cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Time Delay in Robertson-McVittie Spacetime and its Application to Increase of Astronomical Unit
Creators: name: Arakida, Hideyoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigated the light propagation by means of the Robertson-McVittie solution which is considered to be the spacetime around the gravitating body embedded in the FLRW (Friedmann-Lema{î}tre-Robertson-Walker) background metric. We concentrated on the time delay and derived the correction terms with respect to the Shapiro's formula. To relate with the actual observation and its reduction process, we also took account of the time transformations; coordinate time to proper one, and conversely, proper time to coordinate one. We applied these results to the problem of increase of astronomical unit reported by Krasinsky and Brumberg (2004). However, we found the influence of the cosmological expansion on the light propagation does not give an explanation of observed value, $d{\rm AU}/dt = 15 \pm 4$ [m/century] in the framework of Robertson-McVittie metric.
description: 15 pages, 1 figure, accepted for publication in New Astronomy
Gaseous dark matter detectors
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: astro-ph.IM
astro-ph.CO

description: Dark matter (DM) detectors with directional sensitivity have the potential of yielding an unambiguous positive observation of WIMPs as well as discriminating between galactic DM halo models. In this paper, we introduce the motivation for directional detectors, discuss the experimental techniques that make directional detection possible, and review the status of the experimental effort in this field. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Eucosmocydia salticola Brown & Razowski & Aarvik & Timm & Copeland 2022, new combination
Creators: name: Brown, John W.
name: Razowski, Józef
name: Aarvik, Leif
name: Timm, Alicia E.
name: Copeland, Robert S.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Eucosmocydia
Eucosmocydia salticola

description: Eucosmocydia salticola (Meyrick, 1913), new combination
Eucosma salticola Meyrick 1913: 271; Razowski and Krüger 2007: 136.
Laspeyresia salticola: Razowski and Krüger 2007: 156.
Eucosmocydia prolixa Razowski and Wojtusiak 2012: 9, new synonym.
Eucosma salticola was described from 12 specimens, including both sexes, from Barberton, Three Sisters, and Waterval Onder, Transvaal, South Africa. According to Razowski and Krüger (2007), in addition to the male holotype, there are five paratypes in the DMP. The female holotype and its genitalia were figured by Razowski and Krüger (2007: fig. 147, 310, respectively).
Eucosmocydia prolixa was described from a holotype male from the Obudu Plateau, Nigeria; the description was accompanied by illustrations of the adult and genitalia (Razowski and Wojtusiak 2012: fig. 36, 131). Based on forewing maculation and morphology of the male genitalia, E. prolixa is almost certainly conspecific with E. salticola.
One of us (LA) has dissected specimens from South Africa, Malawi, Kenya, and Uganda that superficially resemble the type specimen of E. salticola figured by Razowski and Krüger (2007: fig. 147), and the genitalia of those specimens are nearly indistinguishable from those illustrated by Razowski and Krüger (2007, female) and Razowski and Wojtusiak (2012, male). Although the adult of E. prolixa has a slightly different forewing color, the pattern is essentially the same as that of E. salticola, and the female genitalia of E. salticola strongly resemble those of E. prolixa (see Agassiz and Aarvik 2014: fig. 33).
description: Published as part of Brown, John W., Razowski, Józef, Aarvik, Leif, Timm, Alicia E. & Copeland, Robert S., 2022, New species and new combinations in Afrotropical Eucosmocydia Diakonoff, 1988 (Lepidoptera: Tortricidae: Olethreutinae), pp. 1-27 in Insecta Mundi 2022 (927) on pages 24-25, DOI: 10.5281/zenodo.6533434
The first polarimetric signatures of infrared jets in X-ray binaries
Creators: name: Shahbaz, T.
name: Fender, R. P.
name: Watson, C. A.
name: O'Brien, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present near-infrared linear spectropolarimetry of a sample of persistent X-ray binaries, Sco X-1, Cyg X-2 and GRS1915+105. The slopes of the spectra are shallower than what is expected from a standard steady-state accretion disc, and can be explained if the near-infrared flux contains a contribution from an optically thin jet. For the neutron star systems, Sco X-1 and Cyg X-2, the polarization levels at 2.4um are 1.3+/-0.10% and 5.4+/-0.7% respectively which is greater than the polarization level at 1.65um. This cannot be explained by interstellar polarization or electron scattering in the anisotropic environment of the accretion flow. We propose that the most likely explanation is that this is the polarimetric signature of synchrotron emission arising from close to the base of the jets in these systems. In the black hole system GRS1915+105 the observed polarization, although high (5.0+/-1.2% at 2.4um), may be consistent with interstellar polarization. For Sco X-1 the position angle of the radio jet on the sky is approximately perpendicular to the near-infrared position angle (electric vector), suggesting that the magnetic field is aligned with the jet. These observations may be a first step towards probing the ordering, alignment and variability of the outflow magnetic field in a region closer to the central accreting object than is observed in the radio band.
description: 5 pages, 4 figures, accepted by ApJ
Nuclear enhancement and suppression of diffractive structure functions at high energies
Creators: name: Kowalski, H.
name: Lappi, T.
name: Marquet, C.
name: Venugopalan, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute diffractive structure functions for both protons and nuclei in the framework of Color Glass Condensate models with impact parameter dependence. These models have previously been shown to provide good agreement with inclusive F_2 measurements and exclusive vector meson measurements at HERA. For nuclei, they provide good (parameter free) agreement with the inclusive F_2 data. We demonstrate good agreement of our computations with HERA measurements on inclusive diffraction. We extend our analysis to nuclei and predict the pattern of enhancement and suppression of the diffractive structures functions that can be measured at an Electron Ion Collider. We discuss how the impact parameter dependence crucially affects our analysis, in particular for large invariant masses at fixed Q^2.
description: 12 pages, RevTeX4, 12 figures. V2: minor clarifications and typos corrected, to be published in PRC
The Kondo Lattice Model in Infinite Dimensions I. Formalism
Creators: name: Otsuki, Junya
name: Kusunose, Hiroaki
name: Kuramoto, Yoshio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A Green-function formalism for the Kondo lattice model is presented, which is designed to be combined with the dynamical mean-field theory. With use of Wick's theorem only for conduction electrons, dynamical quantities are represented in terms of the t-matrix and its two-particle generalizations. By taking the high-frequency limit of the t-matrix with respect to a part of the fermion frequencies, one obtains dynamical correlation functions of localized moments. Explicit examples of calculational steps are provided with use of the continuous-time quantum Monte Carlo method.
description: 13 pages, 10 figures
Compactness of the Complex Green Operator
Creators: name: Raich, Andrew S.
name: Straube, Emil J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 32W10, 32W05, 35N15

