cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Marine deep seismic sounding off the Coast of British Columbia
Creators: name: Knize, Stanislav
Publisher: name: University of British Columbia
Year: 2010

description: A marine seismic system for recording near-vertical incidence to wide-angle reflected waves and refracted waves with penetration to the bottom of the crust (deep seismic sounding or DSS) has been developed. In a two ship-operation, signals from six individual hydrophones are recorded in digital form on the receiving ship. To provide origin times and facilitate subsequent processing, signals from a single hydrophone are recorded in FM mode on the shooting ship. During 1973, DSS profiles about 20km in length were recorded in three regions off the west coast of Canada: the Hudson '70 survey area, west of the Queen Charlotte Islands near 51°N, 133°W; off Queen Charlotte Sound; and in Cascadia Basin west of central Vancouver Island. The recorded data were processed with various digital techniques such as autopower spectrum analysis, band-pass filtering, deconvolution, velocity spectrum analysis, and stacking. After compilation in record sections, the data were interpreted in terms of velocity-versus-depth models of the oceanic crust. Two kinds of models were derived for the refraction data, models are based on a traveltime and amplitude interpretation made by comparing the observed data with synthetic seismograms. For the reflection data, the models are based on a T²-X² analysis of seismic phases. The crustal models derived from the two approaches indicate the same basic crustal layers, but the reflection models show detailed velocity changes within these layers. The models show the complexity of the structure of the oceanic crust and relate to regional geology. The crustal model of the Hudson '70 area shows thin sediments over the basement which consists of either two layers or a layer with a velocity gradient. The model compares well with the results obtained in the same area by Keen and Barrett (1971). The model for the region off Queen Charlotte Sound indicates six sedimentary layers of different velocities, basement at a depth of 2.4 km sub-bottom, and the oceanic layer at a depth of 4.5 km sub-bottom. Velocity reversals within the sediments possibly show the influence of Pleistocene glaciation on the deposition of sediments underneath the continental slope. The model for northern Cascadia Basin shows four layers within the sediments of thickness 1.9 km, a velocity transition between the sediments and the basement, the basement at a depth of 2.7 km sub-bottom, and the oceanic layer at a depth of 4.2 km sub-bottom. Proposed interbedding of volcanic material with high velocity sediments at the top of the basement correlates with geological formative processes observed at the crest of the near-by Juan de Fuca Ridge. The results have shown that the marine DSS system is an efficient technigue for detailed investigation of the oceanic crust and is an inexpensive alternative to the multichannel common depth point techniques used in the oil industry.
MPEC 2024-S163 : 2024 SP4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SP4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Lateral Distribution of the Radio Signal in Extensive Air Showers Measured with LOPES
Creators: name: LOPES Collaboration
name: Apel, W. D.
name: Arteaga, J. C.
name: Asch, T.
name: Badea, A. F.
name: Baehren, L.
name: Bekk, K.
name: Bertaina, M.
name: Biermann, P. L.
name: Bluemer, J.
name: Bozdog, H.
name: Brancus, I. M.
name: Brueggemann, M.
name: Buchholz, P.
name: Buitink, S.
name: Cantoni, E.
name: Chiavassa, A.
name: Cossavella, F.
name: Daumiller, K.
name: de Souza, V.
name: Di Pierro, F.
name: Doll, P.
name: Engel, R.
name: Falcke, H.
name: Finger, M.
name: Fuhrmann, D.
name: Gemmeke, H.
name: Ghia, P. L.
name: Glasstetter, R.
name: Grupen, C.
name: Haungs, A.
name: Heck, D.
name: Hoerandel, J. R.
name: Horneffer, A.
name: Huege, T.
name: Isar, P. G.
name: Kampert, K. H.
name: Kang, D.
name: Kickelbick, D.
name: Kroemer, O.
name: Kuijpers, J.
name: Lafebre, S.
name: Luczak, P.
name: Ludwig, M.
name: Mathes, H. J.
name: Mayer, H. J.
name: Melissas, M.
name: Mitrica, B.
name: Morello, C.
name: Navarra, G.
name: Nehls, S.
name: Nigl, A.
name: Oehlschlaeger, J.
name: Over, S.
name: Palmieri, N.
name: Petcu, M.
name: Pierog, T.
name: Rautenberg, J.
name: Rebel, H.
name: Roth, M.
name: Saftoiu, A.
name: Schieler, H.
name: Schmidt, A.
name: Schroeder, F.
name: Sima, O.
name: Singh, K.
name: Toma, G.
name: Trinchero, G. C.
name: Ulrich, H.
name: Weindl, A.
name: Wochele, J.
name: Wommer, M.
name: Zabierowski, J.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The antenna array LOPES is set up at the location of the KASCADE-Grande extensive air shower experiment in Karlsruhe, Germany and aims to measure and investigate radio pulses from Extensive Air Showers. The coincident measurements allow us to reconstruct the electric field strength at observation level in dependence of general EAS parameters. In the present work, the lateral distribution of the radio signal in air showers is studied in detail. It is found that the lateral distributions of the electric field strengths in individual EAS can be described by an exponential function. For about 20% of the events a flattening towards the shower axis is observed, preferentially for showers with large inclination angle. The estimated scale parameters R0 describing the slope of the lateral profiles range between 100 and 200 m. No evidence for a direct correlation of R0 with shower parameters like azimuth angle, geomagnetic angle, or primary energy can be found. This indicates that the lateral profile is an intrinsic property of the radio emission during the shower development which makes the radio detection technique suitable for large scale applications.
description: accepted by Astroparticle Physics
การประเมินผลและปัจจัยที่ส่งผลต่อการรักษาผู้ป่วยกล้ามเนื้อหัวใจตายเฉียบพลันชนิด STEMI ด้วยยา STREPTOKINASE ในโรงพยาบาลมะการักษ์ EVALUATION AND FACTORS INFLUENCING ON TREATMENT OUTCOMES OF ST-ELEVATED MYOCARDIAL INFARCTION (STEMI) PATIENTS RECEIVING STREPTOKINASE IN MAKARAK HOSPITAL
Creators: name: ญาณิศา นาคถั่ว
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/โรงพิมพ์ ม.ศิลปากร
Year: 2014
Subjects: กล้ามเนื้อหัวใจตายเฉียบพลัน, สเตรปโตไคเนส, การเปิดหลอดเลือดหัวใจ,acute myocardial infarction, streptokinase, reperfusion

