cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The subjective difficulty of spatial ability tests
Creators: name: Schroeder, Klaus Gerhard
Publisher: name: University of British Columbia
Year: 2010

description: Tests of Spatial Orientation (Card Rotations, Cube Comparisons) and Visualization (Form Board, Paper Folding, Surface Development) were administered to 537 (266 men, 268 women) university students. Participants rated the perceived difficulty of each of the tests on a 9 point scale ranging from 1 = very easy to 9 = very difficult. They were asked to indicate which of six problem solving strategies they used to solve the items on any particular test. The strategy statements were designed to tap part or whole problem solving strategies. Part strategies involved concentrating on salient aspects of a stimulus while whole strategies involved concentrating on an entire stimulus. Since men scored higher than women on all five tests analyses were performed separately for the sexes. For both men and women the first principal component accounted for more than 50% of the variance. Thus, previous findings of two spatial factors for men and one spatial factor for women were not supported. Problem solving strategy did not relate to performance on the spatial tests nor to difficulty ratings. There were no consistent sex differences in strategy except that women indicated that they guessed more on all tests. The limitations of introspective reports were discussed. For both men and women the perceived difficulty of a particular test correlated more highly with the total score on that test than with the total score on any other test. On the basis of this finding it was concluded that the difficulty index is a valuable one worthy of further study. The finding that men and women did not differ on mean difficulty rating on three of the tests, even though they differed significantly in performance on all tests, was interpreted to mean that each person subjectively rank orders the tests in terms of difficulty. It was hypothesized that the perceived difficulty of a test is, therefore, a function of the other tests included for study. There was moderate support for the hypothesis that, as the difference in rated difficulty for pairs of tests increases, the correlation between the two decreases. This was the case for six of 10 comparisons for men and three of 10 comparisons for women. It was suggested that this hypothesis would receive stronger support if tests of more distinct abilities were included in the same study.
Park4U Mate: Context-Aware Digital Assistant for Personalized Autonomous Parking
Creators: name: Musabini, Antonyo
name: Bozbayir, Evin
name: Marcasuzaa, Hervé
name: Ramírez, Omar Adair Islas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: People park their vehicle depending on interior and exterior contexts. They do it naturally, even unconsciously. For instance, with a baby seat on the rear, the driver might leave more space on one side to be able to get the baby out easily; or when grocery shopping, s/he may position the vehicle to remain the trunk accessible. Autonomous vehicles are becoming technically effective at driving from A to B and parking in a proper spot, with a default way. However, in order to satisfy users' expectations and to become trustworthy, they will also need to park or make a temporary stop, appropriate to the given situation. In addition, users want to understand better the capabilities of their driving assistance features, such as automated parking systems. A voice-based interface can help with this and even ease the adoption of these features. Therefore, we developed a voice-based in-car assistant (Park4U Mate), that is aware of interior and exterior contexts (thanks to a variety of sensors), and that is able to park autonomously in a smart way (with a constraints minimization strategy). The solution was demonstrated to thirty-five users in test-drives and their feedback was collected on the system's decision-making capability as well as on the human-machine-interaction. The results show that: (1) the proposed optimization algorithm is efficient at deciding the best parking strategy; hence, autonomous vehicles can adopt it; (2) a voice-based digital assistant for autonomous parking is perceived as a clear and effective interaction method. However, the interaction speed remained the most important criterion for users. In addition, they clearly wish not to be limited on only voice-interaction, to use the automated parking function and rather appreciate a multi-modal interaction.
description: Accepted at 2021 IEEE Intelligent Vehicles Symposium - IV (matching camera-ready version)
Noncommutative generalization of SU(n)-principal fiber bundles: a review
Creators: name: Masson, Thierry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This is an extended version of a communication made at the international conference ``Noncommutative Geometry and Physics'' held at Orsay in april 2007. In this proceeding, we make a review of some noncommutative constructions connected to the ordinary fiber bundle theory. The noncommutative algebra is the endomorphism algebra of a SU(n)-vector bundle, and its differential calculus is based on its Lie algebra of derivations. It is shown that this noncommutative geometry contains some of the most important constructions introduced and used in the theory of connections on vector bundles, in particular, what is needed to introduce gauge models in physics, and it also contains naturally the essential aspects of the Higgs fields and its associated mechanics of mass generation. It permits one also to extend some previous constructions, as for instance symmetric reduction of (here noncommutative) connections. From a mathematical point of view, these geometrico-algebraic considerations highlight some new point on view, in particular we introduce a new construction of the Chern characteristic classes.
title: Geschlecht anders erforschen – mit erlebensbezogenen Interviews
Creators: name: Jäger, Ulle
name: König, Tomke
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2017

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 6 (2017)
Synthetic Harmonic Distance Relaying for Inverter-Based Islanded Microgrids
Creators: Khaled A. Saleh and Mahmoud A. Allam
Publisher: name: IEEE
Year: 2021

