cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Character expansion method for supergroups and extended superversions of the Leutwyler-Smilga and Berezin-Karpelevich integrals
Creators: name: Lehner, C.
name: Wettig, T.
name: Guhr, T.
name: Wei, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce an extension of the character expansion method to the case of supergroups. This method allows us to calculate a superversion of the Leutwyler-Smilga integral which, to the best of our knowledge, has not been calculated before. We also use the method to generalize a previously calculated superversion of the Berezin-Karpelevich integral. Our character expansion method should also allow for the calculation of other supergroup integrals.
description: 18 pages, 2 figures; added acknowledgment; added appendices, minor changes, as published in J. Math. Phys.
Memory in Processing Relative Clauses (Frizelle & Fletcher, 2015)
Creators: name: Frizelle, Pauline
name: Fletcher, Paul
Publisher: name: ASHA journals
Year: 2021
Subjects: Language

description: Purpose: This study investigated the relationship between 2 components of memory—phonological short-term memory (pSTM) and working memory (WM)—and the control of relative clause constructions in children with specific language impairment (SLI).Method: Children with SLI and 2 control groups—an age-matched and a younger group of children with typical development—repeated sentences, including relative clauses, representing 5 syntactic roles and 2 levels of matrix clause complexity. The Working Memory Test Battery for Children was administered.Results: All 3 groups showed significant associations between pSTM and both types of matrix clause construction. For children with SLI, significant associations emerged between (a) WM and more complex matrix clause constructions, (b) WM and relative clauses including a range of syntactic roles, and (c) pSTM and the least difficult syntactic role. In contrast, the age-matched control group could repeat almost all syntactic roles without invoking the use of either memory component.Conclusions: The role of pSTM and WM in the production of relative clauses by children with SLI is influenced by the degree of difficulty of the structure to be recalled. In therapy, the effect of WM limitations can be minimized by approaching each structure within the context of a simple matrix clause.
Real-time Non-line-of-Sight imaging of dynamic scenes
Creators: name: Nam, Ji Hyun
name: Brandt, Eric
name: Bauer, Sebastian
name: Liu, Xiaochun
name: Sifakis, Eftychios
name: Velten, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Non-Line-of-Sight (NLOS) imaging aims at recovering the 3D geometry of objects that are hidden from the direct line of sight. In the past, this method has suffered from the weak available multibounce signal limiting scene size, capture speed, and reconstruction quality. While algorithms capable of reconstructing scenes at several frames per second have been demonstrated, real-time NLOS video has only been demonstrated for retro-reflective objects where the NLOS signal strength is enhanced by 4 orders of magnitude or more. Furthermore, it has also been noted that the signal-to-noise ratio of reconstructions in NLOS methods drops quickly with distance and past reconstructions, therefore, have been limited to small scenes with depths of few meters. Actual models of noise and resolution in the scene have been simplistic, ignoring many of the complexities of the problem. We show that SPAD (Single-Photon Avalanche Diode) array detectors with a total of just 28 pixels combined with a specifically extended Phasor Field reconstruction algorithm can reconstruct live real-time videos of non-retro-reflective NLOS scenes. We provide an analysis of the Signal-to-Noise-Ratio (SNR) of our reconstructions and show that for our method it is possible to reconstruct the scene such that SNR, motion blur, angular resolution, and depth resolution are all independent of scene size suggesting that reconstruction of very large scenes may be possible. In the future, the light efficiency for NLOS imaging systems can be improved further by adding more pixels to the sensor array.
Gauged Supergravities, Tensor Hierarchies, and M-Theory
Creators: name: de Wit, Bernard
name: Nicolai, Hermann
name: Samtleben, Henning
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Deformations of maximal supergravity theories induced by gauging non-abelian subgroups of the duality group reveal the presence of charged M-theory degrees of freedom that are not necessarily contained in supergravity. The relation with M-theory degrees of freedom is confirmed by the representation assignments under the duality group of the gauge charges and the ensuing vector and tensor gauge fields. The underlying hierarchy of these gauge fields is required for consistency of general gaugings. As an example gauged maximal supergravity in three space-time dimensions is presented in a version where all possible tensor fields appear.
description: 32 pages; minor text changes and a few additional references
СВОЕОБРАЗИЕ СИНТЕЗА ТРАДИЦИЙ В ХУДОЖЕСТВЕННОЙ КЕРАМИКЕ ЭПОХИ ТЕМУРИДОВ.
Creators: name: Бахриева, Шахло
Publisher: name: Zenodo
Year: 2024

description: Период Темуридов ознаменовался небывалым подъемом во всех областях культуры и искусства. Развитие керамики также было отмечено напряженными поисками и поразительными достижениями. Крупнейшим ведущим центром керамического производства в эпоху Темуридов был Самарканд, вместе с тем близкую по стилю самаркандской керамике продукцию производили в Ташкенте, Бухаре, Шахрисабзе, Мерве, Нисе.
Streptomyces aquilus Li, Guo, Wang, Wang, Zhao & Gao, 2020, SP. NOV.
Creators: name: Li, Kaiqin
name: Guo, Yihui
name: Wang, Junzhen
name: Wang, Zhiyong
name: Zhao, Jiarong
name: Gao, Jian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Bacteria
Actinobacteria
Actinobacteridae
Actinomycetales
Streptomycetaceae
Streptomyces
Streptomyces aquilus

description: DESCRIPTION OF STREPTOMYCES AQUILUS SP. NOV.
