cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μελέτη του βασιδιομύκητα Ganoderma adspersum (Ganodermataceae)
Creators: name: Ραϊχάν, Χαφούζ Σαλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Γανόδερμα
Λανοστάνια
Εργοστερόλες
Ganoderma
Lanostanes
Ergosterols

description: Αρκετά από τα είδη του γένους Ganoderma spp. έχουν μελετηθεί εκτεταμένα, ως προς τους δευτερογενείς μεταβολίτες, τις βιολογικές ιδιότητες και την οικολογική τους σημασία. Στη παρούσα έρευνα, αξιολογήθηκαν οι βιολογικές δράσεις των διαφόρων εκχυλισμάτων του είδους Ganoderma adspersum και επιπλέον τα εκχυλίματα πετρελαϊκού αιθέρα, διχλωρομεθανίου, μεθανόλης και νερού αναλύθηκαν περαιτέρω ως προς τους δευτερογενείς μεταβολίτες τους. Μέχρι στιγμής έχουν απομονωθεί, με την χρήση χρωματογραφικών μεθόδων (C.C., HPLC) και ταυτοποιηθεί, με φασματοσκοπικούς μεθόδους (NMR), ουσίες των εξής κατηγοριών: α) Ακόρεστα λιπαρά οξέα: cis-Ολεϊκό οξύ (1), β) Στερόλες: Εργοστα-7,22-διεν-3-όνη (2), Εργοστα-7,22-διεν-3-όλη (3), γ) Τριτερπένια - Λανοστάνια: Απλανοξιδικό οξύ G (4), Απλανοξιδικό οξύ A (5), 3β,15α-διυδρόξυ-7α,8α-εποξυ-12,23-διοξο-5α-λανοστα-9(11),20E-διεν-26-ικό οξύ (6), 15α-υδροξυ-7α,8α-εποξυ-3,12,23-τριοξο-5α-λανοστα-9(11),20(E)-διενιο (7). Οι ουσίες (6) και (7) απομονώνονται και προσδιορίζονται για πρώτη φορά, ως φυσικά προϊόντα.
description: Most of the species of Ganoderma spp. have been studied extensively for their secondary metabolites, biological activities and ecological importance. In this study, biological activities of the extracts of Ganoderma adspersum have been evaluated, as well as the petroleum ether, dichloromethanolic, methanolic and water extracts were studied further for their secondary metabolites. So far, 7 substances have been isolated by chromatographic (C.C., HPLC) and spectroscopic methods (ΝΜR), which are classified in the following categories: a) Unsaturated fatty acids: cis-Oleic acid (1), b) Sterols: Ergosta-7,22-dien-3-one (2) and Ergosta-7,22-dien-3-ol (3), c) Trieterpenoids – Lanostanes: Applanoxidic acid G (4), Applanoxidic acid A (5), 3β,15α-dihydroxy-7α,8α,-epoxy-12,23-dioxo-5α-lanosta-9(11),20E-dien-26-oic acid (6) and 15α-hydroxy-7α,8α-epoxy-3,12,23-trioxo-5α-lanosta-9(11),20(E)-diene (7). The compounds (6) and (7) are isolated and identified for the first time, as natural products.
Planificación de un proyecto de telefonía digital con la metodología del PMI
Creators: name: Camargo Lominchar, Manuel
Publisher: name: Zenodo
Year: 2021
Subjects: pmi
pmp
gestión de proyectos
project management

description: Durante este proyecto, me voy a centrar en una plataforma de telefonía digital, comúnmente conocida como plataforma VoIP, proponiendo un modelo de negocio que tenga cierto carácter innovador analizando desde las diferentes áreas que propone el PMI (Project Management Institute), la viabilidad del proyecto y todos los aspectos que serán requeridos por el mismo.
 Veremos el alcance, los costes, un cronograma, los criterios de calidad, los recursos con los que debe contar el proyecto, la estructura interna de comunicaciones, las adquisiciones que se deben acometer, los riesgos y finalmente, la gestión de los stakeholders o posibles interesados que se detecten durante este proceso.
