cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sources and Potential Health Risks of PM2.5-Bound PAHs in a Megacity of Southwest China: Importance of Studying from a Health Risk Perspective
Creators: name: Liang, Bo
name: Su, Zhonghua
name: Tian, Mi
name: Yang, Fumo
name: Gao, Min
name: Chen, Yang
name: Zhang, Liuyi
name: Xiang, Li
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) with adverse effect on human and ecosystem health is of concern worldwide. In this study, they were measured in summer and winter at an urban site in Chongqing, a megacity of southwest China to investigate their potential sources, to evaluate the inhalation cancer risks and to identify the dominant source responsible for health risk. The mean concentration of total PAHs was 9.67 ± 2.53 ng/m3 in summer, much lower than that in winter (49.6 ± 16.5 ng/m3). The source apportionment method of Positive Matrix Factorization combined with diagnostic ratios was successfully applied in this study and identified coal combustion and vehicle emission (contributing to 56% of the total PAHs mass), biomass burning (21%) and volatilization (23%) as the potential sources of PM2.5-bound PAHs in Chongqing. Regional transport from southern and southeastern regions have contributed to the elevated PM2.5-bound PAHs in summer while local and nearby areas acted as main source regions in winter mainly due to the specific topographic and meteorological conditions in Chongqing. Daily Benzo[a]pyrene equivalent (BaPeq) concentrations (2.47–17.9 ng/m3) during 97% of the winter campaign exceeded the National Ambient Air Quality Standard (2.5 ng/m3). Furthermore, the lifetime cancer risk (LCR) values denoted a high potential cancer risk in winter, especially during aerosol pollution period. The contribution from the mixed source of coal combustion and vehicle emission (64%) to LCR was higher than that to the mass concentration while that of biomass burning (13%) was lower, which may result from the emission of higher toxic compounds from the mixed source. Elevated contribution from the mixed source was observed in winter especially during pollution days, indicating the significance of controlling the sources with high health risks. The results in this study call for the attention to the source apportionment from a health risk perspective.
title: Erstellung und Evaluation eines Leitfadens zur Nutzung von Progressive Web Apps
Creators: name: Frank, Kevin
Publisher: name: Technische Hochschule Brandenburg
Year: 2019
Subjects: subject: 004 Datenverarbeitung; Informatik

description: Ein neuer Trend in der Webentwicklung besteht aus den von Google beworbenen Progressive Web Apps (PWA). Diese tragen das implizite Versprechen in sich, eine Lösung für alle Fälle zu sein. Weil solche „One Fits All“ Lösungen selten ihr Versprechen halten, untersucht diese Masterarbeit PWAs im Detail. Die Ziele waren dabei, den PWA-Begriff zu definieren, die Grenzen von PWAs zu untersuchen und diese in einem leicht zugänglichen Leitfaden zur Nutzung von PWAs festzuhalten. Der Leitfaden soll Entscheidungsträgern bei der Beantwor-tung der Frage unterstützen, ob sie in einer bestimmten Situation eine PWA entwickeln soll-ten oder nicht. Bei einer Recherche hat sich herausgestellt, dass PWAs lediglich Webanwen-dungen sind, die moderne Browsertechnologien nutzen. Entsprechend besitzen PWAs bis auf einige Ausnahmen dieselben Grenzen wie herkömmliche Web Apps. Mit diesem Vorwissen wurde dann sowohl eine Definition in deutscher Sprache als auch eine internationale Version in englischer Sprache verfasst. Aus einem detaillierten Vergleich von nativen und Web Apps wurden anschließend die Funktionen und Grenzen von PWAs ermittelt. Diese wurde in einem schriftlichen Regelwerk festgehalten, das von drei Experten in einem Peer Review geprüft und anschließend in einem Interview besprochen und korrigiert wurde. Das Ergebnis ist zwar nicht sehr repräsentativ, sowohl die Korrektheit und Vollständigkeit als auch das allgemeine Feedback der Experten ist jedoch überwiegend positiv ausgefallen. Um den leichten Zugang und eine bessere Nutzbarkeit zu gewährleisten, wurde der schriftliche Leitfaden als PWA um-gesetzt. Mit Hilfe einer Online-Umfrage wurde zunächst die Konformität dieser Leitfaden-App zum schriftlichen Regelwerk untersucht, wobei eine Evaluation von Usability und User Experience für einen späteren Zeitpunkt außerhalb der Masterarbeit angedacht wurden. Ent-sprechend konnte der Nutzen der Leitfaden-App noch nicht nachgewiesen werden. Ebenfalls haben sich die Wahl und Umsetzung der Evaluationsmethodik als suboptimal herausgestellt, wodurch die Konformität der App nicht bestätigt, sondern lediglich Hypothesen aufgestellt werden konnten. Offen geblieben sind die Erhöhung der Repräsentanz der Ergebnisse aus der Evaluation des Regelwerks, die Untersuchung der Konformität der Leitfaden-App über eine verbesserte Methodik und die Prüfung und Optimierung selbiger in Bezug auf die Usability.
Additional file 1 of Efficacy and safety of Bifidobacterium quadruple viable tablets combined with mosapride citrate in the treatment of constipation in China: a systematic review and meta-analysis
Creators: name: Luo, Mei
name: Xiong, Lishou
name: Zhang, Lu
name: Xu, Qinchang
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Project Presentation ESSS 2019
Creators: name: Sánchez-Álvarez, Leticia
Publisher: name: Zenodo
Year: 2019
Subjects: Information Retrieval
Keywords
Web of Science
ESSS

