No description available.

No description available.

No description available.

Dans cet ouvrage, on présente une généralisation des polynômes symétriques de Jack, les superpolynômes de Jack N = 2, et on discute de ses connections avec le modèle Calogero-Moser-Sutherland trigonométrique (tCMS) supersymétrique N = 2. On fait d’abord une brève introduction à la théorie des polynômes symétriques pour ensuite définir le polynôme symétrique de Jack. On le définit de trois façons : combinatoirement, en tant que fonction propre du modèle tCMS et comme le résultat de la symétrisation du polynôme de Jack non symétrique. On introduit ensuite la théorie des superpolynômes symétriques N = 1. Le superpolynôme de Jack est alors défini selon les trois mêmes approches adaptées au superespace. On procède ensuite à la construction des superpolynômes N = 2 et à la construction du modèle tCMS avec deux supersymétries, à la suite de quoi les quantités conservées du modèle sont présentées. Ultimement, on pose une première définition des superpolynômes de Jack N = 2. On montre alors que ceux-ci sont les fonctions propres du modèle tCMS N = 2 et de ses quantités conservées. On obtient auxiliairement une définition combinatoire de ces superpolynômes qui est conjecturée équivalente à la première. / We present a generalization of the symmetric Jack polynomial, the N = 2 symmetric Jack superpolynomial, and discuss its links with the N = 2 supersymmetric extension of the trigonometric Calogero-Moser-Sutherland (tCMS) model. We first briefly review the theory of symmetric polynomials that leads us to three different definitions of the symmetric Jack polynomials: a combinatorial definition, the Jack polynomial as the eigenfunction of the tCMS model and as the result of the symmetrization of the non-symmetric Jack polynomial. We then do a brief introduction to the theory of symmetric superpolynomials. We also define the symmetric Jack superpolynomials using the superextension of the three aforementioned characterizations. After this introduction, we get to the main matter by defining the symmetric N = 2 superpolynomials. This ultimately results in a definition of the N = 2 Jack superpolynomial. We construct a N = 2 superextension of the tCMS model and find its conserved quantities. The N = 2 Jack superpolynomials are found to be the eigenfunctions of this model. As an auxiliary result, we obtain a conjecture regarding a combinatorial definition of these superpolynomials.

No description available.

Competitive advantage for any organisation relies on the output of knowledge workers. The more motivated the knowledge worker the more likely they are to perform. This research explores the links between motivation and performance and creates a better understanding of which motivational factors would fall within the ambit of the psychological contract. The secondary portion of the research was to clarify if different types of knowledge workers performed in response to motivation in the same way. The research was done through in-depth interviews of knowledge workers in the 4 defined clusters. A total of 26 interviews were conducted. A questionnaire using open ended questions was used to guide the interview. The interviews were recorded, and the key themes in the results were captured, transformed and analysed, after which a ranking process was done on the results. The findings were analysed from various perspectives. The research found that there are differences in the groups studied from a number of perspectives, such as; motivation and performance scores, the motivation factors, the factors that act against performance, the organisational and individual duties as would be ‘held’ in the psychological contract. The research found that most of the factors that motivate are in the psychological contract. The findings strongly recommend that management needs to fully understand and manage the unique motivators of each individual knowledge worker in order to obtain maximum performance and hence competitive advantage. / Dissertation (MBA)--University of Pretoria, 2010. / Gordon Institute of Business Science (GIBS) / unrestricted

Proefschrift--Nijmegen--Katholieke universiteit, 1997. / Résumé en anglais. Bibliogr. p. 258-269. Index.

Akademisch Proeschrift--Letteren--Amsterdam, 1966. / Bibliogr. p. 221-233.

Pay-for-performance or performance related pay is a system whereby compensation or rewards is linked to the achievement of targets and goals. The question that is asked: is pay-for-performance aiding in getting employees to perform at their peak? A review was done of literature looking specifically at pay-for-performance and organisations where this has been implemented as well as supporting themes: motivation, job satisfaction, psychological contract, team work and performance appraisal. A survey was conducted among employees in a collections environment in a financial institute in South Africa, where a pay-for-performance scheme was implemented in two departments performing similar functions. Employees in one department received incentive payments and employees in the other did not. A survey was conducted among these employees to measure their attitudes towards pay-for-performance and supporting themes. Difference in the attitudes of the subgroups within the study was also considered. Although both departments agreed that pay-forperformance was a good principle, the department that received the incentive payment more strongly agreed to the pay-for-performance measurements. Some other fascinating observations included general positive attitudes of temporary employees. The role of performance management also delivers some interesting observations. No obvious links could have been made between pay-for-performance and the specified themes. Copyright / Dissertation (MBA)--University of Pretoria, 2010. / Gordon Institute of Business Science (GIBS) / unrestricted

South Africa like many other countries is faced with the problem of infrastructure backlogs and budget constraints. The South African government through the National Treasury recognized the need to co-operate with the private sector in order to address this problem, by establishing the PPP unit. This research examined the role of financiers in facilitating the implementation of PPPs, as well as the factors that blunt the effectiveness of PPPs as infrastructure delivery mechanism in SA. The research was done through conducting semi-structured in-depth interviews with 18 experienced and knowledgeable stakeholders in the Private and Public sectors, who are and have been exposed to PPPs in South Africa. The findings on the success of PPPs as a medium for infrastructure delivery gave credence to the necessity and timeliness of this research. There was a difference of opinion as to the success or otherwise of PPPs between the Public Sector on the one hand and the Private Sector on the other. The major factors which facilitate the successful implementation of PPPs included financial innovation and discipline, technical competency, and supportive legislative framework. The major findings in respect of the inhibiting factors were skills shortage and political commitment Suggestions were made to stakeholders on minimizing the inhibitors. / Dissertation (MBA)--University of Pretoria, 2010. / Gordon Institute of Business Science (GIBS) / unrestricted