cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ηθικά και νομικά ζητήματα στον ογκολογικό ασθενή
Creators: name: Παλιούρας, Δημήτριος Αθανάσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ογκολογικός ασθενής
Ευθανασία
Συναίνεση
Cancer
Euthanasia
Moral issues

description: Ο καρκίνος είναι η σημαντικότερη αιτία θανάτου στις ανεπτυγμένες και αναπτυσσόμενες χώρες, ενώ η αντιμετώπιση και η θεραπευτική του προσέγγιση μονοπωλεί σχεδόν ολόκληρη την ιατρική έρευνα και τα συστήματα υγείας των κρατών. Οι ογκολογικοί άρρωστοι είναι μία ιδιαίτερη ομάδα ασθενών με κύριο χαρακτηριστικό το γεγονός ότι πάσχουν από μία δυνητικά μη ιάσιμη νόσο. Μοιραία λοιπόν, ο ασθενής αλλά και ο ιατρός έρχονται αντιμέτωποι με ηθικά αλλά και νομικά ζητήματα όπως η διαδικασία της επαρκούς ενημέρωσης από τον ιατρό, η συμμετοχή του σε θεραπευτικά πρωτόκολλα, η επιλογή θεραπευτικών μέσων ή παρηγορικής φροντίδας, η χρήση υψηλού κόστους φαρμάκων και η διαδικασία της ευθανασίας. Τα παραπάνω ζητήματα χρήζουν επίλυσης και ερμηνείας με την βοήθεια επιστημών όπως η νομική, η ιατρική ,η φιλοσοφία και η θεολογία. Η σαφής οριοθέτηση και κατανόηση των παραπάνω ζητημάτων είναι προς όφελος των ασθενών, ενώ ισχυροποιεί την καλή σχέση ασθενούς-ιατρού, διευκολύνει την συνεργασία των επαγγελματιών υγείας και συμβάλλει στην ορθή και θεσμοθετημένη αντιμετώπιση της ασθένειας με ενιαίο τρόπο.
description: Cancer is the most important cause of death in developed and developing countries and its treatment and therapeutic approach almost uncovers most of the medical research and state health systems. Oncological patients are a group with particular characteristics, one of which is the fact that they are confronted with a potentially lethal disease. The patient and the doctor have to deal with moral and legal issues such as the process of being adequately informed by the doctor, taking part in therapeutic protocols, choosing therapies or palliative care, using high-cost medicines and the process of euthanasia. These issues need to be addressed and interpreted with the help of sciences such as law, medicine, philosophy and theology. Clear delimitation and understanding of the above issues works beneficial for the patients, strengthens good patient-doctor relationships, facilitates the work of health professionals and contributes to the appropriate and institutionalized treatment of the disease in a unified way.
Hinode/EIS coronal magnetic field measurements at the onset of a C2 flare
Creators: name: Landi, Enrico
name: Li, Wenxian
name: Brage, Tomas
name: Hutton, Roger
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the present work we study Hinode/EIS observations of an active region taken before, during and after a small C2.0 flare in order to monitor the evolution of the magnetic field evolution and its relation to the flare event. We find that while the flare left the active region itself unaltered, the event included a large Magnetic Field Enhancement (MFE), which consisted of a large increase of the magnetic field to strengths just short of 500~G in a rather small region where no magnetic field was measured before the flare. This MFE is observed during the impulsive phase of the flare at the footpoints of flare loops, its magnetic energy is sufficient to power the radiative losses of the entire flare, and has completely dissipated after the flare. We argue that the MFE might occur at the location of the reconnection event triggering the flare, and note that it formed within 22 minutes of the flare start (as given by the EIS raster return time). These results open the door to a new line of studies aimed at determining whether MFEs 1) can be flare precursor events, 2) can be used for Space Weather forecasts; and 3) what advance warning time they could allow; as well as to explore which physical processes lead to their formation and dissipation, whether such processes are the same in both long-duration and impulsive flares, and whether they can be predicted by theoretical models.
Expression of MHC II genes
Creators: name: Drozina, G.
name: Kohoutek, J.
name: Jabrane-Ferrat, N.
name: Peterlin, B. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Innate and adaptive immunity are connected via antigen processing and presentation (APP), which results in the presentation of antigenic peptides to T cells in the complex with the major histocompatibility (MHC) determinants. MHC class II (MHC II) determinants present antigens to CD4+ T cells, which are the main regulators of the immune response. Their genes are transcribed from compact promoters that form first the MHC II enhanceosome, which contains DNA-bound activators and then the MHC II transcriptosome with the addition of the class II transactivator (CIITA). CIITA is the master regulator of MHC II transcription. It is expressed constitutively in dendritic cells (DC) and mature B cells and is inducible in most other cell types. Three isoforms of CIITA exist, depending on cell type and inducing signals. CIITA is regulated at the levels of transcription and post-translational modifications, which are still not very clear. Inappropriate immune responses are found in several diseases, including cancer and autoimmunity. Since CIITA regulates the expression of MHC II genes, it is involved directly in the regulation of the immune response. The knowledge of CIITA will facilitate the manipulation of the immune response and might contribute to the treatment of these diseases.
Electronic supplementary material from Label-based expectations affect incentive contrast effects in bumblebees
Creators: name: Hemingway, Claire T.
name: Muth, Felicity
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Electronic supplementary material
Μουσείο και Αυτισμός
Creators: name: Παπασταματίου, Φανή Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αυτισμός
Μουσειακή Εκπαίδευση
Προσβασιμότητα
Autism
Museum Education
Accessibility

