cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Instability of the negative mass Schwarzschild naked singularity
Creators: name: Gleiser, Reinaldo J.
name: Dotti, Gustavo
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the negative mass Schwarzschild spacetime, which has a naked singularity, and show that it is perturbatively unstable. This is achieved by first introducing a modification of the well known Regge - Wheeler - Zerilli approach to black hole perturbations to allow for the presence of a ``kinematic'' singularity that arises for negative masses, and then exhibiting exact exponentially growing solutions to the linearized Einstein's equations. The perturbations are smooth everywhere and behave nicely around the singularity and at infinity. In particular, the first order variation of the scalar invariants can be made everywhere arbitrarily small as compared to the zeroth order terms. Our approach is also compared to a recent analysis that leads to a different conclusion regarding the stability of the negative mass Schwarzschild spacetime. We also comment on the relevance of our results to the stability of more general negative mass, nakedly singular spacetimes.
description: 15 pages
การเตรียมเฟสโครงสร้างและสมบัติทางไดอิเล็กตริกของวัสดุเซรามิก Na1/3Ca1/3Yb1/3Cu3Ti4O12
Creators: name: จุฑาพล จาปาแถม
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: CaCu3 Ti4O12
เซรามิก
ค่าคงที่ไดอิเล็กตริก
ค่าการสูญเสียทางไดอิเล็กตริก

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 1, 45-54
ระบบอินเทอร์เน็ตออฟทิงส์สำหรับการเพิ่มผลิตภาพของมะนาว โดยอาศัยตรรกศาสตร์คลุมเครือและการคำนวณแบบเอดจ์
Creators: name: นิสันติ ศิลประเสริฐ
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: อินเทอร์เน็ตออฟทิงส์
ตรรกศาสตร์คลุมเครือ
การคำนวณแบบเอดจ์
การคำนวณแบบคลาวด์
ตัวรับรู้ธาตุอาหารรวม

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 1, 55-70
Neutrino masses and cosmic radiation density: Combined analysis
Creators: name: Hannestad, Steen
name: Raffelt, Georg G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the range of neutrino masses and cosmic radiation content allowed by the most recent CMB and large-scale structure data. In contrast to other recent works, we vary these parameters simultaneously and provide likelihood contours in the two-dimensional parameter space of N_eff}, the usual effective number of neutrino species measuring the radiation density, and \sum m_nu. The allowed range of \sum m_nu and N_eff has shrunk significantly compared to previous studies. The previous degeneracy between these parameters has disappeared, largely thanks to the baryon acoustic oscillation data. The likelihood contours differ significantly if \sum m_nu resides in a single species instead of the standard case of being equally distributed among all flavors. For \sum m_nu=0 we find 2.7 < N_eff < 4.6 at 95% CL while \sum m_nu < 0.62 eV at 95% CL for the standard radiation content.
description: 8 pages, 2 figures
การหาจุดที่ประสิทธิภาพสูงสุดของเครื่องย่อยขยะพลาสติกที่มีความเร็วรอบทำงานต่ำ
Creators: name: ปวีณ สุขบรรเทิง
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: เครื่องบดขยะพลาสติก
โพลีเอทิลีนเทเรฟทาเลต
โพลิเอทิลีน

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 1, 71-80
Spin moment over 10-300 K and delocalization of magnetic electrons above the Verwey transition in magnetite
Creators: name: Li, Yinwan
name: Montano, P. A.
name: Barbiellini, B.
name: Mijnarends, P. E.
name: Kaprzyk, S.
name: Bansil, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In order to probe the magnetic ground state, we have carried out temperature dependent magnetic Compton scattering experiments on an oriented single crystal of magnetite (Fe$_3$O$_4$), together with the corresponding first-principles band theory computations to gain insight into the measurements. An accurate value of the magnetic moment $μ_S$ associated with unpaired spins is obtained directly over the temperature range of 10-300K. $μ_S$ is found to be non-integral and to display an anomalous behavior with the direction of the external magnetic field near the Verwey transition. These results reveal how the magnetic properties enter the Verwey energy scale via spin-orbit coupling and the geometrical frustration of the spinel structure, even though the Curie temperature of magnetite is in excess of 800 K. The anisotropy of the magnetic Compton profiles increases through the Verwey temperature $T_v$ and indicates that magnetic electrons in the ground state of magnetite become delocalized on Fe B-sites above $T_v$.
description: 5 pages, 5 figures, to appear in Journal of Physics and Chemistry of Solids
Temporal Motifs in Smart Grid
Creators: name: Joshi, Rucha Bhalchandra
name: Behera, Annada Prasad
name: Mishra, Subhankar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: A complex network can be characterized by patterns. Such frequently occurring significant patterns are called motifs and in a time dependent network, they are called temporal motifs. One of the temporal networks where temporal motifs are observed and play a major role; is the Smart Grid. The energy consumption pattern across the appliances, houses, communities and entire cities help energy utility companies and consumers plan their electricity generation and consumption. The temporal motifs for the smart grid constitutes of the consumers and producers and the edge or connection represents energy flow between two participants of the network, these connections last till the power is being consumed/generated. This paper formally defines the temporal motifs for smart grid network and proposes a way to create such temporal motifs in the network. We also discuss how the temporal motifs fit into the hierarchical structure of power distribution system of Smart Grid.
Resonant Einstein-de Haas effect in a rubidium condensate
Creators: name: Gawryluk, Krzysztof
name: Brewczyk, Mirosław
name: Bongs, Kai
name: Gajda, Mariusz
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We numerically investigate a condensate of $^{87}$Rb atoms in an F=1 hyperfine state confined in an optical dipole trap. Assuming the magnetic moments of all atoms are initially aligned along the magnetic field we observe, after the field's direction is reversed, a transfer of atoms to other Zeeman states. Such transfer is allowed by the dipolar interaction which couples the spin and the orbital degrees of freedom. Therefore, the atoms in $m_F=0,-1$ states acquire an orbital angular momentum and start to circulate around the center of the trap. This is a realization of the Einstein-de Haas effect in systems of cold gases. We find resonances which amplify this phenomenon making it observable even in very weak dipolar systems. The resonances occur when the Zeeman energy on transfer of atoms to $m_F=0$ state is fully converted to the rotational kinetic energy.
description: 4 pages, 5 figures
CFHMM: Heterogeneous Tumor CNV Classification by Hidden Markov
Creators: name: Obradovic, Aleksandar
name: Qi, Hongjian
Publisher: name: Columbia Undergraduate Science Journal
Year: 2020

