cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Insights into thermonuclear supernovae from the incomplete silicon burning process
Creators: name: Bravo, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Type Ia supernova (SNIa) explosions synthesize a few tenths to several tenths of a solar mass, whose composition is the result of incomplete silicon burning that reaches peak temperatures of 4 GK to 5 GK. The elemental abundances are sensitive to the physical conditions in the explosion, making their measurement a promising clue to uncovering the properties of the progenitor star and of the explosion itself. Using a parameterized description of the thermodynamic history of matter undergoing incomplete silicon burning, we computed the final composition for a range of parameters wide enough to encompass current models of SNIa. Then, we searched for combinations of elemental abundances that trace the parameters values and are potentially measurable. For this purpose, we divide the present study into two epochs of SNIa, namely the optical epoch, from a few weeks to several months after the explosion, and the X-ray epoch, which refers to the time period in which the supernova remnant is young, starting one or two hundred years age and ending a thousand years after the event. During the optical epoch, the only SNIa property that can be extracted from the detection of incomplete silicon burning elements is the neutron excess of the progenitor white dwarf at thermal runaway, which can be determined through measuring the ratio of the abundance of manganese to that of titanium, chromium, or vanadium. Conversely, in the X-ray epoch, any abundance ratio built using a couple of elements from titanium, vanadium, chromium, or manganese may constrain the initial neutron excess. Furthermore, measuring the ratio of the abundances of vanadium to manganese in the X-ray might shed light on the timescale of the thermonuclear explosion.
description: Accepted for Astronomy and Astrophysics (16 pages, 3 tables, 15 figures)
Aspects of resilience in the reconstruction of Kalamata (Greece) after the earthquake disaster of 1986
Creators: name: Dandulaki, Miranda
Publisher: name: Hannover : Leibniz Universität Hannover, Institut für Umweltplanung
Year: 2018
Subjects: subject: Climate change
subject: Urban area
subject: Heat islands
subject: Resilience
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung

description: The paper discusses the case the reconstruction of Kalamata city, Greece, after the 1986 earthquake disaster, focussing on urban resilience during the phases of response, recovery and reconstruction. In doing so, it revisits the concept of resilience as an analytical and policy tool. A set of factors are identified as significant for the success oft he reconstruction. The political and economic context in the country at the time was favourable to innovative strategies. At a local level, strong leadership at the Municipality played an important role together with the availability of external expertise and consultancy. Furthermore, the fact that a new and comprehensive general urban plan was in place a few months before made possible the key decision to set it as a guide towards reconstruction. Numerous features of resilience are detected in this specific case, among them leadership, self-organization, innovation, knowledge and learning capacity, networking and trust, interaction between different spatial and time scales. However, if those signify at large a resilient city against disasters remains questionable.
Quasisymmetric rigidity of Sierpinski carpets $F_{n,p}$
Creators: name: Zeng, Jinsong
name: Su, Weixu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We study a new class of square Sierpiński carpets $F_{n,p}$ ($5\leq n, 1\leq p
description: 24 pages, 5 figures. arXiv admin note: text overlap with arXiv:1102.3224 by other authors
CrowdSim2: an Open Synthetic Benchmark for Object Detectors
Creators: name: Foszner, Paweł
name: Szczęsna, Agnieszka
name: Ciampi, Luca
name: Messina, Nicola
name: Cygan, Adam
name: Bizoń, Bartosz
name: Cogiel, Michał
name: Golba, Dominik
name: Macioszek, Elżbieta
name: Staniszewski, Michał
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Data scarcity has become one of the main obstacles to developing supervised models based on Artificial Intelligence in Computer Vision. Indeed, Deep Learning-based models systematically struggle when applied in new scenarios never seen during training and may not be adequately tested in non-ordinary yet crucial real-world situations. This paper presents and publicly releases CrowdSim2, a new synthetic collection of images suitable for people and vehicle detection gathered from a simulator based on the Unity graphical engine. It consists of thousands of images gathered from various synthetic scenarios resembling the real world, where we varied some factors of interest, such as the weather conditions and the number of objects in the scenes. The labels are automatically collected and consist of bounding boxes that precisely localize objects belonging to the two object classes, leaving out humans from the annotation pipeline. We exploited this new benchmark as a testing ground for some state-of-the-art detectors, showing that our simulated scenarios can be a valuable tool for measuring their performances in a controlled environment.
description: Proceedings of the 18th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2023
Phenomenology of Partially Composite Standard Model
Creators: name: Abe, Tomohiro
name: Kitano, Ryuichiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a model to describe the low energy physics of partially composite Standard Model, in which the electroweak sector in the Standard Model is weakly coupled to some strong dynamics. The vector resonances in the strong sector are introduced as the effective degrees of freedom, W' and Z', which mixes with the W and Z bosons through the electroweak symmetry breaking. Through the coupling to the strong sector, the Standard Model Higgs boson becomes partially composite, and its properties are modified. We study the constraints from the electroweak precision data and direct searches of W' and Z' at the LHC expriments, and discuss the effects on the production/decay properties of the Higgs boson.
