cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ST to FL translation for hardware design verification
Creators: name: Lee, Wing Sang
Publisher: name: University of British Columbia
Year: 2009

description: Due to the rapid advances of VLSI technology in the past two decades, complicated hardware designs are now practical and common. Such designs are difficult to verify. Traditionally, design validation had relied on simulation, but exhaustive simulation is impractical, and as designs get larger, simulation becomes more and more inadequate. In my research, I have developed rigorous, formal methods to verify hardware described in ST — a simple, intuitive hardware description language. This goal is achieved by translating hardware modeled in ST to an equivalent representation in FL — a general purpose functional language. With its built-in support for Ordered Binary Decision Diagrams (OBDDs), Boolean expressions can be easily and efficiently manipulated by FL programs. My research is mostly concentrated on safety property verification. Such properties assert that bad things don’t happen to the hardware designs. By using the weakest invari ant calculation algorithm designed, which is based primarily on Boolean manipulations, we are able to verify safety properties of ST programs efficiently. Moreover, a refinement rule is also defined. This refinement rule produces a safety property of an implementation description; it guarantees that all safety properties of its design specification also hold for the implementation. Consequently, we are able to verify a specification, and to verify that all subsequent refinements of the specification are suitable related.
Three dimensional topological invariants for time reversal invariant Hamiltonians and the three dimensional quantum spin Hall effect
Creators: name: Roy, Rahul
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The $Z_2$ invariant for filled bands in the ground states of systems with time reversal invariance characterizes the number of stable pairs of edge states. Here we study the $Z_2 $ invariant using band touching methods discussed in a recent previous work \cite{roy2006zcq} and extend the study to three dimensions. Band collisions preserve the $Z_2 $ invariant both in two and three dimensions, but there are crucial differences in the two cases. In three dimensions,we find a novel fourth $Z_2 $ invariant which is characterized by a "trapped monopole" in momentum space. If the monopole charge in half the Brillouin zone is odd, then atleast one of the monopoles cannot recombine with another monopole and vanish unlike the case when the monopole charge is even. We also point out the possibility of a three dimensional quantum spin Hall effect and discuss the connection of various topological invariants to such an effect.
Femtosecond Laser Induced Resonant Tunneling in an Individual Quantum Dot Attached to a Nanotip
Creators: name: Duchet, Maxime
name: Perisanu, Sorin
name: Purcell, Stephen
name: Constant, Eric
name: Loriot, Vincent
name: Yanagisawa, Hirofumi
name: Kling, Matthias
name: Lepine, Franck
name: Ayari, Anthony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantized nano-objects offer a myriad of exciting possibilities for manipulating electrons and light that impact photonics, nanoelectronics, and quantum information. In this context, ultrashort laser pulses combined with nanotips and field emission have permitted renewing nano-characterization and control electron dynamics with unprecedented space and time resolution reaching femtosecond and even attosecond regimes. A crucial missing step in these experiments is that no signature of quantized energy levels has yet been observed. We combine in situ nanostructuration of nanotips and ultrashort laser pulse excitation to induce multiphoton excitation and electron emission from a single quantized nano-object attached at the apex of a metal nanotip. Femtosecond induced tunneling through well-defined localized confinement states that are tunable in energy is demonstrated. This paves the way for the development of ultrafast manipulation of electron emission from isolated nano-objects including stereographically fixed individual molecules and high brightness, ultrafast, coherent single electron sources for quantum optics experiments.
Notes on gravity multiplet correlators in $AdS_3 \times S^3$
Creators: name: Wen, Congkao
name: Zhang, Shun-Qing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a compact formula in Mellin space for the four-point tree-level holographic correlators of chiral primary operators of arbitrary conformal weights in $(2,0)$ supergravity on $AdS_3 \times S^3$, with two operators in tensor multiplet and the other two in gravity multiplet. This is achieved by solving the recursion relation arising from a hidden six-dimensional conformal symmetry. We note the compact expression is obtained after carefully analysing the analytic structures of the correlators. Various limits of the correlators are studied, including the maximally R-symmetry violating limit and flat-space limit.
description: 23 pages, typos corrected, another MRV limit studied, version accepted by JHEP
Καταγώγια και πανδοκεία στην αρχαία Ελλάδα
Creators: name: Παπαμαρτζιβάνου, Αθανασία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Καταγώγια
Πανδοκεία
Ξενώνες στην αρχαία Ελλάδα
Katagogia
Pandokeia
Hostelries in ancient Greece

description: Αντικείμενο της εργασίας είναι η αρχιτεκτονική μορφή και η λειτουργία των αρχαίων ελληνικών κτιρίων που ανασκάφηκαν στον ελληνικό χώρο και ταυτίστηκαν στην αρχαιολογική έρευνα με καταγώγια, δηλ. με πανδοχεία. Αρχικά παρουσιάζουμε τις πληροφορίες που αντλούμε για τα αρχαία ελληνικά καταγώγια μέσα από τα αρχαία κείμενα. Στη συνέχεια εξετάζουμε τα μνημεία - με έμφαση στο ζήτημα της κάτοψής τους - και τις απόψεις για τη χρήση τους, όπως αυτές παρουσιάζονται στην έως τώρα δημοσιευμένη βιβλιογραφία. Κύριος στόχος μας είναι να διαπιστώσουμε κατά πόσο η ταύτιση των συγκεκριμένων μνημείων με καταγώγια μπορεί να ευσταθεί.
description: The subject of this study is the architectural form and the function of ancient Greek buildings that have been excavated in Greece and have been identified in the archaeological research as katagogia, i.e. hostelries. At first we present the information that we obtain from the ancient texts about the ancient Greek katagogia. Consequently we examine the monuments – with emphasis on the issue of their floor plan – and the opinions about their use, as they have been expressed in the literature published so far. Our primary aim is to ascertain whether the identification of the specific monuments as katagogia remains valid.