description: We here develop and implement a Clonal Fraction Hidden Markov Model (CFHMM), to leverage positional information in classifying Tumor CNVs and their corresponding clonal fraction from log-ratio-normalized Tumor/Normal sequencing data. In simulated data, this approach shows accurate calling of CNVs for high-fraction mutations, and improvement in calling over a naïve clustering benchmark across the board, as well as useful purity estimation for dominant clones.
description: Columbia Undergraduate Science Journal, Vol 10 (2016): Spring 2016
Harriet Jacobs Gets a Hearing
Creators: name: Crawley, Ashon
Publisher: name: Current Musicology
Year: 2012

description: What can one hear in confinement, and how can that hearing be connective lineament? In her grandmother’s crawlspace for seven years—compressed as a means to escape, confined with access only to shallow air as a means to flight—Harriet Jacobs was both discarded and discardable. What did it mean to be discarded, for discardable materiality to bespeak an ontological condition? What can we learn from Jacobs’s existence in the crawlspace, of her throwing herself into claustrophobic conditions to stage her eventual scurrying away? Her discarded body bodies forth socially and a sociality. What is the social life—as opposed to the social death—of the discarded? Her existence in that crawlspace, as an object that was thrown and thrown away, is cause for celebration. Harriet Jacobs knew something about black performance as a mode of sociality that is still reproduced today. Sound, for Harriet Jacobs, was an important resource for allowing her thriving, even in the most horrific of conditions.
description: Current Musicology, No 93 (2012): Current Musicology
Gnypeta : Casey 1906
Creators: name: Klimaszewski, Jan
name: Savard, Karine
name: Pelletier, Georges
name: Webster, Reginald
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Gnypeta

description: I. Gnypeta sellmani species group The sellmani species group may be characterized by the following combination of characters: spermatheca with pitcher-shaped capsule bearing broad invagination, and clubshaped stem (Figs 45, 54, 63, 72, 80, 88, 96); median lobe of aedeagus with short tubus, narrowly or broadly triangular in lateral view (Figs 39, 48, 57, 66, 75, 83, 91). Species included : G. brevicornis Casey, G. ashei Klimaszewski, sp. nov., G. brincki Palm, G. atrolucens Casey, G. dentata Klimaszewski, sp. nov., G. groenlandica Lohse; and G. sellmani Brundin.
description: Published as part of Klimaszewski, Jan, Savard, Karine, Pelletier, Georges & Webster, Reginald, 2008, Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution, pp. 11-84 in ZooKeys 2 (2) on page 27, DOI: 10.3897/zookeys.2.4, http://zenodo.org/record/576410
Reaction-diffusion processes in zero transverse dimensions as toy models for high-energy QCD
Creators: name: Armesto, Nestor
name: Bondarenko, Sergey
name: Milhano, Jose Guilherme
name: Quiroga, Paloma
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine numerically different zero-dimensional reaction-diffusion processes as candidate toy models for high-energy QCD evolution. Of the models examined -- Reggeon Field Theory, Directed Percolation and Reversible Processes -- only the latter shows the behaviour commonly expected, namely an increase of the scattering amplitude with increasing rapidity. Further, we find that increasing recombination terms, quantum loops and the heuristic inclusion of a running of the couplings, generically slow down the evolution.
description: 17 pages, 7 figures
A general relativistic model for the light propagation in the gravitational field of the Solar System: the dynamical case
Creators: name: de Felice, Fernando
name: Vecchiato, Alberto
name: Crosta, Maria Teresa
name: Lattanzi, Mario G.
name: Bucciarelli, Beatrice
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Modern astrometry is based on angular measurements at the micro-arcsecond level. At this accuracy a fully general relativistic treatment of the data reduction is required. This paper concludes a series of articles dedicated to the problem of relativistic light propagation, presenting the final microarcsecond version of a relativistic astrometric model which enable us to trace back the light path to its emitting source throughout the non-stationary gravity field of the moving bodies in the Solar System. The previous model is used as test-bed for numerical comparisons to the present one. Here we also test different versions of the computer code implementing the model at different levels of complexity to start exploring the best trade-off between numerical efficiency and the micro-arcsecond accuracy needed to be reached.
description: 40 pages, 5 figures. Accepted for publication on The Astrophysical Journal. Manuscript prepared with AASLaTeX macros v.5.2
การพัฒนาเซลล์แสงอาทิตย์เพอรอฟสไกต์โดยใช้คอปเปอร์ออกไซด์เป็นวัสดุนำโฮลแบบชั้นคู่
Creators: name: รัชนีกร ปันล่า
Publisher: name: มหาวิทยาลัยราชภัฏเพชรบุรี
Year: 2020
Subjects: เพอรอฟสไกต์
วัสดุนำโฮลแบบชั้นคู่
คอปเปอร์ออกไซด์