description: 33 pages, 40 figures
title: Adolf Luttropp / Gerhard Bosinski: Der altsteinzeitliche Fundplatz Reutersruh bei Ziegenhain in Hessen. Fundamenta. Monographien zur Urgeschichte Reihe A Band 6. Köln 1971
Creators: name: Wagner, Eberhard
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Adolf Luttropp / Gerhard Bosinski: Der altsteinzeitliche Fundplatz Reutersruh bei Ziegenhain in Hessen. Fundamenta. Monographien zur Urgeschichte Reihe A Band 6. Böhlau-Verlag, Köln 1971. VIII, 96 Seiten, 56 Abbildungen, 215 Tafeln.
Ermittlung der Störspannungen an HF-Antennen unter Einsatz der MoM
Creators: name: Harms, Harm-Friedrich
name: Arends, Holger
name: Büscher, Thorsten
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Hochfrequenzanlage
subject: Antennenanlage
subject: Antennenmessung
subject: Störspannung
subject: Kurzwellenübertragung
subject: Marinetechnik
subject: Wehrtechnik
subject: EMV (elektromagnetische Verträglichkeit)
subject: VG-Norm
subject: Störquelle
subject: simuliertes Ergebnis
subject: Momentenmethode
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Aufgrund der zahlreichen elektrischen und elektronischen Geräte und Anlagen hat die Elektromagnetische Verträglichkeit (EMV) einen hohen Stellenwert auf Marineschiffen. Im Rahmen der EMV werden auch die Thematik des HF-Strahlenschutzes (Personengefährdung) sowie die Vermeidung der Gefährdung von Kraftstoffen und Munition betrachtet. Neben der offensichtlichen Funktion als Aufklärungs- und als Waffensystem stellen moderne Marineschiffe insbesondere schwimmende Kommunikationszentralen dar. Daher hat innerhalb der EMV gerade die Betrachtung des ungestörten Funkempfangs einen hohen Stellenwert (VG-Norm). Vorliegende Untersuchungen beschränken sich auf den Kurzwellenbereich (1,5 MHz bis 30 MHz). Nach Ausführungen zur externen Kommunikation auf Marineschiffen und zu Störspannungen an Betriebsempfangsantennenanlagen (Tabelle: Vorgabe der Gerätegrenzwerte gemäß VG-Norm) befassen sich die Autoren mit der Untersuchung der Störspannungen, wie folgt gegliedert: Simulation der potentiellen Störquelle (Momentenmethode, Abb.: Störquelle wird durch eine Loop nachgebildet, die in alle Koordinatenachsen gelegt wird); Verifikation des Modells an einer typischen Schiffskonfiguration (3 Abb.); Verarbeitung der Simulationsergebnisse (2 Abb.) sowie Auswertung der Resultate. Die Verifikation hat gezeigt, dass das gewählte Verfahren realistische Werte für die Störspannungen an den Betriebsempfangsantennenanlagen liefern kann. Insofern scheint das Verfahren geeignet für die Untersuchung des Schiffsdesigns. Das dargestellte Vorgehen wurde genutzt um Simulationen für einen konkreten Schiffsentwurf durchzuführen. Da das Verfahren recht aufwändig ist, sollte es nur für kritische Konstellationen von potentiellen Störsenken und Störquellen genutzt werden.
Constraining Palatini cosmological models using GRB data
Creators: name: Kamionka, Michal
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: New constraints on previously investigated Palatini cosmological models [arXiv:1109.3420] have been obtained by adding Gamma Ray Burst data [arXiv:1205.2954].
description: 4 pages, 5 figures
Mining Techniques in Network Security to Enhance Intrusion Detection Systems
Creators: name: Salem, Maher
name: Buehler, Ulrich
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In intrusion detection systems, classifiers still suffer from several drawbacks such as data dimensionality and dominance, different network feature types, and data impact on the classification. In this paper two significant enhancements are presented to solve these drawbacks. The first enhancement is an improved feature selection using sequential backward search and information gain. This, in turn, extracts valuable features that enhance positively the detection rate and reduce the false positive rate. The second enhancement is transferring nominal network features to numeric ones by exploiting the discrete random variable and the probability mass function to solve the problem of different feature types, the problem of data dominance, and data impact on the classification. The latter is combined to known normalization methods to achieve a significant hybrid normalization approach. Finally, an intensive and comparative study approves the efficiency of these enhancements and shows better performance comparing to other proposed methods.
