cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Η Κριτική θεωρία στη Γεωγραφία: Βιβλιογραφική επισκόπηση των ρευμάτων σκέψης που μετέτρεψαν τη Γεωγραφία:
Creators: name: Μπούτουρα, Αικατερίνη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Γεωγραφία
Κριτική
Ριζοσπαστική
Μαρξισμός
Μεταμοντερνισμός
Φεμινισμός
Geography
Critical
Radical
Postmodernism
Feminism

description: Η εργασία αυτή εξετάζει, μέσω της συλλογής, επιλογής, μετάφρασης και σύνθεσης υφιστάμενης βιβλιογραφίας, την πορεία της επιστήμης της Γεωγραφίας μέσα από τις επιρροές που δέχθηκε από τα τέλη της δεκαετίας του ’60 και μετά. Οι δεσπόζουσες θεωρίες των μετέπειτα χρόνων (όπως και οι μη δεσπόζουσες, συνήθως ονομαζόμενες «διιστάμενες» ή «σχισματικές») εξέλιξαν και μετα-μόρφωσαν τη σκέψη και το έργο των γεωγράφων μέσα από μια δυναμική πορεία. Η πορεία αυτή από την κλασσική Γεωγραφία μέχρι και σήμερα, μέσα από το πρίσμα της συσχέτισης της επιστήμης με την κοινωνία, αποτελεί ένα από τα βασικά αντικείμενα επιστημονικού διαλόγου μεταξύ πολλών γεωγράφων και στοχαστών του χώρου τις τελευταίες δεκαετίες στο Δυτικό κόσμο (και κυρίως στην αγγλοαμερικανική βιβλιογραφία, η οποία είναι και η πιο πλούσια). Το πώς και σε ποια επίπεδα μπορεί η Γεωγραφία να είναι «συσχετιζόμενη» με τα αντικείμενα στα οποία αναφέρεται, έχει αποτελέσει κομβικό πεδίο αντιπαράθεσης για όλες αυτές τις γεωγραφίες που ονομάζονται «κριτικές», και ως ένα βαθμό χαρακτηρίζει τον τρόπο με τον οποίο μεταλλάσσεται η γεωγραφική σκέψη μέσα από κάθε θεωρία. Η πορεία της Γεωγραφίας από τον Μαρξισμό μέχρι σήμερα και το ζήτημα της αναφοράς της στην κοινωνία είναι τα σημεία που η εργασία αυτή έχει ως σκοπό να φωτίσει, θέτοντας έτσι τις βάσεις για την απάντηση του ερωτήματος της προβολής της επιστήμης της Γεωγραφίας στο μέλλον.
description: This essay examines the course of Geography, as discipline, through the many changes and influences all human sciences were subject to after the late sixties. It is a survey based on the relevant bibliography, which was assumed, refined, translated -where needed- and re-composed. The dominant theories (as well as the non-dominant, often called “dissident” approaches) evolved and finally transformed the geographers’ thought and work through a dynamic process. This process -from what is called classical Geography until today- studied through the prism of relevance, is one of the basic foci of academic debate among geographers and thinkers of space during the last decades, especially in the Western world (mainly in Anglo-American bibliography, which is abundant on the subject). The means and levels through which Geography can be “relevant” to the object at hand is a significant field of debate for all geographies that are characterized as “critical”, and in some aspect defines the way geographical thought evolves passing through each theory. The course of Geography, from Marxism to today’s theories, and the subject of relevance are the main areas this essay attempts to illuminate, setting, thus, the basis for answers to the critical question of the future of Geography.
The remarkable light and colour variability of Small Magellanic Cloud Be stars
Creators: name: de Wit, W. J.
name: Lamers, H. J. G. L. M.
name: Marquette, J. B.
name: Beaulieu, J. P.
name: ;
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Some 240 blue stars in the Small Magellanic Cloud are investigated on their fantastic irregular continuum variability. We report here two results regarding these stars. First, their optical flux excess is correlated to their near-IR flux excess, as determined from optical EROSII light curves and 2MASS measurements. Second, the relation between optical colour and magnitude is observed to be bi-valued in 40% of the cases, resulting in a "loop" when the light curve is presented in a colour-magnitude diagram. We argue that optical variability for a large fraction of the variable stars is due to variations in the amount of bound-free and free-free radiation. We do simple model calculations that allow us to interpret the observed colour-magnitude variability as due to an outflowing ionized circumstellar disk. The mass loss of the central star is variable, i.e. on or off. Once the star stops losing mass, the disk evolves naturally into a ring. The observed bi-valued colour-magnitude relation is the transition of a partially optically thick to a fully optically thin disk. Significantly, the loop is traversed clockwise by outflowing matter, but anti-clockwise by infalling matter. It is observed that the material is generally outflowing, but few cases of inflow are also observed.
description: Accepted for publication in "Astronomy & Astrophysics"
Η ορθοδοξία στις περιγραφές των δυτικών (14ος-17ος αι. ):
Creators: name: Miron, Constantin Paul
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Περιηγητές
Προσκηνυματικές διηγήσεις
Anonymous coloniensis
Hans Schiltberger
Berhnard Breydenbach
Felix Fabri
Martin Gruneweg
Francois de la Boullage le Gouz
Pilgrims
Pilgrimaging description

