cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Deep Learning for the Analysis of Disruption Precursors based on Plasma Tomography
Creators: name: Ferreira, Diogo R.
name: Carvalho, Pedro J.
name: Sozzi, Carlo
name: Lomas, Peter J.
name: Contributors, JET
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The JET baseline scenario is being developed to achieve high fusion performance and sustained fusion power. However, with higher plasma current and higher input power, an increase in pulse disruptivity is being observed. Although there is a wide range of possible disruption causes, the present disruptions seem to be closely related to radiative phenomena such as impurity accumulation, core radiation, and radiative collapse. In this work, we focus on bolometer tomography to reconstruct the plasma radiation profile and, on top of it, we apply anomaly detection to identify the radiation patterns that precede major disruptions. The approach makes extensive use of machine learning. First, we train a surrogate model for plasma tomography based on matrix multiplication, which provides a fast method to compute the plasma radiation profiles across the full extent of any given pulse. Then, we train a variational autoencoder to reproduce the radiation profiles by encoding them into a latent distribution and subsequently decoding them. As an anomaly detector, the variational autoencoder struggles to reproduce unusual behaviors, which includes not only the actual disruptions but their precursors as well. These precursors are identified based on an analysis of the anomaly score across all baseline pulses in two recent campaigns at JET.
description: (to appear)
What sunspots are whispering about covid-19?
Creators: name: Morchiladze, Mariam M.
name: Silagadze, Tamila K.
name: Silagadze, Zurab K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Several studies point to the antimicrobial effects of ELF electromagnetic fields. Such fields have accompanied life from the very beginning, and it is possible that they played a significant role in its emergence and evolution. However, the literature on the biological effects of ELF electromagnetic fields is controversial, and we still lack an understanding of the complex mechanisms that make such effects, observed in many experiments, possible. The Covid-19 pandemic has shown how fragile we are in the face of powerful processes operating in the biosphere. We believe that understanding the role of ELF electromagnetic fields in regulating the biosphere is important in our fight against Covid-19, and research in this direction should be intensified.
description: 15 pages, no figures, to be published in Medical Hypotheses
Differential cross section and photon beam asymmetry for the gamma n -> K+ Sigma- reaction at Egamma=1.5-2.4 GeV
Creators: name: Kohri, H.
name: Ahn, D. S.
name: Ahn, J. K.
name: Akimune, H.
name: Asano, Y.
name: Chang, W. C.
name: Date', S.
name: Ejiri, H.
name: Fukui, S.
name: Fujimura, H.
name: Fujiwara, M.
name: Hasegawa, S.
name: Hicks, K.
name: Hotta, T.
name: Imai, K.
name: Ishikawa, T.
name: Iwata, T.
name: Kawai, H.
name: Kino, K.
name: Makino, S.
name: Mart, T.
name: Matsuda, T.
name: Matsumura, T.
name: Mibe, T.
name: Miyabe, M.
name: Miyachi, Y.
name: Muramatsu, N.
name: Nakano, T.
name: Niiyama, M.
name: Nomachi, M.
name: Ohashi, Y.
name: Ooba, T.
name: Oshuev, D. S.
name: Rangacharyulu, C.
name: Sakaguchi, A.
name: Shagin, P. M.
name: Shimizu, A.
name: Shimizu, H.
name: Sugaya, Y.
name: Sumihama, M.
name: Toi, Y.
name: Toyokawa, H.
name: Yonehara, K.
name: Yorita, T.
name: Yoshimura, M.
name: Yosoi, M.
name: Zegers, R. G. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Differential cross sections and photon beam asymmetries have been measured for the gamma n -> K+ Sigma- and gamma p -> K+ Sigma0 reactions separately using liquid deuterium and hydrogen targets with incident linearly polarized photon beams of Egamma=1.5-2.4 GeV at 0.6
description: 5 pages, 3 figures, accepted by Phys. Rev. Lett
title: Impact of Urbanization on Salt Marsh Habitat Value for Nekton Resources in the Northern Gulf of Mexico.
Creators: name: Lowe, Michael R.
name: Peterson, Mark S.
Publisher: name: ASC 2013 - Theme session K
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Salt marsh habitats are a defining feature of temperate coastal landscapes and are among the most anthropogenically-altered ecosystems in the world. Amongst these alterations, urbanization (i.e., the serial replacement of natural salt marsh habitats with man made structures) has the potential to disrupt the delivery of numerous ecosystem services that relate to the maintenance of commercially and recreationally important nekton (i.e., fish and decapod crustaceans) assemblages. In this paper, we use relative catch per unit effort (CPUE) to show that nekton assemblages are functionally altered in highly urbanized salt marsh landscapes. Further, we use a suite of quantitative stable isotope metrics to show increased food chain length and homogenous resource use in urbanized coastal landscapes. However, increased food chain length could also be interpreted as a nutritional stress response to inadequate foraging patterns. Overall, these results support the hypothesis that coastal urbanization negatively impacts salt marsh nekton assemblages and ultimately hinders support of valuable fisheries.