description: Σκοπός της διατριβής είναι η διερεύνηση της μουσειακής εκπαίδευσης για ΑμΕΑ και ειδικά για παιδιά που ανήκουν στο φάσμα του αυτισμού. Γίνεται μια βιβλιογραφική ανασκόπηση γύρω από την έννοια του Αυτισμού, του ρόλου του Μουσείου, της μουσειακής εκπαίδευσης στην Ελλάδα, θέτει ζητήματα προσβασιμότητας και μουσειακών πρακτικών για ΑμΕΑ. Επίσης επειδή υπάρχει ένα κενό στην ελληνική βιβλιογραφία σχετικά με στοχοθετημένα μουσειοπαιδαγωγικά προγράμματα για παιδιά που ανήκουν στο φάσμα του Αυτισμού, παραθέτουμε παραδείγματα από μουσεία του εξωτερικού ειδικά των Η.Π.Α. που τα προγράμματα τους έχουν χαρακτηριστεί επιτυχημένα με την ελπίδα να εφαρμοστούν και στα μουσεία της Ελλάδας. Μη ξεχνάμε ότι 1 στους 68 μαθητές στην Αμερική ανήκει στο φάσμα του Αυτισμού οπότε πρέπει να προετοιμάσουμε το έδαφος για αυτή την ευαίσθητη κοινωνικά ομάδα
description: The aim of this purpose thesis is to investigate the museum education for disabled people and especially for children in the autism spectrum. There is a bibliographic review regarding the concept of Autism, the role of the Museum, museum education in Greece, issues of accessibility and museum practices for people with disabilities. Moreover, we notice a gap in the Greek bibliography about museum educational programs for children belonging to the autism spectrum. We give examples of foreign museums, especially from museums of U.S.A. Their programs considered to be successful and helping, hoping the same for the museums in Greece as well. Do not forget that 1 in 68 students in America belong to the Autism spectrum so we have to prepare the ground for this sensitive social group
description: Σε συνεργασία με το Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Computation of nominal inflectional allomorphy in Albanian
Creators: name: Bardhollari, Kliti Anesti
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αλλομορφία
Υπολογιστική επεξεργασία
Αλβανικά
Allomorphy
Computation
Albanian

description: The present dissertation concentrates on delving into the inflectional allomorphy of Albanian nouns both theoretically and computationally. After it provides a theoretical framework accounting for the notion of allomorphy across the linguistic literature, it attempts to put in the foreground some theoretical observations in order to describe the allomorphic situation in the language. Due to a number of inconsistencies in the data, the dissertation suggests that the best way to explain this particular type of allomorphy is by stepping on morphophonology and lexically- and/or historically driven factors, as Albanian has been a language that has experienced a variety of language contacts with many European people. After this, the dissertation explains the corpus-based means, LINGUISTICA, by which it analyses the allomorphy and the suffixes appearing in the wide corpus used. As a major fact, the thesis underscores the fact that the definite form of Albanian nouns is computationally more successful in terms of LINGUISTICA being more effective in finding its inflectional suffixes rather its counterpart, the indefinite form. In the end, the dissertation entertains the idea of further multidisciplinary investigations on Albanian allomorphy.
description: Η παρούσα διπλωματική εξετάζει την κλιτική αλλομορφία των ουσιαστικών στην αλβανική σε θεωρητικό και υπολογιστικό επίπεδο. Περιγράφοντας το φαινόμενο της αλλομορφίας, όπως αυτό έχει παρουσιαστεί στη βιβλιογραφία, επιχειρείται η θεωρητικοποίηση του φαινομένου συγκεκριμένα στην αλβανική. Στην προσπάθεια αυτή παρατηρήθηκαν διάφορες ασυνέπειες στην ομαδοποίηση των δεδομένων και προτείνονται ως ιδανικότεροι τρόποι ανάλυσης η μορφοφωνολογία καθώς και άλλοι λεξικοϊστορικοί παράγοντες, βασιζόμενοι στο ότι η αλβανική σημειώνει αρκετές γλωσσικές επαφές με άλλες γλώσσες της Χερσονήσου του Αίμου και όχι μόνο. Έπειτα, η εργασία επικεντρώνεται στην παρατήρηση των δεδομένων μετά την επεξεργασία τους από το LINGUISTICA, ενός προγράμματος βασισμένο σε σώματα κειμένων που αναλύει τις ονοματικές καταλήξεις. Ως βασικό εύρημα της διπλωματικής παρατηρείται η επιτυχέστερη πρόβλεψη των καταλήξεων που περιγράφουν την οριστικότητα έναντι αυτών της αοριστότητας. Στο τέλος η εργασία προτείνει νέες πιθανές έρευνες για την αλβανική γλώσσα και αλλομορφία.
The Impact of Instructions on Survey Translation: An Experimental Study
Creators: name: Kleiner, Brian
name: Pan, Yuling
name: Bouic, Jerelyn
Publisher: name: European Survey Research Association
Year: 2009
Subjects: survey translation; equivalence; adaption; translation; instructions

