Cette thèse a pour objectif la compréhension de plusieurs aspects du caractère rugueux de la volatilité observé de manière universelle sur les actifs financiers. Ceci est fait en six étapes. Dans une première partie, on explique cette propriété à partir des comportements typiques des agents sur le marché. Plus précisément, on construit un modèle de prix microscopique basé sur les processus de Hawkes reproduisant les faits stylisés importants de la microstructure des marchés. En étudiant le comportement du prix à long terme, on montre l’émergence d’une version rugueuse du modèle de Heston (appelé modèle rough Heston) avec effet de levier. En utilisant ce lien original entre les processus de Hawkes et les modèles de Heston, on calcule dans la deuxième partie de cette thèse la fonction caractéristique du log-prix du modèle rough Heston. Cette fonction caractéristique est donnée en terme d’une solution d’une équation de Riccati dans le cas du modèle de Heston classique. On montre la validité d’une formule similaire dans le cas du modèle rough Heston, où l’équation de Riccati est remplacée par sa version fractionnaire. Cette formule nous permet de surmonter les difficultés techniques dues au caractère non markovien du modèle afin de valoriser des produits dérivés. Dans la troisième partie, on aborde la question de la gestion des risques des produits dérivés dans le modèle rough Heston. On présente des stratégies de couverture utilisant comme instruments l’actif sous-jacent et la courbe variance forward. Ceci est fait en spécifiant la structure markovienne infini-dimensionnelle du modèle. Étant capable de valoriser et couvrir les produits dérivés dans le modèle rough Heston, nous confrontons ce modèle à la réalité des marchés financiers dans la quatrième partie. Plus précisément, on montre qu’il reproduit le comportement de la volatilité implicite et historique. On montre également qu’il génère l’effet Zumbach qui est une asymétrie par inversion du temps observée empiriquement sur les données financières. On étudie dans la cinquième partie le comportement limite de la volatilité implicite à la monnaie à faible maturité dans le cadre d’un modèle à volatilité stochastique général (incluant le modèle rough Bergomi), en appliquant un développement de la densité du prix de l’actif. Alors que l’approximation basée sur les processus de Hawkes a permis de traiter plusieurs questions relatives au modèle rough Heston, nous examinons dans la sixième partie une approximation markovienne s’appliquant sur une classe plus générale de modèles à volatilité rugueuse. En utilisant cette approximation dans le cas particulier du modèle rough Heston, on obtient une méthode numérique pour résoudre les équations de Riccati fractionnaires. Enfin, nous terminons cette thèse en étudiant un problème non lié à la littérature sur la volatilité rugueuse. Nous considérons le cas d’une plateforme cherchant le meilleur système de make-take fees pour attirer de la liquidité. En utilisant le cadre principal-agent, on décrit le meilleur contrat à proposer au market maker ainsi que les cotations optimales affichées par ce dernier. Nous montrons également que cette politique conduit à une meilleure liquidité et à une baisse des coûts de transaction pour les investisseurs. / The aim of this thesis is to study various aspects of the rough behavior of the volatility observed universally on financial assets. This is done in six steps. In the first part, we investigate how rough volatility can naturally emerge from typical behav- iors of market participants. To do so, we build a microscopic price model based on Hawkes processes in which we encode the main features of the market microstructure. By studying the asymptotic behavior of the price on the long run, we obtain a rough version of the Heston model exhibiting rough volatility and leverage effect. Using this original link between Hawkes processes and the Heston framework, we compute in the second part of the thesis the characteristic function of the log-price in the rough Heston model. In the classical Heston model, the characteristic function is expressed in terms of a solution of a Riccati equation. We show that rough Heston models enjoy a similar formula, the Riccati equation being replaced by its fractional version. This formula enables us to overcome the non-Markovian nature of the model in order to deal with derivatives pricing. In the third part, we tackle the issue of managing derivatives risks under the rough Heston model. We establish explicit hedging strategies using as instruments the underlying asset and the forward variance curve. This is done by specifying the infinite-dimensional Markovian structure of the rough Heston model. Being able to price and hedge derivatives in the rough Heston model, we challenge the model to practice in the fourth part. More precisely, we show the excellent fit of the model to historical and implied volatilities. We also show that the model reproduces the Zumbach’s effect, that is a time reversal asymmetry which is observed empirically on financial data. While the Hawkes approximation enabled us to solve the pricing and hedging issues under the rough Heston model, this approach cannot be extended to an arbitrary rough volatility model. We study in the fifth part the behavior of the at-the-money implied volatility for small maturity under general stochastic volatility models. In the same spirit as the Hawkes approximation, we look in the sixth part of this thesis for a tractable Markovian approximation that holds for a general class of rough volatility models. By applying this approximation on the specific case of the rough Heston model, we derive a numerical scheme for solving fractional Riccati equations. Finally, we end this thesis by studying a problem unrelated to rough volatility. We consider an exchange looking for the best make-take fees system to attract liquidity in its platform. Using a principal-agent framework, we describe the best contract that the exchange should propose to the market maker and provide the optimal quotes displayed by the latter. We also argue that this policy leads to higher quality of liquidity and lower trading costs for investors.