This paper addresses the shortcomings of conventional protection schemes in islanded inverter-based microgrids by proposing a new synthetic harmonic distance relaying scheme with line reactance magnifiers.
Faults in inverter-based islanded microgrids can be a formidable protection challenge due to (i) low fault current magnitudes, (ii) compromised fault current phase angles, and (iii) bidirectional flow of fault currents. This paper proposes a protection scheme that disregards the fault signals altogether. Instead, it relies on decoupled synthesized signals introduced only during fault conditions. This scheme is achieved by exploiting the existing inverter-based distributed generation (IBDG) controllers to inject synthetic harmonic voltages and currents. These synthetic signals are measured locally by digital relays in the microgrid to develop a novel synthetic harmonic distance relay (SHDR). Apart from the utilization of high-order harmonic signals that enhance SHDR reactance reach, further reach improvement is achieved via the introduction of line reactance magnifiers (LRMs). Transient studies in PSCAD/EMTDC verify the performance of the proposed scheme under various faults, contingencies, and different microgrid configurations.
Symbolic Regression by Exhaustive Search: Reducing the Search Space Using Syntactical Constraints and Efficient Semantic Structure Deduplication
Creators: name: Kammerer, Lukas
name: Kronberger, Gabriel
name: Burlacu, Bogdan
name: Winkler, Stephan M.
name: Kommenda, Michael
name: Affenzeller, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Symbolic regression is a powerful system identification technique in industrial scenarios where no prior knowledge on model structure is available. Such scenarios often require specific model properties such as interpretability, robustness, trustworthiness and plausibility, that are not easily achievable using standard approaches like genetic programming for symbolic regression. In this chapter we introduce a deterministic symbolic regression algorithm specifically designed to address these issues. The algorithm uses a context-free grammar to produce models that are parameterized by a non-linear least squares local optimization procedure. A finite enumeration of all possible models is guaranteed by structural restrictions as well as a caching mechanism for detecting semantically equivalent solutions. Enumeration order is established via heuristics designed to improve search efficiency. Empirical tests on a comprehensive benchmark suite show that our approach is competitive with genetic programming in many noiseless problems while maintaining desirable properties such as simple, reliable models and reproducibility.
description: Genetic and Evolutionary Computation
A primer on the differential geometry of quaternionic curves
Creators: name: Giardino, Sergio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper describes the foundations of a differential geometry of a quaternionic curves. The Frenet-Serret equations and the evolutes and evolvents of a particular quaternionic curve are accordingly determined. This new formulation takes benefit of the quaternionic structure and the results are much simpler than the present formulations of quaternionic curves.
description: Accept by Mathematical Methods in the Applied Sciences
Mass formula for self-orthogonal codes over Z_{p^2}
Creators: name: Betty, Rowena A. L.
name: Munemasa, Akihiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 94B05

description: In this note, we establish a mass formula for self-orthogonal codes over Z_{p^2}, where p is a prime. As a consequence, an alternative proof of the known mass formulas for self-dual codes over Z_{p^2} is obtained. We also establish a mass formula for even quaternary codes, which includes a mass formula for Type II quaternary codes as a special case.
description: 18 pages; 17 pages, An error in Theorem 5.7, and some minor typographic changes have been made
title: Vernetzungstreffen Gender Studies NRW
Creators: name: Wrede, Birgitta
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2017

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 6 (2017)
Incidence of the boundary shape in the effective theory of fractional quantum Hall edges
Creators: name: Cabra, D. C.
name: Grandi, N. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from a microscopic description of a system of strongly interacting electrons in a strong magnetic field in a finite geometry, we construct the boundary low energy effective theory for a fractional quantum Hall droplet taking into account the effects of a smooth edge. The effective theory obtained is the standard chiral boson theory (chiral Luttinger theory) with an additional self-interacting term which is induced by the boundary. As an example of the consequences of this model, we show that such modification leads to a non-universal reduction in the tunnelling exponent which is independent of the filling fraction. This is in qualitative agreement with experiments, that systematically found exponents smaller than those predicted by the ordinary chiral Luttinger liquid theory.
description: 12 pages, minor changes, replaced by published version
Relativistic Quantum Communication: Energy cost and channel capacities
Creators: name: Barcellos, Ian Bernardes
name: Landulfo, Andre G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the communication of classical and quantum information between two arbitrary observers in asymptotically flat spacetimes (possibly containing black holes) and investigate what is the energy cost for such information transmission. By means of localized two-level quantum systems, sender and receiver can use a quantum scalar field as a communication channel. As we have already shown in a previous paper, such a channel has non-vanishing classical capacity as well as entanglement-assisted classical and quantum capacities. Here we will show that the change in the expectation value of the energy of the system during the communication process can be separated in: (i) a contribution coming from the particle creation due to the change of the spacetime, (ii) a contribution associated with the energy needed to switch-on/off each qubit, and {\bf (iii)} a term which comes from the communication process itself. For the quantum channel considered here, we show that the extra energy cost needed for communication vanishes. As a result, if one has already created a system of qubits for some specific task (e.g., quantum computation) one can also reliably convey information between its parts with no extra energy cost. We conclude the paper by illustrating the form of the channel capacities and energy contributions in two paradigmatic cases in Minkowski spacetime: (1) sender and receiver in inertial motion and (2) sender in inertial motion while the receiver is uniformly accelerated.
description: 15 pages, 5 figures
title: Editorial
Creators: name: Wrede, Birgitta
name: Box, Marijke
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2018

