cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Macroprudential policies and bank risk evidence from Vietnam
Creators: name: Thu, Hang
name: Pham, Linh Hong
name: Ta, Huyen Thanh
name: Nguyen, Huong Thi Diem
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: This paper examines the impact of macroprudential policies (MPP) on reducing risks at commercial banks (CBs) in Vietnam. In the paper, the authors use secondary data collected from the financial reports of 29 CBs in Vietnam during 2009-2023 to form an unbalanced panel data set and apply the GMM model to evaluate the impact of macroprudential policies on risks at these CBs. The research findings indicate that these policies generally effectively reduce risks at CBs. Additionally, when multiple instruments are combined, they have a more substantial impact. Based on this, the authors provide several recommendations to enhance the effectiveness of macroprudential policies and mitigate risks at Vietnamese CBs. This study provides comprehensive empirical evaluations of the effectiveness of macroprudential policies in reducing bank risk in Vietnam over the period 2009–2023. By constructing a novel macroprudential policy index and applying a dynamic GMM model to an unbalanced panel of 29 commercial banks, the research offers insights into how credit-, capital-, and liquidity-related tools contribute to financial stability in an emerging market context. The study has implications for the design and implementation of macroprudential frameworks not only in Vietnam but also across other emerging financial systems striving to ensure banking sector resilience.
Predictions of Dynamic Behavior Under Pressure for Two Scenarios to Explain Water Anomalies
Creators: name: Kumar, Pradeep
name: Franzese, Giancarlo
name: Stanley, H. Eugene
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using Monte Carlo simulations and mean field calculations for a cell model of water we find a dynamic crossover in the orientational correlation time $τ$ from non-Arrhenius behavior at high temperatures to Arrhenius behavior at low temperatures. This dynamic crossover is independent of whether water at very low temperature is charaterized by a ``liquid-liquid critical point'' or by the ``singularity free'' scenario. We relate $τ$ to fluctuations of hydrogen bond network and show that the crossover found for $τ$ for both scenarios is a consequence of the sharp change in the average number of hydrogen bonds at the temperature of the specific heat maximum. We find that the effect of pressure on the dynamics is strikingly different in the two scenarios, offering a means to distinguish between them.
description: 10 Pages, 4 figures
Representing Knowledge about Norms
Creators: name: Kayser, Daniel
name: Nouioua, Farid
Publisher: name: arXiv
Year: 2006
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Norms are essential to extend inference: inferences based on norms are far richer than those based on logical implications. In the recent decades, much effort has been devoted to reason on a domain, once its norms are represented. How to extract and express those norms has received far less attention. Extraction is difficult: as the readers are supposed to know them, the norms of a domain are seldom made explicit. For one thing, extracting norms requires a language to represent them, and this is the topic of this paper. We apply this language to represent norms in the domain of driving, and show that it is adequate to reason on the causes of accidents, as described by car-crash reports.
Deciphering Social Opinion Polarization Towards Political Event Based on Content and Structural Analysis
Creators: name: Alamsyah, Andry
name: Rochmah, Wachda Yuniar
name: Nurnafia, Arina Nahya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: J.4
subject: 00-XX

description: There are some shreds of evidence that social opinion polarization leads to the breakup of the relationship, some in the scale of small communities, but others can divide large organizations or even a nation. The legacy methodology to answer the root cause of opinion polarization in the society commonly use random sampling or questionnaire-based approach, which considered expensive in term of time and money. On the contrary, the opportunity to employ big data approach using social media data provides a rich source to investigate several questions, such as: how social opinion polarization formed, dynamic social network mechanisms during time-windows observation, identification of dominant actors and communities. The power of the big data approach lies in the number of data analyzed, where the more data involved in the process, the more accurate to describe the population condition. Today, computing power is no longer become an obstacle to process large-scale data, thus the observation of the social opinion polarization process is possible.
description: 17 pages, 23 figures, 4 tables
Αντιλήψεις των εκπαιδευτικών για τις πολιτισμικές διαφορές, το ρόλο τους στη σχολική ζωή και στην ακαδημαϊκή πορεία των μαθητών/τριών
Creators: name: Κουριώτη, Μαρία-Ραφαέλα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Πολυπολιτισμικότητα
Εκπαιδευτικοί
Ποιοτική έρευνα
Multiculturalism
Teachers
Qualitative research

description: Στην παρούσα εργασία παρουσιάζουμε μία ποιοτική έρευνα, σκοπός της οποίας ήταν να διερευνήσει τις αντιλήψεις, να περιγράψει τις εμπειρίες και να ερμηνεύσει τις στάσεις εκπαιδευτικών της πρωτοβάθμιας εκπαίδευσης που σχετίζονται με την πολυπολιτισμικότητα στην εκπαίδευση. Για την εξυπηρέτηση του συγκεκριμένου στόχου επιλέξαμε την ερευνητική στρατηγική της ποιοτικής μελέτης με βασική τεχνική την ημιδομημένη συνέντευξη. Πιο αναλυτικά, στο πρώτο μέρος, παρουσιάζεται η σχετική με τις αντιλήψεις, στάσεις και πρακτικές των εκπαιδευτικών θεωρητική και ερευνητική παραγωγή. Στο δεύτερο μέρος, παρουσιάζονται τα αποτελέσματα της έρευνας που έγινε το τρέχον σχολικό έτος (2019-20). Στην έρευνα πήραν μέρος 32 εκπαιδευτικοί της πρωτοβάθμιας εκπαίδευσης από διάφορους δήμους της Ελλάδας. Σύμφωνα με τα ευρήματα της έρευνάς μας, οι περισσότεροι συμμετέχοντες φαίνεται πως έχουν επίγνωση των διαστάσεων της πολυπολιτισμικότητας και αναγνωρίζουν την κρισιμότητα του ρόλου τους στην εκπαίδευση των πολιτισμικά ανομοιογενών τάξεων.
