cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Do population trends in adolescent electronic cigarette use coincide with changes in prevalence of cigarette smoking?
Creators: name: Kristjansson, Alfgeir L.
name: Allegrante, John P.
name: Sigfusson, Jon
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2019
Subjects: Teenagers
Teenagers--Health and hygiene
Electronic cigarettes
Smoking

description: Adolescents who initiate electronic cigarette (EC) use without having ever used tobacco are more likely than those that have not initiated EC use to try cigarette smoking over time. However, whether rates of EC use coincide with cigarette smoking rates at the population level remains unknown. This study aimed to compare trends in ever, current, and daily use of EC and cigarette smoking among adolescents in Iceland from 2015 to 2018. We analyzed four waves of pooled cross-sectional population-based school survey data with students enrolled in the 8th, 9th and 10th grades in the national Icelandic school system (n = 42,440, boys = 50.1%). Response rates ranged between 83.3% and 86.0%. Findings for 8th, 9th, and 10th grade students, and the combined sample, revealed a consistent pattern: prevalence of cigarette smoking either remained unchanged or decreased minimally over the study period. In the combined sample rates of ever smoking remained between 9 and 10% during the entire study period, whereas the prevalence of daily cigarette smoking was around 1%. The use of EC increased 2- to 3-fold in all age groups. Ever use increased from 12% to roughly 30% in the combined group and daily use increased from about 2% to 6% during the same period. We conclude that the prevalence of adolescent cigarette smoking in Iceland remained mostly unchanged between the years 2015 and 2018, whereas EC use increased exponentially during the same period. The prevalence of EC use now far outweighs cigarette smoking in 8th-10th grade youth in Iceland.
The large-scale structure of globular clusters in the NGC 1052 group
Creators: name: Buzzo, Maria Luisa
name: Forbes, Duncan A.
name: Brodie, Jean P.
name: Janssens, Steven R.
name: Couch, Warrick J.
name: Romanowsky, Aaron J.
name: Gannon, Jonah S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Prompted by the many controversial claims involving the NGC 1052 group, including that it hosts two dark matter-free galaxies with overluminous and monochromatic globular cluster (GC) systems, here we map out the large-scale structure (LSS) of GCs over the entire group. To recover the LSS, we use archival optical CFHT imaging data. We recover two GC density maps, one based on universal photometric properties of GCs from simple stellar population models, and one based on the properties of spectroscopically confirmed GCs in DF2 and DF4 (the two dwarf galaxies with overluminous GC populations). Both selection methods reveal overdensities around the massive galaxies in the group, as well as around NGC 1052 itself, that are coincident with the positions of previously identified stellar streams and tidal features. No intragroup GCs are found connecting these structures to any of the dwarf galaxies. We find, however, two other dwarfs in the group hosting GC systems. These include RCP32 with 2 GCs with ages equivalent to the GCs around NGC 1052, and DF9 with 3 GCs with ages similar to the GCs around DF2 and DF4. We conclude that the GC distribution in the group does not strongly support any formation scenario in particular. It favours, nonetheless, scenarios relying on galaxy-galaxy interactions and on the coeval formation of GCs around the DM-free dwarf galaxies. These may include the recently proposed bullet-dwarf formation, as well as high-redshift tidal dwarf galaxy models.
description: Accepted for publication in MNRAS. 11 pages, 5 figures, 2 tables
title: Μελέτη, σχεδίαση και υλοποίηση αλγορίθμου κατασκευής φυλογενετικών δέντρων σε πλατφόρμα βασισμένη σε αναδιατασσόμενη λογική
Creators: name: Κουκκουλλής Αντρέας
Publisher: name: Technical University of Crete
Year: 2013

description: Μη διαθέσιμο
title: Σχεδιασμός και ανάπτυξη διάταξης ενίσχυσης ακουστικών σημάτων υψηλής απόδοσης και πιστότητας
Creators: name: Ίνεγλης Φίλιππος
Publisher: name: Technical University of Crete
Year: 2013

