cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-derivatives and massive electromagnetic models in the Lemaitre-Tolman-Bondi spacetime
Creators: name: Fernandes, Rafael L.
name: Abreu, Everton M. C.
name: Ribeiro, Marcelo B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Maxwell electromagnetic theory embedded in an inhomogeneous Lema\^ıtre-Tolman-Bondi (LTB) spacetime background was described a few years back in the literature. However, terms concerning the mass or high-derivatives were no explored. In this work we studied the inhomogeneous spacetime effects on high-derivatives and massive electromagnetic models. We used the LTB metric and calculated the physical quantities of interest, namely the scale factor, density of the electromagnetic field and Hubble constant, for the Proca and higher-derivative Podolsky models. We found a new singularity in both models, and that the magnetic field must be zero in the Proca model.
description: Accepted for publication in the European Physical Journal C (Particles and Fields)
Membership Card for the Nirvanetta Club
Creators: name: Creator not identified.
Publisher: name: DigitalHub. Galter Health Sciences Library & Learning Center
Year: 1944
Subjects: subject: World War II
subject: 12th General Hospital
subject: Souvenirs
subject: Military Personnel
subject: Membership cards
subject: Nightclubs
subject: Rome (Italy)

description: Membership card for The Nirvanetta Club for allied officers issued to Captain Hoebel.
KVAZICHIZIQLI ISSIQLIK O`TKAZUVCHANLIK TENGLAMASI UCHUN QO`YILGAN BOSHLANG`ICH CHEGARAVIY MASALANI YECHISH
Creators: name: Yigitali Xolmirza Ogli Xandamov
name: Mirjalol Turon Ogli Shodmonqulov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: ikkinchi tartibli parabolik tipdagi tenglamalariga taluqli issiqlik o’tkazish tenglamasi bilan ifodalangan nostatsionar issiqlik o`tkazuvchanlik tenglamasi
chegaraviy masalaning qo’yilishi
ayirmali sxemalar
maksimum prinsipi va approksimatsiya

description: Maqolada ikkinchi tartibli parabolik tipdagi tenglamalar uchun chegaraviy masala qo`yilishi, nostatsionar issiqlik o`tkazuvchanlik tenglamasi uchun ayirmali sxemalar yaqinlashishi va maksimum prinsipi o`rganildi. Tanlab olingan namunaviy masala maksimum prinsipi va teks yaqinlashishga tekshirildi
Analyse des Digitalisierungsgrads von Bildungseinrichtungen auf Basis von Webscraping – eine methodische Vorstudie
Creators: name: Proeger, Till
name: Meub, Lukas
name: Pölert, Hauke
Publisher: name: Göttingen : ifh, Volkswirtschaftliches Institut für Mittelstand und Handwerk an der Universität Göttingen
Year: 2021
Subjects: Bildungseinrichtungen
Digitalisierung
Webscraping

description: Diese Vorstudie zeigt beispielhaft, wie mit der Methodik des Webscrapings, d.h. einem systematischen Abruf und statistischer Analyse von Webseiten, Erkenntnisse über Bildungseinrichtungen gewonnen werden. Anhand von zwei Teilstudien über 200 niedersächsische sowie 173 Bildungseinrichtungen aus Nordrhein-Westfalen wird eine strukturelle und inhaltsbezogene Analyse der Webseiten durchgeführt. Der Fokus liegt dabei auf dem Digitalisierungsgrad und der Nutzung digitaler Technologien durch die Bildungseinrichtungen. Übergreifend zeigt die Studie: • Webscraping ist ein geeignetes Werkzeug zur umfassenden und tagesaktuellen Analyse von Bildungseinrichtungen insbesondere im Hinblick auf deren Digitalisierungsgrad und die Nutzung zentraler Technologien. • Webscraping weist eine Reihe von Vorteilen gegenüber klassischen Befragungen auf, wobei insbesondere die effiziente Nutzung größerer Stichproben bei begrenztem Aufwand sowie die Möglichkeit zur wiederholten Abfrage von Informationen zentrale Vorteile darstellen. • Die regelmäßige Analyse der Webseiten ermöglicht ein dauerhaftes regionales bis deutschlandweites Monitoring von Veränderungen im Digitalisierungsverhalten. Dies ermöglicht es, die Wirkung von Förderprogrammen oder Beratungsleistungen, etwa zwischen Bundesländern oder Schulträgern, zu evaluieren. • Insbesondere können die Webseiten transparent in Bezug auf die Nutzung spezifischer Technologien, Apps, Plattformen oder sozialen Netzwerken analysiert werden. Hiermit lässt sich effizient zeigen, welche Schulen mit welchen Technologien werben, welche Regionen sich in technologischer Hinsicht dynamisch entwickeln und wo Marktpotenziale für einzelne Technologien bestehen. • Webscraping ermöglicht es, in deutschlandweiten Stichproben bei Bildungseinrich¬tungen Vorreiter und Nachzügler im Hinblick auf das Digitalisierungsverhalten zu identifizieren, regionale, bundeslandbezogene und deutschlandweite Vergleichs¬gruppen zu bilden sowie diese kartografisch darzustellen. • Ebenso kann der Zusammenhang der soziodemografischen Eigenschaften von Regionen mit den Ergebnissen des Webscrapings untersucht werden, etwa im Hinblick darauf, welche systematischen Unterschiede zwischen dem Digitalisierungsverhalten von Bildungseinrichtungen in Stadt und Land oder zwischen Regionen mit unterschiedlichem Wohlstandsniveau bestehen. Übergreifend stellt Webscraping ein innovatives und effizient einsetzbares Instrument für die systematische Analyse der Entwicklung von Bildungseinrichtungen im Feld der Digitalisierung dar.
description: Göttinger Beiträge zur Handwerksforschung ; 56
ТАЛАБАЛАРГА КОНСТРУКТОРЛИК ТАЙЁРГАРЛИГИ БЕРУВЧИ ФАНЛАРНИ ЎҚИТИШНИ ТАКОМИЛЛАШТИРИШ МАСАЛАЛАРИ
Creators: name: Rajabov, Sharif Yuldoshovich
name: Shalikorova, Dilfuza Maxmudjanovna
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: конструкторлик
технология
махсус курс
мухандислик
мутахассис
механизм
объект
лойихалаш
чизмачилик
теплотехника
назарий механика
машина ва механизмлар назарияси
материаллар қаршилиги
машина деталлари
гидравлика

