cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Increasing Exclusion: The Pauli Exclusion Principle and Energy Conservation for Bound Fermions are Mutually Exclusive
Creators: name: Phillips, Jonathan
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A review of those forms of standard quantum mechanics that include the Pauli Exclusion Principle as it is applied to atomic species, (that is versions of quantum that are multi-electron and multi-orbital) shows they are not consistent with energy conservation. Particular focus is given to helium in which it is shown that energy conservation is not consistent with current models. If the two electrons in the ground state, per current theory, are at the same energy as the ionization energy, it is demonstrated that according to the standard theory approximately 30 eV are lost during ionization, or alternatively, about 30 eV of energy are created during ionization/electron attachment. The same issue of energy loss during relaxation of energy levels following ionization is shown to exist for all atomic species, thus demonstrating that the Pauli Exclusion Principle (PEP) and energy conservation are not consistent for any atomic species for current forms of distinguishable electron forms of quantum theory. Only that form of quantum that has a single orbital, and for which only one ionization energy can be computed (that is the original Schrodinger form), is consistent with an energy balance. However, this form is not consistent with common spectroscopy results, and it is argued PEP has no meaning in this form of quantum theory. In contrast a new model, Classical Quantum Mechanics (CQM), invented by R. Mills,, following modification, is consistent with all spectroscopy and energy conservation for bound electron systems. This new model is based on the validity of Maxwell s Equations and Newton s Laws at all scales. Detailed, and remarkably simple, computations for determining the ground state energy levels in one and two electron systems using CQM are presented. Agreements with data are excellent.
description: 12,000 words, 2 tables, intended to facilitate paradigm shift
Iterative Refinement for Real-Time Multi-Robot Path Planning
Creators: name: Okumura, Keisuke
name: Tamura, Yasumasa
name: Defago, Xavier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We study the iterative refinement of path planning for multiple robots, known as multi-agent pathfinding (MAPF). Given a graph, agents, their initial locations, and destinations, a solution of MAPF is a set of paths without collisions. Iterative refinement for MAPF is desirable for three reasons: 1)~optimization is intractable, 2)~sub-optimal solutions can be obtained instantly, and 3)~it is anytime planning, desired in online scenarios where time for deliberation is limited. Despite the high demand, this is under-explored in MAPF because finding good neighborhoods has been unclear so far. Our proposal uses a sub-optimal MAPF solver to obtain an initial solution quickly, then iterates the two procedures: 1)~select a subset of agents, 2)~use an optimal MAPF solver to refine paths of selected agents while keeping other paths unchanged. Since the optimal solvers are used on small instances of the problem, this scheme yields efficient-enough solutions rapidly while providing high scalability. We also present reasonable candidates on how to select a subset of agents. Evaluations in various scenarios show that the proposal is promising; the convergence is fast, scalable, and with reasonable quality.
description: 8 pages, 10 figures, 1 table, to be presented at IROS-21, Sep 2021, Virtual Conference
Theory and Applications of Infinitesimal Dipole Models for Computational Electromagnetics
Creators: name: Mikki, Said M.
name: Kishk, Ahmed A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The recently introduced quantum particle swarm optimization (QPSO) algorithm is employed to find infinitesimal dipole models (IDM) for antennas with known near-fields (measured or computed). The IDM can predict accurately both the near-fields and the far- fields of the antenna. A theory is developed to explain the mechanism behind the IDM using the multipole expansion method. The IDM obtained from single frequency solutions is extrapolated over a frequency range around the design frequency. The method is demonstrated by analyzing conductingand dielectric- type antennas. A calibration procedure is proposed to systematically implement infinitesimal dipoles within existing MOM codes. The interaction of the IDM with passive and active objects is studied through several examples. The IDM proved to predict the interaction efficiently. A closed-form expression for the mutual admittance between similar or dissimilar antennas, with arbitrary orientations and/or locations, is derived using the reaction theorem.
Temporally Dense Ray Tracing
Creators: name: Andersson, Pontus
name: Nilsson, Jim
name: Salvi, Marco
name: Spjut, Josef
name: Akenine-Möller, Tomas
Publisher: name: The Eurographics Association
Year: 2019
Subjects: I.3.7 [Computer Graphics]
Three Dimensional Graphics and Realism
Ray Tracing