Une comparaison du français parlé des enfants en immersion et des enfants francophones: étude syntaxique de plusieurs aspects de la langue parlée, dont les ratés de la communication
Creators: name: Santen, Marcia-Ellen
Publisher: name: University of British Columbia
Year: 2009

description: Following a review of the literature on French immersion, this thesis considers the implications of the systematic transcription of oral texts for linguistic analysis. In transcribing a corpus of spoken French by children attending a French immersion school and a corpus of children from Quebec (both from tape recordings and included in the appendice), the transcription conventions proposed by the Groupe Aixois de Recherche en Syntaxe were applied. In chapter III, some of the most common deviations from the norm that occur in the French immersion corpus are discussed, and for the most part these aberrations reflect the results of previous error analyses done on second language learners. In chapters IV and V, a study of "slip-ups" is undertaken. Slip-ups are repetitions or self-corrections, referred to as "rates" in this thesis. They occur frequently both in the Francophone and French immersion corpus. The purpose of this study is to analyse the intrinsic structure of these hesitations (that were previously brushed off as un-grammatical) and to discover whether the repetitions or self-corrections produced by the French immersion speakers share characteristics with or differ from the slip-ups identified in the Francophone corpus. Whereas an enumeration of grammatical errors will almost always show that the French spoken by French immersion pupils is not as "good" as that spoken by Francophone children, the analysis of slip-ups is a more objective endeavor. And indeed, the study reveals some unpredicted results. On certain parts of the sentence, such as the predicate, French native speakers surprisingly slip up more often than French immersion children, while the latter tend to hesitate more often on subjects and indirect objects. Further analysis reveals that native French speakers almost always repeat (or correct) entire word groups, or syntagms, although they don't always complete such groups. The French immersion children, on the other hand, do not always repeat the entire word group when they slip up, but they do seem to finish their construction (or sentence), once it has started. Finally, the situation (formal or informal) appeared to only affect the speakers in the Francophone corpus: they hesitated slightly more often in a formal setting, whereas the situation did not seem to affect the results for the French immersion speakers.
Editorial
Creators: name: Wrede, Birgitta
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
A Spitzer Spectrum of the Exoplanet HD 189733b
Creators: name: Grillmair, C. J.
name: Charbonneau, D.
name: Burrows, A.
name: Armus, L.
name: Stauffer, J.
name: Meadows, V.
name: van Cleve, J.
name: Levine, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the measurement of the 7.5-14.7 micron spectrum for the transiting extrasolar giant planet HD 189733b using the Infrared Spectrograph on the Spitzer Space Telescope. Though the observations comprise only 12 hours of telescope time, the continuum is well measured and has a flux ranging from 0.6 mJy to 1.8 mJy over the wavelength range, or 0.49 +/- 0.02% of the flux of the parent star. The variation in the measured fractional flux is very nearly flat over the entire wavelength range and shows no indication of significant absorption by water or methane, in contrast with the predictions of most atmospheric models. Models with strong day/night differences appear to be disfavored by the data, suggesting that heat redistribution to the night side of the planet is highly efficient.
description: 12 pages, 3 figures, accepted for publication in the Astrophysical Journal Letters
Composing and solving problems for a mathematical competition
Creators: name: Harizanov, Stanislav
Publisher: name: Zenodo
Year: 2022
Subjects: math competitions

description: Harizanov_ISPAS_Module1_2021: "Composing and solving problems for a mathematical competition". In this talk, we explain the main techniques for composing math problems and provide useful advice for the students how to guess the author's motivation. Several examples are presented for both test problems and classical problems.
A Naussa... Traduzione delle epistole dell' archivio dell' Istituto Ioannis Pappafys, indirizzate a Naoussa.
Creators: name: Corvino, Michela Vincenzo
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μετάφραση
Παπάφειο
Νάουσα
Translation
Pappafys
Naoussa

description: Ο τίτλος αυτής της διπλωματικής εργασίας αναφέρεται αναμφίβολα στο θέμα της: την μετάφραση από την ελληνική στην ιταλική γλώσσα 30 επιστολών που προέρχονται από το ιστορικό αρχείο του Παπάφειου Ιδρύματος της Θεσσαλονίκης και που έχουν ως παραλήπτες τους πολίτες της Νάουσας ή που στη Νάουσα αναφέρονται. Οι επιστολές στάλθηκαν από τον Γεώργιο Α. Κύρτση σε συμπολίτες του στη Νάουσα, μικρή πόλη της Βόρειας Ελλάδας που ανήκει στο νομό Ημαθίας. Οι παραλήπτες είναι διάφοροι. Σε κάποιες περιπτώσεις πρόκειται για συγγενείς ή φίλους και σε άλλες για συνεταίρους. Ακόμη και το περιεχόμενό τους ποικίλει, κινείται μεταξύ του οικονομικού προϋπολογισμού των εταιρειών στις οποίες είναι συνέταιρος ο Κύρτσης και της ζήτησης κρασιού, μαλλιού ή άλλων αγαθών. Δε λείπουν και τα πιο προσωπικά θέματα. Προκειμένου η μετάφραση να ενταχθεί σε ένα πλαίσιο λιγότερο ανεξάρτητο και περισσότερο κατανοητό, θεωρήσαμε απαραίτητο να εντάξουμε μία σύντομη ανασκόπηση, η οποία να απεικονίζει την ιστορία της Νάουσας. Έπειτα, σκιαγραφήσαμε το προφίλ του Γεώργιου Α. Κύρτση και όπου ήταν δυνατό και αυτό των παραληπτών. Τέλος, εκθέσαμε τις δυσκολίες της μεταφραστικής διαδικασίας και τα συμπεράσματα.
