cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exclusive rho^0 production in deep inelastic scattering at HERA
Creators: name: ZEUS Collaboration
name: Chekanov, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Exclusive rho^0 electroproduction at HERA has been studied with the ZEUS detector using 120 pb^{-1} of integrated luminosity collected during 1996-2000. The analysis was carried out in the kinematic range of photon virtuality 2 < Q^2 < 160 GeV$^2, and gamma^* p centre-of-mass energy 32 < W < 180 GeV. The results include the Q^2 and W dependence of the gamma^* p --> rho^0 p cross section and the distribution of the squared-four-momentum transfer to the proton. The helicity analysis of the decay-matrix elements of the rho^0 was used to study the ratio of the gamma^* p cross section for longitudinal and transverse photon as a function of Q^2 and W. Finally, an effective Pomeron trajectory was extracted. The results are compared to various theoretical predictions.
description: 58 pages, 31 figures, 12 tables, minor revisions, accepted for publication in PMC Physics A
Применение концепции фрактальной размерности для оценки инвестиционного риска на финансовых рынках
Creators: name: Buła, Rafał
name: Pera, Krystian
Publisher: name: Zenodo
Year: 2015
Subjects: fractal dimension
correlation
investment risk
statistical methods

description: В статье рассматриваются способы измерения уровня риска инвестирования в акции. Авторы предложили модифицированный способ измерения риска, который заключается в том, что в дополнение к классическим мерам (таким как дисперсия, стандартное отклонение, среднее отклонение, меры типа полу-) применяется анализ фрактальной размерности. Статья состоит из двух частей. В первой части сделан обзор классических мер риска. При этом подчеркивается их несовершенство. Далее описывается идея фрактальной размерности, а также представлен синтетический анализ возможности использования этой размерности для квантификации инвестиционного риска. Вторая часть статьи имеет характер эмпирического анализа. Предметом исследований стал риск инвестирования в акции, котирующиеся на Варшавской фондовой бирже и входящие в состав базового индекса WIG 20. Как показано в статье, включение фрактальной размерности в процедуру измерения риска приносит лучшие, более достоверные результаты, чем результаты традиционного подхода к этому вопросу. Принятая в статье гипотеза, по мнению авторов, выдержала проверку. Ключевые слова: инвестиционный риск, фрактальная размерность, статистические методы, стандартное отклонение, корреляция.
Electronic Structures of Fe$_{3-x}V$_x$Si Probed by Photoemission Spectroscopy
Creators: name: Cui, Y. T.
name: Kimura, A.
name: Miyamoto, K.
name: Sakamoto, K.
name: Xie, T.
name: Qiao, S.
name: Nakatake, M.
name: Shimada, K.
name: Taniguchi, M.
name: Fujimori, S. -i.
name: Saitoh, Y.
name: Kobayashi, K.
name: Kanomata, T.
name: Nashima, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The electronic structures of the Heusler type compounds Fe$_{3-x}V$_x$Si in the concentration range between x = 0 and x = 1 have been probed by photoemission spectroscopy (PES). The observed shift of Si 2p core- level and the main valence band structres indicate a chemical potential shift to higher energy with increasing x. It is also clarified that the density of state at Fermi edge is owing to the collaboration of V 3d and Fe 3d derived states. Besides the decrease of the spectral intensity near Fermi edge with increasing x suggests the formation of pseudo gap at large x.
description: 4 pages, 5 figures, 5 references
The $\hatΓ$-genus and a regularization of an $S^1$-equivariant Euler class
Creators: name: Lu, Rongmin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 57R20 (Primary) 40A20, 55P35, 58J20 (Secondary)

description: We show that a new multiplicative genus, in the sense of Hirzebruch, can be obtained by generalizing a calculation due to Atiyah and Witten. We introduce this as the $\hatΓ$-genus, compute its value for some examples and highlight some of its interesting properties. We also indicate a connection with the study of multiple zeta values, which gives an algebraic interpretation for our proposed regularization procedure.
description: 14 pages; version to appear in J. Phys. A
Role of pulsatility on particle dispersion in expiratory flows
Creators: name: Monroe, K.
name: Yao, Y.
name: Lattanzi, A.
name: Raghav, V.
name: Capecelatro, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Expiratory events, such as coughs, are often pulsatile in nature and result in vortical flow structures that transport respiratory particles. In this work, direct numerical simulation (DNS) of turbulent pulsatile jets, coupled with Lagrangian particle tracking of micron-sized droplets, is performed to investigate the role of secondary and tertiary expulsions on particle dispersion and penetration. Fully-developed turbulence obtained from DNS of a turbulent pipe flow is provided at the jet orifice. The volumetric flow rate at the orifice is modulated in time according to a damped sine wave; thereby allowing for control of the number of pulses, duration, and peak amplitude. The resulting vortex structures are analyzed for single-, two-, and three-pulse jets. The evolution of the particle cloud is then compared to existing single-pulse models. Particle dispersion and penetration of the entire cloud is found to be hindered by increased pulsatility. However, the penetration of particles emanating from a secondary or tertiary expulsion are enhanced due to acceleration downstream by vortex structures.
