В 1-й главе изучены особенности единичного и мелкосерийного типа производства; изучены основы управления резервами производства, изучены подходы трёх концепций по управлению предприятием к управлению резервами. Во 2-й главе проведен анализ процесса производства продукции цеха №23 ПАО «Завод №9». В 3-й главе предложены мероприятия по мобилизации резервов производства продукции, рассчитана их экономическая эффективность; даны рекомендации по мобилизации резервов. / In the 1st chapter, the features of a single and small-scale type of production were studied; studied the basics of managing reserves of production, studied the approaches of three concepts for managing an enterprise to managing reserves. In the 2nd chapter, an analysis of the production process of workshop No. 23 of PJSC Plant No. 9 was carried out. The 3rd chapter proposes measures to mobilize product production reserves, their economic efficiency is calculated; recommendations for the mobilization of reserves are given.

Diese Dissertation besteht aus drei Essays, welche den monetären Transmissionsmechanismus via das Kreditangebot von Banken in einem Umfeld mit Überschussreserven analysieren. Im ersten Aufsatz wird die Effekten der 2008 Handlungsrahmens Änderungen der Fed auf den Transmissionsmechanismus untersucht. Ich schätze die Reaktionen in der Periode vor 2008 und zeige, dass den Bankkreditkanal aktiv ist. In der Periode nach 2008 steigen Bankkredite nach eine Geldpolitikkontraktion. Ich habe ein Regimewechsel-TANK Modell entwickelt, um den Transmissionsmechanismus über beide Systeme zu vergleichen. Das Modell zeigt, dass nach einem kontraktiven Schock unter dem alten System die Produktion sinkt, und, dass unter einem neuartigen System das Kreditangebot stimuliert. Dies ist aufgrund einer Friktion der Fall, die durch die Liquiditätsmanagementkosten der Banken verursacht wird. Im zweiten Aufsatz analysiere ich ob der Bankkreditkanal in den USA nach der Finanzkrise vorhanden ist. Dieser Kanal stützt sich auf die Annahme verbindlicher Reserveanforderungen. Ich finde Belege für den Kreditvergabekanal vor der Finanzkrise. Seit der Krise ist der Bankkreditkanal nicht mehr vorhanden. Stattdessen ist eine kontraktive Geldpolitik jetzt mit lockereren Liquiditätsbeschränkungen verbunden, und somit mit einem Anstieg der Bankkredite. Im dritten Aufsatz, D. Zander und ich identifizieren heterogene Bankenreaktionen auf geldpolitische Schocks in den USA. Unter Verwendung von einem informationsrobusten Instrument, zeigen wir, dass der Grad der Bargeld-Liquidität systematisch beeinflusst, wie Banken infolge eines geldpolitischen Schocks ihr Kreditvergabeverhalten ändern. Wir finden, dass nach einem kontraktiven Schock hochliquide Banken mit einer Ausweitung der Kreditvergabe reagieren, während weniger liquide Banken eine gedämpfte Antwort zeigen. Wir zeigen, dass das Vernachlässigen von Informationseffekten zu qualitativ unterschiedlichen Ergebnissen für liquide Banken führt. / This dissertation consists of three essays that analyze the monetary transmission mechanism via banks’ credit supply to the real economy under an environment of excess reserves. The first essay, examines the effects of the Fed’s 2008 operational system switch on the transmission mechanism of monetary policy. In the pre-switch sample the bank-lending channel is shown to be active, while in the latter sample, bank loans increase after a monetary contraction. Additionally, a regime-switching TANK model is used to compare the transmission mechanism across both systems. Under the old-style system real activity declines after a monetary contraction, while under a new-style system, monetary tightening stimulates credit supply, due to the presence of a friction introduced by banks’ liquidity management costs. The second essay analyzes whether the bank-lending channel is still present in post financial crisis U.S. data. This channel relies on the key assumption of binding reserve requirements, which is at odds with post-crisis data. Using a two-step regression approach, I find evidence supporting the lending channel in the subsample prior to the crisis. Moreover, since the crisis the lending channel is no longer active. Instead, monetary tightening is associated with looser liquidity constraints, and thus, with bank lending growth. The third essay is joint work with D. Zander. We identify heterogeneous bank reactions to monetary policy shocks in the U.S. using macro-econometric techniques and micro-level data. Using an informationally-robust instrument we show that the degree of cash-liquidity systematically influences banks’ lending behavior. Concretely, after a contractionary shock, liquid banks (those with excess reserves above 1% of assets) react by expanding lending, whereas less liquid banks have a muted response. We show that neglecting to control for the information effects of monetary policy, yield qualitatively different results that are at odds with economic theory.

