cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Direct microscopic evidence of shear induced graphitization of ultrananocrystalline diamond films
Creators: name: Ganesan, K.
name: Rani, Revati
name: Mathews, Tom
name: Dhara, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The origin of ultralow friction and high wear resistance in ultrananocrystalline diamond (UNCD) films is still under active debate because of the perplexed tribochemistry at the sliding interface. Herein, we report a comparative study on surface topography and nanoscale friction of tribofilms, in wear tracks of two sets of UNCD films having different structural characteristics. Despite both the films display ultralow coefficient of friction, the UNCD films grown under Ar atmosphere (UNCDAr) exhibit a high wear resistance while the wear rate is higher for the films grown in N2 (UNCDN). Frictional force microscopic (FFM) investigations clearly reveal the manifestation of shear induced graphitization on both the films. However, the wear track of UNCDAr films have a large network of a few layer graphene (FLG) structures over the amorphous carbon tribofilms while only isolated clusters of FLG structures are present in the wear track of UNCDN films. Here, we demonstrate the direct micro-/nanoscopic evidence for the formation of large network of ~ 0.8 - 6 nm thick FLG structures, as a consequence of shear induced graphitization and discuss their decisive role in ultralow friction and wear.
description: 33 pages, 8 figures, 1 Table
Entanglement oscillations in non-Markovian quantum channels
Creators: name: Maniscalco, Sabrina
name: Olivares, Stefano
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the non-Markovian dynamics of a two-mode bosonic system interacting with two uncorrelated thermal bosonic reservoirs. We present the solution to the exact microscopic Master equation in terms of the quantum characteristic function and study in details the dynamics of entanglement for bipartite Gaussian states. In particular, we analyze the effects of short-time system-reservoir correlations on the separability thresholds and show that the relevant parameter is the reservoir spectral density. If the frequencies of the involved modes are within the reservoir spectral density entanglement persists for a longer time than in a Markovian channel. On the other hand, when the reservoir spectrum is out of resonance short-time correlations lead to a faster decoherence and to the appearance of entanglement oscillations.
description: 5 pages, 2 figures, published version
Looking at dirty pictures : sur(sous)realism, fascism, and reproducing intoxication in the 1930’s
Creators: name: Lunn, Maureen F.
Publisher: name: University of British Columbia
Year: 2008

description: During the inter-war years in Europe a rebellion against what was perceived of as an overly rationalized society dedicated to material gain developed on both the far Right and far Left. The road to freedom against the 'mechanized' imperative of a bourgeois democracy was seen to lie through the release of an irrational drive that would rupture the seemingly impermeable screen of a rapidly developing technological world. The period was permeated with a neo-romantic impulse that suffused and engulfed the ragged edges of a broad and static center with religious ideals mingled with symbolic expressions of intoxication and sexuality embedded in a new concept of the body itself. As a student of art history, my goal in this thesis has been to set Surrealism's aesthetic production of revolutionary convulsion (embodied in the concept of 'Convulsive Beauty') against the much broader background of its historical period in which the reproduction of intoxicating desire by the German fascists was revolutionizing the political face of Europe. In order to demonstrate how instrumental the medias were to the presentation in culture at large of revolutionary intoxication I have turned to contemporary figures like Walter Benjamin and Siegfried Kracauer who analyzed fascism's successes within the field of intoxication through its mechanical reproduction, as well as to Ernst Bloch's analysis of the fascist's colonization of a tradition of intoxication historically associated with the Left. The first chapter is devoted to presenting the various players within this revolutionary expression of rupture, and ends with the introduction of various analytic tools with which aesthetic representations of intoxication through the body can be critically approached. The second chapter is concerned with bringing out the depth of differences within the Surrealist movement itself, and with how these differences situated themselves within the traditional French Left's political representations, while the third chapter turns to the study of the various elements of the neo-romantic impulse itself, and to how these elements were driven on all sides by a masculine concept of virility, seen as crucial to the developing historical moment in which war was imminent. The thesis is concluded in the final section of the third chapter, which posits renegade Surrealist Georges Bataille's theory of "convulsive communication" against what is argued as Surrealism's and fascism's addiction to intoxication as a utopian ideal ultimately depending upon the annihilation of the 'beautiful' body as the bearer of the convulsive message.
The Influence of Electro-Mechanical Effects on Resonant Electron Tunneling Through Small Carbon Nano-Peapods
Creators: name: Krive, I. V.
name: Ferone, R.
name: Shekhter, R. I.
name: Jonson, M.
name: Utko, P.
name: Nygård, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of a fullerene molecule trapped inside a single-wall carbon nanotube on resonant electron transport at low temperatures and strong polaronic coupling is theoretically discussed. Strong peak to peak fluctuations and anomalous temperature behavior of conductance amplitudes are predicted and investigated. The influence of the chiral properties of carbon nanotubes on transport is also studied.
description: 17 pages, 3 figures. Replaced with published version. Important changes. Open access: http://stacks.iop.org/1367-2630/10/043043
The formation of planetary systems with SPICA
Creators: name: Kamp, I.
name: Honda, M.
name: Nomura, H.
name: Audard, M.
name: Fedele, D.
name: Waters, L. B. F. M.
name: Aikawa, Y.
name: Banzatti, A.
name: Bowey, J. E.
name: Bradford, M.
name: Dominik, C.
name: Furuya, K.
