cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Efficient network interface design for low cost distributed systems
title: Σχεδίαση αποδοτικής διεπαφής δικτύου για κατανεμημένα συστήματα χαμηλού κόστους
Creators: name: Αμουργιανος-Λορεντζος Βασιλειος
Publisher: name: Technical University of Crete
Year: 2017

description: Cyber-Physical Systems (CPSs) are widely used in many applications that require physical inputs and outputs. A CPS usually combines a set of hardware-software components to achieve optimal application execution in terms of performance and energy consumption. An important ability and requirement of CPSs is to be scalable through modularity, making them cost effective and providing enough computational power for the assigned tasks.

This thesis is the result of our efforts to design and implement a cost-effective yet efficient Network Interface (NI) for the AXIOM CPS board and system to achieve said modularity. The NI has to achieve high throughput, with remote access to the memory, and several different transfer types to accommodate the project's needs. It also has to be cost effective, with the minimum possible usage of the board's available resources and follow certain guidelines for easy connectivity.
title: Reconstruction and graphical modeling of aorta from MRI images
title: Ανακατασκευή και γραφική μοντελοποίηση αορτής από εικόνες MRI
Creators: name: Κουλουντζιος Παναγιωτης
Publisher: name: Technical University of Crete
Year: 2017

description: This thesis was motivated by the need for both quick and accurate computer-aided measurement of human organs, which is vital for an early medical diagnosis. It deals with the thoracic aorta, whose abnormalities are often related to cardiovascular diseases. Also, it presents an innovative approach for semi-automated reconstruction and NURBS-based simulation, which has been applied on real patient data sets. We developed a basic pipeline, which starts with processing MRI DICOM files from the thoracic region. In the first stage, image processing techniques have been used to enhance the quality of the images and then the tracking of the aortic cross-sections’ boundaries ends up to the corresponding point cloud. Based on this cloud, a reverse engineering method generates Non-Uniform Rational B-SPLine (NURBS) surfaces. This is accomplished by fitting cubic B-SPLines to the cross-sections, which generate the 2D NURBS model, means the outer surface of the aorta. Our methodology was tested and evaluated on real MRI data from three different patients and the results indicate good potential for semi or even automated development of a personalized aortic model.
Constraints on Neutrino Mass from Sunyaev--Zeldovich Cluster Surveys
Creators: name: Mak, Daisy S. Y.
name: Pierpaoli, Elena
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The presence of massive neutrinos has a characteristic impact on the growth of large scale structures such as galaxy clusters. We forecast on the capability of the number count and power spectrum measured from the ongoing and future Sunyaev-Zeldovich (SZ) cluster surveys, combined with cosmic microwave background (CMB) observation to constrain the total neutrino mass $\mnu$ in a flat $Λ$CDM cosmology. We adopt self-calibration for the mass-observable scaling relation, and evaluate constraints for the South Pole Telescope normal and with polarization (SPT, SPTPol), Planck, and Atacama Cosmology Telescope Polarization (ACTPol) surveys. We find that a sample of $\approx1000$ clusters obtained from the Planck cluster survey plus extra information from CMB lensing extraction could tighten the current upper bound on the sum of neutrino masses to $σ_{\mnu}=0.17$ eV at 68% C.L. Our analysis shows that cluster number counts and power spectrum provide complementary constraints and as a result they help reducing the error bars on $\mnu$ by a factor of 4-8 when both probes are combined. We also show that the main strength of cluster measurements in constraining $\mnu$ is when good control of cluster systematics is available. When applying a weak prior on the mass-observable relations, which can be at reach in the upcoming cluster surveys, we obtain $σ_{\mnu}=0.48$ eV using cluster only probes and, more interestingly, $σ_{\mnu}=0.08$ eV using cluster + CMB which corresponds to a $S/N\approx4$ detection for $\mnu\ge0.3$ eV. We analyze and discuss the degeneracies of $\mnu$ with other parameters and investigate the sensitivity of neutrino mass constraints with various surveys specifications.
description: 7 pages, 2 figures
Plädoyer für die Lektüre von römischen Fachschriftstellern. Illustriert am Beispiel des Themas: Kunst und Ethos des Arztes. Texte zur antiken Medizin unter besonderer Berücksichtigung von Celsus: De Medicina
Creators: name: Schmitz, Dietmar
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 3 (2002): Forum Classicum
BRIEF REPORTS IN PHARMACOLOGY.2021 Aug 11. doi Just another online journal - but for free.pdf
Creators: name: Andersen, Jon
name: Horwitz, Henrik
Publisher: name: figshare
Year: 2021
Subjects: subject: 111502 Clinical Pharmacology and Therapeutics
subject: FOS: Clinical medicine

description: EditoralWelcome to Brief Reports in Pharmacology
Convergence of SCF sequences for the Hartree-Fock equation
Creators: name: Ashida, Sohei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81-08, 65K10

