cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulated training for medical students in gynecological care for transgender patients
Creators: name: Peixoto, Raquel
name: Sobral, Letícia
name: Lima, João Pedro
name: Madureira, Amanda
name: Liandra Monteiro
name: Britto, Débora
Publisher: name: F1000 Research Limited
Year: 2024

description: A realistic scenario of a transgender couple with a suspected pregnancy was developed. Most students stated that they didn´t discuss the health needs of LGBTQ+ people in their graduation course. The simulated training during medical school could help train physicians who are culturally sensitive to deal with LGBTQ+ people and their specific needs.

There is a shortage of validated simulated scenarios for developing undergraduates' skills and attitudes about LGBTQ+ health. This study builds and validates a scenario for simulated training in gynecological outpatient care of a trans man. The study included clerkship medical students from a public university of Ceará-Brazil and two trans men standard patients invited to take part in the simulation. A realistic scenario was developed by a team of gynecology and sexology faculties, based on health care gaps highlighted by LGBTQ+ people. After the simulation, the students completed a socio-demographic questionnaire and two validated scales. Descriptive analysis of quantitative data was applied. The study was approved by the institution's research ethics committee. 25 students participated, with an average age of 24.7, all of whom cisgender and 56% women. 24% declared themselves LGBTQ+, 48% black and 44% Catholic. The scenario addressed a trans man reporting secondary amenorrhea, in a relationship with a trans woman, without using contraceptive methods. During the simulation, 56% of interns used only the social name to refer to the patient, 52% asked about partnerships and sexual practices, 60% suspected that the patient might be pregnant. Only 20% provided guidance on treatments offered by the public health system. The patient-actors felt prejudice in 20%. In response to the “Satisfaction with Simulated Clinical Experiences Scale” questionnaire, students rated their satisfaction with the activity at 8.76, difficulty 8.84, satisfaction with the debriefing 9.24, and realism of the scenario 9.52 (Likert 0-10). About the "Competency for the health care of lesbians, gays, bisexuals, and transgenders" questionnaire, most students stated that they didn´t discuss the health needs of LGBTQ+ people in their graduation course. The students expressed satisfaction with the simulation. The activity emphasized the importance of expanding training in sexual and gender diversity in the undergraduate medical curriculum. The adoption of simulated LGBTQ+ health training during medical school could help train physicians who are culturally sensitive and have the necessary skills to deal with LGBTQ+ people and their specific needs.

Note: No consent was required for publication as the data was anonymized. These changes did not distort the scientific significance.
The Deeper, Wider, Faster Program: Exploring stellar flare activity with deep, fast cadenced DECam imaging via machine learning
Creators: name: Webb, Sara
name: Flynn, Chris
name: Cooke, Jeff
name: Zhang, Jielai
name: Mahabal, Ashish
name: Abbott, Tim
name: Allen, Rebecca
name: Andreoni, Igor
name: Bird, Sarah
name: Goode, Simon
name: Lochner, Michelle
name: Pritchard, Tyler
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present our 500 pc distance-limited study of stellar fares using the Dark Energy Camera as part of the Deeper, Wider, Faster Program. The data was collected via continuous 20-second cadence g band imaging and we identify 19,914 sources with precise distances from Gaia DR2 within twelve, ~3 square-degree, fields over a range of Galactic latitudes. An average of ~74 minutes is spent on each field per visit. All light curves were accessed through a novel unsupervised machine learning technique designed for anomaly detection. We identify 96 flare events occurring across 80 stars, the majority of which are M dwarfs. Integrated are energies range from $\sim 10^{31}-10^{37}$ erg, with a proportional relationship existing between increased are energy with increased distance from the Galactic plane, representative of stellar age leading to declining yet more energetic are events. In agreement with previous studies we observe an increase in flaring fraction from M0 -> M6 spectral types. Furthermore, we find a decrease in the flaring fraction of stars as vertical distance from the galactic plane is increased, with a steep decline present around ~100 pc. We find that ~70% of identified flares occur on short timescales of ~8 minutes. Finally we present our associated are rates, finding a volumetric rate of $2.9 \pm 0.3 \times 10^{-6}$ flares pc$^{-3}$ hr$^{-1}$.
description: 20 pages, 14 figures, 6 tables
Mongolotettix tianmushanensis Li, Zhang & Yin, 2024, sp. nov.
Creators: name: Li, Yan
name: Zhang, Da-Peng
name: Yin, Zhan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Acrididae
Mongolotettix
Mongolotettix tianmushanensis

description: Mongolotettix tianmushanensis sp. nov. Figs. 1–10
Holotype ♂, paratype ♀, Zhejiang, Tianmushan, 30º10´N, 118º52´E, 2011-VII-29, collected by Wang Pen-Qiang & Zhang De-Zhi.
