cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Energy Cascades in Astrophysical Plasma
Creators: name: Shaikh, Dastgeer
name: Zank, Gary P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A local turbulence model is developed to study energy cascades in the interstellar medium (ISM) based on self-consistent two-dimensional fluid simulations. The model describes a partially ionized magnetofluid interstellar medium (ISM) that couples a neutral hydrogen fluid with a plasma primarily through charge exchange interactions. Charge exchange interactions are ubiquitous in warm ISM plasma and the strength of the interaction depends largely on the relative speed between the plasma and the neutral fluid. Unlike small length-scale linear collisional dissipation in a single fluid, charge exchange processes introduce channels that can be effective on a variety of length-scales that depend on the neutral and plasma densities, temperature, relative velocities, charge exchange cross section and the characteristic length scales. We find, from scaling arguments and nonlinear coupled fluid simulations, that charge exchange interactions modify spectral transfer associated with large scale energy containing eddies. Consequently, the warm ISM turbulent cascade rate prolongs spectral transfer amongst inertial range turbulent modes. Turbulent spectra associated with the neutral and plasma ISM fluids are therefore steeper than those predicted by Kolmogorov's phenomenology.
description: Paper is accepted in Astrophysical Journal
Near-field energy transfer between graphene and magneto-optic media
Creators: name: Tang, Gaomin
name: Zhang, Lei
name: Zhang, Yong
name: Chen, Jun
name: Chan, C. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the near-field radiative energy transfer between two separated parallel plates: graphene supported by a substrate and a magneto-optic medium. We first study the scenario in which the two plates have the same temperature. An electric current through the graphene gives rise to nonequilibrium fluctuations and induces energy transfer. Both the magnitude and direction of the energy flux can be controlled by the electric current and an in-plane magnetic field in the magneto-optic medium. This is due to the interplay between the nonreciprocal photon occupation number in the graphene and nonreciprocal surface modes in the magneto-optic plate. Furthermore, we report that a tunable thermoelectric current can be generated in the graphene in the presence of a temperature difference between the two plates.
description: 5.5+2 pages, 4+2 figures
DEVELOPING GENERAL CULTURAL COMPETENCIES OF PRESCHOOL EDUCATION TEACHERS BASED ON STEAM TECHNOLOGIES
Creators: name: Saidova, N.O.
name: Juraeva, N.R.
name: Pirmatova, Z.E.
Publisher: name: Zenodo
Year: 2025

description: This article explores the integration of STEAM (Science, Technology, Engineering, Arts, and Mathematics) technologies in preschool education to enhance general cultural competencies among teachers. It presents an overview of innovative pedagogical approaches such as Project-Based Learning (PjBL), Universal Design for Learning (UDL), LEGO Education, interactive technologies, and multisensory models. These methods have demonstrated significant improvements in teachers' critical thinking, creativity, inclusiveness, and problem-solving skills. Through literature analysis and case studies, the paper highlights effective models and strategies for teacher development, emphasizing the importance of structured training, cultural adaptability, and continuous professional development. The findings support the adoption of STEAM methodologies to create engaging, inclusive learning environments that prepare educators and children for 21st-century challenges.
MS275 displayed therapeutic potential on malignant ascites
Creators: name: 杜丽(Li Du)
Publisher: name: CNGB
Year: 2021
Subjects: Proteome
Multiisolate
Medical

description: This present research revealed that the class I selective HDAC inhibitor, MS275, could effectively inhibit malignant ascites development and tumor growth via multiple pathways. These results indicated that HDACI could have great potential for clinical therapy of malignant ascites.
A school district resource centre based implementation strategy for the visual arts component of the 1985 BC elementary fine arts curriculum
Creators: name: McKnight, Jennifer Marie
Publisher: name: University of British Columbia
Year: 2010

