cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Presentation of Self in 'Online' Life: A Content Analysis of Instagram Profiles
Creators: name: Doherty, Tiffany
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Information Science
subject: Mass Communications
subject: Education--Social Sciences
subject: Education--Sociology of
subject: Anthropology--Cultural
subject: Gender Studies
subject: Sociology--Theory and Methods
subject: WomenÕs Studies
subject: Psychology--Social
subject: Instagram
subject: Self-presentation
subject: Goffman
subject: Gender
subject: Photography

description: This study explores the initial self-presentation of ordinary male and female Instagram user profiles. A content analysis was used to analyze the first nine images from 50 publicly accessible, personal profiles. Gender differences were found in photos of human subjects, in terms of body positioning and facial expressions, and in photos of objects that ultimately reflect traditional gender norms and stereotypes. Furthermore, findings suggest users present an ‘Instagram-self’: one that is uniquely individual yet conforms to an Instagram culture that is entirely founded on banal images. Contributions to the fields of online social networking sites and photography are discussed. Limitations and areas for future research are discussed.
Late Antique Floor Mosaics in Constantinople and Western Asia Minor
Creators: name: Niewöhner, Philipp
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2023

description: This paper presents novel observations on various late antique floor mosaics in Constantinople and western Asia Minor, both secular and ecclesiastical. In doing so, the paper observes that church floors in Constantinople and western Asia Minor are generally poor in, and often altogether void of, figural representations. This aniconic trait contrasts with secular floors in the same region and with church floors further to the east, in eastern Anatolia and the Levant, many of which are centered on figural scenes or form figure carpets. Thus, the aniconism in question appears to have been particular to churches in Constantinople and the diocese of Asia or the patriarchate of Constantinople. It mirrors similarly aniconic wall mosaics in church apses and was also observed by synagogues in this region, but not in the Levant. Sophisticated layouts and a systematic ornamentation in accordance with the function and meaning of the various church spaces – sanctuaries, naves, aisles, narthices, etc. – show that the aniconism in question was part of an intricate decorational scheme and probably the reflection of a particular religious identity.
description: Jahrbuch des Deutschen Archäologischen Instituts, 137, 2022
Exceptional Point Dynamics in Photonic Honeycomb Lattices with PT Symmetry
Creators: name: Ramezani, Hamidreza
name: Kottos, Tsampikos
name: Kovanis, Vassilios
name: Christodoulides, Demetrios N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the flow of electromagnetic waves in complex honeycomb photonic lattices with local PT symmetries. Such PT structure is introduced via a judicious arrangement of gain or loss across the honeycomb lattice, characterized by a gain/loss parameter γ. We found a new class of conical diffraction phenomena where the formed cone is brighter and travels along the lattice with a transverse speed proportional to Sqrt (γ).
description: 7 pages, 5 figures
TEMIR YO'L YUKLARINI TARIF BILAN TARTIBGA SOLISH TAJRIBASI VA UNI QO'LLASH IMKONIYATLARINI TAHLIL QILISH
Creators: name: Allamurotova, Munira
Publisher: name: Zenodo
Year: 2023

description: Maqolada temir yo'l yuklarini tariflarni tartibga solish tajribasi tahlil qilingan. Turli yondashuvlarning asosiy xavflari aniqlandi. Tarif tizimini yanada takomillashtirish yo'llari taklif qilindi.
Boron Nitride Nanotubes as Templates for Half-Metal Nanowires
Creators: name: Batista, Ronaldo J. C.
name: de Oliveira, Alan B.
name: Pereira, Natália R.
name: Paolini, Rafael S.
name: Manhabosco, Taíse M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate by means of DFT/GGA+U calculations the electronic and structural properties of magnetic nanotubes composed of an iron oxide monolayer and (n,0) Boron Nitride (BN) nanotubes, with n ranging from 6 up to 14. The formation energy per FeO molecule of FeO covered tubes is smaller than the formation energy of small FeO nanoparticles which suggest that the FeO molecules may cover the BN nanotubes rather than to aggregate to form the FeO bulk. We propose a continuous model for the FeO covered BN nanotubes formation energy which predicts that BN tubes with diameter of roughly 13 Åare the most stable. Unlike carbon nanotubes, the band structure of FeO covered BN nanotubes can not be obtained by slicing the band structure of a FeO layer, the curvature and the interaction with the BN tube is determinant for the electronic behavior of FeO covered tubes. As a result the tubes are semiconductors, intrinsic half-metals or semi-half-metals that can become half-metals charged with either electrons and holes. Such a result may be important in the spintronics context.
description: 6 pages, 6 figures
Enhancing the robustness of ESPI measurements using digital image correlation
Creators: name: Bingleman, Luke
Publisher: name: University of British Columbia
Year: 2010