description: Μη διαθέσιμο
Chaotic Gas Accretion by Black Holes Embedded in AGN Discs as Cause of Low-spin Signatures in Gravitational Wave Events
Creators: name: Chen, Yi-Xian
name: Lin, Douglas N. C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Accretion discs around super-massive black holes (SMBH) not only power active galactic nuclei (AGNs), but also host single and binary embedded stellar-mass black holes (EBHs) that grow rapidly from gas accretion. The merger of these EBHs provides a promising mechanism for the excitation of some gravitational wave events observed by LIGO-Virgo, especially those with source masses considerably larger than isolated stellar-mass black hole binaries. In addition to their mass and mass-ratio distribution, their hitherto enigmatic small spin-parameters chi_effective carry important clues and stringent constraints on their formation channels and evolutionary pathways. Here we show that, between each coalescence, the typical rapid spin of the merged EBHs is suppressed by their subsequent accretion of gas from a turbulent environment, due to its ability to randomize the flow's spin orientation with respect to that of the EBHs on an eddy-turnover timescale. This theory provides supporting evidence for the prolificacy of EBH mergers and suggests that their mass growth may be dominated by gas accretion rather than their coalescence in AGN discs.
description: accepted by MNRAS, 11 pages, 8 figures
Bol, Peter C.; Niemeier, Wolf-Dietrich; Strasser, Robert: Griechenland - ein Führer zu den antiken Stätten
Creators: name: Stindtmann, Hellmut
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Bol, Peter C.; Niemeier, Wolf-Dietrich; Strasser, Robert: Griechenland - ein Führer zu den antiken Stätten. Stuttgart: Reclam 1998. 565 S., 24,00 DM (RUB 9627; ISBN3-15-009627-8).
description: Forum Classicum, Nr. 3 (1998): Forum Classicum
Annihilation of singlet fermionic dark matter into two photons via pseudo-scalar mediator
Creators: name: Ettefaghi, M. M.
name: Moazzemi, R.
name: Najafabadi, M. Yazdani
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the indirect detection of dark matter within an extension of the standard model (SM) including a singlet fermion as cold dark matter (CDM) and a singlet pseudo-scalar as a mediator between dark matter and the SM particles. The annihilation cross section of the CDM into two monochromatic photons is calculated and compared with the latest H.E.S.S. data. Although for dark matter masses below 1 TeV the predicted observable cross sections are far from the sensitivity of the recent gamma-ray experiments, it can be comparable to the strongest H.E.S.S. upper bounds for some models with more massive CDM.
description: 9 pages, 5 figures, typo is fixed, references updated
Multi-wavelength aperture polarimetry of debris disc host stars
Creators: name: Marshall, Jonathan P.
name: Cotton, Daniel V.
name: Bott, Kimberly
name: Bailey, Jeremy
name: Kedziora-Chudczer, Lucyna
name: Brown, Emma L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Debris discs around main sequence stars have been extensively characterised from infrared to millimetre wavelengths through imaging, spectroscopic, and total intensity (scattered light and/or thermal emission) measurements. Polarimetric observations have only been used sparingly to interpret the composition, structure, and size of dust grains in these discs. Here we present new multi-wavelength aperture polarisation observations with parts-per-million sensitivity of a sample of twelve bright debris discs, spanning a broad range of host star spectral types, and disc properties. These measurements were mostly taken with the HIgh Precision Polarimetric Instrument on the Anglo-Australian Telescope. We combine these polarisation observations with the known disc architectures and geometries of the discs to interpret the measurements. We detect significant polarisation attributable to circumstellar dust from HD 377 and HD 39060, and find tentative evidence for HD 188228 and HD 202628.
description: 25 pages, 8 figures, 9 tables, accepted for publication in MNRAS
On the design of persistently exciting inputs for data-driven control of linear and nonlinear systems
Creators: name: Alsalti, Mohammad
name: Lopez, Victor G.
name: Müller, Matthias A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the context of data-driven control, persistence of excitation (PE) of an input sequence is defined in terms of a rank condition on the Hankel matrix of the input data. For nonlinear systems, recent results employed rank conditions involving collected input and state/output data, for which no guidelines are available on how to satisfy them a priori. In this paper, we first show that a set of discrete impulses is guaranteed to be persistently exciting for any controllable LTI system. Based on this result, for certain classes of nonlinear systems, we guarantee persistence of excitation of sequences of basis functions a priori, by design of the physical input only.
Additional file 1 of Social media, vaccine hesitancy and trust deficit in immunization programs: a qualitative enquiry in Malappuram District of Kerala, India
Creators: name: Nair, Anoop T.
name: Nayar, Kesavan Rajasekharan
name: Koya, Shaffi Fazaludeen
name: Abraham, Minu
name: Lordson, Jinbert
name: Grace, Chitra
name: Sreekumar, Sreekutty
name: Chembon, Priya
name: Swarnam, Kamala
name: Pillai, A. Marthanda
name: Pandey, Anant Kumar
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Summary of the themes, underlying factors and examples of narratives from the qualitative interviews.
Active and Passive Social Media Use and Symptoms of Anxiety and Depressed Mood Among Icelandic Adolescents
Creators: name: Thorisdottir, Ingibjorg E.
name: Sigurvinsdottir, Rannveig
name: Asgeirsdottir, Bryndis Bjork
name: Allegrante, John P.
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2020
Subjects: subject: Teenagers
subject: Social media
subject: Anxiety
subject: Depression, Mental
subject: Psychology
subject: FOS: Psychology

