cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Single-parameter non-adiabatic quantized charge pumping
Creators: name: Kaestner, B.
name: Kashcheyevs, V.
name: Amakawa, S.
name: Li, L.
name: Blumenthal, M. D.
name: Janssen, T. J. B. M.
name: Hein, G.
name: Pierz, K.
name: Weimann, T.
name: Siegner, U.
name: Schumacher, H. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Controlled charge pumping in an AlGaAs/GaAs gated nanowire by single-parameter modulation is studied experimentally and theoretically. Transfer of integral multiples of the elementary charge per modulation cycle is clearly demonstrated. A simple theoretical model shows that such a quantized current can be generated via loading and unloading of a dynamic quasi-bound state. It demonstrates that non-adiabatic blockade of unwanted tunnel events can obliterate the requirement of having at least two phase-shifted periodic signals to realize quantized pumping. The simple configuration without multiple pumping signals might find wide application in metrological experiments and quantum electronics.
description: 4 pages, 4 figures
Wealth rheology
Creators: name: Burda, Zdzislaw
name: Krawczyk, Malgorzata J.
name: Malarz, Krzysztof
name: Snarska, Malgorzata
Publisher: name: arXiv
Year: 2021
Subjects: subject: Theoretical Economics (econ.TH)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We study wealth rank correlations in a simple model of macro-economy. To quantify rank correlations between wealth rankings at different times, we use Kendall's $τ$ and Spearman's $ρ$, Goodman--Kruskal's $γ$, and the lists' overlap ratio. We show that the dynamics of wealth flow and the speed of reshuffling in the ranking list depend on parameters of the model controlling the wealth exchange rate and the wealth growth volatility. As an example of the rheology of wealth in real data, we analyze the lists of the richest people in Poland, Germany, the USA and the world.
description: 13 pages, 5 figures, for "Entropy and Social Physics", https://www.mdpi.com/journal/entropy/special_issues/Social_Physics
Internal sets and internal functions in Colombeau theory
Creators: name: Oberguggenberger, M.
name: Vernaeve, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46F30 (Primary), 46S20 (Secondary)

description: Inspired by nonstandard analysis, we define and study internal subsets and internal functions in algebras of Colombeau generalized functions. We prove a saturation principle for internal sets and provide applications to Colombeau algebras.
Structural relaxation around substitutional Cr3+ in MgAl2O4
Creators: name: Juhin, Amélie
name: Calas, Georges
name: Cabaret, Delphine
name: Galoisy, Laurence
name: Hazemann, Jean-Louis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural environment of substitutional Cr3+ ion in MgAl2O4 spinel has been investigated by Cr K-edge Extended X-ray Absorption Fine Structure (EXAFS) and X-ray Absorption Near Edge Structure (XANES) spectroscopies. First-principles computations of the structural relaxation and of the XANES spectrum have been performed, with a good agreement to the experiment. The Cr-O distance is close to that in MgCr2O4, indicating a full relaxation of the first neighbors, and the second shell of Al atoms relaxes partially. These observations demonstrate that Vegard's law is not obeyed in the MgAl2O4-MgCr2O4 solid solution. Despite some angular site distortion, the local D3d symmetry of the B-site of the spinel structure is retained during the substitution of Cr for Al. Here, we show that the relaxation is accomodated by strain-induced bond buckling, with angular tilts of the Mg-centred tetrahedra around the Cr-centred octahedron. By contrast, there is no significant alteration of the angles between the edge-sharing octahedra, which build chains aligned along the three four-fold axes of the cubic structure.
description: 7 pages, 4 figures
An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence
Creators: name: Cornelisse, R.
name: Wijnands, R.
name: Homan, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed the neutron star X-ray transient 2S 1803-245 in quiescence with the X-ray satellite XMM-Newton, but did not detect it. An analysis of the X-ray bursts observed during the 1998 outburst of 2S 1803-245 gives an upper-limit to the distance of <7.3 kpc, leading to an upper-limit on the quiescent 0.5-10 keV X-ray luminosity of <2.8x10^32 erg/s (3sigma). Since the expected orbital period of 2S 1803-245 is several hrs, this limit is not much higher than those observed for the quiescent black hole transients with similar orbital periods.
description: 5 pages, 3 figures, accepted for publication in MNRAS
Die Gewerkschaften in der französischen Politik der Gegenwart
Creators: name: Wurm, Clemens A.