Study on operation of rice collaborative farm project: A case in Ku Suan Taeng Sub-district, Ban Mai Chaiyaphot District, Buri Ram Province
Creators: name: Arunee Promkhambut
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: rice farmers
Collaborative Farm Project
farmer group
problem
suggestion

description: Khon Kaen Agriculture Journal, 52, 6, 1144-1163
Constraints on fall-back disks in radio pulsars and anomalous X-ray pulsars
Creators: name: Jones, P. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Calculations have been made of fall-back disk heating by the pulsar wind as distinct from the soft X-rays emitted by the neutron-star surface. The relation between these heating rates and measured near-infrared fluxes in the K and Ks bands places severe constraints on the inner radii of any fall-back disks that may be present in radio pulsars and in some anomalous X-ray pulsars. The lower limits found are so large that the disks concerned can have no significant effect on pulsar spin-down.
description: To be published in Monthly Notices of the Royal Astronomical Society
Microelectromechanical deformable mirror development for high-contrast imaging, part 2: the impact of quantization errors on coronagraph image contrast
Creators: name: Ruane, Garreth
name: Echeverri, Daniel
name: Bendek, Eduardo
name: Kern, Brian D.
name: Marx, David
name: Mawet, Dimitri
name: Prada, Camilo Mejia
name: Riggs, A J Eldorado
name: Seo, Byoung-Joon
name: Serabyn, Eugene
name: Shaklan, Stuart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Stellar coronagraphs rely on deformable mirrors (DMs) to correct wavefront errors and create high contrast images. Imperfect control of the DM limits the achievable contrast and, therefore, the DM control electronics must provide fine surface height resolution and low noise. Here, we study the impact of quantization errors due to the DM electronics on the image contrast using experimental data from the High Contrast Imaging Testbed (HCIT) facility at NASA's Jet Propulsion Laboratory (JPL). We find that the simplest analytical model gives optimistic predictions compared to real cases, with contrast up to 3 times better, which leads to DM surface height resolution requirements that are incorrectly relaxed by 70%. We show that taking into account the DM actuator shape, or influence function, improves the analytical predictions. However, we also find that end-to-end numerical simulations of the wavefront sensing and control process provide the most accurate predictions and recommend such an approach for setting robust requirements on the DM control electronics. From our experimental and numerical results, we conclude that a surface height resolution of approximately 6pm is required for imaging temperate terrestrial exoplanets around Solar-type stars at wavelengths as small as 450nm with coronagraph instruments on future space telescopes. Finally, we list the recognizable characteristics of quantization errors that may help determine if they are a limiting factor.
Shallot production system and extension needs of shallot production of farmers in Ban Kok subdistrict, Chatturat district, Chaiyaphum province
Creators: name: Sukanlaya Choenkwan
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: crop after rice
shallot production system
extension needs
Chaiyaphum Province

description: Khon Kaen Agriculture Journal, 52, 6, 1164-1176
Η Ασφάλεια (Αστυνόμευση) στα Συστήματα Μεταφορών. Μέσα μεταφοράς και λειτουργικές εγκαταστάσεις
Creators: name: Σφέτκος, Απόστολος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Ασφάλεια
Αστυνόμευση
Μέσα μαζικής μεταφοράς
Safety
Security
Means of Transportation

description: Η διπλωματική αυτή εργασία πραγματεύεται θέματα που αφορούν την αστυνόμευση (security) στα συστήματα μεταφορών. Με την έννοια αστυνόμευση νοείται η προστασία από κάθε παράνομη ενέργεια που μπορεί να έχει ανεπιθύμητες επιπτώσεις τόσο στο ίδιο το σύστημα (υλικές ζημίες) αλλά κυρίως στους επιβάτες που μεταφέρονται (τραυματισμούς, θανάτους κ.λπ) και στα εμπορεύματα που διακινούνται (κλοπές, αβαρίες κ.λπ). Η έρευνα περιορίζεται στα θαλάσσια, σιδηροδρομικά και εναέρια συστήματα μεταφορών και αφορά τις λειτουργικές εγκαταστάσεις (λιμάνια, αεροδρόμια, σιδηροδρομικές εγκαταστάσεις) και τα μεταφορικά μέσα (τραίνα, μετρό, τραμ, αεροπλάνα και πλοία). Στα πλαίσιο αυτό για το κάθε ένα από τα επί μέρους συστήματα μεταφοράς, δίνεται μια σύντομη περιγραφή του συστήματος, αναζητούνται και ιεραρχούνται οι ενδεχόμενες απειλές, καταγράφονται τα μέτρα που χρησιμοποιούνται σήμερα για την αστυνόμευσή τους. Τα μέτρα αυτά μπορεί να είναι προληπτικά ή διαχειριστικά. Περιγράφονται επίσης οι φορείς που είναι αρμόδιοι για την αστυνόμευση και γενικότερα το θεσμικό πλαίσιο με το οποίο αυτοί λειτουργούν, δίνονται παραδείγματα εφαρμογής από την Ελλάδα και το εξωτερικό, αναγνωρίζονται τα κενά που υπάρχουν σήμερα στα υφιστάμενα μέτρα αστυνόμευσης και προτείνονται πρόσθετα μέτρα για την αποτελεσματικότερη αστυνόμευση. Τέλος επιχειρείται μία σύγκριση των μέτρων αστυνόμευσης που χρησιμοποιούνται σήμερα στα τρία εξεταζόμενα συστήματα μεταφορών.
