cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ultracold Bose Mixtures with Spin-Dependent Fermion-Mediated Interactions
Creators: name: Liao, Renyuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a functional integral formulation for binary Bose-Einstein condensates coupled to polarized fermions. We find that spin-dependent fermion-mediated interactions have dramatic effects on the properties of the binary condensates. The quasiparticle spectrum features two branches. The upper branch, which is of density nature, gets modified by the induced interactions, while the lower branch, which is of spin nature, is left intact. The ground-state phase diagram consists of stable region of miscible phases and unstable region toward phase separation. In the stable region, it is further classified by the damping of excitations of the upper branch. We show that it is possible to find region of well-defined, long-lived quasiparticle excitations by tuning relevant parameters, such as boson-fermion mass ratio, boson-fermion number density ratio, and interspecies interactions between bosons as well. We explore the effects of quantum fluctuation due to the effective potential on the binary condensates. It turns out that both the density structure factor and spin density structure factor fulfill the Feynman relation, except that the latter is immune to the fermion-mediated interactions.
description: 6 pages, 3 figures. arXiv admin note: text overlap with arXiv:2007.00409
Field theoretic study of a cold Fermi gas in the unitary limit
Creators: name: Wingate, Matthew
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Trapped and cooled gases of alkali atoms can be manipulated to exhibit a variety of interesting phenomena. For example, dilute gases of fermionic atoms, in 2 hyperfine states, can be cooled to temperatures where they become superfluid. An external field can be applied to tune the scattering length a. When |a| exceeds the interparticle spacing, nonperturbative tools are needed to study the system theoretically. The unitary limit, |a|\to\infty, is particularly interesting due to its universality and symmetry. Lattice field theory and effective field theory can be used to systematically calculate properties of this system. Results are presented for the finite temperature phase transition and for behavior near zero temperature.
description: 7 pages. Talk delivered at The XXIV International Symposium on Lattice Field Theory, Tucson, Arizona, July 2006. To appear in Proceedings of Science
Problems of legitimacy regarding the European convention on human rights : formalism, fuzziness, or lack of theory?
Creators: name: Gudmundsdóttir, Dóra
Publisher: name: University of British Columbia
Year: 2009

description: This paper inquires into legitimacy problems regarding the European Convention on Human Rights, in particular the European Court's own idea or theory of its legitimate practice. I argue that even if the Court's jurisprudence shows some flexibility - and the interpretive work integrates to some extent three dimensions of legitimacy and law, normativity, formality and efficacy - the prevailing method of the Court is marked by a positivistic formalist legal tradition, seeing law predominantly as a formal and self-legitimating system of norms. The positivistic claim of the subjectivity of meaning becomes problematic however in the application of an international human rights' document. The Court's reliance on normative elements turns out to be in constant tension with the positivistic conception of consent as a basis for obligation. This tension is, I argue, manifested in the Court's confusing consensus methodology, as well as in its dichotomy methodology of "autonomous interpretation" and "margin of appreciation". I criticize the Court's consensus methodology, whether in the form of drawing consensus from the international community, or from the domestic legislation of member states of the Council of Europe. I argue that the prevailing positivistic formalist approach to the European Convention is based upon assumptions found in general legal theory and international law theory. To underpin my analysis of the Court's case law, I draw on critical approaches to both legal theory and international legal discourse that attempt to be external to the assumptions of theory, scholarship and practice. A theme pursued throughout the paper is the importance of an external perspective to legal theory and practice. As a part of my analysis, I look at new approaches to law and legal reasoning as "fuzzy", and conclude that, as applied to the European Convention, these approaches tend to draw upon a formalist conception of law.
The multi-angle instability in dense neutrino systems
Creators: name: Sawyer, R. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate rates of flavor exchange within clouds of neutrinos interacting with each other through the standard model coupling, assuming a conventional mass matrix. For cases in which there is an angular dependence in the relation among intensity, flavor and spectrum, we find instabilities in the evolution equations and greatly speeded-up flavor exchange. The instabilities are categorized by examining linear perturbations to simple solutions, and their effects are exhibited in complete numerical solutions to the system. The application is to the region just under the neutrino surfaces in the supernova core.
description: 9 pages, 3 figures
The Properties and Redshift Evolution of Intermediate-Luminosity Off-Nuclear X-ray Sources in the Chandra Deep Fields
Creators: name: Lehmer, B. D.
name: Brandt, W. N.
name: Hornschemeier, A. E.
name: Alexander, D. M.
name: Bauer, F. E.
name: Koekemoer, A. M.
name: Schneider, D. P.
name: Steffen, A. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze a population of intermediate-redshift (z ~ 0.05-0.3), off-nuclear X-ray sources located within optically-bright galaxies in the Great Observatories Origins Deep Survey (GOODS) and Galaxy Evolution from Morphology and SEDs (GEMS) fields. A total of 24 off-nuclear source candidates are classified using deep Chandra exposures from the Chandra Deep Field-North, Chandra Deep Field-South, and Extended Chandra Deep Field-South; 15 of these are newly identified. These sources have average X-ray spectral shapes and optical environments similar to those observed for off-nuclear intermediate-luminosity (L_X >~ 10^{39} erg/s in the 0.5-2.0 keV band) X-ray objects (IXOs; sometimes referred to as ultraluminous X-ray sources [ULXs]) in the local universe. This sample improves the available source statistics for intermediate-redshift, off-nuclear sources with L_X >~ 10^{39.5} erg/s, and it places significant new constraints on the redshift evolution of the off-nuclear source frequency in field galaxies. The fraction of intermediate-redshift field galaxies containing an off-nuclear source with L_X >~ 10^{39} erg/s is suggestively elevated (~80% confidence level) with respect to that observed for IXOs in the local universe; we calculate this elevation to be a factor of 1.9^{+1.4}_{-1.3}. A rise in this fraction is plausibly expected as a consequence of the observed increase in global star-formation density with redshift, and our results are consistent with the expected magnitude of the rise in this fraction.