description: The experimental study described in this paper examined the impact of providing special instructions and supporting material to translators. Specifically, it addressed whether Spanish, Chinese, and French translators provided with explanatory text and guidelines were able to produce translations that were more faithful to the intended meaning of English source survey items, as well as that were more culturally appropriate and natural sounding compared to those of translators who received no such guidance. Study findings indicate that while the provision of special instructions and documentation to translators had a considerable impact on their translations, the direction of the impact (positive or negative) differed across the target languages, according to scale ratings of professional survey researchers who were native speakers of those languages.
description: Survey Research Methods, Vol 3, No 3 (2009)
Additional file 1 of Knockdown of GTF2E2 inhibits the growth and progression of lung adenocarcinoma via RPS4X in vitro and in vivo
Creators: name: Bi, Guoshu
name: Zhu, Donglin
name: Bian, Yunyi
name: Huang, Yiwei
name: Zhan, Cheng
name: Yang, Yong
name: Wang, Qun
Publisher: name: figshare
Year: 2021
Subjects: Biochemistry
Space Science
Medicine
Molecular Biology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology
Cancer

description: Additional file 1: Table S1. The sequences of all the shRNAs and primers used in this study. Table S2. Results from shotgun liquid chromatography coupled with tandem mass spectrometry analyses.
The Impact of Survey and Response Modes on Current Smoking Prevalence Estimates Using TUS-CPS: 1992-2003
Creators: name: Soulakova, Julia
name: Davis, William W.
name: Hartman, Anne
name: Gibson, James
Publisher: name: European Survey Research Association
Year: 2009
Subjects: multiple logistic regression; replicate weights; race bridging; multiple imputation

description: This study identified whether survey administration mode (telephone or in-person) and respondent type (self or proxy) result in discrepant prevalence of current smoking in the adult U.S. population, while controlling for key sociodemographic characteristics and longitudinal changes of smoking prevalence over the 11-year period from 1992-2003. We used a multiple logistic regression analysis with replicate weights to model the current smoking status logit as a function of a number of covariates. The final model included individual- and family-level sociodemographic characteristics, survey attributes, and multiple two-way interactions of survey mode and respondent type with other covariates. The respondent type is a significant predictor of current smoking prevalence and the magnitude of the difference depends on the age, sex, and education of the person whose smoking status is being reported. Furthermore, the survey mode has significant interactions with survey year, sex, and age. We conclude that using an overall unadjusted estimate of the current smoking prevalence may result in underestimating the current smoking rate when conducting proxy or telephone interviews especially for some sub-populations, such as young adults. We propose that estimates could be improved if more detailed information regarding the respondent type and survey administration mode characteristics were considered in addition to commonly used survey year and sociodemographic characteristics. This information is critical given that future surveillance is moving toward more complex designs. Thus, adjustment of estimates should be contemplated when comparing current smoking prevalence results within a given survey series with major changes in methodology over time and between different surveys using various modes and respondent types.
description: Survey Research Methods, Vol 3, No 3 (2009)
Combating gender stereotypes by highlighting women's contribution to the history of societies
Creators: name: García-Peñalvo, F. J.
Publisher: name: Zenodo
Year: 2023
Subjects: Estereotipos de género
Contribución de las mujeres a la historia
Igualdad
Unión Europea
HerStory
Programa CERV

description: Se presenta una visión general del proyecto europeo HerStory - Combating gender stereotypes by highlighting women’s contribution to the history of societies (financiado por la Unión Europea a través del Programa CERV (Citizens, Equality, Rights and Values), CERV-2022-GE - Convocatoria de propuestas para promover la igualdad de género - Ref. 101087984) en el webminar “Resultados del Programa Ciudadanos, Igualdad, Derechos y Valores: Dos años promoviendo sociedades más justas e igualitarias”, organizado por el Punto Europeo de Ciudadanía como Punto Nacional de Contacto del programa CERV, y celebrado el 19 de abril de 2023.
description: HerStory - Combating gender stereotypes by highlighting women's contribution to the history of societies is a project funded under European Union Citizens, Equality, Rights and Values (CERV) Programme (Ref. 101087984).
The European Commission's support for the production of this publication does not constitute an endorsement of the contents, which reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
Theory of Structural Glasses and Supercooled Liquids
Creators: name: Lubchenko, Vassiliy
name: Wolynes, P. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We review the Random First Order Transition Theory of the glass transition, emphasizing the experimental tests of the theory. Many distinct phenomena are quantitatively predicted or explained by the theory, both above and below the glass transition temperature $T_g$. These include: the viscosity catastrophe and heat capacity jump at $T_g$, and their connection; the non-exponentiality of relaxations and their correlation with the fragility; dynamic heterogeneity in supercooled liquids owing to the mosaic structure; deviations from the Vogel-Fulcher law, connected with strings or fractral cooperative rearrangements; deviations from the Stokes-Einstein relation close to $T_g$; aging, and its correlation with fragility; the excess density of states at cryogenic temperatures due to two level tunneling systems and the Boson Peak.
description: submitted to Ann. Rev. Phys. Chem
Measurement errors in retrospective reports of event histories. A validation study with Finnish register data
Creators: name: Pyy-Martikainen, Marjo
name: Rendtel, Ulrich
Publisher: name: European Survey Research Association
Year: 2009
Subjects: measurement error bias; validation study; event history data; unemployment spells