description: Short presentation about the project carried out at the European Summer School for Scientometrics 2019 (Leuven). The focus topics are "Data Retrieval and Handling" and "Identification and Extraction of Keywords" in the Web of Science database.  
Deployment of Elastic Virtual Hybrid Clusters Across Cloud Sites
Creators: name: Caballer, Miguel
name: Antonacci, Marica
name: Šustr, Zdeněk
name: Perniola, Michele
name: Moltó, Germán
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Virtual clusters are widely used computing platforms than can be deployed in multiple cloud platforms. The ability to dynamically grow and shrink the number of nodes has paved the way for customised elastic computing both for High Performance Computing and High Throughput Computing workloads. However, elasticity is typically restricted to a single cloud site, thus hindering the ability to provision computational resources from multiple geographically distributed cloud sites. To this aim, this paper introduces an architecture of open-source components that coherently deploy a virtual elastic cluster across multiple cloud sites to perform large-scale computing. These hybrid virtual elastic clusters are automatically deployed and configured using an Infrastructure as Code (IaC) approach on a distributed hybrid testbed that spans different organizations, including on-premises and public clouds, supporting automated tunneling of communications across the cluster nodes with advanced VPN topologies. The results indicate that cluster-based computing of embarrassingly parallel jobs can benefit from hybrid virtual clusters that aggregate computing resources from multiple cloud back-ends and bring them together into a dedicated, albeit virtual network. The work presented in this article has been partially funded by the European Union's (EU) Horizon 2020 research project DEEP Hybrid-DataCloud (grant agreement No 777435).
description: 33 pages, 11 figures
Pion and Kaon Masses and Pion Form Factors from Dynamical Chiral-Symmetry Breaking with Light Constituent Quarks
Creators: name: Scadron, Michael D.
name: Kleefeld, Frieder
name: Rupp, George
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Light constituent quark masses and the corresponding dynamical quark masses are determined by data, the quark-level linear sigma model, and infrared QCD. This allows to define effective nonstrange and strange current quark masses, which reproduce the experimental pion and kaon masses very accurately, by simple additivity. In contrast, the usual nonstrange and strange current quarks employed by the Particle Data Group and Chiral Perturbation Theory do not allow a straightforward quantitative explanation of the pion and kaon masses.
description: 4 pages, AIP style, contribution to conference ``Quark Confinement and the Hadron Spectrum VII'', Azores, Portugal, 2-7 September 2006
Multiculturalism and archives
Creators: name: Chan, Heather
Publisher: name: University of British Columbia
Year: 2008

description: This thesis examines the implications of multiculturalism for the management of archival material generated by private individuals, groups, and organizations in Canada. The study begins with an analysis of the history and nature of the concept of multiculturalism to identify the principles and purposes underlying both the social movement and the public policy of multiculturalism. The implications of these principles and purposes upon the institutional management of archives of private origin are then discussed within the context of archival theory. Finally, the results of a survey conducted to determine how Canadian federal, provincial, and territorial archival repositories are interpreting the concept and implementing the policy of multiculturalism are analysed to show the effect of multiculturalism on current archival methodology. The study shows that, in an attempt to respect the multicultural policy, the majority of Canadian archival institutions at the federal, provincial, and territorial levels are implementing practices which are contrary to archival principles. This thesis concludes that cultural group affiliation is a non-identifiable entity which cannot govern the institutional management of private archives, and demonstrates that the social goals of multiculturalism and archives are both attainable if archival principles dictate archival practices.
Records in a changing world
Creators: name: Krug, Joachim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In the context of this paper, a record is an entry in a sequence of random variables (RV's) that is larger or smaller than all previous entries. After a brief review of the classic theory of records, which is largely restricted to sequences of independent and identically distributed (i.i.d.) RV's, new results for sequences of independent RV's with distributions that broaden or sharpen with time are presented. In particular, we show that when the width of the distribution grows as a power law in time $n$, the mean number of records is asymptotically of order $\ln n$ for distributions with a power law tail (the \textit{Fréchet class} of extremal value statistics), of order $(\ln n)^2$ for distributions of exponential type (\textit{Gumbel class}), and of order $n^{1/(ν+1)}$ for distributions of bounded support (\textit{Weibull class}), where the exponent $ν$ describes the behaviour of the distribution at the upper (or lower) boundary. Simulations are presented which indicate that, in contrast to the i.i.d. case, the sequence of record breaking events is correlated in such a way that the variance of the number of records is asymptotically smaller than the mean.
description: 12 pages, 2 figures
Asymptotics of accessibility sets along an abnormal trajectory
Creators: name: Trélat, Emmanuel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We describe precisely, under generic conditions, the contact of the accessibility set at time $T$ with an abnormal direction, first for a single-input affine control system with constraint on the control, and then as an application for a sub-Riemannian system of rank 2. As a consequence we obtain in sub-Riemannian geometry a new splitting-up of the sphere near an abnormal minimizer $γ$ into two sectors, bordered by the first Pontryagin's cone along $γ$, called the $\xLinfty$-sector and the $\xLtwo$-sector. Moreover we find again necessary and sufficient conditions of optimality of an abnormal trajectory for such systems, for any optimization problem.
M6A Regulatory Genes Play an Important Role in the Prognosis, Progression and Immune Microenvironment of Pancreatic Adenocarcinoma
Creators: name: Xu, Fangshi
name: Zhang, Zhengliang
name: Yuan, Miao
name: Zhao, Yidi
name: Zhou, Yang
name: Pei, Honghong
name: Bai, Ling
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Computational Biology

