cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraining {\it CP} violation in a softly broken $A_4$ symmetric Model
Creators: name: Adhikary, Biswajit
name: Ghosal, Ambar
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: To understand the mass spectra of charged lepton and neutrino $A_4$ symmetry has been proposed in addition with the Standard $SU(2)_L\times U(1)_Y$ model. We break $A_4$ symmetry softly and the deviation from the tri-bimaximal mixing arises due to Zee mechanism. In the present work, we express two mixing angles $θ_{13}$ and $θ_{23}$ in terms of a single model parameter and experimental observables, such as, mixing angle $θ_{12}$, mass squared differences $Δm^2_{21}$ and $Δm^2_{32}$. Using the experimental values of $θ_{23}$, $θ_{12}$, $Δm^2_{21}$ and $Δm^2_{32}$ we restrict the model parameter and we predict $θ_{13}$. This model gives rise to $θ_{13}\simeq 11^\circ$ if we allow $1σ$ deviation of $θ_{23}$ and $2^\circ$ deviation of $θ_{12}$ from their best fit values. Utilizing all those constraints, we explore the extent of CP violation parameter $J_{\rm CP}$ in the present model and found a value of $J_{\rm CP}\approx 2.65\times 10^{-3}$ (for $1σ$ deviation of $θ_{23}$ and $2^\circ$ deviation of $θ_{12}$) consistent with the other neutrino experimental results. We have studied the mass pattern of neutrino and neutrinoless double beta decay $(ββ_{0ν})$ parameter $|(M_ν)_{ee}|$ in this model.
description: 16 pages, 6 eps figures,revised materials and figures, version to appear in Phys.Rev. D
Universally-convergent Squared-operator Iteration Methods for Solitary Waves in General Nonlinear Wave Equations
Creators: name: Yang, Jianke
name: Lakoba, Taras
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Three new iteration methods, namely the squared-operator method, the modified squared-operator method, and the power-conserving squared-operator method, for solitary waves in general scalar and vector nonlinear wave equations are proposed. These methods are based on iterating new differential equations whose linearization operators are squares of those for the original equations, together with acceleration techniques. The first two methods keep the propagation constants fixed, while the third method keeps the powers (or other arbitrary functionals) of the solution fixed. It is proved that all these methods are guaranteed to converge to any solitary wave (either ground state or not) as long as the initial condition is sufficiently close to the corresponding exact solution, and the time step in the iteration schemes is below a certain threshold value. Furthermore, these schemes are fast-converging, highly accurate, and easy to implement. If the solitary wave exists only at isolated propagation constant values, the corresponding squared-operator methods are developed as well. These methods are applied to various solitary wave problems of physical interest, such as higher-gap vortex solitons in the two-dimensional nonlinear Schrödinger equations with periodic potentials, and isolated solitons in Ginzburg-Landau equations, and some new types of solitary wave solutions are obtained. It is also demonstrated that the modified squared-operator method delivers the best performance among the methods proposed in this article.
description: 50 pages, 8 figures
Νοηματικός Σχεδιασμός έκθεσης με τίτλο «Θεατρικός Οκτώβρης» με βάση τη συλλογή και το αρχείο Γ.Κωστάκη στο Κρατικό Μουσείο Σύγχρονης Τέχνης
Creators: name: Ξενέλλη, Σοφία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ρωσική πρωτοπορία
Θεατρικός Οκτώβρης
Μουσειολογία
Russian Avant-Garde
Theatrical October
Museology

