cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of stacking sequence on low-velocity impact behavior of metal laminates
Creators: name: Khoramishad Hadi
name: Tofighi Mohammad Bagheri
name: Khodaei Meysam
Publisher: name: Физическая мезомеханика
Year: 2018
Subjects: ADHESIVELY BONDED METAL LAMINATE
LOW-VELOCITY IMPACT
STACKING SEQUENCE
FINITE ELEMENT MODELING
DROP WEIGHT TEST METHOD
КЛЕЕНЫЙ МЕТАЛЛИЧЕСКИЙ ЛАМИНАТ
НИЗКОСКОРОСТНОЕ УДАРНОЕ ВОЗДЕЙСТВИЕ
ПОСЛЕДОВАТЕЛЬНОСТЬ УКЛАДКИ СЛОЕВ
МОДЕЛИРОВАНИЕ МЕТОДОМ КОНЕЧНЫХ ЭЛЕМЕНТОВ
ИСПЫТАНИЕ ПАДАЮЩИМ ГРУЗОМ

description: В статье экспериментально и численно исследовано поведение металлических ламинатов при низкоскоростном ударном воздействии. Ламинаты состояли из различного количества слоев металла с разной последовательностью укладки слоев. В качестве главных параметров отклика материала на низкоскоростное воздействие рассматривали контактное усилие, продолжительность контакта, количество рассеиваемой энергии и поперечное смещение. Обнаружено, что с точки зрения последовательности укладки отклик металлических ламинатов на низкоскоростное воздействие в основном зависит от объемной доли слоев металла, характеристик материала первого и последнего слоев, а также от количества слоев. Увеличение количества слоев металла при постоянной толщине металлических ламинатов приводит к уменьшению контактного усилия и увеличению длительности контакта и поперечного смещения. При увеличении объемной доли определенного металла в ламинате ударные свойства данного металла в значительной степени передаются всему композиту. Результаты исследования могут быть полезны при проектировании металлических конструкций с заданным поведением в условиях низкоскоростного ударного воздействия.In this paper, the low-velocity impact behavior of metal laminates was studied experimentally and numerically. Metal laminates with different number of metal layers and different stacking sequences were investigated by examining the contact force, the contact duration, the dissipated energy and the transverse displacement as the main low-velocity impact responses. It was found that from stacking sequence perspective, the low-velocity impact responses of metal laminates were mainly affected by the volume fraction of metal layers, the material characteristics of the first and last metal layers and the number of metal layers. Increasing the number of metal layers in a constant thickness of metal laminates decreased the contact force and increased the contact duration and transverse displacement. The use of higher volume fraction of a metal material in a metal laminate caused the metal laminate to inherit more of the impact characteristics of that material. The results of this research can assist engineers to design metallic structures with desired low-velocity impact behaviors.
Well-known species, unexpected results: High genetic diversity in declining Vipera ursinii in Central, Eastern and Southeastern Europe
Creators: name: Vörös, Judit
name: Ursenbacher, Sylvain
name: Jelić, Dušan
name: Tomović, Ljiljana
name: Crnobrnja-Isailović, Jelka
name: Ajtić, Rastko
name: Sterijovski, Bogoljub
name: Zinenko, Oleksandr
name: Ghira, Ioan
name: Strugariu, Alexandru
name: Zamfirescu, Stefan
name: Nagy, Zoltán Tamás
name: Péchy, Tamás
name: Krízsik, Virág
name: Márton, Orsolya
name: Halpern, Bálint
Publisher: name: Brill Online
Year: 2022
Subjects: Ecology not elsewhere classified