name: Habart, E.
name: Ishihara, D.
name: Johnstone, D.
name: Kennedy, G.
name: Kim, M.
name: Kral, Q.
name: Lai, S. P.
name: Larsson, B.
name: McClure, M.
name: Miotello, A.
name: Momose, M.
name: Nakagawa, T.
name: Naylor, D.
name: Nisini, B.
name: Notsu, S.
name: Onaka, T.
name: Pantin, E.
name: Podio, L.
name: Marichalar, P. Riviere
name: Rocha, W. R. M.
name: Roelfsema, P.
name: Santos, F.
name: Shimonishi, T.
name: Tang, Y. W.
name: Takami, M.
name: Tazaki, R.
name: Wolf, S.
name: Wyatt, M.
name: Ysard, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this era of spatially resolved observations of planet forming disks with ALMA and large ground-based telescopes such as the VLT, Keck and Subaru, we still lack statistically relevant information on the quantity and composition of the material that is building the planets, such as the total disk gas mass, the ice content of dust, and the state of water in planetesimals. SPICA is an infrared space mission concept developed jointly by JAXA and ESA to address these questions. The key unique capabilities of SPICA that enable this research are (1) the wide spectral coverage 10-220 micron, (2) the high line detection sensitivity of (1-2) 10-19 W m-2 with R~2000-5000 in the far-IR (SAFARI) and 10-20 W m-2 with R~29000 in the mid-IR (SMI, spectrally resolving line profiles), (3) the high far-IR continuum sensitivity of 0.45 mJy (SAFARI), and (4) the observing efficiency for point source surveys. This paper details how mid- to far-IR infrared spectra will be unique in measuring the gas masses and water/ice content of disks and how these quantities evolve during the planet forming period. These observations will clarify the crucial transition when disks exhaust their primordial gas and further planet formation requires secondary gas produced from planetesimals. The high spectral resolution mid-IR is also unique for determining the location of the snowline dividing the rocky and icy mass reservoirs within the disk and how the divide evolves during the build-up of planetary systems. Infrared spectroscopy (mid- to far-IR) of key solid state bands is crucial for assessing whether extensive radial mixing, which is part of our Solar System history, is a general process occurring in most planetary systems and whether extrasolar planetesimals are similar to our Solar System comets/asteroids. ... (abbreviated)
description: accepted for publication in PASA
Electrostatic Potentials in Supernova Remnant Shocks
Creators: name: Baring, Matthew G.
name: Summerlin, Errol J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent advances in the understanding of the properties of supernova remnant shocks have been precipitated by the Chandra and XMM X-ray Observatories, and the HESS Atmospheric Cerenkov Telescope in the TeV band. A critical problem for this field is the understanding of the relative degree of dissipative heating/energization of electrons and ions in the shock layer. This impacts the interpretation of X-ray observations, and moreover influences the efficiency of injection into the acceleration process, which in turn feeds back into the thermal shock layer energetics and dynamics. This paper outlines the first stages of our exploration of the role of charge separation potentials in non-relativistic electron-ion shocks where the inertial gyro-scales are widely disparate, using results from a Monte Carlo simulation. Charge density spatial profiles were obtained in the linear regime, sampling the inertial scales for both ions and electrons, for different magnetic field obliquities. These were readily integrated to acquire electric field profiles in the absence of self-consistent, spatial readjustments between the electrons and the ions. It was found that while diffusion plays little role in modulating the linear field structure in highly oblique and perpendicular shocks, in quasi-parallel shocks, where charge separations induced by gyrations are small, and shock-layer electric fields are predominantly generated on diffusive scales.
description: 7 pages, 2 embedded figures, Accepted for publication in Astrophysics and Space Science, as part of the HEDLA 2006 conference proceedings
Προστασία της Πολιτιστικής Κληρονομιάς και Πολεμικές Συρράξεις: Διεθνή Κείμενα. Το Παράδειγμα Της Συρίας: Αποκατάσταση - Ανάδειξη: Κριτική και Προτάσεις
Creators: name: Αργυροπούλου, Δήμητρα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Πολιτιστική Κληρονομιά σε κίνδυνο
Ένοπλες συρράξεις
Τα μνημεία της Συρίας
Cultural Heritage in danger
Armed conflict
The monuments of Syria

description: Η παρούσα εργασία πραγματεύεται το θέμα της εφαρμογής των διεθνών κειμένων που συντάχθηκαν για την προστασία της πολιτιστικής κληρονομιάς σε περιπτώσεις ενόπλων συρράξεων και των ζητημάτων που προκύπτουν κατά την αποκατάσταση και ανάδειξη των κατεστραμμένων, κατά τον πόλεμο, μνημείων. Το τελευταίο εξετάζεται στο πολύ πρόσφατο παράδειγμα της Συρίας. Η εργασία διαρθρώνεται σε δύο κυρίως κεφάλαια. Αντικείμενο του πρώτου κεφαλαίου είναι η παρουσίαση των κυριότερων κειμένων προς αυτή την κατεύθυνση και η εξέταση της εφαρμογής τους σε ορισμένα παραδείγματα ενόπλων συρράξεων των προηγούμενων δεκαετιών. Στο δεύτερο κεφάλαιο εξετάζεται το παράδειγμα της Συρίας. Γίνεται μια σύντομη επισκόπηση της εμπόλεμης κατάστασης, των μνημείων που καταστράφηκαν αλλά και των ζητημάτων που προκύπτουν κατά την αποκατάσταση και ανάδειξη των πληγέντων από τον πόλεμο μνημείων και των πολιτικών διαχείρισης της τραυματικής μνήμης. Ακόμη παρουσιάζονται ορισμένες ιδέες από την γράφουσα αναφορικά με πιθανούς τρόπους διαχείρισης και προώθησης των πληροφοριών που σχετίζονται με την καταστροφή των μνημείων στην περίπτωση της Συρίας.