description: We present a technique for real-time ray tracing with the goal of reaching 240 frames per second or more. The core idea is to trade spatial resolution for faster temporal updates in such a way that the display and human visual system aid in integrating high-quality images. We use a combination of frameless and interleaved rendering concepts together with ideas from temporal antialiasing algorithms and novel building blocks-the major one being adaptive selection of pixel orderings within tiles, which reduces spatiotemporal aliasing significantly. The image quality is verified with a user study. Our work can be used for esports or any kind of rendering where higher frame rates are needed.
description: High-Performance Graphics - Short Papers
description: Doing More With Each Ray
description: 33
description: 38
description: Pontus Andersson, Jim Nilsson, Marco Salvi, Josef Spjut, and Tomas Akenine-Möller
description: Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-Ray Tracing
Automated Design of Pulse Sequences for Magnetic Resonance Fingerprinting using Physics-Inspired Optimization
Creators: name: Jordan, Stephen P.
name: Hu, Siyuan
name: Rozada, Ignacio
name: McGivney, Debra F.
name: Boyacioglu, Rasim
name: Jacob, Darryl C.
name: Huang, Sherry
name: Beverland, Michael
name: Katzgraber, Helmut G.
name: Troyer, Matthias
name: Griswold, Mark A.
name: Ma, Dan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetic Resonance Fingerprinting (MRF) is a method to extract quantitative tissue properties such as T1 and T2 relaxation rates from arbitrary pulse sequences using conventional magnetic resonance imaging hardware. MRF pulse sequences have thousands of tunable parameters which can be chosen to maximize precision and minimize scan time. Here we perform de novo automated design of MRF pulse sequences by applying physics-inspired optimization heuristics. Our experimental data suggests systematic errors dominate over random errors in MRF scans under clinically-relevant conditions of high undersampling. Thus, in contrast to prior optimization efforts, which focused on statistical error models, we use a cost function based on explicit first-principles simulation of systematic errors arising from Fourier undersampling and phase variation. The resulting pulse sequences display features qualitatively different from previously used MRF pulse sequences and achieve fourfold shorter scan time than prior human-designed sequences of equivalent precision in T1 and T2. Furthermore, the optimization algorithm has discovered the existence of MRF pulse sequences with intrinsic robustness against shading artifacts due to phase variation.
description: Journal version. 15 pages plus 30 pages for appendices and references
Patch Textures: Hardware Implementation of Mesh Colors
Creators: name: Mallett, Ian
name: Seiler, Larry
name: Yuksel, Cem
Publisher: name: The Eurographics Association
Year: 2019

description: Mesh colors provide an effective alternative to standard texture mapping. They significantly simplify the asset production pipeline by removing the need for defining a mapping and eliminate rendering artifacts due to seams. This paper addresses the problem that using mesh colors for real-time rendering has not been practical, due to the absence of hardware support. We show that it is possible to provide full hardware texture filtering support for mesh colors with minimal changes to existing GPUs by introducing a hardware-friendly representation for mesh colors that we call patch textures. We discuss the hardware modifications needed for storing and filtering patch textures.
description: High-Performance Graphics - Short Papers
description: Rasterization Techniques and Ray-Tracing Applications
description: 39
description: 44
description: Ian Mallett, Larry Seiler, and Cem Yuksel
A Practical and Efficient Approach for Correct Z-Pass Stencil Shadow Volumes
Creators: name: Usta, Baran
name: Scandolo, Leonardo
name: Billeter, Markus
name: Marroquim, Ricardo
name: Eisemann, Elmar
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Computing methodologies
Rendering
Visibility

description: Shadow volumes are a popular technique to compute pixel-accurate hard shadows in 3D scenes. Many variants exist that trade off accuracy and efficiency. In this work, we present an artifact-free, efficient, and easy-to-implement stencil shadow volume method. We compare our method to established stencil shadow volume techniques and show that it outperforms the alternatives.
description: High-Performance Graphics - Short Papers
description: Rasterization Techniques and Ray-Tracing Applications
description: 45
description: 49
description: Baran Usta, Leonardo Scandolo, Markus Billeter, Ricardo Marroquim, and Elmar Eisemann
description: CCS Concepts: Computing methodologies --> Rendering; Visibility
Μελέτη της Εξελικτικής Πορείας του Web
Creators: name: Καρβουνάς, Γεώργιος Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Διαδίκτυο
Κυβερνοχώρος
Εξέλιξη
Web
Cyberspace
Evolution