description: This diploma paper addresses issues relating to policing (security) in transportation systems. In this sense, policing means protection against any illegal action that may have adverse consequences on both the system itself (property damages), and especially on passengers (injuries, deaths, etc.) and on goods transfers (thefts, breakdowns, etc). The research is limited to marine, rail and air transport systems and concerns operation facilities (ports, airports, railways) and transportation (trains, subways, trams, planes and ships). In this context for each of the transport systems, a brief description of the system is given, potential threats are sought and prioritized and the measures currently used for policing are recorded. These measures can be preventive or deal with management issues. Also, the bodies responsible for policing in general the institutional framework within which they operate are described, examples of applications from Greece and abroad are provided, the gaps in currently existing policing measures are pointed and additional measures for more effective policing are proposed. Finally, a comparison of policing measures currently used in three transportation systems in question is attempted.
title: Macroalgal assemblage's complexity affects fish distribution patterns by mediating prey-predator relationships
Creators: name: Thiriet, Pierre
name: Cheminee, Adrien
name: Mangialajo, Luisa
name: Branthome, Samuel
name: Guidetti, Paolo
name: Bianchimani, Olivier
name: Basthardbogain, Solène
name: Cottalorda, Jean-Michel
name: Arceo, Hazel
name: Dominici, Jean-Marie
name: Lejeune, Pierre
name: Moranta, Joan
name: Escoubet, Pierre
name: Francour, Patrice
Publisher: name: ASC 2013 - Theme session K
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. In Mediterranean infralittoral rocky reefs, macroalgal forests formed by Cystoseira species regress as a consequence of anthropogenic stressors, and are usually replaced by less complex assemblages (e.g. shrub-like photophilous seaweeds, coralline barrens). In order to assess the consequences of such a shift, we described the patterns of fish assemblages across habitat types of decreasing macroalgal assemblage's complexity. Then, we set up tank experiments (using plastic algal mimics) to compare across habitat types (Forest, Shrub, Barren) two aspects of prey-predator relationships: prey survival and anti-predator behavior. Our field sampling revealed that Cystoseira forests support higher fish density and diversity than shrubs and barrens. Our tank experiments suggested that this could be due to the higher shelter availability in the forest canopy that may affect both predation rates and active habitat choice. Assessing the relative contribution of these two processes would help to predict fish assemblage structures under scenarios of further human-driven losses of Cystoseira forests.
LSST: Comprehensive NEO Detection, Characterization, and Orbits
Creators: name: Ivezic, Z.
name: Tyson, J. A.
name: Juric, M.
name: Kubica, J.
name: Connolly, A.
name: Pierfederici, F.
name: Harris, A. W.
name: Bowell, E.
name: Collaboration, the LSST
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) The Large Synoptic Survey Telescope (LSST) is currently by far the most ambitious proposed ground-based optical survey. Solar System mapping is one of the four key scientific design drivers, with emphasis on efficient Near-Earth Object (NEO) and Potentially Hazardous Asteroid (PHA) detection, orbit determination, and characterization. In a continuous observing campaign of pairs of 15 second exposures of its 3,200 megapixel camera, LSST will cover the entire available sky every three nights in two photometric bands to a depth of V=25 per visit (two exposures), with exquisitely accurate astrometry and photometry. Over the proposed survey lifetime of 10 years, each sky location would be visited about 1000 times. The baseline design satisfies strong constraints on the cadence of observations mandated by PHAs such as closely spaced pairs of observations to link different detections and short exposures to avoid trailing losses. Equally important, due to frequent repeat visits LSST will effectively provide its own follow-up to derive orbits for detected moving objects. Detailed modeling of LSST operations, incorporating real historical weather and seeing data from LSST site at Cerro Pachon, shows that LSST using its baseline design cadence could find 90% of the PHAs with diameters larger than 250 m, and 75% of those greater than 140 m within ten years. However, by optimizing sky coverage, the ongoing simulations suggest that the LSST system, with its first light in 2013, can reach the Congressional mandate of cataloging 90% of PHAs larger than 140m by 2020.
description: 10 pages, color figures, presented at IAU Symposium 236
Factors affecting farmersโ adoption of good agricultural practices for mango in Bang Khla District, Chachoengsao Province
Creators: name: Nathitakarn Phayakka
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: adoption
GAP
mango
Bang Khla District
Chachoengsao Province

description: Khon Kaen Agriculture Journal, 52, 6, 1177-1188
Efficacy of bioproduct Bacillus spp. for controlling root and stem rot disease of durian caused by Phytophthora palmivora (Butler)
Creators: name: Pornsil Seephueak
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: bioproduct
Bacillus
root and stem rot disease
durian
Phytophthora palmivora

description: Khon Kaen Agriculture Journal, 52, 6, 1189-1200
Pyropia hiemalis Varela-Alvarez, Guiry & Serrao 2023, comb. nov.