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 7 (2018)
Slides for: SSO/SSR Detection, Modeling and Analysis in a Smart Grid
Creators: Dr M V Chilukuri
Publisher: name: IEEE
Year: 2021

Slides for the webinar SSO/SSR Detection, Modeling and Analysis in a Smart Grid
Subsynchronous Oscillations/Resonance (SSO/SSR) is a very important phenomenon in Wind Energy Integration to Smart Grid. Since 2009, there were several SSO events causing damage to the wind turbines across the world. The increase in integration of wind energy system to electric grid with series compensation leads to SSO with Type-3/4 Wind Turbines. In addition, it may also occur due to low SCR (weak grid), inverter controls connected to series capacitor, HVDC/STATCOM system. Recently, IEEE PES Task Force on SSO published TR-80 Report focusing on modeling and analysis of SSO. Study of SSO phenomenon in the Smart Grid requires advanced signal processing methods both for measurement and analysis. This webinar will discuss the modeling, detection and analysis of SSO in the Smart Grid. The application of Time-Frequency Signal Processing and Machine Learning for the study of SSO/SSR phenomenon under flicker and noise. Design of protection for the Wind Turbines as well as the system. It will also help in revision of IEEE Distributed Generation Standard 1547.
Smart Sampling for Reduced and Representative Power System Scenario Selection
Creators: Xueqing Sun
Xinya Li
Sohom Datta
Xinda Ke
Qiuhua Huang
Renke Huang
and Z. Jason Hou
Publisher: name: IEEE
Year: 2021

We develop an approach integrating comprehensive exploratory data analyses and smart sampling techniques to identify and select a small subset of representative power system scenarios that maintain the coverage of system scenarios and operation envelope, therefore, leading to very efficient, yet representative studies and analysis.
With increasing penetration of renewable energy and active market participation, power system operation scenarios and patterns have increased exponentially. This has led to challenges in identifying a good subset of scenarios for routine planning, operation, and emerging machine learning applications. To address these challenges, we develop an approach integrating comprehensive exploratory data analyses and smart sampling techniques to identify and select a small subset of representative power system scenarios that maintain the coverage of system scenarios and operation envelope, therefore, leading to very efficient, yet representative studies and analysis. We propose a hierarchical Latin Hypercube Sampling (LHS) technique for smart sampling, which allows free-form distributions of system load and considers generator commitment status along with generation levels. A set of performance metrics are also defined for systematic evaluation of the adequacy and efficiency of the sampled cases. The developed approach and metrics are demonstrated using the Texas 2000 bus system in this paper and will be extended to the more complex real world systems such as Western Interconnect System.
MICROTOMOGRAFIA DE SOLOS CONTAMINADOS POR SOLVENTES ORGANOCLORADOS
Creators: name: Pino, Daphne S.
name: Bertolo, Reginaldo A.
name: Pak, Tannaz
name: Archilha, Nataly L.
name: Bianco, Carlo
Publisher: name: Zenodo
Year: 2020
Subjects: ferro zero-valente
nanoremediação
águas subterrâneas
áreas contaminada
microtomografia de raios-X

description: RESUMO O número de áreas contaminadas conhecidas no Brasil é da ordem de milhares, com impactos sobre o meio ambiente e a saúde humana. Essas áreas apresentam-se em diferentes fases de investigação, e as que atingiram o estágio de remediação muitas vezes são incapazes de alcançar as metas ambientais estabelecidas. Nesse contexto, este projeto visa estudar detalhadamente em 3D o solo de uma área contaminada, através da microtomografia de raios-X (CT), para determinar o potencial de remediação da área por nanopartículas de ferro zero-valente (nZVI). Uma grande vantagem do uso de µCT é a obtenção de dados internos de uma amostra de forma não destrutiva. A aquisição de imagens envolve a rotação de uma amostra de solo não perturbada na linha de feixe de raios-X, enquanto o detector coleta as projeções (imagens radiográficas) de cada ângulo. Algoritmos de reconstrução de imagem são usados para gerar imagens 3D da amostra a partir das imagens radiográficas 2D coletadas. Foram estudados 10 locais contaminados no Estado de São Paulo a partir do banco de dados da CETESB, de mais de 6000 áreas. Um conjunto de critérios foi desenvolvido com base em aplicações piloto bem-sucedidas de remediação nZVI em outros países, para auxiliar na seleção do local mais adequado para usar a tecnologia de nanorremediação. A mobilidade do nZVI foi então estudada para duas áreas selecionadas através de modelos numéricos. Considera-se a injeção de nZVI através de um poço convencional para estimar o raio de influência e a distribuição final das partículas no aquífero. A fase seguinte é o desenvolvimento de protocolos de análise para µCT em amostras de solo da área-alvo, e para interpretação de dados de imagem. Nesta, realiza-se análise quantitativa para caracterização de parâmetros geométricos básicos. Posteriormente, a modelagem da rede de poros permitirá individualizar os poros e suas conexões em escala microscópica e, possivelmente, a distinção entre diferentes fases de saturação (por exemplo, água, gás, contaminantes). Essa caracterização 3D do meio é essencial para a compreensão das interações fluidomatriz na escala dos poros, e pode fornecer ferramentas úteis para avaliar locais contaminados e planos de remediação em potencial.
Introduction to Behind the Meter Storage - Safety, Control, and Options Session 1: Options for Behind the Meter Storage, SWOT (slides)
Creators: Doug Houseman
Publisher: name: IEEE
Year: 2021

