cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comprehensive Study of PID Mechanisms for n-Type Bifacial Solar Cells
Creators: name: Devoto, I.
name: Halm, A.
Publisher: name: WIP
Year: 2019
Subjects: Photovoltaic Modules and BoS Components
PV Module Design, Manufacture, Performance and Reliability

description: 36th European Photovoltaic Solar Energy Conference and Exhibition; 1106-1113
description: Potential induced degradation has been extensively studied for p-type cells, but not to this extend for ntype cells. This paper presents results allowing for deeper insights into the PID effect of different bifacial n-type solar cell concepts. Four n-type and one p-type (as a reference) solar cells were investigated. Mini-modules (1 cell) were fabricated with EVA for accelerated degradation tests with double glass or double transparent backsheet configuration. Modules were stressed applying ±1 kV at 85 °C in the darkness with no control of humidity (~5 % RH). Front and rear side of samples were characterized measuring current-voltage characteristics, internal quantum efficiency and reflection curves and taking electro-/photoluminescence images. We consistently observed PID-p degradation on (front and rear) n-doped layers applying +1 kV and recovery applying –1 kV. P-doped layers showed a mix of PID-p and PID-s mechanisms for both degradation and recovery. Recovery was not fully completed, except for nIBC with front floating emitter concept. PID-p degradation indicated accumulation of positive or negative charges within the passivation layer. Thus, Na+ ions migration from glass cannot completely explain PID-p mechanism.
Towards a WHAT-WHY-HOW Taxonomy of Trajectories in Visualization Research
Creators: name: Allain, Kevin
name: Turkay, Cagatay
name: Dykes, Jason
Publisher: name: The Eurographics Association
Year: 2019

description: Effective analysis of movement often requires a comprehensive approach where computational and visual methods are combined to address a wide variety of tasks involving movers with diverse characteristics. In order to help the process of designing effective methods for a wide range of movement analysis cases, we develop a provisional taxonomy that links what Brehmer et al. [BM13] term statements of WHY-WHAT-HOW with tasks, types of movers, context and methods used to compute or visualize data. Within this document we present the origin of this taxonomy, the process we followed to populate it, discuss the novel categories within it, and finally use it to explore relationships between elements of trajectory analysis. Our main contribution is to provide a new means of connecting elements of WHY-WHAT-HOW when analysing trajectories.
description: EuroVis 2019 - Posters
description: Posters
description: 5
description: 8
description: Kevin Allain, Cagatay Turkay, and Jason Dykes
ความสัมพันธ์ระหว่างระบบงบประมาณแบบมุ่งเน้นผลงานตามยุทธศาสตร์และกฎหมายว่าด้วยวิธีการงบประมาณ
Creators: name: นิโสรยา แวหะยี
Publisher: name: คณะนิติศาสตร์ มหาวิทยาลัยนเรศวร
Year: 2557
Subjects: ระบบงบประมาณแบบมุ่งเน้นผลงานตามยุทธศาสตร์, กระบวนการงบประมาณ, วินัยทางการคลัง

description: 2, 7, วารสารนิติศาสตร์ มหาวิทยาลัยนเรศวร
Visual-Interactive Exploration of Pathogen Outbreaks in Hospitals
Creators: name: Landesberger, Tatiana Von
name: Wunderlich, Marcel
name: Baumgartl, Tom
name: Höhn, Markus
name: Marschollek, Michael
name: Scheithauer, Simone
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Human
centered computing
Information visualization
Visual analytics

description: Clinicians and hygienists need to identify outbreaks and transmission patterns of pathogen infections among hospital patients. Such analysis requires the combination of the microbiological laboratory results with the location and contacts among patients. Currently, this is a cumbersome manual and time-consuming task that includes reading multiple textual reports. We present a visual-interactive interface that offers a set of linked visualizations for the identification of outbreaks and patient contacts. The evaluation of our interface with clinicians and hygienists has shown a high applicability for the task and ease of use.
description: EuroVis 2019 - Posters
description: Posters
description: 9
description: 11
description: Tatiana von Landesberger, Marcel Wunderlich, Tom Baumgartl, Markus Höhn, Michael Marschollek, and Simone Scheithauer
description: CCS Concepts: Human-centered computing --> Information visualization; Visual analytics
Interactive Hierarchical Quote Extraction for Content Insights
Creators: name: Knittel, Johannes
name: Koch, Steffen
name: Ertl, Thomas
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Human
centered computing
Visual analytics
Computing methodologies
Information extraction

