cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evidence for a gamma-ray molecular target in the enigmatic PeVatron candidate LHAASO J2108+5157
Creators: name: de la Fuente, Eduardo
name: Toledano-Juárez, Ivan
name: Kawata, Kazumasa
name: Trinidad, Miguel A.
name: Yamagishi, Mitsuyosh
name: Takekawa, Shunya
name: Tafoya, Daniel
name: Ohnishi, Munehiro
name: Nishimura, Atsushi
name: Kato, Sei
name: Sako, Takashi
name: Takita, Masato
name: Sano, Hidetoshi
name: Yadav, Ram K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: To determine the nature of the PeVatron's emission (hadronic or leptonic), it is essential to characterize the physical parameters of the environment from where it originates. We unambiguously confirm the association of molecular gas with the PeVatron candidate LHAASO J2108+5157 using unprecedented high angular-resolution (17$^{\prime \prime}$) $^{12,13}$CO($J$=1$\rightarrow$0) observations carried out with the Nobeyama 45m radio telescope. We characterize a molecular cloud in the vicinity of the PeVatron candidate LHAASO J2108+5157 by determining its physical parameters from our $^{12,13}$CO($J$=1$\rightarrow$0) line observations. We use an updated estimation of the distance to the cloud, which allows us to obtain a more reliable result. The molecular emission is compared with excess gamma-ray images obtained with Fermi--LAT at energies above 2 GeV to search for spatial correlations and test a possible hadronic ($π^0$ decay) origin for the gamma-ray emission. We find that the morphology of the spatial distribution of the CO emission is strikingly similar to that of the Fermi--LAT excess gamma-ray. By combining our observations with archival 21cm HI line data, the nucleons (HI + H$_2$) number density of the target molecular cloud is found to be 133.0 $\pm$ 45.0 cm$^{-3}$, for the measured angular size of 0.55 $\pm$ 0.02$^\circ$ at a distance of 1.6 $\pm$ 0.1 kpc. The resulting total mass of the cloud is M(HI +H$_2$) = 7.5$\pm$2.9$\times$10$^3$ M$_{\odot}$. Under a hadronic scenario, we obtain a total energy of protons of W$_p$ = 4.3$\pm$1.5 $\times$ 10$^{46}$ erg with a cutoff of 700$\pm$300 TeV, which reproduces the sub-PeV gamma-ray emission. We identified a molecular cloud in the vicinity of LHAASO J2107+5157 as the main target where cosmic rays from an unknown PeVatron produce the observed gamma-ray emission via $π^0$ decay.
description: To be published in Astronomy & Astrophysics Letters with reference number: AA/2023/46681. Received: April 18, 2023; Accepted June 22, 2023
What drives UK firms to adopt AI and robotics, and what are the consequences for jobs?
Creators: name: Hayton, James
name: Rohenkohl, Bertha
name: Pissarides, Christopher
name: Liu, Hong Yu
Publisher: name: Zenodo
Year: 2023
Subjects: Artificial Intelligence
Technology Adoption
Human Resource Management
Innovation Readiness

description: Many studies emphasise the potential for widespread job displacement from exposure to AI. Fewer studies also examine the actual impact on job creation, as well as skills demand and the quality of jobs. Since AI may have multiple positive and negative consequences, it is important to know what drives outcomes, and which factors moderate its impact. Drawing upon theories of technology adoption, we present an empirical study of factors influencing decision-maker perceptions of AI, which we hypothesise mediate organisation and environmental factors and adoption. We theorise two moderators for the impact of AI on net job creation, skills demand, and job quality. First, Regional Innovation Readiness reflects the availability of enabling resources in the local environment, in the form of an educated workforce and the connectivity infrastructure. Second, High Involvement HRM is an investment orientation which includes employees in the process of adoption. We test our hypotheses using primary data collected from 1012 organisations across all sectors of the UK economy. We find both Regional Innovation Readiness and High Involvement HRM play a significant role in influencing positive and negative outcomes from AI adoption. We discuss the significant implications for policymakers as well as managers.
On the evaporation of solar dark matter: spin-independent effective operators
Creators: name: Liang, Zheng-Liang
name: Wu, Yue-Liang
name: Yang, Zi-Qing
name: Zhou, Yu-Feng
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: As a part of the effort to investigate the implications of dark matter (DM)-nucleon effective interactions on the solar DM detection, in this paper we focus on the evaporation of the solar DM for a set of the DM-nucleon spin-independent (SI) effective operators. In order to put the evaluation of the evaporation rate on a more reliable ground, we calculate the non-thermal distribution of the solar DM using the Monte Carlo methods, rather than adopting the Maxwellian approximation. We then specify relevant signal parameter spaces for the solar DM detection for various SI effective operators. Based on the analysis, we determine the minimum DM masses for which the DM-nucleon coupling strengths can be probed from the solar neutrino observations. As an interesting application, our investigation also shows that evaporation effect can not be neglectd in a recent proposal aiming to solve the solar abundance problem by invoking the momentum-dependent asymmetric DM in the Sun.
