cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
TIC 168789840: A Sextuply-Eclipsing Sextuple Star System
Creators: name: Powell, Brian P.
name: Kostov, Veselin B.
name: Rappaport, Saul A.
name: Borkovits, Tamas
name: Zasche, Petr
name: Tokovinin, Andrei
name: Kruse, Ethan
name: Latham, David W.
name: Montet, Benjamin T.
name: Jensen, Eric L. N.
name: Jayaraman, Rahul
name: Collins, Karen A.
name: Masek, Martin
name: Hellier, Coel
name: Evans, Phil
name: Tan, Thiam-Guan
name: Schlieder, Joshua E.
name: Torres, Guillermo
name: Smale, Alan P.
name: Friedman, Adam H.
name: Barclay, Thomas
name: Gagliano, Robert
name: Quintana, Elisa V.
name: Jacobs, Thomas L.
name: Gilbert, Emily A.
name: Kristiansen, Martti H.
name: Colon, Knicole D.
name: LaCourse, Daryll M.
name: Olmschenk, Greg
name: Omohundro, Mark
name: Schnittman, Jeremy D.
name: Schwengeler, Hans M.
name: Barry, Richard K.
name: Terentev, Ivan A.
name: Boyd, Patricia
name: Schmitt, Allan R.
name: Quinn, Samuel N.
name: Vanderburg, Andrew
name: Palle, Enric
name: Armstrong, James
name: Ricker, George R.
name: Vanderspek, Roland
name: Seager, S.
name: Winn, Joshua N.
name: Jenkins, Jon M.
name: Caldwell, Douglas A.
name: Wohler, Bill
name: Shiao, Bernie
name: Burke, Christopher J.
name: Daylan, Tansu
name: Villasenor, Joel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a sextuply-eclipsing sextuple star system from TESS data, TIC 168789840, also known as TYC 7037-89-1, the first known sextuple system consisting of three eclipsing binaries. The target was observed in Sectors 4 and 5 during Cycle 1, with lightcurves extracted from TESS Full Frame Image data. It was also previously observed by the WASP survey and ASAS-SN. The system consists of three gravitationally-bound eclipsing binaries in a hierarchical structure of an inner quadruple system with an outer binary subsystem. Follow-up observations from several different observatories were conducted as a means of determining additional parameters. The system was resolved by speckle interferometry with a 0."42 separation between the inner quadruple and outer binary, inferring an estimated outer period of ~2 kyr. It was determined that the fainter of the two resolved components is an 8.217 day eclipsing binary, which orbits the inner quadruple that contains two eclipsing binaries with periods of 1.570 days and 1.306 days. MCMC analysis of the stellar parameters has shown that the three binaries of TIC 168789840 are "triplets", as each binary is quite similar to the others in terms of mass, radius, and Teff. As a consequence of its rare composition, structure, and orientation, this object can provide important new insight into the formation, dynamics, and evolution of multiple star systems. Future observations could reveal if the intermediate and outer orbital planes are all aligned with the planes of the three inner eclipsing binaries.
Stable bundles on hypercomplex surfaces
Creators: name: Moraru, Ruxandra
name: Verbitsky, Misha
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53C26, 53C55, 53C80, 32L05, 14D21

description: A hypercomplex manifold is a manifold equipped with three complex structures I, J, K satisfying the quaternionic relations. Let M be a 4-dimensional compact smooth manifold equipped with a hypercomplex structure, and E be a vector bundle on M. We show that the moduli space of anti-self-dual connections on E is also hypercomplex, and admits a strong HKT metric. We also study manifolds with (4,4)-supersymmetry, that is, Riemannian manifolds equipped with a pair of strong HKT-structures that have opposite torsion. In the language of Hitchin's and Gualtieri's generalized complex geometry, (4,4)-manifolds are called ``generalized hyperkaehler manifolds''. We show that the moduli space of anti-self-dual connections on M is a (4,4)-manifold if M is equipped with a (4,4)-structure.
description: 17 pages. Version 3.0: reference added
Εφαρμογή της μεθόδου των πεπερασμένων στοιχείων στο θεωρητικό μοντέλο του μικρομαγνητισμού.
Creators: name: Ντάλλης, Νικόλαος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: μικρομαγνητισμός.
αναλύση πεπερασμένων στοιχείων
μικρομαγνητική.
micromagnetism.
finite element analysis.
micromagnetics.