description: This work presents a new approach to visually summarize large micro-document collections such as tweets. We extract frequent patterns of phrases as shortened quotes to present analysts an overview of popular snippets and statements, enabling more specific insights into large text collections compared to keyword-based visualizations. In our hierarchical structure, each quote can be the starting point to extract more fine-grained patterns on a subset of sentences that match the parent pattern. We show that our approach is scalable by applying it to millions of tweets.
description: EuroVis 2019 - Posters
description: Posters
description: 13
description: 15
description: Johannes Knittel, Steffen Koch, and Thomas Ertl
description: CCS Concepts: Human-centered computing --> Visual analytics;  Computing methodologies --> Information extraction
A unified theory of spin and charge excitations in high-$T_c$ cuprates: Quantitative comparison with experiment and interpretation
Creators: name: Fidrysiak, M.
name: Spałek, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We provide a unified interpretation of both paramagnon and plasmon modes in high-$T_c$ copper-oxides, and verify it quantitatively against available resonant inelastic $x$-ray scattering (RIXS) data across the hole-doped phase diagram. Three-dimensional extended Hubbard model, with included long-range Coulomb interactions and doping-independent microscopic parameters for both classes of quantum fluctuations, is used. Collective modes are studied using VWF+$1/\mathcal{N}_f$ approach which extends variational wave function (VWF) scheme by means of an expansion in inverse number of fermionic flavors ($1/\mathcal{N}_f$). We show that intense paramagnons persist along the anti-nodal line from the underdoped to overdoped regime and undergo rapid overdamping in the nodal direction. Plasmons exhibit a three-dimensional character, with minimal energy corresponding to anti-phase oscillations on neighboring $\mathrm{CuO_2}$ planes. The theoretical spin- and charge excitation energies reproduce semi-quantitatively RIXS data for $\mathrm{(Bi, Pb)_2 (Sr, La)_2 CuO_{6+δ}}$. The present VWF+$1/\mathcal{N}_f$ analysis of dynamics and former VWF results for static quantities combine into a consistent description of the principal properties of hole-doped high-$T_c$ cuprates as strongly correlated systems.
Real-Time Gaze Mapping in Virtual Environments
Creators: name: Kraus, Matthias
name: Kilian, Timon Urs
name: Fuchs, Johannes
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Human
centered computing
Virtual reality
General and reference
Design

description: In order to analyze an analyst's behavior in an immersive environment, his or her eye movements can be monitored using eye trackers. Hereby, points of individual interest can be objectively identified, for instance, to assess the usability and intuitiveness of a framework. However, this technique can be used not only as a post-event analysis tool but also to assist an ongoing exploration of a virtual environment. With this poster, we present a technique that allows a real-time gaze map creation which supports the immersed analyst by providing real-time feedback on the user's own activity. In our approach, all surfaces in the virtual environment are enwrapped with a mesh structure. The grid structure recognizes when a user drifts with his or her eyes above it and increments weights of activated node points. This allows highlighting areas that have been observed, but also those that have not been observed - also when they are occluded by other objects or surfaces. We tested our technique in a preliminary qualitative expert study and received helpful feedback for further improvements.
description: EuroVis 2019 - Posters
description: Posters
description: 17
description: 19
description: Matthias Kraus, Timon Urs Kilian, and Johannes Fuchs
description: CCS Concepts: Human-centered computing --> Virtual reality;  General and reference --> Design
Modeling the chemical evolution of Omega Centauri using three-dimensional hydrodynamical simulations
Creators: name: Marcolini, A.
name: Sollima, A.
name: D'Ercole, A.
name: Gibson, B. K
name: Ferraro, F. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a hydrodynamical and chemical model for the globular cluster Omega Cen, under the assumption that it is the remnant of an ancient dwarf spheroidal galaxy (dSph), the bulk of which was disrupted and accreted by our Galaxy ~10 Gyr ago. We highlight the very different roles played by Type II and Type Ia supernovae (SNe) in the chemical enrichment of the inner regions of the putative parent dSph. While the SNe II pollute the interstellar medium rather uniformly, the SNe Ia ejecta may remain confined inside dense pockets of gas as long as succesive SNe II explosions spread them out. Stars forming in such pockets have lower alpha-to-iron ratios than the stars forming elsewhere. Owing to the inhomogeneous pollution by SNe Ia, the metal distribution of the stars in the central region differs substantially from that of the main population of the dwarf galaxy, and resembles that observed in Omega Cen. This inhomogeneous mixing is also responsible for a radial segregation of iron-rich stars with depleted [alpha/Fe] ratios, as observed in some dSphs. Assuming a star formation history of ~1.5 Gyr, our model succeeds in reproducing both the iron and calcium distributions observed in Omega Cen and the main features observed in the empirical alpha/Fe versus Fe/H plane. Finally, our model reproduces the overall spread of the color-magnitude diagram, but fails in reproducing the morphology of the SGB-a and the double morphology of the main sequence. However, the inhomogeneous pollution reduces (but does not eliminate) the need for a significantly enhanced helium abundance to explain the anomalous position of the blue main sequence. Further models taking into account the dynamical interaction of the parent dwarf galaxy with the Milky Way and the effect of AGB pollution will be required.
description: 15 pages, 13 figures. MNRAS accepted
Parallel tracks in infrared versus X-ray emission in black hole X-ray transient outbursts: a hysteresis effect?
Creators: name: Russell, D. M.
name: Maccarone, T. J.
name: Koerding, E. G.
name: Homan, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a new hysteresis effect in black hole X-ray binary state transitions, that of the near-infrared (NIR) flux (which most likely originates in the jets) versus X-ray flux. We find, looking at existing data sets, that the infrared emission of black hole X-ray transients appears to be weaker in the low/hard state rise of an outburst than the low/hard state decline of an outburst at a given X-ray luminosity. We discuss how this effect may be caused by a shift in the radiative efficiency of the inflowing or outflowing matter, or variations in the disc viscosity or the spectrum/power of the jet. In addition we show that there is a correlation (in slope but not in normalisation) between infrared and X-ray luminosities on the rise and decline, for all three low-mass black hole X-ray binaries with well-sampled infrared and X-ray coverage: L_NIR propto L_x^(0.5-0.7). In the high/soft state this slope is much shallower; L_NIR propto Lx^(0.1-0.2), and we find that the NIR emission in this state is most likely dominated by the viscously heated (as opposed to X-ray heated) accretion disc in all three sources.
description: MNRAS accepted. 9 pages, 4 figures
Gwarancje procesowe na drodze administracyjnej i sądowoadministracyjnej realizacji zasady równego traktowania
Creators: name: Adamiak, Barbara
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2023

