cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Local position-space two-nucleon potentials from leading to fourth order of chiral effective field theory
Creators: name: Saha, S. K.
name: Entem, D. R.
name: Machleidt, R.
name: Nosyk, Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present local, position-space chiral NN potentials through four orders of chiral effective field theory ranging from leading order (LO) to next-to-next-to-next-to-leading order (N3LO, fourth order) of the Delta-less version of the theory. The long-range parts of these potentials are fixed by the very accurate pi-N LECs as determined in the Roy-Steiner equations analysis. At the highest order (N3LO), the NN data below 190 MeV laboratory energy are reproduced with the respectable chi^2/datum of 1.45. A comparison of the N3LO potential with the phenomenological Argonne v_18 (AV18) potential reveals substantial agreement between the two potentials in the intermediate range ruled by chiral symmetry, thus, providing a chiral underpinning for the phenomenological AV18 potential. Our chiral NN potentials may serve as a solid basis for systematic ab initio calculations of nuclear structure and reactions that allow for a comprehensive error analysis. In particular, the order by order development of the potentials will make possible a reliable determination of the truncation error at each order. Our new family of local position-space potentials differs from existing potentials of this kind by a weaker tensor force as reflected in relatively low D-state probabilities of the deuteron (P_D less or equal 4.0% for our N3LO potentials) and predictions for the triton binding energy above 8.00 MeV (from two-body forces alone). As a consequence, our potentials may lead to different predictions when applied to light and intermediate-mass nuclei in ab initio calculations and, potentially, help solve some of the outstanding problems in microscopic nuclear structure.
description: 36 pages, 14 figures. arXiv admin note: text overlap with arXiv:1703.05454. More discussion on contacts and Fierz reordering
On the Evolution of, and Hot Gas in, Wind-Blown Bubbles around Massive Stars -- Wind Bubbles Are Not Energy-Conserving
Creators: name: Dwarkadas, Vikram V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The structure and evolution of wind-blown bubbles (WBBs) around massive stars has primarily been investigated using an energy-conserving model of wind-blown bubbles. While this model is useful in explaining the general properties of the evolution, several problems remain, including inconsistencies between observed wind luminosities and those derived using this formulation. Major difficulties include the low X-ray temperature and X-ray luminosity, compared to the model. In this paper, we re-examine the evolution, dynamics, and kinematics of WBBs around massive stars, using published ionization gasdynamic simulations of wind-blown bubbles. We show that WBBs can cool efficiently due to the presence of various instabilities and turbulence within the bubble. The expansion of WBBs is more consistent with a momentum-conserving solution, rather than an energy-conserving solution. This compares well with the dynamics and kinematics of observed wind bubbles. Despite the cooling of the bubble, the shocked wind temperature is not reduced to the observed values. We argue that the X-ray emission arise mainly from clumps and filaments within the hot shocked wind region, with temperatures just above 10$^6$ K. The remainder of the plasma can contribute to a lesser extent.
description: 22 pages, 7 figures. Published in Galaxies. Only low-resolution figures are included due to size requirements; original high-resolution figures, especially Figure 1, can be obtained from the published paper in the journal
Time variability of the core-shift effect in the blazar 3C 454.3
Creators: name: Chamani, Wara
name: Savolainen, Tuomas
name: Ros, Eduardo
name: Kovalev, Yuri Y.
name: Wiik, Kaj
name: Lähteenmäki, Anne
name: Tornikoski, Merja
name: Tammi, Joni
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using VLBI to measure a so-called core shift effect is a common way of obtaining estimates of the jet magnetic field strength. The VLBI core is typically identified as the bright feature at the jet's base, and the position of the core changes with the observed frequency, $r_\mathrm{core} \propto ν^{-1/k_r}$. In this work, we investigated the time variability of the core-shift effect in the blazar 3C 454.3. We employed self-referencing analysis of multi-frequency (5, 8, 15, 22-24, and 43 GHz) VLBA data covering 19 epochs from 2005 until 2010. We found significant core shift variability ranging from 0.27 to 0.86 mas between 5 and 43 GHz, confirming the core-shift variability phenomenon observed before. Time variability of the core-shift index ($k_r$) was found typically below one, with an average value of $0.85 \pm 0.08$ and a standard deviation of $0.30$. $k_r<1$ values were found during flaring and quiescent states and our results indicate that commonly assumed conical jet shape and equipartition conditions do not always hold simultaneously. Still, these conditions are often assumed when deriving magnetic field strengths from core shift measurements, leading to unreliable results if $k_r$ significantly deviates from unity. Therefore, it is important to verify that $k_r = 1$ holds before using core shift values and the equipartition assumption to derive physical parameters in the jets. When $k_r = 1$ epochs are selected in the case of 3C 454.3, the magnetic field estimates are indeed quite consistent, even though the core shift varies with time. Additionally, our estimations of the jet's magnetic flux in 3C 454.3 show that the source is indeed in the magnetically arrested disk state. Finally, we found a good correlation of the core position with the core flux density, $r_\mathrm{core}\propto S_\mathrm{core}^{0.7}$, which is consistent with increased particle density during the flares.
description: 53 pages, 6 tables, 57 figures. Article submitted to Astronomy and Astrophysics
title: Ανασκαφές στις μνήμες των τόπων. Μια αρχέτυπη ανάγκη για την χάραξη των τοπιακών περιγραμμάτων
Creators: name: Αχειλα Παρασκευη
Publisher: name: Technical University of Crete
Year: 2015

description:    Η παρούσα ερευνητική εργασία έχει ως στόχο την αναζήτηση των βασικών αρχιτεκτονικών εργαλείων αναζήτησης της σχέσης με τον τόπο και την μνήμη. Τα εργαλεία αυτά σχετίζονται τόσο με την μετατροπή της σύγχρονης ιδεολογίας όσο και με την προσπάθεια εύρεσης των πρακτικών εργαλείων επανασύνδεσης με την παράδοση και την τοπική κουλτούρα.