description: The title of this dissertation unequivocally recalls its topic: the translation from Greek into Italian of 29 epistles from the historical archive of the Ioannis Pappafys Institute of Thessaloniki, which have as their recipient's citizens of Naoussa or which refer to Naoussa. The epistles were all sent by Georgios Kyrtsis to inhabitants of the city of Naoussa, a small town in the Imathia region of Northern Greece. The recipients are various some is about relatives or friends, even the subject is varied, ranging from the financial statements of the companies of which Kyrtsis is a member to requests for wine, or wool or other goods, to more personal themes. In order for the translation to be inserted into a less detached and more understandable context, a premise was deemed necessary to briefly illustrate the story of Naoussa. Also necessary is a rapid introduction of the figure of Georgios A. Kyrtsis, where possible we tried to outline the profile of the sender. Finally, the difficulties of the translation process were exposed and then the conclusions were drawn.
Eine Politik des Begehrens – Gleichberechtigung in der Geschichte
Creators: name: Degen, Barbara
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
Nomes dos peixes, história de uma visita aos tapirapé e xavante
Creators: name: Mỹky, Janaxi
name: Mỹky, Marikau
name: Rondon Amarante, Elizabeth
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: irn

description: 3 arquivos WAV. A faixa 2 precede cronologicamente a faixa 1 (Janaxi). A faixa 3 corresponde a Marikau. O intervalo de datas é aquele indicado para a Faixa 2 (25 de maio de 1991) e a Faixa 3. Digitalizado pela pesquisadora no Brasil.
Εκτίμηση της μεθυλίωσης του HPV16 με αλληλούχιση νέας γενιάς σε κολποτραχηλικά δείγματα αυτολήψης έναντι λήψης από επαγγελματία υγείας
Creators: name: Μουχταροπούλου, Ευαγγελία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μεθυλίωση
Ιός των ανθρωπίνων θηλωμάτων, τύπος 16 (HPV16)
Αλληλούχιση Νέας Γενιάς (NGS)
Methylation
Human papilloma virus, type 16 (HPV16)
Next-Generation Sequencing (NGS)

description: Στην παρούσα εργασία, μελετήθηκε ο επιγενετικός μηχανισμός της μεθυλίωσης του HPV16 μέσω της τεχνολογίας αλληλούχισης νέας γενιάς (NGS) στα όψιμα γονίδια του καψιδίου του ιού L1 και L2. Η μελέτη πραγματοποιήθηκε σε 23 κλινικά τραχηλικά και 23 κολπικά δείγματα των ίδιων γυναικών, με χαμηλό και υψηλό βαθμό δυσπλασίας, τα οποία ταξινομήθηκαν σε δύο κατηγορίες, χαμηλού (NILM-CIN1) και υψηλού (CIN2-ICC) βαθμού αλλοιώσεις. Όλα τα δείγματα DNA τροποποιήθηκαν χημικά υπό την επίδραση όξινου θειώδους νατρίου. Ο ποσοτικός προσδιορισμός της μεθυλίωσης μετρήθηκε χρησιμοποιώντας μια σειρά από εργαλεία βιοπληροφορικής ανάλυσης.
description: In the present study, we studied the epigenetic mechanism of HPV16 methylation status through Next Generation Sequencing (NGS) technology in the late genes of the L1 and L2 virus capsid. The study was conducted in 23 clinical cervical and 23 vaginal samples of the same women with low and high-grade lesions, classified into two categories, low (NILM-CIN1) and high-grade (CIN2-ICC) lesions. All DNA samples were bisulfite-treated. The methylation status was quantified using a validated bioinformatics pipeline.
Geschlechteraspekte der Wirtschaftskrise – Einblicke in feministische Analysen aktueller Debatten
Creators: name: Wrede, Birgitta
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
Gender Studies angewandt! – Mit Genderkompetenz in die Berufspraxis. Ein Rückblick auf den Praxistag
Creators: name: Banihaschemi, Susan
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
POLARIX: a small mission of x-ray polarimetry
Creators: name: Costa, Enrico
name: Bellazzini, Ronaldo
name: Soffitta, Paolo
name: Muleri, Fabio
name: Feroci, Marco
name: Frutti, Massimo
name: Mastropietro, Marcello
name: Pacciani, Luigi
name: Rubini, Alda
name: Morelli, Ennio
name: Baldini, Luca
name: Bitti, Francesco
name: Brez, Alessandro
name: Cavalca, Francesco
name: Latronico, Luca
name: Massai, Marco Maria
name: Omodei, Nicola
name: Pinchera, Michele
name: Sgro', Carmelo
name: Spandre, Gloria
name: Matt, Giorgio
name: Perola, Giuseppe Cesare
name: Chincarini, Guido
name: Citterio, Oberto
name: Tagliaferri, Gianpiero
name: Pareschi, Giovanni
name: Cotroneo, Vincenzo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: X-Ray Polarimetry can be now performed by using a Micro Pattern Gas Chamber in the focus of a telescope. It requires large area optics for most important scientific targets. But since the technique is additive a dedicated mission with a cluster of small telescopes can perform many important measurements and bridge the 40 year gap between OSO-8 data and future big telescopes such as XEUS. POLARIX has been conceived as such a pathfinder. It is a Small Satellite based on the optics of JET-X. Two telescopes are available in flight configuration and three more can be easily produced starting from the available superpolished mandrels. We show the capabilities of such a cluster of telescopes each equipped with a focal plane photoelectric polarimeter and discuss a few alternative solutions.