description: Zasada ogólna równego traktowania wiąże organy administracji publicznej w kształtowaniu sytuacji prawnej zarówno w zakresie uprawnień, jak i obowiązków jednostek. Dla jej realizacji niezbędne jest stworzenie możliwości obrony prawnej przez przyznanie prawa do zaskarżenia za pomocą środków prawnych. Gwarancje procesowe mają zatem zasadnicze znaczenie, pełniąc funkcje prewencyjne, a także represyjne. Prewencyjne tworzą bowiem element, który organ uwzględnia, aby uchylić się od skutków prawnych naruszenia prawa (np. związanych z roszczeniem odszkodowawczym). Represyjny, otwierając możliwość prawną wyeliminowania z obrotu prawnego niezgodnej z prawem decyzji.
Supporting Volumetric Data Visualization and Analysis by Combining Augmented Reality Visuals with Multi-Touch Input
Creators: name: Sereno, Mickael
name: Besançon, Lonni
name: Isenberg, Tobias
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Human
centered computing
Scientific visualization
Interaction techniques
Synchronous editors

description: We present our vision and steps toward implementing a collaborative 3D data analysis tool based on wearable Augmented Reality Head-Mounted Display (AR-HMD). We envision a hybrid environment which combines such AR-HMD devices with multi-touch devices to allow multiple collaborators to visualize and jointly discuss volumetric datasets. The multi-touch devices permit users to manipulate the datasets' states, either publicly or privately, while also proposing means for 2D input for, e. g., drawing annotations. The headsets allow each user to visualize the dataset in physically correct perspective stereoscopy, either in public or in their private space. The public space is viewed by all, with modifications shared in real-time. The private space allows each user to investigate the same dataset with their own preferences, for instance, with a different clipping range. The user can later decide to merge their private space with the public one or cancel the changes.
description: EuroVis 2019 - Posters
description: Posters
description: 21
description: 23
description: Mickael Sereno, Lonni Besançon, and Tobias Isenberg
description: CCS Concepts: Human-centered computing --> Scientific visualization; Interaction techniques; Synchronous editors
Extending the Ehresmann-Schein-Nambooripad Theorem
Creators: name: Hollings, Christopher
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 20M18; 20L05; 20M15

description: We extend the `join-premorphisms' part of the Ehresmann-Schein-Nambooripad Theorem to the case of two-sided restriction semigroups and inductive categories, following on from a result of Lawson (1991) for the `morphisms' part. However, it is so-called `meet-premorphisms' which have proved useful in recent years in the study of partial actions. We therefore obtain an Ehresmann-Schein-Nambooripad-type theorem for meet-premorphisms in the case of two-sided restriction semigroups and inductive categories. As a corollary, we obtain such a theorem in the inverse case.
description: 23 pages; final section on Szendrei expansions removed; further reordering of material
Zasada równości wobec prawa a wykluczenie osób bezdomnych z dostępu do świadczeń pomocy społecznej
Creators: name: Cendrowicz, Dominika
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2023

description: Publikacja podejmuje zagadnienie równości wobec prawa na tle problematyki prawnej wykluczenia osób bezdomnych z dostępu do świadczeń z zakresu pomocy społecznej. W publikacji omówione zostanie pojęcie osoby bezdomnej, a także zostaną wyodrębnione i poddane analizie podstawowe obszary wykluczenia tych osób z dostępu do świadczeń z zakresu ustawy z dnia 12 marca 2004 r. o pomocy społecznej. Sformułowane zostaną wnioski na temat postulowanych zmian prawa w obszarze możliwości korzystania przez osoby bezdomne ze świadczeń z zakresu pomocy społecznej.
Two new alkaloids from the sepals of Solanum melongena L
Creators: name: Zhao, Dong-Ying
name: Liu, Yan
name: Yin, Xin
name: Li, Xiao-Mao
name: Pan, Juan
name: Guan, Wei
name: Yang, Bing-You
name: Kuang, Hai-Xue
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Hematology