description: This paper addresses the issue of the application of international texts drafted for the protection of cultural heritage in cases of armed conflict and the issues that arise during the restoration and enhancement of monuments destroyed during war. The latter is examined in the very recent example of Syria. The paper is divided in two main parts. The subject of the first chapter is the presentation of the main international law in this direction and the examination of its application in some examples of armed conflicts of the previous decades. The second chapter examines the example of Syria. It contains a brief overview of the war situation, of the monuments that were destroyed and the issues that arise during the restoration, enhancement and promotion of monuments destroyed during the war. Also it exposes some traumatic memory management policies. Finally a few ideas are also presented by the author regarding possible ways of managing and promoting information related to the destruction of monuments in the case of Syria.
Ἐκκλησία καί ἐν Χριστῷ ζωή κατά τόν ἅγιο Νεκτάριο
Creators: name: Αναστασιάδου, Χρυσαυγή Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εκκλησία
Μυστήρια
Σωτηρία
Church
Sacraments
Salvation

description: Στην εργασία παρουσιάζεται η θεολογική σκέψη του αγίου Νεκταρίου, Μητροπολίτου Πενταπόλεως, σχετικά μέ το θέμα της Εκκλησίας καί της εν Χριστώ ζωής. Γίνεται αναφορά στην αρχή καί τήν ιστορική φανέρωση της Εκκλησίας σύμφωνα μέ τήν Πατερική θεολογία, όπου το περιεχόμενο της διδασκαλίας για την Εκκλησία συνδέεται άρρηκτα με τη Χριστολογία καί όλες τις άλλες πτυχές πού συναπαρτίζουν το περιεχόμενο της ορθόδοξης πίστης. Επίσης, γίνεται αναφορά στην Εκκλησία ως χαρισματικό Σώμα Χριστού που αποτελείται από μέλη, τα οποία έχουν προικισθεί με ποικίλα χαρίσματα του Αγίου Πνεύματος και παρουσιάζονται τα κυριότερα χαρακτηριστικά και η ιεραρχική δομή της Εκκλησίας. Ένα άλλο θέμα που αναπτύσσεται είναι η εν Χριστώ ζωή, η οποία είναι αλληλένδετη μέ τη διδασκαλία περί Εκκλησίας καί βιώνεται εμπειρικά στα ιερά μυστήρια της Εκκλησίας. Η συμμετοχή στα μυστήρια συνδέεται με την άσκηση και τον πνευματικό αγώνα και όλα αυτά αποτελούν εκφάνσεις της ζωής της Εκκλησίας, με τα οποία δίνεται στον κάθε άνθρωπο η δυνατότητα σωτηρίας και θέωσης.
description: In this study the theological thought of Saint Nectarios, Metropolitan of Pentapolis is presented, related to the issues of Church and life in Christ. A reference in the beginning and the historical revelation of Church is made according to the Fathers theology, where the content of the teaching about the Church is inextricably related to Christology and all the other aspects that make up the content of the Orthodox faith. Furthermore, Church is referred as a charismatic body of Christ which is constituted by members that have been endowed with various gifts of the Holy Spirit and the main characteristics and hierarchical structure of Church are presented. Another issue that is developed is life in Christ, which is intertwined with Church’s teaching and is empirically experienced in the holy sacraments of the Church. Participation in the holy sacraments is connected with the spiritual practice and all these are manifestations of the life of Church, which give every person the opportunity for salvation and deification.
SIS Epidemic Model: Birth-and-Death Markov Chain Approach
Creators: name: Nzokem, A. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: 60J28 (Primary), 60J27(Secondary)

description: We are interested in describing the infected size of the SIS Epidemic model using Birth-Death Markov process. The Susceptible-Infected-Susceptible (SIS) model is defined within a population of constant size $M$; the size is kept constant by replacing each death with a newborn healthy individual. The life span of each individual in the population is modelled by an exponential distribution with parameter $α$; and the disease spreads within the population is modelled by a Poisson process with a rate $λ_{I}$. $λ_{I}=βI(1-\frac{I}{M}) $ is similar to the instantaneous rate in the logistic population growth model. The analysis is focused on the disease outbreak, where the reproduction number $R=\fracβα $ is greater than one. As methodology, we use both numerical and analytical approaches. The analysis relies on the stationary distribution for Birth and Death Markov process. The numerical approach creates sample path simulations into order show the infected size dynamics, and the relationship between infected size and $R$. As $M$ becomes large, some stable statistical characteristics of the infected size distribution can be deduced. And the infected size is shown analytically to follow a normal distribution with mean $(1-\frac{1}{R}) M$ and Variance $\frac{M}{R} $.
description: 14 pages, 5 figures
Locus of control and native Indian children with histories of hearing loss
Creators: name: MacLeod, Douglas M.
