cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Implementation of mutual information and transfer entropy algorithms with FPGA-based SuperComputer
title: Υλοποίηση των αλγορίθμων mutual information και transfer entropy με υπερ-υπολογιστή βασισμένο σε αναδιατασσόμενη λογική
Creators: name: Ιορδανου Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2017

description: It is widely known that contemporary applications are bounded by massive computational demands. With conventional CPUs falling out of favor due to their limitations, the industry of Hybrid-SuperComputers using reconfigurable logic which is a growing field in the area of Computer Systems. This thesis explores the Convey Computer, and more specifically the platform HC-2ex which is a hybrid platform with increased computational capacity as well as a combination of a high-bandwidth memory interface with an architecture featuring multiple  levels of computational parallelism. This platform selected in order to efficiently map computationally intensive algorithms in modern hardware. We address two challenging problems within this framework, the first being time-series analysis by focusing on the calculation of the Mutual Information (MI) statistical value and the second being the Transfer Entropy (TE) statistical value between two time-series. The problems of Mutual Information and Transfer Entropy respectively, have been addressed by the research community for low-precision arithmetic applications, but the performance of these algorithms have not been evaluated on platforms like Convey Computer. This is the first work to extensively study of using this platform, by identifying the pros and cons of Convey Computer with computationally intensive algorithms as well as describing how these algorithms can efficiently utilized. In terms of result, Mutual Information and Transfer Entropy implementations compared with implemented architectures on other platforms like Maxeler. Compared to the reference software, the implementation of MI algorithm yielded 13x speedup as well as the implementation of TE yielded 15x speedup for high dimensional data using 32-bit precision arithmetic on Convey HC-2ex.
Early Academic Outcomes for Students of Part-Time Faculty at Community Colleges: How and Why Does Instructors' Employment Status Influence Student Success?
Creators: name: Ran, Xiaotao
name: Sanders, Jasmine
Publisher: name: Columbia University
Year: 2019
Subjects: Community colleges
College teachers, Part-time
Educational evaluation
Schedules, School
Community colleges--Administration

description: More than half of community college courses are taught by part-time faculty, and the reliance on part-time faculty to teach developmental education courses and gateway math and English courses is even more prevalent. Drawing on data from six community colleges, this study estimates the effects of part-time faculty versus full-time faculty on students’ current and subsequent course outcomes in developmental and gateway courses, using course fixed effects and propensity score matching to minimize bias arising from student self-sorting across and within courses. While students with part-time instructors have better outcomes in their current course and similar pass rates in the next course in the sequence, they are 3 to 5 percentage points less likely to enroll in that subsequent course. The negative effects on subsequent enrollment are driven by results in math courses. Notably, the estimated effects do not change substantially after controlling for instructors’ demographic characteristics and degree attainment, but the size of the estimated effects is reduced by up to 40% when the analytic model accounts for course scheduling. Results of a survey on faculty professional experiences at the six colleges in the study suggest that part-time faculty had less institutional knowledge than full-time faculty did about both academic and nonacademic services. Given that part-time faculty did not have negative effects on the pass rates of students who did enroll in subsequent courses, it appears more likely that inferior working conditions for part-time faculty, rather than inferior instructional practices, are driving the negative effects on students’ subsequent course enrollment.
title: m u d _ w o r l d   |   Το χωμάτινο δημόσιο κτίριο στις αναπτυσσόμενες κοινωνίες:
η συμμετοχή του μελλοντικού χρήστη στη διαδικασία κατασκευής και ο κοινωνικός αντίκτυπος της
title: m u d _ w o r l d   |   The earthen public building in developing societies:
the participation of the future user in the construction process and its social impact
Creators: name: Μιχελακη Μαρια
name: Παπαγιαννη Ευαγγελια
Publisher: name: Technical University of Crete
Year: 2018

description: Το ερευνητικό ενδιαφέρον αυτής της εργασίας αποτελεί η χρήση του χώματος στις διάφορες μορφές του για την κατασκευή κτιρίων, σε αναπτυσσόμενες χώρες, με δημόσιο χαρακτήρα τα οποία έχουν σαν κοινό παρονομαστή τη συμμετοχή της τοπικής κοινότητας (από και για το χρήστη).  Ταυτόχρονα εξετάζονται οι αιτίες για τις οποίες αυτή η αρχιτεκτονική δεν εφαρμόζεται ευρέως στον αναπτυγμένο κόσμο. Αρχικά αναλύεται η χρήση του χώματος σαν δομικό υλικό στο βάθος του χρόνου, οι πιο διαδομένες σύγχρονες μέθοδοι δόμησης και κάποια βασικά πλεονεκτήματα και μειονεκτήματά της. Ακολουθεί ανάλυση εφτά παραδειγμάτων δημόσιων κτιρίων, δύο από την Αφρική, τρία από την Ασία και δύο από τη Λατινική Αμερική. Αποτελείται από την αρχιτεκτονική και κατασκευαστική ανάλυση και την εξέταση του κοινωνικού αντίκτυπου του κάθε κτιρίου. Στη συνέχεια εντοπίζονται κάποια αντιπροσωπευτικά παραδείγματα που δηλώνουν πώς αντιμετωπίζεται η χωμάτινη δόμηση στις αναπτυγμένες χώρες. Τέλος, γίνεται μια σύγκριση της αντιμετώπισης της κατασκευής με χώμα μεταξύ των αναπτυγμένων και αναπτυσσόμενων κοινωνιών και παρατίθενται τα συμπεράσματα της έρευνας που προέκυψαν από τη μελέτη των παραδειγμάτων.
Does Taking a Few Courses at a Community College Improve the Baccalaureate, STEM, and Labor Market Outcomes of Four-Year College Students?
Creators: name: Liu, Vivian Yuen Ting
name: Fay, Margaret P.
Publisher: name: Columbia University
Year: 2020
Subjects: Community colleges
Educational evaluation
Community college students--Transfer
Academic achievement
College students