description: 16 pages, 7 figures
Macroscopic Quantum Mechanics: Theory and Experimental Concepts of Optomechanics
Creators: name: Chen, Yanbei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Rapid experimental progress has recently allowed the use of light to prepare macroscopic mechanical objects into nearly pure quantum states. This research field of quantum optomechanics opens new doors toward testing quantum mechanics, and possibly other laws of physics, in new regimes. In the first part of this paper, I will review a set of techniques of quantum measurement theory that are often used to analyze quantum optomechanical systems. Some of these techniques were originally designed to analyze how a classical driving force passes through a quantum system, and can eventually be detected with optimal signal-to-noise ratio --- while others focus more on the quantum state evolution of a mechanical object under continuous monitoring. In the second part of this paper, I will review a set of experimental concepts that will demonstrate quantum mechanical behavior of macroscopic objects --- quantum entanglement, quantum teleportation, and the quantum Zeno effect. Taking the interplay between gravity and quantum mechanics as an example, I will review a set of speculations on how quantum mechanics can be modified for macroscopic objects, and how these speculations --- and their generalizations --- might be tested by optomechanics.
description: 96 pages, 21 figures and 1 table
title: Gernot Tromnau: Die Fundplätze der Hamburger Kultur von Heber und Deimern, Kreis Soltau. Materialhefte zur Ur- und Frühgeschichte Niedersachsens Heft 9. Hildesheim 1975
Creators: name: Mauser, Peter Florian
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Gernot Tromnau: Die Fundplätze der Hamburger Kultur von Heber und Deimern, Kreis Soltau. Materialhefte zur Ur- und Frühgeschichte Niedersachsens Heft 9. Verlag August Lax, Hildesheim 1975. VIII, 46 Seiten, 82 Tafeln, 30 Textabbildungen und Karten.
Low-temperature muon spin rotation studies of the monopole charges and currents in Y doped Ho2Ti2O7
Creators: name: Chang, L. J.
name: Lees, M. R.
name: Balakrishnan, G.
name: Kao, Y. -J.
name: Hillier, A. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the ground state of Ho2Ti2O7 spin ice, the disorder of the magnetic moments follows the same rules as the proton disorder in water ice. Excitations take the form of magnetic monopoles that interact via a magnetic Coulomb interaction. Muon spin rotation has been used to probe the low-temperature magnetic behaviour in single crystal Ho2-xYxTi2O7 (x=0, 0.1, 1, 1.6 and 2). At very low temperatures, a linear field dependence for the relaxation rate of the muon precession lambda(B), that in some previous experiments on Dy2Ti2O7 spin ice has been associated with monopole currents, is observed in samples with x=0, and 0.1. A signal from the magnetic fields penetrating into the silver sample plate due to the magnetization of the crystals is observed for all the samples containing Ho allowing us to study the unusual magnetic dynamics of Y doped spin ice.
description: 15 pages, 6 figures, to appear in Scientific Reports
Rapid Angular Expansion of the Ionized Core of CRL 618
Creators: name: Tafoya, D.
name: Loinard, L.
name: Fonfría, J. P.
name: Vlemmings, W. H. T.
name: Martí-Vidal, I.
name: Pech, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: CRL 618 is an object that exhibits characteristics of both AGB and post-AGB star. It also displays a spectacular array of bipolar lobes with a dense equatorial region, which makes it an excellent object to study the development of asymmetries in evolved stars. In the recent decades, an elliptical compact HII region located in the center of the nebula has been seen to be increasing in size and flux. This seems to be due to the ionization of the circumstellar envelope by the central star, and it would be indicating the beginning of the planetary nebula phase for CRL 618. We analyzed interferometric radio continuum data at ~5 and 22 GHz from observations carried out at seven epochs with the VLA. We traced the increase of the flux of the ionized region over a period of ~26 years. We measured the dimensions of the HII region directly from the brightness distribution images to determine the increase of its size over time. For one of the epochs we analyzed observations at six frequencies from which we estimated the electron density distribution. We carried out model calculations of the spectral energy distribution at two different epochs to corroborate our observational results. We found that the radio continuum flux and the size of the ionized region have been increasing monotonically in the last three decades. The size of the major axis of the HII region shows a dependance with frequency, which has been interpreted as a result of a gradient of the electron density in this direction. The growth of the HII region is due to the expansion of an ionized wind whose mass-loss rate increased continuously for a period of ~100 years until a few decades ago, when the mass-loss rate experienced a sudden decline. Our results indicate that the beginning of the ionization of the circumstellar envelope began around 1971, which marks the start of the planetary nebula phase of CRL 618.
description: 11 pages, 7 figures. Accepted to be published in Astronomy & Astrophysics
Juncus effusus L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: J. effusus L. Cat. 353. l: Outre-Rhône (Gams). - 3a: Howeggi bei Gondo (Becherer). Var. elatus A. et G. - l: Plex (Gams).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Feature Guided Training and Rotational Standardisation for the Morphological Classification of Radio Galaxies
Creators: name: Brand, Kevin
name: Grobler, Trienko L.