Male: Body medium in size. Head shorter than pronotum. Face oblique in profile. Frontal ridge widened downward. Antennae ensiform. Eyes oval, vertical diameter 1.8 times horizontal diameter and 1.3 times length of subocular furrow. Pronotum median keel visible, cut by hind transverse sulcus distinctly, lateral keels almost parallel, prozona 1.4 times metazona in length. Tegmina shorter, almost reaching the base of epiproct, distal margin concave in the middle, width of cubital area wider than width of medial area. Interspace of mesosternum narrow in the middle, length 2.5 times minimum width. Lateral lobes of metasternum separated. Upper keel of hind femur smooth, length of hind femur 5.6 times its maximum width, end of lower knee lobes angular, inner side with 97 stridulatory pegs, apex acuted. Hind tibia with 12 spines on inner side and 13 spines on outer side, external apical spine absent. Second metatarsomere shorter than the first. Tympanum large and round. Epiproct scutiform. Furculae larger, curver. Cercus long conical, extending over the tip of epiproct. Subgenital plate conical, apex acute. Hind margin of tergum of periproct with circular furculae. Width of epiphallus larger than high, both inner sides of epiphallus with projection in the middle (fig.3).
Female: Body more robust. Vertical diameter of eyes 1.5 times horizontal diameter and distinctly shorter than length of subocular furrow. Prozona 1.6 times metazoan in length. Tegmina extending over the hind margin of first abdominal tergum, length 2.6 times its maximum width. Length of hind femur 5.4 times its maximum width. Cercus short-conical, not reaching epiproct. Subgenital plate oblong, hind margin prominently acute in the middle. Upper ovipositor valve slender, length 3.8 times its maximum width, outer margin smooth.
Coloration: Body yellowish brown. Antennae yellow. Pronotum yellowish brown. Tegmina of male without white stripe on the fore margin at base. Tegmina of female with a black longitudinal stripe before the middle.Abdomen yellowish brown.
Measurement (in mm): Length of body: ♂ 21.7, ♀ 32.1. Length of tegmina: ♂ 11.2, ♀ 5.1. Length of hind femur: ♂ 10.9, ♀ 17.3.
Diagnosis. The new species is similar to M. jiangxiensis Zhang, et al, 2023. The major differences are listed in Table 1.
Etymology The specific epithet is named for the type locality Tianmushan.
description: Published as part of Li, Yan, Zhang, Da-Peng & Yin, Zhan, 2024, A new species of the genus Mongolotettix Rehn, 1928 from Zhejiang, China (Acrididae, Acridoidea, Orthoptera), pp. 297-300 in Zootaxa 5492 (2) on page 297, DOI: 10.11646/zootaxa.5492.2.9, http://zenodo.org/record/13219412
Orthogonal Features-based EEG Signal Denoising using Fractionally Compressed AutoEncoder
Creators: name: Nagar, Subham
name: Kumar, Ahlad
name: Swamy, M. N. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A fractional-based compressed auto-encoder architecture has been introduced to solve the problem of denoising electroencephalogram (EEG) signals. The architecture makes use of fractional calculus to calculate the gradients during the backpropagation process, as a result of which a new hyper-parameter in the form of fractional order ($α$) has been introduced which can be tuned to get the best denoising performance. Additionally, to avoid substantial use of memory resources, the model makes use of orthogonal features in the form of Tchebichef moments as input. The orthogonal features have been used in achieving compression at the input stage. Considering the growing use of low energy devices, compression of neural networks becomes imperative. Here, the auto-encoder's weights are compressed using the randomized singular value decomposition (RSVD) algorithm during training while evaluation is performed using various compression ratios. The experimental results show that the proposed fractionally compressed architecture provides improved denoising results on the standard datasets when compared with the existing methods.
description: 9 pages, 8 figures, 26 references
A population of high-redshift type-2 quasars-I. Selection Criteria and Optical Spectra
Creators: name: Martinez-Sansigre, Alejo
name: Rawlings, Steve
name: Lacy, Mark
name: Fadda, Dario
name: Jarvis, Matt J.
name: Marleau, Francine R.
name: Simpson, Chris
name: Willott, Chris J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the relative merits of mid-infrared and X-ray selection of type-2 quasars. We describe the mid-infrared, near-infrared and radio selection criteria used to find a population of redshift z~2 type-2 quasars which we previously argued suggests that most supermassive black hole growth in the Universe is obscured (Martinez-Sansigre et al., 2005). We present the optical spectra obtained from the William Herschel Telescope, and we compare the narrow emission line luminosity, radio luminosity and maximum size of jets to those of objects from radio-selected samples. This analysis suggests that these are genuine radio-quiet type-2 quasars, albeit the radio-bright end of this population. We also discuss the possibility of two different types of quasar obscuration, which could explain how the ~2-3:1 ratio of type-2 to type-1 quasars preferred by modelling our population can be reconciled with the ~1:1 ratio predicted by unified schemes.
description: 22 Pages, 12 Figures. Accepted by MNRAS
Polarization - dependent tunneling of light in gradient optics
Creators: name: Shvartsburg, Alexander
name: Kuzmiak, Vladimir
name: Petite, Guillaume
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Reflection-refraction properties of photonic barriers, formed by dielectric gradient nanofilms, for inclined incidence of both S- and P-polarized electromagnetic (EM) waves are examined by means of exactly solvable models. We present generalized Fresnel formulae, describing the influence of the non-local dispersion on reflectance and transmittance of single- and double-layer gradient photonic barriers for S- and P- waves and arbitrary angles of incidence. The non-local dispersion of such layers, arising due to a concave spatial profile of dielectric susceptibility across the plane film, is shown to result in a peculiar heterogeneity - induced optical anisotropy, providing the propagation of S(P) waves in tunneling (travelling) regimes. The results obtained indicate the possibility of narrow-band non-attenuated tunneling (complete transmittance) of oblique S- waves through such heterogeneous barriers, and the existence of spectral areas characterized by strong reflection of P-waves and deep contrast between transmitted S- and P-waves. The scalability of obtained exact analytical solutions of Maxwell equations into the different spectral ranges is discussed and the application potential of these phenomena for miniaturized polarizers and filters is demonstrated.