Instability driven by settling and evaporation in a shear flow: a model for asperitas clouds
Creators: name: Ravichandran, S.
name: Govindarajan, Rama
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We study, by direct numerical simulations in two and three dimensions, the instability caused by the settling and evaporation of water droplets out of a cloudy layer saturated with vapour into a dry sub-cloud ambient, under conditions where mammatus clouds were shown to form by [1], but with the addition of background shear. We show that shear changes the type of cloud formation qualitatively, from mammatus-like to a newly identified cloud type called asperitas. Intermediate levels of shear are shown to be needed. Shear suppresses the growth of small-scale perturbations, giving rise to smooth, long-lasting structures, and smaller rates of mixing. Three-dimensionality is shown to make a qualitative difference, unlike in mammatus clouds. We also show that under non-cloud-like conditions, the instability can be very different.
description: 20 pages, 18 figures
Maximized string order parameters in the valence bond solid states of quantum integer spin chains
Creators: name: Tu, Hong-Hao
name: Zhang, Guang-Ming
name: Xiang, Tao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a set of maximized string order parameters to describe the hidden topological order in the valence bond solid states of quantum integer spin-S chains. These optimized string order parameters involve spin-twist angles corresponding to $Z_{S+1}$ rotations around $z$ or $x$-axes, suggesting a hidden $Z_{S+1}\times Z_{S+1}$ symmetry. Our results also suggest that a local triplet excitation in the valence bond solid states carries a $Z_{S+1}$ topological charge measured by these maximized string order parameters.
description: 5 pages, 1 figure
Functional renormalization for quantum phase transitions with non-relativistic bosons
Creators: name: Wetterich, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Astrophysics (astro-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Functional renormalization yields a simple unified description of bosons at zero temperature, in arbitrary space dimension $d$ and for $M$ complex fields. We concentrate on nonrelativistic bosons and an action with a linear time derivative. The ordered phase can be associated with a nonzero density of (quasi) particles $n$. The behavior of observables and correlation functions in the ordered phase depends crucially on the momentum $k_{ph}$, which is characteristic for a given experiment. For the dilute regime $k_{ph}\gtrsim n^{1/d}$ the quantum phase transition is simple, with the same ``mean field'' critical exponents for all $d$ and $M$. On the other hand, the dense regime $k_{ph}\ll n^{1/d}$ reveals a rather rich spectrum of features, depending on $d$ and $M$. In this regime one observes for $d\leq 3$ a crossover to a relativistic action with second time derivatives. This admits order for $d>1$, whereas $d=1$ shows a behavior similar to the low temperature phase of the classical two-dimensional $O(2M)$-models.
description: 31 pages, new references
Nonequilibrium Opinion Spreading on 2D Small-World Networks
Creators: name: Candia, Julián
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Irreversible opinion spreading phenomena are studied on small-world networks generated from 2D regular lattices by means of the magnetic Eden model, a nonequilibrium kinetic model for the growth of binary mixtures in contact with a thermal bath. In this model, the opinion or decision of an individual is affected by those of their acquaintances, but opinion changes (analogous to spin flips in an Ising-like model) are not allowed. Particularly, we focus on aspects inherent to the underlying 2D nature of the substrate, such as domain growth and cluster size distributions. Larger shortcut fractions are observed to favor long-range ordering connections between distant clusters across the network, while the temperature is shown to drive the system across an order-disorder transition, in agreement with previous investigations on related equilibrium spin systems. Furthermore, the extrapolated phase diagram, as well as the correlation length critical exponent, are determined by means of standard finite-size scaling procedures.
description: 14 pages, 7 figures. To appear in JSTAT
Star Formation, Radio Sources, Cooling X-ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096
Creators: name: Donahue, Megan
name: Sun, Ming
name: O'Dea, Christopher P.
name: Voit, G. Mark
name: Cavagnolo, Kenneth W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present deep emission-line imaging taken with the SOAR Optical Imaging Camera of the brightest cluster galaxy (BCG) in the nearby (z=0.035) X-ray cluster 2A0335+096. We analyze long-slit optical spectroscopy, archival VLA, Chandra X-ray, and XMM UV data. 2A0335+096 is a bright, cool-core X-ray cluster, once known as a cooling flow. Within the highly disturbed core revealed by Chandra X-ray observations, 2A0335+096 hosts a highly structured optical emission-line system. The redshift of the companion is within 100 km/s of the BCG and has certainly interacted with the BCG, and is likely bound to it. The comparison of optical and radio images shows curved filaments in H-alpha emission surrounding the resolved radio source. The velocity structure of the emission-line bar between the BCG nucleus and the companion galaxy provides strong evidence for an interaction between the two in the last ~50 Myrs. The age of the radio source is similar to the interaction time, so this interaction may have provoked an episode of radio activity. We estimate a star formation rate of >7 solar mass/yr based on the Halpha and archival UV data, a rate similar to, but somewhat lower than, the revised X-ray cooling rate of 10-30 solar masses/year estimated from XMM spectra by Peterson & workers. The Halpha nebula is limited to a region of high X-ray surface brightness and cool X-ray temperature. The detailed structures of H-alpha and X-ray gas differ. The peak of the X-ray emission is not the peak of H-alpha emission, nor does it lie in the BCG. The estimated age of the radio lobes and their interaction with the optical emission-line gas, the estimated timescale for depletion and accumulation of cold gas, and the dynamical time in the system are all similar, suggesting a common trigger mechanism.