description: The specific roles of N6-methyladenosine (m6A) regulatory genes in pancreatic adenocarcinoma (PAAD) have not been fully elucidated. In present study, a novel risk signature was constructed by five m6A-related genes (including METTL3, METTL14, KIAA1429, ALKBH5 and YTHDF1) and was identified as an independent prognostic factor (HR = 13.192) via TCGA (185 samples) databases. The immune abundances of 22 leukocyte subtypes in each PAAD sample were exhibited via the CIBERSORT algorithm. High risk group promoted infiltration levels of Macrophages M0 and M2 cells and decreased that of B cells naive, T cells CD8 and T regulatory cells.
Key exchange system - NewHope
Creators: name: Χαμαλάκη, Δέσποινα-Στυλιανή-Αρίστη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Κρυπτογραφία
RLWE
LWE
NewHope
Πλέγματα
Cryptography
Lattices

description: In this work, we initially present in Chapter 1 the theoretical background of the LWE problem. Chapter 2 describes in depth the NewHope post-quantum lattice-based cryptosystem, which is based on a variant of LWE called Ring Learning With Errors (RLWE). Chapter 3 analyses two key reuse attacks on NewHope as published in literature and our implementation of them.
description: Στην παρούσα εργασία θα παρουσιαστεί αρχικά στο κεφάλαιο 1 το θεωρητικό υπόβαθρο του προβλήματος LWE. Έπειτα, στο κεφάλαιο 2 θα εξεταστεί εις βάθος το κρυπτοσύστημα NewHope που βασίζεται στο πρόβλημα Ring Learning With Errors (RLWE) που αποτελεί παραλλαγή του προβλήματος LWE. Τέλος, στο τρίτο κεφάλαιο θα αναλυθούν δύο επιθέσεις στο NewHope όταν υπάρχει επαναχρησιμοποίηση του κλειδιού που έχουν παρουσιαστεί στη βιβλιογραφία και η υλοποίησή τους.
Analyzing supergranular power spectra using helioseismic normal-mode coupling
Creators: name: Hanson, Chris S.
name: Hanasoge, Shravan
name: Sreenivasan, Katepalli R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Normal-mode coupling is a technique applied to probe the solar interior using surface observations of oscillations. The technique, which is straightforward to implement, makes more use of the seismic information in the wavefield than other comparable local imaging techniques and therefore has the potential to significantly improve current capabilities. Here, we examine supergranulation power spectra using mode-coupling analyses of intermediate-to-high-degree modes by invoking a Cartesian-geometric description of wave propagation under the assumption that the localized patches are much smaller in size than the solar radius. We extract the supergranular power spectrum and compare the results with prior helioseismic studies. Measurements of the dispersion relation and life times of supergranulation, obtained using near surface modes (f and p$_1$), are in accord with the literature. We show that the cross-coupling between the p$_2$ and p$_3$ acoustic modes, which are capable of probing greater depths, are also sensitive to supergranulation.
description: 7 pages, 3 figures, Accepted into ApJ
Global well posedness and inviscid limit for the Korteweg-de Vries-Burgers equation
Creators: name: Guo, Zihua
name: Wang, Baoxiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q53

description: Considering the Cauchy problem for the Korteweg-de Vries-Burgers equation \begin{eqnarray*} u_t+u_{xxx}+ε|\partial_x|^{2α}u+(u^2)_x=0, \ u(0)=ϕ, \end{eqnarray*} where $0s_α)$, and uniformly globally well-posed in $H^s (s>-3/4)$ for all $ε\in (0,1)$. Moreover, we prove that for any $T>0$, its solution converges in $C([0,T]; H^s)$ to that of the KdV equation if $ε$ tends to 0.
description: 35 pages, 0 figure
SM and MSSM Higgs Boson Production: Spectra at large transverse Momentum
Creators: name: Langenegger, U.
name: Spira, M.
name: Starodumov, A.
name: Trueb, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Strategies for Higgs boson searches require the knowledge of the total production cross section and the transverse momentum spectrum. The large transverse momentum spectrum of the Higgs boson produced in gluon fusion can be quite different in the Standard Model and the Minimal Supersymmetric Standard Model. In this paper we present a comparison of the Higgs transverse momentum spectrum obtained using the PYTHIA event generator and the HIGLU program as well as the program HQT, which includes NLO corrections and a soft gluon resummation for the region of small transverse momenta. While the shapes of the spectra are similar for the Standard Model, significant differences are observed in the spectra of Minimal Supersymmetric Standard Model benchmark scenarios with large tan(beta).
description: 8 pages, 13 figures
Αναζήτηση πληροφοριών για ταξιδιωτικούς προορισμούς. Η συμβολή των μέσων κοινωνικής δικτύωσης
Creators: name: Χειρδάρης, Άγγελος Ευσταθίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Μέσα Κοινωνικής Δικτύωσης
Ταξιδιωτική Συμπεριφορά
Αναζήτηση Ταξιδιωτικών Πληροφοριών
Social Media
Travel Behavior
Travel Information Search