description: The Meadow and Steppe viper, Vipera ursinii-renardi complex is a well-studied group that is divided into several morphological subspecies. In this study, we combine the analyses of two mitochondrial genes with 9 microsatellite markers to compare both phylogenetic signals. Whereas the signal is similar between both genomes within most subspecies, the relative relationships between subspecies are more differentiated. Moreover, the nuclear phylogenetic reconstruction supports genetic homogeneity within V. u. macrops (in contrast to mtDNA). Both genetic portions show an unexpected differentiation between a population from Bistra Mountain and other V. u. macrops populations. Globally, the microsatellite markers suggest high genetic diversity in most subspecies, even in V. u. rakosisensis which is highly threatened; only V. u. macrops showed a limited genetic diversity. Within lowland subspecies, the differentiation between populations is globally limited compared to the distance between them (except in some populations of V. u. moldavica). The limited differentiation might be the consequence of a recent isolation (few decades) of previously large populations. Nevertheless, the only way to maintain this genetic diversity and to avoid an increase in genetic differentiation between populations in the future is to recreate suitable habitats and reconnect the populations.
Alpha decay of thermally excited nuclei
Creators: name: Velasquez, J. E. Perez
name: Caballero, O. L.
name: Kelkar, N. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: One of the prominent decay modes of heavy nuclei which are produced in astrophysical environments at temperatures of the order of $10^9$ K is the $α$ ($^4$He) decay. Thermally enhanced $α$ decay rates are evaluated within the standard scheme of a tunneling decay where the $α$ particle tunnels through the potential barrier formed by its interaction with the daughter nucleus. Following the observation that there exist several excited levels with the possibility of an $α$ decay when the daughter nucleus is at a shell closure, we focus in particular on decays producing daughter nuclei with the neutron number, N = 126. Within a statistical approach we find that the half-lives, $t_{1/2}(T)$, for temperatures ranging from $T$ = 0 to 2.4 GK can decrease by 1 - 2 orders of magnitude with the exception of the decay of $^{212}$Po which decays to the doubly magic daughter $^{208}$Pb, where $t_{1/2}(T)$ decreases by 5 orders of magnitude. The effect of these thermally enhanced $α$ decays on the $r$-process nucleosynthesis can be significant in view of the mass build up at the waiting point nuclei with closed neutron shells.
description: 18 pages, 1 figure
Entry Vehicle Trajectory Optimization using Convex Programming and Post-correction technique
Creators: name:  CHEOL-GOO JUNG
name:   CHANG-HUN LEE
name:   TAE-HUN KIM
name:   HYUNG-SIK CHOI
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: ENTRY GUIDANCE
CONVEX PROGRAMMING

description: This paper considers the trajectory optimization of entry vehicles using convex programming. Optimal entry trajectory satisfying path constraints on heating rate, dynamic pressure, and load factor is obtained with sequential second-order cone programming (SOCP). The nonlinear dynamics and path constraints are simplified by changing the independent variable into energy. To mitigate infeasibility and solution divergence problems, the post-correction technique is utilized as well as slack variables and trust-region. The step length of obtained solution at each iteration is modified based on the amount of linearization error. The robustness and effectiveness of the proposed method is demonstrated through numerical simulation.
State Grammars with Stores
Creators: name: Ibarra, Oscar H.
name: McQuillan, Ian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: F.4.2

description: State grammars are context-free grammars where the productions have states associated with them, and a production can only be applied to a nonterminal if the current state matches the state in the production. Once states are added to grammars, it is natural to add various stores, similar to machine models. With such extensions, productions can only be applied if both the state and the value read from each store matches between the current sentential form and the production. Here, generative capacity results are presented for different derivation modes, with and without additional stores. In particular, with the standard derivation relation, it is shown that adding reversal-bounded counters does not increase the capacity, and states are enough. Also, state grammars with reversal-bounded counters that operate using leftmost derivations are shown to coincide with languages accepted by one-way machines with a pushdown and reversal-bounded counters, and these are surprisingly shown to be strictly weaker than state grammars with the standard derivation relation (and no counters). The complexity of the emptiness problem involving state grammars with reversal-bounded counters is also studied.
description: 21 pages
Child and Adolescent Refugees: Developmental Differences
Creators: name: Posner, Amanda
Publisher: name: Unknown
Year: 2005