description: Accepted for publication in AJ. 37 pages, 12 figures
The reasonable person in substantive Canadian Criminal Law
Creators: name: Mikus, Rudolf Alexander,
Publisher: name: University of British Columbia
Year: 2009

description: Canadian Criminal Law uses the standard of the reasonable person as an open textured definition for the threshold of criminality if conduct is, per se, useful for society but becomes undesirable when done in certain circumstances, without proper precautions. Indicating that the agent did not intentionally cause harm, 'unreasonableness' tends to be found in the situative patterns of accidents and mistakes, which are represented in my research paradigmatically by the offence of manslaughter (ss.220,222 of the Canadian Criminal Code) and the defence of self-defence (s.34). My thesis inquires into the concept of reasonableness, approaching the topic in four different ways. First, in a case study of current Canadian law the focus is on the leading cases of R.v.Creighton and R.v.Lavallee. The effects of s.7 of the Canadian Charter of Rights and Freedoms are considered. It is submitted that there are different tests to determine reasonableness in either case, and a new theoretical foundation is offered which justifies the difference. Second, doctrinal analysis explores whether the common law principle of 'mens red requires reasonableness to be assessed on the basis of certain criteria. The dispute between objectivist and subjectivist views whether the notion of fault requires 'awareness of risk' on part of the accused leads to an inquiry into moral theory. Pursuing the search for criteria this philosophical aspect is examined as well as its utilitarian counterpart, economic analysis. The third approach critically assesses critically the cultural norms which fill out the reasonable person's appearance. Referring to critical race- and feminist legal theory, the focus is on a multicultural society's postulations regarding the standard. An analysis of how the concept of reasonableness can acknowledge cultural norms which are different from the decisionmaker's is undertaken. Fourth, in a comparative effort the patterns of unreasonably caused accidents and mistakes are presented in the context of both the German legal system and George Fletcher's writing 'Rethinking Criminal Law'. Taking advantage of system theory, especially the concept of 'wrongdoing' as opposed to 'attribution', it is argued that a different assessment of the consequences of unreasonable behavior is not justified, i.e. honest but unreasonable self-defence leading to homicide should be punished as negligence but not as murder.
Using Spectral Method as an Approximation for Solving Hyperbolic PDEs
Creators: name: Pedram, P.
name: Mirzaei, M.
name: Gousheh, S. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We demonstrate an application of the spectral method as a numerical approximation for solving Hyperbolic PDEs. In this method a finite basis is used for approximating the solutions. In particular, we demonstrate a set of such solutions for cases which would be otherwise almost impossible to solve by the more routine methods such as the Finite Difference Method. Eigenvalue problems are included in the class of PDEs that are solvable by this method. Although any complete orthonormal basis can be used, we discuss two particularly interesting bases: the Fourier basis and the quantum oscillator eigenfunction basis. We compare and discuss the relative advantages of each of these two bases.
description: 19 pages, 14 figures. to appear in Computer Physics Communication
Many-body effects in transport through open systems: pinning of resonant levels
Creators: name: Ihnatsenka, S.
name: Zozoulenko, I. V.
name: Willander, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The role of electron-electron interaction in transport properties of open quantum dots is studied. The self-consistent full quantum mechanical magnetotransport calculations within the Hartree, Density Functional Theory and Thomas-Fermi approximations were performed where a whole device, including the semi-infinitive leads, is treated on the same footing (i.e. the electron-electron interaction is accounted for both in the leads as well as in the dot region). The main finding of the present paper is the effect of pinning of the resonant levels to the Fermi energy due to the enhanced screening. Our results represent a significant departure from a conventional picture where a variation of external parameters (such as a gate voltage, magnetic field, etc.) causes the successive dot states to sweep past the Fermi level in a linear fashion. We instead demonstrate highly nonlinear behavior of the resonant levels in the vicinity of the Fermi energy. The pinning of the resonant levels in open quantum dots leads to the broadening of the conduction oscillations in comparison to the one electron picture. The effect of pinning becomes much more pronounced in the presence of the perpendicular magnetic field. This can be attributed to the enhanced screening efficiency because of the increased localization of the wave function. The strong pinning of the resonant energy levels in the presence of magnetic field can have a profound effect on transport properties of various devices operating in the edge state transport regime. We also critically examine an approximation often used in transport calculations where an inherently open system is replaced by a corresponding closed one.