   Η διαδικασία αυτή επιτυγχάνεται, αρχικά, με την αναζήτηση του θεωρητικού υπόβαθρου και των ορισμών που συνδέονται με τη μνήμη και συνεχίζεται με την εύρεση των έμπρακτων αρχιτεκτονικών μελετών της σύγχρονης ιστορίας που σχετίζονται κωδικοποιημένα με το στοιχείο της μνήμης. Τέλος, ο σχολιασμός της σύγχρονης πραγματικότητας οδηγεί στην αναγνώριση της ανάγκης επανατοποθέτησης της αρχιτεκτονικής σε νέες δομές εκφρασμένες από το πνεύμα του τόπου.
Individual departure time decision considering departure scheduling utility
Creators: name: Zhang, Wen-yi
name: Guan, Wei
name: Sun, Hui-jun
name: Ma, Ji-hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: The scheduling utility plays a fundamental role in addressing the commuting travel behaviours. In this paper, a new scheduling utility, termed as DMRD-SU, was suggested based on some recent research findings in behavioural economics. DMRD-SU admitted the existence of positive arrival-caused utility. In addition, besides the travel-time-caused utility and arrival-caused utility, DMRD-SU firstly took the departure utility into account. The necessity of the departure utility in trip scheduling was analysed comprehensively, and the corresponding individual trip scheduling model was presented. Based on a simple network, an analytical example was executed to characterize DMRD-SU. It can be found from the analytical example that: 1) DMRD-SU can predict the accumulation departure behaviors at NDT, which explains the formation of daily serious short-peak-hours in reality, while MRD-SU cannot; 2) compared with MRD-SU, DMRD-SU predicts that people tend to depart later and its gross utility also decrease faster. Therefore, the departure utility should be considered to describe the traveler's scheduling behaviors better.
description: 9 pages, 4 figures and 1 Table
Economy: What Socialists Can Do, Victor Gadboum
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Labor movement
Labor unions
Socialism
Finance, Public

description: A recording from the opening session of the Democratic Socialist organizing committee. The meeting is broken up by protestors. Leslie Nulty from the United Automobile Workers, Vic Gotbaum, Sam Brown and others speak
title: Από την Αναγέννηση στο High-tech. Η συμβολή του κτιριακού τύπου των τραπεζών στην αρχιτεκτονική εξέλιξη
Creators: name: Καπαγιαννιδης Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2014

description: Η τράπεζα μπορεί να χαρακτηριστεί ως ένα από τα κτίρια-κλειδιά της πόλης παρόμοιας σημασίας με το δημαρχείο, το θέατρο, τον κεντρικό ναό ή το σταθμό του τρένου. Αυτό γιατί αποτελεί κτίριο στο οποίο λαμβάνονται αποφάσεις που επηρεάζουν τη ζωή μας σε ατομικό αλλά και συλλογικό επίπεδο. Αναγνωρίζοντας λοιπόν τη σημασία τους για τις ζωές των μελών μιας κοινωνίας, στοχεύουν παραδοσιακά στη θέσπιση μιας εικόνας που εκμπέμει το στοιχείο της σταθερότητας, της στερεότητας και της μονιμότητας. Ωστόσο, το χαρακτηριστικό αυτό τείνει να μεταβληθεί τα τελευταία χρόνια λόγω αλλαγών στις τραπεζικές διαδικασίες με την ανάπτυξη τεχνολογικών καινοτομιών αλλά και γενικότερων αλλαγών στην οικονομία και την κοινωνία.
Κατά τον 20ο αιώνα η τραπεζική διαδικασία άρχισε να παρουσιάζεται ως παροχή υπηρεσιών και όχι ως ο ακρογωνιαίος λίθος της ανθρώπινης ύπαρξης, μια θέση που έχει χαρακτηριστεί ως αλαζονική και απόμακρη από την υπηρεσιοκρατούμενη κοινωνία μας. Τραπεζικοί οργανισμοί συγχωνεύονται και αρχίζει να εμφανίζεται το χαρακτηριστικό του υποκαταστήματος (καταστήματος χρήματος) σε διάφορα σημεία της πόλης ενώ τα κεντρικά κτίρια των οργανισμών αυτών αποτελούν αναγνωρίσιμες κτιριακές δομές που αποκτούν ολοένα και περισσότερη σημασία.
Ο πρόσφατος αυτός διαχωρισμός έχει τις ρίζες του στο παρελθόν. Η τράπεζα άρχισε να υφίσταται ως ένα μικρό κατάστημα με μετακινούμενους πάγκους ανταλλαγής αγαθών μέχρι την εμφάνιση των τραπεζικών οικογενειών της Αναγέννησης στη Φλωρεντία, κυρίως, όπου άρχισαν να χτίζονται παλάτια στα κέντρα των πόλεων τα οποία λειτουργούσαν και ως τράπεζες. Η αρχιτεκτονική των palazzi αναδείκνυε τον πλούτο και τη δύναμη της ίδιας της τράπεζας. Σε αντίθεση με τα υποκαταστήματα, εδώ η αρχιτεκτονική έχει στόχο την προσωπική προβολή.