description: Στην εργασία αυτή μελετάται η εφαρμογή της θεωρίας του μικρομαγνητισμού σε ρεαλιστικά μαγνητικά συστήματα μέσω της ανάλυσης πεπερασμένων στοιχείων, με απώτερο σκοπό την ποιοτική και ποσοτική περιγραφή της υστέρησης. Αρχικά γίνεται μία περιγραφή βασικών στοιχείων της θεωρίας του μικρομαγνητισμού με ιδιαίτερη έμφαση στις διπολικές αλληλεπιδράσεις για τις οποίες μάλιστα προτείνεται μια νέα έκφραση. Επίσης γίνεται μία εισαγωγή στη χρήση της μεθόδου των πεπερασμένων στοιχείων στον μικρομαγνητισμό. Τέλος, παρατίθενται κάποια παραδείγματα στα οποία φαίνονται τα πλεονεκτήματα της χρήσης της ανάλυσης πεπερασμένων στοιχείων για την επιβεβαίωση της θεωρίας του μικρομαγνητισμού.
description: In this work, we study an application of the theory of micromagnetism in realistic magnetic systems with finite element analysis, with intent to describe hysteresis both qualitatively and quantitatively. At first, we describe basic elements of the theory of micromagnetism with emphasis in bipolar interactions, for which a new expression is suggested. Also, an introduction in the use of finite elements in micromagnetism is made. Finally, we present some examples which illustrate the advantages of using finite element analysis in the confirmation of the theory of micromagnetism.
description: Σε συνεργασία με το Ινστιτούτο Τεχνολογίας Γκρενόμπλ (Γαλλία), το ΕΚΕΦΕ Δημόκριτος, και το CNRS (Centre National de la Researche Scientifique, Γαλλία)
Occurrence and clinical correlates of SARS-CoV-2 viremia in two German patient cohorts
Creators: name: Grikscheit, Katharina
name: Berger, Annemarie
name: Rabenau, Holger
name: Kohmer, Niko
name: Appel, Katharina S.
name: Scherer, Margarete
name: Bals, Robert
name: Blaschke, Sabine
name: Hamprecht, Axel
name: Hopff, Sina M.
name: Krefting, Dagmar
name: Meybohm, Patrick
name: Nürnberger, Carolin
name: Heuschmann, Peter
name: Pley, Caitlin
name: de Miranda, Susana M. Nunes
name: Dahl, Edgar
name: Jensen, Björn
name: Illig, Thomas
name: Anton, Gabriele
name: Vehreschild, Jörg Janne
name: Ciesek, Sandra
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Viremia defined as detectable SARS-CoV-2 RNA in the blood is a potential marker of disease severity and prognosis in COVID-19 patients. Here, we determined the frequency of viremia in serum of two independent COVID-19 patient cohorts within the German National Pandemic Cohort Network (German: Nationales Pandemie Kohorten Netzwerk, NAPKON) with diagnostic RT-PCR against SARS-CoV-2. A cross-sectional cohort with 1122 COVID-19 patients (German: Sektorenuebergreifende Platform, SUEP) and 299 patients recruited in a high-resolution platform with patients at high risk to develop severe courses (German: Hochaufloesende Plattform, HAP) were tested for viremia. Our study also involved a comprehensive analysis and association of serological, diagnostic, and clinical parameters of the NAPKON medical dataset. Prevalence of viremia at the recruitment visit was 12.8% (SUEP) and 13% (HAP), respectively. Serological analysis revealed that viremic patients had lower levels of SARS-CoV-2 specific antibodies as well as lower neutralizing antibodies compared to aviremic patients. Viremia was associated with severity (<0.0001 SUEP; 0.002 HAP) and mortality of COVID-19 (both cohorts <0.0001) compared to aviremic patients. While rare, viremia was also detected in patients with mild disease (0.7%). In patients of the SUEP cohort with acute kidney disease (p = 0.0099) and hematooncological conditions (p = 0.0091), viremia was detected more frequently. Compared to the aviremic group, treatment with immunomodulating drugs as well as elevated levels of inflammatory markers in the blood was more frequent in the viremic group. In conclusion, our analysis revealed that detectable viremia correlates with hyperinflammatory conditions and higher risk for severe COVID-19 disease.
บทวิจารณ์หนังสือ : Going Indochinese: Contesting Concepts Of Space And Place In French Indochina
Creators: name: สุธิดา ตันเลิศ
Publisher: name: Center for Research on Plurality in the Mekong Region (CERP)
Year: 2015

description: 2, 11, Journal of Mekong Societies
Basic nitrogen (BaN): a ‘privileged element’ in medicinal chemistry
Creators: name: Sundriyal, Sandeep
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Mathematical Sciences not elsewhere classified
subject: Plant Biology
subject: Virology

description: Basic nitrogen (BaN): a ‘privileged element’ in medicinal chemistry
Strange Particle Production and Elliptic Flow from CERES
Creators: name: Milosevic, Jovan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Elliptic flow measurements as a function of p_T of charged (pi^+- and low-p_T protons) and strange (Lambda and K^0_S) particles from Pb+Au collisions at 158 AGeV/c are presented, together with measurements of phi and K^0_S meson production. A mass ordering effect was observed. Scaling to the number of constituent quarks and transverse rapidity y^fs_T scaling are presented. The results are compared with results from the NA49 and STAR experiments and with hydrodynamical calculations. For the first time in heavy-ion collisions, phi mesons were reconstructed in the same experiment both in the K^+K^- and in the e^+e^- decay channels. The obtained transverse mass distributions of phi mesons are compared with results from the NA49 and NA50 experiments. The yield and the inverse slope parameter of the K^0_S mesons were reconstructed from two independent analyses. Our results are compared with those from the NA49 and NA57 experiments.
description: Submitted to J. Phys. G (Proceedings of the 9th International Conference on Strangeness in Quark Matter, Los Angeles, USA, March 26-31) 9 pages, 7 figures
title: Olrac-RTI: A new and operational approach to holistic management of fisheries for multiple commercial species and ecosystem objectives. Part 2.