description: This study examines a British Columbia school district's elementary art and instructional media programs and the role the District Resource Center plays in their implementation. The major purpose of the ivestigation was to determine how the District Resource Center can assist in the effective implementation of the visual arts component of the BC Elementary Fine Arts Curriculum/Resource Guide Book. Secondary purposes of the study were to determine: 1) how the District Resource Center's present art instructional media can be adapted to the proposed implementation strategy and 2) how the art instructional media can be utilized most effectively by the elementary non-art specialist teacher to implement the new elementary art curriculum. Data for this study were collected through questionnaires distributed to district elementary school teachers and principals, and by conducting telephone interviews with the District Elementary School Principal and the Ministry of Education's Curriculum Development Branch co-ordinator. In addition a personal inspection and assessment of the District Resource Center and ten of the district elementary schools was conducted with a view to determining both facilities' suitability for the implementation of an art and instructional media program. The questionnaires in this study relied on the collection of qualitative data; however, the bulk of data collection employed a qualitative research technique based on an ethnographic model as outlined by Eisner (1985) in his article, "On the Differences Between Artistic and Scientific Approaches to Qualitative Research". Research findings have been presented and interpreted using a summary of Eisner's (1985) ten dimensions of artistic inquiry as a framework of reference. Findings from all the data have been compiled to establish a total picture of the School District's present elementary art and instructional media programs. By focussing on the strengths of the district's art and instructional media programs, an implementation strategy has been developed to assist elementary non-art specialist teachers with the implementation of the visual arts component of the BC Elementary Fine Arts Curriculum/Resource Guide Book. The implementation strategy relies on the use of instructional media, therefore the District Resource Center is identified as the primary executor of the implementation strategy. In addition, recommendations have been made on how the Ministry of Education, School District administrators, principals and teachers can assist, since each is considered an important contributor to the total implementation plan.
FPU phenomenon for generic initial data
Creators: name: Carati, A.
name: Galgani, L.
name: Giorgilli, A.
name: Paleari, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The well known FPU phenomenon (lack of attainment of equipartition of the mode--energies at low energies, for some exceptional initial data) suggests that the FPU model does not have the mixing property at low energies. We give numerical indications that this is actually the case. This we show by computing orbits for sets of initial data of full measure, sampled out from the microcanonical ensemble by standard Montecarlo techniques. Mixing is tested by looking at the decay of the autocorrelations of the mode--energies, and it is found that the high--frequency modes have autocorrelations that tend instead to positive values. Indications are given that such a nonmixing property survives in the thermodynamic limit. It is left as an open problem whether mixing obtains within time--scales much longer than the presently available ones.
A causal and continuous interpretation of the quantum theory: About an original manuscript by David Bohm sent to Louis de Broglie in 1951
Creators: name: Drezet, Aurélien
name: Stock, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The aim of this article is reproduce and analyze an original article of David Bohm sent to Louis de Broglie in 1951. This article is the older document of David Bohm about his well known hidden variable theory based on the pilot wave interpretation of Louis de Broglie. We analyse the chronology and the history of this fascinating document.
description: To appear
Cyrtodactylus phongnhakebangensis
Creators: name: Luu, Vinh Quang
name: Bonkowski, Michael
name: Nguyen, Truong Quang
name: Le, Minh Duc
name: Schneider, Nicole
name: Ngo, Hanh Thi
name: Ziegler, Thomas
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Cyrtodactylus
Cyrtodactylus phongnhakebangensis

description: Cyrtodactylus phongnhakebangensis group
 Species. C. bansocensis, C. calamei, C. darevskii, C. hinnamnoensis, C. jaegeri, C. jarujini, C. khammouanensis, C. lomyenensis, C. multiporus, C. pageli, C. rufford, C. sommerladi, C. soudthichaki, C. teyniei.
 Characters. Adult SVL 73–100.6 mm, supranasals 0–1; dorsal tubercles 10–24 (except for C. sommerladi, which only has 0–5); webbing between fingers and toes absent; tubercles on fore limbs lacking (except for C. calamei, C. hinnamnoensis, C. jaegeri, C. jarujini, C. multiporus, and C. soudthichaki); tubercles on hind limbs present (except for C. pageli); precloacal and femoral pores in males 20–60 (except for C. pageli only four and for C. teyniei such data is lacking); postcloacal tubercles 3–8 (rarely two); subcaudals enlarged; body bearing welldefined bands 3–8 (except for C. jarujini and C. teyniei, which are blotched).
 Distribution. The group is mainly distributed in the karst forest mountains of Khammouane Province in central Laos, C. calamei, C. hinnamnoensis, and C. sommerladi are restricted to Hin Nam No NPA in the southeastern Khammouane Province. C. jarujini and C. teyniei are recorded from Bolikhamxay Province, while C. pageli is only known to occur in Vientiane Province.
 Remarks. The Cyrtodactylus phongnhakebangensis group is very complex. Different morphological traits of the species of this group (e.g., body size, shape and number of dorsal bands, and number of precloacal and femoral pores, see Tables 7 & 13) were supported by other morphological and phylogenetic analyses (see Figs. 1–5). All species of the group are adapted to karst forested formations.
description: Published as part of Luu, Vinh Quang, Bonkowski, Michael, Nguyen, Truong Quang, Le, Minh Duc, Schneider, Nicole, Ngo, Hanh Thi & Ziegler, Thomas, 2016, Evolution in karst massifs: Cryptic diversity among bent-toed geckos along the Truong Son Range with descriptions of three new species and one new country record from Laos, pp. 101-140 in Zootaxa 4107 (2) on page 132, DOI: 10.11646/zootaxa.4107.2.1, http://zenodo.org/record/266526
A relaxation function encompassing the stretched exponential and the compressed hyperbola
Creators: name: Berberan-Santos, Mario
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A simple relaxation function I(t/tauzero; alpha, beta) unifying the stretched exponential with the compressed hyperbola is obtained, and its properties studied. The scaling parameter tauzero has dimensions of time, whereas the shape-determining parameters alpha and beta are dimensionless, both taking values between 0 and 1. For short times, the relaxation function is always exponential, with time constant tauzero. For small values of alpha, the function is close to exponential for all times, irrespective of beta. The function is also close to an exponential when beta is near unity, irrespective of alpha. For large values of alpha and long times, the function is close to a stretched exponential, provided that beta>0. The compressed hyperbola is recovered for beta=0.
description: 17 pages, 4 figures
Presentación: Participación de los ciudadanos en los medios de comunicación social durante Covid-19. Caso del Ecuador
Creators: name: Suing, Abel
Publisher: name: Zenodo
Year: 2021
Subjects: Covid-19
comunicación
participación
ciudadanos
medios
derecho
información
Ecuador