description: Electronic Speckle Pattern Interferometry (ESPI) provides a sensitive technique for measuring surface deformations. The technique involves comparison of the speckle phase angles within surface images measured before and after material deformation. This phase angle comparison requires that the speckle positions be consistent in all images. A lateral shift between images by just one pixel substantially degrades ESPI measurements, while a shift of two or more pixels typically causes complete speckle decorrelation and compromises the measurement entirely. To prevent such lateral motions, the specimen and the optical system must be rigidly fixed. This requirement typically prevents use of the ESPI method in applications outside laboratories or where it is necessary to remove the specimen from the optical setup between ESPI measurements. Here, Digital Image Correlation (DIC) is used to track speckle motion caused by specimen displacement between ESPI measurements. The measured images can then be mathematically shifted to restore the original speckle locations, thereby recorrelating the ESPI measurements. Examples are presented where ESPI measurements are successfully made with specimen shifts in excess of 60 pixels. A novel ESPI measurement technique where the specimen is removed in between ESPI measurements is also developed and validated.
Johann Friedrich Cotta’s ›Paper Museum‹, an Introduction. The Formation of the Collection, Its Publication and the Vases It Illustrates
Creators: name: Fulton, Lesley Vivienne
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2023

description: While employed as co-director of the Academy of Painting in Naples from 1789–1799, the neoclassical artist J. H. W. Tischbein was involved in the assembly of engravings for the publication of Sir William Hamilton’s second collection of Greek vases. A collection of 142 vase drawings relating to a fifth volume and now held in the Cotta Archive, Marbach is the object of this study, my aims being to trace the history of their publication, to determine how they reflect Tischbein’s own practice as draughtsman and teacher and finally to identify the vases they illustrate. The drawings demonstrate Tischbein’s close involvement in his workshop with both his students and professional draughtsmen who were employed in the preparation of Etruscan vases and wall decorations as well as engravings made in his preferred technique of linear abstraction. Their publication was forestalled by Napoleonic troops invading Naples and, twenty years on, the costly folio edition of the antiquarian had been replaced by compendia of artefacts for which there was a growing demand by scholars in in the emerging field of archaeology. Today the drawings offer a unique source of information on vases which have long disappeared and add to the record of several vase painters and their associated workshops, one of which is discussed here.
description: Jahrbuch des Deutschen Archäologischen Instituts, 137, 2022
A Flexible Channel Coding Approach for Short-Length Codewords
Creators: name: Hernaez, Mikel
name: crespo, Pedro M.
name: Del Ser, Javier
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This letter introduces a novel channel coding design framework for short-length codewords that permits balancing the tradeoff between the bit error rate floor and waterfall region by modifying a single real-valued parameter. The proposed approach is based on combining convolutional coding with a $q$-ary linear combination and unequal energy allocation, the latter being controlled by the aforementioned parameter. EXIT charts are used to shed light on the convergence characteristics of the associated iterative decoder, which is described in terms of factor graphs. Simulation results show that the proposed scheme is able to adjust its end-to-end error rate performance efficiently and easily, on the contrary to previous approaches that require a full code redesign when the error rate requirements of the application change. Simulations also show that, at mid-range bit-error rates, there is a small performance penalty with respect to the previous approaches. However, the EXIT chart analysis and the simulation results suggest that for very low bit-error rates the proposed system will exhibit lower error floors than previous approaches.
description: 4 pages; submitted to IEEE Communications Letters
Do the Fluctuating Estrogen Levels during the Menstrual Cycle Influence Muscle Performance in Females?
Creators: name: Juhi, Ayesha
Publisher: name: Zenodo
Year: 2021
Subjects: Menstrual cycle
estrogen
muscle performance

description: This a review article to know whether fluctuating estrogen levels across the menstrual cycle influence the muscle performance in females. Hormonal fluctuations during the course of a women’s menstrual cycle, apart from reproductive system also affects the physiological and psychological component of the body, which has an influence on her day to day performance. The presence of estrogen receptors (ER) has been noted on skeletal muscle, ligaments, tendons and smooth muscle. Estrogen has been shown to have a significant influence on muscle membrane stability and there by possibly, minimizing the post exercise muscle damage and soreness.
Stocahastic process based regression modeling of time-to-event data : application to phenological data
Creators: name: Cai, Song
Publisher: name: University of British Columbia
Year: 2010