Putting storage at the premise is the goal of many customers. No need to worry about the grid, no waiting to charge vehicles, and no worries, right? It solves a number of issues with large rooftop arrays and grid constraints, it can solve issues with outage durations as well. Storage at a premise can lead to all sorts of issues, from maintenance to fires. It is not that storage at a premise is a bad idea, it just needs to be done right. Choosing the right storage, working with first responders to teach them what to do with storage. Following the rules for design and location and even picking the right storage is important to longevity and other issues.

Once storage is installed inspection, maintenance, and operation can make a huge difference in the safety and life of the storage.
Putting storage at the premise is the goal of many customers. No need to worry about the grid, no waiting to charge vehicles, and no worries, right? It solves a number of issues with large rooftop arrays and grid constraints, it can solve issues with outage durations as well. Storage at a premise can lead to all sorts of issues, from maintenance to fires. It is not that storage at a premise is a bad idea, it just needs to be done right. Choosing the right storage, working with first responders to teach them what to do with storage. Following the rules for design and location and even picking the right storage is important to longevity and other issues.

Once storage is installed inspection, maintenance, and operation can make a huge difference in the safety and life of the storage.
Search for new physics in $B_s$-mixing
Creators: name: Lenz, Alexander J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the current status of the search for new physics effects in the mixing quantities $ΔM_s$, $ΔΓ_s$ and $ϕ_s$ of the neutral $B_s$-system.
description: Invited talk at Continuous Advances in QCD (CAQCD-08), May 15-18, 2008, Minneapolis; 9 pages; 2 References added
title: Verschiedenes
Creators: name: IZGOnZeit, Redaktion
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2017

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 6 (2017)
Da cianita à cianita: um estudo petrocronológico dos metapelitos do Grupo Carrancas (MG) baseado em metodologias clássicas e modernas
Creators: name: Westin, Alice
name: Campos Neto, Mario C.
name: Tedeschi, Mahyra
Publisher: name: Zenodo
Year: 2020
Subjects: Petrocronologia
Geotermobarometria
U-Th-PbT em monazita
Gondwana Oeste