Publisher: name: University of British Columbia
Year: 2008

description: Very little is known about the relationship between locus of control (LOC) orientation and mild or temporary hearing losses associated with chronic otitis media. Furthermore, it seems this relationship may never have been studied in the unique cultural context of Northern Canadian Native Indian societies. The present study investigated the relationship between LOC orientation and hearing status category among Carrier-Sekani children from Northern British Columbia. The relationship between LOC orientation, chronologic age, and academic achievement was also explored. Demographic data collected for a larger study, provided an opportunity to conduct some post hoc analyses on LOC orientation, place in the family, number of parents in the home and family income. Ninety Carrier-Sekani students from grades four to twelve, received a modified Nowicki-Strickland Locus of Control Scale for Children. Students were divided into two broad categories, normally hearing and those having a history of a hearing loss. The latter category was further divided into students with a pure tone loss, students with a history of chronic otitis media and those with observed otitis media at the time of testing. Students could be members of more than one sub-group. Correlation coefficients and Analyses of Variance were computed to explore the relationship between LOC orientation and the independent variables. No significant relationship was discovered between LOC orientation and category of hearing loss. An internal LOC orientation was positively associated with chronologic age, medium family income, two parents in the home and partially associated with academic achievement. This study indicates that for Carrier-Sekani students, a mild or temporary hearing loss is not significantly associated with an external LOC orientation. It seems that school related variables and demographic variables commonly associated with LOC orientation in the samples described in the literature are also present in the sample studied in this project.
Topologically Linked Crystals
Creators: name: Matsuura, Toru
name: Yamanaka, Masanori
name: Hatakenaka, Noriyuki
name: Matsuyama, Toyoki
name: Tanda, Satoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discovered a new class of topological crystals, namely linked rings of crystals. Two rings of tantalum triselenide (TaSe3) single crystals were linked to each other while crystal growing. The topology of the crystal form is called a "Hopf link", which is the simplest link involving just two component unknots linked together exactly once. The feature of the crystals is not covered by the conventional crystallography.
description: 6 pages, 3 figures, to appear in J. Crystal Growth
The influence of size, depth and histologic characteristics of invasive ductal breast carcinoma on thermographic properties of the breast
Creators: name: Mance, Marko
name: Bulić, Krešimir
name: Antabak, Anko
name: Milošević, Milan
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2019
Subjects: invasive ductal breast carcinoma
thermography
breast cancer
estrogen receptor
progesterone receptor

description: Invasive breast carcinoma is the most common oncologic disease worldwide. The existing diagnostic methods use morphologic changes in the breast to diagnose a carcinoma when it has reached a certain size. Therefore, it is important to augment the morphologic diagnostic examinations with a new method that focuses on characteristics other than morphology such as electromagnetic changes produced by cancer. 50 adult female patients with confirmed ductal carcinoma following a core biopsy due to a suspicious breast mass were included in the study. They underwent breast thermography using a specially designed infrared camera. The data collected was statistically analyzed to determine how the presence of a tumor and its histologic characteristics influence breast thermographic properties. Twenty eight [56 %] patients in the study had an abnormal thermogram. Following statistical analysis, it was found that temperature of the diseased breast was directly correlated to tumor volume [p=0.009] and negatively correlated to depth of tumor [p=0.042]. Tumors that were ER+ and PR+ tumors produced warmer temperatures [p=0.017 and p=0.038 respectively] than tumors without these receptors. HER2 status and Ki-67 index had no statistical correlation with breast temperature. Tumor size, distance from the skin surface and receptor status cause changes in breast thermographic properties. Despite technical advances in the field of thermography, there are still contradictory results associated with thermography. Its diagnostic abilities are generally poorer than conventional methods and its use in breast cancer screening or as an adjunctive tool for diagnostic purposes is not recommended.
description: EXCLI Journal; 18:Doc549; ISSN 1611-2156
Degenerate dispersive equations arising in the study of magma dynamics
Creators: name: Simpson, Gideon
name: Spiegelman, Marc
name: Weinstein, Michael I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: An outstanding problem in Earth science is understanding the method of transport of magma in the Earth's mantle. Models for this process, transport in a viscously deformable porous media, give rise to scalar degenerate, dispersive, nonlinear wave equations. We establish a general local well-posedness for a physical class of data (roughly $H^1$) via fixed point methods. The strategy requires positive lower bounds on the solution. This is extended to global existence for a subset of possible nonlinearities by making use of certain conservation laws associated with the equations. Furthermore, we construct a Lyapunov energy functional, which is locally convex about the uniform state, and prove (global in time) nonlinear dynamic stability of the uniform state for any choice of nonlinearity. We compare the dynamics to that of other problems and discuss open questions concerning a larger range of nonlinearities, for which we conjecture global existence.
description: 27 Pages, 7 figures are not present in this version. See http://www.columbia.edu/~grs2103/ for a PDF with figures. Submitted to Nonlinearity
A methodology for theory uncertainties in the SMEFT
Creators: name: Trott, Michael
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: A process specific methodology is defined to systematically assign theoretical uncertainties in the Standard Model Effective Field Theory when performing leading order global fits. The method outlined also minimises the computational and theoretical burden to systematically advance such analyses to dimension eight.