Quantum and Randomised Algorithms for Non-linearity Estimation
Creators: name: Bera, Debajyoti
name: Sapv, Tharrmashastha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Non-linearity of a Boolean function indicates how far it is from any linear function. Despite there being several strong results about identifying a linear function and distinguishing one from a sufficiently non-linear function, we found a surprising lack of work on computing the non-linearity of a function. The non-linearity is related to the Walsh coefficient with the largest absolute value; however, the naive attempt of picking the maximum after constructing a Walsh spectrum requires $Θ(2^n)$ queries to an $n$-bit function. We improve the scenario by designing highly efficient quantum and randomised algorithms to approximate the non-linearity allowing additive error, denoted $λ$, with query complexities that depend polynomially on $λ$. We prove lower bounds to show that these are not very far from the optimal ones. The number of queries made by our randomised algorithm is linear in $n$, already an exponential improvement, and the number of queries made by our quantum algorithm is surprisingly independent of $n$. Our randomised algorithm uses a Goldreich-Levin style of navigating all Walsh coefficients and our quantum algorithm uses a clever combination of Deutsch-Jozsa, amplitude amplification and amplitude estimation to improve upon the existing quantum versions of the Goldreich-Levin technique.
description: Accepted in ACM Transactions on Quantum Computing
Roughening transition as a driving factor in the formation of self
Creators: name: Gorshkov, Vyacheslav N.
name: Tereshchuk, Vladimir V.
name: Sareh, Pooya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Based on the Monte Carlo kinetic method, we investigated the formation mechanisms of periodical modulations arising along the length of one-dimensional structures. The evolution of initially cylindrical nanowires/slabs at temperatures lower than their respective melting temperatures can result either in breakup into single nanoclusters or in the formation of stable states with pronounced modulations of cross section. Such configurations, observed in a number of experiments, are excited at wavelengths that are below the critical value for the development of classical Rayleigh instability. We show that the modulation excited in the subcritical mode corresponds to the appearance of roughening transition on the quasi-one-dimensional surface of nanowires/slabs. Since the arise of roughening transition is possible only on certain facets of metals with a given crystal structure, the short-wavelength modulations of one-dimensional systems, as shown in our work, can be realized (i) with the proper orientation of the nanowire/slab axis providing spontaneous appearance of roughening transition on its lateral surface, (ii) by the method of activating the surface diffusion of atoms by external impact (irradiation with an electron beam or contact with a cold plasma), which stimulates roughening transition without significant heating of the nanowire. The results obtained for the cases of BCC and FCC lattices can be used in the controlled synthesis of ordered one-dimensional structures for use in optoelectronics and in ultra-large-scale integrated circuits.
description: 27 pages, 9 figures, Supplementary materials
Onset of unsteady horizontal convection in rectangle tank at $Pr=1$
Creators: name: Sun, Liang
name: MA, Dong-Jun
name: Zhang, Wei
name: Sun, De-Jun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The horizontal convection within a rectangle tank is numerically simulated. The flow is found to be unsteady at high Rayleigh numbers. There is a Hopf bifurcation of $Ra$ from steady solutions to periodic solutions, and the critical Rayleigh number $Ra_c$ is obtained as $Ra_c=5.5377\times 10^8$ for the middle plume forcing at $Pr=1$, which is much larger than the formerly obtained value. Besides, the unstable perturbations are always generated from the central jet, which implies that the onset of instability is due to velocity shear (shear instability) other than thermally dynamics (thermal instability). Finally, Paparella and Young's [J. Fluid Mech. 466 (2002) 205] first hypotheses about the destabilization of the flow is numerically proved, i.e. the middle plume forcing can lead to a destabilization of the flow.
description: 4pages, 6 figures, extension of Chin. Phys. Lett. 2008, 25(6), in press
A note on zero-one laws in metrical Diophantine approximation
Creators: name: Beresnevich, Victor
name: Velani, Sanju
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11J83

description: In this paper we discuss a general problem on metrical Diophantine approximation associated with a system of linear forms. The main result is a zero-one law that extends one-dimensional results of Cassels and Gallagher. The paper contains a discussion on possible generalisations including a selection of various open problems.
description: 12 pages, Dedicated to Wolfgang Schmidt on the occasion of his 75th birthday
Improved Measurements of Color-Suppressed Decays B0bar -> D0 pi0, D0 eta, D0 omega, D*0 pi0, D*0 eta and D*0 omega
Creators: name: Blyth, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present improved measurements of the branching fractions of the color-suppressed decays $\bar{B}^0 \to D^{(*)0} h^{0}$ where $h^{0}$ represents a light neutral meson $π^{0}$, $η$ or $ω$. The measurements are based on a data sample of 140 $fb^{-1}$, collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider, corresponding to seven times the luminosity of the previous Belle measurements. All the measured branching fractions fall in the range 1.4-2.4 $\times 10^{-4}$, which is significantly higher than theoretical predictions based on naive factorization.
description: 11 pages, 5 figures, KEK Preprint 2006-17, Belle Preprint 2006-20, minor changes : this version accepted for publication in Phys. Rev. D
МАЪРИФАТЛИ ЖАМИЯТНИ БАРПО ЭТИШДА  ТАСАВВУФ ФАЛСАФАСИНИНГ ЎРНИ
Creators: name: Эватов, С.
