cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin Pumping and Inverse Spin Hall Effect in Germanium
Creators: name: Rojas-Sánchez, J. -C.
name: Cubukcu, M.
name: Jain, A.
name: Vergnaud, C.
name: Portemont, C.
name: Ducruet, C.
name: Barski, A.
name: Marty, A.
name: Vila, L.
name: Attané, J. -P.
name: Augendre, E.
name: Desfonds, G.
name: Gambarelli, S.
name: Jaffrès, H.
name: George, J. -M.
name: Jamet, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured the inverse spin Hall effect (ISHE) in \textit{n}-Ge at room temperature. The spin current in germanium was generated by spin pumping from a CoFeB/MgO magnetic tunnel junction in order to prevent the impedance mismatch issue. A clear electromotive force was measured in Ge at the ferromagnetic resonance of CoFeB. The same study was then carried out on several test samples, in particular we have investigated the influence of the MgO tunnel barrier and sample annealing on the ISHE signal. First, the reference CoFeB/MgO bilayer grown on SiO$_{2}$ exhibits a clear electromotive force due to anisotropic magnetoresistance and anomalous Hall effect which is dominated by an asymmetric contribution with respect to the resonance field. We also found that the MgO tunnel barrier is essential to observe ISHE in Ge and that sample annealing systematically lead to an increase of the signal. We propose a theoretical model based on the presence of localized states at the interface between the MgO tunnel barrier and Ge to account for these observations. Finally, all of our results are fully consistent with the observation of ISHE in heavily doped $n$-Ge and we could estimate the spin Hall angle at room temperature to be $\approx$0.001.
description: 34 pages, 14 figures
Asymptotic behavior of decoherent and interacting quantum walks
Creators: name: Ahlbrecht, Andre
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Quantum walk
subject: decoherence
subject: interaction
subject: Quantenwalk
subject: Dekohärenz
subject: Wechselwirkung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
title: ERP συστήματα στον χώρο της υγείας
title: ERP for healthcare industry
titleType: AlternativeTitle
Creators: name: Πίπιδα, Ειρήνη Χρυσοβαλάντου
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Συστήματα επιχειρησιακών πόρων
subject: ERP συστήματα
subject: Νοσοκομείο
subject: Πληροφοριακό σύστημα νοσοκομείου

description: Η παρούσα διπλωματική εργασία έχει ως κύριο στόχο τη μελέτη των συστημάτων Διαχείρισης Επιχειρησιακών Πόρων (Enterprise Resource Planning) που έχουν ήδη εγκατασταθεί τόσο σε δημόσια όσο και σε ιδιωτικά νοσοκομεία της Αθήνας. Τα συστήματα ERP, αρχικά δημιουργήθηκαν για επιχειρήσεις, έχουν όμως επιτυχώς εγκατασταθεί στα νοσηλευτικά ιδρύματα, αποτελώντας ολοκληρωμένα πληροφοριακά συστήματα νοσοκομείων. Η χρήση των συστημάτων ERP στα νοσοκομεία συμβάλλει στη βελτίωση της αποτελεσματικότητας, προσφέροντας ολοκληρωμένη εποπτεία σε όλες τις διοικητικές και κλινικές δραστηριότητες ενός ιδρύματος υγειονομικής περίθαλψης. Βεβαίως, μία ουσιαστική προϋπόθεση για να επωφεληθεί ένας οργανισμός υγείας από ένα σύστημα ERP είναι η άρτια εκπαίδευση του προσωπικού του και η δυνατότητα του συστήματος να διατηρεί ασφαλή τα δεδομένα που συλλέγονται.
title: Secondary Mathematics Teachers’ Responses to Pivotal Teaching Moments
Creators: name: Dupree, Kami M.
Publisher: name: Utah State University
Year: 2019

description: This study used a multiple case study design to explore the occurrence of pivotal teaching moments, teachers’ responses to these moments, and teachers’ own perceptions of the impact of these moments on their own knowledge development. The participants were six practicing secondary mathematics teachers. The researcher collected data from teacher created lesson plan outlines, observations of the same lesson delivered to two different classes, participant interviews, and teacher reflection journals. The researcher reviewed the lesson plan outlines prior to observations to understand teachers’ anticipations. During observations, the researcher recorded observed pivotal teaching moments, corresponding teacher responses to these moments, and instructional changes between the two observed lessons. Interviews allowed the researcher to identify in-the-moment teacher thinking and teachers’ motivations for their responses. Teacher reflection journals provided insights related to teachers’ classroom actions and learning.

The results confirmed and built upon existing classifications of pivotal teaching moments and teachers’ responses, while also identifying seven themes related to teacher motivations for their responses. Teachers’ perceptions of changes in their own knowledge base occurred for their content knowledge as well as their pedagogical content knowledge. Future research should explore how pivotal teaching moments are created, how teacher-student interactions shape teacher knowledge development, and examine the role of teachers’ reflections about their practice in their knowledge development.
