cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sonnenfleckenzeichnung Nr. 85.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.04.1985, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Discrete Goldstone Bosons
Creators: name: Vileta, Victor Enguita
name: Gavela, Belen
name: Houtz, Rachel
name: Quilez, Pablo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Exact discrete symmetries, if non-linearly realized, can reduce the ultraviolet sensitivity of a given theory. The scalars stemming from spontaneous symmetry breaking are massive without breaking the discrete symmetry, and those masses are protected from divergent quadratic corrections. This is in contrast to non-linearly realized continuous symmetries, for which the masses of pseudo-Goldstone bosons require an explicit breaking mechanism. The symmetry-protected masses and potentials of those discrete Goldstone bosons offer promising physics avenues, both theoretically and in view of the blooming experimental search for ALPs. We develop this theoretical setup using invariant theory and focusing on the maximally natural minima of the potential. For these, we show that typically a subgroup of the ultraviolet discrete symmetry remains explicit in the spectrum, i.e. realized "à la Wigner"; this subgroup can be either abelian or non-abelian. This suggests tell-tale experimental signals for those minima: at least two (three) degenerate scalars produced simultaneously if abelian (non-abelian), while the specific ratios of multi-scalar amplitudes provide a hint of the full ultraviolet discrete symmetry. Examples of exact ultraviolet $A_4$ and $A_5$ symmetries are explored in substantial detail.
description: 44 pages, 13 figures
Bounds and algorithms for graph trusses
Creators: name: Burkhardt, Paul
name: Faber, Vance
name: Harris, David G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The $k$-truss, introduced by Cohen (2005), is a graph where every edge is incident to at least $k$ triangles. This is a relaxation of the clique. It has proved to be a useful tool in identifying cohesive subnetworks in a variety of real-world graphs. Despite its simplicity and its utility, the combinatorial and algorithmic aspects of trusses have not been thoroughly explored. We provide nearly-tight bounds on the edge counts of $k$-trusses. We also give two improved algorithms for finding trusses in large-scale graphs. First, we present a simplified and faster algorithm, based on approach discussed in Wang & Cheng (2012). Second, we present a theoretical algorithm based on fast matrix multiplication; this converts a triangle-generation algorithm of Bjorklund et al. (2014) into a dynamic data structure.
Genetic risk, parental history, and suicide attempts in a diverse sample of US adolescents.
Creators: name: Barzilay, Ran
name: Visoki, Elina
name: Schultz, Laura M
name: Warrier, Varun
name: Daskalakis, Nikolaos P
name: Almasy, Laura
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Adolescents
subject: Family History
subject: Suicide Attempt
subject: Child Adolescent Psychiatry
subject: Polygenic Risk Prediction

description: BackgroundAdolescent suicide is a major health problem in the US marked by a recent increase in risk of suicidal behavior among Black/African American youth. While genetic factors partly account for familial transmission of suicidal behavior, it is not clear whether polygenic risk scores of suicide attempt can contribute to suicide risk classification.ObjectivesTo evaluate the contribution of a polygenic risk score for suicide attempt (PRS-SA) in explaining variance in suicide attempt by early adolescence.MethodsWe studied N = 5,214 non-related youth of African and European genetic ancestry from the Adolescent Brain Cognitive Development (ABCD) Study (ages 8.9-13.8 years) who were evaluated between 2016 and 2021. Regression models tested associations between PRS-SA and parental history of suicide attempt/death with youth-reported suicide attempt. Covariates included age and sex.ResultsOver three waves of assessments, 182 youth (3.5%) reported a past suicide attempt, with Black youth reporting significantly more suicide attempts than their White counterparts (6.1 vs. 2.8%, p < 0.001). PRS-SA was associated with suicide attempt [odds ratio (OR) = 1.3, 95% confidence interval (CI) 1.1-1.5, p = 0.001]. Parental history of suicide attempt/death was also associated with youth suicide attempt (OR = 3.1, 95% CI, 2.0-4.7, p < 0.001). PRS-SA remained significantly associated with suicide attempt even when accounting for parental history (OR = 1.29, 95% CI = 1.1-1.5, p = 0.002). In European ancestry youth (n = 4,128), inclusion of PRS-SA in models containing parental history explained more variance in suicide attempt compared to models that included only parental history (ΔR 2 = 0.7%, p = 0.009).ConclusionsFindings suggest that PRS-SA may be useful for youth suicide risk classification in addition to established risk factors.