description: 7 pages
Value distribution of cyclotomic polynomial coefficients
Creators: name: Gallot, Yves
name: Moree, Pieter
name: Hommersom, Huib
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N37, 11B83

description: Let a_n(k) be the kth coefficient of the nth cyclotomic polynomial Phi_n(x). As n ranges over the integers, a_n(k) assumes only finitely many values. For any such value v we determine the density of integers n such that a_n(k)=v. Also we study the average of the a_n(k). We derive analogous results for the kth Taylor coefficient of 1/Phi_n(x) (taken around x=0), the kth coefficient of the nth reciprocal cyclotomic polynomial. We formulate various open problems.
description: 26 pages, 6 tables. Partly based on arXiv:math.NT/0307352, which is the M.Sc. thesis of H. Hommersom (2003), enriched with research results due to Moree. Some of these research results have been extracted and various new results added. A connection with reciprocal cyclotomic polynomials (arXiv:0709.1570) is also made
HAWC+/SOFIA Polarimetry in L1688: Relative Orientation of Magnetic Field and Elongated Cloud Structure
Creators: name: Lee, Dennis
name: Berthoud, Marc
name: Chen, Che-Yu
name: Cox, Erin G.
name: Davidson, Jacqueline A.
name: Encalada, Frankie J.
name: Fissel, Laura M.
name: Harrison, Rachel
name: Kwon, Woojin
name: Li, Di
name: Li, Zhi-Yun
name: Looney, Leslie W.
name: Novak, Giles
name: Sadavoy, Sarah
name: Santos, Fabio P.
name: Segura-Cox, Dominique
name: Stephens, Ian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the relative orientation between the magnetic field and elongated cloud structures for the $ρ$ Oph A and $ρ$ Oph E regions in L1688 in the Ophiuchus molecular cloud. Combining inferred magnetic field orientation from HAWC+ 154 $μ$m observations of polarized thermal emission with column density maps created using Herschel submillimeter observations, we find consistent perpendicular relative alignment at scales of $0.02$ pc ($33.6"$ at $d \approx 137$ pc) using the histogram of relative orientations (HRO) technique. This supports the conclusions of previous work using Planck polarimetry and extends the results to higher column densities. Combining this HAWC+ HRO analysis with a new Planck HRO analysis of L1688, the transition from parallel to perpendicular alignment in L1688 is observed to occur at a molecular hydrogen column density of approximately $10^{21.7}$ cm$^{-2}$. This value for the alignment transition column density agrees well with values found for nearby clouds via previous studies using only Planck observations. Using existing turbulent, magnetohydrodynamic simulations of molecular clouds formed by colliding flows as a model for L1688, we conclude that the molecular hydrogen volume density associated with this transition is approximately $\sim10^{4}$ cm$^{-3}$. We discuss the limitations of our analysis, including incomplete sampling of the dense regions in L1688 by HAWC+.
description: To be published in ApJ
Design and Calibration of an Optically Segmented Single Volume Scatter Camera for Neutron Imaging
Creators: name: Galindo-Tellez, A.
name: Keefe, K.
name: Adamek, E.
name: Brubaker, E.
name: Crow, B.
name: Dorrill, R.
name: Druetzler, A.
name: Felix, C. J.
name: Kaneshige, N.
name: Learned, J. G.
name: Manfredi, J. J.
name: Nishimura, K.
name: Souza, B. Pinto
name: Schoen, D.
name: Sweany, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Optically Segmented Single Volume Scatter Camera (OS-SVSC) aims to image neutron sources for non-proliferation applications using the kinematic reconstruction of elastic double-scatter events. Our prototype system consists of 64 EJ-204 organic plastic scintillator bars, each measuring 5 mm $\times$ 5 mm $\times$ 200 mm and individually wrapped in Teflon tape. The scintillator array is optically coupled to two silicon photomultiplier ArrayJ-60035 64P-PCB arrays, each comprised of 64 individual 6 $\times$ 6 mm J-Series sensors arranged in an 8 $\times$ 8 array. We detail our calibration efforts, beginning with calibrations for the electronics, based on the IRS3D application-specific integrated circuits, and their associated timing resolutions, ranging from 30 ps to 90 ps. With electronics calibrations applied, energy and position calibrations were performed for a set of edge bars using $^{22}$Na and $^{90}$Sr, respectively, reporting an average resolution of (12.07$\pm$0.03) mm for energy depositions between 900 keVee and 1000 keVee. We further demonstrate a position calibration method for the internal bars of the matrix using cosmic-ray muons as an alternative to emission sources that cannot easily access these bars, with an average measured resolution of (14.86$\pm$0.29) mm for depositions between 900 keVee and 1000 keVee. The coincident time resolution reported between pairs of bars measured up to 400 ps from muon acquisitions. Energy and position calibration values measured with muons are consistent with those obtained using particle emission sources.