name: Kleynhans, Waldo
name: Vaccari, Mattia
name: Prescott, Matthew
name: Becker, Burger
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: State-of-the-art radio observatories produce large amounts of data which can be used to study the properties of radio galaxies. However, with this rapid increase in data volume, it has become unrealistic to manually process all of the incoming data, which in turn led to the development of automated approaches for data processing tasks, such as morphological classification. Deep learning plays a crucial role in this automation process and it has been shown that convolutional neural networks (CNNs) can deliver good performance in the morphological classification of radio galaxies. This paper investigates two adaptations to the application of these CNNs for radio galaxy classification. The first adaptation consists of using principal component analysis (PCA) during preprocessing to align the galaxies' principal components with the axes of the coordinate system, which will normalize the orientation of the galaxies. This adaptation led to a significant improvement in the classification accuracy of the CNNs and decreased the average time required to train the models. The second adaptation consists of guiding the CNN to look for specific features within the samples in an attempt to utilize domain knowledge to improve the training process. It was found that this adaptation generally leads to a stabler training process and in certain instances reduced overfitting within the network, as well as the number of epochs required for training.
description: 20 pages, 17 figures, this is a pre-copyedited, author-produced PDF of an article accepted for publication in the Monthly Notices of the Royal Astronomical Society
title: Spätkaiserzeitliche Funde in Westfalen. Bodenaltertümer Westfalens. Band 12. Aschendorff, Münster 1970
Creators: name: Garbsch, Jochen
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Spätkaiserzeitliche Funde in Westfalen. Bodenaltertümer Westfalens (Hrsg. H. Beck) Band 12. Aschendorff, Münster 1970. VIII, 145 Seiten, 50 Abbildungen, 53 Tafeln.
Plutonium release from Fukushima Daiichi fosters the need for more detailed investigations
Creators: name: Schneider, Stephanie
name: Walther, Clemens
name: Bister, Stefan
name: Schauer, Viktoria
name: Christl, Marcus
name: Synal, Hans-Arno
name: Shozugawa, Katsumi
name: Steinhauser, Georg
Publisher: name: Lausanne : Frontiers Research Foundation
Year: 2013
Subjects: subject: power-plant accident
subject: nuclear accident
subject: japanese soils
subject: ams facility
subject: isotopes
subject: pu
subject: identification
subject: radionuclides
subject: contamination
subject: environment
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The contamination of Japan after the Fukushima accident has been investigated mainly for volatile fission products, but only sparsely for actinides such as plutonium. Only small releases of actinides were estimated in Fukushima. Plutonium is still omnipresent in the environment from previous atmospheric nuclear weapons tests. We investigated soil and plants sampled at different hot spots in Japan, searching for reactor-borne plutonium using its isotopic ratio Pu-240/Pu-239. By using accelerator mass spectrometry, we clearly demonstrated the release of Pu from the Fukushima Daiichi power plant: While most samples contained only the radionuclide signature of fallout plutonium, there is at least one vegetation sample whose isotope ratio (0.381 +/- 0.046) evidences that the Pu originates from a nuclear reactor (Pu239+240 activity concentration 0.49 Bq/kg). Plutonium content and isotope ratios differ considerably even for very close sampling locations, e.g. the soil and the plants growing on it. This strong localization indicates a particulate Pu release, which is of high radiological risk if incorporated.
title: Изменение свойств ротовой жидкости при рентгенодиагностике болезней зубов стоматологических пациентов
Creators: name: Бритова, Аля
name: Колбина, Анастасия
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Дентальная рентгенография неблагоприятно влияет на свойства ротовой жидкости и зависит от дозы излучения. Кристаллография ротовой жидкости визуализирует изменения в виде деформации, распада кристаллов и более выражена в зоне прямого действия излучения. Увеличение времени экспозиции рентгеновского излучения в 4 раза, что может быть обусловлено по клиническим показаниям, почти полностью подавляет кристаллизацию ротовой жидкости.
Fukushima-derived radionuclides in sediments of the Japanese Pacific Ocean coast and various Japanese water samples (seawater, tap water, and coolant water of Fukushima Daiichi reactor unit 5)
Creators: name: Shozugawa, Katsumi
name: Riebe, Beate
name: Walther, Clemens
name: Brandl, Alexander
name: Steinhauser, Georg
Publisher: name: Cham : Springer
Year: 2016
Subjects: subject: Fukushima
subject: Environmental radioactivity
subject: Pacific Ocean
subject: Cesium
subject: 129I
subject: 90Sr
subject: 3H
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We investigated Ocean sediments and seawater from inside the Fukushima exclusion zone and found radiocesium (134Cs and 137Cs) up to 800 Bq kg-1 as well as 90Sr up to 5.6 Bq kg-1. This is one of the first reports on radiostrontium in sea sediments from the Fukushima exclusion zone. Seawater exhibited contamination levels up to 5.3 Bq kg-1 radiocesium. Tap water from Tokyo from weeks after the accident exhibited detectable but harmless activities of radiocesium (well below the regulatory limit). Analysis of the Unit 5 reactor coolant (finding only 3H and even low 129I) leads to the conclusion that the purification techniques for reactor coolant employed at Fukushima Daiichi are very effective.