description: Let $Ω\subset\C^n$ be a bounded smooth pseudoconvex domain. We show that compactness of the complex Green operator $G_{q}$ on $(0,q)$-forms on $bΩ$ implies compactness of the $\bar{\partial}$-Neumann operator $N_{q}$ on $Ω$. We prove that if $1 \leq q \leq n-2$ and $bΩ$ satisfies $(P_q)$ and $(P_{n-q-1})$, then $G_{q}$ is a compact operator (and so is $G_{n-1-q}$). Our method relies on a jump type formula to represent forms on the boundary, and we prove an auxiliary compactness result for an `annulus' between two pseudoconvex domains. Our results, combined with the known characterization of compactness in the $\bar{\partial}$-Neumann problem on locally convexifiable domains, yield the corresponding characterization of compactness of the complex Green operator(s) on these domains.
description: 17 pages. We added an appendix, fixed the proof of a main theorem, and revised the statement of another theorem. Also, we fixed some other typos
Formality theorems for hochschild complexes and their applications
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: Hochschild complexes
deformation quantization

description: We give a popular introduction to formality theorems for Hochschild complexes and their applications. We review some of the recent results and prove that the truncated Hochschild cochain complex of a polynomial algebra is non-formal. © 2009 The Author(s).
Ultracold polar molecules near quantum degeneracy
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: physics.atom-ph
cond-mat.other