description: In agricultural study, the timings of phenological events, such as bud-bursting, blooming and fruiting, are considered to be mainly influenced by climate variables, especially accumulative daily average temperatures. We developed a stochastic process-based regression model to study the complicated relationship between phenological events and climate variables, and to predict the future phenological events. Compared with the traditional Cox model, the newly developed model is more efficient by using all available time-dependent covariate information, and is suitable for making predictions. Compared with parametric proportional hazards model, this model is less restrictive on assumptions, and fitting of this model to data is computationally straightforward. Also, this model may be easily extended to incorporate sequential events as responses. It may also be useful for a broad range of survival data in medical study. This model was applied to the bloom-date data of six high-valued, woody perennial crops in the Okanagan Valley, BC Canada. Simulation results showed that the model provides a sensible way to estimate an important parameter, Tbase, controlling phenological forcing events. Also, our statistical findings support Scientists' previous experimental findings that the temperature influence blooming events via accumulation of growing degree days (GDDs). Furthermore, a cross-validation procedure showed that this model can provide accurate predictions for future blooming events.
An Assessment of "What does photon energy tell us about cellphone safety" by Dr. William Bruno
Creators: name: Leikind, Bernard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Dr. William Bruno asserts the well-known fact that cell phones radiate microwaves in the classical regime. This, he says, means that the photon energy is not relevant to assessing safety. Citing optical tweezers as an example of biologically relevant non-thermal effects of electromagnetic radiation, Bruno concludes that all other reports of non-thermal effects from microwaves are likely valid. He seeks safety thresholds based upon requiring that cell phone energy density be less than kBT. This proposal and related ideas produce thresholds many orders of magnitude below present values. While Dr. Bruno is correct that cell phone microwave radiation is generally in the classical regime, he uses peculiar estimates (number of photons per cubic wavelength) that overstate the circumstance by more than 20 factors of ten. He misunderstands the operation of optical tweezers and ignores their significant thermal effects. He credulously accepts poorly supported claims of non-thermal effects. He mistakenly believes that kBT is the average thermal energy (per cubic wavelength or per cell) in materials. It is not. It is twice the average energy per molecule per degree of freedom in the material. The thermal energy density is (1/2)kBT X (average number of degrees of freedom of the molecules) X (Avogadro's number). (Avogadro's number is 6 X 1026 molecules/mole.) Thus, Bruno's proposed safety thresholds are more than 1025 too low. Using the correct value for the average thermal energy would place the thresholds close to today's standards. Throughout his analysis he neglects the index of refraction of living tissue, n \cong 9, or the absorption length, α \cong 1 cm-1, in the microwave region.
description: 11 pages, 1 table, 1 figure. See "What does photon energy tell us about cellphone safety?", April 24, 2011. (arXiv:1104.5008v1 [q-bio.OT]). And 4. Leikind, Bernard. "Do Cell Phones Cause Cancer?", Skeptic Vol. 15, No. 4, 2010, p.30. Leikind, Bernard. "Do Cell Phones Cause Cancer?", eSkeptic, June 9, 2010, arXiv:1007:4192
Die Silberbecher von Hoby
Creators: name: Emme, Burkhard
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2023

description: Die beiden silbernen Skyphoi von Hoby wurden im Jahr 1920 im Grab eines germanischen ›Fürsten‹ auf der dänischen Insel Lolland gefunden. Bereits unmittelbar nach der Auffindung wurde das Becherpaar als Geschenk eines römischen Befehlshabers an seinen germanischen Verhandlungspartner gedeutet. Vor diesem Hintergrund erkannte die Forschung in der Reliefdarstellung des Achill-Bechers eine mythologische Allegorie für den Herrschaftsanspruch Roms gegenüber seinen barbarischen Nachbarn. Der vorliegende Beitrag zielt darauf ab, diese Deutung kritisch zu hinterfragen. Ausgehend von jüngeren Forschungsergebnissen zu Funktion und Diskursivierung von reliefiertem Trinkgeschirr wird argumentiert, dass die mythologischen Szenen beider Becher ursprünglich dazu bestimmt waren, im Kontext des römischen convivium zu einem Diskurs über die Rollen von Gast und Gastgeber anzuregen. Erst vor diesem Hintergrund wird auch die anschließende Verwendung des Becherpaares als diplomatisches Geschenk an ein Mitglied der germanischen Eliten verständlich, wobei das Zusammentreffen von Priamos und Achill als mythologisches exemplum für einen erfolgreich herbeigeführten Interessensausgleich dienen konnte.
description: Jahrbuch des Deutschen Archäologischen Instituts, 137, 2022
Fermi surface topology and low-lying electronic structure of a new iron-based superconductor Ca10(Pt3As8)(Fe2As2)5
Creators: name: Neupane, M.
name: Liu, Chang
name: Xu, S. -Y.
name: Wang, Y. J.
name: Ni, N.
name: Allred, J. M.
name: Wray, L. A.
name: Lin, H.
name: Markiewicz, R. S.
name: Bansil, A.
name: Cava, R. J.
name: Hasan, M. Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a first study of low energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca10(Pt3As8)(Fe2As2)5 (the 10-3-8 phase, with Tc = 8K), via angle-resolved photoemission spectroscopy (ARPES). Despite its triclinic crystal structure, ARPES results reveal a fourfold symmetric band structure with the absence of Dirac-cone-like Fermi dots (related to magnetism) found around the Brillouin zone corners in other iron-based superconductors. Considering that the triclinic lattice and structural supercell arising from the Pt3As8 intermediary layers, these results indicate that those layers couple only weakly to the FeAs layers in this new superconductor, which has implications for the determination of its potentially novel pairing mechanism.
description: 5 pages, 4 figures
Towards an Intelligent Tutor for Mathematical Proofs
Creators: name: Autexier, Serge
name: Dietrich, Dominik
name: Schiller, Marvin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Logic in Computer Science (cs.LO)
subject: Mathematical Software (cs.MS)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences
subject: K.3.0;I.2.3