title: КРИМИНОЛОГИЧЕСКАЯ ХАРАКТЕРИСТИКА ЛИЦ, ОБВИНЯЕМЫХ В ПРЕСТУПЛЕНИЯХ ПРОТИВ ПОЛОВОЙ НЕПРИКОСНОВЕННОСТИ   НЕСОВЕРШЕННОЛЕТНИХ
Creators: name: Кабак, Татьяна
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье обобщены и проанализированы на основе существующих исследований значимые особенности формирования личности  преступников, обвиняемых в преступлениях против половой неприкосновенности несовершеннолетних, в частности это отсутствие работы, низкий уровень образования, отсутствие должного воспитания в семье, отсутствие постоянного полового партнера, злоупотребление спиртными напитками.
Deep learning based feature matching and its application in image orientation
Creators: name: Chen, Lie
name: Rottensteiner, Franz
name: Heipke, Christian
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2020
Subjects: subject: image matching
subject: affine shape estimation
subject: descriptor learning
subject: feature orientation
subject: image orientation
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Matching images containing large viewpoint and viewing direction changes, resulting in large perspective differences, still is a very challenging problem. Affine shape estimation, orientation assignment and feature description algorithms based on detected hand crafted features have shown to be error prone. In this paper, affine shape estimation, orientation assignment and description of local features is achieved through deep learning. Those three modules are trained based on loss functions optimizing the matching performance of input patch pairs. The trained descriptors are first evaluated on the Brown dataset (Brown et al., 2011), a standard descriptor performance benchmark. The whole pipeline is then tested on images of small blocks acquired with an aerial penta camera, to compute image orientation. The results show that learned features perform significantly better than alternatives based on hand crafted features. © 2020 Copernicus GmbH. All rights reserved.
Assessing the semantic similarity of images of silk fabrics using convolutional neural networks
Creators: name: Clermont, D.
name: Dorozynski, Mareike
name: Wittich, Dennis
name: Rottensteiner, Franz
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2020
Subjects: subject: convolutional neural networks
subject: image similarity
subject: cultural heritage
subject: silk fabrics|iIncomplete training samples
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: This paper proposes several methods for training a Convolutional Neural Network (CNN) for learning the similarity between images of silk fabrics based on multiple semantic properties of the fabrics. In the context of the EU H2020 project SILKNOW (http://silknow.eu/), two variants of training were developed, one based on a Siamese CNN and one based on a triplet architecture. We propose different definitions of similarity and different loss functions for both training strategies, some of them also allowing the use of incomplete information about the training data. We assess the quality of the trained model by using the learned image features in a k-NN classification. We achieve overall accuracies of 93-95% and average F1-scores of 87-92%. © 2020 Copernicus GmbH. All rights reserved.
Mems based bridge monitoring supported by image-assisted total station
Creators: name: Omidalizarandi, M.
name: Neumann, I.
name: Kemkes, E.
name: Kargoll, B.
name: Diener, D.
name: Rüffer, J.
name: Paffenholz, J.-A.
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2019
Subjects: subject: displacement and vibration analysis
subject: MEMS accelerometer
subject: image-assisted total station
subject: modal parameter identification
subject: robust parameter estimation
subject: Kalman filter
subject: bridge monitoring
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In this study, the feasibility of Micro-Electro-Mechanical System (MEMS) accelerometers and an image-assisted total station (IATS) for short-and long-term deformation monitoring of bridge structures is investigated. The MEMS sensors of type BNO055 from Bosch as part of a geo-sensor network are mounted at different positions of the bridge structure. In order to degrade the impact of systematic errors on the acceleration measurements, the deterministic calibration parameters are determined for fixed positions using a KUKA youBot in a climate chamber over certain temperature ranges. The measured acceleration data, with a sampling frequency of 100 Hz, yields accurate estimates of the modal parameters over short time intervals but suffer from accuracy degradation for absolute position estimates with time. To overcome this problem, video frames of a passive target, attached in the vicinity of one of the MEMS sensors, are captured from an embedded on-axis telescope camera of the IATS of type Leica Nova MS50 MultiStation with a practical sampling frequency of 10 Hz. To identify the modal parameters such as eigenfrequencies and modal damping for both acceleration and displacement time series, a damped harmonic oscillation model is employed together with an autoregressive (AR) model of coloured measurement noise. The AR model is solved by means of a generalized expectation maximization (GEM) algorithm. Subsequently, the estimated model parameters from the IATS are used for coordinate updates of the MEMS sensor within a Kalman filter approach. The experiment was performed for a synthetic bridge and the analysis shows an accuracy level of sub-millimetre for amplitudes and much better than 0.1 Hz for the frequencies. © 2019 M. Omidalizarandi et al.