 Streptomyces aquilus sp. nov. (a'qui.lus. L. masc. adj. aquilus brown; referring to the ability of the organism to produce brown nutrient hyphae).
 Aerobic, Gram-positive actinobacterium; forms welldeveloped branched aerial mycelium. Produces cylindrical and smooth-surfaced spores arranged in straight chains. The colour of the aerial mycelium is white and the colour of the substrate mycelium is light yellow to brown on ISP (2–7) media. No distinct soluble pigment is produced on tested media. Grows well on ISP (2–7) media. Growth occurs at pH 5.0–12.0, 10–45 °C and with 0–7% NaCl (w/v). Fructose, D-galactose, D-glucose, mannitol, raffinose, ribose and sucrose can be used as sole carbon sources for growth. As a nitrogen source, it utilizes arginine, asparagine, L-cysteine, L-histidine, L-threonine, methionine and tyrosine. Starch hydrolysis, H 2 S production, nitrate reduction, milk coagulation and milk peptonization, gelatin liquefaction and tweens (20, 40, 60 and 80) degradation are positive. Resistant to the following antibiotics: ampicillin, carbenicillin, cefoperazone, ceftazidime, clindamycin, norfloxacin, oxacillin, penicillin and vancomycin. The cell wall contains alanine, asparagine, glutamate, glycine and LL-DAP. Whole-cell sugars are glucose, mannose and xylose. The predominant cellular fatty acids are C 16:1 ω9 c, iso-C 16:0 and C 16:0. The predominant menaquinones are MK-9(H 8), MK-9(H 2), MK-9 and MK-9(H 6). The polar lipids contain phosphatidylethanolamine, diphosphatidylglycerol, phosphotidylinositol and phosphatidylinositol mannosides.
 The type strain is GGCR-6 T (= CICC 11055 T = JCM 33584 T), which was isolated from the healthy leaves of a medicinal plant, Xanthium sibiricum, collected from the botanical garden of Hunan University of Science and Technology in Hunan province, PR China. The G+C content of the genomic DNA of the type strain is 70.9 mol%. The GenBank/EMBL/ DDBJ accession number for the 16S rRNA gene sequence of GGCR-6 T is MH718844. The whole-genome shotgun project has been deposited at DDBJ/ENA/GenBank under the accession number CP034463. The version described in this paper is version CP034463.1.
description: Published as part of Li, Kaiqin, Guo, Yihui, Wang, Junzhen, Wang, Zhiyong, Zhao, Jiarong & Gao, Jian, 2020, Streptomyces aquilus sp. nov., a novel actinomycete isolated from a Chinese medicinal plant, pp. 1912-1917 in International Journal of Systematic and Evolutionary Microbiology 70 (3) on page 1916, DOI: 10.1099/ijsem.0.003995, http://zenodo.org/record/3745014
title: Βιομηχανία της μόδας, οι επιπτώσεις στο περιβάλλον
title: The fashion industry and its environmental impacts
titleType: AlternativeTitle
Creators: name: Πιέρρου, Ουρανία
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Μόδα
subject: Περιβάλλον
subject: Επιπτώσεις
subject: Αντίκτυπο
subject: Κατανάλωση

description: Η βιομηχανία της Μόδας είναι ύψιστης σημασίας για την ανθρώπινη ζωή σήμερα για λόγους πρακτικούς αλλά και κοινωνικούς. Καθώς ο αριθμός των ανθρώπων αυξάνεται συνεχώς και με το ένδυμα να θεωρείται μέσο κοινωνικής επίδειξης, είναι σημαντικό να αναλογιστούμε πόσο επιβαρύνουμε τον πλανήτη με τις παραγωγικές διαδικασίες του ρουχισμού και να λάβουμε τα απαραίτητα μέτρα ώστε να μπορέσουν να υλοποιηθούν οι παγκόσμιες δεσμεύσεις που έχουν δρομολογηθεί για την επίτευξη των βιώσιμων στόχων των Ηνωμένων Εθνών. Η Μόδα είναι μια βιομηχανία εκατομμυρίων και στην αλυσίδα αξίας για την κατασκευή ενός ρούχου μεσολαβούν πολλά στάδια, με τις έως σήμερα τεχνικές παραγωγής να αποδεικνύονται καταστροφικές για την ατμόσφαιρα, τη γεωργία, τον υδροφόρο ορίζοντα, τα δάση, την κτηνοτροφία αλλά και την ανθρώπινη υγεία. Η βιωσιμότητα και η κυκλική οικονομία είναι οι αρχές για την νέα βιομηχανία της Μόδας, με γνώμονα το καλό του πλανήτη.