description: Two new alkaloids named Melongenamides H-I (1–2), together with twenty-one known compounds (3–23), were isolated from the 70% ethanol extract of the sepals of Solanum melongena L. The structures of all isolated compounds were determined by 1D and 2D NMR spectra and by comparing their spectroscopic and physical data with values from the published literatures. All the isolated compounds were evaluated the cytotoxicity against three human canner lines (Hela, Ishikawa and MGC-803) by CCK8 assay.
Coherence Protection of Electron Spin in Earth-field Range by All-optical Dynamic Decoupling
Creators: name: Yang, Peiyu
name: Bao, Guzhi
name: Chen, L. Q.
name: Zhang, Weiping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In recent years, unshielded atomic systems have been attracting researchers' attention, in which decoherence is one of the major problems, especially for high precision measurements. The nonlinear Zeeman effect and magnetic field gradient are the main decoherence sources of atomic electron spin in Earth-field range. Here, we propose a method to cancel out the two dominant broadening effects simultaneously by an all-optical dynamic decoupling approach based on Raman scattering in the 87Rb Zeeman sublevels. By adjusting the parameters of the Raman lasers, we realize spin control along an arbitrary direction. We analyze the state evolution of atomic spin under the Raman light control sequence in detail. The results show that both the nonlinear Zeeman effect and magnetic field gradient can be significantly suppressed.
Arbitrary-order finite-time corrections for the Kramers-Moyal operator
Creators: name: Gorjão, Leonardo Rydin
name: Witthaut, Dirk
name: Lehnertz, Klaus
name: Lind, Pedro G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: With the aim of improving the reconstruction of stochastic evolution equations from empirical time-series data, we derive a full representation of the generator of the Kramers-Moyal operator via a power-series expansion of the exponential operator. This expansion is necessary for deriving the different terms in a stochastic differential equation. With the full representation of this operator, we are able to separate finite-time corrections of the power-series expansion of arbitrary order into terms with and without derivatives of the Kramers-Moyal coefficients. We arrive at a closed-form solution expressed through conditional moments, which can be extracted directly from time-series data with a finite sampling intervals. We provide all finite-time correction terms for parametric and non-parametric estimation of the Kramers-Moyal coefficients for discontinuous processes which can be easily implemented - employing Bell polynomials - in time-series analyses of stochastic processes. With exemplary cases of insufficiently sampled diffusion and jump-diffusion processes, we demonstrate the advantages of our arbitrary-order finite-time corrections and their impact in distinguishing diffusion and jump-diffusion processes strictly from time-series data.
description: 15 pages, 2 figues
The fourth family: a simple explanation for the observed pattern of anomalies in B-CP asymmetries
Creators: name: Soni, Amarjit
name: Alok, Ashutosh Kumar
name: Giri, Anjan
name: Mohanta, Rukmani
name: Nandi, Soumitra
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that a fourth family of quarks with $m_{t'}$ in the range of (400 - 600) GeV provides a rather simple explanation for the several indications of new physics that have been observed involving CP asymmetries of the b-quark. The built-in hierarchy of the 4$\times$4 mixing matrix is such that the $t'$ readily provides a needed {\it perturbation} ($\approx 15%$) to $\sin 2 β$ as measured in $B \to ψK_s$ and simultaneously is the dominant source of CP asymmetry in $B_s \to ψϕ$. The correlation between CP asymmetries in $B_s \toψϕ$ and $B_d\toϕK_s$ suggests $m_{t'} \approx$ (400 - 600) GeV. Such heavy masses point to the tantalizing possibility that the 4th family plays an important role in the electroweak symmetry breaking.
description: 6 pages, 2 figures; v4: Updated version to appear in Phys LettB; minor changes (including the title) & few refs. added
Gaussian Process and Levy Walk under Stochastic Non-instantaneous Resetting and Stochastic Rest
Creators: name: Zhou, Tian
name: Xu, Pengbo
name: Deng, Weihua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A stochastic process with movement, return, and rest phases is considered in this paper. For the movement phase, the particles move following the dynamics of Gaussian process or ballistic type of Lévy walk, and the time of each movement is random. For the return phase, the particles will move back to the origin with a constant velocity or acceleration or under the action of a harmonic force after each movement, so that this phase can also be treated as a non-instantaneous resetting. After each return, a rest with a random time at the origin follows. The asymptotic behaviors of the mean squared displacements with different kinds of movement dynamics, random resting time, and returning are discussed. The stationary distributions are also considered when the process is localized. Besides, the mean first passage time is considered when the dynamic of movement phase is Brownian motion.
description: 16 pages, 13 figures
Visual Ensemble Analysis to Study the Influence of Hyper-parameters on Training Deep Neural Networks
Creators: name: Hamid, Sagad
name: Derstroff, Adrian
name: Klemm, Sören
name: Ngo, Quynh Quang
name: Jiang, Xiaoyi
name: Linsen, Lars
Publisher: name: The Eurographics Association
Year: 2019