description: With optimised calculation of the solar dark matter, matches published version
A Multi-Line Ammonia Survey of the Galactic Center Region with the Tsukuba 32-m Telescope - I. Observations and Data
Creators: name: Arai, Hitoshi
name: Nagai, Makoto
name: Fujita, Shinji
name: Nakai, Naomasa
name: Seta, Masumichi
name: Yamauchi, Aya
name: Kaneko, Hiroyuki
name: Hagiwara, Kenzaburo
name: Mamyoda, Koh-ichi
name: Miyamoto, Yusuke
name: Horie, Masa-aki
name: Ishii, Shun
name: Koide, Yusuke
name: Ogino, Mitsutoshi
name: Maruyama, Masaki
name: Hirai, Katsuaki
name: Oshiro, Wataru
name: Nagai, Satoshi
name: Akiyama, Daiki
name: Konakawa, Keita
name: Nonogawa, Hiroaki
name: Salak, Dragan
name: Terabe, Yuki
name: Nihonmatsu, Yoshiki
name: Funahashi, Fumiyoshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present survey data of the NH3 (J, K) = (1, 1)--(6, 6) lines, simultaneously observed with the Tsukuba 32-m telescope, in the main part of the central molecular zone of the Galaxy. The total number of on-source positions was 2655. The lowest three transitions were detected with S/N > 3 at 2323 positions (93% of all the on-source positions). Among 2323, the S/N of (J, K ) = (4, 4), (5, 5), and (6, 6) exceeded 3.0 at 1426 (54%), 1150 (43%), and 1359 (51%) positions, respectively. Simultaneous observations of the lines enabled us to accurately derive intensity ratios with less systematic errors. Boltzmann plots indicate there are two temperature components: cold ($\sim$ 20 K) and warm ($\sim$ 100 K). Typical intensity ratios of Tmb(2,2)/Tmb(1,1), Tmb(4,4)/Tmb(2,2), Tmb(5,5)/Tmb(4,4), and Tmb(6,6)/Tmb(3,3) were 0.71, 0.45, 0.65, and 0.17, respectively. These line ratios correspond to diversity of rotational temperature, which results from mixing of the two temperature components.
description: 19 pages, 11 figures
Methods applicable to the improvement of therapeutic drug use in a teaching hospital
Creators: name: Ioannides-Demos., Lisa
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Πολυδιάστατα μικτά γραμμικά μοντέλα-Στατιστική Ανάλυση Εργαστηριακών Δεδομένων της Οδοντιατρικής Σχολής
Creators: name: Εκουτσίδου, Σταυρούλα Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Πολυδιάστατο μικτό γραμμικό μοντέλο
Mέγιστη πιθανοφάνεια
Περιορισμένη μέγιστη πιθανοφάνεια
Multivariate linear mixed model
Maximum likelihood
Restricted maximum likelihood

description: Στόχος της εργασίας αυτής είναι η μελέτη των πολυδιάστατων μικτών γραμμικών μοντέλων και η εφαρμογή τους σε πρωτότυπα δεδομένα της οδοντιατρικής επιστήμης. Τα δεδομένα συμπεριλαμβάνουν επτά εξαρτημένες μεταβλητές και στόχος είναι η διερεύνηση του αν η ταυτόχρονη ανάλυσή τους υπερτερεί σε σχέση με την ανάλυση της κάθε μίας ξεχωριστά. Πριν την ανάλυση δίνεται συνοπτικά η θεωρία για το απλό γραμμικό μοντέλο, το γενικό γραμμικό μοντέλο, το μονοδιάστατο μικτό και τέλος για το πολυδιάστατο μικτό γραμμικό μοντέλο που είναι και το κύριο θέμα της εργασίας. Όσον αφορά το πολυδιάστατο μικτό γραμμικό μοντέλο δίνεται η μαθηματική του έκφραση, οι συναρτήσεις για τους βέλτιστους γραμμικούς αμερόληπτους εκτιμητές (BLUEs) και τις βέλτιστες γραμμικές αμερόληπτες προβλέψεις (BLUPs), καθώς και πώς αυτές προκύπτουν. Στην θεωρία επίσης συμπεριλαμβάνεται η συνάρτηση μέγιστης πιθανοφάνειας και περιορισμένης μέγιστης πιθανοφάνειας που είναι και το αντικείμενο της βελτιστοποίησης και η θεωρία της μεθόδου Newtonη οποία χρησιμοποιείται για αυτή. Η ανάλυση των δεδομένων πραγματοποιήθηκε σε γλώσσα Rμε το στατιστικό πακέτο sommer.
description: The aim of this essay is the study of multivariate mixed linear model and its application to original data of dental science. The data include seven dependent variables and the aim is to investigate whether their simultaneous analysis has advantages over the analysis of its one separately. Before the analysis, the theory for the simple linear model, the general linear model, the one-dimensional mixed model and finally for the multivariate mixed linear model, which is the main topic of the work, is given. Regarding the multivariate mixed linear model, its mathematical expression, the functions for the best linear unbiased estimators (BLUEs) and the best linear unbiased predictions (BLUPs) are given, as well as how they arise. The theory also includes the maximum likelihood function, the restricted maximum likelihood function which is the object of optimization and the theory of the Newton-Raphson algorithm which is used for it. Data analysis was performed in R language with the sommer statistical package.