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Die Gewerkschaften in der französischen Politik der Gegenwart" of MTS 7 (1984).
description: Moving the Social, Vol 7 (1984): Forschungen und Forschungsberichte
A Hierarchical Approach for Dependability Analysis of a Commercial Cache-Based RAID Storage Architecture
Creators: name: Kaaniche, Mohamed
name: Romano, Luigi
name: Kalbarczyk, Zbigniew
name: Iyer, Ravishankar
name: Karcich, Rick
Publisher: name: arXiv
Year: 2007
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: We present a hierarchical simulation approach for the dependability analysis and evaluation of a highly available commercial cache-based RAID storage system. The archi-tecture is complex and includes several layers of overlap-ping error detection and recovery mechanisms. Three ab-straction levels have been developed to model the cache architecture, cache operations, and error detection and recovery mechanism. The impact of faults and errors oc-curring in the cache and in the disks is analyzed at each level of the hierarchy. A simulation submodel is associated with each abstraction level. The models have been devel-oped using DEPEND, a simulation-based environment for system-level dependability analysis, which provides facili-ties to inject faults into a functional behavior model, to simulate error detection and recovery mechanisms, and to evaluate quantitative measures. Several fault models are defined for each submodel to simulate cache component failures, disk failures, transmission errors, and data errors in the cache memory and in the disks. Some of the parame-ters characterizing fault injection in a given submodel cor-respond to probabilities evaluated from the simulation of the lower-level submodel. Based on the proposed method-ology, we evaluate and analyze 1) the system behavior un-der a real workload and high error rate (focusing on error bursts), 2) the coverage of the error detection mechanisms implemented in the system and the error latency distribu-tions, and 3) the accumulation of errors in the cache and in the disks.
Stochastic action principle and maximum entropy
Creators: name: Wang, Q. A.
name: Tsobnang, F.
name: Bangoup, S.
name: Dzangue, F.
name: Jeatsa, A.
name: Méhauté, A. Le
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A stochastic action principle for stochastic dynamics is revisited. We present first numerical diffusion experiments showing that the diffusion path probability depend exponentially on average Lagrangian action. This result is then used to derive an uncertainty measure defined in a way mimicking the heat or entropy in the first law of thermodynamics. It is shown that the path uncertainty (or path entropy) can be measured by the Shannon information and that the maximum entropy principle and the least action principle of classical mechanics can be unified into a concise form. It is argued that this action principle, hence the maximum entropy principle, is simply a consequence of the mechanical equilibrium condition extended to the case of stochastic dynamics.
description: This work is a further development of the idea proposed in the paper cond-mat/0407515, 15 pages
Convergent validity of three measures of attention-hyperactivity disorder among children with food allergies
Creators: name: Bidgood, Wendy Jean
Publisher: name: University of British Columbia
Year: 2010

description: The aim of the present study was to determine the convergent validity of three instruments thought to assess attention deficits and hyperactivity in children. The Freedom from Distractibility factor from the Wechsler Intelligence Scale for Children-Revised, The Conners Parent Symptom Questionnaire and the Gordon Diagnostic System were the instruments chosen for the investigation as they are thought to measure attention deficits across a variety of settings and by different means. To examine the relationship, responses were collected for 36 children (26 males, 10 females) in Grades 1 to 7 attending schools in the Lower Mainland of British Columbia and who according to parent reports exhibited behavior patterns similar to the descriptions needed for the diagnosis of Attention Deficit-Hyperactivity Disorder. Results of the analyses are inclusive and need to be followed up in subsequent research. The WISC-R provides a valid and reliable measure of general cognitive ability. Two subtests from the WISC-R, Coding and Digit Span appeared to measure attention, however the Freedom from Distractibility Quotient should not be utilized as a measure of attention. Learning Problems and the Hyperactivity Index on the Conners Parent Symptom Questionnaire also serve as measures of attention. In a more general sense the Conners Parent Symptom Questionnaire might be a useful contribution to an assessment battery as a description of a child's behavior from a parent's point of view and as such provides an ecological assessment of behavior. It also allows one to measure behavior over time. The Vigilance and Distractibility total correct and errors of commission would appear to be measures of attention while the Delay task failed to classify the children according to the behavior objectives set out by the study.
Mid-infrared homodyne balanced detector for quantum light characterization
Creators: name: Gabbrielli, Tecla
name: Cappelli, Francesco
name: Bruno, Natalia
name: Corrias, Nicola
name: Borri, Simone
name: De Natale, Paolo
name: Zavatta, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the characterization of a novel balanced homodyne detector operating in the mid-infrared. The challenging task of revealing non-classicality in mid-infrared light, e.~g. in quantum cascade lasers emission, requires a high-performance detection system. Through the intensity noise power spectral density analysis of the differential signal coming from the incident radiation, we show that our setup is shot-noise limited. We discuss the experimental results with a view to possible applications to quantum technologies, such as free-space quantum communication.
description: 15 pages, 6 figures
Regression Networks For Calculating Englacial Layer Thickness
Creators: name: Varshney, Debvrat
name: Rahnemoonfar, Maryam
name: Yari, Masoud
name: Paden, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ice thickness estimation is an important aspect of ice sheet studies. In this work, we use convolutional neural networks with multiple output nodes to regress and learn the thickness of internal ice layers in Snow Radar images collected in northwest Greenland. We experiment with some state-of-the-art networks and find that with the residual connections of ResNet50, we could achieve a mean absolute error of 1.251 pixels over the test set. Such regression-based networks can further be improved by embedding domain knowledge and radar information in the neural network in order to reduce the requirement of manual annotations.