description: In the present work we present a qualitative research, whose purpose was to explore perceptions, to describe experiences and to interpret the attitudes of primary school teachers, related to multiculturalism in education. To serve this purpose, we chose the research strategy of the qualitative study with the semi-structured interview as the basic technique. The first part presents in more detail the theoretical and research production related to the perceptions and practices of teachers. The second part presents the results of the research conducted in the current school year (2019-20). The research was attended by 32 primary school teachers from various municipalities in Greece. According to our research findings, most participants seem to be aware of the dimensions of multiculturalism and recognize the criticality of their role in educating culturally heterogeneous classes.
Temperature effects on the nuclear symmetry energy and symmetry free energy with an isospin and momentum dependent interaction
Creators: name: Xu, Jun
name: Chen, Lie-Wen
name: Li, Bao-An
name: Ma, Hong-Ru
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Within a self-consistent thermal model using an isospin and momentum dependent interaction (MDI) constrained by the isospin diffusion data in heavy-ion collisions, we investigate the temperature dependence of the symmetry energy $E_{sym}(ρ, T)$ and symmetry free energy $F_{sym}(ρ, T) $ for hot, isospin asymmetric nuclear matter. It is shown that the symmetry energy $E_{sym}(ρ, T)$ generally decreases with increasing temperature while the symmetry free energy $F_{sym}(ρ, T)$ exhibits opposite temperature dependence. The decrement of the symmetry energy with temperature is essentially due to the decrement of the potential energy part of the symmetry energy with temperature. The difference between the symmetry energy and symmetry free energy is found to be quite small around the saturation density of nuclear matter. While at very low densities, they differ significantly from each other. In comparison with the experimental data of temperature dependent symmetry energy extracted from the isotopic scaling analysis of intermediate mass fragments (IMF's) in heavy-ion collisions, the resulting density and temperature dependent symmetry energy $E_{sym}(ρ, T) $ is then used to estimate the average freeze-out density of the IMF's.used to estimate the average freeze-out density of the IMF's.
description: 9 pages, 7 figures, 1 figure added to show the temperature dependence of the potential and kinetic parts of the symmetry energy. Revised version to appear in PRC
CHUQURLASHTIRILGAN TAYYORGARLIK BOSQICHIDA YOSH KARATECHILARNING TEZKOR-KUCH QOBILIYATINI VA TEXNIK TAYYORGARLIGINI RIVOJLANTIRISH
Creators: name: Meyliqulova, Maftuna
Publisher: name: Zenodo
Year: 2024

description: Mа’lumki, spоrtchilаrning yuqоri nаtijаlаrgа erishishi ulаrning jismоniy vа tехnik tаyyorgаrliklаri dаrаjаsigа bоg′liq. Bugungi kundа bаrchа o′tkаzilgаn tаdqiqоt ishlаridа yosh karatechilаr tоmоnidаn musоbаqа mаshqlаrini tехnik mаhоrаt bilаn аmаlgа оshirishni tаkоmillаshtirishdа kоmplеks yondаshuv uslublаridаn fоydаlаnish tаvsiya etilgаn.
Margin Preserving Self-paced Contrastive Learning Towards Domain Adaptation for Medical Image Segmentation
Creators: name: Liu, Zhizhe
name: Zhu, Zhenfeng
name: Zheng, Shuai
name: Liu, Yang
name: Zhou, Jiayu
name: Zhao, Yao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: To bridge the gap between the source and target domains in unsupervised domain adaptation (UDA), the most common strategy puts focus on matching the marginal distributions in the feature space through adversarial learning. However, such category-agnostic global alignment lacks of exploiting the class-level joint distributions, causing the aligned distribution less discriminative. To address this issue, we propose in this paper a novel margin preserving self-paced contrastive Learning (MPSCL) model for cross-modal medical image segmentation. Unlike the conventional construction of contrastive pairs in contrastive learning, the domain-adaptive category prototypes are utilized to constitute the positive and negative sample pairs. With the guidance of progressively refined semantic prototypes, a novel margin preserving contrastive loss is proposed to boost the discriminability of embedded representation space. To enhance the supervision for contrastive learning, more informative pseudo-labels are generated in target domain in a self-paced way, thus benefiting the category-aware distribution alignment for UDA. Furthermore, the domain-invariant representations are learned through joint contrastive learning between the two domains. Extensive experiments on cross-modal cardiac segmentation tasks demonstrate that MPSCL significantly improves semantic segmentation performance, and outperforms a wide variety of state-of-the-art methods by a large margin.
description: This manuscript has been accepted by by IEEE JBHI and the code is available in https://github.com/TFboys-lzz/MPSCL
Tidal tails around globular clusters. Are they a good tracer of cluster orbits?