CAMEO: Curiosity Augmented Metropolis for Exploratory Optimal Policies
Creators: name: C, Simo Alami.
name: Llorente, Fernando
name: Kaddah, Rim
name: Martino, Luca
name: Read, Jesse
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Reinforcement Learning has drawn huge interest as a tool for solving optimal control problems. Solving a given problem (task or environment) involves converging towards an optimal policy. However, there might exist multiple optimal policies that can dramatically differ in their behaviour; for example, some may be faster than the others but at the expense of greater risk. We consider and study a distribution of optimal policies. We design a curiosity-augmented Metropolis algorithm (CAMEO), such that we can sample optimal policies, and such that these policies effectively adopt diverse behaviours, since this implies greater coverage of the different possible optimal policies. In experimental simulations we show that CAMEO indeed obtains policies that all solve classic control problems, and even in the challenging case of environments that provide sparse rewards. We further show that the different policies we sample present different risk profiles, corresponding to interesting practical applications in interpretability, and represents a first step towards learning the distribution of optimal policies itself.
description: 2022 30th European Signal Processing Conference (EUSIPCO), Belgrade, Serbia, 2022, pp. 1482-1486
Sonnenfleckenzeichnung Nr. 192.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.08.1985, 07:15, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 152.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.07.1985, 09:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Systematic study of Mn atoms, artificial dimers and chains on superconducting Ta(110)
Creators: name: Beck, Philip
name: Schneider, Lucas
name: Wiesendanger, Roland
name: Wiebe, Jens
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Magnetic adatoms coupled to an $s$-wave superconductor give rise to local bound states, so-called Yu-Shiba-Rusinov states. Focusing on the ultimate goal of tailoring chains of such adatoms into a topologically superconducting phase, we investigate basic building blocks - single Fe and Mn adatoms and Mn dimers on clean superconducting Ta(110) - using scanning tunneling microscopy and spectroscopy. We perform a systematic study of the hybridizations and splittings in dimers, and their dependence on the crystallographic directions and interatomic spacings, in order to identify potentially interesting chain geometries for this novel sample type. Subsequently, we study the spin structure as well as the length dependent Shiba band structure in Mn chains of those geometries using spin-resolved scanning tunneling spectroscopy. All results are compared to the according properties of structurally identical dimers and chains on the previously studied Nb(110), which has almost identical surface structure and electronic properties, but an about three times smaller spin-orbit interaction.
description: 14 pages, 10 figures
Classification of $p$-groups via their $2$-nilpotent multipliers
Creators: name: Niroomand, P.
name: Parvizi, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20C25, 20D15

description: For a $p$-group of order $p^n$, it is known that the order of $2$-nilpotent multiplier is equal to $|\mathcal{M}^{(2)}(G)|=p^{\f12n(n-1)(n-2)+3-s_2(G)}$ for an integer $s_2(G)$. In this article, we characterize all of non abelian $p$-groups satisfying in $s_2(G)\in\{1,2,3\}.
Supermoduli and PCOs at Genus Two
Creators: name: Wang, Charles
name: Yin, Xi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We illustrate the relation between supermoduli integration and picture changing operators (PCOs) particularly concerning the role of vertical integration, in the context of superstring vacuum amplitudes, by an explicit comparison of different parameterizations of the supermoduli space of genus two super Riemann surfaces.
description: 26 pages, 3 figures
Sonnenfleckenzeichnung Nr. 142.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.07.1985, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Exponentially Faster Massively Parallel Maximal Matching
Creators: name: Behnezhad, Soheil
name: Hajiaghayi, MohammadTaghi
name: Harris, David G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The study of approximate matching in the Massively Parallel Computations (MPC) model has recently seen a burst of breakthroughs. Despite this progress, however, we still have a far more limited understanding of maximal matching which is one of the central problems of parallel and distributed computing. All known MPC algorithms for maximal matching either take polylogarithmic time which is considered inefficient, or require a strictly super-linear space of $n^{1+Ω(1)}$ per machine. In this work, we close this gap by providing a novel analysis of an extremely simple algorithm a variant of which was conjectured to work by Czumaj et al. [STOC'18]. The algorithm edge-samples the graph, randomly partitions the vertices, and finds a random greedy maximal matching within each partition. We show that this algorithm drastically reduces the vertex degrees. This, among some other results, leads to an $O(\log \log Δ)$ round algorithm for maximal matching with $O(n)$ space (or even mildly sublinear in $n$ using standard techniques). As an immediate corollary, we get a $2$ approximate minimum vertex cover in essentially the same rounds and space. This is the best possible approximation factor under standard assumptions, culminating a long line of research. It also leads to an improved $O(\log\log Δ)$ round algorithm for $1 + \varepsilon$ approximate matching. All these results can also be implemented in the congested clique model within the same number of rounds.