description: 1 (Jan-June 2014 ), 9, ไทยไภษัชยนิพนธ์ Thai Bulletin of Pharmaceutical Science (TBPS)
Sub-wavelength image manipulating through compensated anisotropic metamaterial prisms
Creators: name: Zhao, Junming
name: Feng, Yijun
name: Zhu, Bo
name: Jiang, Tian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Based on the concept of sub-wavelength imaging through compensated bilayer of anisotropic metamaterials (AMMs), which is an expansion of the perfect lens configuration, we propose two dimensional prism pair structures of compensated AMMs that are capable of manipulating two dimensional sub-wavelength images. We demonstrate that through properly designed symmetric and asymmetric compensated prism pair structures planar image rotation with arbitrary angle, lateral image shift, as well as image magnification could be achieved with sub-wavelength resolution. Both theoretical analysis and full wave electromagnetic simulations have been employed to verify the properties of the proposed prism structures. Utilizing the proposed AMM prisms, flat optical image of objects with sub-wavelength features can be projected and magnified to wavelength scale allowing for further optical processing of the image by conventional optics.
description: 10 pages, 7 figures
You Can Go Your Own Way: Exploring the professional characteristics of modern day further education teachers
Creators: name: Author, Unknown
Publisher: name: University of Lincoln
Year: 2023