description: 10 pages, 7 figures, submitted to Phys. Rev. B
On the Differentials of the Spectral Sequence of a Fibre Bundle
Creators: name: Kadeishvili, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55S30, 55R20, 55U15

description: Let $ξ=(X,p,B,G)$ be a principal $G$-bundle, $F$ be a $G$ space and $η=(E,p,B,F)$ be the associated bundle with the fiber $F$. Generally $ξ$ and the action $H_*(G)\otimes H_*(F)\to H_*(F)$ of the Pontriagin ring $H_*(G)$ on $H_*(F)$ do not define homologies of $E$. In this paper we define a two sequences of operations $\{f^i:H_*(G)^{\otimes i}\to H_*(G), i=3,4,...\}$, which we call Hochschild twisting cochain (with respect to Gerstenhaber product), and which in fact form on $H_*(G)$ an $A(\infty$-algebra structure), and $\{\bar{f}^i:H_*(G)^{\otimes (i-1)}\otimes H*(F)\to H_*(F), i=3,4,...\}$ (which in fact form on $H_*(F)$ an $A(\infty)$-module structure over the $A(\infty)$-algebra $(H_*(G),\{f^i\})$) and show that $ξ$ and these higher structures define $H_*(E)$.
description: This is the English version of the paper published originally in Russian where an A(infty) algebra structure in homology first show up in terms of Hochshild twisting cochains with respect to Gerstenhaber product
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the Wrecking of: Pyrenee (Schooner)
Creators: name: Davies, Gareth J.S.
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: The Pyrenee was a coastal cargo schooner which in her early life sailed between NW England and Wales to France and The Netherlands. From around 1863, the Pyrenee sailed predominately between Wales, Ireland, NW England and Western Scotland carrying various cargoes. On Nov 11 1872, the Pyrenee was blown ashore near Cardigan Island during a severe storm and wrecked with the loss of 3 lives.
Molecular Beam Study of the CO Adsorption on a Regular Array of PdAu Clusters on Alumina
Creators: name: Sitja, Georges
name: Henry, Claude R
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The adsorption kinetics of CO on PdAu bimetallic clusters, containing 140 $\pm$ 12 atoms and a composition varying between 0% and 55% of Pd atoms, is investigated by a pulsed molecular beam method (MBRS). The clusters are grown on a nanostructured ultrathin film of alumina on Ni3Al (111) playing the role of a template which gives a hexagonal array of bimetallic clusters having a sharp size distribution and a uniform composition. The surface concentration calculated, assuming segregation of gold to the surface, varies between 0 and 90% of Au atoms on the surface. From the adsorption-desorption kinetics of CO, the lifetime of CO is measured at various temperatures. At low coverage, plotting the CO lifetime in an Arrhenius diagram one obtains the adsorption energy of CO. When the surface concentration of Au increases, the adsorption energy of CO on the PdAu clusters decreases. This evolution of the adsorption energy is discussed, from previous studies, in term of ligand and ensemble effects. We find that the ensemble effect plays a dominant role in the observed decrease of the adsorption energy of CO.
Το δέντρο στη διήγηση του Παραδείσου και στο πολιτιστικό περιβάλλον του Ισραήλ
Creators: name: Τσιρέλη, Ευλαμπία Αριστοτέλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Δέντρο
Παράδεισος
Εγγύς Ανατολή
Tree
Paradise
Near East

description: Στην παρούσα εργασία ασχοληθήκαμε με το δέντρο στη διήγηση του Παραδείσου της Γένεσης και στο πολιτιστικό περιβάλλον του Ισραήλ. Πώς δηλαδή οι μυθολογικοί συμβολισμοί του δέντρου στους λαούς της Εγγύς Ανατολής επέδρασαν στο βιβλικό κείμενο και συγκεκριμένα στη διήγηση του Παραδείσου του βιβλίου της Γένεσης. Μελετήσαμε την πορεία του συμβόλου του δέντρου στις διάφορες μορφές του ξεκινώντας από τον πολιτισμό των Σουμερίων, συνεχίζοντας στους Ασσυρίους και Βαβυλωνίους, έπειτα στους Αιγυπτίους, στους Χαναναίους και καταλήγοντας στον πολιτισμό των Εβραίων. Φτάνοντας στο κείμενο της Γένεσης έγινε μια προσπάθεια ερμηνείας των χωρίων που αναφέρονται στο δέντρο της γνώσης και στο δέντρο της ζωής. Συγκεκριμένα, αναζητήσαμε αρχικά τις θρησκειολογικές καταβολές του κείμενου, κατόπιν διερευνήσαμε τις πηγές του κειμένου, έπειτα την μορφή του κειμένου και τέλος τις συντακτικές παρεμβάσεις του συγγραφέα ή των συγγραφέων σε αυτό.
description: In this paper, we studied the symbol of the tree in the paradise story of the book of Genesis and in the cultural environment of Israel. We investigated the role the various mythological symbolisms of the tree, met in the cultures of Mesopotamia and Egypt, played in the biblical text and particularly in the paradise story. We also studied the long course of that symbol in its various forms, starting from the Sumerian civilization and then continuing with the Assyrians, Babylonians, Egyptians, Canaanites and finally ending up with the Hebrews. We tried to interpret the verses referred to the tree of knowledge of good and evil and the tree of life. More specifically, at first we traced the religious origins of the text and studied the sources of it. Then we studied its form and we noted the syntactical interferences of the biblical author or authors.
How Far Are We From an Optimal, Adaptive DE?