description: Ушбу мақолада олий ўқув юртларининг ўқитувчилар тайёрлаш ва педагогика фани таълим сохасида, технология таълими йўналиши бўйича бакалаврлар тайёрлашда техника фанларидан талабаларга берилаётган билимларни уларнинг педагогик фаолиятларида яъни мактаб ўқув устахоналарида, техник тўгаракларда, ўрта махсус, касб-ҳунар таълими муассасаларида ўқувчиларга конструктор – технологик билимларни бериш жараёнида қўллашни ўргатувчи махсус курс ташкил этиш, хамда техника фанларидан олинган билимлар натижасини оширишдир
Effect of Accelerated Weathering on the Compressive Strength for PMMA Nano Composites and PMMA Hybrids Nano Composites Used in Dental Applications
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 110501 Dental Materials and Equipment
subject: FOS: Clinical medicine
subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering

description: In the present research, efforts are made to develop the properties of PMMA resin that used for upper and lower prosthesis complete denture, by addition four different types of nanoparticles powders, which are fly ash, fly dust, zirconia and aluminum that added with different ratios of volume fractions of (0.01, 0.02 and 0.03) to poly methyl methacrylate (PMMA), cold cured resin (castavaria) is the new fluid resin (pour type) as a matrix. The nano composite and hybrid nano composite for prosthetic dentures specimens, preparation was done by using (Hand Lay-Up) method as six groups which includes: the first three groups consists of PMMA resin reinforced by fly ash , fly dust and ZrO2 nanoparticles respectively, the second three groups consists of three types of hybrid nano composites, which includes ((PMMA:X% fly ash) - (1%Al + 3%ZrO2)), ((PMMA:X% fly dust) - (1% Al + 3%ZrO2)) and ((PMMA:nZrO2) - (1% fly ash+ 3% fly dust)) respectively. As well as, the effect of moisture and UV was taking into consideration in this study. The compression test results shows that the values of compressive strength, compressive elastic modulus, and compressive strength under the effect of accelerated weathering (moisture and UV radiation) increased with the addition of nano powders (fly ash, fly dust, zirconia and aluminum). As well as, the results showed that the maximum values of compressive strength reach to (286.25MPa) for (PMMA + 2%nZrO2) nano composite. In addition, the results showed that the compressive elastic modulus reach to the maximum value (25.4166GPa) in the nano composite material (PMMA + 2%nZrO2). Moreover, the results showed that the compressive strength under the effect of accelerated weathering (moisture and UV radiation) reach to the maximum value to (315MPa) for the nano composite material (PMMA + 3%nZrO2).
Nachhaltigkeitsindikatorik für das Handwerk
Creators: name: Dilekoglu, Kübra
name: Proeger, Till
name: Meub, Lukas
Publisher: name: Göttingen : ifh, Volkswirtschaftliches Institut für Mittelstand und Handwerk an der Universität Göttingen
Year: 2021
Subjects: Handwerk
Indikatorik
Sustainable Development Goals

