cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Strong X-Ray Flux Ratio Anomaly in the Quadruply Lensed Quasar PG 1115+080
Creators: name: Pooley, David
name: Blackburne, Jeffrey A.
name: Rappaport, Saul
name: Schechter, Paul L.
name: Fong, Wen-fai
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: PG 1115+080 is a quadruply lensed quasar at z=1.72 whose image positions are well fit by simple models of the lens galaxy (at z=0.31). At optical wavelengths, the bright close pair of images exhibits a modest flux ratio anomaly (factors of ~1.2-1.4 over the past 22 years) with respect to these same models. We show here that as observed in X-rays with Chandra, the flux ratio anomaly is far more extreme, roughly a factor of 6. The contrasting flux ratio anomalies in the optical and X-ray band confirm the microlensing hypothesis and set a lower limit on the size of the optical continuum emission region that is \~10-100 times larger than expected from a thin accretion disk model.
description: 6 pages, slightly revised, accepted to ApJ
Some Results of Experimental Check of The Model of the Object Innovativeness Quantitative Evaluation
Creators: name: Ivanov, V. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: The paper presents the results of the experiments that were conducted to confirm the main ideas of the proposed approach to determining the objects innovativeness. This approach assumed that the product life cycle of whose descriptions are placed in different data warehouses is adequate. The proposed formal model allows us to calculate the quantitative value of the additive evaluation criterion of objects innovativeness. The obtained experimental data make it possible to evaluate the adopted approach correctness.
description: 10 pages, in Russian
Factors influencing intergenerational conflict for immigrant and non-immigrant adolescents
Creators: name: McLaren, Norma-Jean
Publisher: name: University of British Columbia
Year: 2011

description: This study examined the factors related to intergenerational conflict as perceived by immigrant and non-immigrant adolescents. The study replicated the work of Doreen Rosenthal (1989) using a modified version of the questionaire she administered to adolescents in Melbourne, Australia. This study was administered to 300 grade eleven students in two Vancouver high schools. The data was analysed to determine the effect of the following factors on intergenerational conflict: immigrant status, bicultural adaptation, gender, ethnicity, age at time of immigration, presence or absence of a common complex language with parents. Analysis revealed that students in general reported a moderate amount of conflict with their parents. Intergenerational conflict was not affected by whether or not the adolescent was an immigrant to Canada. Female adolescents reported higher conflict with their fathers, but no gender differences were noted with mothers. Of the three largest ethnic groups in the study, Indo-Canadians reported significantly more conflict with mothers than did either Euro-Canadians or Chinese-Canadians and a greater amount of conflict with fathers than did Chinese-Canadians. Chinese-Canadians reported less conflict with either parent than did either Indo-Canadians or Euro-Canadians. Bicultural students did not report significantly less conflict than traditional, assimilated or marginal adolescents. Age at the time of immigration did not affect the amount of intergenerational conflict. And finally, adolescents who speak a common language with their parents in the home perceived less conflict with mothers. While few recommendations could be made as a result of the findings, a framework for the analysis of integration patterns was developed, a comprehensive review of the literature conducted and questions for future research on intergenerational conflict were raised.
Sequential Change-point Detection for High-dimensional and non-Euclidean Data
Creators: name: Chu, Lynna
name: Chen, Hao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In many applications, it is often of practical and scientific interest to detect anomaly events in a streaming sequence of high-dimensional or non-Euclidean observations. We study a non-parametric framework that utilizes nearest neighbor information among the observations to detect changes in an online setting. It can be applied to data in arbitrary dimension and non-Euclidean data as long as a similarity measure on the sample space can be defined. We consider new test statistics under this framework that can detect anomaly events more effectively than the existing test while keeping the false discovery rate controlled at a fixed level. Analytic formulas approximating the average run lengths of the new approaches are derived to make them fast applicable to modern datasets. Simulation studies are provided to support theoretical results. The proposed approach is illustrated with an analysis of the NYC taxi dataset.
Global existence for the p-Sobolev flow
Creators: name: Kuusi, Tuomo
name: Misawa, Masashi
name: Nakamura, Kenta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B45 (35B65 35D30 35K61)

description: In this paper, we study a doubly nonlinear parabolic equation arising from the gradient flow for p-Sobolev type inequality, referred as p-Sobolev flow. In the special case p=2 our theory includes the classical Yamabe flow on a bounded domain in Euclidean space. Our main aim is to prove the global existence of the p-Sobolev flow together with its qualitative properties.
description: arXiv admin note: text overlap with arXiv:2103.15259
Automata with Nested Pebbles Capture First-Order Logic with Transitive Closure
Creators: name: Engelfriet, Joost
name: Hoogeboom, Hendrik Jan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.1.1; F.4.1; F.4.3

description: String languages recognizable in (deterministic) log-space are characterized either by two-way (deterministic) multi-head automata, or following Immerman, by first-order logic with (deterministic) transitive closure. Here we elaborate this result, and match the number of heads to the arity of the transitive closure. More precisely, first-order logic with k-ary deterministic transitive closure has the same power as deterministic automata walking on their input with k heads, additionally using a finite set of nested pebbles. This result is valid for strings, ordered trees, and in general for families of graphs having a fixed automaton that can be used to traverse the nodes of each of the graphs in the family. Other examples of such families are grids, toruses, and rectangular mazes. For nondeterministic automata, the logic is restricted to positive occurrences of transitive closure. The special case of k=1 for trees, shows that single-head deterministic tree-walking automata with nested pebbles are characterized by first-order logic with unary deterministic transitive closure. This refines our earlier result that placed these automata between first-order and monadic second-order logic on trees.