Creators: name: Tanabe, Ryoji
name: Fukunaga, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We consider how an (almost) optimal parameter adaptation process for an adaptive DE might behave, and compare the behavior and performance of this approximately optimal process to that of existing, adaptive mechanisms for DE. An optimal parameter adaptation process is an useful notion for analyzing the parameter adaptation methods in adaptive DE as well as other adaptive evolutionary algorithms, but it cannot be known generally. Thus, we propose a Greedy Approximate Oracle method (GAO) which approximates an optimal parameter adaptation process. We compare the behavior of GAODE, a DE algorithm with GAO, to typical adaptive DEs on six benchmark functions and the BBOB benchmarks, and show that GAO can be used to (1) explore how much room for improvement there is in the performance of the adaptive DEs, and (2) obtain hints for developing future, effective parameter adaptation methods for adaptive DEs.
description: This is an accepted version of a paper published in the proceedings of PPSN 2016
Το καθεστώς χορήγησης αδειών στην ελληνική σωφρονιστική νομοθεσία
Creators: name: Σεχίδου, Αικατερίνη Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Άδειες
Κρατούμενοι
Σωφρονιστική
Furloughs
Prisoners
Penitentiary

description: Η διατριβή πραγματεύεται το σωφρονιστικό θεσμό των αδειών εξόδου των κρατουμένων από τα καταστήματα κράτησης, όπως αυτός είναι αποτυπωμένος στην ελληνική σωφρονιστική νομοθεσία. Σκοπός αυτής της μελέτης ήταν η ανάδειξη των προβληματικών που ανακύπτουν τόσο σε επίπεδο θεσμικού πλαισίου όσο και στην εφαρμογή του θεσμού στη σωφρονιστική πρακτική. Εξετάστηκε η ιστορική εξέλιξη των αδειών και η διάκρισή τους από εγγενείς θεσμούς. Στη συνέχεια παρουσιάστηκαν αναλυτικά οι γενικές αρχές που διέπουν τις άδειες, τα είδη αυτών και τα χαρακτηρολογικά τους γνωρίσματα. Επιπλέον, έγινε διεξοδική αναφορά στις προϋποθέσεις, στη διαδικασία και στα όργανα χορήγησης των αδειών. Ένα άλλο ζήτημα που εξετάστηκε ήταν οι δικαιολογητικοί λόγοι και η αναγκαιότητα θέσπισης των αδειών. Στα πλαίσια αυτής της ανάπτυξης, παρουσιάστηκε η σημασία χορήγησης αδειών για τους κρατούμενους, την εύρυθμη λειτουργία των καταστημάτων κράτησης και το κοινωνικό σύνολο. Παράλληλα, αναζητήθηκε η νομική φύση του εν λόγω σωφρονιστικού θεσμού και προτάθηκε η αντιμετώπισή του ως δικαίωμα όλων των κρατουμένων. Τέλος, έγινε μια συνοπτική συγκριτική επισκόπηση των αδειών σε Ευρωπαϊκό επίπεδο. Όλα τα παραπάνω ζητήματα προσεγγίστηκαν με βάση το ισχύον νομικό πλαίσιο μέχρι και την ψήφιση του ν. 4274/2014 και τα ερευνητικά δεδομένα που συγκεντρώθηκαν από τη διεξαγωγή ποιοτικής έρευνας στο ΑΣΚΑ Κασσαβέτειας.
description: The thesis reports on the correctional institution of prisoners’ furloughs, as this is indicated in the Greek correctional legislation. The aim of the present study was the highlighting of the emerging problems that arise both in the level of legal framework and the implementation of the institution in correctional practice. The historical development of furloughs and their distinction from other related institutions were examined. Then the general principles governing the furloughs, the type of them and their characterological attributes were analytically presented. Moreover, there was a thorough reference to the prerequisites, the procedure and the bodies issuing the furloughs. Another examined issue was the justifications and the need to establish the furloughs. Within this framework, it was presented the significance of granting furloughs for the prisoners, the well-functioning of the prison and the community. Alongside of this the legal nature of the correctional institution was examined and it was proposed its confrontation as a right of all prisoners. Last but not least, a brief comparative review of the furloughs in European level was made. All the above mentioned were approached on the basis of the current legal framework until the enactment of law 4274/2014 and the research data collected from the qualitative research conducted in the correctional facility of ASKA Kassaveteia.
Spacing Homogenization in Lamellar Eutectic Arrays with Anisotropic Interphase Boundaries
Creators: name: Ignacio, Maxime
name: Plapp, Mathis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyze the effect of interphase boundary anisotropy on the dynamics of lamellar eutectic solidification fronts, in the limit that the lamellar spacing varies slowly along the envelope of the front. In the isotropic case, it is known that the spacing obeys a diffusion equation, which can be obtained theoretically by making two assumptions: (i) the lamellae always grow normal to the large-scale envelope of the front, and (ii) the Jackson-Hunt law that links lamellar spacing and front temperature remains locally valid. For anisotropic boundaries, we replace hypothesis (i) by the symmetric pattern approximation, which has recently been found to yield good predictions for lamellar growth direction in presence of interphase anisotropy. We obtain a generalized Jackson-Hunt law for tilted lamellae, and an evolution equation for the envelope of the front. The latter contains a propagative term if the initial lamellar array is tilted with respect to the direction of the temperature gradient. However, the propagation velocity of the propagative wave modes are found to be small, so that the dynamics of the front can be reasonably described by a diffusion equation with a diffusion coefficient that is modified with respect to the isotropic case.