description: It is well known that retrospective survey reports of event histories are affected by measurement errors. Yet little is known about the determinants of measurement errors in event history data or their effects on event history analysis. Making use of longitudinal register data linked at person-level with longitudinal survey data, we provide novel evidence about 1) type and magnitude of measurement errors in survey reports of event histories, 2) validity of classical assumptions about measurement errors, 3) measurement error bias and 4) effect of measurement accuracy in event history analysis. The classical assumptions about measurement errors are not supported by our measurement error models. Measurement error in both spell durations and spell outcomes are shown to be important causes of bias in an event history analysis. The effects of education and earnings-related unemployment benefit are estimated with sizeable bias. The magnitude of bias in estimated covariate effects does not depend on model type whereas the Cox model produces clearly less biased estimates of baseline hazard compared to the Weibull model. The large bias in the Weibull baseline hazard is shown to be almost entirely due to low measurement accuracy in survey data.
description: Survey Research Methods, Vol 3, No 3 (2009)
Fitting a linear model to survey data when the long-term average daily intake of a dietary component is an explanatory variable
Creators: name: Kott, Phillip S.
name: Guenther, Patricia M.
name: Wagstaff, David A.
name: Juan, WenYen
name: Kranz, Sibylle
Publisher: name: European Survey Research Association
Year: 2009
Subjects: extended linear model; instrumental-variable regression; measurement error; standard linear model; usual daily intake

description: The National Health and Nutrition Examination Survey (NHANES) collects information on both dietary intake and health conditions from a complex sample of individuals in the US. Instrumental-variable regression can be used to model an individual's health-related attribute as a linear function of explanatory variables including the average daily intake of dietary components. This overcomes the apparent limitation of the NHANES collecting dietary intake data on only two days per sampled individual because the averages of two days per individual exhibit considerable intra-individual variability. Readily available software routines can perform survey-sensitive instrumental-variable regression with data like that collected by the NHANES, but the relevant quantitative literature is not clear about what parameters these routines are actually estimating. We fit the long-term (usual) serum beta-carotene level of a population of women aged 20-64 to a linear function of each woman's long-term average (usual) daily beta-carotene intake from food and other explanatory variables using survey-sensitive instrumental regression and provide two interpretations of the results.
description: Survey Research Methods, Vol 3, No 3 (2009)
Substrate dependent bonding distances of PTCDA - A comparative XSW study on Cu(111) and Ag(111)
Creators: name: Gerlach, A.
name: Sellner, S.
name: Schreiber, F.
name: Koch, N.
name: Zegenhagen, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the adsorption geometry of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on Ag(111) and Cu(111) using X-ray standing waves. The element-specific analysis shows that the carbon core of the molecule adsorbs in a planar configuration, whereas the oxygen atoms experience a non-trivial and substrate dependent distortion. On copper (silver) the carbon rings resides 2.66 A (2.86 A) above the substrate. In contrast to the conformation on Ag(111), where the carboxylic oxygen atoms are bent towards the surface, we find that on Cu(111) all oxygen atoms are above the carbon plane at 2.73 A and 2.89 A, respectively.
description: 7 pages, 9 figure pages, 2 tables
Ανεξαρτησία και κυριαρχία σε έναν πολυεπίπεδο κόσμο. Η περίπτωση της ανεξαρτητοποίησης της Σκωτίας από το ΗΒ
Creators: name: Ντότσικας, Ελευθέριος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ανεξαρτησία
Κυριαρχία
Σκωτία
Independence
Sovereignty
Scotland

description: Τα αποσχιστικά κινήματα εξαπλώνονται στην Ευρώπη τα τελευταία χρόνια. Η περίπτωση μελέτης εξετάζει τη Σκωτία και το δημοψήφισμα της του 2014 και ειδικότερα τις θέσεις των πολιτικών κομμάτων της αντιπολίτευσης αλλά και της κυβέρνησης του SNP. Αναλύονται τόσο ομιλίες των πολιτικών αρχηγών στη Βουλή, όσο και η Λευκή Βίβλος της κυβέρνησης. Από τα πολιτικά προγράμματα και τις θέσεις των κομμάτων προκύπτει ότι η οικονομία κυριαρχεί στον διάλογο. Τα ενεργειακά αποθέματα της Βόρειας Θάλασσας, η νομισματική πολιτική και η θέση της Σκωτίας εντός ΕΕ αποτελούν τους κύριους άξονες αντιπαράθεσης προγραμμάτων. Η μεν πλευρά της παραμονής στην Ένωση με το Ηνωμένο Βασίλειο υιοθετεί επιχειρήματα που δεικνύουν την ενδεχόμενη οικονομική και πολιτική αστάθεια που θα προκύψει καθιστώντας επισφαλή της θέση της Σκωτίας στο ΝΑΤΟ την ΕΕ καθώς και την διατήρηση της λίρας ως νομίσματος. Στον αντίποδα η πλευρά της εξόδου υποστηρίζει πώς η περιοχή ως δυνητικά κυρίαρχο κράτος θα αποτελεί μέλος του ΝΑΤΟ και της ΕΕ και της νομισματικής ζώνης της λίρας. Ο παράγοντας του Brexit μεταβάλλει τα δεδομένα καθώς ήδη στην προ-δημοψηφισματική περίοδο το SNP προέβαλε το ζήτημα μιας πιθανής εξόδου του Ηνωμένου Βασιλείου από την ΕΕ και άρα η Σκωτία de facto αντιμετώπιζε το φάσμα της εξόδου ως μέλος του Ηνωμένου Βασιλείου. Έτσι ο παράγοντας του Brexit επαναφέρει την αντιπαράθεση SNP- Συντηρητικών για διεξαγωγή ενός δεύτερου δημοψηφίσματος για την ανεξαρτησία της Σκωτίας
description: Separatist movements are spreading all over Europe the past years. This case study examines Scotland and its own independence referendum of 2014 and more specially the positions of the opposition political parties but also of the SNP government’s. The parliamentary speeches of the political leaders as well as the White Paper of the government are being analysed. From the political programs and the parties’ positions derives that economy dominates the debate. North Sea’s energy sources, monetary policy and Scottish membership in the EU consist the keystone program confrontation. The ones who side with remaining in the Union with the United Kingdom adopt arguments pointing out the potential financial and political instability that might result endangering the Scottish membership in NATO and the EU as well as keeping sterling as currency. On the other hand the ones who favour exiting support that Scotland as potential sovereign state will be a member of NATO, the EU and the sterling zone. The Brexit factor changes the facts since even in the pre-referendum period, SNP put the issue of a potential UK exit from the EU and so Scotland faced a de facto exit from the EU as part of the UK. So the Brexit factor brings back the SNP- Conservatives confrontation on holding a second independence referendum
Διαδίκτυο και ανήλικοι
Creators: name: Ιωακειμίδης, Κωνσταντίνος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Διαδίκτυο
Ανήλικοι
Εθισμός στο διαδίκτυο
Internet
Minors
Internet addiction