description: Η παρούσα διπλωματική εργασία παρουσιάζει δυτικές πηγές από τον 14ο μέχρι τον 17ο αιώνα που αναφέρονται στην Ορθοδοξία. Δεν εξετάζονται θεολογικές μελέτες, αλλά περιγραφές ιδίως προσκυνητών που συναντούν την ορθόδοξη πίστη, λατρεία και καθημερινή ζωή. Μετά από ανάλυση των διαφόρων πηγών, της αξιοπιστίας τους και της ποικιλομορφίας τους παρουσιάζονται και αναλύονται συγκεκριμένα οι εξής συγγραφείς: Anonymus Coloniensis, Hans Schiltberger, Bernhard Breydenbach, Felix Fabri, Martin Gruneweg και François de La Boullaye Le Gouz. Τέλος γίνεται μία θεολογική αξιολόγηση των επαφών της Δύσης με την Ορθοδοξία και της σημασίας τους για το σημερινό οικουμενικό διάλογο.
description: The present dissertation thesis introduces the western literature sources from the 14th to the 17th century, which refer to the Orthodoxy. Our purpose was not to examine the theological works of the period, but mostly to follow the reports of the pilgrims, who have met the orthodox faith, the liturgical and the everyday life in their journeys. After the analysis of an assortment of sources, as well as their credibility and their diversity, we present the following writers: Anonymus Coloniensis, Hans Schiltberger, Bernhard Breydenbach, Felix Fabri, Martin Gruneweg and François de La Boullaye Le Gouz. We finally compose a theological appraisal for those contacts of the West with the orthodox East and their significance and role in our contemporary ecumenical movement.
Το όνειρο στην αρχαία ελληνική τραγωδία:
Creators: name: Βαγενά, Χρυσούλα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Ονειρο
Τραγωδία
Αισχύλος
Σοφοκλής
Ευριπίδης
Dream
Tragedy
Aescylus
Sophocles
Euripides

description: Η παρούσα εργασία πραγματεύεται τη λειτουργία των ονείρων στην αρχαία ελληνική τραγωδία. Το πρώτο κεφάλαιο αποτελεί μια γενικότερη εισαγωγή στο όνειρο όπου διερευνώνται η καταγωγή και τα αίτια γέννησης των ονείρων, το λεξιλόγιο του ονείρου, τα είδη στα οποία τα όνειρα διακρίνονται, αξιολογείται η συνεισφορά τους και τέλος, γίνεται λόγος και για την ερμηνεία τους. Στα τρία επόμενα κεφάλαια αναλύονται τα όνειρα που εμφανίζονται στα όνειρα του Αισχύλου, του Σοφοκλή και του Ευριπίδη αντίστοιχα. Τέλος, στο τελευταίο κεφάλαιο συνοψίζονται τα συμπεράσματα που συνάγονται από τη συγκριτική αποτίμηση των έργων των τριών τραγικών.
description: The present assignment deals with the function of dreams in ancient Greek tragedy. The first chapter is a general introduction to the dream in which the origin and the causes of their origin are investigated. Also, the vocabulary of the dream and the types that dreams are divided into are examined to, their contribution is evaluated and finally their interpretation is discussed. In the next three chapters the dreams which appear in the plays of Aeschylus, Sophocles and of Euripides are analyzed respectively. Finally, in the last chapter the conclusions that are arised from the comparative evaluation of the plays of the three tragic poets are summarized.
Design of mid-IR and THz quantum cascade laser cavities with complete TM photonic bandgap
Creators: name: Bahriz, Michael
name: Crisafulli, Orion
name: Moreau, Virginie
name: Colombelli, Raffaele
name: Painter, Oskar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present the design of mid-infrared and THz quantum cascade laser cavities formed from planar photonic crystals with a complete in-plane photonic bandgap. The design is based on a honeycomb lattice, and achieves a full in-plane photonic gap for transverse-magnetic polarized light while preserving a connected pattern for efficient electrical injection. Candidate defects modes for lasing are identified. This lattice is then used as a model system to demonstrate a novel effect: under certain conditions - that are typically satisfied in the THz range - a complete photonic gap can be obtained by the sole patterning of the top metal contact. This possibility greatly reduces the required fabrication complexity and avoids potential damage of the semiconductor active region.
description: 14 pages, 14 figures
Obliquity evolution of extrasolar terrestrial planets
Creators: name: Atobe, Keiko
name: Ida, Shigeru
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated the obliquity evolution of terrestrial planets in habitable zones (at ~ 1AU) in extrasolar planetary systems, due to tidal interactions with their satellite and host star with wide varieties of satellite-to-planet mass ratio and initial obliquity, through numerical calculations and analytical arguments. The obliquity, the angle between planetary spin axis and its orbit normal, of a terrestrial planet is one of the key factors in determining the planetary surface environments. A recent scenario of terrestrial planet accretion implies that giant impacts of Mars-sized bodies determine the planetary spin and form satellites. With isotropic giant impacts, tilted spins are more likely to be produced than straight ones and satellites with various mass are formed. However, most of previous studies have focused on a particular case of the Earth-Moon systems or the two-body planar problem. We numerically integrated the evolution of planetary spin and a satellite orbit with various satellite mass and initial obliquity. We found that in the case of initially tiled spins, the satellite's orbit migrates outward until the orbit reaches the critical radius ~ 10-20 planetary radii, but then the migration is reversed to inward one with large-amplitude oscillation. The satellite eventually falls onto the planetary surface or it is captured at the synchronous state at several planetary radii. With the results of numerical integration and analytical arguments, we identified the parameter regions of qualitatively different evolution.
description: 27 pages, 16 figures, Icarus, in press
Isolation and functional studies of D. discoideum cyclin B gene during growth and development
Creators: name: Luo, Qian Kathy
Publisher: name: University of British Columbia
Year: 2009