Η ιστορία της αρχιτεκτονικής των τραπεζών, από την Αναγένηση μέχρι σήμερα, συντελείται από τις προσπάθειες των αρχιτεκτόνων να κάνουν αρχιτεκτονική στηριζόμενοι στα δυο παραπάνω βασικά αρχέτυπα: το ανοιχτό κατάστημα και το αδιαπέραστο κτίριο-οχυρό.
Σκοπός της εργασίας είναι η διερεύνηση της εξέλιξης των αρχετύπων αυτών καθώς και το πως απαντώνται τα στοιχεία της σταθερότητας, της στερεότητας και της μονιμότητας που φαίνονται σημαντικά στον σχεδιασμό τραπεζικών κτιρίων, από σημαντικούς αρχιτέκτονες, σε μια διαχρονική ανασκόπηση.
Photometric and spectroscopic studies of the long period low mass ratio deep contact binary KN Per
Creators: name: Gao, Xin-Yi
name: Li, Kai
name: Cai, Ya-Wen
name: Guo, Ya-Ni
name: Gao, Xing
name: Wang, Xi
name: Yin, Shi-Peng
name: Liu, Fei
name: Sun, Guo-You
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The photometric analysis and spectroscopic study of the long period low mass ratio deep contact binary KN Per were executed. The light curves of BV(RI)$_c$-band were from the Ningbo Bureau of Education and Xinjiang Observatory Telescope (NEXT) at the Xingming Observatory. Through the analysis of Wilson-Devinney (W-D) program, KN Per was found as an A-type low mass ratio deep contact binary (q=0.236, f=53.4\%). A cool spot applied on the primary component was introduced to explain the unequal maxima of the light curve. Based on the O-C analysis, we found that the rate of the increasing orbital period is $\dot{P}$ = 5.12 $\pm$ (0.30) $\times$ 10$^{-7}$ d/yr, meaning the mass transfer from the secondary component to the primary one. By analyzing the spectroscopic data, we detected chromospheric activity emission line indicators, which is corresponding to the light-curve analysis. 71 long period (P $>$ 0.5 days) contact binaries including our target were collected. The evolutionary states of all collected stars were investigated by the illustrations of mass-radius, mass-luminosity, and log M$_{T}$ - log J$_{o}$. The relations of some physical parameters were also determined. With the instability parameters of KN Per, we determined that it is a stable contact binary system at present.
description: 20 pages, 11 figures,, and 10 tables, accepted by PASP
Distance-two coloring of sparse graphs
Creators: name: Dvorak, Zdenek
name: Esperet, Louis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Consider a graph $G = (V, E)$ and, for each vertex $v \in V$, a subset $Σ(v)$ of neighbors of $v$. A $Σ$-coloring is a coloring of the elements of $V$ so that vertices appearing together in some $Σ(v)$ receive pairwise distinct colors. An obvious lower bound for the minimum number of colors in such a coloring is the maximum size of a set $Σ(v)$, denoted by $ρ(Σ)$. In this paper we study graph classes $F$ for which there is a function $f$, such that for any graph $G \in F$ and any $Σ$, there is a $Σ$-coloring using at most $f(ρ(Σ))$ colors. It is proved that if such a function exists for a class $F$, then $f$ can be taken to be a linear function. It is also shown that such classes are precisely the classes having bounded star chromatic number. We also investigate the list version and the clique version of this problem, and relate the existence of functions bounding those parameters to the recently introduced concepts of classes of bounded expansion and nowhere-dense classes.
description: 13 pages - revised version
Singapore: Downstream linkages
Creators: name: Toledano, Perrine
name: Maennling, Nicolas Wolfram
Publisher: name: Columbia University
Year: 2018
Subjects: Sustainable development
Commercial policy
Petroleum industry and trade

description: Singapore’s development since the 1960s has relied heavily on an export-led economic strategy supported by dedicated institutions providing guidance, fiscal incentives and a thriving financial and logistics sector. With little reserves of crude oil, the country has leveraged its unique geographical position as the gateway to Asian markets with world-class port infrastructure. It has attracted a number of large-scale oil refineries and petrochemical industries clustered in an export processing zone, making it the petroleum trading hub of the region. Building on Royal Dutch Shell’s initiative to set up a refinery to exploit the Asian market and taking advantage of its port facilities and strategic location in the Asia-Pacific region, the government implemented an export-driven industrial policy centred around refined oil products. The success over the years has been sustained thanks to the strong fuel consumption trends in rapidly growing Asian economies. Recognizing a shift in the region’s product demand trends, the government has moved further downstream by developing the petrochemicals sector.
Discovery of 24 radio-bright quasars at $4.9 \leq z \leq6.6$ using low-frequency radio observations
Creators: name: Gloudemans, A. J.
name: Duncan, K. J.
name: Saxena, A.
name: Harikane, Y.
name: Hill, G. J.
name: Zeimann, G. R.
name: Rottgering, H. J. A.
name: Yang, D.
name: Best, P. N.
name: Banados, E.
name: Drabent, A.
name: Hardcastle, M. J.
name: Hennawi, J. F.
name: Lansbury, G.
name: Magliocchetti, M.
name: Miley, G. K.
name: Nanni, R.
name: Shimwell, T. W.
name: Smith, D. J. B.
name: Venemans, B. P.