description: Presentación en WMETACOM 2021 - IV Taller sobre Medios, Tecnología Aplicada y Comunicación http://www.icits.me/index.php?option=com_content&view=article&id=26&Itemid=122&lang=en
Multi-particle systems on the lattice and chiral extrapolations: a brief review
Creators: name: Mai, Maxim
name: Döring, Michael
name: Rusetsky, Akaki
Publisher: name: arXiv
Year: 2021
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 extraction of two- and three-body hadronic scattering amplitudes and the properties of the low-lying hadronic resonances from the finite-volume energy levels in lattice QCD represents a rapidly developing field of research. The use of various modifications of the Lüscher finite-volume method has opened a path to calculate infinite-volume scattering amplitudes on the lattice. Many new results have been obtained recently for different two- and three-body scattering processes, including the extraction of resonance poles and their properties from lattice data. Such studies, however, require robust parametrizations of the infinite-volume scattering amplitudes, which rely on basic properties of $S$-matrix theory and -- preferably -- encompass systems with quark masses at and away from the physical point. Parametrizations of this kind, provided by unitarized Chiral Perturbation Theory, are discussed in this review. Special attention is paid to three-body systems on the lattice, owing to the rapidly growing interest in the field. Here, we briefly survey the formalism, chiral extrapolation, as well as finite-volume analyses of lattice data.
description: 33 pages, 5 figures
情绪泪液代谢组学研究-Non-targeted metabolomics analysis of emotional tears of human
Creators: name: 梁昊(Liang Hao)
Publisher: name: CNGB
Year: 2021
Subjects: Metabolome
Multiisolate
Medical

description: We hypothesize that different emotional tears (positive or negative emotions) contain distinct substances, which may be the basis of chemosignal for tearing. The present study seeks to address the biochemical story behind emotional tears by non-targeted metabolomics analysis between positive and negative emotional tears of humans and discovering biomarkers of emotions via bioinformatic identification.
Deeply metagenome sequencing of 14 fecal samples from weanling piglet
Creators: name: 胡童远(Hu Tongyuan)
Publisher: name: CNGB
Year: 2021
Subjects: Raw sequence reads
Metagenome
Environment
Agricultural

description: We performed a study of bacteria cultivation and genome sequencing along with deeply metagenome sequencing of 14 fecal samples from weanling piglet. Metagenomic DNA of 14 samples were extracted and sequenced for 100 bp paired-end on DNBSEQ-T7 platform.
Search for large extra dimensions in final states containing one photon or jet and large missing transverse energy produced in p-pbar collisions at sqrt(s) = 1.96 TeV
Creators: name: CDF Collaboration
name: Aaltonen, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the results of searches for large extra dimensions in samples of events with large missing transverse energy and either a photon or a jet produced in p-pbar collisions at sqrt(s) = 1.96 TeV collected with the CDF II detector. For gamma + missing Et and jet + missing Et candidate samples corresponding to 2.0 fb^-1 and 1.1 fb^-1 of integrated luminosity respectively, we observe good agreement with standard model expectations and obtain a combined lower limit on the fundamental parameter of the large extra dimensions model, Md, as a function of the number of extra dimensions in the model.
description: Submitted to Phys. Rev. Lett
On the variability of the sample covariance matrix under complex elliptical distributions
Creators: name: Raninen, Elias
name: Ollila, Esa
name: Tyler, David E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We derive the form of the variance-covariance matrix for any affine equivariant matrix-valued statistics when sampling from complex elliptical distributions. We then use this result to derive the variance-covariance matrix of the sample covariance matrix (SCM) as well as its theoretical mean squared error (MSE) when finite fourth-order moments exist. Finally, illustrative examples of the formulas are presented.
Single-Beam 1-D, 2-D And 3-D Patterning Of Liquid Crystal-Polymer Composites With Spatial Light Modulation Based On Computer-Generated Holography
Creators: name: Zito, Gianluigi
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: The technique of Spatial Light Modulation based on Computer-generated Holography has been successfully exploited to realize patterned samples made by a mixture of liquid crystal and polymeric composites. We believe that the realized structures and, mainly, the employed technique can promote important interests in the development of soft matter photonic devices due to the extreme flexibility and ease of production of our technique, the all joined with the known tuning features of the LC component. Our single-beam technique was developed with three different approaches (Fourier optics-based, direct imaging and interference-based) and allowed the realization of complex structures with micrometric resolution and with accurate control of the writing intensity distribution in the visible range. The irradiance pattern can be, in fact, modified in real time by in-video addressing of the computer-generated holograms (CGHs), without the need for sophisticated mechanical control of the optical table and realignment of the optical elements. Regular patterned samples with good optical contrast were obtained, leading to Photonic Crystals (PhCs) structures with 1D, 2D, and 3D geometries. Regular but not periodic two-dimensional structures were also obtained, leading to Photonic Quasicrystals (PhQCs) of the Penrose, Octagonal, Dodecagonal type and other 2D structures with rotational symmetry up to 23-fold, together with aperiodic structures too like the 2D Thue-Morse pattern. Moreover, samples with structures of defects were also produced with a single-step process. Results of optical and electro-optical characterization of realized samples are presented. Theoretical FDTD studies of the transmission spectra and photonic properties of the structures produced are also shown. The FDTD simulations demonstrate the importance of the choice of the geometric tiling in the building process of the PhQCs, influencing the characteristics of the photonic band-gap of the structures.
Moreover, the PBG dependence on the rotational symmetry for low dielectric contrast quasicrystals has been discussed.
An Extra Long X-Ray Plateau in a Gamma-Ray Burst and the Spinar Paradigm
Creators: name: Lipunov, V.
name: Gorbovskoy, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recently discovered gamma-ray burst GRB 070110 displayed an extraordinary X-ray afterglow with Xray radiation-i.e., an X-ray plateau-observed for 20,000 s. We show that the observed properties of the plateau can be naturally interpreted in terms of the model with a spinar-a quasi-equilibrium collapsing object whose equilibrium is maintained by the balance of centrifugal and gravitational forces and whose evolution is determined by its magnetic field. If this model is true, then for 1 hr, the Swift X-ray telescopes recorded radiation from an object with a size smaller than the Schwarzschild radius!
description: 10 pages 3 figures
Approximate Policy Iteration (API) with neural networks for the
      generalized single node energy storage problem
Creators: name: Frimpong, Richlove
Publisher: name: Lancaster University
Year: 2019