description: Das Handwerk kann in vielen Dimensionen als nachhaltiger Sektor der Volkswirtschaft betrachtet werden. Insbesondere wenn ein breiter Nachhaltigkeitsbegriff zugrunde gelegt wird, der ökonomische, ökologische und soziale Aspekte berücksichtigt, können viele strukturelle Eigenschaften des Handwerks einen Beitrag zur nachhaltigen Entwicklung leisten. Die quantitative Abbildung der verschiedenen Nachhaltigkeitsdimensionen und die Analyse von Veränderungen im Zeitverlauf ist dennoch bislang nur begrenzt möglich. Trotz einer Vielzahl einzelner Indikatoren aus verschiedenen Erhebungen besteht bislang keine umfassende Übersicht über die möglichen Nachhaltigkeitsmessgrößen im Handwerk. Die vorliegende Studie strukturiert die Nachhaltigkeitsdimension entlang der Ziele für nachhaltige Entwicklung (Sustainable Development Goals [SDG)]) der Vereinigten Nationen (UN) und der darauf aufbauenden deutschen Nachhaltigkeitsstrategie. Hierzu werden 70 Indikatoren und mögliche 245 Datenquellen für das Handwerk zugeordnet. Diese können für quantitative Nachhaltigkeitsanalysen für den gesamten handwerklichen Sektor, für einzelne Teilbereiche des Handwerks und für die Analyse von Veränderungen genutzt werden. Ebenso werden Nachhaltigkeitsdimensionen deutlich, in denen viele Datensätze verfügbar sind, ebenso wie Bereiche, in denen aussagekräftige Daten bislang fehlen. Die Studie bildet damit eine Grundlage für künftige umfassende sektorale Nachhaltigkeitserhebungen für das Handwerk.
description: Göttinger Beiträge zur Handwerksforschung ; 58
CULTURAL EXCHANGE: A COMMUNICATION MODEL FOR REENTRY TRANSITION
Creators: name: Moeller, Philip Williams
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1638.
Leishmanicidal phenolic compounds derived from Dalbergia cultrata
Creators: name: Mori-Yasumoto, Kanami
name: Hashimoto, Yukihiro
name: Agatsuma, Yutaka
name: Fuchino, Hiroyuki
name: Yasumoto, Ko
name: Shirota, Osamu
name: Motoyoshi Satake
name: Sekita, Setsuko
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Leishmaniasis is a protozoan tropical infection that is estimated to be more than 0.3 million new cases occur annually worldwide. A novel phenolic compound, cultratin A (1), was isolated as a leishmanicidal constituent from the timber of Dalbergia cultrata, along with three known neoflavanoids (2, 3, 4), two benzofurans (5, 6), and two phenolic compounds (7, 8). Their structures were determined using spectral methods. Among them, a new compound (1) and 4-(S)-methoxydalbergione (2) showed effective leishmanicidal activities (IC50: 2.0 and 2.6 μM, respectively), while compound 8 showed moderate activity (IC50: 11 μM). The cytotoxicity of compounds 1 and 2 was also weaker than that of the other compounds.
The Tidal Disruption Event AT 2018hyz I: Double-peaked emission lines and a flat Balmer decrement
Creators: name: Short, P.
name: Nicholl, M.
name: Lawrence, A.
name: Gomez, S.
name: Arcavi, I.
name: Wevers, T.
name: Leloudas, G.
name: Schulze, S.
name: Anderson, J. P.
name: Berger, E.
name: Blanchard, P. K.
name: Burke, J.
name: Segura, N. Castro
name: Charalampopoulos, P.
name: Chornock, R.
name: Galbany, L.
name: Gromadzki, M.
name: Herzog, L. J.
name: Hiramatsu, D.
name: Horne, Keith
name: Hosseinzadeh, G.
name: Howell, D. Andrew
name: Ihanec, N.
name: Inserra, C.
name: Kankare, E.
name: Maguire, K.
name: McCully, C.
name: Bravo, T. E. Müller
name: Onori, F.
name: Sollerman, J.
name: Young, D. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results from spectroscopic observations of AT 2018hyz, a transient discovered by the ASAS-SN survey at an absolute magnitude of $M_V\sim -20.2$ mag, in the nucleus of a quiescent galaxy with strong Balmer absorption lines. AT 2018hyz shows a blue spectral continuum and broad emission lines, consistent with previous TDE candidates. High cadence follow-up spectra show broad Balmer lines and He I in early spectra, with He II making an appearance after $\sim70-100$ days. The Balmer lines evolve from a smooth broad profile, through a boxy, asymmetric double-peaked phase consistent with accretion disc emission, and back to smooth at late times. The Balmer lines are unlike typical AGN in that they show a flat Balmer decrement (H$α$/H$β\sim1.5$), suggesting the lines are collisionally excited rather than being produced via photo-ionisation. The flat Balmer decrement together with the complex profiles suggest that the emission lines originate in a disc chromosphere, analogous to those seen in cataclysmic variables. The low optical depth of material due to a possible partial disruption may be what allows us to observe these double-peaked, collisionally excited lines. The late appearance of He II may be due to an expanding photosphere or outflow, or late-time shocks in debris collisions.
description: Published in MNRAS. Accompanied by companion paper Gomez et al. (2020)
CONSTRUCTION INDUSTRY
Creators: name: Shuxrat Ruzmatovich Masharipov
name: Shavkat Normatovich Navruzov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Construction; Project managers; Knowledge; Skills; Experience

description: Project managers in today's construction industry are faced with a situation whereby the fundamental roles and functions they perform are witnessing a gradual shift in focus. To maintain their professional competency, practising project managers in construction adapt to this changing industry environment by relying on knowledge and skills acquired through training and experience
A COMPARATIVE STUDY OF ENVIRONMENTAL EXPECTATIONS OF FEMALE VERSUS MALE MIDSHIPMEN ENTERING THE UNITED STATES NAVAL ACADEMY
Creators: name: Neuberger, Carmen Guevara
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3903
subject: Education systems

