cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic Structure of Chromium Trihalides beyond Density Functional Theory
Creators: name: Acharya, Swagata
name: Pashov, Dimitar
name: Cunningham, Brian
name: Rudenko, Alexander N.
name: Rösner, Malte
name: Grüning, Myrta
name: van Schilfgaarde, Mark
name: Katsnelson, Mikhail I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We explore the electronic band structure of free standing monolayers of chromium trihalides, CrX\textsubscript{3}{, X= Cl, Br, I}, within an advanced \emph{ab-initio} theoretical approach based in the use of Green's function functionals. We compare the local density approximation with the quasi-particle self-consistent \emph{GW} approximation (QS\emph{GW}) and its self-consistent extension (QS$G\widehat{W}$) by solving the particle-hole ladder Bethe-Salpeter equations to improve the effective interaction \emph{W}. We show that at all levels of theory, the valence band consistently changes shape in the sequence Cl{\textrightarrow}Br{\textrightarrow}I, and the valence band maximum shifts from the M point to the $Γ$ point. However, the details of the transition, the one-particle bandgap, and the eigenfunctions change considerably going up the ladder to higher levels of theory. The eigenfunctions become more directional, and at the M point there is a strong anisotropy in the effective mass. Also the dynamic and momentum dependent self energy shows that QS$G\widehat{W}$ adds to the localization of the systems in comparison to the QS\emph{GW} thereby leading to a narrower band and reduced amount of halogens in the valence band manifold.
ПРОБЛЕМА ИНТЕРФЕРЕНЦИИ В НЕМЕЦКОМ ЯЗЫКЕ (НА ПРИМЕРАХ СЛОВ И ТЕРМИНОВ В СФЕРЕ ЭКОНОМИКИ И БИЗНЕСА)
Creators: name: Н. С. Мавлянова, преподаватель Самаркадского  филиала ТГЭУ
Publisher: name: Zenodo
Year: 2023

description: Статья посвящена проблеме языковой интерференции слов и терминов  в сфере экономики и бизнеса на занятиях немецкого языка. Также приведены несколько методов обучения для  преодоления этой проблемы.

Ключевые слова: интерференция, межъязыковая интерференция, билингвизм, иноязычный акцент, фонетические нормы, аналитико- имитативный метод, артикуляция звуков.
Directional emission of stadium-shaped micro-lasers
Creators: name: Lebental, M.
name: Lauret, J. -S.
name: Zyss, J.
name: Schmit, C.
name: Bogomolny, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The far-field emission of two dimensional (2D) stadium-shaped dielectric cavities is investigated. Micro-lasers with such shape present a highly directional emission. We provide experimental evidence of the dependance of the emission directionality on the shape of the stadium, in good agreement with ray numerical simulations. We develop a simple geometrical optics model which permits to explain analytically main observed features. Wave numerical calculations confirm the results.
description: 4 pages, 8 figures
หลักการพิจารณาเงื่อนไขในการฟ้องคดีปกครอง
Creators: name: ฤทัยรัตน์ ปทุมานนท์
Publisher: name: คณะนิติศาสตร์ มหาวิทยาลัยนเรศวร
Year: 2558
Subjects: เงื่อนไขในการฟ้องคดีปกครอง, ศาลปกครอง, พระราชบัญญัติจัดตั้งศาลปกครองและวิธีพิจารณาคดีปกครอง พ.ศ. 2542

description: 1, 8, วารสารนิติศาสตร์ มหาวิทยาลัยนเรศวร
A Study on Universal Observation Control System And Its Application For LAMOST
Creators: name: Wang, Zheng
name: Tian, Yuan
name: Li, Jian
name: Cao, Zi-Huang
name: Zhao, Yong-Heng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: {The observatory control system (OCS), a part of automated control of Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST), runs on the CentOS6 platform and implements the communication between modules based on Common Object Request Broker Architecture (CORBA). However, CORBA is complicated and has limited development support; moreover, the official support for CentOS6 has ended. OCS inherently has some shortcomings such as the over-concentration of control and the blocking of device status processing, which hinder the realization of automated observation control of LAMOST. Therefore, this study designs and implements a universal observation control system (UOCS) for optical telescopes. The UOCS takes the device command as the basic execution unit, controls the device execution logic using observation script, controls the observation logic by event-driven messaging, and realizes mutual decoupling between modules via a distributed control mode, thereby ensuring high system robustness. The UOCS performs significantly better than OCS in terms of the observation performance, operator complexity, and communication error. Currently, UOCS is applied to the automated control of some devices and subsystems in LAMOST observation. It will be applied to the automated observation control of Multi-channel Photometric Survey Telescope by 2021.
description: total have 22 pages and 25 figures
Coupling between the 45 Hz Horizontal-Branch Oscillation and the Normal Branch Oscillation in Scorpius X-1
Creators: name: Yu, Wenfei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The observations of the bright persistent neutron star low-mass X-ray binary (LMXB) Sco X-1 performed with the {\it Rossi X-ray Timing Explorer} (RXTE) show a $\sim$ 6 Hz normal-branch oscillation (NBO), a $\sim$ 45 Hz horizontal-branch oscillation (HBO), and twin kHz quasi-periodic oscillations (QPOs) on its normal branch simultaneously. We have found that the fractional amplitude of the HBO corresponding to the NBO phase of high flux is 1.1%, while that of the NBO phase of low flux is undetectable, with a 3$σ$ upper limit of 0.4%, implying that the HBO strength varies with the NBO phase in an opposite way to that of the lower kHz QPO previously found, and suggests that the condition for the generation of the HBO is met when the NBO flux is high. The 6 Hz NBO in Sco X-1 connects the 45 Hz HBO and the twin kHz QPO together, showing a unique picture indicating a coupling between the QPOs, which has never been observed in other neutron star LMXBs. We discuss the implications for current models of the 45 Hz HBO, the 6 Hz NBO, and the twin kHz QPOs.