description: Accepted AJ, July 2007 publication. Vol 134, p. 14-25
Ultralocality and Slow Contraction
Creators: name: Ijjas, Anna
name: Sullivan, Andrew P.
name: Pretorius, Frans
name: Steinhardt, Paul J.
name: Cook, William G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the detailed process by which slow contraction smooths and flattens the universe using an improved numerical relativity code that accepts initial conditions with non-perturbative deviations from homogeneity and isotropy along two independent spatial directions. Contrary to common descriptions of the early universe, we find that the geometry first rapidly converges to an inhomogeneous, spatially-curved and anisotropic ultralocal state in which all spatial gradient contributions to the equations of motion decrease as an exponential in time to negligible values. This is followed by a second stage in which the geometry converges to a homogeneous, spatially flat and isotropic spacetime. In particular, the decay appears to follow the same history whether the entire spacetime or only parts of it are smoothed by the end of slow contraction.
description: 27 pages, 10 figures
Application of Hamamatsu MPPC to T2K Neutrino Detectors
Creators: name: Yokoyama, M.
name: Nakaya, T.
name: Gomi, S.
name: Minamino, A.
name: Nagai, N.
name: Nitta, K.
name: Orme, D.
name: Otani, M.
name: Murakami, T.
name: Nakadaira, T.
name: Tanaka, M.
name: Kudenko, Yu.
name: Retiere, F.
name: Vacheret, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A special type of Hamamatsu MPPC, with a sensitive area of 1.3x1.3mm^2 containing 667 pixels with 50x50um^2 each, has been developed for the near neutrino detector in the T2K long baseline neutrino experiment. About 60 000 MPPCs will be used in total to read out the plastic scintillator detectors with wavelength shifting fibers. We report on the basic performance of MPPCs produced for T2K.
description: Contribution to the proceedings of NDIP 2008, Aix-les-Bains, France, June 15-20, 2008
Time-Distance Modelling In A Simulated Sunspot Atmosphere
Creators: name: Moradi, H.
name: Cally, P. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the main uncertainties associated with time-distance measurements is how to interpret observations made in regions of strong magnetic field as isolating the effects of the magnetic field from thermal or sound-speed perturbations has proved to be quite complex. One possible way to decouple these effects is by using a 3D sunspot model, with a surrounding stratified, quiet-Sun atmosphere to model the magneto-acoustic ray propagation, and analyze the resulting ray travel-time perturbations that will directly account for the magnetic field. These artificial travel-time perturbation profiles have provided us with several related but distinct observations: i) that strong surface magnetic fields have a dual effect on helioseismic rays -- increasing their skip distance while at the same time speeding them up considerably compared to their quiet-Sun counterparts, ii) there is a clear and significant frequency dependence of both skip-distance and travel-time perturbations across the simulated sunspot radius, iii) the negative sign and magnitude of these perturbations appears to be directly related to the sunspot magnetic-field strength and inclination, iv) by ``switching off'' the magnetic field inside the sunspot, we are able to completely isolate the thermal component of the travel-time perturbations observed, which is seen to be both opposite in sign and much smaller in magnitude than those measured when the magnetic field is present. These results tend to suggest that purely thermal perturbations are unlikely to be the main effect seen in travel times through sunspots and that strong, near-surface magnetic fields may be directly and significantly altering the magnitude and lateral extent of sound-speed inversions of sunspots made by time-distance helioseismology.
description: 21 Pages, 10 Figures, accepted for publication in Solar Physics
13 New Eclipsing Binaries with Additional Variability in the ASAS Catalogue
Creators: name: Pilecki, B.
name: Szczygieł, D. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 13 new ASAS eclipsing binaries that exhibit additional periodic variability due to pulsations, eclipses with another period or spots. All contact and semi-detached binaries from the ASAS Catalogue were investigated.