description: The Hartree-Fock equation is a fundamental equation in many-electron problems. It is of practical importance in quantum chemistry to find solutions to the Hartree-Fock equation. The self-consistent field (SCF) method is a standard numerical calculation method to solve the Hartree-Fock equation. In this paper we prove that the sequence of the functions obtained in the SCF procedure is composed of a sequence of pairs of functions that converges after multiplication by appropriate unitary matrices, which strongly ensures the validity of the SCF method. A sufficient condition for the limit to be a solution to the Hartree-Fock equation after multiplication by a unitary matrix is given, and the convergence of the corresponding density operators is also proved. The method is based mainly on the proof of approach of the sequence to a critical set of a functional, compactness of the critical set, and the proof of the Łojasiewicz inequality for another functional near critical points.
Large Tensor-to-Scalar Ratio in Small-Field Inflation
Creators: name: Kobayashi, Takeshi
name: Takahashi, Tomo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that density perturbations seeded by the inflaton can be suppressed when having additional light degrees of freedom contributing to the production of perturbations. The inflaton fluctuations affect the light field dynamics by modulating the length of the inflationary period, hence produce additional density perturbations in the post-inflationary era. Such perturbations can cancel those generated during inflation as both originate from the same inflaton fluctuations. This allows production of large gravitational waves from small-field inflation, which is normally forbidden by the Lyth bound on the inflaton field excursion. We also find that the field bound is taken over by the light scalar when the inflaton-induced perturbations are suppressed, thus present a generalized form of the Lyth bound that applies to the total field space.
description: 5 pages, 2 figures, v2: explanations added to the PRL version
Modelling entomological-climatic interactions of Plasmodium falciparum malaria transmission in two Colombian endemic-regions: contributions to a National Malaria Early Warning System
Creators: name: Ruiz Carrascal, Carlos Daniel
name: Poveda, Germán
name: Vélez, Iván D.
name: Quiñones, Martha L.
name: Rúa, Guillermo L.
name: Velásquez, Luz E.
name: Zuluaga, Juan S.
Publisher: name: Columbia University
Year: 2006
Subjects: Malaria
Malaria--Environmental aspects
Malaria--Transmission
Plasmodium falciparum
Climatic changes

description: Background: Malaria has recently re-emerged as a public health burden in Colombia. Although the problem seems to be climate-driven, there remain significant gaps of knowledge in the understanding of the complexity of malaria transmission, which have motivated attempts to develop a comprehensive model. Methods: The mathematical tool was applied to represent Plasmodium falciparum malaria transmission in two endemic-areas. Entomological exogenous variables were estimated through field campaigns and laboratory experiments. Availability of breeding places was included towards representing fluctuations in vector densities. Diverse scenarios, sensitivity analyses and instabilities cases were considered during experimentation-validation process. Results: Correlation coefficients and mean square errors between observed and modelled incidences reached 0.897-0.668 (P > 0.95) and 0.0002-0.0005, respectively. Temperature became the most relevant climatic parameter driving the final incidence. Accordingly, malaria outbreaks are possible during the favourable epochs following the onset of El Niño warm events. Sporogonic and gonotrophic cycles showed to be the entomological key-variables controlling the transmission potential of mosquitoes' population. Simulation results also showed that seasonality of vector density becomes an important factor towards understanding disease transmission. Conclusion: The model constitutes a promising tool to deepen the understanding of the multiple interactions related to malaria transmission conducive to outbreaks. In the foreseeable future it could be implemented as a tool to diagnose possible dynamical patterns of malaria incidence under several scenarios, as well as a decision-making tool for the early detection and control of outbreaks. The model will be also able to be merged with forecasts of El Niño events to provide a National Malaria Early Warning System.
SYK does not Transit Gloria Mundi just yet
Creators: name: Khveshchenko, D. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This note discusses examples of 0+1-dimensional Liouvillean dynamics instigated by the various deformations of the Sachdev-Ye-Kitaev (SYK) model. In reference to such deformations the main focus is on the regions of parameter space where the competing SYK couplings are of comparable strength and can not be treated as each others perturbations in the vicinity of the conformal fixed points corresponding to the pure SYK_q models with different values of $q$. Crossovers between such fixed points ('SYK transits') can be efficiently studied in the equivalent framework of single-particle quantum mechanics.
description: published version
title: Μελέτη και υλοποίηση σε SDR διαμόρφωσης OFDM
title: Study and SDR implementation of OFDM modulation
Creators: name: Ζεκαϊ Ορεστη
Publisher: name: Technical University of Crete
Year: 2017