Calibration and validation of Corona Kh-4B to generate height models and orthoimages
Creators: name: Jacobsen, Karsten
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2020
Subjects: subject: CORONA-KH-4B
subject: calibration
subject: validation
subject: merge with TDM90
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: At 48 years of age CORONA-KH-4B images are important for actual urban planning in Bangladesh, where no old maps or aerial images exist, indicating locations of former water courses that are no longer visible, but causing problems for the stability of building ground. CORONA KH-4B images are available for very low cost or even free of charge. A forward and a backward-looking panoramic camera with a nadir angle of approximately 15° enabled a stereoscopic coverage. Taken from a height of 154km, an image covers approximately 220km × 14km up to 17km with a height to base relation of 1:1.85. The ground sampling distance (GSD) varies with the incidence angle from 1.77m in the centre of the image up to 2.18m in Y-direction and 2.69m in the X-direction at the ends of the images. These nice conditions of the old images are affected by geometric problems of the panoramic images. A geometric bending can be improved by a correction based on the available sidelines, nevertheless deformations dominantly in the longitudinal direction only can be determined based on ground control points. A group of neighboured images have similar deformations, allowing the determination of a correction grid, describing the systematic image errors. This improved the geometry strongly, but could not eliminate all individual and local geometric problems. The high morphologic quality of the CORONA images, but limited absolute height accuracy has been improved by merging with the highly accurate TDM90 height model. For ortho images a fitting of neighboured images was required. © 2020 Copernicus GmbH. All rights reserved.
Using redundant information from multiple aerial images for the detection of bomb craters based on marked point processes
Creators: name: Kruse, Christian
name: Rottensteiner, Franz
name: Heipke, Christian
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2020
Subjects: subject: marked point processes
subject: RJMCMC
subject: multiple aerial wartime images
subject: bomb craters
subject: duds
subject: impact maps
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Many countries were the target of air strikes during World War II. Numerous unexploded bombs still exist in the ground. These duds can be tracked down with the help of bomb craters, indicating areas where unexploded bombs may be located. Such areas are documented in so-called impact maps based on detected bomb craters. In this paper, a stochastic approach based on marked point processes (MPPs) for the automatic detection of bomb craters in aerial images taken during World War II is presented. As most areas are covered by multiple images, the influence of redundant image information on the object detection result is investigated: We compare the results generated based on single images with those obtained by our new approach that combines the individual detection results of multiple images covering the same location. The object model for the bomb craters is represented by circles. Our MPP approach determines the most likely configuration of objects within the scene. The goal is reached by minimizing an energy function that describes the conformity with a predefined model by Reversible Jump Markov Chain Monte Carlo sampling in combination with simulated annealing. Afterwards, a probability map is generated from the automatic detections via kernel density estimation. By setting a threshold, areas around the detections are classified as contaminated or uncontaminated sites, respectively, which results in an impact map. Our results show a significant improvement with respect to its quality when redundant image information is used. © 2020 Copernicus GmbH. All rights reserved.
Die Vorverstärkerentkopplung in der Magnetresonanztomographie
Creators: name: Pannicke, Enrico
name: Müller, R.
name: Vick, Ralf
name: Moeller, H.E.
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Magnetresonanztomographie
subject: Edelstein
subject: Vorverstärker
subject: Eingangswiderstand
subject: Wirtschaftszone
subject: Stand der Technik
subject: Reflexionsfaktor
subject: Wellenlänge
subject: Spannungsquelle
subject: Eingangsimpedanz
subject: Medizintechnik
subject: Übertragungsfunktion
subject: Induktivität
subject: SNR (Signal-Rausch-Verhältnis)
subject: Kapazität (Kondensator)
subject: Qualitätsparameter
subject: Spulenarray
subject: Signalübertrag
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Es wurde ein einfaches Konzept für die Entkopplung von Empfangsspulen in der Magnetresonanztomographie beschrieben, das es ermöglicht, die maximale Stromunterdrückung für jegliche Art Verstärker zu finden. Die neue Formulierung verdeutlicht, welche Komponenten beim Entwurf einer solchen Schaltung wichtig sind und unterscheidet sich damit von der ursprünglichen Darstellung [P. B. Roemer, W. A. Edelstein, C. E. Hayes, S. P. Souza, and O. M. Mueller. The NMR Phased Array. Magnetic Resonance in Medicine, 16(2):192-225, 1990]. Dies wurde in Experiment I nachgewiesen. Zusätzlich lässt sich mittels dieser neuen Darstellung ein Qualitätsparameter definieren, der die Stromminimierung charakterisiert und damit vergleichbar macht. Die vereinfachte Darstellung macht auch ein vielfach beobachtetes Phänomen leicht erklärbar. Durch die Vorverstärkerentkopplung wird der Strom am Übergang A/B minimiert, aber die Spannung wird maximiert. Gerade für dicht gepackte Spulenarrays oder benachbarte Spulen, die mit einem "magic overlap" entkoppelt wurden, ist dies problematisch. Diese Methode verringert zwar die magnetische Kopplung, hat aber parasitäre Kopplungskapazitäten zur Folge. Durch die Maximierung der Spannung wird der Signalübertrag über diesen Koppelpfad erhöht. Eine Kombination beider Methoden sollte deshalb vermieden werden. Diese Schlussfolgerung steht im Einklang mit den Beobachtungen anderer Forschungsgruppen [R. F. Lee, R. O. Giaquinto, and C. J. Hardy. Coupling and decoupling theory and its application to the mri phased array. Magnetic Resonance in Medicine, 48(1):203-213, 2002; D. Zanche, Nordmeyer-Massner, Brunner, and Pruessmann. Noise correlation and coupling mechanisms: a comparison of overlapped and non-overlapped surface coils at 3T. In ISMRM, 2008]. Außerdem wurde analytisch und experimentell eine besondere Eigenschaft dieser Schaltung nachgewiesen - ihre Stabilität gegenüber Beladungsänderung der Spule.