description: Nationally, 38.5% of the students who began at a four-year college in 2011–12 attended another college within the first six years of college entry, and more than half of these students attended a community college. Eight percent of students who began at a four-year institution took up to 10 credits at a community college during the same period. Given the number of students involved, it is helpful to better understand how this kind of postsecondary enrollment pattern affects students. This paper considers a sample of “supplementally enrolled” students who began in and primarily enrolled in four-year colleges but who also earned limited numbers of credits at community colleges. The authors use student data from the Education Longitudinal Study of 2002 and a propensity score matching approach to compare key outcomes of four-year college students who earned 1 to 10 credits at two-year colleges during their first three years at college with those of four-year college students who never earned credits in a two-year college. Many of the supplementally enrolled students took STEM courses at a two-year college. The supplementally enrolled students had higher STEM and total credits earned, higher bachelor’s degree attainment, and better employment outcomes than the students who never earned credits from a two-year college. Subgroup results also suggest that supplemental enrollment can potentially improve STEM degree attainment outcomes, particularly for low-socioeconomic-status and female students.
CMB bounds on dark matter annihilation: Nucleon energy-losses after recombination
Creators: name: Weniger, Christoph
name: Serpico, Pasquale D.
name: Iocco, Fabio
name: Bertone, Gianfranco
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: We consider the propagation and energy losses of protons and anti-protons produced by dark matter annihilation at redshifts 100
description: 5 pages, 2 figures. References added. Matches version published in PRD
Importance of solid earth structure for understanding the evolution of the Greenland ice sheet
Creators: name: Ebbing, JÖrg
name: Hopper, John R.
name: Conrad, Clinton P.
name: Milne, Glenn
name: Steffen, Rebekka
name: Afonso, Juan Carlos
name: Barletta, Valentina R.
name: Ferreira, Ana M. G.
name: Freienstein, Judith
name: Hansen, Samantha E.
name: Heincke, BjÖrn H.
name: Jones, Glenn
name: Lebedev, Sergei
name: Moorkamp, Max
name: Schutt, Derek L.
name: Wansing, Agnes
Publisher: name: Geological Society of London
Year: 2025
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences

description: LA ICPMS monazite and xenotime petrochronology data for sample RM-22-08
title: Μεταφορές του υπόσκαφου στις σύγχρονες αρχιτεκτονικές αναζητήσεις
Creators: name: Τριανταφυλλιδου Χαρα
Publisher: name: Technical University of Crete
Year: 2018

description: Για ποιο λόγο οι άνθρωποι επιλέγουν να ζήσουν κάτω από τη γη και όχι πάνω σ' αυτήν; Να δημιουργήσουν κτίσματα που προκύπτουν αφαιρετικά και όχι προσθετικά; Στα πλαίσια της παρούσας ερευνητικής εργασίας στρέφω την προσοχή μου στην αρχιτεκτονική εκείνης της κατηγορίας κτιρίων που αλληλεπιδρούν με το έδαφος τόσο ώστε να γίνονται αντιληπτά ως ένα, τα υπόσκαφα. Η γη γίνεται αρχιτεκτονική και η αρχιτεκτονική υποκλίνεται στη γη, το αρχιτεκτόνημα διαμορφώνεται σε τοπίο και το τοπίο το αντίστροφο. Στρέφοντας το βλέμμα στο παρελθόν αναζητώ τους παράγοντες και τα αίτια που οδήγησαν τους ανθρώπους στα σπλάχνα της γης, εντοπίζοντας κοινά γνωρίσματα, τρόπους και υλικά, προσπαθώντας να εισέλθω έστω και για λίγο στην σκέψη των δημιουργών και να κατανοήσω τους σκοπούς τους. Η περιπλάνηση συνεχίζεται στο παρόν, σε σύγχρονα παραδείγματα υπόσκαφης αρχιτεκτονικής, όπου απαιτείται μια προσεκτικότερη ανάγνωση στους λόγους που σήμερα ένας αρχιτέκτονας επιλέγει να βυθίσει το κτίριο μέσα στη γη και αναδύεται το ερώτημα: οι υπόσκαφες δομές συστήνουν εν τέλει λύσεις που ανταποκρίνονται σε σύγχρονα προβλήματα της κοινωνίας ή απλά αποτελούν μια πετυχημένη φόρμουλα η οποία επικαλύπτει μια πιθανή έλλειψη μορφολογικής έκφρασης στη σύγχρονη αρχιτεκτονική;
title: Επαναχρήση βιομηχανικής πολιτιστικής κληρονομιάς: προϋποθέσεις και αρχές

title: Rehabilitation of industrial cultural heritage: requirements and principles
Creators: name: Ανδριωτη Νεφελη
Publisher: name: Technical University of Crete
Year: 2018