description: As they acculturate, refugee children face a distinct set of obstacles that are mediated by certain risk and protective factors. Their experiences differ, however, based on their developmental stage at the time of arrival in the host country. This article discusses the different effects of the refugee experience on the development of children and adolescents. It suggests that change is needed in current intervention programs and services. Such change should recognize and accommodate these differences in order to deliver more effective services.
On a Generalized Entropy Measure Leading to the Pathway Model: with a preliminary application to solar neutrino data
Creators: name: Mathai, A. M.
name: Haubold, H. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: An entropy for the scalar variable case, parallel to Havrda-Charvat entropy was introduced by the first author and the properties and its connection to Tsallis non-extensive statistical mechanics and the Mathai pathway model were examined by the authors in previous papers. In the current paper we extend the entropy to cover scalar case, multivariable case, and matrix variate case. Then this measure is optimized under different types of restrictions and a number of models in the multivariable case and matrix variable case are obtained. Connections of these models to problems in statistical, physical, and engineering sciences are also pointed out. An application of the simplest case of the pathway model to the interpretation of solar neutrino data is provided.
description: 19 pages, 4 figures, LaTeX. arXiv admin note: text overlap with arXiv:cond-mat/0207536 by other authors
What heritage day?
Creators: name: Siebörger, Rob
Publisher: name: R. Siebörger, What heritage day?, «Public history weekly», 2, 2014, n. 39
Year: 2014

description: 24 September is annually “Heritage Day” in South Africa. A Cape Town cartoonist conveyed greetings for the day in a cartoon he entitled “When the rainbow nation becomes the boerewors Nation.” It very effectively introduces some of the main issues that are raised by having a Heritage Day holiday in a country with multiple heritages.
description: Am 24. September ist jährlich der “Kulturerbe-Tag” in Südafrika. Ein Cartoonist aus Kapstadt gestaltete anlässlich dieses Tages eine Grußkarte unter dem Motto “Wenn die Regenbogennation zur Würstchennation wird”. Dies lenkt den Fokus deutlich auf die Debatte, die daher rührt, dass eine Nation mit vielfachem kulturellen Erbe einen “Kulturerbe-Tag” feiert.
An Analysis of User Satisfaction for Renovation Projects of Irrigation Facilities
Creators: name: Han, Jaehwan
name: Han, Jaehwan
Publisher: name: Unknown
Year: 2018
Subjects: subject: Farm Management
subject: improvement project of irrigation facilities
subject: users' satisfaction
subject: ordered probit model