Spectropolarimetric diagnostics of unresolved magnetic fields in the quiet solar photosphere
Creators: name: Shchukina, Nataliya
name: Bueno, Javier Trujillo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A few years before the Hinode space telescope was launched, an investigation based on the Hanle effect in atomic and molecular lines indicated that the bulk of the quiet solar photosphere is significantly magnetized, due to the ubiquitous presence of an unresolved magnetic field with an average strength  = 130 G. It was pointed out also that this "hidden" field must be much stronger in the intergranular regions of solar surface convection than in the granular regions, and it was suggested that this unresolved magnetic field could perhaps provide the clue for understanding how the outer solar atmosphere is energized. In fact, the ensuing magnetic energy density is so significant that the energy flux estimated using the typical value of 1 km/s for the convective velocity (thinking in rising magnetic loops) or the Alfven speed (thinking in Alfven waves generated by magnetic reconnection) turns out to be substantially larger than that required to balance the chromospheric energy losses. Here we present a brief review of the research that led to such conclusions, with emphasis on a new three-dimensional radiative transfer investigation aimed at determining the magnetization of the quiet Sun photosphere from the Hanle effect in the Sr I 460,7 nm line and the Zeeman effect in FeI lines.
description: Invited talk in IAU Symposium 294 on Solar and Astrophysical Dynamos; IAU General Assembly, Beijing 2012
Automorphisms of irreducible symplectic manifolds
Creators: name: Joumaah, Malek
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Irreducible symplectic manifolds
subject: non-symplectic involutions
subject: automorphisms
subject: Irreduzible symplektische Mannigfaltigkeiten
subject: Automorphismen
subject: nicht-symplektische Involutionen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
title: Crypto-Jewish Identity in the Inquisition of Mexico City
Creators: name: Skinner, Suzanne E.
Publisher: name: Utah State University
Year: 2019

description: This thesis studies identity among a group of Roman Catholic converts and accused heretics in Mexico City, called Crypto-Jews. The areas of identity that were examined in depth were, religious identity, gender identity, and racial identity. The records that exist for Crypto-Jews in Mexico City are limited but can be found among the records of the Holy Office of the Inquisition.

In order to study the documents of the Office of the Inquisition in Mexico City, I had to travel to the University of California, Berkeley’s Bancroft Library. I was supported in this endeavor by the History Department at Utah State University during the Spring semester of 2017. While there, I found primary sources written by the Holy Office of the Inquisition that contained the Inquisition trial records of many accused Crypto-Jews. This thesis uses five Inquisition documents from the trials of Manuel de Lucena, Isabel de Carvajal, Leonor de Carvajal, Margarita Moreira, and Antonia Núñez. Other primary sources include a translated copy of Luis de Carvajal’s memoir.

Through the study of these Inquisition documents, I have concluded that Crypto-Jewish identity was an amalgam of many cultural influences including Spanish, colonial, Roman Catholic, Jewish, and early medieval. The combination of these cultural influences was processed by Crypto-Jews to form a unique identity. This identity was specific to the people whose records I was able to study and is a unique contribution to the historical study of Crypto-Jews.
Letter of attestation from Dilowa Hutukhtu regarding Reverend Lundukhdamba Jamco Namjil Dorje, English typewritten translation
Creators: name: Zhamsranzhav, B., Dilav Khutagt, 1884-1965
Publisher: name: Columbia University
Year: 2020
Subjects: Mongols
Lamas

description: Letter from Dilowa Hutkhtu attesting that Jamco Namjil accompanied him in 1939 when leaving Inner Mongolia for Tibet-- original letter written in Mongolian vertical script
Effect of uranium deficiency on normal and superconducting properties in unconventional superconductor UTe$_2$
Creators: name: Haga, Y.
name: Opletal, P.
name: Tokiwa, Y.
name: Yamamoto, E.
name: Tokunaga, Y.
name: Kambe, S.
name: Sakai, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of the unconventional superconductor UTe$_2$ have been grown in various conditions which result in different superconducting transition temperature as well as normal state properties. Stoichiometry of the samples has been characterized by the single-crystal X-ray crystallography and electron microprobe analyses. Superconducting samples are nearly stoichiometric within an experimental error of about 1 \%, while non-superconducting sample significantly deviates from the ideal composition. The superconducting UTe$_2$ showed that the large density of states was partially gapped in the normal state, while the non-superconducting sample is characterized by the relatively large electronic specific heat as reported previously.
description: 8 pages, 6 figures
Radiation from accelerated particles in relativistic jets with shocks, shear-flow, and reconnection
Creators: name: Nishikawa, K. -I.
name: Hardee, P.
name: Zhang, B.
name: Dutan, I.
name: Medvedev, M.
name: Choi, E. J.
name: Min, K. W.
name: Niemiec, J.
name: Mizuno, Y.
name: Nordlund, A.
name: Frederiksen, J. T.
name: Sol, H.
name: Pohl, M.
name: Hartmann, D. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have investigated particle acceleration and shock structure associated with an unmagnetized relativistic jet propagating into an unmagnetized plasma. Strong magnetic fields generated in the trailing jet shock lead to transverse deflection and acceleration of the electrons. We have self-consistently calculated the radiation from the electrons accelerated in the turbulent magnetic fields. We find that the synthetic spectra depend on the bulk Lorentz factor of the jet, the jet temperature, and the strength of the magnetic fields generated in the shock. We have also begun study of electron acceleration in the strong magnetic fields generated by kinetic shear (Kelvin-Helmholtz) instabilities. Our calculated spectra should lead to a better understanding of the complex time evolution and/or spectral structure from gamma-ray bursts, relativistic jets, and supernova remnants.
description: 6 pages, 4 figures, 2012 Fermi Symposium proceedings - eConf C121028
Behavioral responses to taxes : fiscal implications of tax range changes, their perception and tax privacy
Creators: name: Bob, Jonathan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Perceived tax burden
subject: tax evasion
subject: value added taxes
subject: Gefühlte Steuerbelastung
subject: Steuerhinterziehung
subject: Mehrwertsteuer
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
ПОТРЕБНОСТЬ В ВЫРАЩИВАНИИ ЛЕКАРСТВЕННЫХ РАСТЕНИЙ И ПУТИ УСТОЙЧИВОГО РАЗВИТИЯ СЕТИ
Creators: name: Мухаммадиева, Дилафруз
Publisher: name: Zenodo
Year: 2024

description: В статье освещается суть и необходимость выращивания лекарственных растений, основные проблемы отрасли и разрабатываются предложения по устойчивому развитию отрасли.