description: We report the creation and characterization of a near quantum-degenerate gas of polar 40K-87Rb molecules in their absolute rovibrational ground state. Starting from weakly bound heteronuclear KRb Feshbach molecules, we implement precise control of the molecular electronic, vibrational, and rotational degrees of freedom with phase-coherent laser fields. In particular, we coherently transfer these weakly bound molecules across a 125 THz frequency gap in a single step into the absolute rovibrational ground state of the electronic ground potential. Phase coherence between lasers involved in the transfer process is ensured by referencing the lasers to two single components of a phase-stabilized optical frequency comb. Using these methods, we prepare a dense gas of 4 × 104 polar molecules at a temperature below 400 nK. This fermionic molecular ensemble is close to quantum degeneracy and can be characterized by a degeneracy parameter of T/TF = 3. We have measured the molecular polarizability in an optical dipole trap where the trap lifetime gives clues to interesting decay mechanisms. Given the large measured dipole moment of the KRb molecules of 0.5 Debye, the study of quantum degenerate molecular gases interacting via strong dipolar interactions is now within experimental reach. PACS numbers: 37.10.Mn, 37.10.Pq. © 2009 The Royal Society of Chemistry.
S-Parameter Uncertainties in Network Analyzer Measurements with Application to Antenna Patterns
Creators: name: Yannopoulou, Nikolitsa
name: Zimourtopoulos, Petros
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An analytical method was developed, to estimate uncertainties in full two-port Vector Network Analyzer measurements, using total differentials of S-parameters. System error uncertainties were also estimated from total differentials involving two triples of standards, in the Direct Through connection case. Standard load uncertainties and measurement inaccuracies were represented by independent differentials. Complex uncertainty in any quantity, differentiably dependent on S-parameters, is estimated by the corresponding Differential Error Region. Real uncertainties, rectangular and polar, are estimated by the orthogonal parallelogram and annular sector circumscribed about the Differential Error Region, respectively. From the user's point of view, manufactures' data may be used to set the independent differentials and apply the method. Demonstration results include: (1) System error differentials for Short, matching Load and Open pairs of opposite sex standards; (2) System error uncertainties for VNA extended by two lengthy transmission lines of opposite sex end-connectors; (3) High uncertainties in Z-parameters against frequency of an appropriately designed, DC resistive, T-Network; (4) Moderate uncertainties in amplitude and phase patterns of a designed UHF radial discone antenna (azimuthally rotated by a built positioner, under developed software control of a built hardware controller) polarization coupled with a constructed gain standard antenna (stationary) into an anechoic chamber.
description: 9 pages, 15 figures
Nuclear deformation and neutrinoless double-$β$ decay of $^{94,96}$Zr, $^{98,100}$Mo, $^{104}$Ru, $^{110}$Pd, $^{128,130}$Te and $^{150}$Nd nuclei in mass mechanism
Creators: name: Chaturvedi, K.
name: Chandra, R.
name: Rath, P. K.
name: Raina, P. K.
name: Hirsch, J. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The $(β^{-}β^{-})_{0ν}$ decay of $^{94,96}$Zr, $^{98,100}$Mo, $^{104}$Ru, $^{110}$Pd, $^{128,130}$Te and $^{150}$Nd isotopes for the $0^{+}\to 0^{+}$ transition is studied in the Projected Hartree-Fock-Bogoliubov framework. In our earlier work, the reliability of HFB intrinsic wave functions participating in the $β^{-}β^{-}$ decay of the above mentioned nuclei has been established by obtaining an overall agreement between the theoretically calculated spectroscopic properties, namely yrast spectra, reduced $B(E2$:$0^{+}\to 2^{+})$ transition probabilities, quadrupole moments $Q(2^{+})$, gyromagnetic factors $g(2^{+})$ as well as half-lives $T_{1/2}^{2ν}$ for the $0^{+}\to 0^{+}$ transition and the available experimental data. In the present work, we study the $(β^{-}β^{-})_{0ν}$ decay for the $0^{+}\to 0^{+}$ transition in the mass mechanism and extract limits on effective mass of light as well as heavy neutrinos from the observed half-lives $T_{1/2}^{0ν}(0^{+}\to 0^{+})$ using nuclear transition matrix elements calculated with the same set of wave functions. Further, the effect of deformation on the nuclear transition matrix elements required to study the $(β^{-}β^{-})_{0ν}$ decay in the mass mechanism is investigated. It is noticed that the deformation effect on nuclear transition matrix elements is of approximately same magnitude in $(β^{-}β^{-})_{2ν}$ and $(β^{-}β^{-})_{0ν}$ decay.
description: 15 pages, 1 figure
Controlling soliton interactions in Bose-Einstein condensates by synchronizing the Feshbach resonance and harmonic trap
Creators: name: Zhang, Xiao-Fei
name: Yang, Qin
name: Zhang, Jie-Fang
name: Chen, X. Z.
name: Liu, W. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present how to control interactions between solitons, either bright or dark, in Bose-Einstein condensates by synchronizing Feshbach resonance and harmonic trap. Our results show that as long as the scattering length is to be modulated in time via a changing magnetic field near the Feshbach resonance, and the harmonic trapping frequencies are also modulated in time, exact solutions of the one-dimensional nonlinear Schrödinger equation can be found in a general closed form, and interactions between two solitons are modulated in detail in currently experimental conditions. We also propose experimental protocols to observe the phenomena such as fusion, fission, warp, oscillation, elastic collision in future experiments.
description: 7 pages, 7 figures
NMR measurements of power-law behavior in the spin-wave and critical regions of ferromagnetic EuO
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2010
Subjects: cond-mat.mtrl-sci

description: Precision continuous-wave NMR measurements have been carried out over the entire magnetization curve of EuO and are presented in tabular form. Two very closely spaced resonances are observed and are attributed to domain and domain-wall signals. Both of the signals are useful for analysis in the spin-wave region. Only the domain signal is measurable above [formula omitted]. The latter is used for fitting [formula omitted] and the critical exponent [formula omitted]. The critical-region fits agree with previous measurements within experimental error. The low-temperature data exhibit a clear-cut [formula omitted] behavior, at variance with the expectations of conventional spin-wave theory. This result is discussed in relation to two semiempirical spin-wave schemes, one formulated by Bykovetz, and one by Koebler. The NMR signal at 4.2 K gives no indication of a quadrupole splitting in contradiction to the interpretation of several previous spin-echo NMR spectra observed in EuO. This issue remains unresolved. © 2010, American Institute of Physics. All rights reserved.
The cost minimization of machining operations using geometric programming
Creators: name: Freedman, Paul
Publisher: name: University of British Columbia
Year: 2010