description: The central aim of this research was to determine if Further Education (FE) teaching could be classed as a profession and how this impacted on FE teachers’ professional identities. This research explored the concept of teacher professionalism and professional identities within the FE sector. It examined the relationship between normative accounts of professionalism and FE teachers’ professional identities, and investigated where FE teachers’ professional standing positioned itself within the education sector. Previous research indicated that accounts of FE teacher professionalism were tenuous, and not fully engaged with by the individuals at which they were aimed. Another contention was whether within the literature FE teaching could be considered a profession in its own right when compared to traditional indicators of a profession from prominent authors in the subject area. These ‘issues’ provided a tangible link to Foucault’s work on ‘problematisation’ which was utilised as a tool to facilitate strong discussion within the research. The qualitative research approach, grounded in an interpretive paradigm, involved a single representational case study which was an FE provider situated in the north of England. Methods used to collect data were a pilot questionnaire, exploratory questionnaire, two focus groups, and unstructured interviews. Additionally, document analysis was undertaken on policy and regulations relating to teacher professionalism ranging from 1960 to 2014, alongside key literature on models of professionalism; this was to provide a through contextual background of the vast and successive changes within the sector which occurred over a relatively short time period. FE teachers’ personal narratives were thematically analysed and showed strong associations with issues on the distribution of power, and the complexities of professional identities within FE which were similarly reflected in the literature. The findings suggested that FE teachers were unclear about their professional identities and were adopting a ‘pick and mix’ approach to their professionalism, utilising normative accounts of professionalism from other sectors and professions to support their ideas. FE teachers demonstrated that their professional identities are fragmented and complex which impacts on their acceptance and recognition as professionals in their own right. Furthermore, their work appeared to be more aligned with being recognised as an occupation, which tries to act professionally, rather than a profession in its own right.
Cosmic Neutrino Last Scattering Surface
Creators: name: Dodelson, Scott
name: Vesterinen, Mika
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Neutrinos decoupled from the rest of the cosmic plasma when the Universe was less than one second old, far earlier than the photons which decoupled at t=380,000 years. Surprisingly, though, the last scattering surface of the neutrinos is much closer to us than that of the photons. Here we calculate the properties of the last scattering surfaces of the three species of neutrinos.
description: Important reference to earlier work of Bisnovatyi-Kogan and Seidov added, and mis-spelling of Opher reference corrected
Langevin Thermostat for Rigid Body Dynamics
Creators: name: Davidchack, Ruslan L.
name: Handel, Richard
name: Tretyakov, M. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present a new method for isothermal rigid body simulations using the quaternion representation and Langevin dynamics. It can be combined with the traditional Langevin or gradient (Brownian) dynamics for the translational degrees of freedom to correctly sample the NVT distribution in a simulation of rigid molecules. We propose simple, quasi-symplectic second-order numerical integrators and test their performance on the TIP4P model of water. We also investigate the optimal choice of thermostat parameters.
description: 15 pages, 13 figures, 1 table
The unusually weak and exceptionally steep radio relic in Abell 2108
Creators: name: Schellenberger, Gerrit
name: Giacintucci, Simona
name: Lovisari, Lorenzo
name: O'Sullivan, Ewan
name: Vrtilek, Jan
name: David, Laurence P.
name: Melin, Jean-Baptiste
name: Lal, Dharam Vir
name: Ettori, Stefano
name: Kolokythas, Konstantinos
name: Sereno, Mauro
name: Raychaudhury, Somak
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Mergers between galaxy clusters often drive shocks into the intra cluster medium (ICM), the effects of which are sometimes visible via temperature and density jumps in the X-ray, and via radio emission from relativistic particles energized by the shock's passage. Abell2108 was selected as a likely merger system through comparing the X-ray luminosity to the Planck Sunyaev-Zeldovich signal, where this cluster appeared highly X-ray underluminous. Follow up observations confirmed it to be a merging low mass cluster featuring two distinct subclusters, both with a highly disturbed X-ray morphology. Giant Metrewave Radio Telescope (GMRT) data covering 120-750MHz show an extended radio feature resembling a radio relic, near the location of a temperature discontinuity in the X-rays. We measure a Mach number from the X-ray temperature jump. Several characteristics of radio relics are found in Abell2108, making this cluster one of the few low mass mergers likely hosting a radio relic. The radio spectrum is exceptionally steep, and the radio power is very weak (P1.4GHz=1E22W/Hz). To account for the shock/relic offset, we propose a scenario in which the shock created the relic by re-accelerating a cloud of pre-existing relativistic electrons and then moved away, leaving behind a fading relic. The electron aging timescale derived from the high-frequency steepening in the relic spectrum is consistent with the shock travel time to the observed X-ray discontinuity. However, the lower flux in GMRT band 4 data causing the steepening could be due to instrumental limitations, and deeper radio data are needed to constrain the spectral slope of the relic at high frequencies.
description: accepted for publication in ApJ; 15 pages, 6 figures
Marginalization, Morbidity and Mortality:
A Case Study of Myanmar Migrants in Ranong Province, Thailand
Creators: name: Nucharee Srivirojana, Sureeporn Punpuing
Publisher: name: Institute for Population and Social Research
Year: 2014
Subjects: Marginalization, mortality, migrant, Burmese, Thailand, Myanmar

description: 1, Volume 22, Journal of Population and Social Studies
Teachers’ stories: ‘Living out’ a principled pedagogy
Creators: name: Author, Unknown
Publisher: name: University of Lincoln
Year: 2023

description: Based upon primary school teachers’ reflective narratives, the researcher argues that teachers’ agency is understood as ‘living out’ their educational beliefs and values, referred to as their philosophy of education, and demonstrated through their pedagogy, within the social and cultural discursive structures of educational reform and change (Archer, 2003, 267). Ontologically rooted in a critical realist view of reality that is stratified and emergent, the case is made through Archer’s morphogenetic model for the interplay between two different causal powers namely those pertaining to agents and those to structures. The interplay between the two forms the problematic for the study, a position that places neither the objectivity of structures over the subjectivity of agents or vice versa but recognises that what teachers do to fulfil their philosophy of education and related pedagogic intentions involves the subjective and reflexive formulation of their intentions in respect of their objective circumstances. Overall it is argued that the mediatory reflections of teachers for revealing the structure agency interplay and their resulting actions in their school contexts hold a crucially political dimension. The assumption being based on perceived differences between teachers’ deeply held values and beliefs about their pedagogy and how they see themselves as teachers within imposed normative value judgements of reform agendas. How they accept, embrace, circumnavigate or reject educational change and reform, whether they feel they have succeeded or failed and however small their adjustments to pedagogy might be provides valuable insights about primary school teachers’ professional lives and their pedagogy that serve as a source of knowledge for the profession.
COLESEVELAM สำหรับใช้ในการรักษาโรคเบาหวานชนิดที่ 2 COLESEVELAM FOR THE TREATMENT OF TYPE 2 DIABETES MELLITUS
Creators: name: กมลนันท์ โฆษิตชัยมงคล, ขนิษฐา ฉัตรวิเชียร และ นันทลักษณ์ สถาพรนานนท์
Publisher: name: คณะเภสัชศาสตร์/โรงพิมพ์ ม.ศิลปากร
Year: 2014
Subjects: colesevelam,ยาช่วยขจัดกรดน้ำดี,ยารักษาเบาหวาน,โรคเบาหวานชนิดที่ 2 colesevelam, bile acid sequestrants, type 2 diabetes mellitus,T2DM