description: 10 pages, 2 figures, accepted for publication in ApJL
Direct imaging with highly diluted apertures. I. Field of view limitations
Creators: name: Lardiere, O.
name: Martinache, F.
name: Patru, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Future optical interferometric instrumentation mainly relies on the availability of an efficient cophasing system: once available, what has so far postponed the relevance of direct imaging with an interferometer will vanish. This paper focuses on the actual limits of snapshot imaging, inherent to the use of a sparse aperture: the number of telescopes and the geometry of the array impose the maximum extent of the field of view and the complexity of the sources. A second limitation may arise from the beam combination scheme. Comparing already available solutions, we show that the so called hypertelescope mode (or densified pupil) is ideal. By adjusting the direct imaging field of view to the useful field of view offered by the array, the hypertelescope makes an optimal use of the collected photons. It optimizes signal to noise ratio, drastically improves the luminosity of images and makes the interferometer compatible with coronagraphy, without inducing any loss of useful field of view.
description: 13 pages, 6 figures, accepted for publication in MNRAS. Full-resolution version available at http://www.obs-hp.fr/~lardiere/publi/2006-Lardiere-MNRAS.pdf
ปัญหาทางกฎหมายเกี่ยวกับคำสั่งทางปกครองที่ไม่ชอบด้วยกฎหมาย
Creators: name: อัญชริกา มูลมา
Publisher: name: คณะนิติศาสตร์ มหาวิทยาลัยนเรศวร
Year: 2558
Subjects: คำสั่งทางปกครองที่ไม่ชอบด้วยกฎหมาย, คำสั่งทางปกครองที่ผิดพลาดอย่างชัดแจ้งและร้ายแรง,ความเป็นโมฆะของคำสั่งทางปกครอง, นิติกรรมทางปกครองที่ไม่ชอบด้วยกฎหมาย

description: 1, 8, วารสารนิติศาสตร์ มหาวิทยาลัยนเรศวร
Phase diagram and structure of colloid-polymer mixtures confined between walls
Creators: name: Vink, Richard L. C.
name: De Virgiliis, Andres
name: Horbach, Juergen
name: Binder, Kurt
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: The influence of confinement, due to flat parallel structureless walls, on phase separation in colloid-polymer mixtures, is investigated by means of grand-canonical Monte Carlo simulations. Ultra-thin films, with thicknesses between $D=3-10$ colloid diameters, are studied. The Asakura-Oosawa model [J. Chem. Phys. 22, 1255 (1954)] is used to describe the particle interactions. To simulate efficiently, a ``cluster move'' [J. Chem. Phys. 121, 3253 (2004)] is used in conjunction with successive umbrella sampling [J. Chem. Phys. 120, 10925 (2004)]. These techniques, when combined with finite size scaling, enable an accurate determination of the unmixing binodal. Our results show that the critical behavior of the confined mixture is described by ``effective'' critical exponents, which gradually develop from values near those of the two-dimensional Ising model, to those of the three-dimensional Ising model, as $D$ increases. The scaling predictions of Fisher and Nakanishi [J. Chem. Phys. 75, 5875 (1981)] for the shift of the critical point are compatible with our simulation results. Surprisingly, however, the colloid packing fraction at criticality approaches its bulk ($D \to \infty$) value non-monotonically, as $D$ is increased. Far from the critical point, our results are compatible with the simple Kelvin equation, implying a shift of order 1/D in the coexistence colloid chemical potential. We also present density profiles and pair distribution functions for a number of state points on the binodal, and the influence of the colloid-wall interaction is studied.
description: 12 pages, 13 figures
ความมีประสิทธิภาพของพระราชบัญญัติส่งเสริมและรักษาคุณภาพสิ่งแวดล้อมแห่งชาติ พ.ศ.2535 ในการป้องกันและแก้ไขปัญหาสิ่งแวดล้อม
Creators: name: นฤมล เสกธีระ
Publisher: name: คณะนิติศาสตร์ มหาวิทยาลัยนเรศวร
Year: 2558
Subjects: ความมีประสิทธิภาพ, พระราชบัญญัติส่งเสริมและรักษาคุณภาพสิ่งแวดล้อมแห่งชาติ พ.ศ.2535,การป้องกันปัญหาสิ่งแวดล้อม, การแก้ไขปัญหาสิ่งแวดล้อม

description: 1, 8, วารสารนิติศาสตร์ มหาวิทยาลัยนเรศวร
"Universal" Distribution of Inter-Earthquake Times Explained
Creators: name: Saichev, A.
name: Sornette, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We propose a simple theory for the ``universal'' scaling law previously reported for the distributions of waiting times between earthquakes. It is based on a largely used benchmark model of seismicity, which just assumes no difference in the physics of foreshocks, mainshocks and aftershocks. Our theoretical calculations provide good fits to the data and show that universality is only approximate. We conclude that the distributions of inter-event times do not reveal more information than what is already known from the Gutenberg-Richter and the Omori power laws. Our results reinforces the view that triggering of earthquakes by other earthquakes is a key physical mechanism to understand seismicity.
description: 4 pages with two figures
The 800pc long tidal tails of the Hyades star cluster: Possible discovery of candidate epicyclic overdensities from an open star cluster
Creators: name: Jerabkova, Tereza
name: Boffin, Henri M. J.
name: Beccari, Giacomo
name: de Marchi, Guido
name: de Bruijne, Jos H. J.