description: 9 pages, 5 figures
Gender-Gastprofessur in der Fakultät für Rechtswissenschaften
Creators: name: Harzer, Regina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
Mentoring-Programm movement: eine Zwischenbilanz
Creators: name: Ogawa-Müller, Yulika
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
Αστυνομική Ηθική: ορισμός και βασικά ζητήματα
Creators: name: Λουκάς, Φώτιος Ευάγγελου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αστυνομική ηθική
Διαφθορά
Άσκηση βίας
Police ethics
Corruption
Use of force

description: Στην παρούσα Διπλωματική εργασία αναλύεται η έννοια της Αστυνομικής Ηθικής καθώς και συγκεκριμένα ηθικά αστυνομικά ζητήματα. Η Αστυνομική Ηθική είναι μια επαγγελματικού τύπου ηθική, η οποία ασχολείται με την ηθική ανάλυση και αξιολόγηση του αστυνομικού επαγγέλματος. Συγκεκριμένα, ένα σημαντικό αντικείμενο διερεύνησης της Αστυνομικής Ηθικής αποτελούν τα ζητήματα οργάνωσης, διαχείρισης και αξιολόγησης του αστυνομικού επαγγέλματος, όπως ο ρόλος της Αστυνομίας, ο επαγγελματισμός, τα ζητήματα λήψης αποφάσεων και η ανάληψη ευθυνών. Ένα δεύτερο αντικείμενο διερεύνησης αποτελούν τα ζητήματα που σχετίζονται με συγκεκριμένες εκφάνσεις του αστυνομικού έργου όπως τα ζητήματα διαφθοράς, εξαπάτησης καθώς και εκείνα που σχετίζονται με την άσκηση βίας στην Αστυνομία. Στην κατηγορία της διαφθοράς στην Αστυνομία αναλύονται ηθικά ζητήματα, όπως η ηθική αξιολόγηση των φιλοδωρημάτων καθώς και το ζήτημα της ‘’Καλοπροαίρετης διαφθοράς’’. Στην κατηγορία της εξαπάτησης, αναλύονται ηθικά οι τακτικές ψευδολογίας και εξαπάτησης που χρησιμοποιούν οι αστυνομικοί, όπως η ψευδολογία και εξαπάτηση κατά τη διάρκεια των αστυνομικών ερευνών, των ανακρίσεων και των μαρτυρικών καταθέσεων. Τέλος, στην κατηγορία της άσκησης βίας, αναλύονται ηθικά δύο τύποι αστυνομικής βίας, η άσκηση μετριοπαθούς και η άσκηση θανατηφόρας βίας
description: This Thesis analyzes the concept of Police Ethics as well as specific ethical issues in policing. Police Ethics is a professional ethics that deals with the ethical analysis and evaluation of the police profession. In particular, important subjects of analyzing Police Ethics are the issues of organizing, managing and evaluating the police profession, such as police role, professionalism, decision-making and accountability. A second object of investigation is the issues related to specific aspects of police work, such as corruption, deception and those related to the use of force in the Police. In the category of corruption in the Police are analyzed ethical issues, such as the moral assessment of gratuities as well as the issue of ‘’Corruption of Noble Cause’’. In the category of deception, are analyzed ethical issues such as falsehood and deception tactics used by police officers during police investigations, interrogations and witness testimonies. Finally, in the category of use of force, two types of force, the moderate and the fatal, are ethically analyzed
Frauen und Technik!
Creators: name: Schmidt-Lentzen, Veronika
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2012

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 2 (2012)
Basic Concepts for a Fundamental Aether Theory
Creators: name: Levy, Joseph
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the light of recent experimental and theoretical data, we go back to the studies tackled in previous publications [1] and develop some of their consequences. Some of their main aspects will be studied in further detail. Yet this text remains self- sufficient. The questions asked following these studies will be answered. The consistency of these developments in addition to the experimental results, enable to strongly support the existence of a preferred aether frame and of the anisotropy of the one-way speed of light in the Earth frame. The theory demonstrates that the apparent invariance of the speed of light results from the systematic measurement distortions entailed by length contraction, clock retardation and the synchronization procedures with light signals or by slow clock transport. Contrary to what is often believed, these two methods have been demonstrated to be equivalent by several authors [1]. The compatibility of the relativity principle with the existence of a preferred aether frame and with mass-energy conservation is discussed and the relation existing between the aether and inertial mass is investigated. The experimental space-time transformations connect co-ordinates altered by the systematic measurement distortions. Once these distortions are corrected, the hidden variables they conceal are disclosed. The theory sheds light on several points of physics which had not found a satisfactory explanation before. (Further important comments will be made in ref [1d]).