The frequency of the Nordic power system has been increasingly deviating outside the normal frequency band (50 ± 0.1 Hz) in the past two decades. In an effort to counteract this, the Nordic Transmission System Operators (TSOs) have proposed new and stricter requirements on the units participating in Frequency Containment Reserve (FCR) market. The implication of these new requirements is that all units participating in the FCR markets must be re-evaluated and early predictions state that double regulated (DR) hydropower turbines, such as Kaplan and Bulb types, will have problems meeting these new requirements. To limit the amount of work required to re-evaluate all DR turbines, which might ultimately show that the unit will not pass the requirements, it is highly beneficial for power producing companies to be able to simulate the turbine response accurately enough, without full-scale physical testing, to filter out the possible cases from the impossible ones. This thesis is aimed at finding a hydropower turbine model that could accurately predict the FCR prequalification outcome for a DR hydropower turbine in Simulink from only pre-existing testing and design data. Three hydropower turbine models, one single regulated (SR) and two DR, were tested and validated for FCR Normal operation (FCR-N). The validation was performed by comparing the model results to field test data attained from a full-scale FCR-N test performed on one of Fortum’s DR hydropower units. Furthermore, two of these models were simulated and tested with regard to the FCR Disturbance (FCR-D) requirements but not validated as no such data was available. The results showed that simulating DR turbines with SR models can give inaccurate results as the SR model could not capture the more complex dynamics of the DR turbine accurately enough. The SR model underestimated the active power response drastically while at the same time overestimating the dynamic stability. The DR turbine models managed to capture the dynamics better with the most prominent model, DR Model 2, giving less than 3 % overestimation of the FCR-N capacity and a correctly predicting that the unit would fail the dynamic stability for FCR-N. The thesis results further showed that when modelling DR turbines, the calculation of the net head is vital for accurate model response. Finally, both the SR and DR model agreed that the unit would likely not pass the FCR-D requirements and therefore confirm the early predictions that DR hydropower turbines, such as the one modelled in this thesis, may have problems passing the new FCR prequalification requirements. Ultimately this might impact electrical price or frequency quality negatively. / Frekvenskvaliteten i det nordiska kraftsystemet har stadigt avvikit alltmer från det normala frekvensbandet (50 ± 0,1 Hz) under de två senaste decennierna. I ett försöka att motverka denna trend har de nordiska kraftsystemoperatörerna (TSO) föreslagit nya och striktare krav på aggregat som deltar i frekvensreservsmarknaden (FCR). Dessa nya krav innebär att alla aggregat som redan deltar på FCR-marknaden måste omvärderas och de bedömningar som har gjorts antyder att dubbelreglerade (DR) vattenkraftturbiner, som kaplan- och bulbturbiner, kommer att ha svårt med att uppfylla dessa nya krav. För att begränsa mängden arbete som krävs för att omvärdera alla DR-turbiner, som i slutändan kan visa att aggregatet inte kommer att klara kraven, är det mycket för fördelaktigt för kraftföretag att kunna noggrant simulera turbinresponsen innan de fysiska testerna utförs, för att filtrera bort de omöjliga fallen från de möjliga. Detta examensarbetes syfte var att hitta en turbinmodell som med bra noggrannhet kan förutsäga FCR förkvalificeringsresultatet for en dubbelreglerad vattenkraftturbin, med hjälp av Simulink från endast befintliga driftdata och information om aggregatets konstruktion. Tre turbinmodeller, en enkelreglerade (SR) och två dubbelreglerade, testades och validerades för FCR Normal drift (FCR-N). Valideringen utfördes genom att jämföra modellresultaten med fälttestdata från ett fullskaligt FCR-N-test som utfördes på en av Fortums dubbelreglerade vattenkraftturbiner. Dessutom simulerades även två av dessa modeller och testades med avseende på frekvensreglering vid störd drift (FCR-D) men validerades inte på grund av avsaknad av fälttestdata. Resultaten visade att simulering av dubbelreglerade turbiner med enkelreglerade turbinmodeller kan vara problematisk eftersom enkelreglerade modellen inte kunde fånga dubbelregleringsturbinernas mer komplexa dynamik tillräckligt bra. Enkelreglerade modellerna