name: Prusti, Timo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The tidal tails of stellar clusters provide an important tool for studying the birth conditions of the clusters and their evolution, coupling, and interaction with the Galactic potential. We present the N-body evolution of a Hyades-like stellar cluster with backward-integrated initial conditions on a realistic 3D orbit in the Milky Way computed within the AMUSE framework. For the first time, we explore the effect of the initial cluster rotation and the presence of lumps in the Galactic potential on the formation and evolution of tidal tails. We show that the tidal tails are not naturally clustered in any coordinate system. Models with initial rotation result in significant differences in the cluster mass loss and follow different angular momentum time evolution. The orientation of the tidal tails relative to the motion vector of the cluster and the current cluster angular momentum constrain the initial rotation of the cluster. We highlight the use of the convergent point (CP) method in searches for co-moving groups and introduce a new compact CP (CCP) method that accounts for internal kinematics based on an assumed model. Using the CCP method, we are able to recover candidate members of the Hyades tidal tails in the Gaia DR2 and eDR3 reaching a total extent of almost 1kpc. We confirm the previously noted asymmetry in the detected tidal tails. In the eDR3 data we recovered spatial overdensities in the leading and trailing tails that are kinematically consistent with being epicyclic overdensities and thus present candidates for the first such detection in an open star cluster. We show that the epicyclic overdensities are able to provide constraints not only on the cluster properties, but also on the Galactic potential. Finally, based on N-body simulations, a close encounter with a massive Galactic lump can explain the observed asymmetry in the tidal tails of the Hyades.(abriged)
description: A&A accepted: https://doi.org/10.1051/0004-6361/202039949, ESA press release (link active when published by A&A): https://www.esa.int/Science_Exploration/Space_Science/Gaia/Is_the_nearest_star_cluster_to_the_Sun_being_destroyed
Interval orders and reverse mathematics
Creators: name: Marcone, Alberto
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic (math.LO)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 03B30 (primary); 06A06, 03D45 (secondary)

description: We study the reverse mathematics of interval orders. We establish the logical strength of the implications between various definitions of the notion of interval order. We also consider the strength of different versions of the characterization theorem for interval orders: a partial order is an interval order if and only if it does not contain $2 \oplus 2$. We also study proper interval orders and their characterization theorem: a partial order is a proper interval order if and only if it contains neither $2 \oplus 2$ nor $3 \oplus 1$.
description: 21 pages; to appear in Notre Dame Journal of Formal Logic; minor changes from the previous version
Advocating for Preprint Sharing in Rwanda
Creators: name: Dine, Roseline Dzekem
name: Sindayigaya, Patience
name: Okafor, Izuchukwu
name: Lawan Adamu, Nuhu
name: Shitindo, Mercury
Publisher: name: My University
Year: 2024
Subjects: Open Science
Open Access
Preprint
Research
AfricArXiv
Webinar
Rwanda

description: This webinar focused on the benefits of preprints, how they support scientific progress, and the opportunities and challenges for preprint sharing in Rwanda specifically, and Africa at large. The session was open to everyone interested in open science, research, and preprint sharing, especially researchers, academics, librarians, students, and science enthusiasts in Rwanda, across Africa and the world.
description: Advocating for Preprint Sharing in Rwanda - AfricArXiv Open Science Webinar Series 2024
Dipole Radiation and Beyond from Axion Stars in Electromagnetic Fields
Creators: name: Amin, Mustafa A.
name: Long, Andrew J.
name: Mou, Zong-Gang
name: Saffin, Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the production of photons from coherently oscillating, spatially localized clumps of axionic fields (oscillons and axion stars) in the presence of external electromagnetic fields. We delineate different qualitative behaviour of the photon luminosity in terms of an effective dimensionless coupling parameter constructed out of the axion-photon coupling, and field amplitude, oscillation frequency and radius of the axion star. For small values of this dimensionless coupling, we provide a general analytic formula for the dipole radiation field and the photon luminosity per solid angle, including a strong dependence on the radius of the configuration. For moderate to large coupling, we report on a non-monotonic behavior of the luminosity with the coupling strength in the presence of external magnetic fields. After an initial rise in luminosity with the coupling strength, we see a suppression (by an order of magnitude or more compared to the dipole radiation approximation) at moderately large coupling. At sufficiently large coupling, we find a transition to a regime of exponential growth of the luminosity due to parametric resonance. We carry out 3+1 dimensional lattice simulations of axion electrodynamics, at small and large coupling, including non-perturbative effects of parametric resonance as well as backreaction effects when necessary. We also discuss medium (plasma) effects that lead to resonant axion to photon conversion, relevance of the coherence of the soliton, and implications of our results in astrophysical and cosmological settings.
description: 12 figures, 28 pages + 1 Appendix
Additional file 2 of Characterization of cotton ARF factors and the role of GhARF2b in fiber development
Creators: name: Zhang, Xiufang
name: Cao, Junfeng
name: Huang, Chaochen
name: Zheng, Zishou
name: Liu, Xia
name: Shangguan, Xiaoxia
name: Wang, Lingjian
name: Zhang, Yugao
name: Chen, Zhiwen
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S2. Expression patterns of ARF genes in G. hirsutum based on RNA-seq data. FPKM represents fragments per kilobase of exon model per million mapped reads. DPA, days post-anthesis.s.
Εμπόδια στην επιχειρηματικότητα των νέων: μια εμπειρική μελέτη
Creators: name: Κόλιας, Αναστάσιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Νεανική επιχειρηματικότητα
subject: Επιχειρείν
subject: Εμπόδια επιχειρηματικότητας

description: Η νεανική επιχειρηματικότητα έχει ενταχθεί στους περισσότερους κλάδους στον τομέα της οικονομίας, παρόλα αυτά η πλειοψηφία των νέων αντιμετωπίζουν εμπόδια και δυσκολίες που δεν τους δίνει το έναυσμα να πραγματοποιήσουν τα επιχειρηματικά τους σχέδια και οράματα. Στην παρούσα διπλωματική εργασία έγινε μελέτη για τα εμπόδια στην νεανική επιχειρηματικότητα, όπως επίσης έγινε και έρευνα για τους λόγους που οι νέοι δεν εφαρμόζουν τις ιδέες τους στον επιχειρηματικό κλάδο. Το ερωτηματολόγιο που διαμορφώθηκε για την συγκεκριμένη μελέτη, περιλαμβάνει δημογραφικές ερωτήσεις αλλά και ερωτήσεις ως προς την επιχειρηματικότητα. Την έρευνα το συμπλήρωσαν 50 φοιτητές του Μεταπτυχιακού Προγράμματος του Πανεπιστημίου Πειραιώς «Οικονομική και Επιχειρησιακή Στρατηγική» . Παρουσιάζονται επίσης σε θεωρητικό πλαίσιο τα εμπόδια της νεανικής επιχειρηματικότητας από την ξένη και την ελληνική βιβλιογραφία, με στόχο την σύγκριση με τα ερευνητικά αποτελέσματα. Ακόμα αναφέρονται οι δείκτες τις επιχειρηματικότητας και οι πηγές χρηματοδότησης των επιχειρήσεων. Εν τέλει, προέκυψε ότι τα πιο σημαντικά εμπόδια της νεανικής επιχειρηματικότητας είναι το οικονομικό περιβάλλον και η ανεύρεση χρηματοδότησης.