Creators: name: Varela-Álvarez, Elena
name: Guiry, Michael D.
name: Serrão, Ester A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Rhodophyta
Bangiophyceae
Bangiales
Bangiaceae
Pyropia
Pyropia hiemalis

description: Pyropia hiemalis (Kylin) Varela-Álvarez, Guiry & Serrão, comb. nov.
Porphyra hiemalis Kylin, Algenfl. Schwed. Westk: 112, pl. 3, fig. 2 (Kylin 1907).
LECTOTYPE. — Alg. Scan. Exsicc. no. 211 as “ Porphyra laciniata Ag. Var. Porphyra vulgaris Harv. Phyc. Brit.? Ad saxa in mari Bahusiae – Oct.” [leg.] S. Åkermark (lecto-, designated here, UPS).
ISOLECTOYTPES. — Widely distributed with the original exsiccata.
LECTOTYPE LOCALITY. — Sweden. Stora Varholmen, leg. S. Åkermark.
EPITYPE. — Sweden. Amundon, 11.IV.98, Athanasios Athanasiadis, GALW 011329 (epi-, designated here, DBN!; GenBank[OP718627]).
DISTRIBUTION. — Currently known only from SW Sweden.
EMENDED DESCRIPTION
Gametophyte blades linear, 10-60 mm high and 3-20 mm wide, with an irregular undulate margin, with linear to pear shaped on the base. Holdfast clearly separated from the thallus; colour red to brown on outer edges. Dioecious, occasionally monoecious; reproductive structures marginal; dark red zygotosporangia and female sorus on the base of the blade, winter seasonality, on rocks, high littoral, very wave exposed area, and distinct rbc S- rbc L spacer sequences.
NOTE
Designation of a lectotype for Porphyra linearis Greville from a specimen from Sidmouth at E by Brodie & Irvine (2003: 124) was not valid as the phrase “designated here” or an equivalent was not used as required after 1 January 2001 (Art. 7.11; Turland et al. 2018). We here designate formally the same specimen (‘Sidmouth, Spring’, E!) as lectotype.
description: Published as part of Varela-Álvarez, Elena, Guiry, Michael D. & Serrão, Ester A., 2023, A taxonomic assessment of Pyropia hiemalis (Kylin) Varela-Álvarez, Guiry & Serrão, comb. nov. (Bangiaceae, Bangiophyceae), pp. 101-109 in Cryptogamie, Algologie 20 (5) on pages 106-107, DOI: 10.5252/cryptogamie-algologie2023v44a5, http://zenodo.org/record/8319066
Field-Induced Ferromagnetic Order and Colossal Magnetoresistance in La_{1.2}Sr_{1.8}Mn_2O_7: a ^{139}La NMR study
Creators: name: Shiotani, Y.
name: Sarrao, J. L.
name: Zheng, Guo-qing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In order to gain insights into the origin of colossal magneto-resistance (CMR) in manganese oxides, we performed a ^{139}La NMR study in the double-layered compound La_{1.2}Sr_{1.8}Mn_2O_7. We find that above the Curie temperature T_C=126 K, applying a magnetic field induces a long-range ferromagnetic order that persists up to T=330 K. The critical field at which the induced magnetic moment is saturated coincides with the field at which the CMR effect reaches to a maximum. Our results therefore indicate that the CMR observed above T_C in this compound is due to the field-induced ferromagnetism that produces a metallic state via the double exchange interaction.
The drag of photons by electric current in quantum wells
Creators: name: Budkin, G. V.
name: Makhov, I. S.
name: Firsov, D. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The flow of electric current in quantum well breaks the space inversion symmetry, which leads to the dependence of the radiation transmission on the relative orientation of current and photon wave vector, this phenomenon can be named current drag of photons. We have developed a microscopic theory of such an effect for intersubband transitions in quantum wells taking into account both depolarization and exchange-correlation effects. It is shown that the effect of the current drag of photons originates from the asymmetry of intersubband optical transitions due to the redistribution of electrons in momentum space. We show that the presence of dc electric current leads to the shift of intersubband resonance position and affects both transmission coefficient and absorbance in quantum wells.
THE LIFE AND ACTIVITY OF SHEIKH MUHAMMAD ABDO, THE CREATOR OF ARAB-MUSLIM THOUGHT OF THE 20TH CENTURY
Creators: name: Sharafutdinova, Rukhsora
name: Izzetova, E.M.
Publisher: name: Zenodo
Year: 2024

description: The purpose of writing this article is a holistic study of the life and scientific work of the Islamic reformer and modernist Sheikh Muhammad Abdo. To substantiate the thesis that Muhammad Abdo’s modernism is a synthesis of Islam and modern thought. The socio-philosophical works of the thinker were aimed at uniting civilizations and overcoming contradictions and conflicts. To show that Muhammad Abdo’s activities were multifaceted, he especially clearly showed his talent in the educational sphere, in reforming the system of higher religious education and journalism.