Saturation properties of nuclear matter in a relativistic mean field model constrained by the quark dynamics
Creators: name: Huguet, R.
name: Caillon, J. C.
name: Labarsouque, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have built an effective Walecka-type hadronic Lagrangian in which the hadron masses and the density dependence of the coupling constants are deduced from the quark dynamics using a Nambu-Jona-Lasinio model. In order to stabilize nuclear matter an eight-quark term has been included. The parameters of this Nambu-Jona-Lasinio model have been determined using the meson properties in the vacuum but also in the medium through the omega meson mass in nuclei measured by the TAPS collaboration. Realistic properties of nuclear matter have been obtained.
description: 14 pages, 2 figures, submitted to Nuclear Physics A
The structure of weak shocks in quantum plasmas
Creators: name: Bychkov, Vitaly
name: Modestov, Mikhail
name: Marklund, Mattias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The structure of a weak shock in a quantum plasma is studied, taking into account both dissipation terms due to thermal conduction and dispersive quantum terms due to the Bohm potential. Unlike quantum systems without dissipations, even a small thermal conduction may lead to a stationary shock structure. In the limit of zero quantum effects, the monotonic Burgers solution for the weak shock is recovered. Still, even small quantum terms make the structure non-monotonic with the shock driving a train of oscillations into the initial plasma. The oscillations propagate together with the shock. The oscillations become stronger as the role of Bohm potential increases in comparison with thermal conduction. The results could be of importance for laser-plasma interactions, such as inertial confinement fusion plasmas, and in astrophysical environments, as well as in condensed matter systems.
description: 13 pages, 4 figures, version to appear in Physics of Plasmas
TA'LIMDA EMOTSANAL BARQARORLIK O'QITUVCHI VA O'QUVCHI O'RTASIDAGI MUNOSABATLAR
Creators: name: Dilshodova Shaxzoda Sherzodovna
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Ushbu maqolada ustoz va o‘quvchi o‘rtasidagi munosabatlarning ta’lim jarayonidagi o‘rni, pedagogik va psixologik ahamiyati tahlil etiladi. Ustozning nafaqat bilim beruvchi, balki tarbiyachi, motivator va psixolog sifatidagi roli yoritiladi. O‘quvchilarning yoshiga xos emotsional va psixologik o‘zgarishlari tahlil qilinib, bu jarayonda ustozning hissasi muhim ekanligi ta’kidlanadi. Shuningdek, ta’lim jarayonida ustoz va o‘quvchi o‘rtasidagi manfaatlarga asoslanmagan, ishonchli va mustahkam munosabatlarning zarurligi asoslanadi. Maqolada ustozning faqat ta’lim muassasasida emas, balki jamiyat taraqqiyotidagi o‘rni ham yoritilgan.
Η αγορά των κρυπτονομισμάτων
Creators: name: Γιακουμόπουλος, Αναστάσιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Κρυπτονομίσματα

description: Με την πάροδο των ετών όλο και περισσότερο ακούγεται ο όρος «κρυπτονομίσματα». Ο στόχος και η συμβολή αυτής της διατριβής είναι να δώσει στον αναγνώστη την κατάλληλη γνώση για το τι είναι η αγορά των Κρυπτονομισμάτων και τι είναι τα κρυπτονομίσματα με πολύ απλά λόγια. Ξεκινώντας από την δημιουργία τους και φτάνοντας μέχρι το στάδιο αποτυχίας τους. Ιδιαίτερο ενδιαφέρον παρουσιάζουν τα πολλά χαρακτηριστικά που κατέχουν και οι πολλές κατηγορίες που τα διακρίνουν. Επιπλέον αυτή η διατριβή φιλοδοξεί να εξηγήσει στον αναγνώστη τον τρόπο λειτουργίας των Κρυπτονομισμάτων μέσω της ανάλυσης της τεχνολογίας Blockchain, εξηγώντας τον τρόπο λειτουργίας της τεχνολογίας, την συνεισφορά των χρηστών σε αυτήν αλλά και τα πεδία εφαρμογής της πέραν της αγοράς Κρυπτονομισμάτων. Στην συνέχεια αναλύεται η πορεία αλλά και η κυριαρχία του κύριου εκπρόσωπου των Κρυπτονομισμάτων έναντι των υπολοίπων, του Bitcoin. Εν κατακλείδι, εξηγούνται διάφοροι τρόποι συναλλαγών στα κρυπτονομίσματα, δίνοντας έτσι στον αναγνώστη την γνώση για το τρόπο αλλά και το μέρος για να αγοράζει και να πουλάει αυτά τα ψηφιακά περιουσιακά στοιχεία που φαίνεται ότι είναι απαραίτητα σε ένα ολιστικό χαρτοφυλάκιο .
Collective excitations in electron-hole bilayers
Creators: name: Kalman, Gabor J
name: Hartmann, Peter
name: Donko, Zoltan
name: Golden, Kenneth I
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report a combined analytic and Molecular Dynamics analysis of the collective mode spectrum of an electron-hole (bipolar) bilayer in the strong coupling quasi-classical limit. A robust, isotropic energy gap is identified in the out-of-phase spectra, generated by the combined effect of correlations and of the excitation of the bound dipoles; the in-phase spectra exhibit a correlation governed acoustic dispersion for the longitudinal and transverse modes. Strong nonlinear generation of higher harmonics of the fundamental dipole oscillation frequency and the transfer of harmonics between different modes is observed. The mode dispersions in the liquid state are compared with the phonon spectrum in the crystalline solid phase, reinforcing a coherent physical picture.
description: 4 pages, 5 figures
Causal Factors, Benefits and Challenges of Test-Driven Development: Practitioner Perceptions
Creators: name: Buchan, Jim
name: Li, Ling
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This report describes the experiences of one organization's adoption of Test Driven Development (TDD) practices as part of a medium-term software project employing Extreme Programming as a methodology. Three years into this project the team's TDD experiences are compared with their non-TDD experiences on other ongoing projects. The perceptions of the benefits and challenges of using TDD in this context are gathered through five semi-structured interviews with key team members. Their experiences indicate that use of TDD has generally been positive and the reasons for this are explored to deepen the understanding of TDD practice and its effects on code quality, application quality and development productivity. Lessons learned are identified to aid others with the adoption and implementation of TDD practices, and some potential further research areas are suggested.