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1256.
Ferromagnetism in quark matter
Creators: name: Niegawa, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the magnetic property of the cold quark matter employing the magnetic moment $\vecμ'$ as the order parameter. Through analysis of the effective potential $V (\vecμ^{' 2})$, we find that, at relatively high densities $ρ> ρ_c$, the quark matter is in the normal phase. At $ρ= ρ_c$, the magnetic phase transition takes place and, in the low-density region $ρ< ρ_c$, the quark matter is in the ferromagnetic phase. For up, down and strange quarks, $ρ_c = 1.62 ρ_0$, $1.47 ρ_0$ and $2.20 ρ_0$ ($ρ_0$ the nuclear density), respectively. We also find that the leptons ($e$ and $μ$) inside the quark matter are in the normal phase.
description: 22 pages, 13 figures
Effect of Water Absorption on the Compressive Strength for PMMA Nano Composites and PMMA Hybrids Nano Composites Reinforced by Different Nanoparticles Used in Dental Applications
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 110501 Dental Materials and Equipment
subject: FOS: Clinical medicine
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 91299 Materials Engineering not elsewhere classified

description: Poly methyl methacrylate (PMMA), are widely used as a prosthodontic denture base, the denture base materials should exhibit good mechanical properties and dimensional stability in moist environment. In the present research, efforts were made to develop the properties of PMMA resin that used for upper and lower prosthesis complete denture, by addition four different types of nanoparticles, which are fly ash, fly dust, zirconia and aluminum that added with different ratios of volume fractions of (1%, 2% and 3%) to poly methyl methacrylate (PMMA), cold cured resin (castavaria) is the new fluid resin (pour type) as a matrix. In this work, the Nano composite and hybrid Nano composite for prosthetic dentures specimens, preparation was done by using (Hand Lay-Up) method as six groups which includes: the first three groups consists of PMMA resin reinforced by fly ash , fly dust and ZrO2 nanoparticles respectively, the second three groups consists of three types of hybrid Nano composites, which includes ((PMMA:X% fly ash)+ (1%Al + 3% ZrO2 )), ((PMMA:X% fly dust)+ (1%Al + 3% ZrO2)) and ((PMMA:X%nZrO2)+(1%fly ash+3%fly dust)) respectively. As well as, the effect of water absorption was taking into consideration in this study. The compression test results show that the values of the compressive strength with and without the effect of water absorption increased with the addition of Nano powders (fly ash, fly dust, zirconia, and aluminum). Also, the results showed that the maximum values of compressive strength reach to 286.25MPa for (PMMA: 2%nZrO2) Nano composite. Whereas the maximum values of compressive strength for hybrid Nano composite reach to 270MPa for ((PMMA: 2%fly ash) + (1%Al + 3% ZrO2)) hybrid Nano composite. Moreover, the results showed that the maximum value of compressive strength under the effect of water absorption reach to 335MPa in the Nano composite material (PMMA+2% fly dust), whereas the maximum value of compressive strength under the effect of water absorption for hybrid Nano composite reach to 632MPa for ((PMMA: 2% fly dust) + (1%Al + 3% ZrO2)) hybrid Nano composite.
SHAHAR ATROF POYEZDLARI TO'XTASH PUNKTLARINING ORALIQ MASOFALARINI ANIQLASH TARTIBLARI
Creators: name: Shuxrat Xamroqul Ogli Boriyev
name: Butunov, Dilmurod Boxodirovich
name: Otkir Oktamjon Ogli Xusenov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: shahar atrof poyezdi
zona stansiyasi
to‘xtash punkti
yo‘lovchi tashish zichligi
qurilish harajatlari
aylanish depolari

description: Ushbu maqolada temir yo‘l transportida shahar atrofi yo‘lovchi poyezdlari harakatlanish zonalarida to‘xtash punktlari sonini va masofasini qanday holatlarda oshirish, yoki kamaytirish masalalariga aniqlik kiritilgan. Umumiy harakatlanish masofasini inobatga olib shahar atrof yo‘lovchi poyezdlarining to‘xtash punktlari orasidagi optimal masofalarni aniqlashda matematik modellashtirish usulidan foydalanildi. To‘xtash punktlarini loyihalash me’zonlari ko‘rib chiqildi
title: Plattformökonomie im Handwerk
title: Entwicklungen, Chancen und Herausforderungen aus ökonomischer Perspektive
titleType: Subtitle
Creators: name: Alhusen, Harm
name: Bizer, Kilian
name: Dilekoglu, Kübra
name: Meub, Lukas
name: Proeger, Till
name: Thonipara, Anita
Publisher: name: Göttingen : ifh, Volkswirtschaftliches Institut für Mittelstand und Handwerk an der Universität Göttingen
Year: 2021
Subjects: Digitalisierung
Datennutzung
Handwerk
Plattformökonomie
zweiseitige Märkte

description: Das Entstehen der Plattformökonomie und die damit verbundene Konzentration von Datennutzung und -zugang sind zentrale Zukunftsherausforderungen für Handwerksunternehmen. Diese Studie untersucht die Entwicklungen der Plattformökonomie und deren ökonomische Auswirkungen für das Handwerk. Dafür ist die Studie in zwei Abschnitte gegliedert: Der erste Teil erläutert theoretische Grundlagen und Funktionsweisen der Plattformökonomie. Im zweiten Teil wird empirisch auf Basis von Experteninterviews die Entwicklung von Plattformökonomie und Datennutzung im Handwerk untersucht. Hierfür werden zunächst die aus Expertensicht derzeit wichtigsten Plattformen identifiziert und eine Zuordnung zu den verschiedenen Typen von Plattformen vorgenommen.
description: Göttinger Beiträge zur Handwerksforschung ; 57
TEXNOLOGIYA FANINING UZVIYLIK VA UZLUKSIZLIGINI TA’MINLASH VA TAKOMILLASHTIRISH OMILLARI
Creators: name: X. Muxamedova
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: ta’lim
uzluksiz ta’lim
uzviylik
texnologiya
dastur
ustaxona
metodik taʻminot
moddiy-texnik baza
elektron darslik
masofaviy taʻlim

