cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
DEIS: Dependability Engineering Innovation for Industrial CPS
Creators: name: Armengaud, Erik
name: Macher, Georg
name: Massoner, Alexander
name: Frager, Sebastian
name: Adler, Rasmus
name: Schneider, Daniel
name: Longo, Simone
name: Melis, Massimiliano
name: Groppo, Riccardo
name: Villa, Federica
name: OLeary, Padraig
name: Bambury, Kevin
name: Anita, Finnegan
name: Zeller, Marc
name: Hoefig, Kai
name: Papadopoulos, Yiannis
name: Hawkins, Richard
name: Kelly, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The open and cooperative nature of Cyber-Physical Systems (CPS) poses new challenges in assuring dependability. The DEIS project (Dependability Engineering Innovation for automotive CPS. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 732242, see http://www.deis-project.eu) addresses these challenges by developing technologies that form a science of dependable system integration. In the core of these technologies lies the concept of a Digital Dependability Identity (DDI) of a component or system. DDIs are modular, composable, and executable in the field facilitating (a) efficient synthesis of component and system dependability information over the supply chain and (b) effective evaluation of this information in-the-field for safe and secure composition of highly distributed and autonomous CPS. The paper outlines the DDI concept and opportunities for application in four industrial use cases.
Bandwidth and Fermi surface of Iron-Oxypnictides: covalency and sensitivity to structural changes
Creators: name: Vildosola, Veronica
name: Pourovskii, Leonid
name: Arita, Ryotaro
name: Biermann, Silke
name: Georges, Antoine
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Some important aspects of the electronic structure of the iron oxypnictides depend very sensitively on small changes in interatomic distances and bond angles within the iron-pnictogen subunit. Using first-principles full-potential electronic structure calculations, we investigate this sensitive dependence, contrasting in particular LaOFeAs and LaOFeP. The width of the Fe-bands is significantly larger for LaOFeP, indicating a better metal and weaker electronic correlations. When calculated at their experimental crystal structure these two materials have significantly different low-energy band structure. The topology of the Fermi surface changes when going from LaOFeP to LaOFeAs, with a three-dimensional hole pocket present in the former case transforming into a tube with two-dimensional dispersion. We show that the low-energy band structure of LaOFeAs evolves towards that of LaOFeP as the As atom is lowered closer to the Fe plane with respect to its experimental position. The physical origin of this sensitivity to the iron-pnictogen distance is the covalency of the iron-pnictogen bond, leading to strong hybridization effects. To illustrate this, we construct Wannier functions, which are found to have a large spatial extension when the energy window is restricted to the bands with dominant iron character. Finally, we show that the Fe bandwidth slightly increases as one moves along the rare-earth series in ReOFeAs and discuss the physical origin of this effect.
description: 10 pages, 9 figures
Design and Characterization of Curved and Spherical Flexure Hinges for Planar and Spatial Compliant Mechanisms
Creators: name: Parvari Rad, Farid <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: ING-IND/13 Meccanica applicata alle macchine

description: A flexure hinge is a flexible connector that can provide a limited rotational motion between two rigid parts by means of material deformation. These connectors can be used to substitute traditional kinematic pairs (like bearing couplings) in rigid-body mechanisms. When compared to their rigid-body counterpart, flexure hinges are characterized by reduced weight, absence of backlash and friction, part-count reduction, but restricted range of motion. There are several types of flexure hinges in the literature that have been studied and characterized for different applications. In our
study, we have introduced new types of flexures with curved structures i.e. circularly curved-beam flexures and spherical flexures. These flexures have been utilized for both planar applications (e.g. articulated robotic fingers) and spatial applications (e.g. spherical compliant mechanisms). We have derived closed-form compliance equations for both circularly curved-beam flexures and
spherical flexures. Each element of the spatial compliance matrix is analytically computed as a function of hinge dimensions and employed material. The theoretical model is then validated by comparing analytical data with the results obtained through Finite Element Analysis. A case study
is also presented for each class of flexures, concerning the potential applications in the optimal design of planar and spatial compliant mechanisms. Each case study is followed by comparing the performance of these novel flexures with the performance of commonly used geometries in terms of principle compliance factors, parasitic motions and maximum stress demands. Furthermore, we have extended our study to the design and analysis of serial and parallel compliant mechanisms, where the proposed flexures have been employed to achieve spatial motions e.g. compliant spherical joints.
Slides for Webinar:Valuing Energy Storage with Clean Peak Energy Standards
Creators: Nehal Divekar
Publisher: name: IEEE
Year: 2020

Slides presented at webinar: Valuing Energy Storage with Clean Peak Energy Standards
Massachusetts became the pioneering state to initiate policymaking for a clean peak energy standard (CPES) that seeks to incentivize technologies providing clean energy or reducing consumption during peak demand, in order to reduce ratepayer costs and avoid GHG emissions. The concept holds broader appeal given its many parallels with the RPS construct and mandates load serving entities to meet a pre-determined percentage of annual retail electricity sales by procurement of clean peak energy certificates (CPC).