name: Wagenveld, J. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: High redshift quasars ($z>5$) that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio sources at $z\ge5$ are extremely rare and therefore we have started a campaign to search for new high-$z$ quasars by combining an optical dropout selection driven by the $g$, $r$, and $z$ bands from the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys with low-frequency radio observations from the LOFAR Two-metre Sky Survey (LoTSS). Currently, LoTSS covers a large fraction of the northern sky (5720 deg$^2$) to such a depth (median noise level of 83 $μ$Jy beam$^{-1}$) that about 30% of the general quasar population is detected $-$ which is a factor of 5-10 more than previous large sky radio surveys such as NVSS and FIRST, respectively. In this paper, we present the discovery of 20 new quasars (and the independent confirmation of 4) between $4.9\leq z\leq 6.6$. Out of the 24 quasars, 21 satisfy the traditional radio-loudness criterion of $R=f_{5\text{GHz}}/f_{4400A} > 10$, with the full sample spanning $R\sim$6-1000, thereby more than doubling the sample of known radio-loud quasars at $z \ge 5$. Our radio detection requirement strongly decreases the contamination of stellar sources and allows one to select these quasars in a broad redshift range. Despite selecting our quasar candidates using fewer and less conservative colour restrictions, both the optical and near-infrared colours, Ly$α$ emission line properties, and dust reddening, $E(B-V)$, measurements of our quasar sample do not deviate from the known radio-quiet quasar population, suggesting similar optical quasar properties of the radio-loud and radio-quiet quasar population at high-$z$. Our campaign demonstrates the potential for discovering new high-$z$ quasar populations through next generation radio continuum surveys.
description: 19 pages, 11 figures, Tab A1 corrected, accepted for publication in A&A
Additional file 1 of Health literacy and the role of social support in different age groups: results of a German cross-sectional survey
Creators: name: Klinger, Julia
name: Berens, Eva-Maria
name: Schaeffer, Doris
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Supplementary Material 1
Nigeria: Downstream linkages
Creators: name: Maennling, Nicolas Wolfram
name: Toledano, Perrine
Publisher: name: Columbia University
Year: 2018
Subjects: Sustainable development
Commercial policy
Petroleum industry and trade

description: Despite the presence of favourable factors for a successful downstream industry—namely, large reserves of crude oil (the 10th largest in the world), domestic demand for refined petroleum that exceeds current production and historical government efforts to encourage a domestic industry—Nigeria has rarely been able to meet its domestic demand and become a net exporter. Less than 1 per cent of national GDP comes from the downstream oil sector. Political interference in the management of the refineries has created obstacles for the sector and paved the way for persistent under-capacity utilization. Voices for full privatization of the downstream sector have risen on the grounds that “ordinary citizens are not the main beneficiaries of the Nigerian National Petroleum Corporation (NNPC)’s unreliable refineries.” Nigeria’s downstream policy to date has resulted more in draining government coffers than in promoting value addition and local benefits.
Ueber die auf dem Terrain des römischen Kastells bei Kreuznach, die Heidenmauer genannt, vom October 1858 bis November 1866 stattgefundenen Ausgrabungen
Creators: name: Schmidt, Ernst
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 47/48 (1869): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
GOGREEN: a critical assessment of environmental trends in cosmological hydrodynamical simulations at z ~ 1
Creators: name: Kukstas, Egidijus
name: Balogh, Michael L.
name: McCarthy, Ian G.
name: Bahe, Yannick M.
name: De Lucia, Gabriella
name: Jablonka, Pascale
name: Vulcani, Benedetta
name: Baxter, Devontae C.
name: Biviano, Andrea
name: Cerulo, Pierluigi
name: Chan, Jeffrey C.
name: Cooper, M. C.
name: Demarco, Ricardo
name: Finoguenov, Alexis
name: Font, Andreea S.
name: Lidman, Chris
name: Marchioni, Justin
name: McGee, Sean
name: Muzzin, Adam
name: Nantais, Julie
name: Old, Lyndsay
name: Pintos-Castro, Irene
name: Poggianti, Bianca
name: Reeves, Andrew M. M.
name: Rudnick, Gregory
name: Sarron, Florian
name: van der Burg, Remco
name: Webb, Kristi
name: Wilson, Gillian
name: Yee, Howard K. C.
name: Zaritsky, Dennis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations have shown that the environmental quenching of galaxies at z ~ 1 is qualitatively different to that in the local Universe. However, the physical origin of these differences has not yet been elucidated. In addition, while low-redshift comparisons between observed environmental trends and the predictions of cosmological hydrodynamical simulations are now routine, there have been relatively few comparisons at higher redshifts to date. Here we confront three state-of-the-art suites of simulations (BAHAMAS+MACSIS, EAGLE+Hydrangea, IllustrisTNG) with state-of-the-art observations of the field and cluster environments from the COSMOS/UltraVISTA and GOGREEN surveys, respectively, at z ~ 1 to assess the realism of the simulations and gain insight into the evolution of environmental quenching. We show that while the simulations generally reproduce the stellar content and the stellar mass functions of quiescent and star-forming galaxies in the field, all the simulations struggle to capture the observed quenching of satellites in the cluster environment, in that they are overly efficient at quenching low-mass satellites. Furthermore, two of the suites do not sufficiently quench the highest-mass galaxies in clusters, perhaps a result of insufficient feedback from AGN. The origin of the discrepancy at low stellar masses (Mstar <~ 1E10 Msun), which is present in all the simulations in spite of large differences in resolution, feedback implementations, and hydrodynamical solvers, is unclear. The next generation of simulations, which will push to significantly higher resolution and also include explicit modelling of the cold interstellar medium, may help to shed light on the low-mass tension.
description: 20 pages, 10 figures, resubmitted to MNRAS following minor revisions
title: Διερεύνηση εκμεταλλευσιμότητας ασβεστολιθικού κοιτάσματος στην Περιφέρεια Ηπείρου
Creators: name: Προϊος Γρηγοριος
Publisher: name: Technical University of Crete
Year: 2016

description: Η παρούσα διπλωματική εργασία έχει σαν αντικείμενο την εκπόνηση μιας ολοκληρωμένης μελέτης εκμετάλλευσης ασβεστολιθικού κοιτάσματος στη μαρμαροφόρο περιοχή Καλεντζίου. Στα πλαίσια αυτής της διπλωματικής εργασίας περιλαμβάνεται η μελέτη και επεξεργασία τόσο θεωρητικών όσο και εφαρμοσμένων στοιχείων.
