that disclose the identity of Jesus Christ. These are his interrelations with 1) historical Israel, 2) God, and 3) humanity. In the present thesis, the vast and scattered array of Torrance’s thought on the mediation of Jesus Christ is reduced to a minimal number of basic concepts, or “elemental forms,” that arise from the nexuses of interrelations that constitute the identity of the incarnate Son. These basic, constitutive concepts of Torrance’s doctrine of the mediation of Christ are the Nicene homoousion and the Chalcedonian doctrine of the hypostatic union, as well as the doctrines of incarnational redemption and the “vicarious humanity” of Jesus Christ. These elemental forms provide a basic, organising framework to examine and explain the mediation of revelation and reconciliation of Jesus Christ in the scientific theology of T.F. Torrance. / Thesis (PhD (Church and Dogma History))--North-West University, Potchefstroom Campus, 2013

Tesis para optar al grado de Magíster en Filosofía mención en Metafísica. / En este trabajo pretendemos plantear lo que atañe a la cuestión de Dios en la reflexión de Heidegger y presentar su percepción frente el tema. En general, la obra de Heidegger se desenvuelve en un marco de reservada cautela ante el problema de Dios Resulta apresurado sostener que él afirma filosóficamente a Dios, como también lo es sostener que lo niega. Pareciera que su tesis fundamental en este punto es que Dios ha desaparecido de nuestro horizonte vital y no tenemos claridad respecto a su realidad o irrealidad. Por fortuna, nos indica el mismo Heidegger, aún tenemos indicios que alientan una esperanza de encontrarlo aunque ésta no parece transitar ya por los caminos de la religión, la cual, fuertemente influenciada por la metafísica, más bien, ha favorecido su evaporación y ha impedido su búsqueda auténtica. Para él, sólo resulta posible un nuevo acceso a lo divino desde la fecundidad auroral de un nuevo inicio. Un nuevo inicio ya emprendido por los vigilantes de la casa del ser, los poetas.

Le thème choisi - la métaphysique de F. Suarez - me permet, je pense, une grande ouverture, tant vers la scolastique, que vers la modernité. Dans cette perspective, F. Suarez peut être considéré comme un lanus Bifrons. Mon projet viserait la réalisation d'une thèse bâtie en trois parties. Ces trois parties sont délimitées par l'angle sous lequel j'aborde l’œuvre de F. Suarez. Il s'agit d'une perspective i)historique, ii) critique et iii) réflexive. La perspective historique consisterait dans une analyse diachronique, afin de surprendre la nouveauté du moment suarézien dans la métaphysique scolastique. La perspective critique me permettra d'entamer l'analyse proprement dite le système suarézien de la métaphysique. La perspective réflexive résidera dans un questionnement du projet suarézien à la lumière de la théologie byzantine. Le biais serait le problème de l'analogie.Dans cette thèse je voudrais montrer ce qu'on gagne et ce qu'on perd à partir du "moment F. Suarez". / I chose to approach this theme - F. Suarez's metaphysics - because it gives me the opportunity of a great opening, both to scholasticism and to modernity. From this point of view,Suarez may be considered a lanus Bifrons. My project aims at achieving a triadic structured thesis. It is about a: 1) historical ; 2)critical and 3) reflexive perspective. The historical perspective consists in a diachronic analysis,in trying to grasp the novelty of the Suarezian moment in scholastic metaphysics. The critical perspective allows me to analyze properly the metaphysical system elaborated by Suarez, at the same time trying to interpret the unpublished elements proposed by the Jesuit in Disputationes Metaphysicae. The reflexive perspective consists in problematizing the Suarezian project in the light ofthe Byzantine theology. The leading wire is represented by the analogy.Through this thesis, I wanted to have the opportunity to say what is won and what is lostonce with "the F. Suarez moment".