description: Paper for Logical Methods in Computer Science, 27 pages, 1 figure
Droplet condensation in the lattice gas with density functional theory
Creators: name: Maeritz, Manuel
name: Oettel, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A density functional for the lattice gas (Ising model) from fundamental measure theory is applied to the problem of droplet states in three-dimensional, finite systems. Similar to previous simulation studies, the sequence of droplets changing to cylinders and to planar slabs is found upon increasing the average density $\barρ$ in the system. Owing to the discreteness of the lattice, additional effects in the state curve for the chemical potential $μ(\barρ)$ are seen upon lowering the temperature away from the critical temperature (oscillations in $μ(\barρ)$ in the slab portion and spiky undulations in $μ(\barρ)$ in the cylinder portion as well as an undulatory behavior of the radius of the surface of tension $R_s$ in the droplet region). This behavior in the cylinder and droplet region is related to washed-out layering transitions at the surface of liquid cylinders and droplets. The analysis of the large-radius behavior of the surface tension $γ(R_s)$ gave a dominant contribution $\propto 1/R_s^2$, although the consistency of $γ(R_s)$ with the asymptotic behavior of the radius-dependent Tolman length seems to suggest a weak logarithmic contribution $\propto \ln R_s/R_s^2$ in $γ(R_s)$. The coefficient of this logarithmic term is smaller than a universal value derived with field-theoretic methods.
description: 14 pages, 8 figures, to be published in Phys. Rev. E
Μελέτη του οισοφάγου σε ασθενείς με γαστροοισοφαγική παλινδρόμηση: ο ρόλος του ελικοβακτηριδίου του πυλωρού
Creators: name: Μάρης, Θεοφάνης Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: 24ωρη φορητή πεχαμετρία
Οισοφαγική μανομετρία
24-hours Ph-metry
Oesophageal manometry

description: Σκοπός : η προσπάθεια απάντησης στη σχέση ΓΟΠΝ-Ελικοβακτηρίδου του πυλωρού. Μέθοδοι : 27 ασθενείς Ηρ(+) και 20 Ηρ(-) με ΓΟΠΝ υποβλήθηκαν σε κλινική εξέταση, μανομετρία, πεχαμετρία. Οι Ηρ(+) έλαβαν εκρίζωση και επανεξετάσθηκαν με τις ίδιες μεθόδους. Αποτελέσματα : δεν υπήρχε διαφορά μεταξύ των δύο ομάδων στην ηλικία, φύλο, συμπτώματα, μανομετρία, πεχαμετρία. Ολοι οι Ηρ(+) ασθενείς είχαν γαστρίτιδα άντρου. Μετά την εκρίζωση η γαστρίτιδα ιάθηκε σε όλους. Η κλινική εικόνα βελτιώθηκε σημαντικά(Ρ<0.001). Ο δείκτης PEMEESTER παρουσίαση μη σημαντική τάση βελτίωσης. Ο περισταλτισμός του ισοφάγου επανήλθε σε όλους τους ασθενείς. Η πίεση του κατώτερου οισοφαγικού σφιγκτήρα(ΚΟΣ) ανήλθε σημαντικά(ρ<0.005). Συμπεράσματα : η εκρίζωση του Ηρ σε ασθενείς με ΓΟΠΝ βελτίωσε την κλινική εικόνα, βελτίωση σημαντικά την πίεση του ΚΟΣ και την όξινη παλινδρόμηση. Τα ευρήματα μας πιθανόν σχετίζονται με τον τύπο της γαστρίτιδας των ασθενών μας (Γαστρίτιδα αντρου)
description: Aim : investigation of the relationship between Hp and GERD. Methods : 27 patients Hp(+) and 20 patients Hp(-) with GERD eunderwent endoscopy. Manometry and Phmetry. All Hp(+) patients received erapication treatment and they were re-examined with the same methods. Results : there were no differences between the 2 groups in sex, age, oesophagitis, manometry, Phmetry. All Hp(+) patients had antrum gastritis. After eradication clinical symptoms improved gastritis. After eradication clinical symptoms improved(p<0.001). Gastritis was healed lower oesophageal sphincter pressure was increased(p<0.005). Demeester score decreased(NS). Conclusions : the eradication of Hp results in a improvement of symptoms, an increase in losp, and decrease in acid refux. Our results are most likely due to the type of gastritis(Antral)
Designing a Cyber-security Culture Assessment Survey Targeting Critical Infrastructures During Covid-19 Crisis
Creators: name: Georgiadou, Anna
name: Mouzakitis, Spiros
name: Askounis, Dimitris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The paper at hand presents the design of a survey aiming at the cyber-security culture assessment of critical infrastructures during the COVID-19 crisis, when living reality was heavily disturbed and working conditions fundamentally affected. The survey is rooted in a security culture framework layered into two levels, organizational and individual, further analyzed into 10 different security dimensions consisted of 52 domains. An in-depth questionnaire building analysis is presented focusing on the aims, goals, and expected results. It concludes with the survey implementation approach while underlining the framework's first application and its revealing insights during a global crisis.