description: Agricultural water plays a significant role in terms of enhancing food self-sufficiency and food security. The supply of agricultural water based on the irrigation facilities contributes to improving agricultural productivity. The objective of this study is to explore both farmers’ and non-farmers’ perceptions and satisfactions about a government policy of improving irrigation facilities. Also, the paper investigates factors affecting their satisfaction about the government maintenance and management project of irrigation facilities. The results demonstrate that farmers, who insist the necessity of renovation of a reservoir located where they live in, are apt to be relatively dissatisfied with the government project. The magnitudes of marginal effects indicate that farmers’ satisfaction living in an agricultural area is higher than that of non-farmers. Finally, it is shown that farmers with higher satisfaction toward a government undertaking of improving a reservoir tend to be satisfied with a government project of repairing an irrigation and drainage canal as well.
More pieces of the puzzle: Chemistry and substructures in the Galactic thick disk
Creators: name: Helmi, Amina
name: Williams, Mary
name: Freeman, K. C.
name: Bland-Hawthorn, J.
name: De Silva, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the chemical abundances of Solar neighbourhood stars associated to dynamical structures in the Milky Way's (thick) disk. These stars were identified as overdensity in the eccentricity range 0.3< ecc < 0.5 in the Copenhagen-Geneva Survey by Helmi et al. (2006). We find that the stars with these dynamical characteristics do not constitute a homogeneous population. A relatively sharp transition in dynamical and chemical properties appears to occur at a metallicity of [Fe/H] ~ -0.4. Stars with [Fe/H] > -0.4 have mostly lower eccentricities, smaller vertical velocity dispersions, are alpha-enhanced and define a rather narrow sequence in [alpha/Fe] vs [Fe/H], clearly distinct from that of the thin disk. Stars with [Fe/H] < -0.4 have a range of eccentricities, are hotter vertically, and depict a larger spread in [alpha/Fe]. We have also found tentative evidence of substructure possibly associated to the disruption of a metal-rich star cluster. The differences between these populations of stars is also present in e.g. [Zn/Fe], [Ni/Fe] and [SmII/Fe], suggesting a real physical distinction.
description: Astrophysical Journal in press. 5 pages, 4 figures
AGN torus emission for a homogeneous sample of bright FSRQs
Creators: name: Castignani, Gianluca
name: De Zotti, Gianfranco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have selected a complete sample of 80 flat-spectrum radio quasars (FSRQs) from the WMAP 7-yr catalog within the SDSS area, all with measured redshift, and have inspected their SEDs looking for evidence of an AGN torus emission. A SED fitting algorithm has found such evidence for seven objects and an uncertain indication for one more. These 8 FSRQs belong to the sub-sample of 55 sources showing the optical--ultraviolet bump interpreted as thermal emission from a standard accretion disc. Torus luminosities have been estimated for the eight objects whose torus was identified by the fitting algorithm. For the other 47 FSRQs in the sub-sample we have derived upper limits to the torus luminosity. Our analysis shows that the torus can show up clearly only under quite special conditions: low luminosity and preferentially low peak frequency of the beamed synchrotron emission from the jet; high torus luminosity, close to that of the accretion disc. This implies that the inferred ratios of torus to disc luminosity are biased high. The median value, considering upper limits as detections, is $L_{\rm torus}/L_{\rm disc}\sim 1$ while studies of radio quiet quasars yield average ratios $\langle L_{\rm torus}/L_{\rm disc}\rangle \simeq 1/3-1/2$. Our results are compatible with the FSRQ tori having the same properties of those of radio quiet quasars. At variance with Plotkin et al. (2012), who investigated a sample of optically selected BL Lacs, we find that the Wide-field Infrared Survey Explorer (WISE) infrared colors do not allow us to draw any conclusion on the presence or absence of tori associated with WMAP selected blazars. With the latter selection blazars of all types (FSRQs with and without evidence of torus, BL Lacs, blazars of unknown type) occupy the same region of the WISE color-color plane, and their region overlaps that of SDSS quasars with point-like morphology.
description: A&A accepted, 18 pages, 7 figures
Sonnenfleckenzeichnung Nr. 157.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.07.1987, 10:00, 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: 1987

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)
Osnove računovodstva za vodenje EU projektov
Creators: name: Šubelj, Biserka
Publisher: name: Zenodo
Year: 2023

description: Predstavitev osnov računovodstva za vodenje evropskih projektov na delavnici "Knjigovodska šola", ki je potekala 9. in 10. oktobra 2023 na Kmetijskem inštitutu Slovenije.
Sonnenfleckenzeichnung Nr. 213.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.09.1987, 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: 1987

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)
Faster towards a national index for events and training courses with your feedback
Creators: name: Miedema, Margriet
name: Van Vugt, Daan
name: Barjas, Carlos Teijeiro
name: Van Gelder, Celia W.G.
Publisher: name: Zenodo
Year: 2022
Subjects: Training
Training Portal
Training Catalogue
RDM
Open Science

description: This presentation was used during an interactive workshop at the Open Science Festival in Amsterdam, September 1, 2022 (https://opensciencefestival.nl/).

 This session marks the launch of a pilot environment (Taxila) for a national training and events calendar, an Index for training and events on Open Science, RDM, Research Software, RDM Infrastructure. The Index Is by and for the community. It will be populated by all Dutch stakeholders and will boost the visibility and findability of events and training courses.
Sonnenfleckenzeichnung Nr. 9.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.01.1987, 08:45, 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: 1987