description: RESUMO O foco deste projeto encontra-se no estudo petrocronológico de metapelitos ricos em Al pertencentes ao Grupo Carrancas, localizado no extremo sul do Orógeno Brasília. A Petrocronologia se baseia na relação entre as condições físicas vigentes (e.g. pressão, temperatura) e a idade/duração de processos específicos de formação de rochas. No campo da Petrologia Metamórfica, a obtenção das condições P-T e da idade de cada estágio de formação da rocha de interesse, permite a compreensão da evolução geotectônica de orógenos colisionais, facilitando o entendimento da duração de eventos geotectônicos de mega escala. No presente projeto, a combinação de técnicas de geotermobarometria clássicas e modernas com a datação química U-Th-PbT de monazita permitirá a obtenção de trajetórias P-T-t de amostras pertencentes a diferentes regiões da Nappe Carrancas, área-tipo do Grupo Carrancas. Análise petrográfica criteriosa precederá análises químicas pontuais WDS e a obtenção de mapas composicionais quantitativos via microssonda eletrônica. As condições P- T em equilíbrio serão estimadas através da aplicação dos geotermobarômetros Zr-em-rutilo, microespectroscopia Raman de materiais carbonosos (grafita) e GRAIL (granada-rutiloaluminossilicato-ilmenita-quartzo), da construção de diagramas de fases em equilíbrio via software Theriak-Domino e do uso dos softwares XMapTools e GRTMOD. A datação U-Th-PbT de cristais de monazita dos variados estágios P-T será realizada via microssonda eletrônica. Os dados obtidos permitirão considerações relacionadas ao ambiente tectônico vigente durante o pico metamórfico e à exumação do Grupo Carrancas, agregando novas informações para os estudos da aglutinação do Gondwana Oeste e da duração de processos geológicos durante o Neoproterozóico.
Proposal for a micromagnetic standard problem: domain wall pinning at phase boundaries
Creators: name: Heistracher, Paul
name: Abert, Claas
name: Bruckner, Florian
name: Schrefl, Thomas
name: Suess, Dieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose a novel micromagnetic standard problem calculating the coercive field for unpinning a domain wall at the interface of a multiphase magnet. This problem is sensitive to discontinuities in material parameters for the exchange interaction, the uniaxial anisotropy, and the spontaneous magnetization. We derive an explicit treatment of jump conditions at material interfaces for the exchange interaction in the finite-difference discretization. The micromagnetic simulation results are compared with analytical solutions and show good agreement. The proposed standard problem is well-suited to test the implementation of both finite-difference and finite-element simulation codes.
Cluster Analysis of a Symbolic Regression Search Space
Creators: name: Kronberger, Gabriel
name: Kammerer, Lukas
name: Burlacu, Bogdan
name: Winkler, Stephan M.
name: Kommenda, Michael
name: Affenzeller, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this chapter we take a closer look at the distribution of symbolic regression models generated by genetic programming in the search space. The motivation for this work is to improve the search for well-fitting symbolic regression models by using information about the similarity of models that can be precomputed independently from the target function. For our analysis, we use a restricted grammar for uni-variate symbolic regression models and generate all possible models up to a fixed length limit. We identify unique models and cluster them based on phenotypic as well as genotypic similarity. We find that phenotypic similarity leads to well-defined clusters while genotypic similarity does not produce a clear clustering. By mapping solution candidates visited by GP to the enumerated search space we find that GP initially explores the whole search space and later converges to the subspace of highest quality expressions in a run for a simple benchmark problem.
description: Genetic Programming Theory and Practice XVI. Genetic and Evolutionary Computation. Springer
Introduction to Behind the Meter Storage - Safety, Control, and Options Session 2: Safety, Control, Maintenance and Operations (slides)
Creators: Doug Houseman
Publisher: name: IEEE
Year: 2021

Putting storage at the premise is the goal of many customers. No need to worry about the grid, no waiting to charge vehicles, and no worries, right? It solves a number of issues with large rooftop arrays and grid constraints, it can solve issues with outage durations as well. Storage at a premise can lead to all sorts of issues, from maintenance to fires. It is not that storage at a premise is a bad idea, it just needs to be done right. Choosing the right storage, working with first responders to teach them what to do with storage. Following the rules for design and location and even picking the right storage is important to longevity and other issues.

Once storage is installed inspection, maintenance, and operation can make a huge difference in the safety and life of the storage.
Putting storage at the premise is the goal of many customers. No need to worry about the grid, no waiting to charge vehicles, and no worries, right? It solves a number of issues with large rooftop arrays and grid constraints, it can solve issues with outage durations as well. Storage at a premise can lead to all sorts of issues, from maintenance to fires. It is not that storage at a premise is a bad idea, it just needs to be done right. Choosing the right storage, working with first responders to teach them what to do with storage. Following the rules for design and location and even picking the right storage is important to longevity and other issues.

Once storage is installed inspection, maintenance, and operation can make a huge difference in the safety and life of the storage.
Central exclusive production of scalar χ_c meson at the Tevatron, RHIC and LHC energies
Creators: name: Pasechnik, R. S.
name: Szczurek, A.
name: Teryaev, O. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate several differential distributions for exclusive double diffractive $χ_c(0^{++})$ production in proton-antiproton collisions at the Tevatron and in proton-proton collisions at RHIC and LHC in terms of unintegrated gluon distributions (UGDFs) within the $k_t$-factorisation approach. The uncertainties of the Khoze-Martin-Ryskin approach are discussed in detail. The $g^* g^* \to χ_c(0^{++})$ transition vertex is calculated as a function of gluon virtualities applying the standard pNRQCD technique. The off-shell effects are discussed and quantified. They lead to a reduction of the cross section by a factor 2--5, depending on the position in the phase space and UGDFs. Different models of UGDFs are used and the results are shown and discussed. The cross section for diffractive component depends strongly on UGDFs. We calculate also the differential distributions for the $γ^* γ^* \to χ_c(0^{++})$ fusion mechanism. The integrated cross section for photon-photon fusion is much smaller than that of diffractive origin. The two components have very different dependence on momentum transfers $t_1, t_2$ in the nucleon lines as well as azimuthal-angle correlations between both outgoing nucleons.
description: 34 pages, 23 figures, 2 tables
Processos de interação entre magmas carbonatíticos e suas encaixantes silicáticas: o exemplo do complexo de Jacupiranga (SP)
Creators: name: Chmyz, Luanna
name: Ruberti, Excelso
name: Azzone, Rogério G.
Publisher: name: Zenodo
Year: 2020
Subjects: carbonatitos
assimilação
rochas ultramáficas