description: Energy storage problems are hard sequential decision-making problems often
      modelled as markov decision processes. Exact solution using dynamic
      programming quickly becomes implausible with large state spaces hence
      approximate dynamic programming using policy iteration (API) is often
      employed in such cases. API does not always work, one reason being that
      the approximation architectures used are often linear for computational
      tractability reasons. We propose a mathematical model which allows easier
      implementation of non-linear approximations with API. We use neural
      networks along with monte-carlo simulation to predict the future values
      for the generated states during the improvement step of the API algorithm.
      Our initial experiments suggest that the proposed method provides good
      results which can be further improved with more fine tuning of the neural
      network parameters.
Absorption of 10 Gev--1 Tev Gamma Rays by Radiation from Broad-Line Region in 3C 279
Creators: name: Liu, H. T.
name: Bai, J. M.
name: Ma, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we study the photon-photon pair production optical depth for 10 GeV--1 TeV gamma rays from 3C 279 due to the diffuse radiation of broad-line region (BLR). Assuming a power-law spectrum of $E_γ^{-a_2}$ for the photon intensity of very high energy (VHE) gamma rays, $a_1 \gtrsim 405$ and $a_2\gtrsim 6.4$ are inferred by the integrated photon fluxes measured by MAGIC and HESS. Based on this power-law spectrum, the pre-absorbed spectra are inferred by correcting the photon-photon absorption on the diffuse photons of the BLR (internal absorption) and the extragalactic background light (external absorption). Position of gamma-ray emitting region $R_{\rmγ}$ determines the relative contributions of this two diffuse radiation to the total absorption for 10 GeV--1 TeV gamma rays. The internal absorption could make spectral shape of gamma rays more complex than only corrected for the external absorption, and could lead to the formation of arbitrary softening and hardening gamma-ray spectra. It should be necessary for the internal absorption to be considered in studying 10 GeV--1 TeV gamma rays from powerful blazars. The energies of annihilated gamma-ray photons due to the internal absorption are likely to be mainly reradiated around GeV. Our results indicate that $R_{\rmγ}$ may be between the inner and outer radii of the BLR for 3C 279. This implies for powerful blazars that $R_{\rmγ}$ might be neither inside the BLR cavity nor outside the BLR, but be within the BLR shell. Observations of $\it GLAST$, MAGIC, HESS, and VERITAS in the near future could give more constraints on the position of the gamma-ray emitting region relative to the BLR.
description: 29 pages, 7 figures, Received: 4 June 2008, Accepted in ApJ: 18 Jul 2008
Propagation of Squeezed Vacuum under Electromagnetically Induced Transparency
Creators: name: Figueroa, Eden
name: Lobino, Mirko
name: Korystov, Dmitry
name: Appel, Juergen
name: Lvovsky, A. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally and theoretically analyze the transmission of continuous-wave and pulsed squeezed vacuum through rubidium vapor under the conditions of electromagnetically induced transparency. Frequency- and time-domain homodyne tomography is used to measure the quadrature noise and reconstruct the quantum states of the transmitted light. A simple theoretical model explains the spectrum and degradation of the transmitted squeezing with high precision.
f(R) Gravity: From the Pioneer Anomaly to the Cosmic Acceleration
Creators: name: Saffari, Reza
name: Rahvar, Sohrab
Publisher: name: arXiv
Year: 2007
Subjects: 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 use metric formalism in $f(R)$ modified gravity to study the dynamics of various systems from the solar system to the cosmological scale. we assume an ansatz for the derivative of action as a function of distance and describe the Pioneer anomaly and the flat rotation curve of the spiral galaxies. Having the asymptotic behavior of action, we propose the action of $f(R) = (R + Λ)(1 + \ln(R/R_c)/(R/R_0 + 2/α))$ where in galactic and solar system scales it can recover our desired form. The vacuum solution of this action also results in a positive late time acceleration for the universe. We fix the parameters of this model, comparing with the Pioneer anomaly, rotation curve of spiral galaxies and Supernova Type Ia gold sample data.
description: 6 pages, 2 figures
Cyrtodactylus wayakonei
Creators: name: Luu, Vinh Quang
name: Bonkowski, Michael
name: Nguyen, Truong Quang
name: Le, Minh Duc
name: Schneider, Nicole
name: Ngo, Hanh Thi
name: Ziegler, Thomas
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Cyrtodactylus
Cyrtodactylus wayakonei

