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The Global ETD Search service is a free service for researchers
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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.
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Showing 261 to 270 of 1634 (0.044 seconds)Spelling suggestions: "subject:"Tu dresden"" "subject:"Tu dresdens""
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Lehrberichte der Fakultäten zum Studienjahr ... / Technische Universität Dresden19 December 2013 (has links) (PDF)
No description available.
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HAEC News11 February 2014 (has links) (PDF)
No description available.
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| 263 |
Lehrberichte der Fakultäten zum Studienjahr ... / Technische Universität Dresden19 December 2013 (has links)
No description available.
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| 264 |
MEMENTA—‘Mental healthcare provision for adults with intellectual disability and a mental disorder’. A cross-sectional epidemiological multisite study assessing prevalence of psychiatric symptomatology, needs for care and quality of healthcare provision for adults with intellectual disability in Germany: a study protocolKoch, Andrea, Vogel, Anke, Holzmann, Marco, Pfennig, Andrea, Salize, Hans Joachim, Puschner, Bernd, Schützwohl, Matthias 21 July 2014 (has links) (PDF)
Introduction: The study ‘Mental healthcare provision for adults with intellectual disability and a mental disorder’ (MEMENTA) is a cross-sectional epidemiological study carried out in three different regions of Germany. Its main aim is to assess the prevalence of mental disorders in adults with intellectual disability (ID) as well as quality of mental healthcare for this population. Methods and analysis: The target population are persons aged between 18 and 65 years with a mild or moderate ID. The study population will be recruited through service providers. A representative sample is realised by two-stage sampling. First, institutions providing services for people with ID (sheltered workshops) are selected in a stratified cluster sampling, with strata being (1) types of service-providing non-governmental organisations and (2) sizes of their sheltered workshops. Then persons working in selected sheltered workshops are selected by simple random sampling. An estimated number of 600 adults with ID will be included. Information will be obtained from the group leaders in the sheltered workshops, informal carers or staff members in sheltered housing institutions and the person with ID. Besides the main outcome parameter of psychiatric symptomatology and problem behaviour, other outcome parameters such as needs for care, quality of life, caregiver burden, health services utilisation and costs for care are assessed using well-established standardised instruments. If a comorbid mental disorder is diagnosed, quality of mental healthcare will be assessed with open questions to all interview partners and, in addition, problem-focused interviews with a small subgroup. Analyses will be carried out using quantitative and qualitative methods. Ethics and dissemination: Approval of all three local ethics committees was obtained. Research findings will add much needed empirical information in order to improve services provided to this vulnerable group of patients.
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Size Separation Techniques for the Characterisation of Cross-Linked Casein: A Review of Methods and Their ApplicationsRaak, Norbert, Abbate, Raffaele Andrea, Lederer, Albena, Rohm, Harald, Jaros, Doris 11 June 2018 (has links) (PDF)
Casein is the major protein fraction in milk, and its cross-linking has been a topic of scientific interest for many years. Enzymatic cross-linking has huge potential to modify relevant techno-functional properties of casein, whereas non-enzymatic cross-linking occurs naturally during the storage and processing of milk and dairy products. Two size separation techniques were applied for characterisation of these reactions: gel electrophoresis and size exclusion chromatography. This review summarises their separation principles and discusses the outcome of studies on cross-linked casein from the last ~20 years. Both methods, however, show limitations concerning separation range and are applied mainly under denaturing and reducing conditions. In contrast, field flow fractionation has a broad separation range and can be easily applied under native conditions. Although this method has become a powerful tool in polymer and nanoparticle analysis and was used in few studies on casein micelles, it has not yet been applied to investigate cross-linked casein. Finally, the principles and requirements for absolute molar mass determination are reviewed, which will be of increased interest in the future since suitable calibration substances for casein polymers are scarce.
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Neural mechanisms underlying successful and deficient multi-component behavior in early adolescent ADHDBluschke, Annet, Gohil, Krutika, Petzold, Maxi, Roessner, Veit, Beste, Christian 11 June 2018 (has links) (PDF)
Attention Deficit Hyperactivity Disorder (ADHD) is a disorder affecting cognitive control. These functions are important to achieve goals when different actions need to be executed in close succession. This type of multi-component behavior, which often further requires the processing of information from different modalities, is important for everyday activities. Yet, possible changes in neurophysiological mechanisms have not been investigated in adolescent ADHD. We examined N = 31 adolescent ADHD patients and N = 35 healthy controls (HC) in two Stop-Change experiments using either uni-modal or bi-modal stimuli to trigger stop and change processes. These stimuli were either presented together (SCD0) or in close succession of 300 milliseconds (SCD300). Using event-related potentials (ERP), EEG data decomposition and source localization we analyzed neural processes and functional neuroanatomical correlates of multicomponent behavior. Compared to HCs, ADHD patients had longer reaction times and higher error rates when Stop and Change stimuli were presented in close succession (SCD300), but not when presented together (SCD0). This effect was evident in the uni-modal and bi-modal experiment and is reflected by neurophysiological processes reflecting response selection mechanisms in the inferior parietal cortex (BA40). These processes were only detectable after accounting for intra-individual variability in neurophysiological data; i.e. there were no effects in standard ERPs. Multi-component behavior is not always deficient in ADHD. Rather, modulations in multi-component behavior depend on a critical temporal integration window during response selection which is associated with functioning of the inferior parietal cortex. This window is smaller than in HCs and independent of the complexity of sensory input.