On Connected Diagrams and Cumulants of Erdos-Renyi Matrix Models
Creators: name: Khorunzhiy, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 15A52

description: Regarding the adjacency matrices of n-vertex graphs and related graph Laplacian, we introduce two families of discrete matrix models constructed both with the help of the Erdos-Renyi ensemble of random graphs. Corresponding matrix sums represent the characteristic functions of the average number of walks and closed walks over the random graph. These sums can be considered as discrete analogs of the matrix integrals of random matrix theory. We study the diagram structure of the cumulant expansions of logarithms of these matrix sums and analyze the limiting expressions in the cases of constant and vanishing edge probabilities as n tends to infinity.
description: 34 pages, 8 figures
Recovering point sources for the inhomogeneous Helmholtz equation
Creators: name: Bao, Gang
name: Liu, Yuantong
name: Triki, Faouzi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The paper is concerned with an inverse point source problem for the Helmholtz equation. It consists of recovering the locations and amplitudes of a finite number of radiative point sources inside a given inhomogeneous medium from the knowledge of a single boundary measurement. The main result of the paper is a new Hölder type stability estimate for the inversion under the assumption that the point sources are well separated. The proof of the stability is based on a combination of Carleman estimates and a technique for proving uniqueness of the Cauchy problem.
Dissent Allowed: Widening discussions about Open Research
Creators: name: Higman, Rosie
Publisher: name: Apollo - University of Cambridge Repository
Year: 2017

description: Rosie Higman, University of Manchester, discusses providing researchers with the opportunity to present and share their own Open Research tales. Lightning talk delivered at the Engaging Researchers with Good Data Management event held at St Catharine's College, Cambridge on the 15th of November 2017
Constraining the Dark Energy Equation of State with Cosmic Voids
Creators: name: Lee, Jounghun
name: Park, Daeseong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Our universe is observed to be accelerating due to the dominant dark energy with negative pressure. The dark energy equation of state (w) holds a key to understanding the ultimate fate of the universe. The cosmic voids behave like bubbles in the universe so that their shapes must be quite sensitive to the background cosmology. Assuming a flat universe and using the priors on the matter density parameter (Omega_m) and the dimensionless Hubble parameter (h), we demonstrate analytically that the ellipticity evolution of cosmic voids may be a sensitive probe of the dark energy equation of state. We also discuss the parameter degeneracy between w and Omega_m.
description: ApJL in press, growth factor corrected, parameter degeneracy calculated
Debris avalanche and debris torrent initiation, Whatcom County, Washington, U.S.A.
Creators: name: Buchanan, Peter
Publisher: name: University of British Columbia
Year: 2010

description: Heavy rainfall on the evening of January 9 and morning of January 10, 1983 triggered debris avalanches and debris torrents at Smith Creek, western Whatcom County, Washington, USA. Nine debris avalanches are back analyzed in detail. Conclusions are drawn concerning, 1) climatic controls on debris avalanches and debris torrents; 2) debris avalanche characteristics; 3) hillslope hydrology; 4) slope stability. Rainfall data show that the January 9-10, 1983 storm had a 71-year recurrence interval in the 12-hour duration, with less than 6-year recurrence intervals in 1, 2, and 3-hour durations. In contrast, rainfall during a torrent event on January 29-30, 1971 had recurrence intervals of less than 2 years in all durations, but snowmelt was a contributing factor. The types of debris torrents produced by these contrasting storms are discussed. Four distinct failure geometries are defined, based on avalanche descriptions: 1) wedges; 2) drainage depressions; 3) logging roads; 4) discontinuity surfaces. Three scour zones are also distinguished, based on slope segment types observed. To model storm water table levels a one-dimensional, vertical, transient, saturated-unsaturated finite difference infiltration program is linked to a kinematic wave equation. Rainfall duration and intensity, initial conditions, soil hydraulic conductivity, and soil depth are factors controlling vertical soil discharge rates. January, 1983 discharges are clearly distinguishable from comparison storm discharges at all avalanches. Kinematic wave results help differentiate Coulomb shear and washout type failures, and provide pore pressures for stability analyses. The modified Mohr-Coulomb strength equation is used to outline factors controlling debris avalanche initiation. The factors are: 1) slope angle; 2) soil depth; 3) soil density; 4) vegetative cover; 5) bedrock surface characteristics; 6) snow. These factors are quantitatively assessed. Infinite slope analyses show limiting slope angles of 29.7° for Group I vegetation, and 24.6° for Group III vegetation. Vegetative cover and soil depth are the two controlling factors that change significantly over the short term. A root cohesion parameter, Cr, is used to assess the shear strength provided by vegetation. Four vegetative covers are distinguished, three of which were logged between 1918 and 1950: Group I - relatively weak understory vegetation (Cr range: 1.6 -2.0 kPa); Group II - understory plus stunted trees (Cr range: 2.3 - 2.6 kPa); Group III - understory plus mixed, regenerating forest (Cr range: 2.6 - 3.0 kPa); Group IV - old-growth forest of higher root strength.