Publisher: name: Zenodo
Year: 2023

description: Ўрта аср Шарқ алломаларининг гносеологик ва теологик қарашларини бугунги кунга трансформация қилиш вазифалари долзарблик касб этмоқда. Чунки бугунги кунда ислом илоҳиётини чуқур ўрганиш, ислом гносеологиясини англаш, исломнинг инсонпарварлик моҳиятини очиб бериш имконини беради. Бундай вазиятда фақатгина илм олишга кучли истак ва қатъиятни шакллантириш билангина ёшларни маърифат йўлига йўналтириш ва уларни турли чалғитувчи омиллардан асраш мумкин бўлади. Бу борада ўрта асрлар шарқида гносеологик ва теологик қарашлар шаклланишида илмли-маърифатли инсонлар, уламолар, тобеъинларнинг илмий фаолиятдаги машаққатини ўргатиш, ўша замоннинг толерант ва келишувчан илмий муҳитини яратиш муҳим аҳамиятга эга ҳисобланади. Зеро, маърифатли жамият барпо этишни мақсад қилган халқимиз  аждодлар тажрибасидан ўтган эзгуликка йўналтирилган тамойиллар орқали маънавий макон яратиш имкониятига эга бўлади.
PerfSim: A Performance Simulator for Cloud Native Microservice Chains
Creators: name: Khan, Michel Gokan
name: Taheri, Javid
name: Al-Dulaimy, Auday
name: Kassler, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Cloud native computing paradigm allows microservice-based applications to take advantage of cloud infrastructure in a scalable, reusable, and interoperable way. However, in a cloud native system, the vast number of configuration parameters and highly granular resource allocation policies can significantly impact the performance and deployment cost. For understanding and analyzing these implications in an easy, quick, and cost-effective way, we present PerfSim, a discrete-event simulator for approximating and predicting the performance of cloud native service chains in user-defined scenarios. To this end, we proposed a systematic approach for modeling the performance of microservices endpoint functions by collecting and analyzing their performance and network traces. With a combination of the extracted models and user-defined scenarios, PerfSim can then simulate the performance behavior of all services over a given period and provide an approximation for system KPIs, such as requests' average response time. Using the processing power of a single laptop, we evaluated both simulation accuracy and speed of PerfSim in 104 prevalent scenarios and compared the simulation results with the identical deployment in a real Kubernetes cluster. We achieved ~81-99% simulation accuracy in approximating the average response time of incoming requests and ~16-1200 times speed-up factor for the simulation.
description: for the dataset used for evaluation, see https://ieee-dataport.org/documents/experiments-data-used-evaluating-perfsim-simulation-accuracy-based-sfc-stress-workloads and https://ui.neptune.ai/o/kau/org/PerfSim/experiments. Source code will be available via perfsim.io in end of January 2022
An AutoML-based Approach to Multimodal Image Sentiment Analysis
Creators: name: Lopes, Vasco
name: Gaspar, António
name: Alexandre, Luís A.
name: Cordeiro, João
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Sentiment analysis is a research topic focused on analysing data to extract information related to the sentiment that it causes. Applications of sentiment analysis are wide, ranging from recommendation systems, and marketing to customer satisfaction. Recent approaches evaluate textual content using Machine Learning techniques that are trained over large corpora. However, as social media grown, other data types emerged in large quantities, such as images. Sentiment analysis in images has shown to be a valuable complement to textual data since it enables the inference of the underlying message polarity by creating context and connections. Multimodal sentiment analysis approaches intend to leverage information of both textual and image content to perform an evaluation. Despite recent advances, current solutions still flounder in combining both image and textual information to classify social media data, mainly due to subjectivity, inter-class homogeneity and fusion data differences. In this paper, we propose a method that combines both textual and image individual sentiment analysis into a final fused classification based on AutoML, that performs a random search to find the best model. Our method achieved state-of-the-art performance in the B-T4SA dataset, with 95.19% accuracy.
Opacity of electromagnetically induced transparency for quantum fluctuations
Creators: name: Barberis-Blostein, P.
name: Bienert, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the propagation of a pair of quantized fields inside a medium of three-level atoms in $Λ$ configuration. We calculate the stationary quadrature noise spectrum of the field after propagating through the medium, in the case where the probe field is in a squeezed state and the atoms show electromagnetically induced transparency (EIT). We find an oscillatory transfer of the initial quantum properties between the probe and pump fields which is most strongly pronounced when both fields have comparable Rabi frequencies. This implies that the quantum state measured after propagation can be completely different from the initial state, even though the mean values of the field are unaltered.