Τα θεωρητικά στοιχεία αφορούν τη γεωλογία της περιοχής, την ανάπτυξη των τεχνικών όρων και της μεθόδου που θα χρησιμοποιηθεί καθώς και τη νομοθεσία του κράτους.
Τα εφαρμοσμένα στοιχεία αφορούν τον προσδιορισμό των ορίων της εκμετάλλευσης, τον σχεδιασμό της επιφανειακής εκμετάλλευσης, τον υπολογισμό του όγκου και της διάρκειας ζωής του λατομείου, τις περιβαλλοντικές επιπτώσεις αλλά και την αποκατάσταση του περιβάλλοντος, την οικονομοτεχνική μελέτη και τέλος τις προτάσεις για την ανασύσταση και λειτουργία του λατομείου.
Για τον υπολογισμό των ανωτέρω δημιουργήθηκε ψηφιακός χάρτης της περιοχής του λατομικού χώρου. Ο χάρτης χρησιμοποιήθηκε σε ψηφιακή μορφή έτσι ώστε να επιτυγχάνεται ακρίβεια στους υπολογισμούς, ευκολία και μείωση του χρόνου επεξεργασίας. Με δεδομένα τα όρια της εκμετάλλευσης σχεδιάστηκαν οι βαθμίδες, τα τελικά όρια της εκμετάλλευσης και ο συνολικός απολήψιμος όγκος που δίνει τη διάρκεια ζωής του εν λόγο λατομείου.
Στη συνέχεια έγινε αναλυτική περιγραφή των έργων προσπέλασης και των σταδίων της εκμετάλλευσης καθώς και χρονοδιάγραμμα των ανωτέρω εργασιών. Επίσης έγινε πλήρης και ολοκληρωμένη μελέτη της χρήσης των εκρηκτικών υλών που θα χρησιμοποιηθούν.
Ακολούθησε η οικονομοτεχνική μελέτη όλων των ανωτέρω με σκοπό την πιο ρεαλιστική προσέγγιση όσον αφορά τις ανάγκες ενός λατομείου και τα πιθανά σενάρια ανασύστασης του. Η μελέτη συμπληρώνεται με την περιβαλλοντική αποκατάσταση της περιοχής όπου θα γίνει η εκμετάλλευση.
Η διπλωματική εργασία ολοκληρώνεται με τις προτάσεις που αφορούν την πιθανότητα ανασύστασης του υπό μελέτη λατομικού χώρου.
On the Comparison between the Reliability of Units Produced by Different Production Lines
Creators: name: EL-Sagheer, Rashad M.
name: Mahmoud, Mahmoud A. W.
name: Mansour, Mahmoud M. M.
name: Aboshady, Mohamed S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The paper discusses how to evaluate the reliability of units produced by different production lines. The procedure is based on selecting independent random samples of units produced by different production lines and then evaluating reliability functions for each group of units. The comparison between these reliability functions at a given time allows manufacturing experts to evaluate the effectiveness of production lines. A statistical methodology has been taken based on the assumption that the lifetime of units produced by each product line has a Weibull Gamma distribution. Then, real-world data is used to illustrate the study's contribution to reliability theory applications.
title: Συμβολή της σεισμικής ανάκλασης στην παρακολούθηση της γεωλογικής αποθήκευσης του διοξειδίου του άνθρακα

Creators: name: Μπριντακης Ιωαννης
Publisher: name: Technical University of Crete
Year: 2016

description: Το αντικείμενο της παρούσας διπλωματικής εργασίας είναι η μοντελοποίηση και προσομοίωση της παρακολούθησης εισαγωγής διοξειδίου του άνθρακα σε ταμιευτήρα του Πρίνου. Η μεθοδολογία αυτή προσεγγίστηκε με την χρήση δισδιάστατων (2D) συνθετικών δεδομένων σεισμικής ανάκλασης, μέσω αλγορίθμων (Matlab) που αναπτύχθηκαν στο Εργαστήριο Εφαρμοσμένης Γεωφυσικής του Πολυτεχνείου Κρήτης.
Η εισαγωγή του διοξειδίου του άνθρακα  στους γεωλογικούς σχηματισμούς των ταμιευτήρων έχει κυρίως, ως αποτέλεσμα τη μεταβολή των παραμέτρων της ταχύτητας των διαμήκων σεισμικών κυμάτων και της πυκνότητάς τους.
Η τομή που σχεδιάστηκε προέκυψε από στοιχεία γεωτρήσεων του Πρίνου, ενώ ο προσδιορισμός των σεισμικών ταχυτήτων και γενικότερα οι παράμετροι του μοντέλου προέκυψαν από τη βιβλιογραφία. Ο ταμιευτήρας του Πρίνου σχηματίζεται από ένα αντίκλινο σε βάθος περίπου στα 2600m και αποτελείται από τέσσερις ψαμμιτικούς ορίζοντες που υπόκεινται των αδιαπέρατων (cap rock) εβαποριτικών  στρωμάτων.