description: 24 pages, 32 figures. Manuscript submitted to Jinst
Ειδικές Ανακριτικές Πράξεις σε υποθέσεις χρήσης και διακίνησης ναρκωτικών ουσιών (Η αποδεικτική αξιοποίησή τους και ο διάλογος μεταξύ Ελληνικής Νομολογίας και ΕΔΔΑ)
Creators: name: Ζούζουλα, Μαρία
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ειδικές Ανακριτικές Πράξεις
Ανακριτική Διείσδυση
Αποδεικτική Αξιοποίηση
Special Investigative Techniques
Investigative Intrusion
Evidential Use

description: Σε εισήγηση που πραγματοποιήθηκε στα πλαίσια επιστημονικής συζήτησης με θέμα ¨Τα Ελληνικά Δικαστήρια και η νομολογία του ΕΔΔΑ¨, ο Εισαγγελέας του Αρείου Πάγου Ιωάννης Τέντες, βεβαίωσε ότι «… ο βαθμός της αφομοιώσεως της ΕΣΔΑ και της νομολογίας του ΕΔΔΑ στον χώρο του ελληνικού ποινικού δικαίου και της νομολογίας των ελληνικών ποινικών δικαστηρίων είναι ικανοποιητικός». Με την παρούσα εργασία επιχειρείται μία καθολική ανάλυση του θεσμού των Ειδικών Ανακριτικών Πράξεων, και δη της Ανακριτικής Διείσδυσης στον εγκληματικό τομέα της χρήσης και διακίνησης ναρκωτικών ουσιών. Έχοντας, δε, υπόψιν την ανωτέρω φράση, ακολουθεί μία προσέγγιση του ιδίου θεσμού υπό το φως της νομολογίας του Δικαστηρίου του Στρασβούργου και των εγγυήσεων της ΕΣΔΑ, αποσκοπώντας, έτσι, στην ανάδειξη των αλυσιδωτών νομικών προεκτάσεων που συνεπάγεται εν γένει το καθεστώς των Ειδικών Ανακριτικών Πράξεων.
description: Within the framework of a legal discussion about “Greek Courts and ECHR’s jurisprudence”, Ioannis Tentes, Prosecutor of the Supreme Court, certified that “…Greek Criminal Law is being assimilated satisfactorily into ECHR”. With this dissertation, a global analysis is being attempted concerning the statute of the Special Investigative Techniques, and mainly the Interrogation Penetration in the remit of drug use and trafficking. Additionally, taking into account the above phrase, the same statute is being perused based on the ECHR’s jurisprudence and guarantees, in order to highlight the successive legal extensions, which are caused by the regime of the Special Investigative Techniques.
description: Σε συενργασία με: Πανεπιστήμιο Λευκωσίας (Κύπρος)
Η διερεύνηση της επίδρασης των δημιουργικών μεθόδων και πρακτικών στη βελτίωση της εκπαιδευτικής διαδικασίας
Creators: name: Γεωργιάδου, Αναστασία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Δημιουργικότητα
Εκπαιδευτική διαδικασία
Δημιουργικό περιβάλλον
Creativity
Creative environment
Educational process

description: Η παρούσα διπλωματική έρευνα πραγματεύεται την επίδραση που ασκούν οι δημιουργικές πρακτικές και μέθοδοι στην βελτίωση των παρεχομένων υπηρεσιών εκπαίδευσης. Σκοπός της εργασίας είναι να αναδείξει τη σημασία του δημιουργικού περιβάλλοντος στην εκπαιδευτική διαδικασία και τη μάθηση και να ερευνήσει τoν βαθμό αποδοχής των εκπαιδευτικών σχετικά με την υιοθέτηση καλών δημιουργικών πρακτικών και μεθόδων Αρχικά, προσεγγίστηκε σε θεωρητικό επίπεδο η επίδραση της δημιουργικότητας στην μάθηση και αναλύθηκαν προηγούμενες μελέτες πάνω στην σημασία που παρουσιάζει το δημιουργικό περιβάλλον στην εκπλήρωση των οργανωσιακών στόχων μιας εκπαιδευτικής μονάδας. Η ερευνητική προσέγγιση που ακολουθήθηκε για την υλοποίηση του εμπειρικού μέρους της έρευνας είναι η ποσοτική με την χρήση δομημένου ερωτηματολογίου ως εργαλείου συλλογής δεδομένων σε πληθυσμό έρευνας Ελλήνων εκπαιδευτικών της δημόσιας και ιδιωτικής πρωτοβάθμιας εκπαίδευσης. Το δείγμα της έρευνας αποτέλεσαν 116 εκπαιδευτικοί πρωτοβάθμιας εκπαίδευσης διαφόρων ειδικοτήτων.
description: This dissertation examines the impact that creative practices and methods have on improving the education services provided. The purpose of this paper is to highlight the importance of the creative environment in the educational process and to investigate the degree of acceptance of teachers regarding the adoption of good creative practices and methods. Initially, the effect of creativity on learning was approached at a theoretical level and then previous studies were analyzed on the importance of the creative environment in fulfilling the organizational goals of an educational unit. The research approach followed for the implementation of the empirical part of the research is quantitative with the use of a structured questionnaire as a data collection tool in a research population of Greek teachers of public and private primary education. The sample of the research consisted of 116 primary school teachers of various spatiality.