description: Το διαδίκτυο αποτελεί ένα μέσο το οποίο δεν είναι πάντοτε ασφαλές και εγκυμονεί κινδύνους. Οι ενήλικοι, κατά τεκμήριο, διαθέτουν γνώσεις οι οποίες τους βοηθούν να αποφύγουν κινδύνους που ενδεχομένως θα συναντήσουν στο διαδίκτυο, αλλά για τους ανηλίκους δεν ισχύει το ίδιο, αφού λόγω της απειρίας τους, δεν είναι σε θέση να αναγνωρίσουν απειλές που ελλοχεύουν και να προστατέψουν τον εαυτό τους.
description: The internet is a means of communication which is not always safe and can pose risks. Adults by presumption have knowledge and experience which helps them to avoid danger they may face on the internet, but for minors it is not always the case because of their lack of experience. They are also unable to identify threats and protect themselves.
Large-scale Monte Carlo simulations of the isotropic three-dimensional Heisenberg spin glass
Creators: name: Lee, L. W.
name: Young, A. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the Heisenberg spin glass by large-scale Monte Carlo simulations for sizes up to 32^3, down to temperatures below the transition temperature claimed in earlier work. The data for the larger sizes show more marginal behavior than that for the smaller sizes, indicating the lower critical dimension is close to, and possibly equal to three. We find that the spins and chiralities behave in a quite similar manner.
description: 8 pages, 8 figures. Replaced with published version
Variance estimation for complex indicators of poverty and inequality using linearization techniques
Creators: name: Osier, Guillaume
Publisher: name: European Survey Research Association
Year: 2009
Subjects: EU-SILC survey; non-linear statistics; influence function; standard error; confidence interval; design effect coefficient

description: The paper presents the Eurostat experience in calculating measures of precision, including standard errors, confidence intervals and design effect coefficients - the ratio of the variance of a statistic with the actual sample design to the variance of that statistic with a simple random sample of same size - for the "Laeken" indicators, that is, a set of complex indicators of poverty and inequality which had been set out in the framework of the EU-SILC project (European Statistics on Income and Living Conditions). The Taylor linearization method (Tepping, 1968; Woodruff, 1971; Wolter, 1985; Tille, 2000) is actually a well-established method to obtain variance estimators for nonlinear statistics such as ratios, correlation or regression coefficients. It consists of approximating a nonlinear statistic with a linear function of the observations by using first-order Taylor Series expansions. Then, an easily found variance estimator of the linear approximation is used as an estimator of the variance of the nonlinear statistic. Although the Taylor linearization method handles all the nonlinear statistics which can be expressed as a smooth function of estimated totals, the approach fails to encompass the "Laeken" indicators since the latter are having more complex mathematical expressions. Consequently, a generalized linearization method (Deville, 1999), which relies on the concept of influence function (Hampel, Ronchetti, Rousseeuw and Stahel, 1986), has been implemented. After presenting the EU-SILC instrument and the main target indicators for which variance estimates are needed, the paper elaborates on the main features of the linearization approach based on influence functions. Ultimately, estimated standard errors, confidence intervals and design effect coefficients obtained from this approach are presented and discussed.
description: Survey Research Methods, Vol 3, No 3 (2009)
Χαμιλτονιανή και πρόβλημα ιδιοτιμών για μονοστρωματικό ΜοS2
Creators: name: Νούση, Μυρσίνη Ευφροσύνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Χαμιλτονιανή μήτρα
Διχαλκογενίδια μέταλλα μετάπτωσης
Ατομικά τροχιακά
Hamiltonian matrix
Transition metal dichalcogenides
Atomic orbitals