Can rare SAT formulas be easily recognized? On the efficiency of message passing algorithms for K-SAT at large clause-to-variable ratios
Creators: name: Altarelli, Fabrizio
name: Monasson, Remi
name: Zamponi, Francesco
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Complexity (cs.CC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: For large clause-to-variable ratio, typical K-SAT instances drawn from the uniform distribution have no solution. We argue, based on statistical mechanics calculations using the replica and cavity methods, that rare satisfiable instances from the uniform distribution are very similar to typical instances drawn from the so-called planted distribution, where instances are chosen uniformly between the ones that admit a given solution. It then follows, from a recent article by Feige, Mossel and Vilenchik, that these rare instances can be easily recognized (in O(log N) time and with probability close to 1) by a simple message-passing algorithm.
description: 8 pages of text and 7 of appendices; updated to take into account comments received on the first version; to be published on J.Phys.A:Math.Gen
Storia della sicurezza in Europa / Storia europea della sicurezza
Creators: name: Zwierlein, Cornel
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Storia della sicurezza
subject: Botero
subject: Lorenzo de’ Medici
subject: Claudio Tolomei
subject: Sicurezza ambientale
subject: Relazioni internazionali
subject: 900 Geschichte und Geografie::900 Geschichte::900 Geschichte und Geografie
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: L’ambito della storia della sicurezza è cresciuto rapidamente negli anni recenti – nonostante appaia ancora quello meno indagato all’interno dell’ampio contesto interdisciplinare degli studi sulla sicurezza. L’articolo cerca di disegnare un schizzo dello stato dell’arte, sottolineando tre aspetti: in primo luogo, una (tuttora assente) storia della sicurezza di età rinascimentale – la storia dell’iniziale concetto di sicurezza collettiva transterritoriale sviluppato nell’ambito del sistema degli Stati italiani del Quattrocento; in secondo luogo, lo sviluppo della sicurezza come principio guida dell’amministrazione interna allo Stato soprattutto nell’Europa continentale nei secoli XVII e XVIII; in terzo luogo, le sfide di una storia della sicurezza ambientale come storia delle relazioni transterritoriali e transnazionali tra economie politiche, natura e volontà di fornire sicurezza (a esseri umani, Stati, imperi).
Jobs and Earnings in Nonmetro Industry, 1987
Creators: name: Ghelfi, Linda M.
name: Majchrowicz, T. Alexander
name: Ghelfi, Linda M.
name: Majchrowicz, T. Alexander
Publisher: name: Unknown
Year: 1990
Subjects: Community/Rural/Urban Development
Financial Economics
Labor and Human Capital

description: Nonmetropolitan (nonmetro) job growth accelerated during 1987, but nonmetro real earnings grew slower than during earlier years of the U.S. economic recovery that began in 1982. Nonmetro jobs grew 2.5 percent during 1987, almost 1 percentage point faster than the average annual rate for 1982-86. Nonmetro real earnings grew 2 percent, nearly half a percentage point slower than in previous recovery years. In both jobs and earnings, nonmetro growth lagged metro, but by a smaller margin than earlier. The nonmetro Northeast had the best growth record. Nationwide, nonmetro goods-producing industries grew faster than their metro counterparts, but metro service-producing Industries outperformed nonmetro service producers.
On Diasporic Afro-Brazilian Landscapes: Between Humans, Plants, and Palm Oil Cultures
Creators: name: Klanovicz, Jo
Publisher: name: Zenodo
Year: 2023

description: Review: Case Watkins. Palm Oil Diaspora: Afro-Brazilian Landscapes and Economies on Bahia's Dendê Coast.Afro-Latin America Series. Cambridge: Cambridge University Press, 2021. xix + 347 pp. $80.00, e-book,ISBN 978-1-108-80829-3.
Quadrature and polarization squeezing in a dispersive optical bistability model
Creators: name: Garcia-Ferrer, F. V.
name: Perez-Arjona, I.
name: de Valcarcel, G. J.
name: Roldan, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically study quadrature and polarization squeezing in dispersive optical bistability through a vectorial Kerr cavity model describing a nonlinear cavity filled with an isotropic chi(3) medium in which self-phase and cross-phase modulation, as well as four--wave mixing, occur. We derive expressions for the quantum fluctuations of the output field quadratures as a function of which we express the spectrum of fluctuations of the output field Stokes parameters. We pay particular attention to study how the bifurcations affecting the non-null linearly polarized output mode squeezes the orthogonally polarized vacuum mode, and show how this produces polarization squeezing.