The diploma thesis is focused on customer satisfaction analysis and proposals to increase its level for Provident Financial s.r.o., which has been offering purposeless cash and non-cash loans in the Czech Republic since 1997. The theoretical part describes the issue of marketing research. The practical part is an analysis of the results of a marketing survey conducted on future and existing customers of Provi-dent Financial s.r.o. On the basis of this information, measures are proposed to in-crease customer satisfaction and bring higher sales to the company.

The thesis focuses on comparison of motor vehicles taxation in selected European Union countries. It compares the tax liability of chosen company in the Czech Republic and other countries. Thesis focus on comparison of vehicles operation fees. Diploma thesis recommends a few suggestions to optimize vehicle fleet in chosen company.

Fruit de la globalisation économique et financière, la rencontre entre l’arbitrage international et la finance était inéluctable. Plusieurs facteurs expliquent ce phénomène : l’accroissement des échanges commerciaux et des investissements transnationaux, le choix des opérateurs du commerce international pour l’arbitrage lorsqu’il s’agit de régler leurs différends malgré le coût élevé des procédures d’arbitrage, enfin les nouvelles approches adoptées par les entreprises transnationales en matière de gouvernance et de gestion du risque. Le financement de procès par un tiers dans l’arbitrage international est protéiforme. Il implique différents acteurs comme les avocats, les assureurs mais ce sont les tiers-financeurs avec le concept du « Third-Party Funding », qui cristallisent notre attention pour cette étude. Le Third-Party Funding offre plusieurs options avec un schéma classique : le financement d’un procès mais aujourd’hui, nous assistons à un schéma beaucoup plus élaboré avec le financement de portefeuilles d’arbitrages « Portfolio Funding » qui a la préférence des tiers-financeurs. Aussi, dans un premier temps, il semblait essentiel d’analyser le financement de procès par un tiers dont le Third-Party Funding pour en comprendre les fondements, les mécanismes. Si le financement Third-Party Funding présente des atouts indéniables pour comme l’accès à la justice, il soulève aussi des problématiques en raison de la spécificité de l’arbitrage. Le tiers-financeur n’étant pas partie à l’arbitrage, sa participation a un réel impact sur la procédure et soulève des questions dont les principales touchent à la constitution du tribunal arbitral et au déroulement de la procédure arbitrale. Dès lors, il s’agit de savoir comment maîtriser cet impact sur la procédure d’arbitrage, comment la sécuriser, la pratique du Third-Party Funding n’étant pas réglementée. Les règles étatiques apportant des réponses laconiques, les règles informelles plus flexibles, sont plus à même à offrir un encadrement adapté à une activité résolument transnationale et globale. Certes, il existe bien une autorégulation des tiers-financeurs avec des codes de conduite mais insuffisante pour répondre aux spécificités de l’arbitrage. Les acteurs de l’arbitrage ont donc un rôle à jouer dans la proposition d’une réglementation tout comme les arbitres qui ont ainsi favorisé le développement d’une jurisprudence arbitrale principalement CIRDI. Les institutions arbitrales devraient s’inspirer des principes de base comme l’éthique et la transparence pour mettre en place de nouvelles règles intégrant le financement Third-Party Funding dans leurs Règlements d’arbitrage (comme l’ont fait le SIAC à Singapour, le Centre d’arbitrage et de médiation de la Chambre de commerce Brésil-Canada (CAM-CCB). Enfin, les règles de compliance viendraient compléter cette réglementation appropriée avec les Autorités de régulation financière. La réglementation est de toute évidence l’enjeu majeur dans les années à venir pour voir un financement Third-Party Funding éthique, transparent, efficient et concourant pleinement à l’efficacité de l’arbitrage international. / Being the result of economic and financial globalization, the meeting between international arbitration and finance was inevitable. Several factors explain this phenomenon: the increase of transnational trade and investment, the choice of international trade operators in favor of arbitration, despite the high cost of arbitration procedures, when they must solve disputes and new approaches adopted by transnational corporations in governance and risk management. Third-party funding in international arbitration proceedings is multifaceted. It involves different stakeholders such as lawyers, insurers but it is the third-party funders, with the concept of “Third-Party Funding”, which will be the focus of our attention for this study. It offers several options with a classic scheme, which is the financing of a trial but nowadays we witness a much more elaborate scheme with the financing of portfolios of arbitration i.e. “Portfolio funding”, which is favored by funders. Therefore, it seemed essential to analyze the funding of trials including the Third-Party Funding to understand the foundations, the mechanisms. While Third-Party Funding has undeniable strengths such as access to justice, it also raises problems because of the specificity of arbitration. Since the third party is not a party to the arbitration, its participation has a real impact on the procedure and raises questions, the main ones being the constitution of the arbitral tribunal and the conduct of the arbitration proceedings.It is therefore a question of knowing how to control this impact on the arbitration proceedings, how to secure it, since the Third-Party Funding practice is not regulated. State rules providing laconic answers, so more flexible informal rules are better able to offer a framework adapted to a resolutely transnational and global activity. There is, of course, a self-regulation of third-party funders with codes of conduct but insufficient to meet the specificities of arbitration. The actors of the arbitral community therefore have a role to play in the proposal of a regulation just like the arbitrators, who have thus favored the development of an arbitration jurisprudence mainly ICSID. Arbitral institutions should use basic principles such as ethics and transparency to implement new rules integrating Third-Party Funding into their Arbitration Rules (as did the SIAC in Singapore, the Center for Arbitration and Mediation of the Chamber of Commerce Brazil-Canada, CAM/CCBC. Finally, the compliance rules would complement this appropriate regulation with the financial regulatory authorities. Regulation is clearly the major issue in the coming years to see ethical, transparent, efficient Third-Party Funding that fully contributes to the effectiveness of international arbitration.