description: วารสารวิทยาศาสตร์แห่งมหาวิทยาลัยราชภัฏเพชรบุรี, 17, 1, 81-92
Young's and shear moduli and Poisson's ratio for elastic media of high and middle symmetry
Creators: name: Paszkiewicz, T.
name: Wolski, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using bases of fourth rank tensorial bases of complete Voigt's symmetry elaborated by Walpole we obtained expressions for inverse of Young's modulus E, inverse of shear modulus G and Poisson's ratio, which depend on components of the stiffness tensor S, on direction cosines of vectors n of uniaxial load and the vector m of lateral strain with crystalline symmetry axes. Crystalline media of high and medium symmetries are considered. Such representation yields decomposition of the above elastic characteristics to isotropic and anisotropic parts. Expressions for Poisson's coefficient are well suited for studying the property of auxeticity.
description: 14 pages, no figures, 2nd Workshop on Auxetics and Related Systems Bedlewo (near Poznan), August 19-23, 2005
Chemistry of the drainage from a waste dump at BHP-Utah Mines Ltd, Island Copper mine
Creators: name: Li, Michael Guoqing
Publisher: name: University of British Columbia
Year: 2008

description: This thesis examines the chemistry of the drainage around the North Dump at BHP-Utah Mines Ltd., Island Copper Mine. It also presents the calculations of the pathway of water from precipitation and the acid generation and consumption of some areas on the North Dump. Information used in this study includes mine site fresh water quality monitoring records, acid-base accounting results of the North Dump drilling samples, flow rate measurements of drainage streams around the North Dump and of pit dewatering, physical parameters of the North Dump, surface topographical maps, meteorological records, etc. It has been found that a typical contaminated drainage has a total ionic strength of 0.0426and that the activity coefficients of the dissolved species in consideration depart markedly from unity. Most dissolved species are found to be under-saturated with respect to their most insoluble compounds, although over-saturation also exists. Levels of dissolved species are controlled by their rates of release and the frequency and amount of precipitation. Redox reactions and solubility control are investigated. Chemical reactions involving minerals present in the waste rock are considered in view of their effects on acid generation or consumption and on release rates of dissolved species. Eh-pH diagrams and solubility diagrams are constructed at conditions specific to the drainage under study.
On the 2019 CUSJ Research Symposium Honorable Mentions
Creators: name: Maddon, Alexander Mark
Publisher: name: Columbia Undergraduate Science Journal
Year: 2020