tydligt underskattade den aktiva effektresponsen samtidigt som de överskattade den dynamiska stabiliteten. De dubbelreglerade turbinmodellerna fångade däremot dynamiken bättre, där den mest framstående modellen, DR model 2, gav mindre än 3 % överskattning av FCR-N-kapaciteten och en korrekt förutsägelse att enheten skulle misslyckas uppfylla den dynamiska stabiliteten för FCR-N. Resultaten visade vidare att beräkningen av nettofallhöjden är avgörande för korrekt modellrespons. Slutligen var både singel- och dubbelreglerade modellerna överens om att aggregatet sannolikt inte skulle klara FCR-D-kraven och bekräftar därmed de tidiga bedömningarna att dubbelreglerade aggregat, som den som modellerades i denna avhandling, kan ha svårt att klara de nya FCR kraven. I slutändan kan det påverka såväl elpris som frekvenskvalitet negativt.

Contexte. La démence est un problème de santé publique important. Toutefois, les stratégies actuelles en matière de santé publique ne tiennent pas compte des approches visant à renforcer les facteurs de protection pour en réduire le fardeau. Cela peut s’expliquer par le fait que le renforcement des facteurs de protection est un domaine de connaissance émergent. Son vocabulaire et ses notions de base sont encore en phase d’exploration et de définition. Parmi les termes et les notions à développer, citons la « santé positive » comme résultat du renforcement des facteurs de protection et les « atouts de santé », en tant que déterminant positif de la santé. Le développement de ces termes en promotion de la santé et leur adaptation pour les études sur la santé du cerveau contribueront à une meilleure compréhension des mécanismes permettant aux aînés de préserver leur santé cognitive, et donc ouvriront les portes à de nouvelles stratégies pour réduire le fardeau associé aux démences. L’objectif. Cette thèse vise à proposer un modèle pour l’étude de la santé cognitive des personnes âgées et à le tester dans une large base de données populationnelle. Pour atteindre cet objectif, nous avons i) dérivé la signification du terme de santé positive en examinant systématiquement la façon dont le concept est défini/utilisé par différents auteurs dans des publications sur la promotion de la santé ; ii) révisé les modèles existants de déterminants « positifs » de la santé (« modèles d’atouts de santé ») et proposer un nouveau modèle d’atouts de santé ; iii) discuté l’utilité du modèle pour la recherche sur la santé cognitive des personnes âgées, et iv) évalué l’apport indépendant des atouts de santé dans la probabilité d’une santé cognitive positive chez les personnes âgées, à l’aide du model développé. Méthodes. Un examen de la portée a été effectué pour atteindre les objectifs 1 et 2 ; une revue narrative a été réalisée pour atteindre les objectifs 3. L’analyse secondaire des données de l’étude de cohorte longitudinale « Survey on Health, Aging, and Retirement in Europe », vagues 5 et 7, a été réalisée pour atteindre l’objectif 4. Dans cette étude, les déterminants positifs avaient un effet indépendant sur la santé cognitive si i) leurs variables étaient statistiquement significatives dans le modèle entièrement ajusté et ii) ces variables améliorent significativement l’ajustement de la qualité du modèle. Résultats. 1) Aucun consensus sur la définition de la santé positive n’a été trouvé dans la littérature. Parmi les définitions proposées, il y a « bien-être », « extrêmement bonne santé », « résilience » et « capacités ». Nous avons proposé de définir la santé positive comme une réserve en capacités, permettant une plus grande résistance face aux agents pathologiques/adversités et un plus grand bien-être en leur absence. 2) Dans la littérature, des déterminants de la santé positive sont regroupés autour de traits individuels ou de caractéristiques environnementales. Nous avons proposé un nouveau cadre pour les atouts de santé. Dans ce cadre, les caractéristiques individuelles, les actions (orientées vers l’autodéveloppement ou le développement communautaire), les environnements (physique and social) et le soutien social (informel et institutionnalisé) sont interconnectés. Chaque composante précédente contribue à la suivante et à une santé positive. 3) L’état actuel des connaissances sur la santé cognitive permet l’opérationnalisation de la définition de la santé positive cognitive ainsi que du modèle des atouts de la santé. 