R-Parity Violation and Non-Abelian Discrete Family Symmetry
Creators: name: Kajiyama, Yuji
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the implications of R-parity violating operators in a model with family symmetry. The family symmetry can determine the form of R-parity violating operators as well as the Yukawa matrices responsible for fermion masses and mixings. In this paper we consider a concrete model with non-abelian discrete symmetry Q_6 which contains only three R-parity violating operators. We find that ratios of decay rates of the lepton flavor violating processes are fixed thanks to the family symmetry, predicting BR(tau to 3e)/BR(tau to 3mu) ~ 4 m_{mu}^2/m_{tau}^2.
description: 20 pages, 3 figures
Limit stable objects on Calabi-Yau 3-folds
Creators: name: Toda, Yukinobu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20, 14J32, 18E30

description: In this paper, we introduce new enumerative invariants of curves on Calabi-Yau 3-folds via certain stable objects in the derived category of coherent sheaves. We introduce the notion of limit stability on the category of perverse coherent sheaves, a subcategory in the derived category, and construct the moduli spaces of limit stable objects. We then define the counting invariants of limit stable objects using Behrend's constructible functions on that moduli spaces. It will turn out that our invariants are generalizations of counting invariants of stable pairs introduced by Pandharipande and Thomas. We will also investigate the wall-crossing phenomena of our invariants under change of stability conditions.
description: 38pages
Multicomponent adhesive hard sphere models and short-ranged attractive interactions in colloidal or micellar solutions
Creators: name: Gazzillo, Domenico
name: Giacometti, Achille
name: Fantoni, Riccardo
name: Sollich, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the dependence of the stickiness parameters $t_{ij}=1/(12τ_{ij})$ -- where the $τ_{ij}$ are the conventional Baxter parameters -- on the solute diameters $σ_{i}$ and $σ_{j}$ in multicomponent sticky hard sphere (SHS) models for fluid mixtures of mesoscopic neutral particles. A variety of simple but realistic interaction potentials, utilized in the literature to model \textit{short-ranged attractions} present in real solutions of colloids or reverse micelles, is reviewed. We consider: i) van der Waals attractions, ii) hard-sphere-depletion forces, iii) polymer-coated colloids, iv) solvation effects (in particular hydrophobic bonding and attractions between reverse micelles of water-in-oil microemulsions). We map each of these potentials onto an equivalent SHS model, by requiring the equality of the second virial coefficients. The main finding is that, for most of the potentials considered, the size-dependence of $t_{ij}(T,σ_{i},σ_{j})$ can be approximated by essentially the same expression, i.e. a simple polynomial in the variable $σ_{i}σ_{j}/σ_{ij}^{2}$, with coefficients depending on the temperature $T$, or -- for depletion interactions -- on the packing fraction $η_{0}$ of the depletant particles.
description: 31 pages, 1 figure, to appear in Phys. Rev. E
Αξιολόγηση της Ευρωστίας των Βαθιών Νευρωνικών Δικτύων σε Αντιπαραθετικά Παραδείγματα
Creators: name: Ελευθεριάδης, Χάρης Θεοφάνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Τεχνητά Νευρωνικά Δίκτυα
Βαθιά Μάθηση
Αντιπαραθετική Μηχανική Μάθηση
Artificial Neural Networks
Deep Learning
Adversarial Machine Learning

description: Η Βαθιά Μάθηση και τα Τεχνητά Νευρωνικά Δίκτυα σημειώνουν εξαιρετική επίδοση σε πληθώρα εργασιών, για αυτό και προτιμούνται έναντι άλλων μεθόδων στις περισσότερες εφαρμογές Τεχνητής Νοημοσύνης. Παρατηρήθηκε όμως, πως μικρές παραλλαγές των εισόδων τους, οδηγούν την συγκεκριμένη κατηγορία αλγορίθμων σε μη προβλέψιμη συμπεριφορά. Αυτό έχει σαν αποτέλεσμα να εγείρονται ερωτήματα σχετικά με την ασφάλεια και αξιοπιστία των εν λόγω μοντέλων, με το φαινόμενο να παίρνει σημαντικές διαστάσεις αν αναλογιστεί κανείς την σημαντικότητα των τεχνολογικών εγχειρημάτων όπου βρίσκουν εφαρμογή τα Βαθιά Νευρωνικά Δίκτυα. Αυτοκινούμενα Οχήματα, Συστήματα Αναγνώρισης Ταυτότητας και Αναγνώριση Φωνής είναι μερικά μόνο παραδείγματα εφαρμογών, όπου η ασφάλεια είναι ύψιστης σημασίας. Για αυτό τον λόγο, μελετώνται οι πιθανοί τρόποι προσβολής των συγκεκριμένων συστημάτων μέσω μεθόδων Αντιπαραθετικών Επιθέσεων, αλλά και οι μέθοδοι αύξησης της ευρωστίας των μοντέλων, έτσι ώστε αυτά να είναι ανθεκτικά έναντι ανάλογων κακόβουλων πρωτοβουλιών. Στην παρούσα εργασία πραγματοποιείται μελέτη και αξιολόγηση των state-of-the-art μεθόδων επίθεσης και αύξησης της ευρωστίας Βαθιών Νευρωνικών Δικτύων διαφορετικής πολυπλοκότητας. Προς αυτή την κατεύθυνση προτείνεται μια εναλλακτική προσέγγιση μέσω της οποίας επιτυγχάνεται δημιουργία εύρωστων μοντέλων έναντι κατηγοριών επιθέσεων οι οποίες δεν είχαν αντιμετωπιστεί έως τώρα.
