The factors affecting the supply of rubber from Sarawak, East Malaysia, were identified and reviewed in an historical framework. A methodical framework for the general analysis of economic relationships between variables was reviewed and a practical application of the methodology to the supply of rubber from Sarawak was carried out. An econometric analysis of the long run factors affecting the production of rubber was carried out. (1) Two log-differenced autoregressive models of the rubber supply were formulated. (2) The models were tested for parameter constancy to identify structural breaks in the time series and for structural invariance to determine whether they were suitable for policy analysis, forecasting and backcasting. (3) The variables were tested for bivariate Granger Causality to determine the relationships between the factors of production and the output of rubber. (4) Forecast Error Variance Decomposition analysis of multivariate Granger Causality was carried out using a Vector Autoregressive Model. The results confirm the a priori economic theory that long run changes in supply have been affected primarily by changes in area under rubber production and long term price trends. The area planted to rubber has depended upon price incentives and the availability of scarce labour resources. Prices have been affected by the supply of rubber from Sarawak but this is posited to be a reflection of global supply trends affecting prices. While the results generally confirm the economic theory, caution is urged when interpreting the results. The severe inadequacies of the data used highlights the need for more accurate time series and the mainly methodological approach of this study.

Area closures have been widely used in the management of migratory fish and conservation of endangered marine species, but very few economic models are available to assess the impacts of a closure because economists have paid little attention to complexities in fishery management, such as spatial heterogeneity in fish stocks and fleet dynamics. This study presents a spatial economic model that features (i) heterogeneously distributed stocks of multiple species, (ii) their movement across areas, (iii) travel costs depending on fishing location, and (iv) optimal allocation of fishing trips to areas and of the primary target in each fishing set. Because catch-per-unit-effort (CPUE) diminishes with effort, trips are alternately allocated to several areas, where the expected crew's wages are equalized. While this optimal allocation of trips derives a demand for labor (DDL), fishermen's tradeoff between offshore days (labor) and onshore days (leisure) yields an upward-sloping labor supply curve, which determines, together with the DDL, the equilibrium level of wage and labor. Using catch and effort data summarized from the federally mandated commercial logbooks into 5° square monthly strata, auction price data, and survey data for longliner's cost structure, this model is applied to the Hawaii longline fishery to conduct policy simulations. While a near-shore area closure leads to fewer trips of longer duration, a closure of the North Pacific to protect sea turtles significantly reduces swordfish catch and significantly increases the catch of near-shore species, which may endanger the stocks of near-shore species or affect the harvests by other boats. The impacts of prohibiting swordfish sets on the industry could be more severe than the above closure for turtle conservation. A revenue tax is not effective in reducing fishing effort. A closure increases fish movement (FM) from the closed area to open, neighboring areas, resulting in higher levels of the stocks in those open areas. This FM effect benefits the fishery industry, and could reduce the fishermen's income loss from a closure--estimated by the model without FM--by half, if fish are mobile and the closed area(s) is a "source" in terms of the direction of movement.

Álgebra Linear e particularmente a teoria das matrizes e dos sistemas lineares são tópicos da Matemática que têm aplicações, não só dentro da própria Matemática, mas também em várias outras áreas do conhecimento humano. Neste trabalho, além de estudar estas teorias, estudamos algumas de suas aplicações na área da Economia, como em modelos lineares de produção, modelos de Markov para emprego e modelos de benefícios obtidos no pagamento de impostos após realizarmos contribuições filantrópicas. / Linear Algebra and particularly matrices and linear systems theory are topics in Mathematics with many applications in several branches of science. In this work we study this theory and some of its applications in Economy as in linear models of production, Markov models of employment and tax benefits of charitable contributions.

This paper examines the phenomenon of economic nationalism within market interactions of different economic models of governance in the European Union. The first section offers a retrospective of economic nationalism interpretations at different periods of time, with a focus on the past century. It also introduces the reader to new forms of economic nationalism, particular for the European integration context and which ultimately represent the subject of this paper. Next the study focuses on the particularities of the European economic model and its relation to state interventionism. It also attempts to identify EU's mandate of action and instruments in this direction, with a special attention to the key economic sectors and dominant forms of interventionism. The last chapter provides a closer look at national regulatory traditions of three economic models: British, German and French and traces approaches to economic nationalism within these distinct models of economic governance.