description: 1 (Jan-June 2014 ), 9, ไทยไภษัชยนิพนธ์ Thai Bulletin of Pharmaceutical Science (TBPS)
Radio-frequency reflectometry on large gated 2-dimensional systems
Creators: name: Taskinen, L. J.
name: Starrett, R. P.
name: Martin, T. P.
name: Micolich, A. P.
name: Hamilton, A. R.
name: Simmons, M. Y.
name: Ritchie, D. A.
name: Pepper, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have embedded an AlGaAs/GaAs based, gated 2D hole system (2DHS) into an impedance transformer $LC$ circuit, and show that by using radio-frequency reflectometry it is possible to perform sensitive, large bandwidth, electrical resistance measurements of 2D systems at mK temperatures. We construct a simple lumped element model where the gated 2DHS is described as a resistive transmission line. The model gives a qualitative understanding of the experimental results. As an example, we use our method to map out the Landau level evolution in a 2DHS as a function of magnetic field and gate voltage.
description: 8 pages, 8 figures. Accepted for publication in Review of Scientific Instruments
Обстеження поселення в урочищі Залізьки 2
Creators: name: Марченко, Олександр
name: Syvolap, Mykhaylo
name: Деткін, Антон
name: Прядко, Олександр
name: Борисов, Артем
Publisher: name: figshare
Year: 2023
Subjects: Archaeology not elsewhere classified

description: Марченко О., Сиволап М., Прядко О., Деткін А., Борисов А. Обстеження поселення в урочищі Залізьки 2. Археологічні дослідження в Україні 2018. Київ, 2020. - с.240
Electron dynamics in a 2D nanobubble: A two-level system based on spatial density
Creators: name: Rosati, Roberto
name: Lengers, Frank
name: Carmesin, Christian
name: Florian, Matthias
name: Kuhn, Tilmann
name: Jahnke, Frank
name: Lorke, Michael
name: Reiter, Doris E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nanobubbles formed in monolayers of transition metal dichalcogenides (TMDCs) on top of a substrate feature localized potentials, in which electrons can be captured. We show that the captured electronic density can exhibit a non-trivial spatiotemporal dynamics, whose movements can be mapped to states in a two-level system illustrated as points of an electronic Poincaré sphere. These states can be fully controlled, i.e, initialized and switched, by multiple electronic wave packets. Our results could be the foundation for novel implementations of quantum circuits.
description: This document is the Author's version of a Work that was accepted for publication in Nano Letters, copyright American Chemical Society after peer review
Light-Front Quantization Approach to the Gauge-Gravity Correspondence and Hadron Spectroscopy
Creators: name: de Teramond, Guy F.
name: Brodsky, Stanley J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find a correspondence between semiclassical QCD quantized on the light-front and a dual gravity model in anti--de Sitter (AdS) space, thus providing an initial approximation to QCD in its strongly coupled regime. This correspondence -- light-front holography -- leads to a light-front Hamiltonian and relativistic bound-state wave equations that are functions of an invariant impact variable $ζ$ which measures the separation of the quark and gluonic constituents within hadrons at equal light-front time. The eigenvalues of the resulting light-front Schrödinger and Dirac equations are consistent with the observed light meson and baryon spectrum, and the eigenmodes provide the light-front wavefunctions, the probability amplitudes describing the dynamics of the hadronic constituents. The light-front equations of motion, which are dual to an effective classical gravity theory, possess remarkable algebraic and integrability properties which are dictated by the underlying conformal properties of the theory. We extend the algebraic construction to include a confining potential while preserving the integrability of the mesonic and baryonic bound-state equations.
description: 17 pages, 2 figures, Invited talk presented at Hadron 2009, The International Conference on Hadron Spectroscopy, Florida State University, Tallahassee, November 29 - December 4, 2009
Study of Distribution and Asymmetry of Solar Active Prominences During Solar Cycle 23
Creators: name: Joshi, Navin Chandra
name: Bankoti, Neeraj Singh
name: Pande, Seema
name: Pande, Bimal
name: Pandey, Kavita
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper we present the results of a study of the spatial distribution and asymmetry of solar active prominences (SAP) for the period 1996-2007 (solar cycle 23). For more meaningful statistical analysis we have analysed the distribution and asymmetry of SAP in two subdivisions viz. Group1 (ADF, APR, DSF, CRN, CAP) and Group2 (AFS, ASR, BSD, BSL, DSD, SPY, LPS). The north-south (N-S) latitudinal distribution shows that the SAP events are most prolific in the 21-30degree slice in the northern and southern hemispheres and east-west (E-W) longitudinal distribution study shows that the SAP events are most prolific (best visible) in the 81-90degree slice in the eastern and western hemispheres. It has been found that the SAP activity during this cycle is low compared to previous solar cycles. The present study indicates that during the rising phase of the cycle the number of SAP events were roughly equal on the north and south hemispheres. However, activity on the southern hemisphere has been dominant since 1999. Our statistical study shows that the N-S asymmetry is more significant then the E-W asymmetry.
description: 21 pages 5 figures; Published online; 02 October, 2009; Solar Physics Journal
Triggering phase-coherent spin packets by pulsed electrical spin injection across an Fe/GaAs Schottky barrier
Creators: name: Schreiber, L. R.
name: Schwark, C.
name: Güntherodt, G.
name: Lepsa, M.
name: Adelmann, C.
name: Palmstrøm, C. J.
name: Lou, X.
name: Crowell, P. A.
name: Beschoten, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The precise control of spins in semiconductor spintronic devices requires electrical means for generating spin packets with a well-defined initial phase. We demonstrate a pulsed electrical scheme that triggers the spin ensemble phase in a similar way as circularly-polarized optical pulses are generating phase coherent spin packets. Here, we use fast current pulses to initialize phase coherent spin packets, which are injected across an Fe/GaAs Schottky barrier into $n$-GaAs. By means of time-resolved Faraday rotation, we demonstrate phase coherence by the observation of multiple Larmor precession cycles for current pulse widths down to 500 ps at 17 K. We show that the current pulses are broadened by the charging and discharging time of the Schottky barrier. At high frequencies, the observable spin coherence is limited only by the finite band width of the current pulses, which is on the order of 2 GHz. These results therefore demonstrate that all-electrical injection and phase control of electron spin packets at microwave frequencies is possible in metallic-ferromagnet/semiconductor heterostructures.
description: 14 pages, 9 figures
Geometric versus spectral convergence for the Neumann Laplacian under exterior perturbations of the domain
Creators: name: Arrieta, Jose M.
name: Krejcirik, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We analyze the behavior of the eigenvalues and eigenfunctions of the Laplace operator with homogeneous Neumann boundary conditions when the domain is perturbed. We focus on exterior perturbations of the domain, that is, the limit domain is contained in each of the perturbed domains. Moreover, the family of perturbed domains is made up of bounded domains although not necessarily uniformly bounded. We show that if we know that the eigenvalues and eigenfunctions of the perturbed domains converge to the ones of the limit domain, then necessarily we have that the measure of the perturbation tends to zero, while it is not necessarily true for the Hausdorff distance of the perturbation. As a matter of fact we will construct an example of a perturbation where the spectra behave continuously but the distance tends to infinity.
description: 11 pages, LaTeX with 1 EPS figure
Representation dimension of $m$-replicated algebras
Creators: name: Lv, Hongbo
name: Zhang, Shunhua
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16E10, 16G10