description: The cost minimization of a machining operation can be described as a non-linear constrained optimization problem. Geometric Programming (GP) is a relatively new technique well-suited to this class of problems. In this thesis, three GP methods are described that are practical for real-time microprocessor controllers; numerical examples are presented based on three machining operations. For high volume production, several machines can be serially linked with buffers in between to form an Automatic Transfer Line (ATL). The minimization of the combined costs is accomplished in a new way by modelling the cost of each machine as a polynomial function of cycle time, the machining time per workpiece. A new control strategy is described that dynamically re-assigns the cycle times of working machines when others in the ATL fail. To implement this strategy, a two level hierarchy is proposed with a local controller associated with each machine, and a single supervisory controller. Simulation of some typical ATL configurations is used to compare the performance of this strategy with the strategy of no change in cycle time. For the cases studied, modest savings in cost and substantial savings in mean in-process buffer level are obtained when the machines are arranged in the appropriate order.
A quantitative version of the Besicovitch projection theorem via multiscale analysis
Creators: name: Tao, Terence
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 28A75

description: By using a multiscale analysis, we establish quantitative versions of the Besicovitch projection theorem (almost every projection of a purely unrectifiable set in the plane of finite length has measure zero) and a standard companion result, namely that any planar set with at least two projections of measure zero is purely unrectifiable. We illustrate these results by providing an explicit (but weak) upper bound on the average projection of the $n^{th}$ generation of a product Cantor set.
description: 30 pages, 6 figures. Submitted, J. Lond. Math. Soc. Some revisions based on initial referee report
Journée FRB 2022 - une journée consacrée à la Convention sur la diversité biologique (CDB) - Les actes
Creators: name: Fondation Pour la Recherche Sur la Biodiversité
Publisher: name: Fondation pour la recherche sur la biodiversité
Year: 2022

description: À la veille de la sortie du nouveau cadre mondial de la biodiversité de la Convention sur la diversité biologique (CDB) et après la sortie cet été de deux rapports majeurs de l’Ipbes sur « l’évaluation des valeurs associées à la nature » et « l’utilisation durable des espèces sauvages », la Fondation pour la recherche sur la biodiversité a consacré sa Journée FRB 2022 à ce paysage international et ses implications aux niveaux national, territorial et sectoriel. Retrouver ci-dessous les sujets abordés tout au long de la Journée et les liens directs vers les interventions filmées.
Lung cancer: Are we up to the challenge?
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2010
Subjects: Lung cancer
oncosuppressors
oncogenes
epigenetics of lung cancer
diagnostic tools for lung cancer

description: Lung cancer is the leading cause of cancer deaths worldwide among both men and women, with more than 1 million deaths annually. Non-small cell lung cancer (NSCLC) accounts for about 80% of all lung cancers. Although recent advances have been made in diagnosis and treatment strategies, the prognosis of NSCLC patients is poor and it is basically due to a lack of early diagnostic tools. However, in the last years genetic and biochemical studies have provided more information about the protein and gene's mutations involved in lung tumors. Additionally, recent proteomic and microRNA's approaches have been introduced to help biomarker discovery. Here we would like to discuss the most recent discoveries in lung cancer pathways, focusing on the genetic and epigenetic factors that play a crucial role in malignant cell proliferation, and how they could be helpful in diagnosis and targeted therapy. © 2010 Bentham Science Publishers Ltd.
CP Violation in SUSY Particle Production and Decay
Creators: name: Hesselbach, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent studies about CP violation in the Minimal Supersymmetric Standard Model (MSSM) with complex parameters are reviewed. In order to unambiguously identify the CP-violating phenomena it is necessary to study CP-odd or T-odd observables. In chargino and neutralino production and decay at the International Linear Collider (ILC) triple product asymmetries and asymmetries defined via transverse beam polarization have been analyzed. It has been found that these asymmetries can be measured at the ILC in a large region of the MSSM parameter space and are thus an important tool to establish CP violation in supersymmetry.
description: 6 pages, LaTeX, 2 eps figures, uses ilcws07.cls, talk given at the LCWS/ILC 2007 workshop at DESY, Hamburg, Germany, May 30 - June 3, 2007
A rarefaction-tracking method for hyperbolic conservation laws
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2010
Subjects: Method of characteristics
Network flow
Particle method
Reaction kinetics
Similarity solution

description: A numerical method for scalar conservation laws in one space dimension is presented. The solution is approximated by local similarity solutions. While many commonly used approaches are based on shocks, the presented method uses rarefaction and compression waves. The solution is represented by particles that carry function values and move according to the method of characteristics. Between two neighboring particles, an interpolation is defined by an analytical similarity solution of the conservation law. An interaction of particles represents a collision of characteristics. The resulting shock is resolved by merging particles so that the total area under the function is conserved. The method is variation diminishing; nevertheless, it has no numerical dissipation away from shocks. Although shocks are not explicitly tracked, they can be located accurately. Numerical examples are presented, and specific applications and extensions of the approach outlined. © Springer Science+Business Media B.V. 2009.
Semileptonic decays of $B_{s1}$, $B_{s2}^*$, $B_{s0}$ and $B_{s1}'$
Creators: name: Luo, Zhi-Gang
name: Chen, Xiao-Lin
name: Liu, Xiang
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Stimulated by recent observations of the excited bottom-strange mesons $B_{s1}$ and $B_{s2}^*$, we calculate the semileptonic decays $B_{s0}, B_{s1}^{\prime}, B_{s1}, B_{s2}^*\to [D_s(1968), D_{s}^*(2112), D_{sJ}(2317), D_{sJ}(2460)]\ell\barν$, which is relevant for the exploration of the potential of searching these semileptonic decays in experiment.
description: 11 pages, 3 figures, 9 tables. More discussion added, some descriptions changed. The version to appear in EPJC
Lorentz invariance relations between parton distributions and the Wandzura-Wilczek approximation
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: hep-ph