Eigenvalue Bounds for Perturbations of Schrodinger Operators and Jacobi Matrices With Regular Ground States
Creators: name: Frank, Rupert L.
name: Simon, Barry
name: Weidl, Timo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35P15, 47B36, 81Q10

description: We prove general comparison theorems for eigenvalues of perturbed Schrodinger operators that allow proof of Lieb--Thirring bounds for suitable non-free Schrodinger operators and Jacobi matrices.
description: 11 pages
A Spreader-Bar Approach to Molecular Architecture: Formation of Stable Artificial Chemoreceptors
Creators: name: Mirsky, Vladimir M.
name: Hirsch, Thomas
name: Piletsky, Sergey A.
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: Molecular architecture; Molecular recognition; Monolayers; Nanostructures; Sensors
subject: 540 Chemie

description: The destructive influence of lateral diffusion on nanostructured monolayers can be prevented by using the spreader-bar technique. This approach allows the formation of stable artificial receptors for barbituric acid by lateral structuring of a dodecanethiol monolayer with molecular spreader-bars from thiobarbituric acid without chemical polymerization (see schematic representation). The new technique may have applications in chemosensors, affinity chromatography, stereoselective catalysis, and molecular electronics.
The census of nuclear activity of late-type galaxies in the Virgo cluster
Creators: name: Decarli, R.
name: Gavazzi, G.
name: Arosio, I.
name: Cortese, L.
name: Boselli, A.
name: Bonfanti, C.
name: Colpi, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first spectroscopic census of AGNs associated to late-type galaxies in the Virgo cluster is carried on by observing 213 out of a complete set of 237 galaxies more massive than M_dyn>10^{8.5} solar masses. Among them, 77 are classified as AGNs (including 21 transition objects, 47 LINERs and 9 Seyferts), and comprize 32% of the late-type galaxies in Virgo. Due to spectroscopic incompleteness at most 21 AGNs are missed in the survey, so that the fraction would increase up to 41%. Using corollary Near-IR observations, that enable us to estimate galaxies dynamical masses, it is found that AGNs are hosted exclusively in massive galaxies, i.e. M_dyn\gsim 10^{10} solar masses. Their frequency increases steeply with the dynamical mass from zero at M_dyn\approx10^{9.5} solar masses to virtually 1 at M_dyn>10^{11.5} solar masses. These frequencies are consistent with the ones of low luminosity AGNs found in the general field by the SDSS. Massive galaxies that harbor AGNs commonly show conspicuous r-band star-like nuclear enhancements. Conversely they often, but not necessarily contain massive bulges. Few well known AGNs (e.g. M61, M100, NGC4535) are found in massive Sc galaxies with little or no bulge. The AGN fraction seems to be only marginally sensitive to galaxy environment. We infer the black hole masses using the known scaling relations of quiescent black holes. No black holes lighter than $\sim 10^6$ \msol are found active in our sample.
description: The paper contains 13 figures and 5 tables; accepted for publication in MNRAS
Gauge-Higgs Unification and LHC/ILC
Creators: name: Hosotani, Yutaka
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the gauge-Higgs unification scenario the 4D Higgs field is identified with the zero mode of the extra-dimensional component of gauge potentials. The mass of the Higgs particle in the unification in the Randall-Sundrum warped spacetime is predicted to be in the range 100 GeV - 300 GeV. The WWZ gauge couplings remains almost universal as in the standard model, but substantial deviation results for the Higgs couplings. The WWH and ZZH couplings are suppressed by a factor \cos θ_H from the values in the standard model, where θ_H is the Yang-Mills AB phase along the fifth dimension. These can be tested at LHC and ILC.
description: 16 pages. Proceeding for SCGT2006 (Nagoya, Nov. 2006)
Extension theorems of Sakai type for separately holomorphic and meromorphic functions
Creators: name: Pflug, Peter
name: Nguyen, Viet-Anh
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32D15, 32D10

description: We first exhibit counterexamples to some open questions related to a theorem of Sakai. Then we establish an extension theorem of Sakai type for separately holomorphic/meromorphic functions.
