cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Variational formulation of Eisenhart's unified theory
Creators: name: Poplawski, Nikodem J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Eisenhart's classical unified field theory is based on a non-Riemannian affine connection related to the covariant derivative of the electromagnetic field tensor. The sourceless field equations of this theory arise from vanishing of the torsion trace and the symmetrized Ricci tensor. We formulate Eisenhart's theory from the metric-affine variational principle. In this formulation, a Lagrange multiplier constraining the torsion becomes the source for the Maxwell equations.
description: 7 pages; published version
MADANIYATLARNING O'ZARO TA`SIRI. ENKULTURATSIYA VA AKKULTURATSIYA JARAYONLARI
Creators: name: Isayeva Shoira Boltabayevna, filologiya fanlari nomzodi, Toshkent davlat o'zbek tili va adabiyoti universiteti O'zga tilli guruhlarda o'zbek tili ta'limi  kafedrasi dotsenti
name: Shirinova Yekaterina Turakulovna, filologiya fanlari bo'yicha falsafa doktori (PhD), Toshkent davlat o'zbek tili va adabiyoti universiteti O'zga tilli guruhlarda o'zbek tili ta'limi kafedrasi katta o'qituvchisi
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqolada madaniyat tushunchasining izohi keltiriladi, madaniyatlarning o‘zaro ta`siri, enkulturatsiya va akkulturatsiya jaroyonlari yoritiladi. Mazkur jarayonlarning asosiy farqlari, madaniyatlarning o‘zaro ta`siri natijasida madaniyatlarda qanday o‘zgarishlar sodir bo‘lishi xususida ma`lumot beriladi.

Kalit so‘zlar: madaniyat, enkulturatsiya, akkulturatsiya, assimilyatsiya, separatizatsiya, marginalizatsiya, integratsiya, akseptatsiya, yangi madaniyatning shakllanishi, reaksiya....
Efficient Multi-Contact Pattern Generation with Sequential Convex Approximations of the Centroidal Dynamics
Creators: name: Ponton, Brahayam
name: Khadiv, Majid
name: Meduri, Avadesh
name: Righetti, Ludovic
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper investigates the problem of efficient computation of physically consistent multi-contact behaviors. Recent work showed that under mild assumptions, the problem could be decomposed into simpler kinematic and centroidal dynamic optimization problems. Based on this approach, we propose a general convex relaxation of the centroidal dynamics leading to two computationally efficient algorithms based on iterative resolutions of second order cone programs. They optimize centroidal trajectories, contact forces and, importantly, the timing of the motions. We include the approach in a kino-dynamic optimization method to generate full-body movements. Finally, the approach is embedded in a mixed-integer solver to further find dynamically consistent contact sequences. Extensive numerical experiments demonstrate the computational efficiency of the approach, suggesting that it could be used in a fast receding horizon control loop. Executions of the planned motions on simulated humanoids and quadrupeds and on a real quadruped robot further show the quality of the optimized motions.
How to Introduce Time Operator
Creators: name: Wang, Zhi-Yong
name: Xiong, Cai-Dong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time operator can be introduced by three different approaches: by pertaining it to dynamical variables; by quantizing the classical expression of time; taken as the restriction of energy shift generator to the Hilbert space of a physical system.
description: 17 pages, accepted to be published in Annals of Physics
An Overview of Return-Path Ellipsometry
Creators: name: Chen, Chia-Wei
Publisher: name: Karlsruhe
Year: 2019

description: Ellipsometry is an optical method used for characterizing materials and thin films. The principle is based on the polarization change at a sample due to the reflection or transmission at boundaries. By the measurement of the amplitude ratio Ψ and the phase difference Δ, the complex refractive index can be obtained. Ellipsometers can be used in various industries, e.g., semiconductor, chemistry, and display industry. The typical applications are quality control of film growth and defect inspection. In the configuration of return-path ellipsometry (RPE), the light beam is reflected twice from the sample. Thus, RPE has a higher sensitivity to the optical properties of samples. Some configurations of RPE have high tilt tolerance which is an important requirement for inline measurement. This report gives an introduction to the principle of ellipsometry and an overview of four different types of RPE.
All 2D Heterostructure Tunnel Field Effect Transistors: Impact of Band Alignment and Heterointerface Quality
Creators: name: Nakamura, Keigo
name: Nagamura, Naoka
name: Ueno, Keiji
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Nagashio, Kosuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Van der Waals heterostructures are the ideal material platform for tunnel field effect transistors (TFETs) because a band-to-band tunneling (BTBT) dominant current is feasible at room temperature (RT) due to ideal, dangling bond free heterointerfaces. However, achieving subthreshold swing (SS) values lower than 60 mVdec-1 of the Boltzmann limit is still challenging. In this work, we systematically studied the band alignment and heterointerface quality in n-MoS2 channel heterostructure TFETs. By selecting a p+-MoS2 source with a sufficiently high doping level, stable gate modulation to a type III band alignment was achieved regardless of the number of MoS2 channel layers. For the gate stack formation, it was found that the deposition of Al2O3 as the top gate introduces defect states for the generation current under reverse bias, while the integration of an h-BN top gate provides a defect-free, clean interface, resulting in the BTBT dominant current even at RT. All 2D heterostructure TFETs produced by combining the type III n-MoS2/p+-MoS2 heterostructure with the h-BN top gate insulator resulted in low SS values at RT.