description: A preliminary version of this paper appeared in the proceedings of The 60th Annual IEEE Symposium on Foundations of Computer Science (FOCS 2019)
Gravitational lens modeling with basis sets
Creators: name: Birrer, Simon
name: Amara, Adam
name: Refregier, Alexandre
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a strong lensing modeling technique based on versatile basis sets for the lens and source planes. Our method uses high performance Monte Carlo algorithms, allows for an adaptive build up of complexity and bridges the gap between parametric and pixel based reconstruction methods. We apply our method to a HST image of the strong lens system RXJ1131-1231 and show that our method finds a reliable solution and is able to detect substructure in the lens and source planes simultaneously. Using mock data we show that our method is sensitive to sub-clumps with masses four orders of magnitude smaller than the main lens, which corresponds to about $10^8 M_{\odot}$, without prior knowledge on the position and mass of the sub-clump. The modelling approach is flexible and maximises automation to facilitate the analysis of the large number of strong lensing systems expected in upcoming wide field surveys. The resulting search for dark sub-clumps in these systems, without mass-to-light priors, offers promise for probing physics beyond the standard model in the dark matter sector.
description: 14 pages, 10 figures, accepted for publication in APJ
Sonnenfleckenzeichnung Nr. 131.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.06.1985, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
title: Biological activity of curcumin-loaded cyclodextrin-decorated superparamagnetic iron oxide nanoparticles
Creators: name: Mihály, Ákos Lajos
Publisher: name: TU Wien
Year: 2022
Subjects: subject: curcumin
subject: cyclodextrin
subject: SPIONS
subject: drug delivery

description: Curcumin, a curcuminoid from Curcuma longa, possesses enormous potential as a therapeutic agent in numerous applications, including antibacterial and anticancer therapy. However, its low water solubility and poor bioavailability severely hamper its use as a therapeutic agent. To overcome such limitations, drug delivery systems (DDS) are being investigated in order to improve their pharmacokinetic profile. In this context, nanoparticles have been actively studied as promising DDS as they possess a number of desirable characteristics to improve drug delivery, including a large surface area-to-volume ratio, that enables better drug uptake and controlled drug releasekinetics.Cyclodextrins are a family of naturally occurring cyclic oligosaccharides derived fromthe enzymatic conversion of starch. They have been employed in the pharmaceutical industryin recent years. Cyclodextrins are water-soluble and possess an interior hydrophobic cavity thatcan form inclusion complexes with a variety of different guest molecules, including curcumin.However, the administration of cyclodextrin in its monomeric form suffers from severaldrawbacks due to its faster clearance. Nanoparticle packaging of cyclodextrin might helpovercome some of its limitations and improve bioavailability. Such nanoparticles could also beused for multi-functional therapeutics by delivering different types of hydrophobic cargo andremoving unwanted hydrophobic constituents, such as cholesterol, a useful therapy inneurodegenerative disease treatment.In this work, we introduce different delivery options for curcumin using bcyclodextrins and cyclodextrin-appended superparamagnetic iron oxide nanoparticles. We alsoaim to identify the ability of b-cyclodextrin to sequester cholesterol and reduce bacterialgrowth. We report the cholesterol-mopping activity of cyclodextrin-decoratedsuperparamagnetic iron oxide nanoparticles in cholesterol-impaired CHO cell lines. Moreover,apoptotic properties on HepG2 cells are assessed for free curcumin and curcumin-loaded oneither cyclodextrin or cyclodextrin-functionalized superparamagnetic iron oxide nanoparticles.Finally, we investigate free curcumin, free cyclodextrin, and curcumin-loaded cyclodextrinsfor their antibacterial effect on Staphylococcus aureus.