Updated pseudoscalar contributions to the hadronic light-by-light of the muon (g-2)
Creators: name: Sanchez-Puertas, Pablo
name: Masjuan, Pere
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we present our recent results on a new and alternative data-driven determination for the hadronic light-by-light pseudoscalar-pole contribution to the muon $(g-2)$. Our approach is based on Canterbury approximants, a rational approach to describe the required transition form factors, which provides a systematic and model-independent framework beyond traditional large-$N_c$ approaches. As a result, we obtain a competitive determination with errors according to future $(g-2)$ experiments including, for the first time, a well-defined systematic uncertainty.
description: 13 pages, 3 figures, contributions to Determination of the Fundamental Parameters in QCD; matches the published proceedings version
Assessment of Insecticide Treated Nets coverage for Malaria Control in Kafta-Humera District, Tigray: Possession vs. Use by high-risk groups
Creators: name: Haileselassie, Berhane
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2006

description: Background: In endemic areas, children under five and pregnant women are vulnerable to malaria and are likely to benefit most from the use of nets. Use of insecticide-treated nets (ITNs) for protection against mosquito bite during sleep is highly effective. Kafta-Humera is one of the targeted Districts in the Region for ITNs intervention, but with limited information pertaining to priority of utilization. Objective: to examine the status of children under five years of age and/or pregnant women ITNs possession and utilization and its determinants for malaria control. Methodology: A comparative cross-sectional study was conducted in the rural and urban areas of the District. Based on a systematic random sampling method, 414 households were interviewed each from the selected Kebeles for both settings, regarding net possession and utilization by high-risk groups. Qualitative data were also collected through focus group discussions (FGDs) to identify views of participants, pertaining to ownership and utilization. An early morning survey was also carried out in order to observe the actual behavior of the community towards net use. Result: Net and ITN possession was 84.5% and 80.0% for rural, but 96.1% and 91.1% for urban settings. Net possession was higher among urban (OR 3.33, 95%CI 1.39, 7.98) compared to rural areas. Observed net and ITN use during the preceding night by children under five years of age was 68.6% and 67.0% for rural; and 84.6% and 79.5% for urban areas. Likewise, similar practice for pregnant women was 52.1% and 64.7%, the same for net and ITN in rural and urban areas respectively. Net re-impregnation was 93.5% for rural and 94.1% for urban areas. The FGD suggested that lower net possession in rural areas could be due to scarcity of net provision and inequity while distribution. Occupation, family size in rural areas; radio possession in urban areas and vii relative wealth and number of sleeping places had effect in both settings to own a net. Relative wealth, radio possession, malaria education message in rural and occupation in both settings had a positive effect on net use. Conclusions: Not all nets owned by the households were being utilized properly. Nevertheless, mal distribution, and scarcity were also observed within the settings. Effective IEC should be promoted and continues availability of ITNs should be in place in order to achieve effective control of malaria among the high-risk groups.
Χωρική διάσταση του τουρισμού στον ελλαδικό χώρο με έμφαση στην ορεινή περιοχή των Τζουμέρκων
Creators: name: Γούλα, Αθηνά Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Τουριστική ανάπτυξη
Χωρικός σχεδιασμός
Τζουμέρκα
Tourism development
Spatial planning
Tzoumerka

description: Ο τουρισμός είναι ένα πολυδιάστατο φαινόμενο, με τις τρεις βασικές του διαστάσεις του να είναι η περιβαλλοντική, η οικονομική και η κοινωνική. Ο βιώσιμος τουρισμός, ο οποίος αποτελεί σημείο αναφοράς και μελέτης στις μέρες μας, προάγει τη συνδυαστική προσέγγιση των ανωτέρων διαστάσεων με επίκεντρο το περιβάλλον και τη μεγιστοποίηση των θετικών επιπτώσεων της οικονομίας του τουρισμού, παράλληλα με την ελαχιστοποίηση των αρνητικών. Στο πλαίσιο της αειφόρου τουριστικής ανάπτυξης, η παρούσα εργασία εστιάζει στην χωρική διάσταση του τουρισμού στις ορεινές περιοχές, δίνοντας έμφαση στην περιοχή των Τζουμέρκων. Για την διεξαγωγή της ερευνητικής μελέτης γίνεται εστίαση στην διεθνή αρθρογραφία και βιβλιογραφία, ενώ με τα δεδομένα που θα συλλεχθούν θα πραγματοποιηθεί μια ανάλυση SWOT σχετικά με τις δυνάμεις, αδυναμίες, ευκαιρίες και απειλές της υπό μελέτης περιοχή. Δεδομένων όλων των παραπάνω, με βάση τον αειφόρο τουρισμό, τις διαπιστώσεις από την ανάλυση SWOT και τα πλαίσια των κατευθύνσεων από τα υπάρχοντα χωρικά σχέδια για τις συγκεκριμένες κατηγορίες περιοχών παρουσιάζεται η πρόταση χωρικής οργάνωσης του τουρισμού τον ορεινό όγκο των Τζουμέρκων, διαμορφώνοντας ένα στρατηγικό αναπτυξιακό σχέδιο με συγκεκριμένους στόχους και δράσεις.
description: Tourism is a multidimensional phenomenon, with its three main dimensions being environmental, economic and social. Sustainable tourism, which is a point of reference and study nowadays, promotes the combined approach of the higher dimensions with a focus on the environment and the maximization of the positive impacts of the tourism economy, while minimizing the negative ones. In the context of sustainable tourism development, present work focuses on the spatial dimension of tourism in Greece, with emphasis on the region of Tzoumerka. In order to conduct the research study, the focus is on international literature and articles, while the data collected will be used to conduct a SWOT analysis on the strengths, weaknesses, opportunities and threats of the study area. Given all of the above, based on sustainable tourism, the findings of the SWOT analysis and the framework of the guidelines of the existing spatial plans for the specific categories of areas, the proposal for the spatial organization of tourism in the mountainous area of Tzoumerka is presented, forming a strategic development plan with specific objectives and actions.