description: The violation of the so-called Lorentz invariance relations between parton distribution functions is considered in a model independent way. It is shown that these relations are not violated in a generalized Wandzura-Wilczek approximation, indicating that numerically their violation may be small. © 2009 Elsevier B.V. All rights reserved.
The Four-Loop Konishi in N=4 SYM
Creators: name: Velizhanin, V. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the result of a full direct component calculation for the planar four-loop anomalous dimension of the Konishi operator in N =4 Supersymmetric Yang-Mills theory. Our result confirms the results obtained from superfield (arXiv:0712.3522, arXiv:0806.2095) and superstring (arXiv:0807.0399) computations, which take into account finite size corrections to the all-loop asymptotic Bethe ansatz for the integrable models describing the spectrum of the anomalous dimensions of the gauge-invariant operators and the spectrum of the string states in the framework of the gauge/string duality.
description: 7 pages, some detailes of calculations added
Generalized parton correlation functions for a spin-1/2 hadron
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: deep inelastic scattering
hadronic colliders
spin and polarization effects
parton model

description: The fully unintegrated, off-diagonal quark-quark correlator for a spin-1/2 hadron is parameterized in terms of so-called generalized parton correlation functions. Such objects, in particular, can be considered as mother distributions of generalized parton distributions on the one hand and transverse momentum dependent parton distributions on the other. Therefore, our study provides new, model-independent insights into the recently proposed nontrivial relations between generalized and transverse momentum dependent parton distributions. We find that none of these relations can be promoted to a model-independent status. As a by-product we obtain the first complete classification of generalized parton distributions beyond leading twist. The present paper is a natural extension of our previous corresponding analysis for spin-0 hadrons. © SISSA 2009.
Chydorus angustirostris Frey 1987
Creators: name: Gusakov, Vladimir A.
name: Dien, Tran Duc
name: Tran, Hoan Quoc
name: Thanh, Nguyen Thi Hai
name: Huan, Phan Trong
name: Ha, Vo Thi
name: Dinh, Cu Nguyen
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Branchiopoda
Anomopoda
Chydoridae
Chydorus
Chydorus angustirostris

description: 41. Chydorus angustirostris Frey, 1987
Localities and specimens found: 50 – 1♀, 1♀ ov, 1j; 51 – 2♀.
Distribution and ecology. This is a very rare member of the genus Chydorus, probably endemic to the Oriental region. Most of the species’detection sites are located in India (Frey 1987; Smirnov 1996; Chatterjee et al. 2013; Sharma & Hatimuria 2017; Gogoi et al. 2018). Not so long ago, it was also discovered in South Vietnam (Cat Tien National Park, Dong Nai province) (Sinev & Korovchinsky 2013). In the same area, Ch. angustirostris was found in the course of our research. Apart from the named countries, this species is not yet known anywhere else.
The lifestyle and ecology of Ch. angustirostris have not been studied. So far, it has been found in a number of permanent and temporary water bodies (floodplain and oxbow lakes, wetlands, forest ponds and pools), including in plankton samples (Frey 1987; Sinev & Korovchinsky 2013; Sharma & Hatimuria 2017; Gogoi et al. 2018). We detected several specimens in a floodplain lake, in the rhizosphere of floating plants (see Appendix 1).
description: Published as part of Gusakov, Vladimir A., Dien, Tran Duc, Tran, Hoan Quoc, Thanh, Nguyen Thi Hai, Huan, Phan Trong, Ha, Vo Thi & Dinh, Cu Nguyen, 2025, An annotated checklist of the main representatives of meiobenthos from inland water bodies of Central and Southern Vietnam. III. Water fleas (Cladocera), pp. 401-455 in Zootaxa 5613 (3) on page 423, DOI: 10.11646/zootaxa.5613.3.1, http://zenodo.org/record/15216705
Two-photon exchange in (semi-)inclusive DIS
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: Two Photon Exchange
Inclusive DIS
SIDIS

description: © 2009 American Institute of Physics. In this note we consider effects of a Two-Photon Exchange (TPE) in inclusive DIS and semi-inclusive DIS (SIDIS). In particular, transverse single spin asymmetries are generated in inclusive DIS if more than one photon is exchanged between the lepton and the hadron. We briefly summarize the TPE in DIS in the parton model and extend our approach to SIDIS, where a new leading twist sin(2φ) contribution to the longitudinal beam spin asymmetry shows up. Possible TPE effects for the Sivers and the Collins asymmetries in SIDIS are power-suppressed.
The reliance on aesthetic codes in contemporary architectural criticism
Creators: name: Torsteinsrud, Ragnhild Kirsti
Publisher: name: University of British Columbia
Year: 2010