This thesis describes the most commonly committed tax criminal offense i.e., the evasion of taxes, fees, and other mandatory payments pursuant to Section 240 of the Criminal Code. The goal of the thesis is to examine the problematic aspects of this criminal offense and to call attention to the discrepancies in proceedings and judgements, with special attention to substantive and procedural aspect, relevant case law of the domestic courts, and the opinion of professional public. The body of the thesis is divided into five chapters. The first two chapters introduce the substantive basis of the topic, provide a brief overview of the history of tax crimes and, last but not least, underline the importance and relevance of the whole topic using publicly available statistical data. The third chapter is focused on the mutual connection between the criminal offense pursuant to Section 240 of the Criminal Code and two selected criminal offenses. The first being the non-payment of taxes, social security contributions and similar mandatory payments pursuant to Section 241 of the Criminal Code, with a focus on the role of effective regret. Among other things, this outlines the issue following the unprecedented judgment of the Constitutional Court of the Czech Republic concerning the voluntary action of the...

Convinced of the role of education in promoting and accelerating economic and social development, the Government of Kenya devoted the early years of independence to the expansion of the education sector. The Government, however, could not shoulder the whole burden of financing education for long and, therefore, introduced the cost sharing policy in 1988. Demand for education has considerably increased in Kenya, yet, the sources of education finances are experiencing constraints even with the cost sharing strategy. With increased poverty levels, many parents are not able to meet the cost requirements under the cost sharing policy. This study, therefore, intended to investigate the impact of the cost sharing policy in secondary education in Kenya. In particular, the study sought to find out the views of teachers, parents and students on the cost sharing policy, the costs of secondary education, the main participants of the cost sharing policy and the proportion of dropouts and absenteeism attributed to the costs of education. This study established that there was an escalation of school fees at secondary school level as a result of the introduction of cost sharing policy in Kenya as well as in the other countries cited in this study. Most parents viewed cost sharing as a burden because not all of them were able to educate their children beyond the primary school level. The study recommends that the Government should introduce better methods of financing secondary education that would enable poor but bright students to join secondary schools of their choice, establish policies of identifying needy students among others. / Educational Studies / M. Ed. (Education Management)