Recent Developments on Ising and Chiral Potts Model
Creators: name: Perk, Jacques H. H.
name: Au-Yang, Helen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: After briefly reviewing selected Ising and chiral Potts model results, we discuss a number of properties of cyclic hypergeometric functions which appear naturally in the description of the integrable chiral Potts model and its three-dimensional generalizations.
description: LaTeX2e, 11 pages, 3 eps figures, 23rd International Conference of Differential Geometric Methods in Theoretical Physics, Nankai 2005
Νομολογιακές εφαρμογές διαδικαστικού χαρακτήρα κατά τη διαδικασία της εκουσίας δικαιοδοσίας
Creators: name: Πάσχου, Ουρανία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Νομολογία
Eκουσία δικαιοδοσία
Διαδικαστικός χαρακτήρας
ex parte jurisdiction
Jurisprudence
litigation law

description: Σκοπός της διατριβής ήταν η παρουσίαση των αποκλίσεων διαδικαστικού χαρακτήρα, οι οποίες διέπουν την εκουσία δικαιοδοσία, ως ένα ιδιαίτερο είδος διαδικασίας στην οποία δεν υπάρχει κατά κανόνα αντιδικία, σε σύγκριση με την αμφισβητούμενη, μέσα από τη μελέτη της ελληνικής νομολογίας. Εξετάσαμε αρχικά τις αποκλίσεις που άπτονται της αποδεικτικής διαδικασίας, όπως την αυτεπάγγελτη έρευνα γεγονότων, τον παραμερισμό της αρχής της διαθέσεως και την κάμψη της ισχύος του συγκεντρωτικού συστήματος και την ελεύθερη απόδειξη. Στη συνέχεια παρουσιάσαμε αναλυτικά την έννοια του διαδίκου στην εκουσία δικαιοδοσία τους τρόπους κτήσης αυτής και τις συνέπειες με τις οποίες συνδέεται η κτήση της ιδιότηταw του διαδίκου. Ακόμη αναφερθήκαμε αναλυτικά στις προϋποθέσεις και τις διακρίσεις της νόμιμης παρέμβασης και προσεπίκλησης. Ένα άλλο θέμα που θίξαμε ήταν το είδος, οι συνέπειες και τα ένδικα μέσα ή ένδικα βοηθήματα εις βάρος της εκδοθησόμενης απόφασης, ενώ ασχοληθήκαμε επιπλέον με το δεδικασμένο και τη δεσμευτική ενέργεια της δικαστικής αποφάσεως, η οποία εκδόθηκε κατά τη διαδικασία της εκουσίας δικαιοδοσίας και τις προϋποθέσεις υπό τις ποίες αυτή μπορεί να ανακληθεί ή να μεταρρυθμιστεί.
description: The aim of the present thesis was the study of the notable differences in litigation law and especially in ex parte jurisdiction, as a special form of procedure, in which by default there is no litigation, depending on its special nature in civil court, compared to the contentious jurisdiction, through the practice of the Greek jurisprudence. We examined the main principles related to the evidence, such as ex officio investigation and other main principles, which govern ex parte jurisdiction related to evidence and material facts .Then we presented the meaning of the term “litigant” in the aforementioned procedure, the way a person can acquire this quality and the consequences and advantages with which a litigant is entitled. Furthermore, we analyzed the preconditions that are to be fulfilled for intervention and invitation to participate in the case pending and we examined the means of appeal, ordinary or exceptional, conferred upon a person. We also examined the judgement’s binding effect, the means to set it aside as opposed to res judicata and final judgment.
Non-relativistic three-dimensional supergravity theories and semigroup expansion method
Creators: name: Concha, Patrick
name: Ipinza, Marcelo
name: Ravera, Lucrezia
name: Rodríguez, Evelyn
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we present an alternative method to construct diverse non-relativistic Chern-Simons supergravity theories in three spacetime dimensions. To this end, we apply the Lie algebra expansion method based on semigroups to a supersymmetric extension of the Nappi-Witten algebra. Two different families of non-relativistic superalgebras are obtained, corresponding to generalizations of the extended Bargmann superalgebra and extended Newton-Hooke superalgebra, respectively. The expansion method considered here allows to obtain known and new non-relativistic supergravity models in a systematic way. In particular, it immediately provides an invariant tensor for the expanded superalgebra, which is essential to construct the corresponding Chern-Simons supergravity action. We show that the extended Bargmann supergravity and its Maxwellian generalization appear as particular subcases of a generalized extended Bargmann supergravity theory. In addition, we demonstrate that the generalized extended Bargmann and generalized extended Newton-Hooke supergravity families are related through a contraction process.