description: RESUMO – Magmas carbonatíticos são extremamente reativos, característica evidenciada pelo importante papel destes líquidos na geração de heterogeneidades no manto e pelos modelos atuais para gênese de magmas kimberlíticos a partir de assimilação de xenólitos mantélicos. No entanto, poucos estudos enfatizam a interação dos magmas carbonatíticos com suas encaixantes crustais. Em níveis crustais, este caráter reativo é reconhecido principalmente por alterar encaixantes a partir de processos metassomáticos ou de fenitização. Outros processos reacionais são tidos como pouco significativos e desconsiderados na maioria dos modelos petrológicos. Neste projeto de pesquisa, buscou-se entender melhor os processos envolvidos nesta interação considerando o complexo de Jacupiranga (ca. 135-131 Ma, Cajati – SP), uma ocorrência carbonatítica clássica, como objeto de estudo. Análises de química mineral (EPMA e LA-ICP-MS), aliadas a dados compilados da literatura, indicam que a assimilação de xenólitos de clinopiroxenito causou um aumento local da atividade de sílica no magma carbonatítico e teve um papel fundamental não somente na formação de rochas de reação como também na evolução do carbonatito de Jacupiranga. A caracterização de processos de assimilação de xenólitos da encaixante é inédita para o carbonatito desta ocorrência brasileira. Ao contrário dos modelos anteriormente propostos, que atribuem às rochas de reação de Jacupiranga uma origem exclusivamente relacionada a processos de fenitização, considera-se, neste trabalho, que o fundido carbonatítico é o principal agente responsável por sua gênese.
July -  Global experiences in Smart Grid - Applications and implementations
Creators: Kumaraguru Prabakar and Deepthi Vaidhynathan
Noel Schulz
Anurag Srivasstava
Sanjeev Pannala
Suresh Chandra Srivastava
Santanu Kumar Mishra
and Ankush Sharma
Aaron Snyder
Michele Pastore
and Vadim Zheglov
Somesh Bhattacharya
Renata Sadula
and Brian Azzopardi
Sahand Ghaseminejad Liasi and Alireza Fereidunian
Publisher: name: IEEE
Year: 2021

Newsletter
Issue on the global applications and implementations of smart grid featuring "Implementing 61850 7-420 to enable PV inverter interoperability," "Collaborations for Advanced Distribution Systems in India and US: UI-ASSIST," "Global Experiences in Smart Metering - Tactical Loss Reduction in Developing Countries," "Planning the future Energy and Water networks- A vision for the Maltese Islands," and "Distribution Automation: Readiness, Levels, and Intensity"
Novel Data-Driven Distributed Learning Framework for Solving AC Power Flow for Large Interconnected Systems
Creators: Bharat Vyakaranam
Kaveri Mahapatra
Xinya Li
Heng Wang
Pavel Etingov
Zhangshuan Hou
Quan Nguyen
Tony Nguyen
Nader Samaan
Marcelo Elizondo
and Todd Hay
Publisher: name: IEEE
Year: 2021

This paper presents a novel data-driven framework for accelerating the process of obtaining multiple AC power flow solutions for large systems using deep convolutional neural networks.
Recent advancement in power systems induces complexity in large-scale interconnected systems and poses challenges in performing security assessment studies at various operating conditions. Traditional model-based methods are computationally intensive and may not meet the requirements for real-time applications. This paper presents a novel data-driven framework for accelerating the process of obtaining multiple AC power flow (ACPF) solutions for large systems using deep convolutional neural networks (DCNN). DCNN models are designed and trained using various representative power flow cases from a system, whose outputs can be used to perform steady-state security assessment studies. Distributed training with multiple Graphical processing units (GPU)s is implemented using TensorFlow to reduce computation time. The proposed framework is implemented to identify critical buses and recognize the ACPF cases expected to cause steady-state bus voltage violations. The efficacy and feasibility of the proposed framework are evaluated on the Western Electricity Coordinating Council (WECC) 2028 system. Results demonstrate that the proposed framework is highly accurate and possess good interpretability in performing various transmission planning and operation assessment studies for large scale power networks.
O potencial do zircão na exploração mineral: Isotopia U-Pb, ETR e Ti via SHRIMP-IIe no IGc-USP
Creators: name: Borba, Mauricio L.
name: Sato, Kei
name: Tassinari, Colombo C.G,
Publisher: name: Zenodo
Year: 2020
Subjects: U-Pb SHRIMP
Zircão hidrotermal
ETR em zircão
Ti em zircão
Província Mineral de Carajás