title: ÐÑÑÑÐ°Ñ ÑÐºÐ¾Ð»Ð° Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ: Ðº Ð¿ÑÑÐ¸Ð»ÐµÑÐ¸Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ
Creators: name: ÐÐºÑÐµÐ½Ð¾Ð², ÐÐµÐ¾Ð½Ð¸Ð´
name: ÐÑÑÐµÐ½ÑÑÐµÐ²Ð°, ÐÑÐµÐ½Ð¸Ñ
name: ÐÐ°ÑÐ¸Ð»ÑÐµÐ², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
name: ÐÐ°ÑÑÐº, ÐÐ¼Ð¸ÑÑÐ¸Ð¹
name: ÐÐ»Ð¸ÑÐµÐµÐ², ÐÐ¸ÑÐ¸Ð»Ð»
name: ÐÐ°Ð²Ð½ÐµÑ, ÐÐ¸Ð»Ð°Ð½Ð°
name: ÐÐ¸ÐµÐ², ÐÐ»Ð°Ð´Ð¸ÑÐ»Ð°Ð²
name: ÐÐ¾ÑÐ¾ÑÐºÐ¸Ñ, ÐÐ¸ÑÐ°Ð¸Ð»
name: ÐÑÐ·Ð¸Ð½, ÐÐ»ÐµÐºÑÐµÐ¹
name: ÐÑÐ½ÐºÐ¸Ð½, Ð¡ÐµÑÐ³ÐµÐ¹
name: ÐÑÐ±Ð¾Ð¼ÑÐ´ÑÐ¾Ð², Ð¡ÐµÑÐ³ÐµÐ¹
name: ÐÐ¾ÑÐºÐ°Ð»ÐµÑ, ÐÑÑÐµÐ¼
name: ÐÐ¾Ð»Ð¾Ð½ÑÐºÐ¸Ð¹, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
name: Ð Ð°Ð´ÐºÐµÐ²Ð¸Ñ, ÐÐ¸ÑÐ°Ð¸Ð»
name: Ð¢Ð°ÑÐ°ÑÐµÐ½ÐºÐ¾, ÐÐ»ÐµÐ½Ð°
name: Ð¢ÑÐ¿Ð¸ÐºÐ¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: Ð¥Ð»Ð¾Ð¿ÐºÐ¾Ð², ÐÐ»Ð¸ÑÐµÐ¹
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2024
Subjects: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
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description: Ð ÑÐ±Ð¾ÑÐ½Ð¸ÐºÐµ ÑÑÐ°ÑÐµÐ¹, Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð½Ð¾Ð¼ Ð¿ÑÑÐ¸Ð»ÐµÑÐ¸Ñ ÐÑÑÑÐµÐ¹ ÑÐºÐ¾Ð»Ñ Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ, Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ ÑÑÐ°Ð¿Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ ÐºÐ°ÑÐµÐ´Ñ Ð¼ÐµÑÐ°Ð½Ð¸ÐºÐ¾-Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÐºÑÐ»ÑÑÐµÑÐ°, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð² 2019 Ð³. Ð²Ð¾ÑÐ»Ð¸ Ð² ÑÐ¾ÑÑÐ°Ð² ÐÑÑÑÐµÐ¹ ÑÐºÐ¾Ð»Ñ Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ ÐÐ½ÑÑÐ¸ÑÑÑÐ° Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ, Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð¸ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ° ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾. Ð Ð°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÐ¹ Ð¸ÑÑÐ¾ÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÐµÑÐ¸Ð¾Ð´, Ð¾Ñ Ð¾ÑÐºÑÑÑÐ¸Ñ Ð² ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐµ Ð¼ÐµÑÐ°Ð½Ð¸ÐºÐ¾-Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÐºÑÐ»ÑÑÐµÑÐ° Ð² 1907 Ð³., ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ ÑÐ½Ð¸ÐºÐ°Ð»ÑÐ½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ Ð¾ Ð¿Ð¾ÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½ÑÑ ÑÑÐ°Ð¿Ð°Ñ ÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¸Ñ Ð½Ð°ÑÑÐ½ÑÑ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¹. ÐÐ°ÐµÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð½Ð°ÑÑÐ½Ð¾Ð³Ð¾ Ð½Ð°ÑÐ»ÐµÐ´Ð¸Ñ, ÑÐ¾Ð·Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐµÐ´ÑÐµÑÑÐ²ÑÑÑÐ¸Ð¼Ð¸ Ð¿Ð¾ÐºÐ¾Ð»ÐµÐ½Ð¸ÑÐ¼Ð¸ Ð´ÐµÐºÐ°Ð½Ð¾Ð², Ð·Ð°Ð²ÐµÐ´ÑÑÑÐ¸Ñ ÐºÐ°ÑÐµÐ´ÑÐ°Ð¼Ð¸, Ð¿ÑÐ¾ÑÐµÑÑÐ¾ÑÐ°Ð¼Ð¸, ÑÑÐµÐ½ÑÐ¼Ð¸ Ð¸ Ð¿ÑÐµÐ¿Ð¾Ð´Ð°Ð²Ð°ÑÐµÐ»ÑÐ¼Ð¸. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ ÐÑÑÑÐ°Ñ ÑÐºÐ¾Ð»Ð° Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ â ÑÑÐ¾ ÐºÐ¾Ð»Ð»ÐµÐºÑÐ¸Ð² Ð²ÑÑÐ¾ÐºÐ¾ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð², Ð¾Ð±ÐµÑÐ¿ÐµÑÐ¸Ð²Ð°ÑÑÐ¸Ð¹ Ð¿ÑÐµÐµÐ¼ÑÑÐ²ÐµÐ½Ð½Ð¾ÑÑÑ Ð½Ð°ÑÑÐ½ÑÑ ÑÐºÐ¾Ð», Ð²ÐµÐ´ÑÑÐ¸Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð² Ð² ÑÐ¸ÑÐ¾ÐºÐ¾Ð²Ð¾ÑÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð½ÑÑ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÑ Ð¾ÑÐµÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð¿Ð¾ÑÑÑÐµÑÑ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð¸Ð·Ð²ÐµÑÑÐ½ÑÑ Ð¿ÑÐ¾ÑÐµÑÑÐ¾ÑÐ¾Ð² Ñ ÐºÑÐ°ÑÐºÐ¸Ð¼Ð¸ Ð±Ð¸Ð¾Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ð¼Ð¸ Ð´Ð°Ð½Ð½ÑÐ¼Ð¸.