description: 10 pages, 12 figures, IBVS 5768
Cloning and expression of Bacillus subtilis ribosomal RNA gene promoters in Escherichia coli
Creators: name: Deneer, Henricus Gerardus
Publisher: name: University of British Columbia
Year: 2010

description: In coli, ribosomal RNA (rRNA) is synthesized in proportion to the cellular growth rate squared, a phenomenon known as growth rate dependent regulation. The promoters of rRNA operons, which consist of two tandemly arranged -35, -10 regions about 120 bp apart, mediate this characteristic form of regulation. To provide insight into how this regulation is achieved and to extend previous observations from studies with E. coli to the rRNA operons of other species, the promoter region from the B. subtilis rrnB operon was cloned onto a transcription fusion plasmid such that the synthesis of chloramphenicol acetytransferase (CAT) was directed by the subtilis promoters. Expression in E. coli showed that CAT specific activity increased in a growth rate dependent manner. The synthesis of CAT mRNA, the CAT mRNA half-life, and plasmid copy number were all measured directly to establish the validity of using CAT specific activity as a measure of promoter function. Only the downstream P2 promoter of the subtilis P1-P2 tandem pair was shown to be growth rate regulated; in contrast, the P1 promoter of the native E. coli rrnB operon was responsive to growth rate. Deletion of an A-T rich sequence upstream of the B. subtilis P1 promoter had no effect on the overall level of P1 or P2 transcription. These results indicated that the general mechanisms conferring growth rate regulation were conserved between coli and B. subtilis, although differences were noted at the level of the individual P1 and P2 promoters. In an attempt to develop a similar operon fusion system for use in B. subtilis a number of bi-functional shuttle vectors were constructed by fusing subtills plasmids to an coli replicon carrying a promoterless catechol 2,3 dioxygenase gene. However, it was found that overexpression of this protein was lethal to E. coli cell3 and rRNA promoters could not be maintained unless their transcriptional activity was curtailed. Furthermore, such bi-f unctional vectors were highly unstable in E. coli or after transfer to subtills. Nevertheless, data obtained using one of these vectors indicated that B. subtilis rRNA promoters did not possess the antitermination function associated with the analogous coli promoters, illustrating an additional functional difference between E. coli and subtilis rRNA promoters.
Observed Properties of Dark Matter on Small Spatial Scales
Creators: name: Wyse, Rosemary F. G.
name: Gilmore, Gerard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The nature of dark matter is one of the outstanding questions of astrophysics. The internal motions of member stars reveal that the lowest luminosity galaxies in the Local Group are the most dark-matter dominated. New large datasets allow one to go further, and determine systematic properties of their dark matter haloes. We summarise recent results, emphasising the critical role of the dwarf spheroidal galaxies in understanding both dark matter and baryonic processes that shape galaxy evolution.
description: To appear in proceedings of IAU Symposium 244, `Dark Galaxies & Lost Baryons', eds J. Davies & M. Disney. Eight pages
Neutrino Masses with a Suitable Parametrization in the PPF 3-3-1 Gauge Model
Creators: name: Palcu, Adrian
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Plausible phenomenological consequences of the well-known Pisano-Pleitez- Frampton 3-3-1 model - such as the neutrino masses - are analyzed within the solution provided by the exact algebraical approach - proposed several years ago by Cotaescu - for gauge models with high symmetries. We prove that a suitable parametrisation in the Higgs sector and a redefinition of the three scalar triplets involved therein can lead to realistic predictions for the lepton mass spectrum, while a minimal number of coupling parameters are employed in the Yukawa sector.
description: 9 pages, no figures, no tables
Far-from-equilibrium transport with constrained resources
Creators: name: Adams, D. A.
name: Schmittmann, B.
name: Zia, R. K. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The totally asymmetric simple exclusion process (TASEP) is a well studied example of far-from-equilibrium dynamics. Here, we consider a TASEP with open boundaries but impose a global constraint on the total number of particles. In other words, the boundary reservoirs and the system must share a finite supply of particles. Using simulations and analytic arguments, we obtain the average particle density and current of the system, as a function of the boundary rates and the total number of particles. Our findings are relevant to biological transport problems if the availability of molecular motors becomes a rate-limiting factor.
description: 14 pages, 7 figures, uses iopart12.clo and iopart.cls
Model-independent features of gravitational waves from bubble collisions
Creators: name: Megevand, Ariel
name: Membiela, Agustin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the gravitational radiation produced by the collisions of bubble walls or thin fluid shells in cosmological phase transitions. Using the so-called envelope approximation, we obtain analytically the asymptotic behavior of the gravitational wave spectrum at low and high frequencies for any phase transition model. The complete spectrum can thus be approximated by a simple interpolation between these asymptotes. We verify this approximation with specific examples. We use these results to discuss the dependence of the spectrum on the time and size scales of the source.
description: 52 pages, 12 figures. v2: we considered two more specific cases (Gaussian and constant rates) and we expanded the discussion on time scales
Hemiphyllodactylus titiwangsaensis
Creators: name: Cobos, Anthony
name: Grismer, L. Lee
name: Wood, Perry L.
name: Quah, Evan S. H.