description: Σκοπός της παρούσας εργασίας ήταν να διερευνήσει τη συμβολή των μέσων κοινωνικής δικτύωσης, στη διαδικασία αναζήτησης πληροφοριών για ταξιδιωτικούς προορισμούς. Για να το καταφέρει αυ-τό ο ερευνητής μελέτησε τη χρήση των μέσων κοινωνικής δικτύωσης από τους ταξιδιώτες στα δια-φορετικά στάδια του ταξιδιού. Το ερευνητικό εργαλείο της έρευνας ήταν ένα ειδικά δομημένο ερω-τηματολόγιο. Για τη συλλογή των δεδομένων πραγματοποιήθηκε διαδικτυακή έρευνα στην οποία συμμετείχαν 206 άτομα. Τα αποτελέσματα της έρευνας έδειξαν ότι τα μέσα κοινωνικής δικτύωσης συμβάλουν με καθοριστικό τρόπο στην διαδικασία της αναζήτησης πληροφοριών και χρησιμοποι-ούνται τόσο πριν, όσο και κατά τη διάρκεια του ταξιδιού. Στην διαδικασία αυτή, οι συμμετέχοντες χρησιμοποιούν κυρίως το TripAdvisor και τα ταξιδιωτικά blogs με τις συνηθέστερες αναζητήσεις να αφορούν τα αξιοθέατα, τη διαμονή, τη διασκέδαση και τη γαστρονομία του προορισμού. Βασι-κοί λόγοι για τους οποίους οι συμμετέχοντες χρησιμοποιούν τα μέσα κοινωνικής δικτύωσης για την αναζήτηση πληροφοριών, είναι η γρήγορη συλλογή πληροφοριών και η δυνατότητα πρόσβασης σε σχόλια και απόψεις άλλων χρηστών. Τέλος, σύμφωνα με τα άτομα που συμμετείχαν στην έρευνα, η αναζήτηση πληροφοριών στα μέσα κοινωνικής δικτύωσης, επιτρέπει τον αποτελεσματικότερο σχεδιασμό και διευκολύνει τη λήψη αποφάσεων σε ζητήματα που αφορούν το ταξίδι.
description: The purpose of this study was to investigate the contribution of social media to the process of searching for information regarding travel destinations. To achieve this, the researcher studied the use of social media of travelers at different stages of their journey. The research tool used, was a structured questionnaire. An online survey was conducted for the data collection in which 206 people participated. The results showed that social media contribute significantly to the infor-mation retrieval process and is used both before and during the trip. In this process, participants mainly use TripAdvisor and travel blogs. The most common searches are related to sightseeing, accommodation, entertainment and local cuisine of the destination. The main reasons participants use social media are to quickly gather information and access other users’ comments and opin-ions. Finally, according to the survey findings, participants searching for information on social media allows for more effective planning and facilitates decision-making on travel issues.
Impurity susceptibility and the fate of spin-flop transitions in lightly-doped La(2)CuO(4)
Creators: name: Neto, M. B. Silva
name: Benfatto, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the occurrence of a two-step spin-flop transition and spin reorientation when a longitudinal magnetic field is applied to lightly hole-doped La(2)CuO(4). We find that for large and strongly frustrating impurities, such as Sr in La(2-x)Sr(x)CuO(4), the huge enhancement of the longitudinal susceptibility suppresses the intermediate flop and the reorientation of spins is smooth and continuous. Contrary, for small and weakly frustrating impurities, such as O in La(2)CuO(4+y), a discontinuous spin reorientation (two-step spin-flop transition) takes place. Furthermore, we show that for La(2-x)Sr(x)CuO(4) the field dependence of the magnon gaps differs qualitatively from the La(2)CuO(4) case, a prediction to be verified with Raman spectroscopy or neutron scattering.
description: 4 pages, 3 figures, For the connection between spin-flops and magnetoresistance, see cond-mat/0610818
Modellierung von Glaubwürdigkeit
Creators: name: Schulz, Konstantin
Publisher: name: Zenodo
Year: 2022
Subjects: credibility
artificial intelligence
disinformation
fake news
misinformation