description: 10 text pages + 12 figures
Understanding more about maternal vaccination and neonatal immunity to improve vaccine induced protection in early life
Creators: name: Zhong, Ziyun
Publisher: name: Imperial College London
Year: 2017

description: Neonates are more susceptible to infectious diseases and often have worse disease outcomes. Influenza virus, Respiratory Syncytial Virus (RSV) and Streptococcus agalacticae (Group B Streptococcus: GBS) are three major pathogens associated with neonatal infections. Maternal and neonatal vaccination are two promising strategies to protect this vulnerable population. Maternal influenza vaccination has been clinically proven to be effective in protecting both the mothers and newborns. However, the limited half-life of antibody response reduces the effectiveness of protection in infants leaving them highly susceptible to infection. More understanding of the complete picture of how the timing of maternal vaccination affects the antibody responses in both the mothers and their newborns is required. One objective of this study was to evaluate influenza specific antibody after vaccination at different stages of pregnancy in the mothers and their newborns. Maternal immunisation led to significantly more antibody in the infant blood, the highest antibody concentration was found in newborns when maternal vaccination was carried out 5-24 weeks before delivery. Neonatal vaccination is an alternative option. However, neonates have different immune features compared to adults, including restricted functionality of the innate immune response and limited immune memory. Since these features play an essential role in shaping the subsequent direction of the vaccine induced response, studying the neonatal innate response to infections in comparison to adults may be instrumental to future neonatal vaccine development. Therefore, the other objective of this study was to investigate the neonatal innate immune response to influenza, RSV and GBS. Neonatal innate immune responses to viral and bacterial infection were characterised and compared, following by the study of innate immune cell phenotypes and the corresponding chemokine expression. Viral infection induced a different immune response pattern compared to bacterial infection. Interestingly, neonates display similar overall immune profiles when compared with adults, with the exception of the chemokine responses. These studies provide immunological underpinning for the future development of effective maternal and neonatal vaccines.
Entanglement reciprocation using three level atoms in a lambda configuration
Creators: name: Lourenco, F. C.
name: Vidiella-Barranco, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a scheme in which entanglement can be transferred from atoms (discrete variables) to entangled states of cavity fields (continuous variables). The cavities play the role of a kind of quantum memory for entanglement, in such a way that it is possible to retrieve it back to the atoms. In our method, two three level atoms in a lambda configuration, previously entangled, are set to interact with single mode cavity fields prepared in coherent states. During the process, one e-bit of entanglement may be deposited in the cavities in an efficient way. We also show that the stored entanglement may be transferred back to flying atoms.
Εξόρυξη και ανάλυση δεδομένων για τα ανώτατα στελέχη τεχνολόγων λογισμικού μέσω του LinkedIn
Creators: name: Παπαδοπούλου, Ευσταθία Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Εξόρυξη δεδομένων
Στατιστική ανάλυση δεδομένων
linkedin
Data mining
Data analysis

description: Η παρούσα διπλωματική εργασία αποτελεί μια μελέτη των επαγγελματικών προφίλ των ανώτατων στελεχών των τεχνολόγων λογισμικού της Ελλάδας μέσω του επαγγελματικού κοινωνικού δικτύου linkedin. Σκοπός της εργασίας είναι η εξαγωγή ποιοτικών και ποσοτικών συμπερασμάτων που αφορούν την προαναφερθείσα εργασιακή ομάδα, μέσω τεχνικών στατιστικής ανάλυσης των δεδομένων, προκειμένου να υπάρξει μια πιο ολοκληρωμένη εικόνα του κλάδου αυτού στον ελλαδικό χώρο. Πιο συγκεκριμένα, αρχικά, διεξήχθη μια περιγραφική ανάλυση των δεδομένων, με την βοήθεια υπολογισμού συχνοτήτων, προκειμένου να εξαχθούν μερικά γενικά συμπεράσματα που αφορούσαν τα χαρακτηριστικά του δείγματός μας, ενώ στη συνέχεια, έγινε χρήση γνωστών στατιστικών ελέγχων όπως το independent sample t-test, ο έλεγχος anova και ο έλεγχος x2 σε συνδυασμό με μια correspondence ανάλυση, με σκοπό την εξαγωγή συμπερασμάτων αλληλεξάρτησης των διαφόρων χαρακτηριστικών των ανώτατων στελεχών τεχνολόγων λογισμικού.
description: This thesis is a study of the professional profiles of the Senior Software Engineers in Greece through the professional social network linkedin. The purpose of this project is to export qualitative and quantitative conclusions concerning the aforementioned working group, through statistical data analysis techniques, in order to provide a more complete and accurate view of this field in greece. More specifically, a descriptive analysis was carried out, using frequency-calculations in order to draw some general conclusions concerning the characteristics of our sample. Subsequently, statistical tests, such as the independent samples t-test, the anova test and the x2 test combined with a correspondence analysis, were conducted to export conclusions about the correlations between the characteristics of the senior software engineers in greece.