description: PDF, 55 Pages, 8 Figures. This version is supplemented by developments which further explain the conclusions drawn in the previous version. The paper refers to a complementary article entitled "Aether theory and the principle of relativity" ref[1d], physics/0607067
Metallic ferromagnetism in the Hubbard model: A rigorous example
Creators: name: Tanaka, Akinori
name: Tasaki, Hal
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present the first rigorous example of the Hubbard model in any dimensions which exhibits metallic ferromagnetism. The model is a genuine Hubbard model with short-range hopping and on-site Coulomb repulsion, and has multi single-electron bands. In the limit where the band gap and the Coulomb repulsion become infinite, we prove that the ground states are completely ferromagnetic and at the same time conducting.
description: 4 pages, 2 figues. Minor improvements have been made. This version will appear in Phys. Rev. Lett
Additional file 1 of Association among pre-pregnancy body mass index, gestational weight gain and neonatal birth weight: a prospective cohort study in China
Creators: name: Wang, Yawen
name: Ma, Haihui
name: Feng, Yahui
name: Zhan, Yongle
name: Wu, Sansan
name: Cai, Shuya
name: Shi, Yingjie
name: Chen, Yunli
name: Ma, Liangkun
name: Jiang, Yu
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Twenty-four hospitals sites in the CPWCS project; Table S2. Maternal characteristics presented by pre-pregnancy BMI; Table S3. Maternal characteristics presented by GWG; Table S4. Maternal characteristics presented by GWGrate; Table S5. Birth weight classified by pre-pregnancy BMI, GWG and GWGrate; Table S6. Birth weight classified by jointed pre-pregnancy BMI and GWG; Table S7. Birth weight classified by jointed pre-pregnancy BMI and GWGrate. (DOCX 53 kb)
Generating Ekpyrotic Curvature Perturbations Before the Big Bang
Creators: name: Lehners, Jean-Luc
name: McFadden, Paul
name: Turok, Neil
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze a general mechanism for producing a nearly scale-invariant spectrum of cosmological curvature perturbations during a contracting phase preceding a big bang, that can be entirely described using 4d effective field theory. The mechanism, based on first producing entropic perturbations and then converting them to curvature perturbations, can be naturally incorporated in cyclic and ekpyrotic models in which the big bang is modelled as a brane collision, as well as other types of cosmological models with a pre-big bang phase. We show that the correct perturbation amplitude can be obtained and that the scalar spectral tilt n tends to range from slightly blue to red, with 0.97 < n < 1.02 for the simplest models, a range compatible with current observations but shifted by a few per cent towards the blue compared to the prediction of the simplest, large-field inflationary models.
description: 21 pages, no figures
The effects of seed-storage lipid emulsion sprays on the interactions between plants and their fungal pathogens
Creators: name: Young, Roderick James
Publisher: name: University of British Columbia
Year: 2009

description: Emulsions of the seed-storage lipids jojoba wax and canola oil were tested for phytoprotective activity against two powdery mildews and two rot-causing fungi, and for phytotoxicity on two host plants, grape ( Vitis vinifera) and cucumber (Cucumis sativus). Against the powdery mildews tested (Erysiphe cichoracearum and Uncinula necato,), greenhouse cucumber plants and field grape plants treated with jojoba wax emulsions showed 75-100% reductions in powdery mildew disease severity, as compared to water sprayed plants. The canola oil emulsion reduced cucumber powdery mildew disease severity by 63-69%. Scanning electron microscope analyses of E. cichoracearum conidia on cucumber leaves sprayed with the seed-storage lipid emulsions showed normal germination structures with inhibited appressorium formation. The jojoba wax emulsions did have slight phytotoxic effects observable on both the cucumber and grape plants, especially during periods of higher temperature. However, these effects were not observed to reduce the yield or survival of the grape plants sprayed in field trials. Jojoba wax and canola oil emulsions did not seem to have an effect against the infection processes of rot-causing fungi (Botrytis cinerea and Didymelia bryoniae). Instead, the lack of differences between the growth of B. cinerea colonies on potato dextrose agar (PDA) treated with the seed-storage lipid emulsions or the emulsifying surfactant Triton X-100 alone indicated that the presence of the surfactant was correlated with reduced colony growth. Colony growth on Triton X-1 00-treated PDA was reduced by 87-92% as compared to the water control-treated PDA. In addition, field grape plants treated with emulsions containing Triton X-1 00 showed a 68-87% reduction in B. cinerea-caused disease incidence. While similar reductions in D. bryoniae growth were observed in vitro for PDA treated with emulsions containing Triton X-100, the surtactant or the lipid emulsions did not reduce D. bryoniae-caused disease incidence in the in vivo trials on greenhouse cucumbers plants. Applied treatments may have been washed away by exuding sap.