description: Computer-supported learning is an increasingly important form of study since it allows for independent learning and individualized instruction. In this paper, we discuss a novel approach to developing an intelligent tutoring system for teaching textbook-style mathematical proofs. We characterize the particularities of the domain and discuss common ITS design models. Our approach is motivated by phenomena found in a corpus of tutorial dialogs that were collected in a Wizard-of-Oz experiment. We show how an intelligent tutor for textbook-style mathematical proofs can be built on top of an adapted assertion-level proof assistant by reusing representations and proof search strategies originally developed for automated and interactive theorem proving. The resulting prototype was successfully evaluated on a corpus of tutorial dialogs and yields good results.
description: In Proceedings THedu'11, arXiv:1202.4535
A Sufficient Condition for Power Flow Insolvability with Applications to Voltage Stability Margins
Creators: name: Molzahn, Daniel K.
name: Lesieutre, Bernard C.
name: DeMarco, Christopher L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: For the nonlinear power flow problem specified with standard PQ, PV, and slack bus equality constraints, we present a sufficient condition under which the specified set of nonlinear algebraic equations has no solution. This sufficient condition is constructed in a framework of an associated feasible, convex optimization problem. The objective employed in this optimization problem yields a measure of distance (in a parameter set) to the power flow solution boundary. In practical terms, this distance is closely related to quantities that previous authors have proposed as voltage stability margins. A typical margin is expressed in terms of the parameters of system loading (injected powers); here we additionally introduce a new margin in terms of the parameters of regulated bus voltages.
description: 12 pages, 7 figures
Breaking of four-fold lattice symmetry in a model for pnictide superconductors
Creators: name: Daghofer, Maria
name: Fischer, André
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the interplay of onsite Coulomb repulsion and various mechanisms breaking the fourfold lattice symmetry in a three-band model for the iron planes of iron-based superconductors. Using cluster-perturbation theory allows us to locally break the symmetry between the x- and y-directions without imposing long-range magnetic order. Previously investigated anisotropic magnetic couplings are compared to an orbital-ordering field and anisotropic hoppings. We find that all three mechanisms for a broken rotational symmetry lead to similar signatures once onsite interactions are strong enough to bring the system close to a spin-density wave. The band distortions near the Fermi level are independent of differences between the total densities found in xz and yz orbitals.
Deutsche Archäologen und Archäologie am Ende des Zweiten Weltkriegs und in der Nachkriegszeit
Creators: name: Borbein, Adolf H.
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2023

description: Bald nach dem Ende des II. Weltkrieges versuchten vier Professoren der Klassischen Archäologie an deutschen Universitäten, den Kontakt zu einer in die USA emigrierten Kollegin und langjährigen Freundin wiederherzustellen. Friedrich Matz(Marburg), Hans Möbius (Würzburg), Ernst Langlotz (Bonn) und Bernhard Schweitzer (Leipzig) schrieben deshalb an Elisabeth Jastrow (1890–1981), die ihre Heimat Deutschland verlassen hatte, als die Rassegesetze der Nazis sie wegen ihrer Herkunft aus einer jüdischen Familie zwangen, ihre Universitätskarriere abzubrechen. In insgesamt neuen Briefen, die hier aus dem Nachlass E. Jastrow im Getty Research Institute in Los Angeles zusammen mit einem von Jastrow selbst verfassten Lebenslauf in voller Länge und kommentiert vorgelegt werden, berichten die Verfasser über ihr persönliches Ergehen und die Schicksale ihrer Institute während des Krieges und in der Nachkriegszeit zwischen 1945 und 1948. Anders als von den deutschen Freunden erhofft, beantwortete Jastrow die Briefe nicht. Sie schickte Lebensmittelpakete, die dankbar angenommen wurden. Erst Jahre später war Jastrow zu persönlichen Kontakten wieder bereit. Briefe und Kommentare geben Einblick in die Probleme deutscher Wissenschaftler in der Nachkriegszeit: Wiederaufbau der Institutionen, Suche nach internationalen Kontakten, Umgang mit der Nazi-Vergangenheit, Stellung zu Emigranten, die Frage nach eigener Schuld.
description: Jahrbuch des Deutschen Archäologischen Instituts, 137, 2022
Hellenistisch-römische Wohnkultur in der ersten römischen Provinz – Häuser in Solunt im Spiegel ihrer dauerhaften Ausstattung
Creators: name: Lang, Jörn
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2023