description: Following our annual CUSJ Symposium this year, we were extremely proud to announce three honorable mentions — Nikita Mullick, Justin Oh, and Niyasha Wijedasa! These three students impressed us with not only their research, but also their ability to effectively convey their complex projects in a coherent and digestible way. Congratulations once again to the CUSJ Symposium honorable mentionees!
description: Columbia Undergraduate Science Journal, Vol 13 (2019): Spring 2019
Linear Continuous Sliding Mode-based Attitude Controller with Modified Rodrigues Parameters Feedback
Creators: name: Septanto, Harry
name: Suprijanto, Djoko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper studies an attitude control system design based on modified Rodrigues parameters feedback. It employs a linear continuous sliding mode controller. The sliding mode controller is able to bring the existence of the sliding motion asymptotically. Besides, the attitude control system equilibrium point is proved to have an asymptotic stability guarantee through further analysis. This stability analysis is conducted since the sliding mode existence on the designed sliding surface does not imply the stability guarantee of the system's equilibrium. This paper ends with some numerical examples that confirm the effectiveness of the designed attitude control system.
Role of Suprathermal Runaway Electrons Returning to the Acceleration Region in Solar Flares
Creators: name: Alaoui, Meriem
name: Holman, Gordon D.
name: Allred, Joel C.
name: Eufrasio, Rafael T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: During solar flares, a large flux of energetic electrons propagate from the tops of reconnecting magnetic flux tubes toward the lower atmosphere. Over the course of the electrons' transport, a co-spatial counter-streaming return current is induced, thereby balancing the current density. In response to the return current electric field, a fraction of the ambient electrons will be accelerated into the runaway regime. However, models describing the accelerated electron beam/return-current system have generally failed to take these suprathermal runaway electrons into account self-consistently. We develop a model in which an accelerated electron beam drives a steady-state, sub-Dreicer co-spatial return-current electric field, which locally balances the direct beam current and freely accelerates a fraction of background (return-current) electrons. The model is self-consistent, i.e., the electric field induced by the co-evolution of the direct beam and the runaway current is considered. We find that (1) the return current electric field can return a significant number of suprathermal electrons to the acceleration region, where they can be further accelerated to higher energies, runaway electrons can be a few tens of percent of the return current flux returning to the nonthermal beam's acceleration region, (2) the energy gain of the suprathermal electrons can be up to $10-35$\,keV, (3) the heating rate in the corona can be reduced by an order of magnitude in comparison to models which neglect the runaway component. The results depend on the injected beam flux density, the temperature and density of the background plasma.
description: 19 pages, 10 figures, submitted to ApJ
The determination of organic carbon contents oxidized by WalkleyBlack for analysis organic carbon in soils of Thailand
Creators: name: Sutdacha Khunthong
name: Chiraphon Suaysom
name: Surachet Narabhat
name: Kamarin Nimnualrat
name: Chaiyasit Wattanawangjongsuk
Publisher: name: Faculty of Agriculture
Year: 2019
Subjects: organic carbon, WalkleyBlack method, NCS analyzer, dry combustion method, soil textures

description: Khon Kaen Agriculture Journal, 47, 4, 797-808
BB Potentials in Quenched Lattice QCD
Creators: name: Detmold, William
name: Orginos, Kostas
name: Savage, Martin J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The potentials between two B-mesons are computed in the heavy-quark limit using quenched lattice QCD at $m_π\sim 400~{\rm MeV}$. Non-zero central potentials are clearly evident in all four spin-isospin channels, (I,s_l) = (0,0) , (0,1) , (1,0) , (1,1), where s_l is the total spin of the light degrees of freedom. At short distance, we find repulsion in the $I\ne s_l$ channels and attraction in the I=s_l channels. Linear combinations of these potentials that have well-defined spin and isospin in the t-channel are found, in three of the four cases, to have substantially smaller uncertainties than the potentials defined with the s-channel (I,s_l), and allow quenching artifacts from single hairpin exchange to be isolated. The BB*πcoupling extracted from the long-distance behavior of the finite-volume t-channel potential is found to be consistent with quenched calculations of the matrix element of the isovector axial-current. The tensor potentials in both of the s_l = 1 channels are found to be consistent with zero within calculational uncertainties.
description: 30 pages
Finite doping of a one-dimensional charge density wave: solitons vs. Luttinger liquid charge density
Creators: name: Weiss, Yuval
name: Goldstein, Moshe
name: Berkovits, Richard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The effects of doping on a one-dimensional wire in a charge density wave state are studied using the density-matrix renormalization group method. We show that for a finite number of extra electrons the ground state becomes conducting but the particle density along the wire corresponds to a charge density wave with an incommensurate wave number determined by the filling. We find that the absence of the translational invariance can be discerned even in the thermodynamic limit, as long as the number of doping electrons is finite. Luttinger liquid behavior is reached only for a finite change in the electron filling factor, which for an infinite wire corresponds to the addition of an infinite number of electrons. In addition to the half filled insulating Mott state and the conducting states, we find evidence for subgap states at fillings different from half filling by a single electron or hole. Finally, we show that by coupling our system to a quantum dot, one can have a discontinuous dependence of its population on the applied gate voltage in the thermodynamic limit, similarly to the one predicted for a Luttinger liquid without umklapp processes.
description: 7 pages, 8 figures
Hall Voltage with the Spin Hall Effect
Creators: name: Pershin, Yu. V.
name: Di Ventra, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin Hall effect does not generally result in a charge Hall voltage. We predict that in systems with inhomogeneous electron density in the direction perpendicular to main current flow, the spin Hall effect is instead accompanied by a Hall voltage. Unlike the ordinary Hall effect, we find that this Hall voltage is quadratic in the longitudinal electric field for a wide range of parameters accessible experimentally. We also predict spin accumulation in the bulk and sharp peaks of spin-Hall induced charge accumulation near the edges. Our results can be readily tested experimentally, and would allow the electrical measurement of the spin Hall effect in non-magnetic systems and without injection of spin-polarized electrons.
Deconfinement
Creators: name: Pajares, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This is an attempt to summarize the talks of the session on Deconfinement.This talk covers the following topics:Elliptic flow,high transverse momentum production,propagation of jets and energy loss,heavy quarqonia in dense QCD matter,phase transition,multiplicity fluctuations,long range correlations, multiparticle production and thermalization
description: Summary talk of the session on Deconfinement of the conference Quark Confinement and Hadron Spectrum,2-7Sep,Ponta Delgada,Azores,Portugal
Apollo, Cambridge’s Institutional Repository – ORCID integration
Creators: name: Martinez Garcia, Agustina
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018