name: Anuar, Shahrul
name: Muin, Mohd Abdul
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Hemiphyllodactylus
Hemiphyllodactylus titiwangsaensis

description: Taxonomy of Hemiphyllodactylus titiwangsaensis
 Hemiphyllodactylus titiwangsaensis was described by Zug (2010) based on a series of specimens from Gunung Brinchang in Cameron Highlands. Zug (2010) reported that members of this species could be found farther along the Banjaran Titiwangsa at Fraser’s Hill 90 km to the south and Grismer (2011) reports an occurrence of this species even farther south at Genting Highlands, Pahang. Zug’s (2010) description was based on morphological characters wherein he noted, that among the adults of the Cameron Highlands population, there was a broad range of variation in morphology (see Appendix; Zug, [2010]) but that the major diagnostic characters of H. titiwangsaensis were a non-pigmented caecum and gonadal ducts, a continuous precloacal-femoral pore series in males of 17–39 pore-bearing scales, an enlarged mental scale bordering chin scales, enlarged first infralabial scales, a digital lamellar formulae for the hand of normally 3–4–4–4, and for the foot of 4–4–5–5 or 4–5–5–5. Additionally, he noted the dorsal color pattern consisted of dark transverse bands. A series of 35 specimens of H. titiwangsaensis were re-examined here from all three localities (see Appendix Grismer et al., 2013). All measurements were retaken and additional morphological characters were added (Table 5). An ANOVA found no significant differences among any scale counts (P = 0.975; F = 0.0249; F crit = 3.219; Table 6), indicating there are no significant differences in these characters among the northern and southern populations. Additionally, we could find no consistent differences in color pattern between these populations. At this point in time, we consider H. titiwangsaensis to be a species complex in which the northern population from Cameron Highlands is morphologically similar to those from the southern two populations (Genting Highlands and Fraser’s Hill), yet genetically very distinct (12.4 and 12.8%, respectively). Thus, we recognize the southern populations as H. cf. titiwangsaensis until additional morphological data separating them from H. titiwangsaensis sensu stricto can be obtained.
description: Published as part of Cobos, Anthony, Grismer, L. Lee, Wood, Perry L., Quah, Evan S. H., Anuar, Shahrul & Muin, Mohd Abdul, 2016, Phylogenetic relationships of geckos of the Hemiphyllodactylus harterti group, a new species from Penang Island, Peninsular Malaysia, and a likely case of true cryptic speciation, pp. 367-380 in Zootaxa 4107 (3) on page 378, DOI: 10.11646/zootaxa.4107.3.5, http://zenodo.org/record/265560
Discrete nonlinear hyperbolic equations. Classification of integrable cases
Creators: name: Adler, Vsevolod E.
name: Bobenko, Alexander I.
name: Suris, Yuri B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider discrete nonlinear hyperbolic equations on quad-graphs, in particular on the square lattice. The fields are associated to the vertices and an equation Q(x_1,x_2,x_3,x_4)=0 relates four fields at one quad. Integrability of equations is understood as 3D-consistency. The latter is a possibility to consistently impose equations of the same type on all the faces of a three-dimensional cube. This allows to set these equations also on multidimensional lattices Z^N. We classify integrable equations with complex fields x, and Q affine-linear with respect to all arguments. The method is based on analysis of singular solutions.
description: 19 pages
A Kinematic Bottleneck Approach For Pose Regression of Flexible Surgical Instruments directly from Images
Creators: name: Sestini, Luca
name: Rosa, Benoit
name: De Momi, Elena
name: Ferrigno, Giancarlo
name: Padoy, Nicolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: 3-D pose estimation of instruments is a crucial step towards automatic scene understanding in robotic minimally invasive surgery. Although robotic systems can potentially directly provide joint values, this information is not commonly exploited inside the operating room, due to its possible unreliability, limited access and the time-consuming calibration required, especially for continuum robots. For this reason, standard approaches for 3-D pose estimation involve the use of external tracking systems. Recently, image-based methods have emerged as promising, non-invasive alternatives. While many image-based approaches in the literature have shown accurate results, they generally require either a complex iterative optimization for each processed image, making them unsuitable for real-time applications, or a large number of manually-annotated images for efficient learning. In this paper we propose a self-supervised image-based method, exploiting, at training time only, the imprecise kinematic information provided by the robot. In order to avoid introducing time-consuming manual annotations, the problem is formulated as an auto-encoder, smartly bottlenecked by the presence of a physical model of the robotic instruments and surgical camera, forcing a separation between image background and kinematic content. Validation of the method was performed on semi-synthetic, phantom and in-vivo datasets, obtained using a flexible robotized endoscope, showing promising results for real-time image-based 3-D pose estimation of surgical instruments.
