Global ETD Search

81	Bruce Nauman : the true artist is an absurd fountain Trapani, Alex 02 1900 (has links) Link to dataset: https://doi.org/10.25399/UnisaData.14152106.v1 / The work of Bruce Nauman can be understood as an enquiry into the absurd. His work is a critique of art, the artist and society, and is in part viewed as a mediation of stereotypical ‘truth’. The absurd is defined and analysed to elucidate the nature of art and human behaviour by means of literary comparison, in particular of Camus, Sartre and Wittgenstein. This research focusses on Nauman’s subversive performance- based work and analyses how he simulates a particular work of Duchamp. I propose that Nauman espouses human activity into the functionality of objects, such as fountains. My artworks expand on Nauman’s interrogation of the concept of a ‘true artist’ by embodying an absurd fountain as a Sisyphean construct. In contextualising my work in relation to incessant duty, insecurity and double negatives, I offer a regenerative vigour against idolisation of success through contemplation of the artist’s doubt and the absurd. / Art History, Visual Arts and Musicology / M.A. (Visual Arts) Absurd Conceptual art Cyclical Dialetheism Existentialism Fountains Human body Performance Subversion Truth 709.22 Nauman, Bruce, 1941- -- Themes, motives Trapani, Alex -- Themes, motives Trapani, Alex -- Exhibitions Conceptual art -- 21st century Absurd (Philosophy) in art Art, Modern -- 21st century Performance art Existentialism in art Humanism in art Art appreciation
82	Optimizing Engineered Tendon Development via Structural and Chemical Signaling Cues Thomas Lee Jenkins II (16679865) 02 August 2023 (has links) <p>The rotator cuff is a group of four muscles and tendons in the shoulder that function to lift and rotate the arm. Rotator cuff tendon tears are increasingly common: more than 545,000 rotator cuff surgeries occur annually in the US. However, treatment is often complicated by disorganized collagen matrix formed via fibrosis and results in high re-tear rates. Tendon tissue engineering seeks to solve the problem using biomaterials to promote neo-tendon formation to augment repair or regenerate tendon. However, while current biomaterials provide the opportunity to improve tendon healing, they frequently still exhibit fibrosis in preclinical studies. Therefore, a critical need exists to understand the mechanisms of aligned collagen formation when designing biomaterials for tendon tissue engineering. Matrix architecture and transient receptor potential cation channel subfamily V member 4 (TRPV4) regulate aligned collagen formation during tenogenesis in vitro, but the mechanism remains to be determined. Recently, TRPV4 stimulation was found to induce nuclear localization and activation of transcriptional co-activators Yes-associated protein (YAP). YAP expression is upregulated during tendon development, a process characterized by aligned collagen formation, and in response to physiological mechanical stimulation, suggesting it could play an important role in tendon. The objective of this work is to improve tissue engineering strategies and progress toward making a device that regenerate tendon after injury. Aim 1 incorporates tendon-derived matrix into synthetic polymer scaffolds to add biological signaling cues to induce tenogenesis. Aim 2 uses a 2D photolithography system (microphotopatterning) to optimize architectural and structural cues to promote stem cell differentiation toward tenogenic, chondrogenic, and osteogenic lineages. Aim 3 investigates dynamic tensile loading protocols to promote collagen matrix synthesis and improve engineered tendon mechanical function. Aim 4 investigates the role of TRPV4 and YAP in collagen alignment during engineered tendon development.</p> Orthopaedics Biomaterials Mechanobiology Tissue engineering Biomechanics tendon tissue engineering biomaterials metlblowing electrospinning adipose stromal/stem cells (ASCs) Collagen alignment Extracellular matrix (ECM) synthesis carbodiimide cross-linking UV cross-linking viscoelastic properties calculated Tensile loading cyclical loading Transient receptor potential vanilloid 4 yes-associated protein