Creators: name: Barkai, Amos
name: Meredith, Guy
name: Felaar, Fatima
name: Kraak, Sarah B. M.
name: Reid, Dave G.
Publisher: name: ASC 2013 - Theme session G
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 recently proposed Real-Time Incentives (RTI) fisheries management approach (http://icesjms.oxfordjournals.org/content/69/4/590) integrates mixed-fisheries targets and ecosystem objectives into a single „currency‟ for management measures. In this approach, fishermen would be allocated fishing-impact credits, called RTIs, to spend according to spatiotemporally varying tariffs, replacing the conventional landings quota. RTI-quotas and tariffs would be based on commercial stock and ecosystem targets, using a tested algorithm so that the spatiotemporal tariffs reflect our understanding of the exploited ecosystem. The fisherman could dynamically choose how to spend his RTIs, e.g. by limited fishing in sensitive areas and fishing longer in less sensitive areas. The RTI-tariffs would be gear and vessel-type specific. Olrac SPS has developed and manufactured a complete electronic logbook and vessel tracking and data recording and reporting system (Dynamic Data Logger, DDL) linked to an onshore data management system (Dynamic Data Manager, DDM). Olrac SPS is now developing a customised version of DDL-DDM to suit the requirements of the RTI approach. The system will provide the onboard software with the up-to-date tariff maps. Once a fishing trip has started the Olrac DDL will record the time the vessel spent in each of predefined RTI management rectangles. This information will be sent to the Olrac DDM and will be used together with any available VMS data to automatically calculate the amount of RTIs utilised by the vessel during its fishing trip. This amount will then be automatically deducted from the vessel‟s annual RTI-account. Olrac DDM will also integrate the vessels‟ reported catch data from the Olrac DDL vessel units and combine them, using a tested algorithm, to update the spatial tariffs as appropriate, so that the updated tariff maps could reflect our understanding of the exploited ecosystem. Olrac DDM will also provide the managers with detailed and summary reports of RTI uptake and reported catches in time and space. This management approach provides fishermen with a practical and simple management regime, in contrast to the current micro-management.
(Quasi-)Real-Time Inversion of Airborne Time-Domain Electromagnetic Data via Artificial Neural Network
Creators: name: Bai, Peng
name: Vignoli, Giulio
name: Viezzoli, Andrea
name: Nevalainen, Jouni
name: Vacca, Giuseppina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The possibility to have results very quickly after, or even during, the collection of electromagnetic data would be important, not only for quality check purposes, but also for adjusting the location of the proposed flight lines during an airborne time-domain acquisition. This kind of readiness could have a large impact in terms of optimization of the Value of Information of the measurements to be acquired. In addition, the importance of having fast tools for retrieving resistivity models from airborne time-domain data is demonstrated by the fact that Conductivity-Depth Imaging methodologies are still the standard in mineral exploration. In fact, they are extremely computationally efficient, and, at the same time, they preserve a very high lateral resolution. For these reasons, they are often preferred to inversion strategies even if the latter approaches are generally more accurate in terms of proper reconstruction of the depth of the targets and of reliable retrieval of true resistivity values of the subsurface. In this research, we discuss a novel approach, based on neural network techniques, capable of retrieving resistivity models with a quality comparable with the inversion strategy, but in a fraction of the time. We demonstrate the advantages of the proposed novel approach on synthetic and field datasets.
Potential hydroelectric energy estimation from limited data for run-of-river hydroelectric plants
Creators: name: Burton, Brent Lance
Publisher: name: University of British Columbia
Year: 2009

description: The estimation of the energy that will be produced by a proposed hydroelectric project, while obviously an essential component of any project feasibility analysis, is typically one of the more imprecise details associated with the investigation. The interpolated historical flow data used for any analysis is usually approximate, yet precise calculations of estimated energy are often conducted using this data. The objective of this thesis was to develop a computer program that directly takes into account the judgment of an experienced engineer in the estimation of potential energy output from a run-of-river hydroelectric plant when there is little.or no flow data at the site in question.. , The program requires the user to provide estimated curves of the annual energy, expressed as a percentage of the theoretical maximum energy, versus design flow expressed as a percentage of the mean annual flow; the user is also required to enter low, probable and high estimates of the mean annual flow. The program will create two additional estimates: a low-probable and a probable-high. The program will then look up the corresponding energy for each value of the mean annual flow from the graph provided by the user; it will also calculate and look up the corresponding standard deviation. Then, for a variety of design flows, the program will utilize a standard five by five normalized probability matrix derived from the normal distribution to calculate the mean value of the percentage of the theoretical maximum energy and the standard deviation of this value; this will be accomplished by multiplying the matrix of five energies and five standard deviations by the probability matrix. The range of design flows and the step between design flows is chosen by the user. The results of the program are compared with accurate results from stations with known hydrological data.
