Pour étudier le phénomène paradoxal d’un renforcement de l’autonomie de la volonté parallèlement à une multiplication des impérativités en droit international privé contemporain, le concept de norme permissive apparaît particulièrement pertinent. Il permet de saisir l’ensemble des énoncés normatifs où l’auteur de la norme octroie à un destinataire une faculté de faire ou de ne pas faire, qu’il s’agisse du juge lorsqu’il lui est permis de surseoir à statuer en cas de connexité ou des parties lorsqu’il leur est permis de choisir la loi applicable à un contrat international.L’étude du droit positif montre que les manifestations des normes permissives sont nombreuses, tant dans les conflits de lois que de juridictions et qu’elles obéissent à des logiques distinctes selon qu’elles octroient une faculté au juge ou aux parties. Dans cette seconde hypothèse, en effet, il n’est plus question d’une liberté octroyée par la règle de droit mais d’une liberté concédée dans le choix de la règle de droit. Cette spécificité, conjuguée à la multiplication des normes permissives en droit international privé, a donc justifié que leur efficacité soit éprouvée.Dans cette perspective, le présupposé selon lequel les normes permissives constitueraient une traduction normative adéquate de l’objectif de prévisibilité des solutions, qui sert de justification à leur admission, doit être remis en cause. L’appréciation critique de ce postulat permet de proposer que les normes permissives n’occupent, à l’avenir, qu’un rôle résiduel en droit international privé, soit comme instrument de consensus soit comme palliatif à l’indétermination d’un critère de rattachement suffisamment prévisible. / In order to study the paradoxical phenomenon of the rise of party autonomy in parallel with the multiplication of mandatory norms in contemporary private international law, the concept of permissive rule is particularly apposite. It accounts for all instances where the law-making body grants a beneficiary the possibility to do or not to do something; be it the judge when he is authorized to stay the proceedings in case of related actions, or the parties when they are authorized to choose the law applicable to an international contract.A study of the positive law shows that permissive rules are numerous in both Choice of laws and Jurisdiction and that they operate under distinct logics depending on whether they grant a possibility to a judge or to the parties. In the latter case, the issue at stake is no longer whether a right is granted by the legal rule, but rather whether a right is conceded in the choice of the legal rule. This specificity, together with the proliferation of permissive rules in private international law, warrants that their relevancy be tested.In this context, the assumption that permissive norms would adequately serve the purpose of foreseeability of solutions, which forms the basis for their adoption, must be questioned. This critical assessment leads to the proposal that permissive norms should, in the future, play only a residual role in private international law, either as a way to reach consensus or as a stopgap in the absence of a sufficiently foreseeable connecting factor.