From chiral vibration to static chirality in ^{135}Nd
Creators: name: Mukhopadhyay, S.
name: Almehed, D.
name: Garg, U.
name: Frauendorf, S.
name: Li, T.
name: Rao, P. V. Madhusudhana
name: Wang, X.
name: Ghugre, S. S.
name: Carpenter, M. P.
name: Gros, S.
name: Hecht, A.
name: Janssens, R. V. F.
name: Kondev, F. G.
name: Lauritsen, T.
name: Seweryniak, D.
name: Zhu, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electromagnetic transition probabilities have been measured for the intra- and inter-band transitions in the two sequences in the nucleus ^{135}Nd that were previously identified as a composite chiral pair of rotational bands. The measurements are in good agreement with results of a new combination of TAC and RPA calculations. The chiral character of the bands is affirmed and it is shown that their behavior is associated with a transition from a vibrational into a static chiral regime.
description: Accepted for publication in the Physical Review Letters. Small modifications to fit the length limits of the journal. 10 pages, 4 figures
Mass production test of Hamamatsu MPPC for T2K neutrino oscillation experiment
Creators: name: Yokoyama, M.
name: Nakaya, T.
name: Gomi, S.
name: Minamino, A.
name: Nagai, N.
name: Nitta, K.
name: Orme, D.
name: Otani, M.
name: Murakami, T.
name: Nakadaira, T.
name: Tanaka, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In the T2K near neutrino detectors, about 60 000 Hamamatsu Multi-Pixel Photon Counters (MPPCs) will be used. The mass production of MPPC has started in February 2008.In order to perform quality assurance and to characterize each device, we have developed an MPPC test system. For each MPPC, gain, breakdown voltage, noise rate, photo detection efficiency, and cross-talk and after-pulse rate are measured as functions of the bias voltage and temperature. The design of the test system and the measurement procedure are described.
description: Contribution to the proceedings of NDIP 2008, Aix-les-Bains, France, June 15-20, 2008
Minimal Walking on the Lattice
Creators: name: Catterall, Simon
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We provide the first evidence of a walking dynamics for two color lattice Yang-Mills theory with two Dirac flavors in the symmetric representation of the gauge group.
description: 18 pages, 12 figures
A new non-perturbative time-dependent string configuration
Creators: name: Alexandre, Jean
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A time-dependent bosonic string configuration is discussed, in graviton and dilaton backgrounds, leading to Weyl-symmetry beta-functions which are homogeneous in X^0, to any order in alpha'. As a consequence, a string reparametrization can always be implemented, such that beta functions can be cancelled, to any order in alpha'. This non-perturbative conformal invariance is valid for any target space dimension, and leads to a power law expanding Universe, for which the power vanishes if a specific relation between the dimension and dilaton amplitude holds. Finally, D=4 is the minimum dimension (in the case of a spherical world sheet) for which this configuration is consistent with a Wick rotation in a Minkowski target space.
description: Talk given at PASCOS-07
Modal-Adaptive Gated Recoding Network for RGB-D Salient Object Detection
Creators: name: Zhu, Jinchao
name: Zhang, Xiaoyu
name: Fang, Xian
name: Dong, Feng
name: Yu, Qiu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The multi-modal salient object detection model based on RGB-D information has better robustness in the real world. However, it remains nontrivial to better adaptively balance effective multi-modal information in the feature fusion phase. In this letter, we propose a novel gated recoding network (GRNet) to evaluate the information validity of the two modes, and balance their influence. Our framework is divided into three phases: perception phase, recoding mixing phase and feature integration phase. First, A perception encoder is adopted to extract multi-level single-modal features, which lays the foundation for multi-modal semantic comparative analysis. Then, a modal-adaptive gate unit (MGU) is proposed to suppress the invalid information and transfer the effective modal features to the recoding mixer and the hybrid branch decoder. The recoding mixer is responsible for recoding and mixing the balanced multi-modal information. Finally, the hybrid branch decoder completes the multi-level feature integration under the guidance of an optional edge guidance stream (OEGS). Experiments and analysis on eight popular benchmarks verify that our framework performs favorably against 9 state-of-art methods.
Angular Diameters of the G Subdwarf $μ$ Cassiopeiae A and the K Dwarfs $σ$ Draconis and HR 511 from Interferometric Measurements with the CHARA Array
Creators: name: Boyajian, Tabetha S.
name: McAlister, Harold A.
name: Baines, Ellyn K.
name: Gies, Douglas R.
name: Henry, Todd
name: Jao, Wei-Chun
name: O'Brien, David
name: Raghavan, Deepak
name: Touhami, Yamina
name: Brummelaar, Theo A. ten
name: Farrington, Chris
name: Goldfinger, P. J.
name: Sturmann, Laszlo
name: Sturmann, Judit
name: Turner, Nils H.