Path integration and perturbation theory with complex Euclidean actions
Creators: name: Alexanian, Garnik
name: MacKenzie, R.
name: Paranjape, M. B.
name: Ruel, Jonathan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Euclidean path integral quite often involves an action that is not completely real {\it i.e.} a complex action. This occurs when the Minkowski action contains $t$-odd CP-violating terms. Analytic continuation to Euclidean time yields an imaginary term in the Euclidean action. In the presence of imaginary terms in the Euclidean action, the usual method of perturbative quantization can fail. Here the action is expanded about its critical points, the quadratic part serving to define the Gaussian free theory and the higher order terms defining the perturbative interactions. For a complex action, the critical points are generically obtained at complex field configurations. Hence the contour of path integration does not pass through the critical points and the perturbative paradigm cannot be directly implemented. The contour of path integration has to be deformed to pass through the complex critical point using a generalized method of steepest descent, in order to do so. Typically, what is done is that only the real part of the Euclidean action is considered, and its critical points are used to define the perturbation theory. In this article we present a simple 0+1-dimensional example, of $N$ scalar fields interacting with a U(1) gauge field, in the presence of a Chern-Simons term, where alternatively, the path integral can be done exactly, the procedure of deformation of the contour of path integration can be done explicitly and the standard method of only taking into account the real part of the action can be followed. We show explicitly that the standard method does not give a correct perturbative expansion.
description: 11 pages, no figures, version to be published in PRD
Towards the simplest simulation of incompressible viscous flows inspired by the lattice Boltzmann method
Creators: name: Huang, Jun-Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The lattice Boltzmann method (LBM) has gained increasing popularity in incompressible viscous flow simulations, but it uses many more variables than necessary. This defect was overcome by a recent approach that solves the more actual macroscopic equations obtained through Taylor series expansion analysis of the lattice Boltzmann equations [Lu et al., J. Comp. Phys., 415, 109546 (2020)]. The key is to keep some small additional terms (SATs) to stabilize the numerical solution of the weakly compressible Navier-Stokes equations. However, there are many SATs that complicate the implementation of their method. Based on some analyses and numerous tests, we ultimately pinpoint two essential ingredients for stable simulations: (1) suitable density (pressure) diffusion added to the continuity equation; (2) proper numerical dissipation related to the velocity divergence added to the momentum equations. Then, we propose a simplified method that is not only easier to implement but noticeably faster than the original method and the LBM. It contains much simpler SATs that only involve the density (pressure) derivatives and it requires no intermediate steps or variables. Besides, it is extended for two-phase flows with uniform density and viscosity. Several test cases, including some two-phase problems under two dimensional, axisymmetric and three dimensional geometries, are presented to demonstrate its capability. This work may help pave the way for the simplest simulation of incompressible viscous flows on collocated grids based on the artificial compressibility methodology.
title: ICES EcoSystemData, data and information ready to deliver the marine knowledge needed
Creators: name: Pinto, Carlos
name: Holdsworth, Neil
Publisher: name: ASC 2013 - Theme session G
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. Observation and monitoring needs to support ecosystem-based management – preparing to serve the current of data coming upon us
Dependence of SU(N) coupling behavior on the size of extra dimensions
Creators: name: Uekusa, Nobuhiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Coupling constants at high energy scales are studied in SU(N) gauge theory with distinct sizes of extra dimensions. We present the solution of gauge couplings as functions of the energy in such a way as to track the number of Kaluza-Klein modes. In a flat extra dimension, it is shown that the gauge couplings have logarithmic dependence on the size of the extra dimension and linear dependence on the number of Kaluza-Klein modes. We find some patterns of the dependence on flavor of bulk and brane fermions. Dependence of gauge couplings on the size of an extra dimension is discussed also in a warped extra dimension.
description: 13 pages, 4 figures; minor changes addressed and references added
Magnetic and Electronic Switch in Metal Intercalated Two-Dimensional GeP$_3$
Creators: name: Deus, D. P. de A.
name: de Oliveira, I. S. S.
name: Oliveira, J. B.
name: Scopel, W. L.