83	Αριθμητική μελέτη της δυναμικής συμπεριφοράς μοντέλων Kaldor της μακροοικονομίας Μάρκελλος, Παναγιώτης Ιωάννης 22 November 2011 (has links) Τα πρωτότυπα αποτελέσματα της διατριβής περιέχονται στα κεφ. 2, 3 και 4. Στο κεφ. 2 μελετούμε με αριθμητικές μεθόδους ένα 3-διάστατο διακριτό μοντέλο μακροοικονομίας με σταθερές ισοτιμίες. Χρησιμοποιώντας μια μέθοδο πλέγματος, βρίσκουμε την περιοχή ευστάθειας στον παραμετρικό χώρο, προσδιορίζουμε την καμπύλη διακλαδώσεων Hopf-Neimark και θεωρούμε σύντομα την εμφάνιση “γλωσσών” Arnold. Υπολογίζονται διαγράμματα διακλαδώσεων και εκθέτη Lyapunov που δίνουν πληροφορίες για τους επιχειρηματικούς κύκλους και την πολύπλοκη δυναμική του μοντέλου και. παρουσιάζουμε παραδείγματα κυκλικών και χαοτικών ελκυστών. Στο κεφ. 3 μελετούμε με τις ίδιες μεθόδους ένα διακριτό μοντέλο αλληλεπίδρασης περιοχών με σταθερές ισοτιμίες, επέκταση του προηγούμενου μοντέλου σε 5 διαστάσεις. Στόχος ήταν να δείξουμε πόσο εφικτή και αποτελεσματική είναι μία αριθμητική μελέτη για ηπίως πολυδιάστατα διακριτά δυναμικά συστήματα με πολλές παραμέτρους. Βρήκαμε ότι η κίνηση κεφαλαίων δεν αρκεί για τη δημιουργία κύκλων όταν είναι χαμηλή η εμπορική αλληλεπίδραση. Το κατώφλι εμπορίου προβλέπεται περίπου στο 15% των εμπορικών συναλλαγών. Αντίθετα, το μοντέλο δεν προβλέπει αναγκαίο ελάχιστο επίπεδο κίνησης κεφαλαίων για την εμφάνιση των κύκλων. Δίνουμε παραδείγματα διαγραμμάτων διακλάδωσης και εκθέτη Lyapunov που δείχνουν την εμφάνιση κύκλων ή ακολουθίας διπλασιασμού περιόδου, και παραδείγματα της ανάπτυξής τους. Το κεφ. 4 περιέχει σύντομη περιγραφή συμπληρωματικών αποτελεσμάτων στα παραπάνω μοντέλα, και στα αντίστοιχα μοντέλα μεταβλητής ισοτιμίας συναλλάγματος, καθώς και κατευθύνσεις μελλοντικής έρευνας. Στο κεφ. 5 περιγράφονται σύντομα οι υπολογιστικές τεχνικές που χρησιμοποιήσαμε. Η διατριβή δείχνει την αποτελεσματικότητα της αριθμητικής προσέγγισης για πολυδιάστατα διακριτά μοντέλα. / The original results of the dissertation are contained in ch. 2, 3 and 4, and concern mainly the problem of business cycles. In ch. 2 we explore numerically a 3D discrete Kaldorian macrodynamic model of open economy with fixed exchange rates. Using a grid search method we determine the stability region in parameter space, and the Hopf-Neimark bifurcation curve, and discuss briefly the occurrence of Arnold tongues. Bifurcation and Lyapunov exponent diagrams are computed providing information on the business cycles and illustrating the complex dynamics involved. Examples of cycles and chaotic attractors are presented. In ch. 3 we explore a 5D extension of the previous model using the same methods. The aim was to demonstrate the feasibility and effectiveness of the numerical approach for discrete dynamical systems of moderately high dimensionality and several parameters. We found that capital movement is not sufficient to generate interregional business cycles when trade interaction is low. The trade threshold is predicted at about 15% of trade transactions. By contrast, no minimum level of capital mobility exists as a requirement for the emergence of business cycles. Examples of bifurcation and Lyapunov exponent diagrams illustrating the occurrence of cycles or period doubling, and examples of their development, are given. Ch. 4 contains a short description of complementary results on the above models, and on two other models which extend the previous models to the case of flexible exchange rates, as well as some lines of future research. In ch. 5, the computational techniques employed in the present study are briefly described. The dissertation indicates the effectiveness of the numerical approach for high dimensional discrete models. Αριθμητική μελέτη Περιοδικοί ελκυστές Κυκλικοί ελκυστές Χαοτικοί ελκυστές Κατώφλι εμπορίου 339.015 1 Nonlinear economic dynamics Role of nonlinearity Numerical study Fixed exchange rates Flexible exchange rates Periodic attractors Chaotic attractors Cyclical attractors Business cycles Trade thresold