Sonnenfleckenzeichnung Nr. 27.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.02.1985, 09:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Populating the Digital Space for Cultural Heritage with Heritage Digital Twins
Creators: name: Niccolucci, Franco
name: Felicetti, Achille
name: Hermon, Sorin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: E.2; H.3.2; H.3.7; I.3.7

description: The present paper concerns the design of the semantic infrastructure of the digital space for cultural heritage as envisaged by the European Commission in its recent documents. Due to the complexity of the cultural heritage data and of their intrinsic interrelationships, it is necessary to introduce a novel ontology, yet compliant with existing standards and interoperable with previous platforms used in this context, such as Europeana. The digital space organization must be tailored to the methods and the theory of cultural heritage, briefly summarized in the introduction. The new ontology is based on the Digital Twin concept, i.e. the digital counterpart of cultural heritage assets incorporating all the digital information pertaining to them. This creates a Knowledge Base on the cultural heritage digital space. The paper outlines the main features of the proposed Heritage Digital Twin ontology and provides some examples of application. Future work will include completing the ontology in all its details and testing it in other real cases and with the various sectors of the cultural heritage community.
description: Submitted to Data - An Open Access Journal from MDPI. 29 pages, 9 figures
A New Approach of Learning Hierarchy Construction Based on Fuzzy Logic
Creators: name: Aajli, Ali
name: Afdel, Karim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In recent years, adaptive learning systems rely increasingly on learning hierarchy to customize the educational logic developed in their courses. Most approaches do not consider that the relationships of prerequisites between the skills are fuzzy relationships. In this article, we describe a new approach of a practical application of fuzzy logic techniques to the construction of learning hierarchies. For this, we use a learning hierarchy predefined by one or more experts of a specific field. However, the relationships of prerequisites between the skills in the learning hierarchy are not definitive and they are fuzzy relationships. Indeed, we measure relevance degree of all relationships existing in this learning hierarchy and we try to answer to the following question: Is the relationships of prerequisites predefined in initial learning hierarchy are correctly established or not?
description: 58-66
Characterization of finite dimensional nilpotent Lie algebras by the dimension of their Schur multipliers, $s(L)=5$
Creators: name: Shamsaki, Afsaneh
name: Niroomand, Peyman
Publisher: name: arXiv
Year: 2019
Subjects: subject: Commutative Algebra (math.AC)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17B30

description: It is known that the dimension of the Schur multiplier of a non-abelian nilpotent Lie algebra $L$ of dimension $n$ is equal to $\frac{1}{2}(n-1)(n-2)+1-s(L)$ for some $ s(L)\geq0 $. The structure of all nilpotent Lie algebras has been given for $ s(L) \leq 4 $ in several papers. Here, we are going to give the structure of all non-abelian nilpotent Lie algebras for $s(L)=5$.
description: To appear in Math. Report
Sonnenfleckenzeichnung Nr. 29.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.02.1985, 11:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A new variational discretization technique for initial value problems bypassing governing equations
Creators: name: Rothkopf, Alexander
name: Nordström, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: High Energy Physics - Lattice (hep-lat)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Motivated by the fact that both the classical and quantum description of nature rest on causality and a variational principle, we develop a novel and highly versatile discretization prescription for classical initial value problems (IVPs). It is based on an optimization (action) functional with doubled degrees of freedom, which is discretized using a single regularized summation-by-parts (SBP) operator. Formulated as optimization task it allows us to obtain classical trajectories without the need to derive an equation of motion. The novel regularization we develop in this context is inspired by the weak imposition of initial data, often deployed in the modern treatment of IVPs and is implemented using affine coordinates. We demonstrate numerically the stability, accuracy and convergence properties of our approach in systems with classical equations of motion featuring both first and second order derivatives in time. onvergence properties of our approach in systems with classical equations of motion featuring both first and second order derivatives in time.
description: 28 pages, 15 figures, accepted in Journal of Computational Physics
Sonnenfleckenzeichnung Nr. 90.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.04.1985, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 84.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.04.1985, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 49.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.03.1985, 08:15, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
The complexity of the first-order theory of pure equality
Creators: name: Latkin, Ivan V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic (math.LO)
subject: Computational Complexity (cs.CC)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: F.1.1; F.2.3; F.4.2
subject: 03C40, 03C07, 03D15, 68Q05, 68Q15, 68Q17

description: We will find a lower bound on the recognition complexity of the theories that are nontrivial relative to some equivalence relation (this relation may be equality), namely, each of these theories is consistent with the formula, whose sense is that there exist two non-equivalent elements. However, at first, we will obtain a lower bound on the computational complexity for the first-order theory of Boolean algebra that has only two elements. For this purpose, we will code the long-continued deterministic Turing machine computations by the relatively short-length quantified Boolean formulae; the modified Stockmeyer and Meyer method will appreciably be used for this simulation. Then, we will transform the modeling formulae of the theory of this Boolean algebra to the simulation ones of the first-order theory of the only equivalence relation in polynomial time. Since the computational complexity of these theories is not polynomial, we obtain that the class $\mathbf{P}$ is a proper subclass of $\mathbf{PSPACE}$ (Polynomial Time is a proper subset of Polynomial Space). Keywords: Computational complexity, the theory of equality, the coding of computations, simulation by means formulae, polynomial time, polynomial space, lower complexity bound
description: 40 pages, 19 references bibliography. https://mathscinet.ams.org/mathscinet-getitem?mr=4407204
Sonnenfleckenzeichnung Nr. 135.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.06.1985, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 200.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.09.1985, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Phonon and optical-roton branches of excitations of the Bose system
Creators: name: Poluektov, Yu. M.