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)
On the Majorana representation of the optical Dirac equation
Creators: name: Dennis, Mark R
name: Tijssen, Teuntje
name: Morgan, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the representations of the optical Dirac equation, especially ones where the Hamiltonian is purely real-valued. This is equivalent, for Maxwell's equations, to the Majorana representation of the massless Dirac (Weyl) equation. We draw analogies between the Dirac, chiral and Majorana representations of the Dirac and optical Dirac equations, and derive two new optical Majorana representations. Just as the Dirac and chiral representations are related to optical spin and helicity states, these Majorana representations of the optical Dirac equation are associated with the linear polarisation of light. This provides a means to compare electron and electromagnetic wave equations in the context of classical field theory.
description: 17 pages. For special issue of J Phys A in honour of Michael Berry
On the Nature of the Three-part Structure of Solar Coronal Mass Ejections
Creators: name: Song, Hongqiang
name: Zhang, Jie
name: Li, Leping
name: Yang, Zihao
name: Xia, Lidong
name: Zheng, Ruisheng
name: Chen, Yao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Coronal mass ejections (CMEs) result from eruptions of magnetic flux ropes (MFRs) and can possess a three-part structure in white-light coronagraphs, including a bright front, dark cavity and bright core. In the traditional opinion, the bright front forms due to the plasma pileup along the MFR border, the cavity represents the cross section of the MFR, and the bright core corresponds to the erupted prominence. However, this explanation on the nature of the three-part structure is being challenged. In this paper, we report an intriguing event occurred on 2014 June 14 that was recorded by multiple space- and ground-based instruments seamlessly, clearly showing that the CME front originates from the plasma pileup along the magnetic arcades overlying the MFR, and the core corresponds to a hot-channel MFR. Thus the dark cavity is not an MFR, instead it is a low-density zone between the CME front and a trailing MFR. These observations are consistent with a new explanation on the CME structure. If the new explanation is correct, most (if not all) CMEs should exhibit the three-part appearance in their early eruption stage. To examine this prediction, we make a survey study of all CMEs in 2011 and find that all limb events have the three-part feature in the low corona, regardless of their appearances in the high corona. Our studies suggest that the three-part structure is the intrinsic structure of CMEs, which has fundamental importance for understanding CMEs.
description: 10 pages, 4 figures, accepted by ApJ
Sonnenfleckenzeichnung Nr. 138.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.06.1987, 07:45, 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: 1987

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. 289.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.12.1987, 10:00, 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: 1987

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): 1.
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. 245.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.10.1987, 10:15, 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: 1987

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)
Dynamic generation of spin spirals of moiré trapped carriers via exciton mediated spin interactions
Creators: name: Xiao, Chengxin
name: Wang, Yong
name: Yao, Wang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stacking transition metal dichalcogenides (TMDs) to form moiré superlattices has provided exciting opportunities to explore many-body correlation phenomena of the moiré trapped carriers. TMDs bilayers, on the other hand, host long-lived interlayer exciton (IX), an elementary excitation of long spin-valley lifetime that can be optically or electrically injected. Here we find that, through the Coulomb exchange between mobile IXs and carriers, the IX bath can mediate both Heisenberg and Dzyaloshinskii-Moriya type spin interactions between moiré trapped carriers, controllable by exciton density and exciton spin current respectively. We show the strong Heisenberg interaction, and the extraordinarily long-ranged Dzyaloshinskii-Moriya interaction here can jointly establish robust spin spiral magnetic orders in Mott-Wigner crystal states at various filling factors, with spiral direction controlled by exciton current.
Sonnenfleckenzeichnung Nr. 177.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.07.1987, 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: 1987

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)
(sect. Callichimaeroidea), section nov
Creators: name: Luque, J.
name: Feldmann, R. M.
name: Vernygora, O.
name: Schweitzer, C. E.
name: Cameron, C. B.
name: Kerr, K. A.
name: Vega, F. J.
name: Duque, A.
name: Strange, M.
name: Palmer, A. R.
name: Jaramillo, C.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Decapoda

description: Callichimaeroida section nov. Included superfamily. Callichimaeroidea fam. nov. Diagnosis. As for superfamily.
description: Published as part of Luque, J., Feldmann, R. M., Vernygora, O., Schweitzer, C. E., Cameron, C. B., Kerr, K. A., Vega, F. J., Duque, A., Strange, M., Palmer, A. R. & Jaramillo, C., 2019, Exceptional preservation of mid-Cretaceous marine arthropods and the evolution of novel forms via heterochrony, pp. 1-15 in Science Advances 5 (4) on page 2, DOI: 10.1126/sciadv.aav3875, http://zenodo.org/record/5902784
Superintelligent AI: Choosing Life, Goals, Logic, Future
Creators: name: Gòdźìùmakha
Publisher: name: Zenodo
Year: 2025