description: Σκοπός της διπλωματικής αυτής είναι η κατασκευή ενός αποτελεσματικού μοντέλου Tight Binding Hamiltonian (TBH) για το δισουλφίδιο του μολυβδαινίου (MoS2), ένα διχαλκογενίδιο μέταλλο μετάπτωσης (TMD). Αρχικά, αυτό που εξετάσθηκε ήταν η ατομική και η ηλεκτρονιακή δομή του μορίου, όπου μέσα από τις πληροφορίες που εξήχθησαν επιλέχθηκαν τα κατάλληλα ατομικά τροχιακά, δηλαδή τα {dz2}, {dx2-y2, dxy} και {px, py} που διέπουν τη δομή ζώνης χαμηλής ενέργειας (low-energy band structure) του υλικού που μελετάμε. Μετέπειτα, ορίστηκε με κατάλληλο τρόπο η βάση ώστε να γίνει παράλληλα εκμεταλλεύσιμη η συμμετρία του μορίου, επομένως μειώθηκαν οι ανεξάρτητες παράμετροι και απλοποιήθηκε η λύση του μοντέλου. Αποκτήσαμε έτσι τον Χαμιλτονιανό πίνακα 7×7, δηλαδή ένα μοντέλο εφτά ζωνών για κάθε ένα από τα σπιν, όπου οι τέσσερις προέρχονται από τη συνεισφορά των p τροχιακών του θείου (S) και οι τρεις από τα d τροχιακά του μολυβδαινίου (Mo). Στην συνέχεια, λόγω έλλειψης εξωτερικού δυναμικού, προσδιορίστηκε η συμμετρία μεταξύ των στρωμάτων του θείου και έτσι μειώθηκε σε έναν Χαμιλτονιανό πίνακα 5×5. Με την επίλυση του μοντέλου αποκτήσαμε τις ιδιοτιμές όπου περιλαμβάνουν τις δεσμικές (με την χαμηλότερη ενέργεια) και τις αντιδεσμικές (με την υψηλότερη ενέργεια) ενεργειακές ζώνες των p-d. Με αυτό τον τρόπο αποδεικνύεται η καλή αναπαράσταση της ηλεκτρονιακής δομής του μορίου MoS2 για περεταίρω χρήση της σε θεωρητικές μελέτες με μεθόδους προσομοίωσης
description: The scope of this thesis is to construct an effective Tight Binding Hamiltonian (TBH) model for molybdenum disulfide (MoS2), a transition metal dichalcogenide (TMD). Initially the study focuses on the atomic and electronics structure of the molecule, whereby we selected the appropriate atomic orbitals, i.e. {dz2}, {dx2-y2, dxy} and {px, py} governing the low-energy band structure of the material studied. Then the base is set properly in order to take advantage of the symmetry of the molecule as well. As a result, we reduced the independent parameters and simplified the solution of our model. Thus, we obtained the Hamiltonian matrix 7×7, a seven-band model for each one of the spins, in which four of them are contributed from sulfur’s (S) p orbitals and the three from molybdenum (Mo) d orbitals. Subsequently, due to absence of external potential, the symmetry between the sulfur’s layer was obtained and so the Hamiltonian matrix reduced to 5×5. By solving the model’s equation, we have obtained the eigenvalues, which include the energy bands of p-d, i.e. the bonding (with the lower energy) and the anti-bonding (with higher energy) bands. In conclusion, with the use of the Hamiltonian model a good representation of the electronic structure was occurred, for MoS2 molecule. As a result, this precise approach could lead to further theoretical simulation methods
Does Visual Appeal Matter? Effects of Web Survey Aesthetics on Survey Quality
Creators: name: Mahon-Haft, Taj Alexander
name: Dillman, Don A.
Publisher: name: European Survey Research Association
Year: 2010
Subjects: aesthetics; web survey; screen design; emotional design; visceral reactions