name: Soroka, A. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a system of a large number of Bose particles, a chain of coupled equations for the averages of field operators is obtained. In the approximation where only the averages of one field operator and the averages of products of two operators at zero temperature are taken into account, there is derived a closed system of dynamic equations. Taking into account the finite range of the interaction potential between particles, the spectrum of elementary excitations of a many-particle Bose system is calculated, and it is shown that it has two branches: a sound branch and an optical branch with an energy gap at zero momentum. At high density, both branches are nonmonotonic and have the roton-like minima. The dispersion of the phonon part of the spectrum is considered. The performed calculations and analysis of experiments on neutron scattering allow to make a statement about the complex structure of the Landau dispersion curve in the superfluid He-4.
description: 18 pages, 6 figures
Quantum coherence in the dynamical excitation, ionization, and decaying of neon gas induced by X-ray laser
Creators: name: Li, Yongqiang
name: Gao, Cheng
name: Dong, Wenpu
name: Zeng, Jiaolong
name: Yuan, Jianmin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We develop a large scale quantum master equation approach to describe dynamical processes of practical open quantum systems driven by both coherent and stochastic interactions by including more than one thousand true states of the systems, motivated by the development of highly bright and fully coherent lasers in the X-ray wavelength regime. The method combines the processes of coherent dynamics induced by the X-ray laser and incoherent relaxations due to spontaneous emissions, Auger decays, and electronic collisions. As examples, theoretical investigation of {\it real} coherent dynamics of inner-shell electrons of a neon gas, irradiated by a high-intensity X-ray laser with a full temporal coherence, is carried out with the approach. In contrast to the rate equation treatment, we find that coherence can suppress the multiphoton absorptions of a neon gas in the ultra-intense X-ray pulse, due to coherence-induced Rabi oscillations and power broadening effects. We study the influence of coherence on ionization processes of neon, and directly prove that sequential single-photon processes for both outer- and inner-shell electrons dominate the ionizations for the recently typical experiments with a laser intensity of $\approx10^{18}$ ${\rm W/cm^2}$. We discuss possible experimental implementations such as signatures for coherent evolution of inner-shell electrons via resonance fluorescence processes. The approach can also be applied to many different practical open quantum systems in atomic, quantum optical, and cold matter systems, which are treated qualitatively by a few-level master equation model before.
description: 14 pages, 8 figures
Representations of Solvable Subgroups of PSL(3,C)
Creators: name: Toledo-Acosta, Mauricio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 37F99, 30F40, 20H10

description: In this paper, we give a complete description of the representations of all upper triangular complex Kleinian subgroups of PSL(3,C). In https://doi.org/10.1007/s00574-021-00254-9 we show that any solvable group is virtually triangularizable and can be constructed as the semidirect product of two layers of parabolic elements and two layers of loxodromic elements. There are five families of purely parabolic discrete groups of PSL(3,C) https://doi.org/10.1016/j.laa.2022.08.027, therefore, the parabolic part of any upper triangular group belongs to one of these five families. In this paper we study which loxodromic elements can be combined with the elements of the parabolic part of an upper triangular discrete subgroup of PSL(3,C) in each of these five cases. These parabolic elements impose strong restrictions on the type, and number, of loxodromic elements that can be present in the group. We show that up to conjugation, there are 16 types of upper triangular complex Kleinian groups in PSL(3,C) containing loxodromic elements. These results are a further step towards the completion of the study of elementary discrete subgroups of PSL(3,C).
description: 24 pages. This paper is the sequel of https://doi.org/10.1007/s00574-021-00254-9
Strictly finite range forces from the signum-Gordon field: exact results in two spatial dimensions
Creators: name: Arodź, H.
name: Karkowski, J.