Energy storage holds a role of prominence in that policy objective by virtue of its versatility in shifting clean energy to times of peak demand and also providing ancillary services to the grid. Additional revenues from CPC coupled with declining capital costs therefore promise to create a better business case and consequently drive the storage industry. This webinar will cover the proposed CPES policy construct and emphasize on the economics of applications involving energy storage.
Slides for Webinar: A Standardized API for Distribution System Control and Mgmt
Creators: Poorva Sharma
Ron Melton
Publisher: name: IEEE
Year: 2020

Slides for Webinar: A Standardized API for Distribution System Control and Mgmt
Engineers and researchers developing distribution system management and control applications; system integrators and vendors developing and deploying platforms supporting distribution system operations; electric power system researchers developing advanced algorithms; utilities planning software acquisitions supporting the modernization of their systems to accommodate growing levels of distributed energy resources.
Slides for Webinar: Value of DER to the grid  - Overview and Methodology
Creators: Shay Bahramirad
Publisher: name: IEEE
Year: 2019

Slides presented at webinar: Value of DER to the grid  - Overview and Methodology
Distributed Energy Resources (DERs) provide value through multiple streams and under various categories including the environment, economy and the electric system. One crucial type of value is that DERs may defer the need for capacity upgrades, making the grid more economical. Recognizing this, several states are pursuing different approaches to valuing DER's contribution to the grid. These methodologies to value DER can range between being highly granular to a generalized one, thus leading to varied levels of complexity and ease of implementation. Effective valuation mechanisms for DERs will enable efficient allocation of resources to best improve the planning, operation, resilience and reliability of the distribution system. This presentation will introduce the key concepts in valuing DERs and introduce framework being developed by ComEd, while summarizing recent developments in the methodology and present the analysis for valuing DERs on the distribution grid. The general challenges associated with the design and implementation will also be discussed.
Ambientes construtivistas e a aprendizagem significativa e rigorosa da Física
Creators: name: Valadares, Jorge
Publisher: name: Zenodo
Year: 2005
Subjects: Ambientes construtivistas
Aprendizagem significativa

description: Neste Seminário realizado na Universidade de Évora pretendeu-se discutir a questão fundamental do insucesso no ensino da Física. Há vários factores que contribuem para esse insucesso, um dos quais é o ambiente de aprendizagem na sala de aula. Fundamentou-se o chamado ambiente construtivista de apendizagem que foi criado em vários estudos que efectuámos e que se revelou eficaz em termos de aprendizagem dos alunos
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (208)]
Creators: name: Giangaleazzo
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1388
Subjects: subject: Sonstige weltliche Aussteller
subject: Urkunde
subject: 090

description: [Gian Galeazzo Visconti,] Herr von Mailand etc., comes virtutum und imperialis vicarius generalis, erteilt dem orator Berardus Tronchetus, praeceptor der domus St. Antonii in Cremona und Prokurator des Abts, Kapitels und Konvents des Klosters St. Antonii im Bistum Vicenza, die Erlaubnis, das testamentarisch festgelegte Erbe des Gasparinus de Gambazochis und des Thomasinus de Uimercate anzutreten, auf Grundlage dessen ein Hospital und eine Kapelle in Cremona errichtet werden sollte.
A quantum bound on the 1/f noise in semiconductors with a conical energy-momentum dispersion
Creators: name: Kazakov, Kirill A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum indeterminacy caused by non-commutativity of observables at different times sets a lower bound on the voltage noise power spectrum in any conducting material. This bound is calculated explicitly in the case of semiconductors with a conical energy-momentum dispersion of charge carriers. It possesses all characteristic properties of 1/f noise. Its momentum decomposition is found to be singular at zero particle momentum, a measurable consequence being a sharp peak in the noise magnitude at small charge carrier density. In application to monolayer graphene, this peak becomes M-shaped on account of a continuous transition from the electron to hole conductivity. A comparison with experimental data is made which demonstrates that the calculated power spectrum is close in magnitude and congruent to the observed.
description: 13 pages, 4 figures
The death - rebirth myth as the healing agent in music
Creators: name: Kenny, Carolyn
Publisher: name: University of British Columbia
Year: 2010