description: Cyrtodactylus wayakonei group
 Species. C. spelaeus, C. vilaphongi, C.wayakonei.
 Characters. Adult SVL 86.1–91.0 mm, supranasals 0–1; dorsal tubercles 10–19; webbing between fingers and toes absent; tubercles on limbs present; a low number of precoacal pores in males 6–8; postcloacal tubercles 2–4; subcaudals slightly enlarged; dorsal body blotched (except for C. spelaeus).
 Distribution. The group is distributed in karst formations of northern Laos including Luang Nam Tha, Luang Prabang, and Vientiane provinces.
description: Published as part of Luu, Vinh Quang, Bonkowski, Michael, Nguyen, Truong Quang, Le, Minh Duc, Schneider, Nicole, Ngo, Hanh Thi & Ziegler, Thomas, 2016, Evolution in karst massifs: Cryptic diversity among bent-toed geckos along the Truong Son Range with descriptions of three new species and one new country record from Laos, pp. 101-140 in Zootaxa 4107 (2) on page 135, DOI: 10.11646/zootaxa.4107.2.1, http://zenodo.org/record/266526
Neumann-Rosochatius integrable system for strings on AdS_4 x CP^3
Creators: name: Ahn, Changrim
name: Bozhilov, P.
name: Rashkov, R. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the reduction of the string dynamics on AdS_4 x CP^3 to the Neumann-Rosochatius integrable system. All constraints can be expressed simply in terms of a few parameters. We analyze the giant magnon and single spike solutions on R_t x CP^3 with two angular momenta in detail and find the energy-charge relations. The finite-size effects of the giant magnon and single spike solutions are analyzed.
description: some improvements made, a section in appendix and references added;19 pages
Studies on synaptic potentiation in the hippocampus
Creators: name: Goh, Joanne Wan Yoong
Publisher: name: University of British Columbia
Year: 2010

description: The present investigation was conducted on transversely sectioned rat hippocampal slices to examine the mechanisms involved in synaptic potentiation. Results indicate that long-term potentiation (LTP) induced by input tetanization requires extracellular Ca⁺⁺, because during the induction of LTP postsynaptic depolarization must accompany presynaptic activity (LTP could be induced by raised K⁺ [10 to 80 mM] in Ca⁺⁺-free medium). Since LTP (induced by raised K⁺) occurs in the absence of Ca⁺⁺ and, therefore, presumably in the near absence of transmitter release, N-methyl-D-aspartate (NMDA) receptor activation is not obligatory. Moreover, NMDA receptors appear not to be involved in the CA₃ area. A necessity for both pre- and postsynaptic depolarization also accounts for the need for co-stimulation of afferents for LTP induction. Associative potentiation was found not to require tetanic stimulation of the test input; single pulse activation of the test input (at 0.2 Hz) paired with tetanic trains to a conditioning input (presumably to the same postsynaptic neurones) could produce LTP. A short-term potentiation (STP), which resembled post-tetanic potentiation (PTP) in time course, could be induced in an associative fashion by conditioning tetanic trains (paired with single test stimuli), that were insufficient to produce LTP. In the absence of conditioning stimuli, interruption of a regular 0.2 Hz test input stimulation for 10 minutes disclosed a subsequent potentiation. This potentiation could be distinguished from associative potentiation in that it was not associated with a decrease in presynaptic terminal excitability. A decrease in presynaptic terminal excitability was characteristic of associative STP and LTP, and followed similar time courses. Since raised K⁺ reversed rather than accentuated the decreased excitability, it was concluded that it is not due to Na⁺ -inactivation and may be caused by a hyperpolarization which might also lead to an increase in evoked transmitter release. The hypothesis of Baudry and Lynch (1980a) that LTP is due to an increase in glutamate receptors seems unlikely; there was no increase in Na-independent glutamate binding sites (determined by the same method as used by Lynch et- al: [1982]) in association with LTP induced by a single brief 400 Hz (200 pulses) input tetanus. A decrease in the uptake of glutamate occurs with tetanic stimulation under conditions where there is no LTP (absence of Ca⁺⁺ and raised Mg⁺⁺ and Mn⁺⁺) and, therefore, does not appear to be a mechanism producing LTP.
Cyrtodactylus interdigitalis
Creators: name: Luu, Vinh Quang
name: Bonkowski, Michael
name: Nguyen, Truong Quang
name: Le, Minh Duc
name: Schneider, Nicole
name: Ngo, Hanh Thi
name: Ziegler, Thomas
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Cyrtodactylus
Cyrtodactylus interdigitalis