description: Conference, 10 pages, 2 figures
Supersymmetric Barotropic FRW Model and Dark Energy
Creators: name: Rosales, J. J.
name: Tkach, V. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using the superfield approach we construct the $n=2$ supersymmetric lagrangian for the FRW Universe with barotropic perfect fluid as matter field. The obtained supersymmetric algebra allowed us to take the square root of the Wheeler-DeWitt equation and solve the corresponding quantum constraint. This model leads to the relation between the vacuum energy density and the energy density of the dust matter.
description: 11 pages, minor corrections, published version
Correlator of Fundamental and Anti-symmetric Wilson Loops in AdS/CFT Correspondence
Creators: name: Tai, Ta-Sheng
name: Yamaguchi, Satoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the two circular Wilson loop correlator in which one is of anti-symmetric representation, while the other is of fundamental representation in 4-dimensional ${\cal N}=4$ super Yang-Mills theory. This correlator has a good AdS dual, which is a system of a D5-brane and a fundamental string. We calculated the on-shell action of the string, and clarified the Gross-Ooguri transition in this correlator. Some limiting cases are also examined.
description: 22 pages, 5 figures, v2: typos corrected, v3: final version in JHEP
Lysinimonas yzui Mei, Piao, Hu, Shi, Bai & Yin, 2020, SP. NOV.
Creators: name: Mei, Lijuan
name: Piao, Zhe
name: Hu, Jian
name: Shi, Linlin
name: Bai, Yanchao
name: Yin, Shixue
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Bacteria
Actinobacteria
Actinomycetia
Actinomycetales
Microbacteriaceae
Lysinimonas
Lysinimonas yzui

description: DESCRIPTION OF LYSINIMONAS YZUI SP. NOV.
 Lysinimonas yzui (y.zu ′ i. N.L. gen. n. yzui pertaining to YZU, Yangzhou University, where the taxonomic studies on the type strain were performed).
Cells are Gram-stain-negative, non-spore-forming, aerobic and non-motile rods. Colonies are yellow, round and convex aħer 4 days of growth at 28 °C on R2A agar. Cells are usually 0.5–0.7 µm wide and 1.0– 1.1 µm long. Growth occurs at 10–37 °C (optimum 30 °C) and at pH 6–9 (optimum pH 7.5) and in the presence of 0–5% (w/v) NaCl. Growth does not occur under anaerobic conditions. Oxidase-negative, urease-negative and catalase-positive. Negative for hydrolysis of carboxymethyl cellulose, gelatin, DNA, casein, starch and tyrosine and positive for hydrolysis of Tween 80. Does not assimilate erythritol, D-arabinose, D-ribose, L-xylose, D-ardonitol, methyl β-D-xylopyranoside, L-sorbose, D-sorbitol, raffinose, starch, D-lyxose, D-tagatose, D-fucose, L-fucose, potassium gluconate or potassium 5-ketogluconate (API 50 CH test strips). Positive for the following enzyme activities (API ZYM test strips): alkaline phosphatase, esterase (C4), esterase lipase (C8), cystine aromatase, acid phosphatase, naphthol-AS-BI-phosphate hydrolase, α-galactosidase, β-galactosidase, α-gluconase and β-gluconase. The major fatty acids are anteiso-C15:0, iso-C15:0, C16:0, iso-C16:0 and anteiso-C17:0.
 The type strain, N7XX-4 T (=CGMCC 1.16548 T =DSM 106791 T =JCM 32630 T), was isolated from cattail root grown on mine tailings from Phoenix Mountain, Tongling city, Anhui Province (PR China). The G+C content of the DNA of the type strain is 67.0 mol%(by HPLC) and 69 mol% (by genome-based analysis).
description: Published as part of Mei, Lijuan, Piao, Zhe, Hu, Jian, Shi, Linlin, Bai, Yanchao & Yin, Shixue, 2020, Lysinimonas yzui sp. nov., isolated from cattail root soil from mine tailings, pp. 2003-2007 in International Journal of Systematic and Evolutionary Microbiology 70 (3) on page 2007, DOI: 10.1099/ijsem.0.004013, http://zenodo.org/record/3745022
Time Variation in G24.78+0.08 A1: Evidence for an Accreting Hypercompact H II Region?
Creators: name: Galván-Madrid, Roberto
name: Rodríguez, Luis F.
name: Ho, Paul T. P.
name: Keto, Eric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Over a timescale of a few years, an observed change in the optically thick radio continuum flux can indicate whether an unresolved H II region around a newly formed massive star is changing in size. In this Letter we report on a study of archival VLA observations of the hypercompact H II region G24.78+0.08 A1 that shows a decrease of ~ 45 % in the 6-cm flux over a five year period. Such a decrease indicates a contraction of ~ 25 % in the ionized radius and could be caused by an increase in the ionized gas density if the size of the H II region is determined by a balance between photoionization and recombination. This finding is not compatible with continuous expansion of the H II region after the end of accretion onto the ionizing star, but is consistent with the hypothesis of gravitational trapping and ionized accretion flows if the mass-accretion rate is not steady.