Additional file 3 of Electronic informed consent criteria for research ethics review: a scoping review
Creators: name: Yusof, Mohd Yusmiaidil Putera Mohd
name: Teo, Chin Hai
name: Ng, Chirk Jenn
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Science Policy

description: Additional file 3. Data Collection Table.
Distances to Anomalous X-ray Pulsars using Red Clump Stars
Creators: name: Durant, Martin
name: van Kerkwijk, Marten H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We identify `red clump stars' - core helium-burning giants - among 2MASS stars and use them to measure the run of reddening with distance in the direction of each of the Galactic Anomalous X-ray Pulsars (AXP). We combine this with extinction estimates from X-ray spectroscopy to infer distances and find that the locations of all AXP are consistent with being in Galactic spiral arms. We also find that the 2-10 keV luminosities implied by our distances are remarkably similar for all AXPs, being all around 1.3e35 erg s-1. Furthermore, using our distances to estimate effective black-body emitting radii, we find that the radii are tightly anti-correlated with pulsed fraction, and somewhat less tightly anti-correlated with black-body temperature. We find no obvious relationship of any property with the dipole magnetic field strength inferred from the spin-down rate.
description: 38 pages aastex, 10 figures. Accepted for publication in ApJ
Two-body problem in a multiband lattice and the role of quantum geometry
Creators: name: Iskin, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider the two-body problem in a periodic potential, and study the bound-state dispersion of a spin-$\uparrow$ fermion that is interacting with a spin-$\downarrow$ fermion through a short-range attractive interaction. Based on a variational approach, we obtain the exact solution of the dispersion in the form of a set of self-consistency equations, and apply it to tight-binding Hamiltonians with onsite interactions. We pay special attention to the bipartite lattices with a two-point basis that exhibit time-reversal symmetry, and show that the lowest-energy bound states disperse quadratically with momentum, whose effective-mass tensor is partially controlled by the quantum metric tensor of the underlying Bloch states. In particular, we apply our theory to the Mielke checkerboard lattice, and study the special role played by the interband processes in producing a finite effective mass for the bound states in a non-isolated flat band.
description: 6 pages with 2 figures; to appear in PRA
Cantos
Creators: name: Mỹky, Japaatau
name: Mỹky, Wajakuxi
name: Rondon Amarante, Elizabeth
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: irn

description: 2 arquivos WAV. Digitalizado pela pesquisadora no Brasil.
Schröder und Merkel im SPIEGEL
Creators: name: Weber, Lena
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Sample Selection Bias in Evaluation of Prediction Performance of Causal Models
Creators: name: Long, James P.
name: Ha, Min Jin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Causal models are notoriously difficult to validate because they make untestable assumptions regarding confounding. New scientific experiments offer the possibility of evaluating causal models using prediction performance. Prediction performance measures are typically robust to violations in causal assumptions. However, prediction performance does depend on the selection of training and test sets. Biased training sets can lead to optimistic assessments of model performance. In this work, we revisit the prediction performance of several recently proposed causal models tested on a genetic perturbation data set of Kemmeren. We find that sample selection bias is likely a key driver of model performance. We propose using a less-biased evaluation set for assessing prediction performance and compare models on this new set. In this setting, the causal models have similar or worse performance compared to standard association-based estimators such as Lasso. Finally, we compare the performance of causal estimators in simulation studies that reproduce the Kemmeren structure of genetic knockout experiments but without any sample selection bias. These results provide an improved understanding of the performance of several causal models and offer guidance on how future studies should use Kemmeren.
description: 12 pages, 4 figures, 2 tables
Nachruf: Doris Janshen (1946–2009)
Creators: name: Wrede, Birgitte
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Privacy Amplification, Private States, and the Uncertainty Principle
Creators: name: Renes, Joseph M.
name: Boileau, Jean-Christian
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that three principle means of treating privacy amplification in quantum key distribution, private state distillation, classical privacy amplification, and via the uncertainty principle, are equivalent and interchangeable. By adapting the security proof based on the uncertainty principle, we construct a new protocol for private state distillation which we prove is identical to standard classical privacy amplification. Underlying this approach is a new characterization of private states, related to their standard formulation by the uncertainty principle, which gives a more physical understanding of security in quantum key distribution.