description: The general purpose of the study is to build a case for use of the creative arts in therapy. The second and more specific purpose is to provide one example of how music can be used as therapy through the Death-Rebirth Myth. Inadequacies of standard therapies which could be improved by inclusion of creative arts therapies are described, the primary focus being the dearth of creativity. Theoretical foundations are developed for the healing aspects of the Death-Rebirth Myth. The myth is then revealed within the musical context. Finally, the role of the music therapist is discussed in light of the mythic approach focusing on the music therapist as a rituaIi st. Appendices provide practical examples using the Death-Rebirth Myth as a healing agent in music. These sessions are described with short evaluative questionnaires, descriptions of sessions and photographs. Musical examples of the Death-Rebirth Myth are included on tape.
Multi-layered Spectral Formation in SNe Ia Around Maximum Light
Creators: name: Bongard, S.
name: Baron, E.
name: Smadja, G.
name: Branch, D.
name: Hauschildt, P. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the radiative transfer code PHOENIX to study the line formation of the wavelength region 5000-7000 Angstroms. This is the region where the SNe Ia defining Si II feature occurs. This region is important since the ratio of the two nearby silicon lines has been shown to correlate with the absolute blue magnitude. We use a grid of LTE synthetic spectral models to investigate the formation of line features in the spectra of SNe Ia. By isolating the main contributors to the spectral formation we show that the ions that drive the spectral ratio are Fe III, Fe II, Si II, and S II. While the first two strongly dominate the flux transfer, the latter two form in the same physical region inside of the supernova. We also show that the naive blackbody that one would derive from a fit to the observed spectrum is far different than the true underlying continuum.
description: 35 pages, 15 figures, ApJ (2008) 684 in press
IITP at WAT 2021: System description for English-Hindi Multimodal Translation Task
Creators: name: Gain, Baban
name: Bandyopadhyay, Dibyanayan
name: Ekbal, Asif
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Neural Machine Translation (NMT) is a predominant machine translation technology nowadays because of its end-to-end trainable flexibility. However, NMT still struggles to translate properly in low-resource settings specifically on distant language pairs. One way to overcome this is to use the information from other modalities if available. The idea is that despite differences in languages, both the source and target language speakers see the same thing and the visual representation of both the source and target is the same, which can positively assist the system. Multimodal information can help the NMT system to improve the translation by removing ambiguity on some phrases or words. We participate in the 8th Workshop on Asian Translation (WAT - 2021) for English-Hindi multimodal translation task and achieve 42.47 and 37.50 BLEU points for Evaluation and Challenge subset, respectively.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (209)]
Creators: name: De Beolcho, Corona
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1388
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Corona de Beolcho, servitor Martey und Einwohner von Mailand, setzt mit Autorisierung des Aronus de Auria, miles, Doktor der Rechte, Podestà von Monza und Marrtey capitaneus specialiter deputatus, den Filippus Visconti, Mönch des Klosters von Civate im Bistum Mailand, im Namen Johannes de Bossis, Abt dieses Klosters, in den Besitz von Landgütern, gelegen in Civate, ein.
Holographic QCD model for $N_f=4$
Creators: name: Chen, Yidian
name: Huang, Mei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We establish a holographic QCD model for four flavors, where a light scalar field $X$ and a heavy scalar field $H$ are introduced, separately. The $H$ field is responsible for the breaking of $SU(N_f=4)$ to $SU(N_f=3)$. The ground state and its Regge excitation of meson spectra in the light flavor sector and heavy flavor sector as well as the ligh-heavy mesons are well in agreement with the Particle data group (PDG). Due to the additional introduction of the $H$ field in the model, different Regge slopes for light and heavy mesons can be achieved.
Medium modifications of the bound nucleon GPDs and incoherent DVCS on nuclear targets
Creators: name: Guzey, V.
name: Thomas, A. W.
name: Tsushima, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study incoherent DVCS on $^4$He in the $^4{\rm He}(e,e^{\prime}γp)X$ reaction, which probes medium-modifications of the bound nucleon GPDs and elastic form factors. Assuming that the bound nucleon GPDs are modified in proportion to the corresponding bound nucleon elastic form factors, as predicted in the Quark-Meson Coupling model, we develop an approach to calculate various incoherent nuclear DVCS observables. As an example, we compute the beam-spin DVCS asymmetry, and predict the $x_B$- and $t$-dependence of the ratio of the bound to free proton asymmetries, $A_{\rm LU}^{p^{\ast}}(ϕ)/A_{\rm LU}^{p}(ϕ)$. We find that the deviation of $A_{\rm LU}^{p^{\ast}}(ϕ)/A_{\rm LU}^{p}(ϕ)$ from unity is as much as $\sim$ 6%.
description: 16 pages, 6 figures. Minor editoral corrections, matches the published version in Phys. Lett. B 673 (2009) 9
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (210)]
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1388
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Paxinus, Sohn des verstorbenen Pecinus de Larota, aus der Nachbarschaft St. ... in Cremona bezahlt dem Johannes de Uspinellis, ... des Klosters St. Cataldi in Cremona, einen Geldbetrag für die Erlaubnis, ein Stück Land, gelegen im Stadtgebiet Cremonas, verkaufen zu dürfen.
Evaluation zweier mit RISE DE erarbeiteten Forschungsdatenstrategien am Beispiel einer Universität und einer Hochschule für angewandte Wissenschaften
Creators: name: Wolff, Ian
name: Spiecker, Claus
name: Mertzen, Daniela
Publisher: name: Zenodo
Year: 2025
Subjects: Strategie
Forschungsdaten
HAW