description: Στη συγκεκριμένη διατριβή παρουσιάζεται μια πρόταση έκθεσης με βασικό άξονα το ρωσικό πρωτοποριακό θέατρο. Τέσσερα θεατρικά έργα , κυρίως από τη δεκαετία του 1920, παίρνουν ξανά ζωή μέσα από τη συλλογή του Γ. Κωστάκη. Στο πλαίσιο της μελέτης για την έκθεση παρουσιάζονται και διερευνώνται τα καλλιτεχνικά γεγονότα που κινητοποίησε η Οκτωβριανή επανάσταση , καθώς επίσης και η επίδραση των πολιτικών εξελίξεων και ιδεολογιών στον καλλιτεχνικό κόσμο του 20ου αι. στη Ρωσία. Η διάσημη συλλογή του Γ.Κωστάκη μας παρέχει τα τεκμήρια θεατρικής ζωής, αυτής της πολύ ενδιαφέρουσας περιόδου, που χαρακτηρίζεται από σύνθεση τεχνών και συνεργασίες μεγάλων καλλιτεχνών, όπως οι Βσέβολοντ Μέγερχολντ, Καζιμίρ Μαλέβιτς και Λιουμπόβ Ποπόβα. Διαβάζοντας τη μελέτη ο αναγνώστης ανακαλύπτει ότι εκτός από τον γνωστό επαναστατικό Οκτώβρη υπήρχε και ένας άλλος , θεατρικός Οκτώβρης με εξίσου επαναστατικό και ριζοσπαστικό χαρακτήρα.
description: This thesis presents a suggestion about an exhibition concerning the Russian pioneering theater. Certain plays , mostly from the 1920’s decade, are presented thanks to the G.Costakis collection. We examined the results of the Russian Revolution and politics in the art world. The famous G.Kostakis collection gives us the opportunity to tell the story of theater life during the 20th century in Russia and shed light on a very interesting period which was characterized by big artistic cooperations like the one between Vsevolod Meyerhold and Kazimir Malevich or Liubov Popova. By reading this thesis the reader will come to the conclusion that apart from the well known Russian Revolution which took place on October of 1917, there was also a Theatrical October with the same spark and magnitude.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Effects of Molecular Diffusivity on Shock Wave Structures in Monatomic Gases
Creators: name: Reddy, M. H. Lakshminarayana
name: Dadzie, S. Kokou
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a full investigation into shock wave profile description using hydrodynamics models. We identified constitutive equations that provide better agreement for all parameters involved in testing hydrodynamic equations for the prediction of shock structure in a monatomic gas in the Mach number range $1.0-11.0$. The constitutive equations are extracted from a previously derived thermomechanically consistent Burnett regime continuum flow model. The numerical computations of the resulting hydrodynamic equations along with classical ones are performed using a finite difference global solution (FDGS) scheme. Compared to previous studies that focussed mainly on the density profile across the shock, here we also include temperature profiles as well as non-negativity of entropy production throughout the shock. The results obtained show an improvement upon those obtained previously in the bi-velocity (or volume/mass diffusion) hydrodynamics and are more accurate than in the hydrodynamic models from expansions method solutions to the Boltzmann equation.
description: arXiv admin note: text overlap with arXiv:1909.02631
Nuclear spin-lattice relaxation time in UCoGe
Creators: name: Mineev, V. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The NMR measurements performed on a single orthorhombic crystal of superconducting ferromagnet UCoGe (Y.Ihara et al, Phys. Rev. Lett. v.105, 206403 (2010)) demonstrate strongly anisotropic magnetic properties of this material. The presented calculations allow to establish the dependence of longitudinal spin-lattice relaxation rate from temperature and magnetic field. The value 1/T_1T in field perpendicular to spontaneous magnetisation directed along c-axis has maximum in vicinity of Curie temperature whereas it does not reveal similar behaviour in field parallel to the direction of spontaneous magnetisation. Also there was shown that the longitudinal spin-lattice relaxation rate is strongly field dependent when the field directed in b-crystallographic direction but field independent if magnetic field is oriented along a-axis.
description: 4 pages, 1 figure
Isospectral Hamiltonians from Moyal products
Creators: name: Faria, Carla Figueira de Morisson
name: Fring, Andreas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently Scholtz and Geyer proposed a very efficient method to compute metric operators for non-Hermitian Hamiltonians from Moyal products. We develop these ideas further and suggest to use a more symmetrical definition for the Moyal products, because they lead to simpler differential equations. In addition, we demonstrate how to use this approach to determine the Hermitian counterpart for a Pseudo-Hermitian Hamiltonian. We illustrate our suggestions with the explicitly solvable example of the -x^4-potential and the ubiquitous harmonic oscillator in a complex cubic potential.
description: 10 pages, to appear special issue Czech. J. Phys
Gap solitons in Bose-Einstein condensates in linear and nonlinear optical lattices
Creators: name: Abdullaev, Fatkhulla
name: Abdumalikov, Abdulaziz
name: Galimzyanov, Ravil
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Properties of localized states on array of BEC confined to a potential, representing superposition of linear and nonlinear optical lattices are investigated. For a shallow lattice case the coupled mode system has been derived. The modulational instability of nonlinear plane waves is analyzed. We revealed new types of gap solitons and studied their stability. For the first time a moving soliton solution has been found. Analytical predictions are confirmed by numerical simulations of the Gross-Pitaevskii equation with jointly acting linear and nonlinear periodic potentials.
description: 9 pages, 14 figures
Σχέσεις Κύπρου και μητροπολιτικής Ελλάδας κατά τον πέμπτο και τέταρτο αιώνα π.Χ.
Creators: name: Παπαδόπουλος, Θεόδωρος Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Σχέσεις
Κύπρος
Μητροπολιτική Ελλάδα
Relations
Cyprus
Mainland Greece

description: Στόχος αυτής της μεταπτυχιακής εργασίας αποτελεί η μελέτη των σχέσεων ανάμεσα στην Κύπρο και τη μητροπολιτική Ελλάδα κατά την κλασική εποχή (5ος-4ος αιώνας π.Χ.). Παράλληλα, θα επισημανθούν οι τάσεις που επικράτησαν στην προγενέστερη έρευνα και οι διάφορες ερμηνείες που προτάθηκαν αναφορικά με τις σχέσεις αυτές. Η εργασία διαχωρίζεται σε τρία διαφορετικά μέρη: την εισαγωγή, το κυρίως μέρος και τα συμπεράσματα. Το κύριο μέρος απαρτίζεται από οκτώ κεφάλαια. Στο πρώτο κεφάλαιο θα εξεταστούν, με τη βοήθεια των γραμματειακών πηγών, των επιγραφών και των αρχαιολογικών ανακαλύψεων, διάφορες πτυχές του θεσμού της κυπριακής βασιλείας, η εικόνα που είχε ο ελληνικός κόσμος για την Κύπρο και μορφές υποτέλειας των βασιλείων σε μεγάλες δυνάμεις της εποχής, από τότε που πρωτοεμφανίζεται στην Κύπρο μέχρι την κατάλυση των βασιλείων. Στο δεύτερο κεφάλαιο θα αναφερθούν και θα αναλυθούν οι μύθοι σχετικά με την ίδρυση των πόλεων της Κύπρου. Από το τρίτο έως το όγδοο κεφάλαιο θα καλυφτούν με χρονολογική σειρά τα πολιτικά γεγονότα, τα οποία αφορούν στις σχέσεις της Κύπρου με τον ελληνικό κόσμο, ξεκινώντας από τη συνεργασία με τους Ίωνες και τη συμβολή της στον αγώνα εναντίον των Περσών και καταλήγοντας στην εξάλειψη των κυπριακών βασιλείων στα πλαίσια των ανταγωνισμών των ελληνιστικών μοναρχών. Τέλος, στο ένατο κεφάλαιο θα ακολουθήσει εξέταση των μαρτυρίων σχετικά με την παρουσία Κυπρίων στις ελληνικές πόλεις.
description: The aim of this Master’s thesis is the study of the relations between Cyprus and mainland Greece in the classical period. Alongside, they will be highlighted the trends that prevailed in the former research and the different interpretations that were proposed regarding these relations. The thesis is divided in three different parts: the introduction, the main part and the conclusions. The main part is composed by 8 chapters. In the first chapter will be examined, with the help of literal sources, inscriptions and archaeological discoveries, various aspects of the institution of Cypriot kingship, the image that Greek world had for Cyprus and forms of vassalage of the kingdoms under big powers of the period, since it first appeared until the catalysis of the kingdoms. In the second chapter they will be referred and analyzed the myths about the foundation of the cities of Cyprus. From the third till the eighth chapter will be covered by chronological order the political events, that concern the relations of Cyprus with the Greek world, beginning with the cooperation with the Ionians and the contribution in the struggle against the Persians and resulting in the elimination of Cypriot kingdoms in the contest of competition of the Hellenistic monarchs. Lastly, in the ninth chapter will follow an examination of the testaments about the presence of Cypriots in the Greek cities.
อิทธิพลของการสื่อสารการตลาดต่อการตัดสินใจซื้อเสื้อผ้าสำเร็จรูปของสุภาพสตรีผ่านเครือข่ายสังคมออนไลน์ : กรณีศึกษากรุงเทพมหานคร
Creators: name: อมรรัตน์  ทันมา
Publisher: name: คณะเทคโนโลยีสื่อสารมวลชน  มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2558
Subjects: การสื่อสารการตลาด,การตัดสินใจซื้อ,เครือข่ายสังคมออนไลน์,เสื้อผ้าสำเร็จรูป,สุภาพสตรี