name: Miwa, R. H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Intercalation of foreign atoms in two dimensional hosts has been considered a quite promising route in order to engineer the electronic, and magnetic properties in 2D plataforms. In the present study, we performed a first-principles theoretical investigation of the energetic stability, and the magnetic/electronic properties of 2D GeP$_3$ doped by Cr atoms. Our total energy results reveal the formation of thermodynamically stable Cr doped GeP$_3$ bilayer [(GeP$_3$)$_{BL}$], characterized by interstitial Cr atoms lying in the van der Waals (vdW) gap between (GeP$_3$)$_{BL}$ [(GeP$_3$)$_{BL}^{Cr}$]. We show that the ground state row-wise antiferromagnetic (RW-AFM) phase of (GeP$_3$)$_{BL}^{Cr}$ can be tuned to a ferromagnetic (FM) configuration upon compressive mechanical strain ($\varepsilon$), Cr$^{\uparrow \downarrow} \xrightarrow{\varepsilon}$Cr$^{\uparrow \uparrow}$. By considering its stacked counterparts, (GeP$_3$)$_{BL}^{Cr}$/(GeP$_3$)$_{BL}^{Cr}$, and (GeP$_3$)$_{BL}^{Cr}$/Cr/(GeP$_3$)$_{BL}^{Cr}$, we found that such a magnetic tuning is dictated by a combination of intralayer and interlayer couplings, where the RW-AFM phase change to layer-by-layer FM (Cr$^{\uparrow \uparrow}$//Cr$^{\uparrow \uparrow}$) and AFM (Cr$^{\uparrow \uparrow}$/Cr$^{\downarrow \downarrow}$/Cr$^{\uparrow \uparrow}$) phases, respectively. Further electronic band structure calculations show that these Cr doped systems are metallic, characterized by the emergence of strain induced spin polarized channels at the Fermi level. These findings reveal that the atomic intercalation, indeed, offers a new set of degree of freedom for the design and control the magnetic/electronic properties in 2D systems.
description: 8 pages and 6 figures
Rehabilitation of companion animals following orthopaedic surgery
Creators: name: Baltzer, WI
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Physical therapy and rehabilitation following orthopaedic surgery in companion animals have become more common and new advancements in this field have been made in recent years. Surgery alone may not return the animal to its previous physical activity or work-related tasks, whether due to concurrent soft tissue trauma, arthrogenic muscle inhibition or osteoarthritis. Rehabilitation therapies following surgery can restore function as well as strength, coordination and balance. Many simple techniques such as cryotherapy and passive range of motion exercises have been shown to improve outcomes following musculoskeletal procedures and may help restore function as well as reduce pain and facilitate healing. Some techniques are more useful during different stages in order to achieve optimum tissue healing and recovery of function. During the first 72 hours, rehabilitation should focus on reduction of inflammation and pain, maintaining joint nutrition and range of motion, and stimulating vascularisation and healing; and may include cryotherapy, passive range of motion exercises, massage and therapeutic exercises. Following the initial recovery period, the goals of rehabilitation also include restoring strength, balance and normal gait patterns, as well as recovery of function. During this period the focus of therapy may shift toward therapeutic exercises, aquatic therapy and increasing activity in the animal. Therapeutic modalities such as neuromuscular electrical stimulation, photobiomodulation (laser therapy), therapeutic ultrasound and extracorporeal shock wave therapy have been reported to reduce pain and inflammation, enhance healing and reduce recovery time in the early and late stages following orthopaedic surgery.
PSR B1828-11: a precession pulsar torqued by a quark planet?
Creators: name: Liu, K.
name: Yue, Y. L.
name: Xu, R. X.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The pulsar PSR B1828-11 has long-term, highly periodic and correlated variations in both pulse shape and the rate of slow-down. This phenomenon may provide evidence for precession of the pulsar as suggested previously within the framework of free precession as well as forced one. On a presumption of forced precession, we propose a quark planet model to this precession henomenon instead, in which the pulsar is torqued by a quark planet. We construct this model by constraining mass of the pulsar ($M_{\rm psr}$), mass of the planet ($M_{\rm pl}$) and orbital radius of the planet ($r_{\rm pl}$). Five aspects are considered: derived relation between $M_{\rm psr}$ and $r_{\rm pl}$, movement of the pulsar around the center of mass, ratio of $M_{\rm psr}$ and $M_{\rm pl}$, gravitational wave radiation timescale of the planetary system, and death-line criterion. We also calculate the range of precession period derivative and gravitational wave strength (at earth) permitted by the model. Under reasonable parameters, the observed phenomenon can be understood by a pulsar ($10^{-4}\sim10^{-1}M_{\odot}$) with a quark planet ($10^{-8}\sim10^{-3}M_{\odot}$) orbiting it. According to the calculations presented, the pulsar would be a quark star because of its low mass, which might eject a lump of quark matter (to become a planet around) during its birth.
description: 6 pages, 3 figures, accepted by MNRAS (Letters)
title: Using available data to assess fishing impact and good environmental status in European seas: a diagnosis from stock-based and ecosystem indicators
Creators: name: Gascuel, Didier
Publisher: name: ASC 2013 - Theme session G
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. Stock-based and ecosystem-based indicators were shown to provide a diagnosis on the fishing impact and environmental status of European seas. In the seven European marine ecosystems covering the Baltic and the North-western Atlantic: i) trends in landings since 1950 were examined; ii) integrated syntheses of the status and trends in fish stocks were consolidated at the ecosystem level; iii) trends in ecosystem indicators based on landings and scientific survey data were analyzed. Yields began to decrease everywhere (except in the Baltic) from the mid-1970s, as a result of the overexploitation of some major stocks. Fishermen adapted by exploiting a wider part of the ecosystems, but this was insufficient and total landings have been halved over the last 30 years. The highest fishing impact occurred in the late 1990s, with high fishing mortalities and a clear decrease in stock-based and ecosystem indicators. Over the past decade, a decrease in the fishing pressure is observed, the mean fishing mortality rate of all assessed stocks being almost halved in the seven ecosystems. But no clear recovery in the biomass and ecosystem indicators is apparent for the moment. In addition, the mean recruitment index was shown to decrease, being also halved in almost all ecosystems.