Για την πειραματική διαδικασία (προσομοιώσεις) δημιουργήθηκαν τέσσερα διαφορετικά σενάρια εισαγωγής διοξειδίου του άνθρακα στα στρώματα των ψαμμιτών του εν λόγω ταμιευτήρα. Για κάθε σενάριο πραγματοποιήθηκε η δημιουργία και η επεξεργασία των συνθετικών καταγραφών της σεισμικής ανάκλασης. Ειδικότερα, τα βήματα επεξεργασίας που ακολουθήθηκαν είναι: η ταξινόμηση των καταγραφών κοινής πηγής σε καταγραφές Κοινού Ενδιάμεσου Σημείου (CMP sorting), η ανάλυση ταχυτήτων (Velocity Analysis), η διόρθωση Κανονικής Χρονικής Απόκλισης (Normal Moveout NMO), και τέλος η δημιουργία τομών σεισμικής υπέρθεσης (Stacking).
Στις τομές υπέρθεσης των τεσσάρων σεναρίων, μελετήθηκε η θέση του θυσάνου του CO2 μέσα στα στρώματα του ταμιευτήρα του Πρίνου. Για την καλύτερη μελέτη της διαφοροποίησης των πλατών και των χρόνων άφιξης των ανακλάσεων που προέρχονται από τα στρώματα του ταμιευτήρα, εξετάστηκε το σεισμικό ίχνος των τομών υπέρθεσης στο κέντρο του μοντέλου.
Μεταξύ των σεισμικών ιχνών εντοπίστηκαν διαφορές στα πλάτη των κυμάτων και στους χρόνους άφιξης των ανακλάσεων από τις διεπιφάνειες των στρωμάτων του ταμιευτήρα. Ειδικότερα, οι ανακλάσεις από τα ψαμμιτικά στρώματα όπου εισήχθηκε CO2 καταγράφονται σε μεγαλύτερους χρόνους σε σχέση με την αρχική κατάσταση όπου περιέχουν μόνο νερό.
Με βάση τα αποτελέσματα της εργασίας αυτής, προκύπτει ότι μελετώντας τις διαφορές στα πλάτη και στους χρόνους άφιξης των ανακλώμενων σεισμικών κυμάτων είναι δυνατό να εξαχθούν συμπεράσματα για την οριζόντια και κατακόρυφη εξάπλωση του θυσάνου του CO2 στον ταμιευτήρα.
Using $^{44}$Ti Emission to Differentiate Between Thermonuclear Supernova Progenitors
Creators: name: Kosakowski, Daniel
name: Ugalino, Mark Ivan
name: Fisher, Robert
name: Graur, Or
name: Bobrick, Alexey
name: Perets, Hagai B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The radiosotope $^{44}$Ti is produced through $α$-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of $^{44}$Ti, either through late-time light curves of SNe Ia, or directly via gamma rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of $^{44}$Ti in a nearby SN Ia or in a young galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-$M_{\rm Ch}$) and near-Chandrasekhar (near-$M_{\rm Ch}$) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by $^{44}$Ti.
Non-standard neutrino interactions in light mediator models at reactor experiments
Creators: name: Dutta, Bhaskar
name: Ghosh, Sumit
name: Li, Tianjun
name: Thompson, Adrian
name: Verma, Ankur
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Compared to other neutrino sources, the huge anti-neutrino fluxes at nuclear reactor based experiments empower us to derive stronger bounds on non-standard interactions of neutrinos with electrons mediated by light scalar/vector mediators. At neutrino energy around $200$~keV reactor anti-neutrino flux is at least an order of magnitude larger compared to the solar flux. The atomic and crystal form factors of the detector materials related to the details of the atomic structure becomes relevant at this energy scale as the momentum transfers would be small. Non-standard neutrino-electron interaction mediated by light scalar/vector mediator arises naturally in many low-scale models. We also propose one such new model with a light scalar mediator. Here, we investigate the parameter space of such low-scale models in reactor based neutrino experiments with low threshold Ge and Si detectors, and find the prospect of probing/ruling out the relevant parameter space by finding the projected sensitivity at $90 \%$ confidence level by performing a $χ^2$-analysis. We find that a detector capable of discriminating between electron recoil and nuclear recoil signal down to a very low threshold such as $5$~eV placed in reactor based experiment would be able to probe a larger region in parameter space compared to the previously explored region. A Ge (Si) detector with $10$~kg-yr exposure and 1 MW reactor anti-neutrino flux would be able to probe the scalar and vector mediators with masses below 1 keV for coupling products $\sqrt{g_νg_e}$ $\sim$ $1 \times 10^{-6}~(9.5 \times 10^{-7})$ and $1\times 10^{-7} ~(8\times 10^{-8})$, respectively.
description: Manuscript is revised, results are unchanged, updated figures, references added
Die Fälschung der Nenniger Inschriften
Creators: name: Aus'm Weerth, Ernst
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 49 (1870): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Additional file 1 of A review of the genus Muusoctopus (Cephalopoda: Octopoda) from Arctic waters
Creators: name: Golikov, Alexey V.
name: Gudmundsson, Gudmundur
name: Blicher, Martin E.
name: Jørgensen, Lis L.
name: Korneeva, Ekaterina I.
name: Olafsdottir, Steinunn H.
name: Shagimardanova, Elena I.
name: Shigapova, Leyla H.
name: Zakharov, Denis V.
name: Zimina, Olga L.
name: Sabirov, Rushan M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 1.