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
On Mathews Correlation Coefficient and Improved Distance Map Loss for Automatic Glacier Calving Front Segmentation in SAR Imagery
Creators: name: Davari, Amirabbas
name: Islam, Saahil
name: Seehaus, Thorsten
name: Braun, Matthias
name: Maier, Andreas
name: Christlein, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The vast majority of the outlet glaciers and ice streams of the polar ice sheets end in the ocean. Ice mass loss via calving of the glaciers into the ocean has increased over the last few decades. Information on the temporal variability of the calving front position provides fundamental information on the state of the glacier and ice stream, which can be exploited as calibration and validation data to enhance ice dynamics modeling. To identify the calving front position automatically, deep neural network-based semantic segmentation pipelines can be used to delineate the acquired SAR imagery. However, the extreme class imbalance is highly challenging for the accurate calving front segmentation in these images. Therefore, we propose the use of the Mathews correlation coefficient (MCC) as an early stopping criterion because of its symmetrical properties and its invariance towards class imbalance. Moreover, we propose an improvement to the distance map-based binary cross-entropy (BCE) loss function. The distance map adds context to the loss function about the important regions for segmentation and helps accounting for the imbalanced data. Using Mathews correlation coefficient as early stopping demonstrates an average 15% dice coefficient improvement compared to the commonly used BCE. The modified distance map loss further improves the segmentation performance by another 2%. These results are encouraging as they support the effectiveness of the proposed methods for segmentation problems suffering from extreme class imbalances.
Quantum Mechanical Heat Transport in Disordered Harmonic Chains
Creators: name: Gaul, Christopher
name: Büttner, Helmut
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the mechanism of heat conduction in ordered and disordered harmonic onedimensional chains within the quantum mechanical Langevin method. In the case of the disordered chains we find indications for normal heat conduction which means that there is a finite temperature gradient but we cannot clearly decide whether the heat resistance increases linearly with the chain length. Furthermore we observe characteristic quantum mechanical features like Bose-Einstein statistics of the occupation numbers of the normal modes, freezing of the heat conductivity and the influence of the entanglement within the chain on the current. For the ordered chain we recover some classical results like a vanishing temperature gradient and a heat flux independent of the length of the chain.
description: 12 pages, 15 figures
Improvements in Micro-CT Method for Characterizing X-ray Monocapillary Optics
Creators: name: Wang, Zhao
name: Pan, Kai
name: Zhang, Shuang
name: Duo, Zhuxuan
name: Liu, Zhiguo
name: Sun, Tianxi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Accurate characterization of the inner surface of X-ray monocapillary optics (XMCO) is of great significance in X-ray optics research. Compared with other characterization methods, the micro computed tomography (micro-CT) method has its unique advantages but also has some disadvantages, such as a long scanning time, long image reconstruction time, and inconvenient scanning process. In this paper, sparse sampling was proposed to shorten the scanning time, GPU acceleration technology was used to improve the speed of image reconstruction, and a simple geometric calibration algorithm was proposed to avoid the calibration phantom and simplify the scanning process. These methodologies will popularize the use of the micro-CT method in XMCO characterization.
Lifshitz theory of wetting films at three phase coexistence: The case of ice nucleation on Silver Iodide (AgI)
Creators: name: Luengo-Márquez, Juan
name: MacDowell, Luis G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Hypothesis: As a fluid approaches three phase coexistence, adsorption may take place by the successive formation of two intervening wetting films. The equilibrium thickness of these wetting layers is the result of a delicate balance of intermolecular forces, as dictated by an underlying interface potential. The van der Waals forces for the two variable adsorption layers may be formulated exactly from Dzyaloshinskii-Lifshitz-Pitaevskii theory, and analytical approximations may be derived that extent well beyond the validity of conventional Hamaker theory. Calculations: We consider the adsorption equilibrium of water vapor on Silver Iodide where both ice and a water layers can form simultaneously and compete for the vapor as the triple point is approached. We perform numerical calculations of Lifshitz theory for this complex system and work out analytical approximations which provide quantitative agreement with the numerical results. Findings: At the three phase contact line between AgI/water/air, surface forces promote growth of ice both on the AgI/air and the water/vapor interfaces, lending support to a contact nucleation mode of AgI in the atmosphere. Our approach provides a framework for the description of adsorption at three phase coexistence, and allows for the study of ice nucleation efficiency on atmospheric aerosols.
description: Accepted Manuscript
Empirical Neutrino Mass Matrix Related to Up-Quark Masses
Creators: name: Koide, Yoshio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Based on an approach to quark and lepton masses, where the mass spectra originate in vacuum expectation values of U(3) flavor nonet (gauge singlet) scalars, neutrino masses and mixing are investigated. As an offshoot of this approach, it is found that an empirical neutrino mass matrix which is described in terms of the up-quark and charged lepton masses can accommodate to a nearly tribimaximal mixing.
description: 12 pages, 2 figures, version to appear in J.Phys.G
Fluorine Abundance Variations as a Signature of Enhanced Extra Mixing in Red Giants of the Globular Cluster M4
Creators: name: Denissenkov, Pavel A.
name: Pinsonneault, Marc
name: Terndrup, Donald M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that enhanced extra mixing in low-mass red giants can result in a fluorine abundance that is correlated with abundance variations of other elements participating in H burning, such as C, N, O and Na. This finding is used to explain the fluorine abundance variations recently found in bright red giants of the globular cluster M4.
description: 17 pages, 6 figures, submitted to ApJ
Electric and Magnetic Black Hole Solutions of Moller's Four-Momentum
Creators: name: Binbay, Figen
name: Pirinccioglu, Nurettin
name: Salti, Mustafa
name: Aydogdu, Oktay
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper has been removed by arXiv administrators because it plagiarizes hep-th/0311050, gr-qc/0306101, gr-qc/9601044, gr-qc/0412111, hep-th/9604047, and gr-qc/0212018.
description: This submission has been withdrawn by arXiv administrators due to inappropriate text reuse from external sources
Higher discriminants of polynomials
Creators: name: Shakirov, Sh.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 26C10 (Primary) 16W22, 65H05 (Secondary)

