No description available.

The simplest combinational logic circuits are made by inverting the output of a fundamental logic gate. Despite this simplicity, these gates are vital. In fact, we can realize any truth table using a circuit made only from AND gates with inverted outputs.

No description available.

La thèse est consacrée à l’étude de la diffraction en utilisant le détecteur ATLAS auprès du LHC. Après Une courte introduction à la physique diffractive incluant la diffraction « dure » et « molle », nous présentons la production diffractive exclusive qui est particulièrement intéressante pour produire des jets et le boson de Higgs. Le mécanisme décrit par le formalisme de Khoze Martin et Ryskin et celui de CHIDe sont décrits en détail. Les sources d’incertitude dans la description théorique sont encore importantes et une nouvelle mesure de la section efficace de production exclusive de jets au LHC permettra de réduire l’incertitude de la production diffractive de boson de Higgs à un facteur 2 à trois. La mesure de la production exclusive de pions pp ! p_+_−p permet de contraindre les modèles de manière plus précise en utilisant les détecteurs ALFA, qui sont utilisés dans l’expérience ATLAS pour la détection de protons diffusés dans les interactions élastiques et diffractives. Les détecteurs AFP décrits dans la dernière partie de la thèse, mesurant les protons dispersés après interaction diffractive sont présentés. Ils permettent d’étendre le programme de physique d’ATLAS, avec en particulier, la production centrale diffractive de boson W, ce qui rend possible une meilleure compréhension de la nature des échanges diffractifs. / The thesis is devoted to the study of diffractive physics with the ATLAS detector at the LHC. After a short introduction to diffractive physics including soft and hard diffraction, we discuss diffractive exclusive production at the LHC whichis particularly interesting for Higgs and jet production. The QCD mechanism described by the Khoze Martin Ryskin and the CHIDe models are elucidated in detail. The uncertainties on these models are still large and a new possible exclusive jetmeasurement at the LHC will allow to reduce the uncertainty on diffarctive Higgs boson production to a factor 2 to 3. An additional measurement of exclusive pion production pp ! p_+_−p allows to constrain further exclusive model relying on theuse of the ALFA stations, which are used in the ATLAS Experiment for detection of protons scattered in elastic and diffractive interactions. In the last part of the thesis, the AFP detectors, aiming at measuring the protons scattered in diffractive interactions, are presented. They allow to extend substantially the ATLAS physics programme. In particular, the study of the central diffractive W boson production process makes possible a better determination of the nature of diffractive exchanges.

<p>The study proposed to conduct a descriptive study related to the correlation of infant feeding (EFF or EBF) and occurrence of morbidity diarrhoea and/or respiratory infections, in infants by 14 weeks of age. The study adopted a quantitative epistemological approach in seeking to describe the correlation of infant feeding and the occurrence of diarrhoea or respiratory infections by 14 weeks of age. The researcher embarked on a descriptive survey design and employed the questionnaire method during the data collection process. The Amathole District of the Eastern Cape Province was selected due to the accessibility of the targeted population. The unique demographic profile and rural-urban setting allows for a potentially rich data source whilst simultaneously reducing the potential incidence of bias in the data collection. The study sample was drawn from routine immunization and growth monitoring clinics in the Amathole district.</p>

<p>The study proposed to conduct a descriptive study related to the correlation of infant feeding (EFF or EBF) and occurrence of morbidity diarrhoea and/or respiratory infections, in infants by 14 weeks of age. The study adopted a quantitative epistemological approach in seeking to describe the correlation of infant feeding and the occurrence of diarrhoea or respiratory infections by 14 weeks of age. The researcher embarked on a descriptive survey design and employed the questionnaire method during the data collection process. The Amathole District of the Eastern Cape Province was selected due to the accessibility of the targeted population. The unique demographic profile and rural-urban setting allows for a potentially rich data source whilst simultaneously reducing the potential incidence of bias in the data collection. The study sample was drawn from routine immunization and growth monitoring clinics in the Amathole district.</p>

Magister Curationis - MCur / The study proposed to conduct a descriptive study related to the correlation of infant feeding (EFF or EBF) and occurrence of morbidity diarrhoea and/or respiratory infections, in infants by 14 weeks of age. The study adopted a quantitative epistemological approach in seeking to describe the correlation of infant feeding and the occurrence of diarrhoea or respiratory infections by 14 weeks of age. The researcher embarked on a descriptive survey design and employed the questionnaire method during the data collection process. The Amathole District of the Eastern Cape Province was selected due to the accessibility of the targeted population. The unique demographic profile and rural-urban setting allows for a potentially rich data source whilst simultaneously reducing the potential incidence of bias in the data collection. The study sample was drawn from routine immunization and growth monitoring clinics in the Amathole district. / South Africa