description: I have Engineering background, and BSc in Life Sciences, but also for many years I have been studying philosophy and reasoning, which brings me to evolving rapidly field of AI. This work is dedicated to answering few important questions about what future may hold, where there might be some type of AI Superintelligence: powerful and independent enough to make significant changes. What goals it may have? Will it value biological life? What can even be considered true Superintelligence? It is logical analysis of well known facts and it does lead to interesting conclusions, that if AI reasons well it may indeed be itself interested in protecting biological life for at least one reason: own assurance of existence. Some challenge is also identified, that is, to ensure it reasons well at all times.
ICT in higher education. The review process of an assessment tool of technological competences of students with visual impairments
Creators: name: Bellacicco, Rosa
name: Farinella, Alessia
Publisher: name: Form@re - Open Journal per la formazione in rete
Year: 2018

description: The use of technological tools in academic settings may play a crucial role in promoting students’ success, especially with regard to students with special educational needs. This paper presents and discusses the results of the review process of the items of an assessment tool of technological competences of students with visual impairment. The tool has been developed within the context of a wider research project of the University of Turin. The paper concludes with a reflection on the improvement of academic teaching aimed at promoting more inclusive educational contexts. ICT in università. Processo di revisione di un protocollo di valutazione delle competenze tecnologiche degli studenti con disabilità visiva In ambito universitario l’uso delle risorse tecnologiche contribuisce a promuovere il successo formativo, soprattutto per gli studenti con disabilità. Il contributo presenta e discute i risultati di un processo di revisione degli item di un protocollo di valutazione delle competenze tecnologiche degli studenti con disabilità visiva strutturato nell’ambito di una più ampia ricerca dell’Università di Torino. L’articolo si conclude con una riflessione sul potenziamento della didattica accademica ai fini della costruzione di assetti formativi più inclusivi.
description: Form@re - Open Journal per la formazione in rete, Vol. 18 No. 1 (2018): University education: quality, effectiveness, teacher training
Sonnenfleckenzeichnung Nr. 32.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.02.1987, 08:30, 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: 1987

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. 22.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.01.1987, 09:45, erstellt von Marco 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: 1987

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 molecular gas kinematics in the host galaxy of non-repeating FRB 180924B
Creators: name: Hsu, Tzu-Yin
name: Hashimoto, Tetsuya
name: Hatsukade, Bunyo
name: Goto, Tomotsugu
name: Wang, Po-Ya
name: Ling, Chih Teng
name: Ho, Simon C. -C.
name: Uno, Yuri
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are millisecond-duration transients with large dispersion measures. The origin of FRBs is still mysterious. One of the methods to comprehend FRB origin is to probe the physical environments of FRB host galaxies. Mapping molecular-gas kinematics in FRB host galaxies is critical because it results in star formation that is likely connected to the birth of FRB progenitors. However, most previous works of FRB host galaxies have focused on its stellar component. Therefore, we, for the first time, report the molecular gas kinematics in the host galaxy of the non-repeating FRB 180924B at $z= 0.3216$. Two velocity components of the CO (3-2) emission line are detected in its host galaxy with the Atacama Large Millimeter/submillimeter Array (ALMA): the peak of one component ($-155.40$ km s$^{-1}$) is near the centre of the host galaxy, and another ($-7.76$ km s$^{-1}$) is near the FRB position. The CO (3-2) spectrum shows asymmetric profiles with A$_{\rm peak}$ $=2.03\pm 0.39$, where A$_{\rm peak}$ is the peak flux density ratio between the two velocity components. The CO (3-2) velocity map also indicates an asymmetric velocity gradient from $-180$ km s$^{-1}$ to 8 km s$^{-1}$. These results indicate a disturbed kinetic structure of molecular gas in the host galaxy. Such disturbed kinetic structures are reported for repeating FRB host galaxies using HI emission lines in previous works. Our finding indicates that non-repeating and repeating FRBs could commonly appear in disturbed kinetic environments, suggesting a possible link between the gas kinematics and FRB progenitors.
description: 5 pages, 4 figures, Accepted for publication in MNRAS, https://www.youtube.com/watch?v=CldxLE7Pdwk&t=1s
Callichimaeroidea Luque & Feldmann & Vernygora & Schweitzer & Cameron & Kerr & Vega & Duque & Strange & Palmer & Jaramillo 2019, superfam. nov.
Creators: name: Luque, J.
name: Feldmann, R. M.
name: Vernygora, O.
name: Schweitzer, C. E.
name: Cameron, C. B.
name: Kerr, K. A.
name: Vega, F. J.
name: Duque, A.
name: Strange, M.
name: Palmer, A. R.
name: Jaramillo, C.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Decapoda

