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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.
361

Satisfaction with rehabilitative health care services among German and non-German nationals residing in Germany: a cross-sectional study

Brzoska, Patrick, Sauzet, Odile, Yilmaz-Aslan, Yüce, Widera, Teresia, Razum, Oliver 31 August 2017 (has links) (PDF)
Objectives Rehabilitation following medical conditions is largely offered as in-patient service in Germany. Foreign-national residents use rehabilitative services less often than Germans and attain less favourable treatment outcomes. These differences are independent of demographic, socioeconomic and health characteristics. Satisfaction with different aspects of rehabilitative care presumably affects the effectiveness of rehabilitative services. We compared the degree of satisfaction with different domains of the rehabilitative care process between Germans and non-German nationals residing in Germany. Methods We used data from a cross-sectional rehabilitation patient survey annually conducted by the German Statutory Pension Insurance Scheme. The sample comprises 274 513 individuals undergoing medical rehabilitation in 642 hospitals during the years 2007–2011. Participants rated their satisfaction with different domains of rehabilitation on multi-item scales. We dichotomised each scale to low/moderate and high satisfaction. For each domain, a multilevel adjusted logistic regression analysis was conducted to examine differences in the levels of satisfaction between German and non-German nationals. Average marginal effects (AMEs) and 99.5% CI were computed as effect estimates. AMEs represent differences in the probability for the occurrence of the outcome. Results Turkish nationals had a higher probability for being less satisfied with most aspects of their rehabilitation, with AMEs ranging between 0.05 (99.5% CI 0.00 to 0.09) for ‘satisfaction with psychological care’ and 0.11 (99.5% CI 0.08 to 0.14) for ‘satisfaction with treatments during rehabilitation’. Patients from former Yugoslavia and from Portugal/Spain/Italy/Greece were as satisfied as Germans with most aspects of their rehabilitation. Conclusions Turkish nationals are less satisfied with their rehabilitative care than other population groups. This may be attributable to the diversity of the population in terms of its expectations towards rehabilitation. Rehabilitative care institutions need to provide services that are sensitive to the needs of all clients. Diversity management can contribute to this process.
362

A Full Frequency-Dependent Cable Model for the Calculation of Fast Transients

Hoshmeh, Abdullah, Schmidt, Uwe 31 August 2017 (has links) (PDF)
The calculation of frequency-dependent cable parameters is essential for simulations of transient phenomena in electrical power systems. The simulation of transients is more complicated than the calculation of currents and voltages in the nominal frequency range. The model has to represent the frequency dependency and the wave propagation behavior of cable lines. The introduced model combines an improved subconductor method for the determination of the frequency-dependent parameters and a PI section wave propagation model. The subconductor method considers the skin and proximity effect in all conductors for frequency ranges up to few megahertz. The subconductor method method yields accurate results. The wave propagation part of the cable model is based on a cascaded PI section model. A modal transformation technique has been used for the calculation in the time domain. The frequency-dependent elements of the related modal transformation matrices have been fitted with rational functions. The frequency dependence of cable parameters has been reproduced using a vector fitting algorithm and has been implemented into an resistor-inductor-capacitor network (RLC network) for each PI section. The proposed full model has been validated with measured data.
363

Measuring Cognitive Load in Embodied Learning Settings

Skulmowski, Alexander, Rey, Günter Daniel 02 August 2017 (has links) (PDF)
In recent years, research on embodied cognition has inspired a number of studies on multimedia learning and instructional psychology. However, in contrast to traditional research on education and multimedia learning, studies on embodied learning (i.e., focusing on bodily action and perception in the context of education) in some cases pose new problems for the measurement of cognitive load. This review provides an overview over recent studies on embodied learning in which cognitive load was measured using surveys, behavioral data, or physiological measures. The different methods are assessed in terms of their success in finding differences of cognitive load in embodied learning scenarios. At the same time, we highlight the most important challenges for researchers aiming to include these measures into their study designs. The main issues we identified are: (1) Subjective measures must be appropriately phrased to be useful for embodied learning; (2) recent findings indicate potentials as well as problematic aspects of dual-task measures; (3) the use of physiological measures offers great potential, but may require mobile equipment in the context of embodied scenarios; (4) meta-cognitive measures can be useful extensions of cognitive load measurement for embodied learning.
364

The Impact of naming practices among North American Indians on name authority control