description: Short talk at "Unlocking the power of ORCID integrations" webinar showcasing repository - ORCID integrations. The talk focuses on describing Cambridge's current integration with ORCID, via Apollo repository, and DataCite's "auto-update" feature.
On numerical aspects of parameter identification for the Landau-Lifshitz-Gilbert equation in Magnetic Particle Imaging
Creators: name: Nguyen, Tram Thi Ngoc
name: Wald, Anne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 35R30, 65M32, 65N21

description: The Landau-Lifshitz-Gilbert equation yields a mathematical model to describe the evolution of the magnetization of a magnetic material, particularly in response to an external applied magnetic field. It allows one to take into account various physical effects, such as the exchange within the magnetic material itself. In particular, the Landau-Lifshitz-Gilbert equation encodes relaxation effects, i.e., it describes the time-delayed alignment of the magnetization field with an external magnetic field. These relaxation effects are an important aspect in magnetic particle imaging, particularly in the calibration process. In this article, we address the data-driven modeling of the system function in magnetic particle imaging, where the Landau-Lifshitz-Gilbert equation serves as the basic tool to include relaxation effects in the model. We formulate the respective parameter identification problem both in the all-at-once and the reduced setting, present reconstruction algorithms that yield a regularized solution and discuss numerical experiments. Apart from that, we propose a practical numerical solver to the nonlinear Landau-Lifshitz-Gilbert equation, not via the classical finite element method, but through solving only linear PDEs in an inverse problem framework.
Development of a high magnetic field drift chamber for the chaos spectrometer
Creators: name: Hofman, Gertjan J.
Publisher: name: University of British Columbia
Year: 2008

description: Design considerations for the Canadian High Acceptance Orbit Spectrometer (CHAOS) led to a set of apparently mutually inconsistent requirements for the inner (WC3) drift chamber. This detector chamber has to be cylindrical, of low mass, have excellent spatial resolution (<200 µm) and operate in a variable magnetic field of up to 1.6 T. This thesis describes the investigations which culminated in the testing of a unique new drift chamber which satisfies all the requirements for the CHAOS WC3. An overview is given of present drift chamber technology and its application in high magnetic fields. Methods to obtain the space-time relationship are reviewed. In particular, the integral, displacement and trackfitting methods have been applied to prototype chambers. A trackfitting algorithm developed to calibrate a set of wire chambers and correct systematic wire position offsets is presented. Three types of prototype chambers were designed and constructed. Tests were carried out in beams at TRIUMF to measure the spatial resolution of these chambers in a 1 T magnetic field. The results indicate that a resolution of as σx ≈ µm can be achieved. A simplified model of electron transport through gasses is used to explain electron drift properties in high magnetic field chambers. A method to resolve the usual left-right ambiguity, proposed within the framework of this model, involves the comparison of the charge induced on diagonally opposed cathode strips mounted parallel to the potential wires. After extensive simulations using the Garfield drift chamber program, a final, unique prototype was designed on which the WC3 chamber to be built for CHAOS is now based. A final beam test in a 1.6 T magnetic field showed that the left-right problem is resolved for track angles between -45° and +45°.
Modulational instability of partially coherent signals in electrical transmission lines
Creators: name: Marklund, M.
name: Shukla, P. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an investigation of the modulational instability of partially coherent signals in electrical transmission lines. Starting from the modified Ginzburg-Landau equations and the Wigner-Moyal representation, we derive a nonlinear dispersion relation for the modulational instability. It is found that the effect of signal broadbandness reduces the growth rate of the modulational instability.
description: 5 pages, 1 figure, to appear in Physical Review E
รายงานสรุปผลงานสมัมนาวิชาการญี่ปุ่นศีกษา "DO's & DON'Ts in Japan: เรียนรู้ความแตกต่างทางวัฒนธรรมไทย-ญี่ปุ่น"
Creators: name: วรรณิษา ไวยฉายี
Publisher: name: สถาบันเอเชียตะวันออกศึกษาฯ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: ความแตกต่างด้านวัฒนธรรม,รู้เขารู้เรา,นักท่องเที่ยวไทยในญี่ปุ่น

description: 2, 31, วารสารญี่ปุ่นศึกษา
Advances in the field-theoretic understanding of pion production in nucleon-nucleon collisions
Creators: name: Lensky, V.
name: Haidenbauer, J.
name: Hanhart, C.
name: Baru, V.
name: Kudryavtsev, A.
name: Meißner, U. -G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the production amplitude for the reaction $NN\to NNπ$ up to next-to-leading order in chiral perturbation theory. We show that the irreducible chiral loops at this order exactly cancel those terms that arise from the off-shell parts of the $πN$ rescattering vertex. This cancellation is required for formal consistency of the whole scheme. The net effect of the inclusion of all next-to-leading order loops is to enhance the leading rescattering amplitude by a factor of 4/3 compared to phenomenological studies, bringing its contribution to the cross section for $pp\to dπ^+$ close to the experimental value.
description: To appear in the proceedings of the international conference MESON 2006, Cracow, Poland, 9 - 13 June 2006; 4 pages, 2 figures, uses ws-ijmpa.cls
ผลการจัดการเรียนการสอนเชิงปฏิสัมพันธ์ข้ามวัฒนธรรมระหว่างผู้เรียนชาวไทยและชาวญี่ปุ่น
Creators: name: รศ. ดร.กนกวรรณ เลาหบูรณะกิจ คะตะกิริ
Publisher: name: สถาบันเอเชียตะวันออกศึกษาฯ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: การทำวิจัยในชั้นเรียน,การเรียนรู้เชิงปฏิสัมพันธ์ข้ามวัฒนธรรม,ทฤษฏี M-GTA