name: Świerczyński, Z.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Exact formula for the force between two identical static point charges coupled to the nonlinear scalar field of two-dimensional signum-Gordon model is obtained. Pertinent solution of the field equation is found in the form of one-dimensional integral. The force exactly vanishes when the distance between the charges exceeds certain critical value.
description: published version
Web Content Management mit TYPO3
Creators: name: Wiljes, Cord
Publisher: name: Kolloquium Wissensinfrastruktur
Year: 2017

description: Das Enterprise Web Content Management System TYPO3 ermöglicht die effiziente Erstellung und Pflege komplexer Websites. Der Vortrag bietet einen Überblick über die Funktionalität und Einsatzmöglichkeiten von TYPO3. Die praktische Arbeit mit TYPO3 wird am Beispiel einer Arbeitsgruppen-Website demonstriert.
description: Kolloquium Wissensinfrastruktur, Sommersemester 2017
Sonnenfleckenzeichnung Nr. 36.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.02.1985, 10:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
On Some Families of Integrals Connected to the Hurwitz Zeta Function
Creators: name: Patkowski, Alexander E
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Expressions for a family of integrals involving the Hurwitz zeta function are established using standard properties of the Fourier transform.
Sonnenfleckenzeichnung Nr. 35.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.02.1985, 10:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Optimal parameter for the SOR-like iteration method for solving the system of absolute value equations
Creators: name: Chen, Cairong
name: Yu, Dongmei
name: Han, Deren
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: The SOR-like iteration method for solving the absolute value equations~(AVE) of finding a vector $x$ such that $Ax - |x| - b = 0$ with $ν= \|A^{-1}\|_2 < 1$ is investigated. The convergence conditions of the SOR-like iteration method proposed by Ke and Ma ([{\em Appl. Math. Comput.}, 311:195--202, 2017]) are revisited and a new proof is given, which exhibits some insights in determining the convergent region and the optimal iteration parameter. Along this line, the optimal parameter which minimizes $\|T_ν(ω)\|_2$ with $$T_ν(ω) = \left(\begin{array}{cc} |1-ω| & ω^2ν\\ |1-ω| & |1-ω| +ω^2ν\end{array}\right)$$ and the approximate optimal parameter which minimizes $η_ν(ω) =\max\{|1-ω|,νω^2\}$ are explored. The optimal and approximate optimal parameters are iteration-independent and the bigger value of $ν$ is, the smaller convergent region of the iteration parameter $ω$ is. Numerical results are presented to demonstrate that the SOR-like iteration method with the optimal parameter is superior to that with the approximate optimal parameter proposed by Guo, Wu and Li ([{\em Appl. Math. Lett.}, 97:107--113, 2019]). In some situation, the SOR-like itration method with the optimal parameter performs better, in terms of CPU time, than the generalized Newton method (Mangasarian, [{\em Optim. Lett.}, 3:101--108, 2009]) for solving the AVE.
description: 23 pages, 7 figures, 7 tables
Sonnenfleckenzeichnung Nr. 114.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.05.1985, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Eco-Spirituality within an Inclusive Creation: A Nature-Based Spiritual Paradigm Shift
Creators: name: Jnanadeepa Journal
name: SOROJ MULLICK
Publisher: name: figshare
Year: 2020
Subjects: subject: 220311 Philosophical Psychology (incl. Moral Psychology and Philosophy of Action)
subject: FOS: Philosophy, ethics and religion

description: The serious ecological crisis is creating concerns among thinkers and theologians, pushing them to address the issues from their own perspectives. The world today is in the grip of terrorising Covid-19 pandemic with the reality and anguish of death. Beyond the present pandemic there are more deaths on our planet for a thousand other reasons than the Coronavirus. The prospect of a probable slower but a more certain end of humanity at some distant time is not denied. The danger associated with the environmental destruction and deterioration has aroused a deep collective fear the world over. This perspective provokes no lesser impact on the collective psyche. Yet, modernity has systematically denied the constant imminence of death and destruction of the world. We can only reasonably hope for a collective awareness of the changes needed and decisive action taken by all stakeholders. It calls for a profound conversion of the ‘ways of life’. Christianity has to play a crucial role in translating into the concrete life those decisive actions. The author argues that we need to live more consciously and impact the nature that has a slap on human greed. A nature-based eco-spirituality as a progressive spiritual science of the future, will certainly make right the wrong that human race has committed with its respective affiliated religious biases and socio-scientific blunders.
Sonnenfleckenzeichnung Nr. 170.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.07.1985, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 177.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.08.1985, 07:30, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1985

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)