description: v1, 37 pages
Επίδραση τριών ζωικών κόπρων διαφορετικού C/N στα φυσικοχημικά χαρακτηριστικά του εδάφους
Creators: name: Φαλέγκα, Βασιλική Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: κόπρος
ανοργανοποίηση
δυναμική συσσωμάτωσης
manure
mineralization
aggregation dynamics

description: Σε ένα μέσης κοκκομετρικής σύστασης γεωργικό έδαφος ενσωματώθηκε κόπρος πουλερικών (Κ1), αιγοπροβάτων (Κ2) και βοοειδών (Κ3) για να μελετηθεί η συμβολή τους στη μεταβολή ορισμένων φυσικοχημικών ιδιοτήτων κάτω από ελεγχόμενες συνθήκες. Στο τέλος της επώασης υπήρξε ανοργανοποίηση αζώτου Ν και για τις τρεις κόπρους. Το προστιθέμενο Ν στο έδαφος και για τις τρείς κόπρους, προέρχονταν από την αύξηση των ΝΟ3-Ν του εδάφους και μόνο η Κ1 προσέθεσε επιπλέον μικρή ποσότητα Ν από το ΝΗ4-Ν. Ο φώσφορος Ρ, το κάλιο Κ και το νάτριο Na που ελευθερώθηκαν και από τις τρεις κόπρους ακινητοποιήθηκαν στο έδαφος. Στην αρχή της επώασης οι Κ1 και Κ2 συνέβαλλαν στο σχηματισμό 2-1 mm συσσωματωμάτων. Για τις Κ2 και Κ3, βρέθηκε θετική συμμεταβολή μεταξύ της αύξησης του οργανικού C κατά τη διάρκεια της επώασης και α) της σταθερότητας στη διαβροχή ή β) της θρόμβωσης της αργίλου, των 2-1 mm συσσωματωμάτων.
description: Three animal manures (poultry-K1, sheep-K2 and cattle-K3) were incorporated in a loamy agricultural soil in order to study their contribution to the change of some physicochemical soil properties under controlled conditions. In the end of three months of incubation, Nitrogen mineralization was found for all three manures. Soil N increase originated from NO3-N inputs from the three manures and only K1 contributed with a small amount of NH4-N, in addition. The mineralized nutrients of phosphorus P, potassium K and sodium Na were immobilized in the soil for all three manures. In the beginning of the incubation, K1 and K2 contributed to the formation of 2-1 mm aggregates. For K2 and K3, a positive linear correlation was found between organic C increase during the incubation and a) aggregate stability or b) clay flocculation, of the 2-1 mm aggregates.
Low Energy Supersymmetry from the Heterotic Landscape
Creators: name: Lebedev, Oleg
name: Nilles, Hans-Peter
name: Raby, Stuart
name: Ramos-Sanchez, Saul
name: Ratz, Michael
name: Vaudrevange, Patrick K. S.
name: Wingerter, Akin
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study possible correlations between properties of the observable and hidden sectors in heterotic string theory. Specifically, we analyze the case of the Z6-II orbifold compactification which produces a significant number of models with the spectrum of the supersymmetric standard model. We find that requiring realistic features does affect the hidden sector such that hidden sector gauge group factors SU(4) and SO(8) are favoured. In the context of gaugino condensation, this implies low energy supersymmetry breaking.
description: 4 pages, 3 figures; to appear in Phys. Rev. Lett
Measurement of Fluctuation-induced Diamagnetism in BSCCO-2212 single crystals using Magneto-optics
Creators: name: Sozeri, Huseyin
name: Dorosinskii, Lev
name: Topal, Ugur
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Fluctuation induced diamagnetism in BSCCO single crystals with different doping levels (i.e., different oxygen stoichiometry) was measured using magneto-optics (MO) in a wide frequency range up to several MHz. A shift in Tc onset, measured by MO, of up to 6 K towards higher temperatures was observed at high frequencies in those samples which are far from the optimally doped condition. An explanation of the observed effect in terms of the phase fluctuations of the superconducting order parameter is proposed.
description: 13 pages, 3 figures
Absorption of Microwaves by Random-Anisotropy Magnets
Creators: name: Garanin, D. A.
name: Chudnovsky, E. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Microscopic model of the interaction of spins with a microwave field in a random-anisotropy magnet has been developed. Numerical results show that microwave absorption occurs in a broad range of frequencies due to the distribution of Imry-Ma domains on sizes and effective anisotropy. That distribution is also responsible for the weak dependence of the absorption on the damping. At a fixed frequency of the ac-field the spatial pattern of the amplitude of spin oscillations exhibits maxima corresponding to the oscillations of resonant magnetic domains. The dependence of the peak absorption frequency on the ratio of the magnitude of per-spin random anisotropy to the strength of the ferromagnetic exchange agrees with the scaling derived from the Imry-Ma argument. The effect noticeably increases in low-dimensional systems, suggesting that materials comprised of microscopic amorphous leaves and wires can be promising candidates for enhanced microwave absorption.