description: 18 pages, 1 figure, 4 tables. arXiv admin note: substantial text overlap with arXiv:2012.13718
Διερεύνηση του ρόλου των νευροδιαβιβαστικών αμινοξέων στη μήτρα επίμυος
Creators: name: Κυριαζάκη, Αλεξάνδρα Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Γ-αμινοβουτυρικό οξύ
Γλουταμινικό οξύ
GABA
Glutomic acid

description: Σκοπός της παρούσας μελέτης είναι η διερεύνηση του ρόλου των νευροδιαβιβαστικών αμινοξέων στην συσταλτικότητα της μήτρας. Το πείραμα διεξήχθει in vitro σε μήτρα επίμυος και περιλάμβανε τρία μέρη : στο πρώτο μέρος του πειράματος δημιουργήθηκε καμπύλη δόσης-απόκρισης με χρήση των νευροδιαβιβαστών(γ-αμινοβουτυρικό οξύ, γλυκίνη) σε ευρύτερο φάσμα συγκεντρώσεων(10^(-12)-10^(-4)Μ), ώστε να διαπιστωθεί η επίδρασή τους σε υποδοχείς. Το δεύτερο σκέλος του πειράματος περιλάμβανε την αντίστοιχη καμπύλη δόσης απόκρισης με χρήση ανταγωνιστών τους (μπικουκουλίνη, στρυχνίνη και ταυρίνη αντίστοιχα) σε ευρύ φάσμα συγκεντρώσεων. Στο τρίτο σκέλος του πειράματος έγινε η συνεπίδραση αγωνιστή και ανταγωνιστή. Τα συμπεράσματα της παρούσας μελέτης είναι : a)ότι με χρήση φαρμακολογικής μεθόδου, αποδεικνύεται η ύπαρξη GABA(^A) υποδοχέων στη μήτρα επίμυος, οι οποίοι δρουν κατασταλτικά στο μυομήτριο, β)τα αποτελέσματα παρουσιάζουν σαφείς ενδείξεις ύπαρξης υποδοχέων του γλουταμινικού οξέος στη μήτρα, οι οποίοι μάλιστα δρουν κατασταλτικά στο μυομήτριο, και γ)ο ρόλος της γλυκίνης φαίνεται ότι είναι κατασταλτικός στο μυομήτριο
description: Aim of this study is the examination of neurotransmitters' effect on uterus contraction. The neurotransitters that have been used in the present study were : GABA, Glutaminc acid and Glycine. The experiment took place in vitro, at rats' uterus in three parts : at first part, a dose-response curve was obtained using neurotransmitters(GABA, Glutamic acid and Glycine) at various concentrations(10^(-12M-10^(-4)M), in order to find their effect on the uterus contractions. Results show that all neurotransmitters have an inhibiting effect on uterus contractions, Similar dose-response curves have been obtained using the neurotransmitters' antagonists(Bicuculline, Strychnine and Taurine respectively) at wide concentration range too. Finally, in the third part of the experiment, the presence of receptors is proved by results studying the above neurotransmitters on the uterus contractions after pre-tratment of the tissue with the relative antagonist. Concluding, we have proved that GABA^(A) receptors are present at rats' uterus, having an inhibiting effect on the myometrium. Serius clues of Glutamic acid receptors presence arise from the experiment, receptors that also have an inhibiting effect on the myometrium. Finally, Glycine receptors with similar relaxing effect seem to be present at rats' myometrium
12-18 Yaş Arasındaki Ergenlerin Saldırganlık Düzeylerinin Cinsiyet Açısından İncelenmesi
Creators: name: DÜZ, Serkan
Publisher: name: Zenodo
Year: 2023

description: Günümüzde saldırganlık davranışları giderek yaygın davranışlar haline gelmektedir. Ergenlerle ilgili şiddet haberleri ve ölümle sonuçlanan kavgalar artış göstermektedir. Bu çalışmanın amacı, ergenlik dönemindeki bireylerin cinsiyetine göre saldırganlık düzeylerini etkileyen faktörleri incelemektir. Araştırmaya, Mardin ve Şırnak illerinde yaşayan yaşları 12-18 arasındaki 1051 ergen birey katıldı. Veri toplama aracı olarak Buss-Perry Agresyon Ölçeği kullanıldı. Araştırma kapsamında ergen bireylerin cinsiyet, yaş, fiziksel aktiviteye katılım, spor branşı, ebeveynlerin eğitim düzeyi ve yaşadıkları yer değişkenlerine göre saldırganlık düzeyleri değerlendirildi. Araştırmanın bulgularına göre kadın katılımcıların %40,4'ünün orta, %13,6'sının yüksek; erkek katılımcıların ise %39,9'unun orta, %14,9'unun da yüksek saldırganlık düzeyine sahip olduğu belirlendi. Katılımcıların cinsiyetleri arasında anlamlı farklılık bulundu (p<0.05). Bunun yanında kadın katılımcılar arasında yaşa, fiziksel aktiviteye katılıma, yapılan spor branşına, anne ve baba eğitim durumuna ve yetiştiği yere göre bazı alt boyutlarda anlamlı farklılığa ulaşıldı (p<0.05). Erkek katılımcılar arasında ise yaşa, anne eğitim durumuna ve yetiştiği yere göre bazı saldırganlık alt boyutlarında anlamlı farklılaşma görüldü (p<0.05). Sonuç olarak cinsiyet açısından yaş, fiziksel aktiviteye katılım, spor branşı, ebeveynlerin eğitim düzeyi ve yaşanılan yer gibi değişkenlerin ergenlerin saldırganlık düzeylerini etkilediği söylenebilir. Ancak, ergenlerin saldırganlık düzeylerini etkileyen faktörlerin daha iyi anlaşılabilmesi için daha kapsamlı ve geniş örneklemli çalışmaların yapılması önerilir.