description: Seit der Identifizierung der Siedlung auf dem heutigen Monte Catalfano mit dem antiken Solunt im 16. Jahrhundert konzentrierte sich das Forschungsinteresse vor allem auf zwei Aspekte: zum einen die Beziehungen zwischen dem Kern der punischen Siedlung am Kap Solanto und der städtischen Struktur am Hang des Monte Catalfano sowie zum anderen die Wohngebäude und öffentlichen Bereiche dieser im 4. Jahrhundert v. Chr. neu gegründeten Siedlung unter baugeschichtlichen Gesichtspunkten. Demgegenüber werden in diesem Beitrag erstmals die Einrichtungselemente aus dauerhaftem Material als Teil der Wohnkultur betrachtet. Auf dieser Basis lassen sich Fragen nach Repräsentationsansprüchen diskutieren und charakteristische Elemente der Wohnkultur im hellenistisch-römischen Soluntum identifizieren. Insgesamt wird erkennbar, dass die Ausstattung privater Wohnräume auch zur Zeit der Aufgabe der Siedlung noch im Wesentlichen von Elementen aus der spätrepublikanischen Zeit geprägt war. Diese Ausstattungselemente sind formal in das bekannte Spektrum des hellenistischen Mittelmeerraumes einzuordnen. Sofern eine nähere zeitliche Bestimmung möglich ist, lässt sich für das Gros der Objekte eine Entstehung zwischen dem 3. und 1. Jahrhundert v. Chr. wahrscheinlich machen. Nach der späten Republik scheint es keine signifikanten Veränderungen mehr gegeben zu haben. Einflüsse eines punischen Erbes sind für diese Form der Ausstattungselemente grundsätzlich nicht zu erkennen.
description: Jahrbuch des Deutschen Archäologischen Instituts, 137, 2022
Boundary information inflow enhances correlation in flocking
Creators: name: Cavagna, Andrea
name: Giardina, Irene
name: Ginelli, Francesco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The most conspicuous trait of collective animal behaviour is the emergence of highly ordered structures. Less obvious to the eye, but perhaps more profound a signature of self-organization, is the presence of long-range spatial correlations. Experimental data on starling flocks in 3d show that the exponent ruling the decay of the velocity correlation function, C(r) ~ 1/r^γ, is extremely small, γ<< 1. This result can neither be explained by equilibrium field theory, nor by off-equilibrium theories and simulations of active systems. Here, by means of numerical simulations and theoretical calculations, we show that a dynamical field applied to the boundary of a set of Heisemberg spins on a 3d lattice, gives rise to a vanishing exponent γ, as in starling flocks. The effect of the dynamical field is to create an information inflow from border to bulk that triggers long range spin wave modes, thus giving rise to an anomalously long-ranged correlation. The biological origin of this phenomenon can be either exogenous - information produced by environmental perturbations is transferred from boundary to bulk of the flock - or endogenous - the flock keeps itself in a constant state of dynamical excitation that is beneficial to correlation and collective response.
Du sollst dir ein Bildnis machen: Ehrungen für Götter (und Menschen) im epigraphisch-archäologischen Befund
Creators: name: Ehmig, Ulrike
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: Im vorliegenden Beitrag werden erstmals alle lateinischen Sakralinschriften, denen zufolge die Darstellung einer übergeordneten Macht gestiftet wurde, zusammengestellt und vergleichend analysiert. Einschlägig sind knapp 1700 epigraphische Zeugnisse, die die Begriffe statua, imago, signum, sigillum, simulacrum, effigies und typus enthalten. Sie werden nach quantitativen wie qualitativen Gesichtspunkten erörtert. Hierzu zählen ihre Anzahl, ihre Verbreitung, die Stifter und die adressierten Gottheiten sowie die Verwendung der Termini im Zusammenhang mit Ehren- oder auch Grabmonumenten für Personen und divinisierte Herrscher. Die aus den Inschriften gewonnenen Ergebnisse werden entsprechenden Beobachtungen gegenübergestellt, die in der Vergangenheit anhand literarischer Quellen formuliert wurden. Für die Frage, welcher Bezug zwischen dem jeweils verwendeten Begriff und dem betreffenden archäologischen Artefakt besteht, lassen sich erste Perspektiven entwickeln. Deutlich wird vor allem aber ein Desiderat: Während die Texte lateinischer Inschriften mittlerweile umfassend über Datenbanken bequem abrufbar und in den Editionen erschließbar sind, fehlen bis dato entsprechende Zusammenstellungen selbst minimaler Angaben zu ihrer Materialität noch in großem Maße.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
Nanomaterials Science & Engineering, Volume 2, Number 4, December 2020
Creators: name: Bdikin, Igor
name: Marques, Paula Alexandrina De Aguiar Pereira
name: Fagg, Duncan Paul
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: Nanomaterials Science & Engineering, Vol 2 No 4 (2020): Nanomaterials Science & Engineering
New Observations on the Imperial Reliefs from the Sebasteion at Aphrodisias and the Portraiture of Claudius, Britannicus, and the Young Nero
Creators: name: Pollini, John
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: This article reconsiders the identification of several imperial personages and personifications from the Julio-Claudian Sebasteion at Aphrodisias. Certain of these reliefs also offer insight into the likely reason for the creation of one of Claudius’ portrait types that influenced the hairstyles of his natural son Britannicus and his adopted son Nero. Reevaluated too are portraits in-the-round that have long been attributed to the young Nero but which I show represent instead Britannicus. Even though the epigraphic record proves that many portraits of Britannicus were set up, there has been no agreement about the identification of any of his images. My new observations establish his portrait type, based on numismatic evidence and especially on two little-known sculptural portraits representing him as a child wearing the corona civica. The establishment of Britannicus’ portraiture and revision of the portrait type of the young Nero also lead to new conclusions about the Sebasteion’s problematic ›Two Princes‹ relief.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
Carbon fibber reinforced polymer use in space launch vehicle propellant tanks - concept and finite element method study
Creators: name: Fernandes, Miguel
name: Brojo, Francisco
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: Weight reduction is a never-ending goal in aerospace engineering, especially for a space launch vehicle (SLV), were every gram of mass has a penalty in the vehicle's performance. Since propellant tanks generally weigh more than half of the dry mass of a SLV, it is particularly advantageous to implement composite materials in their construction. Yet, difficulties with oxygen compatibility, permeability and manufacturing maturity dictate that aluminium alloys with high lithium content are still the state of the art in this field. Recent developments in the aerospace composites industry are starting to change this perception, especially regarding Carbon Fibber Reinforced Polymer (CFRP) application. Hence this study, which aims to propose an integral CFRP propellant tank concept and determine mass savings by comparing it to a metallic baseline, through finite element method (FEM) analysis with simulated flight loads. Tank dimensions, geometry and loads were chosen for micro-satellite SLV application. Also, Altair's Optistruct solver was used for FEM calculations, with Altair's HyperWorks for pre and post-processing. A mass reduction of close to 35% has been obtained with comparison to the metallic baseline design for the same boundary conditions. Therefore, a sound and competitive design for a micro-satellite SLV propellant tank has been successfully achieved.
description: Nanomaterials Science & Engineering, Vol 2 No 4 (2020): Nanomaterials Science & Engineering
Crystal structure and magnetic properties of Bi1-xSmxFeO3 ceramics across the phase boundary: effect of high pressure
Creators: name: Latushka, S.
name: Zhaludkevich, D. V.
name: Zhaludkevich, A. L.
name: Pakalniskis, A.
name: Chobot, A. N.
name: Silibin, M. V.
name: Chobot, G. M.
name: Latushka, T. V.
name: Skaudzius, R.
name: Kareiva, A.
name: Karpinsky, D. V.