description: Diese Präsentation zum Thema „Evaluation zweier mit RISE DE erarbeiteten Forschungsdatenstrategien am Beispiel einer Universität und einer Hochschule für angewandte Wissenschaften“ wurde auf den E-Science-Tagen in Heidelberg am 13.03.2025 gehalten.
description: Finanziert durch das Bundesministerium für Bildung und Forschung (BMBF) und die Europäische Union (NextGenerationEU), sowie das Ministerium für Wissenschaft, Forschung und Kultur (MWFK) des Landes Brandenburg.
Boson stars and their radial oscillations
Creators: name: Kain, Ben
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the derivation of the pulsations equations for spherically symmetric boson stars and then make a thorough study of the radial oscillation frequencies for the fundamental and first excited modes. We do this for self-interacting boson stars and consider a range of values for the self-coupling constant. We also numerically evolve boson stars and Fourier transform the dynamic solutions. The Fourier transform gives an independent computation of the radial oscillation frequencies and allows us to verify our results obtained from the pulsation equations. We find excellent agreement between the two methods.
description: 13 pages, 5 figures
NICEST, a near-infrared color excess method tailored for small-scale structures
Creators: name: Lombardi, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observational data and theoretical calculations show that significant small-scale substructures are present in dark molecular clouds. These inhomogeneities can provide precious hints on the physical conditions inside the clouds, but can also severely bias extinction measurements. We present NICEST, a novel method to account and correct for inhomogeneities in molecular cloud extinction studies. The method, tested against numerical simulations, removes almost completely the biases introduced by sub-pixel structures and by the contamination of foreground stars. We applied NICEST to 2MASS data of the Pipe molecular complex. The map thereby obtained shows significantly higher (up to 0.41 mag in A_K) extinction peaks than the standard NICER (Lombardi et al. 2001) map. This first application confirms that substructures in nearby molecular clouds, if not accounted for, can significantly bias extinction measurements in regions with A_K > 1 mag; the effect, moreover, is expected to increase in more distant molecular cloud, because of the poorer physical resolution achievable.
description: 13 pages, A&A in press
Slides for Session 4: Understanding Emerging Energy Markets and Technology by Doug Houseman
Creators: Doug Houseman
Publisher: name: IEEE
Year: 2018

Slides presented at Session 4: Understanding Emerging Energy Markets and Technology
In the 1990's wholesale markets were created as part of deregulation. Over the last 20 years, the wholesale markets have continued to evolve, with no end in sight. In the last decade, experimentation has started with retail level markets. The advent of the Internet of Things, large amounts of distributed resources, electric vehicles, and massive changes in the way people use and think about energy. This course will review the history of energy markets, cover the emerging technology of energy, and how retail markets are evolving. The course will cover several possible future scenarios, including energy markets in emerging economies. Session 4: - Review - Transactive Energy in emerging economies - A transactive future - alternatives and options - Other market designs - Mating wholesale and retail markets
Slides for Webinar:  Grid Modernization and Resiliency - Frameworks and Case Study presented by Aaron Snyder
Creators: Aaron Snyder
Publisher: name: IEEE
Year: 2018

