cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Blinder: End-to-end Privacy Protection in Sensing Systems via Personalized Federated Learning
Creators: name: Yang, Xin
name: Ardakanian, Omid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper proposes a sensor data anonymization model that is trained on decentralized data and strikes a desirable trade-off between data utility and privacy, even in heterogeneous settings where the sensor data have different underlying distributions. Our anonymization model, dubbed Blinder, is based on a variational autoencoder and one or multiple discriminator networks trained in an adversarial fashion. We use the model-agnostic meta-learning framework to adapt the anonymization model trained via federated learning to each user's data distribution. We evaluate Blinder under different settings and show that it provides end-to-end privacy protection on two IMU datasets at the cost of increasing privacy loss by up to 4.00% and decreasing data utility by up to 4.24%, compared to the state-of-the-art anonymization model trained on centralized data. We also showcase Blinder's ability to anonymize the radio frequency sensing modality. Our experiments confirm that Blinder can obscure multiple private attributes at once, and has sufficiently low power consumption and computational overhead for it to be deployed on edge devices and smartphones to perform real-time anonymization of sensor data.
Consequences of war on supply chain and relative disruptions
Creators: name: Γαλάνη, Ελευθερία
name: Galani, Eleftheria
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Ναυτιλία
subject: Πόλεμος
subject: Εφοδιαστική αλυσίδα
subject: Συνέπειες

description: Για τον ουκρανικό λαό, ο πόλεμος είναι μια ανθρωπιστική τραγωδία, αλλά έχει επίσης σημαντικό οικονομικό αντίκτυπο στον κόσμο. Οι άμεσες επιπτώσεις του πολέμου στο διεθνές εμπόριο και τις επενδύσεις είναι το κύριο θέμα αυτού του δοκιμίου. Τα κύρια ζητήματα που τέθηκαν σε αυτή τη μελέτη είναι πώς θα επηρεαστεί το εμπόριο και η ευημερία, ιδιαίτερα στις αναπτυσσόμενες χώρες, στο εγγύς μέλλον. Ποιοι κλάδοι αντιμετωπίζουν τη μεγαλύτερη αναστάτωση; Ο πόλεμος έρχεται σε μια κρίσιμη καμπή στην παγκόσμια οικονομία. Επειδή τα ξεσπάσματα του COVID-19 εξακολουθούν να συμβαίνουν και υπάρχει λιγότερη πολιτική υποστήριξη, η ανάκαμψη από την ύφεση που προκαλείται από την πανδημία είναι αργή. Πολλά έθνη αντιμετωπίζουν αυξανόμενο πληθωρισμό, επομένως οι μεγάλες οικονομίες αυξάνουν τα επιτόκια για να προσπαθήσουν να τον σταματήσουν. Η ανάπτυξη στις αναπτυσσόμενες χώρες θα περιοριστεί από διαταραχές στο διεθνές εμπόριο και τις επενδύσεις, και ως αποτέλεσμα θα αυξηθούν οι πιέσεις στις τιμές, ιδιαίτερα εάν οι κυβερνήσεις επιβάλουν εμπορικούς περιορισμούς για να προστατεύσουν τις οικονομίες τους. Ο άμεσος αντίκτυπος του πολέμου γίνεται αισθητός στο εμπόριο τροφίμων και ενέργειας. Όσον αφορά την παραγωγή και εξαγωγή σιταριού, καλαμποκιού, κριθαριού, ηλιόσπορων και ηλιελαίου, η Ρωσία και η Ουκρανία συγκαταλέγονται στις επτά κορυφαίες χώρες στον κόσμο. Μαζί με τα λιπάσματα και τα γεωργικά προϊόντα, η Ρωσία είναι σημαντικός προμηθευτής ορυκτών καυσίμων όπως το αργό πετρέλαιο και το φυσικό αέριο. Οι τιμές αυξάνονται ως αποτέλεσμα των διακοπών σε αυτές τις προμήθειες, οι οποίες έχουν αρνητικές επιπτώσεις στο παγκόσμιο εμπόριο, την ευημερία και ασύμμετρες επιπτώσεις στα έθνη εξαγωγείς και εισαγωγείς. Οι υψηλότερες τιμές των εμπορευμάτων, η αύξηση της παραγωγής και οι αυξημένες αποστολές βοηθούν τους εξαγωγείς να αντισταθμίσουν μέρος της μείωσης των εξαγωγών από τη Ρωσία και την Ουκρανία.
