cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Προσδιορισμός σκληρότητας και μέτρου ελαστικότητας της αδαμαντίνης και της οδοντίνης στο ανθρώπινο δόντι
titleType: AlternativeTitle
Creators: name: Τσιουβάκας, Δημήτρης
Publisher: name: University of Thessaly
Year: 2008
Subjects: subject: ΟΔΟΝΤΙΑΤΡΙΚΗ
subject: ΔΟΝΤΙΑ -- ΕΡΕΥΝΑ

description: Το ανθρώπινο δόντι και οι αξιοθαύμαστες μηχανικές του ιδιότητες αποτέλεσαν αντικείμενο πολλών και επισταμένων ερευνών. Για τον προσδιορισμό των μηχανικών ιδιοτήτων του δοντιού πολλές είναι και οι μέθοδοι που κατά καιρούς προτείνονται από διάφορους ερευνητές ενώ νέες μέθοδοι συνεχίζουν να έρχονται στο προσκήνιο. Η τεχνική που χρησιμοποιήθηκε στο πλαίσιο αυτής της εργασίας για τον προσδιορισμό της σκληρότητας της οδοντίνης και της αδαμαντίνης του ανθρώπινου δοντιού ήταν μια τεχνική μικροδιείσδυσης με την βοήθεια ενός μικροσκληρόμετρου και διεισδυτή τύπου Κηοορ. Για τον προσδιορισμό της σκληρότητας έγιναν μετρήσεις σε διάφορα δοκίμια από ανθρώπινα δόντια στο εργαστήριο με την βοήθεια του μικροσκληρόμετρου και με την χρήση διεισδυτή τύπου Κηοορ. Για τον προσδιορισμό του μέτρου ελαστικότητας μετρήθηκαν οι διαστάσεις των εντυπωμάτων της μικροσκληρομέτρησης. Με την βοήθεια μοντέλων που έχουν προταθεί από άλλους ερευνητές και τα οποίοι βασίζονται στην ελαστική επαναφορά των δοκιμίων, υπολογίστηκε το μέτρο ελαστικότητας. Οι τιμές που μετρήθηκαν για την σκληρότητα Κηοορ ήταν για την αδαμαντίνη 254.57ΗΚ ή 2,496 GPa και για την οδοντίνη 65,1 ΗΚ ή 0,639 GPa και ήταν σε συμφωνία με αυτές άλλων ερευνητών. Η σκληρότητα της αδαμαντίνης έχει την τάση να μειώνεται όσο αυξάνεται η απόσταση από την εξωτερική επιφάνεια ενώ αντίθετα η σκληρότητα της οδοντίνης να αυξάνεται όσο αυξάνεται η απόσταση από τη διεπιφάνεια. Οι τιμές του μέτρου ελαστικότητας για την οδοντίνη 14,3GPa και 19GPa που προέκυψαν χρησιμοποιώντας την τιμή για την σταθερά « 0,34 και 0,45 αντίστοιχα ήταν σε συμφωνία με αυτές άλλων ερευνητών. Οι αντίστοιχες τιμές για την αδαμαντίνη, αν και δεν μπορούν να θεωρηθούν ιδιαιτέρως αξιόπιστες, ήταν 135 GPa και 179 GPa, σχετικά υψηλές σε σύγκριση με αυτές της βιβλιογραφίας.
Muon Magnetic Moment and the Goldstone Boson Higgs
Creators: name: Antipin, Oleg
name: De Curtis, Stefania
name: Redi, Michele
name: Sacco, Carlotta
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the correction to the muon magnetic moment in theories where the Higgs is a pseudo-Goldstone boson and leptons are partially composite. Using a general effective lagrangian we show that in some regions of parameters a sizable new physics contribution to the magnetic moment can be obtained from composite fermions that could explain the 3.5$σ$ experimental discrepancy from the Standard Model prediction. This effect depends on the derivative interactions of the Higgs that do not modify the coupling of the Higgs to leptons and it does not require extremely light fermions, allowing to easily avoid LHC bounds. Our derivations can be in general applied to dipole operators in theories with Goldstone boson Higgs.
description: 16 pages, 3 figures
title: 061 - Mineur des soufrières de Lercara (Province de Palerme - Sicile)
title: 061 - Sulfur Miner of Lercara (Province of Palermo - Sicily)
Creators: name: Généro, Jean-Damien
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025

description: Images et édition numérique (XML, LaTeX, PDF) de *Mineur des soufrières de Lercara (province de Palerme — Sicile), ouvrier-propriétaire dans le système des engagements volontaires permanents, d'après les renseignements recueillis sur les lieux en 1886, par le prof. Hippolyte Santangelo-Spoto, avocat à Palerme, membre titulaire dé la Société internationale d'économie sociale.*, série 2, vol. 2, fasc. 15 (1889), monographie n°61, 1890, p. 281-336.
description: Source: https://ouvriersdeuxmondes.huma-num.fr/monographie/mineur-soufrieres-lercara-61
description: date: 1888-1890
Subspace-diskcyclic sequences of linear operators
Creators: name: Azimi, M. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: A sequence $\{T_n\}_{n=1}^{\infty}$ of bounded linear operators between separable Banach spaces $X, Y$ is called diskcyclic if there exists a vector $x\in X$ such that the disk-scaled orbit $\{αT_n x: n\in \mathbb{N}, α\in\mathbb{C}, | α| \leq 1\}$ is dense in $Y$. In the first section of this paper we study some conditions that imply the diskcyclicity of $\{T_n\}_{n=1}^{\infty}$. In particular, a sequence $\{T_n\}_{n=1}^{\infty}$ of bounded linear operators on separable infinite dimensional Hilbert space $\mathcal{H}$ is called subspace-diskcyclic with respect to the closed subspace $M\subseteq \mathcal{H},$ if there exists a vector $x\in \mathcal{H}$ such that the disk-scaled orbit $\{αT_n x: n\in \mathbb{N}, α\in\mathbb{C}, | α| \leq 1\}\cap M$ is dense in $M$. In the second section we survey some conditions and subspace-diskcyclicity criterion (analogue the results obtained by the some mathematicians in \cite{MR2261697, MR2720700, MR1111569}) which are sufficient for the sequence $\{T_n\}_{n=1}^{\infty}$ to be subspace-diskcyclic.
Entropy NAND: Early Functional Completeness in Entropy Networks
Creators: name: Jesse, Forrest Fabian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: F.1.1; F.1.2
subject: 37A35, 81P15

