L’objet de cette thèse est d’étudier dans un contexte de financiarisation des marchés de matières premières, certaines stratégies adoptées par les investisseurs et leurs impacts sur la volatilité et le co-mouvement excessif entre les marchés énergétiques et financiers. Pour ce faire, trois études sont proposées. La première fait appel aux modèles à changement de régime (MS-VAR) appliqués sur un ensemble des produits énergétiques et couvre la période 1992-2017. Les résultats obtenus suggèrent qu’en période de forte volatilité, les agents commerciaux (agents de couverture) jouent un rôle crucial dans la découverte des prix du marché du gaz. Cependant, ces agents de couverture affectent le bon fonctionnement des autres marchés (pétrole, essence, fioul) et amplifient leur volatilité. La deuxième étude traite les modèles GARCH ADCC versus GARCH DCC sur un échantillon de 17 pays et sur la période 1997-2016. Cette étude met en avant l’effet asymétrique des chocs pétroliers sur les corrélations conditionnelles des marchés asiatiques et africains, qui s’expliquent notamment par les activités d’arbitrage et les comportements hétérogènes des investisseurs. La troisième étude porte sur les modèles autorégressifs à retards échelonnés (ARDL) et révèle qu’après la crise financière, et au-delà des fondamentaux macro-économiques et financiers, l’indice de la spéculation excessive explique, aussi bien à long terme qu’à court terme, la corrélation entre le marché pétrolier et les marchés financiers de certains pays. Ceci génère un phénomène de co-mouvement excessif, et donc un effet de financiarisation sur ces marchés. Enfin, nous concluons les éléments suivantes : premièrement, en période de forte volatilité, le marché du gaz constitue une valeur refuge pour les investisseurs financiers ; deuxièmement, le comportement de l’investisseur explique l’effet de co-mouvement excessif entre le marché pétrolier et certains marchés financiers ; troisièmement, ce phénomène de co-mouvement excessif limite les avantages de la diversification internationale des portefeuilles notamment au moment des turbulences financières. / The object of this thesis is to study in a context of financialization of commodity markets, some strategies adopted by investors and their impact on volatility and excess co-movement between energy markets and financial markets. To this end, three studies are proposed. The first study uses the approach VAR with Switching Regime (MS-VAR) applied to energy markets during the period 1992-2017. The results suggest that during high volatility period, commercial agents (hedging agents) play a crucial role in the discovery of gas market prices. However, these agents affect the efficiency of other markets (crude oil, gasoline, heating oil) and amplify their volatilities. The second study employs GARCH ADCC versus GARCH DCC models for a sample of 17 countries and covering the period 1997-2016. This study highlights the asymmetric effect of oil shocks on the conditional correlations of the Asian and African markets, which can be explained in particular by the arbitrage activities and the heterogeneous behavior of investors. The third study focuses on Autoregressive Distributed Lag models (ARDL) and reveals that after the financial crisis, and beyond the macroeconomic and financial fundamentals, the index of excessive speculation, explains in long term as well as in short term, the correlation between oil market and some financial markets. This generates a phenomenon of excess co-movement, and therefore a financializing effect on these markets. Finally, we can conclude that : firstly, during high volatility period, gas market is a safe haven for financial investors ; secondly, the behavior of the investor explains the effect of excess co-movement between the oil market and some financial markets ; thirdly, this phenomenon of excess co-movement limits the benefits of international portfolio diversification especially during financial turbulences.