description: Mavjud oliy taʻlim muassasalarida zamonaviy texnologiya fani yoʻnalishida oʻqituvchi pedagog-kadrlarni tayyorlash sifati bugungi kun talablariga mos kelmasligi texnologiya fanini oʻqitishni tubdan qayta koʻrib chiqish va zamon talabiga mos ravishda yangilashni taqazo etmoqda
PH-Pfaffian order in a translationally and rotationally invariant system
Creators: name: Sun, Chen
name: Ma, Ken K. W.
name: Feldman, D. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The PH-Pfaffian topological order has been proposed as a candidate order for the $ν=5/2$ quantum Hall effect. The PH-Pfaffian liquid is known to be the ground state in several coupled wire and coupled stripe constructions. No translationally and rotationally invariant models with the PH-Pfaffian ground state have been identified so far. By employing anyon condensation on top of a topological order, allowed in an isotropic system, we argue that the PH-Pfaffian order is possible in the presence of rotational and translational symmetries.
description: Supplemental Material added
SU(N) fundamental and adjoint confining strings
Creators: name: Antonov, Dmitri
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: String representations of the Wilson loop are constructed in the SU(N)-version of compact QED in three and four dimensions. This is done exactly in the case of the fundamental Wilson loop and in the large-N limit in the case of the adjoint Wilson loop. Using for concreteness the three-dimensional fundamental case, it is demonstrated how the resulting SU(N)-generalization of the so-called theory of confining strings can be obtained in various ways. In its weak-field limit (corresponding to the limit of low monopole densities), this theory enables one to fix the value of the string tension, which cannot be fixed when deduced from the mean magnetic field inside a flat contour (the derivation of this field is also presented). Moreover, the obtained theory enables one to find also the coupling constants of terms in the expansion of the nonlocal string effective action, which are higher in the derivatives than the Nambu-Goto term (some of these terms vanish at the flat surface). In the four-dimensional case with the theta-term, the critical values of the theta-parameter, at which the problem of crumpling of large world sheets might be solved, are found in both the fundamental case and in the large-N limit of the adjoint case. These values are only accessible provided the electric coupling constant is larger than a certain value, in accordance with the known fact that confinement in the four-dimensional compact QED holds in the strong-coupling regime.
description: 19 pages, no figures, new results and references are added
AN INVESTIGATION OF EDUCATIONAL ADMINISTRATIVE STYLE AND JOB SATISFACTIONOF ELEMENTARY SCHOOL PRINCIPALS
Creators: name: Arnold, Frederick Charles
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 2435.
THE EFFECT OF A RESPONSIVE EDUCATIONAL ENRICHMENT PROGRAM ON THE INTELLECTUAL DEVELOPMENT OF DISADVANTAGED TWO-YEAR-OLDS: A JAMAICAN CASE STUDY
Creators: name: Elson, Marjorie Frieder
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 2654.
THE EFFECT OF A RESPONSIVE EDUCATIONAL ENRICHMENT PROGRAM ON THE INTELLECTUAL DEVELOPMENT OF DISADVANTAGED TWO-YEAR-OLDS: A JAMAICAN CASE STUDY
Creators: name: Elson, Marjorie Frieder
Publisher: name: American University
Year: 2023