Creators: name: Montuori, M.
name: Capuzzo-Dolcetta, R.
name: Di Matteo, P.
name: Lepinette, A.
name: Miocchi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of detailed N-body simulations of clusters moving in a realistic Milky Way (MW) potential. The strong interaction with the bulge and the disk of the Galaxy leads to the formation of tidal tails, emanating from opposite sides of the cluster. Some characteristic features in the morphology and orientation of these streams are recognized and intepreted. The tails have a complex morphology, in particular when the cluster approaches its apogalacticon, showing multiple ``arms'' in remarkable similarity to the structures observed around NGC 288 and Willman 1. Actually, the tails are generally good tracers of the cluster path quite far from the cluster center (>7--8 tidal radii), while on the smaller scale they are mainly pointing in the direction of the Galaxy center. In particular, the orientation of the inner part of the tails is highly correlated to the cluster orbital phase and to the local orbital angular acceleration. This implies that, in general, the orbital path cannot be estimated directly from the orientation of the tails, unless a sufficient large field around the cluster is available.
description: Latex file in the AASTEX standard; 15 pages, 8 figures, 3 tables. Paper accepted on dec. 31 2006 for publication on ApJ, main journal
A comparative study of Arabic and Japanese
Creators: name: Ellabban, Mona A.
Publisher: name: University of British Columbia
Year: 2008

description: This thesis introduces and compares honorific systems, number, and gender of Arabic and Japanese. One of the purposes of this thesis is to introduce Japanese and Arabic from the viewpoints of each other. It is true that research has been done about each of them separately, but not much has been done about them together. Thus, the topic of my thesis might be considered new to Japanese and Arabic linguistics. Another purpose of this thesis is to be beneficial for both instructors and students of Arabic and Japanese, because it is always helpful to know about the language one is learning and/or teaching, as well as its culture. I have hypothesized that the Japanese honorific system would be confusing for Arab students because it is more complicated than the Arabic one. That is, Japanese honorific system is lexico-grammatical, while Arabic honorific system is mainly lexical. I have examined that, the Japanese honorific system is hard for Arabs due to the following reasons: having various giving and receiving verbs, honorific and humble forms for verbs, neutral and honorific ones for some nouns, honorific adjectives, various kinds of imperatives, different levels of politeness, Japanese [in-group]/[out-group] social deixis and not having a subject present in Japanese sentence most of the time. On the other hand, I have also pointed out that, there are some difficulties for Arabs when learning Japanese number and gender. They are: the ambiguity of Japanese nouns, verbs, and adjectives regarding number and gender, the use of different counters depending upon the objects to be counted, the mixing of Sino-Japanese numerals with those of Japanese origin, and the distinction between male and female speeches. I have also hypothesized that learning Arabic number and gender would be confusing for Japanese students. There are three numbers (singular, dual, and plural) and two genders (masculine and feminine) in Arabic. Number and gender are marked in Arabic nouns and verbs requiring lots of inflections, and this is not the case in Japanese. I have examined that having Arabic broken plural that is unpredictable makes Arabic number very confusing for Japanese, as well as having some exceptions to the rule of agreement in number and gender between subjects and verbs. Also, what makes it hard to learn Arabic gender, is having some nouns of tropical gender and some others of common gender and the difficulties of distinguishing between the two, results in applying wrong agreements of subject/verb and noun/adjective agreements. The Arabic honorific system, on the other hand, is not very hard for Japanese students to learn except the use of plural forms and the religious influence on the language.
Error-and-Erasure Decoding of Product and Staircase Codes
Creators: name: Rapp, Lukas
name: Schmalen, Laurent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: High-rate product codes (PCs) and staircase codes (SCs) are ubiquitous codes in high-speed optical communication achieving near-capacity performance on the binary symmetric channel. Their success is mostly due to very efficient iterative decoding algorithms that require very little complexity. In this paper, we extend the density evolution (DE) analysis for PCs and SCs to a channel with ternary output and ternary message passing, where the third symbol marks an erasure. We investigate the performance of a standard error-and-erasure decoder and of its simplification using DE. The proposed analysis can be used to find component code configurations and quantizer levels for the channel output. We also show how the use of even-weight BCH subcodes as component codes can improve the decoding performance at high rates. The DE results are verified by Monte-Carlo simulations, which show that additional coding gains of up to 0.6 dB are possible by ternary decoding, at only a small additional increase in complexity compared to traditional binary message passing.