description: We propose a method for constructing systems of polynomial equations that define submanifolds of degenerate binary forms of an arbitrary degeneracy degree. It is appropriate to call these systems of equations "higher discriminants".
description: 12 pages
Accelerating universe, WEP violation and antihydrogen atoms
Creators: name: Fujii, Yasunori
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Apart from the suspected violation of the CPT invariance, we might expect if the measurements of antihydrogen atoms provide testing Weak Equivalence Principle (WEP) in the gravitational phenomena. We start with how its violation can be related to the expected idea of unification of particle physics and gravitation, an attempt beyond the standard theories, including general relativity of Einstein. A particular emphasis will be placed on the issue of an accelerating universe, a rather recent development since nearly 10 years ago, suggesting a strong motivation toward attempts beyond the conventional concepts of the traditional cosmology. We face today's version of the cosmological constant problem. A candidate of the new ingredient appears to be provided by a scalar field, sometimes under the names like quintessence or dark-energy. In this article, we discuss the subject from a point of view of a more theoretical approach based on the scalar-tensor theory of gravitation. By exploiting the concepts of conformal transformations and conformal frames unique to this type of approach, we show that a successful understanding of the observed cosmological acceleration entails an unexpected outcome of breakdown of WEP, which may show up as a distinct behavior between hydrogen and antihydrogen in the gravitational influence, from a further wider perspective including a vector field as well. We intended to introduce most of the new concepts as plainly and briefly as possible, according to the nature of the talk. On the other hand, however, we find it also useful to go into some more details, depending on the interests of individuals among the audience. For a compromise, we decided to add a number of footnotes which were not delivered during the presentation, but might be helpful in the proceedings published later.
description: 12 pages, 5 figures. Prepared for the Proceedings of the Workshop on Cold Antimatter Plasmas and Application to Fundamental Physics, February 20-22, 2008, Naha, Okinawa, Japan. Due to a technical problem, diagrams in Fig. 4 in the original Proceedings are replaced here by simplified versions. Corrected fig
Additional file 3: of Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model
Creators: name: Guo, Hui
name: Wang, Tianyun
name: Wu, Huidan
name: Long, Min
name: Coe, Bradley
name: Li, Honghui
name: Xun, Guanglei
name: Ou, Jianjun
name: Chen, Biyuan
name: Duan, Guiqin
name: Bai, Ting
name: Zhao, Ningxia
name: Shen, Yidong
name: Li, Yun
name: Wang, Yazhe
name: Zhang, Yu
name: Baker, Carl
name: Liu, Yanling
name: Pang, Nan
name: Huang, Lian
name: Han, Lin
name: Jia, Xiangbin
name: Liu, Cenying
name: Ni, Hailun
name: Yang, Xinyi
name: Xia, Lu
name: Chen, Jingjing
name: Shen, Lu
name: Li, Ying
name: Zhao, Rongjuan
name: Zhao, Wenjing
name: Peng, Jing
name: Pan, Qian
name: Long, Zhigao
name: Su, Wei
name: Tan, Jieqiong
name: Du, Xiaogang
name: Ke, Xiaoyan
name: Yao, Meiling
name: Hu, Zhengmao
name: Zou, Xiaobing
name: Zhao, Jingping
name: Bernier, Raphael
name: Eichler, Evan
name: Xia, Kun
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Figure S2. QC of MIPs cohort. QC analysis of the percentage of MIPs with at least eight reads per sample. (PDF 84 kb)
High tone spreading, tense and aspect
Creators: name: Doko, Jeanne
name: Koutouan, Evelyne
name: Jarvis, Rebecca
name: Russell, Katherine
name: Kouadio, Timothée
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: ebr