description: RESUMO – A geoquímica e geocronologia no zircão via SHRIMP são ferramentas poderosas em estudos petrogenéticos de áreas com complexos estágios evolutivos. Zonas mineralizadas em que a alteração hidrotermal é fraca, ou oculta, são de complexa identificação, dificultando a descoberta de novos depósitos minerais. Assim, a caracterização de zircão hidrotermal, bem como, esta alteração em zircão magmático, podem auxiliar programas de exploração mineral. Esta pesquisa estuda idades U-Pb, combinadas às assinaturas de elementos terras raras e isótopos de Ti em zircão, buscando informações quanto à gênese e evolução geológica de áreas com potencial mineral. Estudos recentes classificaram zircões hidrotermais, por meio da avaliação de assinaturas geoquímicas e feições distintas dos zircões magmáticos. Os dados alcançados distinguiram zircões magmáticos alterados hidrotermalmente, mostrando que seu comportamento geoquímico difere tanto dos magmáticos, quanto dos formados por processos hidrotermais. As avaliações utilizaram conteúdo de determinados elementos no cristal (e.g. La, Ce, Eu, Ho, U, Th), combinada com imagens de MEV-CL para gerar a classificação proposta. Isótopos de Ti em zircão são uma ferramenta ainda em desenvolvimento e adequação, porém, promissora em geotermometria. As análises de Ti em zircão estão irão contribuir com informações dos intervalos de temperatura de cada sistema. Os zircões utilizados neste estudo são de rochas do embasamento da porção SE da Província Mineral de Carajás (PMC). A PMC compreende as rochas crustais mais antigas do Cráton Amazônico, sendo conhecida pela concentração de depósitos minerais (e.g. ocorrências de depósitos tipo IOCG). Este projeto analisou rochas do embasamento, ou encaixantes de depósitos minerais, mostrando zircões hidrotermais de idade 2540 Ma, associados a granitoides de 2740 Ma. Estes estudos podem auxiliar em avaliações de condições de oxidação e fertilidade de fluidos, tendo potencial na exploração mineral. O projeto busca também contribuir para o conhecimento da dinâmica e evolução dos sistemas hidrotermais na formação de depósitos do tipo IOCG e da sua evolução geológica.
Slides for - Learning the MMSE Channel Estimator
Creators: Dr. David Neumann
Dr. Thomas Wiese
Dr. Wolfgang Utschick
Publisher: name: IEEE
Year: 2021

Webinar Slides - SPS Webinar, June 24 2021, Dr. David Neumann, Dr. Thomas Wiese, Dr. Wolfgang Utschick
This webinar will discuss the MMSE channel estimator for a simple SIMO system model, without knowledge of the required channel statistics. Although the derived MMSE estimator is computationally intractable in the general form, its structure can be used to motivate a neural network architecture with lower complexity. The complexity reduction is based on a set of assumptions on the system model that simplify the MMSE estimator. The performance of the simplified MMSE estimator degrades significantly when those assumptions are not met. In contrast, a neural network based on the simplified MMSE estimator can compensate the mismatch by learning from data of the actual channel model. The presenters will also show how to extend the simple SIMO model to other practically relevant scenarios. Finally, they will demonstrate the performance when the neural network is learned based on actual channel measurements as compared to simulated data. patterns and systems for signals that are naturally tensors, e.g., images and video. For a concrete application, they show that functional magnetic resonance imaging (fMRI) acceleration is a tensor sampling problem, where design of practical sampling schemes and an algorithmic framework are used to handle it. Numerical results show that their tensor sampling strategy accelerates the fMRI sampling process significantly without sacrificing reconstruction accuracy.
Space-filling models of the acetylene molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: 30606 Structural Chemistry and Spectroscopy
subject: FOS: Chemical sciences

description: Mixtures of air and acetylene are explosive over a wide range, from about 2.5 percent air in acetylene to about 12.5 percent acetylene in air. When burned with the correct amount of air, acetylene gives a pure, white light, and for this reason it was at one time used for illumination in locations where electric power was not available, for example, buoys, miners' lamps, and road signals. The combustion of acetylene produces a large amount of heat, and, in a properly designed torch, the oxyacetylene flame attains the highest flame temperature of any known mixture of combustible gases. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
The development of a testbed for the X-ray Interferometer mission
Creators: name: Hartog, Roland den
name: Uttley, Phil
name: Willingale, Richard
name: Hoevers, Henk
name: Herder, Jan-Willem den
name: Wise, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: An X-ray Interferometer (XRI) has recently been proposed as a theme for ESA's Voyage 2050 planning cycle, with the eventual goal to observe the X-ray sky with an unprecedented angular resolution better than 1 micro arcsec (5 prad) [1]. A scientifically very interesting mission is possible on the basis of a single spacecraft [2], owing to the compact 'telephoto' design proposed earlier by Willingale [3]. Between the practical demonstration of X-ray interferometry at 1 keV by Cash et al. [4] with a 1 mm baseline and 0.1 arcsec effective resolution to a mission flying an interferometer with a baseline of one or more meters, an effective collecting area of square meters and micro arcsec resolution lie many milestones. The first important steps to scale up from a laboratory experiment to a viable mission concept will have to be taken on a scalable and flexible testbed set-up. Such a testbed cannot singularly focus on the optical aspects, but should simultaneously address the thermal and mechanical stability of the interferometer. A particular challenge is the coherent X-ray source, which should provide a wavefront at the entrance of the interferometer that is transversely coherent over a distance at least equal to the baseline, and bright enough. In this paper, we will explore the build-up of a testbed in several stages, with increasing requirements on optical quality and associated thermo-mechanical control and source sophistication, with the intent to guide the technological development of X-ray interferometry from the lab to space in a sequence of achievable milestones.
description: 12 pages, 4 figures, final draft manuscript for the SPIE Astronomical Telescopes + Instrumentation online conference, 2020
Chirality-Selective Excitation of Coherent Phonons in Carbon Nanotubes
Creators: name: Kim, J. -H.
name: Han, K. -J.
name: Kim, N. -J.
name: Yee, K. -J.
name: Lim, Y. -S.
name: Sanders, G. D.
name: Stanton, C. J.
name: Booshehri, L. G.
name: Haroz, E. H.
name: Kono, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using pre-designed trains of femtosecond optical pulses, we have selectively excited coherent phonons of the radial breathing mode of specific-chirality single-walled carbon nanotubes within an ensemble sample. By analyzing the initial phase of the phonon oscillations, we prove that the tube diameter initially increases in response to ultrafast photoexcitation. Furthermore, from excitation profiles, we demonstrate that an excitonic absorption peak of carbon nanotubes periodically oscillates as a function of time when the tube diameter undergoes radial breathing mode oscillations.
description: 4 pages, 4 figures
Slides for - Facial Expression Analysis with Attention Mechanism
Creators: Dr. Jiabei Zeng
Publisher: name: IEEE
Year: 2021