description: A good deep neural network design allows for efficient training and high accuracy. The training step requires a suitable choice of several hyper-parameters. Limited knowledge exists on how the hyper-parameters impact the training process, what is the interplay of multiple hyper-parameters, and what is the interrelation of hyper-parameters and network topology. In this paper, we present a structured analysis towards these goals by investigating an ensemble of training runs.We propose a visual ensemble analysis based on hyper-parameter space visualizations, performance visualizations, and visualizing correlations of topological structures. As a proof of concept, we apply our approach to deep convolutional neural networks.
description: Machine Learning Methods in Visualisation for Big Data
description: Papers
description: 19
description: 23
description: Sagad Hamid, Adrian Derstroff, Sören Klemm, Quynh Quang Ngo, Xiaoyi Jiang, and Lars Linsen
The role of family environment in an ecological study of preschool children attending family day care
Creators: name: Shapiro, Ellen Sara
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is an exploratory ecological study of the role of the family environment as it relates to a number of variables under investigation in the Vancouver Day Care Research Project's extensive contextual study of children enrolled in family day care settings. These variables include child language scores, indices of socio-economic status, conditions of maternal employment and attitudes related to maternal employment, other measures of the home environment, and parental attitudes to childrearing. In addition, the family environments of the family day care caregivers were examined in relation to the quality of care provided. The Moos Family Environment Scale (1986) was administered to parents and caregivers enrolled in the study. Scores from its ten subscales were correlated with measures of the variables of interest and then tested for significance. Data was then analyzed for important trends, patterns and highlights. Results showed that exposure of family members to stimulating ideas and activities is facilitative of child language skills, while an emphasis on achievement seems to have a negative effect. Families from higher socio-economic status homes seemed to be more likely to provide these opportunities for their children, particularly if they are well-educated. Findings also indicate that mothers who are satisfied with their employment tend to provide more positive family environments for their children than those who are working reluctantly. Mothers who worked part-time also appeared to provide better family environments than did those who experienced the increased stress of full-time employment. Adult-centered parenting values which stressed obedience were associated with family environments which were less facilitative of child cognitive development, whereas homes with child-centered parenting values appeared to be more positive. Family day care caregivers who provided superior childcare were found to be more organized in their own families, more supportive of one another, and more able to allow their family members to function independently than were other caregivers. There was considerable overlap in the results for each variable of interest; many similar features were found in the environments which were considered optimal in terms of language development, socio-economic factors, conditions of maternal employment, attitudes to childrearing, and high quality care for children. The study results strongly support the importance of exposure to a wide range of intellectual and cultural stimuli, participation in activities outside the home, expression of feelings amongst family members, and well-organized family functioning in the creation of optimal family environments; an emphasis on achievement, and the use of rigid rules and doctrine were found to be deleterious to the creation of positive home environments.
Geometry of multi-particle systems with a relativistic deformed kinematics and the relative locality principle
Creators: name: Relancio, J. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: There is a vast literature showing the connection between a deformed relativistic kinematics and a curved momentum space, and, in particular, how the former can be obtained from the geometrical properties of the latter. However, there is not any mention about the geometry of a multi-particle system making manifest a possible modification in the metric of one particle due to the presence of others. In this work we explore how a curved momentum metric depending on the particles involved in an interaction arises when considering a process. We also show that the principle of relative locality obtained in doubly special relativity from an action is achieved in this geometrical framework in a direct fashion. Moreover, this formalism allows us to generalize this principle when a curvature of spacetime is present in a natural way. Furthermore this geometrical setup allows us to define a new momentum dependent space-time coordinates for a multi-particle system in which locality of interactions is recovered.
description: 14 pages
Multifunctional Coated Composite Material for Encapsulation of Photovoltaic Devices
Creators: name: Yurrita, N.
name: Aizpurua, J.
name: Vega De Seoane, J.M.
name: Imbuluzketa, G.
name: Arrizabalaga, I.
name: Cambarau, W.
name: Cano, F.J.
name: Zubillaga, O.
Publisher: name: WIP
Year: 2019
Subjects: New Materials and Concepts for Photovoltaic Devices
New Materials and Concepts for Cells and Modules

description: 36th European Photovoltaic Solar Energy Conference and Exhibition; 87-89
description: Glass fiber reinforced composite materials are widely used in various industrial fields due to their combination of low density and high mechanical performance. When presenting an acceptable transparency degree, they offer an alternative encapsulant protective support for photovoltaic modules. In this work, the photovoltaic cells were encapsulated by vacuum resin infusion process and afterwards the modules were coated with the aim to enhance the optical properties, the abrasion performance and the surface contact angle. The short-circuit current was calculated from the external quantum efficiency (EQE) data, observing an improvement of 1% in coated modules with respect to non-coated ones. An increase of the surface contact angle with respect to the bare composite was observed after coating, rendering the module surface hydrophobic. Regarding the abrasion resistance, the contact angle and EQE measurements showed that the coating was damaged gradually. After 1500 Taber cycles, the contact angle of the coated composite decreased up to the value of the bare composite, whereas the short-circuit current value was kept in higher values. This last performance was found to be related with surface roughness, observing lower short-circuit current values as the roughness increases.
Uderground Pumped-Hydro Energy Storage Using Carbon Dioxide in Shallow Lined Rock Caverns; Application to Long-Duration Storage as The Energy Conversion of a Pumped Thermal Electricity Storage
Creators: name: Lalanne, P.
name: Byrne, P.
Publisher: name: WIP
Year: 2019
Subjects: PV Systems and Storage – Modelling, Design, Operation and Performance
Storage