description: 10 pages, 1 figure, accepted in ApJ Letters
Data-driven MHD simulation of successive solar plasma eruptions
Creators: name: Kaneko, Takafumi
name: Park, Sung-Hong
name: Kusano, Kanya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar flares and plasma eruptions are sudden releases of magnetic energy stored in the plasma atmosphere. To understand the physical mechanisms governing their occurrences, three-dimensional magnetic fields from the photosphere up to the corona must be studied. The solar photospheric magnetic fields are observable, whereas the coronal magnetic fields cannot be measured. One method for inferring coronal magnetic fields is performing data-driven simulations, which involves time-series observational data of the photospheric magnetic fields with the bottom boundary of magnetohydrodynamic simulations. We developed a data-driven method in which temporal evolutions of the observational vector magnetic field can be reproduced at the bottom boundary in the simulation by introducing an inverted velocity field. This velocity field is obtained by inversely solving the induction equation and applying an appropriate gauge transformation. Using this method, we performed a data-driven simulation of successive small eruptions observed by the Solar Dynamics Observatory and the Solar Magnetic Activity Telescope in November 2017. The simulation well reproduced the converging motion between opposite-polarity magnetic patches, demonstrating successive formation and eruptions of helical flux ropes.
description: 12 pages, 5 figures, accepted for publication in ApJ
title: Ο ρόλος του ηλεκτρονικού εμπορίου στην ανάπτυξη μιας επιχείρησης
title: The role of e-commerce in the development of a business
titleType: AlternativeTitle
Creators: name: Τσίτουρας, Αθανάσιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Ηλεκτρονικό εμπόριο
subject: Ψηφιακός μετασχηματισμός
subject: Αύξηση κέρδους

description: Στόχος της παρούσας εργασίας είναι η μελέτη της πρακτικής του Ηλεκτρονικού Εμπορίου και η επίδραση του στα οικονομικά αποτελέσματα μιας επιχείρησης. Θα εξεταστεί το μέγεθος στο οποίο μπορεί να επηρεάσει και να διαμορφώσει την κερδοφορία της. Στο πρώτο κεφάλαιο της εργασίας θα μελετηθεί κυρίως η χρήση του Ηλεκτρονικού Εμπορίου έως σήμερα και στη συνέχεια θα αναζητηθούν οι μορφές και οι επιμέρους κατηγορίες του. Εξετάζοντας επίσης τα πλεονεκτήματα και τα μειονεκτήματα του, παρουσιάζονται οι λόγοι που οι άνθρωποι το επιλέγουν για τις συναλλαγές. Αναλύοντας στη συνέχεια τον ψηφιακό μετασχηματισμό και πιο συγκεκριμένα, τις τεχνολογίες που καθιστούν τη συγκεκριμένη μέθοδο λειτουργική και ασφαλή, μελετάται και αναλύεται η επίδραση του ηλεκτρονικού εμπορίου στις επιχειρήσεις, αλλά και το αντίκτυπο που έχει στο διεθνές εμπόριο. Για την καλύτερη κατανόηση της σημασίας του Ηλεκτρονικού Εμπορίου στην κερδοφορία των επιχειρήσεων, επίκεντρο της παρούσας μελέτης θα είναι η επιχείρηση NIKE. Θα αναλυθεί πώς η χρήση των ηλεκτρονικών μεθόδων μπορεί να οδηγήσει στην αύξηση του κέρδους μιας επιχείρησης παγκόσμιας δύναμης.
Isospin-breaking two-nucleon force with explicit Delta-excitations
Creators: name: Epelbaum, E.
name: Krebs, H.
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the leading isospin-breaking contributions to the two-nucleon two-pion exchange potential due to explicit Delta degrees of freedom in chiral effective field theory. In particular, we find important contributions due to the delta mass splittings to the charge symmetry breaking potential that act opposite to the effects induced by the nucleon mass splitting.
description: 10 pages, 4 figures
Modal Decomposition of Turbulent Supersonic Cavity
Creators: name: Soni, Rahul Kumar
name: Arya, Nitish
name: De, Ashoke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Self-sustained oscillation in Mach 3 supersonic cavity with a length-to-depth ratio of 3 is investigated using wall modeled Large Eddy Simulation (LES) methodology for ReD = 3.39*10^5. The unsteady data obtained through computation is utilized to investigate the spatial and temporal evolution of the flow field, especially second invariant of velocity tensor; while the phase averaged data is analyzed over a feedback cycle to study the spatial structures. This analysis is accompanied by the Proper Orthogonal Decomposition (POD) data, which reveals the presence of discrete vortices along the shear layer. The POD analysis is performed in both the spanwise and streamwise planes to extract the coherence in flow structures. Finally, Dynamic Mode Decomposition (DMD) is performed on the data sequence to get the dynamic information and deeper insight into the self-sustained mechanism.
CodeCity: A Comparison of On-Screen and Virtual Reality - Replication Package (2nd experiment)
Creators: name: Moreno-Lumbreras, David
name: Minelli, Roberto
name: Villaverde, Andrea
name: Lanza, Michele
name: González-Barahona, Jesus M.