description: An observer increases in relative entropy as it receives information from what it is observing. In a system of only an observer and the observed, an increase in the relative entropy of the observer is a decrease in the relative entropy of the observed. Linking together these directional entropy disequilibriums we show that NAND and NOR functionality arise in such networks at very low levels of complexity.
description: 12 pages, 3 figures
Higher Twists
Creators: name: Braun, Vladimir M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Higher twist corrections refer to a certain class of contributions to hard processes in strong interactions that are suppressed by a power of the hard scale. This is a very broad field of research which is becoming more and more important as the accuracy of the available experimental data increases. I give an overview of some basic relevant theory concepts and technical developments, and briefly discuss a few phenomenological applications.
description: 12 pages, 7 figures, Plenary talk at 15th Conference on Quark Confinement and the Hadron Spectrum, 1-6 August 2022, Stavanger, Norway Stavanger, Norway
Bridging the textbook to the clinic: teaching the menstrual cycle backwards
Creators: name: Kornfield, Molly S.
Publisher: name: Oregon Health and Science University
Year: 2023
Subjects: subject: Diversity, Equity, Inclusion
subject: Health sciences education
subject: Classroom teaching
subject: Didactic teaching
subject: Educational research methods and models

description: Within OB/GYN residency training, there is a gap in knowledge and competence in the reproductive endocrinology and infertility (REI) subspecialty, noted both on resident and post-graduate surveys at our institution as well as nationally. There is currently only one published REI curriculum, and the medical information covered is now outdated. To review this information, and improve retention and applicability for a population of OB/GYN residents, we sought to teach the menstrual cycle backwards using interactive, small group sessions reviewing multiple brief clinical cases to teach and reinforce the physiology.
Economic Analysis of Locally Produced Aquaculture Feeds with Complements of Plant-based Ingredients in Kainji Lake Basin, Nigeria
Creators: name: Omeje, Julius Emeka
name: Achike, Anthonia Ifeyinwa
name: Nwabeze, Godfrey O
name: Ibiyo, Lenient Mercy O
name: Jimmy, Samuel Preye
name: Omeje, Julius Emeka
name: Achike, Anthonia Ifeyinwa
name: Nwabeze, Godfrey O
name: Ibiyo, Lenient Mercy O
name: Jimmy, Samuel Preye
Publisher: name: Unknown
Year: 2023
Subjects: subject: Production Economics
subject: Aquaculture
subject: Feed
subject: Plant
subject: Fishmeal
subject: Economics

description: Optimization through cost minimization is a key strategy aquaculture feed producers adopt to ensure a continuous supply of fish in the global market. In light of this consideration, the study analyzed the economics of locally produced aquaculture feeds by complementing fishmeal with plant-based sources of ingredients. Specifically, the study estimated the cost and returns, socio-economic determinants of net income, and challenges of local feed production. Using a survey design, a case study approach was used to collect data from 36 aquaculture feed producers/millers. The data were presented using descriptive statistics, budgetary techniques, and two-stage least squares regression analysis. Key findings established that the majority (78.12%) of aquaculture local feed producers were men, and 43.75% had tertiary educational qualifications with a good number of years of experience. The profitability indicators show that aquaculture local feed production is profitable with 3.24% net returns on investment. The result further indicates that the incorporation of plantbased sources of ingredients reduced the utilization of Fishmeal (Clupeids) by 50%. Also, the regression analysis shows that the years of experience and initial capital investment were statistically significant (p < 0.05) determinants of net income while the major challenges in aquaculture local feed production were lack of perfect substitute for Fishmeal ( =2.94), government regulations on the harvest of Clupeids used for Fishmeal ( x=2.91), poor access to capital ( x=2.88) and high cost of machine spare parts ( x=2.88). Based on the findings, it is recommended that fish nutritionists should intensify research on the production of fish feeds with a sole plant source of ingredients.
Role of electronic correlations in the Kagome lattice superconductor LaRh$_3$B$_2$
Creators: name: Chaudhary, Savita
name: Shama
name: Singh, Jaskaran
name: Consiglio, Armando
name: Di Sante, Domenico
name: Thomale, Ronny
name: Singh, Yogesh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: LaRh$_3$B$_2$ crystallizes in a layered structure where Rh atoms form a perfect Kagome lattice. The material shows superconductivity at $T_c \approx 2.6$~K\@ and no signature for density wave instabilities. We report our measurements of electronic transport, magnetization, and heat capacity in the normal and superconducting state, and derive normal and superconducting parameters. From first principles calculations of the electronic band structure, we identify all features of Kagome bands predominantly formed by the Rh $d$ orbitals: a flat band, Dirac cones, and van Hove singularities. The calculation of the phonon dispersions and electron-phonon coupling suggests a strong similarity between LaRh$_3$B$_2$ and AV$_3$Sb$_5$ (A=K,Cs,Rb). For LaRh$_3$B$_2$, it matches quantitatively with the observed $T_c$, supporting a conventional phonon mediated pairing mechanism. By comparison to the $A$V$_3$Sb$_5$ family, we conjecture a reduced importance of electron correlations in LaRh$_3$B$_2$.
description: 9 pages, 6 figures, 1 table
Ultrafast synthesis of SiC nanowire webs by floating catalysts rationalised through in-situ measurements and thermodynamic calculations
Creators: name: Gómez-Palos, Isabel
name: Vazquez-Pufleau, Miguel
name: Valilla, Jorge
name: Ridruejo, Álvaro
name: Tourret, Damien
name: Vilatela, Juan J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This work presents the synthesis of SiC nanowires floating in a gas stream through the vapour-liquid-solid (VLS) mechanism using an aerosol of catalyst nanoparticles. These conditions lead to ultrafast growth at 8.5 μm/s (maximum of 50 μm/s), which is up to 3 orders of magnitude above conventional substrate-based chemical vapour deposition. The high aspect ratio of the nanowires (up to 2200) favours their entanglement and the formation of freestanding network materials consisting entirely of SiCNWs. The floating catalyst chemical vapour deposition growth process is rationalised through in-situ sampling of reaction products and catalyst aerosol from the gas phase, and thermodynamic calculations of the bulk ternary Si-C-Fe phase diagram. The phase diagram suggests a description of the mechanistic path for the selective growth of SiCNWs, consistent with the observation that no other types of nanowires (Si or C) are grown by the catalyst. SiCNW growth occurs at 1130 °C, close to the calculated eutectic. According to the calculated phase diagram, upon addition of Si and C, the Fe-rich liquid segregates a carbon shell, and later enrichment of the liquid in Si leads to the formation of SiC. The exceptionally fast growth rate relative to substrate-based processes is attributed to the increased availability of precursors for incorporation into the catalyst due to the high collision rate inherent to this new synthesis mode.
description: 23 pages, 19 Figures, main manuscript and supporting information
Discrete qualocation methods for logarithmic-kernel integral equations on a piecewise smooth boundary
Creators: name: Elschner, Johannes
name: Jeon, Youngmok
name: Sloan, Ian H.
name: Stephan, Ernst P.
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: discrete qualocation
subject: Symm´s integral equation
subject: piecewise smooth boundary
subject: graded mesh
subject: logarithmic-kernel integral equations
subject: substraction of singularities
subject: Fourier methods
subject: Mellin convolution
subject: error estimates
subject: 65R20
subject: 65N38
subject: 45E10
subject: 65R30