4) Les variables de trois des quatre groupes d’atouts de santé (caractéristiques individuelles, actions et environnements) démontrent une contribution indépendante à la probabilité d’une santé cognitive positive chez les personnes âgées. L’inclusion des atouts de santé améliore significativement la qualité de l’ajustement du modèle : le pseudo-R-carré a augmenté de 0,31 à 0,33 ; l’aire sous la courbe ROC a augmenté de 77,8 % à 79,5 %, p<0,0001. Cela signifie que les atouts de santé expliquent davantage la probabilité de santé cognitive positive. Conclusion. L’étude sur les facteurs renforçant la santé cognitive pourrait aux nouvelles opportunités pour la diminution du fardeau de démence. Une validation plus poussée du modèle est nécessaire. Premièrement, des indicateurs plus spécifiques d’atouts de santé doivent être trouvés. Deuxièmement, les relations entre les groupes d’atouts de santé devraient être clarifiées. / Background. Dementia is a significant public health challenge; however, current strategies on public health hardly consider the potential of reinforcing protective factors to diminish its burden. A possible reason for this is that reinforcing protective factors represent an emerging field of knowledge. Its vocabulary and basic notions are still under development. Among the terms and notions needing further discussion are “positive health” as the outcome of these reinforcing protective factors and “health assets” as positive health determinants. Advances in the development of these terms in health promotion and their further adaptation to the realm of studies on cognitive health will contribute to a better understanding of how older adults maintain it, which, in turn, could open the doors to new strategies aimed at reducing the burden of dementia. Objective. This dissertation proposes a model for studying cognitive health in older adults and testing it in a large populational database. To achieve this objective, i) we derived the meaning of the term positive health by systematically reviewing how the concept is defined/used by different authors of publications in health promotion; ii) we revised existing models of “positive” determinants of health (“health assets models”) and proposed a new model of health assets; iii) discussed the utility of the model for research on cognitive health of older adults, and iv) we assessed the independent input of health assets into the probability of positive cognitive health among older adults, using developed model. Methods. A scoping review was conducted to achieve objectives 1 and 2, and a narrative review was conducted to achieve objective 3. Secondary analyses of the longitudinal cohort data “Survey on Health, Aging, and Retirement in Europe” data, waves 5 and 7, were performed to achieve objective 4. In this study, determinants were considered as having an independent effect on cognitive health if i) their variables were statistically significant in the fully adjusted model and ii) these variables significantly improved the model’s fit quality. Results. 1) No consensus on the definition of positive health was found in the literature. Among proposed definitions, there were “well-being,” “extremely good health,” “resilience,” and “capacities.” We proposed to define positive health as a reserve in capacities, enabling higher resistance in the face of pathologic agents/adversities and increased well-being in their absence. 2) In the literature, the determinants of positive health are grouped around individual traits or environmental characteristics. We proposed a new health assets framework. In it, individual characteristics, actions (directed to self-development or community development), environments (physical and social), and social support (informal and institutionalized) are interconnected. Each component contributes to the others and positive health. 3) The current state of knowledge on cognitive health allows operationalizing the definition of cognitive positive health and the elements of the health assets model. 4) Variables of three out of four groups of health assets (individual characteristics, actions, and environments) had independent relationships with the probability of cognitive health in older adults. Including health assets significantly improves the model’s fit statistics: pseudo-R-square increased from 0.31 to 0.33; area under ROC rose from 77.8% to 79.5%, p <0.0001. It means that positive health assets bring additional information on the probability of positive cognitive health in older adults. Conclusion. Studying health assets could open the doors to strategies to reduce the burden of dementia. Further validation of the model is required. Firstly, more specific indicators of health assets need to be found. Secondly, the relationships between health asset groups should be clarified.