A hybrid global image orientation method for simultaneously estimating global rotations and global translations
Creators: name: Wang, Xin
name: Xiao, Teng
name: Kasten, Yoni
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2020
Subjects: subject: image orientation
subject: global structure from motion (SfM)
subject: global rotations estimation
subject: global translation estimation
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In recent years, the determination of global image orientation, i.e. global SfM, has gained a lot of attentions from researchers, mainly due to its time efficiency. Most of the global methods take relative rotations and translations as input for a two-step strategy comprised of global rotation averaging and global translation averaging. This paper by contrast presents a hybrid approach that aims to solve global rotations and translations simultaneously, but hierarchically. We first extract an optimal minimum cover connected image triplet set (OMCTS) which includes all available images with a minimum number of triplets, all of them with the three related relative orientations being compatible to each other. For non-collinear triplets in the OMCTS, we introduce some basic characterizations of the corresponding essential matrices and solve for the image pose parameters by averaging the constrained essential matrices. For the collinear triplets, on the other hand, the image pose parameters are estimated by relative orientation using the depth of object points from individual local spatial intersection. Finally, all image orientations are estimated in a common coordinate frame by traversing every solved triplet using a similarity transformation. We show results of our method on different benchmarks and demonstrate the performance and capability of the proposed approach by comparing with other global SfM methods. © 2020 Copernicus GmbH. All rights reserved.
FAIR Data Week: R for Reusable
Creators: name: Shigapov, Renat
Publisher: name: Zenodo
Year: 2023
Subjects: subject: FAIR principles
subject: FAIR data
subject: reusable
subject: reusability
subject: https://w3id.org/fair/principles/terms/FAIR
subject: https://w3id.org/fair/principles/terms/R

description: This is a short introduction into reusable data in context of the FAIR principles from Research Data Center of the University of Mannheim. It provides definition, motivation and basic ways how to make your data reusable. There is additionally a GitHub repository for the whole course: https://github.com/UB-Mannheim/FAIR-Data-Week.
2D titanium carbonitrides and their hydroxylated derivatives: Structural, electronic properties and stability of MXenes Ti3C2-xNx and Ti3C2-xNx(OH)2
Creators: name: Enyashin, A. N.
name: Ivanovskii, A. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: 3D titanium carbonitrides TiCxNy possess excellent physical, chemical, and mechanical properties, attractive for various industrial applications. Most recently, the uncommon nano-sized layers of 2D-like titanium carbonitrides were fabricated from MAX phases. Herein, the structural, electronic properties and stability of these new compounds as well as their hydroxylated derivatives - so-called MXenes Ti3C2-xNx and Ti3C2-xNx(OH)2 are probed by means of SSC-DFTB calculations. The genesis of the properties is discussed in the sequence: binary MXenes Ti3C2 (Ti3N2) -> their hydroxylated forms Ti3C2(OH)2 (Ti3N2(OH)2) -> pristine MXene Ti3C2-xNx -> hydroxylated Ti3C2-xNx(OH)2. Our results show that the examined materials are metallic-like. The most favorable type of OH-covering is presented by the occupation of the hollow sites between three neighboring carbon (nitrogen) atoms. The formation of 2D MXene carbonitrides with random distribution of C and N atoms was found to be thermodynamically more favorable.