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 2654.
Small scale behavior of financial data
Creators: name: Nawroth, Andreas P.
name: Peinke, Joachim
Publisher: name: arXiv
Year: 2005
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: A new approach is presented to describe the change in the statistics of the log return distribution of financial data as a function of the timescale. To this purpose a measure is introduced, which quantifies the distance of a considered distribution to a reference distribution. The existence of a small timescale regime is demonstrated, which exhibits different properties compared to the normal timescale regime. This regime seems to be universal for individual stocks. It is shown that the existence of this small timescale regime is not dependent on the special choice of the distance measure or the reference distribution. These findings have important implications for risk analysis, in particular for the probability of extreme events.
description: 4 pages, 6 figures Calculations for the turbulence data sets were redone using the log return as the increment definition in order to provide better comparison to the results for financial assets
Radial Velocity Variations in Pulsating Ap Stars. II. 33 Librae
Creators: name: Mkrtichian, David E.
name: Hatzes, Artie P.
name: Kanaan, Antonio
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present precise relative radial velocity (RV) measurements for the rapidly oscillating Ap (roAp) star 33 Librae measured from high resolution data spanning the wavelength interval 5000--6200 A. We find that pulsational radial velocity amplitude determined over a broad wavelength range (~100 A) depends on the spectral region that is examined and can be as high as 60 m/s at 5600 A and as low as 7 m/s in the 5900 A region. RV measurements of individual spectral lines can show even higher RV amplitudes. The acoustic cross-sections of the atmosphere, i.e. the phase and amplitude of the pulsations, as a function of optical depth is found for spectral lines of Ca, Cr, Fe, La, Ce, Gd, Er and Nd. This analysis shows that pulsation phase is variable through the atmosphere and that Nd III lines pulsate almost 180 degrees out-of-phase with those of Nd II features and are formed significantly higher in the stellar atmosphere. This conclusively establishes the presence of at least one radial node to the pulsations in the upper stellar atmosphere. The histogram of pulsational phases for all individual spectral feature shows a bi-modal Gaussian distribution with 17% of the lines having a pulsational phase approximatels 165 degrees out-of-phase with most other spectral lines. This is also consistent with the presence of a radial node in the stellar atmosphere. The accumulation of phase due to a running wave component can explain the 165 degree phase difference as well as the broader width (by a factor of two) of one of the Gaussian components of the phase distribution.
description: 18 pages, 12 Figures, accepted by MNRAS
Analytic I-Love-C relations for realistic neutron stars
Creators: name: Jiang, Nan
name: Yagi, Kent
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recent observations of neutron stars (NS) with radio, X-rays and gravitational waves have begun to constrain the equation of state (EoS) for nuclear matter beyond the nuclear saturation density. To one's surprise, there exist approximate universal relations connecting certain bulk properties of NSs that are insensitive to the underlying EoS and having important applications on probing fundamental physics including nuclear and gravitational physics. To date, analytic works on universal relations for realistic NSs are lacking, which may lead to a better understanding of the origin of the universality. Here, we focus on the universal relations between the compactness(C), moment of inertia (I), and tidal deformability(related to the Love number), and derive analytic, approximate I-Love-C relations. To achieve this, we construct slowly-rotating/ tidally-deformed NS solutions analytically starting from an extended Tolman VII model that accurately describes non-rotating realistic NSs, allowing us to extract the moment of inertia and the tidal deformability on top of the compactness. We solve the field equations analytically by expanding them about the Newtonian limit and keeping up to 6th order in the stellar compactness. Based on these analytic solutions, we can mathematically demonstrate the O(10%) EoS variation in the I-C and Love-C relations and the O(1%) variation in the I-Love relation that have previously been found numerically. Our new analytic relations agree more accurately with numerical results for realistic NSs(especially the I-C and Love-C ones) than the analytic relations for constant density stars derived in previous work. Based on these analytic findings, we attribute a possible origin of the universality for the I-C and Love-C relations to the fact that the energy density of realistic NSs can be approximated as a quadratic function, as is the case for the Tolman VII solution.
description: Corrections on Fig.1 and Fig.2, in which the correct curve corresponding to constant density case(Love-C panel) replaced the wrong one
Doubly Special Relativity and de Sitter space
Creators: name: Kowalski-Glikman, Jerzy
name: Nowak, Sebastian
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we recall the construction of Doubly Special Relativity (DSR) as a theory with energy-momentum space being the four dimensional de Sitter space. Then the bases of the DSR theory can be understood as different coordinate systems on this space. We investigate the emerging geometrical picture of Doubly Special Relativity by presenting the basis independent features of DSR that include the non-commutative structure of space-time and the phase space algebra. Next we investigate the relation between our geometric formulation and the one based on quantum $κ$-deformations of the Poincaré algebra. Finally we re-derive the five-dimensional differential calculus using the geometric method, and use it to write down the deformed Klein-Gordon equation and to analyze its plane wave solutions.
description: 26 pages, one formula (67) corrected; some remarks added
ТЕХНОЛОГИЯ ФАНИДА XALQARO БАҲОЛАШ ДАСТУРЛАРИНИ АМАЛИЁТГА ТАДБИҚ ЭТИШНИНГ АҲАМИЯТИ
Creators: name: Л. Ш. Хайитова
name: Ж. Э. Пардабоев
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: халқаро тадқиқотлар
халқаро баҳолаш
тадқиқотчилик
кўникма
танқидий фикрлаш
ижодкорлик
PISA
XXI аср кўникмалари

description: Ушбу мақолада технология фанида халқаро баҳолаш дастурларини амалиётга тадбиқ этишнинг аҳамияти мазмуни, таълимнинг халқаро тадқиқотларига тайёргарлик кўриш ва ўтказиш юзасидан имкониятларни баҳолаш тўғрисида сўз юритилган
Ly$α$ forest power spectrum as an emerging window into the epoch of reionization and cosmic dawn
Creators: name: Montero-Camacho, Paulo
name: Mao, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Conventional wisdom was that thermal relics from the epoch of reionization (EOR) would vanish swiftly. Recently, however, it was shown that these relics can survive to lower redshifts ($z \sim 2$) than previously thought, due to gas at mean density being heated to $T \sim 3 \times 10^4$ K by reionization, which is inhomogeneous, and shocks. Given the high sensitivities of upcoming Ly$α$ forest surveys, this effect will be a novel broadband systematic for cosmological application. From the astrophysical point of view, however, the imprint of inhomogeneous reionization can shed light on the EOR and cosmic dawn. We utilize a hybrid method -- which includes two different simulation codes capable of handling the huge dynamical range -- to show the impact of patchy reionization on the Ly$α$ forest and its dependence on different astrophysical scenarios. We found statistically significant deviations in the 1D Ly$α$ power spectrum at $k = 0.14$ cMpc$^{-1}$ that range from $\sim 1\%$ at $z = 2$ up to almost $\sim 20\%$ at $z = 4$. The deviations in the 3D Ly$α$ power spectrum, at the same wavenumber, are large and range from a few per cent at $z = 2$ up to $\sim 50\%$ at $z = 4$, although these deviations ignore the effect of He II reionization and AGN feedback at $z<4$. By exploiting different $k$-dependence of power spectrum among various astrophysical scenarios, the effect of patchy reionization on the Ly$α$ forest power spectrum can open a new window into cosmic reionization and possibly cosmic dawn.
description: Updated to match accepted version for publication. 13 pages, 10 figures
МАГНИТ НАНОЗАРРАЛАРНИНГ БАЪЗИ ХОССАЛАРИ
Creators: name: К. Х. Маликов
name: У. Р. Рустамов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: нанозарра
наноматериал
магнетик
ферромагнит
магнитланиш эгрилиги
супер парамагнетизм
домен структура
магнит кластер
миктомагнетик
блоклаш температураси