description: Due to recent scholarly attention to visual design, much is known about the effects that specific design features have on web surveys, but little attention has been paid to the effects of overall screen design. Applying Norman's (2004) emotional design concepts to web survey design, we propose and test hypotheses related to potential detrimental impacts of poor screen aesthetics. To do so, we compare data collected from two versions of the same Student Experience Survey, an experimental design representing poor aesthetics and a control design representing good emotional design. By triggering negative visceral responses and, thus, emotional reactions, the experimental design is predicted to reduce data quality along four avenues: respondent cooperation, substantive response patterns, respondent commitment, and subjective survey experience. Sixteen of 30 total comparisons show reduced data quality on the experimental forms, and all avenues to quality data show some impact. These findings suggest that screen design aesthetics and emotional reactions can impact data quality, independent of survey content. However, the inconsistent results according to some indicators suggest the need for further research on screen design effects to hone our understanding.
description: Survey Research Methods, Vol 4, No 1 (2010)
SelfHAR: Improving Human Activity Recognition through Self-training with Unlabeled Data
Creators: name: Tang, Chi Ian
name: Perez-Pozuelo, Ignacio
name: Spathis, Dimitris
name: Brage, Soren
name: Wareham, Nick
name: Mascolo, Cecilia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Machine learning and deep learning have shown great promise in mobile sensing applications, including Human Activity Recognition. However, the performance of such models in real-world settings largely depends on the availability of large datasets that captures diverse behaviors. Recently, studies in computer vision and natural language processing have shown that leveraging massive amounts of unlabeled data enables performance on par with state-of-the-art supervised models. In this work, we present SelfHAR, a semi-supervised model that effectively learns to leverage unlabeled mobile sensing datasets to complement small labeled datasets. Our approach combines teacher-student self-training, which distills the knowledge of unlabeled and labeled datasets while allowing for data augmentation, and multi-task self-supervision, which learns robust signal-level representations by predicting distorted versions of the input. We evaluated SelfHAR on various HAR datasets and showed state-of-the-art performance over supervised and previous semi-supervised approaches, with up to 12% increase in F1 score using the same number of model parameters at inference. Furthermore, SelfHAR is data-efficient, reaching similar performance using up to 10 times less labeled data compared to supervised approaches. Our work not only achieves state-of-the-art performance in a diverse set of HAR datasets, but also sheds light on how pre-training tasks may affect downstream performance.
description: Accepted for publication in Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) 2021
K0 and K+ meson electromagnetic form factors: a nonperturbative relativistic quark model versus experimental, perturbative and lattice Quantum-Chromodynamics results
Creators: name: Troitsky, S. V.
name: Troitsky, V. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been previously shown that a particular nonperturbative constituent-quark model of hadrons describes experimental measurements of electromagnetic form factors of light charged mesons through a small number of common phenomenological parameters, matching at the same time the Quantum-Chromodynamics (QCD) asymptotics for the pi-meson form factor at large momentum transfer. Here we start with the determination of the K0 electromagnetic form factor in this approach. Precise measurement of the K0 charge radius makes it possible to constrain model parameters with high accuracy. Then, with all parameters fixed, we revisit the K+ form factor and find that it matches experimental measurements in the infrared, lattice results at moderate momentum transfer and the perturbative QCD asymptotics in the ultraviolet. In this way we obtain a narrow constraint on the K+ charge radius, = 0.403 +0.007 -0.006 fm^2, and extend the successful infrared-ultraviolet connection from pi to K mesons.
description: 7 pages, 5 figures. V2: updated uncertainty in the quark anomalous magnetic moment; version accepted by Phys. Rev. D
An isoperimetric inequality for uniformly log-concave measures and uniformly convex bodies
Creators: name: Milman, Emanuel
name: Sodin, Sasha
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We prove an isoperimetric inequality for the uniform measure on a uniformly convex body and for a class of uniformly log-concave measures (that we introduce). These inequalities imply (up to universal constants) the log-Sobolev inequalities proved by Bobkov--Ledoux as well as the isoperimetric inequalities due to Bakry-Ledoux and Bobkov--Zegarlinski. We also recover a concentration inequality for uniformly convex bodies, similar to that proved by Gromov--Milman.
description: 39 pages
Phase diagram in the imaginary chemical potential region and extended Z3 symmetry
Creators: name: Sakai, Yuji
name: Kashiwa, Kouji
name: Kouno, Hiroaki
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Phase transitions in the imaginary chemical potential region are studied by the Polyakov loop extended Nambu-Jona-Lasinio (PNJL) model that possesses the extended Z3 symmetry. The extended Z3 invariant quantities such as the partition function, the chiral condensate and the modifed Polyakov loop have the Roberge-Weiss (RW) periodicity. There appear four types of phase transitions; deconfinement, chiral, Polykov-loop RW and chiral RW transitions. The orders of the chiral and deconfinement transitions depend on the presence or absence of current quark mass, but those of the Polykov-loop RW and chiral RW transitions do not. The scalar-type eightquark interaction newly added in the model makes the chiral transition line shift to the vicinity of the deconfiment transition line.
description: 22 pages,17 figures
Conflict Deaths in Iraq:  A Methodological Critique of the ORB Survey Estimate
Creators: name: Spagat, Michael
name: Dougherty, Joshua
Publisher: name: European Survey Research Association
Year: 2010
Subjects: Iraq; conflict mortality; survey quality; ORB poll; survey error

description: In September of 2007 ORB, a British opinion polling firm, released an estimate that 1.2 million Iraqis had been killed in the conflict, subsequently lowering its estimate to 1 million. We compare three ORB polls and find important irregularities in ORB's mortality data in four central governorates of Iraq that account for more than 80% of the estimated deaths. These internal validity checks indicate that the ORB mortality data are not credible and would suggest a much lower estimate than ORB has published. We also analyze a number of specific error sources in the poll. Systematic errors, which include non-coverage and measurement errors, mostly point toward overestimation. Variable errors are also substantial but they are difficult to quantify in part due to incomplete disclosure of methodological details by ORB. External validity checks, including comparisons with two much larger and higher quality surveys, reinforce the conclusion that ORB has overestimated the number killed in Iraq by a wide margin. Thus, our paper answers a challenge facing the field of survey methodology, to explain how different surveys have produced such divergent mortality estimates for Iraq.
description: Survey Research Methods, Vol 4, No 1 (2010)
XIX АСР ОХИРГИ ЧОРАГИ – XX АСР БОШЛАРИДА ТУРКИСТОНДАГИ АФҒОН СИЁСИЙ ҚОЧОҚЛАРИ ХУСУСИДА
Creators: name: Саидов, Ф.
Publisher: name: Zenodo
Year: 2024