Views of medical students regarding the development of medical professionalism in active learning class
Creators: name: Areerat Siripongpan
name: Sahattaya Niyamosot
Publisher: name: F1000 Research Limited
Year: 2024

description: Professionalism for the twenty-first century presents challenges not only to adapting the course to changing societal values but also to adjusting to shifting social ideals. In medical education, professionalism education and assessment are still crucial topics. Nonetheless, improving medical professionalism is not easy. In this study, we explored the level of medical professionalism and students' perspectives on traditional teaching (academic year 2021), learning (academic year 2022; watch movie) and proactive teaching (academic year 2023; watch movie, role model and case scenario).



This is a cross-sectional survey conducted at Suranaree University of Technology, Thailand. Participants were 35 medical students, who are fourth-year medical students in psychiatry’s rotation, collecting data between October 2021 and December 2023. Medical professionalism was measured by using a questionnaire for the Medical Professionalism Scale (MPS), which was scored according to a Likert scale and open-ended questions for each participant in the learning activity. The statistical methods used to analyse the data included mean, standard deviation, Pair Sample t-test, and Pearson Correlation.



4 of the 6 focuses of MPS are as follows: 1) altruism, 2) accountability, 3) duty, and 4) respect for others are significantly increased from the pre- to post-test (p < 0.01) only in the academic year 2023. Furthermore, 4) Respect for others was identified as the highest post-scored trait, while 5) Honor and integrity, and 6) Excellence were the lower and lowest post-scored domains of medical professionalism, respectively. One of the students mentioned that "active learning makes me understand and know the importance of having medical professionalism."



Medical students have significantly different views of certain attributes of professionalism. Respect for others is a characteristic of Asian culture. There are ways to increase levels of medical professionalism, such as by being a role model and being involved in the teaching and learning process.



Medical students should have lifelong learning opportunities where learning is not only in the classroom or books but can also be learned through watching movies, seeing a good role model, a case scenario, or participation in teaching and learning. It will help them develop their medical professionalism.
Evidence for local spots of viscous electron flow in graphene at moderate mobility
Creators: name: Samaddar, Sayanti
name: Strasdas, Jeff
name: Janßen, Kevin
name: Just, Sven
name: Johnsen, Tjorven
name: Wang, Zhenxing
name: Uzlu, Burkay
name: Li, Sha
name: Neumaier, Daniel
name: Liebmann, Marcus
name: Morgenstern, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Dominating electron-electron scattering enables viscous electron flow exhibiting hydrodynamic current density patterns such as Poiseuille profiles or vortices. The viscous regime has recently been observed in graphene by non-local transport experiments and mapping of the Poiseuille profile. Here, we probe the current-induced surface potential maps of graphene field effect transistors with moderate mobility using scanning probe microscopy at room temperature. We discover micron-sized large areas appearing close to charge neutrality that show current induced electric fields opposing the externally applied field. By estimating the local scattering lengths from the gate dependence of local in-plane electric fields, we find that electron-electron scattering dominates in these areas as expected for viscous flow. Moreover, we suppress the inverted fields by artificially decreasing the electron-disorder scattering length via mild ion bombardment. These results imply that viscous electron flow is omnipresent in graphene devices, even at moderate mobility.
description: 89 pages, 24 figures, published in Nano Letters
Enskog Theory for Polydisperse Granular Mixtures. I. Navier-Stokes order Transport
Creators: name: Garzo, V.
name: Dufty, J. W.
name: Hrenya, C. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A hydrodynamic description for an $s$-component mixture of inelastic, smooth hard disks (two dimensions) or spheres (three dimensions) is derived based on the revised Enskog theory for the single-particle velocity distribution functions. In this first portion of the two-part series, the macroscopic balance equations for mass, momentum, and energy are derived. Constitutive equations are calculated from exact expressions for the fluxes by a Chapman-Enskog expansion carried out to first order in spatial gradients, thereby resulting in a Navier-Stokes order theory. Within this context of small gradients, the theory is applicable to a wide range of restitution coefficients and densities. The resulting integral-differential equations for the zeroth- and first-order approximations of the distribution functions are given in exact form. An approximate solution to these equations is required for practical purposes in order to cast the constitutive quantities as algebraic functions of the macroscopic variables; this task is described in the companion paper.
description: 36 pages, to be published in Phys. Rev. E
Observer Path Planning for Maximum Information
Creators: name: Kaya, C. Yalçın
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49K15, 49M25, 65K99

description: This paper is concerned with finding an optimal path for an observer, or sensor, moving at a constant speed, which is to estimate the position of a stationary target, using only bearing angle measurements. The generated path is optimal in the sense that, along the path, information, and thus the efficiency of a potential estimator employed, is maximized. In other words, an observer path is deemed optimal if it maximizes information so that the location of the target is estimated with smallest uncertainty, in some sense. We formulate this problem as an optimal control problem maximizing the determinant of the Fisher information matrix, which is one of the possible measures of information. We derive analytical results for optimality using the Maximum Principle. We carry out numerical experiments and discuss the multiple (locally) optimal solutions obtained. We check graphically that the necessary conditions of optimality are verified by the numerical solutions. Finally we provide a comprehensive list of possible extensions for future work.