Augmenting Automated Game Testing with Deep Reinforcement Learning
Creators: name: Bergdahl, Joakim
name: Gordillo, Camilo
name: Tollmar, Konrad
name: Gisslén, Linus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: General game testing relies on the use of human play testers, play test scripting, and prior knowledge of areas of interest to produce relevant test data. Using deep reinforcement learning (DRL), we introduce a self-learning mechanism to the game testing framework. With DRL, the framework is capable of exploring and/or exploiting the game mechanics based on a user-defined, reinforcing reward signal. As a result, test coverage is increased and unintended game play mechanics, exploits and bugs are discovered in a multitude of game types. In this paper, we show that DRL can be used to increase test coverage, find exploits, test map difficulty, and to detect common problems that arise in the testing of first-person shooter (FPS) games.
description: 4 pages, 6 figures, 2020 IEEE Conference on Games (CoG), 600-603
Disentangling Semantic-to-visual Confusion for Zero-shot Learning
Creators: name: Ye, Zihan
name: Hu, Fuyuan
name: Lyu, Fan
name: Li, Linyan
name: Huang, Kaizhu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Using generative models to synthesize visual features from semantic distribution is one of the most popular solutions to ZSL image classification in recent years. The triplet loss (TL) is popularly used to generate realistic visual distributions from semantics by automatically searching discriminative representations. However, the traditional TL cannot search reliable unseen disentangled representations due to the unavailability of unseen classes in ZSL. To alleviate this drawback, we propose in this work a multi-modal triplet loss (MMTL) which utilizes multimodal information to search a disentangled representation space. As such, all classes can interplay which can benefit learning disentangled class representations in the searched space. Furthermore, we develop a novel model called Disentangling Class Representation Generative Adversarial Network (DCR-GAN) focusing on exploiting the disentangled representations in training, feature synthesis, and final recognition stages. Benefiting from the disentangled representations, DCR-GAN could fit a more realistic distribution over both seen and unseen features. Extensive experiments show that our proposed model can lead to superior performance to the state-of-the-arts on four benchmark datasets. Our code is available at https://github.com/FouriYe/DCRGAN-TMM.
description: Accepted by IEEE TRANSACTIONS ON MULTIMEDIA (TMM) in 2021
Hyperfinite knots via the CJKLS invariant in the thermodynamic limit
Creators: name: Lopes, Pedro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25; 57M27

description: We set forth a definition of hyperfinite knots. Loosely speaking, these are limits of certain sequences of knots with increasing crossing number. These limits exist in appropriate closures of quotient spaces of knots. We give examples of hyperfinite knots. These examples stem from an application of the Thermodynamic Limit to the CJKLS invariant of knots.
description: 25 pages, 14 figures; references added to second version
Using Narrative Construction to Prepare the Ground for Hermeneutic Dialogue
Creators: name: Gagnon, Justin
Publisher: name: Journal of Applied Hermeneutics
Year: 2019

description: Hermeneutic research methodologists have recommended that when conducting interviews investigators should minimize the imposition of their pre-understandings on the conversation, as this would restrict the range of possible understandings that dialogue may produce. Instead, the phenomenon under investigation should determine the direction of conversation. This position paper argues that the iterative construction of a narrative enables increasingly focused, in-depth discussions with experts in the clearing where the interlocutors' shared horizons of understanding converge. Hermeneutic dialogue involves navigating one’s own pre-understanding and exploring new branches of possible understandings that emerge from conversation. This navigation demands reflexivity and adaptability, as well as an openness toward the complexity of a living understanding informed by a diversity of perspectives. To illustrate how narrative construction informs an increasingly refined understanding, and how this understanding subsequently frames dialogue with interview subjects, this paper draws on a historical case study of electronic medical records implementation policy.
description: Journal of Applied Hermeneutics, 2019
Interactions and magnetism in graphene boundary states
Creators: name: Wunsch, B.
name: Stauber, T.
name: Sols, F.
name: Guinea, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze interaction effects on boundary states of single layer graphene. Near a half filled band, both short and long-ranged interactions lead to a fully spin polarized configuration. In addition, the band of boundary states acquires a finite dispersion as function of the momentum parallel to the edge, induced by the interactions. Away from half filling the wavefunction develops charge correlations similar to those in a Wigner crystal, and the spin strongly alternates with the occupation of the boundary states. For certain fillings the ground state has a finite linear momentum, leading to the formation of persistent currents.
description: 5 pages, 4 figures
Η περί σωτηρίας του ανθρώπου διδασκαλία του αγίου Κυρίλλου Αλεξανδρείας
Creators: name: Γεωργόπουλος, Βασίλειος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Προπατορικό αμάρτημα
Πελάγιος
Επανθρώπηση
Original sin
Pelagius
Incarnation

description: Η διατριβή χωρίζεται σε τρία μέρη με επιμέρους κεφάλαια. Παρουσιάζεται η σωτηριολογία του αγ. Κυρίλλου Αλεξανδρείας στην αλληλοπεριχώρησή της με την ανθρωπολογία, την χριστολογία, το μυστήριο της εκκλησίας και τα έσχατα. Αναδεικνύεται το μυστήριο του Χριστού στο σχεδιασμό της Θείας Οικονομίας, το Προπατορικό Αμάρτημα ως ασθένειες, η κριτική του αγιου Κύριλλου στις ωριγένειες δοξασίες για την προϋπαρξη των ψυχών. Αξιολογούνται οι απόψεις του Πελαγίου, Ιουλιανού του Παραβάτη και της προτεσταντικής θρησκεϊκοστορικής σχολής. Γίνεται εκτενής αναφορά στις παλαιοδιαθηκικές θεοφάνειες. Στους τύπους και τα σύμβολα της Π.Δ. και τη θέση τους στην αντινεστοριανική επιχειρηματολογία του αγ. Κυρίλλου. Παρουσιάζεται το μυστήριο της σωτηρίας με κέντρο την ενανθρώπηση και την οικείωση του στο χώρο της εκκλησίας. Ολοκληρώνεται η διαπραγμάτευση του θέματος με αναφορά στην εσχατολογική φανέρωση και πληρότητα της σωτηρίας
OESense: Employing Occlusion Effect for In-ear Human Sensing
Creators: name: Ma, Dong
name: Ferlini, Andrea
name: Mascolo, Cecilia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Smart earbuds are recognized as a new wearable platform for personal-scale human motion sensing. However, due to the interference from head movement or background noise, commonly-used modalities (e.g. accelerometer and microphone) fail to reliably detect both intense and light motions. To obviate this, we propose OESense, an acoustic-based in-ear system for general human motion sensing. The core idea behind OESense is the joint use of the occlusion effect (i.e., the enhancement of low-frequency components of bone-conducted sounds in an occluded ear canal) and inward-facing microphone, which naturally boosts the sensing signal and suppresses external interference. We prototype OESense as an earbud and evaluate its performance on three representative applications, i.e., step counting, activity recognition, and hand-to-face gesture interaction. With data collected from 31 subjects, we show that OESense achieves 99.3% step counting recall, 98.3% recognition recall for 5 activities, and 97.0% recall for five tapping gestures on human face, respectively. We also demonstrate that OESense is compatible with earbuds' fundamental functionalities (e.g. music playback and phone calls). In terms of energy, OESense consumes 746 mW during data recording and recognition and it has a response latency of 40.85 ms for gesture recognition. Our analysis indicates such overhead is acceptable and OESense is potential to be integrated into future earbuds.