description: Adolescent use of social media platforms such as Facebook, Instagram, and Snapchat has increased dramatically over the last decade and now pervades their everyday social lives. Active and passive social media use may impact emotional health differently, but little is known about whether and to what extent either type of social media use influences emotional distress among young people. We analyzed population survey data collected from Icelandic adolescents (N = 10,563) to document the prevalence of social media use and investigate the relationship of both active and passive social media use with self-reported symptoms of anxiety and depressed mood. A hierarchical linear regression model revealed that passive social media use was related to greater symptoms of anxiety and depressed mood among adolescents and active social media use was related to decreased symptoms of anxiety and depressed mood, even after controlling for time spent on social media. When adding known risk and protective factors, self-esteem, offline peer support, poor body image, and social comparison to the model, active use was not related to emotional distress; however, passive use was still related to adolescent symptoms of anxiety and depressed mood. The effect of social media on emotional distress differed by gender as time spent on social media had a stronger relationship with emotional distress among girls. In addition, passive use was more strongly related to symptoms of depressed mood among girls. Future research should include risk and protective factors as mediators of different types of social media use and adolescent emotional distress.
A Framework for the Automated Parameterization of a Sensorless Bearing Fault Detection Pipeline
Creators: name: Wagner, Tobias
name: Gepperth, Alexander
name: Engels, Elmar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This study proposes a framework for the automated hyperparameter optimization of a bearing fault detection pipeline for permanent magnet synchronous motors (PMSMs) without the need of external sensors. A automated machine learning (AutoML) pipeline search is performed by means of a genetic optimization to reduce human induced bias due to inappropriate parameterizations. For this purpose, a search space is defined, which includes general methods of signal processing and manipulation as well as methods tailored to the respective task and domain. The proposed framework is evaluated on the bearing fault detection use case under real world conditions. Considerations on the generalization of the deployed fault detection pipelines are also taken into account. Likewise, attention was paid to experimental studies for evaluations of the robustness of the fault detection pipeline to variations of the motors working condition parameters between the training and test domain. The present work contributes to the research of fault detection on rotating machinery in the following terms: (1) Reduction of the human induced bias to the data science process, while still considering expert and task related knowledge, ending in a generic search approach (2) tackling the bearing fault detection task without the need for external sensors (sensorless) (3) learning a domain robust fault detection pipeline applicable to varying motor operating parameters without the need of re-parameterizations or fine-tuning (4) investigations on working condition discrepancies with an excessive degree to determine the pipeline limitations regarding the abstraction of the motor parameters and the pipeline hyperparameters
description: 8 pages, 4 figures, 5 tables, ieee conference paper template used
uGMRT observations of the hot-Saturn WASP 69b: Radio-Loud Exoplanet-Exomoon Survey II (RLEES II)
Creators: name: Narang, Mayank
name: Oza, Apurva V.
name: Hakim, Kaustubh
name: Manoj, P.
name: Tyagi, Himanshu
name: Banerjee, Bihan
name: Surya, Arun
name: Nayak, Prasanta K.
name: Banyal, Ravinder K.
name: Thorngren, Daniel P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Exomoons have so far eluded ongoing searches. Several studies have exploited transit and transit timing variations and high-resolution spectroscopy to identify potential exomoon candidates. One method of detecting and confirming these exomoons is to search for signals of planet-moon interactions. In this work, we present the first radio observations of the exomoon candidate system WASP 69b. Based on the detection of alkali metals in the transmission spectra of WASP-69b, it was deduced that the system might be hosting an exomoon. WASP 69b is also one of the exoplanet systems that will be observed as part of JWST cycle-1 GTO. This makes the system an excellent target to observe and follow up. We observed the system for 32 hrs at 150 MHz and 218 MHz using the upgraded Giant Metrewave Radio Telescope (uGMRT). Though we do not detect radio emission from the systems, we place strong $3σ$ upper limits of 3.3 mJy at 150 MHz and 0.9 mJy at 218 MHz. We then use these upper limits to estimate the maximum mass loss from the exomoon candidate.
description: Accepted in MNRAS, 8 pages, 4 Figures
title: Πτυχές της καπιταλιστικής αναδιάρθρωσης και νέες τεχνολογίες. Μια προκαταρκτική έρευνα για την οργάνωση και τη λειτουργία δύο πολυεθνικών εταιριών του κλάδου της πληροφορικής και των τηλεπικοινωνιών
Creators: name: Μητσιάνης Γιάννης
Publisher: name: Technical University of Crete
Year: 2005

description: φ. 1: Οι αιτίες της οικονομικής κρίσης. Κρίση του φορντικού τρόπου κατανάλωσης ή κρίση υπερσυσσώρευσης του κεφαλαίου; -- Κεφ. 2: Για τον κοινωνικά μη ουδέτερο χαρακτήρα της τεχνολογίας και τη μετατροπή της επιστήμης σε άμεση παραγωγική δύναμη -- Κεφ. 3: Οι αλλαγές στις εργασιακές σχέσεις στα πλαίσια του μεταβαλλόμενου ρόλου του σύγχρονου καπιταλιστικού κράτους και των διαρθρωτικών αλλαγών σε επίπεδο εθνικής οικονομίας. Η περίπτωση της Ελλάδας -- Κεφ. 4: Ποσοτικές και ποιοτικές διαστάσεις των αλλαγών στη διαδικασία διεθνοποίησης της παραγωγής -- Κεφ. 5: Αποκαθετοποίηση της παραγωγής των μεγάλων επιχειρήσεων και διεύρυνση των δικτύων υπεργολάβων και προμηθευτών. Οι περιπτώσεις των δύο εξεταζόμενων εταιριών
Outpatient Treatment of Severe Acute Respiratory Syndrome Coronavirus 2 Infection to Prevent Coronavirus Disease 2019 Progression
Creators: name: Smith, D.M.
name: Cohen, M.S.
name: Eron, J.J.
name: Wohl, D.A.
name: Fischer, W.A.
Publisher: name: Oxford University Press
Year: 2021