In response to recent decentralization in Ethiopia, we investigated the status of and pressure exerted on Awash National Park (ANP), vis-a- vis Park resources, observed land use and land cover changes, causes of park-related conflicts, use and management role of stakeholders at federal, regional and local level and the impact of policy on sustainable resources conservation through a comparative framework of before (pre-1995) and after decentralization (post-1995). We used a combination of two black and white aerial photographs of 1975 and 1986, a satellite image of 2006, field observation, information from local communities and Geographic Information System (GIS) to generate the land use and land cover profile. We selected a total of 210 respondents by stratified random sampling, and group discussion participants and key informants using the purposive sampling technique. Direct observed participation of stakeholders, household questionnaire, and interview with key informants and focus group discussions were used to collect data. Our results showed a declining scattered bushland by a rate of 20.61km2 per year between 1972 and 1986. On the other hand, Shrub encroachment increased by 32.2 % between 1972 and 1986 and by 10.3 % (77.4 km2) during the entire study period. Grassland was the largest cover type in the area between 1986 and 2006 and expanded by 14.2 % (106.4 km2) between 1972 and 1986. The majority of respondents highlighted that the most important drivers of the observed LULC changes pre-1995 were the combined effects of the land reform policy and changes in Park boundary (size of the Park). Population growth was reported to be the main driving factor for LULC change pre-and post-1995. The continuing existence of the area as a national Park receives unreserved support from most pastoral and agro-pastoral communities. From the data we conclude that overall, decentralization in Ethiopia was not effective in terms of improving the status of Awash National Park. We recommend action should be taken in terms of reducing human and livestock pressure and to prevent and solve interest-based conflicts between stakeholder / Environmental Sciences / Ph. D. (Environmental Sciences)

The migrant labour practice in South Africa played an important role in the country's development and economy. Although it has benefited many native migrant workers by creating job opportunities, it has had adverse effects on the families of migrant workers. The focus of this study is the phenomenon of migrant labouring and its effects on the family. A literature study has shown that migrant labourers, living in overcrowded city hostels, were subjected to exploitation, malnutrition and crime. The empirical study brought to light the many problems experienced by the families back home: Wives were overburdened by dual roles and responsibilities, lack of support and money, children's development was impeded and academic motivations and performance were low. The ultimate aim of this study was to design practical guidelines to help families cope with the effects of an absent father due to the migrant labour practice. / Psychology of Education / M. Ed.(Guidance and Counselling)

Thesis (MA)--Stellenbosch University, 2014 / ENGLISH ABSTRACT: Equatorial Guinea has, since the mid-1990s, been an oil-rich state. With the highest GDP per capita it should be a continental leader in terms of development. Instead, it ranks in one of the worst positions on the United Nations Development Programme’s (UNDP) Human Development Index (HDI). This study employs the theory of neopatrimonialism to explain why such a discrepancy in these development indicators is evident. As a result of examining the post-independence regimes in Equatorial Guinea through the theoretical lens of neo-patrimonialism it is possible to conclude that the country is afflicted by a governance curse, rather than the more narrowly defined ‘resource curse’ that has become the central explanation of the situation in the country since the discovery of oil favoured by the existing literature on the subject. Instead, this study highlights the fact that the neo-patrimonial nature of the regime in Equatorial Guinea has developed steadily over the years since independence was granted by Spain in 1968, and indeed, the seeds of this system were in fact evident during Spanish colonial control. Whilst the existing literature has focused on the role of oil in explaining the dire state that Equatorial Guinea finds itself in, this study argues that there are other central factors that need to be examined. These include: the Spanish colonial legacy that led the way for such a system to take root; the role of the first post-independence president, Macías Nguema (1968-1979) and; the regime of Obiang Nguema (1979- present). By looking at these factors in addition to the role of oil it is possible to conclude that the neo-patrimonial system in place in Equatorial Guinea has much deeper roots than the existing literature acknowledges. It is vital to examine these deeper roots in order to discover an understanding of and effective solution to the current situation. Moreover, through