Sonnenfleckenzeichnung Nr. 56.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.03.2012, 09:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Study on Characterization and Pesticidal Evaluation of Diterpenes Isolated from Chloroform Extract of Hedychium spicatum Sm. Rhizomes
Creators: name: Rawat, Avneesh
name: Prakash, Om
name: Kumar, Ravendra
name: Verma, A.K.
name: Kumar, Satya
name: Nagarkoti, Kirti
name: Srivastava, R.M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: A chemical study on the rhizomes of Hedychium spicatum resulted in the isolation and identification of labdane diterpenes, hedychilactone A (1), and B (2). The chemical structure of known compounds 1 and 2 were elucidated based on extensive spectral data analyses and identified by comparing their experimental spectral data with the reported data in the literature. The isolated labdane diterpenes were evaluated for their pesticide effects like nematicidal activity on Meloidogyne incognita, insecticidal activity on Spodoptera litura, and herbicidal activity on Raphanus raphanistrum seeds. The bioactivity of both compounds was predicted with the help of in silico PASS studies. The proteins/enzymes undertaken for docking studies by AutoDock4.2 to validate nematicidal activity was acetylcholinesterase (PBD ID: IC2O), for insecticidal activity was enzyme carboxylesterase (PDB ID: 1CI8), and for herbicidal activity was acetohydroxyacid synthase (PBD ID: 1YHZ). These compounds could be deduced as a viable alternative source of natural pesticidal agents and pave the way for further studies on its mechanistic approaches and field trials to ascertain its pesticidal studies.
Sonnenfleckenzeichnung Nr. 121.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.06.2012, 07:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Photometric analysis of overcontact binaries AK Her, HI Dra, V1128 Tau and V2612 Oph
Creators: name: Caliskan, S.
name: Latkovic, O.
name: Djurasevic, G.
name: Ozavci, I.
name: Basturk, O.
name: Cseki, A.
name: Senavci, H. V.
name: Kilicoglu, T.
name: Yilmaz, M.
name: Selam, S. O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze new, high quality multicolor light curves of four overcontact binaries: AK Her, HI Dra, V1128 Tau and V2612 Oph, and determine their orbital and physical parameters using the modeling program of G. Djurasevic and recently published results of radial velocity studies. The achieved precision in absolute masses is between 10 and 20%, and in absolute radii between 5 and 10%. All four systems are W UMa type binaries with bright or dark spots indicative of mass and energy transfer or surface activity. We estimate the distances and the ages of the systems using the luminosities computed through our analysis, and perform an O-C study for V1128 Tau, which reveals a complex period variation that can be interpreted in terms of mass loss/exchange and either the presence of the third body, or the magnetic activity on one of the components. We conclude that further observations of these systems are needed to deepen our understanding of their nature and variability.