description: We consider a fully discrete qualocation method for Symm's integral equation. The method is that of Sloan and Burn [14], for which a complete analysis is available in the case of smooth curves. The convergence for smooth curves can be improved by a subtraction of singularity (Jeon and Kimn [10]). In this paper we extend these results for smooth boundaries to polygonal boundaries. The analysis uses a mesh grading transformation method for Symm's integral equation, as in Elschner and Graham [4] and Elschner and Stephan [7], to overcome the singular behavior of solutions at corners.
Newly identified compact hierarchical triple system candidates using Gaia DR3
Creators: name: Czavalinga, Donát R.
name: Mitnyan, Tibor
name: Rappaport, Saul A.
name: Borkovits, Tamás
name: Gagliano, Robert
name: Omohundro, Mark
name: Kristiansen, Martti H. K.
name: Pál, András
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. We introduce a novel way to identify new compact hierarchical triple stars by exploiting the huge potential of Gaia DR3 and also its future data releases. We aim to increase the current number of compact hierarchical triples significantly. Methods. We utilize several eclipsing binary catalogs from different sky surveys totaling more than 1 million targets for which we search for Gaia DR3 Non-single Star orbital solutions with periods substantially longer than the eclipsing periods of the binaries. Those solutions in most cases should belong to outer orbits of tertiary stars in those systems. We also try to validate some of our best-suited candidates using TESS eclipse timing variations. Results. We find 403 objects with suitable Gaia orbital solutions of which 27 are already known triple systems. This makes 376 newly identified hierarchical triple system candidates in our sample. We analyze the cumulative probability distribution of the outer orbit eccentricities and find that it is very similar to the ones found by earlier studies based on the observations of the Kepler and OGLE missions. We found measurable non-linear eclipse timing variations or third-body eclipses in the TESS data for 192 objects which we also consider to be confirmed candidates. Out of these, we construct analytical light-travel time effect models for the eclipse timing variations of 22 objects with well-sampled TESS observations. We compare the outer orbital parameters from our solutions with the ones from the Gaia solutions and find that the most reliable orbital parameter is the orbital period, while the values of the other parameters should be used with caution.
description: 18 pages, 9 figures, 6 tables, Accepted for publication in Astronomy & Astrophysics
title: Παραγωγή και αξιολόγηση διδακτικού υλικού για την αξιοποίηση του βιβλίου "Ο άνθρωπος που μετρούσε" στη διδασκαλία και στη μάθηση των μαθηματικών
titleType: AlternativeTitle
Creators: name: Καλαμπούκας, Ηλίας
Publisher: name: University of Thessaly
Year: 2008
Subjects: subject: ΜΑΘΗΜΑΤΙΚΑ -- ΜΕΛΕΤΗ ΚΑΙ ΔΙΔΑΣΚΑΛΙΑ -- ΕΡΕΥΝΑ