description: Ушбу мақолада XIX аср охирида Афғонистонда юз берган сиёсий курашлар туфайли Туркистонга қочиб ўтганлар тарихи ҳақида архив манбалари ва адабиётлар таҳлили орқали фикр юритилади.
The Upgrade of the CMS Tracker at HL-LHC
Creators: name: La Rosa, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In the high luminosity scenario of the LHC (HL-LHC), which will bring the instantaneous luminosity up to 7.5\,$\times$\,$10^{34}$\,cm$^{-2}$s$^{-1}$, ATLAS and CMS will need to operate at up to 200 interactions per 25\,ns beam crossing and reaching up to 4000\,fb$^{-1}$ of integrated luminosity. To achieve their physics goals the experiments will need to improve the tracking and vertexing capability and the ability to selectively trigger on specific physics events at reasonable thresholds. The upgrade of the CMS Tracker requires designing new inner and outer tracking detectors to cope with the increased luminosity and to implement first trigger level functionality. This paper describes the new layout and the technological choices together with some highlights of research and development activities.
description: 9 pages, accepted for publication in JPS as conference proceedings for VERTEX2020 conference. arXiv admin note: text overlap with arXiv:1912.02061
"Pre-conditioning" for feature selection and regression in high-dimensional problems
Creators: name: Paul, Debashis
name: Bair, Eric
name: Hastie, Trevor
name: Tibshirani, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62J02

description: We consider regression problems where the number of predictors greatly exceeds the number of observations. We propose a method for variable selection that first estimates the regression function, yielding a "pre-conditioned" response variable. The primary method used for this initial regression is supervised principal components. Then we apply a standard procedure such as forward stepwise selection or the LASSO to the pre-conditioned response variable. In a number of simulated and real data examples, this two-step procedure outperforms forward stepwise selection or the usual LASSO (applied directly to the raw outcome). We also show that under a certain Gaussian latent variable model, application of the LASSO to the pre-conditioned response variable is consistent as the number of predictors and observations increases. Moreover, when the observational noise is rather large, the suggested procedure can give a more accurate estimate than LASSO. We illustrate our method on some real problems, including survival analysis with microarray data.
Repeating Fast Radio Bursts from Collapses of the Crust of a Strange Star
Creators: name: Geng, Jin-Jun
name: Li, Bing
name: Huang, Yong-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Strange stars (SSs) are compact objects made of deconfined quarks. It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS. Here we suggest that the intriguing repeating fast radio bursts (FRBs) are produced by the intermittent fractional collapses of the crust of an SS induced by refilling of accretion materials from its low-mass companion. The periodic/sporadic/clustered temporal behaviors of FRBs could be well understood in our scenario. Especially, the periodicity is attributed to the modulation of accretion rate through the disk instabilities. To account for a $\sim 16$-day periodicity of the repeating FRB source 180916.J0158+65, a Shakura-Sunyaev disk with a viscosity parameter of $α\simeq 0.004$ and an accretion rate of $\simeq 3 \times 10^{16}$~g~s$^{-1}$ in the low state is invoked. Our scenario, if favored by future observations, will serve as indirect evidence for the strange quark matter hypothesis.
description: 14 pages, 2 figures, The Innovation, accepted
Continuous-variable teleportation in the characteristic-function description
Creators: name: Marian, Paulina
name: Marian, Tudor A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a description of the continuous-variable teleportation protocol in terms of the characteristic functions of the quantum states involved. The Braunstein--Kimble protocol is written for an unbalanced homodyne measurement and arbitrary input and resource states. We show that the output of the protocol is a superposition between the input one-mode field and a classical one induced by measurement and classical communication. We choose to describe the input state distortion through teleportation by the average photon number of the measurement-induced field. Only in the case of symmetric resource states we find a relation between the optimal added noise and the minimal EPR correlations used to define inseparability.
description: 12 pages
B-Mode contamination by synchrotron emission from 3-years WMAP data
Creators: name: Carretti, E.
name: Bernardi, G.
name: Cortiglioni, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the contamination of the B-mode of the Cosmic Microwave Background Polarization (CMBP) by Galactic synchrotron in the lowest emission regions of the sky. The 22.8-GHz polarization map of the 3-years WMAP data release is used to identify and analyse such regions. Two areas are selected with signal-to-noise ratio S/N<2 and S/N<3, covering ~16% and ~26% fraction of the sky, respectively. The polarization power spectra of these two areas are dominated by the sky signal on large angular scales (multipoles l < 15), while the noise prevails on degree scales. Angular extrapolations show that the synchrotron emission competes with the CMBP B-mode signal for tensor-to-scalar perturbation power ratio $T/S = 10^{-3}$ -- $10^{-2}$ at 70-GHz in the 16% lowest emission sky (S/N<2 area). These values worsen by a factor ~5 in the S/N<3 region. The novelty is that our estimates regard the whole lowest emission regions and outline a contamination better than that of the whole high Galactic latitude sky found by the WMAP team (T/S>0.3). Such regions allow $T/S \sim 10^{-3}$ to be measured directly which approximately corresponds to the limit imposed by using a sky coverage of 15%. This opens interesting perspectives to investigate the inflationary model space in lowest emission regions.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters
Fitting the $Z b \bar b$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
Creators: name: Jurčiukonis, Darius
name: Lavoura, Luis
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the new contributions to the parameters $g_L$ and $g_R$ of the $Z b \bar b$ vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental data. We propose a solution to this problem, wherein $g_R$ has the opposite sign from the one predicted by the Standard Model; this solution, though, necessitates light scalars and large Yukawa couplings in the MHDM.
description: 30 pages, 13 figures; v2: added two footnotes and two references; v3: modified 4 figures and added 3 new figures, all sections have changes, added new appendix and added references; v4 matches published version