Publisher: name: Zenodo
Year: 2021
Subjects: Software Visualization
Empirical
Technological
3D
Virtual Reality
web
Experiment
software evolution
city metaphor
codecity
reverse engineering

description: The files attached contain the replication package for the second experiment presented in the article "CodeCity: A Comparison of On-Screen and Virtual Reality". Please, unzip the zip file and follow the README.md file
Goertz, Harald: Allgemeines Priestertum und ordiniertes Amt bei Luther
Creators: name: Globig, Christine
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 49 Nr. 2 (2000): Ökumenische Rundschau, Band 49, Heft 2
Great expectations in music: violation of rhythmic expectancies elicits late frontal gamma activity nested in theta oscillations
Creators: name: Edalati, Mohammadreza
name: Mahmoudzadeh, Mahdi
name: Safaie, Javad
name: Wallois, Fabrice
name: Moghimi, Sahar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Rhythm processing involves building expectations according to the hierarchical temporal structure of auditory events. Although rhythm processing has been addressed in the context of predictive coding, the properties of the oscillatory response in different cortical areas is still not clear. We explored the oscillatory properties of the neural response to rhythmic incongruence and explored the cross-frequency coupling between multiple frequencies to provide links between the concepts of predictive coding and rhythm perception. We designed an experiment to investigate the neural response to rhythmic deviations in which the tone either arrived earlier than expected or the tone in the same metrical position was omitted. These two manipulations modulate the rhythmic structure differently, with the former creating a larger violation of the general structure of the musical stimulus than the latter. Both deviations resulted in an MMN response, whereas only the rhythmic deviant resulted in a subsequent P3a. Rhythmic deviants due to the early occurrence of a tone, but not omission deviants, elicited a late high gamma response (60-80 Hz) at the end of the P3a over the left frontal region, which, interestingly, correlated with the P3a amplitude over the same region and was also nested in theta oscillations. The timing of the elicited high-frequency gamma oscillations related to rhythmic deviation suggests that it might be related to the update of the predictive neural model, corresponding to the temporal structure of the events in higher-level cortical areas.
Air interface protocol design for wireless ATM
Creators: name: Davari, Shahram
Publisher: name: University of British Columbia
Year: 2009

description: The concept of "Wireless Asynchronous Transfer Mode (WATM) is actively considered as a potential framework for next-generation wireless communication networks. In this thesis, the fundamental issues that have to be addressed in order to provide broadband multimedia services to mobile users are discussed. Some system architectures are reviewed which extend the broadband wireline infrastructure to the wireless environment. The Air Interface Protocol (AIP) design which has a direct impact on channel utilization and QoS guarantee, is examined in detail. Wireless links are fading channels, which introduce burst transmission errors. WATM systems are expected to support high data rate applications, therefore the channel behaves as a slow fading channel. Many techniques can overcome slow fading, but the real-time nature of most WATM applications require use of ARQ techniques. To accommodate various applications with different QoS requirements (delay, cell loss ratio) is challenging and requires different error correction techniques to efficiently utilize the channel bandwidth. The solution proposed is to divide a frame to a few sub-frames, and to apply an adaptive FEC/ARQ technique to the sub-frames to overcome channel errors. The proposed system uses a novel Limited ARQ technique; this is a modified Selective Repeat ARQ (SR_ARQ) in which the number of retransmissions is limited and controlled by the base station. Some bandwidth is reserved in each sub-frame to ensure the availability of slots for retransmitted cells. Channel throughput efficiency drives trade-offs among the most important system parameters including number of sub-frames per frame, frame duration, permitted number of retransmissions, and fading burst duty factor.
Dispersive Charge and Flux Qubit Readout as a Quantum Measurement Process
Creators: name: Tornberg, L.
name: Johansson, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the dispersive readout of superconducting charge and flux qubits as a quantum measurement process. The measurement oscillator frequency is considered much lower than the qubit frequency. This regime is interesting because large detuning allows for strong coupling between the measurement oscillator and the signal transmission line, thus allowing for fast readout. Due to the large detuning we may not use the rotating wave approximation in the oscillator-qubit coupling. Instead we start from an approximation where the qubit follows the oscillator adiabatically, and show that non-adiabatic corrections are small. We find analytic expressions for the measurement time, as well as for the back-action, both while measuring and in the off-state. The quantum efficiency is found to be unity within our approximation, both for charge and flux qubit readout.
description: 26 pages, 3 figures, To be published in Journal of Low Temperature Physics
Mass-in-Mass Lattices with Small Internal Resonators
Creators: name: Hadadifard, Fazel
name: Wright, J. Douglas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the mass-in-mass (MiM) lattice when the internal resonators are very small. When there are no internal resonators the lattice reduces to a standard Fermi-Pasta-Ulam-Tsingou (FPUT) system. We show that the solution of the MiM system, with suitable initial data, shadows the FPUT system for long periods of time. Using some classical oscillatory integral estimates we can conclude that the error of the approximation is (in some settings) higher than one may expect.
Detection of Cyclopropenylidene on Titan with ALMA
Creators: name: Nixon, Conor A.
name: Thelen, Alexander E.
name: Cordiner, Martin A.
name: Kisiel, Zbigniew
name: Charnley, Steven B.
name: Molter, Edward M.
name: Serigano, Joseph
name: Irwin, Patrick G. J.
name: Teanby, Nicholas A.
