2,850 research outputs found
Monitoring spatial sustainable development: Semi-automated analysis of satellite and aerial images for energy transition and sustainability indicators
Solar panels are installed by a large and growing number of households due to
the convenience of having cheap and renewable energy to power house appliances.
In contrast to other energy sources solar installations are distributed very
decentralized and spread over hundred-thousands of locations. On a global level
more than 25% of solar photovoltaic (PV) installations were decentralized. The
effect of the quick energy transition from a carbon based economy to a green
economy is though still very difficult to quantify. As a matter of fact the
quick adoption of solar panels by households is difficult to track, with local
registries that miss a large number of the newly built solar panels. This makes
the task of assessing the impact of renewable energies an impossible task.
Although models of the output of a region exist, they are often black box
estimations. This project's aim is twofold: First automate the process to
extract the location of solar panels from aerial or satellite images and
second, produce a map of solar panels along with statistics on the number of
solar panels. Further, this project takes place in a wider framework which
investigates how official statistics can benefit from new digital data sources.
At project completion, a method for detecting solar panels from aerial images
via machine learning will be developed and the methodology initially developed
for BE, DE and NL will be standardized for application to other EU countries.
In practice, machine learning techniques are used to identify solar panels in
satellite and aerial images for the province of Limburg (NL), Flanders (BE) and
North Rhine-Westphalia (DE).Comment: This document provides the reader with an overview of the various
datasets which will be used throughout the project. The collection of
satellite and aerial images as well as auxiliary information such as the
location of buildings and roofs which is required to train, test and validate
the machine learning algorithm that is being develope
Internet basierte Ausbildungssupervision
Ausbildungssupervision ist ein wertvoller Bestandteil der Praxisbegleitung in Studiengängen der Sozialen Arbeit und darüber hinaus. Befinden sich Supervisand und Supervisor räumlich weit voneinander entfernt, ist das Internet meist die einzige Möglichkeit, die supervisorische Begleitung sicher zu stellen. Der Autor zeigt Wege auf, wie dies mit Hilfe von E-Mail und Internettelefonie gelingen kann, evaluiert die Verfahren und gewinnt so wertvolle Erkenntnisse für die Weiterentwicklung Internet basierter Supervision. (DIPF/Orig.
SMALL SAMPLE SIZE CAPABILITY INDEX FOR ASSESSING VALIDITY OF ANALYTICAL METHODS
peer reviewedaudience: researcher, professional, studentAnalytical method’s capability evaluation can be a useful methodology to assess the fitness of purpose of these methods for their future routine application. However, care on how to compute the capability indices has to be made. Indeed, the commonly used formulas to compute capability indices such as Cpk, will highly overestimate the true capability of the methods. Especially during methods validation or transfer, there are only few experiments performed and, using in these situations the commonly applied capability indices to declare a method as valid or as transferable to a receiving laboratory will conduct to inadequate decisions.
In this work, an improved capability index, namely Cpk-tol and the corresponding estimator of proportion of non conforming results (tolCpk−π) is proposed. Through Monte-Carlo simulations, they have been shown to greatly increase the estimation of analytical methods capability in particular in low sample size situations as encountered during methods validation or transfer. Additionally, the usefulness of this capability index is illustrated through several case studies
Determination of fenofibrate, ciprofibrate and bezafibrate in mixtures by FTIR spectroscopy
Peer reviewe
A novel TOF-PET MRI detector for diagnosis and follow up of the prostate cancer
Prostate cancer is the most common disease in men and the second leading
cause of death from cancer. Generic large imaging instruments used in cancer
diagnosis have sensitivity, spatial resolution, and contrast inadequate for the
task of imaging details of a small organ such as the prostate. In addition,
multimodality imaging can play a significant role merging anatomical and
functional details coming from simultaneous PET and MRI. Indeed,
multi-parametric PET/MRI was demonstrated to improve diagnosis, but it suffers
from too many false positives. In order to address the above limits of the
current techniques, we have proposed, built and tested, thanks to the TOPEM
project funded by Italian National Institute of Nuclear Phisics a prototype of
an endorectal PET-TOF/MRI probe. In the applied magnification PET geometry,
performance is dominated by a high-resolution detector placed closer to the
source. The expected spatial resolution in the selected geometry is about 1.5
mm FWHM and efficiency a factor of 2 with respect to what obtained with the
conventional PET scanner. In our experimental studies, we have obtained timing
resolution of ~ 320 ps FWHM and at the same time Depth of Interaction (DOI)
resolution of under 1 mm. Tests also showed that mutual adverse PET-MR effects
are minimal. In addition, the matching endorectal RF coil was designed, built
and tested. In the next planned studies, we expect that benefiting from the
further progress in scintillator crystal surface treatment, in SiPM technology
and associated electronics would allow us to significantly improve TOF
resolutio
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