Slides presented at webinar:  Grid Modernization and Resiliency - Frameworks and Case Study
This presentation will describe the origins of Grid Modernization and propose a readiness determination methodology.  This methodology will then show how to develop a grid modernization project in a rigorous fashion to meet clearly defined goals.  Following this, a framework for one aspect of Grid Modernization, resiliency, will be presented along with a case study to highlight the application of resiliency concepts to meet Grid Modernization goals.
Gravitational Lensing by Rotating Naked Singularities
Creators: name: Gyulchev, Galin N.
name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We model massive compact objects in galactic nuclei as stationary, axially-symmetric naked singularities in the Einstein-massless scalar field theory and study the resulting gravitational lensing. In the weak deflection limit we study analytically the position of the two weak field images, the corresponding signed and absolute magnifications as well as the centroid up to post-Newtonian order. We show that there are a static post-Newtonian corrections to the signed magnification and their sum as well as to the critical curves, which are function of the scalar charge. The shift of the critical curves as a function of the lens angular momentum is found, and it is shown that they decrease slightingly for the weakly naked and vastly for the strongly naked singularities with the increase of the scalar charge. The point-like caustics drift away from the optical axis and do not depend on the scalar charge. In the strong deflection limit approximation we compute numerically the position of the relativistic images and their separability for weakly naked singularities. All of the lensing quantities are compared to particular cases as Schwarzschild and Kerr black holes as well as Janis--Newman--Winicour naked singularities.
description: 35 pages, 30 figures
Radial velocities, dynamics of stars and nebulosities with GAIA and VLT-GIRAFFE
Creators: name: Martayan, Christophe
name: Fremat, Yves
name: Blomme, Ronny
name: Jonckheere, Anthony
name: Delle-Luche, Celine
name: Sartoretti, Paola
name: Katz, David
name: Viala, Yves
name: Floquet, Michele
name: Hubert, Anne-Marie
name: Neiner, Coralie
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This document is divided in two parts. The first part deals with the radial velocities (RV) distributions for B-type stars and nebulosities observed with the VLT-GIRAFFE in the Large and Small Magellanic Clouds towards the open clusters NGC2004 and NGC330. Thanks to the resolution of GIRAFFE spectra, we found that the RV distribution for the nebulosities in the LMC is bi-modal. This bi-modality can be interpreted, in term of dynamics, by the expansion of the LMC4 superbubble. The second part deals with the GAIA space mission and the determination of the radial velocities by using Radial Velocity Spectrometer (RVS) spectra. The methods to determine the radial velocities are presented as well as preliminary results on simulated RVS spectra.
description: Proceedings GSD2008 conference, submitted to AN
Totimorphic assemblies from neutrally-stable units
Creators: name: Chaudhary, Gaurav
name: Prasath, S Ganga
name: Soucy, Edward
name: Mahadevan, L
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Inspired by the quest for shape-shifting structures in a range of applications, we show how to create morphable structural materials using a neutrally stable unit cell as a building block. This unit cell is a self-stressed hinged structure with a one-parameter family of morphing motions that are all energetically equivalent; however, unlike kinematic mechanisms, it is not infinitely floppy and instead exhibits a tunable mechanical response akin to that of an ideal rigid-plastic material. Theory and simulations allow us to explore the properties of planar and spatial assemblies of neutrally-stable elements and also pose and solve the inverse problem of designing assemblies that can morph from one given shape into another. Simple experimental prototypes of these assemblies corroborate our theoretical results and show that the addition of switchable hinges allows us to create load-bearing structures. All together, totimorphs pave the way for structural materials whose geometry and deformation response can be controlled independently and at multiple scales.
The Classification of Exceptional CDQL Webs on Compact Complex Surfaces
Creators: name: Pereira, Jorge Vitorio
name: Pirio, Luc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53A60

description: Codimension one webs are configurations of finitely many codimension one foliations in general position. Much of the classical theory evolved around the concept of abelian relation: a functional relation among the first integrals of the foliations defining the web reminiscent of Abel's addition theorem in classical algebraic geometry. The abelian relations of a given web form a finite dimensional vector space with dimension (the rank of the web) bounded by Castelnuovo number p(n,k) where n is the dimension of the ambient space and k is the number of foliations defining the web. A fundamental problem in web geometry is the classification of exceptional webs, that is, webs of maximal rank not equivalent to the dual of a projective curve. Recently, J.-M. Trepreau proved that there are no exceptional k-webs for n>2 and k > 2n-1. In dimension two there are examples of exceptional k-webs for arbitrary k and the classification problem is wide open. In this paper, we classify the exceptional Completely Decomposable Quasi-Linear (CDQL) webs globally defined on compact complex surfaces. By definition, the CDQL (k+1)-webs are formed by the superposition of k linear foliations and one non-linear foliation. For instance, we show that up to projective transformations there are exactly four countable families and thirteen sporadic exceptional CDQL webs on the projective plane.
description: 75 pages, 7 figures
title: The mobilisation of the tribal Kurds under the PKK : how the Kurds of Turkey were revitalised
Creators: name: Ozcan, Ali Kemal
Publisher: name: University of Kent
Year: 2022

description: This study attempts to analyse the internal dynamics of the most recent Kurdish resistance movement in Turkey. The main focus of analysis is the PKK's organisational existence - its ideational and material structure. As the leading entity of the Kurdish movement, the research focuses on the PKK's recent growth - asking how it became capable of revitalising the "buried" body of Kurdishness in Anatolia that has been incorporated (in both demographic and geographical terms) into the Turkicized Republic. Within the framework of the case study method, much of the research is devoted to answering an indirect question: why wasn't it the other Kurdish "national" configurations that came to prominence? To this end, the study tries to appraise the extent of national and non-national ingredients in the make-up of the movement - the leadership, the grassroots and the masses that give their support. The conclusion reached is that the successes and failures of the PKK in bringing about Kurdish opposition in Turkey are fundamentally related to its philosophy of recruitment and organisational diligence, rather than to its scrupulous use of arms or other contextual factors. The form, content and intensity of educational activities give the organisation its strength. This "education war" - concomitant with the contextual tension of Turkey's Kurdish question - produced a "sparking" Apo charisma. In its originating period, the "pure form" of this charisma contributed much to the PKK's ability to mobilise the Kurds. The later "routinised" form of the very charisma has become one of the principal determinants in what is known as the movement's "shrinkage process". It was also found that the substance of the party education - mainly involving Öcalan's talks - embodies a philosophy of human nature (rather than a strictly nationalistic content) in search of the re-appropriation of "human naturalness". In the party leadership's view, this human naturalness has to be extricated from the plague of civilisation's property mechanisms, which apparently have degenerated the humane faculties of man's spiritual structure. However, it ought not to be understood that the intensively worded philosophy depicts the extent of such extrication in the personalities of the cadre body of the Organisation. And the field research indicates that this is the Party's greatest internal contradiction.
Security implications of digitalization: The dangers of data colonialism and the way towards sustainable and sovereign management of environmental data
Creators: name: Stürmer, Matthias
name: Nussbaumer, Jasmin
name: Stöckli, Pascal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: J.1; J.2; K.1; K.4.1; K.4.2; K.4.3; K.4.4; K.5.2