Optical lattice for tripod-like atomic level structure
Creators: name: Kubala, Piotr
name: Zakrzewski, Jakub
name: Łącki, Mateusz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Standard optical potentials use off-resonant laser standing wave induced AC-Stark shift. In a recent development [Phys. Rev. Lett. {\bf 117}, 233001 (2016)] a three-level scheme in $Λ$ configuration coupled coherently by resonant laser fields was introduced leading to an effective lattice with subwavelength potential peaks. Here as an extension of that work to a four level atomic setup in the tripod configuration is used to create spin $1/2$-like two-dimensional dark-space with 1D motion and the presence of external gauge fields. Most interestingly for a possible application, the lifetime for a dark subspace motion is up to two orders of magnitude larger than for a similar $Λ$ system. The model is quite flexible leading to lattices with significant nearest, next-nearest, or next-next-nearest hopping rates, $J_1,J_2,J_3$ opening up new intriguing possibilities to study, e.g. frustrated systems. The characteristic Wannier functions lead also to new type of inter-site interactions not realizable in typical optical lattices.
description: 13 pages, 9 figures, version accepted for publication
title: Pastoral commons as areas of conservation : the case of Taita hills in South East of Kenya
Creators: name: Mwamidi, Daniel
name: Dominguez, Pablo
Publisher: name: UMR 5602 CNRS/UT2J GEODE Géographie De l'Environnement 5 All. A. Machado 31058 Toulouse France
Year: 2019
Subjects: subject: FOS: Humanities
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Our study, contrary to what the literature seems to suggest up to present, confirms the important presence of pastoral commons in Kenya through a fine grain ethnographic verification of their existence in two very separated areas of the country, at the same time as our knowledge of their presence in many other sites of Kenya.
description: Pastoral commons, conservation, Kenya
Chance-Constrained Active Inference
Creators: name: van de Laar, Thijs
name: Senoz, Ismail
name: Özçelikkale, Ayça
name: Wymeersch, Henk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Active Inference (ActInf) is an emerging theory that explains perception and action in biological agents, in terms of minimizing a free energy bound on Bayesian surprise. Goal-directed behavior is elicited by introducing prior beliefs on the underlying generative model. In contrast to prior beliefs, which constrain all realizations of a random variable, we propose an alternative approach through chance constraints, which allow for a (typically small) probability of constraint violation, and demonstrate how such constraints can be used as intrinsic drivers for goal-directed behavior in ActInf. We illustrate how chance-constrained ActInf weights all imposed (prior) constraints on the generative model, allowing e.g., for a trade-off between robust control and empirical chance constraint violation. Secondly, we interpret the proposed solution within a message passing framework. Interestingly, the message passing interpretation is not only relevant to the context of ActInf, but also provides a general purpose approach that can account for chance constraints on graphical models. The chance constraint message updates can then be readily combined with other pre-derived message update rules, without the need for custom derivations. The proposed chance-constrained message passing framework thus accelerates the search for workable models in general, and can be used to complement message-passing formulations on generative neural models.
Investigation of some nonlinear problems in mechanics
Creators: name: Wang, Wei
Publisher: name: No Publisher Supplied
Year: 2021

description: We investigate some nonlinear problems in mechanics, which include the dynamic problem with nonlinear interaction, the optimal design of multi-phase conductive compos- ite, and the phase transition of lattice structures governed by non-convex energy functions.The first nonlinear problem we investigate is the dynamics of a two-dimensional lattice with harmonic, weakly nonlinear, and strongly nonlinear interactions. Assuming nearest neighbor interaction, we derive the continuum approximation of the discrete system in the long wavelength regime while keeping the Hamiltonian structure of the system. For a hexagonal lattice with nontrivial shear resistance, we surprisingly find that solitary wave solutions exist in certain directions related to the underlying symmetries of the lattice. The properties of the solitary waves are also studied by numerical simulations of the original discrete system. Besides being of fundamental scientific interest, the solitary wave solutions in nonlinear hexagonal lattices are anticipated to have applications in the design of shock absorbers, acoustic lens, non-destructive structural testing devices among many others.Secondly, the optimal design of multiphase conductive composites by estimating Hashin- Shtrikman bounds (HS bounds) attainability in the constraint of volume fractions of the constituent phases. We derive the necessary condition by null lagrangian and maximum principle. We address the sufficient condition of the HS bounds attainability by proposing a new class of coated sphere comprised of three-phase and four-phase isotropic conductive materials, and generalize the coated spheres to a larger number phases. Combining the necessary and sufficient condition of HS bounds attainability, we are able to precisely characterize the G-closure and effective properties of multiphase conductive materials for a broader range.Lastly, we design and characterize a two-dimensional (2D) crystal formed by a lattice structure, which consists of repeating structure elements as called unit cell. Based on the minimization of total free energy of the unit cell, we find three stable phases coexist at the critical loading which turns out naturally result in the microstructure. The microstructure of the lattice structure may easily buckle while the macrostructure of the lattice structure is in compression, the properties of the lattice structure are also studied by numerical simulations in 2D biaxial stress system. Such lattice structures can undergo “phase transitions” mimicking the Austenite-Martensite phase transition in shape memory alloys (SMAs). More importantly, they offer directly observable material models that can shed light on the fundamental mechanisms of the first-order non-diffusive phase transitions and shape memory effects, their interactions with defects, and the physical origins of hysteresis.
Rezension / Babara Degen: Justitia ist eine Frau – Geschichte und Symbolik der Gerechtigkeit
Creators: name: Glindemann, Kathrin
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Rezension / Annemarie Bauer; Katharina Gröning (Hrsg.): Gerechtigkeit, Geschlecht und demographischer Wandel
Creators: name: Harzer, Regina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Rezension / Kathrin Arioli et al. (Hrsg.): Wandel der Geschlechterverhältnisse durch Recht?