description: Cyclin B plays an essential role i n cell cycle regulation by complexing with Cdc2 protein kinase to direct cells into mitosis. A cyclin B gene (cycB) has been isolated from D. discoideum. The cyclin box region of the protein encoded by cycB has a high degree of sequence identity with B-type cyclins of other species. During celldivision synchronized growth, levels of cyclin B mRNA and protein were found to oscillate during the cell cycle with maximum accumulation occurring prior to and during cell division. Northern blot analysis showed that the cycB mRNA levels peaked twice during development, once during early aggregation (3 h) and again at the tipped aggregate stage (12 h). In contrast, the levels of cyclin B protein and histone H I kinase activity of the Cdc2-immunoprecipitate increased only during early development and then gradually decreased as development continued. The N-terminal region of the cyclin B protein has the conserved protein degradation motif, typical of cyclin B proteins. The 5' portion of the D. discoideum cycB gene was deleted and the truncated gene was cloned downstream from the regulatable discoidin promoter. Overexpression of this truncated cyclin B gene elevated the histone H I kinase activity of the Cdc2-immunoprecipitates, suggesting that the kinase activity was limited by the amount of the cyclin B i n the cells. The growth of these cyclin B overexpressing mutants was arrested during mitosis. These mitotically arrested cells formed very small fruiting bodies when allowed to undergo development. A protein that eluted together with the histidine tagged cyclin B fusion protein from a Ni-resin affinity column was identified as Cdc2, indicating a direct physical interaction between cyclin B and Cdc2. Indirect immunofluorescence staining using the cyclin B antibody revealed that D. discoideum cyclin B localized mainly in the nucleus. This is consistent with the finding that D. discoideum cyclin B is lacking the presumptive cytoplasmic signal sequence found in most of the B-type cyclins from multicellular organisms.
Entanglement scaling in critical two-dimensional fermionic and bosonic systems
Creators: name: Barthel, Thomas
name: Chung, Ming-Chiang
name: Schollwoeck, Ulrich
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We relate the reduced density matrices of quadratic bosonic and fermionic models to their Green's function matrices in a unified way and calculate the scaling of bipartite entanglement of finite systems in an infinite universe exactly. For critical fermionic 2D systems at T=0, two regimes of scaling are identified: generically, we find a logarithmic correction to the area law with a prefactor dependence on the chemical potential that confirms earlier predictions based on the Widom conjecture. If, however, the Fermi surface of the critical system is zero-dimensional, we find an area law with a sublogarithmic correction. For a critical bosonic 2D array of coupled oscillators at T=0, our results show that entanglement follows the area law without corrections.
description: 4 pages, 4 figures
A novel internal waves generator
Creators: name: Gostiaux, Louis
name: Didelle, Henri
name: Mercier, Stephane
name: Dauxois, Thierry
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a new kind of generator of internal waves which has been designed for three purposes. First, the oscillating boundary conditions force the fluid particles to travel in the preferred direction of the wave ray, hence reducing the mixing due to forcing. Secondly, only one ray tube is produced so that all of the energy is in the beam of interest. Thirdly, temporal and spatial frequency studies emphasize the high quality for temporal and spatial monochromaticity of the emitted beam. The greatest strength of this technique is therefore the ability to produce a large monochromatic and unidirectional beam.
Selective Etching of Hexagonal Boron Nitride by High-Pressure CF4 Plasma for Individual One-dimensional Ohmic Contacts to Graphene Layers
Creators: name: Seo, Yuta
name: Masubuchi, Satoru
name: Watanabe, Eisuke
name: Onodera, Momoko
name: Moriya, Rai
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Machida, Tomoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We describe a technique for making one-dimensional ohmic contacts to individual graphene layers encapsulated in hexagonal boron nitride (h-BN) using CF4 and O2 plasmas. The high etch selectivity of h-BN against graphene (>1000) is achieved by increasing the plasma pressure, which enables etching of h-BN, while graphene acts as an etch stop to protect underlying h-BN. A low-pressure O2 plasma anisotropically etches graphene in the vertical direction, which exposes graphene edges at h-BN sidewalls. Despite the O2 plasma bombardment, the lower h-BN layer functions as an insulating layer. Thus, this method allows us to pattern metal electrodes on h-BN over a second graphene layer. Subsequent electron-beam lithography and evaporation fabricate metal contacts at the graphene edges that are active down to cryogenic temperatures. This fabrication method is demonstrated by the preparation of a graphene Hall bar with a graphite back-gate and double bilayer-graphene Hall bar devices. The high flexibility of the device geometries enabled by this method creates access to a variety of experiments on electrostatically coupled graphene layers.
description: 4 figures, accepted for publication in Applied Physics Letters
Spontan intraserebral Kanamalar da Traneksamik Asit
Creators: name: Erkman Sanrı
Publisher: name: Zenodo
Year: 2018