description: Η προκείμενη μελέτη έχει ως αφετηρία την ιστορική ανασκόπηση της εκβιομηχάνισης της Ελλάδας, την απογείωση της βιομηχανικής της δραστηριότητας και το στάδιο της αποβιομηχάνισης της. Στο δεύτερο κεφάλαιο εξετάζεται η εμφάνιση του κλάδου της βιομηχανικής αρχαιολογίας, γεγονός που διεύρυνε το αντικείμενο προστασίας της πολιτιστικής κληρονομιάς και αναγνωρίστηκε η ιστορική, κοινωνική και τεχνολογική αξία των ανενεργών βιομηχανικών μονάδων. Το τρίτο κεφάλαιο πραγματεύεται το σύνολο των αξιών που διέπουν τη βιομηχανική κληρονομιά καθώς και η αναπόσπαστη σχέση αυτής με το τοπίο, βασικοί παράγοντες που χρειάζεται να ληφθούν υπόψη στον σχεδιασμό της επανάχρησης. Ακόμη, η ύπαρξη βιομηχανικού εξοπλισμού καθιστά επιτακτική την ανάγκη της διάσωσης του και της ανάδειξης του, στο πλαίσιο της νέας χρήσης.
 Σκοπός της συγκεκριμένης έρευνας είναι η διερεύνηση των παραγόντων που επηρεάζουν τη διαδικασία της λήψης των αποφάσεων για την ανάπλαση των βιομηχανικών κατάλοιπων. Οι αξίες που διέπουν τα ανενεργά κελύφη, η ταυτότητα του τόπου και η διάσωση του μηχανολογικού εξοπλισμού συνθέτουν ένα μοναδικό πλέγμα, που καθοδηγεί τη διαδικασία λήψης των αποφάσεων επανάχρησης.
Kein Ausschluss des allgemein-zivilrechtlichen Anspruchs auf Herausgabe nach § 985 BGB durch das Rückerstattungsrecht - zugleich: Besprechung von Sabine Rudolph „Restitution von Kunstwerken aus jüdischem Besitz“
Creators: name: Weller, Matthias
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: Kunstrechtsspiegel, Nr. 1 (2009): Kunstrechtsspiegel
title: «Ενδιάμεσος» χώρος αστικής συμπερίληψης_ επανάχρηση Ιταλικού Στρατώνα/ αντικατάσταση κτιρίου πρώην υποκαταστήματος ΙΚΑ
title: “In-Between” space of urban inclusion_ Italian Caserne’s restoration/reconstruction of a neighboring vacant public building
Creators: name: Ραυτοπουλου Ευριδικη-Χριστινα
name: Τσιρωνη Φωτεινη
Publisher: name: Technical University of Crete
Year: 2018

description: Αφετηριακή σκέψη της διπλωματικής εργασίας αποτέλεσε το φαινόμενο των αστέγων. Ζήτημα που καθίσταται επίκαιρο λόγω του μεγέθους του πληθυσμού που αφορά στο πρόβλημα, της ορατότητάς του, της διάρκειας παραμονής στην κατάσταση της αστεγίας και του πλαισίου στο οποίο συντελείται. Επιπλέον, στα Χανιά, όπου χωροθετείται και η επέμβασή μας, εντοπίζεται αφενός ο  εκτοπισμός των μόνιμων κατοίκων λόγω της  διάδοσης των πλατφορμών βραχυχρόνιας μίσθωσης διαμερισμάτων ή δωματίων και αφετέρου ένα μεγάλο ποσοστό κτιριακού αποθέματος που για διάφορους λόγους παραμένει ανενεργό, παράγοντες που οδηγούν στη διόγκωση του φαινομένου.
Η επέμβαση αφορά στη δημιουργία μίας δομής στέγασης ημιμόνιμου χαρακτήρα, εντός αστικού ιστού, για ανθρώπους που αντιμετωπίζουν στεγαστικό πρόβλημα, καθώς και χρήσεων που καλύπτουν καθημερινές προσωπικές δραστηριότητες (ξεκούραση, υγιεινή, διατροφή, σκέψη, ονειροπόληση) και αναφέρονται σε όσους βιώνουν την έλλειψη «σπιτιού»(έλλειψη καταφυγίου, ιδιωτικότητας, δικαιωμάτων, ιδιοκτησίας ενός χώρου, και υποκειμενικών ζητημάτων, όπως έλλειψη ταυτότητας, χώρου ανάπτυξης συναισθηματικών σχέσεων, της αίσθησης του ανήκειν κλ.π). Πιο συγκεκριμένα, προτείνεται η επανάχρηση και αποκατάσταση του ιστορικού κτιρίου του Ιταλικού Στρατώνα και η αντικατάσταση του γειτονικού κτιρίου του πρώην υποκαταστήματος ΙΚΑ, τα οποία βρίσκονται σε μια κεντρική περιοχή(Δημοτικός Κήπος, Πάρκο Ειρήνης και Φιλίας, Σχολεία οδού Κοραή και Στάδιο Χανιων) που χαρακτηρίζεται από περιφραγμένες, μονολειτουργικές χρήσεις και υπεροχή του αδόμητου σε σχέση με το δομημένο περιβάλλον, διαμορφώνοντας έτσι ένα μεγάλο αστικό «κενό».
Βασική επιδίωξη υπήρξε τα κτίρια να λειτουργούν ως στεγασμένος δημόσιος χώρος, φιλικός προς τους ανθρώπους χωρίς στέγη, αλλά παράλληλα και ως «ενδιάμεσος» χώρος οπού μπορεί να λάβει χώρα η υβριδοποίηση, δηλαδή η ισότιμη συνεχής διαπραγμάτευση, αλληλεπίδραση και συμπερίληψη. Έτσι, επιχειρείται η ενεργοποίηση της ευρύτερης περιοχής μέσω της δημιουργίας αστικών συνδέσεων και νέων κτιριακών όγκων και την οργάνωση του αστικού πρασίνου.
title: „VITAL 3.0“: Neue und aktualisierte Vorschläge für Referenzdosen von Lebensmittelallergenen: Stellungnahme Nr. 015/2020 des BfR vom 9. März 2020
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2020
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2020, no. 015
Superfluid qubit systems with ring shaped optical lattices
Creators: name: Amico, Luigi
name: Aghamalyan, Davit
name: Crepaz, H.
name: Auksztol, F.
name: Dumke, R.
name: Kwek, L. -C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study an experimentally feasible qubit system employing neutral atomic currents. Our system is based on bosonic cold atoms trapped in ring-shaped optical lattice potentials. The lattice makes the system strictly one dimensional and it provides the infrastructure to realize a tunable ring-ring interaction. Our implementation combines the low decoherence rates of of neutral cold atoms systems, overcoming single site addressing, with the robustness of topologically protected solid state Josephson flux qubits. Characteristic fluctuations in the magnetic fields affecting Josephson junction based flux qubits are expected to be minimized employing neutral atoms as flux carriers. By breaking the Galilean invariance we demonstrate how atomic currents through the lattice provide a implementation of a qubit. This is realized either by artificially creating a phase slip in a single ring, or by tunnel coupling of two homogeneous ring lattices. The single qubit infrastructure is experimentally investigated with tailored optical potentials. Indeed, we have experimentally realized scaled ring-lattice potentials that could host, in principle, $n\sim 10$ of such ring-qubits, arranged in a stack configuration, along the laser beam propagation axis. An experimentally viable scheme of the two-ring-qubit is discussed, as well. Based on our analysis, we provide protocols to initialize, address, and read-out the qubit.
description: 14 revtex4-1 pages, 7 figs; to be published in Scientific Reports
title: Μελέτη διαταραχών του φάσματος του αυτισμού στο χώρο και το παιχνίδι
title: Study for autism spectrum disorders about space and playing
Creators: name: Μαγκαφωση Αντιγονη
Publisher: name: Technical University of Crete
Year: 2018

