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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Fundus-controlled perimetry (microperimetry): Application as outcome measure in clinical trials

Pfau, M., Jolly, J.K., Wu, Z., Denniss, Jonathan, Lad, E.M., Guymer, R.H., Fleckenstein, M., Holz, F.G., Schmitz-Valckenberg, S. 11 October 2021 (has links)
Yes / Fundus-controlled perimetry (FCP, also called 'microperimetry') allows for spatially-resolved mapping of visual sensitivity and measurement of fixation stability, both in clinical practice as well as research. The accurate spatial characterization of visual function enabled by FCP can provide insightful information about disease severity and progression not reflected by best-corrected visual acuity in a large range of disorders. This is especially important for monitoring of retinal diseases that initially spare the central retina in earlier disease stages. Improved intra- and inter-session retest-variability through fundus-tracking and precise point-wise follow-up examinations even in patients with unstable fixation represent key advantages of these technique. The design of disease-specific test patterns and protocols reduces the burden of extensive and time-consuming FCP testing, permitting a more meaningful and focused application. Recent developments also allow for photoreceptor-specific testing through implementation of dark-adapted chromatic and photopic testing. A detailed understanding of the variety of available devices and test settings is a key prerequisite for the design and optimization of FCP protocols in future natural history studies and clinical trials. Accordingly, this review describes the theoretical and technical background of FCP, its prior application in clinical and research settings, data that qualify the application of FCP as an outcome measure in clinical trials as well as ongoing and future developments.
2

Carotenoid Excited State Processes by Femtosecond Time-Resolved Pump-Probe and Multi-Pulse Spectroscopies

WEST, Robert G. January 2018 (has links)
This Ph.D. thesis is an exploration of carotenoids by ultrafast, time-resolved absorption spectroscopy to investigate their complicated relaxation processes, means of energy transfer, and dependence on structure. The introduction begins with an overview of carotenoids, intended for the reader to appreciate their importance and their complexity as revealed by decades of research in carotenoid photophysics. To understand the primary concerns of this research field, the reader is guided through basic theory of energetic processes, the experimental method, and methods of analysis. The main body of the text is the Research Chapter, containing four sections, each describing research using varied ultrafast transient absorption spectroscopies on carotenoids in solution and when bound to a host protein. Section 2.1 concerns an equilibration phenomenon in the lowest excited state of the carotenoid fucoxanthin in various solutions and temperatures by a multi-pulse transient absorption method. The same method is applied to fucoxanthin in a host antennae protein of the pennate diatom Phaeodactylum tricornutum to investigate the function of the equilibration in energy transfer to Chlorophyll a in Section 2.2. The next two sections regard the effect of carotenoid structure on its relaxation dynamics. Section 2.3 investigates the effect of the non-conjugated acyloxy group of two fucoxanthin derivatives in various solvents. Here, one of the energetic states involved in the equilibrium mentioned above is seen drastically affected. Lastly, Section 2.4 investigates alloxanthin, a carotenoid with an unusual pair of carbon-carbon triple bonds. Their effect on the conjugation is evaluated based upon the molecules' decay dynamics. A general summary and conclusion is provided at the end.
3

Les fonds communs de placement islamiques en droit libanais / Islamic mutual funds in lebanese law

Hajjar, Mohyedine 15 December 2016 (has links)
La tentative d'introduction de la finance islamique en droit civil nécessite une démarche analytique comparative entre droit musulman et droit civil. La gestion islamique introduit des contrats inconnus en droit civil : la mudâraba et la wakala. Ces contrats de représentation s'opposent au régime général des FCP en marquant une divergence remarquable avec le régime du mandat en droit civil. L'admission de ces contrats nécessite un aménagement du régime des FCP reposant sur la création d'un comité de représentation des souscripteurs. La qualification du fonds en copropriété par le législateur libanais et français plaît bien à la doctrine islamique. L'analyse du régime de propriété et de copropriété prouve l'absence de divergences fondamentales entre le droit civil et le droit musulman. Cependant, le régime des fonds s'approche de la nature du patrimoine d’affectation d'après la doctrine civiliste. Cette qualification est inadmissible en droit musulman adoptant une théorie personnelle du patrimoine. Notre conceptualisation du régime d'une notion juridique de droit musulman dite de Jiha assure l'admission du patrimoine d'affectation et de la personnalité morale en droit musulman. La gestion islamique renforce la gouvernance du fonds et impose des obligations supplémentaires au gestionnaire. Elle nécessite la présence des organes spécialisés dans le contrôle de la conformité de la gestion au droit musulman, ce qui dégage une structure propre au FCPls inexistante dans la pratique. La gestion islamique aboutit à un « filtrage » des titres financiers. Une première analyse juridique du filtrage islamique élabore ainsi les fondements juridiques de ce filtrage. / Any attempt to introduce lslamic finance in civil law requires an analytical approach comparing Islamic law and civil law. Islamic management services rely on types of contracts, which do not exist in civil law: namely the mudâraba and the wakâla. These agency agreements differ from the general scheme of mutual funds as the exhibit a marked difference with the civil Iaw mandate contract. In order to allow these contracts, the current regime of mutual fonds must be amended by creating a representation committee of subscribers. Classification of the mutual funds by the Lebanese and French legislators as joint ownership sound well to Islamic doctrine. Even a detailed analysis of the ownership and joint ownership regimes proves there is no fundamental difference between civil Jaw and Islamic law in this matter. However, the fund’s ownership regime is close to what is called "special-purpose assets" in the civil law doctrine. This classification is unacceptable in Islamic law, which has a persona! theory of patrimony. Our conceptualization of the regime of a legal concept of Islamic law called Jiha make it possible to acknowledge the notions of special purpose assets and legal personality in Islamic law. Islamic management services put strong requirements on the governance of the funds and additional duties for the agent. Islamic management services require the presence of specialized entities monitoring compliance of management to Islamic law: such specific entity does not exist in practice. Islamic management services then leads to a "screening" of securities. Le1rnl analysis of Islamic screening el a borates the legal basis of this screening.
4