description: Spontan (non-travmatik) intraserebral kanamalar tüm inmelerin %20’sini oluşturmaktadır ve inmelere bağlı ölümlerin nerede ise %50’sinden sorumludur. Mortalitesi bu kadar yüksek olmasına rağmen tüm inme grupları arasında spontan intraserebral kanamaların kanıta dayalı kesin ve net bir tedavisi bulunmamaktadır. Literatürde kanıta dayalı olarak faydası gösterilmiş olan tek tedavi TA düşürme tedavisi olarak göze çarpmaktadır1. Spontan intraserebral kanamalarda hematom ekspansiyonu komplikasyonu ilk saatler içerisinde gelişebilmektedir ve bu durum mortaliteyi ve morbiditeyi yükselten bir durumdur. Yapılan meta-analizde; hemostatik terapilerin (örn: rekombinant F7), hematom ekspansiyonunu önlemede faydasız olduğu gösterilmiştir2. Travmatik kanamalarda; traneksamik asitin (TXA) ve antifibrinolitik tedavilerin kanamaya bağlı mortaliteyi ciddi oranda düşürdüğü bilinmektedir. CRASH-2 çalışmasında travmatik kanamalarda erken dönemde verilen TXA’nın kanamaya bağlı mortaliteyi anlamlı oranda düşürdüğü gösterilmişti3.
ผลของอัตราส่วนผสมระหว่างก๊าซมีเทนกับก๊าซไฮโดรเจนต่อปริมาณธาตุไฮโดรเจนใน ในฟิล์มไฮโดรจิเนทเตดอะมอร์ฟัสคาร์บอน
Creators: name: นฤทธิ์ ฝ่ายบุตร
name: วิทยา อมรกิจบำรุง
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: รามานสเปกตรัม,อัตราส่วน ID/IG,ไฮโดรจิเนทเตด,อะมอร์ฟัสคาร์บอน,อัตราส่วนผสม,ก๊าซมีเทนต่อไฮโดรเจน

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Outer functions and uniform integrability
Creators: name: Mashreghi, Javad
name: Ransford, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30H15 (primary), 28A20 (secondary)

description: We show that, if $f$ is an outer function and $a\in[0,1)$, then the set of functions $\{\log |(f\circψ)^*|: ψ:\mathcal{D}\to\mathcal{D} \text{ holomorphic}, |ψ(0)|\le a\}$ is uniformly integrable on the unit circle. As an application, we derive a simple proof of the fact that, if $f$ is outer and $ϕ:\mathcal{D}\to\mathcal{D}$ is holomorphic, then $f\circϕ$ is outer.
พฤติกรรมการใช้หมวกนิรภัยในการป้องกันอุบัติเหตุของนักศึกษามหาวิทยาลัยราชภัฏสวนดุสิต
Creators: name: ณัฐบดี วิริยาวัฒน์
name: สุรชาติ สินวรณ์
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: พฤติกรรม,หมวกนิรภัย,การป้องกันอุบัติเหตุ,มหาวิทยาลัยราชภัฎสวนดุสิต

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
การพัฒนาเครื่องเขย่าสารต้นแบบ
Creators: name: สวิต ฉิมเรือง
name: สิรวัลภ์ เรืองช่วย
name: กาญจนศักดิ์ จารุปาน
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: เครื่องต้นแบบ,เครื่องเขย่าสาร

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Polarization-independent single-photon switch based on a fiber-optical Sagnac interferometer for quantum communication networks
Creators: name: Alarcón, A.
name: González, P.
name: Cariñe, J.
name: Lima, G.
name: Xavier, G. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An essential component of future quantum networks is an optical switch capable of dynamically routing single-photons. Here we implement such a switch, based on a fiber-optical Sagnac interferometer design. The routing is implemented with a pair of fast electro-optical telecom phase modulators placed inside the Sagnac loop, such that each modulator acts on an orthogonal polarization component of the single-photons, in order to yield polarization-independent capability that is crucial for several applications. We obtain an average extinction ratio of more than 19 dB between both outputs of the switch. Our experiment is built exclusively with commercial off-the-shelf components, thus allowing direct compatibility with current optical communication systems.
description: 6 pages, 3 figures
ผักพื้นบ้านชาวไทยทรงดำบริเวณตำบลดอนมะเกลือ อำเภออู่ทอง จังหวัดสุพรรณบุรี
Creators: name: ยุธยา อยู่เย็น
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: ผักพื้นบ้าน,ไทยทรงดา,ตำบลดอนมะเกลือ,จังหวัดสุพรรณบุรี

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
การประยุกต์ใช้ดัชนีชีวภาพประเมินคุณภาพน้ำในลำห้วยแม่ตาว อ้าเภอแม่สอด จังหวัดตาก
Creators: name: นัสรียา หมีนหวัง
name: อำพล พยัคฆา
name: แตงอ่อน พรหมมิ
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: ดัชนีชีวภาพ,แมลงน้า,คุณภาพน้ำ

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Ο ελληνισμός στη Νικομήδεια και την περιφέρειά της:
Creators: name: Ευδωρίδου, Αγάπη Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Ελληνισμός, χριστιανισμός
Νικομήδεια, Βιθυνία
Μικρασιατική καταστροφή
Hellenism christianism
Nikomedia Vithinia
Asia minor catastrophe