description:      Στην παρούσα ερευνητική εργασία εξετάζεται η έννοια της διαταραχή του φάσματος του αυτισμού, ποια είναι τα νευροψυχολογικά και συμπεριφορικά χαρακτηριστικά ενός ατόμου με αυτισμό και πως αυτά επηρεάζουν την καθημερινότητα και την κοινωνικοποίηση.
     Αφού οριστεί τι σημαίνει αυτισμός και ποιες είναι οι ‘’ανεπάρκειες’’ και οι διαφορές που εμφανίζονται σε σύγκριση με το ‘’τυπικό’’ μοντέλο συμπεριφοράς, θα εξεταστεί αν ο σχεδιασμός  χώρου με συγκεκριμένα χαρακτηριστικά ,θα μπορούσε να συμβάλλει στην βέλτιστη διαχείριση της αναπτυξιακής διαταραχής. Πώς επηρεάζει ,δηλαδή, ο δομημένος ή μη χώρος, είτε αρνητικά , είτε θετικά ένα άτομο με αυτισμό. Αναζητούνται εκείνα τα στοιχεία που λαμβάνονται υπόψιν κατά τη διαδικασία του σχεδιασμού και συμβάλλουν στην αρμονική αλληλεπίδραση του αυτιστικού ατόμου με το περιβάλλον, στην  ψυχοσωματική του υγεία και την κοινωνικοποίηση του.
       Εν κατακλείδι, δεδομένου ότι το παιχνίδι αποτελεί βασικό εργαλείο εξέλιξης, γνώσης και κοινωνικοποίησης για κάθε παιδί, θα οριστεί τι σημαίνει και πως εξελίσσεται η έννοια του παιχνιδιού για ένα παιδί με αυτισμό, ποιες είναι οι διαφορές και οι δυσκολίες σε σχέση με το ‘’τυπικό’’ μοντέλο ανάπτυξης και πως αυτό επηρεάζει την εικόνα και την αναπτυξιακή πορεία του αυτιστικού υποκειμένου, κατά την παιδική ηλικία αλλά και μετέπειτα. Τέλος θα αναλυθούν έννοιες όπως  αυτές του παράλληλου- συνεργατικού παιχνιδιού, δομημένου- ελεύθερου, λειτουργικού- συμβολικού κ.α. και θα γίνει η επιλογή των μέσων και του είδους, παιχνιδιού και ερεθισμάτων που συμβάλλουν στον σχεδιασμό χώρων παιχνιδιού, ως απάντηση στα θεωρητικά ερωτήματα που έχουν τεθεί.
Inefficiency of classically simulating linear optical quantum computing with Fock-state inputs
Creators: name: Gard, Bryan T.
name: Olson, Jonathan P.
name: Cross, Robert M.
name: Kim, Moochan B.
name: Lee, Hwang
name: Dowling, Jonathan P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Aaronson and Arkhipov recently used computational complexity theory to argue that classical computers very likely cannot efficiently simulate linear, multimode, quantum-optical interferometers with arbitrary Fock-state inputs [Aaronson and Arkhipov, Theory Comput. 9, 143 (2013)]. Here we present an elementary argument that utilizes only techniques from quantum optics. We explicitly construct the Hilbert space for such an interferometer and show that its dimension scales exponentially with all the physical resources. We also show in a simple example just how the Schrödinger and Heisenberg pictures of quantum theory, while mathematically equivalent, are not in general computationally equivalent. Finally, we conclude our argument by comparing the symmetry requirements of multiparticle bosonic to fermionic interferometers and, using simple physical reasoning, connect the nonsimulatability of the bosonic device to the complexity of computing the permanent of a large matrix.
description: 7 pages, 1 figure Published in PRA Phys. Rev. A 89, 022328 (2014)
ADM reduction of Einstein action and black hole entropy
Creators: name: Park, I. Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reduce the 4D Einstein-Hilbert action to a constant-radius hypersurface of foliation. The resulting theory is a scalar theory defined on a 3D hypersurface of the original black hole background, and has an exponential potential. Once the the hypersurface is located at the Schwarzschild radius, the 3D theory is effectively reduced to a 2D Liouville type theory. We compute {the entropy associated with the hypersurface intrinsic degrees of freedom}, and show that its leading order reproduces the Bekenstein-Hawking area law. The subleading terms come in logarithm/inverse powers of the area.
description: 27 pages, 1 figure, reduction procedure improved and expanded (details in Appendix A), ref added
Regularization of the slip length divergence in water nanoflows by inhomogeneities at the Angstrom scale
Creators: name: Sega, Marcello
name: Sbragaglia, Mauro
name: Biferale, Luca
name: Succi, Sauro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We performed non-equilibrium Molecular Dynamics simulations of water flow in nano-channels with the aim of discriminating {\it static} from {\it dynamic} contributions of the solid surface to the slip length of the molecular flow. We show that the regularization of the slip length divergence at high shear rates, formerly attributed to the wall dynamics, is controlled instead by its static properties. Surprisingly, we find that atomic displacements at the Angstrom scale are sufficient to remove the divergence of the slip length and realize the no-slip condition. Since surface thermal fluctuations at room temperature are enough to generate these displacements, we argue that the no-slip condition for water can be achieved also for ideal surfaces, which do not present any surface roughness.
The U.S. Biogas Potential: Putting the pieces together to replace 50% of fossil fuels in transportation
Creators: name: Schuppenhauer, Michael Rainer
name: Kim, Mirea
name: Chu, Jacob
Publisher: name: Zenodo
Year: 2014
Subjects: biogas, biomass, crop residues, energy crops, waste, organic waste