Nonequilibrium Fluctuation-Response Relations: From Identities to Bounds
Creators: name: Aslyamov, Timur
name: Ptaszyński, Krzysztof
name: Esposito, Massimiliano
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In nonequilibrium steady states of Markov jump processes, we derive exact Fluctuation-Response Relations (FRRs) that express the covariance between any pair of currents in terms of static responses in a notably simple form, thus generalizing the fluctuation-dissipation theorem far from equilibrium. We begin by considering perturbations in the symmetric part of the rates. We demonstrate that FRRs imply a hierarchy of thermodynamic bounds. These hierarchies prove the recently conjectured Response Thermodynamic Uncertainty Relation (R-TUR), which bounds the ratio between any current's response and its variance by the entropy production rate (EPR). We furthermore strengthen this bound in two distinct ways, using partial EPR in one case and pseudo-EPR in the other. For perturbations in the antisymmetric part of the rates, we show that the ratio between any current's response and its variance is bounded by traffic, a metric representing the total number of transitions per unit time in the system. As an application, we use FRRs to explain the origin of positive correlations between currents in Coulomb-blockaded systems previously observed in experiments.
description: Paper is published in Physical Review Letters
The occurrence of thrips on grapevine and their control of insecticides and bio-insecticides
Creators: name: Natdanai Likhitrakarn
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: Scirtothrips dorsalis
grapevine pests
K-soap
herbal fermented water
Beauveria bassiana

description: Khon Kaen Agriculture Journal, 52, 6, 1201-1215
A Comparison of SDSS Standard Star Catalog for Stripe 82 with Stetson's Photometric Standards
Creators: name: Ivezic, Z.
name: Smith, J. A.
name: Miknaitis, G.
name: Lin, H.
name: Tucker, D.
name: Lupton, R.
name: Knapp, G.
name: Gunn, J.
name: Strauss, M.
name: Holtzman, J.
name: Kent, S.
name: Yanny, B.
name: Schlegel, D.
name: Finkbeiner, D.
name: Padmanabhan, N.
name: Rockosi, C.
name: Juric, M.
name: Bond, N.
name: Lee, B.
name: Jester, S.
name: Harris, H.
name: Harding, P.
name: Brinkmann, J.
name: York, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare Stetson's photometric standards with measurements listed in a standard star catalog constructed using repeated SDSS imaging observations. The SDSS catalog includes over 700,000 candidate standard stars from the equatorial stripe 82 (|Dec|<1.266 deg) in the RA range 20h 34' to 4h 00', and with the $r$ band magnitudes in the range 14--21. The distributions of measurements for individual sources demonstrate that the SDSS photometric pipeline correctly estimates random photometric errors, which are below 0.01 mag for stars brighter than (19.5, 20.5, 20.5, 20, 18.5) in ugriz, respectively (about twice as good as for individual SDSS runs). We derive mean photometric transformations between the SDSS gri and the BVRI system using 1165 Stetson stars found in the equatorial stripe 82, and then study the spatial variation of the difference in zeropoints between the two catalogs. Using third order polynomials to describe the color terms, we find that photometric measurements for main-sequence stars can be transformed between the two systems with systematic errors smaller than a few millimagnitudes. The spatial variation of photometric zeropoints in the two catalogs typically does not exceed 0.01 magnitude. Consequently, the SDSS Standard Star Catalog for Stripe 82 can be used to calibrate new data in both the SDSS ugriz and the BVRI systems with a similar accuracy.
description: 10 pages, color figures, presented at the meeting "The Future of Photometric, Spectrophotometric, and Polarimetric Standardization", Blankenberge, May 8-11, 2006
Assessment of resistance to bacterial wilt incited by Ralstonia solanacearum with fruit yield and its components of tomato germplasms
Creators: name: Nakarin Jeeatid
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: fruit quality
processing tomato
susceptible variety
soil-borne disease

description: Khon Kaen Agriculture Journal, 52, 6, 1216-1230
Making it open – putting cheminformatics to use against the Ebola virus
Creators: name: Ekins, Sean
Publisher: name: F1000Research
Year: 2015

description: In 2014 Africa faced the most severe Ebola Virus epidemic to date. With no treatment in sight, limited knowledge of the virus and prompted by discussions on Twitter, I set about to see how much could be done without a lab to test compounds. In the past couple of years there have been multiple high throughput screens in an effort to find compounds active against the Ebola Virus, the challenge however, is that for most molecules the mechanism or a target is unknown. I focused initially on two antimalarials (amodiaquine and chloroquine) and two selective estrogen receptor modulators (clomiphene and toremifene). I used several cheminformatics approaches to propose a common pharmacophore, receptor-based pharmacophores and docking. Several database searches with the pharmacophores were made available on FigShare and eventually led to a paper on the work. With collaborators we also summarized what could be done for future outbreaks as well as highlighted that FDA approved drugs were apparently active at physiologically relevant concentrations. In addition we curated a literature dataset of compounds shown to be active in vitro or in vivo against the Ebola Virus and used an experienced medicinal chemist to evaluate the molecules. Most recently two-pore channels were shown as key for viral entry into host cells and seven small molecules tested as inhibitors of infection. These molecules were used to create a common feature pharmacophore that was compared with the previously published pharmacophore, suggesting the 4 compounds may also be targeting this channel. Searching the literature dataset with the two-pore channel pharmacophore suggested additional molecules that might share the same mechanism. To date this cheminformatics work has resulted in 4 manuscripts published in F1000Research as well as data and models that have been shared openly.