description: On an analytical level this study addresses architectural aesthetics; its structure; and the application of such a direction to architectural criticism. Aesthetics is an aspect of architecture that, even though not crucial to the utilitarian purposes of building, influence our everyday appreciation of the environment. Our sense of the aesthetic is developed through culture as well as education and aesthetic judgement is based on experience, reason, and preference. In architecture the aesthetic is expressed through built form; the shape and arrangement of forms; space; light; and materials. Architectural aesthetics is thus understood as incorporating both values and form. Through an examination of contemporary theories in architecture the essence and structure of architectural aesthetics may be explained. The notion of codes, as a tool for the understanding of meaning attribution, is seen as a valid concept through which it is possible to link aesthetics and architectural form. The nature of the aesthetic code is examined through an analysis of all major available critical texts for a selection of buildings in comparison with their formal articulations. This procedure makes possible a systemic collection of aesthetic connotations associated with specific formal arrangements and indicates that there are certain ways in which form can be linked to aesthetic value. These types of relationships, or aesthetic codes, are further examined and are classified as associational, architectural, or spatial according to the cognitive and perceptive responses they evoke. The use of these codes as tools in architectural aesthetic criticism is discussed in one critical example. The thesis concludes that the notion of codes can be applied to architectural aesthetics. Furthermore, such a theory is useful for the understanding of architectural criticism and thereby provides a concept which can be related both to aesthetic theory and critical practice.
Particle acceleration close to the supermassive black hole horizon: the case of M87
Creators: name: Rieger, F. M.
name: Aharonian, F. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The radio galaxy M87 has recently been found to be a rapidly variable TeV emitting source. We analyze the implications of the observed TeV characteristics and show that it proves challenging to account for them within conventional acceleration and emission models. We discuss a new pulsar-type scenario for the origin of variable, very high energy (VHE) emission close to the central supermassive black hole and show that magneto-centrifugally accelerated electrons could efficiently Compton upscatter sub-mm ADAF disk photons to the TeV regime, leading to VHE characteristics close to the observed ones. This suggests, conversely, that VHE observations of highly under-luminous AGNs could provide an important diagnostic tool for probing the conditions prevalent in the inner accretion disk of these sources.
description: 5 pages, one figure (typos corrected); based on presentation at "High Energy Phenomena in Relativistic Outflows", Dublin, Sept. 2007; accepted for publication in International Journal of Modern Physics D
Spot What Matters: Learning Context Using Graph Convolutional Networks for Weakly-Supervised Action Detection
Creators: name: Tsiaousis, Michail
name: Burghouts, Gertjan
name: Hillerström, Fieke
name: van der Putten, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The dominant paradigm in spatiotemporal action detection is to classify actions using spatiotemporal features learned by 2D or 3D Convolutional Networks. We argue that several actions are characterized by their context, such as relevant objects and actors present in the video. To this end, we introduce an architecture based on self-attention and Graph Convolutional Networks in order to model contextual cues, such as actor-actor and actor-object interactions, to improve human action detection in video. We are interested in achieving this in a weakly-supervised setting, i.e. using as less annotations as possible in terms of action bounding boxes. Our model aids explainability by visualizing the learned context as an attention map, even for actions and objects unseen during training. We evaluate how well our model highlights the relevant context by introducing a quantitative metric based on recall of objects retrieved by attention maps. Our model relies on a 3D convolutional RGB stream, and does not require expensive optical flow computation. We evaluate our models on the DALY dataset, which consists of human-object interaction actions. Experimental results show that our contextualized approach outperforms a baseline action detection approach by more than 2 points in Video-mAP. Code is available at \url{https://github.com/micts/acgcn}
description: Paper presented at the International Workshop on Deep Learning for Human-Centric Activity Understanding (DL-HAU2020), January 11, 2021
Semiclassical limits of quantum affine spaces
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: quantum affine space
prime and primitive spectra
Poisson-prime and Poisson-primitive spectra
symplectic core
semiclassical limit
quantum toric variety

description: Semiclassical limits of generic multi-parameter quantized coordinate rings A=Oq(kn) of affine spaces are constructed and related to A, for k an algebraically closed field of characteristic zero and q a multiplicatively antisymmetric matrix whose entries generate a torsion-free subgroup of k. A semiclassical limit of A is a Poisson algebra structure on the corresponding classical coordinate ring R=O(kn), and results of Oh, Park, Shin and the authors are used to construct homeomorphisms from the Poisson-prime and Poisson-primitive spectra of R onto the prime and primitive spectra of A. The Poisson-primitive spectrum of R is then identified with the space of symplectic cores in kn in the sense of Brown and Gordon, and an example is presented (over ℂ) for which the Poisson-primitive spectrum of R is not homeomorphic to the space of symplectic leaves in kn. Finally, these results are extended from quantum affine spaces to quantum affine toric varieties. © Edinburgh Mathematical Society 2009.
AC Power Flows, Generalized OPF Costs and their Derivatives using Complex Matrix Notation
Creators: name: Zimmerman, Ray D.
Publisher: name: Zenodo
Year: 2010
Subjects: power flow
optimal power flow