Boutet de Monvel's calculus via groupoid actions
Creators: name: Bohlen, Karsten
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Boutet de Monvel's calculus
subject: groupoid
subject: Lie manifold
subject: Boutet de Monvel Kalkül
subject: Gruppoid
subject: Lie Mannigfaltigkeit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
Recursive Least-Squares Estimator-Aided Online Learning for Visual Tracking
Creators: name: Gao, Jin
name: Lu, Yan
name: Qi, Xiaojuan
name: Kou, Yutong
name: Li, Bing
name: Li, Liang
name: Yu, Shan
name: Hu, Weiming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Tracking visual objects from a single initial exemplar in the testing phase has been broadly cast as a one-/few-shot problem, i.e., one-shot learning for initial adaptation and few-shot learning for online adaptation. The recent few-shot online adaptation methods incorporate the prior knowledge from large amounts of annotated training data via complex meta-learning optimization in the offline phase. This helps the online deep trackers to achieve fast adaptation and reduce overfitting risk in tracking. In this paper, we propose a simple yet effective recursive least-squares estimator-aided online learning approach for few-shot online adaptation without requiring offline training. It allows an in-built memory retention mechanism for the model to remember the knowledge about the object seen before, and thus the seen data can be safely removed from training. This also bears certain similarities to the emerging continual learning field in preventing catastrophic forgetting. This mechanism enables us to unveil the power of modern online deep trackers without incurring too much extra computational cost. We evaluate our approach based on two networks in the online learning families for tracking, i.e., multi-layer perceptrons in RT-MDNet and convolutional neural networks in DiMP. The consistent improvements on several challenging tracking benchmarks demonstrate its effectiveness and efficiency.
description: Accepted by TPAMI. Extended version of the RLS-RTMDNet tracker (CVPR2020)
Engineered microwave control for trapped ions
Creators: name: Wahnschaffe, Martina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Quantum information processing
subject: trapped and laser-cooled ions
subject: hyperfine qubits
subject: microstructures
subject: microwave near-fields
subject: Quanteninformation
subject: gefangene und lasergekühlte Ionen
subject: Mikrostrukturen
subject: Mikrowellen-Nahfelder
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
ELS-LEED study of collective electronic excitations on Ag surfaces and thin films
Creators: name: Moresco, Francesca
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Plasmon
subject: silver surfaces
subject: thin films
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Elucidation of transcription factor controlled development of dendritic cells
Creators: name: Rathinam, Chozhavendan
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Hematopoiesis
subject: dendritic cells
subject: transcription factors
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
En route to multi-bridged metallocenes
Creators: name: Garabatos-Perera, Jose Ramon
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Ferrocene
subject: ferrocenophanes
subject: triferrocenylmethane
subject: lithiation
subject: palladium
subject: cross-coupling
subject: asymmetric catalysis
subject: ligand design
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Path derivation for a wave scattered model to estimate height correlation function of rough surfaces
Creators: name: Zamani, M.
name: Fazeli, S. M.
name: Salami, M.
name: Farahani, S. Vasheghani
name: Jafari, G. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The long standing problem on finding the height correlation function is studied by the inverse scattering problem. We propose a new method in the frame work of Kirchhoff theory which we call "path derivation of scattered wave (PDSW)" in order to obtain an expression for direct measurements of the height correlation function. This would provide adequate insight to rough surfaces. The efficiency of this method is due to the fact that the height correlation function could be estimated directly by measurements of the scattered intensity on a suggested path. The model is tested numerically and an experimental setup is suggested.
description: 4 pages, 3 figures
Μελέτη σκοπιμότητας για την αδειοδότηση, εγκατάσταση και λειτουργία δύο αιολικών σταθμών με κοινό σημείο διασύνδεσης
Creators: name: Τζαμάκου, Θάλεια
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Ανανεώσιμες πηγές ενέργειας
subject: Αιολικός σταθμός
subject: Απολιγνιτοποίηση
subject: Μελέτη σκοπιμότητας

description: Στόχος της παρούσας εργασίας είναι να πραγματοποιηθεί προσέγγιση της μελέτης σκοπιμότητας έργων Ανανεώσιμων Πηγών Ενέργειας (ΑΠΕ) βασισμένη σε ρεαλιστικά δεδομένα της Αγοράς Ηλεκτρικής Ενέργειας και πιο συγκεκριμένα αφορά σε μελέτη σκοπιμότητα για Αιολικούς Σταθμούς. Ουσιαστικά η επένδυση για την οποία διενεργείτε η παρούσα μελέτη σκοπιμότητας διεξάγεται από τους Φορείς των έργων ΑΠΕ ώστε να διαπιστωθεί η βιωσιμότητα αυτής, υπό ποιες βασικές συνθήκες και με ποιες υποθέσεις θα είναι βιώσιμη και επικερδής. Δεδομένου πως τα εν λόγω έργα απαιτούν μια χρονοβόρα και επίπονη διαδικασία αδειοδότησης προκειμένου να οδηγηθούν στα στάδιο κατασκευής και εντέλει στη λειτουργία κρίνεται σκόπιμο να αναλυθεί αρχικά το νομοθετικό πλαίσιο και η αδειοδοτική διαδικασία, στη συνέχεια τα τεχνικά χαρακτηριστικά και τα επιμέρους έργα που συντελούν ένα αιολικό σταθμό παραγωγής ενέργειας και τέλος τα οικονομικά δεδομένα και οι οικονομίες κλίμακος που μπορούν να επιτευχθούν για από κοινού κατασκευή περισσότερων του ενός έργων. Τέλος, γίνεται οικονομοτεχνική ανάλυση που καταδεικνύει τη βιωσιμότητα και την κερδοφορία ή μη της επένδυσης.