Non-constant Non-commutativity in 2d Field Theories and a New Look at Fuzzy Monopoles
Creators: name: Stern, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We write down scalar field theory and gauge theory on two-dimensional noncommutative spaces ${\cal M}$ with nonvanishing curvature and non-constant non-commutativity. Usual dynamics results upon taking the limit of ${\cal M}$ going to i) a commutative manifold ${\cal M}_0$ having nonvanishing curvature and ii) the noncommutative plane. Our procedure does not require introducing singular algebraic maps or frame fields. Rather, we exploit the Kähler structure in the limit i) and identify the symplectic two-form with the volume two-form. As an example, we take ${\cal M}$ to be the stereographically projected fuzzy sphere, and find magnetic monopole solutions to the noncommutative Maxwell equations. Although the magnetic charges are conserved, the classical theory does not require that they be quantized. The noncommutative gauge field strength transforms in the usual manner, but the same is not, in general, true for the associated potentials. We develop a perturbation scheme to obtain the expression for gauge transformations about limits i) and ii). We also obtain the lowest order Seiberg-Witten map to write down corrections to the commutative field equations and show that solutions to Maxwell theory on ${\cal M}_0$ are stable under inclusion of lowest order noncommutative corrections. The results are applied to the example of noncommutative AdS${}^2$.
description: 27 pages
Core-Level Photoelectron Spectroscopy Study of UTe$_2$
Creators: name: Fujimori, Shin-ichi
name: Kawasaki, Ikuto
name: Takeda, Yukiharu
name: Yamagami, Hiroshi
name: Nakamura, Ai
name: Homma, Yoshiya
name: Aoki, Dai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The valence state of UTe$_2$ was studied by core-level photoelectron spectroscopy. The main peak position of the U $4f$ core-level spectrum of UTe$_2$ coincides with that of UB$_2$, which is an itinerant compound with a nearly $5f^3$ configuration. However, the main peak of UTe$_2$ is broader than that of UB$_2$, and satellite structures are observed in the higher binding energy side of the main peak, which are characteristics of mixed-valence uranium compounds. These results suggest that the U 5$f$ state in UTe$_2$ is in a mixed valence state with a dominant contribution from the itinerant $5f^3$ configuration.
description: accepted to J. Phys. Soc. Jpn. (2021)
Stability of an electromagnetically levitated spherical sample in a set of coaxial circular loops
Creators: name: Priede, J.
name: Gerbeth, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This paper presents a theoretical study of oscillatory and rotational instabilities of a solid spherical body, levitated electromagnetically in axisymmetric coils made of coaxial circular loops. We apply our previous theory to analyze the static and dynamic stability of the sample depending on the ac frequency and the position of the sample in the coils for several simple configurations. We introduce an original analytical approach employing a gauge transformation for the vector potential. First, we calculate the spring constants that define the frequency of small-amplitude oscillations. For static stability, the spring constants must be positive. Dynamic instabilities are characterized by critical ac frequencies that, when exceeded, may result either in a spin-up or oscillations with increasing amplitude. We found that the critical frequencies increase with the nonuniformity of the field. We show that for a spherically harmonic field, the critical frequency for the spin-up instability in a field of degree $l$ coincides with the critical frequency for the oscillatory instability in a field of degree $l+1$.
description: 14 pages, 6 figures
title: Development of ITSASGIS-5D: seeking interoperability between Marine GIS layers and scientific multidimensional data using open source tools and OGC services for multidisciplinary research.
Creators: name: Sagarminaga, Yolanda
name: Galparsoro, Ibon
name: Orbe, Iratxe
name: Sánchez, Jose Antonio
Publisher: name: ASC 2013 - Theme session G
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. ITSASGIS-5D is a marine spatial data infrastructure than we are developing within the AZTI’s marine research unit to allow interoperability between different geo-referenced marine data types produced in the institute and by external marine data providers. For this aim, open source tools and international standards and recommendations have been implemented in data and metadata formats and distribution services (i.e. ISO13115, CF conventions, OGC, etc.). This system includes a data repository and several data distribution services (OGC-WMS, OGC-WFS, OPENDAP, NCSS, NCWMS and NCSOS), a data catalogue with data discovery services (OGC-CSW), and a web portal designer to generate online viewers for data visualisation, query and some customized end-user applications.