Full dimensional (15D) quantum-dynamical simulation of the protonated water-dimer I: Hamiltonian setup and analysis of the ground vibrational state
Creators: name: Vendrell, Oriol
name: Gatti, Fabien
name: Lauvergnat, David
name: Meyer, Hans-Dieter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Quantum-dynamical full-dimensional (15D) calculations are reported for the protonated water dimer (H5O2+) using the multiconfiguration time-dependent Hartree (MCTDH) method. The dynamics is described by curvilinear coordinates. The expression of the kinetic energy operator in this set of coordinates is given and its derivation, following the polyspherical method, is discussed. The PES employed is that of Huang et al. [JCP, 122, 044308, (2005)]. A scheme for the representation of the potential energy surface (PES) is discussed which is based on a high dimensional model representation scheme (cut-HDMR), but modified to take advantage of the mode-combination representation of the vibrational wavefunction used in MCTDH. The convergence of the PES expansion used is quantified and evidence is provided that it correctly reproduces the reference PES at least for the range of energies of interest. The reported zero point energy of the system is converged with respect to the MCTDH expansion and in excellent agreement (16.7 cm-1 below) with the diffusion Monte Carlo result on the PES of Huang et al. The highly fluxional nature of the cation is accounted for through use of curvilinear coordinates. The system is found to interconvert between equivalent minima through wagging and internal rotation motions already when in the ground vibrational-state, i.e., T=0. It is shown that a converged quantum-dynamical description of such a flexible, multi-minima system is possible.
description: 46 pages, 5 figures, submitted to J. Chem. Phys
Catalytic activity of chiral chelating N-heterocyclic carbene palladium complexes towards asymmetric allylic alkylation
Creators: name: Yang, Liangru
name: Li, Yunfei
name: Mao, Pu
name: Yuan, Jinwei
name: Xiao, Yongmei
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: The catalytic activity of a series of chiral heteroaryl coordinated chelating N-heterocyclic carbene (NHC) palladium complexes towards asymmetric allylic alkylation (AAA) were presented here. The effects of different N-substituents, NHC backbones and chelate rings on the catalytic activity and the enantioselectivity of the alkylation of (E)-1,3-diarylallyl acetates with dialkyl malonate were investigated. The results showed that, under the optimized conditions, complexes 3a, 3b, and 3i carrying the pyridinyl-coordinated five-membered chelate ring showed high catalytic activity and chiral induction efficiency. The corresponding alkylated products were obtained in high yields with moderate ee. Furthermore, it was found that the substituents of (E)-1,3-diarylallyl acetates and the type of the nucleophile affect the results as well.
Aussperrungen in der Bundesrepublik 1949 - 1973: eine Übersicht
Creators: name: Kalbitz, Rainer
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Aussperrungen in der Bundesrepublik 1949 - 1973: eine Übersicht" of MTS 8 (1987).
description: Moving the Social, Vol 8 (1987): Forschungen und Forschungsberichte
วิเคราะห์ต้นทุนและผลตอบแทนการปลูกข้าวเจ้านาปีในจังหวัดกำแพงเพชรปีการผลิต 2553/2554
Creators: name: สมเกียรติ ชัยพิบูลย์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: ต้นทุน, ผลตอบแทน, ประสิทธิภาพการผลิต

description: 2, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
การพัฒนาศักยภาพของชุมชนในการจัดการการท่องเที่ยวบึงบอระเพ็ด  จังหวัดนครสวรรค์
Creators: name: อุทัยวรรณ  ภู่เทศ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: การพัฒนาศักยภาพของชุมชน, การจัดการการท่องเที่ยว

description: 2, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Propolis ethanolic extract has double-face in vitro effect on the planktonic growth and biofilm formation of some commercial probiotics
Creators: name: Alfarrayeh, Ibrahim
name: Fekete, Csaba
name: Zoltan Gazdag
name: Papp, Gábor
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: This study investigated the in vitro effect of propolis ethanolic extract (PEE) on planktonic growth and biofilm forming abilities of five commercial probiotics (Enterol, Protexin, Normaflore, BioGaia and Linex). Broth microdilution method was used to investigate the susceptibility of the microbes of five commercial probiotics to PEE. Crystal violet assay was used for the quantitative assessment of biofilm formation and mature biofilm eradication tests. Effect of PEE on autoaggregation ability and swarming motility of Normaflore microbes was determined. Planktonic forms of probiotics showed varied susceptibilities with minimal inhibitory concentration values in the range of 100-800 µg/mL of PEE. However, low PEE concentrations significantly enhanced the planktonic growth of Linex and BioGaia microbes. Biofilm studies revealed that Enterol and Protexin were non-biofilm formers, while BioGaia, Linex and Normaflore showed weak biofilms, which were inhibited by 12.5, 25, and 800 µg/mL of PEE, respectively. PEE revealed double-face effect on the biofilms of Normaflore and Linex, which were enhanced at low concentrations of PEE and inhibited at higher concentrations. Interestingly, Normaflore biofilms were shifted from weak to strong biofilms at low PEE concentrations (12.5, 25, and 50 µg/mL). In conclusion, PEE has strain dependent controversial effects on the planktonic growth and biofilm forming ability of the tested probiotics, although high concentrations have inhibitory effect on all of them, low concentrations may have strain dependent prebiotic effect.