description: Digital bandpass modulation techniques can be broadly classified into two categories. The first is single-carrier modulation, where data is transmitted by using a single radio frequency (RF) carrier. The other is multicarrier modulation, where data is transmitted by simultaneously modulating multiple RF carriers. This thesis is concerned with a particular type of multi-carrier modulation known as orthogonal frequency division multiplexing (OFDM). OFDM has gained popularity in a number of applications including digital subscriber loops, wireless local area networks,etc. It is also the chosen technique for fourth generation (4G) cellular land mobile radio systems.OFDM transmits data in parallel by modulating a set of orthogonal subcarriers. It is attractive because it admits relatively easy solutions to some difficult challenges that are encountered when using single-carrier modulation schemes on wireless channels. The greatest benefit of using OFDM is that the modulation of closely-spaced orthogonal sub-carriers partitions the available bandwidth into a collection of narrow sub-bands. On the other hand, although OFDM waveforms are resilient to timing errors, they are highly sensitive to frequency offsets and phase noise at the transmitter and receiver RF and sampling clock oscillators.
In this thesis, we will deal with synchronization issues in OFDM systems. Also,
we will study frequency offset estimation and cancellation and channel estimation.
Finally, we will implement an OFDM system using USRP N200 kits.
Likelihood-free methods for quantum parameter estimation
Creators: name: Ferrie, Christopher
name: Granade, Christopher E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this Letter, we strengthen and extend the connection between simulation and estimation to exploit simulation routines that do not exactly compute the probability of experimental data, known as the likelihood function. Rather, we provide an explicit algorithm for estimating parameters of physical models given access to a simulator which is only capable of producing sample outcomes. Since our algorithm does not require that a simulator be able to efficiently compute exact probabilities, it is able to exponentially outperform standard algorithms based on exact computation. In this way, our algorithm opens the door for the application of new insights and resources to the problem of characterizing large quantum systems, which is exponentially intractable using standard simulation resources.
description: Significantly revised presentation
The movable cone of Calabi--Yau threefolds in ruled Fano manifolds
Creators: name: Ito, Atsushi
name: Lai, Ching-Jui
name: Wang, Sz-Sheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J32, 14E05, 14M10, 14M15

description: We describe explicitly the chamber structure of the movable cone for a general complete intersection Calabi--Yau threefold in a non-split $(n + 4)$-dimensional $\mathbb{P}^{n}$-ruled Fano manifold of index $n + 1$ and Picard number two. Moreover, all birational minimal models of such Calabi--Yau threefolds are found whose number is finite.
description: 27 pages. The final version is accepted for publication in J. Geom. Phys
title: Μελέτη τηλεπικοινωνιακών συστημάτων με ισοστάθμιση στο πεδίο των συχνοτήτων
Creators: name: Λουκοπουλος Αλεξανδρος
Publisher: name: Technical University of Crete
Year: 2017

description: Η ισοστάθμιση στο πεδίο της συχνότητας (Frequency Domain Equalization - FDE) είναι μια τεχνική ισοστάθμισης η οποία οδηγεί συνήθως σε χαμηλότερη υπολογιστική πολυπλοκότητα σε σύγκριση με το αντίστοιχο πεδίο του χρόνου. Με την πάροδο των ετών, το FDE έχει προσελκύσει την προσοχή στην κοινότητα επεξεργασίας σημάτων ως ιδιαίτερη εφαρμογή με σημαντικές δυνατότητες. Οι εντυπωσιακές ομοιότητες του FDE συστήματος μονού φορέα (Single Carrier FDE - SC-FDE) με ένα ορθογώνιας πολυπλεξίας διαίρεσης συχνότητας (Orthogonal Frequency Division Multiplexing - OFDM) σύστημα, αλλά και η χαμηλή πολυπλοκότητά του, το καθιστούν εξαιρετική λύση στο πρόβλημα της ψηφιακής επίγειας εκπομπής που χαρακτηρίζεται από κανάλι με πολλές ανακλάσεις (highly dispersive channel) και ισχυρό ανταγωνιστή του OFDM στις ασύρματες ευρυζωνικές συνδέσεις υψηλής ταχύτητας.

Ο σκοπός αυτής της εργασίας είναι να προτείνει μια υλοποίηση ενός SC-FDE συστήματος, χρησιμοποιώντας τις συσκευές USRP N200 (Universal Peripheral Radio Software - USRP) και τα λογισμικά της MATLAB (Matrix Laboratory) και του GNU radio. Αρχικά, πρωτότυπα κώδικα δημιουργούνται στο MATLAB και μετά από διεξοδικές δοκιμές χρησιμοποιούνται τα USRP για τα τελικά αποτελέσματα, σε πραγματικές συνθήκες. Ο κώδικας μπορεί να χειρίζεται την επεξεργασία των εισερχόμενων ή εξερχόμενων πακέτων σε πραγματικό χρόνο, μέσα από μια σειρά από τεχνικές και διεργασίες. Στη συνέχεια, η λειτουργία του συστήματος πομπού-δέκτη θα εξεταστεί σε οριακές και τυχαίες συνθήκες.
Simulation of risk of tuberculosis infection in healthcare workers in hospitals of an intermediate incidence country
Creators: name: Ochoa, J.
name: Hincapié-Palacio, D.
name: Sepúlveda, H.
name: Ruiz Carrascal, Carlos Daniel
name: Molina, A.
name: Echeverri, S.
name: León, A. L.
name: Escombe, A. R.
name: Arbeláez, M. P.
Publisher: name: Columbia University
Year: 2015
Subjects: Tuberculosis
Tuberculosis--Hospitals
Medical personnel
Risk assessment