description: Folien für einen Vortrag im Rahmen des Workshops zur Modellierung von Glaubwürdigkeit, der im Rahmen des Forschungsprojekts Panqura stattfand
description: Dieses Material ist im Rahmen des Forschungsprojekts PanQura (https://qurator.ai/panqura/) entstanden. PanQura (Projektkennzeichen: 03COV03E) ist Teil der Förderung durch das Bundesministerium für Bildung und Forschung (BMBF) im Rahmen des Forschungsprogramms ICT 2020.
Teprenone ameliorates diclofenac-induced small intestinal injury via inhibiting protease activated receptors 1 and 2 activity
Creators: name: Chao, Guanqun
name: Wang, Zhaojun
name: Yang, Chaoyu
name: Qian, Yanna
name: Zhang, Shuo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: This study aimed to investigate specific protein expression of injured intestinal mucosa induced by diclofenac, and explore the protective effects of teprenone on it. Intestinal damage of Sprague Dawley male rats was gradually induced by the intragastric administration of diclofenac. After the last drug administration, the intestinal mucosa was taken off with an interval of 24 h, subsequently, its general histological injury and ultrastructure were observed and analysed by a transmission electron microscope. The expression levels of PAR1 and PAR2 protein were detected by immunohistochemistry and real-time polymerase chain reaction (PCR). The Reuter and Chiu scores of small intestinal damage were 5.63 ± 1.30 and 4.25 ± 0.70 respectively in the model group, which could be protected by teprenone (100 mg/kg⋅day) with the degree of 55.7% and 44%. Optical microscopy and transmission electron microscope showed that intestinal mucosa and ultrastructure were severely damaged. Distributed in the cytoplasm or aligned with the nucleus, the expression of PAR1 and PAR2 was significantly upregulated after the administration of diclofenac, while it was relieved after the treatment of teprenone. Our study presents a new view that teprenone might protect NSAIDs-induced (diclofenac) intestinal injury via suppressing the expression of PAR1 and PAR2.
Phytochemical investigation and bioactivity studies of flowers obtained from different cultivars of Camellia sinensis plant
Creators: name: Sharma, Ranjana
name: Rana, Ajay
name: Kumar, Sanjay
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Investigation of major volatile and non-volatile phytochemicals from flowers of different cultivars of Camellia sinensis was performed. A total of 21 volatile constituents and 9 fatty acids were identified by gas chromatography -mass spectrometry (GC-MS). For evaluation of non-volatile constituents, reverse-phase high-performance liquid chromatography with diode array detection (RP-HPLC-DAD) is used. Spectral quantification of polyphenols revealed 48.88 − 60.01 mg/gm gallic acid equivalent polyphenols. Catechins estimated up to 1.14%, while theanine and caffeine content varies from 0.13% to 0.41% and 0.07% to 0.13%, respectively. Further assessment of antioxidant activity by different assays (DPPH, FRAP, RPA and FIC) showed commendable antioxidant potential. The results of antimicrobial studies showed growth inhibition of Candida albicans (17.0 ± 0.00–10.0 ± 0.00 mm) and Aspergillus niger (5 ± 0.00 to 12.5 ± 0.70 mm), indicating antifungal potential. The antiglycation assay also showed inhibition of BSA up to 94%. This study of C. sinensis flowers indicated their immense prospective as sustainable source of bioactive natural compounds.
Ballistic magnetic thermal transport coupled to phonons
Creators: name: Zavitsanos, P.
name: Zotos, X.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Motivated by thermal conductivity experiments in spin chain compounds, we propose a phenomenological model to account for a ballistic magnetic transport coupled to a diffusive phononic one, along the line of the seminal two-temperature diffusive transport Sanders-Walton model. Although the expression for the effective thermal conductivity is identical to that of Sanders-Walton, the interpretation is entirely different, as the "magnetic conductivity" is replaced by an "effective transfer conductivity" between the magnetic and phononic component. This model also reveals the fascinating possibility of visualizing the ballistic character of magnetic transport, for appropriately chosen material parameters, as a two peak counter-propagating feature in the phononic temperature. It is also appropriate for the analysis of any thermal transport experiment involving a diffusive component coupled to a ballistic one.
description: 4 pages, 3 figures
Trivializing and Orbifolding the Conifold's Base
Creators: name: Evslin, Jarah
name: Kuperstein, Stanislav
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The conifold is a cone over the space T^11, which is known to be topologically S^2xS^3. The coordinates used in the literature describe a sphere-bundle which can be proven to be topologically trivializable. We provide an explicit trivialization of this bundle, with simultaneous global coordinates for both spheres. Using this trivialization we are able to describe the topology of the base of several infinite families of chiral and non-chiral orbifolds of the conifold. We demonstrate that in each case the 2nd Betti number of the base matches the number of independent ranks in the dual quiver gauge theory.
description: 13 pages, 3 figures
Die Figur des Wissenschaftlers in der Gegenwartsliteratur
Creators: name: Λιακάκης, Νικόλαος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Επιστήμονας
Πανεπιστήμιο
Οικονομία
Κοινωνιολογία της Λογοτεχνίας
Γυναικείο φύλο
Scholar
Higher education
Economy
Sociology of Literature
Female sex