description: 32 pages, 5 figures, accepted for publication in AJ
Gerbillus cheesmani Thomas 1919
Creators: name: Gbif. Org, Occdownload
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Gerbillus
Gerbillus cheesmani

description: 55 GerbillUs cheesmani    2.3 Richness pattern
 We mapped 76 rodent species of Iran following Kafash et al. (2020). Specifically, a convex hull polygon was created in the R software (R Core Team R 2017) around all the observations separately for each species within a particular terrestrial biome. We used five terrestrial biomes as defined by the World Wildlife Fund (WWF); Temperate Broadleaf and Mixed Forests, Temperate Grasslands, Savannahs and Shrublands, Temperate Conifer Forests, Montane Grasslands, Shrublands, Deserts and Xeric Shrublands (Olson et al. 2001). Range maps created that way were overlaid to produce rodent richness maps in the raster package (Hijmans 2015). To identify environmental determinants of rodent richness we selected four sets of variables: (i) capturing current climate (Fick and Hijmans 2017), (ii) past climate (Quaternary climate fluctuations) (Hijmans et al. 2005), (iii) topography (Jarvis et al. 2008) and (iv) vegetation (Pettorelli et al. 2011). Earlier studies showed that these variables are important in shaping biodiversity distribution patterns (Araújo et al. 2008; Field et al. 2009; Finarelli and Badgley 2010; McCain and Grytnes 2010; Mohammadi et al. 2019). Topographic diversity was defined as the standard deviation of elevations per 1 km 2 grid cells with 90 m resolution (the Shuttle Radar Topography Mission (SRTM) elevation model). The Quaternary climate fluctuations were estimated as changes in climate between the Last Glacial Maximum [LGM] and today (Sandel et al. 2011). Climate change (temperature/precipitation) velocity is a measurement for long-time climate variability and it shows the direction and rate at which organisms must have moved to maintain a given climate under climate change. This factor was shown to be an important driver of biodiversity distribution in different parts of the world including Iran (Kafash et al. 2020). LGM data (CCSM4) were downloaded from WorldClim (www.worldclim. org). For the current climate, we used the annual mean temperature and annual precipitation which are freely accessible from WorldClim (Fick and Hijmans 2017).
description: Published as part of Gbif. Org, Occdownload, 2022, Biogeography of rodents in Iran: species richness, elevational distribution and their environmental correlates, pp. 309-320 in Mammalia (Warsaw, Poland) (Warsaw, Poland) 86 (4) on page 312, DOI: 10.1515/mammalia-2021-0104, http://zenodo.org/record/10476972
Additive manufacturing of metal alloys for aerospace application: design, production, repair and optimization
Creators: name: Argenio, Paolo
Publisher: name: Universita degli studi di Salerno
Year: 2018
Subjects: subject: ING-IND/16 TECNOLOGIE E SISTEMI DI LAVORAZIONE
subject: Additive manufacturing

description: 2016 - 2017
description: In the industrial field the employment of innovative fabrication technologies is emerging to the purpose of cost reduction and flexibility. In particular, great interest is addressed to additive manufacturing (AM) techniques, which allow to obtain complex parts based on CAD models. AM enables the fabrication of parts with complex geometry that are impractical to be manufactured using conventional subtractive manufacturing methods. Basically, all of the AM techniques employ the same basic principle: the final component is fabricated by means of layer by layer addition of the material. Today, in addition to plastic material, several metallic materials including steel, aluminium, nickel-based superalloys, cobalt-base alloys and titanium alloys may be processed to full dense parts with properties complying with the requirements of industrial applications. There has been particular interest in aerospace and biomedical industries owing to the possibility for high performance parts with reduced overall cost for manufacturing. For the aerospace industry this could lead to a reduction of required raw materials used to fabricate an in-service component, which is known as the “buy-to-fly” ratio. AM could also lead to new innovations for lightweight structures for several applications. Repairing and overhaul of in-service parts is possible as well. Furthermore, AM provides the potential to enable novel product design which would be impossible to be managed using conventional subtractive processes... [edited by Author]
Charge, spin, and heat shot noises in the absence of average currents: Conditions on bounds at zero and finite frequencies
Creators: name: Tesser, Ludovico
name: Acciai, Matteo
name: Spånslätt, Christian
name: Monsel, Juliette
name: Splettstoesser, Janine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nonequilibrium situations where selected currents are suppressed are of interest in fields like thermoelectrics and spintronics, raising the question of how the related noises behave. We study such zero-current charge, spin, and heat noises in a two-terminal mesoscopic conductor. In the presence of voltage, spin and temperature biases, the nonequilibrium (shot) noises of charge, spin, and heat can be arbitrarily large, even if their average currents vanish. However, as soon as a temperature bias is present, additional equilibrium (thermal-like) noise necessarily occurs. We show that this equilibrium noise sets an upper bound on the zero-current charge and spin shot noises, even if additional voltage or spin biases are present. We demonstrate that these bounds can be overcome for heat transport by breaking the spin and electron-hole symmetries, respectively. By contrast, we show that the bound on the charge noise for strictly two-terminal conductors even extends into the finite-frequency regime.