description: Παρατηρήσεις έκδοσης: χαμηλής ποιότητας εκτύπωση.
description: Σκοπός της παρούσας έρευνας ήταν ο σχεδιασμός, η παραγωγή, η διδακτική εφαρμογή και η αξιολόγηση εκπαιδευτικού υλικού, το οποίο ενσωματώνει την ιστορία των μαθηματικών και τη λογοτεχνία στα μαθηματικά και στη μαθηματική εκπαίδευση γενικότερα, καθώς και η καταγραφή των εμπειριών και των απόψεων των φοιπ/τριών που συμμετείχαν στην έρευνα για τις επιπτώσεις μιας τέτοιας προσέγγισης στη διδασκαλία και στη μάθηση των μαθηματικών. Για τις ανάγκες της έρευνας επιλέχθηκε και αξιοποιήθηκε το βιβλίο «Ο άνθρωπος που μετρούσε». Στη διδακτική διαδικασία, διάρκειας έξι διδακτικών δίωρων, συμμετείχαν οκτώ φοιτήτριες του Παιδαγωγικού Τμήματος του Πανεπιστημίου Θεσσαλίας. Η συλλογή των ερευνητικών δεδομένων έγινε σε τρία στάδια: με την αρχική ομαδική εστιασμένη συνέντευξη, με τη συμμετοχική παρατήρηση και τις καταγραφές των επεισοδίων αλληλεπίδρασης κατά τη διάρκεια των διδακτικών παρεμβάσεων και με το τελικό ερωτηματολόγιο. Το υλικό που προέκυψε από τη συλλογή των δεδομένων της έρευνας αναλύεται και αξιολογείται σε σχέση με το σκοπό, τους στόχους και τα ερευνητικά ερωτήματα τα οποία είχαν τεθεί. Στην εργασία παρουσιάζονται και συζητιούνται τα αποτελέσματα της διδακτικής παρέμβασης που προέκυψαν από την ποιοτική ανάλυση και επεξεργασία των δεδομένων.
Asymptotic minimaxity of chi-square tests
Creators: name: Ermakov, Michael S.
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: Chi-square tests
subject: asymptotic efficiency
subject: asymptotic normality
subject: asymptotically minimax approach
subject: goodness-of-fit testing
subject: 62F05
subject: 62F12

description: We show that the sequence of chi-square tests is asymptotically minimax if a number of cells increases with increasing sample size. The proof utilizes Theorem about asymptotic normality of chi-square test statistics obtained under new compact assumptions.
Dielectric effects in the self-assembly of binary colloidal aggregates
Creators: name: Barros, Kipton
name: Luijten, Erik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Electrostatic interactions play an important role in numerous self-assembly phenomena, including colloidal aggregation. Although colloids typically have a dielectric constant that differs from the surrounding solvent, the effective interactions that arise from inhomogeneous polarization charge distributions are generally neglected in theoretical and computational studies. We introduce an efficient technique to resolve polarization charges in dynamical dielectric geometries, and demonstrate that dielectric effects \emph{qualitatively} alter the predicted self-assembled structures, with surprising colloidal strings arising from many-body effects.
description: Accepted for publication in Physical Review Letters
title: Mehrkindfamilien gerecht werden
title: Bedarfe im Alltag von Familien  mit drei und mehr Kindern
Creators: name: Andresen, Sabine
name: Dietz, Tatjana
name: Çinar, Dilan
Publisher: name: Bertelsmann Stiftung
Year: 2022
Subjects: Mehrkindfamilie
Familienpolitik
Kinderarmut
Familie
Bedarfe

description: Mütter und Väter von drei und mehr Kindern nehmen einen anspruchsvollen Alltag und finanzielle Einschränkungen auf sich. Dennoch werden sie in Politik und Gesellschaft kaum wahrgenommen und wenn, dann mit einem eher negativen Blick. Dem begegnet die Studie „Mehrkindfamilien gerecht werden. Bedarfe im Alltag von Familien mit drei und mehr Kindern“. Sie stellt die Vielfalt von Familien mit drei und mehr Kindern und ihre Herausforderungen im Alltag dar und macht sich stark für eine bessere Politik für diese Familienform.

Die 1,3 Millionen Mehrkindfamilien mit drei und mehr Kindern unter 18 Jahren in Deutschland sind vielfältig, ebenso ihre Entstehungsgeschichten. Die qualitative Studie der Forscher:innen der Goethe-Universität Frankfurt am Main zeigt dies in eindrucksvoller Weise. Sabine Andresen, Tatjana Dietz und Dilan Çinar haben zwanzig Interviews mit Eltern von Mehrkindfamilien für die Studie geführt und ausgewertet.

Mütter und Väter beschreiben in den Interviews den Alltag in ihren Familien: die Entstehungsgeschichte, das Glück, den Trubel, die bunte Vielfalt, die tägliche Anstrengung, die Fragen um Kinderbetreuung, Aufteilung des Wohnraumes, Berufstätigkeit und Organisation des Alltags und auch den Reichtum an Beziehungen, die Zeitknappheit und das Zusammengehörigkeitsgefühl.

Dabei wird deutlich, dass die Eltern für ihre Kinder oft auf Einkommen, eigene Karrieren und eine ausreichende Altersvorsorge, aber auch auf Zeit für sich und eigene Wünsche verzichten. Das machen sie in aller Regel gerne und bewusst. Hierfür verdienen sie Anerkennung und Wertschätzung.

Ihre Leistung wird aber allzu oft verkannt. Dabei ist sie mit Blick auf die Zukunft und den Generationenvertrag unserer Gesellschaft von großem Wert. Anstelle von Wertschätzung erfahren Mütter, Väter und Kinder aus Mehrkindfamilien oft Abwertungen und werden mit Vorurteilen konfrontiert. Dabei ringen Mehrkindeltern wie alle Mütter und Väter damit, jedem einzelnen ihrer Kinder gerecht zu werden, Care-Arbeit mit Erwerbsarbeit unter einen Hut zu bringen und dabei auch noch möglichst gut auf sich und die eigene Gesundheit zu achten.
title: Βελτιστοποίηση γενικευμένου συστήματος ελέγχου παραγωγής ΚΑΝΒΑΝ ενός σταδίου, με έγκαιρη προειδοποίηση της ζήτησης
titleType: AlternativeTitle
Creators: name: Λιάπης, Τριαντάφυλλος
Publisher: name: University of Thessaly
Year: 2000
Subjects: subject: ΠΑΡΑΓΩΓΗ -- ΔΙΟΙΚΗΣΗ ΚΑΙ ΟΡΓΑΝΩΣΗ
subject: ΠΑΡΑΓΩΓΗ -- ΕΛΕΓΧΟΣ