Les contrats de distribution exclusive sont couramment utilisés dans la mise en marché des produits. Des doutes et des critiques ont été, pourtant, soulevés relativement à leur validité au regard du droit de la concurrence. Ces ententes et les pratiques qui en découlent paraissent, à première vue, anticoncurrentielles. Le propos de ce mémoire est d’examiner dans quelle mesure les contrats de distribution exclusive peuvent, en fait, stimuler la concurrence et de montrer, en conséquence, qu’ils devraient être considérés licites eu égard au droit de la concurrence. Nous trouvons, d’une part, que les pratiques exclusives sont suspectes vu qu’elles réduisent la liberté contractuelle du producteur et du distributeur. Cette restriction est susceptible d’entraver la concurrence à cause du pouvoir de marché qu’elle crée et elle peut, de ce fait, engendrer le monopole. La Loi sur la concurrence interdit de tels agissements. Les contrats de distribution exclusive peuvent, d’autre part, favoriser réellement la concurrence. Ils constituent un instrument stratégique utilisé par les entrepreneurs dans leur lutte pour accroître leur part de marché. La distribution exclusive, en portant les acteurs commerciaux à chercher les meilleures stratégies, renforce la concurrence. Celle-ci doit être entendue non seulement comme une constante rivalité entre toutes les entreprises, mais elle doit aussi inclure la coopération entre certaines entreprises en vue de mieux concurrencer d’autres à un niveau plus général. Une juste appréciation de la concurrence dans les contrats de distribution exclusive requiert le recours à l’analyse économique du droit. Cette analyse permet une évaluation de la concurrence basée sur le critère de l’efficience économique. En vue de déterminer si une pratique donnée augmente ou non le bien-être général (sur quoi l’analyse de l’efficience met l’accent), les effets négatifs de cette pratique devraient être mis en balance avec ses effets positifs résultant des gains en efficience. C’est dans ce sens que le droit de la concurrence a évolué tant dans l’Union européenne qu’aux États-Unis et au Canada pour permettre les ententes qui entraînent des gains nets d’efficience. Ce qu’on aurait pu condamner autrefois pour entrave à la concurrence, peut maintenant paraître comme une stratégie commerciale licite et saine. Compte tenu de ce récent développement, notre analyse nous conduit à la conclusion que les accords de distribution exclusive devraient être considérés licites dans la mesure où ils améliorent le bien-être du consommateur. / Exclusive distribution agreements are commonly used in the marketing of products. However, doubts and criticisms have been expressed concerning their validity as regards competition law: these agreements and the resulting practices appear at first blush to be anticompetitive. In this thesis we propose to examine to what extent exclusive distribution agreements can in fact foster competition and hence should be considered lawful as regards competition law. On one hand, we find that exclusive distribution practices are suspect, because the contractual freedom of the producer and of the distributor is restricted. This restriction may hinder interbrand competition due to market power and can potentially create a monopoly. Such actions are not permissible under the Competition Act. On the other hand, some aspects of exclusive distribution arrangements can actually promote competition. They constitute a strategic tool used by suppliers seeking to increase their market shares. This can reinforce competition by encouraging competitors to try out better strategies. Competition must be understood not merely as the constant rivalry amongst all enterprises, but must also encompass cooperation between certain enterprises in order to better compete with others at a more general level. A fair appreciation of competition in exclusive distribution arrangements requires one to have recourse to the economic analysis of law. The economic analysis of law allows one to assess competition based on the criterion of economic efficiency. In order to determine whether or not a particular practice increases the general welfare ( on which efficiency analysis focuses), the negative effects of that practice should be weighed against its positive effects resulting from efficiency gains. In this sense, competition law has evolved, as much in the European Union, as in the United States and Canada, to allow arrangements that lead to net welfare gains. What might have been previously condemned as an obstacle to competition may now appear as a legitimate and healthy commercial strategy. Taking into account this recent development, our analysis leads us to the conclusion that exclusive distribution agreements should be lawful in so far as they improve consumer welfare.

<p>Promotion of exclusive breastfeeding (EBF), (giving breast milk only without any solids or liquids), has proved to be very challenging in the South African context, although this infant feeding practice has been found to protect babies against diarrhoea and respiratory tract infections and to carry a lower risk of HIV infection than mixed feeding (breastfeeding combined with formula or solids). Study design: The PROMISE-EBF study is a multi-country cluster randomised trial to examine peer support to promote exclusive breastfeeding in Africa. For the South African site in the PROMISE-EBF study, three sites, Paarl, Rietvlei and Umlazi, were selected because of their different geographic settings and each site operated as a separate stratum for cluster selection and randomisation purposes. The clusters were then randomised into intervention and control arms making a total of 17 clusters in each arm. HIV positive and negative women in the intervention arm received support on their choice of infant feeding from the peer supporters who visited them at their homes while the women in the control group only received the standard infant feeding counselling and support provided by health care&nbsp / workers at health facilities. Data collection: Mothers were interviewed at recruitment during the antepartum period to establish eligibility, obtain informed consent and data on socio-economic status. Home visits were scheduled for data collection by trained data collectors at 3, 6, 12 and 24 weeks after birth. Analysis of results: This mini-thesis was a secondary analysis of the PROMISE-EBF data focusing on the South African data only. The data was adjusted for clustering and analysed using SAS. Comparison of variables between the intervention and control groups within sites was done. Results: A significant difference, regarding counselling and infant feeding practices, was observed among all women who received peer support compared to those who received the standard antenatal counselling, with more women in the intervention group (20.5%) practising EBF than those in the control group (12.8%) by Week 3. When the women‟s HIV status was considered, more than 65% of HIV positive and 40% of HIV negative women practised MF and EFF (giving formula milk only with no breast milk) throughout the study, respectively, regardless of the group they were in. For women who hadintended to practise EBF at recruitment, 33% in the control group and 20% in the intervention group actually practised EBF by Week 3. Regarding disclosure and feeding choice, 77.4% of women who had disclosed their HIV status actually practised MF versus 8.6% who practised EBF by Week 3.Conclusion: Community peer counselling should be strengthened as the results from this study showed that a high percentage of women who practised EBF were those who had received counselling, irrespective of their HIV status. The high percentage of HIV positive women who practised high risk feeding, despite receiving infant counselling, is of concern. Disclosure of the women‟s HIV status did not translate to them practising low risk infant feeding methods, which may suggest that there are other issues that determine the women‟s choice of infant feeding.</p>

