A5054376133- Remote-Sensing Image Classification
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Land Use and Ecosystem Services
- Remote Sensing and Land Use
- Advanced Electrical Measurement Techniques
- Automated Road and Building Extraction
- earthquake and tectonic studies
- Cryospheric studies and observations
- Earthquake Detection and Analysis
- Sensor Technology and Measurement Systems
- Power Quality and Harmonics
- Remote Sensing in Agriculture
- Flood Risk Assessment and Management
- Remote Sensing and LiDAR Applications
- Geotechnical and Geomechanical Engineering
- Groundwater and Watershed Analysis
- Physics and Engineering Research Articles
- Geographic Information Systems Studies
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Impact of Light on Environment and Health
- Geochemistry and Geologic Mapping
- Ecology, Conservation, and Geographical Studies
- 3D Modeling in Geospatial Applications
- Middle East and Rwanda Conflicts
University of Tübingen
2015-2024
TH Bingen University of Applied Sciences
2023
University of Salzburg
2015-2022
Christian Doppler Laboratory for Thermoelectricity
2022
Leibniz Institute for Regional Geography
2022
Stuttgart Observatory
2019
University of Hertfordshire
2009-2019
Bernstein Center for Computational Neuroscience Tübingen
2013
FZI Research Center for Information Technology
2010
Physikalisch-Technische Bundesanstalt
1973-1999
Existing definitions for power terms in alternating current systems work well single-phase and three-phase where both voltages currents are sinusoidal with respect to time. This paper clarifies proposes that practical effective when voltage and/or distorted unbalanced. It also suggests measurable values may be used indicate the level of distortion unbalance.
Abstract With the launch of Sentinel-1 in 2014, a new era openly accessible spaceborne radar imagery was begun, and its potential has been demonstrated throughout all fields applications. However, while interferometric approaches to detect surface deformations are continuously being published, only few studies address derivation digital elevation models (DEMs) from data. This is mainly because narrow orbital tube, which primarily designed for subsidence measurements using differential...
A new method for generating and measuring active, reactive, apparent power at frequencies has been devised. It makes use of digital signal synthesis discrete Fourier transform (DFT) evaluation based on a single master clock. This results in significant reduction synchronizing errors thus an uncertainty only 2.5/spl times/10/sup -6/ (k=1).
Abstract Vietnam is exposed to different types of floods that cause severe economic losses, damage infrastructure, and loss life. Reliable information on the drivers, patterns dynamics flood risk crucial for identification, prioritization planning reduction adaptation measures. Here, we present a systematic review existing assessments in Vietnam. We evaluate current status, persisting gaps, challenges regarding understanding assessment country. The literature revealed that: (i) 65 % reviewed...
Abstract. Due to their remoteness, altitude and harsh climatic conditions, little is known about the glaciological parameters of ice caps on Tibetan Plateau. This study presents a geodetic mass balance estimate Purogangri Ice Cap, Tibet's largest field between 2000 2012. We utilized data from actual TerraSAR-X mission its add-on for digital elevation measurements compared it with Shuttle Radar Topography Mission. The employed sets are ideal this approach as both were acquired at X-band...
Humanitarian action has rapidly adopted Earth observation (EO) and geospatial technologies shaping them according to their needs. Protracted crises large-scale population displacements require up-to-date information in many facets of humanitarian support, from mission planning, resource deployment monitoring, nutrition vaccination campaigns, camp plotting, damage assessment, etc. Even though nearly all assets remote sensing apply such demanding scenarios, it remains a challenge fully...
Approximately one million refugees of the Rohingya minority population in Myanmar crossed border to Bangladesh on 25 August 2017, seeking shelter from systematic oppression and persecution. This led a dramatic expansion Kutupalong refugee camp within couple months decrease vegetation surrounding forests. As many humanitarian organizations demand frameworks for monitoring environmental impact analysis, this study suggests workflow based spaceborne radar imagery measure settlements Eleven...
In Ho Chi Minh City (HCMC), Vietnam, though at present flooding is merely a recurring nuisance, there increasing concern that combination of impending climate change and rapid urbanization will significantly exacerbate the situation. Given significant measures taken in HCMC to reduce groundwater extraction sea-level rise (SLR) inundation since most recent subsidence studies, we aim update contribute information with continuous temporal coverage from 2017 2019. this study, use Persistent...