description: Cyrtodactylus interdigitalis group
 Species. C. interdigitalis.
 Characters. Adult SVL 80.0 mm, supranasal single; dorsal tubercle rows 18; webbing between fingers and toes present; tubercles on limbs present; number of precoacal and femoral pores in males 16–18; postcloacal tubercles 1–2; tail dorsally with tubercles; without enlarged subcaudals; dorsal body blotched or ambiguous.
 Distribution. The species is known to occur in central Laos including Vientiane and Khammouane provinces. It is adapted as a tree-dweller, but in contrast to the C. irregularis species group that lives near the base of trees, C. interdigitalis is found higher on tree trunks and in tree crowns.
description: Published as part of Luu, Vinh Quang, Bonkowski, Michael, Nguyen, Truong Quang, Le, Minh Duc, Schneider, Nicole, Ngo, Hanh Thi & Ziegler, Thomas, 2016, Evolution in karst massifs: Cryptic diversity among bent-toed geckos along the Truong Son Range with descriptions of three new species and one new country record from Laos, pp. 101-140 in Zootaxa 4107 (2) on page 135, DOI: 10.11646/zootaxa.4107.2.1, http://zenodo.org/record/266526
A new comprehensive set of elemental abundances in DLAs III. Star formation histories
Creators: name: Dessauges-Zavadsky, M.
name: Calura, F.
name: Prochaska, J. X.
name: D'Odorico, S.
name: Matteucci, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We obtained comprehensive sets of elemental abundances for eleven damped Ly-alpha systems (DLAs) at z_DLA=1.7-2.5. In Paper I of this series, we showed for three DLA galaxies that we can derive their star formation histories and ages from a detailed comparison of their intrinsic abundance patterns with chemical evolution models. We determine in this paper the star formation properties of six additional DLA galaxies. The derived results confirm that no single star formation history explains the diverse sets of abundance patterns in DLAs. We demonstrate that the various star formation histories reproducing the DLA abundance patterns are typical of local irregular, dwarf starburst and quiescent spiral galaxies. Independent of the star formation history, the DLAs have a common characteristic of being weak star forming galaxies; models with high star formation efficiencies are ruled out. All the derived DLA star formation rates per unit area are moderate or low, with values between -3.2 < log SFR < -1.1 M_sol yr^{-1} kpc^{-2}. The DLA abundance patterns require a large spread in ages ranging from 20 Myr up to 3 Gyr. The oldest DLA in our sample is observed at z_DLA=1.864 with an age estimated to more than 3 Gyr; it nicely indicates that galaxies were already forming at z_f>10. But, most of the DLAs show ages much younger than that of the Universe at the epoch of observation. Young galaxies thus seem to populate the high redshift Universe at z>2, suggesting relatively low redshifts of formation (z~3) for most high-redshift galaxies. The DLA star formation properties are compared with those of other high-redshift galaxies identified in deep imaging surveys with the aim of obtaining a global picture of high-redshift objects.
description: 19 pages, 11 figures, Accepted for publication in A&A
Absorption of 10--200 Gev Gamma Rays by Radiation from BLR in Blazars
Creators: name: Liu, H. T.
name: Bai, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we study the photon-photon pair production optical depth for gamma-rays with energies from 10 to 200 GeV emitted by powerful blazars due to the diffuse radiation field of broad line region (BLR). There are four key parameters in the BLR model employed to determine the $γ-γ$ attenuation optical depth of these gamma-rays. They are the gamma-ray emitting radius $R_γ$, the BLR luminosity $L_{\rm{BLR}}$, the BLR half thickness $h$ and the ratio $τ_{\rm{BLR}}/f_{\rm{cov}}$ of the Thomson optical depth to the covering factor of BLR. For FSRQs, on average, it is impossible for gamma-rays with energies from 10 to 200 GeV to escape from the diffuse radiation field of the BLR. If $\it GLAST$ could detect these gamma-rays for most of FSRQs, the gamma-ray emitting region is likely to be outside the cavity formed by the BLR. Otherwise, the emitting region is likely to be inside the BLR cavity. As examples, we estimate the photon-photon absorption optical depth of gamma-rays with energies from 10 to 200 GeV for two powerful blazars, HFSRQ PKS 0405$-$123 and FSRQ 3C 279. Comparing our results with $\it GLAST$ observations in the future could test whether the model employed and the relevant assumptions in this paper are reliable and reasonable, and then limit constraints on the position of the gamma-ray emitting region relative to the BLR and the properties of the BLR.
description: 8 figures
Sistemi di post-trattamento dei gas di scarico dei motori diesel
Creators: name: Iaccio, Immacolata
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Le centraline di monitoraggio dell’inquinamento disposte in alcuni punti delle grandi città rilevano spesso concentrazioni di polveri sottili (particolato) superiori ai limiti, il che costringe le autorità a prendere provvedimenti per limitare la circolazione delle auto private. Il maggiore responsabile della presenza di tale inquinante è il motore diesel e anche se c’è stato negli ultimi anni un grande impulso alla ricerca di soluzioni tecniche per ridurre gli ossidi di azoto e il particolato emessi da tali motori, le polveri sottili continuano ad aumentare.
L’età media del parco circolante di bus e camion è di circa 14 anni e per motivi economici è difficile ridurla. Pertanto una soluzione al contenimento delle emissioni è l’installazione di dispositivi after market in grado di ridurre l’emissione di particolato dei motori di vecchia generazione. Per after market s’intende qualunque dispositivo, combustibile o additivo, che applicati o introdotti al motore portano ad una riduzione delle emissioni inquinanti in particolare il particolato e gli ossidi di azoto.
La ricerca svolta su alcuni dispositivi after market per la riduzione del particolato e si è divisa in due fasi: sperimentazione in sala prova e sperimentazione su strada. In sala prova si è svolta su un motore FIAT IVECO 8360 46B 6 cilindri 7,8 litri sovralimentato rispondente ai requisiti EURO 2, motore rappresentativo del parco circolante di autobus sia per tipo di motore che per quanto riguarda le ore di moto accumulate. Su tale motore si sono realizzate prove al banco in condizioni stazionarie: 13 modi ESC (European Steady State Cycle) secondo la direttiva 1999/96/CE e realizzato un protocollo di prova per dispositivi after market.
Nella seconda fase della ricerca, si è realizzato una sperimentazione su strada, per verificare se questi dispositivi installati separatamente su alcuni autobus che svolgevano normale esercizio di linea in tre diverse città, avessero un effetto di riduzione delle emissioni inquinanti e dei consumi di carburante.
Hantaviruserkrankungen in Deutschland: Hohe Fallzahlen im Frühsommer 2019
Creators: name: Faber, Mirko
Publisher: name: Robert Koch-Institut
Year: 2019
Subjects: subject: Hantavirus
subject: Ausbruch
subject: Prävention
subject: Rötelmaus
subject: Endemie
subject: 610 Medizin und Gesundheit