De la Librairie Hachette à Lagardère, le groupe s’est profondément transformé. Le conglomérat issu de rapprochement d’Hachette avec Matra a abandonné toutes les activités des industries des hautes technologies, du transport et de l’automobile. Ce travail vise à déceler les traces des étapes successives de transformation du groupe pour éclairer les racines de ses choix stratégiques et son positionnement actuel au sein des industries culturelles. Il vise aussi à analyser les conditions de sa financiarisation et de ses mutations technologiques, puis ses stratégies vis-à-vis des industries de la communication. Les activités et les mutations de chacune des quatre branches actuelles du groupe, Lagardère Publishing (livre), Lagardère Active (presse, radio, télévision, production audiovisuelle, numérique et publicité), Lagardère Services (distribution et commerce de détail en zones de transport) et Lagardère Unlimited (gestion de droits sportifs et divertissement) font l’objet d’un examen séparé, analysant leurs spécificités et leurs stratégies, comparées à celles de leurs concurrents respectifs. Ce travail étudie enfin comment les stratégies de Lagardère interrogent les théories des industries culturelles. / The Lagardère group has undergone dramatic changes from the days of the ‘Librairie Hachette’ to those of the Lagardère group. The conglomerate born from the merger* between Hachette and Matra has now given up all its high-tech, transport and automotive activities. This thesis aims at uncovering the evidence of the successive steps in the transformation of the group in order to highlight the roots of its strategic choices and to shed light on its current position among cultural industries. It also aims at analysing the conditions of the financialisation of the group, its technological development and its strategies regarding the communication industries. The activities of and changes undergone by each of the current branches of the group -namely Lagardère Publishing (book publishing), Lagardère Active (press, radio, television, audio-visual production, digital media and advertising), Lagardère Services (distribution and retail networks in transport areas) and Lagardère Unlimited (entertainment and sports rights marketing)- are studied separately here, thus allowing to analyse their specificities and strategies, compared to each of their respective competitors. Finally, this thesis analyses how the various Lagardère strategies question the theories about the cultural industries.

<p dir="ltr">Airport parking revenues become essential in maintaining daily aeronautical and non-aeronautical operations and financing capital expenditures. There exist significant variations between different airports in terms of their parking revenues, and such variations will not be eliminated when airport parking revenue is standardized by passenger volume. Given the limited empirical research on airport parking revenues, this study examines the variation of airport parking revenue per locally originating passenger using random-effects regression on a five-year panel dataset. Our regression results reveal a significant positive relationship between airport economy parking price and airport parking revenue per locally originating passenger. Additionally, we find a significant positive relationship between household vehicle ownership and airport parking revenue per locally originating passenger. However, the number of offsite parking service providers can lead to a significant negative effect on airport parking revenue per locally originating passenger. Based on these findings, airport operators can implement strategic management initiatives tailored to local market conditions, with the goal of optimizing airport parking revenues and improving passenger welfare.</p>

[Truncated abstract] The 1997 Asian Financial Crisis raised serious questions about the nature of East Asia's rise to economic prosperity, once labelled as a 'miracle' by the World Bank. In particular, East Asian governments were criticised for allowing rampant corruption to pervade their economies. At a conceptual level, the overwhelming majority of studies argue that corruption, defined as the misuse of public office for private gain, has impeded growth. Empirically, many studies have shown the detrimental impact of corruption on economic growth but few have analysed the particular effect of corruption on East Asia's economic growth in the years leading up to the 1997 Crisis, a period characterised by superior economic growth rates against the backdrop of corruption. This study seeks to fill that gap. By virtue of its clandestine nature, any study on corruption is subject to measurement limitations and this study is no exception. The only available data on corruption are indices published by a handful of various international organisations. Each of these indices follows a similar format: they are based partly or wholly on surveys of the corporate sector in each of the sample countries, the results of which are converted into corruption scores and used to rank the sample countries. Although there is a general consistency in rankings across the different indices, the survey questions tend to equate corruption with bribery. In one survey which questioned respondents about corruption and bribery in separate questions, the results indicated that the two are not necessarily synonymous at least in the minds of respondents. A brief analysis of the nature of corruption within East Asia reveals why the tendency to equate corruption with bribery can be misleading, and therefore raises doubts about the credibility of the aforementioned corruption indices. Many countries in East Asia are shown to harbour a network of patron-client relationships within a centralised framework. ... When using the available corruption indices as measures of corruption in a corruption-growth model that is applied to cross-sectional data covering 141 countries in 1996, corruption is found to have a significant positive relationship with economic growth for two of the corruption indices. However, no particular significant relationship is found to exist for East Asian countries within the sample. The corruption indices are then combined to produce a single index of corruption which is then used in a corruption-growth model and applied to panel data covering 33 countries over a twenty year period from 1984 to 2003. This time the corruption variable is found to have a significant positive relationship with economic growth for East Asian countries (excluding Singapore) during 1986-1996. Finally, the concept of rent-seeking is examined as an alternative to the typical principal-agent model of corruption used in the literature, based on its strong resonance with the particular nature of corruption in East Asia. A measure of rent-seeking is developed, and using cross-sectional data for 57 countries in 1996 reveals that rent-seeking has a significant positive relationship with economic growth.

Diss. (sammanfattning) Göteborg : Göteborgs universitet, 2008. / Härtill 4 uppsatser.