Valuating Surface Surveillance Technology for Collaborative Multiple-Spot Control of Airport Departure Operations
Creators: name: Burgain, Pierrick
name: Kim, Sang Hyun
name: Feron, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Airport departure operations are a source of airline delays and passenger frustration. Excessive surface traffic is a cause of increased controller and pilot workload. It is also a source of increased emissions and delays, and does not yield improved runway throughput. Leveraging the extensive past research on airport departure management, this paper explores the environmental and safety benefits that improved surveillance technologies can bring in the context of gate- or spot-release strategies. The paper shows that improved surveillance technologies can yield 4% to 6% reduction of aircraft on taxiway, and therefore emissions, in addition to the savings currently observed by implementing threshold starategies under evaluation at Boston Logan Airport and other busy airports during congested periods. These calculated benefits contrast sharply with our previous work, which relied on simplified airport ramp areas with a single departure spot, and where fewer environmental and economic benefits of advanced surface surveillance systems could be established. Our work is illustrated by its application to New-York LaGuardia and Seattle Tacoma airports.
description: Submitted to IEEE Transactions on Intelligent Transportation Systems. arXiv admin note: substantial text overlap with arXiv:1102.2673
title: Методология комплексной технологической оптимизации параметров СВЧ-приборов на основе гетероструктур
Creators: name: ., А.Г. Гудков – д.т.н., профессор, кафедра «Технологии приборостроения», Московский государственный технический университет им. Н.Э. Баумана (Национальный исследовательский университет) E-mail: profgudkov@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Рассмотрена проблема снижения себестоимости и обеспечения высоких требований к параметрам СВЧ-приборов на основе гетероструктур, к которым следует отнести многоканальный многочастотный СВЧ-радиотермограф на основе монолитных ин-тегральных схем для нахождения 3D-распределения и динамики радиояркостной температуры в глубине тела человека. Раз-работаны принципы и методы комплексной технологической оптимизации устройств для приборов на основе гетероструктур. Предложена методология комплексной технологической оптимизации. Введена система целевых функций, основу которых составляет технологическая функция, учитывающая вероятность выхода годных параметров. Сформулирована система четырех принципов комплексной технологической оптимизации и разработаны обобщенные модели реализации этих принципов для выбранных объектов исследования, позволившие проводить оптимизацию устройств по критерию максимума вероятности выхода годных параметров назначения или минимума технологической себестоимости. Показана перспективность метода при создании СВЧ-приборов на основе гетероструктур.
Spatial, spin, and charge symmetry projections for a Fermi-Hubbard model on a quantum computer
Creators: name: Seki, Kazuhiro
name: Yunoki, Seiji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose an extended version of the symmetry-adapted variational-quantum-eigensolver (VQE) and apply it to a two-component Fermi-Hubbard model on a bipartite lattice. In the extended symmetry-adapted VQE method, the Rayleigh quotient for the Hamiltonian and a parametrized quantum state in a properly chosen subspace is minimized within the subspace and is optimized among the variational parameters implemented on a quantum circuit to obtain variationally the ground state and the ground-state energy. The corresponding energy derivative with respect to a variational parameter is expressed as a Hellmann-Feynman-type formula of a generalized eigenvalue problem in the subspace, which thus allows us to use the parameter-shift rules for its evaluation. The natural-gradient-descent method is also generalized to optimize variational parameters in a quantum-subspace-expansion approach. As a subspace for approximating the ground state of the Hamiltonian, we consider a Krylov subspace generated by the Hamiltonian and a symmetry-projected variational state, and therefore the approximated ground state can restore the Hamiltonian symmetry that is broken in the parametrized variational state prepared on a quantum circuit. We show that spatial symmetry operations for fermions in an occupation basis can be expressed as a product of the nearest-neighbor fermionic swap operations on a quantum circuit. We also describe how the spin and charge symmetry operations, i.e., rotations, can be implemented on a quantum circuit. By numerical simulations, we demonstrate that the spatial, spin, and charge symmetry projections can improve the accuracy of the parametrized variational state, which can be further improved systematically by expanding the Krylov subspace without increasing the number of variational parameters.
description: 36 pages, 21 figures
title: Межфазная энергия металлических наночастиц на границе с многоатомными спиртами
Creators: name: ., Л.П. Арефьева – к.ф-м.н., доцент, Донской государственный технический университет (г. Ростов-на-Дону) E-mail: Ludmilochka529@mail.ru  И.Г. Шебзухова – д.ф-м.н., профессор, Кабардино-Балкарский государственный университет им. Х.М. Бербекова (г. Нальчик) E-mail: Irina.Shebzukhova@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Разработан вариант электронно-статистического метода для расчета межфазной энергии системы «нанокристалл металла – полярная диэлектрическая пленка». Получено выражение для поляризационной поправки, обусловленной наличием во внешней области системы диэлектрической жидкости. Показано, что с ростом диэлектрической проницаемости величина поляризационного вклада быстро увеличивается по модулю. Выполнены расчеты межфазной энергии нанокристалла кобальта на границе раздела с полярными многоатомными спиртами. Установлено, что диэлектрическое покрытие снижает величину межфазной энергии, изменяет характер размерной и ориентационной зависимости.