description: Η παρούσα μεταπτυχιακή εργασία με τίτλο «Η μορφή του επιστήμονα στην σύγχρονη λογοτεχνία» πραγματεύεται, υπό το πρίσμα της λογοτεχνικής ανάλυσης, τη μορφή του σύγχρονου επιστήμονα, όπως αυτή αποτυπώνεται στα λογοτεχνικά έργα: «Weiskerns Nachlass» του Christoph Hein, «Unterwerfung» του Michel Houellebecq και «Kraft» του Jonas Lüscher. Περαιτέρω, επιχειρείται μια συγκριτική-διεπιστημονική προσέγγιση του ζητήματος, αφενός με την συγκριτική ανάλυση μεταξύ δύο γερμανόφωνων μυθιστορημάτων και ενός γαλλόφωνου σε γερμανική μετάφραση και αφετέρου με την εξαγωγή πορισμάτων, βασισμένων σε κοινωνιολογικές θεωρίες, με κυριότερη εκείνη της θεωρίας των μορφών του κεφαλαίου του Πιερ Μπουρντιέ. Η ανάλυση δομείται σε δύο μέρη. Στο πρώτο μέρος, στο επίκεντρο βρίσκεται η αλληλεπίδραση του επιστήμονα με την οικονομία, στα πλαίσια της νεοφιλελευθεροποίησης και οικονομοποίησης του θεσμού του πανεπιστημίου, ενώ στο δεύτερο μέρος εξετάζεται η αλληλεπίδραση του άρρενα επιστήμονα με το γυναικείο φύλο.
description: The present master’s thesis, entitled “The character of the scholar in contemporary literature”, investigates the character of the modern scholar in three contemporary novels: Christoph Hein’s “Weiskerns Nachlass” and Jonas Lüscher’s “Kraft” written in German, and Michel Houellebecq’s “Unterwerfung”, originally written in French and subsequently translated into German. An interdisciplinary approach is adopted that includes both a comparative analysis between the two German-speaking novels and the francophone one as well as an exploration based on sociological theories, the main one being the theory of the forms of capital by Pierre Bourdieu. The analysis is divided into two parts. In the first part, the main focus is on the interface between the scholar and the economy in terms of the deregulation and economization of the institution of higher education. In the second part, the research sheds light on the interaction between the male scholar and the female sex.
The status and distribution of terrestrial amphibians in old-growth forests and managed stands
Creators: name: Dupuis, Linda A.
Publisher: name: University of British Columbia
Year: 2008

description: In this thesis, I compare the abundance of terrestrial amphibians in old-growth forests and young and mature post-harvest stands. I also examine the habitat features with which they are strongly associated, and contrast these between old growth and second growth to gain insight on the specific effects of logging operations. Terrestrial amphibian surveys were carried out by means of two techniques: 1) area-constrained searches (ACS), and 2)log surveys (LGS). ACS consisted of thoroughly searching a series of quadrats (3x3m in1991, 1x2 m in 1992), which were randomly placed within study sites. LGS involve detailed searches of logs in early, intermediate and advanced stages of decay. My study demonstrated that clearcut harvesting reduces terrestrial amphibian populations by as much as 70%. I suggest that the mechanism behind this pattern is a reduction in the availability of moist microhabitats. In support of this, salamander densities in managed stands were similar to those in old growth within 10 m. of streams. Moreover, managed stands lack large logs in intermediate and late stages of decomposition, and these are an important source of cover for salamanders, notably the western red-backed salamander, a. vehiculum. The proximity of old growth to managed stands may also be crucial. Second growth habitats which were isolated from old growth, maintained lower densities of terrestrial amphibians than second-growth stands adjacent to old growth. In light of my results, I make several recommendations to forest managers, which consider the needs of terrestrial amphibians.
Additional file 1: of A spatiotemporal meta-analysis of HIV/syphilis epidemic among men who have sex with men living in mainland China
Creators: name: Fu, Rong
name: Zhao, Jinkou
name: Wu, Dan
name: Zhang, Xiayan
name: Tucker, Joseph
name: Zhang, Meiwen
name: Tang, Weiming
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Flow chart showing the meta-analysis studies selection. The flow chart presents the process of studies searching, screening, and assessment. (PDF 113 kb)
Qualitative analysis of concurrent mean-payoff games
Creators: name: Chatterjee, Krishnendu
name: Ibsen-Jensen, Rasmus
Publisher: name: IST Austria
Year: 2013
Subjects: 000 Computer science, knowledge & general works

description: We consider concurrent games played by two-players on a finite state graph, where in every round the players simultaneously choose a move, and the current state along with the joint moves determine the successor state. We study the most fundamental objective for concurrent games, namely, mean-payoff or limit-average objective, where a reward is associated to every transition, and the goal of player 1 is to maximize the long-run average of the rewards, and the objective of player 2 is strictly the opposite (i.e., the games are zero-sum). The path constraint for player 1 could be qualitative, i.e., the mean-payoff is the maximal reward, or arbitrarily close to it; or quantitative, i.e., a given threshold between the minimal and maximal reward. We consider the computation of the almost-sure (resp. positive) winning sets, where player 1 can ensure that the path constraint is satisfied with probability 1 (resp. positive probability). Almost-sure winning with qualitative constraint exactly corresponds to the question whether there exists a strategy to ensure that the payoff is the maximal reward of the game. Our main results for qualitative path constraints are as follows: (1) we establish qualitative determinacy results that show for every state either player 1 has a strategy to ensure almost-sure (resp. positive) winning against all player-2 strategies or player 2 has a spoiling strategy to falsify almost-sure (resp. positive) winning against all player-1 strategies; (2) we present optimal strategy complexity results that precisely characterize the classes of strategies required for almost-sure and positive winning for both players; and (3) we present quadratic time algorithms to compute the almost-sure and the positive winning sets, matching the best known bound of the algorithms for much simpler problems (such as reachability objectives). For quantitative constraints we show that a polynomial time solution for the almost-sure or the positive winning set would imply a solution to a long-standing open problem (of solving the value problem of mean-payoff games) that is not known to be in polynomial time.
The Fourier Singular Complement Method for the Poisson problem. Part II: axisymmetric domains
Creators: name: Ciarlet, Patrick
name: Jung, Beate
name: Kaddouri, Samir
name: Labrunie, Simon
name: Zou, Jun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 65N30, 35L15