description: As of March 2021, coronavirus disease 2019 (COVID-19) had caused more than 123 million infections and almost 3 million deaths worldwide. Dramatic advances have been made in vaccine development and nonpharmaceutical interventions to stop the spread of infection. However, treatments to stop disease progression are limited. A wide variety of "repurposed"drugs evaluated for treatment of COVID-19 have had little or no benefit. More recently, intravenous monoclonal antibody (mAb) combinations have been authorized by the US Food and Drug Administration for emergency use for outpatients with mild to moderate COVID-19 including some active against emerging severe acute respiratory syndrome coronavirus 2 variants of concern. Easier to administer therapeutics including intramuscular and subcutaneous mAbs and oral antivirals are in clinical trials. Reliable, safe, effective COVID-19 treatment for early infection in the outpatient setting is of urgent and critical importance. Availability of such treatment should lead to reduced progression of COVID-19.
Covid-19, international agricultural economy and animal sectors: the case of China, the United States and the EU
Creators: name: Chatellier, Vincent
name: Chaumet, Jean-Marc
name: Pouch, Thierry
name: Chatellier, Vincent
name: Chaumet, Jean-Marc
name: Pouch, Thierry
Publisher: name: Unknown
Year: 2022
Subjects: subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: covid-19
subject: agriculture
subject: agricultural economy
subject: EU
subject: China
subject: USA

description: The Covid-19 pandemic is a major global event. A reflection on the first implications of this sanitary crisis for the world agricultural economy and the animal sectors of three geographical areas is proposed in this article. The agri-food systems have been strongly affected by this crisis, whose global economic impacts (a 3.5 % drop in world gross domestic product and a 5.3 % drop in international trade in goods between 2019 and 2020) are affecting the purchasing power of final consumers. However, they have resisted the crisis well, both in terms of supply (stability or slight growth in the volumes of meat and milk produced on a global scale) and trade. In 2021, the sharp rise in international prices for agricultural products and the rapid resumption of economic growth, particularly in the three zones more specifically studied here (China, the United States and the European Union), suggest that agriculture should remain under pressure from sustained world demand. More than Covid-19, the impact of African swine fever in China has had a major impact on international meat trade flows for several years. In addition, the growing Chinese appetite for dairy products is playing a central role in the development of international dairy markets, to the benefit of exporting areas including the EU and the US.
Floquet generation of Majorana end modes and topological invariants
Creators: name: Thakurathi, Manisha
name: Patel, Aavishkar A.
name: Sen, Diptiman
name: Dutta, Amit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show how Majorana end modes can be generated in a one-dimensional system by varying some of the parameters in the Hamiltonian periodically in time. The specific model we consider is a chain containing spinless electrons with a nearest-neighbor hopping amplitude, a p-wave superconducting term and a chemical potential; this is equivalent to a spin-1/2 chain with anisotropic XY couplings between nearest neighbors and a magnetic field applied in the z-direction. We show that varying the chemical potential (or magnetic field) periodically in time can produce Majorana modes at the ends of a long chain. We discuss two kinds of periodic driving, periodic delta-function kicks and a simple harmonic variation with time. We discuss some distinctive features of the end modes such as the inverse participation ratio of their wave functions and their Floquet eigenvalues which are always equal to +/- 1 for time-reversal symmetric systems. For the case of periodic delta-function kicks, we use the effective Hamiltonian of a system with periodic boundary conditions to define two topological invariants. The first invariant is a well-known winding number while the second invariant has not appeared in the literature before. The second invariant is more powerful in that it always correctly predicts the numbers of end modes with Floquet eigenvalues equal to +1 and -1, while the first invariant does not. We find that the number of end modes can become very large as the driving frequency decreases. We show that periodic delta-function kicks in the hopping and superconducting terms can also produce end modes. Finally, we study the effect of electron-phonon interactions (which are relevant at finite temperatures) and a random noise in the chemical potential on the Majorana modes.
description: 15 pages, 11 figures; added more numerical and analytical results about second topological invariant, and a discussion of effects of electron-phonon interactions and noise on Majorana end modes
Impact of atmospheric turbulence on VGOS telescope location in India
Creators: name: LAHA, ARNAB
name: Böhm, Johannes
name: Böhm, Sigrid
name: Schartner, Matthias
name: Krasna, Hana
name: Balasubramanian, Nagarajan
name: Dikshit, Onkar
Publisher: name: Zenodo
Year: 2025
Subjects: EOP
VGOS
VLBI
VieSched++

description: Very Long Baseline Interferometry (VLBI) is the only space geodetic technique capable of accurately determining the complete set of Earth Orientation Parameters (EOP), including polar motion, UT1−UTC, and celestial pole offsets. Atmospheric turbulence, quantified by the refractive index structure constant (Cn), is a significant source of error in geodetic VLBI, so it is essential to consider this factor when selecting optimal telescope locations.

This study identifies 14 potential VLBI station locations across India, co-located with existing GPS stations and distributed homogeneously, to simulate their suitability for the VLBI Global Observing System (VGOS) telescope. Using zenith wet delay variances derived from GPS data over a 24-hour period, station-specific Cn values are calculated and incorporated into multiple scheduling simulations via VieSched++. These simulations evaluate the precision of EOP estimation in configurations that reflect current and future VGOS networks. The results indicate that the southern stations are optimal for polar motion and celestial pole offsets, while the eastern stations are most effective for UT1−UTC estimation.