name: Kuan, Yi-Jehng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the first detection on Titan of the small cyclic molecule cyclopropenylidene (c-C3H2) from high sensitivity spectroscopic observations made with the Atacama Large Millimeter/sub-millimeter Array (ALMA). Multiple lines of cyclopropenylidene were detected in two separate datasets: ~251 GHz in 2016 (Band 6) and ~352 GHz in 2017 (Band 7). Modeling of these emissions indicates abundances of 0.50 +/- 0.14 ppb (2016) and 0.28 +/- 0.08 (2017) for a 350 km step model, which may either signify a decrease in abundance, or a mean value of 0.33 +/- 0.07 ppb. Inferred column abundances are (3-5)E12 cm-2 in 2016 and (1-2)E12 cm-2 in 2017, similar to photochemical model predictions. Previously the C3H3+ ion has been measured in Titan's ionosphere by Cassini's Ion and Neutral Mass Spectrometer (INMS), but the neutral (unprotonated) species has not been detected until now, and aromatic versus aliphatic structure could not be determined by the INMS. Our work therefore represents the first unambiguous detection of cyclopropenylidene, the second known cyclic molecule in Titan's atmosphere along with benzene (C6H6) and the first time this molecule has been detected in a planetary atmosphere. We also searched for the N-heterocycle molecules pyridine and pyrimidine finding non-detections in both cases, and determining 2-σ upper limits of 1.15 ppb (c-C5H5N) and 0.85 ppb (c-C4H4N2) for uniform abundances above 300 km. These new results on cyclic molecules provide fresh constraints on photochemical pathways in Titan's atmosphere, and will require new modeling and experimental work to fully understand the implications for complex molecule formation.
description: 34 pages, 13 figures. 8 tables
Matricial Proofs of Some Classical Results about Critical Point Location
Creators: name: Johnson, Charles R.
name: Paparella, Pietro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The Gauss--Lucas and Bôcher--Grace--Marden theorems are classical results in the geometry of polynomials. Proofs of the these results are available in the literature, but the approaches are seemingly different. In this work, we show that these theorems can be proven in a unified theoretical framework utilizing matrix analysis (in particular, using the field of values and the differentiator of a matrix). In addition, we provide a useful variant of a well-known result due to Siebeck.
description: This is an Accepted Manuscript of an article published by Taylor & Francis in The American Mathematical Monthly on 19-Dec-2019, available at https://www.tandfonline.com/doi/10.1080/00029890.2020.1671740
MACHINE LEARNING FOR EARLY DETECTION AND PREVENTION OF CHRONIC DISEASE
Creators: name: Afaque Alam, Dr. Savya Sachi
Publisher: name: Zenodo
Year: 2022

description: In the field of biomedical and healthcare communities, accurate prediction plays a major role to find out the patient's risk of the disease; the only way to overcome the mortality due to chronic diseases is to predict it earlier so that the disease prevention can be done; such a model is a patient's need in which machine learning is highly recommended; however, the precise prediction on the basis of symptoms becomes too difficult for doctor. Technological development, including machine learning, has a huge impact on health through an effective analysis of various chronic diseases for more accurate diagnosis and successful treatment. The hardest difficulty is accurately predicting sickness. Data mining is crucial in predicting the sickness in order to solve this issue. Using a chronic illnesses dataset from the UCI machine learning data warehouse, this work applies machine learning techniques to the analysis of chronic diseases. We employ data mining approaches to construct dependable prediction models for chronic illnesses, such as diabetes, cancer, heart disease, and kidney disease. Keywords— Logistic Regression, Chronic Diseases, Machine Learning, Diseases Prediction, Accuracy.
Geometric treatment of electromagnetic phenomena in conducting materials: variational principles
Creators: name: Badia-Majos, A
name: Cariñena, J F
name: Lopez, C
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The dynamical equations of an electromagnetic field coupled with a conducting material are studied. The properties of the interaction are described by a classical field theory with tensorial material laws in space-time geometry. We show that the main features of superconducting response emerge in a natural way within the covariance, gauge invariance and variational formulation requirements. In particular, the Ginzburg-Landau theory follows straightforward from the London equations when fundamental symmetry properties are considered. Unconventional properties, such as the interaction of superconductors with electrostatic fields are naturally introduced in the geometric theory, at a phenomenological level. The BCS background is also suggested by macroscopic fingerprints of the internal symmetries. It is also shown that dissipative conducting behavior may be approximately treated in a variational framework after breaking covariance for adiabatic processes. Thus, nonconservative laws of interaction are formulated by a purely spatial variational principle, in a quasi-stationary time discretized evolution. This theory justifies a class of nonfunctional phenomenological principles, introduced for dealing with exotic conduction properties of matter [Phys. Rev. Lett. 87, 127004 (2001)].
description: To be published in Journal of Physics A: Mathematical and General
EPG Treatment for AOS (Mauszycki et al., 2016)
Creators: name: Mauszycki, Shannon C.
name: Wright, Sandra
name: Dingus, Nicole
name: Wambaugh, Julie L.
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology

description: Purpose: This investigation was designed to examine the effects of an articulatory-kinematic treatment in conjunction with visual biofeedback (VBFB) via electropalatography (EPG) on the accuracy of articulation for acquired apraxia of speech (AOS).Method: A multiple-baseline design across participants and behaviors was used with 4 individuals with chronic AOS and aphasia. Accuracy of target speech sounds in treated and untreated phrases in probe sessions served as the dependent variable. Participants received an articulatory-kinematic treatment in combination with VBFB, which was sequentially applied to 3 stimulus sets composed of 2-word phrases with a target speech sound for each set.Results: Positive changes in articulatory accuracy were observed for participants for the majority of treated speech sounds. Also, there was generalization to untreated phrases for most trained speech sounds. Two participants had better long-term maintenance of treated speech sounds in both trained and untrained stimuli. Conclusions: Findings indicate EPG may be a potential treatment tool for AOS. It appears that individuals with AOS can benefit from VBFB via EPG in improving articulatory accuracy. However, further research is needed to determine if VBFB is more advantageous than behavioral treatments that have been proven effective in improving speech production for speakers with AOS.