description: 10 PR pages, 10 figures, 34 references
Simulation studies of a phenomenological model for elongated virus capsid formation
Creators: name: Chen, Ting
name: Glotzer, Sharon C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study a phenomenological model in which the simulated packing of hard, attractive spheres on a prolate spheroid surface with convexity constraints produces structures identical to those of prolate virus capsid structures. Our simulation approach combines the traditional Monte Carlo method with a modified method of random sampling on an ellipsoidal surface and a convex hull searching algorithm. Using this approach we identify the minimum physical requirements for non-icosahedral, elongated virus capsids, such as two aberrant flock house virus (FHV) particles and the prolate prohead of bacteriophage $ϕ_{29}$, and discuss the implication of our simulation results in the context of recent experimental findings. Our predicted structures may also be experimentally realized by evaporation-driven assembly of colloidal spheres.
Quasicrystals: Projections of 5-d Lattice into 2 and 3 Dimensions
Creators: name: Au-Yang, Helen
name: Perk, Jacques H. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that generalized Penrose tilings can be obtained by the projection of a cut plane of a 5-dimensional lattice into two dimensions, while 3-d quasiperiodic lattices with overlapping unit cells are its projections into 3d. The frequencies of all possible vertex types in the generalized Penrose tilings, and the frequencies of all possible types of overlapping 3-d unit cells are also given here. The generalized Penrose tilings are found to be nonconvertable to kite and dart patterns, nor can they be described by the overlapping decagons of Gummelt.
description: LaTeX2e, 11 pages, 6 eps figures, 23rd International Conference of Differential Geometric Methods in Theoretical Physics, Nankai 2005
Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in $^{208}$Pb
Creators: name: Spieker, M.
name: Heusler, A.
name: Brown, B. A.
name: Faestermann, T.
name: Hertenberger, R.
name: Potel, G.
name: Scheck, M.
name: Tsoneva, N.
name: Weinert, M.
name: Wirth, H. -F.
name: Zilges, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in $^{208}$Pb are presented. They were obtained from $(d,p)$ and resonant proton scattering experiments performed at the Q3D spectrograph of the Maier-Leibnitz Laboratory in Garching, Germany. The new data are compared to the large suite of complementary, experimental data available for $^{208}$Pb and establish $(d,p)$ as an additional, valuable, experimental probe to study the PDR and its collectivity. Besides the single-particle character of the states, different features of the strength distributions are discussed and compared to Large-Scale-Shell-Model (LSSM) and energy-density functional (EDF) plus Quasiparticle-Phonon Model (QPM) theoretical approaches to elucidate the microscopic structure of the PDR in $^{208}$Pb.
description: 9 pages, 4 figures
Διπλωματική Εργασία για το Διατμηματικό Πρόγραμμα Σπουδών Διερμηνείας και Μετάφρασης - Ειδίκευση Διερμηνείας
Creators: name: Φινοπούλου, Θεοδώρα Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Διερμηνεία συνεδρίων
Πρακτική άσκηση
Αξιολόγηση
Conference interpreting
Professional apprenticeship
Evaluation

description: Η παρούσα εργασία περιγράφει την υποχρεωτική πρακτική άσκηση που κάναμε στα πλαίσια του μεταπτυχιακού προγράμματος διερμηνείας συνεδρίων. Κατά κάποιον τρόπο συνοψίζει ολόκληρο το μεταπτυχιακό πρόγραμμα σπουδών, αφού η πρακτική άσκηση αποσκοπούσε στην πραγματική εφαρμογή των όσων είχαμε μάθει. Στην εργασία περιγράφονται τα τέσσερα συνέδρια, στα οποία συμμετείχα. Το κάθε κεφάλαιο ξεκινά με μια σύντομη περιγραφή της εκάστοτε εκδήλωσης, των συνθηκών διερμηνείας και γίνεται μια σύντομη αναφορά στους ομιλητές, ενώ στα υπόλοιπα υποκεφάλαια περιγράφεται λεπτομερώς το περιεχόμενο των ομιλιών, η προετοιμασία για το συνέδριο και στο τέλος προβάλλεται ο τρόπος απόδοσης των ομιλιών που συνοδεύεται από μια αξιολόγηση της επίδοσής μου. Πριν την περιγραφή των συνεδρίων θεώρησα σκόπιμο να προβώ σε μια σύντομη εισαγωγή στη θεωρία της συνεδρίας συνεδρίων. Στο τέλος σε μορφή παραρτήματος παρατίθεται το υλικό που χρησιμοποίησα στην προετοιμασία του κάθε συνεδρίου, αλλά και κατά τη διάρκειά του και τα έντυπα αξιολόγησης των διοργανωτών των συνεδρίων, στις δύο περιπτώσεις που συμπληρώθηκαν
description: The present thesis describes the obligatory professional apprenticeship we completed in the context of the master’s degree in conference interpreting. In a way it summarizes the entire master’s program, because the aim of the apprenticeship was to practically apply what we had learned during the course. In this thesis I describe the four conferences, in which I participated during the apprenticeship. Each chapter starts with a short description of the conference in question, of the interpreting conditions and the speakers. This is followed by a detailed description of the content of the speeches, of the preparation for the conferences and of the way the speeches were rendered accompanied by an evaluation of my performance. Before the description of the conferences there is a short reference to the theory of conference interpreting. At the end of the thesis I attached as an annex the material I used before and during each conference and the two evaluation forms I had in my disposal filled out by the organizers of the conferences.