description: 36th European Photovoltaic Solar Energy Conference and Exhibition; 1532-1542
description: A fast-paced energy transition needs a better penetration of renewables, of heating and of cooling in the worldwide energy mix. With three novelties 1 – of using shallow high-pressure LRC (Lined Rock Cavern) excavated close to storage needs, 2 - of using a slow-moving CO2 piston applying constant pressure on the hydro part of UPHES (Underground Pumped Hydro Energy Storage) and 3 - of relying on inexpensive thermal stores for the longduration storage of electricity, CO2 UPHES coupled with PTES (Pumped Thermal Electricity Storage) could become a game-changer by allowing the complete integration of intermittent renewable sources. The RTE of the latter system, devoid of the 4 gas machineries of conventional PTES, is targeted to 60-70% and its Capex cost for pure electricity storage is calculated at 2160 USD/kW + 10 USD/kWh (meaning a compounded Capex of 20 USD/kWh only). Thanks to an attractive COP of heat displacement, expected to reach 10 depending on required temperatures, the CO2 UPHES as well as UPHES-PTES hybrid storage could also allow a low cost, low investment (compounded Capex of 4 USD/kWh) and low-emission integration of intermittent renewables with future district heating and cooling networks.
Slides for: PART 1: Impact of Customer Actions on the Distribution Grid
Creators: Doug Houseman
Publisher: name: IEEE
Year: 2022

Slides for PART 1: Impact of Customer Actions on the Distribution Grid

The presentation draws from a large data set of actual North American Distribution Circuits and Substations to look at what happens and what is needed to make the energy transition. The underlying model has the ability to scale on a circuit by circuit basis solar PV, building electrification, energy storage, demand response, and electric vehicles. The presentation will focus on the “end state” of electrification in 2050.
TCN-based DDoS detection and mitigation in 5G healthcare-IoT: a frequency monitoring and dynamic threshold approach
Creators: name: Akhi, Mirza
name: Eising, Ciarán
name: Dhirani, Lubna Luxmi
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 40
subject: Engineering

description: The Internet of Things (IoT) revolutionizes precision healthcare by enhancing patient care and reducing costs. However, this technology poses challenges in securing Healthcare-IoT (H-IoT) devices, as low-latency packet transmission increases vulnerability to attacks (e.g., Distributed Denial of Service (DDoS)) in 5G networks. This research develops a monitoring frequency-based detection and dynamic threshold mitigation method using Temporal Convolutional Networks (TCNs) in 5G H-IoT environments. A monitoring frequency-based detection method calculates each H-IoT node’s message count over the past five seconds as a percentage of total traffic. A dynamic threshold strategy also provides adaptive security by averaging detected malicious behavior messages across all nodes to determine the base threshold. This approach enhances classification accuracy, effectively mitigates actual DDoS attack nodes, and blacklists malicious nodes without false positives in H-IoT environments. Moreover, this research creates DDoS attack models, monitoring parameters using two simulators (Cooja and ns-3) on H-IoT devices. Data is collected over the Message Queuing Telemetry Transport (MQTT) and User Datagram Protocol (UDP) in a realistic 5G-based H-IoT environment, creating two datasets with malicious and benign data. The proposed TCN-based DDoS prediction and mitigation method achieves 99.98% and 95% accuracy on the MQTT dataset. This model also attains a slightly higher prediction accuracy of 99.99% and mitigation of 80% on the UDP dataset. This research evaluates the proposed model against prior methods, including Bidirectional Long Short-Term Memory (BiLSTM) and Convolutional Neural Networks (CNNs), demonstrating improved accuracy. Thus, the proposed TCN model is a versatile and resilient security solution for H-IoT environments.
Conductance suppression by nonmagnetic point defects in helical edge channels of two-dimensional topological insulators
Creators: name: Sablikov, Vladimir A.
name: Sukhanov, Aleksei A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study backscattering of electrons and conductance suppression in a helical edge channel in two-dimensional topological insulators with broken axial spin symmetry in the presence of nonmagnetic point defects that create bound states. In this system the tunneling coupling of the edge and bound states results in the formation of composite helical edge states in which all four partners of both Kramers pairs of the conventional helical edge states and bound states are mixed. The backscattering is considered as a result of inelastic two-particle scattering of electrons, which are in these composite states. Within this approach we find that sufficiently strong backscattering occurs even if the defect creates only one energy level. The effect is caused by electron transitions between the composite states with energy near the bound state level. We study the deviation from the quantized conductance due to scattering by a single defect as a function of temperature and Fermi level. The results are generalized to the case of scattering by many different defects with energy levels distributed over the band gap. In this case, the conductance deviation turns out to be quite strong and comparable with experiment even at a sufficiently low density of defects. Interestingly, under certain conditions, the temperature dependence of the conductance deviation becomes very weak over a wide temperature range.
description: 15 pages, 8 figures
Polarized emission lines from A- and B-type excitonic complexes in single InGaN/GaN quantum dots
Creators: name: Winkelnkemper, M.
name: Seguin, R.
name: Rodt, S.
name: Schliwa, A.
name: Reissmann, L.
name: Strittmatter, A.
name: Hoffmann, A.
name: Bimberg, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cathodoluminescence measurements on single InGaN/GaN quantum dots (QDs) are reported. Complex spectra with up to five emission lines per QD are observed. The lines are polarized along the orthogonal crystal directions [1 1 -2 0] and [-1 1 0 0]. Realistic eight-band k.p electronic structure calculations show that the polarization of the lines can be explained by excitonic recombinations involving hole states which are either formed by the A or the B valence band.
description: accepted at Journal of Applied Physics
New Results on SiGeSn MOVPE Grown for Multi-Junction Solar Cells
Creators: name: Timò, G.
name: Abagnale, G.
name: Calicchio, M.
name: Cornelli, M.
name: Armani, N.
name: Trespidi, F.
name: Malvisi, E.
name: Achilli, E.
name: Annoni, F.
name: Schineller, B.
name: Siefer, G.
name: Couderc, R.
Publisher: name: WIP
Year: 2019
Subjects: Perovskites, other Non-Silicon-Based Photovoltaics and Multi-Junction Devices
III-V and Related Compound Semiconductor Based Devices