Exner, Frank Kepler 13 May 2005 (has links)
The purpose of this research was to discover the impact of naming practices among North American Indians on name authority control. In order to address all the aspects, the main problem was divided into the following subproblems: 1. What are the naming practices among North American Indians? 2. Are North American Indian names found in the publication environment? 3. Is it necessary to standardize North American Indian names? 4. What are the authority control rules for North American Indian names and are they adequate? 5. How are North American Indian names presented in national authority files? North American Indian names showed three different forms: European, traditional, and mixed. Name sequences and name sets were also identified. If these name sequences and sets are found in the publication environment, provision should be made for the name forms in authority control systems. All of the sample North American Indian name forms (as well as names sets) were found in the identified academic texts, popular books, children’s books, and textbooks. So these forms and sequences had to either fit the current authority control system or the system would have to be modified to meet the new names. The thesis documented how Native American Indian name forms present specific problems of standardization. The necessity of addressing these problems was confirmed. The rules in two of the central authority control reference sources, AACR2R and Names of persons: national usages for entry in catalogues, were examined. Deficiencies were identified with regard to North American Indian names and changes suggested. Presentation of North American Indian names in national bibliographies was a final test to determine the impact of North American Indian names on name authority control. The forms of North American Indian names in the national bibliographies studied varied substantially, which is an indication of the lack of standardization of the names. / Thesis (DPhil (Information Science))--University of Pretoria, 2006. / Information Science / unrestricted
365

A Single Gyroscope Can Be Used to Accurately Determine Peak Eversion Velocity during Locomotion at Different Speeds and in Various Shoes

Mitschke, Christian, Öhmichen, Matthias, Milani, Thomas L. 10 July 2017 (has links) (PDF)
Gyroscopes have been used in previous studies to measure the peak angular velocity of the shoe or foot in the frontal plane (evVel). However, it is not clear whether different test conditions (footwear hardness or locomotion speed) can influence the accuracy of evVel. The purpose of the present study was to compare the accuracy of gyroscopes and electrogoniometers when measuring evVel and the time until evVel (t_evVel) in 12 different conditions using a single axis gyroscope attached to the heel cap. Twenty-four recreational runners were instructed to walk and run on a 15-m indoor track at four locomotion speeds (1.5, 2.5, and 3.5 m/s, and individual running speed) and in three footwear conditions (low to high hardness). The gyroscope data and electrogoniometer data were sampled at a rate of 1000 Hz. Comparisons between both measurement devices showed small mean differences up to 49.8 ± 46.9 deg/s for evVel and up to 5.3 ± 3.5 ms for t_evVel. Furthermore, strong relationships between gyroscope and electrogoniometer data were found for evVel as well as for t_evVel for all conditions. It can be concluded that gyroscopes can be used to accurately determine evVel and t_evVel under a variety of conditions.
366

Tvorba aplikace o regulaci využívání rádiového spektra ve vazbě na otevřená data ČTÚ / Creation of the application about regulation of radio spectrum in connection to open data of the Czech Telecommunication Office

Hubík, Petr January 2014 (has links)
The aim of this master thesis is description of creating application designated to improve orienta-tion in radio spectrum usage in the Czech Republic and publication of data used by application as open data. First, the thesis describes open data, its importance and method of working with it. This part is followed by an analysis of issues, analysis of available data and selection of methodology for appli-cation development as well as for open data publication. Description of the process of application development and its launch follows. Whole thesis concludes description of the process for open data publication.
367

Evaluation thérapeutique en médecine bucco-dentaire : comparaison entre essais randomisés split-mouth et en bras parallèles / Therapeutic evaluation in oral-health medicine : comparison between split-mouth and parallel-arm randomized controlled trials

Smail-Faugeron, Violaine 24 June 2015 (has links)
Les essais randomisés split-mouth, sont fréquents en médecine buccodentaire. Cependant, certains auteurs ont suggéré que les effets traitement estimés différaient de ceux fournis par les essais en bras parallèles. Par ailleurs, l'enregistrement prospectif des essais est actuellement la meilleure solution pour lutter contre le biais de publication. Premièrement, nous avons comparé les effets traitement estimés entre essais split-mouth et en bras parallèles par une étude méta-épidémiologique. Nous n'avons pas mis en évidence de différence statistiquement significative dans l'estimation de l'effet traitement entre essais randomisés split-mouth et en bras parallèles à question clinique identique. Ces résultats suggèrent que les auteurs de revues systématiques devraient exploiter toutes les preuves disponibles, et qu'en particulier les essais randomisés split-mouth devraient être inclus dans les méta-analyses avec une analyse appropriée.Deuxièmement, nous avons évalué l'enregistrement prospectif sur des registres publics des essais randomisés split-mouth et en bras parallèles publiés en 2013 dans un échantillon de revues de médecine bucco-dentaire. Sur un échantillon de 317 essais randomisés, nous avons montré que seuls 23% des essais étaient enregistrés. Parmi les essais enregistrés, 91% étaient enregistrés rétrospectivement. Nous n'avons pas mis en évidence de différence statistiquement significative entre essais split-mouth et essais en bras parallèles.En conclusion, nous avons proposé des recommandations relatives à l'intégration des essais randomisés split-mouth au sein de la recherche, tant du point de vue du chercheur que de celui des éditeurs de revue médicale. / Split-mouth RCTs are common in oral health medicine. However, some authors have suggested that intervention effect estimates from split-mouth and parallel-arm RCTs may differ. Besides, prospective registration of RCTs is currently the best solution to reporting bias. First, we performed a meta-epidemiological study to compare intervention effect estimates between split-mouth RCTs and parallel-arm RCTs. There was no sufficient evidence for a difference in intervention effect estimates derived from split-mouth and parallel-arm RCTs investigating the same clinical question. Our results support the use of all available evidence in systematic reviews, including that from split-mouth and parallel-arm RCTs, and authors should consider including split-mouth RCTs in their meta-analyses with suitable and appropriate statistical analysis. Second, we assessed how many split-mouth and parallel-arm RCTs with results published in 2013 in a sample of oral health journals had been prospectively registered in trial registries. Of 317 identified RCTs, we showed that only 23% of RCTs were registered. Among those, 91% were registered retrospectively. We did not find any statistically significant difference between split-mouth and parallel-arm RCTs. In conclusion, we have proposed recommendations regarding the integration of splitmouth RCTs in research, from the point of view of researchers and of medical journal editors.
368