description: Η εργασία πραγματεύεται την πορεία του Ελληνισμού της Νικομήδειας (περιοχή της Μ.Ασίας στο ΝΑ της Ευρώπης που ανήκει σήμερα στην Τουρκία) από την αρχαιότητα έως σήμερα. Ιδιαίτερη έμφαση δίνεται στα γεγονότα των διωγμών και μαρτυριών του Ελληνικού – Χριστιανιστικού στοιχείου της περιοχής από τους Τούρκους κατά την περίοδο του 19ου-20ου αιώνα. Στην εργασία φωτίζονται πλευρές της Ελληνικής Ιστορίας σχετικά με τη Μικρασιατική Καταστροφή.
description: The current work studies the path of the Hellenism of Nikomedia (area of the Asia Minor, at the South-East part of Europe that belongs today in Turkey) from the antiquity times until today. Particular emphasis is given to the events of persecutions and martyrdoms of the Hellenic – Christian populations of the area by the Turks during the 19th and the 20th centuries. This work highlights parts of the Hellenic history regarding the Asia Minor Catastrophe.
Dynamical ensembles equivalence in fluid mechanics
Creators: name: Gallavotti, Giovanni
Publisher: name: arXiv
Year: 1996
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Dissipative Euler and Navier Stokes equations are discussed with the aim of proposing several experiments apt to test the equivalence of dynamical ensembles and the chaotic hypothesis.
description: Details on the claims on the cases of formal validity of the pairing rule are collected in the Erratum inserted before the references. The absebce of pairing does not affect the conjecture of equivalence in the paper
Superconductivity in Scandium Borocarbide with orbital hybridization
Creators: name: Wu, W.
name: Li, Y. J.
name: Zhang, J. H.
name: Yu, Z. H.
name: Liu, Z. Y.
name: Zheng, P.
name: Yang, H. X.
name: Dong, C.
name: Liu, K.
name: Xiang, T.
name: Luo, J. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Exploration of superconductivity in light element compounds has drawn considerable attention because those materials can easily realize the high $T_{c}$ superconductivity, such as ${\mathrm{LnNi}}_{2}{\mathrm{B}_{2}}{\mathrm{C}}$ ($T_{c}$ =17 K), ${\mathrm{Mg}}{\mathrm{B}}_{2}$ ($T_{c}$ =39 K), and very recently super-hydrides under pressure ($T_{c}$ =250 K). Here we report the discovery of bulk superconductivity at 7.8 K in scandium borocarbide ${\mathrm{Sc}}_{20}{\mathrm{B}}{\mathrm{C}}_{27}$ with a tetragonal lattice which structure changes based on the compound of ${\mathrm{Sc}}_{3}{\mathrm{C}}_{4}$ with very little B doping. Magnetization and specific heat measurements show bulk superconductivity. An upper critical field of Hc2(0) ~ 8 T is determined. Low temperature specific-heat shows that this system is a BCS fully gapped s-wave superconductor. Electronic structure calculations demonstrate that compared with ${\mathrm{Sc}}_{3}{\mathrm{C}}_{4}$ there are more orbital overlap and hybridization between Sc 3d electrons and 2p electrons of C-C(B)-C fragment in ${\mathrm{Sc}}_{20}{\mathrm{B}}{\mathrm{C}}_{27}$, which form a new electric conduction path of Sc-C(B)-Sc. Those changes influence the band structure at the Fermi level and may be the reason of superconductivity in ${\mathrm{Sc}}_{20}{\mathrm{B}}{\mathrm{C}}_{27}$.
description: 13 pages, 6 figures
The depletion of NO in pre-protostellar cores
Creators: name: Akyilmaz, Meltem
name: Flower, David
name: Hily-Blant, Pierre
name: forêts, G. Pineau Des
name: Walmsley, Malcolm
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Understanding the depletion of heavy elements is a fundamental step towards determining the structure of pre-protostellar cores just prior to collapse. We study the dependence of the NO abundance on position in the pre-protostellar cores L1544 and L183. We observed the 150 GHz and 250~GHz transitions of NO and the 93 GHz transitions of \NTHP \ towards L1544 and L183 using the IRAM 30 m telescope. We compare the variation of the NO column density with position in these objects with the H column density derived from dust emission measurements. We find that NO behaves differently from \NTHP \ and appears to be partially depleted in the high density core of L1544. Other oxygen-containing compounds are also likely to be partially depleted in dense-core nuclei. The principal conclusions are that: the prestellar core L1544 is likely to be 'carbon-rich'; the nitrogen chemistry did not reach equilibrium prior to gravitational collapse, and nitrogen is initially (at densities of the order of $10^4$~cm$^{-3}$) mainly in atomic form; the grain sticking probabilities of atomic C, N and, probably, O are significantly smaller than unity.
Insulin-like growth factor-I and the endocrine pancreas
Creators: name: McClean, Carole Anne
Publisher: name: University of British Columbia
Year: 2009

description: Insulin-like growth factor-I (IGF-I) has been determined to have both mitogenic and insulin-like metabolic effects on many tissue types. IGF-I has previously been shown to be secreted from, and to stimulate fi-cell activity in fetal pancreas. The present studies were performed in order to determine if IGF-I was present in adult endocrine pancreatic tissue, and if local IGF-I influenced insulin secretion in the adult islet. IGF-I immunoreactivity was present only in endocrine tissue and double staining techniques revealed that IGF-I immunoreactivity was colocalized only with insulin immunoreactivity. These results were confirmed at the electron microscope level, where IGF-I immunoreactivity was localized to B-cells, and furthermore, only to mature B-cell granules. In order to study pancreatic IGF-I concentrations and secretion, an IGF-I RIA was established, and a method of separating IGF-I from its binding proteins was validated. GH, the primary stimulator of IGF-I secretion from the liver and many other tissues, did not influence IGF-I secretion from either perfused pancreas, or isolated islet preparations. Nor did the insulin secretagogues GIP and glucose. Islet extracts subjected to high performance liquid chromatography (HPLC) revealed an elution peak, corresponding to that of the IGF-I standard, which indicated a low level of IGF-I in adult rat islets (approximately 1 pg/islet). IGF-I receptors were found to be present in islet tissue, as indicated by autoradiographic as well as by 1 2 5I-IGF-I binding studies. IGF-I stimulated insulin secretion from isolated adult rat islets, particularly at the highest level tested (170.0 nM). This effect was dependent on a stimulatory levels of glucose (8.9, 17.8 mM). Furthermore, low concentrations of IGF-I (1.7 nM, 17.0 nM) potentiated maximal GIP stimulated (10 nM) insulin secretion. Given findings by others that IGF-I can inhibit insulin secretion from the adult islet, it is proposed that in vitro study conditions influence the physiology of pancreatic IGF-I. The stimulatory effect of IGF-I on insulin secretion found in the present study suggests a fetal-like response of fl-cells to IGF-I and it is proposed that the inclusion of fetal serum in islet culture medium may result in adult islets showing fetal characteristics.
Strong field gravitational lensing in scalar tensor theories
Creators: name: Sarkar, Kabita
name: Bhadra, Arunava
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Strong field gravitational lensing in the Brans-Dicke theory has been studied. The deflection angle for photons passing very close to the photon sphere is estimated for the static spherically symmetric space-time of the theory and the position and magnification of the relativistic images are obtained. Modeling the super massive central object of the galaxy by the Brans-Dicke space-time, numerical values of different strong lensing observable are estimated. It is found that against the expectation there is no significant scalar field effect in the strong field observable lensing parameters. This observation raises question on the potentiality of the strong field lensing to discriminate different gravitational theories.
description: 20 pages, published in Class. Quantum Grav., final version, two references added
A mirror theorem for Gromov-Witten theory without convexity
Creators: name: Wang, Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20, 14D23, 14N35