description: Στόχος της παρούσας μεταπτυχιακής εργασίας είναι η βελτιστοποίηση ενός γενικευμένου συστήματος ελέγχου παραγωγής Kanban ενός σταδίου, με έγκαιρη προειδοποίηση της ζήτησης. Αρχικά, στο κεφάλαιο 1 παρουσιάζονται οι δυο βασικοί τύποι πολιτικών ελέγχου της παραγωγής που απαντώνται σήμερα στη βιβλιογραφία, τα ωθούμενα και τα ελκυόμενα (Push και Pull) συστήματα. Επιχειρείται μια σύγκριση μεταξύ τους ενώ περιγράφονται αναλυτικά οι κυριότεροι εκπρόσωποι των ελκυόμενων συστημάτων (Kanban, Basestock, Conwip, κτλ.). Επίσης περιγράφονται ορισμένες αναλυτικές μέθοδοι οι οποίες έχουν αναφερθεί στην διεθνή βιβλιογραφία σχετικά με την βελτιστοποίηση των ελκυόμενων συστημάτων. Στη συνέχεια, στα κεφάλαια 2 και 3 παρουσιάζεται τόσο η αναλυτική περιγραφή της πολιτικής ελέγχου που ακολουθείται, όσο και η μοντελοποίηση του συστήματος με την βοήθεια του λογισμικού προσομοίωσης ARENA 3.0 S.M. Στο κεφάλαιο 4 δίνονται τα αποτελέσματα που προκύπτουν από τα διάφορα πειράματα προσομοίωσης. Η πειραματική διαδικασία αποτελείται από 2 κατηγορίες πειραμάτων. Η πρώτη αφορά την περίπτωση όπου έχουμε έγκαιρη προειδοποίηση της ζήτησης, ενώ στη δεύτερη εξετάζεται η αλληλεπίδραση και οι ιδιότητες των διάφορων παραμέτρων του συστήματος (Κ, S, b, h, λ, μ) απουσία του χρόνου προειδοποίησης της ζήτησης. Απο την παραπάνω μελέτη προκύπτουν ορισμένα χρήσιμα συμπεράσματα, όσον αφορά τις ιδιότητες του συστήματος. Έτσι στο κεφάλαιο 5 αναλύεται μια μεθοδολογία προσδιορισμού των κυριότερων παραμέτρων Κ και S, της πολιτικής ελέγχου του συστήματος, ενώ στο κεφάλαιο 6 προτείνονται ορισμένα θέματα για περαιτέρω έρευνα.
Large BMO spaces vs interpolation
Creators: name: Conde-Alonso, Jose M.
name: Mei, Tao
name: Parcet, Javier
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: In this paper we introduce a class of BMO spaces which interpolate with $L_p$ and are sufficiently large to serve as endpoints for new singular integral operators. More precisely, let $(Ω, Σ, μ)$ be a $σ$-finite measure space. Consider two filtrations of $Σ$ by successive refinement of two atomic $σ$-algebras $Σ_\mathrm{a}, Σ_\mathrm{b}$ having trivial intersection. Construct the corresponding truncated martingale BMO spaces. Then, the intersection seminorm only leaves out constants and we provide a quite flexible condition on $(Σ_\mathrm{a}, Σ_\mathrm{b})$ so that the resulting space interpolates with $L_p$ in the expected way. In the presence of a metric $d$, we obtain endpoint estimates for Calderón-Zygmund operators on $(Ω,μ, d)$ under additional conditions on $(Σ_\mathrm{a}, Σ_\mathrm{b})$. These are weak forms of the \lq isoperimetric\rq${}$ and the \lq locally doubling\rq${}$ properties of Carbonaro/Mauceri/Meda which admit less concentration at the boundary. Examples of particular interest include densities of the form $e^{\pm |x|^α}$ for any $α> 0$ or $(1 + |x|^β)^{-1}$ for any $β\gtrsim n^{3/2}$. A (limited) comparison with Tolsa's RBMO is also possible. On the other hand, a more intrinsic formulation yields a Calderón-Zygmund theory adapted to regular filtrations over $(Σ_\mathrm{a}, Σ_\mathrm{b})$ without using a metric. This generalizes well-known estimates for perfect dyadic and Haar shift operators. In contrast to previous approaches, ours extends to matrix-valued functions (via recent results from noncommutative martingale theory) for which only limited results are known and no satisfactory nondoubling theory exists so far.
title: Identification, interpretation and rectification of artefacts in digital breast tomosynthesis
Creators: name: Hlondo, Lalchhanhimi
Publisher: name: European Congress of Radiology
Year: 2018
Subjects: subject: Breast
subject: Mammography
subject: Digital radiography
subject: Diagnostic procedure
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To recognize the artefacts created by wrong positioning method / iatrogenic, defective processing algorithms and malfunctioning equipment With the invention of Tomosynthesis, superimposition of breast tissues which is a major disadvantage in 2D...
title: Παθητικός έλεγχος των κατασκευών: πειραματική πιστοποίηση αποσβεστήρων ελεγχόμενης μάζας
titleType: AlternativeTitle
title: Passive control of structures: experimental verification using tuned mass dampers
Creators: name: Καραΐσκος, Γρηγόριος Κ.
Publisher: name: University of Thessaly
Year: 2008
Subjects: subject: ΔΟΜΙΚΕΣ ΚΑΤΑΣΚΕΥΕΣ
subject: ΔΟΜΙΚΗ ΑΝΑΛΥΣΗ (ΜΗΧΑΝΙΚΗ)