Spatiotemporal complexity of a ratio-dependent predator-prey system
Creators: name: Wang, Weiming
name: Liu, Quan-Xing
name: Jin, Zhen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: In this paper, we investigate the emergence of a ratio-dependent predator-prey system with Michaelis-Menten-type functional response and reaction-diffusion. We derive the conditions for Hopf, Turing and Wave bifurcation on a spatial domain. Furthermore, we present a theoretical analysis of evolutionary processes that involves organisms distribution and their interaction of spatially distributed population with local diffusion. The results of numerical simulations reveal that the typical dynamics of population density variation is the formation of isolated groups, i.e., stripelike or spotted or coexistence of both. Our study shows that the spatially extended model has not only more complex dynamic patterns in the space, but also chaos and spiral waves. It may help us better understand the dynamics of an aquatic community in a real marine environment.
description: 6pages, revtex4
Polyakov loop, diquarks and the two-flavour phase diagram
Creators: name: Roessner, Simon
name: Ratti, Claudia
name: Weise, Wolfram
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An updated version of the PNJL model is used to study the thermodynamics of N_f = 2 quark flavors interacting through chiral four-point couplings and propagating in a homogeneous Polyakov loop background. Previous PNJL calculations are extended by introducing explicit diquark degrees of freedom and an improved effective potential for the Polyakov loop field. The input is fixed exclusively by selected pure-gauge lattice QCD results and by pion properties in vacuum. The resulting (T, μ) phase diagram is studied with special emphasis on the critical point, its dependence on the quark mass and on Polyakov loop dynamics. We present successful comparisons with lattice QCD thermodynamics expanded to finite chemical potential μ.
description: 15 pages, 7 figures Discussion in section 2 has been extended. Legend of Fig. 7 has been corrected. Typographic errors have been removed. References have been supplemented
BO'LAJAK ARAB TILI O'QITUVCHISINING PEDAGOGIK KOMPETENSIYASINI RIVOJLANTIRISHDAGI YONDASHUVLAR
Creators: name: Kadirova Madinabonu Turgunovna, O'zbekiston xalqaro islom akademiyasi "Arab tili va adabiyoti al-Azhar" kafedrasi katta o'qituvchisi
Publisher: name: Zenodo
Year: 2024

description: Ma’lumki, bo‘lajak arab tili o‘qituvchisining pedagogik kompetensiyasini rivojlantirishda turli yondashuvlar mavjud bo‘lib, ulardan asosiysi tizimli, shaxs faoliyatiga yo‘naltirilgan, kompetensiyaviy, faoliyat yondashuvlaridir.
Linear scaling calculation of band edge states and doped semiconductors
Creators: name: Xiang, H. J.
name: Yang, Jinlong
name: Hou, J. G.
name: Zhu, Qingshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Linear scaling methods provide total energy, but no energy levels and canonical wavefuctions. From the density matrix computed through the density matrix purification methods, we propose an order-N (O(N)) method for calculating both the energies and wavefuctions of band edge states, which are important for optical properties and chemical reactions. In addition, we also develop an O(N) algorithm to deal with doped semiconductors based on the O(N) method for band edge states calculation. We illustrate the O(N) behavior of the new method by applying it to boron nitride (BN) nanotubes and BN nanotubes with an adsorbed hydrogen atom. The band gap of various BN nanotubes are investigated systematicly and the acceptor levels of BN nanotubes with an isolated adsorbed H atom are computed. Our methods are simple, robust, and especially suited for the application in self-consistent field electronic structure theory.
Surface Plasmon Resonance Immunosensor for the Detection of Campylobacter jejuni
Creators: name: Masdor, Noor Azlina
name: Altintas, Zeynep
name: Tothill, Ibtisam E.