description: 17 pages, 5 figures
Sonnenfleckenzeichnung Nr. 81.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.04.2012, 09:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 26.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.02.2012, 09:30, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 45.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.02.2012, 09:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 73.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.04.2012, 07:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Traces of Electron-Phonon Coupling in One-Dimensional Cuprates
Creators: name: Tang, Ta
name: Moritz, Brian
name: Peng, Cheng
name: Shen, Z. X.
name: Devereaux, Thomas P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The appearance of certain spectral features in one-dimensional (1D) cuprate materials has been attributed to a strong, extended attractive coupling between electrons. Here, using time-dependent density matrix renormalization group methods on a Hubbard-extended Holstein model, we show that extended electron-phonon ({\it e-ph}) coupling presents an obvious choice to produce such an attractive interaction that reproduces the observed spectral features and doping dependence seen in angle-resolved photoemission experiments: diminished $3k_F$ spectral weight, prominent spectral intensity of a holon-folding branch, and the correct holon band width. While extended {\it e-ph} coupling does not qualitatively alter the ground state of the 1D system compared to the Hubbard model, it quantitatively enhances the long-range superconducting correlations and suppresses spin correlations. Such an extended {\it e-ph} interaction may be an important missing ingredient in describing the physics of the structurally similar two-dimensional high-temperature superconducting layered cuprates, which may tip the balance between intertwined orders in favor of uniform $d$-wave superconductivity.
description: 6 pages, 5 figures
Billy – Buddy against Cyberbullying
Creators: name: Manjula H M
name: Yashraj
name: Nayeem Laheji
name: Shivakumar Ramu Kamate
name: Bharath G
Publisher: name: Zenodo
Year: 2025

description: This research addresses the growing concern of cyberbullying in the digital age, proposing a comprehensive solution through a chatbot-driven detection and support system. The system integrates a GPT-3.5 Turbo-powered chatbot named "Billy" for victim support and evidence submission, along with real-time communication features such as WebRTC video calls and Socket.IO-powered chats to foster community support. Built on a robust backend using Express.js and PostgreSQL and an intuitive React.js frontend, the platform ensures secure data handling and user anonymity. This multi-faceted approach aims to not only detect but also prevent cyberbullying, providing victims with immediate relief and fostering a safer online environment. Utilizing a manually labeled dataset of 20,000 tweets, a Logistic Regression model was developed for accurate detection of harmful content, achieving an accuracy of 92%.
Study on Characterization and Pesticidal Evaluation of Diterpenes Isolated from Chloroform Extract of Hedychium spicatum Sm. Rhizomes
Creators: name: Rawat, Avneesh
name: Prakash, Om
name: Kumar, Ravendra
name: Verma, A.K.
name: Kumar, Satya
name: Nagarkoti, Kirti
name: Srivastava, R.M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 80699
subject: Information Systems not elsewhere classified

description: A chemical study on the rhizomes of Hedychium spicatum resulted in the isolation and identification of labdane diterpenes, hedychilactone A (1), and B (2). The chemical structure of known compounds 1 and 2 were elucidated based on extensive spectral data analyses and identified by comparing their experimental spectral data with the reported data in the literature. The isolated labdane diterpenes were evaluated for their pesticide effects like nematicidal activity on Meloidogyne incognita, insecticidal activity on Spodoptera litura, and herbicidal activity on Raphanus raphanistrum seeds. The bioactivity of both compounds was predicted with the help of in silico PASS studies. The proteins/enzymes undertaken for docking studies by AutoDock4.2 to validate nematicidal activity was acetylcholinesterase (PBD ID: IC2O), for insecticidal activity was enzyme carboxylesterase (PDB ID: 1CI8), and for herbicidal activity was acetohydroxyacid synthase (PBD ID: 1YHZ). These compounds could be deduced as a viable alternative source of natural pesticidal agents and pave the way for further studies on its mechanistic approaches and field trials to ascertain its pesticidal studies.