Prenex normal form theorems in semi-classical arithmetic
Creators: name: Fujiwara, Makoto
name: Kurahashi, Taishi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: Akama et al. systematically studied an arithmetical hierarchy of the law of excluded middle and related principles in the context of first-order arithmetic. In that paper, they first provide a prenex normal form theorem as a justification of their semi-classical principles restricted to prenex formulas. However, there are some errors in their proof. In this paper, we provide a simple counterexample of their prenex normal form theorem, then modify it in an appropriate way. In addition, we characterize several prenex normal form theorems with respect to semi-classical arithmetic.
description: 35 pages
Evidence for coherent collective Rydberg excitation in the strong blockade regime
Creators: name: Heidemann, Rolf
name: Raitzsch, Ulrich
name: Bendkowsky, Vera
name: Butscher, Björn
name: Löw, Robert
name: Santos, Luis
name: Pfau, Tilman
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Blockade effects on the single quantum level are at the heart of quantum devices like single-electron transistors. The blockade mechanisms are based on strong interactions like the Coulomb interaction in case of single electrons. Neutral atoms excited into a Rydberg state experience abnormally strong interactions that lead to the corresponding blockade effect for Rydberg atoms. In this paper we report on our measurements of a strong van der Waals blockade, showing that only one out of several thousand atoms within a blockade volume can be excited. In addition, our experimental results demonstrate the coherent nature of the excitation of magnetically trapped ultracold atoms into a Rydberg state, confirming the predicted dependence of the collective Rabi frequency on the square root of the mesoscopic system size. This collective coherent behaviour is generic for all mesoscopic systems which are able to carry only one single excitation quantum.
description: 5 pages, 4 figures
The critical importance of planned small ruminant livestock health and production in addressing global challenges surrounding food production and poverty alleviation
Creators: name: Sargison, ND
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Ecology
subject: Science Policy

description: Small ruminants are particularly well suited to meet United Nations Sustainable Development Goals surrounding food security, human wellbeing and poverty alleviation in different environmental and climatic settings. However the current efficiency of food production from small ruminants in both developed agricultural regions and in lower and middle income countries is woefully inadequate to meet predicted global needs over the forthcoming decades. Most global research to address this challenge is focussed on the genetics of animal growth, conformation and disease tolerance or resistance traits, albeit the practical consequences of such selection and strategies to use genetically improved animals in the field are uncertain. Any long-term benefits derived from small ruminant genetic selection will only be impactful if steps are first taken to keep animals alive, healthy and productive through iterative planned health management. Parasites are the foremost global infectious disease constraints to efficient small ruminant production. Their genetic adaptability to exploit opportunities afforded by effects of climatic or management changes on free-living stages, or exposure of parasitic stages to drugs, presents specific challenges to their sustainable control. Hence, parasite control provides a relevant means of engagement with livestock keepers and farmers on the topic of planned animal health management. The value of parasitology in this regard is enhanced by the availability of simple to use and accessible diagnostic tools.
Shape, Illumination, and Reflectance from Shading
Creators: name: Barron, Jonathan T.
name: Malik, Jitendra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: A fundamental problem in computer vision is that of inferring the intrinsic, 3D structure of the world from flat, 2D images of that world. Traditional methods for recovering scene properties such as shape, reflectance, or illumination rely on multiple observations of the same scene to overconstrain the problem. Recovering these same properties from a single image seems almost impossible in comparison -- there are an infinite number of shapes, paint, and lights that exactly reproduce a single image. However, certain explanations are more likely than others: surfaces tend to be smooth, paint tends to be uniform, and illumination tends to be natural. We therefore pose this problem as one of statistical inference, and define an optimization problem that searches for the *most likely* explanation of a single image. Our technique can be viewed as a superset of several classic computer vision problems (shape-from-shading, intrinsic images, color constancy, illumination estimation, etc) and outperforms all previous solutions to those constituent problems.
title: Using acoustic data from pelagic fishing vessels to monitor pelagic fish stocks and their ecosystem
Creators: name: Fässler, Sascha M.M.
name: Brunel, Thomas
name: Gastauer, Sven
name: Burggraaf, Dirk
Publisher: name: ASC 2013 - Theme session G
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. Pelagic trawlers make extensive use of acoustic equipment during their fishing operations. These data could potentially be recorded to provide useful information such as high-resolution fleet behaviour, fish density estimates on small spatial scales on the fishing grounds, extent of stock distribution, and patterns of stock migration over time
Rehabilitation of companion animals following orthopaedic surgery
Creators: name: Baltzer, W.I.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified

description: Physical therapy and rehabilitation following orthopaedic surgery in companion animals has become more common and new advancements in this field have been made in recent years. Surgery alone may not return the animal to its previous physical activity or work-related tasks, whether due to concurrent soft tissue trauma, arthrogenic muscle inhibition or osteoarthritis. Rehabilitation therapies following surgery can restore function as well as strength, coordination and balance. Many simple techniques such as cryotherapy and passive range of motion exercises have been shown to improve outcomes following musculoskeletal procedures and may help restore function as well as reduce pain and facilitate healing. Some techniques are more useful during different stages in order to achieve optimum tissue healing and recovery of function. During the first 72 hours, rehabilitation should focus on reduction of inflammation and pain, maintaining joint nutrition and range of motion, and stimulating vascularisation and healing; and may include cryotherapy, passive range of motion exercises, massage and therapeutic exercises. Following the initial recovery period, the goals of rehabilitation also include restoring strength, balance and normal gait patterns, as well as recovery of function. During this period the focus of therapy may shift toward therapeutic exercises, aquatic therapy and increasing activity in the animal. Therapeutic modalities such as neuromuscular electrical stimulation, photobiomodulation (laser therapy), therapeutic ultrasound and extracorporeal shock wave therapy have been reported to reduce pain and inflammation, enhance healing and reduce recovery time in the early and late stages following orthopaedic surgery.