description: We prove a genus zero Givental-style mirror theorem for all complete intersections in proper toric Deligne-Mumford stacks, which provides an explicit slice called big $I-$function on Givental's Lagrangian cone for such targets. In particular, we remove a technical assumption called convexity needed in previous quantum Lefschetz theorem.
description: Results strengthened to all complete intersections and big I-functions. Comments are very welcome!
Reflectionless excitation of arbitrary photonic structures: A general theory
Creators: name: Stone, A. Douglas
name: Sweeney, William R.
name: Hsu, Chia Wei
name: Wisal, Kabish
name: Wang, Zeyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We outline a recently developed theory of impedance-matching, or reflectionless excitation of arbitrary finite photonic structures in any dimension. It describes the necessary and sufficient conditions for perfectly reflectionless excitation to be possible, and specifies how many physical parameters must be tuned to achieve this. In the absence of geometric symmetries the tuning of at least one structural parameter will be necessary to achieve reflectionless excitation. The theory employs a recently identified set of complex-frequency solutions of the Maxwell equations as a starting point, which are defined by having zero reflection into a chosen set of input channels, and which are referred to as R-zeros. Tuning is generically necessary in order to move an R-zero to the real-frequency axis, where it becomes a physical steady-state solution, referred to as a Reflectionless Scattering Mode (RSM). Except in single-channel systems, the RSM corresponds to a particular input wavefront, and any other wavefront will generally not be reflectionless. In a structure with parity and time-reversal symmmetry or with parity-time symmetry, generically a subset of R-zeros is real, and reflectionless states exist without structural tuning. Such systems can exhibit symmetry-breaking transitions when two RSMs meet, which corresponds to a recently identified kind of exceptional point at which the shape of the reflection and transmission resonance lineshape is flattened.
description: 15 pages, 6 figures, to appear in Nanophotonics
Exploring Halo Substructure with Giant Stars: The Dynamics and Metallicity of the Dwarf Spheroidal in Bootes
Creators: name: Munoz, Ricardo R.
name: Carlin, Jeffrey L.
name: Frinchaboy, Peter M.
name: Nidever, David L.
name: Majewski, Steven R.
name: Patterson, Richard J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results of a spectroscopic study of the Bootes (Boo) dwarf spheroidal (dSph) galaxy carried out with the WIYN telescope and the Hydra multifiber spectrograph. Radial velocities have been measured for 58 Boo candidate stars selected to have magnitudes and colors consistent with its red and asymptotic giant branches. Within the 13' half-light radius, seven members of Boo yield a systemic velocity of V_r=95.6+-3.4 km/s and a velocity dispersion of 6.6+-2.3 km/s. This implies a mass on the order of 1 x 10^7 M_sun, similar to the inferred masses of other Galactic dSphs. Adopting a total Boo luminosity of L=1.8 x 10^4 L_sun to 8.6 x 10^4 L_sun implies M/L ~ 610 to 130, making Boo, the most distorted known Milky Way dwarf galaxy, potentially also the darkest. From the spectra of Boo member stars we estimate its metallicity to be [Fe/H] ~ -2.5, which would make it the most metal poor dSph known to date.
description: Accepted for publication in ApJ Letters
On the effect of variable identification on the essential arity of functions
Creators: name: Couceiro, Miguel
name: Lehtonen, Erkko
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 08A40, 06E30