84	Evolution des méthodes de gestion des risques dans les banques sous la réglementation de Bale III : une étude sur les stress tests macro-prudentiels en Europe / Evolution of risk management methods in banks under Basel III regulation : a study on macroprudential stress tests in Europe Dhima, Julien 11 October 2019 (has links) Notre thèse consiste à expliquer, en apportant quelques éléments théoriques, les imperfections des stress tests macro-prudentiels d’EBA/BCE, et de proposer une nouvelle méthodologie de leur application ainsi que deux stress tests spécifiques en complément. Nous montrons que les stress tests macro-prudentiels peuvent être non pertinents lorsque les deux hypothèses fondamentales du modèle de base de Gordy-Vasicek utilisé pour évaluer le capital réglementaire des banques en méthodes internes (IRB) dans le cadre du risque de crédit (portefeuille de crédit asymptotiquement granulaire et présence d’une seule source de risque systématique qui est la conjoncture macro-économique), ne sont pas respectées. Premièrement, ils existent des portefeuilles concentrés pour lesquels les macro-stress tests ne sont pas suffisants pour mesurer les pertes potentielles, voire inefficaces si ces portefeuilles impliquent des contreparties non cycliques. Deuxièmement, le risque systématique peut provenir de plusieurs sources ; le modèle actuel à un facteur empêche la répercussion propre des chocs « macro ».Nous proposons un stress test spécifique de crédit qui permet d’appréhender le risque spécifique de crédit d’un portefeuille concentré, et un stress test spécifique de liquidité qui permet de mesurer l’impact des chocs spécifiques de liquidité sur la solvabilité de la banque. Nous proposons aussi une généralisation multifactorielle de la fonction d’évaluation du capital réglementaire en IRB, qui permet d’appliquer les chocs des macro-stress tests sur chaque portefeuille sectoriel, en stressant de façon claire, précise et transparente les facteurs de risque systématique l’impactant. Cette méthodologie permet une répercussion propre de ces chocs sur la probabilité de défaut conditionnelle des contreparties de ces portefeuilles et donc une meilleure évaluation de la charge en capital de la banque. / Our thesis consists in explaining, by bringing some theoretical elements, the imperfections of EBA / BCE macro-prudential stress tests, and proposing a new methodology of their application as well as two specific stress tests in addition. We show that macro-prudential stress tests may be irrelevant when the two basic assumptions of the Gordy-Vasicek core model used to assess banks regulatory capital in internal methods (IRB) in the context of credit risk (asymptotically granular credit portfolio and presence of a single source of systematic risk which is the macroeconomic conjuncture), are not respected. Firstly, they exist concentrated portfolios for which macro-stress tests are not sufficient to measure potential losses or even ineffective in the case where these portfolios involve non-cyclical counterparties. Secondly, systematic risk can come from several sources; the actual one-factor model doesn’t allow a proper repercussion of the “macro” shocks. We propose a specific credit stress test which makes possible to apprehend the specific credit risk of a concentrated portfolio, as well as a specific liquidity stress test which makes possible to measure the impact of liquidity shocks on the bank’s solvency. We also propose a multifactorial generalization of the regulatory capital valuation model in IRB, which allows applying macro-stress tests shocks on each sectorial portfolio, stressing in a clear, precise and transparent way the systematic risk factors impacting it. This methodology allows