Η Θεολογία των ιερών εικόνων στην Ορθόδοξη Εκκλησιαστική Παράδοση και η λειτουργικανονική τεκμηρίωσή της
Creators: name: Μαυροσκά, Βασιλική Β.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Εικονομαχία
Λειτουργική πράξη
Iconoclasm

description: Η μελέτη στοχεύει στην παρουσίαση της ολοκληρωμένης συνέχειας της τιμής των εικόνων από την Ορθόδοξη Εκκλησία και στην οριοθέτηση της θεωρίας της εικονολογίας, μέσα από μία συνολική θεώρηση της ιστορίας της ορθόδοξης τέχνης. Μελετάται ο λειτουργικός της χαρακτήρας μέσα από τη συνολική βιβλική διδασκαλία, την πατερική ερμηνευτική και τις συνοδικές αποφάσεις. Οι πτυχές αυτές σε συνδυασμό με τη λειτουργική πράξη της Εκκλησίας ερμηνεύουν εξ' ολοκλήρου την ύπαρξη της χριστιανικής τέχνης και την τιμή των εικόνων. Αναφερόμαστε στη μορφή κατά το αρχαιοελληνικό κοσμοείδωλο και την πρωτοχριστιανική φιλοσοφική θεώρηση, καθώς και στην εξελικτική πορεία της εκκλησιαστικής καλλιτεχνικής έκφρασης. Προς ενίσχυση των πατερικών θέσεων, γίνεται διαχωρισμός ειδώλου και της εικόνας και ο διδακτικός ρόλος των εικόνων. Η εικαστική αποκάλυψη της ορθόδοξης πίστης αναλύεται μορφολογικά και διαφοροποιείται από τη φαινομενολογία της κοσμικής και δυτικής, αναγεννησιακής τέχνης, ενώ η μελέτη ολοκληρώνεται με την οργανική ένταξη της τέχνης στην ορθόδοξη λειτουργική πράξη
description: This research targets to present the total continuation of the honour of the icons in the Orthodox Church and to put the frames of the theory of iconology, within the overall theological history of the orthodox art. its liturgical character is studied through the biblical teaching, the interpretation of the Fathers and the synodical decisions. These aspects in connection with the liturgical act of the Church interpret the existence of the Christian art and the honour to the icons. We deal with the notion of image according with the ancient Greek ideology and the early Christian philosophical theought, as well as with the progressive route of the ecclesiastical artistic expression. A comparison between icon and idol is made and and icons' didactic role is presented. The artistic revelation of the orthodox faith is analyzed morphologically and differs from the phenomenology of the social, western art of the renaissance, while the research is completed with the accession of the art in the orthodox liturgical act
Critical wetting of a class of nonequilibrium interfaces: A mean-field picture
Creators: name: Santos, F. de los
name: Romera, E.
name: Hammal, O. Al
name: Munoz, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A self-consistent mean-field method is used to study critical wetting transitions under nonequilibrium conditions by analyzing Kardar-Parisi-Zhang (KPZ) interfaces in the presence of a bounding substrate. In the case of positive KPZ nonlinearity a single (Gaussian) regime is found. On the contrary, interfaces corresponding to negative nonlinearities lead to three different regimes of critical behavior for the surface order-parameter: (i) a trivial Gaussian regime, (ii) a weak-fluctuation regime with a trivially located critical point and nontrivial exponents, and (iii) a highly non-trivial strong-fluctuation regime, for which we provide a full solution by finding the zeros of parabolic-cylinder functions. These analytical results are also verified by solving numerically the self-consistent equation in each case. Analogies with and differences from equilibrium critical wetting as well as nonequilibrium complete wetting are also discussed.
description: 11 pages, 2 figures
Characterizing groupoid C*-algebras of non-Hausdorff étale groupoids
Creators: name: Exel, R.