Coherent sliding dynamics and spin motive force driven by crossed magnetic fields in chiral helimagnet
Creators: name: Kishine, Jun-ichiro
name: Bostrem, I. G.
name: Ovchinnikov, A. S.
name: Sinitsyn, Vl. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrated that the chiral soliton lattice formed out of a chiral helimagnet exhibits coherent sliding motion by applying a time-dependent magnetic field parallel to the helical axis, in addition to a static field perpendicular to the helical axis. To describe the coherent sliding, we use the collective coordinate method and numerical analysis. We also show that the time-dependent sliding velocity causes a time-varying Berry cap which causes the spin-motive-force. A salient feature of the chiral soliton lattice is appearance of the strongly amplified spin motive force which is directly proportional to the macroscopic number of solitons (magnetic kinks).
description: 13 pages, 13figures,accepted for publication in Physical Review B
Enhanced mobility awareness : a data-driven approach to analyze traffic under planned special event scenarios
Creators: name: Kwoczek, Simon
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Traffic prediction
subject: Planned special event
subject: Social media
subject: Verkehrsprognosen
subject: Veranstaltungen
subject: Soziale Medien
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Traffic disruptions impose societal costs of billions of dollars every year. A constant increase in mobility demand, combined with ongoing urbanization, exacerbates the problem. Since extensions of the infrastructure are for the most part no longer feasible, researchers are trying to find solutions to increase the efficiency of the road network usage. One key element to meeting that goal is to use smart prediction techniques on as many traffic-influencing factors as possible. With the availability of traffic datasets with high spatial and temporal resolutions, more and more data-driven solutions to predict the impact of these factors have been presented by the community. However, while the impacts of hazards, road accidents, and daily rush hour have been the subjects of intense study and analysis the specific impact of so-called planned special events on traffic remains mostly unexplored. Are the effects of upcoming concerts, sporting events, etc. predictable at all? This is the main question that we address in this thesis. We focus our analysis on three different aspects. First, we analyze the general characteristics of event-caused traffic disruptions around different venues in Germany. The results show, that the impact of events varies strongly, being highly affected by its venue location, the time of day, and the event category. In the second step, we analyze the spatial impact of events around different venues. This spatial impact describes a set of road segments, that people tend to use to get to and from the venue. To identify those preferred routes, we propose a classification-based technique that measures event influence for each road segment separately. The approach is based on a large scale analysis across many different venues in Germany. Results show impact zones around several soccer venues in Germany that we discuss in detail. In the third part of this thesis we analyze features from online sources (Twitter, Facebook, etc.) in terms of their explanatory power towards the expected event impact. We collect a large list of different information sources for major events in different venues. Based on that collection, we present prediction models for various measures of event impact. Our results show, that these approaches are capable to predict the severity of event impact under certain conditions, which allows decision makers to create traffic management strategies tailored to event caused traffic disruptions.
title: Влияние границ раздела пленка‒электрод на токи утечки в сегнетоэлектрических конденсаторных наноструктурах Au/PZT/Pt
Creators: name: ., А.Н. Антонович ‒ аспирант, МИРЭА ‒ Российский технологический университет (Москва) Е-mail: alexant@phys.msu.ru C.В. Пахомов ‒ аспирант, МИРЭА ‒ Российский технологический университет (Москва) Е-mail: 321ru@mail.ru А.А. Петрушин ‒ аспирант, МИРЭА ‒ Российский технологический университет (Москва) Е-mail: babaganusshh@gmail.com Ю.В. Подгорный ‒ к.т.н, вед. науч. сотрудник, МИРЭА ‒ Российский технологический университет (Москва) E-mail: podgsom_2004@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Представлены результаты экспериментальных исследований токов релаксации и стационарных вольт-амперных характеристик (ВАХ) тонкопленочных сегнетоэлектрических конденсаторных наноструктур Au/PZT/Pt. Методом наведенного тока исследованы локальные электрические поля у границ раздела металл/сегнетоэлектрик и определены электрофизические свойства интерфейсных слоев пленка/электрод. Установлен различный характер влияния интерфейсных контактов Au/PZT и PZT/Pt на характеристики стационарного тока утечки.