Ударная стройка русского мира. Публицист Сергей Чапнин о выстраивании вертикали РПЦ
Creators: name: Chapnin, Sergej
Publisher: name: Zenodo
Year: 2016

description: https://www.vedomosti.ru/opinion/articles/2016/10/21/661848-stroika-russkogo-mira
Computational study for photostability of agrochemical molecules
Creators: name: Yuan, Qi
Publisher: name: Imperial College London
Year: 2018

description: Photostability is a key property of agrochemicals since insufficient photostability will lead to damaged efficacy in application. Industrial assessment of the photostability of agrochemicals often involves large scale experimental tests. Therefore, robust theoretical methods for modelling photostability are necessary to accelerate the discovery of agrochemicals. In this thesis, computational models for the assessment of the photostability of agrochemicals against both direct and indirect photodegradation were developed. The stabilities of Strobilurin molecules against direct photoisomerization and photodegradation were examined using their molecular structures and excited state properties. The excitation state energies of the Strobilurins were fed to a support vector machine (SVM) to ‘predict’ their stability. An unsupervised clustering model and a Naïve Bayesian classifier against photoisomerization were built to study the structural–stability relationships. The prediction accuracy of the SVM was the highest, while the unsupervised clustering model and Bayesian classifier were computationally less expensive. The indirect photodegradation of Cycloxydim in the presence of Chlorothalonil was studied. The reaction process involved intermolecular hydrogen transfer and the reactant dimer was formed via excitation energy transfer (EET) from triplet Chlorothalonil to ground state Cycloxydim. Electron transfer followed by proton transfer was suggested as the reaction mechanism. Oxidation rates of Phenylurea herbicides by dissolved organic matter (DOM) were modelled using electron affinity-based and bond strength-based descriptors. The oxidation reaction rates had a negative relationship with oxidation potential and vertical ionization potential of the herbicides. Solvent effects of water and acetonitrile on the photochemical fate of Cycloxydim were examined with different models: continuum solvent alone, and continuum solvation in combination with solvent molecules and QM/MM/MD. Explicit solvent representations were helpful for examining the solvent–solute interactions. In summary, computationally inexpensive descriptors can be used for screening candidate molecules with similar photochemical fate, while calculation of potential energy profiles and intermolecular interactions would be required for mechanism examination.
Planetary Nebula Abundances and Morphology: Probing the Chemical Evolution of the Milky Way
Creators: name: Stanghellini, L.
name: Guerrero, A. M.
name: Cunha, K.
name: Manchado, A.
name: Villaver, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents a homogeneous study of abundances in a sample of 79 northern galactic planetary nebulae whose morphological classes have been uniformly determined. Ionic abundances and plasma diagnostics were derived from selected optical line strengths in the literature, and elemental abundances were estimated with the Ionization Correction Factor developed by Kingsbourgh & Barlow (1994). We compare the elemental abundances to the final yields obtained from stellar evolution models of low-and intermediate-mass stars, and we confirm that most Bipolar planetary nebulae have high nitrogen and helium abundance, and are the likely progeny of stars with main-sequence mass larger than 3 solar masses. We derive =0.27, and discuss the implication of such a high ratio in connection with the solar neon abundance. We determine the galactic gradients of oxygen and neon, and found Delta log (O/H)/Delta R=-0.01 dex/kpc$ and Delta log (Ne/H)/Delta R=-0.01 dex/kpc. These flat PN gradients do not reconcile with galactic metallicity gradients flattening with time.
description: The Astrophysical Journal, in press
Investigating the role of non-coding RNAs in doxorubicin-induced cardiotoxicity
Creators: name: Yiu, Cheuk Ting (Angela)
Publisher: name: Imperial College London
Year: 2019

description: Long non-coding RNAs (lncRNAs) are emerging as important regulators in many biological processes. However, despite over thousands of lncRNAs have been identified, only a few have been functionally characterised, especially in cardiac diseases and development. The use of anthracyclines such as doxorubicin (DOX) has improved mortality and morbidity in cancer patients, yet associated risks of cardiomyopathy have limited their clinical application. DOX-induced cardiomyopathy (DIC) is frequently irreversible and typically progresses to heart failure. However, little is known about the role of lncRNAs in the underlying mechanisms of DOX-induced cardiotoxicity. RNA-sequencing analysis of a DIC rat model revealed that the highly conserved lncRNA Cyrano was significantly down-regulated by DOX. To evaluate the functions and mechanisms of Cyrano, the highly conserved region and the promoter site were deleted separately by genome editing. Transcriptomic profiling of the transgenic lines showed that gene regulation by Cyrano does not solely depend on its conserved site. Capture hybridisation analysis of RNA targets revealed that Cyrano interacts with 3’UTRs of mRNAs and PABPN1, a crucial component of the mRNA 3’-end processing machinery. The depletion of Cyrano led to widespread 3’UTR lengthening of mRNAs. We propose that Cyrano may contribute to the dysregulation of alternative polyadenylation (APA) induced by DOX through its interaction with PABPN1 in cardiomyocytes. As genes and pathways important in cardiac development are often re-activated in heart failure, we hypothesised that Cyrano also regulates APA in cardiomyocyte differentiation. During the differentiation of cardiomyocytes from human induced pluripotent stem cells (hiPSCs), Cyrano showed a dynamic expression pattern that corresponded to the global APA changes. Together with the Cyrano-PABPN1 interaction in hiPSCs, these suggested that Cyrano may play a role in regulating APA in the early stages of cardiomyocyte differentiation. Further investigations are needed to elucidate the function and mechanisms of Cyrano in cardiomyocyte differentiation and cardiac development.