a proper impact of these shocks on the conditional probability of default of the counterparties of these portfolios and therefore a better evaluation of the capital charge of the bank. Stress test macro-prudentiel Probabilité de défaut conditionnelle Probabilité de défaut inconditionnelle Charge en capital Portefeuilles concentrés Contreparties non-cycliques Choc spécifique de crédit Modèle multifactoriel Facteurs de risque systématique Choc(s) « macro » Portefeuilles sectoriels Choc(s) spécifique(s) de liquidité Sortie nette de fonds Actifs liquides et illiquides Taux de dépréciation Macroprudential stress testing Conditional probability of default Unconditional probability of default Expected (conditional) credit loss Capital charge Concentrated portfolios Non-cyclical counterparties Specific credit shock Multifactorial model Systematic risk factors “macro” shock(s) Sectorial portfolios Specific liquidity shock(s) Net outflow of funds Liquid assets and illiquid assets Depreciation rate 330
85	Dialogs of Peace in Protection of Life: A Comparative Case Study of a Nonviolence Method by the Indigenous Guards of the Regional Indigenous Council of Cauca in the Post-Peace Accord Context (2016-2021) in Colombia / Diálogos de Paz en Protección de la Vida: Un estudio de caso comparativo del método de la no-violencia de la Guardia Indígena del Consejo Regional Indígena del Cauca en el contexto del post-acuerdo de paz (2016-2021) en Colombia Clase Hagman, Mimmi January 2021 (has links) The Peace Agreement of 2016 between the Colombian government and the Revolutionary Armed Forces of Colombia - People's Army raised hopes after decades of internal armed conflict, but the levels of violence continue to be high in rural areas. Cauca is the department of Colombia where most social leaders and human rights defenders have been killed since 2016. To resist violence, to defend life and the territories, and to uphold rule of law based on the 1991 Colombian Constitution, the Indigenous Guards of the Regional Indigenous Council of Cauca use an integral method of nonviolence in the everyday setting. The aim of this study is to understand the impact of this method, perceived by the local people, as an alternative way to create peace in Colombia with concepts defined by Johan Galtung. With a decolonial research approach, an exemplifying qualitative comparative case study with fieldwork for the data collection has been carried out in Cauca, to give voice to and learn from the local communities. The results show a complex situation of an uneven progress of conflict transformation within the department, with significant economic inequalities. The challenges of cyclical war on a small scale are occurring, as in the case of the Proyecto Nasa in the Municipality of Toribío. At once, the possibilities of using this method to break the cycles of war through the power of asymmetry have occurred by conflict resolutions of dialogs with armed actors, as in the case of the resguardo of Paletará in the Municipality of Puracé Coconuco. It is claimed that by strengthening the institution of the Indigenous Guards, the collective actions of peacekeeping and peacebuilding in the territories can improve the process of conflict transformation by revitalizing the implementation of the 2016 Peace Agreement with its territorial focus and the ethnic chapter. / El Acuerdo Final de Paz de 2016 entre el Gobierno Colombiano y las Fuerzas Armadas Revolucionarias de Colombia - Ejército del Pueblo elevó la esperanza tras décadas del conflicto armado interno, pero los niveles de violencia siguen siendo altos en las zonas rurales. El Cauca es el departamento de Colombia donde la mayoría de los lideres sociales y los defensores de derechos humanos han sido asesinados desde 2016. Para resistir a la violencia, para defender la vida y los territorios, y para mantener el Estado de Derecho basado en la Constitución Política de Colombia de 1991, el Consejo Regional Indígena