On the Chameleon Brans-Dicke Cosmology
Creators: name: Bisabr, Yousef
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a generalized Brans-Dicke model in which the scalar field has a potential function and is also allowed to couple non-minimally with the matter sector. We assume a power law form for the potential and the coupling functions as the inputs of the model and show that acceleration of the universe can be realized for a constrained range of exponent of the potential function. We also argue that this accelerating phase is consistent with a large and positive Brans-Dicke parameter. In our analysis, the potential plays a more important role with respect to the coupling function in dynamics of the universe as the latter does not contribute to any of the relations characterizing evolution of scale factor of the universe and the scalar field. However, we will show that the coupling function is closely related to magnitude and direction of the energy transfer between matter and the scale field. We use this fact and some thermodynamic aspects of the model to put some constraints on the coupling function. In particular, we argue that the second law of thermodynamics constrains direction of the overall energy transfer.
description: 9 pages, no figure
Engineering adaptive web applications
Creators: name: Dolog, Peter
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Domain engineering
subject: adaptive web applications
subject: conceptual modeling
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Entity linkage for heterogeneous, uncertain, and volatile data
Creators: name: Ioannou, Ekaterini
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Data integration
subject: entity linkage
subject: probabilistic linkage database
subject: Datenintegration
subject: Duplikaterkennung
subject: probabilistische Verlinkungsdatenbanken
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
title: Интеркалирование углеродных нанотрубок в процессе получения порошковых композиционных материалов на основе металлической матрицы
Creators: name: ., В.Н. Пасовец – к.т.н., доцент, Университет гражданской защиты МЧС Беларуси (г. Минск, Республика Беларусь) E-mail: pasovets_v@mail.ru В.А. Ковтун − д.т.н., профессор, Университет гражданской защиты МЧС Беларуси (г. Минск, Республика Беларусь) E-mail: vadimkov@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Представлены результаты исследования механизма заполнения внутренних полостей открытых углеродных нанотрубок (УНТ) жидкой фазой металла. Проведен анализ опубликованных результатов исследований по интеркалированию УНТ. Описан механизм интеркалирования УНТ при электроконтактном спекании порошковых композитов с металлической матрицей. Приведено условие интеркалирования жидкой фазы металла во внутреннюю полость УНТ при электроконтактном спекании порошковой системы. Произведен расчет величин параметров технологического воздействия.
Η επιρροή της ενεργειακής και κλιματικής κρίσης στην σημερινή επισιτιστική κρίση και τρόποι αντιμετώπισης
Creators: name: Παπαδόπουλος, Σωτήριος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Κλιματική κρίση
subject: Ενεργειακή κρίση
subject: Επισιτιστική κρίση

description: Η ενέργεια ανέκαθεν αποτελούσε μια δύναμη με ισχυρές επιρροές στην κοινωνική εξέλιξη και την ανθρώπινη ιστορία. Η ιστορία της κλιματικής αλλαγής έχει ακόμα μεγαλύτερο εύρος καθώς ταυτίζεται με την ιστορία της γης. Η εμφάνιση όμως του ανθρώπου και ιδιαίτερα η εντατικοποίηση των περιβαλλοντικών παρεμβολών των δραστηριοτήτων του επιταχύνουν τις αρνητικές κλιματικές μεταβολές μεγεθύνοντας ακόμα περισσότερο την δύναμη της κλιματικής αλλαγής για την ανθρώπινη εξέλιξη. Οι δυο αυτές δυνάμεις αμφότερες, μεμονωμένα ή συνδυαστικά και αλληλοτροφοδοτούμενες, δημιουργούν μια σύγχρονη παγκόσμια πληγή: την επισιτιστική κρίση η οποία επιδεινώνεται «κερδίζοντας» διαρκώς έδαφος. Βασικός πρωταγωνιστής της αρνητικής αυτής εξέλιξης είναι ο ανθρώπινος παράγοντας, οι επιλογές και οι δραστηριότητες του οποίου δημιούργησαν ένα σύνθετο και πολύπλευρο πρόβλημα. Η λύση και η αντιμετώπισή του πλέον είναι πολυπαραγοντική και απαιτεί παγκόσμια συνέργεια. Αν και η Παγκόσμια κοινότητα έχει δραστηριοποιηθεί, ιδιαίτερα τις τελευταίες δεκαετίες, εντούτοις τα προβλήματα «αντιστέκονται» συνεχίζοντας να απειλούν θέτοντας ζητήματα επιβίωσης ακόμα και ολόκληρης της ανθρωπότητας. Σκοπός της παρούσας διπλωματικής εργασίας είναι η παρουσίαση: ➢ της υφιστάμενης κατάστασης της ενεργειακής, της κλιματικής και της επισιτιστικής κρίσης που βιώνει σήμερα η ανθρωπότητα ➢ των παραγόντων εκείνων που επιδρούν στην εξέλιξη αυτών των κρίσεων ➢ των επιπτώσεων και των συνεπειών που επιφέρουν ➢ των αντιδράσεων της παγκόσμιας κοινότητας για την αντιμετώπισή τους μέσα από συνδυασμένες και συντονισμένες πολιτικές και πρακτικές. Η παρουσίαση αυτή γίνεται σε τρείς ενότητες. Στις πρώτες δύο αναλύονται οι δυνάμεις της ενεργειακής και κλιματικής κρίσης και οι τρόποι που η κάθε μία απ’ αυτές επιδρούν αρνητικά στην επισιτιστική ασφάλεια. Στην τρίτη ενότητα παρουσιάζονται οι παράγοντες που προσδιορίζουν την εξέλιξη της επισιτιστικής κρίσης και οι τρόποι αντίδρασης της παγκόσμιας κοινότητας και η σχετική εναρμόνιση της ελληνικής πολιτείας για τον περιορισμό των κινδύνων και των επιπτώσεων που προκαλεί. Τέλος, στην τέταρτη ενότητα, παρουσιάζονται τα συμπεράσματα της μελέτης αυτών των τριών κρίσεων όπου παρατίθεται μια συνολική αποτίμηση σχετικά με την πρόοδο κατάκτησης των στόχων που έχει θέσει η παγκόσμια κοινότητα.