Webinar Slides - SPS Webinar, July 2 2021, Dr. Jiabei Zeng
Facial expressions are configurations of different muscle movements in the face. The local characters of muscle movements play an important role in distinguishing facial expressions by machines. In this webinar, the presenter will explore the local characters local characters of muscle movements by introducing the attention mechanism into two frameworks: 1) Propose a supervised convolutional neural network (CNN) with attention mechanism to recognize the facial expression with partially occluded faces. Through the attention module, the weights for different facial regions were understood along with the perceived occluded regions of the face and focused on the most discriminative unoccluded regions. 2) Propose a self-supervised facial action representation learning framework, where the attention mechanism is embedded in the encoder. Through the attention module, the result was to be able to discover the discriminative facial regions in an unsupervised manner and the ability to achieve self-supervised representation that improves the performance of facial action unit detection.
title: Neuerscheinungen
Creators: name: IZGOnZeit, Redaktion
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2017

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 6 (2017)
การสร้างชุดทดลองการสั่นสะเทือนอย่างง่าย
Creators: name: วีรพล  ทองคุปต์
Publisher: name: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ
Year: 2013
Subjects: การสั่นสะเทือนอย่างง่าย, ชุดทดลอง, การประเมินประสิทธิภาพ, แนวคิดในการออกแบบ

description: 2, 7, วารสารวิชาการและวิจัย มทร.พระนคร
Central limit theorems in linear structural error-in-variables models with explanatory variables in the domain of attraction of the normal law
Creators: name: Martsynyuk, Yuliya V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62J99, 60F05, 60E07 (Primary) 62G15 (Secondary)

description: Linear structural error-in-variables models with univariate observations are revisited for studying modified least squares estimators of the slope and intercept. New marginal central limit theorems (CLT's) are established for these estimators, assuming the existence of four moments for the measurement errors and that the explanatory variables are in the domain of attraction of the normal law. The latter condition for the explanatory variables is used the first time, and is so far the most general in this context. It is also optimal, or nearly optimal, for our CLT's. Moreover, due to the obtained CLT's being in Studentized and self-normalized forms to begin with, they are a priori nearly, or completely, data-based, and free of unknown parameters of the joint distribution of the error and explanatory variables. Consequently, they lead to a variety of readily available, or easily derivable, large-sample approximate confidence intervals (CI's) for the slope and intercept. In contrast, in related CLT's in the literature so far, the variances of the limiting normal distributions, in general, are complicated and depend on various, typically unknown, moments of the error and explanatory variables. Thus, the corresponding CI's for the slope and intercept in the literature, unlike those of the present paper, are available only under some additional model assumptions.
description: Published at http://dx.doi.org/10.1214/07-EJS056 in the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: 10 Jahre MA „Gender Studies - Interdisziplinäre Forschung und Anwendung” an der Universität Bielefeld
Creators: name: IZGOnZeit, Redaktion
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2017

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IZGOnZeit Nr. 6 (2017)
Design of a system for controlling a levitating sphere in superfluid $^3$He at extremely low temperatures
Creators: name: Arrayás, M.
name: Trueba, José L.
name: Uriarte, Carlos
name: Zmeev, Dmitry E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a new mechanical probe to study the properties of superfluid $^3$He at microkelvin temperatures down to 100$μ$K. The setup consists of a set of coils for levitating a superconducting sphere and controlling its motion in a wide variety of regimes. In particular, the realisation of motion of a levitating body at a uniform velocity presents both an experimental challenge and a promising direction into the study of the edge states in topological superfluid $^3$He-B. We include the theoretical study of the device stability and simulations to illustrate the capabilities of the control system.