Local criteria for cocommutative Hopf algebras
Creators: name: Wang, Xingting
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16T05

description: We prove that a finite-dimensional cocommutative Hopf algebra $H$ is local, if and only if the subalgebra generated by the first term of its coradical filtration $H_1$ is local. In particular if $H$ is connected, $H$ is local if and only if all the primitive elements of $H$ are nilpotent.
description: 11 pages, no figures
Improving Education on Doctor–Patient Relationships and Communication: Lessons from Doctors Who Become Patients
Creators: name: Klitzman, Robert L.
Publisher: name: Columbia University
Year: 2006
Subjects: Physician and patient
Communication in medicine
Medical education
Medical education--Social aspects

description: Purpose : Medical education faces challenges in training empathetic doctors who have good patient communication skills. The author aimed to understand insights that doctors who become patients may gain concerning ways to improve doctor–patient relationships and communication in order to improve medical education. Method : From 1999 to 2002, based in New York, the author conducted two in-depth, semistructured, two-hour interviews with each of 50 doctors who had serious illnesses concerning their overlapping experiences of being health care workers and becoming patients. Interviews examined their views about these issues and how their perspectives changed as a result of patienthood. Results : These doctor–patients questioned whether and to what degree empathy could be taught, but nonetheless provided several techniques for improving communication with patients related to process and content of care. Processes included charting at the bedside rather than at the nursing station, acknowledging having kept patients waiting, and increasing awareness of nonverbal aspects of care. Content issues included communicating directly about taboo topics and being more sensitive in discussing “bad news,” adherence, and nonmedical concerns. Conclusions : Doctors reported increased sensitivity to patients’ experiences and empathy in doctor–patient communication. These findings can help in teaching doctors to see more clearly that their specific point of view differs from that of patients, and can be limiting. This study also sheds light on the wide separation between intellectual and experiential learning, which needs to be addressed further in medical education and research.
A generalized Beraha conjecture for non-planar graphs
Creators: name: Jacobsen, Jesper Lykke
name: Salas, Jesus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the partition function Z_{G(nk,k)}(Q,v) of the Q-state Potts model on the family of (non-planar) generalized Petersen graphs G(nk,k). We study its zeros in the plane (Q,v) for 1<= k <= 7. We also consider two specializations of Z_{G(nk,k)}, namely the chromatic polynomial P_{G(nk,k)}(Q) (corresponding to v=-1), and the flow polynomial Phi_{G(nk,k)}(Q) (corresponding to v=-Q). In these two cases, we study their zeros in the complex Q-plane for 1 <= k <= 7. We pay special attention to the accumulation loci of the corresponding zeros when n -> infinity. We observe that the Berker-Kadanoff phase that is present in two-dimensional Potts models, also exists for non-planar recursive graphs. Their qualitative features are the same; but the main difference is that the role played by the Beraha numbers for planar graphs is now played by the non-negative integers for non-planar graphs. At these integer values of Q, there are massive eigenvalue cancellations, in the same way as the eigenvalue cancellations that happen at the Beraha numbers for planar graphs.
description: 47 pages (LaTeX2e). Includes tex file, three sty files, and 40 Postscript figures. Minor changes from version 1. Final version published in Nucl. Phys. B
Hot scalar radiation setting bounds on the curvature coupling parameter
Creators: name: De Lorenci, V. A.
name: Gomes, L. G.
name: Moreira, E. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper addresses the interplay between vacuum and thermal local averages for massless scalar radiation near a plane wall of a large cavity where the Dirichlet boundary condition is assumed to hold. The main result is that stable thermodynamic equilibrium is possible only if the curvature coupling parameter is restricted to a certain range. In more than three spacetime dimensions such a range contains the conformal coupling, but it does not contain the minimal coupling. Since this same range for possible values of the curvature coupling parameter also applies to massive scalar radiation, it may be relevant in settings where arbitrarily coupled scalar fields are present.
description: 10 pages, LaTeX. Title changed and references added to match the published version. To appear in Classical and Quantum Gravity
CF-GODE: Continuous-Time Causal Inference for Multi-Agent Dynamical Systems
Creators: name: Jiang, Song
name: Huang, Zijie
name: Luo, Xiao
name: Sun, Yizhou
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Multi-agent dynamical systems refer to scenarios where multiple units interact with each other and evolve collectively over time. To make informed decisions in multi-agent dynamical systems, such as determining the optimal vaccine distribution plan, it is essential for decision-makers to estimate the continuous-time counterfactual outcomes. However, existing studies of causal inference over time rely on the assumption that units are mutually independent, which is not valid for multi-agent dynamical systems. In this paper, we aim to bridge this gap and study how to estimate counterfactual outcomes in multi-agent dynamical systems. Causal inference in a multi-agent dynamical system has unique challenges: 1) Confounders are time-varying and are present in both individual unit covariates and those of other units; 2) Units are affected by not only their own but also others' treatments; 3) The treatments are naturally dynamic, such as receiving vaccines and boosters in a seasonal manner. We model a multi-agent dynamical system as a graph and propose CounterFactual GraphODE (CF-GODE), a causal model that estimates continuous-time counterfactual outcomes in the presence of inter-dependencies between units. To facilitate continuous-time estimation, we propose Treatment-Induced GraphODE, a novel ordinary differential equation based on GNN, which incorporates dynamical treatments as additional inputs to predict potential outcomes over time. To remove confounding bias, we propose two domain adversarial learning based objectives that learn balanced continuous representation trajectories, which are not predictive of treatments and interference. We further provide theoretical justification to prove their effectiveness. Experiments on two semi-synthetic datasets confirm that CF-GODE outperforms baselines on counterfactual estimation. We also provide extensive analyses to understand how our model works.