Comparisons with utilizing an average Cn value (1.80 × 10^−7 m^−1/3) highlight the critical impact of station-specific Cn values on determining optimal telescope locations, particularly for networks with fewer stations. Stations with a Cn value higher than 2.60 × 10^−7 m^−1/3 impacts the UT1−UTC precision, and the precision of CPO and PM estimation degrades when the Cn value exceeds 3.00 × 10^−7 m^−1/3. Moreover, the study reveals that, despite a station being geometrically well-positioned, a high Cn value can make it unfavourable. This research underscores the importance of integrating stationspecific atmospheric turbulence parameters in the planning of VGOS telescope networks to improve EOP precision.
Kammerer, Andrea: Liebe hinter Masken. Die Geschichte von Euryalus und Lucretia
Creators: name: Schwillus, Harald
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Kammerer, Andrea: Liebe hinter Masken. Die Geschichte von Euryalus und Lucretia. Bamberg: Buchners 2000. 48 S. (Transit. 6; BN 5216).
description: Forum Classicum, Nr. 2 (2001): Forum Classicum
title: Χώροι Sobolev και εφαρμογές στις διαφορικές εξισώσεις με μερικές παράγωγους
Creators: name: Γαλανάκη Χρυσίδα
Publisher: name: Technical University of Crete
Year: 2005

description:  Ασθενείς τοπολογίες -- 2. Χώροι Sobolev και εφαρμογές τους στις μερικές διαφορικές εξισώσεις -- 3. Η πρώτη ιδιοτιμή του p-Λαπλασιανού Τελεστή -- 4. Ένα πρόβλημα συνοριακών τιμών σε φραγμένη περιοχή -- 5. Η εξίσωση στον RN
Implementing the Icelandic Model for Preventing Adolescent Substance Use
Creators: name: Kristjansson, Alfgeir L.
name: Mann, Michael J.
name: Sigfusson, Jon
name: Thorisdottir, Ingibjorg E.
name: Allegrante, John P.
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2020
Subjects: Substance abuse--Prevention
Youth--Substance use--Prevention
Teenagers
Health education

description: This is the second in a two-part series of articles about the Icelandic Model for Primary Prevention of Substance Use (IPM) in this volume of Health Promotion Practice. IPM is a community collaborative approach that has demonstrated remarkable effectiveness in reducing substance use initiation among youth in Iceland over the past 20 years. While the first article focused attention on the background context, theoretical orientation, evaluation and evidence of effectiveness, and the five guiding principles of the model, this second article describes the 10 core steps to practical implementation. Steps 1 to 3 focus on building and maintaining community capacity for model implementation. Steps 4 to 6 focus on implementing a rigorous system of data collection, processing, dissemination, and translation of findings. Steps 7 to 9 are designed to focus community attention and to maximize community engagement in creating and sustaining a social environment in which young people become progressively less likely to engage in substance use, including demonstrative examples from Iceland. And Step 10 focuses on the iterative, repetitive, and long-term nature of the IPM and describes a predictable arc of implementation-related opportunities and challenges. The article is concluded with a brief discussion about potential variation in community factors for implementation.
Analysis of Dark Matter Halo Structure Formation in $N$-body Simulations with Machine Learning
Creators: name: Chacón, Jazhiel
name: Gómez-Vargas, Isidro
name: Méndez, Ricardo Menchaca
name: Vázquez, José Alberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The properties of the matter density field in the initial conditions have a decisive impact on the features of the large-scale structure of the Universe as observed today. These need to be studied via $N$-body simulations, which are imperative to analyze high density collapsed regions into dark matter halos. In this paper, we train Machine Learning algorithms with information from N -body simulations to infer two properties: dark matter particle halo classification that leads to halo formation prediction with the characteristics of the matter density field traced back to the initial conditions, and dark matter halo formation by calculating the Halo Mass Function (HMF), which offers the number density of dark matter halos with a given threshold. We map the initial conditions of the matter density field into classification labels of dark matter halo structures. The Halo Mass Function of the simulations is calculated and reconstructed with theoretical methods as well as our trained algorithms. We test several Machine Learning techniques where we could find that the Random Forest and Neural Networks proved to be the better performing tools to classify dark matter particles in cosmological simulations. We also show that that it is not compulsory to use a high amount of data to train the algorithms in order to reconstruct the HMF, giving us a very good fitting function for both simulation and theoretical results.
description: 10 pages, 6 figures
K.W. Weeber: Luxus im alten Rom. Die Schwelgerei, das süße Gift...
Creators: name: Lobe, Michael
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: K.W. Weeber: Luxus im alten Rom. Die Schwelgerei, das süße Gift... Darmstadt (Primus) 2003. 176 S., (ISBN 3-89678-239-8).
description: Forum Classicum, Nr. 1 (2004): Forum Classicum
Development and Guiding Principles of the Icelandic Model for Preventing Adolescent Substance Use
Creators: name: Kristjansson, Alfgeir L.
name: Mann, Michael J.
name: Sigfusson, Jon
name: Thorisdottir, Ingibjorg E.
name: Allegrante, John P.
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2020
Subjects: Substance abuse--Prevention
Youth--Substance use--Prevention
Teenagers
Health education