Race, Menopausal Hormone Therapy, and Invasive Breast Cancer in the Carolina Breast Cancer Study
Creators: name: Olshan, A.F.
name: Lund, J.L.
name: Robinson, W.R.
name: Moorman, P.G.
name: Tse, C.K.
name: Troester, M.A.
name: Debono, N.L.
Publisher: name: Mary Ann Liebert Inc.
Year: 2018

description: Purpose: The use of combined estrogen-progestin menopausal hormone therapy (MHT) has been shown to increase the risk of breast cancer, however, recent observational studies have suggested that the association between MHT and breast cancer may be modified by race. The objective of this study was to investigate the association between MHT use and incidence of invasive breast cancer in Black and White women aged ≥40 years at diagnosis after accounting for racial differences in patterns of MHT use and formulation. Methods: Data from the Carolina Breast Cancer Study, a population-based case-control study of Black and White women in North Carolina conducted between 1993 and 2001, was used to analyze 1474 invasive breast cancer cases and 1339 controls using unconditional logistic regression. Results: Black women were less likely than White women to use any MHT and were more likely to use an unopposed-estrogen formulation. Combined estrogen-progestin MHT use was associated with a greater odds of breast cancer in White (adjusted odds ratio [OR] 1.48, 95% confidence interval [CI]: 1.03-2.13) and Black (OR 1.43, 95% CI: 0.76-2.70) women, although the estimate in Black women was imprecise. In contrast, use of unopposed-estrogen MHT among women with prior hysterectomy was not associated with breast cancer in women of either race. Conclusion: The association between MHT and invasive breast cancer appears to be similar in both Black and White women after accounting for differences in formulation and prior hysterectomy. These findings emphasize the importance of accounting for MHT formulation in race-stratified analyses of breast cancer risk.
A study of several late-type very active-chromosphere stars
Creators: name: Innis., John Leslie
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Arten des Zeichengebrauchs und ihre Rolle im mathematischen Erkenntnisprozess
Creators: name: Krause, Christina M.
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2012
Subjects: subject: 510

description: Ziel dieses Projektes ist es, Einsichten darüber zu erlangen, wie der Einsatz von Zeichen die Konstruktion mathematischen Wissens fördern kann. Einem bestehenden Modell zur Beschreibung der Wissenskonstruktion in sozialen Interaktionen soll so eine semiotische Perspektive hinzugefügt werden. Hierzu wird untersucht, wie Schüler unterschiedliche Zeichen einsetzen und wie epistemische Handlungen dadurch unterstützt werden.
Parity anomaly and spin transmutation in quantum spin Hall Josephson junctions
Creators: name: Peng, Yang
name: Vinkler-Aviv, Yuval
name: Brouwer, Piet W.
name: Glazman, Leonid I.
name: von Oppen, Felix
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Josephson effect in a quantum spin Hall system coupled to a localized magnetic impurity. As a consequence of the fermion parity anomaly, the spin of the combined system of impurity and spin-Hall edge alternates between half-integer and integer values when the superconducting phase difference across the junction advances by $2π$. This leads to characteristic differences in the splittings of the spin multiplets by exchange coupling and single-ion anisotropy at phase differences, for which time-reserval symmetry is preserved. We discuss the resulting $8π$-periodic (or $\mathbb{Z}_4$) fractional Josephson effect in the context of recent experiments.
description: 5 pages + supplemental materials, 4 figures
IRAS 00450+7401 and the mid-infrared fade/burst cycle of R Coronae Borealis-type stars
Creators: name: Burris, William A.
name: Melis, Carl
name: Shafter, Allen W.
name: Panopoulou, Georgia V.
name: Wright, Edward L.
name: Della Costa, John
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present optical and infrared imaging and spectroscopy of the R Coronae Borealis-type (R Cor Bor) star IRAS 00450+7401. Optical spectra further confirm its classification as a cool R Cor Bor system, having a hydrogen-deficient carbon star spectral sub-class of HdC5 or later. Mid-infrared spectroscopy reveals the typical ~8 um ``hump'' seen in other R Cor Bor stars and no other features. A modern-epoch spectral energy distribution shows bright emission from hot dust having Tdust>600 K. Historical infrared data reveal generally cooler dust color temperatures combined with long-term fading trends, but provide no discernible correlation between flux level and temperature. Investigating the most mid-infrared variable R Cor Bor stars found in IRAS, AKARI, and WISE data reveals similar fading trends, bursts that can show a factor of up to 10 change in flux density between epochs, and blackbody-fit dust color temperatures that span 400-1300 K. While some R Cor Bor stars such as IRAS 00450+7401 appear to undergo fade/burst cycles in the mid-infrared, significant gaps in temporal coverage prevent conclusively identifying any preferred timescale for their mid-infrared variability and circumstellar dust temperature changes.