description: 30 pages, 8 figures
Rigorous Bounds on the Performance of a Hybrid Dynamical Decoupling-Quantum Computing Scheme
Creators: name: Khodjasteh, K.
name: Lidar, D. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study dynamical decoupling in a multi-qubit setting, where it is combined with quantum logic gates. This is illustrated in terms of computation using Heisenberg interactions only, where global decoupling pulses commute with the computation. We derive a rigorous error bound on the trace distance or fidelity between the desired computational state and the actual time-evolved state, for a system subject to coupling to a bounded-strength bath. The bound is expressed in terms of the operator norm of the effective Hamiltonian generating the evolution in the presence of decoupling and logic operations. We apply the bound to the case of periodic pulse sequences and find that in order maintain a constant trace distance or fidelity, the number of cycles -- at fixed pulse interval and width -- scales in inverse proportion to the square of the number of qubits. This sets a scalability limit on the protection of quantum computation using periodic dynamical decoupling.
description: 15 pages
CHЕT TILLARNI O'QITISHDA XALQARO TAJRIBA VA INNOVATSION YONDASHUVLARNI O'QUV JARAYONIGA TATBIQ ETISHNING AHAMIYATI
Creators: name: Ilhomjon To'xtasinov,  pedagogika fanlari doktori, professor O'zDJTU rektori
Publisher: name: Zenodo
Year: 2023

description: Bugungi kun har bir mutaxassisdan yuqori saviya, professional mahorat, yuksak bilim va ko‘nikmalarga ega bo‘lishni talab etmoqda. “O‘zbekiston Respublikasi oliy ta’lim tizimini 2030-yilgacha rivojlantirish konsepsiyasini tasdiqlash to‘g‘risida”gi PF-5847-sonli O‘zbekiston Respublikasi Prezidentining farmonida ham “gumanitar va pedagogik yo‘nalishlarda kadrlar tayyorlash sifatiga e’tiborni kuchaytirish, pedagogik ta’lim yo‘nalishlari va mutaxassisliklari bo‘yicha o‘quv reja va dasturlarini ilg‘or xorijiy tajriba asosida qayta ko‘rib chiqish va takomillashtirish, mazkur yo‘nalishda tahsil olayotgan talabalarda ta’lim jarayonida zamonaviy pedagogik texnologiyalarni qo‘llash ko‘nikmalarini shakllantirish, pedagogik ta’lim infratuzilmasini yaxshilash, hududlardagi barcha umumta’lim maktablariga xorijiy tillarni o‘zlashtirgan, yuqori malakali professional pedagog kadrlarni yetkazib berish; ilg‘or xorijiy tajribalar asosida oliy ta’lim muassasalariga yuqori malakali pedagog kadrlarni maqsadli tayyorlash, qayta tayyorlash va malakasini oshirish tizimini takomillashtirib borish; oliy ta’lim muassasalarida o‘quv-uslubiy faoliyat uchun mas’ul bo‘lgan mutaxassislar malakasini muntazam oshirib borish; ta’lim yo‘nalishlari va mutaxassisliklari bo‘yicha xorijiy tillarda o‘qitiladigan mutaxassislik fanlari salmog‘ini oshirib borish; oliy ta’lim muassasalarida milliy hamda xalqaro baholash tizimlari sertifikatlariga ega bo‘lgan, xorijiy tillarni mukammal o‘zlashtirgan professor-o‘qituvchilar va talabalar ulushini tizimli ravishda oshirib borish”  kabi vazifalar qo‘yilgan. Shunday ekan, hozirgi kunda nafaqat ijtimoiy-gumanitar, balki barcha sohalarni rivojlanishida xorijiy tajribalardan voqif bo‘lish, jumladan chet tillarni zamon talabida chuqurlashtirilgan tarzda o‘qitish va o‘rganish zarurdir.
Sensing Single Photon in a Cat State
Creators: name: Arman
name: Tyagi, Gargi
name: Panigrahi, Prasanta K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The cat state is shown to `store' a single photon through the superposition of its orthogonal counterpart with itself, and an excited oscillator state. Photon addition leads to a $π$ phase shift at origin in the observed phase space interference of the Wigner function, which also displays negativity, controlled by the average photon number ($|α|^2$) of coherent states comprising the cat state. The maxima and minima of the sub-Planck tiles in the phase space of the kitten state are interchanged after photon addition, leading to their orthogonality. Interestingly, photon addition to Yurke-Stoler state characterized by Poissonian statistics leads to a sub-Poissonian distribution.