examining the central features and operations of the ‘predatory’ neo-patrimonial regime in Equatorial Guinea, most notably the profligate spending and evident capital flight, it is possible to acknowledge the international nature of the problem: a factor that has heretofore been neglected in the literature. A greater focus on this issue is necessary in order to understand why the regime is sustained and what prospects there can be for future regime change. The outcomes of the study suggest that a ‘predatory’ neo-patrimonial regime is the central explanation for how the political sphere operates in Equatorial Guinea. This means that there can be no distinction made between the central features of the state and the personal property of those that rule it. It is a classic, modern-day example of ‘L’État c’est moi’. As such, the Nguema family have since independence treated the state resources as their own private property to do with as they wish. This means that there has been no attention paid to the development of Equatorial Guinea as it is not in the interests of the ruling elites to do so. Instead, they utilise state resources for their own self-enrichment. Such behaviour accounts for why despite having the highest GDP per capita on the African continent, Equatorial Guinea has such a low rank in the UNDP Human Development Index. It can therefore be concluded that Equatorial Guinea is affected by a governance curse that has decimated the state since independence, rather than the popularised theory of a ‘resource curse’ which has been used in explanations since the discovery of oil in the mid-1990s. iii / AFRIKAANSE OPSOMMING: Ekwatoriaal-Guinee is reeds sedert die middel negentigerjare ’n olieryke staat. Met die hoogste BBP per capita behoort dit die leier op die vasteland te wees wat ontwikkeling betref. Dit beklee egter een van die laagste plekke op die menslike ontwikkelingsindeks (HDI) van die Verenigde Nasies se Ontwikkelingsprogram (UNDP). In hierdie studie is die teorie van neopatrimonialisme gebruik in ’n poging om die teenstrydigheid in hierdie ontwikkelingsaanwysers te verklaar. Op grond van ’n ondersoek van die regimes na onafhanklikheid in Ekwatoriaal- Guinee deur die teoretiese lens van neopatrimonialisme kan die gevolgtrekking gemaak word dat die land onder ’n regeringsvloek gebuk gaan, eerder as die eng gedefinieerde ‘hulpbronvloek’ wat die vernaamste verklaring geword het vir die situasie in die land sedert die ontdekking van olie, soos in die huidige literatuur oor die onderwerp aangevoer word. Hierdie studie beklemtoon hierteenoor die feit dat die neopatrimoniale aard van die regime in Ekwatoriaal-Guinee met verloop van tyd ontwikkel het sedert Spanje die land in 1968 onafhanklik verklaar het. Die sade van hierdie stelsel was inderwaarheid reeds sigbaar tydens Spaanse koloniale beheer. Waar die bestaande literatuur fokus op die rol van olie in die verklaring van die nypende toestand waarin Ekwatoriaal-Guinee verkeer, word in hierdie studie aangevoer dat ander kernfaktore ook ondersoek moet word. Dit sluit in die Spaanse koloniale erfenis wat die weg gebaan het vir die groei van so ’n stelsel; die rol van die eerste president na onafhanklikwording, Macias Nguema (1968–1979); en die regime van Obiang Nguema (1979 – tans). Deur hierdie faktore tesame met die rol van olie in oorweging te bring, kan die gevolgtrekking gemaak word dat die neopatrimoniale stelsel in Ekwatoriaal-Guinee veel dieper wortels het as wat in die bestaande literatuur erken word. Die ondersoek van hierdie dieper wortels is noodsaaklik ten einde begrip van en doeltreffende oplossings vir die huidige situasie te verkry. Deur die ondersoek van die kernfaktore en -bedrywighede van die ‘roofsugtige’ neopatrimoniale regime in Ekwatoriaal-Guinee, vernaamlik die roekelose verkwistinge en sigbare kapitaaluitvloei, is dit moontlik om die internasionale aard van die probleem te identifiseer – ’n faktor wat tot op hede in die literatuur nagelaat is. Groter fokus op hierdie kwessie is nodig ten einde te begryp waarom die regime volgehou word en watter vooruitsigte daar is vir toekomstige regimeverandering. Die uitkomste van hierdie studie doen aan die hand dat ’n ‘roofsugtige’ neopatrimoniale regime inderwaarheid die vernaamste verklaring is vir die werking van die politieke sfeer in Ekwatoriaal-Guinee. Dit beteken dat geen onderskeid getref kan word tussen die kerneienskappe van die staat en die persoonlike eiendom van diegene in bewind nie. Dit is ’n klassieke, hedendaagse voorbeeld van ‘L’Etat c’est moi’. As sodanig hanteer die Nguema-familie sedert onafhanklikwording die staat se hulpbronne as hul eie private eiendom wat hulle na willekeur aanwend. Dit beteken dat geen aandag gegee word aan die ontwikkeling van Ekwatoriaal-Guinee nie, aangesien dit nie in die belange van die heersende elite is om dit te doen nie, en hulle staatshulpbronne vir selfverryking gebruik. Sodanige gedrag verklaar die land se lae posisie op die UNDP se HDI. Die gevolgtrekking kan dus gemaak word dat Ekwatoriaal-Guinee onder ’n staatsvloek ly, wat die staat sedert onafhanklikwording afmaai, eerder as die gewilde teorie van ’n ‘hulpbronvloek’.