description: AJ accepted, 15 pages, 6 figures, 5 tables, and an appendix
Our mutual friend, no. 15
Creators: name: Dickens, Charles, 1812-1870
Publisher: name: University of Victoria Libraries
Year: 2018
Subjects: subject: Inheritance and succession
valueUri: http://id.worldcat.org/fast/973371
subject: Social classes
valueUri: http://id.worldcat.org/fast/1122346
subject: Social conflict
valueUri: http://id.worldcat.org/fast/1122378
subject: Families
valueUri: http://id.worldcat.org/fast/1728849

description: Last complete novel completed by Charles Dickens and is one of his most sophisticated works, combining savage satire with social analysis. In the opening chapters a body is found in the Thames and identified as that of John Harmon, a young man recently returned to London to receive his inheritance. Were he alive, his father's will would require him to marry Bella Wilfer, a beautiful, mercenary girl whom he had never met. Instead, the money passes to the working-class Boffins, and the effects spread into various corners of London society. Issued monthly from May 1864 to November 1865 in illustrated green paper covers. Chapters 15-17: Chapter 15. The golden dustman at his worst -- Chapter 16. The feast of the three hobgoblins -- Chapter 17. A social chorus
Superradiance of a charged scalar field coupled to the Einstein-Maxwell equations
Creators: name: Baake, Olaf
name: Rinne, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the Einstein-Maxwell-Klein-Gordon equations for a spherically symmetric scalar field scattering off a Reissner-Nordström black hole in asymptotically flat spacetime. The equations are solved numerically using a hyperboloidal evolution scheme. For suitable frequencies of the initial data, superradiance is observed, leading to a substantial decrease of mass and charge of the black hole. We also derive a Bondi mass loss formula using the Kodama vector field and investigate the late-time decay of the scalar field.
description: 12 pages, 9 figures; 3 references added
Tablet-Apps neuer Anlauf für digitale Medien in der Grundschule?
Creators: name: Krauthausen, Günter
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2012
Subjects: subject: 510

description: Verkaufsprognosen für Tablet-PCs können den tatsächlichen Absatzzahlen nicht folgen. App-Hersteller haben die Altersgruppe von 2-10 Jahren fest im Blick. Auch für das Mathematiklernen (oder was man dafür hält) stehen tausende der kleinen Programme zum Download bereit. Ein neuer Hype? Wo gibt es denn Tablets in Grundschulen, wer soll das auch bezahlen? Und macht das überhaupt Sinn? Im Vortrag wird versucht, sich diesen und weiteren Fragen aus mathematikdidaktischer Perspektive zu nähern.
Our mutual friend, no. 12
Creators: name: Dickens, Charles, 1812-1870
Publisher: name: University of Victoria Libraries
Year: 2018
Subjects: subject: Inheritance and succession
valueUri: http://id.worldcat.org/fast/973371
subject: Social classes
valueUri: http://id.worldcat.org/fast/1122346
subject: Social conflict
valueUri: http://id.worldcat.org/fast/1122378
subject: Families
valueUri: http://id.worldcat.org/fast/1728849

description: Last complete novel completed by Charles Dickens and is one of his most sophisticated works, combining savage satire with social analysis. In the opening chapters a body is found in the Thames and identified as that of John Harmon, a young man recently returned to London to receive his inheritance. Were he alive, his father's will would require him to marry Bella Wilfer, a beautiful, mercenary girl whom he had never met. Instead, the money passes to the working-class Boffins, and the effects spread into various corners of London society. Issued monthly from May 1864 to November 1865 in illustrated green paper covers. Chapters 5-7: Chapter 5. The golden dustman falls into bad company -- Chapter 6. The golden dustman falls into worse company -- Chapter 7. The friendly move takes up a strong position
The X-ray Point Source Population Hosted by Globular Clusters in the Elliptical Galaxy NGC 4261
Creators: name: Nair, Sneha
name: Dage, Kristen
name: Haggard, Daryl
name: Kundu, Arunav
name: Plotkin, Richard M.
name: Rhode, Katherine L.
name: Zepf, Stephen E.
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: Utilising archival Chandra X-ray Observatory data and Hubble Space Telescope globular cluster catalogues, we probe the time-domain properties of the low mass X-ray binary population in the elliptical galaxy NGC 4261. Of the 98 unique X-ray sources identified in this study, 62 sources are within the optical field of view and, of those, 33% are aligned with an optical cluster counterpart. We find twenty X-ray sources coincident with globular clusters; two are previously discovered ultra-luminous X-ray sources (ULXs) and eighteen are low mass X-ray binaries (GCLMXBs) with $L_X < 10^{39}$ erg s$^{-1}$. ULXs are a heterogeneous class of extremely bright X-ray binaries ($L_X > 10^{39}$ erg s$^{-1}$) and ULXs located in globular clusters (GCULXs) and may be indicators of black holes. Identifying these unusually X-ray bright sources and measuring their optical properties can provide valuable constraints on the progenitors of gravitational wave sources. We compare observations of these sources to the twenty previously-studied GCULXs from five other early-type galaxies, and find that GCULXs in NGC 4261 are of similar colour and luminosity and do not significantly deviate from the rest of the sample in terms of distance from the galaxy centre or X-ray luminosity. Both the GCULX and low mass X-ray binary (GCLMXB) populations of NGC 4261 show long term variability; the former may have implications for fast radio bursts originating in globular clusters and the latter will likely introduce additional scatter into the low mass end of GCLMXB X-ray luminosity functions.