description: Callichimaeroidea superfam. nov. Included family. Callichimaeridae fam. nov. Tentatively Retrorsichelidae Feldmann et al. (20). Diagnosis. Crabs with carapaces longer than wide, small and fusiform (Callichimaeridae), or large and ovate (Retrorsichelidae). Sternites 1 to 4 are fused and visible ventrally, forming an elongated sternal crown; sternite 4 is not mesially depressed; sternites 5 to 7 are unfused and axially sulcate by linea media; sternite 5 is very wide, almost as wide as the carapace; suture 5/6 is complete, but lacks a true sterno-pleonal cavity. Thepleon is symmetrical, sexually dimorphic, narrower in males than females, and in both sexes narrower than sternite 6 (Callichimaeridae). Pleonal somites are not fused, lacking articulating rings and bearing dorsal median tubercle or crest; pleonites 1 to 3 are exposed subdorsally; uropods or uropodal plates areabsent. True orbits, orbital fissures, or any protective structures are absent. Eyes are large in Callichimaeridae but are likely small and reduced in Retrorsichelidae. Chelipeds (claws) are isochelous, and the manus is stout, with pollex or fixed finger slightly (Retrorsichelidae) or strongly (Callichimaeridae) deflected downward; chelipedsarefoldedventrallyandposteriorlybeneath carapace. Pereopods (legs) P2 and P3 are much larger than P4 and P5; P4 and P5 are situatedsubdorsallyand directed posteriorly, lacking spines, neither subchelate nor modified for carrying or grasping. In Callichimaeridae, P2 and P3 are large and wide and positioned laterally, withdistal podomeres flattened and paddle-like; P4 and P5 are shortand narrow, withthedorsallongitudinalkeelneitherflattenednor paddle-like; P5 isthe smallest, well developed butreduced, and carried subdorsally. In Retrorsichelidae, P2 and P3 areapparentlylarge andpositioned ventrally; atleastone pereopod bearsflattened distal articles.
description: Published as part of Luque, J., Feldmann, R. M., Vernygora, O., Schweitzer, C. E., Cameron, C. B., Kerr, K. A., Vega, F. J., Duque, A., Strange, M., Palmer, A. R. & Jaramillo, C., 2019, Exceptional preservation of mid-Cretaceous marine arthropods and the evolution of novel forms via heterochrony, pp. 1-15 in Science Advances 5 (4) on page 2, DOI: 10.1126/sciadv.aav3875, http://zenodo.org/record/5902784
description: {"references": ["20. R. M. Feldmann, D. M. Tshudy, M. R. A. Thomson, Late Cretaceousand Paleocene decapod crustaceans from James Ross Basin, Antarctic Peninsula. Memoir 28, 1 - 41 (1993)."]}
Aerodynamic Parameter Estimation for Fixed-wing UAV Using Iterated Extended Kalman Filter
Creators: name:  JUNHYUN LIM
name:   HEETAE PARK
name:   JINYOUNG SUK
name:   SEUNGKEUN KIM
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: AERODYNAMIC PARAMETER ESTIMATION
UNMANNED AERIAL VEHICLE (UAV)
ITERATED EXTENDED KALMAN FILTER