name: Ridgway, Stephen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the longest baselines of the CHARA Array, we have measured the angular diameter of the G5 V subdwarf $μ$ Cas A, the first such determination for a halo population star. We compare this result to new diameters for the higher metallicity K0 V stars, $σ$ Dra and HR 511, and find that the metal-poor star, $μ$ Cas A, has an effective temperature ($T_{\rm eff}=5297\pm32$ K), radius ($R=0.791\pm0.008 R_{\rm \odot}$), and absolute luminosity ($L=0.442\pm0.014 L_{\rm \odot}$) comparable to the other two stars with later spectral types. We show that stellar models show a discrepancy in the predicted temperature and radius for $μ$ Cas A, and we discuss these results and how they provide a key to understanding the fundamental relationships for stars with low metallicity.
description: Accepted for publication in The Astrophysical Journal
jc.2020-03262 Supplemental Data.pdf
Creators: name: Nicholson, Rebekah
name: Poss, Annelise
name: J. Alan Maschek
name: Cox, James E.
name: Hopkins, Paul N.
name: Hunt, Steven C.
name: Playdon, Mary C.
name: Holland, William L.
name: Summers, Scott A.
Publisher: name: figshare
Year: 2021
Subjects: subject: 60104 Cell Metabolism
subject: FOS: Biological sciences
subject: 60408 Genomics

description: Supplemental data for "Characterizing a common CERS2 polymorphism in a mouse model of metabolic disease and in subjects from the Utah CAD Study."
Coexistence of two order parameters and a pseudogaplike feature in the iron-based superconductor LaFeAsO_(1-x)F_x
Creators: name: Gonnelli, R. S.
name: Daghero, D.
name: Tortello, M.
name: Ummarino, G. A.
name: Stepanov, V. A.
name: Kim, J. S.
name: Kremer, R. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The nature and value of the order parameters (OPs) in the superconducting Fe-based oxypnictides REFeAsO_(1-x)F_x (RE = rare earth) are a matter of intense debate, also connected to the pairing mechanism which is probably unconventional. Point-contact Andreev-reflection experiments on LaFeAsO_(1-x)F_x gave us direct evidence of three energy scales in the superconducting state: a nodeless superconducting OP, Delta1 = 2.8-4.6 meV, which scales with the local Tc of the contact; a larger unconventional OP that gives conductance peaks at 9.8-12 meV, apparently closes below Tc and decreases on increasing the Tc of the contact; a pseudogaplike feature (i.e. a depression in the conductance around zero bias), that survives in the normal state up to T* ~ 140 K (close to the Neel temperature of the undoped compound), which we associate to antiferromagnetic spin fluctuations (AF SF) coexisting with superconductivity. These findings point toward a complex, unconventional nature of superconductivity in LaFeAsO_(1-x)F_x.
description: 19 pages, 12 figures - one figure and some insets added, minor changes to the text
Semi-soft Nematic Elastomers and Nematics in Crossed Electric and Magnetic Fields
Creators: name: Ye, Fangfu
name: Mukhopadhyay, Ranjan
name: Stenull, Olaf
name: Lubensky, T. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Nematic elastomers with a locked-in anisotropy direction exhibit semi-soft elastic response characterized by a plateau in the stress-strain curve in which stress does not change with strain. We calculate the global phase diagram for a minimal model, which is equivalent to one describing a nematic in crossed electric and magnetic fields, and show that semi-soft behavior is associated with a broken symmetry biaxial phase and that it persists well into the supercritical regime. We also consider generalizations beyond the minimal model and find similar results.
description: 4 pages, 3 figures
Stochastic model for nucleosome sliding in the presence of DNA ligands
Creators: name: Mollazadeh-Beidokhti, Laleh
name: Deseigne, Julien
name: Lacoste, David
name: Mohammad-Rafiee, Farshid
name: Schiessel, Helmut
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Heat-induced mobility of nucleosomes along DNA is an experimentally well-studied phenomenon. A recent experiment shows that the repositioning is modified in the presence of minor-groove binding DNA ligands. We present here a stochastic three-state model for the diffusion of a nucleosome along DNA in the presence of such ligands. It allows us to describe the dynamics and the steady state of such a motion analytically. The analytical results are in excellent agreement with numerical simulations of this stochastic process.With this model, we study the response of a nucleosome to an external force and how it is affected by the presence of ligands.
description: 10 pages, 8 figures, submitted to Eur. Phys. J. E
Mapping Porous Borders, A Choreography - Museum of Memory and Human Rights, Santiago, Chile
Creators: name: Longley, Alys
name: Corvalán-Pincheira, Máximo
name: Parra, Macarena Campbell
Publisher: name: The University of Auckland
Year: 2021
Subjects: subject: 190504 Performance and Installation Art
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 190403 Dance

description: Alys Longley, Macarena Campbell-Parra and Máximo Corvalán-Pincheira participated in the 18 Horas Entre Nosotros project in 2018, with funding from the University of Auckland, NZ, to work in both Santiago and Auckland over November and December. In Santiago we produced the first version of Mapeo de Bordes Porosos, at the Museo de la Memoria - Museum of Memory and Human Rights and two weeks later we created the second version of this work at the Old Folks Association Hall in Auckland, NZ. In 2019 this developed into the solo work Extracción de Lealtades at the School of the Art Institute Chicago, and El Otro País Que Eres in a site-based work on Avenida Manuel Montt, Santiago.