name: Pitts, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 46L05, 46L45, 22A22, 46L55

description: Given a not-necessarily Hausdorff, topologically free, twisted étale groupoid $(G, L)$, we consider its "essential groupoid C*-algebra", denoted $C^*_{ess}(G, L)$, obtained by completing $C_c(G, L)$ with the smallest among all C*-seminorms coinciding with the uniform norm on $C_c(G^0)$. The inclusion of C*-algebras $(C_0(G^0), C^*_{ess}(G, L))$ is then proven to satisfy a list of properties characterizing it as what we call a "weak Cartan inclusion". We then prove that every weak Cartan inclusion $(A, B)$, with $B$ separable, is modeled by a topologically free, twisted étale groupoid, as above. In our second main result we give a necessary and sufficient condition for an inclusion of C*-algebras $(A, B)$ to be modeled by a twisted étale groupoid based on the notion of "canonical states". A simplicity criterion for $C^*_{ess}(G, L)$ is proven and many examples are provided.
description: Version accepted for publication
Frequency correlated photon generation at telecom band using silicon nitride ring cavities
Creators: name: Yin, Zhenghao
name: Sugiura, Kenta
name: Takashima, Hideaki
name: Okamoto, Ryo
name: Qiu, Feng
name: Yokoyama, Shiyoshi
name: Takeuchi, Shigeki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Frequency entangled photon sources are in high demand in a variety of optical quantum technologies, including quantum key distribution, cluster state quantum computation and quantum metrology. In the recent decade, chip-scale entangled photon sources have been developed using silicon platforms, offering robustness, large scalability and CMOS technology compatibility. Here, we report the generation of frequency correlated photon pairs using a 150-GHz silicon nitride ring cavity. First, the device is characterized for studying the phase matching condition during spontaneous four-wave mixing. Next, we evaluate the joint spectrum intensity of the generated photons and confirm the photon pair generation in a total of42 correlated frequency mode pairs, corresponding to a bandwidth of 51.25 nm. Finally, the experimental results are analyzed and the joint spectral intensity is quantified in terms of the phase matching condition.
description: 9 pages, 5 figures
Bayesian Semiparametric Estimation of Cancer-specific Age-at-onset Penetrance with Application to Li-Fraumeni Syndrome
Creators: name: Jun Shin, Seung
name: Yuan, Ying
name: C. Strong, Louise
name: Bojadzieva, Jasmina
name: Wang, Wenyi
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Virology
subject: Computational Biology

description: Penetrance, which plays a key role in genetic research, is defined as the proportion of individuals with the genetic variants (i.e., genotype) that cause a particular trait and who have clinical symptoms of the trait (i.e., phenotype). We propose a Bayesian semiparametric approach to estimate the cancer-specific age-at-onset penetrance in the presence of the competing risk of multiple cancers. We employ a Bayesian semiparametric competing risk model to model the duration until individuals in a high-risk group develop different cancers, and accommodate family data using family-wise likelihoods. We tackle the ascertainment bias arising when family data are collected through probands in a high-risk population in which disease cases are more likely to be observed. We apply the proposed method to a cohort of 186 families with Li-Fraumeni syndrome identified through probands with sarcoma treated at MD Anderson Cancer Center from 1944 to 1982.
Η επίδραση της ποιότητας του εδάφους σε οινοποιήσιμες ποικιλίες αμπέλου
Creators: name: Μπίλας, Γεώργιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Αμπελώνας
Vineyard

description: Η ποιότητα του εδάφους χρησιμοποιείται στην αξιολόγηση των εδαφικών συνθηκών και αποτελεί ένα σημαντικό εργαλείο στα χέρια των επιστημόνων που καλούνται να υποδείξουν μέτρα διαχείρισης στους αμπελώνες. Σκοπός της διατριβής ήταν η ανάπτυξη μεθοδολογίας για την αξιολόγηση της επίδρασης της ποιότητας του εδάφους στην παραγωγή σε αμπελώνα και το διαχωρισμό του σε ζώνες διαχείρισης με βάση τις εδαφικές συνθήκες. Το πείραμα έλαβε χώρα σε βιολογικό αμπελώνα ποικιλίας ξυνόμαυρο έκτασης 0,8ha όπου επιλέχθηκαν 35 θέσεις (24 φυτά) για τη δειγματοληψία εδάφους με διάνοιξη φρεατίων. Στις 35 μετρήθηκε η αντίσταση στη διείσδυση του εδάφους, συγκομίστηκε ο καρπός (μετρήθηκαν 6 παράμετροι στα σταφύλια), ενώ από 25 θέσεις πραγματοποιήθηκε πειραματική οινοποίηση (μετρήθηκαν 18 παράμετροι στον οίνο). Αναπτύχθηκε μέθοδος κατάλληλη για διαχείριση μεγάλου όγκου εδαφολογικών δεδομένων, με χρήση της ανάλυσης κυρίων συνιστωσών και της κανονικής συσχέτισης, ώστε οι διαχειριστικές πρακτικές να συμβαδίζουν με τις ανάγκες του εδάφους και των φυτών. Η μέθοδος μπορεί να χρησιμοποιηθεί και σε άλλες περιοχές και καλλιέργειες για κατευθυνόμενη δειγματοληψία και διαχείριση δεδομένων. Η αξιολόγηση της ποιότητας του εδάφους με βάση την προτεινόμενη μεθοδολογία αποτελεί άρρηκτο κομμάτι της αμπελουργίας ακριβείας για τη διαχείριση των αμπελώνων και την παραγωγή προϊόντων ποιότητας
description: Soil quality is employed for assessing soil conditions and constitutes an important tool in the hands of scientists that propose management measures for vineyards. The experiment took place in a vineyard (variety of xynomavro) located near village Filiria of Kilkis Prefecture in northern Greece. The objective of this work was to develop a method in order to assess the impact of soil quality on grapes and wine and to delineate management zones based on soil conditions. The area of the experimental vineyard covered 0,8ha and 35 sites (24 plants) were selected for soil sampling from 0 to 100cm (22 parameters were measured). In each site soil penetration was measured, grapes were collected (6 parameters were measured) and from 25 sites experimental wine was produced (18 parameters were measured). The method developed can beused for management of large soil data sets, using principal component analysis and canonical correlation, so that management practices are in line with soil and plant needs. The method can be used in other locations and crops for directed soil sampling and data management. Soil quality assessment based on the proposed method constitutes part of precision viticulture for vineyard management and high quality products
Combining Strong and Weak Gravitational Lensing in Abell 1689
Creators: name: Limousin, M.