description: Adolescent substance use--the consumption of alcohol, tobacco, and other harmful drugs--remains a persistent global problem and has presented ongoing challenges for public health authorities and society. In response to the high rates of adolescent substance use during the 1990s, Iceland has pioneered in the development of the Icelandic Model for Primary Prevention of Substance Use--a theory-based approach that has demonstrated effectiveness in reducing substance use in Iceland over the past 20 years. In an effort to document our approach and inform potentially replicable practice-based processes for implementation in other country settings, we outline in a two-part series of articles the background and theory, guiding principles of the approach, and the core steps used in the successful implementation of the model. In this article, we describe the background context, theoretical orientation, and development of the approach and briefly review published evaluation findings. In addition, we present the five guiding principles that underlie the Icelandic Prevention Model's approach to adolescent substance use prevention and discuss the accumulated evidence that supports effectiveness of the model. In a subsequent Part 2 article, we will identify and describe key processes and the 10 core steps of effective practice-based implementation of the model.
A huge-amplitude white-light superflare on a L0 brown dwarf discovered by GWAC survey
Creators: name: Xin, Li-Ping
name: Li, Hua-li
name: Wang, Jing
name: Han, Xu-Hui
name: Cai, Hong-Bo
name: Huang, Xin-Bo
name: Cao, Jia-Xin
name: Zhu, Yi-Nan
name: Wang, Xiang-Gao
name: Li, Guang-Wei
name: Ren, Bin
name: Gao, Cheng
name: Song, Da
name: Huang, Lei
name: Lu, Xiao-Meng
name: Bai, Jian-Ying
name: Qiu, Yu-Lei
name: Liang, En-Wei
name: Dai, Zi-Gao
name: Wang, Xiang-Yu
name: Wu, Chao
name: Deng, Jing-Song
name: Yang, Yuan-Gui
name: Wei, Jian-Yan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: White-light superflares from ultra cool stars are thought to be resulted from magnetic reconnection, but the magnetic dynamics in a fully convective star is not clear yet. In this paper, we report a stellar superflare detected with the Ground Wide Angle Camera (GWAC), along with rapid follow-ups with the F60A, Xinglong 2.16m and LCOGT telescopes. The effective temperature of the counterpart is estimated to be $2200\pm50$K by the BT-Settl model, corresponding to a spectral type of L0. The $R-$band light curve can be modeled as a sum of three exponential decay components, where the impulsive component contributes a fraction of 23\% of the total energy, while the gradual and the shallower decay phases emit 42\% and 35\% of the total energy, respectively. The strong and variable Balmer narrow emission lines indicate the large amplitude flare is resulted from magnetic activity. The bolometric energy released is about $6.4\times10^{33}$ ergs, equivalent to an energy release in a duration of 143.7 hours at its quiescent level. The amplitude of $ΔR=-8.6 $mag ( or $ΔV=-11.2$ mag), placing it one of the highest amplitudes of any ultra cool star recorded with excellent temporal resolution. We argue that a stellar flare with such rapidly decaying and huge amplitude at distances greater than 1 kpc may be false positive in searching for counterparts of catastrophic events such as gravitational wave events or gamma-ray bursts, which are valuable in time-domain astronomy and should be given more attention.
description: 9 pages, 5 figures, 1 table, MNRAS accepted
A hard look at the X-ray spectral variability of NGC 7582
Creators: name: Lefkir, Mehdy
name: Kammoun, Elias
name: Barret, Didier
name: Boorman, Peter
name: Matzeu, Gabriele
name: Miller, Jon M.
name: Nardini, Emanuele
name: Zoghbi, Abderahmen
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: NGC 7582 (z = 0.005264; D = 22.5 Mpc) is a highly variable, changing-look AGN. In this work, we explore the X-ray properties of this source using XMM-Newton and NuSTAR archival observations in the 3-40 keV range, from 2001 to 2016. NGC 7582 exhibits a long-term variability between observations but also a short-term variability in two observations that has not been studied before. To study the variability, we perform a time-resolved spectral analysis using a phenomenological model and a physically-motivated model (uxclumpy). The spectral fitting is achieved using a nested sampling Monte Carlo method. uxclumpy enables testing various geometries of the absorber that may fit AGN spectra. We find that the best model is composed of a fully covering clumpy absorber. From this geometry, we estimate the velocity, size and distance of the clumps. The column density of the absorber in the line of sight varies from Compton-thin to Compton-thick between observations. Variability over the timescale of a few tens of kilo-seconds is also observed within two observations. The obscuring clouds are consistent with being located at a distance not larger than 0.6 pc, moving with a transverse velocity exceeding $\sim 700$ km s$^{-1}$. We could put only a lower limit on the size of the obscuring cloud being larger than $10^{13}$ cm. Given the sparsity of the observations, and the limited exposure time per observation available, we cannot determine the exact structure of the obscuring clouds. The results are broadly consistent with comet-like obscuring clouds or spherical clouds with a non-uniform density profile.
description: 14 pages, 12 figures, accepted for publication in MNRAS
title: Ανάλυση υδραργύρου μετά από ακινητοποίηση σε ενεργοποιημένους ανακλαστήρες χαλαζία
Creators: name: Αρετάκη Ιωάννα-Νικόλ
Publisher: name: Technical University of Crete
Year: 2005