description: Elicitation of contexts involving high toned verbs with following nominal objects of different tone melodies, as well as associative constructions in which the possessor has a final H tone. Elicitation of tense and aspect in particular contexts.
Διερεύνηση των πολιτικών θεμάτων του Helpmevote στο Twitter
Creators: name: Παπαξάνθη, Δήμητρα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ηλεκτρονικοί Σύμβουλοι Ψήφου
Προτάσεις
Δεδομένα του Twitter
VAAs
Statements
Twitter data

description: Voting Advice Applications are widely used in many European countries. Someone can argue that their biggest contribution is the reduction of the information costs that voters have to bear in order to make a rational choice. Building VAAs is a complicated process composed from many steps. Statements’ selection is one of the most significant tasks because of their great influence in outcome. This thesis provides a few suggestions for the next Helpmevote’s statement selection process. Focusing on Greek Helpmevote, this paper starts with the statements used in 2015 to identify whether they still dominate the political agenda. Furthermore, an effort is made to check their discriminating power and whether certain words in statements favor certain parties. For achieving all the aforementioned goals, Τwitter data are gathered through key words originated from 2015 statements. Data are analyzed with frequencies, sentiment and tf-idf.(term frequency-inverse document frequency)
description: Οι Ηλεκτρονικοί Σύμβουλοι Ψήφου γίνονται ολοένα και πιο δημοφιλείς σε πολλές ευρωπαϊκές χώρες. Ίσως, η μεγαλύτερη συμβολή των ΗΣΨ έγκειται στο ότι μειώνουν το κόστος συγκέντρωσης και ανάλυσης πληροφοριών, το οποίο συνήθως επιβαρύνει τους ψηφοφόρους, καθώς η διαδικασία αυτή είναι απαραίτητο συστατικό για μια ορθολογική επιλογή. Ένα από τα βασικά στοιχεία σε έναν ΗΣΨ είναι οι προτάσεις που περιλαμβάνει. Η επιλογή τους είναι μια πολύπλοκη και σημαντική διαδικασία κυρίως λόγω της επιρροής τους στο αποτέλεσμα. Ο σκοπός αυτής της έρευνας είναι να δώσει κάποιες κατευθυντήριες γραμμές για τις προτάσεις που θα συμπεριληφθούν στο επόμενο Helpmevote. Ξεκινώντας λοιπόν από τις προτάσεις του Helpmevote του 2015 έχει γίνει προσπάθεια να διαπιστωθεί το κατά πόσο παραμένουν στην επικαιρότητα. Επίσης, έχει γίνει προσπάθεια να ελεγχθεί η δυνατότητα που έχουν διάφορα πολιτικά θέματα διαχωρίζουν τους ψηφοφόρους διαφορετικών κομμάτων και το κατά πόσο συγκεκριμένες διατυπώσεις μπορούν να ωφελήσουν συγκεκριμένα κόμματα. Για την επίτευξη των στόχων, θα συγκεντρωθούν tweets με βάση λέξεις κλειδιά προερχόμενες από τις προτάσεις του 2015 και θα αναλυθούν χρησιμοποιώντας ανάλυση συχνοτήτων, συναισθημάτων και τον συντελεστή tf-idf (συχνότητα όρου-αντίστροφη συχνότητα κειμένων)
Employee helping behaviours towards robots - Explicit reciprocity
Creators: name: Becker, Marc
name: Efendic, Emir
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Business

description: This study investigates whether employees are less likely to help a robotic (vs human) co-worker. It also investigates what role reciprocity plays. The study is set in a restaurant context.
Additional file 4: of Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model
Creators: name: Guo, Hui
name: Wang, Tianyun
name: Wu, Huidan
name: Long, Min
name: Coe, Bradley
name: Li, Honghui
name: Xun, Guanglei
name: Ou, Jianjun
name: Chen, Biyuan
name: Duan, Guiqin
name: Bai, Ting
name: Zhao, Ningxia
name: Shen, Yidong
name: Li, Yun
name: Wang, Yazhe
name: Zhang, Yu
name: Baker, Carl
name: Liu, Yanling
name: Pang, Nan
name: Huang, Lian
name: Han, Lin
name: Jia, Xiangbin
name: Liu, Cenying
name: Ni, Hailun
name: Yang, Xinyi
name: Xia, Lu
name: Chen, Jingjing
name: Shen, Lu
name: Li, Ying
name: Zhao, Rongjuan
name: Zhao, Wenjing
name: Peng, Jing
name: Pan, Qian
name: Long, Zhigao
name: Su, Wei
name: Tan, Jieqiong
name: Du, Xiaogang
name: Ke, Xiaoyan
name: Yao, Meiling
name: Hu, Zhengmao
name: Zou, Xiaobing
name: Zhao, Jingping
name: Bernier, Raphael
name: Eichler, Evan
name: Xia, Kun
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Figure S3. Fraction of target based on >â 8-fold sequence coverage by gene. Box and whisker plots show the fraction of a sampleâ s target bases at 8X or greater coverage split by gene. All capture samples are included (along with QC failures). (PDF 109 kb)
ความสัมพันธ์ระหว่างความพึงพอใจในการบริหารงานกับจริยธรรมของผู้จัดการนิติบุคคลอาคารชุด
Creators: name: ศิระ โสตถิภิญโญ
Publisher: name: มหาวิทยาลัยราชภัฏพระนคร
Year: 2558
Subjects: ความพึงพอใจ,จริยธรรม,อาคารชุด