description: Την τελευταία δεκαετία τόσο η ποσότητα όσο και η “ποιότητα” της διαχεόμενης πληροφορίας στον Παγκόσμιο Ιστό μεταβάλλεται εκθετικά. Η κίνηση, η αποθήκευση και η παρουσίαση των δεδομένων στο Διαδίκτυο έχει αλλάξει σημαντικά, ενώ πλέον ο τύπος της πληροφορίας που διαχέεται δεν αφορά μόνο στατικό κείμενο αλλά και πολυμεσικό περιεχόμενο πραγματικού χρόνου. Ο χρήστης από την πλευρά του δεν είναι απλός θεατής, αλλά συμμετέχει ενεργά στην εξελικτική πορεία του Παγκόσμιου Ιστού με διάφορες τεχνολογίες που του παρέχονται. Στην παρούσα εργασία μελετάται η εξέλιξη των χαρακτηριστικών δύο θεματικών κατηγοριών του ελληνικού Web, «Νέα» και «Αγορές» και η σύγκρισή τους με τις αντίστοιχες κατηγορίες του ιταλικού Web χρησιμοποιώντας αρχειοθετημένα στιγμιότυπα ιστοσελίδων του Internet Archive. Στο πρώτο κεφάλαιο της παρούσης εργασίας γίνεται μια εισαγωγή στο θέμα τη διπλωματικής εργασίας καθώς και αναφορά σε αντίστοιχες μελέτες, ενώ στο δεύτερο αναλύονται οι υπό εξέταση τεχνολογίες διαδικτύου. Η τρόπος επιλογής του δείγματος των ιστοσελίδων καθώς και η μεθοδολογία επεξεργασίας των δεδομένων αναπτύσ¬σονται στο τρίτο κεφάλαιο. Στο κεφάλαιο 4 γίνεται παρουσίαση των αποτελεσμάτων και ανάλυση της εξελικτικής πορείας των τεχνολογιών του ελληνικού κυβερνοχώρου καθώς και σύγκριση με τον αντίστοιχο ιταλικό, ενώ το πέμπτο κεφάλαιο (τελευταίο) καταγράφει τα συμπεράσματα της εργασίας.
description: Over the last decade either the quantity or the quality of the information diffused has increased exponentially. The traffic, the storage and the presentation of data in Web has substantially changed while the type of diffused information is not limited to static text but includes real-time multimedia content as well. The user is not anymore just a reader of the content but participates actively in the evolution of the Web through the available technologies. This study focuses on the evolution of the characteristics of two thematic groups of websites, “News” and “Shopping” and the comparison with the corresponding Italian ones using the archived snapshots of websites available from the Internet Archive. The first chapter of this paper is an introduction in the subject of the study and cites relevant studies that tackle the Web evolution. The second chapter includes description of the technologies used in Web. The methodology of selecting the appropriate samples of websites and the processing of the Internet Archive snapshots are exposed at the third chapter. The fourth chapter includes the presentation of the results and the assessment of the evolution of both the Greek and the Italian thematic categories. The fifth chapter is the conclusion of the study.
A Study on Overview of Goods and Services Tax (GST) in India
Creators: name: Basavaraja Eliganur, Kavya G B, Shweta
Publisher: name: Zenodo
Year: 2024

description: The Goods and Services Tax (GST) is a comprehensive indirect tax reform introduced in India on July 1, 2017. This system was aimed at simplifying and unifying India's complex indirect tax structure by replacing multiple taxes like VAT, excise duty, and service tax with a single tax regime. The GST operates on a dual system, encompassing both the Central and State governments. This paper provides an overview of GST in India, examining its historical evolution, features, and its economic and policy implications. Additionally, numerical data on GST revenue trends, the number of registered taxpayers, and the impact on various sectors are discussed. The study also highlights challenges and areas for improvement, offering an in-depth understanding of the GST system's role in India's economic development.
Working times in atypical forms of employment: the special case of part-time work
Creators: name: Letrémy, Patrick
name: Cottrell, Marie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In the present article, we attempt to devise a typology of forms of part-time employment by applying a widely used neuronal methodology called Kohonen maps. Starting out with data that we describe using category-specific variables, we show how it is possible to represent observations and the modalities of the variables that define them simultaneously, on a single map. This allows us to ascertain, and to try to describe, the main categories of part-time employment.
description: Chapitre 5, \`{a} la suite de la conf\'{e}rence ACSEG 2001 \`{a} Rennes
Indian art/Aboriginal title
Creators: name: Crosby, Marcia Violet
Publisher: name: University of British Columbia
Year: 2009