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: The solid solutions Bi1-xSmxFeO3 with chemical composition across the morphotropic phase boundary region specific for rhombohedral - orthorhombic structural transition were investigated by X-ray diffraction, electron microscopy and magnetometry. Structural measurements showed a concentration driven transition from the single phase rhombohedral structure to the single phase nonpolar orthorhombic structure through the formation of antipolar orthorhombic phase which coexists with the rhombohedral phase in the compounds with x
description: Nanomaterials Science & Engineering, Vol 2 No 4 (2020): Nanomaterials Science & Engineering
Reiterstandbilder im Heraion von Samos
Creators: name: Freyer-Schauenburg, Brigitte
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: In dem Aufsatz werden drei samische Skulpturenfragmente vorgestellt, die sich mit einiger Wahrscheinlichkeit auf ein überlebensgroßes Reiterstandbild im Heraion beziehen lassen. Es war überarbeitet: Ursprünglich stellte es einen Griechen dar, in der Zweitfassung einen Römer. Im Anschluss werden weitere Fußfragmente, deren calcei gleichermaßen einer Überarbeitung verdankt werden, sowie Fragmente einer römischen Togastatue mit calcei behandelt. Für diese wäre eine naturwissenschaftliche Bestimmung des Marmors besonders wichtig. Ferner werden zwei Basisfundamente im Heraion in Hinblick auf ihre mögliche Bestimmung als Postamente für Reiterstandbilder besprochen; die Deckplatte einer weiteren Basis trug in Zweitverwendung einen Reiter mit einem Pferd in der Levade.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
Hybrid microwave sintering of alumina ceramics which contain waste alumina
Creators: name: Vuksic, Milan
name: Ljubek, Mihaela
name: Zmak, Irena
name: Curkovic, Lidija
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: The use of microwave energy to sinter ceramic materials offers benefits compared to conventional sintering methods. Some of benefits regarding to less time consumption, achieving high heating rates, and saving energy. The hybrid microwave sintering because of its advantageous is a method of wide interest for improving the microstructure of sintered materials. In this study, the goal was to investigate the influence of the hybrid microwave sintering because on the properties of alumina ceramics, which contain a considerable amount of waste alumina powder. The study was limited to hybrid microwave sintering of alumina green bodies in which the grain growth and densification were characterized. The waste alumina powder, which is generated during machining of alumina green compacts and high-purity (99.9 %) alumina powder, were used as starting materials. The Alumina green bodies were obtained by the slip casting process. The dried green samples were then sintered by using a hybrid microwave furnace. The used hybrid microwave sintering atmospheric furnace consists of a 2.45 GHz microwave generator with a continuously adjustable power output from 0 to 3 kW and external heating elements. The sintered samples with addition of waste alumina powder were exhibited higher density values, slightly larger grain size, and linear shrinkage in comparison with the samples made of pure alumina powder. The observed microstructure for both samples was uniform with the average grain sizes smaller than 2 microns as a consequence of a hybrid microwave sintering.
description: Nanomaterials Science & Engineering, Vol 2 No 4 (2020): Nanomaterials Science & Engineering
verurteilte Philosoph, die Satyrn und das Hässliche: Das frühe Sokrates-Porträt im Kontext
Creators: name: Catoni, Maria Luisa
name: Giuliani, Luca
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: Geraume Zeit nach der Hinrichtung des Sokrates, aber lange vor dessen Rehabilitierung, beschloss eine Gruppe von Freunden, Sokrates in der Akademie eine Bildnisstatue zu weihen: Doch in welcher Form sollte er dargestellt werden – er, den die Polis nach einem ordentlichen Gerichtsverfahren als Verbrecher hatte hinrichten lassen? Schließlich fassten die Auftraggeber der Statue eine einigermaßen verblüffende Entscheidung: Sie ließen den verehrten Lehrer in Gestalt eines Satyrn darstellen. Die satyreske Physiognomie führte in verdichteter Form das intellektuelle und ethische Erbe des Sokrates vor Augen – ein Erbe, zu dem nicht zuletzt auch seine Verurteilung und sein Tod gehörten. Dieser Bildprägung ist ein unerhörter Erfolg beschieden gewesen. Sie hat alle späteren Versuche, Sokrates ins Bild zu setzen, in ihre eigene Bahn gezwungen. Schon Lysipp, bei dem die Polis nach der Rehabilitierung des Sokrates eine neue Bildnisstatue in Auftrag gab, scheint keine andere Möglichkeit mehr gesehen zu haben als die, den satyrhaften Typus beizubehalten. Der Erfolg dieser konstruierten Physiognomie ist so groß gewesen, dass ihr künstlicher Charakter darüber in Vergessenheit geriet: Was die Kunst geschaffen hatte, wurde der Natur zugeschrieben. Spätere Generationen haben nicht mehr daran gezweifelt, dass der lebendige Sokrates tatsächlich einem Satyrn ähnlich gesehen habe. Das gilt für bildende Kunst und Literatur, aber es gilt auch für die Altertumswissenschaft. Als Musterbeispiel dafür untersuchen wir den Beitrag von Bernhard Schweitzer, der das Sokrates-Porträt als das früheste überlieferte physiognomische Bildnis und als epochalen Wendepunkt in der Geschichte der griechischen Bildniskunst interpretiert hat.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
Improved performance of Silicon solar cells by ZnMgO front laye
Creators: name: Bahfir, Amel
name: Boumaour, Messaoud
name: Chaieb, Zoubir
name: Labeche, Hadjira
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: Silicon solar cells play a dominant role in the photovoltaic market. However, their manufacturing process is quite expensive and involves complex processes. Therefore, new materials are intensively explored for the aim of potentially higher efficiency and lower cost solar cells. ZnMgO alloy is a very promising transparent conductive oxide layer and which acts as front layer as well as an anti-reflective coating in silicon solar cells reducing costs and complexity of process. Numerical simulation using the SCAPS-1D software enables to find the optimized parameters of p-Si/ZnMgO hetero-junction in comparison with the structure comprising ZnO front layer. Even with the effect of stress caused by the high lattice mismatch at the ZnMgO/Si interface, our calculations show a conversion efficiency of 16.57%.The introduction of a thin layer of hydrogenated amorphous silicon improves the cell output performance to 17.14%.
description: Nanomaterials Science & Engineering, Vol 2 No 4 (2020): Nanomaterials Science & Engineering
A model of a Fermi liquid using gauge-gravity duality
Creators: name: Sachdev, Subir
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use gauge-gravity duality to model the crossover from a conformal critical point to a confining Fermi liquid, driven by a change in fermion density. The short-distance conformal physics is represented by an anti-de Sitter geometry, which terminates into a confining state along the emergent spatial direction. The Luttinger relation, relating the area enclosed by the Fermi surfaces to the fermion density, is shown to follow from Gauss's Law for the bulk electric field. We argue that all low energy modes are consistent with Landau's Fermi liquid theory. An explicit solution is obtained for the Fermi liquid for the case of hard-wall boundary conditions in the infrared.
description: 14 pages, 3 figures; (v2) added clarifications
Mushroom-Rimmed Amphora as an Indicator of Hekatomnid Regional Hegemony
Creators: name: Dündar, Erkan
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: The excavations on the Tepecik settlement at Patara furnish important new evidence for the mushroom-rimmed amphorae in the 4th c. B.C. This evidence is based primarily on the ceramics recovered from a back-filled burnt soil layer in a deposit located on the Tepecik settlement. These finds include eight amphorae and two unguentaria. One of these amphorae is Lycian, and seven others belong to the mushroom-rimmed amphora type. Our analysis indicates that the mushroom-rimmed amphora reflects production and distribution of commodities generated under the aegis of the Hecatomnid dynasty in Karia and the mushroom rim could have been used as a geographical marker, a ›brand‹ by the Hekatomnids during the 4th c. B.C.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
Between Apollo and Osiris
Creators: name: Villing, Alexandra
Publisher: name: Jahrbuch des Deutschen Archäologischen Instituts
Year: 2022