Dynamical dust traps in misaligned circumbinary discs: analytical theory and numerical simulations
Creators: name: Longarini, Cristiano
name: Lodato, Giuseppe
name: Toci, Claudia
name: Aly, Hossam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observations have shown that circumbinary discs can be misaligned with respect to the binary orbital plane.The lack of spherical symmetry, together with the non-planar geometry of these systems, causes differential precession which might induce the propagation of warps. While gas dynamics in such environments is well understood, little is known about dusty discs. In this work, we analytically study the problem of dust traps formation in misaligned circumbinary discs. We find that pile-ups may be induced not by pressure maxima, as the usual dust traps, but by a difference in precession rates between the gas and dust. Indeed, this difference makes the radial drift inefficient in two locations, leading to the formation of two dust rings whose position depends on the system parameters. This phenomenon is likely to occur to marginally coupled dust particles $(\text{St}\gtrsim1)$ as both the effect of gravitational and drag force are considerable. We then perform a suite of three-dimensional SPH numerical simulations to compare the results with our theoretical predictions. We explore the parameter space, varying stellar mass ratio, disc thickness, radial extension, and we find a general agreement with the analytical expectations. Such dust pile-up prevents radial drift, fosters dust growth and may thus promote the planet formation in circumbinary discs.
description: Accepted for publication in MNRAS, 12 pages, 12 figures, 2 tables, 2 appendices
Extensive development of the Canadian Prairies : a micro analysis of the influence of technical change
Creators: name: Ward, Anthony John
Publisher: name: University of British Columbia
Year: 2011

description: This thesis examines the rate and pattern of settlement of the Canadian Prairies over the period of the 'Wheat Boom'. The principal aim of the work Is to explain the economic reasons for the late start to that settlement. Economic growth of the Canadian Prairies did not begin until almost the turn of the 20th. century, long after the initial occupation of the American West. I hypothesise in this thesis that the delay in the development of the Canadian Prairies was principally due to an initial lack of appropriate technology. The growing season In Canada is shorter than that further south, leaving grain farmers with little time to sow in spring and harvest In the fall. The technology available in 1880 enabled farmers to crop less than 50 acres even in the best areas, making farming uneconomical over most of the Prairie area. The technology available to the Prairie farmer over the period is carefully examined to determine the effects of various changes which occurred. In order to analyze the implications of technological change, a number of representative Prairie farms are modelled using the technique of dynamic linear programming. Five locations which were first occupied on different dates are analyzed, and for each location the value of capitalised rent for a typical new farm is calculated on four dates. The results of these calculations show that in 1880 most Prairie land was economically worthless. Over time all the hypothetical farms showed Increases in value, and settlement appears to have occurred on approximately the date at which the calculated value of the land rose above zero. The reasons for the increases in the value of the land are examined, and the most important exogenous change appears to have been the improvement of mechanical farming equipment. The development of appropriate 'dry-farming' techniques was also important, but it is argued that this was endogenous to Prairie growth. Wheat prices did not begin to increase until about 1904 and therefore were not a cause of the start of the 'Wheat Boom', although they contribute significantly to farming profits by 1910.
Phase Transition in a Three-States Reaction-Diffusion System
Creators: name: Jafarpour, F H
name: Ghavami, B
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A one-dimensional reaction-diffusion model consisting of two species of particles and vacancies on a ring is introduced. The number of particles in one species is conserved while in the other species it can fluctuate because of creation and annihilation of particles. It has been shown that the model undergoes a continuous phase transition from a phase where the currents of different species of particles are equal to another phase in which they are different. The total density of particles and also their currents in each phase are calculated exactly.
description: 6 pages
Urea in animal feed: a source of protein
Creators: name: Deepak Kumar Chaurasia
Publisher: name: Bio Vet Innovator Magazine
Year: 2024

description: About 70 per cent of the cost of raising livestock is spent on animal feed. A good animal feed and green fodder are required for the health and production of animals, but green fodder is not available throughout the year but an adequate amount of protein can be provided in the diet of animals. Therefore, along with dry fodder the animals should also be given protein sources which are mainly obtained from chuni, bran, khaliya and urea sources. Urea is a nonprotein nitrogen compound. Urea provides the extra nitrogen required for the use of dry matter. Nitrogen must be present to maintain adequate amounts of ammonia in the rumen. Urea contains about 46 percent nitrogen. One kilogram of urea contains 7-8 kilograms of nitrogen. Converts urea into protein through the production of ammonia and carbon dioxide in cattle and other ruminants, Urea enhances the nutrition, taste and digestibility of husk.