description: In 1967, the Vancouver Art Gallery held an exhibition entitled Arts of the Raven: Masterworks by the Northwest Coast Indian in celebration of Canada’s centennial. The following thesis discusses the way in which the curators of the Arts of the Raven exhibit constructed the Northwest Coast “Indian-Master” artist as a strategy that figured into a larger, shifting cultural field. The intention of the exhibit organizers was to contribute to the shift from ethnology to art. While this shift can be dated to the turn of the century, this thesis deals primarily with the period from 1958-1967, a decade described by the preeminent First Nations’ political leader, George Manuel, as the time of “the rediscovery of the Indian”. How the formation of an Indian-master artist (and his masterworks) intervened in art historical practice, and dovetailed with the meaning that the affix “Indian” carried in the public sphere, is considered. In the 1960s, this meaning was fostered, in part, through a reassessment of Canada’s history in preparation for the centennial. This event drew attention to the historical relationship between Canada and aboriginal peoples through public criticism of the government by public interest groups, Indian organizations, and civil rights and anti-poverty movements. The category of mastery, which functions as a sign of class, taste and prestige in European art canons, “included” the Indian under the rubric of white male genius. Yet the Indian as a sign of upward mobility was incommensurable with the Native reality in Canada at the time. In other words, the exhibit produced an abstract equality that eclipsed the concrete inequality most First Nations peoples were actually experiencing. This thesis concludes by arguing that the Arts of the Raven exhibit came to serve the important purpose of creating a space for the “unique individual-Indian” from which collective political First Nations voices would speak.
Importance of dynamic lattice effects for crystal field excitations in quantum spin ice candidate Pr$_2$Zr$_2$O$_7$
Creators: name: Xu, Yuanyuan
name: Man, Huiyuan
name: Tang, Nan
name: Baidya, Santu
name: Zhang, Hongbin
name: Nakatsuji, Satoru
name: Vanderbilt, David
name: Drichko, Natalia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Pr$_2$Zr$_2$O$_7$ is a pyrochlore quantum spin-ice candidate. Using Raman scattering spectroscopy we probe crystal electric field excitations of Pr$^{3+}$, and demonstrate the importance of their interactions with the lattice. We identify a vibronic interaction with a phonon that leads to a splitting of a doublet crystal field excitation at around 55~meV. We also probe a splitting of the non-Kramers ground state doublet of Pr$^{3+}$ by observing a double line of the excitations to the first excited singlet state $E^0_g \rightarrow A_{1g}$. We show that the splitting has a strong temperature dependence, with the doublet structure most prominent between 50~K and 100~K, and the weight of one of the components strongly decreases on cooling. We suggest a static or dynamic deviation of Pr$^{3+}$ from the position in the ideal crystal structure can be the origin of the effect, with the deviation strongly decreasing at low temperatures.
description: 6 pages, 3 figures
Real-Time Ray Tracing on Head-Mounted-Displays for Advanced Visualization of Sheet Metal Stamping Defects
Creators: name: Dietrich, Andreas
name: Wurster, Jan
name: Kam, Eric
name: Gierlinger, Thomas
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Computing methodologies
Rendering
Ray tracing
Scientific visualization
Human
centered computing
Virtual reality
Visualization systems and tools

description: Although interactive ray tracing has been around since the late 1990s, real-time frame rates had so far only been feasible for low and mid-size screen resolutions. Recent developments in GPU hardware, that specifically accelerate ray tracing, make it possible for the first time to target head-mounted displays (HMDs), which require constant high frame rates as well as high resolution images for each eye. This allows for utilizing ray tracing algorithms in novel virtual reality scenarios, which are impractical to do with rasterization. In this short paper we present our experiences of applying real-time ray tracing to the problem of detecting cosmetic defects in sheet metal stamping simulations by creating a virtual light cage.
description: High-Performance Graphics - Short Papers
description: Rasterization Techniques and Ray-Tracing Applications
description: 51
description: 55
description: Andreas Dietrich, Jan Wurster, Eric Kam, and Thomas Gierlinger
description: CCS Concepts: Computing methodologies --> Rendering; Ray tracing; Scientific visualization; Human-centered computing --> Virtual reality; Visualization systems and tools
Solving Variational Problems Using Nonlinear Rotation-invariant Coordinates
Creators: name: Sassen, Josua
name: Heeren, Behrend
name: Hildebrandt, Klaus
name: Rumpf, Martin
Publisher: name: The Eurographics Association
Year: 2019