description: The purpose of this document is to show how the AC power balance and flow equations used in power flow and optimal power flow computations can be expressed in terms of complex matrices, and how their first and second derivatives can be computed efficiently using complex sparse matrix manipulations. Similarly, the derivatives of the generalized AC OPF cost function used by MATPOWER and the corresponding OPF Lagrangian function are developed. The relevant code in MATPOWER is based on the formulas found in this note, in which nodal balances are expressed in terms of complex power and voltages are represented in polar coordinates, and in the companion MATPOWER Technical Note 3 and MATPOWER Technical Note 4, which present formulas for variations based on nodal current balances and cartesian coordinate voltages, respectively.
description: v5 – 2018-04-02
Noncentrosymmetric Commensurate Magnetic Ordering of Multiferroic ErMn2O5
Creators: name: Roessli, B.
name: Fischer, P.
name: Brown, P. J.
name: Janoschek, M.
name: Sheptyakov, D.
name: Gvasaliya, S. N.
name: Ouladdiaf, B.
name: Zaharko, O.
name: Golovenchits, Eu.
name: Sanina, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The non-centrosymmetric magnetic structure of ErMn$_2$O$_5$ has been shown to be very similar to that of HoMn$_2$O$_5$ (Vecchini {\it et al.}, 2008 Phys. Rev. B {\bf 77} 134434). The magnetic modulation at 25 K has propagation vector $\vec k$=(1/2,0,1/4) and the symmetry imposes very few constraints on the magnetic configurations allowed. Only by combining the results of bulk magnetisation measurements, powder and single crystal neutron diffraction and spherical neutron polarization analysis was it possible to distinguish clearly between different models. The susceptibility measurements show that the erbium magnetic moments are aligned parallel to the c-axis indicating strong single-ion anisotropy. Spherical neutron polarimetry demonstrates the presence of two unequally populated chirality domains in ErMn$_2$O$_5$ single crystals. X-ray diffraction measurements on an ErMn$_2$O$_5$ powder using synchrotron radiation show that the buckling angles of the Mn-O-Mn bond change below the transition to the ferroelectric phase.
Multi-channel modelling of the formation of vibrationally cold polar KRb molecules
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: quant-ph

description: We describe the theoretical advances that influenced the experimental creation of vibrationally and translationally cold polar 40K 87Rb molecules [1, 2]. Cold molecules were created from very-weakly bound molecules formed by magnetic field sweeps near a Feshbach resonance in collisions of ultra-cold 40K and 87Rb atoms. Our analysis include the multi-channel bound-state calculations of the hyperfine and Zeeman mixed X1S- and a3Σ+ vibrational levels. We find excellent agreement with the hyperfine structure observed in experimental data. In addition, we studied the spin-orbit mixing in the intermediate state of the Raman transition. This allowed us to investigate its effect on the vibrationally averaged transition dipóle moment to the lowest rovibrational level of the X1S+ state. Finally, we obtained an estimate of the polarizability of the initial and final rovibrational states of the Raman transition near frequencies relevant for optical trapping of the molecules. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Dirac fermions at the H point of graphite: Magneto-transmission studies
Creators: name: Orlita, M.
name: Faugeras, C.
name: Martinez, G.
name: Maude, D. K.
name: Sadowski, M. L.
name: Potemski, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on far infrared magneto-transmission measurements on a thin graphite sample prepared by exfoliation of highly oriented pyrolytic graphite. In magnetic field, absorption lines exhibiting a blue-shift proportional to sqrtB are observed. This is a fingerprint for massless Dirac holes at the H point in bulk graphite. The Fermi velocity is found to be c*=1.02x10^6 m/s and the pseudogap at the H point is estimated to be below 10 meV. Although the holes behave to a first approximation as a strictly 2D gas of Dirac fermions, the full 3D band structure has to be taken into account to explain all the observed spectral features.
description: 4 pages, 4 figures, to appear in Phys. Rev. Lett
Eucosmocydia catamochla Brown & Razowski & Aarvik & Timm & Copeland 2022, new combination
Creators: name: Brown, John W.
name: Razowski, Józef
name: Aarvik, Leif
name: Timm, Alicia E.
name: Copeland, Robert S.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Eucosmocydia
Eucosmocydia catamochla