Publisher: name: Technische Universität Berlin
Year: 2017
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: Campylobacter jejuni
subject: campylobacteriosis
subject: Surface Plasmon Resonance
subject: immunosensor
subject: sandwich assay
subject: SPR

description: Campylobacteriosis is an internationally important foodborne disease caused by Campylobacter jejuni. The bacterium is prevalent in chicken meat and it is estimated that as much as 90% of chicken meat on the market may be contaminated with the bacterium. The current gold standard for the detection of C. jejuni is the culturing method, which takes at least 48 h to confirm the presence of the bacterium. Hence, the aim of this work was to investigate the development of a Surface Plasmon Resonance (SPR) sensor platform for C. jejuni detection. Bacterial strains were cultivated in-house and used in the development of the sensor. SPR sensor chips were first functionalized with polyclonal antibodies raised against C. jejuni using covalent attachment. The gold chips were then applied for the direct detection of C. jejuni. The assay conditions were then optimized and the sensor used for C. jejuni detection, achieving a detection limit of 8 × 106 CFU·mL−1. The sensitivity of the assay was further enhanced to 4 × 104 CFU·mL−1 through the deployment of a sandwich assay format using the same polyclonal antibody. The LOD obtained in the sandwich assay was higher than that achieved using commercial enzyme-linked immunosorbent assay (ELISA) (106–107 CFU·mL−1). This indicate that the SPR-based sandwich sensor method has an excellent potential to replace ELISA tests for C. jejuni detection. Specificity studies performed with Gram-positive and Gram-negative bacteria, demonstrated the high specific of the sensor for C. jejuni.
The influence of photon angular momentum on ultrafast spin dynamics in Nickel
Creators: name: Longa, F. Dalla
name: Kohlhepp, J. T.
name: de Jonge, W. J. M.
name: Koopmans, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The role of photon angular momentum in laser-induced demagnetization of Nickel thin films is investigated by means of pump-probe time-resolved magneto-optical Kerr effect in the polar geometry. The recorded data display a strong dependency on pump helicity during pump-probe temporal overlap, which is shown to be of non-magnetic origin. By accurately fitting the demagnetization curves we also show that demagnetization time and electron-phonon equilibration time are not affected by pump-helicity. Thereby our results do not support direct transfer of angular momentum between photons and spins to be relevant for the demagnetization process. This suggests, in agreement with the microscopic model that we recently presented, that the source of angular momentum could be phonons or impurities rather than laser photons as required in the microscopic model proposed by Zhang and Huebner.
description: 5 pages, 3 figures, submitted to Phys. Rev. B
Zinc Sulphide Overlayer Two-Dimensional Photonic Crystal for Enhanced Extraction of Light from a Micro Cavity Light-Emitting Diode
Creators: name: Mastro, Michael A.
name: Kim, Chul Soo
name: Kim, Mijin
name: Caldwell, Josh
name: Holm, Ron T.
name: Vurgaftman, Igor
name: Kim, Jihyun
name: Eddy, Charles R.
name: Meyer, Jerry R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of lambda/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.
Jacobi stability of the vacuum in the static spherically symmetric brane world models
Creators: name: Harko, T.
name: Sabau, V. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze the stability of the structure equations of the vacuum in the brane world models, by using both the linear (Lyapunov) stability analysis, and the Jacobi stability analysis, the Kosambi-Cartan-Chern (KCC) theory. In the brane world models the four dimensional effective Einstein equations acquire extra terms, called dark radiation and dark pressure, respectively, which arise from the embedding of the 3-brane in the bulk. Generally, the spherically symmetric vacuum solutions of the brane gravitational field equations, have properties quite distinct as compared to the standard black hole solutions of general relativity. We close the structure equations by assuming a simple linear equation of state for the dark pressure. In this case the vacuum is Jacobi stable only for a small range of values of the proportionality constant relating the dark pressure and the dark radiation. The unstable trajectories on the brane behave chaotically, in the sense that after a finite radial distance it would be impossible to distinguish the trajectories that were very near each other at an initial point. Hence the Jacobi stability analysis offers a powerful method for constraining the physical properties of the vacuum on the brane.
description: 21 pages, 3 figures, accepted for publication in PRD
Success and breakdown of the T-matrix approximation for phonon-disorder scattering
Creators: name: Thébaud, S.
name: Polanco, C. A.
name: Lindsay, L.
name: Berlijn, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We examine the validity of the widely used T-matrix approximation for treating phonon-disorder scattering by implementing an unfolding algorithm that allows simulation of disorder up to tens of millions of atoms. The T-matrix approximation breaks down for low-energy flexure phonons that play an important role in thermal transport in two-dimensional materials. Furthermore, insights are developed into the success of the T-matrix approximation in describing maximally mass disordered systems. To achieve this, the phonon unfolding formalism is generalized to describe mass disorder and strongly nonperturbative features of the spectrum are connected to the Boltzmann quasiparticle picture.