description: Digitalization opens up new opportunities in the collection, analysis, and presentation of data which can contribute to the achievement of the 2030 Agenda and its Sustainable Development Goals (SDGs). In particular, the access to and control of environmental and geospatial data is fundamental to identify and understand global issues and trends. Also immediate crises such as the COVID-19 pandemic demonstrate the importance of accurate health data such as infection statistics and the relevance of digital tools like video conferencing platforms. However, today much of the data is collected and processed by private actors. Thus, governments and researchers depend on data platforms and proprietary systems of big tech companies such as Google or Microsoft. The market capitalization of the seven largest US and Chinese big tech companies has grown to 8.7tn USD in recent years, about twice the size of Germany's gross domestic product (GDP). Therefore, their market power is enormous, allowing them to dictate many rules of the digital space and even interfere with legislations. Based on a literature review and nine expert interviews this study presents a framework that identifies the risks and consequences along the workflow of collecting, processing, storing, using of data. It also includes solutions that governmental and multilateral actors can strive for to alleviate the risks. Fundamental to this framework is the novel concept of "data colonialism" which describes today's trend of private companies appropriating the digital sphere. Historically, colonial nations used to grab indigenous land and exploit the cheap labor of slave workers. In a similar way, today's big tech corporations use cheap data of their users to produce valuable services and thus create enormous market power.
description: This study was prepared under contract to the Federal Department of Foreign Affairs (FDFA). The authors bear responsibility for the content
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (206)]
Creators: name: Guillelmus Capelli
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1388
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Guillelmus Capelli, Antoniter, praeceptor der domus St. Antonii in Piacenza und procurator des Gyrardus Bolcacii, cellerarius des Klosters St. Antonii Uianensis, bestätigt, von Berardus Trocheti, Antoniter, praeceptor der domus St. Antonii Daniate, die Abgaben für das vorangegangene Jahr erhalten zu haben.
Coherent optical control of correlation waves of spins in semiconductors
Creators: name: Ginossar, Eran
name: Levinson, Yehoshua
name: Levit, Shimon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the dynamical fluctuation spectrum of electronic spins in a semiconductor under a steady-state illumination by light containing polarization squeezing correlations. Taking into account quasi-particle lifetime and spin relaxation for this non-equilibrium situation we consider up to fourth order optical effects which are sensitive to the squeezing phases. We demonstrate the possibility to control the spin fluctuations by optically modulating these phases as a function of frequency, leading to a non-Lorentzian spectrum which is very different from the thermal equilibrium fluctuations in n-doped semiconductors. Specifically, in the time-domain spin-spin correlation can exhibit time delays and sign flips originating from the phase modulations and correlations of polarizations, respectively. For higher light intensity we expect a regime where the squeezing correlations will dominate the spectrum.
description: 17 pages, 8 figures
A shock near the virial radius of the Perseus Cluster
Creators: name: Zhu, Zhenlin
name: Simionescu, Aurora
name: Akamatsu, Hiroki
name: Zhang, Xiaoyuan
name: Kaastra, Jelle S.
name: de Plaa, Jelle
name: Urban, Ondrej
name: Allen, Steven W.
name: Werner, Norbert
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Previous X-ray studies of the Perseus Cluster, consisting of 85 Suzaku pointings along eight azimuthal directions, revealed a particularly steep decrease in the projected temperature profile near the virial radius (~r200) towards the northwest (NW). To further explore this shock candidate, another 4 Suzaku observations on the NW edge of the Perseus Cluster have been obtained. These deeper data were designed to provide the best possible control of systematic uncertainties in the spectral analysis. Using the combined Suzaku observations, we have carefully investigated this interesting region by analyzing the spectra of various annuli and extracting projected thermodynamic profiles. We find that the projected temperature profile shows a break near r200, indicating a shock with M = 1.9+-0.3. Corresponding discontinuities are also found in the projected emission measure and the density profiles at the same location. This evidence of a shock front so far away from the cluster center is unprecedented, and may provide a first insight into the properties of large-scale virial shocks which shape the process of galaxy cluster growth.
description: 12 pages, 6 figures, accepted by A&A
Resolvent estimates for operators belonging to exponential classes
Creators: name: Bandtlow, Oscar F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A10 (Primary) 47B06, 47B07 (Secondary)