description: Ушбу мақолада магнит нанозарраларнинг баъзи магнит хоссалари ва уларнинг қўлланилиши буйича шарҳлар берилган. Нанозарралар билан макроскопик материал магнит хоссалари фарқи тушунтирилган
THE IMPORTANCE OF HIGH FREQUENCY WORDS IN ENGLISH LEARNING
Creators: name: Sarvinoz Yashinovna Eshonkulova
Publisher: name: Academic research in educational sciences
Year: 2021

description: The article discusses the study of foreign languages English, which is one of the most pressing issues today. It is no secret that memorizing words is the most effective way to learn a foreign language. The scientific work is devoted to this area of language learning, and a new approach the most important of the new words being studied, that is, the study of only words with high frequency is most effective, a specific study was conducted. In determining the periodicity of new words, school English textbooks for grades 1-6 were selected as the object of research. Words with high periodicity are not only identified, but also the basis of the English-Uzbek dictionary of words with high periodicity
Maintenance of Diet and Activity Behaviors and Weight Loss After Intensive Lifestyle Intervention Scoping Review Protocol
Creators: name: Daly, Elyse Renee
name: Battalio, Sam
name: Spring, Bonnie
name: Wafford, Q. Eileen
name: Pfammatter, Angela Fidler
name: Jovanovic, Christine Ernestine Schaak
name: Alshurafa, Nabil
name: Kalam, Faiza
name: Stump, Tammy Kay
Publisher: name: DigitalHub. Galter Health Sciences Library & Learning Center
Year: 2022
Subjects: subject: Protocol
subject: Body Weight Maintenance
subject: Health Behavior
subject: Diet, Food, and Nutrition
subject: Exercise

description: Rationale: Although intensive lifestyle interventions tend to be successful at initiating weight loss, maintaining weight loss after withdrawal of intervention is more challenging. Also, it is unclear to what degree behavioral changes in dietary intake and physical activity that were made during weight loss initiation persist after treatment discontinuation and account for the observed variability in weight loss maintenance. A primary barrier to optimizing lifestyle interventions for long-term sustained improvement is the current lack of a coherent theoretical and methodological foundation for operationalizing maintenance. Indeed, there is variability in how researchers define, measure, and evaluate maintenance of both weight regulatory behaviors and weight loss following intervention. This variability in operationalizing maintenance could have significant implications for designing and optimizing interventions to achieve long-term maintenance. A synthesis of the available evidence on post-intervention behavioral weight loss maintenance is needed to lay a foundation that future researchers can use to appropriately design and implement interventions that produce meaningful, sustained healthful improvements in weight.
An iterative-bijective approach to generalizations of Schur's theorem
Creators: name: Corteel, Sylvie
name: Lovejoy, Jeremy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11P81; 05A17

description: We start with a bijective proof of Schur's theorem due to Alladi and Gordon and describe how a particular iteration of it leads to some very general theorems on colored partitions. These theorems imply a number of important results, including Schur's theorem, Bressoud's generalization of a theorem of Göllnitz, two of Andrews' generalizations of Schur's theorem, and the Andrews-Olsson identities.
description: 16 pages
AN ANALYSIS OF SELF-PACED AND INSTRUCTOR-PACED CONTINGENCIES, LOCUS-OF-CONTROL, AND ANXIETY IN A PERSONALIZED INSTRUCTION COURSE
Creators: name: Johnson, Fred Arnold
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 2656.
TEACHING ENGLISH IN THE SYSTEM OF PEDAGOGICAL EDUCATION CLUSTER
Creators: name: Khoshimova, Dilnoza Rikhsiboyevna
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: integration
teaching
EFL
English
methodology
pedagogy
learners