Symmetric point quartic gluon vertex and momentum subtraction
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the full one loop correction to the quartic vertex of QCD at the fully symmetric point. This allows us to define a new momentum subtraction (MOM) scheme in the class of schemes introduced by Celmaster and Gonsalves. Hence using properties of the renormalization group equation, the two loop renormalization group functions for this scheme are given.
description: 25 latex pages, anc directory contains txt file with electronic version of quartic vertex function, the MOMgggg renormalization group functions, tensor basis and the projection matrix
The random Weierstrass zeta function I. Existence, uniqueness, fluctuations
Creators: name: Sodin, Mikhail
name: Wennman, Aron
name: Yakir, Oren
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G10, 60G55 (Primary) 30D99, 78A30 (Secondary)

description: We describe a construction of random meromorphic functions with prescribed simple poles with unit residues at a given stationary point process. We characterize those stationary processes with finite second moment for which, after subtracting the mean, the random function becomes stationary. These random meromorphic functions can be viewed as random analogues of the Weierstrass zeta function from the theory of elliptic functions, or equivalently as electric fields generated by an infinite random distribution of point charges.
description: 41 pages
Efficient Leaching Process of Valuable Elements from Gibbsite Ore Materials in Talet Seleim, Southwestern, Sinai, Egypt Using Green and Ecofriendly Lixiviant Agent: Optimization, Kinetic and Thermodynamic Study
Creators: name: Salem, Amany R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
classificationCode: 69999
subject: Biological Sciences not elsewhere classified

description: Here, valuable elements in Talet Seleim, Southwestern, Sinai, Egypt was leaching using methanesulfonic acid (MSA) as an environmental-friendly and ecofriendly lixiviant agent. The effects of methane sulfonic acid (MSA) concentration, time of leaching reaction, temperature, liquid/solid ratio (L/S) and stirring speed on dissolution of valuable elements in MSA were studied. The optimized conditions for dissolution of various metals were: methane sulfonic acid concentration; 150g/L, dissolution time; 300 min, temperature; 363K, liquid to solid ratio; 4 ml/g and stirring speed; 400 rpm/min. The dissolution efficiency of Zn, Cu, Ni and Pb are 81.8%, 79.47%, 76.6%, and 70.7%, respectively under the optimal conditions. Different mathematical kinetic models for the dissolution process in MSA were studied since it is very important for economic metal dissolution. The experimental data were best fitted by fitted by pseudo-second-order homogeneous reaction model, whilst lead (Pb) was best fitted the diffusion through the product or ash layer. The activation energies of the dissolution processes of different metals were evaluated. Overall, the MSA leaching system provides an efficient, clean and environmental-friendly method for dissolution of valuable metals. It can be a promising alternative for inorganic acids.
Time Resolved Phase Space Tomography of an Optomechanical Cavity
Creators: name: Suchoi, Oren
name: Shlomi, Keren
name: Ella, Lior
name: Buks, Eyal
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We experimentally study the phase space distribution (PSD) of a mechanical resonator that is simultaneously coupled to two electromagnetic cavities. The first one, operating in the microwave band, is employed for inducing either cooling or self-excited oscillation, whereas the second one, operating in the optical band, is used for displacement detection. A tomography technique is employed for extracting the PSD from the signal reflected by the optical cavity. Measurements of PSD are performed in steady state near the threshold of self-excited oscillation while sweeping the microwave cavity detuning. In addition, we monitor the time evolution of the transitions from an optomechanically cooled state to a state of self excited oscillation. This transition is induced by abruptly switching the microwave driving frequency from the red-detuned region to the blue-detuned one. The experimental results are compared with theoretical predictions that are obtained by solving the Fokker-Planck equation. The feasibility of generating quantum superposition states in the system under study is briefly discussed.