description: This paper is the second part of a threefold article, aimed at solving numerically the Poisson problem in three-dimensional prismatic or axisymmetric domains. In the first part of this series, the Fourier Singular Complement Method was introduced and analysed, in prismatic domains. In this second part, the FSCM is studied in axisymmetric domains with conical vertices, whereas, in the third part, implementation issues, numerical tests and comparisons with other methods are carried out. The method is based on a Fourier expansion in the direction parallel to the reentrant edges of the domain, and on an improved variant of the Singular Complement Method in the 2D section perpendicular to those edges. Neither refinements near the reentrant edges or vertices of the domain, nor cut-off functions are required in the computations to achieve an optimal convergence order in terms of the mesh size and the number of Fourier modes used.
Edge based stochastic block model statistical inference
Creators: name: Duvivier, Louis
name: Cazabet, Rémy
name: Robardet, Céline
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Community detection in graphs often relies on ad hoc algorithms with no clear specification about the node partition they define as the best, which leads to uninterpretable communities. Stochastic block models (SBM) offer a framework to rigorously define communities, and to detect them using statistical inference method to distinguish structure from random fluctuations. In this paper, we introduce an alternative definition of SBM based on edge sampling. We derive from this definition a quality function to statistically infer the node partition used to generate a given graph. We then test it on synthetic graphs, and on the zachary karate club network.
Effects of mixing and stirring on the critical behavior
Creators: name: Antonov, N. V.
name: Hnatich, M.
name: Honkonen, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Stochastic dynamics of a nonconserved scalar order parameter near its critical point, subject to random stirring and mixing, is studied using the field theoretic renormalization group. The stirring and mixing are modelled by a random external Gaussian noise with the correlation function $\proptoδ(t-t') k^{4-d-y}$ and the divergence-free (due to incompressibility) velocity field, governed by the stochastic Navier--Stokes equation with a random Gaussian force with the correlation function $\proptoδ(t-t') k^{4-d-y'}$. Depending on the relations between the exponents $y$ and $y'$ and the space dimensionality $d$, the model reveals several types of scaling regimes. Some of them are well known (model A of equilibrium critical dynamics and linear passive scalar field advected by a random turbulent flow), but there are three new nonequilibrium regimes (universality classes) associated with new nontrivial fixed points of the renormalization group equations. The corresponding critical dimensions are calculated in the two-loop approximation (second order of the triple expansion in $y$, $y'$ and $ε=4-d$).
description: 25 pages, 2 figures
New Hsiung-Minkowski identities
Creators: name: Albuquerque, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C21, 53C25, 53C65 (Primary) 53C17, 53C42, 57R25, 58A15 (Secondary)

description: We find the first three most general Minkowski or Hsiung-Minkowski identities relating the total mean curvatures $H_i$, of degrees $i=1,2,3$, of a closed hypersurface $N$ immersed in a given orientable Riemannian manifold $M$ endowed with any given vector field $P$. Then we specialise the three identities to the case when $P$ is a position vector field. We further obtain that the classical Minkowski identity is natural to all Riemannian manifolds and, moreover, that a corresponding 1st degree Hsiung-Minkowski identity holds true for all Einstein manifolds. We apply the result to hypersurfaces with constant $H_1,H_2$.
description: Accepted for publication in the Journal of Geometric Analysis
A note on the asymptotic distribution of the minimum density power divergence estimator
Creators: name: Juárez, Sergio F.
name: Schucany, William R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F35 (Primary) 62G35 (Secondary)

description: We establish consistency and asymptotic normality of the minimum density power divergence estimator under regularity conditions different from those originally provided by Basu et al.
description: Published at http://dx.doi.org/10.1214/074921706000000545 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Quantifying necessary quantum resources for nonlocality
Creators: name: Tendick, Lucas
name: Kampermann, Hermann
name: Bruß, Dagmar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlocality is one of the most important resources for quantum information protocols. The observation of nonlocal correlations in a Bell experiment is the result of appropriately chosen measurements and quantum states. We quantify the minimal purity to achieve a certain Bell value for any Bell operator. Since purity is the most fundamental resource of a quantum state, this enables us also to quantify the necessary coherence, discord, and entanglement for a given violation of two-qubit correlation inequalities. Our results shine new light on the CHSH inequality by showing that for a fixed Bell violation an increase in the measurement resources does not always lead to a decrease of the minimal state resources.
description: 13 pages, 5 figures
Asymptotic expansion at infinity of solutions of Monge-Ampère type equations
Creators: name: Liu, Zixiao
name: Bao, Jiguang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60, 35B40