This thesis presents models that describe the behaviour of electricity demand and ambient temperature. Important features of both variables are described by mathematical components. These models were developed to calculate the value of electricity demand that is not expected to be exceeded more than once in ten years and to generate synthetic sequences that can be used as input data in simulation software. / PhD Doctorate

Thesis (MScEng (Industrial Engineering))--University of Stellenbosch, 2011. / ENGLISH ABSTRACT: Small-scale farmers have the opportunity to gain access to markets through a contract farming arrangement. The key question is whether it is financially feasible for a small-scale farmer to enter into a contract. The objectives of this study were to develop a model that could be used to determine the financial feasibility of small-scale contract broiler farming in an intensive production system, compare three different genotypes namely: Cobb500 males X Hybro G females, Ross 308 males X Potchefstroom Koekoek females (crossbred) and the purebred Potchefstroom Koekoek, and evaluate current smallscale farmers’ broiler production by means of a case study. Financial performance indicators such as the net present value, cash flow and profit and loss statements were used to analyze the feasibility of all the scenarios. The model was built in Microsoft Excel. Five hundred, 1500 and 2500 birds/cycle scale of production were analyzed. Results revealed that based on the capital costs used, a 500 birds/cycle scale of production was uneconomical and that a farmer would have to receive R25.01/kg broiler meat in order to break even. The 1500 scale of production showed much better results. A farmer could break even at R17.51/kg meat. The capital investment cost of the 2500 scale of production was so high that the farmer would have had to sell his broiler meat for R18.54/kg. Performance traits of genotypes were collected through an experiment and data was statistically analyzed using ‘Statistica 9’. Results showed that there were significant differences between the cumulative feed intake, feed conversion ratios and the European production efficiency ratio of the different genotypes. No significant difference was found in the liveability of the genotypes. Data on performance traits was used as input into the model so that the economic feasibility of the genotypes could be compared. Results showed that a purebred Potchefstroom Koekoek genotype was not suitable for an intensive production system and that the crossbreed did not perform as well as the broiler breed, but that it would be worthwhile investigating the performance traits of the cross breed under less optimal conditions or in a free-range system. The lower capital costs necessary for a freerange system, together with the high premium paid for free-range broiler meat, may give admirable results in the economic feasibility of a small-scale broiler farm. / AFRIKAANSE OPSOMMING: Kleinboere het die geleentheid om deur kontrak boerdery toegang tot markte te verkry. Die vraag is egter of dit finansieël haalbaar is vir 'n kleinboer om kontraktueel verbind te word? Die doelwitte van die studie was om: ‘n model te ontwikkel wat gebruik kan word om die finansiële lewensvatbaarheid van' n klein-skaalse braaikuikenboer te bepaal onder 'n intensiewe produksiestelsel; verskillende genotipes naamlik: Cobb500 hane X Hybro G henne, Ross 308 hane X Potchefstroom Koekoek henne (kruising) en die suiwer Potchefstroom Koekoek te evalueer en die die huidige klein-skaal boer se braaikuikenproduksie deur middel van 'n gevallestudie te evalueer. Finansiële prestasie aanwysers soos die netto huidige waarde, kontantvloei, asook wins en verlies state was gebruik om die haalbaarheid van die verskeie gevalle te analiseer. Die model is op Microsoft Excel gebou. ‘n Produksie skaal van 500, 1500 en 2500 kuikens/siklus is ontleed. Resultate het getoon dat, gebaseer op die kapitale koste wat gebruik is, 'n produksie skaal van 500 kuikens/siklus onekonomies is en dat ʼn boer R25.01/kg sal moet ontvang om gelyk te breek. Die produksie skaal van 1500 kuikens/siklus het beter resultate getoon. 'n Boer kan gelyk breek teen R17.51/kg vleis. Die kapitale beleggingskoste van die produksie skaal van 2500 kuikens/siklus was so hoog dat die boer R18.54/kg sou moes ontvang het om gelyk te breek. Prestasie van genotipes is ingesamel deur middel van 'n eksperiment en data is statisties ontleed met behulp van Statistica 9. Resultate het getoon dat daar hoogs beduidende verskille tussen die kumulatiewe voerinname, voeromsetsverhoudings en Europese produksie effektiwiteits verhouding van die verskillende genotipes is. Geen beduidende verskil is gevind in die leefbaarheid van die genotipes nie. Inligting oor die prestasie eienskappe is gebruik as insette tot die model sodat die ekonomiese haalbaarheid van die genotipes vergelyk kon word. Resultate het getoon dat 'n suiwer Potchefstroom Koekoek genotipe nie geskik is vir 'n intensiewe produksie stelsel nie en dat die kruising nie so goed soos die braaikuiken gevaar het nie, maar dat dit die moeite werd sal wees om ondersoek in te stel na die produksie potensiaal van die kruis kuiken in minder optimale toestande, soos ‘n vryloop stelsel. Die laer kapitale koste en die hoë premie wat betaal word vir vryloop braaikuikenvleis mag geloofwaardige resultate op die ekonomiese haalbaarheid van 'n kleinskaalse braaikuikenboer toon.