description: We simulated the frequency of tuberculosis infection in healthcare workers in order to classify the risk of TB transmission for nine hospitals in Medellín, Colombia. We used a risk assessment approach to estimate the average number of infections in three risk groups of a cohort of 1082 workers exposed to potentially infectious patients over 10- and 20-day periods. The risk level of the hospitals was classified according to TB prevalence: two of the hospitals were ranked as being of very high priority, six as high priority and one as low priority. Consistent results were obtained when the simulation was validated in two hospitals by studying 408 healthcare workers using interferon gamma release assays and tuberculin skin testing. The latent infection prevalence using laboratory tests was 41% [95% confidence interval (CI) 34·3–47·7] and 44% (95% CI 36·4–51·0) in those hospitals, and in the simulation, it was 40·7% (95% CI 32·3–49·0) and 36% (95% CI 27·9–44·0), respectively. Simulation of risk may be useful as a tool to classify local and regional hospitals according to their risk of nosocomial TB transmission, and to facilitate the design of hospital infection control plans.
Semiring and involution identities of power groups
Creators: name: Gusev, Sergey V.
name: Volkov, Mikhail V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16Y60, 20M18, 08B05

description: For every group $G$, the set $\mathcal{P}(G)$ of its subsets forms a semiring under set-theoretical union $\cup$ and element-wise multiplication $\cdot$ and forms an involution semigroup under $\cdot$ and element-wise inversion ${}^{-1}$. We show that if the group $G$ is finite, non-Dedekind, and solvable, neither the semiring $(\mathcal{P}(G),\cup,\cdot)$ nor the involution semigroup $(\mathcal{P}(G),\cdot,{}^{-1})$ admits a finite identity basis. We also solve the finite basis problem for the semiring of Hall relations over any finite set.
description: 18 pages, 1 figure
A search for cosmic topology in the final WMAP data
Creators: name: Aurich, Ralf
name: Lustig, Sven
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A search for matched circle pairs of similar temperature fluctuations in the final WMAP 9yr data is carried out. Such a signature is expected if the space of the Universe is multiply connected. We investigate the relation between the pixel resolution of cosmic microwave background (CMB) maps and a Gaussian smoothing in order to lower the probability for missing matched circle pairs. CMB maps having the 3-torus topology are generated with the characteristics of the WMAP satellite in order to determine how large the smoothing should be chosen in CMB maps disturbed by detector noise. The V- and W-band data are analysed with respect to matched circle pairs and a tentatively signal is found for a circle pair, which lies, however, close to the plane of the Galaxy. It is, however, inconclusive whether this signal is generated by chance, is due to residual foregrounds contained in the V- and W-band maps, or is due to a genuine topology.
The critical 2d Stochastic Heat Flow is not a Gaussian Multiplicative Chaos
Creators: name: Caravenna, Francesco
name: Sun, Rongfeng
name: Zygouras, Nikos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary: 82B44, Secondary: 35R60, 60H15, 82D60

description: The critical $2d$ Stochastic Heat Flow (SHF) is a stochastic process of random measures on ${\mathbb R}^2$, recently constructed in [CSZ23]. We show that this process falls outside the class of Gaussian Multiplicative Chaos (GMC), in the sense that it cannot be realised as the exponential of a (generalised) Gaussian field. We achieve this by deriving strict lower bounds on the moments of the SHF that are of independent interest.
description: Final version. 38 pages, 5 figures
Large deviations for occupation time profiles of random interlacements
Creators: name: Li, Xinyi
name: Sznitman, Alain-Sol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F10, 60G 60, 60J45, 60K35

description: We derive a large deviation principle for the density profile of occupation times of random interlacements at a fixed level in a large box of Z^d, with d bigger or equal to 3. As an application, we analyze the asymptotic behavior of the probability that atypically high values of the density profile insulate a macroscopic body in a large box. As a step in this program, we obtain a similar large deviation principle for the occupation-time measure of Brownian interlacements at a fixed level in a large box of R^d, and we derive a new identity for the Laplace transform of the occupation-time measure, which is based on the analysis of certain Schrödinger semi-groups.
description: 38 pages, typos corrected, more explanations, appears in Probability Theory and Related Fields
Monitoring ecological change during rapid socio-economic and political transitions: Colombian ecosystems in the post-conflict era
Creators: name: Sierra, Carlos A.
name: Mahecha, Miguel
name: Poveda, Germán
name: Álvarez-Dávila, Esteban
name: Gutierrez-Velez, Victor H.
name: Reu, Björn
name: Feilhauer, Hannes
name: Anáya, Jesús
name: Armenteras, Dolors
name: Benavides, Ana M.
name: Buendia, Corina
name: Duque, Álvaro
name: Estupiñan-Suarez, Lina M.
name: González, Catalina
name: Gonzalez-Caro, Sebastián
name: Jimenez, Rodrigo
name: Kraemer, Guido
name: Londoño, Maria C.
name: Orrego, Sergio A.
name: Posada, Juan M.
name: Ruiz Carrascal, Carlos Daniel
name: Skowronek, Sandra
Publisher: name: Columbia University
Year: 2017
Subjects: Ecosystem management
Emergency management--Government policy
Politics and government
Human ecology