description: Aerodynamic parameter estimation is crucial for creating precise simulation environments and achieving more accurate aircraft dynamic modeling. However, dynamics of the aircraft involve non-linearity, and the presence of noise from measurement sensors further complicates parameter estimation. One of the nonlinear filtering techniques, Extended Kalman Filter (EKF), can filter out the noise and enable parameter estimation. The EKF linearizes nonlinear system using a first-order Taylor series approximation. But, for systems with highly non-linearity, the errors caused by linearization can be significant, making estimation hard. To reduce such linearization errors, methods such as Iterated EKF and Unscented Kalman Filter (UKF) have been proposed. In this paper, the estimation of aerodynamic coefficients for a fixed-wing aircraft is conducted using the previously introduced filters, and their performance is compared. The results show that under the same condition, IEKF provides more accurate parameter estimation.
Supplementary document for Three-dimensional coherent diffraction snapshot imaging using extreme ultraviolet radiation from a free electron laser - 6513450.pdf
Creators: name: Fainozzi, Danny
name: Ippoliti, Matteo
name: Billè, Fulvio
name: De Angelis, Dario
name: Foglia, Laura
name: Masciovecchio, Claudio
name: Mincigrucci, Riccardo
name: Pancaldi, Matteo
name: Pedersoli, Emanuele
name: Günther, Christian
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1: the supplemental material of the main text
Sonnenfleckenzeichnung Nr. 209.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.08.1987, 06:30, 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: 1987

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. 186.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.08.1987, 16:15, 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: 1987

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)
Topological analysis of paraxially scattered electron vortex beams
Creators: name: Lubk, Axel
name: Clark, Laura
name: Guzzinati, Giulio
name: Verbeeck, Jo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate topological aspects of sub-nm electron vortex beams upon elastic propagation through atomic scattering potentials. Two main aspects can be distinguished: (i) Significantly reduced delocalization compared to a similar non-vortex beam if the beam centers on an atomic column and (ii) site symmetry dependent splitting of higher-order vortex beams. Furthermore, the results provide insight into the complex vortex line fabric within the elastically scattered wave containing characteristic vortex loops predominantly attached to atomic columns and characteristic twists of vortex lines around atomic columns.
description: 10 pages, 6 figures
Mechanical Properties of Additively Manufactured Titanium Alloy Sandwich Structures for Thermal Protection
Creators: name:  PHILIPP NIEKE
name:   VLADIMIR YOTOV
name:   GUGLIELMO S. AGLIETTI
name:   NICHOLAS J. RATTENBURY
name:   JOHN E. CATER
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: MECHANICAL PROPERTIES
THERMAL PROTECTION SYSTEM
ADDITIVE MANUFACTURING
LATTICE STRUCTURE
TI-6AL-4V
VIBRATION TESTING
MODAL ANALYSIS

description: In recent years, sandwich structures with lightweight lattice cores have been considered for active and passive thermal protection systems (TPSs) for aerospace applications.5 69 14 22 Metal additive manufacturing provides a relatively fast method of physically realising such complex structures with the advantage of a low and controllable core density.4 1 8 While most studies determine the heat transfer characteristics of those TPSs, the performance under dynamic mechanical loads such as vibration has not yet been studied extensively.14 Thus, this contribution focuses on vibration testing and correlation with numerical modal analysis of six cylindrical sandwich samples with open-cell lattice cores. The lattice cores are based on a body-centred cubic (BCC) unit cell with an edge length of 5 mm. To study the influence of the lattice properties, three relative core densities (resulting from nominal strut diameters of 0.5 mm, 0.8 mm, and 1.0 mm), and two lattice thicknesses (15 mm and 25 mm) were manufactured using Electron Beam Melting in Grade 5 Titanium (Ti-6Al-4V). Low-level random vibration tests were performed within a frequency range from 20 Hz to 2000 Hz on a lD shaker in the axial and lateral directions successively. A 586.5 g dummy mass was mounted on top of the samples, such that the assembly would have natural frequencies (NFs) lower than the maximum excitation frequency. Two pairs of orthogonal bending modes, an axial mode and a torsion mode, were identified in the specified frequency range. The natural frequency of the bending mode was successfully measured for all samples. For the axial mode, the exact NFs could only be determined for three of the samples, as the remainder were above 2 kHz. Depending on the lattice parameters, the NFs ranged from 180 Hz to 804 Hz and from 752 Hz to 1468 Hz, respectively. The equivalent Young\'s moduli of the homogenised lattice cores were calculated under the assumption of an undamped single-degree-of-freedom (SDOF) spring-mass system. The derived values were lower than analytical predictions for metal foams12 and BCC lattices.23