description: Accepted to MNRAS
Assessment of the Utilization of Personal Protective Equipment among Textile Industry Workers in Dukem Town
Creators: name: Demeke, Aklilu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Background_: Utilization of personal protective equipment is one of the most important measures to protect workers from exposure to occupational hazards, especially in developing countries. However, there is a limited studies describing personal protective equipment utilization in our country Objectives_: To assess the utilization of personal protective equipment and associated factor in textile industry workers, in Dukem town Methods_: Institutional based cross-sectional study was conducted among two textile industries (Almehadin and Alasr) from June- Dec, 2016 in Dukem town. Stratified sampling followed by simple random sampling technique was used to select a total of 456 textile industry workers. Information regarding participants Practice, work-related and socio-demographic factors was collected by face to face interview using structured questionnaire. Data were checked for its completeness, cleaned, coded and entered into Epinfo version7 and exported to SPSS version 21 for analysis. Data analysis were done using logistic regression. Strength of association was measured using odds ratio, at 95% confidence intervals. Results: The utilization of personal protective equipment were 62.3 % (95%CI) at the time of data collection. The study showed availability of personal protective equipment[AOR(1.817, 95%CI(.82-4.05)], ventilation [AOR(2.25,95%CI (1.4-3.6)], 0rientation given[AOR[(0.56, 95%CI(0.32-0.95.)] and Sex [AOR1.67,95%CI(1.02-.2.71)].were independent predictors of personal protective equipment utilization on multivariate analysis. Conclusion: The proportion of PPE utilization was found 62.3%.(95%CI) unavailability of PPE, poor ventilation, orientation given, and sex were significantly predictors of PPE utilization Recommendation: The use of PPE by workers at workplace is essential element to prevent their exposure to work hazard, injuries, illness, and death. Both governmental and private sectors found in Dukem town and managers of industries should address the problem of unavailability of PPE, poor ventilation, and orientation for workers.. vi
Continuous dynamical decoupling utilizing time-dependent detuning
Creators: name: Cohen, Itsik
name: Aharon, Nati
name: Retzker, Alex
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Resilience to noise and to decoherence processes is an important ingredient for the implementation of quantum information processing, and quantum technologies. To this end, techniques such as pulsed and continuous dynamical decoupling have been proposed to reduce noise effects. In this paper, we suggest a new approach to implementing continuous dynamical decoupling techniques, that uses an extra control parameter; namely, the ability to shape the time dependence of the detuning. This approach reduces the complexity of the experimental setup, such that we are only left with noise originating from the frequency of the driving field, which is much more robust than the amplitude (Rabi frequency) noise. As an example, we show that our technique can be utilized for improved sensing.
High-throughput Quantum Chemistry: Empowering the Search for Molecular Candidates behind Unknown Spectral Signatures in Exoplanetary Atmospheres
Creators: name: Trujillo, Juan C. Zapata
name: Pettyjohn, Maria M.
name: McKemmish, Laura K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The identification of molecules in exoplanetary atmospheres is only possible thanks to the availability of high-resolution molecular spectroscopic data. However, due to its intensive and time-consuming generation process, at present, only on order 100 molecules have high-resolution spectroscopic data available, limiting new molecular detections. Using routine quantum chemistry calculations (i.e., scaled harmonic frequency calculations using the B97-1/def2-TZVPD model chemistry with median errors of 10cm-1), here we present a complementary high-throughput approach to rapidly generate approximate vibrational spectral data for 2743 molecules made from the biologically most important elements C, H, N, O, P and S. Though these data are not accurate enough to enable definitive molecular detections and does not seek to replace the need for high-resolution data, it has powerful applications in identifying potential molecular candidates responsible for unknown spectral features. We explore this application for the 4.1 micron (2439cm-1) feature in the atmospheric spectrum of WASP-39b, listing potential alternative molecular species responsible for this spectral line, together with SO2. Further applications of this big data compilation also include identifying molecules with strong absorption features that are likely detectable at quite low abundances, and training set for machine learning predictions of vibrational frequencies. Characterising exoplanetary atmospheres through molecular spectroscopy is essential to understand the planet's physico-chemical processes and likelihood of hosting life. Our rapidly generated quantum chemistry big data set will play a crucial role in supporting this understanding by giving directions into possible initial identifications of the more unusual molecules to emerge.
Nullstellen von Polynomen in 2d und 3d - virtuell und real
Creators: name: Labs, Oliver
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2012
Subjects: subject: 510

description: Die Berechnung von Nullstellen ist ein Thema, das in der Regel eher algebraisch-algorithmisch angesiedelt ist. Der Vortrag stellt einen experimentellen und visuellen Zugang mit Hilfe des Tabellenfensters von GeoGebra vor. Ein neben der Vernetzung von Algebra und Geometrie zentraler Aspekt ist dabei der Perspektivenwechsel vom x,y- zu einem p,q-Koordinatensystem, durch den ein vertieftes Verständnis ermöglicht wird. Der Vortrag treibt dies noch etwas weiter - ins Dreidimensionale.