description: 17 pages, 6 figures
The Flare-Activity of 2MASSJ16111534-1757214 in the Upper Scorpius association
Creators: name: Guenther, E. W.
name: Woeckel, D.
name: Chaturvedi, P.
name: Kumar, V.
name: Srivastava, M. K.
name: Muheki, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Flares are known to play an important role for the evolution of the atmospheres of young planets. In order to understand the evolution of planets, it is thus important to study the flare-activity of young stars. This is particularly the case for young M-stars, because they are very active. We study photometrically and spectroscopically the highly active M-star 2MASS J16111534-1757214. We show that it is a member of the Upper Sco OB association, which has an age of 5-10 Myrs. We also re-evaluate the status of other bona-fide M-stars in this region and identify 42 members. Analyzing the K2-light curves, we find that 2MASS J16111534-1757214 has, on average, one super-flare with E > 1.0E35 erg every 620 hours, and one with E >1.0E34 erg every 52 hours. Although this is the most active M-star in the Upper Sco association, the power-law index of its flare-distribution is similar to that of other M-stars in this region. 2MASS J16111534-1757214 as well as other M-stars in this region show a broken power-law distribution in the flare-frequency diagram. Flares larger than E >3E34 erg have a power-law index beta=-1.3+/-0.1 and flares smaller than that beta=-0.8+/-0.1. We furthermore conclude that the flare-energy distribution for young M-stars is not that different from solar-like stars.
description: 14 pages, 12 figures
Enskog Theory for Polydisperse Granular Mixtures II. Sonine Polynomial Approximation
Creators: name: Garzo, V.
name: Hrenya, C. M.
name: Dufty, J. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The linear integral equations defining the Navier-Stokes (NS) transport coefficients for polydisperse granular mixtures of smooth inelastic hard disks or spheres are solved by using the leading terms in a Sonine polynomial expansion. Explicit expressions for all the NS transport coefficients are given in terms of the sizes, masses, compositions, density and restitution coefficients. In addition, the cooling rate is also evaluated to first order in the gradients. The results hold for arbitrary degree of inelasticity and are not limited to specific values of the parameters of the mixture. Finally, a detailed comparison between the derivation of the current theory and previous theories for mixtures is made, with attention paid to the implication of the various treatments employed to date.
description: 26 pages, to be published in Phys. Rev. E
Measurement of Optical Response of a Detuned Resonant Sideband Extraction Interferometer
Creators: name: Miyakawa, Osamu
name: Ward, Robert
name: Adhikari, Rana
name: Evans, Matthew
name: Abbott, Benjamin
name: Bork, Rolf
name: Busby, Daniel
name: Heefner, Jay
name: Ivanov, Alexander
name: Smith, Michael
name: Taylor, Robert
name: Vass, Stephen
name: Weinstein, Alan
name: Varvella, Monica
name: Kawamura, Seiji
name: Kawazoe, Fumiko
name: Sakata, Shihori
name: Mow-Lowry, Conor
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We report on the optical response of a suspended-mass detuned resonant sideband extraction (RSE) interferometer with power recycling. The purpose of the detuned RSE configuration is to manipulate and optimize the optical response of the interferometer to differential displacements (induced by gravitational waves) as a function of frequency, independently of other parameters of the interferometer. The design of our interferometer results in an optical gain with two peaks: an RSE optical resonance at around 4 kHz and a radiation pressure induced optical spring at around 41 Hz. We have developed a reliable procedure for acquiring lock and establishing the desired optical configuration. In this configuration, we have measured the optical response to differential displacement and found good agreement with predictions at both resonances and all other relevant frequencies. These results build confidence in both the theory and practical implementation of the more complex optical configuration being planned for Advanced LIGO.
description: 6 pages, 4 figures, for submission to Phys Rev Letters
Competing magnetic interactions and magnetocaloric effect in Ho$_5$Sn$_3$
Creators: name: Mondal, Suman
name: Yadav, Pushpendra
name: Sarkar, Anan Bari
name: Dutta, Prabir
name: Giri, Saurav
name: Agarwal, Amit
name: Majumdar, Subham
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The rare-earth intermetallic compound Ho$_5$Sn$_3$ demonstrates fascinating magnetic properties which include temperature-driven multiple magnetic transitions and field driven metamagnetism. We address the magnetic character of this exciting compound through a combined experimental and theoretical studies. Ho$_5$Sn$_3$ orders antiferromagnetically below $~28$ K, and shows further spin reorientation transitions at 15 K and 12 K. We observe a sizable amount of low-temperature magnetocaloric effect in Ho$_5$Sn$_3$ with a maximum value of entropy change $ΔS$ = -9.5 JKg$^{-1}$K$^{-1}$ for an applied field of $H$ = 50 kOe at around 30 K. The field hysteresis is almost zero above 15 K where magneto-caloric effect is important. Interestingly, $ΔS$ is found to change its sign from positive to negative as the temperature is increased above about 8 K, which can be linked to the multiple spin reorientation transitions. The signature of the metamagnetism is visible in the $ΔS$ versus $H$ plot. The magnetic ground-state, obtained from the density functional theory based calculation, is susceptible to the effective Coulomb interaction ($U_{\rm eff}$) between electrons. Depending upon the value of $U_{\rm eff}$, the ground-state can be ferromagnetic or antiferromagnetic. The compound shows large relaxation (14\% change in magnetization in 60 min) in the field cooled state with a logarithmic time variation, which may be connected to the competing magnetic ground-states observed in our theoretical calculations. The competing magnetic ground-states is also evident from the small value of the paramagnetic Curie-Weiss temperature.