description: After more than 50-years of armed conflict, Colombia is now transitioning to a more stable social and political climate due to a series of peace agreements between the government and different armed groups. Consequences of these socio-economic and political changes on ecosystems are largely uncertain, but there is growing concern about derived increases in environmental degradation. Here, we review the capacity of Colombia to monitor the state of its ecosystems and their rate of change over time. We found several important programs currently set in place by different institutions as well as by independent groups of scientists that address different aspects of environmental monitoring. However, most of the current initiatives could be improved in terms of data coverage, quality and access, and could be better articulated among each other. We propose a set of activities that would increase the capacity of Colombia to monitor its ecosystems, provide useful information to policy makers, and facilitate scientific research. These include: 1) the establishment of a national center for ecological synthesis that focuses on analyzing existing information; 2) the establishment of an ecological observatory system that collects new information, integrates remote sensing products, and produces near real-time products on key ecological variables; and 3) the creation of new platforms for dialog and action within existing scientific and policy groups.
Encoding High-level Quantum Programs as SZX-diagrams
Creators: name: Borgna, Augustin
name: Romero, Rafael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The Scalable ZX-calculus is a compact graphical language used to reason about linear maps between quantum states. These diagrams have multiple applications, but they frequently have to be constructed in a case-by-case basis. In this work we present a method to encode quantum programs implemented in a fragment of the linear dependently typed Proto-Quipper-D language as families of SZX-diagrams. We define a subset of translatable Proto-Quipper-D programs and show that our procedure is able to encode non-trivial algorithms as diagrams that grow linearly on the size of the program.
description: In Proceedings QPL 2022, arXiv:2311.08375
Copula bounds for circular data
Creators: name: Ogata, Hiroaki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We propose the extension of Fréchet-Hoeffding copula bounds for circular data. The copula is a powerful tool for describing the dependency of random variables. In two dimensions, the Fréchet-Hoeffding upper (lower) bound indicates the perfect positive (negative) dependence between two random variables. However, for circular random variables, the usual concept of dependency is not accepted because of their periodicity. In this work, we redefine Fréchet-Hoeffding bounds and consider modified Fréchet and Mardia families of copulas for modelling the dependency of two circular random variables. Simulation studies are also given to demonstrate the behavior of the model.
CSSW Annual Online Faculty Development Series: 2020 UPCEA Mid-Atlantic Region Faculty & Staff Development Award -- #UPCEAMidA
Creators: name: Marquart, Matthea S.
name: Folk, Krystal
Publisher: name: Columbia University
Year: 2020
Subjects: Distance education
Social work education
Web-based instruction
Universities and colleges--Faculty--Training of

description: During AY2018-19, the Columbia University School of Social Work (CSSW) Online Campus launched a five-session virtual Online Faculty Development Series serving our online faculty and staff nationwide. Each year, the series comprises five highly interactive 2-hour synchronous sessions, scheduled in the evenings for greater accessibility for adjunct faculty, which are recorded so that those who cannot attend live can participate asynchronously. Online Campus community members who complete all five sessions/year earn a digital badge. The sessions include CSSW and Online Campus news and updates, and provide ongoing professional development to the Online Campus community on pedagogy, online teaching best practices and examples, and recent technology developments. Guest speakers include CSSW faculty and administrators, with the majority of presentations coming from Online Campus members. This series is an innovation that contributes to the field of distance education by providing an example that can be replicated in part or in whole by other institutions interested in innovating their faculty development for online educators. It was awarded a 2020 University Professional and Continuing Education Association (UPCEA) Mid-Atlantic Region Faculty and Staff Development Award. This poster presentation was for an asynchronous virtual poster session at the UPCEA Mid-Atlantic Regional Conference. During the conference, the presentation included embedded audio on each slide; that audio may be available to UPCEA members in the UPCEA archives.
Search for third generation scalar leptoquarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for pair-produced third generation scalar leptoquarks is presented, using proton-proton collisions at sqrt(s)= 7 TeV at the LHC. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.7 fb-1. Each leptoquark is assumed to decay to a tau lepton and a b-quark with a branching fraction equal to 100%. No statistically significant excess above the Standard Model expectation is observed. Third generation leptoquarks are therefore excluded at 95% confidence level for masses less than 534 GeV.
description: 24 pages plus author list (43 pages total), 5 figures, 6 tables, submitted to JHEP, revision matches published version. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-14/
Quantitative Structure-Activity Relationship (QSAR) analysis of functionalized triblock copolymers with applications as dehydrating agents of crude oil
Creators: name: Zamora, Edgar Benedicto
name: Zavala, Gerardo
name: López, Alfonso
name: Cevada, Enrique
name: Montesinos, Rosa
name: Vázquez, Flavio
name: Flores, César
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology

description: QSAR analysis was applied to obtain the water removal efficiency (WRE) values of triblock copolymers functionalized with tertiary amines, employed as demulsifier agents of crude oil. Taking into account the evaluation of F- and G-series reported by Zamora et al., the H-series was synthesized based on a triblock copolymer of 1920 g mol−1, and evaluated in CM1 and CM2 crude oils (7.5 and 18.7 °API). In addition, quantum and QSAR parameters, physicochemical properties of crude oil were included in the QSAR analysis. 66 WRE values were considered in the training set. Q2 value was established to weigh up an equation as acceptable, achieving eight equations, T1 – T8, for the training set. About external validation, F-, G- and H-series were assessed in CM3 heavy crude oil (16.9 °API), considering an overall of 33 WRE values for the validation. For the external validation, the coefficient of the prediction set (R2EXT), the predictive squared correlation coefficient (Q2Fn), the metric value (r2m), the concordance correlation coefficient (CCC), and the regression line slopes (k and k’) criteria were obtained. Only two equations, T1 and T8, complied with threshold established in the validation criteria. About r2m criterion, T8 equation gave a better correlation, 0.62, than that of T1 equation, 0.58. However, both equations could be optimal to calculate the water removal efficiency. Regarding physicochemical parameters of crude oil, number average molecular mass and run-off temperature were the unique parameters showing a clear effect over the calculated water removal efficiency. Equation T8Log WRE = 0.05313 – 38.58707S + 0.27904ω – 2.77429ACN + 0.06309MR –0.14811α – 0.012 TRO R2=0.6369, SD = 0.4112, F = 17.2457, Q2=0.6369
On the design and analysis of near-term quantum network protocols using Markov decision processes
Creators: name: Khatri, Sumeet
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The quantum internet is one of the frontiers of quantum information science research. It will revolutionize the way we communicate and do other tasks, and it will allow for tasks that are not possible using the current, classical internet. The backbone of a quantum internet is entanglement distributed globally in order to allow for such novel applications to be performed over long distances. Experimental progress is currently being made to realize quantum networks on a small scale, but much theoretical work is still needed in order to understand how best to distribute entanglement, especially with the limitations of near-term quantum technologies taken into account. This work provides an initial step towards this goal. In this work, we lay out a theory of near-term quantum networks based on Markov decision processes (MDPs), and we show that MDPs provide a precise and systematic mathematical framework to model protocols for near-term quantum networks that is agnostic to the specific implementation platform. We start by simplifying the MDP for elementary links introduced in prior work, and by providing new results on policies for elementary links. In particular, we show that the well-known memory-cutoff policy is optimal. Then we show how the elementary link MDP can be used to analyze a quantum network protocol in which we wait for all elementary links to be active before creating end-to-end links. We then provide an extension of the MDP formalism to two elementary links, which is useful for analyzing more sophisticated quantum network protocols. Here, as new results, we derive linear programs that give us optimal steady-state policies with respect to the expected fidelity and waiting time of the end-to-end link.
description: v2: 19+37 pages, 17 figures; updated references; minor changes to the structure and presentation; similar to the published version
title: Μοντελοποίηση δυναμικών οπτικών σημάτων και ανάλυση ευαισθησίας των παραμέτρων του μοντέλου στη διάγνωση νεοπλασίας του τραχήλου της μήτρας
Creators: name: Αναστασοπούλου Αντιγόνη
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Observation of trap-assisted formation of atom-ion bound states
Creators: name: Pinkas, Meirav
name: Katz, Or
name: Wengrowicz, Jonathan
name: Akerman, Nitzan
name: Ozeri, Roee
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pairs of free particles cannot form bound states in elastic collision due to momentum and energy conservation. In many ultracold experiments, however, the particles collide in the presence of an external trapping potential which can couple the center-of-mass and relative motions and assist the formation of bound-states. Here, we report on observation of weakly bound molecular states formed between one ultracold $^{87}$Rb atom and a single trapped $^{88}$Sr$^+$ ion in the presence of a linear Paul trap. We show that bound states can form efficiently in binary collisions, and enhance the rate of inelastic processes. By observing electronic spin-exchange rate, we study the dependence of these bound states on the collision energy and magnetic field and extract the average molecular binding energy $E_{\textrm{bind}}=0.7(1)$ mK$\cdot k_B$ and the mean lifetime of the molecule $τ=0.5(1)\,μ$s, with good agreement with molecular-dynamics simulations. Our simulations predict a highly unusual power-law distribution of molecular lifetimes with a mean that is dominated by extreme, long-lived, events. The dependence of the molecular properties on the trapping parameters opens new avenues to study and control ultracold collisions.
description: 17 pages, 12 figures
String Condensations in 3+1D and Lagrangian Algebras
Creators: name: Zhao, Jiaheng
name: Lou, Jia-Qi
name: Zhang, Zhi-Hao
name: Hung, Ling-Yan
name: Kong, Liang
name: Tian, Yin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Category Theory (math.CT)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present three Lagrangian algebras in the modular 2-category associated to the 3+1D $\mathbb{Z}_2$ topological order and discuss their physical interpretations, connecting algebras with gapped boundary conditions, and interestingly, maps (braided autoequivalences) exchanging algebras with bulk domain walls. A Lagrangian algebra, together with its modules and local modules, encapsulates detailed physical data of strings condensing at a gapped boundary. In particular, the condensed strings can terminate at boundaries in non-trivial ways. This phenomenon has no lower dimensional analogue and corresponds to novel mathematical structures associated to higher algebras. We provide a layered construction and also explicit lattice realizations of these boundaries and illustrate the correspondence between physics and mathematics of these boundary conditions. This is a first detailed study of the mathematics of Lagrangian algebras in modular 2-categories and their corresponding physics, that brings together rich phenomena of string condensations, gapped boundaries and domain walls in 3+1D topological orders.
description: 7+17 pages, 16 figures. Comments are welcome
A Risk-Sensitive Approach to Policy Optimization
Creators: name: Markowitz, Jared
name: Gardner, Ryan W.
name: Llorens, Ashley
name: Arora, Raman
name: Wang, I-Jeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Standard deep reinforcement learning (DRL) aims to maximize expected reward, considering collected experiences equally in formulating a policy. This differs from human decision-making, where gains and losses are valued differently and outlying outcomes are given increased consideration. It also fails to capitalize on opportunities to improve safety and/or performance through the incorporation of distributional context. Several approaches to distributional DRL have been investigated, with one popular strategy being to evaluate the projected distribution of returns for possible actions. We propose a more direct approach whereby risk-sensitive objectives, specified in terms of the cumulative distribution function (CDF) of the distribution of full-episode rewards, are optimized. This approach allows for outcomes to be weighed based on relative quality, can be used for both continuous and discrete action spaces, and may naturally be applied in both constrained and unconstrained settings. We show how to compute an asymptotically consistent estimate of the policy gradient for a broad class of risk-sensitive objectives via sampling, subsequently incorporating variance reduction and regularization measures to facilitate effective on-policy learning. We then demonstrate that the use of moderately "pessimistic" risk profiles, which emphasize scenarios where the agent performs poorly, leads to enhanced exploration and a continual focus on addressing deficiencies. We test the approach using different risk profiles in six OpenAI Safety Gym environments, comparing to state of the art on-policy methods. Without cost constraints, we find that pessimistic risk profiles can be used to reduce cost while improving total reward accumulation. With cost constraints, they are seen to provide higher positive rewards than risk-neutral approaches at the prescribed allowable cost.
description: 16 pages, 13 figures. AAAI 2023 (Special Track on Safe and Robust AI)
Purchase Intention of Franchised Coffee in Thailand
Creators: name: Theera Erawan
Publisher: name: คณะพาณิชยศาสตร์และการบัญชี มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: Theory of Planned Behavior
Mixed Methods Research Methodology
Intention
Franchised Coffee
Thailand