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
แนวทางการส่งสริมการตีพิมพ์บทความวิจัยในวารสารของคณาจารย์และนักวิจัย มหาวิทยาลัยสุโขทัยธรรมาธิราช
Creators: name: ลัคนา  พูลเจริญ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยสุโขทัยธรรมาธิราช
Year: 2558
Subjects: การตีพิมพ์บทความวิจัย,แนวทางส่งเสริม

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
แนวทางการพัฒนาสุนัขพันธุ์ไทยบางแก้วสู่สายพันธุ์ใหม่ของโลก ในมิติทางสังคมศาสตร์
Creators: name: รสิกา  อังกูร
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยสุโขทัยธรรมาธิราช
Year: 2558
Subjects: สุนัขไทย,สุนัขพันธุ์ไทยสปิตซ์,สุนัขพันธุ์ไทยบางแก้ว

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
การพัฒนาตัวแบบการบริหารองค์กรปกครองส่วนท้องถิ่นสู่องค์การสมรรถนะสูง
Creators: name: เสน่ห์  จุ้ยโต
Publisher: name: สาขาวิชาวิทยาการจัดการ มหาวิทยาลัยสุโขทัยธรรมาธิราช
Year: 2558
Subjects: องค์การสมรรถนะสูง,การพัฒนา,ตัวแบบ,องค์กรปกครองส่วนท้องถิ่น

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
คัมภีร์ใบลานมอญในประเทศไทย
Creators: name: พระอัครเดช ญาณเตโช (โลภะผล)
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย
Year: 2558
Subjects: มอญ,หนังสือมอญ,คัมภีร์ใบลานมอญ

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
การจัดการทรัพยากรน้ำโดยชุมชน กรณีศึกษาชุมชนแพรกหนามแดง
Creators: name: สัจจา บรรจงศิริ
Publisher: name: สาขาวิชาเกษตรศาสตร์และสหกรณ์ มหาวิทยาลัยสุโขทัยธรรมาธิราช
Year: 2558
Subjects: การจัดการทรัพยากรน้ำโดยชุมชน

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
Atti del XXII Convegno Nazionale di Agrometeorologia Ricerca ed innovazione per la gestione del rischio meteo - climatico in agricoltura
Creators: name: Ventura, Francesca
name: Poggi, Giovanni Maria
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2019
Subjects: AGR/02 Agronomia e coltivazioni erbacee
AGR/03 Arboricoltura generale e coltivazioni arboree
AGR/12 Patologia vegetale

description: Il rischio è una componente intrinseca all’attività di impresa. Nessun imprenditore, nel momento in cui assume una decisione, è sicuro delle conseguenze che essa avrà sui risultati economici. Ed è proprio il rischio connesso agli esiti delle decisioni che è all’origine del profitto. Nel caso dell’agricoltura, il carattere biologico dell’attività aggiunge un ulteriore elemento di rischio alle decisioni degli imprenditori del settore. In particolare, l’andamento meteorologico durante la stagione colturale ha un ruolo preponderante, e il rischio meteorologico viene definito come la capacità delle aziende di gestire entrate, costi e performance finanziarie sensibili alle condizioni meteorologiche. L’incertezza meteorologica è sempre esistita, ma nel nuovo clima alcuni fenomeni negativi per l’agricoltura hanno aumentato la loro frequenza, mentre altri fenomeni si sono aggiunti alla lista: temperature massima e minima oltre soglie di criticità termica, pioggia massima giornaliera oltre soglie di criticità, vento con intensità al di sopra di soglie di criticità, grandine, fulmini e tempeste elettriche, alluvioni. Inoltre si verificano con più elevata frequenza sfasamenti stagionali, precipitazioni brevi ed intense e si ha un maggiore rischio di gelate tardive. Uno o un insieme di questi fenomeni concorrono, uniti alla frequenza di accadimento, a definire la possibilità di successo dell’agricoltore. In questo contesto l’AIAM propone, per il 22° convegno Nazionale, temi riguardanti lo studio del cambiamento climatico e dei rischi per l’agricoltura, quali sono gli strumenti per la previsione e le strategie per la prevenzione del rischio, e come i servizi agrometeorologici supportano gli agricoltori nella difesa integrata delle colture agrarie.
Broad Line Radio Galaxies: Jet Contribution to the nuclear X-Ray Continuum
Creators: name: Grandi, Paola
name: Palumbo, Giorgio G. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is shown that, for Broad Line Radio Galaxies the strength of the non-thermal beamed radiation, when present, is always smaller than the accretion flow by a factor < 0.7 in the 2-10 keV band. The result has been obtained using the procedure adopted for disentangling the Flat Spectrum Radio Quasar 3C 273 (Grandi & Palumbo 2004). Although this implies a significantly smaller non-thermal flux in Radio Galaxies when compared to Blazars, the jet component, if present, could be important at very high energies and thus easily detectable with GLAST.
description: 12 pages including 2 figures (4 files), ApJ accepted
Shadows created by an array of acoustically hard cylinders above a rigid plane
Creators: name: Clark, David
Publisher: name: University of British Columbia
Year: 2009