description: Deep Learning and Artificial Neural Networks achieve remarkable performance in various tasks, so this is the reason why they are preferred in most Artificial Intelligence applications. Although, it is observed that very small perturbations of the original input, can lead this specific category of algorithms to behave in unpredictable manner. This situation raises several scientific questions regarding the security and reliability of the analogous systems that Deep Neural Networks (DNNs) are deployed, and the phenomenon riches significant proportions of concerns if one considers the significance of these systems. Self-driving cars, Identification Systems and Voice recognition are just some examples of applications where security is vital. For that reason, the study of the possible methods of attacking these systems through Adversarial Attacks has increased and so the methods creating robust models against malicious initiatives. In this Master Thesis, the state-of-the-art attacking methods are being examined and the evaluation of adversarial robustness of DNNs with different level of complexity is taking place. Towards this direction, a new alternative method is proposed, in witch is possible to achieve robustness against a category of attacking methods that have not confronted yet.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Statistical Mechanics of Semiflexible Bundles of Wormlike Polymer Chains
Creators: name: Heussinger, Claus
name: Bathe, Mark
name: Frey, Erwin
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: We demonstrate that a semiflexible bundle of wormlike chains exhibits a state-dependent bending stiffness that alters fundamentally its scaling behavior with respect to the standard wormlike chain. We explore the equilibrium conformational and mechanical behavior of wormlike bundles in isolation, in crosslinked networks, and in solution.
description: 4 pages, 3 figures, final version as published
On the zeros of Eisenstein series for $Γ_0^* (2)$ and $Γ_0^* (3)$
Creators: name: Miezaki, Tsuyoshi
name: Nozaki, Hiroshi
name: Shigezumi, Junichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F11

description: We locate all of the zeros of the Eisenstein series associated with the Fricke groups $Γ_0^{*}(2)$ and $Γ_0^{*}(3)$ in their fundamental domains by applying and expanding the method of F. K. C. Rankin and H. P. F. Swinnerton-Dyer (``{\it On the zeros of Eisenstein series}'', 1970).
description: 9 pages, no figure
Scalable universal tunable virtual-wavevector spatial frequency shift (TVSFS) super-resolution imaging
Creators: name: Tang, Mingwei
name: Han, Yubing
name: Ye, Dehao
name: Zhang, Qianwei
name: Pang, Chenlei
name: Liu, Xiaowei
name: Shen, Weidong
name: Ma, Yaoguang
name: Kaminski, Clemens F.
name: Liu, Xu
name: Yang, Qing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Developing a chip-based super-resolution imaging technique with large field-of-view (FOV), deep subwavelength resolution, and compatibility for both fluorescent and non-fluorescent samples is desired for material science, biomedicine, and life researches, etc. Previous on-chip super-resolution methods focus on either fluorescent or non-fluorescent imaging, putting an urgent requirement on the general imaging technique compatible with both of them. Here, we introduce a universal super-resolution imaging method based on tunable virtual-wavevector spatial frequency shift (TVSFS), realizing both labeled and label-free super-resolution imaging on a single delicately fabricated scalable photonic chip. Theoretically, with TVSFS, the diffraction limit of a linear optical system can be overcome, and the resolution can be improved more than three times, which is the limitation for most super-resolution imaging based on spatial frequency engineering. Diffractive units were fabricated on the chip's surface to provide a wavevector-variable evanescent wave illumination and induce tunable deep SFS in the samples' Fourier space. A resolution of λ/4.7 for the label-free sample and λ/7.1 for the labeled sample with a large FOV could be achieved with a CMOS-compatible process on a GaP chip. The large FOV, high-compatibility, and high-integration TVSFS chip may advance the fields like cell engineering, precision inspection in the industry, chemical research, etc.
description: 13 pages,5 figures
Fundamental Groups of Commuting Elements in Lie Groups
Creators: name: Torres-Giese, Enrique
name: Sjerve, Denis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We compute the fundamental group of the spaces of ordered commuting $n$-tuples of elements in the Lie groups SU(2), U(2) and SO(3). For SO(3) the computation of the mod-2 cohomology of the components of these spaces is also obtained.