Microscopic analysis of high harmonic generation in semiconductors with degenerate bands
Creators: name: Thong, Le Huu
name: Ngo, Cong
name: Duc, Huynh Thanh
name: Song, Xiaohong
name: Meier, Torsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on the multiband semiconductor Bloch equations a microscopic approach to high-harmonic generation in crystalline solids which is able to properly describe degenerate bands and band crossings is presented and analyzed. It is well-known that numerical band structure calculations typically provide electronic wave functions with an undetermined k-dependent phase which results in matrix elements which contain arbitrary k-dependent phases. In addition, such approaches usually mix degenerate bands and bands with an energy difference smaller than the numerical precision in an arbitrary way for each point in k-space. These ambiguities are problematic if one considers the dynamics induced by electric fields since the matrix elements of the position operator involve a derivative of the wave functions with respect to k. When the light-matter interaction is described in the length gauge, the problem of arbitrary phases and degenerate subspace mixing of Bloch states is solved by adopting a smooth gauge transformation along the field direction. The results obtained within this method are validated by comparing with calculations in the velocity gauge. Although we obtain in both gauges the same overall result, the length gauge is advantageous since it converges with a smaller number of bands and thus requires significantly less numerical effort than the velocity gauge. Also an unique distinction between inter- and intraband contributions and thus an instructive physical interpretation is possible in the length gauge whereas in the velocity gauge this is unclear. The computed polarization-direction-dependent high-harmonic spectra agree well with experimental data reported for GaAs. Furthermore, it is demonstrated that, under proper conditions, the Berry curvature is largely responsible for the even-order harmonics which are polarized perpendicular to the driving field.
description: 7 pages, 3 figures
Γνωσιακά Πρωτόκολλα Ελέγχου Πρόσβασης στο Μέσο για Ασύρματα Δίκτυα
Creators: name: Κάκαλου, Ιωάννα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Γνωσιακά Πρωτόκολλα
γνωστικά ασύρματα δίκτυα
Γνωσιακά Ασύρματα Δίκτυα
Πρωτόκολλα Ελέγχου Πρόσβασης στο Μέσο
Ασύρματα Δίκτυα
Έλεγχος Πρόσβασης στο Μέσο
Cognitive Radio Networks
Medium Access Control Protocols
Wireless Networks
Medium Access Control
Ioanna Kakalou
ιωάννα κάκαλου

description: Η παρούσα μεταπτυχιακή εργασία ασχολείται με τα Γνωσιακά Ασύρματα Δίκτυα που προτάθηκαν για να καλύψουν την ολοένα αυξανόμενη ζήτηση για φάσμα όπως και να αξιοποιήσει καλύτερα τη χρήση των ήδη αδειοδοτημένων συχνοτήτων χρησιμοποιώντας γνωσιακές μεθόδους. Σε αυτή τη νέα τεχνολογία πρωτεύοντα ρόλο έχει ο σχεδιασμός και η υλοποίηση του Ελέγχου Πρόσβασης στο Μέσο δηλ. το Φάσμα μέσω της Δυναμικής Πρόσβασης σε αυτό και ασχολείται με τις εξελίξεις και τις τάσεις που επικρατούν στον σχεδιασμό και την υλοποίηση αυτών. Προτείνονται δύο Γνωσιακά Πρωτόκολλα Πρόσβασης στο Μέσο(Cognitive MAC) για πολλά κανάλια(multi-channel) με χρήση Μανθανόντων Αυτομάτων (Learning Automata) για την ανακάλυψη ελεύθερων καναλιών από αδειοδοτημένους χρήστες με την πρόβλεψη Ποιότητας Υπηρεσίας(QoS) ή μη και την βελτίωση της απόδοσης του δικτύου το οποίο περιγράφεται και προσομοιώνεται.
description: The aim of the present thesis was the study of Cognitive Wireless Networks that were introduced to deal with the increasing demand for frequency spectrum and maximize the utilization of the licensed spectrum using cognitive methods. In this new paradigm of designing of wireless communications the Dynamic Spectrum Access and Medium Access Control Design and Implementation are major issues and are studied. Furthermore, two Cognitive Learning-Automata based Multi-Channel Medium Access Control Protocols for Ad-Hoc Networks were proposed and simulated. Both protocols improve the performance of the network and one of these protocols provides QoS.
Multi scanning lidar measurements for resource assessment: a case study in complex terrain
Creators: name: Santos, Pedro
name: Borbón, Fernando
name: Mann, Jakob
name: Cantero, Elena
name: Vasiljević, Nikola
name: Sanz Rodrigo, Javier
name: Courtney, Michael
name: Martinez-Villagrasa, Daniel
name: Martí, Belén
name: Cuxart, Joan
Publisher: name: Zenodo
Year: 2019
Subjects: multi-lidar
resource assessment
gravity wave
atmospheric hydraulic jump
full-scale experiment

description: In this talk, we present results of multi-lidar measurements from the Alaiz Experiment (ALEX17), carried out in a collaboration between DTU Wind Energy, CENER and UIB. Dual-Doppler synchronized measurements (125 m a.g.l.) are performed by four WindScanner systems on top of a ridge and a mountain range that are 6km apart. Results provide a first step towards resource assessment using scanning lidars, at the same time featuring the challenges faced to obtain a high data availability. The most common flow patterns are also highlighted, being gravity waves from notherly winds and atmospheric hydraulic jumps from southerly winds. These atmospheric phenomena are going to be better analyzed in an upcoming journal paper.
Spatially dependent Kondo effect in Quantum Corrals
Creators: name: Rossi, Enrico
name: Morr, Dirk K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Kondo screening of a single magnetic impurity inside a non-magnetic quantum corral located on the surface of a metallic host system. We show that the spatial structure of the corral's eigenmodes lead to a spatially dependent Kondo effect whose signatures are spatial variations of the Kondo temperature, $T_K$. Moreover, we predict that the Kondo screening is accompanied by the formation of multiple Kondo resonances with characteristic spatial patterns. Our results open new possibilities to manipulate and explore the Kondo effect by using quantum corrals.
description: 4 pages 5 figures
Welsh Wreck Web Research Project (North Cardigan Bay). On-line research into the Grounding of: Rare Plant (Schooner)
Creators: name: Davies, Gareth J.S.