A predictive formulation of the Nambu--Jona-Lasinio model
Creators: name: Battistel, O. A.
name: Dallabona, G.
name: Krein, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A novel strategy to handle divergences typical of perturbative calculations is implemented for the Nambu--Jona-Lasinio model and its phenomenological consequences investigated. The central idea of the method is to avoid the critical step involved in the regularization process, namely the explicit evaluation of divergent integrals. This goal is achieved by assuming a regularization distribution in an implicit way and making use, in intermediary steps, only of very general properties of such regularization. The finite parts are separated of the divergent ones and integrated free from effects of the regularization. The divergent parts are organized in terms of standard objects which are independent of the (arbitrary) momenta running in internal lines of loop graphs. Through the analysis of symmetry relations, a set of properties for the divergent objects are identified, which we denominate consistency relations, reducing the number of divergent objects to only a few ones. The calculational strategy eliminates unphysical dependencies of the arbitrary choices for the routing of internal momenta, leading to ambiguity-free, and symmetry-preserving physical amplitudes. We show that the imposition of scale properties for the basic divergent objects leads to a critical condition for the constituent quark mass such that the remaining arbitrariness is removed. The model become predictive in the sense that its phenomenological consequences do not depend on possible choices made in intermediary steps. Numerical results are obtained for physical quantities at the one-loop level for the pion and sigma masses and pion-quark and sigma-quark coupling constants.
description: 38 pages, 1 figure, To appear in Phy.Rev.D
The Balloon-Borne Cryogenic Telescope Testbed Mission: Bulk Cryogen Transfer at 40 km Altitude
Creators: name: Kogut, A.
name: Denker, S.
name: Bellis, N.
name: Essinger-Hileman, T.
name: Lowe, L.
name: Mirel, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Balloon-Borne Cryogenic Telescope Testbed (BOBCAT) is a stratospheric balloon payload to develop technology for a future cryogenic suborbital observatory. A series of flights are intended to establish ultra-light dewar performance and open-aperture observing techniques for large (3--5 meter diameter) cryogenic telescopes at infrared wavelengths. An initial flight in 2019 demonstrated bulk transfer of liquid nitrogen and liquid helium at stratospheric altitudes. An 827 kg payload carried 14 liters of liquid nitrogen (LN2) and 268 liters of liquid helium (LHe) in pressurized storage dewars to an altitude of 39.7 km. Once at float altitude, liquid nitrogen transfer cooled a separate, unpressurized bucket dewar to a temperature of 65 K, followed by the transfer of 32 liters of liquid helium from the storage dewar into the bucket dewar. Calorimetric tests measured the total heat leak to the LHe bath within bucket dewar. A subsequent flight will replace the receiving bucket dewar with an ultra-light dewar of similar size to compare the performance of the ultra-light design to conventional superinsulated dewars.
description: 17 pages including 10 figures
Additional file 11 of Circular RNA hsa_circ_0004872 inhibits gastric cancer progression via the miR-224/Smad4/ADAR1 successive regulatory circuit
Creators: name: Ma, Cunying
name: Wang, Xiaoying
name: Yang, Fenghua
name: Zang, Yichen
name: Liu, Jiansong
name: Wang, Xinyi
name: Xu, Xia
name: Li, Wenjuan
name: Jia, Jihui
name: Liu, Zhifang
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 11: Table S3. Primer sequences in this study.
Full Counting Statistics for Number of Electrons Dwelling in a Quantum Dot
Creators: name: Utsumi, Yasuhiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent real-time electron counting experiments, we evaluate the full counting statistics (FCS) for the probability distribution of the electron number inside a quantum dot which is weakly coupled to source and drain leads. A non-Gaussian exponential distribution appears when there is no dot state close to the lead chemical potentials. We propose the measurement of the joint probability distribution of current and electron number, which reveals correlations between the two observables. We also show that for increasing strength of tunneling, the quantum fluctuations qualitatively change the probability distribution of the electron number. In this paper, we derive the cumulant generating functions (CGFs) of the joint probability distribution for several cases. The Keldysh generating functional approach is adopted to obtain the CGFs for the resonant-level model and for the single-electron transistor in the intermediate conductance regime. The general form for the CGF of the joint probability distribution is provided within the Markov approximation in an extension of the master equation approach [D. A. Bagrets, and Yu. V. Nazarov, Phys. Rev. B {\bf 67}, 085316 (2003)].
description: 10 pages, 6 figures, formal part extended; to appear in Phys. Rev. B
Energy of a Stringy Charged Black Hole in the Teleparallel Gravity
Creators: name: Salti, Mustafa
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper has been removed by arXiv administrators because it plagiarizes gr-qc/0212018, gr-qc/0501002, and gr-qc/9601044. This paper has excessive overlap with the following papers also written by the authors or their collaborators: gr-qc/0603108, gr-qc/0606022, gr-qc/0603027, gr-qc/0603063, gr-qc/0607083, gr-qc/0607095, gr-qc/0511030, gr-qc/0512080, gr-qc/0601141, gr-qc/0608050, gr-qc/0607082, gr-qc/0511095, gr-qc/0612016, and others.
description: This submission has been withdrawn by arXiv administrators due to inappropriate text reuse from external sources
Protecting GNSS-based Services using Time Offset Validation
Creators: name: Zhang, K.
name: Spanghero, M.
name: Papadimitratos, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Global navigation satellite systems (GNSS) provide pervasive accurate positioning and timing services for a large gamut of applications, from Time based One-Time Passwords (TOPT), to power grid and cellular systems. However, there can be security concerns for the applications due to the vulnerability of GNSS. It is important to observe that GNSS receivers are components of platforms, in principle having rich connectivity to different network infrastructures. Of particular interest is the access to a variety of timing sources, as those can be used to validate GNSS-provided location and time. Therefore, we consider off-the-shelf platforms and how to detect if the GNSS receiver is attacked or not, by cross-checking the GNSS time and time from other available sources. First, we survey different technologies to analyze their availability, accuracy, and trustworthiness for time synchronization. Then, we propose a validation approach for absolute and relative time. Moreover, we design a framework and experimental setup for the evaluation of the results. Attacks can be detected based on WiFi supplied time when the adversary shifts the GNSS provided time, more than 23.942us; with Network Time Protocol (NTP) supplied time when the adversary-induced shift is more than 2.046ms. Consequently, the proposal significantly limits the capability of an adversary to manipulate the victim GNSS receiver.