description: 10 pages, 6 figures
Constraining Universal Extra Dimensions through B decays
Creators: name: De Fazio, Fulvia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the exclusive rare $B \to K^{(*)} \ell^+ \ell^-$, $B \to K^{(*)} ν\bar ν$ and $B \to K^* γ$ decays in the Applequist-Cheng-Dobrescu model, an extension of the Standard Model in presence of universal extra dimensions. In the case of a single universal extra dimension, we study the dependence of several observables on the compactification parameter 1/R, and discuss whether the hadronic uncertainty due to the form factors obscures or not such a dependence. We find that, using present data, it is possible in many cases to put a sensible lower bound to 1/R, the most stringent one coming from $B \to K^* γ$.
description: Invited talk at "Continuous Advances in QCD 2006", May 11-14 2006, Minneapolis (Minnesota). LaTex, 7 pages, 8 Figures
Emulation δικτύων με GNS3
Creators: name: Νικολόπουλος, Αριστείδης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Δίκτυα
Εξομοίωση
Network
GNS3
Emulation

description: Το αντικείμενο της διπλωματικής εργασίας έχει ως στόχο να κατανοήσει ο μέσος φοιτητής το Graphic Network Simulator 3 (GNS3), ένα εργαλείο ανοιχτού λογισμικού ιδιαίτερα χρήσιμο για προσημείωση δικτύων. Αυτό διεκπεραιώνεται σταδιακά, από βασικές γνώσεις δικτύων και οδηγίες εγκατάστασης και χρήσης του εργαλείου GNS3 και μέσω ασκήσεων όπως σχεδίαση εικονικών τοπικών δικτύων (VLAN), πρωτόκολλα δρομολόγησης (RIPv2, OSPF) και υλοποίηση DHCP και NAT
description: The object of the dissertation aims to help the average student understand the Graphic Network Simulator 3 (GNS3) tool, which is open-source software particularly useful for network simulation. This is realized gradually, from basic networking knowledge and instructions for installing and using the GNS3 tool and through exercises such as Virtual Local-Area Network (VLAN) design, routing protocols (RIPv2, OSPF) and DHCP and NAT implementation
Neutrino signals of lightcone fluctuations resulting from fluctuating space-time
Creators: name: Stuttard, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: One of the most common expectations of a quantum theory of gravity is that space-time is uncertain or fluctuating at microscopic scales, making it a stochastic medium for particle propagation. Particles traversing this space-time may experience fluctuations in travel times or velocities, together referred to as lightcone fluctuations, with even very small effects potentially accumulating into observable signals over large distances. In this work we present a heuristic model of lightcone fluctuations and study the resulting modifications to neutrino propagation, including neutrino decoherence and arrival time spread. We show the expected scale of such effects due to `natural' Planck scale physics and consider how they may be observed in neutrino detectors, and compare the potential of neutrinos to $γ$-ray astronomy. Using simulations of neutrino mass states propagating in a fluctuating environment, we determine an analytic decoherence operator in the framework of open quantum systems to quantitatively evaluate neutrino decoherence resulting from lightcone fluctuations, allowing experimental constraints on neutrino decoherence to be connected to Planck scale fluctuations in space-time and $γ$-ray results.
description: 13 pages, 7 figure
Sensitivity of Standard Library Cells to Optical Fault Injection Attacks in IHP 250 nm Technology
Creators: name: Petryk, Dmytro
name: Dyka, Zoya
name: Langendoerfer, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: The IoT consists of a lot of devices such as embedded systems, wireless sensor nodes (WSNs), control systems, etc. It is essential for some of these devices to protect information that they process and transmit. The issue is that an adversary may steal these devices to gain a physical access to the device. There is a variety of ways that allows to reveal cryptographic keys. One of them are optical Fault Injection attacks. We performed successful optical Fault Injections into different type of gates, in particular INV, NAND, NOR, FF. In our work we concentrate on the selection of the parameters configured by an attacker and their influence on the success of the Fault Injections.
Boosting Rumen Development in Dairy Calves: The Role of Calf Starter
Creators: name: Manju Lata, Assistant Professor
Publisher: name: veterinary today
Year: 2024

description: Calf rearing is the process of raising a calf from birth to 12 weeks of age to ensure it is healthy, strong, and well-grown. The main goal of calf rearing is to transition the calf from a milk-based diet to a solid feed-based diet. When dairy calves are born, they are essentially monogastrics or simple stomached animals with a non-functioning rumen and reticulum. They rely on the nutrients supplied from milk for their nutrition. The nature of solid feed and the amount consumed can influence rumen development. Highly palatable “starter” feeds, containing easily fermentable carbohydrates, are thought to stimulate rumen development, including changes in the epithelium of the forestomach.