Parallel, Series, and Intermediate Interconnections of Optical Nanocircuit Elements Part 1: Analytical Solution
Creators: name: Salandrino, Alessandro
name: Alu, Andrea
name: Engheta, Nader
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Following our recent development of the paradigm for extending the classic concepts of circuit elements to the infrared and optical frequencies [N. Engheta, A. Salandrino, A. Alu, Phys. Rev. Lett. 95, 095504 (2005)], in this paper we investigate the possibility of connecting nanoparticles in series and in parallel configurations, acting as nanocircuit elements, In particular, we analyze a pair of conjoined half-cylinders, whose relatively simple geometry may be studied and analyzed analytically. In this first part of the work, we derive a closed-form quasi-static analytical solution of the boundary-value problem associated with this geometry, which will be applied in Part II for a nanocircuit and physical interpretation of these results.
description: 21 pages, 5 figures
ความต้องการและแนวทางการพัฒนาบุคลากรคณะสัตวแพทยศาสตร์ มหาวิทยาลัยขอนแก่น
Creators: name: สมบัติ แสงพล
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: ความต้องการ, แนวทางการพัฒนา, บุคลากรคณะสัตวแพทยศาสตร์, มหาวิทยาลัยขอนแก่น

description: 3, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Lower bounds for the conductivities of correlated quantum systems
Creators: name: Jung, Peter
name: Rosch, Achim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show how one can obtain a lower bound for the electrical, spin or heat conductivity of correlated quantum systems described by Hamiltonians of the form H = H0 + g H1. Here H0 is an interacting Hamiltonian characterized by conservation laws which lead to an infinite conductivity for g=0. The small perturbation g H1, however, renders the conductivity finite at finite temperatures. For example, H0 could be a continuum field theory, where momentum is conserved, or an integrable one-dimensional model while H1 might describe the effects of weak disorder. In the limit g to 0, we derive lower bounds for the relevant conductivities and show how they can be improved systematically using the memory matrix formalism. Furthermore, we discuss various applications and investigate under what conditions our lower bound may become exact.
description: Title changed; 9 pages, 2 figures
Sharply transitive sets in $\mathrm{PGL}_2(K)$
Creators: name: Eberhard, Sean
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20B99

description: Here is a simplified proof that every sharply transitive subset of $\mathrm{PGL}_2(K)$ is a coset of a subgroup.
description: 3 pages. Referee's comments incorporated
Parallel, Series, and Intermediate Interconnections of Optical Nanocircuit Elements Part 2: Nanocircuit and Physical Interpretation
Creators: name: Alu, Andrea
name: Salandrino, Alessandro
name: Engheta, Nader
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Applying the analytical closed-form solutions of the 'quasi-static' potential distribution around two conjoined resonant half-cylinders with different permittivities, reported in the first part of our manuscript, here we interpret these results in terms of our nanocircuit paradigm applicable to nanoparticles at infrared and optical frequencies [N. Engheta, A. Salandrino, A. Alu, Phys. Rev. Lett. 95, 095504 (2005)]. We investigate the possibility of connecting in series and parallel configurations plasmonic and/or dielectric nanoparticles acting as nanocircuit elements, with a goal for the design of a more complex nanocircuit circuit system with the desired response. The present analysis fully validates the heuristic predictions regarding the parallel and series combination of a pair of nanocircuit elements. Moreover, the geometries under analysis present interesting peculiar features in their wave interaction, such as the intermediate stage between the parallel and series configurations, which may be of interest for certain applications. In particular, the resonant nanocircuit configuration analyzed here may dramatically change, in a continuous way, its effective total impedance by simply rotating its orientation with respect to the polarization of the impressed optical electric field, providing a novel optical nanodevice that may alter its function by rotation with respect to the impressed optical local field.