Δημιουργία τμήματος HR σε εταιρεία εμπορίας πληροφορικής: πως η δημιουργία του θα επηρεάσει την στρατηγική της επιχείρησης
Creators: name: Μόντινος, Όμηρος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Διοίκηση ανθρώπινου δυναμικού
subject: Human resource management
subject: Εκπαίδευση προσωπικού
subject: Στρατηγική διοίκηση ανθρώπινου δυναμικού

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι να εξετάσει πως η δημιουργία τμήματος ανθρωπίνου δυναμικού σε εταιρεία που δραστηριοποιείται στον κλάδο της πληροφορικής, θα συμβάλει στην επίτευξη των εταιρικών στόχων. Προς επίτευξη αυτού, διενεργήθηκε ποιοτική έρευνα με χρήση ερωτηματολογίων ανοικτού τύπου, σε συγκεκριμένο αριθμό ατόμων που εργάζονται και δραστηριοποιούνται στο κλάδο της τεχνολογίας και του ανθρωπίνου δυναμικού. Όπως καταδείχθηκε, η δημιουργία ενός τμήματος ανθρωπίνου δυναμικού συμβάλει τα μέγιστα στην ανάπτυξη της στρατηγικής της εταιρείας μέσω των στοχευμένων ενεργειών και διαδικασιών που επιτελεί το τμήμα ανθρωπίνου δυναμικού.
The Structural Evolution of Isolated Galaxies at Low Redshift in the IllustrisTNG Simulation
Creators: name: Walters, Dan
name: Woo, Joanna
name: Ellison, Sara L.
name: Hani, Maan H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the structural evolution of isolated star-forming galaxies in the Illustris TNG100-1 hydrodynamical simulation, with a focus on investigating the growth of the central core density within 2 kpc ($Σ_{*,2kpc}$) in relation to total stellar mass ($M_*$) at z < 0.5. First, we show that several observational trends in the $Σ_{*,2kpc}$-$M_*$ plane are qualitatively reproduced in IllustrisTNG, including the distributions of AGN, star forming galaxies, quiescent galaxies, and radial profiles of stellar age, sSFR, and metallicity. We find that galaxies with dense cores evolve parallel to the $Σ_{*,2kpc}$-$M_*$ relation, while galaxies with diffuse cores evolve along shallower trajectories. We investigate possible drivers of rapid growth in $Σ_{*,2kpc}$ compared to $M_*$. Both the current sSFR gradient and the BH accretion rate are indicators of past core growth, but are not predictors of future core growth. Major mergers (although rare in our sample; $\sim$10%) cause steeper core growth, except for high mass ($M_*$ >$\sim$ $10^{10} M_{\odot}$) mergers, which are mostly dry. Disc instabilities, as measured by the fraction of mass with Toomre Q < 2, are not predictive of rapid core growth. Instead, rapid core growth results in more stable discs. The cumulative black hole feedback history sets the maximum rate of core growth, preventing rapid growth in high-mass galaxies ($M_*$ >$\sim$ $10^{9.5} M_{\odot}$). For massive galaxies the total specific angular momentum of accreting gas is the most important predictor of future core growth. Our results suggest that the angular momentum of accreting gas controls the slope, width and zero-point evolution of the $Σ_{*,2kpc}$-$M_*$ relation.
description: Accepted for publication in MNRAS
Εφαρμογές της τριδιάστατης εκτύπωσης στον κλάδο της κατασκευής επίπλων
Creators: name: Ντίτσου, Αικατερίνη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Furniture
subject: 3d printing
subject: Τρισδιάστατη εκτύπωση επίπλων
subject: Έπιπλα

description: Το θέμα προς ανάλυση της παρούσας διπλωματικής εργασίας είναι η ένταξη της τεχνολογίας της τριδιάστατης (3D) εκτύπωσης στην επιπλοποιία. Η τριδιάστατη εκτύπωση είναι μια νέα τεχνολογία που εξελίσσεται με ραγδαίους ρυθμούς και έχει ενταχθεί σε διάφορους τομείς οικονομικής δραστηριότητας, όπως η αρχιτεκτονική, η αμυντική βιομηχανία, η αυτοκινητοβιομηχανία, η αρχαιολογία, η παραγωγή ενδυμάτων και η παροχή υπηρεσιών υγείας. Η δομή ενός συμβατικού τριδιάστατου εκτυπωτή είναι τόσο απλή, ώστε ένας απλός χρήστης μπορεί να συναρμολογήσει τον δικό του. Η απλή δομή του εκτυπωτή δίνει επίσης στον χειριστή την δυνατότητα να επέμβει και με τις κατάλληλες τροποποιήσεις, να δημιουργήσει ένα μηχάνημα που να καλύπτει τις απαιτήσεις του, όπως να εκτυπώνει αντικείμενα σε μεγάλες διαστάσεις. Η κατασκευή επίπλων αποτελεί μια παραδοσιακή ανθρώπινη δραστηριότητα και η σχετική τεχνολογία κατασκευής εξελίσσεται συνεχώς. Αξίζει να σημειωθεί ότι σημαντικό ρόλο στο σχεδιασμό και την παραγωγή των σύγχρονων επίπλων παίζει η εργονομική μελέτη και η εφαρμογή των σχετικών αρχών, έτσι ώστε να επιτυγχάνεται η μέγιστη δυνατή άνεση και ασφάλεια. Η τριδιάστατη εκτύπωση αποτελεί σχετικά νέα μέθοδο στον κλάδο της επιπλοποιίας και τα περισσότερα, αν όχι όλα, τα παραδείγματα εφαρμογών συνδέονται με πρωτότυπο, εξειδικευμένο εξοπλισμό 3D εκτύπωσης. Τα έπιπλα που έχουν κατασκευασθεί με τη συγκεκριμένη μέθοδο θεωρούνται μοναδικά και καινοτόμα, ενώ πολλά από αυτά έχουν παρουσιασθεί και βραβευθεί σε εκθέσεις σχεδιασμού επίπλων. Μέρη ή εξαρτήματα επίπλων τριδιάστατης εκτύπωσης μπορεί να κατασκευασθούν από ποικιλία υλικών όπως διαφόρων ειδών πλαστικά/πολυμερή, ελαστικά υλικά, κεραμικά και μέταλλα (πολύτιμα και μη). Στην παρούσα εργασία παρουσιάζονται συνοπτικά τα βασικά χαρακτηριστικά της τριδιάστατη εκτύπωσης καθώς οι καθιερωμένες μέθοδοι σχεδιασμού και κατασκευής επίπλων. Στη συνέχεια παρουσιάζονται αναλυτικά διάφορες περιπτώσεις εφαρμογής της τεχνολογίας στην επιπλοποιία. Τέλος, παρουσιάζεται αναλυτικά η διαδικασία σχεδιασμού μιας περσίδας επίπλου μίνι μπαρ, καθώς και τα αποτελέσματα μια πρώτης ανάλυσης της δυνατότητας κατασκευής αυτής με μεθόδους 3D εκτύπωσης.