description: Let $A$ be a finite dimensional hereditary algebra over an algebraically closed field and $A^{(m)}$ the $m$-replicated algebra of $A$. We prove that the representation dimension of $A^{(m)}$ is at most three, and that the dominant dimension of $A^{(m)}$ is at least $m$.
description: 13 pages
The AGN properties of the starburst galaxy NGC 7582
Creators: name: Ricci, T. V.
name: Steiner, J. E.
name: Menezes, R. B.
name: Garcia-Rissmann, A.
name: Fernandes, R. Cid
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: NGC 7582 was identified as a Starburst galaxy in the optical \cite[(Veron et al. 1981)]{Veron et al.(1981)} but its X-Ray emission is typical of a Seyfert 1 galaxy \cite[(Ward et al. 1978)]{Ward et al.(1978)}. We analyzed a datacube of this object obtained with the GMOS-IFU on the Gemini-South telescope. After a subtraction of the stellar component using the {\sc starlight} code \cite[(Cid Fernandes et al. 2005)]{Cid Fernandes et al. (2005)}, we looked for optical signatures of the AGN. We detected a broad $Hα$ component (figure \ref{fig1}) in the source where \cite[Bianchi et al.(2007)]{Bianchi et al.(2007)} identified the AGN in an HST optical image. We also found a broad $Hβ$ feature (figure \ref{fig2}), but its emission reveals a extended source. We suggest that it is the light of the AGN scattered in the ionization cone. We propose that NGC 7582 is a Seyfert 1 galaxy. A number of other "hot-spots" and Wolf-Rayet features were also identified.
description: 1 page, 2 figures, to be published in the Proceedings of the IAU Symposium no. 267
Model for frustrated spin-orbital chains: application to CaV2O4
Creators: name: Chern, Gia-Wei
name: Perkins, Natalia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Motivated by recent interest in quasi-one-dimensional compound CaV2O4, we study the ground states of a spin-orbital chain characterized by an Ising-like orbital Hamiltonian and frustrated interactions between S=1 spins. The on-site spin-orbit interaction and Jahn-Teller effect compete with inter-site superexchange leading to a rich phase diagram in which an antiferro-orbital phase is separated from the orbital paramagnet by a continuous Ising transition. Two distinct spin liquids depending on the underlying orbital order are found in the limit of small spin-orbit coupling. In the opposite limit, the zigzag chain behaves as a spin-2 chain with Ising anisotropy. The implications for CaV2O4 are discussed.
description: 5 pages, revised discussion of spin-liquid phases
Aquaponics dietary quality as a response to variable BSFL lipid and mineral dietary inclusion as fish meal replacement.
Creators: name: Abebe Tadesse
Publisher: name: Zenodo
Year: 2023
Subjects: Black soldier fly larvae, Nile tilapia, Aquaponics, Spinach