description: Transient radiation from, and scattering by, objects of finite size is important for applications pertaining to antennas and to target identification. The goal of this thesis work was to study the waves scattered from an array of cylinders above a rigid plane by running experiments on real models using an acoustic scatter-mapping system developed by Garfield Mellema [12]. The experiments were then simulated using MatLab 4.0 on a Sun Sparc 10 workstation. The first experiments were run on three different sized cylinders with a radius of 1.3 cm (0.35 wavelengths ), 5.7 cm (1.54 wavelengths), and 10.6 cm ( 3.15 wavelengths). The second set of experiments were run on a two cylinder array with each cylinder having a radius of 5.7 cm. The parallel cylinders were placed directly above each other at varying distances apart. The simulations used the method of images and an algorithm first presented by V. Twersky which calculated the incident and scattered fields in the wave-number domain. In this paper a time domain solution was obtained by applying the inverse Fourier transform to the wave-number domain data. Twersky used a modal expansion to represent the fields scattered by each cylinder. Then the boundary conditions on each cylinder were used to determine each cylinder’s scattering coefficients. To solve for the boundary conditions on each scatterer Twersky used the addition theorem for Hankel functions to translate cylindrical co-ordinate systems between cylinders. A problem with this method, however, was that it also used a modal expansion which converged slowly for values of ka much greater than unity (k represents the wave number, and a is the cylinder radius). To overcome this convergence problem a different translation formula was derived using the integral form of the Hankel function and employing the stationary phase approximation. In addition, it was found that there was a relation between the scattering coefficients of the image cylinders and the scattering coefficients of the real cylindrical scatterers. This result was also substantiated in a study of multiple scattering by two cylinders completed by J. W. Young and J. C. Bertrand [7]. Before the field theory is presented, most of the arrival paths are determined using appropriate ray paths. Plots of the arrival path length versus speaker position are presented so that each arrival path on the real data sets and the simulations can be traced. The results of the real data sets along with the optical ray path distance plots confirm the correctness of the simulation algorithm. The simulations correctly predict the arrival distances and the destructive interference patterns found on the real data sets for the single and double cylinder case.
Doped Singlet-Pair Crystal in the Hubbard model on the checkerboard lattice
Creators: name: Poilblanc, Didier
name: Penc, Karlo
name: Shannon, Nic
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the limit of large nearest--neighbor and on--site Coulomb repulsions, the Hubbard model on the planar pyrochlore lattice maps, near quarter-filling, onto a doped quantum fully packed loop model. The phase diagram exhibits at quarter filling a novel quantum state of matter, the Resonating Singlet-Pair Crystal, an insulating phase breaking lattice symmetry. Properties of a few doped holes are investigated. In contrast to the doped quantum antiferromagnet, phase separation is restricted to very small hopping leaving an extended``window'' for superconducting pairing. However the later is more fragile for large hopping than in the case of the antiferromagnet.
description: 4 pages, 5 figures
Check List delle Briofite dell’Emilia-Romagna. Seconda edizione riveduta e ampliata
Creators: name: Fariselli, Riccardo
name: Aleffi, Michele
name: Speranza, Maria
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2019
Subjects: BIO/01 Botanica generale
BIO/02 Botanica sistematica
BIO/03 Botanica ambientale e applicata

description: Viene presentata una sintesi delle conoscenze in merito alla distribuzione delle briofite in Emilia-Romagna sulla base dei dati disponibili nei lavori pubblicati fino al 2017. Si è costruito un database di oltre 7300 record di cui 6900 effettivamente utilizzati nella compilazione della Check List. Vengono qui riportati gli elenchi delle specie segnalate (epatiche e muschi) suddivise secondo le diverse provincie. All’interno degli elenchi, per ogni segnalazione si indica la località di rinvenimento. Sulla base dei dati disponibili sono presenti in Emilia-Romagna 546 taxa (comprendenti specie, sottospecie e varietà) di cui 87 epatiche e 459 muschi.
ฉลากสำหรับผลิตภัณฑ์วัตถุอันตรายที่ใช้ในบ้านเรือนตามระบบสากล
Creators: name: ศริศักดิ์ สุนทรไชย
Publisher: name: สาขาวิชาวิทยาศาสตร์สุขภาพ มหาวิทยาลัยสุโขทัยธรรมาธิราช
Year: 2558
Subjects: ฉลาก,ผลิตภัณฑ์วัตถุอันตรายที่ใช้ในบ้านเรือน,ระบบสากล GHS

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
Superconducting properties of nanocrystalline MgB$_2$
Creators: name: Lorenz, B
name: Perner, O
name: Eckert, J
name: Chu, C W
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Nanocrystalline MgB$_2$ produced by mechanical alloying has been shown to exhibit enhanced superconducting properties such as increased pinning and higher critical currents. However, the effects of the synthesis process on the intrinsic superconducting properties have not been addressed yet. We have investigated the superconducting gap structure of nanocrystalline MgB$_2$ pellets synthesized by high-energy ball milling employing specific heat measurements. We found that the larger $σ$-gap decreased whereas the smaller $π$-gap slightly increased in ball milled MgB$_2$ as compared to bulk samples synthesized along the standard routes. The data show that the ball milling process introduces defects that enhance the interband scattering similar to irradiation with neutrons. The reduction of the $σ$-gap explains the lower superconducting transition temperature of 33 K.
The MicroBooNE Experiment, the NuMI Absorber, and Heavy Neutral Leptons
Creators: name: Kelly, Kevin J.
name: Machado, Pedro A. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Motivated by the recent search for a Higgs-Portal Scalar decaying inside the MicroBooNE detector, we demonstrate that the same search can be used to constrain Heavy Neutral Leptons. These are gauge-singlet fermions that interact with the Standard Model by mixing with neutrinos only and could be related to the origin of neutrino masses. By recasting the results of the MicroBooNE Collaboration's analysis, we show that, for a Heavy Neutral Lepton that mixes predominantly with muon-flavored neutrinos, previously unexplored parameter space can be excluded for masses between 30 and 150 MeV. Additionally, we make our Monte Carlo tools publicly available.
description: 5 pages plus references, 4 figures. Monte Carlo code available at https://github.com/kjkellyphys/muBHNL. v2: Updated references, typo in equation fixed (results unchanged), matches published version
BmE auf dem Germanistentag: Die Plot-Zeit im mittelalterlichen Erzählen und ihre Auflösung
Creators: name: Hausmann, Albrecht
Publisher: name: Beiträge zur mediävistischen Erzählforschung
Year: 2019