On the common origin of the AB Dor moving group and the Pleiades cluster
Creators: name: Ortega, V. G.
name: Jilinski, E.
name: de la Reza, R.
name: Bazzanella, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AB Dor is the nearest identified moving group. As with other such groups, the age is important for understanding of several key questions. It is important, for example, in establishing the origin of the group and also in comparative studies of the properties of planetary systems, eventually surrounding some of the AB Dor group members, with those existing in other groups. For AB Dor two rather different estimates for its age have been proposed: a first one, of the order of 50 Myr, by Zuckerman and coworkers from a comparison with Tucana/Horologium moving group and a second one of about 100-125 Myr by Luhman and coworkers from color-magnitude diagrams (CMD). Using this last value and the closeness in velocity space of AB Dor and the Pleiades galactic cluster, Luhman and coworkers suggested coevality for these systems. Because strictly speaking such a closeness does not still guarantee coevality, here we address this problem by computing and comparing the full 3D orbits of AB Dor, Pleiades, alpha Persei and IC 2602. The latter two open clusters have estimated ages of about 85-90 Myr and 50 Myr. The resulting age 119 $\pm$ 20 Myr is consistent with AB Dor and Pleiades being coeval. Our solution and the scenario of open cluster formation proposed by Kroupa and collaborators suggest that the AB Dor moving group may be identified with the expanding subpopulation (Group I) present in this scenario. We also discuss other related aspects as iron and lithium abundances, eventual stellar mass segregation during the formation of the systems and possible fraction of debris discs in AB Dor group.
description: 11 pages, 5 figures and 2 tables
Phase-controlled pathway interferences and switchable fast-slow light in a cavity-magnon polariton system
Creators: name: Zhao, Jie
name: Wu, Longhao
name: Li, Tiefu
name: Liu, Yu-xi
name: Nori, Franco
name: Liu, Yulong
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the phase controlled transmission properties in a compound system consisting of a 3D copper cavity and an yttrium iron garnet (YIG) sphere. By tuning the relative phase of the magnon pumping and cavity probe tones, constructive and destructive interferences occur periodically, which strongly modify both the cavity field transmission spectra and the group delay of light. Moreover, the tunable amplitude ratio between pump-probe tones allows us to further improve the signal absorption or amplification, accompanied by either significantly enhanced optical advance or delay. Both the phase and amplitude-ratio can be used to realize in-situ tunable and switchable fast-slow light. The tunable phase and amplitude-ratio lead to the zero reflection of the transmitted light and an abrupt fast-slow light transition. Our results confirm that direct magnon pumping through the coupling loops provides a versatile route to achieve controllable signal transmission, storage, and communication, which can be further expanded to the quantum regime, realizing coherent-state processing or quantum-limited precise measurements.
description: 24 pages, 5 figures
A real-time Automated Glitch Detection Pipeline at Ooty Radio Telescope
Creators: name: Singha, Jaikhomba
name: Basu, Avishek
name: Krishnakumar, M. A.
name: Joshi, Bhal Chandra
name: Arumugam, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Glitches are the observational manifestations of superfluidity inside neutron stars. The aim of this paper is to describe an automated glitch detection pipeline, which can alert the observers on possible real-time detection of rotational glitches in pulsars. Post alert, the pulsars can be monitored at a higher cadence to measure the post-glitch recovery phase. Two algorithms namely, Median Absolute Deviation (MAD) and polynomial regression have been explored to detect glitches in real time. The pipeline has been optimized with the help of simulated timing residuals for both the algorithms. Based on the simulations, we conclude that the polynomial regression algorithm is significantly more effective for real time glitch detection. The pipeline has been tested on a few published glitches. This pipeline is presently implemented at the Ooty Radio Telescope. In the era of upcoming large telescopes like SKA, several hundreds of pulsars will be observed regularly and such a tool will be useful for both real-time detection as well as optimal utilization of observation time for such glitching pulsars.