A Light-Based Device for Solving the Hamiltonian Path Problem
Creators: name: Oltean, Mihai
Publisher: name: arXiv
Year: 2007
Subjects: subject: Hardware Architecture (cs.AR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In this paper we suggest the use of light for performing useful computations. Namely, we propose a special device which uses light rays for solving the Hamiltonian path problem on a directed graph. The device has a graph-like representation and the light is traversing it following the routes given by the connections between nodes. In each node the rays are uniquely marked so that they can be easily identified. At the destination node we will search only for particular rays that have passed only once through each node. We show that the proposed device can solve small and medium instances of the problem in reasonable time.
description: 11 pages, Unconventional Computation conference, 2006
The Historical Representation of Place in the Military Base Town of Koza: The "Reassessment" of US Military Presence as a Developmental Resource
Creators: name: Yamazaki, Takashi
Publisher: name: Faculty of Fine and Applied Arts, Chulalongkorn University
Year: 2010
Subjects: Developmental Resource, Representation, Place, Military Base Town, Koza

description: -, 1, Journal of Urban Culture Research
Global Players in Transition: A Comparative Analysis of Peacekeeping Strategies by the USA and Russia with Focus on the Middle East Region
Creators: name: Delly
Publisher: name: Zenodo
Year: 2023

description: This research paper critically examines the dynamic landscape of contemporary global peacekeeping efforts, meticulously scrutinizing the divergent strategies employed by key stakeholders, namely the United States and Russia. Subsequently, by weaving together historical context, prevailing policy frameworks, and the latest geopolitical transformations in the Middle East, the research sheds insights on the distinctive approaches adopted by the USA and Russia in peacekeeping and fostering stability in a region of paramount importance.
Prospects for measuring the moment of inertia of pulsar PSR J0737-3039A
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Here we consider the possibility of measuring at 10% or better the moment of inertia I of the J0737-3039A via the gravitomagnetic spin-orbit periastron precession. It turns out that the prospect of measuring the moment of inertia of PSR J0737-3039A at 10% accuracy or better seems unlikely given the limitations to the precision with which the system's basic binary and post-Keplerian parameters can be measured via radio timing.
description: LaTex2e, 5 pages (Elsevier two-column style), 1 table, no figures. To appear in New Astronomy
Cultural ideology and the lanscape of Confucian China : the traditional si he yuan
Creators: name: Samuels, Carmencita Marioano
Publisher: name: University of British Columbia
Year: 2010

description: The cultural geography and architectural history of China has long been a subject of separate and distinguished interest and research, the one focusing primarily on the vernacular landscapes of peasants and folk societies, and the other focusing predominantly on the grand architectural monuments of empire and religious orders. Seldom has the impetus for both interests been combined so that the cultural life of the people, rich and poor, powerful and powerless alike, and the history of the architectural environment are linked as products and reflections of one another. In the long history of the development of the built environment of China, however, at least one component of the landscape has always figured especially prominent in the interface between society and architecture, namely the vernacular and the elite courtyard compound house. The ideal and the actuality of the courtyard house reveals itself in history, in literature, and on the land as a hardened depository of the most essential values, beliefs and codes of social behavior in Confucian China. Its extraordinary durability and conformity, and its eccentricities were everywhere and almost always a statement about the integrity of the Confucian worldview. Moreover, it was a statement on behalf of an official and encoded cultural and state ideology and its essential li or "proprieties." Its durability was at one with the durability of a total Confucian and Imperial state-sponsored ideology and system. Its change and its eccentricities were, like the ideology and system it housed, grammatical conjugations on a well established and legitimate theme, filled with verve and excitement, but always with an intrinsic order predicated on the logic of the Confucian cultural ideology and state system. It is the principal aim of this study to explore the linkage between culture and architecture in the human landscape of Confucian China as revealed by the courtyard compound. The main thesis of the study is that the built environment and the courtyard compound in particular reveals itself as a Confucian social landscape the meanings of which are apparent in its symbology, in the assignment of status places within its boundaries, and in its overall design, form and structure. In this way too, the study is a study in the social fabric and ideological commitments of a once powerful tradition whose hold on the landscape was virtually without exception, but which has now dissipated or disappeared into the furnaces and highrise structures of the industrializing and revolutionary ideologies of the twentieth century.
Open Workflows with the TOPFARM ecosystem
Creators: name: Réthoré, Pierre-Elouan
Publisher: name: Zenodo
Year: 2019
Subjects: Wind Energy
Open Science
TOPFARM
Wind Farm Layout Optimization

description: Presentation of the open science workflow to systematically publish and disseminate the various digital research assets generated by the TOPFARM team and maximize its scientific impact on society.