description: 27 pages, 7 figures
Propolis ethanolic extract has double-face in vitro effect on the planktonic growth and biofilm formation of some commercial probiotics
Creators: name: Alfarrayeh, Ibrahim
name: Papp, Gábor
name: Fekete, Csaba
name: Zoltan Gazdag
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: This study investigated the in vitro effect of propolis ethanolic extract (PEE) on planktonic growth and biofilm forming abilities of five commercial probiotics (Enterol, Protexin, Normaflore, BioGaia and Linex). Broth microdilution method was used to investigate the susceptibility of the microbes of five commercial probiotics to PEE. Crystal violet assay was used for the quantitative assessment of biofilm formation and mature biofilm eradication tests. Effect of PEE on autoaggregation ability and swarming motility of Normaflore microbes was determined. Planktonic forms of probiotics showed varied susceptibilities with minimal inhibitory concentration values in the range of 100-800 µg/mL of PEE. However, low PEE concentrations significantly enhanced the planktonic growth of Linex and BioGaia microbes. Biofilm studies revealed that Enterol and Protexin were non-biofilm formers, while BioGaia, Linex and Normaflore showed weak biofilms, which were inhibited by 12.5, 25, and 800 µg/mL of PEE, respectively. PEE revealed double-face effect on the biofilms of Normaflore and Linex, which were enhanced at low concentrations of PEE and inhibited at higher concentrations. Interestingly, Normaflore biofilms were shifted from weak to strong biofilms at low PEE concentrations (12.5, 25, and 50 µg/mL). In conclusion, PEE has strain dependent controversial effects on the planktonic growth and biofilm forming ability of the tested probiotics, although high concentrations have inhibitory effect on all of them, low concentrations may have strain dependent prebiotic effect.
Physiotherapy provided for patients undergoing thoracic surgery in Sweden – a national survey of practice
Creators: name: Jonsson, Marcus
name: Westerdahl, Elisabeth
name: Reeve, Julie
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy

description: Patients undergoing thoracic surgery commonly receive perioperative physio-therapy, typically consisting of education, mobilization, breathing exercises, and mobility exercises. To date, no study has described physiotherapy practice for patients undergoing thoracic surgery in Sweden. To investigate physiotherapy interventions for patients undergoing thoracic surgery in Sweden. All physiotherapists currently working in thoracic surgery units in Sweden (n = 8) were eligible to participate. A survey was e-mailed to the physiotherapists, to determine physiotherapy interventions offered to patients undergoing thoracoscopy or open thoracic surgery. Of 21 physiotherapists, 13 (62%) responded, representing seven hospitals. Physiotherapists reported routinely providing preoperative education and postoperative treatment for all patients undergoing thoracic surgery. Breathing exercises and mobilization were usually initiated on the day of surgery or the first postoperative day. Common treatments were deep breathing exercises, with or without positive expiratory pressure, and airway clearance techniques. Upper limb and shoulder exercises were typically initiated on the first or second day after surgery. The most important factor reported to influence treatment choice was personal experience of the attending physiotherapist. No routine post-discharge rehabilitation was provided. Physiotherapists in Sweden reported routinely treating patients scheduled for thoracic surgery, both pre and postoperatively. Prehabilitation or post-discharge rehabilitation was not routinely provided.
The views and experiences of people with myeloma referred for autologous stem cell transplantation, who declined to participate in a physiotherapist-led exercise trial: a qualitative study
Creators: name: McCourt, Orla
name: Fisher, Abigail
name: Land, Joanne
name: Ramdharry, Gita
name: Yong, Kwee
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Recruitment rates to rehabilitation trials are variable among cancer survivors, and deeper investigation into the causes for declining participation is needed. The aim of this study was to qualitatively explore the experiences of people with myeloma referred for autologous stem cell transplant who were approached to take part in a physiotherapist-led exercise trial but declined. Participants were asked to participate in this qualitative study after declining to participate in a trial conducted at a UK tertiary cancer center. Semi-structured interviews were conducted. Data was analyzed inductively using reflexive thematic analysis. Interviews from 18 myeloma patients (56% male, mean age 62 years) were analyzed. Four themes were identified: 1) Traveling to the specialist center is challenging, not just logistically; 2) Individualized approach valued but recall of research information variable; 3) Being less active has profound impact yet ameliorative support is lacking; and 4) Common side-effects of treatment are expected and endured but personal impact underestimated and unaddressed. A number of barriers to participation were identified. Travel, a commonly cited reason for declining research participation, is more than a logistical issue for cancer survivors experiencing side-effects and the time burden of clinical appointments. Expectation or knowledge of the typical side-effects from myeloma and its treatment may lead to under-reporting of concerns to care providers, despite their impact upon daily activities and quality of life. Approaches used for research recruitment should consider the timing and consequences of ongoing cancer treatment to reduce potential barriers to participation.