description: For $a,α>0$ let $E(a,α)$ be the set of all compact operators $A$ on a separable Hilbert space such that $s_n(A)=O(\exp(-an^α))$, where $s_n(A)$ denotes the $n$-th singular number of $A$. We provide upper bounds for the norm of the resolvent $(zI-A)^{-1}$ of $A$ in terms of a quantity describing the departure from normality of $A$ and the distance of $z$ to the spectrum of $A$. As a consequence we obtain upper bounds for the Hausdorff distance of the spectra of two operators in $E(a,α)$.
description: AMS-LaTeX, 20 pages
Slides for Webinar:  Questions and Answers on Storage and Vehicle Charging as Renewables Arrive presented by Mike Jacobs and Peter O''Conner
Creators: Mike Jacobs and Peter O'Conner
Publisher: name: IEEE
Year: 2016

Slides presented at webinar:  Questions and Answers on Storage and Vehicle Charging as Renewables Arrive
This webinar will explore how to value and deploy these technologies, and the policies that will allow these technologies to improve power quality and asset optimization on the distribution system. We will describe some of the questions regarding the regulatory and economic definitions of energy storage, and what performance specifications are suitable or adequate to qualify for value. We will also provide a survey of answers provided in pilot demonstrations and deployments designed to improve grid integration of renewable generation through vehicle charging.
Two-Qubit Separabilities as Piecewise Continuous Functions of Maximal Concurrence
Creators: name: Slater, Paul B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The generic real (b=1) and complex (b=2) two-qubit states are 9-dimensional and 15-dimensional in nature, respectively. The total volumes of the spaces they occupy with respect to the Hilbert-Schmidt and Bures metrics are obtainable as special cases of formulas of Zyczkowski and Sommers. We claim that if one could determine certain metric-independent 3-dimensional "eigenvalue-parameterized separability functions" (EPSFs), then these formulas could be readily modified so as to yield the Hilbert-Schmidt and Bures volumes occupied by only the separable two-qubit states (and hence associated separability probabilities). Motivated by analogous earlier analyses of "diagonal-entry-parameterized separability functions", we further explore the possibility that such 3-dimensional EPSFs might, in turn, be expressible as univariate functions of some special relevant variable--which we hypothesize to be the maximal concurrence (0 < C <1) over spectral orbits. Extensive numerical results we obtain are rather closely supportive of this hypothesis. Both the real and complex estimated EPSFs exhibit clearly pronounced jumps of magnitude roughly 50% at C=1/2, as well as a number of additional matching discontinuities.
description: 12 pages, 7 figures, new abstract, revised for J. Phys. A
Absorption of high frequency oscillations and its relation to emissivity reduction
Creators: name: Waidele, Matthias
name: Roth, Markus
name: Vigeesh, Gangadharan
name: Glogowski, Kolja
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Sunspots are known to be strong absorbers of solar oscillation modal power. The most convincing way to demonstrate this is done via Fourier-Hankel decomposition (FHD), where the local oscillation field is separated into in- and outgoing waves, showing the reduction in power. Due to the Helioseismic and Magnetic Imager's high-cadence Doppler measurements, power absorption can be investigated at frequencies beyond the acoustic cutoff frequency. We perform an FHD on five sunspot regions and two quiet-Sun control regions and study the resulting absorption spectra $α_\ell(ν)$, specifically at frequencies $ν$ > 5.3 mHz. We observe an unreported high-frequency absorption feature, which only appears in the presence of a sunspot. This feature is confined to phase speeds of one-skip waves whose origins coincide with the sunspot's center, with $v_{ph}$ = 85.7 km/s in this case. By employing a fit to the absorption spectra at a constant phase speed, we find that the peak absorption strength $α_{max}$ lies between 0.166 and 0.222 at a noise level of about 0.009 (5%). The well-known absorption along ridges at lower frequencies can reach up to $α_{max}\approx$ 0.5. Thus our finding in the absorption spectrum is weaker, but nevertheless significant. From first considerations regarding the energy budget of high-frequency waves, this observation can likely be explained by the reduction of emissivity within the sunspot. We derive a simple relation between emissivity and absorption. We conclude that sunspots yield a wave power absorption signature (for certain phase speeds only), which may help in understanding the effect of strong magnetic fields on convection and source excitation and potentially in understanding the general sunspot subsurface structure.
Slides for Webinar:  Why an Active Grid Demands Greater Collaboration presented by Dave Daly
Creators: Dave Daly
Publisher: name: IEEE
Year: 2017