description: We consider Nonlinear Rotation-Invariant Coordinates (NRIC) representing triangle meshes with fixed combinatorics as a vector stacking all edge lengths and dihedral angles. Previously, conditions for the existence of vertex positions matching given NRIC have been established. We develop the machinery needed to use NRIC for solving geometric optimization problems. Moreover, we introduce a fast and robust algorithm that reconstructs vertex positions from close-to integrable NRIC. Our experiments underline that NRIC-based optimization is especially effective for near-isometric problems.
description: Symposium on Geometry Processing 2019- Posters
description: Posters
description: 1
description: 2
description: Josua Sassen, Behrend Heeren, Klaus Hildebrandt, and Martin Rumpf
Intrinsic Superconducting Diode Effect
Creators: name: Daido, Akito
name: Ikeda, Yuhei
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stimulated by the recent experiment [F. Ando et al., Nature 584, 373 (2020)], we propose an intrinsic mechanism to cause the superconducting diode effect (SDE). SDE refers to the nonreciprocity of the critical current for the metal-superconductor transition. Among various mechanisms for the critical current, the depairing current is known to be intrinsic to each material and has recently been observed in several superconducting systems. We clarify the temperature scaling of the nonreciprocal depairing current near the critical temperature and point out its significant enhancement at low temperatures. It is also found that the nonreciprocal critical current shows sign reversals upon increasing the magnetic field. These behaviors are understood by the nonreciprocity of the Landau critical momentum and the change in the nature of the helical superconductivity. The intrinsic SDE unveils the rich phase diagram and functionalities of noncentrosymmetric superconductors.
description: 5+4 pages, 8 figures
The Structure of Halos: Implications for Group and Cluster Cosmology
Creators: name: Lukić, Zarija
name: Reed, Darren
name: Habib, Salman
name: Heitmann, Katrin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The dark matter halo mass function is a key repository of cosmological information over a wide range of mass scales, from individual galaxies to galaxy clusters. N-body simulations have established that the friends-of-friends (FOF) mass function has a universal form to a surprising level of accuracy (< 10%). The high-mass tail of the mass function is exponentially sensitive to the amplitude of the initial density perturbations, the mean matter density parameter, Omega_m, and to the dark energy controlled late-time evolution of the density field. Observed group and cluster masses, however, are usually stated in terms of a spherical overdensity (SO) mass which does not map simply to the FOF mass. Additionally, the widely used halo models of structure formation -- and halo occupancy distribution descriptions of galaxies within halos -- are often constructed exploiting the universal form of the FOF mass function. This again raises the question of whether FOF halos can be simply related to the notion of a spherical overdensity mass. By employing results from Monte Carlo realizations of ideal Navarro-Frenk-White (NFW) halos and N-body simulations, we study the relationship between the two definitions of halo mass. We find that the vast majority of halos (80-85%) in the mass-range 10^{12.5}-10^{15.5} M_sun/h indeed allow for an accurate mapping between the two definitions (~ 5%), but only if the halo concentrations are known. Nonisolated halos fall into two broad classes: those with complex substructure that are poor fits to NFW profiles and those ``bridged'' by the (isodensity-based)FOF algorithm. A closer investigation of the bridged halos reveals that the fraction of these halos and their satellite mass distribution is cosmology dependent. (abridged)
description: Submitted to ApJ
Can we observe the QCD phase transition-generated gravitational waves through pulsar timing arrays?
Creators: name: Brandenburg, Axel
name: Clarke, Emma
name: He, Yutong
name: Kahniashvili, Tina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We perform numerical simulations of gravitational waves (GWs) induced by hydrodynamic and hydromagnetic turbulent sources that might have been present at cosmological quantum chromodynamic (QCD) phase transitions. For turbulent energies of about 4% of the radiation energy density, the typical scale of such motions may have been a sizable fraction of the Hubble scale at that time. The resulting GWs are found to have an energy fraction of about $10^{-9}$ of the critical energy density in the nHz range today and may already have been observed by the NANOGrav collaboration. This is further made possible by our findings of shallower spectra proportional to the square root of the frequency for nonhelical hydromagnetic turbulence. This implies more power at low frequencies than for the steeper spectra previously anticipated. The behavior toward higher frequencies depends strongly on the nature of the turbulence. For vortical hydrodynamic and hydromagnetic turbulence, there is a sharp drop of spectral GW energy by up to five orders of magnitude in the presence of helicity, and somewhat less in the absence of helicity. For acoustic hydrodynamic turbulence, the sharp drop is replaced by a power law decay, albeit with a rather steep slope. Our study supports earlier findings of a quadratic scaling of the GW energy with the magnetic energy of the turbulence and inverse quadratic scaling with the peak frequency, which leads to larger GW energies under QCD conditions.
description: 14 pages, 8 figures, 3 tables; page numbers, figure captions, references updated and added; discussions expanded; results unchanged and PRD accepted
Limits of BC-type orthogonal polynomials as the number of variables goes to infinity
Creators: name: Okounkov, Andrei
name: Olshanski, Grigori
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C52; 43A90

description: We describe the asymptotic behavior of the multivariate BC-type Jacobi polynomials as the number of variables and the Young diagram indexing the polynomial go to infinity. In particular, our results describe the approximation of the spherical functions of the infinite-dimensional symmetric spaces of type B,C,D or BC by the spherical functions of the corresponding finite-dimensional symmetric spaces. Similar results for the Jack polynomials were established in our earlier paper (Intern. Math. Res. Notices 1998, no. 13, 641-s682; arXiv:q-alg/9709011). The main results of the present paper were obtained in 1997.
description: 39 pages, to appear in: "Jack, Hall-Littlewood and Macdonald polynomials", Contemporary Mathematics, AMS
Η αυτοκράτειρα Θεοδώρα και η παρουσία της στην Απόκρυφη Ιστορία και τις άλλες ιστορικές πηγές
Creators: name: Γιακουμή, Κυριακή Ασκληπιού
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Θεοδώρα
Ιουστινιανός
Απόκρυφη Ιστορία
Theodora
Justinian
Secret History