description: Climate smart Aquaponics project sponsored by NWO the Netherlands and conducted in Ethiopia. This poster dictates the Nutritional profile of aquaponics dietary ingredients and formulated experimental diets.
Neighbourhood Policing: Community, confidence and legitimacy in a London borough
Creators: name: OReilly, Carina
Publisher: name: University of Lincoln
Year: 2023
Subjects: L400 - Social policy

description: This thesis examines how confidence and legitimacy are maintained through the processes of neighbourhood policing; an area particularly important for the legitimation of the police, but which has come under severe pressure from austerity-driven budget cuts. These pressures have been accompanied by a shift away from community-driven police priorities and towards concerns for risk, vulnerability and ‘hidden harms.’ Together, these changes could have serious consequences for police legitimacy.This study, for which fieldwork was undertaken between June 2016 and September 2017, looks at neighbourhood policing in a single London borough. It was undertaken as an embedded case study, enabling comparisons between wards. Interviews were carried out with neighbourhood police officers, ward panel members, council officers and local councillors, as well as senior police officers. These were supplemented with observations of panel and public meetings.The study found that the mechanisms by which neighbourhood policing were originally intended to deliver confidence were still valued. However, they required face-to-face engagement with the public, and so were particularly susceptible to resource limitations. The London system of ward panels could support neighbourhood policing in unexpected (although not entirely unproblematic) ways. However, the study also found that resident priorities and values were highly variable, and often differed from police priorities, and that these disagreements could also be exacerbated by resource constraints.The research concludes that legitimacy and confidence are locally and situationally contingent, as are ideas of ‘fairness’ and other values. This means that maintaining confidence and legitimacy in a complex modern society needs a model of policing that includes processes to determine what residents value. Such a model must also include a community-driven element; it is not sufficient to decide what it is that policing should achieve and then hope that confidence and legitimacy will follow. This has important consequences for the way that neighbourhood policing is conceptualised, organised, and supported.
Long-term operational management for fatigue and revenue objectives using flexible control and optimization
Creators: name: Pettas, Vasilis
name: Cheng, Po Wen
Publisher: name: Zenodo
Year: 2023

description: As the need for the energy transition becomes more urgent wind energy is required to play a pivotal role. Wind energy has to become more flexible in terms of power production to support the grid further, the wind operators will operate outside of subsidy schemes and the total cost of energy has to be reduced while maintaining profitability for the operators. To address these challenges, we recommend a flexible turbine operation where the operational mode of the turbine will be assigned hourly considering wind conditions, electricity prices and long-term objectives. Using this approach, the assets can provide more energy when the prices are higher (day ahead, intraday or secondary electricity markets) or the grid is demanding it and accordingly reduce production or shut down when the need for energy (and subsequently prices) are low to preserve the fatigue damage. This can be applied for various objectives, for instance increasing the revenue in a damage-neutral manner, increasing the damage margin that can be used for lifetime extension while keeping the revenue, maximizing the revenue for a given fatigue damage budget, etc. In the presentation, we show an overview of the methodology which includes: Turbine controller tuning to allow different levels of power output between 50 and 130% of the nominal value and an additional individual blade pitch control (IBC) loop. The surrogate modelling approach using Gaussian process regression for the turbine response for all controller modes and external conditions. The optimization framework, acting as a digital twin accumulating the damage and revenue over time and assigning set points over time based on a long-term optimization objective. For the example scenario results, we use the DTU 10MW turbine (simulated using FAST) and several years of hourly prices and wind conditions from the German electricity market. The baseline operation results are compared to the optimized operation evaluating the accumulated revenue and fatigue damage of the main components (tower, blades, nacelle) for different scenarios.
Steeped in Place: Encountering Scotland in Paintings of the Sea.
Creators: name: Boyd, Joseph
Publisher: name: University of Lincoln
Year: 2023
Subjects: V350 - History of art
W100 - Fine art
W900 - Others in creative arts & design