Le syndrome reproducteur et respiratoire porcin (SRRP) est une des maladies les plus dévastatrices économiquement pour l'industrie mondiale du porc. L'agent étiologique du SRRP est le virus du SRRP (VSRRP) lequel est connu pour avoir une spécificité d'hôte très restreinte et pour sa transmission par voie aerosol. Les antigènes et les ARN du VSRRP ont été trouvés dans des cellules épithéliales du tractus respiratoire de porcs infectés par le virus. L’interaction entre les macrophages alvéolaires porcins (PAMs) et le VSRRP a été démontrée comme jouant un rôle important dans l’infection causée par le virus. Malgré cela, l’interaction prenant place entre les cellules épithéliales du tractus respiratoire porcin et le virus ne devrait pas être négligée. Jusqu’à présent, la réplication du VSRRP in vitro dans des cellules épithéliales du tractus respiratoire porcin n’a pas été conduite avec succès et les tentatives pour le faire ont échoué. Une nouvelle lignée de cellules épithéliales de poumon de porc (SJPL) est maintenant disponible et sera utilisée dans cette étude afin de déterminer si elle est permissive à la réplication du VSRRP et si elle peut être un modèle approprié pour l’étude de la pathogénèse virale du VSRRP. L’expérimentation a démontré que cette nouvelle lignée cellulaire était permissive à l’infection et à la réplication du VSRRP. Afin de corroborer ces résultats, la cinétique de réplication du virus à été effectuée avec les cellules MARC-145 et SJPL. Aucune différence significative dans la production virale totale n’a été trouvée entre les deux lignées cellulaires. Les cellules SJPL ont permis la réplication de plusieurs souches Nord-Américaines du VSRRP, quoiqu’elles sont légèrement moins efficaces que les cellules MARC-145 pour l’isolement du virus. De plus, les cellules SJPL sont phénotypiquement différentes des cellules MARC-145. Plus précisément, les cellules SJPL sont plus sensibles à l’activation par le VSRRP des pro-caspases 3/7 et plusieurs inducteurs apoptotiques. Elles ont également montré de 8 à 16 fois plus de sensibilité à l’effet antiviral causé par l’IFN-α sur la réplication du virus contrairement aux cellules MARC-145. Ces résultats démontrent que les cellules SJPL pourraient représenter un substitut intéressant aux cellules MARC-145 pour la production d’antigènes pour un vaccin anti-VSRRP. Également, dû à leurs origines (poumon de l’hôte naturel), elles pourraient s’avérer être un modèle in vitro plus approprié pour l’étude de la pathogénèse du VSRRP. / Porcine reproductive and respiratory syndrome (PRRS) is one of the most economically devastating diseases for the pig industry worldwide. The etiological agent of PRRS is the PRRS virus (PRRSV), which is known to have a very restricted host specifity and to be airborne transmitted. PRRSV RNAs and antigens were found in epithelial cells of the respiratory tract of swine in PRRSV-infected pigs. Even if the interaction between porcine alveolar macrophages (PAMs) and PRRSV plays an important role in the PRRSV infection, the role of the interaction between epithelial cells of the swine respiratory tract and PRRSV should not been neglected. However, no epithelial cells of the swine respiratory tract have been demonstrated to allow PRRSV replication in vitro and attempts to generate such a cell line have failed. The goal of this study is to determine whether epithelial cells of the swine respiratory tract are permissive to PRRSV replication and are a suitable model for studying the viral pathogenesis of PRRSV. We have discovered that the SJPL cell line, an epithelial cell line of the respiratory tract of swine, is permissive to PRRSV infection and replication. To corroborate these results, PRRSV replication kinetics were evaluated in a subclone of the African green monkey kidney MA104 cells (MARC-145), which has been known to be fully permissive to PRRSV infection and replication, and in SJPL cells. No significant difference was found between the two cell lines for overall viral production. Moreover, the SJPL cells were able to permit the replication of several PRRSV North-American strains but they were slightly less efficient for virus isolation than MARC-145 cells. In addition, SJPL is phenotypically different from MARC-145. Specifically, the SJPL cells were more sensitive to procaspases 3/7 activation by PRRSV and several apoptotic inducers compared to MARC-145 cells. In addition, the SJPL cells showed 8 to 16 times more sensitivity to the antiviral effect of IFN-α against PRRSV replication than MARC-145 cells. Altogether, the SJPL cells could be an interesting substitute to MARC-145 cells for PRRSV vaccine antigen production, and could be a more relevant in vitro model, because of their origin (lung of the natural host), to study the pathogenesis of PRRSV.