description: We show that every function of several variables on a finite set of k elements with n>k essential variables has a variable identification minor with at least n-k essential variables. This is a generalization of a theorem of Salomaa on the essential variables of Boolean functions. We also strengthen Salomaa's theorem by characterizing all the Boolean functions f having a variable identification minor that has just one essential variable less than f.
description: 10 pages
The neutral hydrogen distribution in large-scale haloes from 21-cm intensity maps
Creators: name: Tramonte, Denis
name: Ma, Yin-Zhe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We detect the neutral hydrogen (HI) radial brightness temperature profile in large-scale haloes by stacking 48,430 galaxies selected from the 2dFGRS catalogue onto a set of 21-cm intensity maps obtained with the Parkes radio telescope, spanning a total area of $\sim$1,300 $\text{deg}^2$ on the sky and covering the redshift range $0.06\lesssim z\lesssim 0.10$. Maps are obtained by removing both 10 and 20 foreground modes in the principal component analysis. We perform the stack at the map level and extract the profile from a circularly symmetrised version of the halo emission. We detect the HI halo emission with the significance $12.5σ$ for the 10-mode and $13.5σ$ for the 20-mode removed maps at the profile peak. We jointly fit for the observed halo mass $M_{\rm v}$ and the normalisation $c_{0,\rm HI}$ for the HI concentration parameter against the reconstructed profiles, using functional forms for the HI halo abundance proposed in the literature. We find $\log_{10}{(M_{\rm v}/\text{M}_{\odot})} = 16.1^{+0.1}_{-0.2}$, $c_{0,\rm HI}=3.5^{+0.7}_{-1.0}$ for the 10-mode and $\log_{10}{(M_{\rm v}/\text{M}_{\odot})} = 16.5^{+0.1}_{-0.2}$, $c_{0,\rm HI}=5.3^{+1.1}_{-1.7}$ for the 20-mode removed maps. These estimates show the detection of the integrated contribution from multiple galaxies located inside very massive haloes. We also consider sub-samples of 13,979 central and 34,361 satellite 2dF galaxies separately, and obtain marginal differences suggesting satellite galaxies are HI-richer. This work shows for the first time the feasibility of testing theoretical models for the HI halo content directly on profiles extracted from 21-cm maps and opens future possibilities for exploiting upcoming HI intensity-mapping data.
description: 20 pages, 13 figures. Accepted for publication in MNRAS
Αντισεισμικός σχεδιασμός σεισμικώς μονωμένης σιδηροδρομικής γέφυρας και μονολιθικής παραλλαγής της με εμπλοκή των ακροβάθρων:
Creators: name: Μπερμπέρογλου, Εμμανουήλ Λάζαρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Αντισεισμικός
Γέφυρα
Ακρόβαθρο
Abutment
Isolated
Bridge

description: Στα πλαίσια της παρούσας διπλωματικής, που αποτελείται από δύο τμήματα, αρχικά μελετάται ένα σύστημα μιας σεισμικά μονωμένης γέφυρας. Ενώ στο δεύτερο της τμήμα, εξετάζεται μια εναλλακτική λύση της γέφυρας με ένα πλήρως μονολιθικό σύστημα με την εμπλοκή και των ακροβάθρων. Εν κατακλείδι οι δύο λύσεις συγκρίνονται μεταξύ τους σε επίπεδο οικονομικότητας όσον αφορά το απαιτούμενα κόστος των υλικών και εργασιών τους.Πιο αναλυτικά, το πρώτο τμήμα περιλαμβάνεται αρχικά μια περιγραφή της γέφυρας αφετηρίας-σεισμικά μονωμένης και σημαντικών στοιχείων προσομοίωσης της. Ακολουθεί υπολογισμός των δυναμικών χαρακτηριστικών της γέφυρας σύμφωνα με τις προτεινόμενες μεθόδους των κανονισμών και έλεγχος του συστήματος της σεισμικής της μόνωσης.Τέλος γίνεται ανάλυση της με ανελαστική δυναμική ανάλυση για την επαλήθευση των προηγούμενων υπολογισμών.Στο δεύτερο τμήμα γίνεται περιγραφή των αλλαγών της γέφυρας ώστε να προκύψει ένα πλήρως μονολιθικό σύστημα. Ακολουθεί αντισεισμικός υπολογισμός των κατακόρυφων στοιχειών της και υπολογισμός του κόστους των νέων υλικών της. Τέλος γίνεται μια σύγκριση μεταξύ των δύο λύσεων όσον αφορά την οικονομικότητα της κάθε μίας.
description: As part of this thesis, which consists of two sections , initially a seismic isolated bridge was studied. While in the second section, an alternative solution of the initial bridge with an integral - jointless system with the involvement of its abutments was investigated. Finally the two solutions were compared at a financial level on the cost of necessary materials and labor.More specifically, the first part contains a description of the initial seismic isolated - bridge and some important elements of the simulation. The calculation of the dynamic characteristics of the bridge according to the methods which are proposed by the regulations, and the checking of sections providing seismic isolation such as bearings and shear keys follow. Finally the bridge was analyzed with inelastic dynamic analysis (Time History) in order to verify the previous calculations.The second part contains a description of the initial bridge’s changes in order to produce a monolithic structural system, followed by the seismic design of the new bridge’s vertical members and a new cost estimation. Finally, a comparison was made between the two solutions on both total and individual costs.
Diversity and Seasonality of Caddisflies (Insecta: Trichoptera) at Champathong Waterfall, Northern Thailand
Creators: name: Taeng-On Prommi
name: Kriengkrai Seetapan
name: PenkhaeThamsenanupap
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2555
Subjects: Light traps,caddisflies,biodiversity,seasonality