title: Coastal habitat use by commercially and ecologically important species
Creators: name: Seitz, Rochelle D.
name: Wennhage, Håkan
name: Bergström, Ulf
name: Lipcius, Romuald N.
name: Ysebaert, Tom
Publisher: name: ASC 2013 - Theme session K
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Many exploited fish and macroinvertebrates that utilize the coastal zone have declined, and the causes of these declines, apart from overfishing, remain largely unresolved. Degradation of essential habitats has resulted in habitats that are no longer adequate to fulfill nursery, feeding, or reproductive functions, yet the degree to which coastal habitats are important for exploited species has not been quantified.
X-ray Properties of Black-Hole Binaries
Creators: name: Remillard, Ronald A.
name: McClintock, Jeffrey E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the properties and behavior X-ray binaries that contain an accreting black hole. The larger majority of such systems are X-ray transients, and many of them were observed in daily pointings with RXTE throughout the course of their outbursts. The complex evolution of these sources is described in terms of common behavior patterns illustrated with comprehensive overview diagrams for six selected systems. Central to this comparison are three X-ray states of accretion, which are reviewed and defined quantitatively. Each state yields phenomena that arise in strong gravitational fields. We sketch a scenario for the potential impact of black hole observations on physics and discuss a current frontier topic: the measurement of black hole spin.
description: 39 pages, 12 figures, ARAA, vol. 44, in press
Exploring partially observable Markov decision processes by exploting structure and heuristic information
Creators: name: Leung, Siu-Ki
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is about chance and choice, or decisions under uncertainty. The desire for creating an intelligent agent performing rewarding tasks in a realistic world urges for working models to do sequential decision making and planning. In responding to this grand wish, decision-theoretic planning (DTP) has evolved from decision theory and control theory, and has been applied to planning in artificial intelligence. Recent interest has been directed toward Markov Decision Processes (MDPs) introduced from operations research. While fruitful results have been tapped from research in fully observable MDPs, partially observable MDPs (POMDPs) are still too difficult to solve as observation uncertainties are incorporated. Abstraction and approximation techniques become the focus. This research attempts to enhance POMDPs by applying A l techniques. In particular, we transform the linear POMDP constructs into a structured representation based on binary decision trees and Bayesian Networks to achieve compactness. A handful of tree-oriented operations is then developed to perform structural belief updates and value computation. Along ii with the structured representation, we explore the belief space with a heuristic online search approach, in which best-first search strategy with heuristic pruning is employed. Experimenting with a structured testbed domain reveals great potentials of exploiting structure and heuristics to empower POMDPs for more practical applications.
On Spectral Properties of Signed Laplacians with Connections to Eventual Positivity
Creators: name: Chen, Wei
name: Wang, Dan
name: Liu, Ji
name: Chen, Yongxin
name: Khong, Sei Zhen
name: Başar, Tamer
name: Johansson, Karl H.
name: Qiu, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Signed graphs have appeared in a broad variety of applications, ranging from social networks to biological networks, from distributed control and computation to power systems. In this paper, we investigate spectral properties of signed Laplacians for undirected signed graphs. We find conditions on the negative weights under which a signed Laplacian is positive semidefinite via the Kron reduction and multiport network theory. For signed Laplacians that are indefinite, we characterize their inertias with the same framework. Furthermore, we build connections between signed Laplacians, generalized M-matrices, and eventually exponentially positive matrices.
description: online publication in IEEE Transactions on Automatic Control
title: The value of seagrass beds as nurseries in Chesapeake Bay, USA
Creators: name: Jones, Cynthia M.
Publisher: name: ASC 2013 - Theme session K
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The importance of estuarine seagrass beds as nurseries for juvenile fish has become a universal paradigm, especially for Chesapeake Bay, the third largest estuary in the world. Yet scientific tests of this hypothesis have been equivocal depending on species, location, and metrics. Moreover, seagrasses themselves are under threat and one-third of seagrasses have disappeared worldwide with 65% of their losses occurring in estuaries. Although there have been extensive studies of seagrasses in Chesapeake Bay, surprisingly few studies have quantified the relationship between seagrass as nurseries for finfish in the Bay. Of the few studies that have directly evaluated the use of seagrass nurseries, most have concentrated on single species or were of short duration. Few landscape-level or long-term studies have examined this relationship in the Bay, or explored the potential effect of climate change. This review paper summarizes seagrass habitat value as nurseries and presents recent juvenile-fish studies that address the dearth of research at the long-term and landscape-level with an emphasis on Chesapeake Bay. An important conclusion upon review of these studies is that predicting the effects of climate change on fishery production remains uncertain.