Control of current ripple in dc-dc converters
Creators: name: Wang, Jing
Publisher: name: University of British Columbia
Year: 2009

description: An investigation is conducted into the analysis of power converters from the ripple point of view. In short, the thesis is about a deep understanding of the basic dc-dc converter from the ripple viewpoint and thus develops a family of converters with ripple free input current or output current by using coupled inductors, which may achieve reduced component count, reducing the amount of material and increasing the energy density. Based on the existing ripple free converter topologies, a synthesis method for ripple free current converters is summarized and studied. Five elements are found to be the minimum requirement to achieve ripple free current topology by using coupled inductors and the LCL structure is found important for ripple free current converters. Several modified converters are developed from the synthesis analysis which is presented in this thesis. A pair of generated modified Boost topologies are compared with the well-known Cuk and Sepic converters and found to have several advantages, such as low switch and diode voltage stress, low switch and diode current stress and low voltage and current stresses on capacitor Cs. In particular, the developed Boost converters can achieve ripple-free input current while keeping the properties of the conventional Boost converters when they operate in both continuous and discontinuous conduction modes. The modified Boost converters operating in discontinuous conduction mode are investigated for the application of power factor correction. They can keep the input current continuous or even ripple free, but be proportional to the input line voltage. An almost unity power factor can be achieved when the switching frequency and switching duty ratio are fixed. This indicates that the pair of modified Boost topologies have the same "voltage follower" property as the conventional Boost topology, but with a continuous and ripple free input inductor current, which is the same as the Cuk and Sepic converters. As the reverse circuits of the modified Boost topologies, a pair of modified Buck topologies are developed and analyzed. They are found to have continuous and ripple free output current, in both continuous conduction mode and discontinuous conduction mode. The modified Buck topologies can keep the same properties as the conventional Buck topology while they maintain the output current continuous and ripple free. In addition, the modified Buck topology 1 is found to have high input impedance which can limit the input in-rush current effectively. All modified topologies can use coupled inductors to decrease the converter size and weight, which is very desirable.
Spitzer Reveals Evidence of Molecular Absorption in the Atmosphere of the Hot Neptune LTT 9979b
Creators: name: Dragomir, Diana
name: Crossfield, Ian J. M.
name: Benneke, Bjorn
name: Wong, Ian
name: Daylan, Tansu
name: Diaz, Matias
name: Deming, Drake
name: Molliere, Paul
name: Kreidberg, Laura
name: Jenkins, James S.
name: Berardo, David
name: Christiansen, Jessie L.
name: Dressing, Courtney D.
name: Gorjian, Varoujan
name: Kane, Stephen R.
name: Mikal-Evans, Thomas
name: Morales, Farisa Y.
name: Werner, Michael
name: Ricker, George R.
name: Vanderspek, Roland
name: Seager, S.
name: Winn, Joshua N.
name: Jenkins, Jon M.
name: Colon, Knicole D.
name: Fong, Willie
name: Guerrero, Natalia
name: Hesse, Katharine
name: Rose, Hugh P. Osborn Mark E.
name: Smith, Jeffrey C.
name: Ting, Eric B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Non-rocky sub-jovian exoplanets in high irradiation environments are rare. LTT 9979b, also known as TESS Object of Interest (TOI) 193.01, is one of the few such planets discovered to date, and the first example of an ultra-hot Neptune. The planet's bulk density indicates that it has a substantial atmosphere, so to investigate its atmospheric composition and shed further light on its origin, we obtained {\it Spitzer} IRAC secondary eclipse observations of LTT 9979b at 3.6 and 4.5 $μ$m. We combined the {\it Spitzer} observations with a measurement of the secondary eclipse in the {\it TESS} bandpass. The resulting secondary eclipse spectrum strongly prefers a model that includes CO absorption over a blackbody spectrum, incidentally making LTT 9979b the first {\it TESS} exoplanet (and the first ultra-hot Neptune) with evidence of a spectral feature in its atmosphere. We did not find evidence of a thermal inversion, at odds with expectations based on the atmospheres of similarly-irradiated hot Jupiters. We also report a nominal dayside brightness temperature of 2305 $\pm$ 141 K (based on the 3.6 $μ$m secondary eclipse measurement), and we constrained the planet's orbital eccentricity to $e < 0.01$ at the 99.7 \% confidence level. Together with our analysis of LTT 9979b's thermal phase curves reported in a companion paper, our results set the stage for similar investigations of a larger sample of exoplanets discovered in the hot Neptune desert, investigations which are key to uncovering the origin of this population.
description: 12 pages, 5 figures; accepted to ApJ Letters
Geometrical Frustration in Two Dimensions: Idealizations and Realizations of a Hard Disc Fluid in Negative Curvature
Creators: name: Modes, Carl D.
name: Kamien, Randall D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We examine a simple hard disc fluid with no long range interactions on the two dimensional space of constant negative Gaussian curvature, the hyperbolic plane. This geometry provides a natural mechanism by which global crystalline order is frustrated, allowing us to construct a tractable model of disordered monodisperse hard discs. We extend free area theory and the virial expansion to this regime, deriving the equation of state for the system, and compare its predictions with simulation near an isostatic packing in the curved space. Additionally, we investigate packing and dynamics on triply periodic, negatively curved surfaces with an eye toward real biological and polymeric systems.
description: 14 pages, 8 figures