Σύνθεση πολυμερικών μικροσωματιδίων για ιατρικές εφαρμογές
Creators: name: Καραμήτρου, Χριστίνα Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Μικροσωματίδια
Πολυ -ε-καπρολακτόνη
Bιοαποικοδομήσιμο
Microparticles
Poly-e-caprolactone
Biodegradable

description: O σκοπός της παρούσας ερευνητικής εργασίας είναι η ανάπτυξη μικροσωματιδίων, με μέγεθος 2–5 μm, από βιοδιασπώμενα υλικά για χρήση σε ιατρικές εφαρμογές. Στο πλαίσιο αυτό, οι στόχοι της παρούσας διπλωματικής εργασίας είναι α) ο σχεδιασμός και η σύνθεση μονοδιάσπαρτων σωματιδίων πολυμερικής φύσεως, και β) ο φυσικοχημικός χαρακτηρισμός τους, προκειμένου να προσδιοριστεί το μέγεθός τους σε υγρή και στερεά κατάσταση. Για την επίτευξη των παραπάνω στόχων, πραγματοποιήθηκε μια σειρά από πειραματικές μελέτες για τη σύνθεση και σταθεροποίηση των μικροσωματιδίων από πολυ-ε-καπρολακτόνη (poly-ε-caprolactone, PCL), με τη βοήθεια διάφορων σταθεροποιητών–γαλακτωματοποιητών, όπως α) η ζελατίνη, β) αλγινικά άλατα, γ) η πρωτεΐνη ορού (WPI), ή/και δ) πολυσορβικό 80 (Τween 80). Στη συνέχεια, τα παραγόμενα σωματίδια χαρακτηρίστηκαν με φασματοσκοπία υπερύθρου με μετασχηματισμό Fourier (FT-IR) και το μέγεθός τους προσδιορίστηκε με α) τη βοήθεια αναλυτή μεγέθους σωματιδίων (Master Sizer) σε στερεά κατάσταση, και β) οπτική μικροσκοπία (συνεστιακό μικροσκόπιο) σε υγρή κατάσταση. Τέλος, παρουσιάζονται τα βασικά αποτελέσματα και συμπεράσματα που σχετίζονται με τις βελτιστοποιημένες συνθήκες για τη σύνθεση των μικροσωματιδίων
description: The purpose of this research work is to develop microparticles, 2–5 μm in size, from biodegradable materials, for further use in medical applications. In this context, the objectives of this dissertation include a) the design and composition of singly dispersed polymeric particles, and b) their physicochemical characterization, in order to determine their size in the liquid and solid states. To achieve the above objectives, a series of experimental studies were conducted to synthesize and stabilize poly-ε-caprolactone (PCL) microparticles, using various stabilizers-emulsifiers, such as a) gelatin, b) alginate salts, c) serum protein (WPI), and/or d) polysorbate 80 (Tween 80). Subsequently, the particles produced were characterized by Fourier Transform Infrared spectroscopy (FT-IR) and their size was determined by a) a solid particle size analyzer (Master Sizer) in the solid state, and b) optical microscopy (systolic microscope) in the liquid state. Finally, the main results and conclusions related to the optimized conditions attained for the synthesis of microparticles are presented
Η σύμβαση διαχείρισης χαρτοφυλακίου
Creators: name: Τοπαλίδου, Μαρίνα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Διαχείριση χαρτοφυλακίου
Επενδυτική υπηρεσία
Τραπεζικό δίκαιο
Portfolio management
Investment service
Investment banking

description: Σκοπός της διπλωματικής μου εργασίας ήταν η μελέτη και νομική προσέγγιση της σύμβασης διαχείρισης χαρτοφυλακίου. Παρουσιάσαμε την έννοια της διαχείρισης χαρτοφυλακίου ως βασικής επενδυτικής υπηρεσίας και το ρόλο που διαδραματίζει αυτή στο δίκαιο της κεφαλαιαγοράς. Πριν αναλύσουμε το νομοθετικό πλαίσιο, εθνικό και ευρωπαϊκό που ρυθμίζει την σύμβαση, προχωρήσαμε σε διάκριση της αναλυθείσας έννοιας από άλλες συγγενικές. Ένα άλλο θέμα που θίξαμε είναι ο οικονομικός χαρακτηρισμός της διαχείρισης χαρτοφυλακίου γιατί η εν λόγω σύμβαση και ειδικότερα οι έννοια του κινδύνου επένδυσης απασχολεί την οικονομική επιστήμη. Ακόμη αναφερθήκαμε αναλυτικά στις υποχρεώσεις και τα δικαιώματα που απορρέουν από την σύμβαση διαχείρισης χαρτοφυλακίου, όπως και τις περιπτώσεις παθο0λογίας της σύμβασης. Τέλος επιχειρήθηκε και μια ανάλυση του ολλανδικού νομοθετικού πλαισίου της σύμβασης διαχείρισης χαρτοφυλακίου
description: The aim of the present thesis was the study and the legal approach of the portfolio management contract. We presented the definition of portfolio management as a main investment service and the role it plays in capital market law. Before analyzing the legislative framework, national and European which regulates the portfolio management, we tried to distinguish portfolio management from other related contract forms. Another issue we have presented is the economic characterization of portfolio management because this contract and in particular the concept of investment risk is of concern to economic science. We also referred in detail to the obligations and rights arising from the portfolio management contract, as well as the cases of contract pathology. Finally, an analysis of the Dutch legislative framework of the portfolio management contract was attempted
Information-disturbance tradeoff in covariant quantum state estimation
Creators: name: Sacchi, Massimiliano F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a general framework for quantifying the optimal tradeoff between the information retrieved by a quantum measurement and the disturbance on the quantum state in covariant quantum state estimation.
description: 4 pages; contribution for the proceedings of the QCMC06
Twisted Alexander polynomials and symplectic structures
Creators: name: Friedl, Stefan
name: Vidussi, Stefano
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R57, 57R17

description: Let N be a closed, oriented 3-manifold. A folklore conjecture states that S^1 x N admits a symplectic structure only if N admits a fibration over the circle. The purpose of this paper is to provide evidence to this conjecture studying suitable twisted Alexander polynomials of N, and showing that their behavior is the same as of those of fibered 3-manifolds. In particular, we will obtain new obstructions to the existence of symplectic structures and to the existence of symplectic forms representing certain cohomology classes of S^1 x N. As an application of these results we will show that S^1 x N(P) does not admit a symplectic structure, where N(P) is the 0-surgery along the pretzel knot P = (5,-3,5), answering a question of Peter Kronheimer.