description: 2, 5, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Molecular beam epitaxy growth of the highly conductive oxide SrMoO$_3$
Creators: name: Takatsu, Hiroshi
name: Yamashina, Naoya
name: Shiga, Daisuke
name: Yukawa, Ryu
name: Horiba, Koji
name: Kumigashira, Hiroshi
name: Terashima, Takahito
name: Kageyama, Hiroshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: SrMoO$_3$ is a promising material for its excellent electrical conductivity, but growing high-quality thin films remains a challenge. Here we synthesized epitaxial films of SrMoO$_3$ using the molecular beam epitaxy (MBE) technique under a low oxygen-flow rate. Introduction of SrTiO$_3$ buffer layers of 4--8 unit cells between the film and the (001)-oriented SrTiO$_3$ or KTaO$_3$ substrate was crucial to remove impurities and/or roughness of the film surface. The obtained film shows improved electrical conductivities as compared with films obtained by other techniques. The high quality of the SrMoO$_3$ film is also verified by angle-resolved photoemission spectroscopy (ARPES) measurements showing clear Fermi surfaces.
description: 6 pages, 5 figures
$Ξ$-nucleus potential for $Ξ^-$ quasifree production in the $^9$Be($K^-$, $K^+$) reaction
Creators: name: Harada, Toru
name: Hirabayashi, Yoshiharu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study phenomenologically a $Ξ^-$ production spectrum of the $^9$Be($K^-$, $K^+$) reaction at 1.8 GeV/$c$ within the distorted-wave impulse approximation using the optimal Fermi-averaged $K^- p \to K^+ Ξ^-$ amplitude. We attempt to clarify properties of a $Ξ$-nucleus potential for $Ξ^-$-$^8$Li, comparing the calculated spectrum with the data of the BNL-E906 experiment. The results show a weak attraction in the $Ξ$-nucleus potential for $Ξ^-$-$^8$Li, which can sufficiently explain the data in the $Ξ^-$ quasifree region. The strength of $V_0^Ξ=$ $-17 \pm 6$ MeV is favored within the Woods-Saxon potential, accompanied by the reasonable absorption of $W_0^Ξ=$ $-5$ MeV for $Ξ^-p \to Ξ^0n$, $ΛΛ$ transitions in nuclear medium. It is difficult to determine the value of $W_0^Ξ$ from the data due to the insufficient resolution of 14.7 MeV FWHM. The energy dependence of the Fermi-averaged $K^- p \to K^+ Ξ^-$ amplitude is also confirmed by this analysis, and its importance in the nuclear ($K^-$, $K^+$) reaction is emphasized.
description: 20 pages, 5 figures. arXiv admin note: text overlap with arXiv:1712.02664
MAKTABGACHA YOSHDAGI BOLALAR PSIXALOGIYASINING O'RGANILGANLIK XOLATI
Creators: name: Norqulova, Ruxshona
Publisher: name: Zenodo
Year: 2024

description: Maqolada maktabgacha yoshdagi bolalar psixalogiyasini o’rganilganlik holati va ularga keraklicha tavsiyalar borasida fikr yuritiladi. Maktabgacha  yoshdagi bolalar psixologiyasi va ularni o’rganilganlik sabablari o’rganilib tahlil qilingan va bartaraf etilgan yo’llari haqida malumotlar berilgan.
Differentiation of functionals with variables coupled by constraints: Analysis through a fluid-dynamical model
Creators: name: Gal, Tamas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Analysing an application in liquid film dynamics, a guide for obtaining the corresponding constrained functional derivatives for constraints coupling the functional variables is given. The use of constrained derivatives makes the proper account for constraints possible in time-dependent, nonequilibrium physical theories, with physical equations not emerging as Euler-Lagrange equations, which is especially relevant with respect to the dynamics of complex liquids.
description: 12 pages; with further cases of coupling added, extended opening discussion of constrained derivative, and some notation changed
Inequivalent representations of commutator or anticommutator rings of field operators and their applications
Creators: name: Matejka, Michal
name: Noga, Milan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hamiltonian of a system in quantum field theory can give rise to infinitely many partition functions which correspond to infinitely many inequivalent representations of the canonical commutator or anticommutator rings of field operators. This implies that the system can theoretically exist in infinitely many Gibbs states. The system resides in the Gibbs state which corresponds to its minimal Helmholtz free energy at a given range of the thermodynamic variables. Individual inequivalent representations are associated with different thermodynamic phases of the system. The BCS Hamiltonian of superconductivity is chosen to be an explicit example for the demonstration of the important role of inequivalent representations in practical applications. Its analysis from the inequivalent representations' point of view has led to a recognition of a novel type of the superconducting phase transition.
description: 25 pages, 6 figures
Kanser ilişkili Venöz Tromboembolide Düşük Molekül Ağırlıklı Heparin
Creators: name: Erkman Sanrı
Publisher: name: Zenodo
Year: 2018

description: Kanser hastalarında venöz tromboemboli (VTE) sık görülebilmektedir. Bu hasta grubunda tedavi hiç de kolay değildir. Tedavi sürecinde, artmış rekürren tromboz ve kanama riski gibi acil hekimini zorlayacak durumlar bulunmaktadır. Kanser ilişkili VTE de düşük molekül ağırlıklı heparin (DMAH), Anfraksiyone heparin (UFH) ve Varfarin kullanılan tedavilerdendir. 2003 yılına kadar sıklıkla tedaviye önce Varfarin ile başlanıp sonrasında UFH veya DMAH ile devam edilmekteydi. Bu tedavi yaklaşımında; sürekli ve dikkatli monitorizasyon gerekliliği ve ilaç etkileşimine bağlı öngörülemeyen antikoagülasyon durumu gibi zorluklar literatürde birçok kere yerini almıştır.
Out-of-equilibrium dynamics in a gaussian trap model
Creators: name: Diezemann, Gregor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The violations of the fluctuation-dissipation theorem are analyzed for a trap model with a gausssian density of states. In this model, the system reaches thermal equilibrium for long times after a quench to any finite temperature and therefore all aging effect are of a transient nature. For not too long times after the quench it is found that the so-called fluctuation-dissipation ratio tends to a non-trivial limit, thus inicating the possibility for the definition of a time scale dependent effective temperature. However, different definitions of the effective temperature yield distinct results. In particular plots of the integrated response versus the correlation function strongly depend on the way they are constructed. Also the definition of effective temperatures in the frequency domain is not unique for the model considered. This may have some implications for the interpretation of results from computer simulations and experimental determinations of effective temperatures.
description: Proceedings of the workshop on non-equilibrium phenomena in supercooled fluids, glasses and amorphous materials (17-22 September, Pisa)