Multiple transitions of the spin configuration in quantum dots
Creators: name: Rogge, M.C.
name: Fühner, C.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Physical Society
Year: 2006
Subjects: subject: Electron tunneling
subject: Magnetic fields
subject: Quantum theory
subject: Electron numbers
subject: Kondo effect
subject: Single electron tunneling
subject: Spin configuration
subject: Semiconductor quantum dots
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Single electron tunneling is studied in a many electron quantum dot in high magnetic fields. For such a system multiple transitions of the spin configuration are theoretically predicted. With a combination of spin blockade and Kondo effect we are able to detect five regions with different spin configurations. Transitions are induced with changing electron numbers. © 2006 The American Physical Society.
Feature-assisted interactive geometry reconstruction in 3D point clouds using incremental region growing
Creators: name: Szabo, Attila
name: Haaser, Georg
name: Steinlechner, Harald
name: Walch, Andreas
name: Maierhofer, Stefan
name: Ortner, Thomas
name: Gröller, Eduard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences
subject: I.3.8
subject: 68U07

description: Reconstructing geometric shapes from point clouds is a common task that is often accomplished by experts manually modeling geometries in CAD-capable software. State-of-the-art workflows based on fully automatic geometry extraction are limited by point cloud density and memory constraints, and require pre- and post-processing by the user. In this work, we present a framework for interactive, user-driven, feature-assisted geometry reconstruction from arbitrarily sized point clouds. Based on seeded region-growing point cloud segmentation, the user interactively extracts planar pieces of geometry and utilizes contextual suggestions to point out plane surfaces, normal and tangential directions, and edges and corners. We implement a set of feature-assisted tools for high-precision modeling tasks in architecture and urban surveying scenarios, enabling instant-feedback interactive point cloud manipulation on large-scale data collected from real-world building interiors and facades. We evaluate our results through systematic measurement of the reconstruction accuracy, and interviews with domain experts who deploy our framework in a commercial setting and give both structured and subjective feedback.
description: 13 pages, submitted to Computers & Graphics Journal
The development of a digital twin framework for an industrial robotic drilling process
Creators: name: FARHADI, AHMAD
name: LEE, STEPHEN
name: Hinchy, Eoin P.
name: O'Dowd, Noel
name: Mc Carthy, Conor
Publisher: name: University of Limerick
Year: 2023
Subjects: Engineering

description: A digital twin is a digital representation of a physical entity that is updated in real-time by transfer of data between physical and digital (virtual) entities. In this manuscript we aim to introduce a digital twin framework for robotic drilling. Initially, a generic reference model is proposed to highlight elements of the digital twin relevant to robotic drilling. Then, a precise reference digital twin architecture model is developed, based on available standards and technologies. Finally, real-time visualisation of drilling process parameters is demonstrated as an initial step towards implementing a digital twin of a robotic drilling process.
HKPORI: Tracking Omnibus Survey: July 2019
Creators: name: Hong Kong Public Opinion Research Institute (HKPORI)
Publisher: name: Roper Center for Public Opinion Research
Year: 2023

description: Familiarity with Legislative Councillors (1); voted in previous council elections (1); ratings of Legislative Councillors (6); rating of Chief Executive Carrie Lam (1); would you vote for Carrie Lam (1); rating of Chief Secretary for Administration Matthew Cheung (1); would you vote for Matthew Cheung (1); rating of Financial Secretary Paul Chan (1); would you vote for Paul Chan (1); rating of Secretary for Justice Teresa Cheng (1); would you vote for Teresa Cheng (1); would you vote for various other Secretaries (13); name 10 contemporary Chinese or Taiwanese leaders most familiar with (1); confidence in reunification of Taiwan and Mainland China (1); Taiwan rejoining United Nations (UN) (1); Taiwanese independence (1); “One country, two systems” applicable to Taiwan (1); Tibetan independence (1); name 10 governments of countries or regions most familiar with other than Hong Kong, Mainland China, Taiwan and Macau (1).
title: ОТДЕЛЬНЫЕ ВОПРОСЫ ИСПОЛНЕНИЯ НАКАЗАНИЯ В ВИДЕ ОБЯЗАТЕЛЬНЫХ РАБОТ
Creators: name: Кадникова, Татьяна
name: Орлов, Вячеслав
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье рассмотрены некоторые проблемы, связанные с исполнением уголовного наказания в виде обязательных работ. Недостаточная законодательная регламентация данного вида наказания отражается на правоприменительной практике. Для того, чтобы исполнение наказания в виде обязательных работ было наиболее эффективным для осужденного, в работе предложены соответствующие пути устранения выявленных проблем.
title: ПРЕДМЕТ ДОКАЗЫВАНИЯ: ОБСТОЯТЕЛЬСТВА, ПОДЛЕЖАЩИЕ УСТАНОВЛЕНИЮ ПРИ ПРОИЗВОДСТВЕ ПО УГОЛОВНЫМ ДЕЛАМ В ОТНОШЕНИИ НЕСОВЕРШЕННОЛЕТНИХ
Creators: name: Калпинская, Ольга
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье анализируются закрепленные в законодательстве требования по предмету доказывания по уголовным делам в отношении несовершеннолетних.