Creators: name: Kirchhoff, Mechthild
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Effective narrow ladder model for two quantum wires on a semiconducting substrate
Creators: name: Abdelwahab, Anas
name: Jeckelmann, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a theoretical study of two spinless fermion wires coupled to a three dimensional semiconducting substrate. We develop a mapping of wires and substrate onto a system of two coupled two-dimensional ladder lattices using a block Lanczos algorithm. We then approximate the resulting system by narrow ladder models, which can be investigated using the density-matrix renormalization group method. In the absence of any direct wire-wire hopping we find that the substrate can mediate an effective wire-wire coupling so that the wires could form an effective two-leg ladder with a Mott charge-density-wave insulating ground state for arbitrarily small nearest-neighbor repulsion. In other cases the wires remain effectively uncoupled even for strong wire-substrate hybridizations leading to the possible stabilization of the Luttinger liquid phase at finite nearest-neighbor repulsion as found previously for single wires on substrates. These investigations show that it may be difficult to determine under which conditions the physics of correlated one-dimensional electrons can be realized in arrays of atomic wires on semiconducting substrates because they seem to depend on the model (and consequently material) particulars.
Mean-field approximations for the restricted solid-on-solid growth models
Creators: name: Barato, A. C.
name: de Oliveira, M. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study models for surface growth with a wetting and a roughening transition using simple and pair mean-field approximations. The simple mean-field equations are solved exactly and they predict the roughening transition and the correct growth exponents in a region of the phase diagram. The pair mean-field equations, which are solved numerically, show a better accordance with numerical simulation and correctly predicts a growing interface with constant velocity at the moving phase. Also, when detailed balance is fulfilled, the pair mean field becomes the exact solution of the model.
description: 15 pages, 7 figures
Conflict between some higher-order curvature invariant terms
Creators: name: Saha, Dalia
name: Alam, Mohosin
name: Mandal, Ranajit
name: Sanyal, Abhik Kumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A viable quantum theory does not allow curvature invariant terms of different higher orders to be accommodated in the gravitational action. We show that there is indeed a conflict between the curvature squared and Gauss-Bonnet squared terms from the point of view of hermiticity. This means one should choose either, in addition to the Einstein-Hilbert term, but never the two together. We explore early cosmic evolution with Gauss-Bonnet squared term.
description: 18 pages, 0 figures
História do guri sábio
Creators: name: Irawali, Alonso
name: Rondon Amarante, Elizabeth
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: irn

description: 2 arquivos WAV. Digitalizado pela pesquisadora no Brasil. O arquivo 2023-23.011.001.wav foi acelerado em até 1,20 vezes sua velocidade original para colocá-lo em um alinhamento impressionista com a qualidade da voz do mesmo falante em 2023-23.011.002.wav.
Bayesian Mechanics for Stationary Processes
Creators: name: Da Costa, Lancelot
name: Friston, Karl
name: Heins, Conor
name: Pavliotis, Grigorios A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: This paper develops a Bayesian mechanics for adaptive systems. Firstly, we model the interface between a system and its environment with a Markov blanket. This affords conditions under which states internal to the blanket encode information about external states. Second, we introduce dynamics and represent adaptive systems as Markov blankets at steady-state. This allows us to identify a wide class of systems whose internal states appear to infer external states, consistent with variational inference in Bayesian statistics and theoretical neuroscience. Finally, we partition the blanket into sensory and active states. It follows that active states can be seen as performing active inference and well-known forms of stochastic control (such as PID control), which are prominent formulations of adaptive behaviour in theoretical biology and engineering.
description: 18 pages, 11 figures
Higgs boson pair production process $e^+e^-\to ZHH$ in the littlest Higgs model at the ILC
Creators: name: Liu, Yao-Bei
name: Du, Lin-Lin
name: Wang, Xue-Lei
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The physics prospect at future linear $e^{+}e^{-}$ colliders for the study of the Higgs triple self-coupling via the process of $e^{+}e^{-}\to ZHH$ is investigated. In this paper, we calculate the contribution of the new particles predicted by the littlest Higgs model to the cross sections of this process in the future high energy $e^{+}e^{-}$ collider($ILC$). The results show that, in the favorable parameter spaces preferred by the electroweak precision, the deviation of the total cross sections from its $SM$ value varies from a few percent to tens percent, which may be detected at the future $ILC$ experiments with $\sqrt{s}$=500GeV.
description: 13 pages,4 figures
Rezension / Sabine Grenz et al. (Hrsg.): Gender Equality Programmes in Higher Education. International Perspectives
Creators: name: Mischau, Anina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Rezension / Alice Schwarzer (Hrsg.): Vom Kampf um das Frauenwahlrecht bis zur ersten Kanzlerin
Creators: name: Rouvray, Christina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)