description: 36th European Photovoltaic Solar Energy Conference and Exhibition; 699-703
description: New results concerning SiGeSn deposited by MOVPE in the same growth chamber utilized for III-V deposition are reported. The ternary material has been grown on 4 and 6 inch germanium wafers, tin precipitation free, at relatively high growth temperature (490°C), with Disilane, Tin-tetrachloride and Germane as gas precursors. The SiGeSn layers have been characterized by high-resolution X-ray diffraction, Scanning Electron Microscopy, Secondary Ion Mass Spectroscopy and Electrochemical Capacitance-Voltage measurements. GaAs(N) filtered InGaP(N)/SiGeSn(N)/Ge(P) heterojunction functional devices have been manufactured and characterized by External Quantum Efficiency, Current-Voltage and Electroluminescence measurements. A Round-Robin campaign on the electrical parameters measured at different concentration factors has been carried out in order to validate the electrical data. The measured and simulated current densities of the functional devices have allowed ascertaining the potentiality of a successful integration of MOVPE grown SiGeSn ternary material in III-V Multi-junction structures
Strings in SU(N) gauge theories in 2+1 dimensions: beyond the fundamental representation
Creators: name: Bringoltz, Barak
name: Teper, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate energies and tensions of closed k-strings in (2+1)-dimensional SU(N) gauge theories with N=4,5,6,8. When we study the dependence of the ground state energy on the string length, we find that it is well described by a Nambu-Goto (NG) free bosonic string for large lengths. At shorter lengths we see deviations which we fit, and this allows us to control the systematic error involved in extracting the tension. We compare the resulting string tensions with Casimir scaling, which we find to be lower than our data by 1%-4%. Extrapolating our results to N=oo we see that our data fits more naturally to 1/N rather than 1/N^2 corrections. Finally, we see that the full spectrum of the k-string states falls into sectors that belong to particular irreducible representations of SU(N).
description: 7 pages, 8 figures, Presented by BB at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany
Extreme adaptive optics astrometry of R136. Searching for high proper motion stars
Creators: name: Khorrami, Zeinab
name: Langlois, M.
name: Vakili, F.
name: Clark, P. C.
name: Buckner, A. S. M.
name: Gonzalez, M.
name: Crowther, P.
name: Wunsch, R.
name: Palous, J.
name: Boccaletti, A.
name: Lumsden, S.
name: Moraux, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We compared high-contrast near-infrared images of the core of R136 taken by VLT/SPHERE, in two epochs separated by 3.06 years. For the first time we monitored the dynamics of the detected sources in the core of R136 from a ground-based telescope with adaptive optics. The aim of these observations was to search for High prOper Motion cAndidates (HOMAs) in the central region of R136 (r<6") where it has been challenging for other instruments. Two bright sources (K<15mag and V<16mag) are located near R136a1 and R136c (massive WR stars) and have been identified as potential HOMAs. These sources have significantly shifted in the images with respect to the mean shift of all reliable detected sources and their neighbours, and six times their own astrometric errors. We calculate their proper motions to be 1.36\pm0.22 mas/yr (321\pm52 km/s) and 1.15\pm0.11 mas/yr (273\pm26 km/s). We discuss different possible scenarios to explain the magnitude of such extreme proper motions, and argue for the necessity to conduct future observations to conclude on the nature of HOMAs in the core of R136.
description: Accepted to be published in A&A/Letter. catalogue of the reliable-consistent sources are available online via CDS
Quantum Non-locality and Partial Transposition for Continuous-Variable Systems
Creators: name: Salles, Alejo
name: Cavalcanti, Daniel
name: Acín, Antonio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A continuous-variable Bell inequality, valid for an arbitrary number of observers measuring observables with an arbitrary number of outcomes, was recently introduced in [Cavalcanti \emph{et al.}, Phys. Rev. Lett. {\bf 99}, 210405 (2007)]. We prove that any $n$-mode quantum state violating this inequality with quadrature measurements necessarily has a negative partial transposition. Our results thus establish the first link between nonlocality and bound entanglement for continuous-variable systems.
description: 4 pages, no figures; reference added, minor changes, close to published version
Jurydyczny egalitaryzm a prawnopolityczny realizm
Creators: name: Ławniczak, Artur
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2023