An Effort to Measure Customer Relationship Performance in Indonesia's Fintech Industry
Creators: name: Rabbani, Alisya Putri
name: Alamsyah, Andry
name: Widiyanesti, Sri
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: K.4.m
subject: 00-XX

description: The availability of social media simplifies the companies-customers relationship. An effort to engage customers in conversation networks using social media is called Social Customer Relationship Management (SCRM). Social Network Analysis helps to understand network characteristics and how active the conversation network on social media. Calculating its network properties is beneficial for measuring customer relationship performance. Financial Technology, a new emerging industry that provides digital-based financial services utilize social media to interact with its customers. Measuring SCRM performance is needed in order to stay competitive among others. Therefore, we aim to explore the SCRM performance of the Indonesia Fintech company. In terms of discovering the market majority thought in conversation networks, we perform sentiment analysis by classifying into positive and negative opinion. As case studies, we investigate Twitter conversations about GoPay, OVO, Dana, and LinkAja during the observation period from 1st October until 1st November 2019. The result of this research is beneficial for business intelligence purposes especially in managing relationships with customers.
description: 5 pages, 2 figures, 5 tables
On the checkerboard pattern and the autocorrelation of photoemission data in high temperature superconductors
Creators: name: Bascones, E.
name: Valenzuela, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the pseudogap state the spectrum of the autocorrelation of angle resolved photoemission (AC-ARPES) data of Bi2212 presents non-dispersive peaks in momentum space which compare well with those responsible of the checkerboard pattern found in the density of states by Scanning Tunneling Microscopy. This similarity suggests that the checkerboard pattern originates from peaks in the joint density of states, as the dispersive peaks found in the superconducting state do. Here we show that the experimental AC-ARPES spectrum can be reproduced within a model for the pseudogap with no charge-ordering or symmetry breaking. We predict that, because of the competition of superconductivity and pseudogap, in the superconducting state, the AC-ARPES data of underdoped cuprates will present both dispersive and non-dispersive peaks and they will be better observed in cuprates with low critical temperature. We finally argue that the AC-ARPES data is a complementary and convenient way to measure the arc length.
description: 5 pages, 3 eps figures
Evaluation of the Sensitivity of RRAM Cells to Optical Fault Injection Attacks
Creators: name: Petryk, Dmytro
name: Dyka, Zoya
name: Perez, Eduardo
name: Mahadevaiaha, Mamathamba Kalishettyhalli
name: Kabin, Ievgen
name: Wenger, Christian
name: Langendoerfer, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Resistive Random Access Memory (RRAM) is a type of Non-Volatile Memory (NVM). In this paper we investigate the sensitivity of the TiN/Ti/Al:HfO2/TiN-based 1T-1R RRAM cells implemented in a 250 nm CMOS IHP technology to the laser irradiation in detail. Experimental results show the feasibility to influence the state of the cells under laser irradiation, i.e. successful optical Fault Injection. We focus on the selection of the parameters of the laser station and their influence on the success of optical Fault Injections.
Metallicity distribution of Omega Cen Red Giants based on the Stroemgren m1 metallicity index
Creators: name: Calamida, A.
name: Bono, G.
name: Freyhammer, L. M.
name: Grundahl, F.
name: Corsi, C. E.
name: Stetson, P. B.
name: Buonanno, R.
name: Hilker, M.
name: Richtler, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We adopted uvby Stroemgren photometry to investigate the metallicity distribution of Omega Cen Red Giant (RG) stars. We provided a new empirical calibration of the Stroemgren m1 = (v-b)-(b-y) metallicity index based on cluster stars. The new calibration has been applied to a sample of Omega Cen RGs. The shape of the estimated metallicity distribution is clearly asymmetric, with a sharp cut-off at low metallicities ([Fe/H] < -2.0) and a metal-rich tail up to [Fe/H] ~ 0.0. Two main metallicity peaks have been identified, around [Fe/H] ~ -1.9 and -1.3 dex, and a metal-rich shoulder at ~ 0.2 dex.