Slides presented at webinar:  Why an Active Grid Demands Greater Collaboration
Utilities have been on a digitization journey for many years, but it's now time for a transformational step change. Namely, an evolution to a decentralized, collaborative model over traditional, centralized command and control models - where edge, mobile and cloud solutions are used to redesign utility business processes and operational practices. Distributed generation, renewables, smart grids, storage and prosumers are accelerating the rate of change as well as creating a new level of complexity to manage - traditional command and control operational models can only get utilities so far. It's time to move away from the operational models of the past - it's time for a paradigm shift to meet the new level of change and complexity required to manage the active grid. The active grid of today and tomorrow demands greater collaboration - from the control room out to the field and the grid edge - for utilities to successfully meet the challenges of grid modernization and digital transformation.
Slides for Webinar:  DER Integration with the Electric Power System: Status update on IEEE 1547 Standard Revision and Utility Perspective presented by Babak Enayati
Creators: Babak Enayati
Publisher: name: IEEE
Year: 2016

Slides presented at webinar:  DER Integration with the Electric Power System: Status update on IEEE 1547 Standard Revision and Utility Perspective
This webinar will introduce the IEEE 1547 Standard for Interconnecting Distributed Resources with Electric Power Systems. The participants will learn about the status of the standard revision and the recent proposed draft changes to the standard i. e. voltage regulation, response to abnormal system conditions (including voltage and frequency ride through), power quality, etc. The participants will also learn about the utility concerns/solutions to adopt the revised IEEE 1547 standard.
ILIAS Online-Kurs und Podcast ("Teaser") zum Seminar Analyse deutschsprachiger Popmusiktexte
Creators: name: Rottgeri, André
Publisher: name: Digital Learning Media Pro - Praxisberichte zum Einsatz digitaler Medien an der Hochschule
Year: 2017

description: Dieses Paper bezieht sich auf ein Online-Learning Projekt, das im Rahmen des Kurses Digital Learning Media Pro (DLMP) im SS 2016 von Florian Tettenhammer an der Universität Passau veranstaltet wurde. In Bezug auf das Abschlussprojekt fiel die Entscheidung hierfür einen Podcast ("Teaser") zum Seminar: Analyse deutschsprachiger Popmusiktexte (Lehrstuhl für Deutsche Sprachwissenschaft, Prof. Dr. Harnisch, Universität Passau) zu produzieren, der in einen dazugehörigen ILIAS Online-Kurs eingebaut wurde. Während der ILIAS-Kurs der Seminarorganisation und der Vor- und Nachbereitung der einzelnen Sitzungen diente, sollte der Podcast hauptsächlich zur "Werbung" für die Veranstaltung eingesetzt werden. Darüber hinaus wurde das Seminar auch in eine Fortbildung der hochschuldidaktischen Weiterbildung (Universität Passau, Lehre+, Aufbaustufe) eingebunden und sowohl durch Hospitationen der Seminarleiterinnen (Frau Dr. Susanne Günther und Frau Alexandra Schick) als auch durch die Hospitation eines Kollegen ergänzt.
description: Digital Learning Media Pro - Praxisberichte zum Einsatz digitaler Medien an der Hochschule, Nr. 2 (2016): DLMP Praxisberichte 2016
Slides for Webinar: Ethical Hacking in the Electric Grid by Tim Yardley
Creators: Tim Yardley
Publisher: name: IEEE
Year: 2017

Slides presented at Ethical Hacking in the Electric Grid
This webinar will cover the basics of ethical assessment in the electric grid, detailing the what, why, and how in this domain. Benefits and drawbacks of engaging in an assessment and some guidance on tools that can be used to track progress and prioritize future efforts.
Slides for Webinar:  The Learning Path Toward a Smart Grid - Changes in Standard and Business Practices Post 2018 presented by Mark Siira
Creators: Mark Siira
Publisher: name: IEEE
Year: 2017

Slides presented at webinar:  The Learning Path Toward a Smart Grid - Changes in Standard and Business Practices Post 2018
This webinar will provide the attendees with a glimpse of some changes that will occur in business practices, post-2018. We will review the drivers of the oncoming change and some common themes that are emerging in the standards requirements and some key topics such as interoperability, interconnection, and commissioning.

We will briefly review the evolution of the smart grid standards to date.

We will review what standards are being developed and the benefits of these. We will highlight some successes and challenges we face moving forward.

Finally, we will review some of the business implications of these changes from the perspective of equipment manufacturers, developers and service providers.
On extensions of covariantly finite subcategories
Creators: name: Chen, Xiao-Wu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In \cite{GT}, Gentle and Todorov proved that in an abelian category with enough projective objects, the extension subcategory of two covariantly finite subcategories is still covariantly finite. We give an counterexample to show that Gentle-Todorov's theorem may fail in arbitrary abelian categories; we also prove that a triangulated version of Gentle-Todorov's theorem holds; we make applications of Gentle-Todorov's theorem to obtain short proofs to a classical result by Ringel and a recent result by Krause and Solberg.
description: Comments are welcome!