Demonstration of the spin-statistics connection in elementary quantum mechanics
Creators: name: Morgan, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A simple demonstration of the spin-statistics connection is presented. The effect of exchange and space inversion operators on two-particle states is reviewed. The connection follows directly from successive application of these operations to the two-particle wave function for identical particles in an s-state, evaluated at spatial coordinates $\pm x$, but at equal time, \emph{i.e.}, at spacelike interval.
description: Revised; minor corrigenda
Archaeoastronomical study of Christian churches in Fuerteventura
Creators: name: Muratore, Maria Florencia
name: Gangui, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present an archaeoastronomical study of the orientations of the colonial Christian churches on the island of Fuerteventura, in the Canary Islands, Spain, mostly built from the period of the Norman conquest in the 15th century to the 19th century. Our goal is to analyze the possible astronomical influence on the orientation of these churches. Preliminary results suggest that the vast majority of the island's religious constructions have their axes oriented within the solar range, between the extreme azimuths of the annual movement of the Sun as it crosses the local horizon. This differs from what was found on the islands of Lanzarote and La Gomera (also in the Canaries) previously studied.
description: Published version available at http://www.astronomiaargentina.org.ar/
Potential Magnetic Field around a Helical Flux-rope Current Structure in the Solar Corona
Creators: name: Petrie, G. J. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the potential magnetic field associated with a helical electric line current flow, idealizing the near-potential coronal field within which a highly localized twisted current structure is embedded. It is found that this field has a significant axial component off the helical magnetic axis where there is no current flow, such that the flux winds around the axis. The helical line current field, in including the effects of flux rope writhe, is therefore more topologically complex than straight line and ring current fields sometimes used in solar flux rope models. The axial flux in magnetic fields around confined current structures may be affected by the writhe of these current structures such that the field twists preferentially with the same handedness as the writhe. This property of fields around confined current structures with writhe may be relevant to classes of coronal magnetic flux rope, including structures observed to have sigmoidal forms in soft X-rays and prominence magnetic fields. For example, ``bald patches'' and the associated heating by Parker current sheet dissipation seem likely. Thus some measurements of flux rope magnetic helicities may derive from external, near-potential fields. The predicted hemispheric preference for positive and negative magnetic helicities is consistent with observational results for prominences and sigmoids and past theoretical results for flux rope internal fields.
description: To appear in ApJ May 2007
Investigation of a kalilo plasmid in Louisiana Neurospora tetrasperma
Creators: name: Kuehn, Monica M.
Publisher: name: University of British Columbia
Year: 2008

description: Senescence in Neurospora is caused by the insertion of a linear plasmid, kalilo, into the host mitochondrial genome. Kalilo-related senescence has been studied extensively in Hawaiian field-isolated strains of Neurospora intermedia. This work, however, investigated the presence of a kalilo-like plasmid, named kalilo', within Louisiana-isolated strains of Neurospora tetrasperma. Comparison of the physical characteristics of the kalilo andkalilo' plasmids revealed that the plasmids have identical restriction maps. In addition, digestion of the kalilo' plasmid with 5' and 3' exonucleases showed a 5' resistance to enzyme digestion and a 3' sensitivity to digestion. This suggested that kalilo' may have a protein bound to its 5' termini, as is the case with kalilo. Biological properties of the Louisiana plasmid were also examined. Investigation of inheritance patterns through crosses demonstrated a maternal inheritance, thereby suggesting that kalilo' was located within the mitochondria. Additionally, transmission of the plasmid by asexual culturing was relatively stable. In order to determine if the plasmid inserted into the host mitochondrial genome, DNA from the mitochondria was cut with the restriction endonuclease Pst I (an enzyme that does not cut the kalilo plasmid DNA). Unlike the Hawaiian kalilo, kalilo' did not appear to insert into the mitochondrial DNA. Finally, given that insertion did not occur, the relationship between kalilo' and senescence was investigated. Various cultures with and without kalilo' were sub cultured (serial vegetative transfers) and surveyed for senescence. Senescence failed to occur within the forty subcultures observed. While senescence did occur within growth tubes, the relationship between senescence and kalilo' are not tightly correlated. On consideration of these results, several questions arose. What was the evolutionary relationship between kalilo and kalilo'? If the kalilo' plasmid was identical or very similar to kalilo, why did integration not occur? What was the catalyst for senescence in N. tetrasperma? These matters have been addressed within the text, but definitive answers are still forthcoming.
Higher-Order Corrections in the 2HDM, N2HDM and NMSSM
Creators: name: Krause, Marcel
Publisher: name: Karlsruhe
Year: 2019
Subjects: Higher-Order Corrections
renormalization
Two-Higgs-Doublet Model
2HDM
Next-to-Minimal Two-Higgs-Doublet Model
N2HDM
Next-to-Minimal Supersymmetric Standard Model
NMSSM
gauge dependence
mixing angles
mass calculations

description: Bis zum heutigen Tag ist das Standardmodell der Teilchenphysik weithin als die grundlegendste Quantenfeldtheorie anerkannt welche mit den präzisen Messungen von Teilchenbeschleuniger-Experimenten vollständig kompatibel ist. Trotz dieses enormen Erfolgs vermag das Modell nicht alle verbleibenden offenen Fragen der Grundlagenphysik zu beantworten. Um dieses Manko zu überwinden werden Theorien jenseits des Standardmodells untersucht. In dieser Arbeit berechnen wir Korrekturen höherer Ordnung zu Observablen in den erweiterten Higgs-Sektoren dreier verschiedener Theorien jenseits des Standardmodells. Wir untersuchen das Zwei-Higgs-Dublett-Modell und das Nichtminiale Zwei-Higgs-Dublett-Modell als zwei Erweiterungen des Standardmodells hinsichtlich der Higgs-Potentiale der Theorien. In beiden Modellen führen wir die vollständige elektroschwache Renormierung aller unabhängigen Parameter der Theorien durch und präsentieren verschiedene Renormierungsschemata für die skalaren Mischungswinkel der erweiterten Higgs-Sektoren. Wir berechnen die vollständigen elektroschwachen ein-Schleifen-Korrekturen zu den partiellen Zerfallsbreiten der Zerfälle aller Higgs-Bosonen in beiden Theorien. Weiterhin stellen wir die zwei neu entwickelte Computerprogramme 2HDECAY und ewN2HDECAY vor, welche die numerische Auswertung der partiellen Zerfallsbreiten und Verzweigungsverhältnisse in beiden Modellen ermöglichen. Um die Relevanz der berechneten Korrekturen zu quantifizieren, nutzen wir die neu entwickelten Programme für numerische Analysen und schätzen die verbleibende theoretische Unsicherheit unserer Berechnungen ab. Die dritte in dieser Arbeit untersuchte Theorie ist das ladungs- und paritätsverletzende Nichtminimale Supersymmetrische Standardmodell. In unserer Arbeit berechnen wir die $\mathcal{O}(\alpha _t^2)$-zwei-Schleifen-Korrekturen zu den Massen der Higgs-Bosonen dieses Modells. Zu diesem Zweck führen wir die ein- und zwei-Schleifen-Renormierung der Theorie durch, wobei wir uns auf Beiträge zu den $\mathcal{O}(\alpha _t^2)$-Korrekturen beschränken. Die Ergebnisse unserer Rechnungen sind in einer neuen Version des Computerprogramms NMSSMCALC eingepflegt. Zur Demonstration der Relevanz der neu berechneten Korrekturen analysieren wir die Größe der $\mathcal{O}(\alpha _t^2)$-zwei-Schleifen-Beiträge numerisch.