Trusts exprès privés anglo-américains, fidéicommis latino-américains et la fiducie française / Anglo-american express private trusts, latin-american fideicomiso and french fiducia

Sanchez de Lozada, Louis 26 September 2012 (has links)
Les trusts anglo-américains (anglais, américain et des Iles Cook) coexistent avec les trusts de droit civil (les fidéicommis argentin, bolivien, panaméen et la fiducie française). Ils appartiennent aux deux familles de droit de Common Law et romano-germanique et ont des structures différentes. Les trusts exprès anglo-américains sont créés par acte unilatéral du constituant et mettent en place une relation trustee-bénéficiaire. Les trusts de droit civil sont créés par contrat (ou testament) entre le constituant et le fiduciaire et ne donnent pas des droits réels aux bénéficiaires. Malgré leur différence de structure, les deux trusts fonctionnent de manière équivalente, grâce au transfert de propriété au fiduciaire et à l’étanchéité du patrimoine fiduciaire. Les réserves héréditaires sont un élément extérieur à la structure des trusts testamentaires ; ceux-ci fonctionnent de manière analogue. Les techniques d’investissement et de gestion fiduciaire sont aussi similaires : des clauses conditionnelles d’accès ou fin de la propriété fiduciaire et des pouvoirs discrétionnaires donnés au trustee sont communs aux deux modèles de trust. La séparation du patrimoine sert à mettre en place des trusts de gestion, de protection ou de garantie de financement de projet, de défaisance ou de titrisation. Le fonctionnement du FCP, similaire à celui des Unit Trusts, devrait donner la propriété fiduciaire des actifs au dépositaire. Des éléments de la loi, extérieurs à la structure de la fiducie, qui n’existent pas chez ses homologues latino et anglo-américains, empêchent son fonctionnement normal. Nous proposons de modifier la loi sur la fiducie, sur les FCP et les fonds de titrisation / Anglo-American express private trusts, Latin-American fideicomiso and French fiducia”. Common Law trusts (English, American and Cook Islands) co-exist with civil law domestic trusts (Argentinean, Bolivian and Panamanian fideicomiso and French fiducia). They belong to the Common Law and continental law families respectively and have different structures. Anglo-American express trusts are settled by a settlor (declaration, gift) or by a will that creates an equitable relationship between the trustee and the cestui, whereby both share legal and equitable interests on the trust property. Civil law trusts are settled by a contract between the settlor and the trustee and by a will. Thus, a civil law trust beneficiary has only personal remedies against a trustee in respect of breach of trust. Despite the structural differences, both types of trusts operate in similar ways, due to the transfer of property to the trustee and the separation of the trust property. Testamentary trusts also work in a similar way; forced heirship is an external element of both. Trust managing and investment techniques and practices are also similar: condition precedent and condition subsequent clauses and discretionary trusts and powers are common to both trust models. Separation of the trust property allows for the settlement of protective trusts, trusts for project financing, defeasance and securitization. French Mutual Funds are comparable to Unit Trusts. Both should give legal title to the trustee (custodian). External elements of French law, which do not exist in Anglo or Latin American trusts, restrain the normal operation and use of French fiducia. We propose to modify the fiducia, mutual and securitization funds law.
5

非線性時間數列模糊轉捩區間之確認 / Fuzzy change period identification for the nonlinear time series

李玉如, Lee, Alice Unknown Date (has links)
對於一個具有結構性改變性質的非線性時間數列,通常很難判斷何處為轉 捩點,或者何處為所謂的轉型期。雖然長久以來已有不少偵查轉捩點的方 法被提出,但是對於轉捩區間以及對於一些語言性的時間數列資料問題( 例如:景氣指標的紅綠燈時間數列),都很少被提出來。本論文中,我們 首先引用Zadeh於1965年提出來的模糊理論的觀念來介紹糢糊時間數列( FTS)。進而定義出在□水準下的模糊點(FP)和模糊轉捩區間(FCP), 並且證明了一些有用的性質。最後再以台灣地區出生率資料為例,說明□ 水準的模糊轉捩區間的判定方法,並列出了詳細的執行步驟。實驗結果更 證明出我們的模糊檢驗法非常具有實用性及有效性。 / As far as structural change of a non-linear time series is concerned, it is hard to tell when the change point or the fuzzy change period occurs. Though many methods are used for the task of detecting, most of them primarily deal with the case of change point, and few examine the problem of fuzzy change period and linguistic time series ( for example, the index of prosperity represented by red or green light ). In this article, we adopt the theory of fuzzy which is proposed by Zedeh ( 1965 ) to introduce the concept of fuzzy time series ( FTS ). Furthermore, we define the □level of fuzzy point (FP) as well as fuzzy change period (FCP), and prove some useful properties. Finally we explain the method we proposed in detecting the □level of fuzzy change period in terms of the data of Taiwan birth rate and provide step-by-step procedures. Experimental results show that the proposed method of fuzzy detecting is available and practical in detecting the □level of fuzzy change period.

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