description: Eucosmocydia catamochla (Meyrick, 1932), new combination
Eucosma catamochla Meyrick 1932: 223; Clarke 1958: 352.
“Grapholitini Unplaced” catamochla: Brown 2005: 365.
Eucosma catamochla was described from five reared specimens from “ Java, teak-forest,” Indonesia, without mention of the host. Clarke (1958: 352) designated a male lectotype (NHML) and illustrated the adult and its genitalia. He also mentioned that two of the five specimens were missing. Brown (2005) transferred the species to “Grapholitini Unplaced” based on the recommendation of Furumi Komai, who contributed the section on Grapholitini to the world catalogue of Tortricidae (Brown 2005).
In the male genitalia of Eucosma catamochla, the long, slender, parallel-sided valva and the tall, narrow, tegumen, to which the socii are fused, are very similar to those features in the male genitalia of Eucosmocydia terreirana (Razowski and Wojtusiak 2014: fig. 5). On the basis of these similarities, we provisionally transfer Eucosma catamochla to Eucosmocydia. This new combination broadens considerably the geographic distribution of Eucosmocydia from that of a strictly Afrotropical genus to now include southeast Asia.
description: Published as part of Brown, John W., Razowski, Józef, Aarvik, Leif, Timm, Alicia E. & Copeland, Robert S., 2022, New species and new combinations in Afrotropical Eucosmocydia Diakonoff, 1988 (Lepidoptera: Tortricidae: Olethreutinae), pp. 1-27 in Insecta Mundi 2022 (927) on page 25, DOI: 10.5281/zenodo.6533434
Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: aggregates (materials)
crystal microstructure
crystallites
excitons
liquid phase deposition
polymer films
ultraviolet spectra
visible spectra

description: We analyze the linear absorption spectrum of regioregular poly(3-hexylthiophene) films spun from a variety of solvents to probe directly the film microstructure and how it depends on processing conditions. We estimate the exciton bandwidth and the percentage of the film composed of aggregates quantitatively using a weakly interacting H-aggregate model. This provides a description of the degree and quality of crystallites within the film and is in turn correlated with thin-film field-effect transistor characteristics. © 2009 American Institute of Physics.
Eucosmocydia terreirana Razowski and Wojtusiak 2014
Creators: name: Brown, John W.
name: Razowski, Józef
name: Aarvik, Leif
name: Timm, Alicia E.
name: Copeland, Robert S.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Eucosmocydia
Eucosmocydia terreirana

description: Eucosmocydia terreirana Razowski and Wojtusiak 2014
Eucosmocydia terreirana Razowski and Wojtusiak 2014: 216.
“Grapholitini sp. 23”: Brown et al. 2014: 372.
Eucosmocydia terreirana was described from a male holotype from Príncipe Island and a female paratype from São Tomé. Our DNA analysis shows that “Grapholitini sp. 23” from Kenya (Brown et al. 2014) is likely conspecific with a specimen of E. terreirana from Gabon; i.e., the barcodes are 98.3% similar. Brown et al. (2014) reported the host of “Grapholitini sp. 23” as Carissa edulis Vahl (Apocynaceae), which represents the first host record for E. terreirana.
description: Published as part of Brown, John W., Razowski, Józef, Aarvik, Leif, Timm, Alicia E. & Copeland, Robert S., 2022, New species and new combinations in Afrotropical Eucosmocydia Diakonoff, 1988 (Lepidoptera: Tortricidae: Olethreutinae), pp. 1-27 in Insecta Mundi 2022 (927) on page 25, DOI: 10.5281/zenodo.6533434
Crossed product of groups. Applications
Creators: name: Agore, A. L.
name: Militaru, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20A05, 20E22, 20J15

description: We survey the extensions of a group by a group using crossed products instead of exact sequences of groups. The approach has various advantages, one of them being that the crossed product is an universal object. Several new applications are given, a general Schreier type theorem is proved and a few open problems are left.
description: Final version. To appear in AJSE
Finite surgeries on three-tangle pretzel knots
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2009
Subjects: math.GT
57M25; 57M05; 57M50

description: We classify Dehn surgeries on (p,q,r) pretzel knots that result in a manifold of finite fundamental group. The only hyperbolic pretzel knots that admit nontrivial finite surgeries are (-2,3,7) and (-2,3,9). Agol and Lackenby's 6 -theorem reduces the argument to knots with small indices p,q,r. We treat these using the Culler-Shalen norm of the SL(2, C)-character variety. In particular, we introduce new techniques for demonstrating that boundary slopes are detected by the character variety. © 2009 Mathematical Sciences Publishers.
Unified continuum approach to crystal surface morphological relaxation
Creators: name: Margetis, Dionisios
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A continuum theory is used to predict scaling laws for the morphological relaxation of crystal surfaces in two independent space dimensions. The goal is to unify previously disconnected experimental observations of decaying surface profiles. The continuum description is derived from the motion of interacting atomic steps. For isotropic diffusion of adatoms across each terrace, induced adatom fluxes transverse and parallel to step edges obey different laws, yielding a tensor mobility for the continuum surface flux. The partial differential equation (PDE) for the height profile expresses an interplay of step energetics and kinetics, and aspect ratio of surface topography that plausibly unifies observations of decaying bidirectional surface corrugations. The PDE reduces to known evolution equations for axisymmetric mounds and one-dimensional periodic corrugations.
description: 5 pages, 1 figure