description: The U.S. has significant resources for the production of biogas (an advanced biofuel), including energy crops, crop residues, manure, organic waste streams, landfill gas and stranded methane. Until now, there has not been a complete, county by county accounting of the biogas resources, potential and its economic impact, necessary to inform and drive decision makers to support policy and industry. The opportunity lies in replacing 50% of fossil transportation fuel with renewable, domestic, advanced biofuels, using proven technology at compelling economics for investors and consumers, while creating a significant number of jobs in rural economies, and lowering the U.S. green house gas (methane) footprint with low carbon fuels. This study is based upon work supported by the U.S. Department of Energy, in collaboration with researchers from the USDA ARS, NREL, UC Berkeley and Mango Materials.
 FARMATIC is since 50 years a leading international biogas and waste water EPC, delivering design, engineering, technology, components and turn-key plants to customers from agriculture, industry, and municipalities.
A Natural History of Silent Brain Syndrome over 36 Years: A case report
Creators: name: Pirakitikulr, Nathan
name: Tse, David T.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: A 34-year-old Caucasian male who underwent a ventricular shunt at age 21 presented with bilateral enophthalmos, poor eyelid-globe apposition and exposure keratopathy characteristic of silent brain syndrome. Progressive enophthalmos and corneal decompensation were documented in serial photographs and radiographic studies over 36 years. Over this period, no sequelae of shunt over-drainage were observed. A lumbar puncture at the last follow-up measured CSF opening pressure to be within the normal range. Additional systemic findings included pneumosinus dilatans, loss of adipose tissue in the temporalis fossa and atrophy of the dorsal interossei of the hand. Surgical interventions to preserve ocular function included insertion of orbital floor wedge and sheet implants, sheet orbital roof implants, and retroplacement of canthal tendons. This report chronicles the long-term clinical course of a patient with silent brain syndrome. The systemic changes suggest factors beyond low intracranial pressure may contribute to the pathogenesis of the condition in our patient.
CMB Aberration and Doppler Effects as a Source of Hemispherical Asymmetries
Creators: name: Notari, Alessio
name: Quartin, Miguel
name: Catena, Riccardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Our peculiar motion with respect to the CMB rest frame represents a preferred direction in the observed CMB sky since it induces an apparent deflection of the observed CMB photons (aberration) and a shift in their frequency (Doppler). Both effects distort the multipoles $a_{\ell m}$'s at all $\ell$'s. Such effects are real as it has been recently measured for the first time by Planck according to what was forecast in some recent papers. However, the common lore when estimating a power spectrum from CMB is to consider that Doppler affects only the $\ell=1$ multipole, neglecting any other corrections. In this work we use simulations of the CMB sky in a boosted frame with a peculiar velocity $β= v/c = 1.23 \times 10^{-3}$ in order to assess the impact of such effect on power spectrum estimations in different regions of the sky. We show that the boost induces a north-south asymmetry in the power spectrum which is highly significant and non-negligible, of about (0.58 $\pm$ 0.10)% for half-sky cuts when going up to $\ell$ = 2500. We suggest that these effects are relevant and may account for some of the north-south asymmetries seen in the Planck data, being especially important at small scales. Finally we analyze the particular case of the ACT experiment, which observed only a small fraction of the sky and show that it suffers a bias of about 1% on the power spectrum and of similar size on some cosmological parameters: for example the position of the peaks shifts by 0.5% and the overall amplitude of the spectrum is about 0.4% lower than a full-sky case.
description: 13 pages, 5 figures
College Acceleration for All? Mapping Racial/Ethnic Gaps in Advanced Placement and Dual Enrollment Participation
Creators: name: Xu, Di
name: Fink, John
name: Solanki, Sabrina
Publisher: name: Columbia University
Year: 2019
Subjects: Dual enrollment
Advanced placement programs (Education)
Discrimination in education
Academic achievement--Social aspects
Minorities--Education