Publisher: name: Archaeology Data Service
Year: 2024

description: Welsh Wreck Web Research Project unpublished report series, 1
description: The Rare Plant initially sailed Trans Atlantic routes between the UK via the Azores/Portugal to Newfoundland, Brazil and the West Indies and vice versa. On some trips the Rare Plant would voyage to Mediterranean Ports in Spain, Italy and Greece from Newfoundland. After a change in ownership the Rare Plant stopped sailing Trans Atlantic and sailed between U.K, Ireland and North Sea European ports. Cargoes carried included raw materials, processed materials, fruits, fish and timber. On Oct 08th 1896, the Rare Plant ran aground during a severe storm at Abersoch Bay Wales. The crew were rescued by the Penrhyndu Abersoch Lifeboat. Reports state that the Rare Plant was wrecked. However research shows that the Rare Plant was not wrecked but was refloated and kept sailing until May 17th 1908 when she collided with a steamer near Land's End and sank. The crew were rescued.
Simulation of microswimmer hydrodynamics with multiparticle collision dynamics
Creators: name: Zöttl, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this review we discuss the recent progress in the simulation of soft active matter systems and in particular the hydrodynamics of microswimmers using the method of multiparticle collision dynamics, which solves the hydrodynamic flows around active objects on a coarse-grained level. We first present a brief overview of the basic simulation method and the coupling between microswimmers and fluid. We then review the current achievements in simulating flexible and rigid microswimmers using multiparticle collision dynamics, and briefly conclude and discuss possible future directions.
description: 14 pages, 4 figures
Ο επικούρειος ηδονισμός και η πρόσληψή του
Creators: name: Βασιλειάδου, Παρασκευή Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Επίκουρος
Ηδονή
Πρόσληψη
Epicurus
Hedonism
Interpretation

description: Πρώτος στόχος αυτής της εργασίας είναι η έκθεση της επικούρειας ηδονής συνδυασμένη με το γενικότερο πλαίσιο της ηθικής φιλοσοφίας του Κήπου, καθώς μόνο έτσι μπορεί να αποκτήσει πραγματικό νόημα ο αμφίσημος αυτός όρος του Επικούρου. Έτσι, μπορεί να ερμηνευθεί ο ρόλος της ηδονής και να κριθεί αξιολογικά ο σκοπός της. Δεύτερος στόχος είναι η παρουσίαση της κριτικής από Στωικούς, Χριστιανούς και Καντ. Η πρόσληψη φανερώνει τον τρόπο που η κάθε εποχή στοχάζεται, αναλογίζεται και τελικώς ερμηνεύει την έννοια του ηδονισμού. Η έκθεση της πρόσληψης των προαναφερθέντων ιδεολογιών θα βοηθήσει στην καλύτερη κατανόηση της κριτικής που δέχθηκε ο Επίκουρος. Τρίτος, και κυριότερος στόχος που λειτουργεί και ως αποτέλεσμα-συμπέρασμα, είναι η αθώωση του Επικούρου από τις κατηγορίες των κριτικών του και η ανάδειξή του ως μη ακραίου ηδονιστή, όπως κατηγορήθηκε, αλλά ως μετριοπαθούς ηδονιστή με όρια στις απολαύσεις, ως –αν μπορούσαμε να τον χαρακτηρίσουμε- υγιούς ηδονιστή. Πρόκειται για ένα πρόβλημα που απασχόλησε αρκετούς μελετητές, αν ο Επίκουρος ήταν τελικά καθαρά ηδονιστής ή ηθικός ηδονιστής. Λίγοι, όμως, είναι εκείνοι που πρότειναν μια «μέση» λύση, όπως κάνει αυτή η εργασία.
description: The first purpose of this M.A. thesis is the display of the epicurean hedonism within the ample framework of the Garden’s ethical philosophy, as this is the only way for the ambiguous term ηδονή to acquire a true meaning. So, the role of ηδονή can be interpreted and evaluated for its purpose. The second aim is the presentation of the Stoic, Christian and Kantian criticism. This perception manifests the modus that each epoch contemplates, thinks and finally interprets the term ηδονή. The presentation of perception by these ideologies will help for better understanding of the negative criticism which Epicurus received. The third and primal purpose which concludes and justifies the whole thesis is Epicurus’ relief from his opponents’ charges and his characterization not as an extreme hedonist - as he was accused - but as a moderate hedonist who placed limits upon pleasure˙ a robust hedonist if we could name him like that. It is about a problem that concerned several speculators˙ whether Epicurus was an extreme hedonist or an ethical one. Few suggested a moderate solution, as this M.A. thesis proposes.