Structural Kinetic Modeling of Metabolic Networks
Creators: name: Steuer, Ralf
name: Gross, Thilo
name: Selbig, Joachim
name: Blasius, Bernd
Publisher: name: arXiv
Year: 2006
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: To develop and investigate detailed mathematical models of cellular metabolic processes is one of the primary challenges in systems biology. However, despite considerable advance in the topological analysis of metabolic networks, explicit kinetic modeling based on differential equations is still often severely hampered by inadequate knowledge of the enzyme-kinetic rate laws and their associated parameter values. Here we propose a method that aims to give a detailed and quantitative account of the dynamical capabilities of metabolic systems, without requiring any explicit information about the particular functional form of the rate equations. Our approach is based on constructing a local linear model at each point in parameter space, such that each element of the model is either directly experimentally accessible, or amenable to a straightforward biochemical interpretation. This ensemble of local linear models, encompassing all possible explicit kinetic models, then allows for a systematic statistical exploration of the comprehensive parameter space. The method is applied to two paradigmatic examples: The glycolytic pathway of yeast and a realistic-scale representation of the photosynthetic Calvin cycle.
description: 14 pages, 8 figures (color)
Truncated states obtained by iteration
Creators: name: Cardoso, W. B.
name: de Almeida, N. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum states of the electromagnetic field are of considerable importance, finding potential application in various areas of physics, as diverse as solid state physics, quantum communication and cosmology. In this paper we introduce the concept of truncated states obtained via iterative processes (TSI) and study its statistical features, making an analogy with dynamical systems theory (DST). As a specific example, we have studied TSI for the doubling and the logistic functions, which are standard functions in studying chaos. TSI for both the doubling and logistic functions exhibit certain similar patterns when their statistical features are compared from the point of view of DST. A general method to engineer TSI in the running-wave domain is employed, which includes the errors due to the nonidealities of detectors and photocounts.
description: 10 pages, 22 figures
Deep subwavelength thermal switch via resonant coupling in monolayer hexagonal boron nitride
Creators: name: Papadakis, Georgia T.
name: Ciccarino, Christopher J.
name: Fan, Lingling
name: Orenstein, Meir
name: Narang, Prineha
name: Fan, Shanhui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Unlike the electrical conductance that can be widely modulated within the same material even in deep nanoscale devices, tuning the thermal conductance within a single material system or nanostructure is extremely challenging and requires a large-scale device. This prohibits the realization of robust ON/OFF states in switching the flow of thermal currents. Here, we present the theory of a thermal switch based on resonant coupling of three photonic resonators, in analogy to the field-effect electronic transistor composed of a source, gate, and drain. As a material platform, we capitalize on the extreme tunability and low-loss resonances observed in the dielectric function of monolayer hexagonal boron nitride (hBN) under controlled strain. We derive the dielectric function of hBN from first principles, including the phonon-polariton linewidths computed by considering phonon isotope and anharmonic phonon-phonon scattering. Subsequently, we propose a strain-controlled hBN-based thermal switch that modulates thermal conductance by more than an order of magnitude, corresponding to an ON/OFF contrast ratio of 98%, in a deep subwavelength nanostructure.
Towards Intelligent Reconfigurable Wireless Physical Layer (PHY)
Creators: name: Singh, Neelam
name: Santosh, S. V. Sai
name: Darak, Sumit J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Hardware Architecture (cs.AR)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Next-generation wireless networks are getting significant attention because they promise 10-factor enhancement in mobile broadband along with the potential to enable new heterogeneous services. Services include massive machine type communications desired for Industrial 4.0 along with ultra-reliable low latency services for remote healthcare and vehicular communications. In this paper, we present the design of an intelligent and reconfigurable physical layer (PHY) to bring these services to reality. First, we design and implement the reconfigurable PHY via a hardware-software co-design approach on system-on-chip consisting of the ARM processor and field-programmable gate array (FPGA). The reconfigurable PHY is then made intelligent by augmenting it with online machine learning (OML) based decision-making algorithm. Such PHY can learn the environment (for example, wireless channel) and dynamically adapt the transceivers' configuration (i.e., modulation scheme, word-length) and select the wireless channel on-the-fly. Since the environment is unknown and changes with time, we make the OML architecture reconfigurable to enable dynamic switch between various OML algorithms on-the-fly. We have demonstrated the functional correctness of the proposed architecture for different environments and word-lengths. The detailed throughput, latency, and complexity analysis validate the feasibility and importance of the proposed intelligent and reconfigurable PHY in next-generation networks.
A lift of the Chern-Simons functional and its application to equivariant Floer homology
Creators: name: Anderson, Vaughn
Publisher: name: University of British Columbia
Year: 2009

description: We investigate the gauge theory of 3- and 4- manifolds. A lift of the Chern-Simons functional for flat connections on a principal SU(2)-bundle over a homology 3-sphere Y is constructed, putting strong restrictions on the existence of low-dimensional instanton moduli spaces over the cylinder R x Y. The value of this lift is computed for the Brieskorn spheres Σ(p, q, pqk — 1), and there is found to be one and only one fiat con nection of Floer index 1 with positive Chern-Simons functional. This fact is applied to the computation of the equivariant Floer homology HFq,∗(Σ(2, 3, 6k — 1)) showing that there are connections of index 1 and 5 with non-trivial boundary in the equivariant Floer homology. Specializing to the case k = 2, we obtain vanishing ofHFg,₄∗₊₁(Σ(2,3, 11)).