description: 10 pages, 6 figures, Accepted for publication in MNRAS
Τεχνικοοικονομική ανάλυση της καλλιέργειας καπνού στο Νομό Κιλκίς
Creators: name: Τσαπαρίδης, Νικόλαος Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Τεχνική αποτελεσματικότητα-Καπνός
Περιβάλλουσα ανάλυση δεδομένων (DEA)
Technical efficiency-Tobacco
Data envelopment analysis (DEA)

description: Στόχος της παρούσας μεταπτυχιακής διατριβής είναι η διερεύνηση της τεχνικής αποτελεσματικότητας στις καπνοπαραγωγικές εκμεταλλεύσεις της Περιφερειακής Ενότητας Κιλκίς, έτσι όπως διαμορφώνονται μέσα στο συνεχώς μεταβαλλόμενο κοινωνικοοικονομικό και πολιτικό περιβάλλον. Επιπροσθέτως, διερευνάται η τάση των παραγωγών ως προς τη συνέχιση ή εγκατάλειψη της εν λόγο καλλιέργειας, σε ενδεχόμενη μείωση της εμπορικής τιμής του προϊόντος σύμφωνα με τις προβλέψεις της Παγκόσμιας Τράπεζας για μελλοντική μείωση της τιμής του καπνού κατά - 30 %. Τα δεδομένα συλλέχθηκαν με πρωτογενή έρευνα με τη χρήση ερωτηματολογίου και αφορούν 88 καπνοπαραγωγικές εκμεταλλεύσεις για την καλλιεργητική περίοδο 2014-2015. Κατά την στατιστική ανάλυση των αποτελεσμάτων προέκυψε ότι ένας στους δύο παραγωγούς θα εγκαταλείψει την καπνοκαλλιέργεια προσπαθώντας να διατηρήσει το εισόδημά του, αντικαθιστώντας τον καπνό με πιο προσοδοφόρες καλλιέργειες. Εν συνεχεία, μέσω της Περιβάλλουσας Ανάλυσης Δεδομένων (Data Envelopment Analysis - DEA) υπολογίστηκε η Τεχνική Αποτελεσματικότητα των γεωργικών εκμεταλλεύσεων με εξαρτημένη μεταβλητή τις πωλήσεις και ανεξάρτητες μεταβλητές το έδαφος, την εργασία και το μεταβλητό κεφάλαιο. Από τα αποτελέσματα της ανάλυσης προέκυψε ότι για να γίνουν περισσότερο αποτελεσματικές οι γεωργικές εκμεταλλεύσεις θα πρέπει να μειώσουν τις εισροές του κατά 39,2 %. Τέλος, οι εκμεταλλεύσεις με γεωργική έκταση έως 10 στρέμματα παρουσίασαν την υψηλότερη Τεχνική Αποτελεσματικότητα (ΤΕVRS= 0,756)
description: The aim of this master thesis is to investigate the technical efficiency in the tobacco farms of the Regional Unit of Kilkis, as it is configured in the ever-changing socioeconomic and political environment. Furthermore, the trend of the producers as to the continuation or abandonment of farming in a possible reduction of the commercial value of the product is being investigated, according to the World Bank forecasts for a future reduction of tobacco price - 30 %. The data was collected by primary research using a questionnaire and concerns about 88 tobacco farms for the crop year 2014-2015. During the statistical analysis of the results it is revealed that one out of two producers will abandon the tobacco cultivation, and in order to maintain their income, they will replace tobacco with more profitable cultivations. Next, through Data Envelopment Analysis (DEA) the technical efficiency of the agricultural holdings is estimated with sales as dependent variable and independent variables soil, labor and variable capital. The results from the analysis showed that the farms in order to become more efficient have to reduce their inputs by 39,2 %. Finally, the agricultural holdings with area to 10 acres had the highest technical efficiency (ΤΕVRS= 0,756)
Fast Calculation of Gravitational Lensing Properties of Elliptical Navarro-Frenk-White and Hernquist Density Profiles
Creators: name: Oguri, Masamune
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new approach for fast calculation of gravitational lensing properties, including the lens potential, deflection angles, convergence, and shear, of elliptical Navarro-Frenk-White (NFW) and Hernquist density profiles, by approximating them by superpositions of elliptical density profiles for which simple analytic expressions of gravitational lensing properties are available. This model achieves high fractional accuracy better than $10^{-4}$ in the range of the radius normalized by the scale radius of $10^{-4}-10^3$. These new approximations are $\sim 300$ times faster in solving the lens equation for a point source compared with the traditional approach resorting to expensive numerical integrations, and are implemented in {\tt glafic} software.
description: 8 pages, 3 figures, accepted for publication in PASP, see https://github.com/oguri/glafic2 for the implementation
Distributions of linear functionals of two parameter Poisson--Dirichlet random measures
Creators: name: James, Lancelot F.
name: Lijoi, Antonio
name: Prünster, Igor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60G57 (Primary) 62F15, 60E07, 60G51 (Secondary)

description: The present paper provides exact expressions for the probability distributions of linear functionals of the two-parameter Poisson--Dirichlet process $\operatorname {PD}(α,θ)$. We obtain distributional results yielding exact forms for density functions of these functionals. Moreover, several interesting integral identities are obtained by exploiting a correspondence between the mean of a Poisson--Dirichlet process and the mean of a suitable Dirichlet process. Finally, some distributional characterizations in terms of mixture representations are proved. The usefulness of the results contained in the paper is demonstrated by means of some illustrative examples. Indeed, our formulae are relevant to occupation time phenomena connected with Brownian motion and more general Bessel processes, as well as to models arising in Bayesian nonparametric statistics.