description: This paper estimates the patterns and sources of White–Black and White–Hispanic enrollment gaps in Advancement Placement (AP) and dual enrollment programs across several thousand school districts and metropolitan areas in the United States. By merging several data sources, the authors show that both AP and dual enrollment participation gaps vary substantially across districts. The vast majority of districts have racial/ethnic gaps in AP and dual enrollment participation, and about a quarter of districts have racial/ethnic gaps equal to or larger than 10 and 7 percentage points for AP and dual enrollment, respectively. Available district-level characteristics and state-level policies explain much more of the geographic variation in AP participation gaps as compared with dual enrollment participation gaps, and local factors (either district-level or metro-level characteristics) dominate state-level factors in shaping these racial/ethnic participation gaps. Among all the available district-level characteristics, racial/ethnic composition and racial/ethnic income disparity are the strongest correlates of participation gaps, where districts with larger proportions of Black and Hispanic students and greater racial/ethnic income disparity are associated with larger racial/ethnic gaps in both AP and dual enrollment participation.
René van Royen / Sunnyva van der Vegt: Asterix auf großer Fahrt
Creators: name: Granobs, Roland
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: René van Royen / Sunnyva van der Vegt: Asterix auf großer Fahrt. München: Beck 2001. 176 S. (ISBN 3-406-45904-8).
description: Forum Classicum, Nr. 1 (2002): Forum Classicum
Safety Aware Autonomous Path Planning Using Model Predictive Reinforcement Learning for Inland Waterways
Creators: name: Vanneste, Astrid
name: Vanneste, Simon
name: Vasseur, Olivier
name: Janssens, Robin
name: Billast, Mattias
name: Anwar, Ali
name: Mets, Kevin
name: De Schepper, Tom
name: Mercelis, Siegfried
name: Hellinckx, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In recent years, interest in autonomous shipping in urban waterways has increased significantly due to the trend of keeping cars and trucks out of city centers. Classical approaches such as Frenet frame based planning and potential field navigation often require tuning of many configuration parameters and sometimes even require a different configuration depending on the situation. In this paper, we propose a novel path planning approach based on reinforcement learning called Model Predictive Reinforcement Learning (MPRL). MPRL calculates a series of waypoints for the vessel to follow. The environment is represented as an occupancy grid map, allowing us to deal with any shape of waterway and any number and shape of obstacles. We demonstrate our approach on two scenarios and compare the resulting path with path planning using a Frenet frame and path planning based on a proximal policy optimization (PPO) agent. Our results show that MPRL outperforms both baselines in both test scenarios. The PPO based approach was not able to reach the goal in either scenario while the Frenet frame approach failed in the scenario consisting of a corner with obstacles. MPRL was able to safely (collision free) navigate to the goal in both of the test scenarios.
description: \c{opyright} 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
A Complex Ecosystem: A Qualitative Investigation Into Dynamics Affecting the Implementation of College Advising Redesigns
Creators: name: Klempin, Serena Constance
name: Pellegrino, Lauren
Publisher: name: Columbia University
Year: 2020
Subjects: Counseling in higher education
Community colleges
Educational technology--Study and teaching
Educational change--Evaluation
Community college students--Services for
Education, Higher--Administration

