A5058165100- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advanced SAR Imaging Techniques
- 3D Modeling in Geospatial Applications
- Soil Moisture and Remote Sensing
- Cryospheric studies and observations
- Spacecraft Design and Technology
- Geophysics and Gravity Measurements
- Space Satellite Systems and Control
- Technology, Environment, Urban Planning
- Planetary Science and Exploration
- German Security and Defense Policies
- Integrated Energy Systems Optimization
- Power Systems and Technologies
- Geological and Geochemical Analysis
- Smart Grid and Power Systems
- Spacecraft and Cryogenic Technologies
- Geographic Information Systems Studies
- Arctic and Antarctic ice dynamics
- Geophysical Methods and Applications
- Methane Hydrates and Related Phenomena
- Astro and Planetary Science
- GNSS positioning and interference
- Obsessive-Compulsive Spectrum Disorders
- Spacecraft Dynamics and Control
- Behavioral and Psychological Studies
Charité - Universitätsmedizin Berlin
2021-2025
Freie Universität Berlin
2018-2025
Humboldt-Universität zu Berlin
2018-2025
Zimmer Biomet (Germany)
2023-2025
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2010-2023
Friedrich Schiller University Jena
2023
Jena University Hospital
2023
University of Toronto
2022
Queen's University
2019
Universitätsbibliothek Johann Christian Senckenberg
2018
The primary objective of the TanDEM-X mission is generation a global, consistent, and high-resolution digital elevation model (DEM) with unprecedented global accuracy. goal achieved by exploiting interferometric capabilities two twin SAR satellites TerraSAR-X TanDEM-X, which fly in close orbit formation, acting as an X-band single-pass interferometer. Between December 2010 early 2015 all land surfaces have been acquired at least twice, difficult terrain up to seven or eight times....
TanDEM-X and TerraSAR-X platforms form together the first spaceborne single-pass polarimetric interferometer in space. This allows, for time, acquisition of synthetic aperture radar interferometry (Pol-InSAR) data without disturbing effect temporal decorrelation. paper aims to assess potential such forest applications. For this, single- dual-pol acquired over a boreal, temperate, tropical site were investigated characterize X-band penetration polarization diversity interferometric coherence...
EnMAP (Environmental Mapping and Analysis Program) is a high-resolution imaging spectroscopy remote sensing mission that was successfully launched on April 1st, 2022. Equipped with prism-based dual-spectrometer, performs observations in the spectral range between 418.2nm 2445.5nm 224 bands high radiometric accuracy stability. products, ground instantaneous field-of-view of 30m×30m at swath width 30km, allow for qualitative quantitative analysis surface variables from frequently consistently...
In this paper we present the activities performed at Microwaves and Radar Institute of German Aerospace Center (DLR) to derive global forest/non-forest classification mosaics from interferometric synthetic aperture radar (InSAR) data acquired by TanDEM-X mission. The have been collected between 2011 2016 in bistatic stripmap single polarization (HH) mode, with main goal generating a consistent, timely, highly accurate 3D representation terrain's surface (digital elevation model, DEM). set...
Background CT-guided high-dose-rate (HDR) brachytherapy (hereafter, HDR brachytherapy) has been shown to be safe and effective for patients with unresectable hepatocellular carcinoma (HCC), but studies comparing this therapy other local-regional therapies are scarce. Purpose To compare patient outcomes of transarterial chemoembolization (TACE) in HCC. Materials Methods This multi-institutional retrospective study included consecutive treatment-naive adult HCC who underwent either or TACE...
TanDEM-X (TerraSAR-X Add-on for Digital Elevation Measurements) is a high-resolution interferometric mission with the main goal of providing global and unprecedentedly accurate digital elevation model Earth surface by means single-pass X-band synthetic aperture radar (SAR) interferometry. Despite its usual quasi-monostatic configuration, first genuinely bistatic SAR system in space. During monostatic commissioning phase, has been mainly operated pursuit mode. However, some pioneering...
While the benefits of ascorbic acid (vitamin C, ascorbate) as an essential nutrient are well established, its effects on tumor cells and in treatment controversial. In particular, conflicting data exist whether ascorbate may increase cytotoxic antineoplastic drugs or rather exert adverse drug sensitivity during cancer treatment. Findings further obscured regarding distinction between dehydroascorbate (DHA). Thus, purpose this study was to evaluate directly compare efficacy compared DHA,...
Exposure and response prevention is effective recommended as the first choice for treating obsessive-compulsive disorders (OCD). Its mechanisms of action are rarely studied, but two major theories make distinct assumptions: while emotional processing theory assumes that treatment effects associated with habituation within between exposure sessions, inhibitory learning approach highlights acquisition additional associations, implying alternative like expectancy violation. The present study...
Introduction Interpersonal problems are a transdiagnostic risk factor for the development and maintenance of various psychiatric disorders, including anxiety depression. Interventions that address these interpersonal challenges could therefore play crucial role in enhancing mental health. This study aims to evaluate efficacy feasibility group intervention, Kiesler Circle Training (KCT), improving skills. Methods analysis In prospective randomised controlled trial (RCT), 156 outpatients with...