2006年，中國大陸國務院將天津定位為北方經濟中心，天津的金融發展加速，金融機構家數及存貸款餘額不斷增加。當金融市場完善，有助降低交易成本使資金的融通管道暢通，居民可透過金融市場融通資金來從事更多消費，因此本研究目的為探討金融發展是否也是影響居民消費及恩格爾係數的因素。 本研究以金融深化程度及銀行效率指標兩項金融發展指標，來衡量天津的金融發展程度。實證結果顯示，短期下實質人均儲蓄、都市化程度對居民消費有負向影響；物價指數、實質人均GDP、實質人均可支配年收入與金融深化程度對居民消費有正向影響，銀行效率則對居民消費無影響；而長期下，實質人均儲蓄與都市化程度對消費有負向影響，物價指數、實質人均可支配年收入及銀行效率對消費有正向影響，金融深化程度及實質人均GDP則與居民消費無影響。 在恩格爾係數方面，短期下依賴比、實質人均可支配年收入對居民消費有負向影響；金融深化程度、都市化程度對居民消費有正向影響。長期下金融深化程度對恩格爾係數無影響，但銀行效率卻對恩格爾係數有正向影響。依賴比與實質人均可支配年收入呈負向關係，但金融發展程度與銀行效率對居民消費確實有促進作用。最後本研究建議天津政府除了積極促進消費的同時，也應致力於提高居民實質人均可支配年收入水準及提高銀行資金運用效率。 / In 2006, The State Council in China set Tianjin as the economic center in the northway of China., the financial development in Tianjin has speeded up. The numbers of the financial institutions and the balance of deposit and loan have risen up. When the financial market becomes mature that will reduce the transaction cost and consumers will have more financial accesses and opportunities to finance. Therefore, this paper is aimed to discuss whether the financial development is a factor that influence the consumption and Engel’s coefficient or not. This paper used two financial development indicators to measure the financial development in Tianjin- Financial irrelevant ratio (FIR) ,and bank efficiency. The empirical results shows that real personal savings, and urbanization have negative influence on consumption whereas the price index, real GDP per capita, real personal disposal income and financial irrelevant ratio have positive influence on consumption and banking efficiency has no influence on consumption in the short run. In the long run, however, real personal savings and urbanization have negative influence on consumption but price index, real personal disposal income and banking efficiency have the positive influence on consumption. But financial irrelevant ratio and real GDP per capita have no influence on consumption. In the Engel’s coefficient aspect, dependency ratio and real personal disposal income have negative influence. The Financial irrelevant ratio, urbanization and food price index have positive influence in the short run. In the long run, financial irrelevant ratio has no significant influence on Engel’s coefficient but banking efficiency has positive influence on consumption. Dependency ratio and real personal disposal income have negative influence on consumption. Therefore, this paper finds out that the FIR and the bank efficiency have pushed up the consumption in the short run and long run respectively. This paper recommends that the Tianjin’s government should not only to push up the consumption but also should be dedicated to raise up the personal disposal income and banking efficiency.

Les difficultés rencontrées par la banque centrale du Vietnam dans la dernière décennie, qui se sont traduites par des écarts importants par rapport à l'objectif d'inflation, nourrissent le débat sur l'adéquation subsistante de l'actuelle stratégie de politique monétaire en place dans le pays depuis 1992. Partant de cette idée, cette thèse a pour objectif d'examiner la pertinence du ciblage monétaire quantitatif. De plus, celle-ci recommande quelques aménagements pour améliorer l'efficacité de la politique monétaire. Après un chapitre introductif, le chapitre 2 propose un état des lieux de l'économie du Vietnam. Les deux chapitres suivants enquêtent sur la satisfaction des exigences imposées dans le cadre du ciblage monétaire, à savoir l'existence d'une fonction stable de demande de monnaie à long terme (traitée dans le chapitre 3) et celle d'un pouvoir prédictif significatif sur l'inflation que possède la monnaie (testée dans le chapitre 4). Il s'avère que la fonction de demande de monnaie est stable, et que l'hypothèse selon laquelle l'évolution des agrégats monétaires a un pouvoir prédictif sur l'inflation n'est pas rejetée. Le ciblage monétaire se trouve ainsi toujours approprié pour le pays. Les deux derniers chapitres calculent et suggèrent les indicateurs de politique monétaire à travers des évaluations exhaustives. Il s'agit des mesures de l'inflation structurelle et d'un indice synthétique des conditions financières, qui se révèlent utile pour la prise de décision de la banque centrale. / Difficulties of the central bank of Vietnam during the last decade in controlling price inflation and securing its inflation goals have launched and nurtured a vigorous debate on whether the current monetary policy strategy, in place since 1992 remains always appropriate. lnspired of this idea, this thesis aims to examine the relevance of the quantitative monetary targeting framework. Furthermore, the thesis recommends some arrangement in order to improve monetary policy efficiency. After an introductory chapter, Chapter 2 propose the state of the art of the economy of Vietnam. Two following chapters investigate the conditions that an effective money targeting strategy requires and whether they are fully satisfied in Vietnam. Indeed, the existence of a stable money demand function in the long run is considered in Chapter 3, and a significant predictive power that money should have on inflation is tested in Chapter 4. It is proved that the money demand function is stable and the hypothesis according to which money growth may forecast future inflation cannot be rejected. The monetary targeting is therefore still relevant for Vietnam. The last two chapters compute and suggest various monetary policy indicators by means of exhaustive evaluation exercises. Different core inflation measure and a composite index of financial conditions are introduced, which are justified to be meaningful for the policy making process of the central bank.