description: Hantaviren kommen weltweit bei Nagetieren und anderen kleinen Säugetieren vor. Die Viren werden von infizierten Tieren über Kot, Urin und Speichel ausgeschieden. Wie bereits in den Jahren 2007, 2010, 2012, 2015 und 2017 beobachtet ist die Inzidenz der Hantaviruserkrankung in den bekannten Endemiegebieten seit Ende des Vorjahres kontinuierlich und stark angestiegen. Zwischen Jahresbeginn und dem 15. Juni 2019 wurden 589 Erkrankungsfälle an das Robert Koch-Institut übermittelt. Im bislang stärksten Ausbruchsjahr 2012 waren es im gleichen Zeitraum n = 1.370 übermittelte Fälle. Wie im Bericht des Epidemiologischen Bulletins 25/2019 ausgeführt entspricht sowohl die Alters- und Geschlechterverteilung als auch der Anteil hospitalisierter Fälle denen der früheren Ausbruchsjahre. Insofern ist das Jahr 2019 zwar ein Jahr mit hohen Fallzahlen, stellt unter den Ausbruchsjahren jedoch keine Besonderheit dar.
LA NUOVA DISCIPLINA DELLA RESPONSABILITA' PER DANNO ALL'AMBIENTE TRA INIZIATIVE EUROPEE E PROBLEMATICHE IRRISOLTE
Creators: name: Russo, Tiziana
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: l'elaborato illustra la normativa nazionale e comunitaria in materia di prevenzione,ripristino e risarcimento del danno all'ambiente, evidenziando le modifiche alle normative previgenti e abrogate, con contestuale esame dei profili attinenti al regime della responsabilità per danno all'ambiente. Poichè il nuovo sistema di prevenzione è diretto a dare attuazione alla direttiva 2004/35/ CEE      " sulla responsabilità ambientale in materia di prevenzione e di riparazione del danno ambientale" l'elaborato commenta le prescrizioni e gli obiettivi comunitari in riferimento alla politica europea sull'ambiente.
LEVERAGING DIGITAL CHANNELS FOR CUSTOMER ENGAGEMENT AND SALES: EVALUATING SEO, CONTENT MARKETING, AND SOCIAL MEDIA FOR BRAND GROWTH
Creators: name: Mbonigaba Celestin*, S. Sujatha**, A. Dinesh Kumar*** & M. Vasuki****
Publisher: name: Zenodo
Year: 2024

description: The research explores the effectiveness of digital marketing strategies, particularly Search Engine Optimization (SEO), content marketing, and social media, in boosting brand awareness. The objective was to assess the impact of these strategies on customer engagement and visibility. A mixed-methods approach was used, involving surveys from 100 businesses and interviews with marketing professionals. The findings revealed that businesses that adopted SEO experienced a 40% increase in organic traffic, while those focusing on content marketing saw a 60% improvement in customer retention. Social media marketing led to a 53% rise in customer engagement. The research concludes that a multi-channel digital marketing approach is essential for maximizing brand visibility.
Phase Separation in Bose-Fermi-Fermi Mixtures as a Probe of Fermi Superfluidity
Creators: name: Bhongale, S. G.
name: Pu, Han
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the phase diagram of a mixture of Bose-Einstein condensate and a two-component Fermi gas. In particular, we identify the regime where the homogeneous system becomes unstable against phase separation. We show that, under proper conditions, the phase separation phenomenon can be exploited as a robust probe of Fermi superfluid.
Intersections of several disks of the Riemann sphere as K-spectral sets
Creators: name: Badea, Catalin
name: Beckermann, Bernhard
name: Crouzeix, Michel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Spectral Theory (math.SP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A25, 15A60