description: The focus of this thesis is to review and experimentally verify the effect of vibrational control systems applied in tall and flexible structures. The installation of these systems on new and existing structures aim at the spectacular improvement of the structural dynamic behavior under different types of manmade and ambient excitations on the concepts of structural safety and operational conditions. The control theory of this thesis is applied for the design of Passive Control Systems and more specifically for the design of Tuned Mass Damper (TMD) installed properly on the main structure. The main mass of the Tuned Mass Damper, which is named as secondary system, is significantly smaller than the main mass of the primary system which is a Single Degree of Freedom (SDOF) system. A series of experiments with one and two TMDs installed on a SDOF modeled small laboratory structure are designed, constructed and performed. The structural behavior of the laboratory structure was tested by subjecting to artificially induced harmonic excitation and one of the components available during the strong El Centro earthquake. The main modal characteristics of the combined primary-secondary system studied are the modal frequencies, the damping coefficients and the mass ratios between primary and secondary systems. A smart laboratory technique for damping improvement of structures was also employed to both primary and secondary systems and it is shown that sensibly contributes to vibration attenuation of the primary system. All the experimental concepts and results are discussed herein and demonstrate the effectiveness and reliability of Passive Control Systems installed on tall and flexible structures that are susceptible to strong winds and earthquake events.
Thermal Dissipation Resulting from Everyday Interactions as a Sensing Modality -- The MIDAS Touch
Creators: name: Dar, Farooq
name: Emenike, Hilary
name: Yin, Zhigang
name: Liyanage, Mohan
name: Sharma, Rajesh
name: Zuniga, Agustin
name: Hoque, Mohammad A.
name: Radeta, Marko
name: Nurmi, Petteri
name: Flores, Huber
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Human-Computer Interaction (cs.HC)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We contribute MIDAS as a novel sensing solution for characterizing everyday objects using thermal dissipation. MIDAS takes advantage of the fact that anytime a person touches an object it results in heat transfer. By capturing and modeling the dissipation of the transferred heat, e.g., through the decrease in the captured thermal radiation, MIDAS can characterize the object and determine its material. We validate MIDAS through extensive empirical benchmarks and demonstrate that MIDAS offers an innovative sensing modality that can recognize a wide range of materials with up to 83% accuracy and generalize to variations in the people interacting with objects. We also demonstrate that MIDAS can detect thermal dissipation through objects, up to 2 mm thickness, and support analysis of multiple objects that are interacted with
Analysis of Clumps in Saturn's F Ring from Voyager and Cassini
Creators: name: French, Robert S.
name: Hicks, Shannon K.
name: Showalter, Mark R.
name: Antonsen, Adrienne K.
name: Packard, Douglas R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Saturn's F ring is subject to dynamic structural changes over short periods. Among the observed phenomena are diffuse extended bright clumps (ECs) ~ 3-40 degrees in longitudinal extent. These ECs appear, evolve, and disappear over a span of days to months. ECs have been seen by the two Voyager spacecraft, the Cassini orbiter, and various ground- and space-based telescopes. Showalter (2004, Icarus, 171, 356-371) analyzed all Voyager images of the F ring and found that there were 2-3 major and 20-40 minor ECs present in the ring at any given time. We expand upon these results by comparing the ECs seen by Voyager to those seen by Cassini in 2004-2010. We find that the number of minor ECs has stayed roughly constant and the ECs have similar distributions of angular width, absolute brightness, and semimajor axis. However, the common exceptionally bright ECs seen by Voyager are now exceedingly rare, with only two instances seen by Cassini in the six years, and they are now also much dimmer relative to the mean ring background. We hypothesize that these bright ECs are caused by the repeated impacts of small moonlets with the F ring core, and that these moonlets have decreased in number in the 25 years between missions.
description: 38 pages, 24 figures, 3 tables
Center manifolds for homoclinic solutions
Creators: name: Sandstede, Björn
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: center manifolds
subject: Shilnikov bifurcation
subject: homoclinic solutions
subject: saddle-foci equilibria
subject: semilinear parabolic equations
subject: 34C45
subject: 34C37
subject: 34C23

description: In this article, center-manifold theory for homoclinic solutions of ordinary differential equations or semilinear parabolic equations is developed. Here, a center manifold along a homoclinic orbit q(t) is a locally invariant manifold containing all solutions which stay close to q(t) in phase space for all times. Therefore, as usual, the low-dimensional center manifold contains the interesting recurrent dynamics nearby the homoclinic orbit and a considerable reduction of dimension is achieved. The manifold is of class C1,β for some β > 0. As one application, results of Shilnikov about the occurrence of complicated dynamics nearby homoclinic solutions approaching saddle-foci equilibria are generalized to semilinear parabolic equations.
title: Μη συμβατικός χαρακτηρισμός τοπογραφίας κατεργασμένων επιφανειών
titleType: AlternativeTitle
Creators: name: Τσολάκης, Ναούμ Κ.
Publisher: name: University of Thessaly
Year: 2008
Subjects: subject: ΜΗΧΑΝΟΥΡΓΙΚΗ ΤΕΧΝΟΛΟΓΙΑ
subject: ΜΕΤΑΛΛΑ, ΚΑΤΕΡΓΑΣΙΑ ΤΩΝ