The concept of correlated density and its application
Creators: name: Morawetz, Klaus
name: Lipavský, Pavel
name: Koláček, Jan
name: Brandt, Ernst Helmut
name: Schreiber, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The correlated density appears in many physical systems ranging from dense interacting gases up to Fermi liquids which develop a coherent state at low temperatures, the superconductivity. One consequence of the correlated density is the Bernoulli potential in superconductors which compensates forces from dielectric currents. This Bernoulli potential allows to access material parameters. Though within the surface potential these contributions are largely canceled, the bulk measurements with NMR can access this potential. Recent experiments are explained and new ones suggested. The underlying quantum statistical theory in nonequilibrium is the nonlocal kinetic theory developed earlier.
description: 14 pages, CMT30 proceedings
Despeckling Sentinel-1 GRD images by deep learning and application to narrow river segmentation
Creators: name: Gasnier, Nicolas
name: Dalsasso, Emanuele
name: Denis, Loïc
name: Tupin, Florence
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper presents a despeckling method for Sentinel-1 GRD images based on the recently proposed framework "SAR2SAR": a self-supervised training strategy. Training the deep neural network on collections of Sentinel 1 GRD images leads to a despeckling algorithm that is robust to space-variant spatial correlations of speckle. Despeckled images improve the detection of structures like narrow rivers. We apply a detector based on exogenous information and a linear features detector and show that rivers are better segmented when the processing chain is applied to images pre-processed by our despeckling neural network.
Mass-ratio and Magnetic Flux-Dependence of Modulated Accretion from Circumbinary Disks
Creators: name: Noble, Scott C.
name: Krolik, Julian H.
name: Campanelli, Manuela
name: Zlochower, Yosef
name: Mundim, Bruno C.
name: Nakano, Hiroyuki
name: Zilhão, Miguel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Accreting supermassive binary black holes (SMBBHs) are potential multi-messenger sources because they emit both gravitational wave and electromagnetic (EM) radiation. Past work has shown that their EM output may be periodically modulated by an asymmetric density distribution in the circumbinary disk, often called an "overdensity" or "lump;" this modulation could possibly be used to identify a source as a binary. We explore the sensitivity of the overdensity to SMBBH mass ratio and magnetic flux through the accretion disk. We find that the relative amplitude of the overdensity and its associated EM periodic signal both degrade with diminishing mass ratio, vanishing altogether somewhere between 1:2 and 1:5. Greater magnetization also weakens the lump and any modulation of the light output. We develop a model to describe how lump formation results from internal stress degrading faster in the lump region than it can be rejuvenated through accretion inflow, and predicts a threshold value in specific internal stress below which lump formation should occur and which all our lump-forming simulations satisfy. Thus, detection of such a modulation would provide a constraint on both mass-ratio and magnetic flux piercing the accretion flow.
description: 32 pages, 30 color figures. Submitted to the Astrophysical Journal. Movies may be found at https://youtube.com/playlist?list=PLNaEA0qwDBaeApzLr2oarVKiO3AFnklTV
Universal dynamics of magnetic monopoles in two-dimensional kagomé ice
Creators: name: Takatsu, Hiroshi
name: Goto, Kazuki
name: Otsuka, Hiromi
name: Sato, Taku J.
name: Lynn, Jeffrey W.
name: Matsubayashi, Kazuyuki
name: Uwatoko, Yoshiya
name: Higashinaka, Ryuji
name: Matsuhira, Kazuyuki
name: Hiroi, Zenji
name: Kadowaki, Hiroaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A magnetic monopole in spin ice is a novel quasiparticle excitation in condensed matter physics, and we found that the ac frequency dependent magnetic susceptibility $χ(ω)$ in the two-dimensional (2D) spin ice (so-called kagomé ice) of Dy$_2$Ti$_2$O$_7$ shows a single scaling form. This behavior can be understood in terms of the dynamical scaling law for 2D Coulomb gas (CG) systems [Phys. Rev. B 90, 144428 (2014)], characterized by the charge correlation length $ξ(\propto1/\sqrt{ω_1})$, where $ω_{1}$ is a characteristic frequency proportional to the peak position of the imaginary part of $χ(ω)$. It is a generic behavior among a wide variety of models such as the vortex dynamics of 2D superconductors, 2D superfluids, classical XY magnets, and dynamics of melting of Wigner crystals.
description: 5 pages, 4 figures, Supplemental Material