Multicriteria logistics outsourcing using AHP
Creators: name: Μακρίδης, Δημήτριος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Διαδικασία αναλυτικής ιεραρχίας
Πολυκριτηριακή ανάλυση
Third party logistics
3PL
Logistics
Analytic Hierarchy Process
AHP
Multi-criteria analysis

description: The purpose of this work is to create a guide and instructional material on the selection and investigation for the criteria needed for the ideal third-party logistics service provider. Also, the theory that is being developed throughout this dissertation is finally applied to a case study. The present dissertation is based on the global literature as well as scientific journals both for the theorical part of the work and the analytical part of the case study. An interview took place at the premises of the company spotlighting in the case study, which offered us with precious data. Finally, this work offered valuable results about the usage of Analytic Hierarchy Process and how helpful it can be as a tool for a company that seeks to make a decision that is influenced by multiple factors and all these factors have to be taken into account for all possible contenders.
description: Σκοπός αυτής της εργασίας είναι η δημιουργία ενός οδηγού και εκπαιδευτικού υλικού για την επιλογή και διερεύνηση των κριτηρίων που απαιτούνται για την επιλογή του ιδανικού παρόχου υπηρεσιών logistics. Επίσης, η θεωρία που αναπτύσσεται σε όλη αυτή τη διατριβή εφαρμόζεται τελικά σε μια μελέτη περίπτωσης. Η παρούσα διατριβή βασίζεται στην διεθνή βιβλιογραφία καθώς και σε επιστημονικά περιοδικά τόσο για το θεωρητικό μέρος του έργου όσο και για το αναλυτικό μέρος της μελέτης περίπτωσης. Διεξήχθη συνέντευξη στις εγκαταστάσεις της εταιρίας που μελετάται στην μελέτη περίπτωσης, η οποία μας πρόσφερε πολύτιμα στοιχεία. Τέλος, η εργασία αυτή πρόσφερε πολύτιμα αποτελέσματα σχετικά με τη χρήση της Αναλυτικής Ιεραρχικής Διαδικασίας και πόσο χρήσιμη μπορεί να είναι ως εργαλείο για μια εταιρεία που επιδιώκει να πάρει μια απόφαση, η οποία επηρεάζεται από πολλαπλούς παράγοντες και όλοι αυτοί οι παράγοντες πρέπει να ληφθούν υπόψη για όλους τους πιθανούς υποψηφίους.
Hyperbolic times: frequency versus integrability
Creators: name: Alves, Jose F
name: Araujo, Vitor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A05, 37C40

description: We consider dynamical systems on compact manifolds, which are local diffeomorphisms outside an exceptional set (a compact submanifold). We are interested in analyzing the relation between the integrability (with respect to Lebesgue measure) of the first hyperbolic time map and the existence of positive frequency of hyperbolic times. We show that some (strong) integrability of the first hyperbolic time map implies the existence of a positive Lebesgue measure subset of points with positive frequency of hyperbolic times. We also present an example of a map with positive frequency of hyperbolic times at Lebesgue almost every point but whose first hyperbolic time map is not integrable with respect to the Lebesgue measure.
description: 18 pages, 1 figure
AdS non-linear curvature-squared and curvature-quartic multidimensional (D=8) gravitational models with stabilized extra dimensions
Creators: name: Saidov, Tamerlan
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate $D$-dimensional gravitational model with curvature-quadratic and curvature-quartic correction terms: $R+R^2+R^4$. It is assumed that the corresponding higher dimensional spacetime manifold undergos a spontaneous compactification to a manifold with warped product structure. Special attention is paid to the stability of the extra-dimensional factor space for a model with critical dimension D=8. It is shown that for certain parameter regions the model allows for a freezing stabilization of this space. The effective four-dimensional cosmological constant is negative and the external four-dimensional spacetime is asymptotically AdS.
description: 12 pages, 2 figures