description: วารสารบริหารธุรกิจ JBA, 44, 170 (เม.ย.-มิ.ย. 64), 32
Heavy flavor suppression: role of hadronic matter
Creators: name: Das, Santosh K.
name: Ghosh, Sabyasachi
name: Sarkar, Sourav
name: Alam, Jan-e
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The role of hadronic matter in the suppression of open heavy flavored mesons has been studied. The heavy-quarks (HQs) suppression factors have been calculated and contrasted with the experimental data obtained from nuclear collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadronic Collider (LHC) experiments. It is found that the suppression in the hadronic phase at RHIC energy is around $20%-25%$ whereas at the LHC it is around $10%-12%$ for the D meson. In case of B meson the hadronic suppression is around $10%-12%$ and $5%-6%$ at RHIC and LHC energies respectively. Present study suggests that the suppression of heavy flavor in the hadronic phase is significant at RHIC. However, the effect of hadronic suppression at LHC is marginal, this makes the characterization of QGP at LHC less complicated.
description: Physical Review D (in press)
Somonodromic Deformations Along the Caustic of a Dubrovin-Frobenius Manifold
Creators: name: Reyes, Felipe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the family of ordinary differential equations associated to a Dubrovin-Frobenius manifold along its caustic. Upon just loosing an idempotent at the caustic and under a non-degeneracy condition, we write down a normal form for this family and prove that the corresponding fundamental matrix solutions are strongly isomonodromic. It is shown that the exponent of formal monodromy is related to the multiplication structure of the Dubrovin-Frobenius manifold along its caustic.
Selecting Research Data Repository Platforms for Open Science
Creators: name: Downs, Robert R.
name: Lehnert, Kerstin A.
name: Zhang, Lili
name: Donaldson, Devan
name: Da Silva, João Rocha
Publisher: name: Columbia University
Year: 2020
Subjects: Information science
Research--Data processing
Database management
Information storage and retrieval systems
Digital preservation