SDSS spectroscopic survey of stars
Creators: name: Ivezic, Z.
name: Schlegel, D.
name: Uomoto, A.
name: Bond, N.
name: Beers, T.
name: Prieto, C. Allende
name: Wilhelm, R.
name: Lee, Y. Sun
name: Sivarani, T.
name: Juric, M.
name: Lupton, R.
name: Rockosi, C.
name: Knapp, G.
name: Gunn, J.
name: Yanny, B.
name: Jester, S.
name: Kent, S.
name: Pier, J.
name: Munn, J.
name: Richards, G.
name: Newberg, H.
name: Blanton, M.
name: Eisenstein, D.
name: Hawley, S.
name: Anderson, S.
name: Harris, H.
name: Kiuchi, F.
name: Chen, A.
name: Bushong, J.
name: Sohi, H.
name: Haggard, D.
name: Kimball, A.
name: Barentine, J.
name: Brewington, H.
name: Harvanek, M.
name: Kleinman, S.
name: Krzesinski, J.
name: Long, D.
name: Nitta, A.
name: Snedden, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In addition to optical photometry of unprecedented quality, the Sloan Digital Sky Survey (SDSS) is also producing a massive spectroscopic database. We discuss determination of stellar parameters, such as effective temperature, gravity and metallicity from SDSS spectra, describe correlations between kinematics and metallicity, and study their variation as a function of the position in the Galaxy. We show that stellar parameter estimates by Beers et al. show a good correlation with the position of a star in the g-r vs. u-g color-color diagram, thereby demonstrating their robustness as well as a potential for photometric parameter estimation methods. Using Beers et al. parameters, we find that the metallicity distribution of the Milky Way stars at a few kpc from the galactic plane is bimodal with a local minimum at [Z/Zo]~ -1.3. The median metallicity for the low-metallicity [Z/Zo] -1.3 sample. We also find that the low-metallicity sample has ~2.5 times larger velocity dispersion and that it does not rotate (at the ~10 km/s level), while the rotational velocity of the high-metallicity sample decreases smoothly with the height above the galactic plane.
description: 8 pages, color figures, presented at the IAU Joint Discussion 13: "Exploiting Large Surveys for Galactic Astronomy", Prag, August 22-23, 2006
Science Results Enabled by SDSS Astrometric Observations
Creators: name: Ivezic, Z.
name: Bond, N.
name: Juric, M.
name: Munn, J. A.
name: Lupton, R. H.
name: Pier, J. R.
name: Hennessy, G. S.
name: Knapp, G. R.
name: Gunn, J. E.
name: Rockosi, C. M.
name: Quinn, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss several results made possible by accurate SDSS astrometric measurements in a large sky area, with emphasis on asteroids and stellar proper motions obtained by comparing POSS and SDSS. SDSS has observed over 200,000 moving objects in five photometric bands, corresponding to about two orders of magnitude increase over previous multi--color surveys. These data were used to extend the measurement of asteroid size distribution to a smaller size limit, to demonstrate that asteroid dynamical families, defined as clusters in orbital parameter space, also strongly segregate in color space, and to discover a correlation between asteroid age and colors. A preliminary analysis of SDSS-POSS proper motions for about 1 million M dwarf stars demonstrates that, in the 0.1-1 kpc distance range, the rotational velocity and its dispersion for disk stars increase with the distance from the Galactic plane.
description: 9 pages, color figures, presented at the meeting "Astrometry in the Era of the Next Generation of Large Telescopes", Flagstaff, Oct 18-20, 2004
Measuring the stellar atmosphere parameters using follow-up polarimetry microlensing observations
Creators: name: Khalouei, Elahe
name: Sajadian, Sedighe
name: Rahvar, Sohrab
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of the potential follow-up polarimetry microlensing observation to study the stellar atmospheres of the distant stars. First, we produce synthetic microlensing events using the Galactic model, stellar population, and interstellar dust toward the Galactic Bulge. We simulate the polarization microlensing light curves and pass them through the instrument specifications of FOcal Reducer and low dispersion Spectrograph (FORS2) polarimeter at Very Large Telescope (VLT), and then analyze them. We find that the accuracy of the VLT telescope lets us constrain the atmosphere of cool RGB stars. Assuming detection of about $3000$ microlensing events per year by the OGLE telescope, we expect to detect almost $20,~10,~8, $ and $5$ of polarization microlensig events for the four different criteria of being three consecutive polarimetry data points above the baseline with $1σ$, $2σ$, $3σ$, and $4σ$, respectively in the polarimetry light curves. We generalize the covariance matrix formulation and present the combination of polarimetry and photometry information that leads us to measure the scattering optical depth of the atmosphere and the inner radius of the stellar envelope of red giant stars. These two parameters could determine the dust opacity of the atmosphere of cool RGB source stars and the radius where dust can be formed.