description: 4 pages, 3 figures. To appear in the Proceedings of IAU Symposium 241: "Stellar Populations as Building Blocks of Galaxies", 10-16 December, 2006 at La Palma, Canary Islands, Spain
Η Ποιότητα Ζωής στις Οικογένειες των παιδιών με Αυτισμό
Creators: name: Πάλλα, Κυριακούλα Θεοχάρη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ποιότητα ζωής
Αυτισμός
Οικογένειες – Φροντιστές
Quality of life
Autism
Parents – caregivers

description: Στόχος της παρούσας βιβλιογραφικής ανασκόπησης ήταν να αναδείξει τα ευρήματα των επιστημονικών μελετών της τελευταίας 20ετίας σχεδόν, αναφορικά με την ποιότητα ζωής των οικογενειών των παιδιών και ενηλίκων με διαταραχή αυτιστικού φάσματος. Ταυτόχρονα, εξετάστηκαν οι παράγοντες που μπορούν να προβλέψουν ή συσχετίζονται με τη διαμόρφωση της ποιότητας ζωής των ατόμων αυτών. Για τις ανάγκες της παρούσας μελέτης έγινε αναζήτηση της σχετικής βιβλιογραφίας από μεγάλες ηλεκτρονικές βάσεις δεδομένων και συνολικά συμπεριλήφθηκαν 11 άρθρα που είχαν εφαρμόσει την ποσοτική μέθοδο έρευνας. Τα αποτελέσματα της μελέτης αυτής υπογράμμισαν ότι η ποιότητα ζωής των οικογενειών των ατόμων με διαταραχή αυτιστικού φάσματος είναι χειρότερη σε σχέση με άλλες ομάδες ελέγχου με τις οποίες συγκρίθηκαν, ενώ οι διαστάσεις της ποιότητας ζωής που φάνηκε να επηρεάζονται περισσότερο ήταν αυτή της ψυχικής και σωματικής υγείας. Ακόμα, από τους πιο κοινούς παράγοντες που φαίνεται να επηρεάζουν την ποιότητα ζωής των οικογενειών φάνηκε να είναι η ύπαρξη ψυχοπαθολογίας στους γονείς, η οικονομική επιβάρυνση, η σοβαρότητα της ασθένειας του παιδιού, η κοινωνική υποστήριξη και τα προβλήματα συμπεριφοράς των παιδιών αυτών. Τέλος, γίνεται συζήτηση των αποτελεσμάτων και προτάσεις για μελλοντικές έρευνες και πρακτική εφαρμογή των αποτελεσμάτων αυτών.
description: The aim of this literature review was to highlight the findings of scientific studies of the last 20 years, almost, regarding the quality of life of families of children and adults with autism spectrum disorder. At the same time, the factors that can predict or correlate with the shaping of the quality of life of these individuals were examined. For the needs of the present study, the relevant literature was searched from large electronic databases and a total of 11 articles that had applied the quantitative research method were included. The results of this study highlighted that the quality of life of the families of people with autism spectrum disorder is worse than other control groups with which they were compared, while the dimensions of quality of life that seemed to be most affected were that of mental and physical health. Also, the most common factors that seem to affect the quality of life of families appeared to be the existence of psychopathology in the parents, the financial burden, the severity of the child's illness, social support and behavioral problems of these children. Finally, the results are discussed and suggestions for future research and practical application of these results.
Metal Fillers as Potential Low Cost Countermeasure against Optical Fault Injection Attacks
Creators: name: Petryk, Dmytro
name: Dyka, Zoya
name: Katzer, Jens
name: Langendoerfer, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Physically accessible devices such as sensor nodes in Wireless Sensor Networks or "smart" devices in the Internet of Things have to be resistant to a broad spectrum of physical attacks, for example to Side Channel Analysis and to Fault Injection attacks. In this work we concentrate on the vulnerability of ASICs to precise optical Fault Injection attacks. Here we propose to use metal fillers as potential low-cost countermeasure that may be effective against a broad spectrum of physical attacks. In our future work we plan to evaluate different methods of metal fillers placement, to select an effective one and to integrate it as additional design rules into automated design flows.
On Hamiltonian-Minimal Lagrangian Tori in CP^2
Creators: name: Mironov, A. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We obtain some equations for Hamiltonian-minimal Lagrangian surfaces in CP^2 and give their particular solutions in the case of tori.
Theoretical analysis on the transient ignition of premixed expanding flame in a quiescent mixture
Creators: name: Yu, Dehai
name: Chen, Zheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The present theory considers the transient evolution of the temperature and fuel mass fraction distributions, and it can determine the critical heating power and minimum ignition energy for successful ignition. The flame initiation process subject to central heating can be approximately decomposed into four stages, i.e., the fast establishment of the ignition kernel, the ignition-energy-supported flame kernel propagation, unsteady transition of the flame kernel, and quasi-steady spherical flame propagation. Comparison between present transient theory and previous quasi-steady theory indicates that the unsteady effects directly lead to the appearance of flame kernel establishing stage and considerably affect the subsequent flame kernel development by lowering the flame propagation speed. Time scale analysis is conducted, and it is found that the transient formulation completely degenerates to the quasi-steady theory either in the neighborhood of stationary flame ball or as approaching the planar flame. Previous quasi-steady theory shows that the critical heating power for successful ignition is proportional to the cube of the critical flame radius. However, the critical heating power predicted by the present transient formulation deviates this scaling law, which can be attributed to the unsteady thermal conduction from heating center to the flame front. Furthermore, in the transient formulation the central heating with finite duration is considered and the minimum ignition energy is obtained. For the first time, the memory effect that persistently drives flame propagation subsequent to central heating switching-off is examined. It is found that as the heating power grows, the memory effect becomes increasingly important and it can greatly reduce the minimum ignition energy.