description: The conditions created and the rapid changes and developments taking place in the environment, but in this article as we work in part-time pedagogical work from foreign languages in primary school – we would like to share my thoughts on how to use English language teaching in conjunction with other subjects, i.e., the integration of disciplines, and how to easily explain English words to primary school students. The article highlights teaching English in several integrated ways
Scaling Ion Trap Quantum Computation through Fast Quantum Gates
Creators: name: Duan, L. -M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method to achieve scalable quantum computation based on fast quantum gates on an array of trapped ions, without the requirement of ion shuttling. Conditional quantum gates are obtained for any neighboring ions through spin-dependent acceleration of the ions from periodic photon kicks. The gates are shown to be robust to influence of all the other ions in the array and insensitive to the ions' temperature.
description: 4 pages, 3 figures
Physics of Skiing: The Ideal-Carving Equation and Its Applications
Creators: name: Jentschura, U. D.
name: Fahrbach, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Classical Physics (physics.class-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: Ideal carving occurs when a snowboarder or skier, equipped with a snowboard or carving skis, describes a perfect carved turn in which the edges of the ski alone, not the ski surface, describe the trajectory followed by the skier, without any slipping or skidding. In this article, we derive the "ideal-carving" equation which describes the physics of a carved turn under ideal conditions. The laws of Newtonian classical mechanics are applied. The parameters of the ideal-carving equation are the inclination of the ski slope, the acceleration of gravity, and the sidecut radius of the ski. The variables of the ideal-carving equation are the velocity of the skier, the angle between the trajectory of the skier and the horizontal, and the instantaneous curvature radius of the skier's trajectory. Relations between the slope inclination and the velocity range suited for nearly ideal carving are discussed, as well as implications for the design of carving skis and snowboards.
description: 13 pages, 9 figures, LaTeX; to appear in Can. J. Phys
Toward Predicting Success and Failure in CS2: A Mixed-Method Analysis
Creators: name: Layman, Lucas
name: Song, Yang
name: Guinn, Curry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Factors driving success and failure in CS1 are the subject of much study but less so for CS2. This paper investigates the transition from CS1 to CS2 in search of leading indicators of success in CS2. Both CS1 and CS2 at the University of North Carolina Wilmington (UNCW) are taught in Python with annual enrollments of 300 and 150 respectively. In this paper, we report on the following research questions: 1) Are CS1 grades indicators of CS2 grades? 2) Does a quantitative relationship exist between CS2 course grade and a modified version of the SCS1 concept inventory? 3) What are the most challenging aspects of CS2, and how well does CS1 prepare students for CS2 from the student's perspective? We provide a quantitative analysis of 2300 CS1 and CS2 course grades from 2013--2019. In Spring 2019, we administered a modified version of the SCS1 concept inventory to 44 students in the first week of CS2. Further, 69 students completed an exit questionnaire at the conclusion of CS2 to gain qualitative student feedback on their challenges in CS2 and on how well CS1 prepared them for CS2. We find that 56% of students' grades were lower in CS2 than CS1, 18% improved their grades, and 26% earned the same grade. Of the changes, 62% were within one grade point. We find a statistically significant correlation between the modified SCS1 score and CS2 grade points. Students identify linked lists and class/object concepts among the most challenging. Student feedback on CS2 challenges and the adequacy of their CS1 preparations identify possible avenues for improving the CS1-CS2 transition.
description: The definitive Version of Record was published in 2020 ACM Southeast Conference (ACMSE 2020), April 2-4, 2020, Tampa, FL, USA. 8 pages
Canonical singularities of orders over surfaces
Creators: name: Chan, Daniel
name: Hacking, Paul
name: Ingalls, Colin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We classify the possible ramification data and etale local structure of orders over surfaces with canonical singularities.
description: This contains major revisions, primarily to help introduce the reader to the minimal model program for orders on surfaces
PROTESTANT ANTECEDENTS OF THE LATIN AMERICAN THEOLOGY OF LIBERATION
Creators: name: Neely, Alan Preston
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 3037.
Planning And Design of a High-Rise Building With Seismic Detailing
Creators: name: Kawcher, Md Moinul Islam
Publisher: name: Zenodo
Year: 2025

description: This thesis paper discusses the planning and design of a high-rise building with a focus on seismic detailing. It presents a detailed analysis of structural considerations, materials, and engineering practices essential for ensuring the building's resilience to seismic events. The study highlights the importance of seismic codes, advanced engineering techniques, and structural design principles in creating high-rise buildings that are both functional and safe for occupants in earthquake-prone areas. The paper also explores the integration of sustainability in the design process, particularly how energy-efficient systems can be incorporated into seismic-resistant structures.
BEHAVIOR MODIFICATION CORRELATES OF A WEIGHT-CONTROL PROGRAM USING THE HORMONE HUMAN CHORIONIC GONADOTROPIN
Creators: name: Swindler, Peter Vaughn
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Source: Dissertation Abstracts International, Volume: 38-05, Section: A, page: 2677.
MPEC 2024-C119 : 2024 CH2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CH2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Non-Hermitian skin modes induced by on-site dissipations and chiral tunneling effect
Creators: name: Yi, Yifei
name: Yang, Zhesen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper, we study the conditions under which on-site dissipations can induce non-Hermitian skin modes in non-Hermitian systems. When the original Hermitian Hamiltonian has spinless time-reversal symmetry, it is impossible to have skin modes; on the other hand, if the Hermitian Hamiltonian has spinful time-reversal symmetry, skin modes can be induced by on-site dissipations under certain circumstance. As a concrete example, we employ the Rice-Mele model to illustrate our results. Furthermore, we predict that the skin modes can be detected by the chiral tunneling effect, that is, the tunneling favors the direction where the skin modes are localized. Our work reveals a no-go theorem for the emergence of skin modes, and paves the way for searching for quantum systems with skin modes and studying their novel physical responses.
description: 7 pages main text + 27 pages supplemental material, to appear in Physical Review Letters