Efficient Leaching Process of Valuable Elements from Gibbsite Ore Materials in Talet Seleim, Southwestern, Sinai, Egypt Using Green and Ecofriendly Lixiviant Agent: Optimization, Kinetic and Thermodynamic Study
Creators: name: Salem, Amany R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Here, valuable elements in Talet Seleim, Southwestern Sinai, Egypt, were leached using methanesulfonic acid (MSA) as an environmentally friendly lixiviant agent. The effects of methanesulfonic acid (MSA) concentration, time of leaching reaction, temperature, liquid/solid ratio (L/S) and stirring speed on dissolution of valuable elements in MSA were studied. The optimized conditions for dissolution of various metals were: methanesulfonic acid concentration; 150g/L, dissolution time; 300 min, temperature; 363K, liquid to solid ratio; 4 ml/g and stirring speed; 400 rpm. The dissolution efficiency of Zn, Cu, Ni and Pb are 81.8%, 79.47%, 76.6%, and 70.7%, respectively under the optimal conditions. Different mathematical kinetic models for the dissolution process in MSA were studied since it is very important for economic metal dissolution. The experimental data were best fitted by pseudo-second-order homogeneous reaction model for zinc (Zn), copper (Cu) and nickel (Ni), whilst lead (Pb) was best fitted by the diffusion through the product or ash layer. The activation energies of the dissolution processes of different metals were evaluated. Overall, the MSA leaching system provides an efficient, clean and green method for dissolution of valuable metals. It can be a promising alternative to inorganic acids.
Sonnenfleckenzeichnung Nr. 12.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.01.2012, 10:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 168.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.08.2012, 09:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 137.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.07.2012, 10:00, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Ritmo 2021: producción de un corto audiovisual experimental usando técnicas de programación
Creators: name: Medina Cardona, Luis Fernando
Publisher: name: Zenodo
Year: 2022
Subjects: arte y nuevas tecnologías
OpenGLAM
audiovisual experimental

description: Ritmo 2021 es un corto audiovisual experimental producido enteramente en el lenguaje de programación Processing. Está inspirado en el corto pionero del cine abstracto «Rhythmus 21» de Hans Richter (1921) y postula el código informático como una nueva materialidad para la creación audiovisual, al igual que el soporte fílmico hace un siglo. Es un proyecto de investigación-creación de la Facultad de Artes de la Universidad Nacional de Colombia, sede Bogotá. El resultado es un conjunto de artefactos mediáticos que giran alrededor de la pieza audiovisual y que interpretan los preceptos de las tecnologías abiertas y la ciencia abierta desde varios ángulos. Un primer substrato es el software libre, ya que todos los programas usados para el proyecto son de este tipo. El otro es el académico, ya que las reflexiones sobre el proyecto han sido publicadas en acceso abierto, incluyendo el experimento editorial de un fanzine. Finalmente está la distribución misma del corto, ya que los festivales audiovisuales imponen condiciones de exclusividad. Por ello, el corto tiene una versión «binaria», que corresponde al video protegido con clave para uso de espacios artísticos pero publica el código fuente para descarga libre. Por ello , el proyecto puede enmarcarse como un experimento en el área de openGLAM que a su vez procura explorar otras formas del conocimiento científico y artístico.
The role of multiplicative noise in critical dynamics
Creators: name: Silvano, Nathan O.
name: Barci, Daniel G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the role of multiplicative stochastic processes in the description of the dynamics of an order parameter near a critical point. We study equilibrium, as well as, out-of-equilibrium properties. By means of a functional formalism, we built the Dynamical Renormalization Group equations for a real scalar order parameter with $Z_2$ symmetry, driven by a class o multiplicative stochastic processes with the same symmetry. We have computed the flux diagram, using a controlled $ε$-expansion, up to order $ε^2$. We have found that, for dimensions $d=4-ε$, the additive dynamic fixed point is unstable. The flux runs to a {\em multiplicative fixed point} driven by a diffusion function $G(ϕ)=1+g^*ϕ^2({\bf x})/2$, where $ϕ$ is the order parameter and $g^*=ε^2/18$ is the fixed point value of the multiplicative noise coupling constant. We show that, even though the position of the fixed point depends on the stochastic prescription, the critical exponents do not. Therefore, different dynamics driven by different stochastic prescriptions (such as Itô, Stratonovich, anti-Itô and so on) are in the same universality class.