description: Μη διαθέσιμο
An investigation of the circumgalactic medium around z~2.2 AGN with ACA and ALMA
Creators: name: Jones, G. C.
name: Maiolino, R.
name: Carniani, S.
name: Circosta, C.
name: Fudamoto, Y.
name: Scholtz, J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: While observations of molecular gas at cosmic noon and beyond have focused on the gas within galaxies (i.e., the interstellar medium; ISM), it is also crucial to study the molecular gas reservoirs surrounding each galaxy (i.e., in the circumgalactic medium; CGM). Recent observations of galaxies and quasars hosts at high redshift (z>2) have revealed evidence for cold gaseous halos of scale r_CGM~10kpc, with one discovery of a molecular halo with r_CGM~200kpc and a molecular gas mass one order of magnitude larger than the ISM of the central galaxy. As a follow-up, we present deep ACA and ALMA observations of CO(3-2) from this source and two other quasar host galaxies at z~2.2. While we find evidence for CO emission on scales of r~10kpc, we do not find evidence for molecular gas on scales larger than r>20 kpc. Therefore, our deep data do not confirm the existence of massive molecular halos on scales of ~100 kpc for these X-ray selected quasars. As an interesting by-product of our deep observations, we obtain the tentative detection of a negative continuum signal on scales larger than r>200kpc, which might be tracing the Sunyaev-Zeldovich effect associated with the halo heated by the active galactic nucleus (AGN). If confirmed with deeper data, this could be direct evidence of the preventive AGN feedback process expected by cosmological simulations.
description: 17 pages, 12 figures. Accepted for publication in MNRAS
Novel exact ultra-compact and ultra-sparse hairy black holes emanating from regular and phantom scalar fields
Creators: name: Bakopoulos, Athanasios
name: Nakas, Theodoros
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the framework of a simple gravitational theory that contains a scalar field minimally coupled to gravity, we investigate the emergence of analytic black-hole solutions with non-trivial scalar hair of secondary type. Although it is possible for one to obtain asymptotically (A)dS solutions using our setup, in the context of the present work, we are solely interested in asymptotically flat solutions. At first, we study the properties of static and spherically symmetric black-hole solutions emanating from both regular and phantom scalar fields. We find that the regular-scalar-field-induced solutions are solutions describing ultra-compact black holes, while the phantom scalar fields generate ultra-sparse black-hole solutions. The latter are black holes that can be potentially of very low density since, contrary to ultra-compact ones, their horizon radius is always greater than the horizon radius of the corresponding Schwarzschild black hole of the same mass. Then, we generalize the above static solutions to slowly rotating ones and compute their angular velocities explicitly. Finally, the study of the axial perturbations of the derived solutions takes place, in which we show that there is always a region in the parameter space of the free parameters of our theory that allows the existence of both ultra-compact and ultra-sparse black holes.
description: 23 pages, 6 figures, an Appendix added, typos corrected, matches published version
Anne Marshall and Liz Carpanzano, The Alison Faster Show
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: Radio Unmentionable" from WBO plays. Various music plays, including country music, instrumental music, "Procol Harum" by Juicy John Pink, "Singed D.C." by Love, "Night in the City" by Joni Mitchell, and "Outside of A Small Circle of Friends" by Kind of Like Spitting. The host talks about demonstrations going on over President Nixon at Ithaca College
Hartwin Brandt, Das Ende der Antike. Geschichte des spätrömischen Reiches
Creators: name: Nitschke, Jens
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Hartwin Brandt, Das Ende der Antike. Geschichte des spätrömischen Reiches, München: C.H. Beck (Reihe: Beck Wissen) 2001 (ISBN 3- 406-44751-1).
description: Forum Classicum, Nr. 1 (2004): Forum Classicum
Features of Gaia DR3 Spectroscopic Binaries I. Tidal circularization of Main-Sequence Stars
Creators: name: Bashi, Dolev
name: Mazeh, Tsevi
name: Faigler, Simchon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Previous studies pointed out that many observed samples of short-period binaries display a cutoff period, $P_{\rm cut}$, such that almost all binaries with periods shorter than $P_{\rm cut}$ have circular orbits. This feature is probably due to long-term circularization processes induced by tidal interaction between the two stars of each binary. It seemed as if coeval main-sequence (MS) samples of open clusters display $P_{\rm cut}$ that depends on the sample age. Using the unprecedentedly large sample of MS spectroscopic orbits recently released by $\textit{Gaia}$ we have found that the $P_{\rm cut}$ does not depend on the stellar age but, instead, varies with stellar temperature, decreasing linearly from $6.5$ day at $T_{\rm eff}\sim 5700$ K to $\sim 2.5$ day at $6800$ K. $P_{\rm cut}$ was derived by a new algorithm that relied on clear upper envelopes displayed in the period-eccentricity diagrams. Our $P_{\rm cut}$ determines both the border between the circular and eccentric binaries and the location of the upper envelope. The results are inconsistent with the theory which assumes circularization occurs during the stellar MS phase, a theory that was adopted by many studies. The circularization has probably taken place at the pre-main-sequence phase, as suggested already in 1989 by Zahn and Bouchet, and later by Khaluillin and Khaluillina in 2011. Our results suggest that the weak dependence of $P_{\rm cut}$ on the cluster age is not significant, and/or might be due to the different temperatures of the samples. If indeed true, this has far-reaching implications for the theory of binary and exoplanet circularization, synchronization, and alignment.
description: 13 pages, 12 figures, 2 tables. Accepted for publication in MNRAS
Additional file 2 of A retrospective analysis of incident pregnancy in phase 1 and 2a HIV-1 vaccine study participants does not support concern for adverse pregnancy or birth outcomes
Creators: name: Stranix-Chibanda, Lynda
name: Yu, Chenchen
name: Isaacs, Margaret Brewinski
name: Allen, Mary
name: Andriesen, Jessica
name: Walsh, Stephen R.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Table S1. Details of Study Products Received.
An error term in the Central Limit Theorem for sums of discrete random variables
Creators: name: Dolgopyat, Dmitry
name: Fernando, Kasun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 60F05, 11J13, 37A50