description: We prove that if $n$ closed disks $D_1, D_2, ..., D_n$, of the Riemann sphere are spectral sets for a bounded linear operator $A$ on a Hilbert space, then their intersection $D_1\cap D_2...\cap D_n$ is a complete $K$-spectral set for $A$, with $K\leq n+n(n-1)/\sqrt3$. When $n=2$ and the intersection $X_1\cap X_2$ is an annulus, this result gives a positive answer to a question of A.L. Shields (1974).
description: 4 figures, a remark suggested by Vern Paulsen was added
Chen's double sieve, Goldbach's conjecture and the twin prime problem
Creators: name: Wu, Jie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We give a more comrehensive treatment of Chen's double sieve and improve related constants in Goldbach's conjecture and the twin prime problem.
title: Applying next generation sequencing of genomes and transcriptomes to investigate the population structure and biology of Plasmodium species
Creators: name: Hocking, S
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2020

description: Plasmodium parasites, the causative agents of malaria, are responsible for a significant burden of disease worldwide. Understanding populations and parasite biology is critical to developing effective control mechanisms and questions relating to these have been addressed in this thesis using whole genome and transcriptome sequencing. In Southeast Asia, the zoonotic species Plasmodium knowlesi now causes a significant amount of malarial disease, particularly in Malaysia. Clinical isolates of P. knowlesi from peninsular Malaysia were whole genome sequenced and single nucleotide polymorphisms were used to inform population genomic analyses. This work confirmed the existence of a third, divergent population of P. knowlesi in peninsular Malaysia and uncovered evidence of selection acting on these parasites. In sub-Saharan Africa, P. falciparum is responsible for virtually all malarial disease. Clinical isolates sampled from West Africa were investigated using whole transcriptome sequencing of ex vivo parasites, focusing on a gene known as mspdbl2, which is a possible marker of gametocytogenesis. Schizonts from clinical isolates were assessed for MSPDBL2 expression by immunofluorescence assays and were whole transcriptome sequenced. Analysis of gene expression was carried out correlating to expression of MSPDBL2, revealing enrichment of genes with known or suspected involvement in gametocytogenesis. A limiting factor of this investigation was the very low amount of material available from ex vivo culture. An alternative avenue for investigating limiting material is through single-cell sequencing. One method for single-cell transcriptomics was trialled in this thesis and extensive optimisation resulted in the sequencing of transcriptomes from a small number of P. falciparum schizonts, offering a future methodology for investigating gene expression using very few parasites.
Pathwise coordinate optimization
Creators: name: Friedman, Jerome
name: Hastie, Trevor
name: Höfling, Holger
name: Tibshirani, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computation (stat.CO)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider ``one-at-a-time'' coordinate-wise descent algorithms for a class of convex optimization problems. An algorithm of this kind has been proposed for the $L_1$-penalized regression (lasso) in the literature, but it seems to have been largely ignored. Indeed, it seems that coordinate-wise algorithms are not often used in convex optimization. We show that this algorithm is very competitive with the well-known LARS (or homotopy) procedure in large lasso problems, and that it can be applied to related methods such as the garotte and elastic net. It turns out that coordinate-wise descent does not work in the ``fused lasso,'' however, so we derive a generalized algorithm that yields the solution in much less time that a standard convex optimizer. Finally, we generalize the procedure to the two-dimensional fused lasso, and demonstrate its performance on some image smoothing problems.
description: Published in at http://dx.doi.org/10.1214/07-AOAS131 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Spin-selective localization due to intrinsic spin-orbit coupling
Creators: name: Tserkovnyak, Yaroslav
name: Akhanjee, Shimul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study spin-dependent diffusive transport in the presence of a tunable spin-orbit (SO) interaction in a two-dimensional electron system. The spin precession of an electron in the SO coupling field is expressed in terms of a covariant curvature, affecting the quantum interference between different electronic trajectories. Controlling this curvature field by modulating the SO coupling strength and its gradients by, e.g., electric or elastic means, opens intriguing possibilities for exploring spin-selective localization physics. In particular, applying a weak magnetic field allows the control of the electron localization independently for two spin directions, with the spin-quantization axis that could be "engineered" by appropriate SO interaction gradients.
description: 7 pages, 1 figure
Il trattamento di fine-vita nella prospettiva di un diritto penale fondato sulla Costituzione
Creators: name: Esposito, Alfonso
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: La ricerca di una plausibile soluzione normativa nelle ipotesi di un malato terminale che richieda di non essere sottoposto ad alcun trattamento sanitario, conformemente al disposto del secondo comma dell'art. 32 Cost.