Introduction Long-term health consequences after mild COVID-19 are not well described. Our aim was to estimate their prevalence and describe the time course of signs symptoms for a period up 24 months SARS-CoV-2 infection. Methods We conducted cohort study matched age, sex, test week among individuals who had attended public center at Charité—Universitätsmedizin Berlin, Germany. In early 2022, 576 former patients (>95% non-hospitalized) 302 uninfected responded questionnaire on...
Abstract In the treatment of chronic wounds, it is necessary to establish a physiological wound milieu improve healing. Application collagen as dressing has been described beneficial possesses ability reduce elevated levels proteases, cytokines, and free radicals. Consequently, wide range dressings based on have developed. Native susceptible alterations because influences during production process; minimize effects molecule itself are usually aseptically produced. Common sterilization...
TerraSAR-X add-on for digital elevation measurement (TanDEM-X) is a space-borne X-band SAR mission designed to derive model (DEM) of the Earth's land surface with an unprecedented relative vertical accuracy 2 m at 12 posting. To achieve this goal, two satellites fly in close controlled formation opportunity adjust flexible along- and across-track baselines. A combination multiple acquisitions different baseline lengths required allow stable phase unwrapping high height accuracy. This paper...
TanDEM-X is a high-resolution interferometric radar mission with the main goal of providing global digital elevation model (DEM) Earth surface by means single-pass X-band SAR interferometry. It is, moreover, first genuinely bistatic spaceborne mission, and, independently its usual quasi-monostatic configuration, includes many peculiarities SAR. An experimental, versatile, and flexible chain has been developed at DLR Microwaves Radar Institute for scientific exploitation data acquired in...
Increasing individual subjective well-being has various positive outcomes, knowledge about its antecedents and the mediators of this relationship can therefore help to increase accompanying effects. The more future oriented facets psychological capital, i.e. optimism, hope self-efficacy have been shown in several studies be positively related negatively ill-being. Furthermore, recent suggest coping strategies as for these relationships. In our study, we examined longitudinal relation with...
The coronavirus pandemic did not only result in changes the provision and utilization of health care services general practice but also an increased workload for physicians medical assistants. VeCo study retrospectively explores experiences both professional groups two years after start pandemic.In March April 2022, practitioners assistants three German federal states Berlin, Brandenburg Thuringia were asked to complete a paper-based questionnaire.657 762 completed questionnaire. Both agreed...
The TerraSAR-X satellite is a high-resolution synthetic aperture radar (SAR) system launched in June 2007 which provides the option to split antenna along-track direction and sample two physical channels separately. Modern SARs are equipped with active phased array antennas multiple channels. In order keep costs low, uses redundant receiver unit for second channel such that fore aft signals combined by hybrid coupler form sum difference data. dual receive (DRA) mode can either be used...
Abstract Background Fibroblast growth factors FGF-1 and FGF-2 are often upregulated in tumors, but tightly bound to heparan sulphate proteoglycans of the extracellular matrix (ECM). One mechanism their bioactivation relies on FGF-binding protein (FGF-BP) which, upon reversible binding or -2, leads release from ECM. FGF-BP increases tumorigenicity is highly expressed tumors like colon carcinoma. In this paper, we analyse cellular molecular consequences RNAi-mediated knockdown carcinoma,...
This letter describes the first interferometric acquisitions and results obtained by TerraSAR-X add-on for Digital Elevation Measurements mission. Due to large along-track separation between two satellites during approaching maneuver Earth's rotation, useful were only possible at high latitudes. resulted in a crossing angle ground tracks whose impact was corrected acquiring synthetic-aperture radar images with an opposite squint. The still very 2-km cross-track baseline 3.8-m height of...
18F-sodium fluoride ([18F]fluoride) and gadobutrol are promising probes for positron emission tomography (PET) magnetic resonance imaging (MRI) characterizing coronary artery disease (CAD) activity. Unlike [18F]fluoride-PET/computed (CT), the potential of PET/MR using [18F]fluoride simultaneously, has so far not been evaluated. This study assessed feasibility diagnostic enhanced dual-probe in patients with CAD.Twenty-one (age, 66.7 ± 6.7 years) CAD scheduled invasive angiography (XCA)...
Tandem-L is a highly innovative SAR satellite mission for the global observation of dynamic processes on Earth's surface with hitherto unknown quality and resolution. Thanks to its novel imaging techniques unprecedented acquisition capacity, will deliver urgently needed information solution pressing scientific questions in areas biosphere, geosphere, cryosphere hydrosphere. The feasibility has been analyzed confirmed scope phase A study, which conducted close cooperation between German...
Abstract To evaluate the diagnostic performance of magnetic resonance imaging (MRI) alone in comparison to positron emission tomography/ (PET/MRI) patients with meningiomas. 57 a total 112 meningiomas brain were included. PET/MRI, including fully contrast enhanced MRI and PET, acquired. PET/MRI was used as reference standard. The size location recorded. Likelihood-ratio chi-square tests calculate p-values within logistic regression order compare different models. A multi-level applied comply...
When measurement invariance does not hold, researchers aim for partial by identifying anchor items that are assumed to be invariant. In this paper, we build on Bechger and Maris’s approach identification of items. Instead differential item functioning (DIF)-free items, they propose identify different sets invariant in parameters within the same set. We extend their an additional step order allow homogeneously sets. evaluate performance extended cluster under various conditions compare its...