Trans-Planckian Physics and Non-Commutative Inflation
Creators: name: Koh, Seoktae
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-commutativity of spacetime at the Planck scale may deform the usual dispersion relations. And these deformed dispersion relations could lead to the accelerating phase without a scalar field. In this paper, we have calculated the spectral index and the running of spectral index in a non-commutative inflation model. Non-commutative inflation with thermal radiation gives a scale invariant spectrum in the limit $w \to -1$ and negative running spectral index which are consistent with the WMAP 3-year results.
description: 11pages, 1 figure, To appear in the Proceedings of the CospA 2007, Taiwan
title: ITSASTEKA a scientific survey aimed on EMSD descriptors in the Basque Continental Shelf (Bay of Biscay-NE Atlantic)
Creators: name: Quincoces, Iñaki
name: Arregi, Luis
name: Basterretxea, Mikel
name: Cuevas, Nagore
name: Garmendia, Joxe Mikel
name: Larreta, Joana
name: Oyarzabal, Iñaki
name: Rodriguez, J. Germán
name: Uriarte, Ainhize
name: Santurtún, Marina
name: Zorita, Izaskun
Publisher: name: ASC 2013 - Theme session G
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 European Marine Strategy Directive (EMSD) (Directive 2008/56/EC) establishes a framework and common targets for the protection and conservation of the marine environment. This directive requires the implementation of all necessary measures to achieve the good environmental status by 2020, according to 11 qualitative descriptors. Knowing the type of data required by the EMSD and after identifying the information gaps, a survey and complementary studies were designed. After three years of survey the information available from the Basque part of the Bay of Biscay has improved substantially making possible a better response to the requirements of the EMSD.
Χρήση αισθητήρων για την ανίχνευση συναισθημάτων μαθητών και εφαρμογή τους σε προσαρμοστικό εκπαιδευτικό περιβάλλον:
Creators: name: Αποστολίδης, Ιπποκράτης Μόσχου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Συνεργατική μάθηση
Βιοσήματα
Βιοανάδραση
Γαλβανική απόκριση
Αναγνώριση συναισθημάτων
Collaborative learning
Bio-signals
Biofeedback
Galvanic response
Emotion detection

description: Ο σκοπός της παρούσας διπλωματικής εργασίας είναι η μελέτη ανάπτυξης μιας διάταξης ικανής να μπορεί να συλλέγει και να αξιολογεί βιο-σήματα από άτομα που μετέχουν σε μαθησιακές δραστηριότητες οι οποίες έχουν κυρίως την μορφή συνεργασίας μικρών ομάδων. Η συσκευή η οποία αναπτύχθηκε για τις ανάγκες αυτής της εργασίας , για λόγους ευελιξίας, αποφασίστηκε να είναι φορητή , να συνδέεται μέσω USB θύρας με έναν υπολογιστή στον οποίο εκτελούνται προγράμματα που συλλέγουν τιμές, τις αξιολογούν και ενημερώνουν μία βάση δεδομένων η οποία μπορεί να είναι εγκατεστημένη στον ίδιο σταθμό εργασίας ή σε κάποιο server και να επικοινωνεί μέσω δικτύου. Οι τιμές των λαμβανόμενων βιο-σημάτων αφορούν τις φυσιολογικές αντιδράσεις του οργανισμού, οι οποίες επηρεάζουν την αγωγιμότητα του δέρματος και έτσι δίνεται η δυνατότητα να ερμηνευθούν κάποιες βασικές συναισθηματικές καταστάσεις ενός ατόμου. Πιο συγκεκριμένα καταστάσεις άγχους έχουν σαν αποτέλεσμα να αυξάνεται η υγρασία στο ανθρώπινο δέρμα με συνέπεια να μειώνεται η αντίσταση και να αυξάνεται η αγωγιμότητα του δέρματος στο ηλεκτρικό ρεύμα. Η εργασία αυτή θεωρεί ότι η ρύθμιση έντονων συναισθηματικών καταστάσεων μπορεί να είναι ένας σημαντικός παράγοντας στην εφαρμογή της προσαρμοστικότητας των μαθησιακών δραστηριοτήτων με στόχο την αποκατάσταση της ηρεμίας η οποία μπορεί να συμβάλλει αποφασιστικά στην καλύτερη απόδοση αυτών που συμμετέχουν στην δραστηριότητα.
description: The purpose of this paper is a case study of the development of a device that could collect and evaluate bio-signals by people engaged in learning activities. The physiological reactions of the body, affects the conductivity of the skin producing bio-signals that provides the opportunity to estimate some basic human emotional states. In particular stressful situations have resulted in increased moisture in human skin, reducing the resistance and increasing the conductivity of the skin to electrical current. In this case study there is a reference to adaptive collaborative learning support. This work suggests that emotional state regulation may be an important factor in implementing the adaptivity of learning activities.