description: Η παρούσα εργασία με θέμα "Η αυτοκράτειρα Θεοδώρα και η παρουσία της στην Απόκρυφη Ιστορία και τις άλλες ιστορικές πηγές", αναπτύσσεται σε τρία μέρη και αποτελεί μια προσπάθεια έρευνας της πολυσχιδούς προσωπικότητας της αυτοκράτειρας Θεοδώρας, συζύγου του αυτοκράτορα Ιουστινιανού (527-565),
description: This thesis on “Empress Theodora and her presence in Secret History and other historical sources”, evolves in three parts and is an effort to survey the multifarious personality of empress Theodora, the wife of Emperor Justinian I (527-565), as revealed through a comparative study, among the Secret History and the generally hostile sources and other friendly to the empress Theodora historical sources. The study focuses on investigating not only the youthful years of the Theodora but also what she did as an empress after her rise to the highest position of the Empire. In addition it examines the life and work of the historian Procopius of Caesarea , and simultaneously it focuses on the Secret History, in which the historian with shameless sincerity gives a bitterly hostile portrait of the Emperor Justinian I (527-565) and his wife Theodora and the general Belisarius and his wife Antonina, too. Also, it should be noted that the thesis is based on the research on the byzantine, syriac and latin sources. In the first part, the thesis focuses on the presentation of historian Procopius’ life, who is recognized as the major historian and whose work is the main reliable source for the history of Justinian's reign (527-565). Furthermore this chapter examines briefly the three works of Procopius, the Wars, the Secret History and the Buildings. The second part of the thesis aims at presenting the other figures–except from the empress Theodora- of the Secret History. Finally, in the third part is written the main objective of this thesis, which revolves around the life and personality of the Empress Theodora. Particularly this chapter refers to the origin of the Empress and her childhood and teenage years in the world of the hippodrome and the stage. It also refers to the complex conditions under which she met, charmed and finally married the successor of the imperial throne. Moreover this study deals extensively with what Theodora did after her rise on the imperial throne. At the end of the study, it is also mentioned the causes which leads to the premature death of the empress.
Optimal spin squeezing inequalities detect bound entanglement in spin models
Creators: name: Toth, Geza
name: Knapp, Christian
name: Gühne, Otfried
name: Briegel, Hans J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We determine the complete set of generalized spin squeezing inequalities. These are entanglement criteria that can be used for the experimental detection of entanglement in a system of spin-1/2 particles in which the spins cannot be individually addressed. They can also be used to show the presence of bound entanglement in the thermal states of several spin models.
description: 5 pages, 2 figures, 1 table; small changes, published version
Remedy of some cosmological tensions via effective phantom-like behavior of interacting vacuum energy
Creators: name: Kumar, Suresh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Since physics of the dark sector components of the Universe is not yet well-understood, the phenomenological studies of non-minimal interaction in the dark sector could possibly pave the way to theoretical and experimental progress in this direction. Therefore, in this work, we intend to explore some features and consequences of a phenomenological interaction in the dark sector. We use the Planck 2018, BAO, JLA, KiDS and HST data to investigate two extensions of the base $Λ$CDM model, viz., (i) we allow the interaction among vacuum energy and dark matter, namely the I$Λ$CDM model, wherein the interaction strength is proportional to the vacuum energy density and expansion rate of the Universe, and (ii) the I$Λ$CDM scenario with free effective neutrino mass and number, namely the $ν$I$Λ$CDM model. We also present comparative analyses of the interaction models with the companion models, namely, $Λ$CDM, $νΛ$CDM, $w$CDM and $νw$CDM. In both the interaction models, we find non-zero coupling in the dark sector up to 99\% CL with energy transfer from dark matter to vacuum energy, and observe a phantom-like behavior of the effective dark energy without actual ``phantom crossing". The well-known tensions on the cosmological parameters $H_0$ and $σ_8$, prevailing within the $Λ$CDM cosmology, are relaxed significantly in these models wherein the $ν$I$Λ$CDM model shows consistency with the standard effective neutrino mass and number. Both the interaction models find a better fit to the combined data compared to the companion models under consideration.
description: 13 pages, 3 figures and 1 table; New section added and improved the discussions; To appear in Physics of the Dark Universe
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 13/2019
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: 080

description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 17. Juli 2019 für das Unterrichtsfach Katholische Religionslehre für ein Lehramt an Grundschulen zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 17. Juli 2019 für das Unterrichtsfach Katholische Religionslehre für ein Lehramt an Haupt-, Real-, Sekundar- und Gesamtschulen zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 17. Juli 2019 für das Unterrichtsfach Katholische Religionslehre für ein Lehramt für sonderpädagogische Förderung zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 17. Juli 2019 für das Unterrichtsfach Sozialwissenschaften für ein Lehramt an Gymnasien und Gesamtschulen zur Prüfungsordnung für den Lehramtsbachelorstudiengang
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2019, 13
The Relativistic Spherical Top as a Massive Twistor
Creators: name: Kim, Joon-Hwi
name: Kim, Jung-Wook
name: Lee, Sangmin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove the equivalence between two traditional approaches to the classical mechanics of a massive spinning particle in special relativity. One is the spherical top model of Hanson and Regge, recast in a Hamiltonian formulation with improved treatment of covariant spin constraints. The other is the massive twistor model, slightly generalized to incorporate the Regge trajectory relating the mass to the total spin angular momentum. We establish the equivalence by computing the Dirac brackets of the physical phase space carrying three translation and three rotation degrees of freedom. Lorentz covariance and little group covariance uniquely determine the structure of the physical phase space. The Regge trajectory does not affect the phase space but enters the equations of motion. Upon quantization, the twistor model produces a spectrum that agrees perfectly with the massive spinor-helicity description proposed by Arkani-Hamed, Huang and Huang for scattering amplitudes for all masses and spins.
description: 35 pages; v2. minor clarifications, references added; v3. more clarifications and references
Adaptive Block Coordinate Descent for Distortion Minimization
Creators: name: Naitsat, Alexander
name: Zeevi, Yehoshua Y.
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Theory of computation
Nonconvex optimization
Computing methodologies
Computer graphics