Ongoing urbanization leads to steady growth of urban areas. In the case highly dynamic change municipalities, due rates change, responsible administrations often are challenged or struggle with capturing present states sites accurately planning future development. An interest for lies on socio-economic conditions, as consumption and production disposable goods related economic possibilities. Therefore, we developed an approach generate relevant parameters infrastructure by means remote...
The growing relevance of promoting a transition urban mobility toward more sustainable modes transport is leading to efforts understand the effects built environment on use railway systems. In this direction, there are challenges regarding creation coherence between locations metro stations and their surroundings, which has been explored extensively in academic community. This process called Transit-Oriented Development (TOD). Within context Latin America, study seeks assess influence...
50 utilities in the United States and Canada responded to a questionnaire survey regarding concerns about nonsinusoidal waveforms electric distribution network. Responses instrumentation, apparent reactive power definitions, meter errors, rates, trends are presented discussed.
Earth-observation-based mapping plays a critical role in humanitarian responses by providing timely and accurate information inaccessible areas, or situations where frequent updates monitoring are required, such as internally displaced population (IDP)/refugee settlements. Manual extraction pipelines slow resource inefficient. Advances deep learning, especially convolutional neural networks (CNNs), state-of-the-art possibilities for automation extraction. This study investigates...
In the face of growing 21st-century urban challenges, this study emphasizes role remote sensing data in objectively defining structure types (USTs) based on morphology. While numerous UST delineation approaches exist, few are universally applicable due to constraints or impractical class schemes. This article attempts tackle challenge by summarizing important dealing with computation USTs and condense their contributions field research within a single comprehensive framework. Hereby,...
Abstract Trilingualism has often been studied within the framework established for bilingualism. Although there is overlap, dynamics around trilingualism pose greater variations than case with The aim of this study to analyse language practices different groups trilingual families. Particular attention paid influence various sociocultural and linguistic factors on whether or not parents used their native languages (NL) children. In semi-structured interviews in 35 families England Germany...
Rapidly urbanizing areas are challenged by a lack of information on urban growth in many parts the earth. As speed building construction often exceeds traditional surveying methods, remote sensing can serve as valuable input for monitoring urbanization processes. This study investigates changes DaNang, Vietnam, between 2015 and 2017 identified based photogrammetric analysis surface elevations retrieved from Pléiades very high-resolution imagery. In contrast to post-classification change...
This study assesses the quantity and composition of household solid waste (HSW) in City Da Nang proposes a transparent standardised method for its assessment through combination very-high-resolution (VHR) satellite imagery, field surveys, questionnaires, measurements on ground. was carried out order to identify underutilised resources obtain discrete planning values at city level. The procedure proved be suitable reliable data gathering. To describe HSW generation, 818 valid datasets,...
This study uses very high-resolution Pléiades imagery for the densely built-up central part of City Kigali year 2015 in order to derive urban morphology data on building footprints, archetypes and heights. Aerial images area from 2008–2009 were used combination with dataset create a change monitoring single basis. A semi-automated approach was chosen which combined an object-based image analysis expert-based revision. The result is geospatial that detects 165,625 buildings 211,458 2015....
This study investigates the elevation changes for island of Bhasan Char, located in Bay Bengal, which was selected relocation around 100,000 refugees Rohingya minority were forced to leave their homes Myanmar. Eighty-nine Sentinel-1 products analysed using persistent scatterer interferometry (PSI) beginning August 2016 through September 2019, divided into three periods one year reduce impact temporal decorrelation. The findings indicate that is a recent landform underlies naturally induced...
Change detection is one of the main applications in earth observation but currently there are only a few approaches based on radar imagery. Available techniques strongly focus optical data. These often limited to static analyses image pairs and frequently lacking results which address requirements user. Some these shortcomings include integration user’s expertise, transparency methods, communication comprehensive understandable way. This study introduces an index describing changes savanna...
The Healthy Child Programme is the universal public health system in England to assess and monitor child from 0 19. Following a review of measures for closer monitoring at age 2 years, Department Health implemented Ages & Stages Questionnaires®, Third Edition (ASQ-3™; Hereon, ASQ-3).