description: 2, 31, วารสารญี่ปุ่นศึกษา
Screening of high potential antagonistic bacteria for control sclerotium wilt disease and enhancement growth of tomato plant
Creators: name: Nanthaphak Ketsuwong
name: Petcharat Thummabenjapone
Publisher: name: Faculty of Agriculture
Year: 2019
Subjects: biological control, Tomato disease , plant growth promoting bacteria

description: Khon Kaen Agriculture Journal, 47, 4, 819-828
The Ultraviolet-Optical Color-Magnitude Diagram III: Constraints on Evolution from the Blue to Red Sequence
Creators: name: Martin, D. Christopher
name: Wyder, Ted K.
name: Schiminovich, David
name: Barlow, Tom A.
name: Forster, Karl
name: Friedman, Peter G.
name: Morrissey, Patrick
name: Neff, Susan G.
name: Seibert, Mark
name: Small, Todd
name: Welsh, Barry Y.
name: Bianchi, Luciana
name: Donas, Jose
name: Heckman, Timothy M.
name: Lee, Young-Wook
name: Madore, Barry F.
name: Milliard, Bruno
name: Rich, R. Michael
name: Szalay, Alex S.
name: Yi, Sukyoung K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We introduce a new quantity, the mass flux density of galaxies evolving from the blue sequence to the red sequence. We propose a simple technique for constraining this mass flux using the volume corrected number density in the extinction-corrected UV-optical color magnitude distribution, the stellar age indexes H-delta-a and D_n(4000), and a simple prescription for spectral evolution using a quenched star formation history. We exploit the excellent separation of red and blue sequences in the NUV-r band color-magnitude diagram. The final value we measure, 0.033 M_sun yr^-1 Mpc^-3, is strictly speaking an upper limit due to the possible contributions of bursting, composite, and extincted galaxies. However, it compares favorably with estimates of the average mass flux that we make based on the red luminosity function evolution derived from the DEEPII and COMBO-17 surveys (Bell et al 2004; Faber et al. 2005), 0.034 M_sun yr^-1 Mpc^-3. We find that the blue sequence mass has remained roughly constant since z=1 (mass flux 0.01 M_sun yr^-1 Mpc^-3) but the average on-going star formation of 0.037$ M_sun yr^-1 Mpc^-3 over 0
description: Accepted for Publication in the Special GALEX Ap. J. Supplement, December 2007
Civil-Military Cooperation in Japan's Peace Support Operations  JSDF in search of NGO partners in South Sudan
Creators: name: Yasutomi, Atsushi
name: Saya Kiba
Publisher: name: Institute of East Asian Studies, Thammasat University
Year: 2015
Subjects: civil-military cooperation,peace support operations(PSOs),non-governmental organisations (NGOs),Japan self-defence forces (JSDF), japan, south sudan, united nations mission in south sudan (UNMISS)

description: 2, 31, Japanese Studies Journal
รายงานสรุปผลงานสัมมนาวิชาการญี่ปุ่นศึกษา "ญี่ปุ่นปะทะจีน จากน่านน้ำสู่น่านฟ้า: ผลกระทบต่อนโยบายต่างประเทศของไทย"
Creators: name: วรรณิษา ไวยฉายี
Publisher: name: สถาบันเอเชียตะวันออกศึกษาฯ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: หมู่เกาะเตียวหยีหรือเซ็นกากุ,ศาลเจ้ายาสุคุนิ,นโยบายต่างประเทศ

description: 2, 31, วารสารญี่ปุ่นศึกษา
CBD-cellulose : a novel adjuvant system
Creators: name: Tekant, Bahar
Publisher: name: University of British Columbia
Year: 2008