description: We consider sums of independent identically distributed random variables whose distributions have $d+1$ atoms. Such distributions never admit an Edgeworth expansion of order $d$ but we show that for almost all parameters the Edgeworth expansion of order $d-1$ is valid and the error of the order $d-1$ Edgeworth expansion is typically of order $n^{-d/2}.$
description: To appear in the International Mathematics Research Notices
Tropical Cyclones and Climate Change
Creators: name: Walsh, Kevin J. E.
name: Camargo, Suzana J.
name: Knutson, Thomas R.
name: Kossin, James P.
name: Lee, Tsz-Cheung
name: Murakami, Hiroyuki
name: Patricola, Christina M.
Publisher: name: Columbia University
Year: 2019
Subjects: Climatology
Cyclones
Climatic changes

description: Since the Eighth International Workshop on Tropical Cyclones (IWTC-8), held in December 2014, progress has been made in our understanding of the relationship between tropical cyclone (TC) characteristics, climate and climate change. New analysis of observations has revealed trends in the latitude of maximum TC intensity and in TC translation speed. Climate models are demonstrating an increasing ability to simulate the observed TC climatology and its regional variations. The limited representation of air-sea interaction processes in most climate simulations of TCs remains an issue. Consensus projections of future TC behavior continue to indicate decreases in TC numbers, increases in their maximum intensities and increases in TC-related rainfall. Future sea level rise will exacerbate the impact of storm surge on coastal regions, assuming all other factors equal. Studies have also begun to estimate the effect on TCs of the climate change that has occurred to date. Recommendations are made regarding future research directions.
title: Αλγόριθμος διαστατικής ελάττωσης διμερών εναγκαλισμένων κβαντικών συστημάτων
Creators: name: Ανδρουλιδάκης Ιωάννης
Publisher: name: Technical University of Crete
Year: 2004

description:  Κβαντική πληροφορία -- 2. Γραμμική άλγεβρα -- 3. Αλγόριθμος διαστατικής συμπίεσης
The Environments around W Serpentis Systems: Independent Limits on System Masses and Extended Envelopes
Creators: name: Davidge, T. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Information extracted from the GAIA Data Release 3 is used to examine the stellar contents within projected separations of 10 parsecs from eight close binary systems that are either classical W Serpentis systems or related objects. The goal is to search for remnant star clusters or moving groups with proper motions that are similar to those of the binaries. While some of the binary systems have proper motions that are distinct from those of the majority of stars within the search area, there is still a tendency for W Ser stars to be accompanied by companions with separations on parsec or larger scales. At least three candidate companions are identified within the search area for each system, although in the majority of cases the numbers are much higher. Evidence is presented that SX Cas is near the center of a diffuse cluster. Color-magnitude diagrams (CMDs) of the groupings associated with the binaries are compared with isochrones, and the majority of the groupings are found to have ages in excess of 1 Gyr, indicating that they have an intermediate age. The masses of stars at the main sequence turn-off of the groupings are estimated, and these provide insights into the initial mass of the donor star in each binary system. Images from the WISE Allsky survey are also used to search for circumsystem envelopes. Extended thermal emission is found around six systems in W2 (i.e. ~4.5um) images.
description: To appear in the Astronomical Journal
title: "Κοινωνία της πληροφορίας" και "Οικονομία βασισμένη στη γνώση"
Creators: name: Παπαγιάννη Πηνελόπη
Publisher: name: Technical University of Crete
Year: 2005

description: φ. 1: Η κοινωνία της πληροφορίας στο πλαίσιο της Ευρωπαϊκής Ένωσης και στην Ελλάδα -- Κεφ. 2: Η ηλεκτρονική διακυβέρνηση (e-government) -- Κεφ. 3: "Κοινωνία της γνώσης" και "Βασισμένη στη γνώση οικονομία" -- Κεφ. 4: Οι επιπτώσεις της κοινωνίας της πληροφορίας στην οικονομία και στην αγορά εργασίας -- Κεφ. 5: Η κοινωνία της πληροφορίας και η περιφερειακή ανάπτυξη