description: 13 pages, 8 figures
Optimal constraint on g_NL from CMB
Creators: name: Sekiguchi, Toyokazu
name: Sugiyama, Naoshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An optimal method to constrain the non-linearity parameter g_NL of the local-type non-Gaussianity from CMB data is proposed. Our optimal estimator for g_NL is separable and can be efficiently computed in real space. Combining the exact filtering of CMB maps with the full covariance matrix, our method allows us to extract cosmological information from observed data as much as possible and obtain a tighter constraint on g_NL than previous studies. Applying our method to the WMAP 9-year data, we obtain the constraint g_NL = (-3.3 +- 2.2) 10^5, which is a few times tighter than previous ones. We also make a forecast for PLANCK data by using the Fisher matrix analysis.
description: 13 pages, 2 tables; Several tests are performed to validate the results; accepted for publication in JCAP
An evaluation for geometries, formation enthalpies, and dissociation energies of diatomic and triatomic (C, H, N, O), NO3, and HNO3 molecules from the PAW DFT method with PBE and optB88-vdW functionals
Creators: name: Han, Yong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Structural geometries, formation enthalpies, and dissociation energies of all diatomic and triatomic molecules consisting of the four basic elements C, H, N, and/or O are calculated from the projector augmented wave (PAW) density functional theory (DFT) method with the PBE and optB88-vdW exchange-correlation functionals. The calculations are also extended to two larger molecules NO3 and HNO3, which consist of 4 and 5 atoms, respectively. In total, 82 molecules or isomers are considered in the calculations. The geometric parameters including 42 bond lengths and 15 bond angles of these molecules from the planewave DFT method are highly satisfactory, relative to available experimental data. The error analysis is also performed for 49 formation enthalpies and 138 dissociation energies (including 51 atomization energies as well as corresponding bond dissociation energies). The results are also compared with the previous data from various atomic-orbitals-based methods for molecules and from similar or different planewave DFT methods for various solids and other molecules. This provides an informative and instructive evaluation, especially for calculating the large-size material systems containing these small molecules as well as for further developing DFT methods.
From “Male Bonding Rituals” to “Suicide Tuesday”: A Qualitative Study of Issues Faced by Gay Male Ecstasy (MDMA) Users
Creators: name: Klitzman, Robert L.
Publisher: name: Columbia University
Year: 2006
Subjects: Ecstasy (Drug)
Gay men--Drug use
Substance abuse--Prevention
Drugs--Side effects

description: Use of MDMA and other club drugs has increased among gay men, but questions remain concerning the use, context, and popularity of these drugs; and views of their side effects. We interviewed in-depth 12 gay MDMA users in New York. MDMA had specific appeals to gay men, who often described isolation and stigmatization. Users underwent a period of initiation and social networks often became comprised of greater numbers of other users. Club environments fostered drug use and vice versa. Awareness of potential adverse effects varied and was minimized. Appropriate educational and prevention programs are needed to address these issues, and must take into account the specific contexts of these gay men's lives.
Leveraging Voltage-Controlled Magnetic Anisotropy to Solve Sneak Path Issues in Crossbar Arrays
Creators: name: Yang, Kezhou
name: Sengupta, Abhronil
Publisher: name: arXiv
Year: 2022
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: In crossbar array structures, which serves as an "In-Memory" compute engine for Artificial Intelligence hardware, write sneak path problem causes undesired switching of devices that degrades network accuracy. While custom crossbar programming schemes have been proposed, device level innovations leveraging non-linear switching characteristics of the cross-point devices are still under exploration to improve the energy efficiency of the write process. In this work, a spintronic device design based on Magnetic Tunnel Junction (MTJ) exploiting the use of voltage-controlled magnetic anisotropy (VCMA) effect is proposed as a solution to the write sneak path problem. Additionally, insights are provided regarding appropriate operating voltage conditions to preserve the robustness of the magnetization trajectory during switching which is critical for proper switching probability manipulation.
[Anregung (45, 1999, Heft 2) / Welt und Umwelt der Bibel, 4.Jg., 1999, Heft 12 / Gymnasium 106,1999, Heft 2 ...]
Creators: name: Rabl, Josef
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 2 (1999): Forum Classicum
Ernesti, Jörg: Princeps christianus und Kaiser aller Römer. Theodosius d. Gr. im Lichte der zeitgen. Quellen
Creators: name: Redies, Michael
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Ernesti, Jörg: Princeps christianus und Kaiser aller Römer. Theodosius d. Gr. im Lichte der zeitgen. Quellen, Paderborn (usw.): Schöningh 1998. 507 S., 98,00 DM. (Paderborner theologische Studien. 25; ISBN 3-506-76275-3).
description: Forum Classicum, Nr. 2 (1999): Forum Classicum
Tight bound on relative entropy by entropy difference
Creators: name: Reeb, David
name: Wolf, Michael M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We prove a lower bound on the relative entropy between two finite-dimensional states in terms of their entropy difference and the dimension of the underlying space. The inequality is tight in the sense that equality can be attained for any prescribed value of the entropy difference, both for quantum and classical systems. We outline implications for information theory and thermodynamics, such as a necessary condition for a process to be close to thermodynamic reversibility, or an easily computable lower bound on the classical channel capacity. Furthermore, we derive a tight upper bound, uniform for all states of a given dimension, on the variance of the surprisal, whose thermodynamic meaning is that of heat capacity.
description: v2: 27 pages, 1 figure, gap in proof of Theorem 1 fixed, other minor changes, references updated; v3: 27 pages, 1 figure, small changes and improvements, one-column version of published paper