Titel: Revision i tider av social distansering Inledning: En kris är något som påverkar det normala och bidrar till en avvikelse i en organisation. Coronapandemin har bland annat satt krav på implementering av hemarbete och dess strategier. En revisors roll i företaget är att ge en rättvisande bild av företagets finansiella information. Som revisor behöver man säkerställa att man bibehåller den revisionskvalitet som krävs, även i tider av social distansering. Syfte och frågeställning: Denna studie syftar till att undersöka om, och hur, den sociala distanseringen, till följd av Coronapandemin, har påverkat kvaliteten på revisorns arbete. Hur har revisionskvaliteten påverkats av de krav som ställts på den sociala distanseringen till följd av Coronapandemin?Hur har följande fem punkter påverkats av Coronapandemin? Revisorsarvode Revisorns lön Fortlevnadsprincipen Revisionsförfarande HumankapitalSkiljer sig resultatet åt ifall man arbetar på “Big Four” eller inte?Teori: Studien bygger på den teoretiska studien gjord av Albitar, Gerged, Kikhia och Hussainey (2020), för att nå ytterligare bredd har även annan forskning bidragit till den teoretiska referensramen. Detta för att undersöka Coronapandemins påverkan på de fem ovan nämnda nyckelaspekter i ett senare stadie av Coronapandemin än den tidigare forskningen av Albitar med flera (2020).Metod: Studien antar ett deduktivt synsätt med inslag av induktion för att få en djupare förståelse kring ämnet. Genomförandet är av kvantitativ karaktär och genomförs genom enkäter med respondenter från revisionsbyråer Sverige över.Slutsats: Studiens resultat påvisar en viss påverkan på branschen till följd av Coronapandemin. Bland annat så har bedömningen om fortlevnad försvåras då framtiden är oviss för många av klienterna. Denna studie påvisar även att revisorsarvoden inte har sänkts till följd av Coronapandemin, inte heller revisorers löneutveckling. Vidare har de krav på digitalisering effektiviserat revisorers arbete som fått implementera andra arbetssätt för att samla in de ekonomiska underlag som krävs för revisionen. Det kan inte, i nuläget, påvisas att revisionskvaliteten påverkats av Coronapandemin. Det framforskade resultatet visar att de som arbetar inom "Big Four" är mer motiverade av lön när det handlar om utfört arbete jämfört med de som inte arbetar inom "Big Four". Resterande punkter skiljer sig inte parterna sig mellan.

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Purpose – The aim of this paper is to provide evidence on the extent and the consequences of the provision of non-audit services (NAS) by statutory auditors to German family firms. Design/methodology/approach – The study analyzes hand collected fee data of 368 listed and private family firms in Germany. It employs univariate tests, ordinary least squares and two-stage least squares regressions to investigate potential threats to perceived auditor independence and knowledge spillovers between jointly provided NAS and audit services. Findings – Incumbent auditors are shown to be a significant source of various types of NAS to family firms. There is weak evidence on threats to perceived auditor independence and support for reciprocal knowledge spillovers between the services. While listed and private family firms do not differ in regard to the proportion of NAS fees, comparative findings suggest that key threats and benefits of jointly provided services are more prevalent among private than among listed family firms. Research limitations/implications – The study suffers from limited data availability and is restricted to the initial year of mandatory audit fee disclosure of private firms in Germany. Particularities of family firms and the German setting, as well as differential results for listed and private family firms, suggest fruitful avenues for future research. Practical implications – The study addresses the current issues in audit regulation. Regulatory bodies should consider that key threats and benefits of auditor-provided NAS decrease with stronger exogenous restrictions. Attempts to restrict jointly provided services in the EU suggest family firms to reconsider their reliance on auditors as a trusted source of NAS. Originality/value – This study is the first to provide evidence on the extent and consequences of auditor-provided NAS in family firms based on fee disclosure. It is also among the few studies that investigate private firms in a code law country and complements prior evidence from Germany that is restricted to listed firms. More generally, it contributes to limited evidence at the intersection of audit and family business research.

This research focuses on problems encountered by School Governing Bodies (SGBs) in executing their financial task in four schools situated in the Ramotse Area, Hammanskraal, north-east of the city of Tshwane. The research methodology, which was employed, can be described as qualitative, exploratory and descriptive by nature. Data was collected by means of two focus group interviews, one involving the chairpersons of SGBs and the other involving the managers of the same schools. An analysis of the data has revealed a number of financially related problems, which SGBs in the Ramotse Area experience, amongst other things that parents fail to meet their financial obligations and subsidies tend to arrive late. The most important recommendation made is that SGBs should be trained both better and more frequently. / Educational Studies / M. Ed. (Education Management)