Supervening illegality and international commercial arbitration
Creators: name: Biukovic, Ljiljana
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines states' influence—in the form of supervening illegality, or subsequent changes in legislation—on international commercial transactions. The topic will be examined with reference to the major world legal systems and international law and practice. A large number of international transactions are carried out under the complex terms of government intervention. However, from the present doctrinal concepts, statutory frameworks, and judicial and arbitral practice, it is possible to infer that no absolute protection from state and government intervention exists as such. The problem of frustration of contracts, as framed in all national jurisdictions and explained in fairly detailed legal theory, does not presently have any uniform remedy for parties in international trade. The study begins with a brief comparative survey of the terminology that will be used in the thesis and then moves to related general principles and theories of contract law in civil and common law countries: party autonomy, public policy, force majeure, frustration, state immunity, state sovereignty, etc. Next, it examines the status of contractual parties in international transactions within the context of changed circumstances. The inquiry includes judicial and arbitral practice related to supervening illegality. Several countries' statutory frameworks with regard to force majeure, frustration, remedial modalities, and arbitration will be introduced as well. Finally, a wide variety of international trade contracts will be examined in order to illustrate present contract drafting techniques. In the conclusion, this thesis advocates efficient and equitable adjustment of contracts and allocation of risks of loss from nonperformance caused by supervening illegality. This would be based on careful drafting of force majeure and arbitration clauses. In order to protect and ensure their interests, parties are advised both on how to define the right to adjust or terminate the contract and on the circumstances under which they could rely on that right.
Reviewing and Benchmarking Parameter Control Methods in Differential Evolution
Creators: name: Tanabe, Ryoji
name: Fukunaga, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Many Differential Evolution (DE) algorithms with various parameter control methods (PCMs) have been proposed. However, previous studies usually considered PCMs to be an integral component of a complex DE algorithm. Thus the characteristics and performance of each method are poorly understood. We present an in-depth review of 24 PCMs for the scale factor and crossover rate in DE and a large scale benchmarking study. We carefully extract the 24 PCMs from their original, complex algorithms and describe them according to a systematic manner. Our review facilitates the understanding of similarities and differences between existing, representative PCMs. The performance of DEs with the 24 PCMs and 16 variation operators is investigated on 24 black-box benchmark functions. Our benchmarking results reveal which methods exhibit high performance when embedded in a standardized framework under 16 different conditions, independent from their original, complex algorithms. We also investigate how much room there is for further improvement of PCMs by comparing the 24 methods with an oracle-based model, which can be considered to be a conservative lower bound on the performance of an optimal method.
description: This is an accepted version of a paper published in the IEEE Transactions on Cybernetics
Sustainable Air Transport by Airship?
Creators: name: Eißing, Johannes
Publisher: name: Zenodo
Year: 2020
Subjects: airship
emission
safety
costs
VTOL
fuel
eco-efficiency
aircraft
design
development
aerolectures2020
aerolectures

description: For a group of missions, airships can provide an answer to the goals set by Flightpath 2050 such as drastic emission reductions, safety, and cost reduction. Where slow and low flying as well as vertical take-off and landing are prerequisites, airships offer a tried and tested alternative with considerable fuel savings. The lecture is dedicated to the topic of eco-efficiency in aircraft design. Advantages of airships versus obstacles and boundary conditions in airship development are discussed.
description: Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
When are networks truly modular?
Creators: name: Reichardt, Joerg
name: Bornholdt, Stefan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Study of the cluster- or community structure of complex networks makes an important contribution to the understanding of networks at a functional level. Despite the many efforts, no definition of community has been agreed on and important aspects such as the statistical significance and theoretical limits of community detection are not well understood. We show how the problem of community detection can be mapped onto finding the ground state of an infinite range spin glass. The ground state energy then corresponds directly to the quality of the partition. The network modularity Q previously defined by Girvan and Newman [Phys. Rev. E, 69, 026113 (2004)] turns out to be a special case of this spin glass energy. Through this spin glass analogy, we are able to give expectation values for the modularity of random graphs that can be used in the assessment of the statistical significance of real network clusterings. Further, it allows for assessing the theoretical limits of community detection.
Column-partitioned matrices over rings without invertible transversal submatrices
Creators: name: Foldes, Stephan
name: Lehtonen, Erkko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 05A05, 15A30

description: Let the columns of a $p \times q$ matrix $M$ over any ring be partitioned into $n$ blocks, $M = [M_1, ..., M_n]$. If no $p \times p$ submatrix of $M$ with columns from distinct blocks $M_i$ is invertible, then there is an invertible $p \times p$ matrix $Q$ and a positive integer $m \leq p$ such that $QM = [QM_1, ..., QM_n]$ is in reduced echelon form and in all but at most $m-1$ blocks $QM_i$ the last $m$ entries of each column are either all zero or they include a non-zero non-unit.
description: 5 pages
Streaming Motions Towards the Supermassive Black Hole in NGC 1097
Creators: name: Fathi, Kambiz
name: Storchi-Bergmann, Thaisa
name: Riffel, Rogemar A.
name: Winge, Claudia
name: Axon, David J.
name: Robinson, Andrew
name: Capetti, Alessandro
name: Marconi, Alessandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used GMOS-IFU and high resolution HST-ACS observations to map, in unprecedented detail, the gas velocity field and structure within the 0.7 kpc circumnuclear ring of the SBb LINER/Seyfert 1 galaxy NGC 1097. We find clear evidence of radial streaming motions associated with spiral structures leading to the unresolved (<3.5 parsecs) nucleus, which we interpret as part of the fueling chain by which gas is transported to the nuclear starburst and supermassive black hole.
description: 4 pages, 3 figures using emulateapj. Accepted for publication in Astrophysical Journal Letters. Download high-resolution version from http://www.astro.uu.se/~kambiz/DOC/paper-N1097.pdf