name: Richard, J.
name: Jullo, E.
name: Kneib, J. -P.
name: Fort, B.
name: Soucail, G.
name: Elíasdóttir, A.
name: Natarajan, P.
name: Ellis, R. S.
name: Smail, I.
name: Czoske, O.
name: Smith, G. P.
name: Hudelot, P.
name: Bardeau, S.
name: Ebeling, H.
name: Egami, E.
name: Knudsen, K. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a reconstruction of the mass distribution of galaxy cluster Abell 1689 at z = 0.18 using detected strong lensing features from deep HST/ACS observations and extensive ground based spectroscopy. Earlier analyses have reported up to 32 multiply imaged systems in this cluster, of which only 3 were spectroscopically confirmed. In this work, we present a parametric strong lensing mass reconstruction using 24 multiply imaged systems with newly determined spectroscopic redshifts, which is a major step forward in building a robust mass model. In turn, the new spectroscopic data allows a more secure identification of multiply imaged systems. The resultant mass model enables us to reliably predict the redshifts of additional multiply imaged systems for which no spectra are currently available, and to use the location of these systems to further constrain the mass model. In particular, we have detected 5 strong galaxy-galaxy lensing systems just outside the Einstein ring region, further constraining the mass profile. Our strong lensing mass model is consistent with that inferred from our large scale weak lensing analysis derived using CFH12k wide field images. Thanks to a new method for reliably selecting a well defined background lensed galaxy population, we resolve the discrepancy found between the strong and weak lensing mass models reported in earlier work. [ABRIDGED]
description: ApJ in press, 668, 643. Final article with figures and online data available at http://archive.dark-cosmology.dk/
The Lieb-Robinson light cone for power-law interactions
Creators: name: Tran, Minh C.
name: Guo, Andrew Y.
name: Baldwin, Christopher L.
name: Ehrenberg, Adam
name: Gorshkov, Alexey V.
name: Lucas, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Lieb-Robinson theorem states that information propagates with a finite velocity in quantum systems on a lattice with nearest-neighbor interactions. What are the speed limits on information propagation in quantum systems with power-law interactions, which decay as $1/r^α$ at distance $r$? Here, we present a definitive answer to this question for all exponents $α>2d$ and all spatial dimensions $d$. Schematically, information takes time at least $r^{\min\{1, α-2d\}}$ to propagate a distance~$r$. As recent state transfer protocols saturate this bound, our work closes a decades-long hunt for optimal Lieb-Robinson bounds on quantum information dynamics with power-law interactions.
Μελέτη της διαφοροποίησης και της επιβίωσης στελεχιαίων προγονικών κυττάρων του ΚΝΣ παρουσία κυτοκινών in vitro
Creators: name: Λαγουδάκη, Ρόζα Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Κυτταροκίνη
Αποπτωτικός θάνατος
Νευροτροφικός παράγοντας
Cytocine
Apoptotic death
Neurotrophic factor

description: Προσφάτως προτάθηκε η μεταμόσχευση των στελεχιαίων προγονικών κυττάρων(στ.π.κ.) ως θεραπευτικό μέσο για τη σκλήρυνση κατά πλάκας, χρόνιας φλεγμονώδους απομυελινωτικής νόσου : ένα πρακτικό πρόβλημα που προκύπτει κατά τη μεταμόσχευση είναι ξ βιωσιμότητα και η διαφοροποίηση των κυττάρων σε περιβάλλον που φλεγμαίνει. Στην παρούσα μελέτη, μελετήθηκαν τα στ.π.κ. παρουσία των κυτοκινών IFN.γ, IL4, TNFa και TGF.B in vitro, διότι παράγονται τοπικά στη θέση μεταμόσχευσης κυττάρων σε ιστούς, ενώ επιπλέον είναι πολύ καλά μελετημένος ο σημαντικός ρόλος που παίζουν στην παθογένεια της ΣκΠ. Καλλιεργήθηκαν στ.π.κ. από νεογνά επίμυων και χρησιμοποιήθηκαν οι μέθοδοι ΜΤΤ για τη μέτρηση της πολλαπλασιαστικής ικανότητας των κυττάρων, ανοσοκυτταροχημεία για τον εντοπισμό αντιγόντων διαφοροποίησης και απόπτωσης, Real-time PcR για τη συγκριτική ποσοτικοποίηση της έκφρασης των αποπτωτικών γονιδίων. Τα στ.π.κ. του ΚΝΣ είναι ικανά να διαφοροποιηθούν σε αστροκύτταρα, αλιγοδεντροκύτταρα και νευρώνες. Η παρουσία προφλεγμονωδών κυτταροκινών προκαλεί μείωση της πολλαπλασιαστικής ικανόητητας των κυττάρων, ενώ η αντιφλεγμονώδης κυτταροκίνη TGFβ αυξάνει ή μειώνει τα κύτταρα ανάλογα της συγκέντρωσης της. Η μείωση αυτή αποδίδεται σε κυτταρικό θάνατο μέσω απόπτωσης. Τα κύτταρα αποδείχθηκε ότι προσπαθούν να αντισταθούν στον κυτταρικό θάνατο εκφράζοντας νευροτροφικούς παράγοντες
description: During the last years, research on treatment of MS has been focused on the transplantation of Neural Stem Cells(NSC). The main problem during transplantation of NSC is their survival in an inflammatory environment, such as the one present in the CNS during the disease. In our study we tested NSC in the presence of the cytocines INF.γ IL4, TNF-a and TGF-β, which are produced locally in the area of transplantation and their role in the pathogenesiw of neurological diseases is well defined. NSC were extracted and cultured from cerebral hemispheres of CSEblack/6 mice. We used MTT assay for the measurement of proliferation of NSC, immunocytochemistry for the expression of apoptotic markers. NSC are able to differentiate into astrocytes, oligodendrocytes and neurones. In the presence of pro-inflammatory cytokines there is a marked reduction of the prolifaration rate, whereas in the presence of anti-inflammatory cytokines TGF-β there is reduction or increase depending on its concentration in culture. The cell reduction is attributed to apoptotic cell death. In the presence of IFN.γ or IL-4 both apoptic pathways are met, whereas in the presence of TNF-a there is an increased apoptotic death through the mitochondrial pathway and not through the death receptor one. It has been proved that the cells are trying to react to the cell death by expressing neurotropic factors