description: We present a new unified algorithm for optimizing geometric energies and computing positively oriented simplicial mappings. Its major improvements over the state-of-the-art are: adaptive partition of vertices into coordinate blocks with the blended local-global strategy, introduction of new distortion energies for repairing inverted and degenerated simplices, modification of standard rotation-invariant measures, introduction of displacement norm for improving convergence criteria and for controlling the proposed local-global blending. Together these improvements form the basis for Adaptive Block Coordinate Descent (ABCD) algorithm aimed at robust geometric optimization. Our algorithm achieves state-of-the-art results in distortion minimization, even with highly distorted invalid initializations that contain thousands of inverted and degenerated elements. We show over a wide range of 2D and 3D problems that ABCD is more robust than existing techniques in locally injective mappings.
description: Symposium on Geometry Processing 2019- Posters
description: Posters
description: 3
description: 4
description: Alexander Naitsat and Yehoshua Y. Zeevi
description: CCS Concepts: Theory of computation --> Nonconvex optimization; Computing methodologies --> Computer graphics
Visual Assessments of Functional Maps
Creators: name: Melzi, S.
name: Marin, R.
name: Musoni, P.
name: Castellani, U.
name: Tarini, M.
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Mathematics of computing
Functional analysis
Computing methodologies
Shape modeling
Shape analysis

description: Shape-matching is one central topic in Geometry Processing, with numerous important applications in Computer Graphics andshape analysis, such as shape registration, shape interpolation, modeling, information transfer and many others. A recent andsuccessful class of shape-matching methods is based on the functional maps framework [OBCS*12] where the correspondencesbetween the two surfaces is described in terms of a mapping between functions. Several effective approaches have been proposedto produce accurate and reliable functional maps, leading to need for a way to assess the quality of a given solution. Inparticular, standard quantitative evaluation methods focus mainly on the global matching error disregarding the annoyingeffects of wrong correspondences along the surface details. Therefore, in this context, it is very important to pair quantitativenumeric evaluations with a visual, qualitative assessment. Although this is usually not recognized as a problem, the latter taskis not trivial, and we argue that the commonly employed solutions suffer from important limitations. In this work, we offer a newvisual evaluation method which is based on the transfer of the object-space normals across the two spaces and then visualizethe resulting lighting. In spite of its simplicity, this method produces readable images that allow subtleties of the mapping to bediscerned, and improve direct comparability of alternative results.
description: Symposium on Geometry Processing 2019- Posters
description: Posters
description: 5
description: 6
description: S. Melzi, R. Marin, P. Musoni, U. Castellani, and M. Tarini
description: CCS Concepts: Mathematics of computing --> Functional analysis; Computing methodologies --> Shape modeling; Shape analysis
SALIX BABILONIKA (L) – МАЖНУНТОЛ ЎСИМЛИГИ БАРГИНИ ФИТОКИМЁВИЙ ЎРГАНИШ
Creators: name: Комилов, Х.М.
name: Икрамова, М.Ш.
name: Мухитдинова, М.К.
name: Атаниязова, Л.М.
Publisher: name: Zenodo
Year: 2024

description: Ўзбекистонда кенг миқёсида манзарали дарахт сифатида ўстирилаётган мажнунтол Ўзбекистонда фитокимёвий ва айниқса фармакологик томондан ўрганилмаган. Хорижий мамлакатларда эса чуқур текширилмаган. Аммо ҳалқ табобатида мажнунтол баргидан тайёрланган дамлама эса қондаги қанд миқдорини пасайтириш мақсадида қўлланилган. Шуларни эътиборга олиб, экстракция қилиб, унинг биологик фаол моддаларини ажратиб олиш, хамда шу ажратилган моддаларни кимёвий тахлил қилиб, кимёвий тузилишларини аниқлаш, хамда шу ўсимликдан олинган экстрактларни биофаоллигини аниқлаш натижалари мақолада баен қилинган.
Real-Time Hybrid Hair Rendering
Creators: name: Jansson, Erik Sven Vasconcelos
name: Chajdas, Matthäus G.
name: Lacroix, Jason
name: Ragnemalm, Ingemar
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Computing Methodologies
Rasterization
Visibility
Volumetric Models
Antialiasing
Reflectance Modeling
Texturing