description: Academic advising plays a critical role in student engagement and persistence at community colleges, and colleges are increasingly adopting advising technologies to increase their capacity to support students. However, much remains unknown about the process of planning for and implementing technology-mediated advising redesigns. To explore these reforms’ complex dynamics, we adapted Urie Bronfenbrenner’s ecological systems theory of human development, conceiving of the student advising experience as embedded in three interrelated contexts: the external environment (the political, economic, and cultural environment outside the institution), the institutional environment (where changes in practice are implemented), and the interpersonal environment (where advising interactions occur). Using interview data collected from a diverse group of stakeholders at two community colleges and two broad-access four-year institutions, we identified several dynamics that have implications for practitioners, funders, and policymakers looking to enact technology-mediated advising reforms: External dynamics included involvement in national college completion organizations and initiatives, state policies related to college completion, and state and local economic conditions. Institutional dynamics included resource constraints, the degree to which advising policies and procedures were centralized, and approaches to managing institutional change. Finally, interpersonal dynamics included individual advising approaches, advising capacity, and reactions to technology.
Non-additive dynamical Casimir atomic phases
Creators: name: Impens, François
name: Ttira, Claudio Ccapa
name: Neto, Paulo A. Maia
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We discuss a fundamental property of open quantum systems: the quantum phases associated with their dynamical evolution are non-additive. We develop our argument by considering a multiple-path atom interferometer in the vicinity of a perfectly conducting plate. The coupling with the environment induces dynamical corrections to the atomic phases. In the specific example of a Casimir interaction, these corrections reflect the interplay between field retardation effects and the external atomic motion. Non-local open-system Casimir phase corrections are shown to be non-additive, which follows directly from the unseparability of the influence functional describing the coupling of the atomic waves to their environment. This is an unprecedented feature in atom optics, which may be used in order to isolate non-local dynamical Casimir phases from the standard quasi-static Casimir contributions.
description: 5 pages, 2 Figures. Final version published in Journal of Physics B
Jan R. Stenger (Hg.): Spätantike Konzeptionen von Literatur
Creators: name: Döpp, Siegmar
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Jan R. Stenger (Hg.): Spätantike Konzeptionen von Literatur, Heidelberg: Winter 2015, 237 S. (ISBN 978-3-8253-6523-3).
description: Forum Classicum, Nr. 1 (2016): Forum Classicum
Hydrodynamic instability in warped astrophysical discs
Creators: name: Ogilvie, Gordon I.
name: Latter, Henrik N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Warped astrophysical discs are usually treated as laminar viscous flows, which have anomalous properties when the disc is nearly Keplerian and the viscosity is small: fast horizontal shearing motions and large torques are generated, which cause the warp to evolve rapidly, in some cases at a rate that is inversely proportional to the viscosity. However, these flows are often subject to a linear hydrodynamic instability, which may produce small-scale turbulence and modify the large-scale dynamics of the disc. We use a warped shearing sheet to compute the oscillatory laminar flows in a warped disc and to analyse their linear stability by the Floquet method. We find widespread hydrodynamic instability deriving from the parametric resonance of inertial waves. Even very small, unobservable warps in nearly Keplerian discs of low viscosity can be expected to generate hydrodynamic turbulence, or at least wave activity, by this mechanism.
description: 17 pages, 7 figures, revised version, to be published in MNRAS
title: Αρχιτεκτονική και υλοποιήση σε αναδιατασσόμενη λογική του αλγορίθμου T-Coffee για συνένωση κομματιών DNA
Creators: name: Λάκκα Ματίνα
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Detecting non-Abelian geometric phase in circuit QED
Creators: name: Peng, Man-Lv
name: Zhou, Jian
name: Xue, Zheng-Yuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme for detecting noncommutative feature of the non-Abelian geometric phase in circuit QED, which involves three transmon qubits capacitively coupled to an one-dimensional transmission line resonator. By controlling the external magnetic flux of the transmon qubits, we can obtain an effective tripod interaction of our circuit QED setup. The noncommutative feature of the non-Abelian geometric phase is manifested that for an initial state undergo two specific loops in different order will result in different final states. Our numerical calculations show that this difference can be unambiguously detected in the proposed system.
American Honors: The Life and Death of a Public-Private Partnership
Creators: name: Jaggars, Shanna
name: Fay, Margaret P.
name: Farakish, Negar
Publisher: name: Columbia University
Year: 2019
Subjects: Public-private sector cooperation
Community colleges
Community college students--Transfer
Academic achievement

description: In fall 2012, a public-minded privately held firm, Quad Learning (QL), partnered with two community colleges to pilot a new program dubbed “American Honors” (AH), which was designed to help academically talented community college students overcome the challenges of transferring to more selective four-year destinations. By fall 2018, QL had dissolved the AH program for domestic students. This paper traces the components of the program’s socially conscious theory of change and its for-profit business model, and the tensions between the two. We explore the meaning of AH’s various components to students, faculty, and administrators, and we estimate its impact on students’ academic outcomes and offer takeaways for future public-private ventures.
Fluctuations in Relativistic Causal Hydrodynamics
Creators: name: Kumar, Avdhesh
name: Bhatt, Jitesh R.
name: Mishra, Ananta P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Formalism to calculate the hydrodynamic fluctuations by applying the Onsager theory to the relativistic Navier-Stokes equation is already known. In this work, we calculate hydrodynamic-fluctuations within the framework of the second order hydrodynamics of Müller, Israel and Stewart and its generalization to the third order. We have also calculated the fluctuations for several other causal hydrodynamical equations. We show that the form for the Onsager-coefficients and form of the correlation-functions remains same as those obtained by the relativistic Navier-Stokes equation and it does not depend on any specific model of hydrodynamics. Further we numerically investigate evolution of the correlation function using the one dimensional boost-invariant (Bjorken) flow. We compare the correlation functions obtained using the causal hydrodynamics with the correlation-function for the relativistic Navier-Stokes equation. We find that the qualitative behavior of the correlation-functions remain same for all the models of the causal hydrodynamics.
description: 22 pages, 12 figures, (some typographical errors are corrected, new references and figures have been added, accepted for publication in Nuclear Physics A.)
Robertus Spataro (Hg.): Studia Latinitati provehendae. Acta Conventus nationum
Creators: name: Fritsch, Andreas
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Robertus Spataro (Hg.): Studia Latinitati provehendae. Acta Conventus nationum. Roma: LAS (= Libreria Ateneo Salesiano. Flumina ex Fontibus 12.) 2015. 151 S. (ISBN 978-88-213- 1186-4).
description: Forum Classicum, Nr. 1 (2016): Forum Classicum
DER NEUE PAULY. Supplemente 8. Historische Gestalten der Antike. Rezeption in Literatur, Kunst und Musik
Creators: name: Werner, Jürgen
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: DER NEUE PAULY. Supplemente 8. Historische Gestalten der Antike. Rezeption in Literatur, Kunst und Musik. Hg. v. Peter von Möllendorff u.a. J. B. Metzler. Stuttgart, Weimar 2013. IX, 1184 S. (ISBN 978-3-476-02468-8).
description: Forum Classicum, Nr. 2 (2016): Forum Classicum
The Politics of Music: Women’s Music Education in the United States in the late 18th Century
Creators: name: Evans, Christa Pehl
Publisher: name: Columbia University
Year: 2019
Subjects: Music--Instruction and study
Women musicians
Eighteenth century
Women--Education
Musicology