Metamagnetic Transition in UCoAl Probed by Thermoelectricity Measurements
Creators: name: Palacio-Morales, A.
name: Pourret, A.
name: Knebel, G.
name: Combier, T.
name: Aoki, D.
name: Harima, H.
name: Flouquet, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report field and temperature dependent measurements of the thermoelectric power (TEP) and the Nernst effect in the itinerant metamagnet UCoAl. The magnetic field is applied along the easy magnetization c-axis in the hexagonal crystal structure. The metamagnetic transition from the paramagnetic phase at zero field to the field induced ferromagnetic (FM) state is of first order at low temperatures and becomes a broad crossover above the critical temperature $T^{\star}_{M} \sim 11$ K. The field-dependence of the TEP reveals that the effective mass of the hole carriers changes significantly at the metamagnetic transition. The TEP experiment reflects the existence of different carrier types in good agreement with band structure calculations and previous Hall effect experiments. According to the temperature dependence of the TEP, no Fermi liquid behavior appears in the paramagnetic state down to 150 mK, but is achieved only in the field induced ferromagnetic state.
description: 5 pages, 4 figures
title: Влияние режимов формирования и условий термообработки на фазовый состав и структуру кремний-углеродных покрытий, осаждаемых ионно-лучевым распылением
Creators: name: ., А.С. Руденков - к.т.н., вед. науч. сотрудник, Международная Китайско-Белорусская лаборатория вакуумно-плазменных технологий; Гомельский государственный университет им. Ф. Скорины (Республика Беларусь) E-mail: arudenkov05@gmail.com А.В. Рогачев - чл.-корр. НАНБ, д.х.н., профессор, директор Научно-исследовательского физико-химического института им. Л.Я. Карпова (Москва); Международная Китайско-Белорусская лаборатория вакуумно-плазменных технологий; Гомельский государственный университет им. Ф. Скорины (Республика Беларусь)  E-mail: rogachevav@mail.ru А.Н. Купо - к.т.н., начальник центра, Гомельский государственный университет им. Ф. Скорины (Республика Беларусь)  E-mail: kupo@gsu.by С.М. Завадский – к.т.н., начальник Центра 9.1, Государственный университет информатики и радиоэлектроники (г. Минск, Республика Беларусь) E-mail: szavad@bsuir.by Д.А. Голосов – к.т.н., вед. науч. сотрудник Центра 9.1, Государственный университет информатики и радиоэлектроники (г. Минск, Республика Беларусь) П.А. Лучников - науч. сотрудник, МИРЭА ‒ Российский технологический университет (Москва) Е-mail: xamdex@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Исследовано влияние режимов формирования и термообработки кремний-углеродных покрытий, осаждаемых путем ионно-лучевого распыления карбида кремния, на их морфологию, химический и фазовый состав. Установлено, что увеличение мощности ионного-источника с 432 Вт до 738 Вт ведет к уменьшению фазового соотношения sp3/sp2 в 1,7 раза и увеличению соотношения Si-C/Si-O связей в 1,9 раза. Показано, что легирование углеродных покрытий карбидом кремния способствует увеличению их термостойкости.
Environmental and engineering geophysical studies for sinkhole problems using seismic reflection, refraction tomography, electrical resistivity imaging, and joint inversions
Creators: name: Gebregziabher Gared, Berhanu
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Sinkholes
subject: geophysics
subject: Germany
subject: Erdfälle
subject: Geophysik
subject: Deutschland
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
title: Проблемы систем металлизации в суб-10 нм-технологиях интегральных микросхем
Creators: name: ., C.В. Пахомов ‒ аспирант, МИРЭА ‒ Российский технологический университет (Москва) Е-mail: 321ru@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Рассмотрены особенности формирования многоуровневых систем металлизации в технологиях интегральных микросхем при уменьшении минимальных топологических размеров до 10 нм и менее, включая технологические процессы, материалы и моделирование. Показано, что с уменьшением размеров медных проводников при реализации суб-10 нм технологий наблюдается значительный рост их сопротивления, обусловленный рассеянием носителей на поверхностях и границах раздела кристаллитов. В этой связи в индустрии рассмотрены альтернативные материалы проводников – Co и Ru, обладающие меньшей длинной свободного пробега и стойкостью к электромиграции.