description: Beiträge zur mediävistischen Erzählforschung, Bd. 2 (2019)
การพัฒนาบทเรียนคอมพิวเตอร์ช่วยสอนเรื่องการออกแบบโฮมเพจสำหรับชั้นมัธยมศึกษาปีที่ 2
Creators: name: ชนม์ขนิษฐ์ วิศิษฎ์สมบัติ
Publisher: name: มหาวิทยาลัยราชภัฏวไลยอลงกรณ์ ในพระบรมราชูปถัมภ์
Year: 2558
Subjects: บทเรียนคอมพิวเตอร์ช่วยสอน,การออกแบบโฮมเพจ,ชั้นมัธยมศึกษาปีที่ 2

description: 1, 3, วารสารอิเล็กทรอนิกส์การเรียนรู้ทางไกลเชิงนวัตกรรม
Το προσφυγικό ζήτημα σε περίοδο οικονομικής κρίσης: στάσεις του Ελληνικού Τύπου απέναντι στις ευρωπαϊκές εξελίξεις
Creators: name: Κακακιού, Ελεάννα Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Προσφυγικό
Πρόσφυγας
Κριτική Ανάλυση Λόγου
Refugee Issue
Refugee
Critical Discourse Analysis

description: Η παρούσα έρευνα πραγματεύεται το προσφυγικό ζήτημα, όπως αυτό παρουσιάζεται στα ΜΜΕ, και συγκεκριμένα στις ελληνικές, διαδικτυακές εφημερίδες. Επειδή πρόκειται για ένα θέμα που έχει απασχολήσει και εξακολουθεί να απασχολεί τόσο την Ελλάδα, όσο και και τις υπόλοιπες χώρες της Ευρωπαϊκής Ένωσης, με ιδιαίτερη μάλιστα ένταση τον τελευταίο καιρό λόγω των εξελίξεων στη Μέση Ανατολή, θα γίνει προσπάθεια διάκρισης και ταξινόμησης των διαφόρων υφιστάμενων στάσεων του ελληνικού τύπου έναντι των εξελίξεων γενικότερα και των προσφύγωνειδικότερα.Με σκοπό την ορθή μελέτη και διαχείριση του τιθέντος ζητήματος ως μέθοδος επιλέγεται η κριτική ανάλυση λόγου, που συνδυάζει τα οφέλη της γλωσσολογικής και της κοινωνιολογικής προσέγγισης, επιτρέποντας την εξέταση των γλωσσικών επιλογών μέσα από ένα κοινωνιολογικό πρίσμα, με στόχο την ανάδειξη των σχέσεων μεταξύ τύπου, ιδεολογίας και κοινωνίας εν μέσω οικονομικής κρίσης. Η σύνθεση ενός σώματος κειμένωνείναι αυτή που παρέχει επαρκή δεδομένα, ώστε να εντοπιστεί τελικά αφενός η γενικότερη στάση των εφημερίδων, που κρίνεται ως αρκετά απόμακρη, αφετέρου τυχόν αποκλίσεις σε επί μέρους, γλωσσικές και μη, επιλογές που, όπως βλέπουμε, οφείλονται και δικαιολο-γούνται συνήθως από το ετερόκλητο ιδεολογικό υπόβαθρο των εφημερίδων.
description: The main theme of the research is the refugee issue, as it is presented in the mass media and specifically in the Greek online newspapers. Since it is a matter that constantly concerns both Greece and every country belonging to the European Union, especially now due to the circumstances in the Middle East, the aim of the research is to find and classify the existing attitudes of the Greek Press towards the European developments in general and towards the refugees in particular. In order to do so, critical discourse analysis is selected as the basic method, since it combines the benefits of both the linguistic and sociological aspect, providing the study of linguistic features under the light of the existing social status, while designating the affiliations between press, ideology and society during the financial crisis. Thesynthesisofacorpusiswhatprovidesus withenoughdatatodetect ontheonehandtheoverallattitudeofthenewspapers towards refugees, whichonecancharacterize eventually as distant; on the other hand the concrete, smaller differences between the same newspapers that can usually be justified because of their promiscuous ideological background.
Quantum interference of surface states in bismuth nanowires probed by the Aharonov-Bohm oscillatory behavior of the magnetoresistance
Creators: name: Nikolaeva, A.
name: Gitsu, D.
name: Konopko, L.
name: Graf, M. J.
name: Huber, T. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the observation of a dependence of the low temperature resistance of individual single-crystal bismuth nanowires on the Aharonov-Bohm phase of the magnetic flux threading the wire. 55 and 75-nm wires were investigated in magnetic fields of up to 14 T. For 55 nm nanowires, longitudinal magnetoresistance periods of 0.8 and 1.6 T that were observed at magnetic fields over 4 T are assigned to h/2e to h/e magnetic flux modulation. The same modes of oscillation were observed in 75-nm wires. The observed effects are consistent with models of the Bi surface where surface states give rise to a significant population of charge carriers of high effective mass that form a highly conducting tube around the nanowire. In the 55-nm nanowires, the Fermi energy of the surface band is estimated to be 15 meV. An interpretation of the magnetoresistance oscillations in terms of a subband structure in the surface states band due to quantum interference in the tube is presented.
description: 30 pages, 9 figures