description: Published in at http://dx.doi.org/10.1214/07-AAP462 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The impact of tail states on the performance of organic bulk heterojunction solar cells
Creators: name: Wu, Jiaying
Publisher: name: Imperial College London
Year: 2019

description: This thesis is concerned with quantification of the effects of tail states on charge transport and non-geminate recombination loss in organic bulk heterojunction solar cells. After the description of the context of this work, the theoretical background and methodology employed are introduced. In this thesis, a variety of donor/acceptor blend systems are investigated. The first results chapter reports a study of the changes in charge carrier densities and charge carrier lifetimes following PCBM oxidation and burn-in degradation systems compared to fresh devices using charge extraction and transient photovoltage analysis. The resulting changes in tail state density and recombination dynamics of the photoactive layer are quantified, and shown to explain changes in device performance, specifically reductions Voc and FF. The second results chapter analyses the changes in device performance of different donor/acceptor blend systems under high and low light operation. The associated light intensity dependent changes in optoelectronic properties are investigated, in particular, the origins of the reduced Voc and increased FF observed at low light levels. Differences in performance are related to the extent to which tail states can particularly affect device performance under low light level operation. In the third results chapter, the impact of active layer thickness on the efficiency of organic bulk heterojunction systems is explored by combining experiment and 1D drift-diffusion modelling. In particular, the factors limiting the photocurrent generation efficiency of thick devices is discussed through the analysis of carrier collection and recombination dynamics using a combination of charge extraction (CE) and transient photovoltage (TPV) on a series of thickness dependent devices. For thick devices, the depletion width is determined to be less than the device thickness, resulting in losses at short circuit and lower on photocurrent collection. Different situations that can cause small depletion layer widths are explored and discussed. This study suggests that for the donor/acceptor blends studied are not, the space charge layer width is not limited by unintentional doped, rather the origin of this small space charge layer is because of the accumulation, under irradiation, of charge carriers in sub-bandgap tail states. The final results chapter presents an analysis of the effects of carrier collection and recombination dynamics on FF of different systems. The charge carrier density across the J-V iv curve and its recombination loss are quantified. Qualitative correlations between the values of FF and mobility-life product, Langevin and non-Langevin behaviour are explored.
Federal Marketing Orders for Horticultural Crops
Creators: name: Powers, Nicholas J.
name: Powers, Nicholas J.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: This bulletin describes the purpose of Federal marketing orders and their effects on growers, marketers, input suppliers, food processors, and consumers. Many Federal marketing orders have regulations for funding promotion and research and for establishing package, container, grade, and size requirements. These regulations intend to boost sales by increasing buyer awareness of the product, developing more desirable products, and reducing marketing costs . A few marketing orders, with regulations that control the volume of produce entering certain markets, are Intended to even out supplies and prices. These regulations can raise farm prices In the regulated market if shipments are restricted. However, production increases resulting from higher prices can subsequently reduce farm prices.
Grammatical elicitation: Complementation
Creators: name: Ronoh, Chepkemoi
name: Bossi, Madeline
name: Kipkoech, Linus
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .wav file and one .pdf file. Elicitation of different complement-taking verbs with and without inflected complementizers. Exploring the presence vs. absence of saying semantics associated with inflected complementizers.
Inter-domain Multi-relational Link Prediction
Creators: name: Phuc, Luu Huu
name: Takeuchi, Koh
name: Okajima, Seiji
name: Tolmachev, Arseny
name: Takebayashi, Tomoyoshi
name: Maruhashi, Koji
name: Kashima, Hisashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Multi-relational graph is a ubiquitous and important data structure, allowing flexible representation of multiple types of interactions and relations between entities. Similar to other graph-structured data, link prediction is one of the most important tasks on multi-relational graphs and is often used for knowledge completion. When related graphs coexist, it is of great benefit to build a larger graph via integrating the smaller ones. The integration requires predicting hidden relational connections between entities belonged to different graphs (inter-domain link prediction). However, this poses a real challenge to existing methods that are exclusively designed for link prediction between entities of the same graph only (intra-domain link prediction). In this study, we propose a new approach to tackle the inter-domain link prediction problem by softly aligning the entity distributions between different domains with optimal transport and maximum mean discrepancy regularizers. Experiments on real-world datasets show that optimal transport regularizer is beneficial and considerably improves the performance of baseline methods.
description: Camera-ready version, ECML-PKDD 2021
Photon-correlation Fourier spectroscopy
Creators: name: Brokmann, Xavier
name: Bawendi, Moungi
name: Coolen, Laurent
name: hermier, Jean-Pierre
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe a method to probe the spectral fluctuations of a transition over broad ranges of frequencies and timescales with the high spectral resolution of Fourier spectroscopy, and a temporal resolution as high as the excited state lifetime, even in the limit of very low photocounting rates. The method derives from a simple relation between the fluorescence spectral dynamics of a single radiating dipole and its fluorescence intensity correlations at the outputs of a continuously scanning Michelson interferometer. These findings define an approach to investigate the fast fluorescence spectral dynamics of single molecules and other faint light sources beyond the time-resolution capabilities of standard spectroscopy experiments.
description: 7 pages, 3 figures
A programming library for the construction of 3-D wdigets
Creators: name: Lau, Tony Tat Chung
Publisher: name: University of British Columbia
Year: 2009

description: 3-D graphical user interfaces (3-D GUTs) may be beneficial to application programs that need to manipulate 3-D objects or multi-dimensional data. However, most existing 3-D graphics programming systems do not provide primitives for building 3-D GUTs; instead, programmers have to deal directly with input device events and 3-D graphics. Systems that do either are research systems that are not available to application programmers or are difficult to extend. For these reasons, explorations in the use of 3-D GUTs have been difficult. An extensible and object-oriented 3-D Widget Programming Library is implemented. It is an extension to Inventor (a widely available 3-D programming library) and lets programmers contruct new widgets (3-D scene objects with interactive behaviors) using four types of highlevel components that are responsible for user interface, visual feedback, application interface and general computation. A widget built with this library is able to control and display one or more application states, interact with users in a click-drag-release fashion, and convey the application states through the relative positions and orientations among the widget’s parts. A widget interfaces with an application program through either direct attachments to scene objects or callback functions.