description: Art is analysed and understood most often in terms of who (the artist was) and when (the work was created). Where (the creative act occurred) is seldom considered as significant. However, human understanding of the world depends on spatiality as well as temporality. This thesis investigates spatiality in paintings of Scotland’s sea and coast.The purpose of the research was threefold: firstly, to develop a conceptual framework of spatiality that could describe any painting; secondly to develop a suite of methods that situated painter, painting and geography; thirdly to apply the framework and methodology to the Scottish paintings of one artist, American Jon Schueler. Three spatial concepts for analysing the Scottishness of paintings of the sea were characterised: space, place and scape. Interviews with six contemporary painters revealed geography’s phenomenological underpinning.With paintings by Joan Eardley and William McTaggart, methods were developed to situate any artwork. These included well-proven visual analysis techniques, augmented by an original programme that extracted a colour palette from the painting’s image. With works by Janette Kerr and Will Maclean, methods were established to situate the artist. These included identifying which facets of place were incorporated into each painting, and how the artist’s discourse revealed a spatial understanding. Finally, McTaggart paintings were explored to situate their geography. This included using site visits to interpret a painting and compiling deep maps to compare and contrast the spatiality of paintings of Eastern Carnoustie with Western Machrihanish.The concepts and methodology were then employed to scrutinise the complete inventory of Jon Schueler’s extant works. By situating paintings, artist and the geography of Mallaig using the developed methodology, Schueler was demonstrated to be strongly influenced by spatiality. The unique configuration of a Scottish place illuminated and clarified what he perceived in nature and how he responded to it. The case study suggested that with a sense of place, a painting of the sea provides an encounter with Scotland.
พฤติกรรมการใช้สารสนเทศของนิสิตปริญญาตรี มหาวิทยาลัยศรีนครินทรวิโรฒ
Creators: name: โชติมา วัฒนะ
Publisher: name: Srinakharinwirot University
Year: 2563
Subjects: Information use, Undergraduate student

description: Journal of Library and Information Science Srinakharinwirot University, 13, 2, 1-11.
Scattering from finite size methods in lattice QCD
Creators: name: Feng, Xu
name: Jansen, Karl
name: Renner, Dru B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using two flavors of maximally twisted mass fermions, we calculate the S-wave pion-pion scattering length in the isospin I=2 channel and the P-wave pion-pion scattering phase in the isospin I=1 channel. In the former channel, the lattice calculations are performed at pion masses ranging from 270 MeV to 485 MeV. We use chiral perturbation theory at next-to-leading order to extrapolate our results. At the physical pion mass, we find m_pi a_pipi(I=2)=-0.04385(28)(38) for the scattering length. In the latter channel, the calculation is currently performed at a single pion mass of 391 MeV. Making use of finite size methods, we evaluate the scattering phase in both the center of mass frame and the moving frame. The effective range formula is employed to fit our results, from which the rho resonance mass and decay width are evaluated.
description: 7 pages, 6 figures, a talk presented at The XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking University, Beijing, China
ความสัมพันธ์ระหว่างการเปิดเผยข้อมูลรายงานความยั่งยืนกับผลการดำเนินงานของบริษัทในกลุ่ม ESG100
Creators: name: นิตยา โยธาจันทร์
Publisher: name: Srinakharinwirot University
Year: 2563
Subjects: Sustainability Reports, GRI, Operating Performance

description: Journal of Library and Information Science Srinakharinwirot University, 13, 2, 12-26.
Small-scale magnetic flux ropes and their properties based on in-situ measurements from Parker Solar Probe
Creators: name: Chen, Yu
name: Hu, Qiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report small-scale magnetic flux ropes via the Parker Solar Probe in situ measurements during the first six encounters and present additional analyses to supplement our prior work in Chen et al. 2021. These flux ropes are detected by the Grad-Shafranov-based algorithm with the duration and scale size ranging from 10 seconds to $\lesssim$1 hour and from a few hundred kilometers to 10$^{-3}$ au, respectively. They include both static structures and those with significant field-aligned plasma flows. Most structures tend to possess large cross helicity, while the residual energy distributes in wide ranges. We find that these dynamic flux ropes mostly propagate anti-sunward, with no preferential sign of magnetic helicity. The magnetic flux function follows a power law and is proportional to scale size. We also present case studies showing reconstructed two-dimensional (2D) configurations, which confirm that the static and dynamic flux ropes have the common configuration of spiral magnetic field lines (also streamlines). Moreover, the existence of such events hints at the interchange reconnection as a possible mechanism to generate flux rope-like structures near the Sun. Lastly, we summarize the major findings and discuss the possible correlation between these flux rope-like structures and turbulence due to the process of local Alfvenic alignment.
description: Accepted by ApJ on Oct 26 2021
Imaging biomarkers for risk stratification in colorectal and anal cancer
Creators: name: Wale, Anita
Publisher: name: Imperial College London
Year: 2019