description: Η αξιολόγηση της τραχύτητας επιφάνειας είναι πολύ σημαντική για πολλά θεμελιώδη προβλήματα όπως η τριβή, η παραμόρφωση επαφών, η θερμική και η ηλεκτρική αγωγιμότητα, η στιβαρότητα των ενώσεων κ.α. Γι’ αυτό το λόγο, η επιφανειακή τραχύτητα έχει αποτελέσει το αντικείμενο των πειραματικών και θεωρητικών ερευνών εδώ και δεκαετίες. Η πραγματική γεωμετρία της επιφάνειας είναι τόσο περίπλοκη που ένας πεπερασμένος αριθμός παραμέτρων δεν μπορεί να παρέχει μια πλήρη περιγραφή. Με την αύξηση των χρησιμοποιούμενων παραμέτρων, μπορεί να ληφθεί μια ακριβέστερη περιγραφή. Αυτός είναι ένας από τους λόγους για τις νέες παραμέτρους στην αξιολόγηση της επιφάνειας. Οι παράμετροι τραχύτητας επιφάνειας είναι ταξινομούνται κανονικά σε τρεις ομάδες σύμφωνα με τη λειτουργία της. Αυτές οι ομάδες ορίζονται ως οι παράμετροι εύρους, οι παράμετροι διαστήματος και οι υβριδικές παράμετροι. Τα τελευταία χρόνια, πέρα από τις παραπάνω συμβατικές μεθόδους, έχουν αναπτυχθεί και άλλες μη συμβατικές μέθοδοι για τον χαρακτηρισμό της γεωμετρίας των κατεργασμένων επιφανειών. Στην εργασία αυτή θα μας απασχολήσουν οι μη συμβατικές παράμετροι χαρακτηρισμού της τραχύτητας όπως το μήκος συσχέτισης, η fractal dimension, η comer frequency, η φασματική πυκνότητα ισχύος καθώς επίσης και οι wavelet. Ειδικότερα, για τον υπολογισμό τον παραπάνω παραμέτρων αναπτύχθηκε πρόγραμμα στον Η/Υ και έπειτα έγινε σύγκριση των αποτελεσμάτων με τους αντίστοιχους υπολογισμούς ήδη υπάρχοντος λογισμικού που συνοδεύει το τραχύμετρο του εργαστηρίου “Μηχανουργικών Κατεργασιών” για τις διάφορες τιμές της ανεξάρτητης παραμέτρου κοπής, της προώσεως.
Cosmological dynamics in higher-dimensional Einstein-Gauss-Bonnet gravity
Creators: name: Canfora, Fabrizio
name: Giacomini, Alex
name: Pavluchenko, Sergey A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we perform a systematic classification of the regimes of cosmological dynamics in Einstein-Gauss-Bonnet gravity with generic values of the coupling constants. We consider a manifold which is a warped product of a four dimensional Friedmann-Robertson-Walker space-time with a $D$-dimensional Euclidean compact constant curvature space with two independent scale factors. A numerical analysis of the time evolution as function of the coupling constants and of the curvatures of the spatial section and of the extra dimension is performed. We describe the distribution of the regimes over the initial conditions space and the coupling constants. The analysis is performed for two values of the number of extra dimensions ($D\geqslant 6$ both) which allows us to describe the effect of the number of the extra dimensions as well.
description: 17 pages, 4 figures; fits version accepted to Gen. Rel. Grav. arXiv admin note: text overlap with arXiv:1308.1896
Flux dependence of helium retention in clean W(110): Experimental evidence for He self-trapping
Creators: name: Dunand, A.
name: Minissale, M.
name: Angot, T.
name: Bisson, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Helium (He) retention in tungsten (W) is a concern in fusion reactors since it could be detrimental to plasma facing components performance and influence the fusion fuel balance. He being not soluble in W, it tends to agglomerate on preexisting defects (vacancy, grain boundary), but it could in theory also self-trap (be immobilized on a non-preexisting vacancy) through the emission of a vacancy/self-interstitial W pair in the vicinity of a Hen interstitial cluster. In the present study, we prepared a pure single crystal W(110) sample with a clean surface in order to evidence the self-trapping of He in the W bulk at a sample temperature of 300 K and for a constant fluence of 2.0x10$^{21}$ He$^+$.m$^{-2}$. At a He$^+$ kinetic energy of 130 eV and a flux of 0.3x10$^{17}$ He$^+$.m$^{-2}$.s$^{-1}$, we only observed a small He desorption peak below 600 K. Rising the ion flux to 0.7x10$^{17}$ He$^+$.m$^{-2}$.s$^{-1}$, we observed the sudden appearance of two desorption peaks at 950 K and 1700 K. For the highest flux studied in this work, 5.0x10$^{17}$ He$^+$.m$^{-2}$.s$^{-1}$, an additional desorption peak at 1800 K and a desorption shoulder at 1900 K are observed. The temperature position of these He desorption peaks are consistent with the density functional theory literature and points to the occurrence of self-trapping once the 0.7x10$^{17}$ He$^+$.m$^{-2}$.s$^{-1}$ flux is attained at 300 K and to the possible realization of trap-mutation for the flux of 5.0x10$^{17}$ He$^+$.m$^{-2}$.s$^{-1}$. The present set of results should be used to constrain the development of He retention and He bubbles growth models based on ab initio quantities.
POLICE CUSTODY DEATHS IN BANGLADESH AN ANALYSIS OF LEGAL LIABILITY.pdf
Creators: name: Alif Ovi, Dewan
name: Reza, Tanvir
Publisher: name: figshare
Year: 2023
Subjects: Domestic human rights law
Constitutional law
Administrative law

description: Custodial death is the most ominous indicator in our country's capture, detention, and remand. It has now become all the rage across the country. Deaths in police custody usually generate a great deal of public attention and are frequently coupled with causality disputes. Accused individuals frequently come into encounter with the criminal justice system, with those suffering from mental illnesses over-represented in police custody. As a result, identifying vulnerability is critical in order to guarantee that proper precautions may be put in place. This research is helping to show that to prevent such a curse from afflicting society, the country has some existing legislation, directions, guidelines, and precedents that are constantly derived from court decisions of other nations. The judicial system in Bangladesh is no exception. In context of this, the research examined, with the goal of emphasizing on judicial reforms, applicable legislation and their implementation, national legislative framework, and court precedents on the banning of inhumane custodial torture, including arrest, custody, and remand by police. Finding of the research particularly concentrate upon irregularities of provision to safeguarding accused right in the jail. The lack of sanitation, healthcare, standard food quality also found as errors of concern authorities. Beside these normal and natural death also counted as death in custody but not due to torture by police. The political believes and support nurture by police is also one of the key reasons to increasing torture and deaths. To solve this problems state should amend existing provision which is contradictory related to custodial torture, Increase the circumference of Human Rights Commission and give them power to investigate these properly and follow the guidelines given by courts. This research demonstrated a real-life scenario of custodial torture and critically analyzed national mechanisms that directly contradict custodial deaths and brutal punishment.
Cluster formation in a stepping stone model with continuous, hierarchically structured sites
Creators: name: Evans, Steven N.
name: Fleischmann, Klaus
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: Interacting diffusion
subject: stepping stone model
subject: cluster formation
subject: clustering
subject: coalescing Lévy process
subject: hierarchical structures
subject: resampling
subject: migration
subject: 60K35
subject: 60J60
subject: 60B15