Einfluss elektromagnetisch absorbierender Folien auf Transferpfade in Luftfahrzeugen
Creators: name: Nunes, Rafael
name: Schüür, Jens
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Folie
subject: Kabine
subject: Sendeantenne
subject: Flugzeugantenne
subject: Navigationssystem
subject: Flugzeug
subject: Kommunikationssystem
subject: Luftfahrzeug
subject: Cockpit
subject: Flugzeugrumpf
subject: Koppelpunkt
subject: Verbundwerkstoff
subject: Absorberfolie
subject: Übertragungsmessung
subject: Flugzeugkabine
subject: Zusatzdämpfung
subject: Flugzeugtür
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In diesem Beitrag wird gezeigt, wie absorbierende Materialien in der Kabine eines Kurzstreckenflugzeuges auf den Transferpfad von einer Sendeantenne zu Navigations- und Kommunikationssystemen sowie zu einer Referenzantenne wirken. Aus dem Vergleich von Übertragungsmessungen zwischen zwei gleichen Antennen innerhalb der Flugzeugkabine lässt sich ein Einfluss der Absorberfolien für Entfernungen größer als 1m gut erkennen. Die Reduktion des Transferpfades, die durch Absorberfolien bewirkt wird, hängt stark von der Position der Sendeantenne in der Kabine ab. Bei einer alleinigen Auskleidung der Kabinendecke mit Folien nimmt der maximale Transferpfad um maximal 8 dB ab. Im vorderen Teil des Flugzeuges ist diese Reduktion kleiner. Bei 50% kumulativer Wahrscheinlichkeit beträgt die Zusatzdämpfung, die durch Folien an der Decke erzielt wird, 5 dB bei einer Very High Frequency (Kommunikation) - Flugzeugantenne (VHF 1) und 3 dB bei einer Traffic Collision Acoidance System - Flugzeugantenne (TCAS). Bei der zusätzlichen Auskleidung von Auskoppelstellen in der Flugzeughülle (Flugzeugtüren bei tiefen Frequenzen und Kabinenfenstern bei höheren Frequenzen) nimmt der Transferpfad weiter ab. Im Vergleich mit der Konfiguration ohne Folien verringert sich der Transferpfad im mittleren Wahrscheinlichkeitsbereich um 9 dB bei VHF 1 und 6 dB bei TCAS. Die Analyse der Messungen zur Distance Measuring Equipment-Antenne zeigt, dass die Flugzeugtüren auch im GHz-Bereich bei der Kopplung nach draußen relevant sind. Bei der Aussendung im Cockpit tragen zusätzlich die Cockpitfenster wesentlich zur Kopplung bei. Die Integration absorbierender Materialien in die Kabinenisolierung wirkt im Wesentlichen auf den Anteil reflektierter Energie in der Kabine. Bei aus Verbundwerkstoffen hergestellten Luftfahrzeugen könnten absorbierende Materialien die Kopplung zu Navigations- und Kommunikationssystemen noch stärker beeinflussen. Abhängig von der Strukturkomposition des Flugzeugrumpfes könnte die grundsätzliche Abschirmung der Kabine mit zusätzlichen Absorberfolien erhöht werden, wobei die Fenster und Türen als Koppelstellen unverändert erhalten bleiben.
Πράσινο επιχειρείν : η περίπτωση των επιχειρήσεων παροχής υπηρεσιών εστίασης
Creators: name: Σπεντζικοπούλου, Φωτεινή
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Βιώσιμη ανάπτυξη
subject: Πράσινο επιχειρείν
subject: Καταστήματα εστίασης

description: Η παρούσα εργασία διερευνά τις διάφορες προκλήσεις και τα εμπόδια που αντιμετωπίζουν τα καταστήματα εστίασης για την επίτευξη της βιώσιμης ανάπτυξης. Υπάρχουν αρκετές προκλήσεις που πρέπει να ξεπεραστούν, συμπεριλαμβανομένων των οικονομικών περιορισμών, της μειωμένης πρόσβασης σε βιώσιμα προϊόντα και υπηρεσίες και ρυθμιστικούς φραγμούς και περιορισμούς. Η αντίσταση στην αλλαγή και η έλλειψη ευαισθητοποίησης και κατάρτισης είναι επίσης σημαντικά εμπόδια που πρέπει να αντιμετωπιστούν. Μια μελέτη περίπτωσης μιας εταιρείας catering υπογραμμίζει την πρακτική εφαρμογή αυτών των αρχών σε ένα πραγματικό περιβάλλον. Η μελέτη καταλήγει στο συμπέρασμα ότι απαιτείται μια ολιστική και προληπτική προσέγγιση για την επίτευξη βιώσιμης ανάπτυξης στον κλάδο της εστίασης και ότι η επιτυχής εφαρμογή βιώσιμων πρακτικών απαιτεί συνεχείς επενδύσεις, εκπαίδευση και συνεργασία μεταξύ των ενδιαφερομένων.
Impact of Gate Assignment on Gate-Holding Departure Control Strategies
Creators: name: Kim, Sang Hyun
name: Feron, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Gate holding reduces congestion by reducing the number of aircraft present on the airport surface at any time, while not starving the runway. Because some departing flights are held at gates, there is a possibility that arriving flights cannot access the gates and have to wait until the gates are cleared. This is called a gate conflict. Robust gate assignment is an assignment that minimizes gate conflicts by assigning gates to aircraft to maximize the time gap between two consecutive flights at the same gate; it makes gate assignment robust, but passengers may walk longer to transfer flights. In order to simulate the airport departure process, a queuing model is introduced. The model is calibrated and validated with actual data from New York La Guardia Airport (LGA) and a U.S. hub airport. Then, the model simulates the airport departure process with the current gate assignment and a robust gate assignment to assess the impact of gate assignment on gate-holding departure control. The results show that the robust gate assignment reduces the number of gate conflicts caused by gate holding compared to the current gate assignment. Therefore, robust gate assignment can be combined with gate-holding departure control to improve operations at congested airports with limited gate resources.
description: Submitted to IEEE Transactions on Intelligent Transportation Systems
Environmental and agronomic effects on phyllosphere microbiology and the persistence of E. coli O157:H7 during the cultivation of leafy vegetables
Creators: name: Hartmann, Rahel
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Food safety
subject: leafy vegetables
subject: phyllosphere
subject: Blattgemüse
subject: Lebensmittelsicherheit
subject: Phyllosphäre
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]