Additional file 19 of Genome-wide identification, classification, and expression analysis of the JmjC domain-containing histone demethylase gene family in birch
Creators: name: Chen, Bowei
name: Ali, Shahid
name: Zhang, Xu
name: Zhang, Yonglan
name: Wang, Min
name: Zhang, Qingzhu
name: Xie, Linan
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 19: Figure S3. Protein sequence alignments of KDM3/JHDM2, JMJD6 and JmjC domain-only subfamily among birch, Arabidopsis, rice and may.
Η επίδραση της εξάρτησης της ειδικής αγωγιμότητας από τη θερμοκρασία στο σχεδιασμό της θεραπείας με ραδιοσυχνοτικό θερμοκαυτηριασμό (RFA)
Creators: name: Σαρόγλου, Ιωάννης Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ραδιοσυχνοτικός θερμοκαυτηριασμός
Ειδική αγωγιμότητα
Βιοθερμική εξίσωση του Pennes
RF Ablation
Electrical conductivity
Pennes bioheat equation

description: Ο ραδιοσυχνοτικός θερμοκαυτηριασμός (RFA) χρησιμοποιείται για τη θεραπεία μικρών καρκινικών όγκων μέσω της θερμικής νέκρωσής τους. Τα τελευταία χρόνια, οι εξελίξεις σε υπολογιστικούς πόρους και η ευρεία διαθεσιμότητά τους έχουν καταστήσει εφικτό τον εξατομικευμένο σχεδιασμό θεραπείας RFA. Ωστόσο, αυτός περιλαμβάνει αρκετούς περιορισμούς και προσεγγίσεις. Σκοπός της παρούσας εργασίας είναι να αναδειχθεί η σημασία της εξάρτησης της ειδικής αγωγιμότητας από τη θερμοκρασία και η επίδρασή της στην προβλεπόμενη τελική κατανομή της θερμοκρασίας και του όγκου βλάβης. Το θεωρητικό μοντέλο που προσομοιώθηκε ήταν διδιαμερισματικό, με διαφορετική ηλεκτρική αγωγιμότητα και αιμάτωση για τον καρκινικό όγκο και τον υγιή ηπατικό ιστό, ενώ προσομοιώθηκε ένα απλό ηλεκτρόδιο σε διάφορες θέσεις μέσα στον όγκο. Η εξίσωση Laplace και η βιοθερμική εξίσωση του Pennes επιλύθηκαν αριθμητικά με τη μέθοδο των πεπερασμένων διαφορών και εφαρμόστηκαν οι κατάλληλες οριακές συνθήκες, ενώ ο προγραμματισμός έγινε σε γλώσσα C++. Παρατηρήθηκε ότι ο όγκος βλάβης αλλάζει αρκετά στις υποθέσεις που η ηλεκτρική αγωγιμότητα μεταβάλλεται με τη θερμοκρασία. Εκτενέστερες μελέτες σχετικά με τις αλλαγές των ιδιοτήτων των ιστών στις θερμοκρασίες που επιτυγχάνονται στον RFA, θα μπορούσαν να οδηγήσουν σε πιο ακριβείς προβλέψεις της στην έκβαση μιας εξατομικευμένης θεραπείας
description: Radiofrequency Ablation (RFA) is used for the treatment of small tumors through thermal necrosis. In recent years, developments in computing resources and their wide availability have made it possible to create personalized RFA treatment plans. However, this includes several limitations and approaches. The purpose of this study is to highlight the importance of assuming a temperature-dependent electrical conductivity and its effect in the predicted final temperature distribution and the necrosis volume. The simulated theoretical model was a two-compartmental one, for which different electrical conductivity and blood perfusion in the spherical tumor and the surrounding healthy liver tissue was assumed. A single (plain) electrode was entered inside the tumor (at several positions). The Laplace equation and the bioheat equation of Pennes were numerically solved using FDM and the appropriate boundary conditions were applied, while the program was coded in C++. The results showed that the necrosis volume changed considerably when temperature-dependent conductivity was assumed. More extensive studies on the changes of tissue properties at RFA temperatures could lead to more accurate predictions of a personalized RFA treatment outcome
A new mechanism for negative refraction and focusing using selective diffraction from surface corrugation
Creators: name: Lu, W. T.
name: Huang, Y. J.
name: Vodo, P.
name: Banyal, R. K.
name: Perry, C. H.
name: Sridhar, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Refraction at a smooth interface is accompanied by momentum transfer normal to the interface. We show that corrugating an initially smooth, totally reflecting, non-metallic interface provides a momentum kick parallel to the surface, which can be used to refract light negatively or positively. This new mechanism of negative refraction is demonstrated by visible light and microwave experiments on grisms (grating-prisms). Single-beam all-angle-negative-refraction is achieved by incorporating a surface grating on a flat multilayered material. This negative refraction mechanism is used to create a new optical device, a grating lens. A plano-concave grating lens is demonstrated to focus plane microwaves to a point image. These results show that customized surface engineering can be used to achieve negative refraction even though the bulk material has positive refractive index. The surface periodicity provides a tunable parameter to control beam propagation leading to novel optical and microwave devices.
description: 6 pages, 7 figures in RevTex format