description: This article provides a background for these varying streams of thought and examines their intersection at the debate about what type of music is suitable for women to learn. That women should learn music was not a point of contingency, but how they should learn, what type of music they should study, and what role music would play in their lives were subjects of discussion.
Random fields representations for stochastic elliptic boundary value problems and statistical inverse problems
Creators: name: Nouy, Anthony
name: Soize, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 60G60, 35R30, 65M32, 60H35, 62F99, 35J70

description: This paper presents new results allowing an unknown non-Gaussian positive matrix-valued random field to be identified through a stochastic elliptic boundary value problem, solving a statistical inverse problem. A new general class of non-Gaussian positive-definite matrix-valued random fields, adapted to the statistical inverse problems in high stochastic dimension for their experimental identification, is introduced and its properties are analyzed. A minimal parametrization of discretized random fields belonging to this general class is proposed. Using this parametrization of the general class, a complete identification procedure is proposed. New results of the mathematical and numerical analyzes of the parameterized stochastic elliptic boundary value problem are presented. The numerical solution of this parametric stochastic problem provides an explicit approximation of the application that maps the parameterized general class of random fields to the corresponding set of random solutions. This approximation can be used during the identification procedure in order to avoid the solution of multiple forward stochastic problems. Since the proposed general class of random fields possibly contains random fields which are not uniformly bounded, a particular mathematical analysis is developed and dedicated approximation methods are introduced. In order to obtain an algorithm for constructing the approximation of a very high-dimensional map, complexity reduction methods are introduced and are based on the use of low-rank approximation methods that exploit the tensor structure of the solution which results from the parametrization of the general class of random fields.
description: European Journal of Applied Mathematics, 2014
Proceedings of the 18th International Workshop on Logical Frameworks and Meta-Languages: Theory and Practice
Creators: name: Ciaffaglione, Alberto
name: Olarte, Carlos
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Logical frameworks and meta-languages form a common substrate for representing, implementing and reasoning about a wide variety of deductive systems of interest in logic and computer science. Their design, implementation and their use in reasoning tasks, ranging from the correctness of software to the properties of formal systems, have been the focus of considerable research over the last two decades. This workshop brings together designers, implementors and practitioners to discuss various aspects impinging on the structure and utility of logical frameworks, including the treatment of variable binding, inductive and co-inductive reasoning techniques and the expressiveness and lucidity of the reasoning process.
description: This volume contains the proceedings of the workshop Logical Frameworks and Meta-Languages: Theory and Practice (LFMTP'23)
Simulation studies on laser pulse stability for Dalian Coherent Light Source
Creators: name: Deng, Haixiao
name: Zhang, Meng
name: Gu, Duan
name: Liu, Bo
name: Gu, Qiang
name: Wang, Dong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Dalian Coherent Light Source will use a 300MeV LINAC to produce fully coherent photon pulses in the wavelength range between 150-50nm by high gain harmonic generation free electron laser (FEL) scheme. To generate stable FEL pulses, stringent tolerance budget is required for the LINAC output parameters, such as the mean beam energy stability, electron bunch arrival time jitter, peak current variation and the transverse beam position offset. In order to provide guidance for the design of the Dalian Coherent Light Source, in this paper, the sensitivity of FEL pulse energy fluctuation to various error sources of the electron bunch was performed using intensive start-to-end FEL simulations.
description: 4 pages, 7 figures, 2 tables, to be published in Chinese Physics C
title: Διερεύνηση των παραμέτρων, σύνθεσης και υλοποιήσης, του λογισμικού XILINX ISE, προκειμένου να επιτευχθεί η βέλτιστη κατανάλωση ισχύος, των FPGA κυκλωμάτων, Virtex II Pro, κατά τη χρήση των ευρέως διαδεδομένων αλγορίθμων ασφαλείας
Creators: name: Ντόρτου Ειρήνη
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
title: Ανάπτυξη γραφικού περιβάλλοντος για την ανάλυση δυναμικής ευστάθειας συστημάτων ηλεκτρικής ενέργειας
title: Graphical user interface development for the dynamic stability analysis of power systems
Creators: name: Ψυχας Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2017

description: Η παρούσα διπλωματική εργασία έχει σκοπό την περιγραφή και χρήση του λογισμικού που αναπτύχθηκε για την ανάλυση δυναμικής ευστάθειας συστημάτων ηλεκτρικής ενέργειας. Το εργαλείο αυτό αναπτύχθηκε κατά το ακαδημαϊκό έτος 2013-2014 από τον Κωνσταντίνο Ραφαήλ Κουσουλίδη, απόφοιτο της Σχολής Μηχανικών Παραγωγής και Διοίκησης του Πολυτεχνείου Κρήτης υπό την επίβλεψη του κ. Φώτιου Κανέλλου, για την ανάλυση ροής φορτίου σε συστήματα ηλεκτρικής ενέργειας.

Σε συνέχεια της εργασίας αυτής, αναπτύχθηκε το τμήμα της ανάλυσης δυναμικής ευστάθειας που έχει σαν σκοπό την ανάλυση της συμπεριφοράς ενός συστήματος ηλεκτρικής ενέργειας, στο οποίο συμβαίνουν κάποια γεγονότα, τα οποία επιφέρουν άρση της ευστάθειας αυτής.