Decentralized adaptation in interconnected uncertain systems with nonlinear parametrization
Creators: name: Tyukin, Ivan
name: van Leeuwen, Cees
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 93C40; 93C41; 93C10

description: We propose a technique for the design and analysis of decentralized adaptation algorithms in interconnected dynamical systems. Our technique does not require Lyapunov stability of the target dynamics and allows nonlinearly parameterized uncertainties. We show that for the considered class of systems, conditions for reaching the control goals can be formulated in terms of the nonlinear L_2-gains of target dynamics of each interconnected subsystem. Equations for decentralized controllers and corresponding adaptation algorithms are also explicitly provided.
description: 20 pages, 2 figures
Searching for evidence of algorithmic randomness and incomputability in the output of quantum random number generators
Creators: name: Kavulich, John T.
name: Van Deren, Brennan P.
name: Schlosshauer, Maximilian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ideal quantum random number generators (QRNGs) can produce algorithmically random and thus incomputable sequences, in contrast to pseudo-random number generators. However, the verification of the presence of algorithmic randomness and incomputability is a nontrivial task. We present the results of a search for algorithmic randomness and incomputability in the output from two different QRNGs, performed by applying tests based on the Solovay-Strassen test of primality and the Chaitin-Schwartz theorem. The first QRNG uses measurements of quantum vacuum fluctuations. The second QRNG is based on polarization measurements on entangled single photons; for this generator, we use looped (and thus highly compressible) strings that also allow us to assess the ability of the tests to detect repeated bit patterns. Compared to a previous search for algorithmic randomness, our study increases statistical power by almost 3 orders of magnitude.
description: 9 pages, 5 figures, matches published version
ИСКУССТВО КУЛЬТУРНОГО ПЕРЕВОДА: СОХРАНЕНИЕ ПОДТЕКСТА И ОСОБЕННОСТЕЙ РОДНОГО ЯЗЫКА.
Creators: name: Махмудова Н.М., Старший преподаватель кафедры Испанской практики
Publisher: name: Zenodo
Year: 2024

description: В данной статье рассматривается важное искусство культурного перевода, которое помогает сохранить подтекст и особенности родного языка в процессе перевода, а также проблемы, с которыми сталкиваются переводчики: как передать культурные нюансы, идиомы и образы из одного языка в другой с учетом контекста. В статье будут представлены методы, подходы и инструменты, которые помогают переводчикам достичь максимальной точности в передаче смысла оригинального текста без потери его культурной ценности.

Ключевые слова: культурный перевод, подтекст, родной язык, идиомы, культурные нюансы, контекст, точность, культурная ценность.
3D modeling from the onset of the SN to the full-fledged SNR: Role of an initial ejecta anisotropy on matter mixing
Creators: name: Tutone, Antonio
name: Orlando, Salvatore
name: Miceli, Marco
name: Ustamujic, Sabina
name: Ono, Masaomi
name: Nagataki, Shigehiro
name: Ferrand, Gilles
name: Greco, Emanuele
name: Peres, Giovanni
name: Warren, Donald C.
name: Bocchino, Fabrizio
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The aim of this work is to bridge the gap between CC SNe and their remnants by investigating how post-explosion anisotropies in the ejecta influence the structure and chemical properties of the remnant at later times. We performed three-dimensional magneto-hydrodynamical simulations starting soon after the SN event and following the evolution of the system in the circumstellar medium (consisting of the wind of the stellar progenitor), for 5000 years, obtaining the physical scenario of a SNR. Here we focused the analysis on the case of a progenitor red supergiant of 19.8 M_sun. We also investigated how a post-explosion large-scale anisotropy in the SN affects the ejecta distribution and the matter mixing of heavy elements in the remnant, during the first 5000 years of evolution. In the case of a spherically symmetric SN explosion without large-scale anisotropies, the remnant roughly keeps memory of the original onion-like layering of ejecta soon after the SN event. Nevertheless, as the reverse shock hits the ejecta, the element distribution departs from a homologous expansion, because of the slowing down of the outermost ejecta layers due to interaction with the reverse shock. In the case of a large-scale anisotropy developed after the SN, we found that the chemical stratification in the ejecta can be strongly modified and the original onion-like layering is not preserved. The anisotropy may cause spatial inversion of ejecta layers, for instance leading to Fe/Si-rich ejecta outside the O shell, and may determine the formation of Fe/Si-rich jet-like features that may protrude the remnant outline. The level of matter mixing and the properties of the jet-like feature are sensitive to the initial physical (density and velocity) and geometrical (size and position) initial characteristics of the anisotropy.
description: 16 pages, 14 figures, accepted to A&A
MPEC 2024-C102 : 2024 CT1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CT1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.