Les contrats de distribution exclusive sont couramment utilisés dans la mise en marché des produits. Des doutes et des critiques ont été, pourtant, soulevés relativement à leur validité au regard du droit de la concurrence. Ces ententes et les pratiques qui en découlent paraissent, à première vue, anticoncurrentielles. Le propos de ce mémoire est d’examiner dans quelle mesure les contrats de distribution exclusive peuvent, en fait, stimuler la concurrence et de montrer, en conséquence, qu’ils devraient être considérés licites eu égard au droit de la concurrence. Nous trouvons, d’une part, que les pratiques exclusives sont suspectes vu qu’elles réduisent la liberté contractuelle du producteur et du distributeur. Cette restriction est susceptible d’entraver la concurrence à cause du pouvoir de marché qu’elle crée et elle peut, de ce fait, engendrer le monopole. La Loi sur la concurrence interdit de tels agissements. Les contrats de distribution exclusive peuvent, d’autre part, favoriser réellement la concurrence. Ils constituent un instrument stratégique utilisé par les entrepreneurs dans leur lutte pour accroître leur part de marché. La distribution exclusive, en portant les acteurs commerciaux à chercher les meilleures stratégies, renforce la concurrence. Celle-ci doit être entendue non seulement comme une constante rivalité entre toutes les entreprises, mais elle doit aussi inclure la coopération entre certaines entreprises en vue de mieux concurrencer d’autres à un niveau plus général. Une juste appréciation de la concurrence dans les contrats de distribution exclusive requiert le recours à l’analyse économique du droit. Cette analyse permet une évaluation de la concurrence basée sur le critère de l’efficience économique. En vue de déterminer si une pratique donnée augmente ou non le bien-être général (sur quoi l’analyse de l’efficience met l’accent), les effets négatifs de cette pratique devraient être mis en balance avec ses effets positifs résultant des gains en efficience. C’est dans ce sens que le droit de la concurrence a évolué tant dans l’Union européenne qu’aux États-Unis et au Canada pour permettre les ententes qui entraînent des gains nets d’efficience. Ce qu’on aurait pu condamner autrefois pour entrave à la concurrence, peut maintenant paraître comme une stratégie commerciale licite et saine. Compte tenu de ce récent développement, notre analyse nous conduit à la conclusion que les accords de distribution exclusive devraient être considérés licites dans la mesure où ils améliorent le bien-être du consommateur. / Exclusive distribution agreements are commonly used in the marketing of products. However, doubts and criticisms have been expressed concerning their validity as regards competition law: these agreements and the resulting practices appear at first blush to be anticompetitive. In this thesis we propose to examine to what extent exclusive distribution agreements can in fact foster competition and hence should be considered lawful as regards competition law. On one hand, we find that exclusive distribution practices are suspect, because the contractual freedom of the producer and of the distributor is restricted. This restriction may hinder interbrand competition due to market power and can potentially create a monopoly. Such actions are not permissible under the Competition Act. On the other hand, some aspects of exclusive distribution arrangements can actually promote competition. They constitute a strategic tool used by suppliers seeking to increase their market shares. This can reinforce competition by encouraging competitors to try out better strategies. Competition must be understood not merely as the constant rivalry amongst all enterprises, but must also encompass cooperation between certain enterprises in order to better compete with others at a more general level. A fair appreciation of competition in exclusive distribution arrangements requires one to have recourse to the economic analysis of law. The economic analysis of law allows one to assess competition based on the criterion of economic efficiency. In order to determine whether or not a particular practice increases the general welfare ( on which efficiency analysis focuses), the negative effects of that practice should be weighed against its positive effects resulting from efficiency gains. In this sense, competition law has evolved, as much in the European Union, as in the United States and Canada, to allow arrangements that lead to net welfare gains. What might have been previously condemned as an obstacle to competition may now appear as a legitimate and healthy commercial strategy. Taking into account this recent development, our analysis leads us to the conclusion that exclusive distribution agreements should be lawful in so far as they improve consumer welfare.