Current Aspects in the Pathophysiology and Treatment of Chronic Wounds in Diabetes Mellitus

Tsourdi, Elena, Barthel, Andreas, Rietzsch, Hannes, Reichel, Andreas, Bornstein, Stefan R. 28 November 2013 (has links)
Impaired wound healing is a frequent and very severe problem in patients with diabetes mellitus, yet little is known about the underlying pathomechanisms. In this paper we review the biology of wound healing with particular attention to the pathophysiology of chronic wounds in diabetic patients. The standard treatment of diabetic ulcers includes measures to optimize glycemic control as well as extensive debridement, infection elimination by antibiotic therapy based on wound pathogen cultures, the use of moisture dressings, and offloading high pressure from the wound bed. In this paper we discuss novel adjuvant therapies with particular reference to the use of autologous skin transplants for the treatment of diabetic foot ulcers which do not respond to standard care.
369

Early Events in Foamy Virus - Host Interaction and Intracellular Trafficking

Berka, Ursula, Hamann, Martin Volker, Lindemann, Dirk 28 November 2013 (has links)
Here we review viral and cellular requirements for entry and intracellular trafficking of foamy viruses (FVs) resulting in integration of viral sequences into the host cell genome. The virus encoded glycoprotein harbors all essential viral determinants, which are involved in absorption to the host membrane and triggering the uptake of virus particles. However, only recently light was shed on some details of FV’s interaction with its host cell receptor(s). Latest studies indicate glycosaminoglycans of cellular proteoglycans, particularly heparan sulfate, to be of utmost importance. In a species-specific manner FVs encounter endogenous machineries of the target cell, which are in some cases exploited for fusion and further egress into the cytosol. Mostly triggered by pH-dependent endocytosis, viral and cellular membranes fuse and release naked FV capsids into the cytoplasm. Intact FV capsids are then shuttled along microtubules and are found to accumulate nearby the centrosome where they can remain in a latent state for extended time periods. Depending on the host cell cycle status, FV capsids finally disassemble and, by still poorly characterized mechanisms, the preintegration complex gets access to the host cell chromatin. Host cell mitosis finally allows for viral genome integration, ultimately starting a new round of viral replication.
370

Representation of water abstraction from a karst conduit with numerical discrete-continuum models

Reimann, Thomas, Giese, Markus, Geyer, Tobias, Liedl, Rudolf, Maréchal, Jean-Christophe, Shoemaker, W. Barcley 28 November 2013 (has links)
Karst aquifers are characterized by highly conductive conduit flow paths embedded in a less conductive fissured and fractured matrix resulting in strong permeability contrasts with structured heterogeneity and anisotropy. Groundwater storage occurs predominantly in the fissured matrix. Hence, most karst models assume quasi steady-state flow in conduits neglecting conduit associated drainable storage (CADS). The concept of CADS considers storage volumes, where karst water is not part of the active flow system but rather hydraulically connected to conduits (for example karstic voids and large fractures). The disregard of conduit storage can be inappropriate when direct water abstraction from karst conduits occurs, e.g. large scale pumping. In such cases, CADS may be relevant. Furthermore, the typical fixed head boundary condition at the karst outlet can be inadequate for water abstraction scenarios because unhampered water inflow is possible. The objective of this paper is to analyze the significance of CADS and flow-limited boundary conditions on the hydraulic behavior of karst aquifers in water abstraction scenarios. To this end, the numerical hybrid model MODFLOW-2005 Conduit Flow Process Mode 1 (CFPM1) is enhanced to account for CADS. Additionally, a fixed-head limited-flow (FHLQ) boundary condition is added that limits inflow from constant head boundaries to a user-defined threshold. The affect and proper functioning of these modifications is demonstrated by simplified model studies. Both enhancements, CAD storage and the FHLQ boundary, are shown to be useful for water abstraction scenarios within karst aquifers. An idealized representation of a large-scale pumping test in a karst conduit is used to demonstrate that the enhanced CFPM1 is potentially able to adequately represent water abstraction processes in both the conduits and the matrix of real karst systems.

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