Thesis (MScConsEcol (Conservation Ecology and Entomology)--University of Stellenbosch, 2006. / The Constitution of the Republic of South Africa promotes participatory, cooperative governance and environmental conservation. This constitutional directive is enhanced into the National Environmental Management Act and other conservation laws. These legal requirements for active community participation in natural resources management, including benefit sharing are sufficiently captured in the SANParks’ policy and strategy for the management of national parks.

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal.

The development of human societies rests on functioning ecosystems. This thesis builds on integrated theories of linked social-ecological systems and complex adaptive systems to increase the understanding of how to strengthen the capacity of ecosystems to generate services that sustain human well-being. In this work, I analyze such capacity in human-dominated production ecosystems in Tanzania and Madagascar, and how this capacity is related to local management practices. Resilience of social-ecological systems refers to the capacity to buffer change, to re-organize following disruption, and for adaptation and learning. In Papers I and II, qualitative interview methods are used for mapping and analyses of management practices in the agroecosystem of the Mbulu highlands, Northern Tanzania. Practices such as soil and water conservation, maintenance of habitats for pollinators and predators of pests, intercropping, and landscape diversification, act to buffer food production in a variable environment and sustain underlying ecological processes. The practices are embedded in a decentralized but nested system of institutions, such as communal land rights and social networks, that can buffer for localized disturbances such as temporary droughts. Paper II compares these findings with practices in a farming system in Sweden, and suggests that similar mechanisms for dealing with uncertainty and change can exist in spite of different biophysical conditions. In Papers III and IV, interviews are combined with GIS tools and vegetation sampling to study characteristics and dynamics of the dry forests of Androy, southern Madagascar. Paper III reports on a previously underestimated capacity of the dry forest of southern Madagascar to regenerate, showing areas of regeneration roughly equal areas of degenerated forest (18 700 ha). The pattern of forest regeneration, degradation, and stable cover during the period 1986-2000 was related to the enforcement of customary property rights (Paper III). Paper IV reports on a network of locally protected forest patches in Androy that is embedded in a landscape managed for agricultural or livestock production and contributes to the generation of ecosystem services and ecosystem resilience at a landscape scale. Forest protection is secured by local taboos that provide a well-functioning and legitimate sanctioning system related to religious beliefs. In Paper V, two spatial modeling tools are used to assess the generation of two services, crop pollination and seed dispersal, by the protected forest patches in southern Androy. The functioning of these services is dependent on the spatial configuration of protected patches in the fragmented landscape and can be highly vulnerable to even small changes in landscape forest cover. In conclusion, many of the identified practices are found to make ecological sense in the context of complex systems and contribute to the resilience of social-ecological systems. The thesis illustrates that the capacity of human-dominated production ecosystems to sustain a flow of desired ecosystem services is strongly associated with local management practices and the governance system that they are embedded in, and that, contrary to what is often assumed, local management can and does add resilience for desired ecosystem services. These findings have substantial policy implications, as insufficient recognition of the dynamics of social-ecological interactions is likely to lead to failure of schemes for human development and biodiversity conservation.