description: Relatively few Greek fine ware vessels have been uncovered in Egyptian contexts of the late 7th and 6th centuries B.C., the majority of East Greek production. Remarkably, though, the shape and imagery of a good number of them seem to reference local Egyptian customs and ideas, notably Osirian religion and regional sacred geographies, either representing them directly, or translating them into a Greek idiom. The vessels were probably commissioned by Greeks in Egypt from craftsmen in their homelands to be offered as bespoke containers to Egyptian sanctuaries and/or (religious) dignitaries. Their origins and distribution indicate two main networks of contact and exchange: one linking North Ionian Teos and Klazomenai with Thebes in the Nile valley, the other Rhodes with Daphnai and Memphis in the Nile Delta. Together with other evidence they suggest that Greeks from a wide social spectrum were acquiring a high level of intimacy with Egyptian culture. Ritual practice in particular emerges as a vital arena for Greek-Egyptian interaction and as a main conduit for elements of Egyptian culture to enter the wider Greek sphere.
description: Jahrbuch des Deutschen Archäologischen Instituts, 136, 2021
medieval town of Handoga (Djibouti)
Creators: name: De Torres Rodríguez, Jorge
name: Ruibal González, Alfredo
name: Franco Fernández, Manuel Antonio
name: Martínez Barrio, Candela
name: Gutiérrez De León Juberías, Pablo
name: Cornax Gómez, Carolina
name: Minguito Palomares, Álvaro
name: Abdi, Soumeya
name: Osman Ali, Ibrahim
Publisher: name: Journal of Global Archaeology
Year: 2023