description: Introduction: “Imaging biomarkers” (IB) are radiological measurements that predict outcomes. Although IBs have been validated for primary colorectal cancer none are available for predicting disease relapse in colorectal or anal cancer. The aim of this thesis was to develop and implement IBs for relapse in colorectal and anal cancer. Methods: A systematic review assessed the completeness of reporting of IB publications in colorectal liver metastases. Potential IBs for anal SCC and mrTRG response assessment in rectal cancer were tested retrospectively. Finally IB implementation was tested by retrospectively and then prospectively assessing the potential role of DW-MRI as a screening tool for synchronous liver metastases in colorectal cancer. Results: Systematic review (n=30) found no IB studies adhered to REMARK but there were areas of good practice. mrT staging and mr-derived depth of extramural spread (DEMS) both predicted for outcome in 131 anal SCC patients, but when combined DEMS >12mm was the only predictor of outcome. mrTRG response in 338 patients predicted for recurrent or metastatic disease (OR 3.6) and described patterns of disease. Retrospectively DW-MRI detected more synchronous liver metastases in high-risk rectal cancer than CT (OR 8.065, P=0.018) with poorer 3 year OS (p<0.05). This led to the multicentre SERENADE study which aimed to validate screening DW-MRI in 262 patients; interim analysis showed DW-MRI detected 5% more synchronous liver metastases than CT. Conclusions and Future Work: REMARK should be required by journals publishing IB work. DEMS is a novel potential IB for anal SCC which could result in a change to TNM staging but first requires external validation against outcomes. Findings related to mrTRG and the timing and site of metastases should be considered when planning follow-up. Risk-adapted screening for liver metastases with DW-MRI has been validated and should be adopted in clinical practice for high-risk patients.
‘The men they become’ - Northern Nigeria’s Former Almajirai: Analysing Representational Discourses of Identity, Knowledge and Education
Creators: name: Abdulrahman, Hadiza Kere
Publisher: name: University of Lincoln
Year: 2023
Subjects: V500 - Philosophy
X900 - Others in education

description: Almajiranci, a historical Islamic-based system of education in Northern Nigeria has recently been the subject of much controversy and misrepresentation in Nigeria. There are an estimated 7-9 million students currently within the system and there have been numerous, though often unsuccessful attempts to modernise it. The system, its students (almajirai) and graduates have been linked, with little, if any, evidential basis to religious uprisings, political unrest and non-state terrorist organisations such as Boko Haram. These associations raise some profound questions about Nigerian society’s attitude to other forms of education. The research takes an original approach to understanding Almajiranci by presenting it as a meaning-making practice and studying it through extensive interviews with ten former almajirai. It uses their stories as alternative narratives which disclose the incomplete nature of the existing negative mainstream discourses. This phenomenological ethnography uses postcolonial and discursive lenses to uncover a complex interplay of knowledge, power, ‘modernity’ and epistemological prejudice in the construction of Almajiranci, with particular reference to the delegitimisation of this ‘Other’ way of knowing within the postcolonial Nigerian society. The primary findings are first, that the identities of the former almajirai have been misrepresented by the discourses and they are not the ones that the almajirai create and utilise for themselves; second, that many former almajirai place great value on the form of education they experienced. Graduates of this system tacitly subscribe to an “Almajiri Character Framework” as a code of conduct and the system is also fundamentally relational, with the Malam being at the centre of this relationship. Essentially the Almajiranci system is much more nuanced and complex than is suggested by the mainstream representations. These misrepresentations call into question what is regarded as knowledge and the role and use of education, especially its function in the creation and contestation of identities, while focusing on debates about the meanings of education in general. The study therefore has real significance for the ways that the postcolonial Nigerian society engages with Almajiranci beyond the existing negative discourses. It also has relevance more widely for the broader issues of identity, education, power and ‘modernity
Models of Jupiter's Growth Incorporating Thermal and Hydrodynamic Constraints
Creators: name: Lissauer, Jack J.
name: Hubickyj, Olenka
name: D'Angelo, Gennaro
name: Bodenheimer, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [Abridged] We model the growth of Jupiter via core nucleated accretion, applying constraints from hydrodynamical processes that result from the disk-planet interaction. We compute the planet's internal structure using a Henyey-type stellar evolution code. The planet's interactions with the protoplanetary disk are calculated using 3-D hydrodynamic simulations. Previous models of Jupiter's growth have taken the radius of the planet to be approximately one Hill sphere radius, Rhill. However, 3-D hydrodynamic simulations show that only gas within 0.25Rhill remains bound to the planet, with the more distant gas eventually participating in the shear flow of the protoplanetary disk. Therefore in our new simulations, the planet's outer boundary is placed at the location where gas has the thermal energy to reach the portion of the flow not bound to the planet. We find that the smaller radius increases the time required for planetary growth by ~5%. Thermal pressure limits the rate at which a planet less than a few dozen times as massive as Earth can accumulate gas from the protoplanetary disk, whereas hydrodynamics regulates the growth rate for more massive planets. Within a moderately viscous disk, the accretion rate peaks when the planet's mass is about equal to the mass of Saturn. In a less viscous disk hydrodynamical limits to accretion are smaller, and the accretion rate peaks at lower mass. To account for disk dissipation, we perform some of our simulations of Jupiter's growth within a disk whose surface gas density decreases on a timescale of 3Myr. According to our simulations, proto-Jupiter's distended and thermally-supported envelope was too small to capture the planet's current retinue of irregular satellites as advocated by Pollack et al. (1979).
description: 17 pages 12 figures, 4 tables. To appear in the journal Icarus