description: Rendering hair is a challenging problem for real-time applications. Besides complex shading, the sheer amount of it poses a lot of problems, as a human scalp can have over 100,000 strands of hair, with animal fur often surpassing a million. For rendering, both strand-based and volume-based techniques have been used, but usually in isolation. In this work, we present a complete hair rendering solution based on a hybrid approach. The solution requires no pre-processing, making it a drop-in replacement, that combines the best of strand-based and volume-based rendering. Our approach uses this volume not only as a level-of-detail representation that is raymarched directly, but also to simulate global effects, like shadows and ambient occlusion in real-time.
description: Eurographics Symposium on Rendering - DL-only and Industry Track
description: High Performance Rendering
description: 1
description: 8
description: Erik Sven Vasconcelos Jansson, Matthäus G. Chajdas, Jason Lacroix, and Ingemar Ragnemalm
description: CCS Concepts: Computing Methodologies --> Rasterization; Visibility; Volumetric Models; Antialiasing; Reflectance Modeling; Texturing
Spectral Primary Decomposition for Rendering with sRGB Reflectance
Creators: name: Mallett, Ian
name: Yuksel, Cem
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Computing methodologies
Reflectance modeling

description: Spectral renderers, as-compared to RGB renderers, are able to simulate light transport that is closer to reality, capturing light behavior that is impossible to simulate with any three-primary decomposition. However, spectral rendering requires spectral scene data (e.g. textures and material properties), which is not widely available, severely limiting the practicality of spectral rendering. Unfortunately, producing a physically valid reflectance spectrum from a given sRGB triple has been a challenging problem, and indeed until very recently constructing a spectrum without colorimetric round-trip error was thought to be impossible. In this paper, we introduce a new procedure for efficiently generating a reflectance spectrum from any given sRGB input data. We show for the first time that it is possible to create any sRGB reflectance spectrum as a linear combination of three separate spectra, each directly corresponding to one of the BT.709 primaries. Our approach produces consistent results, such that the input sRGB value is perfectly reproduced by the corresponding reflectance spectrum under D65 illumination, bounded only by Monte Carlo and numerical error. We provide a complete implementation, including a precomputed spectral basis, and discuss important optimizations and generalization to other RGB spaces.
description: Eurographics Symposium on Rendering - DL-only and Industry Track
description: Spectral Effects
description: 9
description: 15
description: Ian Mallett and Cem Yuksel
description: CCS Concepts: Computing methodologies --> Reflectance modeling
nnDetection: A Self-configuring Method for Medical Object Detection
Creators: name: Baumgartner, Michael
name: Jaeger, Paul F.
name: Isensee, Fabian
name: Maier-Hein, Klaus H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Simultaneous localisation and categorization of objects in medical images, also referred to as medical object detection, is of high clinical relevance because diagnostic decisions often depend on rating of objects rather than e.g. pixels. For this task, the cumbersome and iterative process of method configuration constitutes a major research bottleneck. Recently, nnU-Net has tackled this challenge for the task of image segmentation with great success. Following nnU-Net's agenda, in this work we systematize and automate the configuration process for medical object detection. The resulting self-configuring method, nnDetection, adapts itself without any manual intervention to arbitrary medical detection problems while achieving results en par with or superior to the state-of-the-art. We demonstrate the effectiveness of nnDetection on two public benchmarks, ADAM and LUNA16, and propose 11 further medical object detection tasks on public data sets for comprehensive method evaluation. Code is at https://github.com/MIC-DKFZ/nnDetection .
description: MICCAI 2021 (splitted LN data set for camera-ready version); *Michael Baumgartner and Paul F. J\"ager contributed equally
Women and development: aspects of the Chinese case under communism
Creators: name: Mo, Minru
Publisher: name: University of British Columbia
Year: 2009

description: The primary concern of this thesis is the association between development and gender relations. At three levels: international, national and regional, various concepts of development are studied, and their different impacts on women are examined. In the first part of the thesis, an attempt is made to compare the different experience of women in capitalist countries and in socialist countries. In the second part, the People's Republic of China is chosen as a case study at the national level. The focus of this part is on how the different development frameworks affected the lives of rural women in the PRC's forty-five year history under the Communist Party. In the last part of the thesis, the author concentrates on studying women's lives at the regional level in the Pearl River delta, which is located in Southern Guangdong Province. The major interest here is how women's lives in Pearl River Delta have been changed since 1978, when Deng Xiaoping initialized a new development program in rural China. In the conclusion, it is suggested that a gender-sensitive approach should be emphasized in international, national and regional development planning. The major sources for the second and the third parts of the thesis are from the Chinese periodicals, including Chinese official publications, such as Zhongguo Funu [Women of China], Renmen Ribao [People's Daily] and Nanfang Ribao [South China Daily]. Some community studies conducted by English-language scholars are also utilised in these two parts. It is also part of the intention of the thesis, which is through these various research sources to present the different points of views on women in rural China.