Full dimensional (15D) quantum-dynamical simulation of the protonated water-dimer II: infrared spectrum and vibrational dynamics
Creators: name: Vendrell, Oriol
name: Gatti, Fabien
name: Meyer, Hans-Dieter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The infrared absorption spectrum of the protonated water dimer (H5O2+) is simulated in full dimensionality (15D) in the spectral range 0-4000 cm-1. The calculations are performed using the Multiconfiguration Time-Dependent Hartree (MCTDH) method for propagation of wavepackets. All the fundamentals and several overtones of the vibrational motion are computed. The spectrum of H5O2+ is shaped to a large extent by couplings of the proton-transfer motion to large amplitude fluxional motions of the water molecules, water bending and water-water stretch motions. These couplings are identified and discussed, and the corresponding spectral lines assigned. The large couplings featured by H5O2+ do not hinder, however, to describe the coupled vibrational motion by well defined simple types of vibration (stretching, bending, etc.) based on well defined modes of vibration, in terms of which the spectral lines are assigned. Comparison of our results to recent experiments and calculations on the system is given. The reported MCTDH IR-spectrum is in very good agreement to the recently measured spectrum by Hammer et al. [JCP, 122, 244301, (2005)].
description: 30 pages, 6 figures, submitted to J. Chem. Phys
NMR evidence for a strong modulation of the Bose-Einstein Condensate in BaCuSi$_2$O$_6$
Creators: name: Kramer, S.
name: Stern, R.
name: Horvatic, M.
name: Berthier, C.
name: Kimura, T.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a $^{63,65}$Cu and $^{29}$Si NMR study of the quasi-2D coupled spin 1/2 dimer compound BaCuSi$_2$O$_6$ in the magnetic field range 13-26 T and at temperatures as low as 50 mK. NMR data in the gapped phase reveal that below 90 K different intra-dimer exchange couplings and different gaps ($Δ_{\rm{B}}/Δ_{\rm{A}}$ = 1.16) exist in every second plane along the c-axis, in addition to a planar incommensurate (IC) modulation. $^{29}$Si spectra in the field induced magnetic ordered phase reveal that close to the quantum critical point at $H_{\rm{c1}}$ = 23.35 T the average boson density $\bar{n}$ of the Bose-Einstein condensate is strongly modulated along the c-axis with a density ratio for every second plane $\bar{n}_{\rm{A}}/\bar{n}_{\rm{B}} \simeq 5$. An IC modulation of the local density is also present in each plane. This adds new constraints for the understanding of the 2D value $ϕ$ = 1 of the critical exponent describing the phase boundary.
Zero-temperature behavior of the random-anisotropy model in the strong-anisotropy limit
Creators: name: Liers, Frauke
name: Lukic, Jovanka
name: Marinari, Enzo
name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the random-anisotropy model on the square and on the cubic lattice in the strong-anisotropy limit. We compute exact ground-state configurations, and we use them to determine the stiffness exponent at zero temperature; we find $θ= -0.275(5)$ and $θ\approx 0.2$ respectively in two and three dimensions. These results show that the low-temperature phase of the model is the same as that of the usual Ising spin-glass model. We also show that no magnetic order occurs in two dimensions, since the expectation value of the magnetization is zero and spatial correlation functions decay exponentially. In three dimensions our data strongly support the absence of spontaneous magnetization in the infinite-volume limit.
Solid waste open dumpsite mining in India and sustainable deployment through circular economy
Creators: name: Krishnan, Ramesh Bhagavathi
name: Sharma, Naresh Kumar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: There are about 3159 open dump sites in India, which cause severe environmental pollution and are a danger to public health. This study demonstrates that the embedded resources in these dumpsites can be recovered profitably. The paper surveys the excavation, segregation, re-cycling and re-use of an open dumpsite containing legacy waste, at a cost of 8 $/m3 of rubbish, recovered, incinerable and inert fractions. A land reclamation of 3.16 ha yielding 1048 tonnes of refuse-derived fuel was achieved. This study demonstrates that dumpsite mining can be profitable while preventing the environmental hazards caused by existing waste dump sites in most Indian cities.
Hydrodynamics and risk analysis of iceberg impacts with offshore structures
Creators: name: McTaggart, Kevin Andrew
Publisher: name: University of British Columbia
Year: 2011

description: The evaluation of design iceberg impact loads for offshore structures and the influence of hydrodynamic effects on impact loads are examined. Important hydrodynamic effects include iceberg added mass, wave-induced oscillatory iceberg motions, and the influence of a large structure on the surrounding flow field and subsequent velocities of approaching icebergs. The significance of these phenomena has been investigated using a two-body numerical diffraction model and through a series of experiments modelling the drift of various sized icebergs driven by waves and currents approaching a large offshore structure. Relevant findings from the hydrodynamic studies have been incorporated into two probabilistic models which can be used to determine design iceberg collision events with a structure based on either iceberg kinetic energy upon impact or global sliding force acting on the structure. Load exceedence probabilities from the kinetic energy and sliding force models are evaluated using the second-order reliability method. Output from the probabilistic models can be used to determine design collision parameters and to assess whether more sophisticated modelling of various impact processes is required. The influence of the structure on velocities of approaching icebergs is shown to be significant when the structure horizontal dimension is greater than twice the iceberg dimension. As expected, wave-induced oscillatory motions dominate the collision velocity for smaller icebergs but have a negligible effect on velocity for larger icebergs.