description: We obtain a quantitative expansion at infinity of solutions for a kind of Monge-Ampère type equations that origin from mean curvature equations of Lagrangian graph $(x,Du(x))$ and refine the previous study on zero mean curvature equations and the Monge-Ampère equations.
High signal to noise absorption imaging of alkali atoms at moderate magnetic fields
Creators: name: Hans, Maurus
name: Schmutte, Finn
name: Viermann, Celia
name: Liebster, Nikolas
name: Sparn, Marius
name: Oberthaler, Markus K.
name: Strobel, Helmut
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present an improved scheme for absorption imaging of alkali atoms at moderate magnetic fields, where the excited state is well in the Paschen-Back regime but the ground state hyperfine manifold is not. It utilizes four atomic levels to obtain an approximately closed optical cycle. With the resulting absorption of the corresponding two laser frequencies we extract the atomic column density of a $^{39}$K Bose-Einstein condensate. The scheme can be readily applied to all other alkali-like species.
description: 4 pages, 4 figures
New descriptions of lattice SU(N) Yang-Mills theory towards quark confinement
Creators: name: Kondo, K. -I.
name: Shibata, A.
name: Shinohara, T.
name: Murakami, T.
name: Kato, S.
name: Ito, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We give new descriptions of lattice SU(N) Yang-Mills theory in terms of new lattice variables. The validity of such descriptions has already been demonstrated in the SU(2) Yang-Mills theory by our previous works from the viewpoint of defining and extracting topological degrees of freedom such as gauge-invariant magnetic monopoles and vortices which play the dominant role in quark confinement. In particular, we have found that the SU(3) lattice Yang-Mills theory has two possible options, maximal and minimal: The existence of the minimal option has been overlooked so far, while the maximal option reproduces the conventional SU(3) Cho-Faddeev-Niemi-Shabanov decomposition in the naive continuum limit. The new description gives an important framework for understanding the mechanism of quark confinement based on the dual superconductivity.
description: Cover+18 pages, 1 figure; version to appear in Phys. Lett. B
Detecting driver’s fatigue from EEG with deep learning techniques
Creators: name: Κύρου, Μαρία Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εγκεφαλογράφημα
Ανίχνευση κόπωσης
Βαθιά μάθηση
EEG
Fatigue detection
Deep learning

description: This study develops a neural processing methodology in order to detect drowsiness and fatigue during a sustained-attention driving task. The subjects participated in a visually monotonous and unexciting night-time drive and had to react in unexpected lane perturbations. The time of this reaction was employed to distinguish between drowsy and alert trials. EEG signals were preprocessed so as to achieve the elimination of artifacts. The methods applied to deal with artifacts included Artifact Subspace Reconstruction for large artifact removal, detection of bad sensors’ signals, JADE algorithm and wavelet denoising. Two approaches were implemented to classify EEG trials and both utilized the power spectral in three frequency bands, alpha, beta and theta. The difference between them lies in the fact that one of them takes advantage of electrodes’ locations so EEG’s spatial dimension is preserved. A deep learning algorithm, more specifically Convolutional Neural Networks (CNNs) used for the classification stage.
description: Η παρούσα εργασία αναπτύσσει μια μεθοδολογία επεξεργασίας εγκεφαλικών σημάτων προκειμένου να ανιχνεύσει υπνηλία και κόπωση κατά τη διάρκεια οδήγησης στην οποία απαιτείται εκτεταμένη προσοχή. Τα άτομα συμμετείχαν σε μια οπτικά μονότονη και ανιαρή νυχτερινή οδήγηση ενώ έπρεπε να αντιδράσουν σε απρόσμενες αλλαγές της λωρίδας που κινούνταν. Ο χρόνος αυτής της αντίδρασης χρησιμοποιήθηκε ώστε να γίνει η διάκριση μεταξύ καταστάσεων εγρήγορσης και κόπωσης των οδηγών. Τα EEG σήματα επεξεργάστηκαν με σκοπό να επιτευχθεί η εξάλειψη του θορύβου. Οι μέθοδοι που εφαρμόστηκαν για την αντιμετώπιση του θορύβου περιλάμβαναν συναρτήσεις όπως η Artifact Subspace Reconstruction, η αφαίρεση των μη χρήσιμων ηλεκτροδίων, τον αλγόριθμο JADE και wavelet denoising. Οι δύο προσεγγίσεις που εφαρμόστηκαν για την ταξινόμηση των EEG σημάτων αξιοποιούν το φάσμα ισχύος σε τρεις ζώνες συχνοτήτων, την άλφα, βήτα και θήτα. Η διαφορά μεταξύ τους έγκειται στο γεγονός ότι μια από αυτές εκμεταλλεύεται τις θέσεις των ηλεκτροδίων, προκειμένου να διατηρείται η χωρική διάσταση του εγκεφαλογραφήματος. Για την ταξινόμηση των σημάτων χρησιμοποιήθηκε ένας αλγόριθμος μηχανικής μάθησης, τα Συνελικτικά Νευρωνικά Δίκτυα.
The Arecibo Methanol Maser Galactic Plane Survey--I: Data
Creators: name: Pandian, Jagadheep D.
name: Goldsmith, Paul F.
name: Deshpande, Avinash A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an unbiased survey for 6.7 GHz methanol masers in the Galactic plane carried out using the 305 m Arecibo radio telescope. A total of 18.2 square degrees was surveyed with uniform sampling at 35.2 deg < l < 53.7 deg, |b| < 0.41 deg. The large collecting area of Arecibo and the sensitive C-Band High receiver allowed the survey to be complete at the level of 0.27 Jy making this the most sensitive blind survey carried out to date. We detected a total of 86 sources, 48 of which are new detections. Most of the new detections have a peak flux density below 2 Jy. Many methanol masers are clustered, reflecting the formation of massive stars in clusters.
description: Accepted by ApJ