description: Various choices of opportunities are available when selecting and implementing a data repository for open science. Considerations include adopting or developing a custom solution, contracting hosted services, procuring and installing systems, or managing a centralized or distributed system. Other options include collaboration, federation, and sharing of resources. Likewise, the need for administration, integration, and support also present choices. Sharing information, knowledge, technology, services and other resources among data repositories also offers advantages. Approaches are described for developing, adopting, and implementing data repository platforms along with approaches for data repositories to share resources.
Quantum nonlocality in presence of strong measurement dependence
Creators: name: Šupić, Ivan
name: Bancal, Jean-Daniel
name: Brunner, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is well known that the effect of quantum nonlocality, as witnessed by violation of a Bell inequality, can be observed even when relaxing the assumption of measurement independence, i.e. allowing for the source to be partially correlated with the choices of measurement settings. But what is the minimal amount of measurement independence needed for observing quantum nonlocality? Here we explore this question and consider models with strong measurement-dependent locality, where measurement choices can be perfectly determined in almost all rounds of the Bell test. Yet, we show that quantum nonlocality can still be observed in this scenario, which we conjecture is minimal within the framework we use. We also discuss potential applications in randomness amplification.
Mediations of Outrage: How Violence Against Protesters is Remembered
Creators: name: Rigney, Ann
Publisher: name: figshare
Year: 2021
Subjects: subject: 130201 Creative Arts, Media and Communication Curriculum and Pedagogy
subject: FOS: Educational sciences
subject: 210399 Historical Studies not elsewhere classified
subject: FOS: History and archaeology
subject: 210307 European History (excl. British, Classical Greek and Roman)
subject: History
subject: 220104 Human Rights and Justice Issues
subject: FOS: Philosophy, ethics and religion
subject: Literature
subject: 200104 Media Studies
subject: FOS: Media and communications

description: Final pre-publlication version of a paper that appeared in a special issue of Social Research (volume 87.3 (2020)) on cultural trauma: The paper examines how the memory of violence against demonstrators is culturally produced. In line with cultural theories of trauma, it assumes that the collective meaning of violence is socially mediated. However, it critiques the primacy of trauma as an analytic frame because its gravitation towards victimhood and negativity occludes the dynamic of action and reaction that defines contentious politics. Drawing on cultural memory studies to identify complex processes of mediation and remediation that render some events more memorable then others, the paper shows how the memory of outrages committed against demonstrators is made meaningful and imbued with a mobilizing capacity.
Relative Locality in Curved Space-time
Creators: name: Kowalski-Glikman, Jerzy
name: Rosati, Giacomo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we construct the action describing dynamics of the particle moving in curved spacetime, with a non-trivial momentum space geometry. Curved momentum space is the core feature of theories where relative locality effects are presents. So far aspects of nonlinearities in momentum space have been studied only for flat or constantly expanding (De Sitter) spacetimes, relying on the their maximally symmetric nature. The extension of curved momentum space frameworks to arbitrary spacetime geometries could be relevant for the opportunities to test Planck-scale curvature/deformation of particles momentum space. As a first example of this construction we describe the particle with kappa-Poincaré momentum space on a circular orbit in Schwarzschild spacetime, where the contributes of momentum space curvature turn out to be negligible. The analysis of this problem relies crucially on the solution of the soccer ball problem.
description: In V2 some some changes in text have been made after suggestions from peer-review; some citations added; to appear in MPLA
Opportunities for Sharing Resources Among Research Data Repositories
Creators: name: Downs, Robert R.
name: Lehnert, Kerstin A.
Publisher: name: Columbia University
Year: 2020
Subjects: Information science
Research--Data processing
Database management
Information storage and retrieval systems
Digital preservation

description: Sharing information, knowledge, technology, and services improves capabilities to facilitate open science through open data. Opportunities for resource sharing are enabled through various kinds of relationships. Resource sharing among data repositories addresses mutual needs, science demands, project goals, organizational objectives, as well as other conditions. Some data curation services that benefit from resource sharing include repository services, system services, data services, review services, and organizational services. Developing and distributing open source software products and repository platforms also fosters sharing among data repositories. These issues and opportunities for data sharing, along with examples, are discussed.