3 resultados para classification aided by clustering
em ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha
Resumo:
Es werden Krankheitserleben und Behandlungsvoraussetzungen als Prädiktoren für den Erfolg stationärer Psychosomatischer Therapie anhand der vorliegenden Studie, die 125 Patienten einschliesst, überprüft. Dies geschieht mit Hilfe der Achse I der Operationalisierten Psychodynamischen Diagnostik (OPD).Die OPD wurde von der Arbeitsgruppe-OPD 1996 in Ergänzung zu der ICD-10 (International Classification of Diseases) herausgegeben und bietet für die Psyche betreffende Erkrankungen zusätzlich zu den rein deskriptiven Klassifikationen der ICD eine Klassifikationsmöglichkeit auf der Basis der Psychoanalyse und Psychodynamik an. Die erste der insgesamt fünf Achsen der OPD bezieht sich dabei auf das Krankheitserleben und die Behandlungsvoraussetzungen des Patienten.Der Erfolg der Therapie wird bis 1 Jahr nach dem Ende der Therapie zu drei verschiedenen Zeitpunkten durch Befragungen der Patienten erfasst. Die Ergebnisse zeigen für einzelne der Items der Achse I der OPD deutliche Zusammenhänge mit dem später eingetretenen Erfolg der Therapie. Dies gilt insbesondere für den Schweregrad des psychischen Befundes, den Leidensdruck, die Beeinträchtigung des Selbsterlebens, die Motivation zur Psychotherapie und die psychische Symptomdarbietung (Items 2, 3, 4, 11 und 15).Des weiteren werden zwei Faktorenlösungen erstellt, welche die 19 einzelnen Items der Achse I der OPD zu Faktoren zusammenfassen. Im Vergleich mit den bereits vorhandenen Faktorenlösungen zeigen sich aufgrund der Uneinheitlichkeit Probleme für eine mögliche Verwendung in der Praxis.
Resumo:
The Pelagonian Zone and the Vardar Zone in Greece represent the western part of the Hellenide hinterland (Internal Hellenides). While the Pelagonian Zone comprises predominantly crystalline basement and sedimentary cover rocks, the Vardar Zone has long been regarded as an ophiolite-decorated suture zone separating the Pelagonian Zone from the Serbo-Macedonian Massif to the east. Felsic basement rocks from both areas, with the main focus put on the Pelagonian Zone, were dated in order to identify the major crust-forming episodes and to improve the understanding of the evolutionary history of the region. The interpretation of the single-zircon geochronology results was aided by geochemical investigations. The majority of the basement rocks from the Pelagonian Zone yielded Permo-Carboniferous intrusion ages around 300 Ma, underlining the importance of this crust-forming event for the Internal Hellenides of Greece. Geochemically these basement rocks are classified as subduction-related granitoids, which formed in an active continental margin setting. An important result was the identification of a Precambrian crustal unit within the crystalline basement of the Pelagonian Zone. Orthogneisses from the NW Pelagonian Zone yielded Neoproterozoic ages of c. 700 Ma and are so far the oldest known rocks in Greece. These basement rocks, which are also similar to active margin granitoids, were interpreted as remnants of a terrane, the Florina Terrane, which can be correlated to a Pan-African or Cadomian arc. Since the gneisses contain inherited zircons of Middle to Late Proterozoic ages, the original location of the Florina Terrane was probably at the northwestern margin of Gondwana. In the Vardar Zone an important phase of Upper Jurassic felsic magmatism is documented by igneous formation ages ranging from 155 to 164 Ma. The chemical and isotopic composition of these rocks is also in accord with their formation in a volcanic-arc setting at an active continental margin. Older continental material incorporated in the Vardar Zone is documented by 319-Ma-old gneisses and by inherited zircons of mainly Middle Palaeozoic ages. The prevalence of subduction-related igneous rocks indicates that arc formation and accretion orogeny were the most important processes during the evolution of this part of the Internal Hellenides. The geochronological results demonstrate that most of the Pelagonian Zone and the Vardar Zone crystalline basement formed during distinct pre-Alpine episodes at c. 700, 300 and 160 Ma with a predominance of the Permo-Carboniferous magmatic phase.
Resumo:
Over the last three decades, sensors based on the phenomenon of surface plasmon resonance have proven particularly suitable for real time thin film characterization, gas detection, biomolecular interaction examination and to supplement electrochemical methods. Systems based on prism coupling have been combined with fluorescence detection under the name of surface plasmon fluorescence spectroscopy to increase sensitivity even further. Alternatively, metal gratings can be employed to match photons for plasmon resonance. The real time monitoring of binding reactions not yet been reported in the combination of fluorescence detection and grating coupling. Grating-based systems promise more competitive products, because of reduced operating costs, and offer benefits for device engineering. This thesis is comprised of a comprehensive study of the suitability of grating coupling for fluorescence based analyte detection. Fundamental properties of grating coupled surface plasmon fluorescence spectroscopy are described, as well as issues related to the commercial realization of the method. Several new experimental techniques are introduced and demonstrated in order to optimize performance in certain areas and improve upon capabilities in respect to prism-based systems. Holographically fabricated gratings are characterized by atomic force microscopy and optical methods, aided by simulations and profile parameters responsible for efficient coupling are analyzed. The directional emission of fluorophores immobilized on a grating surface is studied in detail, including the magnitude and geometry of the fluorescence emission pattern for different grating constants and polarizations. Additionally, the separation between the minimum of the reflected intensity and the maximum fluorescence excitation position is examined. One of the key requirements for the commercial feasibility of grating coupling is the cheap and faithful mass production of disposable samples from a given master grating. The replication of gratings is demonstrated by a simple hot embossing method with good reproducibility to address this matter. The in-situ fluorescence detection of analyte immobilization and affinity measurements using grating coupling are described for the first time. The physical factors related to the sensitivity of the technique are assessed and the lower limit of detection of the technique is determined for an exemplary assay. Particular attention is paid to the contribution of bulk fluorophores to the total signal in terms of magnitude and polarization of incident and emitted light. Emission from the bulk can be a limiting factor for experiments with certain assay formats. For that reason, a novel optical method, based on the modulation of both polarization and intensity of the incident beam, is introduced and demonstrated to be capable of eliminating this contribution.