description: Glycoprotein D gene of Herpes Simplex Virus Type 1 (gD.1) was cloned in Escherichia coli as a gene fusion to the endoglucanase A cellulose binding domain (CBD) gene of Cellulomonas fimi. The initial construct produced a form of CBDCenA-gD.1 fusion protein which severely inhibited the growth of E. coli. The inhibitory effect was attributed to the presence of the transmembrane region of the gD.1 protein. A cassette plasmid was constructed to express CBDCenA fused in frame to any other gene. A truncated gD.1 gene lacking the coding regions for the leader peptide and the transmembrane/cytoplasmic domains was inserted into this cassette, and the synthesis of 45.9 kDa fusion protein was shown. The fusion protein was severely degraded, and also, associated with the cell membranes. CBDCenA-PhoA, a chimeric protein containing alkaline phosphatase, was used to investigate the potential adjuvant effect of immunization with a CBD-fusion protein bound to cellulose. Immunogens tested included alkaline phosphatase alone, CBDCenA-PhoA alone, alkaline phosphatase in Avicel (micro crystalline cellulose) solution, CBDCenA-Pho A-Alum (aluminum hydroxide) and CBDCenA-PhoA-Avicel. Mice immunized with CBDCenA-PhoA-Avicel showed the highest anti-alkaline phosphatase and anti-CenA antibody titers. Animals immunized with alkaline phosphatase-Avicel, CBDCenA-PhoA-Alum, CBDCenA-PhoA or alkaline phosphatase alone showed mean secondary anti-alkaline phosphatase antibody titers that were 29%, 26%, 17% and 17% of the CBDCenAPhoA-Avicel titers, respectively. Animals immunized with CBDCenA-PhoA-Alum or CBDCenA-PhoA alone showed mean secondary anti-CenA antibody titers that were 57% and 42% of the CBDCenA-PhoA-Avicel titers, respectively. The results indicate that the use of CBD fusions to present an antigen bound to cellulose provides an effective adjuvant for antibody responses.
Dark energy induced by neutrino mixing
Creators: name: Capolupo, Antonio
name: Capozziello, Salvatore
name: Vitiello, Giuseppe
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The energy content of the vacuum condensate induced by the neutrino mixing is interpreted as dynamically evolving dark energy.
description: 5 pages, Presented at 3nd International Workshop DICE 2006: Quantum Mechanics between Decoherence and Determinism: new aspects from particle physics to cosmology, September 11-15, 2006
Space-time propagation of neutrino wave packets at high temperature and density
Creators: name: Ho, C. M.
name: Boyanovsky, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the space-time evolution of ``flavor'' neutrino wave-packets at finite temperature and density in the early Universe prior to BBN. We implement non-equilibrium field theory methods and linear response to study the space-time evolution directly from the effective Dirac equation in the medium. There is a rich hierarchy of time scales associated with transverse and longitudinal dispersion and coherence. A phenomenon of ``freezing of coherence'' is a result of a competition between longitudinal dispersion and the separation of wave-packets of propagating modes in the medium. Near a resonance the coherence and oscillation time scales are enhanced by a factor $1/\sin2θ$ compared to the vacuum. Collisional relaxation via charged and neutral currents occurs on time scales much shorter than the coherence time scale and for small vacuum mixing angle, shorter than the oscillation scale. Assuming that the momentum spread of the initial wave packet is determined by the large angle scattering mean free path of charged leptons, we find that the transverse dispersion time scale is the shortest and is responsible for a large suppression in both the survival and transition probabilities on time scales much shorter than the Hubble time. For small mixing angle the oscillation time scale is \emph{longer} than the collisional relaxation scale. The method also yields the evolution of right-handed wave packets. Corrections to the oscillation frequencies emerge from wave-packet structure as well as from the energy dependence of mixing angles in the medium.
description: references corrected, version to appear in PRD
On the stability of accelerating relativistic shock waves
Creators: name: Palma, Giuseppe
name: Vietri, Mario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the corrugation instability of the self-similar flow with an accelerating shock in the highly relativistic regime. We derive the correct dispersion relation for the proper modes in the self-similar regime, and conclude that this solution is unstable.
description: 25 pages, 10 figures. Accepted for publication in the Astrophysical Journal
Coherence and Entanglement in Two-Qubit Dynamics: Interplay of the Induced Exchange Interaction and Quantum Noise due to Thermal Bosonic Environment
Creators: name: Privman, V.
name: Solenov, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a review of our recent results for the comparative evaluation of the induced exchange interaction and quantum noise mediated by the bosonic environment in two-qubit systems. We report new calculations for P-donor-electron spins in Si-Ge type materials. Challenges and open problems are discussed.
description: Invited Review, 17 pages in LaTeX, with 4 EPS figures
Towards Earth AntineutRino TomograpHy (EARTH)
Creators: name: de Meijer, R. J.
name: Smit, F. D.
name: Brooks, F. D.
name: Fearick, R. W.
name: Woertche, H. J.
name: Mantovani, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The programme Earth AntineutRino TomograpHy (EARTH) proposes to build ten underground facilities each hosting a telescope. Each telescope consists of many detector modules, to map the radiogenic heat sources deep in the interior of the Earth by utilising direction sensitive geoneutrino detection. Recent hypotheses target the core-mantle boundary (CMB) as a major source of natural radionuclides and therefore of radiogenic heat. A typical scale of the processes that take place at the CMB is about 200km. To observe these processes from the surface requires an angular resolution of about 3 degrees. EARTH aims at creating a high-resolution 3D-map of the radiogenic heat sources in the interior of the Earth. It will thereby contribute to a better understanding of a number of geophysical phenomena observed at the surface of the Earth. This condition requires a completely different approach from the monolithic detector systems as e.g. KamLAND. This paper presents, for such telescopes, the boundary conditions set by physics, the estimated count rates, and the first initial results from Monte Carlo simulations and laboratory experiments. The Monte Carlo simulations indicate that the large volume telescope should consist of detector modules each comprising a very large number of detector units, with a cross section of roughly a few square centimetres. The signature of an antineutrino event will be a double pulse event. One pulse arises from the slowing down of the emitted positron, the other from the neutron capture. In laboratory experiments small sized, 10B-loaded liquid scintillation detectors were investigated as candidates for direction sensitive, low-energy antineutrino detection.
description: 13 pages, 6 figures, 1 table
Contextualizing Hip Hop Sonic Cool Pose in Late Twentieth– and Twenty–first–century Rap Music
Creators: name: Bradley, Regina
Publisher: name: Current Musicology
Year: 2012