description: 34 pages, 14 figures. Extended version. Final version accepted for publication in Physica A: Statistical Mechanics and its Applications
Supplementary Information from Nucleotide-free structures of KIF20A illuminate atypical mechanochemistry in this kinesin-6
Creators: name: Ranaivoson, Fanomezana Moutse
name: Crozet, Vincent
name: Benoit, Matthieu P.M.H.
name: Abdalla Mohammed Khalid, Amna
name: Kikuti, Carlos
name: Sirkia, Helena
name: Marjou, Ahmed El
name: Miserey-Lenkei, Stéphanie
name: Asenjo, Ana B.
name: Sosa, Hernando
name: Schmidt, Christoph F.
name: Rosenfeld, Steven S.
name: Houdusse, Anne
Publisher: name: The Royal Society
Year: 2023
Subjects: Biophysics
Biochemistry
Structural Biology

description: KIF20A is a critical kinesin for cell division and a promising anti-cancer drug target. The mechanisms underlying its cellular roles remain elusive. Interestingly, unusual coupling between the nucleotide- and microtubule-binding sites of this kinesin-6 has been reported, but little is known about how its divergent sequence leads to atypical motility properties. We present here the first high-resolution structure of its motor domain that delineates the highly unusual structural features of this motor, including a long L6 insertion that integrates into the core of the motor domain and that drastically affects allostery and ATPase activity. Together with the high-resolution cryo-EM microtubule-bound KIF20A structure that reveal the microtubule-binding interface, we dissect the peculiarities of the KIF20A sequence that influence its mechanochemistry, leading to low motility compared to other kinesins. Structural and functional insights from the KIF20A pre-power stroke conformation highlight the role of extended insertions in shaping the motor's mechanochemical cycle. Essential for force production and processivity is the length of the neck linker in kinesins. We highlight here the role of the sequence preceding the neck linker in controlling its backward docking and show that a neck linker 4-times longer than kinesin-1 is required for the activity of this motor.
Sonnenfleckenzeichnung Nr. 72.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.04.2012, 09:30, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Chapter 13: Chronostratigraphy: understanding rocks and time
Creators: name: Harper, David A. T.
name: Bown, Paul R
name: Coe, Angela L
Publisher: name: Geological Society of London
Year: 2022
Subjects: subject: Earth sciences
subject: Geology
subject: FOS: Earth and related environmental sciences

description: These online resources include a duplicate of Table 13.1 outlining the hierarchy of chronostratigraphical units, a tabulated version of Section 13.5.4 from the chapter that outlines the twelve key points for defining a GSSP and the flow chart for the process of defining and gaining approval for a GSSP. Each resource is on a separate page for ease of download.
NVIDIA FLARE: Federated Learning from Simulation to Real-World
Creators: name: Roth, Holger R.
name: Cheng, Yan
name: Wen, Yuhong
name: Yang, Isaac
name: Xu, Ziyue
name: Hsieh, Yuan-Ting
name: Kersten, Kristopher
name: Harouni, Ahmed
name: Zhao, Can
name: Lu, Kevin
name: Zhang, Zhihong
name: Li, Wenqi
name: Myronenko, Andriy
name: Yang, Dong
name: Yang, Sean
name: Rieke, Nicola
name: Quraini, Abood
name: Chen, Chester
name: Xu, Daguang
name: Ma, Nic
name: Dogra, Prerna
name: Flores, Mona
name: Feng, Andrew
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Networking and Internet Architecture (cs.NI)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Federated learning (FL) enables building robust and generalizable AI models by leveraging diverse datasets from multiple collaborators without centralizing the data. We created NVIDIA FLARE as an open-source software development kit (SDK) to make it easier for data scientists to use FL in their research and real-world applications. The SDK includes solutions for state-of-the-art FL algorithms and federated machine learning approaches, which facilitate building workflows for distributed learning across enterprises and enable platform developers to create a secure, privacy-preserving offering for multiparty collaboration utilizing homomorphic encryption or differential privacy. The SDK is a lightweight, flexible, and scalable Python package. It allows researchers to apply their data science workflows in any training libraries (PyTorch, TensorFlow, XGBoost, or even NumPy) in real-world FL settings. This paper introduces the key design principles of NVFlare and illustrates some use cases (e.g., COVID analysis) with customizable FL workflows that implement different privacy-preserving algorithms. Code is available at https://github.com/NVIDIA/NVFlare.