description: W postfeudalnych czasach rozprzestrzenił się w ideosferze Starego Kontynentu dogmat równości wobec prawa, zgodny z demoliberalnym przesłaniem porewolucyjnej epoki. Jednakowoż na polskim przykładzie widać, że nie jest on bynajmniej w 100% realizowany. Wszak jego konsekwentne aplikowanie w prawnopolitycznej rzeczywistości powinno skutkować obowiązywaniem jednakowych przepisów dla wszystkich, tymczasem istnieją przecież immunitety, co oznacza, że osoby sprawujące w państwie ważne stanowiska lub funkcje są lepiej chronione „ze względu na szczególne znaczenie dla Dobra Wspólnego” przed potencjalnym ponoszeniem odpowiedzialności za niewłaściwe czyny. Poza tym warto przypomnieć, że przy konsekwentnie radykalnym rozumieniu jurydycznego radykalizmu niewskazane jest istnienie instytucjonalnego zróżnicowania czy też pluralizmu w sferze trzeciej władzy, z którym jak najbardziej mamy nad Wisłą do czynienia. Ergo występuje zjawisko różnych praw dla obywateli, egzekwowanych przez nieujednolicone sądownictwo, z czego wynika, że sformalizowany elitaryzm bynajmniej nie zniknął, tyle że przyjął nieco inną postać niż przed rozpanoszeniem się ludowładztwa.
A Visual Encoding System for Comparative Exploration of Magnetic Resonance Spectroscopy Data
Creators: name: Garrison, Laura
name: Vasicek, Jakub
name: Grüner, Renate
name: Smit, Noeska Natasja
name: Bruckner, Stefan
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Human
centered computing
Scientific visualization
Information visualization
User centered design

description: Magnetic resonance spectroscopy (MRS) allows for assessment of tissue metabolite characteristics used often for early detection and treatment evaluation of intracranial pathologies. In particular, this non-invasive technique is important in the study of metabolic changes related to brain tumors, strokes, seizure disorders, Alzheimer's disease, depression, as well as other diseases and disorders affecting the brain. However, meaningful variations in ratios of tissue metabolites within a sample area are difficult to capture with current visualization tools. Furthermore, the learning curve to interpretation is steep and limits the more widespread adoption of MRS in clinical practice. In this work we present a novel, tiered visual encoding system for multidimensional MRS data to aid in the visual exploration of metabolite concentration ratios. Our system was developed in close collaboration with domain experts including detailed data and task analyses. This visual encoding system was subsequently realized as part of an interactive insight-generation tool for rapid exploration and comparison of metabolite ratio variation for deeper insights to these complex data.
description: EuroVis 2019 - Posters
description: Posters
description: 25
description: 27
description: Laura Garrison, Jakub Vasicek, Renate Grüner, Noeska Natasja Smit, and Stefan Bruckner
description: CCS Concepts: Human-centered computing --> Scientific visualization; Information visualization; User centered design
Gravitational partition function modified by super-light brane world perturbative modes
Creators: name: Hameeda, M.
name: Pourhassan, B.
name: Rocca, M. C.
name: Brzo, A. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we will analyze the effects of super-light brane world perturbative modes on clustering of galaxies. In present manuscript, we use the Boltzmann and Tsallis statistical approaches to study the large distance modification of gravity in the brane world. The impact of modified potential on clustering of galaxies is analyzed in both the approaches. The infinities associated with Newtonian point mass approximation of gravity models is removed using the analytical extensions. The regularized and finite partition function is obtained for the system of galaxies in the brane world model and is used to evaluate the regularized thermodynamic properties of the system in the form of equations of state. Hence, we study thermodynamic quantities and discuss about the thermodynamic stability of the model. We find that large number of galaxies may lead to the thermodynamic instability.
description: See published version on Phys. Rev. D