Text in Afrikaans / Teen die agtergrond van toenemende gewelddadige gedrag binne die konteks van verskillende bevolkingsgroepe en gemeenskappe, is reeds ·heelwat navorsing ten opsigte van die aard en oorsake van aggressiewe gedrag onderneem. Aggressiwiteit as vorm van afwykende gedrag is nog nooit deur die onderskeie gemeenskappe in die Republiek van Suid-Afrika aanvaar nie. Die oorsake van aggressiwiteit word deur verskillende navorsers vanuit wydverspreide ooghoeke benader. Hoewel fisiologiese oorsake van aggressiewe gedrag nie deur die skrywer ontken word nie, word in hierdie studie die volwasse mens as verantwoordelike en verantwoordbare wese se motivering vir aggressiewe gedrag van naderby beskou. 'n Weldeurdagte literatuurstudie oor aggressiwiteit sowel as die basiese hunkeringe van die mens in die kontemporer-moderne wereld, het aan die lig gebring dat mense verskillend optree al sou hulle aan dieselfde samelewingseise blootgestel word. Ervaringsreste, veral ten opsigte van pedagogiese verhoudings, blyk 'n groat rol in die vorming van die selfbeeld sowel as belewing en hantering van krisissituasies te speel. Die mens staan nooit alleen in die wereld nie, maar is voortdurend in 'n verhouding betrokke. Die noodwendigheid van verhoudings raak horn as sosiale wese, en is ten nouste gekoppel aan belewing en beagting van die self. Defhalwe word die ervaring van verhoudings uit veral die kinderdae, of te wel pedagogiese verhoudings, as van deurslaggewende belang by die vorming van die selfbeeld beskou. Die bevindinge van hierdie studie is geverifieer by wyse van 'n idiografiese ondersoek. Gevangenes wat aggressiewe misdade gepleeg het, is op vrywillige basis by die navorsing betrek. Na aanleiding van genoemde bevindings is dit nodig geag om 'n gestandaardiseerde vraelys vir die meting van elkeen se selfbeeldstand in te skakel. Aanbevelings is geformuleer nadat insig uit navorsingsresultate ten aansien van die interafhanklikheid van pedagogiese verhoudings, selfbeeldvorming en aggressiwiteit, verkry is. Hierdie aanbevelings is veral gerig op steungewende, terapeutiese begeleiding van die aggressiewe oortreder sodat hy vaardighede kan aanleer waar~olgens hy lewenskrisisse kan begryp en hanteer. / Extensive research has already been undertaken in respect of the nature of aggression against the background of increasingly violent behaviour within different population groups and communities. Aggression as a form of deviant behaviour has never been accepted by the various communities in the Republic of South Africa. Researchers have investigated the causes of aggression from a wide range of perspectives. Although the author does not deny the existence of physiological causes of aggressive behaviour, this research focuses on the motivation for aggressive behaviour in the adult as responsible and accountable being. A thorough study of the literature concerning aggression as well as, the basic yearnings of man in the contemporary modern world, revealed a diversity in human behaviour even when people were confronted with the identical demands of society. Past experience, especially in connection with pedagogic relations, appears to have an important impact on not only the formation of the self-image but also how people experience and cope with crisis situations. Man is never in the world in isolation but is continuously involved in relationships. This essentiality of relationships affects him as a social being and is intimately a,ssociated with the experiencing and evaluation of the self. Experiences with relationships, especially in childhood, that is pedagogic relationships, are therefore, of cardinal importance in self-image formation. The findings of this research were verified by means of ideographic studies. Prisoners who had perpetrated violent crimes were included in this research on a voluntary basis. In accordance with the findings it was considered necessary to incorporate a standardized questionnaire to measure the state of the self-image of each prisoner. Recommendations were formulated after obtaining insight arising from research findings which focussed on the interdependence of pedagogic relationships, self-image formation and aggression. These recommendations are mainly directed at the supportive therapeutic guidance of the aggressive transgressor in order that he may acquire skills to understand and cope with the crises of life. / Educational Studies / D. Ed. (Filosofie van die Opvoeding)

The outset of this study is to contribute to the literature concerning China’s increasing economic interest to engage in the African context, its economies and resource abundandce. The overarching research problem is that the approaches held by the respective African state entities may facilitate increasing development gains for the recipient state of this economic interest in principle. To adress this research problem the study is undertaken by conducting a comparative case study where three cases/states, with presumably diverging economic and political status, are likely to effect their overall state approaches differently. Research questions, which are addressed by the creation of an idealtype analytic matrix, concern whether the states of South Africa, Zambia and Zimbabwe take on a more ‘permissive’ or ‘restrictive’ approach towards China’s economic interst and whether the approaches can be looked upon on both aggratege and case/area-specific levels. The main findings are that a clear tendency of the ‘permissive approach’ may be noted on a aggregate level for all cases. Further, the cases’ economic and poltical status does not necessarily effect this aggregate tendency but but rather the dynamics in case-specific areas deemed relevant in this analysis. The desire to grasp the interest seems greater than internal dynamics.

The main aim of the present study was to explore the relationship between parenting styles, as used by the pre-school parent and the social behaviour of the five-year old. Specific attention was given to three main parenting styles: authoritative, authoritarian and permissive. The eight developmental perspectives applicable for the five-year old were also discussed. The research was conducted according to the quantitative approach. The Parental Styles Dimensions Questionnaire (PSDQ) was completed and returned by a sample of 30 parents (N=30) from Evergreen Pre-primary in Gauteng. The representative sample of five-year olds being observed by the teacher were 24 pupils (N=24). The teacher rated the five-year olds' behaviour using the Behavioural Questionnaire (BQ). These results indicated primarily that the Authoritative Parenting Style was most used by the parents of the five-year old group and that this Parenting Style tends to lead to more acceptable social behaviour among the five-year olds. / Social Work / M. Diac.(Play Therapy)