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| 267 |
Camera-based photoplethysmography in an intraoperative settingTrumpp, Alexander, Lohr, Johannes, Wedekind, Daniel, Schmidt, Martin, Burghardt, Matthias, Heller, Axel R., Malberg, Hagen, Zaunseder, Sebastian 11 June 2018 (has links) (PDF)
Background
Camera-based photoplethysmography (cbPPG) is a measurement technique which enables remote vital sign monitoring by using cameras. To obtain valid plethysmograms, proper regions of interest (ROIs) have to be selected in the video data. Most automated selection methods rely on specific spatial or temporal features limiting a broader application. In this work, we present a new method which overcomes those drawbacks and, therefore, allows cbPPG to be applied in an intraoperative environment.
Methods
We recorded 41 patients during surgery using an RGB and a near-infrared (NIR) camera. A Bayesian skin classifier was employed to detect suitable regions, and a level set segmentation approach to define and track ROIs based on spatial homogeneity.
Results
The results show stable and homogeneously illuminated ROIs. We further evaluated their quality with regards to extracted cbPPG signals. The green channel provided the best results where heart rates could be correctly estimated in 95.6% of cases. The NIR channel yielded the highest contribution in compensating false estimations.
Conclusions
The proposed method proved that cbPPG is applicable in intraoperative environments. It can be easily transferred to other settings regardless of which body site is considered.
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| 268 |
A Case Study of the Forced Invariance Approach for Soil Salinity Estimation in Vegetation-Covered Terrain Using Airborne Hyperspectral ImageryLiu, Lanfa, Ji, Min, Buchroithner, Manfred 11 June 2018 (has links) (PDF)
Soil spectroscopy is a promising technique for soil analysis, and has been successfully utilized in the laboratory. When it comes to space, the presence of vegetation significantly affects the performance of imaging spectroscopy or hyperspectral imaging on the retrieval of topsoil properties. The Forced Invariance Approach has been proven able to effectively suppress the vegetation contribution to the mixed image pixel. It takes advantage of scene statistics and requires no specific a priori knowledge of the referenced spectra. However, the approach is still mainly limited to lithological mapping. In this case study, the objective was to test the performance of the Forced Invariance Approach to improve the estimation accuracy of soil salinity for an agricultural area located in the semi-arid region of Northwest China using airborne hyperspectral data. The ground truth data was obtained from an eco-hydrological wireless sensing network. The relationship between Normalized Difference Vegetation Index (NDVI) and soil salinity is discussed. The results demonstrate that the Forced Invariance Approach is able to improve the retrieval accuracy of soil salinity at a depth of 10 cm, as indicated by a higher value for the coefficient of determination (R2). Consequently, the vegetation suppression method has the potential to improve quantitative estimation of soil properties with multivariate statistical methods.
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| 269 |
"Summer Shift": A Potential Effect of Sunshine on the Time Onset of ST‐Elevation Acute Myocardial InfarctionCannistraci, Carlo Vittorio, Nieminen, Tuomo, Nishi, Masahiro, Khachigian, Levon M., Viikilä, Juho, Laine, Mika, Cianflone, Domenico, Maseri, Attilio, Yeo, Khung Keong, Bhindi, Ravinay, Ammirati, Enrico 11 June 2018 (has links) (PDF)
Background: ST-elevation acute myocardial infarction (STEMI) represents one of the leading causes of death. The time of STEMI onset has a circadian rhythm with a peak during diurnal hours, and the occurrence of STEMI follows a seasonal pattern with a salient peak of cases in the winter months and a marked reduction of cases in the summer months. Scholars investigated the reason behind the winter peak, suggesting that environmental and climatic factors concur in STEMI pathogenesis, but no studies have investigated whether the circadian rhythm is modified with the seasonal pattern, in particular during the summer reduction in STEMI occurrence.
Methods and Results: Here, we provide a multiethnic and multination epidemiological study (from both hemispheres at different latitudes, n=2270 cases) that investigates whether the circadian variation of STEMI onset is altered in the summer season. The main finding is that the difference between numbers of diurnal (6:00 to 18:00) and nocturnal (18:00 to 6:00) STEMI is markedly decreased in the summer season, and this is a prodrome of a complex mechanism according to which the circadian rhythm of STEMI time onset seems season dependent.
Conclusions: The “summer shift” of STEMI to the nocturnal interval is consistent across different populations, and the sunshine duration (a measure related to cloudiness and solar irradiance) underpins this season-dependent circadian perturbation. Vitamin D, which in our results seems correlated with this summer shift, is also primarily regulated by the sunshine duration, and future studies should investigate their joint role in the mechanisms of STEMI etiogenesis.
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| 270 |
The Barriers for Voluntary Environmental Management Systems—The Case of EMAS in HospitalsSeifert, Christin 11 June 2018 (has links) (PDF)
The adoption of formal environmental management systems (EMS) according to EMAS (Eco-Management and Audit Scheme) represents a voluntary approach that aims to increase corporate environmental performance. Though EMAS can offer several advantages for organizations, registration numbers are falling. In the hospital sector, the dissemination of EMAS is low. The question arises as to what hinders hospitals when planning, implementing, and maintaining such voluntary environmental management initiatives. The results from interviews with environmental managers in EMAS registered hospitals reveal problems such as high initial effort for creation of the required documents, or lacking knowledge and staff awareness. The barriers are presented in a model synthesizing the problems chronologically on the organizational, group, and individual level. The challenges for the adoption of EMAS as a voluntary environmental management approach in hospitals are discussed. This paper contributes by creating an understanding of the barriers organizations might face when implementing an EMS. Thus, measures to actively manage and overcome barriers can be developed by organizations, consultants, reviewers, policy makers, and researchers.
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