description: 13 pages, 18 figures, accepted for publication by MNRAS
title: Nursery ground processes for junenile plaice in Icelandic waters
Creators: name: Baranowska, Elzbieta
name: Jónasson, Jónas Páll
name: Gunnarsson, Björn
name: Marteinsdóttir, Guðrún
Publisher: name: ASC 2013 - Theme session K
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Sandy shore ecosystems are essential nursery grounds for flatfish species where both the quality and quantity of habitat can control the recruitment processes. Juvenile plaice (Pleuronectes platessa) can be found in high densities on the spatially restricted sandy-bottom beaches all around Iceland. The objective was to analyse the distinctive features of a highly fertile nursery ground. The interannual variability in settlement, density and growth of juvenile plaice was examined biweekly from spring to fall at a highly fertile nursery ground (Helguvík in Álftanes) in SW-Iceland from 2005 to presence. Newly settled individuals were first observed in the end of May to early June and settlement lasted until mid-July and densities peaked in early July. The inter-annual variability in density and growth of juvenile plaice on the nursery ground and the subsequent year-class strength derived from survey of nearby important fishing ground (Faxaflói) is discussed.
Optimal display sequence for multi-clip queries
Creators: name: Shum, Paul Sik Leung
Publisher: name: University of British Columbia
Year: 2009

description: With the increased significance of multimedia applications, the performance of multimedia systems used in these applications becomes more important. This thesis investigates the possibility to improve the throughput of a system serving multi-clip queries. A multi-clip query requests multiple video clips be returned as the answer of the query. In many multimedia applications, the order in which the video clips are to be delivered does not matter that much to the user. This thesis discovers that the throughput of a system can be improved significantly for queries if the display sequence can be rearranged using the "piggybacking" technique. It describes two optimization criteria: maximizing the number of piggybacked clips and maximizing the impact on buffer space, to find an optimal display sequence. This thesis shows that the display sequences can be found using the bipartite matching. Two corresponding admission control algorithms, MaxPVC and MaxIBS, are presented. It further extends the technique to video clips of variable buffer size. Finally, it presents the MaxPP algorithm, which is used to generate display sequences for queries of variable length video clips. Experimental results show that the piggybacking technique can improve the system throughput significantly. Depending on the total number of available video clips, the throughput of the MaxPVC and MaxIBS algorithms can increase over 300%. The MaxPP algorithm can increase the throughput of the system to 30%.
Διαφήμιση στις μηχανές αναζήτησης. Σύγκρουση με το δίκαιο προστασίας των σημάτων και την Οδηγία για το ηλεκτρονικό εμπόριο.:
Creators: name: Βαντσιούρη, Ιωάννα Αθανασία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: μηχανή αναζήτησης
σήμα
φορέας παροχής υπηρεσιών διαδικτύου
keyword advertising
trademark infringement
safe harbour

description: Σκοπός της διατριβής ήταν να διερευνήσει αν η χρήση όρων πανομοιότυπων ή όμοιων με καταχωρημένα σήματα, ως λέξεων-κλειδιών που ενεργοποιούν διαδικτυακές διαφημίσεις στις ιστοσελίδες αποτελεσμάτων των διαδικτυακών μηχανών αναζήτησης παραβιάζει το ευρωπαϊκό, αλλά και το εθνικό δίκαιο σημάτων. Αφού εξετάσαμε πώς λειτουργεί η διαφήμιση στις μηχανές αναζήτησης, στη συνέχεια εξετάσαμε αν γεννάται ευθύνη, τόσο του διαφημιζόμενου, όσο και της ίδιας της μηχανής αναζήτησης σύμφωνα με την περί σημάτων νομοθεσία. Επιπλέον, μελετήσαμε την ευθύνη των μηχανών αναζήτησης ως μεσαζόντων παροχής υπηρεσιών και το «ασφαλές λιμάνι» που τους παρέχεται ως τέτοιων από την Οδηγία για το Ηλεκτρονικό Εμπόριο. Η μελέτη βασίστηκε σε σημαντικές αποφάσεις του ΔΕΕ, που πιθανότατα θα διαμορφώσουν τις μελλοντικές πρακτικές στον τομέα αυτό.
description: With this thesis we aimed to lucubrate whether keyword advertising can result to trademark infringement according to European and national law respectively. After introducing the term keyword advertising and its functions we contemplated the matter or liability of both advertisers and search engines according to trademark law. Moreover, we analyzed liability of search engines as internet intermediaries and the “safe harbor” provided to them by the e-commerce Directive. The research was based on cornerstone decisions of the CJEU, highly likely to influence future practices on this field.
GRB-triggered searches for gravitational waves in LIGO data
Creators: name: Dietz, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The LIGO gravitational wave detectors have recently reached their design sensitivity and finished a two-year science run. During this period one year of data with unprecedented sensitivity has been collected. I will briefly describe the status of the LIGO detectors and the overall quality of the most recent science run. I also will present results of a search for inspiral waveforms in gravitational wave data coincident with the short gamma ray burst detected on 1st February 2007, with its sky location error box overlapping a spiral arms of M31. No gravitational wave signals were detected and a binary merger in M31 can be excluded at the 99% confidence level.
description: 5 pages, 3 figures, contributed talk, submitted to the proceedings of Gamma Ray Bursts 2007, Santa Fe, New Mexico, November 5-9 2007