Proton distribution radii of $^{12-19}$C illuminate features of neutron halos
Creators: name: Kanungo, R.
name: Horiuchi, W.
name: Hagen, G.
name: Jansen, G. R.
name: Navratil, P.
name: Ameil, F.
name: Atkinson, J.
name: Ayyad, Y.
name: Cortina-Gil, D.
name: Dillmann, I.
name: Estradé, A.
name: Evdokimov, A.
name: Farinon, F.
name: Geissel, H.
name: Guastalla, G.
name: Janik, R.
name: Kimura, M.
name: Knöbel, R.
name: Kurcewicz, J.
name: Litvinov, Yu. A.
name: Marta, M.
name: Mostazo, M.
name: Mukha, I.
name: Nociforo, C.
name: Ong, H. J.
name: Pietri, S.
name: Prochazka, A.
name: Scheidenberger, C.
name: Sitar, B.
name: Strmen, P.
name: Suzuki, Y.
name: Takechi, M.
name: Tanaka, J.
name: Tanihata, I.
name: Terashima, S.
name: Vargas, J.
name: Weick, H.
name: Winfield, J. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Proton radii of $^{12-19}$C densities derived from first accurate charge changing cross section measurements at 900$A$ MeV with a carbon target are reported. A thick neutron surface evolves from $\sim$ 0.5 fm in $^{15}$C to $\sim$ 1 fm in $^{19}$C. The halo radius in $^{19}$C is found to be 6.4$\pm$0.7 fm as large as $^{11}$Li. Ab initio calculations based on chiral nucleon-nucleon and three-nucleon forces reproduce well the radii.
description: 5 pages, 4 figures, accepted for publication in Phys. Rev. Lett
Numerical Solution of a Coefficient Inverse Problem with Multi-Frequency Experimental Raw Data by a Globally Convergent Algorithm
Creators: name: Nguyen, Dinh-Liem
name: Klibanov, Michael V.
name: Nguyen, Loc H.
name: Kolesov, Aleksandr E.
name: Fiddy, Michael A.
name: Liu, Hui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35R30, 35L05, 78A46

description: We analyze in this paper the performance of a newly developed globally convergent numerical method for a coefficient inverse problem for the case of multi-frequency experimental backscatter data associated to a single incident wave. These data were collected using a microwave scattering facility at the University of North Carolina at Charlotte. The challenges for the inverse problem under the consideration are not only from its high nonlinearity and severe ill-posedness but also from the facts that the amount of the measured data is minimal and that these raw data are contaminated by a significant amount of noise, due to a non-ideal experimental setup. This setup is motivated by our target application in detecting and identifying explosives. We show in this paper how the raw data can be preprocessed and successfully inverted using our inversion method. More precisely, we are able to reconstruct the dielectric constants and the locations of the scattering objects with a good accuracy, without using any advanced \emph{a priori} knowledge of their physical and geometrical properties.
Spectroscopy of the Supernova H0pe Host Galaxy at Redshift 1.78
Creators: name: Polletta, M.
name: Nonino, M.
name: Frye, B.
name: Gargiulo, A.
name: Bisogni, S.
name: Garuda, N.
name: Thompson, D.
name: Lehnert, M.
name: Pascale, M.
name: Willner, S. P.
name: Kamieneski, P.
name: Leimbach, R.
name: Cheng, C.
name: Coe, D.
name: Cohen, S. H.
name: Conselice, C. J.
name: Dai, L.
name: Diego, J.
name: Dole, H.
name: Driver, S. P.
name: D'Silva, J. C. J.
name: Fontana, A.
name: Foo, N.
name: Furtak, L. J.
name: Grogin, N. A.
name: Harrington, K.
name: Hathi, N. P.
name: Jansen, R. A.
name: Kelly, P.
name: Koekemoer, A. M.
name: Mancini, C.
name: Marshall, M. A.
name: Pierel, J. D. R.
name: Pirzkal, N.
name: Robotham, A.
name: Rutkowski, M. J.
name: Ryan,, R. E.
name: Snigula, J. M.
name: Summers, J.
name: Tompkins, S.
name: Willmer, C. N. A.
name: Windhorst, R. A.
name: Yan, H.
name: Yun, M. S.
name: Zitrin, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Supernova (SN) H0pe was discovered as a new transient in James Webb Space Telescope (JWST) NIRCam images of the galaxy cluster PLCK G165.7+67.0 taken as part of the "Prime Extragalactic Areas for Reionization and Lensing Science" (PEARLS) JWST GTO program (# 1176) on 2023 March 30 (AstroNote 2023-96; Frye et al. 2023). The transient is a compact source associated with a background galaxy that is stretched and triply-imaged by the cluster's strong gravitational lensing. This paper reports spectra in the 950-1370 nm observer frame of two of the galaxy's images obtained with Large Binocular Telescope (LBT) Utility Camera in the Infrared (LUCI) in longslit mode two weeks after the \JWST\ observations. The individual average spectra show the [OII] doublet and the Balmer and 4000 Angstrom breaks at redshift z=1.783+/-0.002. The CIGALE best-fit model of the spectral energy distribution indicates that SN H0pe's host galaxy is massive (Mstar~6x10^10 Msun after correcting for a magnification factor ~7) with a predominant intermediate age (~2 Gyr) stellar population, moderate extinction, and a magnification-corrected star formation rate ~13 Msun/yr, consistent with being below the main sequence of star formation. These properties suggest that H0pe might be a type Ia SN. Additional observations of SN H0pe and its host recently carried out with JWST (JWST-DD-4446; PI: B. Frye) will be able to both determine the SN classification and confirm its association with the galaxy analyzed in this work.
description: 6 pages, 4 figures, Letter accepted for publication in Astronomy & Astrophysics
Lie symmetries of the Shigesada-Kawasaki-Teramoto system
Creators: name: Cherniha, Roman
name: Davydovych, Vasyl'
name: Muzyka, Liliia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Shigesada-Kawasaki-Teramoto system, which consists of two reaction-diffusion equations with variable cross-diffusion and quadratic nonlinearities, is considered. The system is the most important case of the biologically motivated model proposed by Shigesada et al. A complete description of Lie symmetries for this system is derived. It is proved that the Shigesada-Kawasaki-Teramoto system admits a wide range of different Lie symmetries depending on coefficient values. In particular, the Lie symmetry operators with highly unusual structure are unveiled and applied for finding exact solutions of the relevant nonlinear system with cross-diffusion.