del Cauca utiliza un método integral de la no-violencia en el entorno cotidiano. El objetivo de este estudio es comprender el impacto de este método, percibida por la población local, como una vía alternativa para crear paz en Colombia con conceptos definidos por Johan Galtung. Con un enfoque de investigación decolonial, un estudio de caso comparativo con trabajo de campo para la recolección de datos ha sido realizado en el Cauca, para dar voz y aprender de las comunidades locales. Los resultados muestran una situación compleja con un progreso irregular de la transformación del conflicto dentro del departamento con disparidades significativas económicas. Los desafíos con una guerra cíclica a una pequeña escala están ocurriendo; como es el caso de Proyecto Nasa en el Municipio de Toribío. A la vez, las posibilidades con el uso de este método para romper con los ciclos de guerra a través del poder asimétrico han ocurrido por la resolución de conflicto con diálogos con actores armados; como en el caso del Resguardo de Paletará en el Municipio de Puracé Coconuco. Se afirma que, por el fortalecimiento de la institución de la Guardia Indígena, las acciones colectivas del mantenimiento de la paz y la consolidación de la paz en los territorios pueden mejorar el proceso de transformación del conflicto, revitalizando la implementación del Acuerdo Final de Paz de 2016 con el enfoque territorial y el capítulo étnico. Colombia Peace Agreement of 2016 Ethnic Chapter Territorial Focus Cauca Department Violence Nonviolence Method Peace Regional Indigenous Council of Cauca Indigenous Guards Kiwe Thegnas Cyclical War Power of Asymmetry Conflict Resolution Conflict Transformation Dialogs Puracé Coconuco Resguardo of Paletará Toribío Proyecto Nasa Colombia Acuerdo Final de Paz de 2016 Capítulo Étnico Enfoque Territorial Departamento del Cauca Violencia Método de la No-violencia Paz Consejo Regional Indígena del Cauca Guardia Indígena Kiwe Thegnas Guerra Cíclica Poder Asimétrico Resolución de Conflicto Transformación del Conflicto Diálogos Puracé Coconuco Resguardo de Paletará Toribío Proyecto Nasa Other Humanities not elsewhere specified Övrig annan humaniora
86	市場風險值管理之應用分析以某金融控股公司為例 / The analysis of Market Risk VaR management ：the case of financial holding company 周士偉, Chou, Jacky Unknown Date (has links) 2008年次貸風暴橫掃全球金融市場，Basel II制度歷經多年的實施，卻無法有效防阻金融風暴的發生。觀察2008已採用內部模型法之主要國際金融機構之年報，亦發現採用蒙地卡羅模擬法之代表銀行『德意志銀行』於該年度竟發生了35次穿透，市場風險管理到底出了什麼問題？這是被極度關心的現象，產官學界也對此現象提出了許多議題。2012年的現在，次貸的風暴尚未遠去，新的歐債危機也正在蔓延，若金融風暴再次來臨，市場風險管理是否能克服次貸風暴後所凸顯的缺失，市場風險管理的價值除被動管理外，是否還可以進階到主動預警，以作為經營決策的重要參考資訊？這些都是國內金融機構需積極面對的急迫的市場風險管理議題。個案金控的市場風險管理機制致力於解決次貸以來所凸顯的市場風險管理議題、提升市場風險衡量的精準度、擴大市場風險管理之應用範圍，並將市場風險管理的價值由被動管理角色進階到主動預警角色，以期作為經營決策的重要參考。經過多年的淬煉，其發展理念與經驗應具相當參考價值，故本論文以個案金融控股公司(以下簡稱個案金控)之實務經驗進行個案研究，除分析個案金控市場風險管理機制的基礎架構外，也將研究重心放在個案金控如何在此基礎架構下，開發多種進階市場風險量化管理功能。本論文除研究個案金控如何完善市場風險值量化機制外，也對各量化功能的實施結果進行分析，以期研究成果可更客觀的作為其他金融控股公司未來發展進階市場風險衡量機制之參考。市場風險風險值經濟價值信託基金操作風險風險因子一般風險值壓力風險值條件風險值增額風險值邊際風險值變異數-共變異數法歷史模擬法蒙地卡羅模擬法隱含波動度厚尾順景氣循環標準法內部模型法市場流動性風險外生性市場流動性風險內生性市場流動性風險流動性調整後風險值壓力測試回溯測試 Market Risk Value at Risk Economic Value Active Management VaR Tracking Error Risk Factor Common VaR Stressed VaR Conditional VaR Incremental VaR Marginal VaR Variance-Covariance Approach Historical Simulation Approach Monte Carlo Simulation Approach Fat Tail Time-Varying Volatility pro-cyclical Standardized Approach Internal Models Approach Implied Volatility Generalized Error Distribution Bernoulli trial test Likelihood ratio test Unconditional Coverage Test Conditional Coverage Test Backward Looking Model Forward Looking Model Forecasting VaR Pearson Correlation Cholesky decomposition Kendall Correlation Copula method Future Volatility Disconnection Market Liquidity Risk Exogenous Market Liquidity Risk Endogenous Market Liquidity Risk Liquidity-adjusted VaR Stress Test Backtesting Net Interest Income Re-pricing Model Maturity Model Duration Model

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