This essay examines the relationship between exchange rate volatility, estimated using a GARCH model, and level of trade for Sweden and Finland. The data used was collected from Refinitive Eikon Datastream with monthly observations for the time period January 2005 - December 2022. The obtained results indicate that the volatility of the Swedish Krona and Euro positively increases the level of trade for Sweden respectively Finland according to the ARDL model. However, while examining different time perspectives the conclusions resulted in inconclusiveness for the countries and perspectives. The ARDL bounds test for Sweden corresponded with inconclusive results regarding a possible positive long term relationship between SEKs exchange rate volatility and level of trade. Furthermore, the Granger causality test did not state a short term relationship between the two variables for Sweden nor did it state a reversed relationship. On the other hand, for Finland, the ARDL bounds test and Granger causality test denied both a long term and short term positive relationship between the EURs exchange rate volatility and level of trade for Finland. However, for Finland a reversed Granger causality test was shown indicating that the level of trade has an impact on the volatility of the EURs exchange rate.

This thesis contains three main parts. In the first part, we adapt a model developed for the US economy to the unique Chinese economic and institutional context. The uniqueness is mainly from two perspectives: the dual-channel housing financing system in China and the existence of the shadow banking sector (which differs from the shadow banking in developed economies) in China’s housing market. It would be difficult to obtain a clear picture of the Chinese housing market and macroeconomy without a thorough understanding of these two characteristics. This is due to the crucial role played by shadow banking and other informal finance institutions within the context of China in both the development and purchase of housing, in supporting productive economic activities in general, and that the housing market is in turn intricately connected to the health of the Chinese economy, being a key ‘barometer’. The second part of the research is the quantification of the determinants of the scale of shadow banking in China. The quantification is crucial since policy makers need to be aware of how sensitive shadow banking is to various factors. We develop a theoretical framework to explain the evolution of the scale of shadow banking in China. As part of this research, we investigate whether the real interest rate of household saving deposits, the required reserve ratio and bank loans to business and household are the main factors in explaining the evolution of China’s shadow banking. In the third part of research, we employ a credit risk and macroeconomic stress test to investigate the vulnerability of the commercial banks in China. Our originality here is the integration of both the role of shadow banking and housing market related loans in the commercial banks’ stress test scenarios at the macro level. Since a systematic analysis regarding the effect of changes in the macroeconomy and housing market on the credit risk of commercial banks in China is scarce, we use bank stress tests to analyse the credit risk in terms of the non-performing loans ratio of commercial banks in China; this is in response to changes in the macroeconomic factors and housing market. We address the role of the variation of the scale of shadow banking in China in terms of its contribution to the credit risk because of its uncertainty and close link with the commercial banks. Stress tests often focus on a single bank or financial institution yet we apply the same principles to examine the financial system as a whole in China, which would allow us to quantify the systemic risk in the entire Chinese financial system; and which variables, especially shadow banking contribute to the risks and by how much. This thesis contributes to the understanding of how China’s dual-channel housing finance system and shadow banking affect the evolution of house prices; and also, the main driving factors of the scale of China’s shadow banking and whether the housing market related loans and shadow banking pose risks to commercial banks. Possible research questions raised by the main findings of this thesis will enrich the debate on China’s housing market, shadow banking and regular banks, especially at a time when China is reforming its economic structure.