Text in Afrikaans / In hierdie studie word die metableties-eksemplariese aanloop tot die globaliseringsverskynsel ondersoek. Daar word gekonsentreer op die benadering van vier f ilosowe wat met reg die f ilosof iese wegbereiders van bogenoemde verskynsel genoem kan word. Feuerbach, Marx, Nietzsche en Dewey het gewis •n belangrike bydrae tot die bevordering van die Globalisme gelewer. Vervolgens word op die aanloop tot •n plurale samelewingsverband en die fundamentele rol van verskeie ideologiee gef okus. Verskeie globalistiese en inoutentieke opvoedings- en onderwysbenaderings word ook ontleed om die neerslag van die Globalisme op onderwysgebied aan die lig te bring. Die berekende denke voer die botoon in die globalistiese bestel, gevolglik word die besinnende denke nie in die opvoeding en onderwys in aanmerking geneem nie. Die globaliseringsverskynsel het onder andere die volgende implikasies vir die opvoeding en onderwys: Inoutentieke beroepsafrigting. Identiteitskrisis. Ontheemding Waarde- en normrelativisme. Gedegradeerde mens- en kindbeskouing. Sins- en waarheidsverduistering. / The metabletic-exemplary advance of the phenomenon of Globalism is examined in this study. The approach of four philosophers who may aptly be described as the philosophical pioneers of Globalism, has been focused upon. Feuerbach, Marx, Nietzsche and Dewey have certainly made an important contribution towards the advancement of this phenomenon. The advent of a pluralistic societal structure and the fundamental role of several ideologies, responsible for the advancement of a globalistic society, will also be focused upon. Various inauthentic and globalistic approach~s to education are analised in order to illustrate the impact of Globalism on education. Natural-scientific thought sets the pace in the globalistic order, with the result that reflective thought is not taken into account in education. The implications of the globalistic phenomenon for education are the following: Inauthentic job training. Identity crisis. - Alienation. - Value and norm relativism. - Degraded view of mankind and the child. - Obscurity of truth and meaning. / Educational Studies / M. Ed. (Historiese Opvoekunde)

The main aim of the present study was to explore the relationship between parenting styles, as used by the pre-school parent and the social behaviour of the five-year old. Specific attention was given to three main parenting styles: authoritative, authoritarian and permissive. The eight developmental perspectives applicable for the five-year old were also discussed. The research was conducted according to the quantitative approach. The Parental Styles Dimensions Questionnaire (PSDQ) was completed and returned by a sample of 30 parents (N=30) from Evergreen Pre-primary in Gauteng. The representative sample of five-year olds being observed by the teacher were 24 pupils (N=24). The teacher rated the five-year olds' behaviour using the Behavioural Questionnaire (BQ). These results indicated primarily that the Authoritative Parenting Style was most used by the parents of the five-year old group and that this Parenting Style tends to lead to more acceptable social behaviour among the five-year olds. / Social Work / M. Diac.(Play Therapy)

Text in Afrikaans / In hierdie studie word die metableties-eksemplariese aanloop tot die globaliseringsverskynsel ondersoek. Daar word gekonsentreer op die benadering van vier f ilosowe wat met reg die f ilosof iese wegbereiders van bogenoemde verskynsel genoem kan word. Feuerbach, Marx, Nietzsche en Dewey het gewis •n belangrike bydrae tot die bevordering van die Globalisme gelewer. Vervolgens word op die aanloop tot •n plurale samelewingsverband en die fundamentele rol van verskeie ideologiee gef okus. Verskeie globalistiese en inoutentieke opvoedings- en onderwysbenaderings word ook ontleed om die neerslag van die Globalisme op onderwysgebied aan die lig te bring. Die berekende denke voer die botoon in die globalistiese bestel, gevolglik word die besinnende denke nie in die opvoeding en onderwys in aanmerking geneem nie. Die globaliseringsverskynsel het onder andere die volgende implikasies vir die opvoeding en onderwys: Inoutentieke beroepsafrigting. Identiteitskrisis. Ontheemding Waarde- en normrelativisme. Gedegradeerde mens- en kindbeskouing. Sins- en waarheidsverduistering. / The metabletic-exemplary advance of the phenomenon of Globalism is examined in this study. The approach of four philosophers who may aptly be described as the philosophical pioneers of Globalism, has been focused upon. Feuerbach, Marx, Nietzsche and Dewey have certainly made an important contribution towards the advancement of this phenomenon. The advent of a pluralistic societal structure and the fundamental role of several ideologies, responsible for the advancement of a globalistic society, will also be focused upon. Various inauthentic and globalistic approach~s to education are analised in order to illustrate the impact of Globalism on education. Natural-scientific thought sets the pace in the globalistic order, with the result that reflective thought is not taken into account in education. The implications of the globalistic phenomenon for education are the following: Inauthentic job training. Identity crisis. - Alienation. - Value and norm relativism. - Degraded view of mankind and the child. - Obscurity of truth and meaning. / Educational Studies / M. Ed. (Historiese Opvoekunde)