description: In considering the cultural significance of rap music in (mis)conceptualizations of American identity, it is important to point out commercialized rap’s attachment to notions of blackness that are presumed irrefutable. Likewise, constructions of racial discourse in popular culture cannot be divorced from the effects of capitalism and enterprise on the framework of a twenty–first century black American experience. While it would be overly simplistic to dismiss commercial rap music as socially and ethically bankrupt due to the mass consumption and (over)production of corporatized black narratives, it is important to identify rap’s corporatization as a mutual investment by both record labels and artists themselves. Employing regurgitated and thus normalized scripts of blackness and black manhood is rewarded by monetary gain and popularity. The artists’ investment in such scripts sustains public visibility and thus relevance. The commercialization of rap music simultaneously enables rap to become a gauge of the post–Civil Rights experience while it becomes commodified and stereotyped. Thus, hip hop is important in providing alternative forms of negotiating the manifestations— visual, sonic, and political—of blackness that are mass consumed by a multi–ethnic audience. One way we can complicate our understanding of the impetus behind rappers’ performance and identity politics is to examine their negotiations of “black cool.” Of particular interest to this essay are the intersections of enterprise and sonic manifestations of black masculine cool in commercial rap music.
description: Current Musicology, No 93 (2012): Current Musicology
Numerical bifurcation and stability for the capillary-gravity Whitham equation
Creators: name: Charalampidis, Efstathios G.
name: Hur, Vera Mikyoung
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We adopt a robust numerical continuation scheme to examine the global bifurcation of periodic traveling waves of the capillary-gravity Whitham equation, which combines the dispersion in the linear theory of capillary-gravity waves and a shallow water nonlinearity. We employ a highly accurate numerical method for space discretization and time stepping, to address orbital stability and instability for a rich variety of the solutions. Our findings can help classify capillary-gravity waves and understand their long-term dynamics.
description: 24 pages, 22 figures
การแจกแจงมูลค่าปัจจุบันของความสูญเสียรวมภายใต้ข้อสมมติความไม่เป็นอิสระกันโดยวิธีจำลองมอนติคาร์โล
Creators: name: กฤษกร อาชววาณิชกุล
name: กมล บุษบา
Publisher: name: กองบริหารการวิจัย
Year: 2562
Subjects: การแจกแจงแบบพาเรโต
การแจกแจงแบบไวบูลล์
การแจกแจงแบบแกมมา
การแจกแจงแบบล็อกนอร์มอล

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 27, 4, 589-600
Additional file 11 of Multi-omics sequencing provides insight into floral transition in Catalpa bungei. C.A. Mey
Creators: name: Wang, Zhi
name: Ma, Wenjun
name: Zhu, Tianqing
name: Lu, Nan
name: Ouyang, Fangqun
name: Wang, Nan
name: Yang, Guijuan
name: Kong, Lisheng
name: Qu, Guanzheng
name: Zhang, Shougong
name: Wang, Junhui
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 11: Table S2. Statistics of the SMRT sequencing data.
What Drives Us? Chasing Reward in a Dopaminergic Society
Creators: name: Liu, Solana
Publisher: name: Columbia Undergraduate Science Journal
Year: 2027

description: An individual’s level of motivation is often heavily attributed as a personality trait-it’s a quality we group with self- control to embody the ideal achiever capable of success in our society. However, seemingly discrete identification of personality traits understates a major component of the motivational driving force: the dopamine mesolimbic reward system, commonly known as the reward circuit. Activation of this circuit triggers the projection of the neurotransmitter dopamine to the nucleus accumbens and feelings of pleasure (Niehaus et al., 2009). Dopamine also critically mediates feelings of motivational desire, an important determinant of incentive drive, in goal- directed behaviors (Robinson et al., 2000; Palmiter et al., 2008). This mechanism is also common to many of our everyday activities. For instance, exercising and listening to music have been associated with increased levels of dopamine (Petzinger et al., 2015). An evolutionary predisposition to chase reward further suggest dopamine’s strength in cultural behavioral manifestations. From the reinforcing effects of cocaine, alcohol, nicotine, food, and music through mediation of the mesolimbic circuit, we’re able to connect a variety of seemingly separate intrinsic and extrinsic factors to provide explanatory and predictive power for dopamine’s increasing influence on the cultural development of the dopaminergic society we live in today.
description: Columbia Undergraduate Science Journal, Vol 11 (2017): Spring 2017