description: A stepping stone model with site space a continuous, hierarchical group is constructed via duality with a system of (delayed) coalescing "stable" Lévy processes. This model can be understood as a continuum limit of discrete state-space, two allele, genetics models with hierarchically structured resampling and migration. The existence of a process rescaling limit on suitable large space and time scales is established and interpreted in terms of the dynamics of cluster formation. This paper was inspired by recent work of Klenke.
A Riemannian approach to the membrane limit in non-Euclidean elasticity
Creators: name: Kupferman, Raz
name: Maor, Cy
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Non-Euclidean, or incompatible elasticity is an elastic theory for pre-stressed materials, which is based on a modeling of the elastic body as a Riemannian manifold. In this paper we derive a dimensionally-reduced model of the so-called membrane limit of a thin incompatible body. By generalizing classical dimension reduction techniques to the Riemannian setting, we are able to prove a general theorem that applies to an elastic body of arbitrary dimension, arbitrary slender dimension, and arbitrary metric. The limiting model implies the minimization of an integral functional defined over immersions of a limiting submanifold in Euclidean space. The limiting energy only depends on the first derivative of the immersion, and for frame-indifferent models, only on the resulting pullback metric induced on the submanifold, i.e., there are no bending contributions.
Identifiability of distributed parameters for a class of quasilinear differential equations
Creators: name: Handrock-Meyer, Sybille
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: one-dimensional diffusive-like systems
subject: identifiability
subject: 35R30
subject: 35K55

description: Considering differential equations of second order which contain a term in the form (αux)x + bu, where α = α(x,u) and b = b(x, u), conditions for the identifiability of the coeffcients α and b are given.
title: Disorder and Discipline: The ECB's Transmission Protection Instrument
Creators: name: Peychev, Anna
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2022
Subjects: subject: Economic and Monetary Union
subject: European Central Bank
subject: Transmission Protection Instrument
subject: economic governance
subject: sovereign debt
subject: conditionality

description: European Papers - A Journal on Law and Integration, 2022 7(2), 739-748
description: European Forum Insight of 9 November 2022
description: I. Introduction. - II. EMU and market discipline. - III. How the markets would behave. - IV. How the markets should behave. - V. Protect and Discipline. - VI. Conclusion.
description: In the asymmetric Economic and Monetary Union "market discipline" has played an important and controversial role to compensate for the weakness of the legal framework as regards fiscal affairs. Both as an empirical matter of market behaviour and as a matter of the "no bail-out" clauses of arts 123 and 125 TFEU being effectively undermined after the crisis, however, "market discipline" has never worked as advertised. Instead, the Court of Justice has offered a contrived "synthesised" ver-sion of the "logic of the market" as a marker of the legality of financial assistance by the European Stability Mechanism and of the European Central Bank bond purchasing programs. The recent Transmission Protection Instrument announced by the Bank should be seen, so it is argued here, as an attempt not just to facilitate the normalisation of monetary policy, but to bring the relationship between economic law and governance, on the one hand, and market discipline, on the other, back to normal.
Photometric Mass Estimation and the Stellar Mass-Halo Mass Relation for Low Mass Galaxies
Creators: name: Zaritsky, Dennis
name: Behroozi, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a photometric halo mass estimation technique for local galaxies that enables us to establish the stellar mass-halo mass (SMHM) relation down to stellar masses of 10$^5$ M$_\odot$. We find no detectable differences among the SMHM relations of four local galaxy clusters or between the cluster and field relations and we find agreement with extrapolations of previous SMHM relations derived using abundance matching approaches. We fit a power law to our empirical SMHM relation and find that for adopted NFW dark matter profiles and for M$_* < 10^9$ M$_\odot$, the halo mass is M$_h = 10^{10.35\pm0.02}({\rm M}_*/10^8 {\rm M}_\odot)^{0.63\pm0.02}$. The normalisation of this relation is susceptible to systematic modelling errors that depend on the adopted dark matter potential and the quoted uncertainties refer to the uncertainties in the median relation. For galaxies with M$_* < 10^{9}$ M$_\odot$ that satisfy our selection criteria, the scatter about the fit in $M_h$, including uncertainties arising from our methodology, is 0.3 dex. Finally, we place lower luminosity Local Group galaxies on the SMHM relationship using the same technique, extending it to M$_* \sim 10^3$ M$_\odot$ and suggest that some of these galaxies show evidence for additional mass interior to the effective radius beyond that provided by the standard dark matter profile. If this mass is in the form of a central black hole, the black hole masses are in the range of intermediate mass black holes, $10^{(5.7\pm0.6)}$ M$_\odot$, which corresponds to masses of a few percent of M$_h$, well above values extrapolated from the relationships describing more massive galaxies.
description: Accepted for publication in MNRAS; 13 pages
Stability of pulses on optical fibers with phase-sensitive amplifiers
Creators: name: Alexander, James C.
name: Grillakis, Manoussos G.
name: Jones, Christopher K.R.T.
name: Sandstede, Björn
Publisher: name: Weierstrass Institute
Year: 1995
Subjects: subject: solitons
subject: nonlinear optical pulse propagation
subject: optical fibers
subject: stability
subject: 35Q55
subject: 35B35
subject: 78A60

description: Pulse stability is crucial to the effective propagation of information in a soliton-based optical communication system. It is shown in this paper that pulses in optical fibers, for which attenuation is compensated by phase-sensitive amplifiers, are stable over a large range of parameter values. A fourth-order nonlinear diffusion model due to Kath and co-workers is used. The stability proof invokes a number of mathematical techniques, including the Evans function and Grillakis' functional analytic approach.