description: Accepted at the International Workshop on Federated Learning, NeurIPS 2022, New Orleans, USA (https://federated-learning.org/fl-neurips-2022); Revised version v2: added Key Components list, system metrics for homomorphic encryption experiment; Extended v3 for journal submission
Sonnenfleckenzeichnung Nr. 182.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.08.2012, 06:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)
Characterizing arbitrary quantum networks in the noisy intermediate-scale quantum era
Creators: name: Xu, Zhen-Peng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum networks are of high interest nowadays. In short, they describe the distribution of quantum sources represented by edges to different parties represented by nodes in the networks. Bundles of tools have been developed recently to characterize quantum states from the network in the ideal case. However, features of quantum networks in the noisy intermediate-scale quantum (NISQ) era invalidate most of them and call for feasible tools. By utilizing purity, covariance, and topology of quantum networks, we provide a systematic approach to tackle with arbitrary quantum networks in the NISQ era, which can be noisy, intermediate-scale, random, and sparse. One application of our method is to witness the progress of essential elements in quantum networks, like the quality of multipartite entangled sources and quantum memory.
description: 5+7 pages, accepted version
Density of states at disorder-induced phase transitions in a multichannel Majorana wire
Creators: name: Rieder, Maria-Theresa
name: Brouwer, Piet W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: An $N$-channel spinless p-wave superconducting wire is known to go through a series of $N$ topological phase transitions upon increasing the disorder strength. Here, we show that at each of those transitions the density of states shows a Dyson singularity $ν(\varepsilon) \propto \varepsilon^{-1}|\ln\varepsilon|^{-3} $, whereas $ν(\varepsilon) \propto \varepsilon^{|α|-1}$ has a power-law singularity for small energies $\varepsilon$ away from the critical points. Using the concept of "superuniversality" [Gruzberg, Read, and Vishveshwara, Phys. Rev. B 71, 245124 (2005)], we are able to relate the exponent $α$ to the wire's transport properties at zero energy and, hence, to the mean free path $l$ and the superconducting coherence length $ξ$.
description: 4+1 pages, 3 figures
Analyzing Multi-Task Learning for Abstractive Text Summarization
Creators: name: Kirstein, Frederic
name: Wahle, Jan Philip
name: Ruas, Terry
name: Gipp, Bela
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Despite the recent success of multi-task learning and pre-finetuning for natural language understanding, few works have studied the effects of task families on abstractive text summarization. Task families are a form of task grouping during the pre-finetuning stage to learn common skills, such as reading comprehension. To close this gap, we analyze the influence of multi-task learning strategies using task families for the English abstractive text summarization task. We group tasks into one of three strategies, i.e., sequential, simultaneous, and continual multi-task learning, and evaluate trained models through two downstream tasks. We find that certain combinations of task families (e.g., advanced reading comprehension and natural language inference) positively impact downstream performance. Further, we find that choice and combinations of task families influence downstream performance more than the training scheme, supporting the use of task families for abstractive text summarization.
title: Εκτίμηση ευπαθειών σε συσκευές internet of things
titleType: AlternativeTitle
title: Vulnerability assessment in internet of things devices
Creators: name: Σκεπαρνάκος, Γεώργιος
Publisher: name: University of Thessaly
Year: 2016
Subjects: subject: ΔΙΚΤΥΑ ΗΛΕΚΤΡΟΝΙΚΩΝ ΥΠΟΛΟΓΙΣΤΩΝ-ΜΕΤΡΑ ΑΣΦΑΛΕΙΑΣ
subject: ΑΣΦΑΛΕΙΑ ΗΛΕΚΤΡΟΝΙΚΩΝ ΥΠΟΛΟΓΙΣΤΩΝ
subject: ΔΙΑΔΙΚΤΥΟ ΤΩΝ ΠΡΑΓΜΑΤΩΝ

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
Sonnenfleckenzeichnung Nr. 67.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.03.2012, 08:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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. 105.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.05.2012, 07:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2012

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)