Bayes-factor of the ATLAS diphoton excess
Creators: name: Fowlie, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We present a calculation of Bayes-factors for the digamma resonance ($\digamma$) versus the SM in light of ATLAS 8 TeV 20.3/fb, 13 TeV 3.2/fb and 13 TeV 15.4/fb data, sidestepping any difficulties in interpreting significances in frequentist statistics. We matched, wherever possible, parameterisations in the ATLAS analysis. We calculated that the plausibility of the $\digamma$ versus the Standard Model increased by about eight in light of the 8 TeV 20.3/fb and 13 TeV 3.2/fb ATLAS data, somewhat justifying interest in $\digamma$ models. All told, however, in light of 15.4/fb data, the $\digamma$ was disfavoured by about 0.7.
description: 6 pages, 2 figures. Added discussion of prior sensitivity and ICHEP data
Statistical properties of damped Lyman-alpha systems from Sloan Digital Sky Survey DR12
Creators: name: Bird, Simeon
name: Garnett, Roman
name: Ho, Shirley
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present new estimates for the statistical properties of damped Lyman-$α$ absorbers (DLAs). We compute the column density distribution function at $z>2$, the line density, $\mathrm{d}N/\mathrm{d}X$, and the neutral hydrogen density, $Ω_\mathrm{DLA}$. Our estimates are derived from the DLA catalogue of Garnett 2016, which uses the SDSS-III DR12 quasar spectroscopic survey. This catalogue provides a probability that a given spectrum contains a DLA, allowing us to use even the noisiest data without biasing our results and thus substantially increase our sample size. We measure a non-zero column density distribution function at $95\%$ confidence for all column densities $N_\mathrm{HI} < 5\times 10^{22}$ cm$^{-2}$. We make the first measurements from SDSS of $\mathrm{d}N/\mathrm{d}X$ and $Ω_\mathrm{DLA}$ at $z>4$. We show that our results are insensitive to the signal-to-noise ratio of the spectra, but that there is a residual dependence on quasar redshift for $z<2.5$, which may be due to remaining systematics in our analysis.
description: 7 pages, 6 figures, plus 6 tables of figure values. Accepted by MNRAS with minor changes
Assessment of the relationship between under-nutrition and malaria in preschool children at Bahir Dar special zone, Ethiopia: a comparative cross-sectional study
Creators: name: Yimam, Hamid
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: Background: Malaria and under-nutrition are the two major causes of childhood mortality in sub- Saharan Africa. More than half of child mortality related to major infectious diseases is attributed at least in part to under nutrition. In Ethiopia both under nutrition and malaria are very important public health problem. Although the relationship of malnutrition and respiratory infection, diarrheal diseases is well studied, the relation with malaria is still controversial. The information that obtained in this study will help to develop clear guideline on management of under nutrition and malaria at individual as well as at community level. Objective: To assess the relationship between under- nutrition and malaria in preschool children at Bahir Dar special zone, Ethiopia Methodology: A cross sectional study that compared two groups (with confirmed malaria and without confirmed malaria) was conducted to assess the relationship between malaria and undernutrition at Bahir Dar special zone. A total of 621 Samples was calculated based on sample size calculation for comparative cross sectional study design using EpiInfo Statcalc. Anthropometric measurements and clinical data were recorded by trained clinical nurses and blood film results were taken by laboratory technician in respective health centers. Stunting, wasting, and underweight of children were determined using the International Reference Population defined by the WHO using WHO Anthro software. Data were entered using EpiInfo version 3.5.4 and transformed to SPSS version 21 for cleaning and analysis. Result: The prevalence rates of stunting, underweight and wasting were 50.3%, 34.2% and 12.1% among cases respectively. Stunting (AOR = 1.614; 95%C.I. = 1.192–2.514), underweight (AOR = 1.690; 95%C.I. = 1.112– 2.903) and wasting (AOR = 2.44; 95%C.I. = 1.15–5.20) were significantly associated with confirmed cases of malaria. Other important predictors were place of residence (rural) (AOR = 2.35; 95%C.I. = 1.39 – 3.98), sex (male) (AOR = 1.88; 95%C.I. = 1.19 – 2.98), LLIN use (AOR = 0.20; 95%C.I. = 0.13 – 0.33), IRS (AOR = 0.26; 95%C.I. = 0.15 – 0.43) and educational status of the mother (above grade 12) (AOR = 0.30; 95%C.I. = 0.11 – 0.79). Conclusion and Recommendation: the major contributor factors to malaria were wasting, stunting, underweight, rural residence, male sex, LLIN use, indoor residual spray and low educational status of the mother/caregiver. Therefore, governmental and non-governmental organizations need to consider integration of malaria control program with nutrition intervention.