Thesis (M.Com (Economics)) -- University of Limpopo, 2018 / This study investigates the impact of capital flight and investment on economic growth in South Africa using time series data from 1986 to 2016. It employs the Auto Regressive Distributed Lag (ARDL) bounds testing procedure and the Granger causality test as a method of analysis. The empirical findings reveal that the variables are cointegrated which is an indication of the existence of a long run relationship among them. It was further discovered that capital flight had a negative long run relationship with economic growth while investment showed a positive long run relationship with economic growth. The terms of trade and inflation which were added to the model as control variable were also found to have a significantly positive influence on economic growth. The Granger causality indicated a bidirectional relationship between inflation and economic growth, while the terms of trade is found to have a unidirectional relationship with economic growth and capital investment respectively. The results are in line with the neo-classical growth model and the accelerator theory of investment.

The main purpose of the study is to examine the cointegration relationships among economic growth, foreign direct investment and financial sector development in 4 East Asian countries, namely Korea, Malaysia, the Philippines and Thailand between the years 1971-2008 by autoregressive distributed lag (ARDL) approach. In the existing literature, there is no study examining the causal relationships among economic growth, foreign direct investment and financial sector development by applying ARDL methodology for these East Asian countries. The contribution of this study to the literature, the cointegration relationships are constructed to observe the direct linkage among these variables by ARDL approach. If cointegration relationships exist among these variables, then the effect of each regressor on the dependent variable is also investigated. The results of the study indicate that foreign direct investment and financial sector development could be long run forcing variables of economic growth. Additionally, economic growth and financial sector development could be long run forcing variables of foreign direct investment. However, there is not sufficient evidence that economic growth and foreign direct investment together are long run key determinants of financial sector development in a country as obtained in this study.

This paper examines the effects of the exchange rate on bilateral industry trade in Sweden's trade with the Euro area. This is done by examining whether the J-curve effect exists using quarterly data from 1995 until 2022. Since becoming floating in the 1990s, the Swedish Krona has weakened significantly and recently, the discussion about the weakness of the Swedish Krona has gained renewed attention. Since Sweden is a small and open economy highly dependent on international trade, changes in the exchange rate may have large effects on the Swedish economy. The J-curve effect implies that the trade balance following a depreciation may initially worsen before later improving. The ARDL-approach is employed to obtain both short- and long-run effects of a depreciation on Swedish trade balance. In the 66 industries studied, little support can be found for a J-curve effect in Sweden's trade with the Euro area. Although 27 industries present short-run effects of a depreciation only five lasts until the long-run. Similarly, the results indicate that industries with a lower share of foreign inputs in their exports are affected more favourable than those with a higher share in the short run. No such results are found in the long run.

This thesis employs the Autoregressive Distributed Lag model (ARDL), Toda-Yamamoto causality analysis, and ordinary least square (OLS for robust estimation) techniques to empirically investigate the impact of economic growth and energy consumption on the environment in Nigeria from 1980 to 2020. The results of cointegration demonstrate a long-term link between the model's input variables. The outcome of the first objective of the study shows that trade and economic development in Nigeria worsen the state of the environment. Environmental quality is accelerated by financial development; nevertheless, FDI is proven to be insignificant in predicting environmental quality. The result demonstrates that FDI and energy use both have the potential to significantly speed up the rate of environmental degradation. Nevertheless, trade has a negligible impact on the environment in the country, and financial development slows down environmental deterioration. The study also finds that the combination between energy and economic development improves Nigeria's environmental quality. The outcome of the fourth objective shows that economic expansion and energy consumption have a favorable impact on the environment. Additionally, environmental degradation, energy use, and economic growth are all causally related. Moreover, the outcome of the robust estimation reveals a positive and significant relationship between economic growth and energy consumption in the environment. Therefore, the study suggests economic policies with environmental control measures. This could be through an emphasis on the use of other alternatives of low-emission energy, that will mitigate the level of C02 and enhance energy utilization for a better environment in the nation.

Yes / We provide new evidence that current account balances in Greece, Portugal and Spain have become non-stationary after the adoption of the euro implying that there is no long-run stable relationship between savings and investment contrary to the Feldstein-Horioka puzzle. This can be taken as evidence of unsustainable current account balances and loss of solvency for the underlying economies. Using the ARDL methodology we also report a statistical association between fiscal balances and current account balances which implies that fiscal austerity can help these economies to reduce their current account deficits and restore their competitiveness. Our empirical evidence also suggests a particularly strong significant negative association between domestic investment and current account deficits. The magnitude of this latter effect may have important policy implications concerning the ways in which investment is financed to improve external competitiveness.