description: 26 pages, final version, to appear in Amer. J. Math
Nambu dynamics and its noncanonical Hamiltonian representation in many degrees of freedom systems
Creators: name: Horikoshi, Atsushi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Nambu dynamics is a generalized Hamiltonian dynamics of more than two variables, whose time evolutions are given by the Nambu bracket, a generalization of the canonical Poisson bracket. Nambu dynamics can always be represented in the form of noncanonical Hamiltonian dynamics by defining the noncanonical Poisson bracket by means of the Nambu bracket. For the time evolution to be consistent, the Nambu bracket must satisfy the fundamental identity, while the noncanonical Poisson bracket must satisfy the Jacobi identity. However, in many degrees of freedom systems, it is well known that the fundamental identity does not hold. In the present paper we show that, even if the fundamental identity is violated, the Jacobi identity for the corresponding noncanonical Hamiltonian dynamics could hold. As an example, we evaluate these identities for a semiclassical system of two coupled oscillators.
description: 7 pages, final version
ENVIRONMENTAL SUSTAINABILITY MANAGEMENT AND PERFORMANCE OF FOOD, BEVERAGES AND TOBACCO MANUFACTURING FIRMS IN ENUGU STATE, NIGERIA
Creators: name: Ugwuanyi,, Christian
name: Oluka, Kingsley, Ugochukwu (Ph.D.)
Publisher: name: AMERICAN SERIAL
Year: 2024
Subjects: Environmental Sustainability Management, Performance, Ecosystem, Total Production Quality, Green Engineering and Adaptive Skill Acquisition

description: This work studied the effect of environmental sustainability management on performance of food, beverages and tobacco manufacturing firms in Enugu State, Nigeria. The specific objectives were to; ascertain the effect of ecosystem on total production quality and determine the effect of green engineering on adaptive skill acquisition.  The study adopted a survey design. The population of the study was two hundred and ninety seven (297). The sample size of 297 was adopted due to smaller unite of the population. The study used convenience sampling procedure and structured questionnaire was used to select respondents. Simple regression statistical tool was employed to test two formulated hypotheses. The findings revealed ecosystem had significant positive effect on production quality of food, beverages and tobacco Manufacturing firms in Enugu State (f-value = 47.403, and p value .000<0.05) and green engineering had significant positive effect on adaptive skills acquisition of food, beverages and tobacco Manufacturing firms in Enugu State (f-value = 4.035, and p value .008<0.05). Therefore, based on the findings, researcher also concluded that environmental sustainability management had significant positive effect on performance of food, beverages and tobacco manufacturing firms in Enugu State, Nigeria. The study thus recommends that Managers of manufacturing firms should ensure that all the strict policies on ecosystem as regards to production quality are adhered to in the course of their operation while emphasis on them should be encouraged to boost performance of firms in Nigeria
Additional file 8 of Weighted gene co-expression network indicates that the DYNLL2 is an important regulator of chicken breast muscle development and is regulated by miR-148a-3p
Creators: name: Li, Yuanfang
name: Yuan, Pengtao
name: Fan, Shengxin
name: Zhai, Bin
name: Jin, Wenjiao
name: Li, Donghua
name: Li, Hong
name: Sun, Guirong
name: Han, Ruili
name: Liu, Xiaojun
name: Tian, Yadong
name: Li, Guoxi
name: Kang, Xiangtao
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Table S5. Primer list.
Suppression of Intensity Fluctuations in Free Space High-Speed Optical Communication Based on Spectral Encoding of a Partially Coherent Beam
Creators: name: Berman, Gennady P.
name: Bishop, Alan R.
name: Chernobrod, Boris M.
name: Nguyen, Dinh C.
name: Gorshkov, Vyacheslav N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A new concept of a free-space, high-speed (Gbps) optical communication system based on spectral encoding of radiation from a broadband pulsed laser is developed. It is shown that, in combination with the use of partially coherent laser beams and a relatively slow photosensor, scintillations can be suppressed by orders of magnitude for distances of more than 10 km. We also consider the spectral encoding of radiation from a LED as a gigabit rate solution of the "last mile" problem and rapid-deployment systems for disaster recovery.
description: 16 pages, 2 figures
Field theory conjecture for loop-erased random walks
Creators: name: Fedorenko, Andrei A.
name: Doussal, Pierre Le
name: Wiese, Kay Joerg
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give evidence that the functional renormalization group (FRG), developed to study disordered systems, may provide a field theoretic description for the loop-erased random walk (LERW), allowing to compute its fractal dimension in a systematic expansion in epsilon=4-d. Up to two loop, the FRG agrees with rigorous bounds, correctly reproduces the leading logarithmic corrections at the upper critical dimension d=4, and compares well with numerical studies. We obtain the universal subleading logarithmic correction in d=4, which can be used as a further test of the conjecture.
description: 5 pages