Symmetry-Driven Spin-Wave Gap Modulation in Nanolayered SrRuO3/SrTiO3 Heterostructures: Implications for Spintronic Applications
Creators: name: Jeong, Seung Gyo
name: Kim, Hyeonbeom
name: Hong, Sung Ju
name: Suh, Dongseok
name: Choi, Woo Seok
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A strong correlation between magnetic interaction and topological symmetries leads to unconventional magneto-transport behavior. Weyl fermions induce topologically protected spin-momentum locking, which is closely related to spin-wave gap formation in magnetic crystals. Ferromagnetic SrRuO3, regarded as a strong candidate for Weyl semimetal, inherently possesses a nonzero spin-wave gap owing to its strong magnetic anisotropy. In this paper, we propose a method to control the spin-wave dynamics by nanolayer designing of the SrRuO3/SrTiO3 superlattices. In particular, the six-unit-cell-thick SrRuO3 layers within the superlattices undergo a phase transition in crystalline symmetry from orthorhombic to tetragonal, as the thickness of the SrTiO3 layers is modulated with atomic-scale precision. Consequently, the magnetic anisotropy, anomalous Hall conductivity, and spin-wave gap could be systematically manipulated. Such customization of magnetic anisotropy via nanoscale heterostructuring offers a novel control knob to tailor the magnon excitation energy for future spintronic applications, including magnon waveguides and filters. Our nanolayer approach unveils the important correlation between the tunable lattice degrees of freedom and spin dynamics in topologically non-trivial magnetic materials.
description: 25 page
Ergodicity in Natural Earthquake Fault Networks
Creators: name: Tiampo, K. F.
name: Rundle, J. B.
name: Klein, W.
name: Holliday, J.
name: Martins, J. S. Sa
name: Ferguson, C. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Numerical simulations have shown that certain driven nonlinear systems can be characterized by mean-field statistical properties often associated with ergodic dynamics [C.D. Ferguson, W. Klein, and J.B. Rundle, Phys. Rev. E 60, 1359 (1999); D. Egolf, Science 287, 101 (2000)]. These driven mean-field threshold systems feature long-range interactions and can be treated as equilibrium-like systems with dynamics that are statistically stationary over long time intervals. Recently the equilibrium property of ergodicity was identified in an earthquake fault system, a natural driven threshold system, by means of the Thirumalai-Mountain (TM) fluctuation metric developed in the study of diffusive systems [K.F. Tiampo, J.B. Rundle, W. Klein, J.S. Sa Martins, and C. D. Ferguson, Phys. Rev. Lett. 91, 238501 (2003)]. In this work we analyze the seismicity of three naturally-occurring earthquake faults networks from a variety of tectonic settings in an attempt to investigate the range of applicability of effective ergodicity, using the TM metric and other, related statistics. Results suggest that, once variations in the catalog data resulting from technical and network issues are accounted for, all of these natural earthquake systems display stationary periods of metastable equilibrium and effective ergodicity that are disrupted by large events. We conclude that a constant rate of events is an important prerequisite for these periods of punctuated ergodicity, and that while the level of temporal variability in the spatial statistics is the controlling factor in the ergodic behavior of seismic networks, no single statistic is sufficient to ensure quantification of ergodicity. Specifically, we demonstrate that stationarity, while a necessary condition, is not sufficient to ensure ergodicity in fault systems.
description: Resubmitted to Phys. Rev. E, October 2006
Synchronization in Weighted Uncorrelated Complex Networks in a Noisy Environment: Optimization and Connections with Transport Efficiency
Creators: name: Korniss, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Motivated by synchronization problems in noisy environments, we study the Edwards-Wilkinson process on weighted uncorrelated scale-free networks. We consider a specific form of the weights, where the strength (and the associated cost) of a link is proportional to $(k_{i}k_{j})^β$ with $k_{i}$ and $k_{j}$ being the degrees of the nodes connected by the link. Subject to the constraint that the total network cost is fixed, we find that in the mean-field approximation on uncorrelated scale-free graphs, synchronization is optimal at $β^{*}$$=$-1. Numerical results, based on exact numerical diagonalization of the corresponding network Laplacian, confirm the mean-field results, with small corrections to the optimal value of $β^{*}$. Employing our recent connections between the Edwards-Wilkinson process and resistor networks, and some well-known connections between random walks and resistor networks, we also pursue a naturally related problem of optimizing performance in queue-limited communication networks utilizing local weighted routing schemes.
description: Papers on related research can be found at http://www.rpi.edu/~korniss/Research/