description: The article presents the results of the first campaign carried out at the medieval site of Handoga (Djibouti) by the StateHorn project, based at the Institute of Heritage Sciences of the Spanish National Research Council. The aim of the campaign was to assess the site's potential in order to launch a long-term project focusing on the study of the town's urbanism and way of life. The campaign included a systematic survey of the site and the excavation of four test pits, which revealed evidence for two archaeological phases at Handoga. The results of the campaign suggest that Handoga was an important urban centre on the medieval routes linking the Gulf of Tadjoura with the interior of Africa, of which very little is known.
description: Journal of Global Archaeology, 2023
Congenital urinary tract obstruction : linking form and function.
Creators: name: Trnka, Peter
Publisher: name: University of British Columbia
Year: 2010

description: Renal dysplasia associated with congenital urinary tract obstruction remains the major cause of end-stage renal disease in young children. The outcomes of the most severely affected boys with posterior urethral valves have not changed since the introduction of fetal intervention over twenty years ago. Poor outcomes likely reflect our limited understanding of the pathophysiology of congenital obstructive nephropathy. The first part of this thesis summarizes the challenges of diagnosis and management of this condition that are based on the assessment of fetal tubular function rather than on tests reflecting the degree of dysplastic changes. The importance of the new biomarker development based on proteomic techniques is also presented. One of the processes leading to renal dysplasia, epithelial-mesenchymal transition (EMT), is presented for the first time in human fetal kidneys in the initial study of this thesis. Characteristic changes of EMT in the collecting duct epithelium consist of the decreased expression of epithelial proteins, increased expression of mesenchymal proteins, disruption of the basement membrane, and deposition of extracellular matrix into the surrounding interstitium. Molecular and cellular signaling events of the phenotypic epithelial transition are presented in the subsequent study in which a modulatory role of Y-box binding protein-1 (YB-1) on EMT is described. Inactivation of YB-1 leads to attenuation of EMT, a fact that might have therapeutic implications and deserves further exploration. Cellular signaling pathways of EMT are also described in this study. The final project of this thesis describes clinical utility of the identified candidate proteins as urinary biomarkers of congenital obstructive nephropathy in patients with posterior urethral valves (PUV). The differential expression of proteins involved in EMT, renal fibrosis, and sensing of urine flow in patients with PUV and controls is presented, as well as their correlation to the degree of renal impairment. The results presented in this thesis contribute to our understanding of the pathophysiology of congenital obstructive nephropathy, and identify key proteins involved in this process that could be measured in urine and used as biomarkers of this devastating disease.
Evaluating deformation-based parametrization of ocean mesoscale eddies using eddy geometry approach
Creators: name: Platonov, Danil
name: Waterman, Stephanie
Publisher: name: Zenodo
Year: 2020

description: A new generation of ocean general circulation models will have resolution small enough to partially resolve ocean mesoscale eddies, which are present throughout the ocean and are an important driving force for ocean jets. Unfortunately, eddies which have sizes similar to the grid scale model resolution can behave unrealistically, and thus need to be parametrized to account for effects of unresolved smaller-scale eddies. This research analyzes one particular parametrization that is suited for such applications.
Development of an ASIC for Dual Mirror Telescopes of the Cherenkov Telescope Array
Creators: name: Vandenbroucke, Justin
name: Bechtol, Keith
name: Funk, Stefan
name: Okumura, Akira
name: Tajima, Hiro
name: Varner, Gary
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have developed an application-specific integrated circui (ASIC) for photomultipler tube (PMT) waveform digitization which is well-suited for the Schwarzschild-Couder optical system under development for the Cherenkov Telescope Array (CTA) project. The key feature of the "TARGET" ASIC is the ability to read 16 channels in parallel at a sampling speed of 1 GSa/s or faster. In combination with a focal plane instrumented with 64-channel multi-anode PMTs (MAPMTs), TARGET digitizers will enable CTA to achieve a wider field of view than the current Cherenkov telescopes and significantly reduce the cost per channel of the camera and readout electronics. We have also developed a prototype camera module, consisting of 4 TARGET ASICs and a 64-channel MAPMT. We report results from performance testing of the camera module and of the TARGET ASIC itself.
description: 4 pages, 6 figures, proceedings of the 32nd International Cosmic Ray Conference, Beijing, China (2011)
Teleporting the one-qubit state via two-level atoms with spontaneous emission
Creators: name: Hu, Ming-Liang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum teleportation via two two-level atoms coupled collectively to a multimode vacuum field and prepared initially in different atomic states. We concentrated on influence of the spontaneous emission, collective damping and dipole-dipole interaction of the atoms on fidelity dynamics of quantum teleportation and obtained the region of spatial distance between the two atoms over which the state can be teleported nonclassically. Moreover, we showed through concrete examples that entanglement of the channel state is the prerequisite but not the only essential quantity for predicting the teleportation fidelity.
description: 14 pages, 6 figures