cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Baryon Acoustic Oscillations in 2D: Modeling Redshift-space Power Spectrum from Perturbation Theory
Creators: name: Taruya, Atsushi
name: Nishimichi, Takahiro
name: Saito, Shun
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an improved prescription for matter power spectrum in redshift space taking a proper account of both the non-linear gravitational clustering and redshift distortion, which are of particular importance for accurately modeling baryon acoustic oscillations (BAOs). Contrary to the models of redshift distortion phenomenologically introduced but frequently used in the literature, the new model includes the corrections arising from the non-linear coupling between the density and velocity fields associated with two competitive effects of redshift distortion, i.e., Kaiser and Finger-of-God effects. Based on the improved treatment of perturbation theory for gravitational clustering, we compare our model predictions with monopole and quadrupole power spectra of N-body simulations, and an excellent agreement is achieved over the scales of BAOs. Potential impacts on constraining dark energy and modified gravity from the redshift-space power spectrum are also investigated based on the Fisher-matrix formalism. We find that the existing phenomenological models of redshift distortion produce a systematic error on measurements of the angular diameter distance and Hubble parameter by 1~2%, and the growth rate parameter by ~5%, which would become non-negligible for future galaxy surveys. Correctly modeling redshift distortion is thus essential, and the new prescription of redshift-space power spectrum including the non-linear corrections can be used as an accurate theoretical template for anisotropic BAOs.
description: 18 pages, 10 figures
Perlomyia sinuata Sivec & Stark 2012, sp. n.
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia sinuata

description: Perlomyia sinuata sp. n. (Fig. 24-27) Material examined. Holotype ♂, Japan, Nara Prefecture, Takami River, Aritoshi, 15 April 1995, Y. Isobe (PMSL). Paratypes: 2♂, 2♀, same data (PMSL). Male. Forewing length 8 mm. General color dark brown to black. Epiproct sinuate in lateral aspect (Fig. 26). Tergum 9 strongly narrowed mesally (Fig. 24). Tergum 10 without small knobs. Cerci somewhat globular in dorsal aspect, but bearing a small dorsobasal lobe in lateral aspect (Fig. 26); terminal spine absent. Paraprocts fused into a broad, thick process, curved slightly dorsad and narrowly rounded apically (Fig. 26). Sternum 9 apex slender (Fig. 25), not reaching apex of paraprocts and curved only slightly dorsad. Vesicle body almost circular, attached to sternum 9 by a slender stalk (Fig. 25). Female. Forewing length 9 mm. Posterior margin of sternum 7 enlarged, sclerotized and strongly produced over base of sternum 8 as a narrowed projection (Fig. 27). Sternum 8 with a short, wide median sclerite, narrowly divided, or notched by membrane; wing-like sclerites slightly longer than, and about as wide as median sclerites (Fig. 27). Larva. Unknown. Etymology. The species name refers to the sinuate anterior margin of the epiproct in lateral aspect. Diagnosis. Among the Japanese Perlomyia which lack knobs on male tergum 10, this species is the only one in which the epiproct has a sinuate profile.
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on pages 101-102, DOI: 10.5281/zenodo.4760796
Perlomyia Banks 1906
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia

description: Key to Japanese Male Perlomyia (P. gifuensis not included) 1 Abdominal terga 8 or 9 with a median lobe (Figs. 1, 19) ………………………………………………. 2 1’ Abdominal terga 8 or 9 without median lobe (Fig. 4) ……………………………………………. 3 2 Abdominal tergum 8 with a median lobe (Fig. 1); paraprocts gradually narrowed in lateral aspect from midlength to apex (Fig. 3); cerci with a small terminal spine (Fig. 3) ……………………. P. ainu 2’ Abdominal tergum 9 with a median lobe (Fig. 19); paraprocts apically truncate in lateral aspect (Fig. 21); cerci without terminal spine (Fig. 21) ……………………………………………... P. kersti 3 Tergum 10 bearing a pair of small knobs (Figs. 4, 12, 16) ………………………..…………………… 4 3’ Tergum 10 without small knobs (Figs. 8, 24) ……………………………………………………... 7 4 Cerci bearing a long, slender, terminal spine, prominent in dorsal and lateral aspect (Figs. 16, 18) …………………………………………... P. kappa 4’ Cerci without terminal spine, or with, at most a minute projection, apices appearing truncate, rounded or notched in dorsal aspect (Figs. 4, 12) ……………………………………………………… 5 5 Apex of epiproct bent forward abruptly as a small triangular tab (Fig. 6); cerci apically truncate (Fig. 4) ………………………………………… P. honshu 5’ Apex of epiproct gradually narrowed to an acute or rounded tip (Fig. 14); cerci apically rounded or notched (Fig. 12)..……………………………….. 6 6 Cercal apices rounded in dorsal aspect (Fig. 12), without terminal notch or minute spine; intersegmental membrane between terga 9-10 without median hairy patch (Fig. 12) …... P. iwate 6’ Cercal apices with a shallow posterolateral notch and small spine; intersegmental membrane between terga 9-10 with a median hairy patch ………….…..……………………………… P. parva 7 Epiproct apex truncate in lateral aspect (Fig. 10); cerci with a small terminal spine (Figs. 8, 10) ……………………………………………… P. isobeae 7’ Epiproct sinuate in lateral aspect, tip not truncate (Fig. 26); cerci without terminal spine (Figs. 24-26) ……………………………………………... P. sinuata
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 102, DOI: 10.5281/zenodo.4760796
Long-term effects of timber harvesting on hemicellulolytic microbial communities in North American coniferous forest soils
Creators: name: Leung, Hilary
Publisher: name: University of British Columbia
Year: 2014

description: Forests are essential for maintaining global climate and biodiversity, with industrial applications vital to the world economy. Forest soils are inhabited by a highly diverse community of macro- and microorganisms which are responsible for a variety of fundamental ecosystem services such as decomposition, and nutrient cycling. The effects of forest disturbance on soil microorganisms specific to these key processes have yet to be studied thoroughly. Bearing in mind the importance of forest soil organisms, I have identified and investigated the long-term effects of forest disturbance by timber harvesting on bacterial and fungal populations that degrade hemicellulose using molecular techniques coupled to stable-isotope probing (SIP) with ¹³C-hemicellulose. I identified 104 putatively hemicellulolytic bacterial operational taxonomic units (OTUs) and 52 putatively hemicellulolytic fungal OTUs. Based on analysis of ¹³C-enriched phospholipid fatty acids and DNA, harvesting resulted in long-term changes in relative abundances of putatively hemicellulolytic bacterial and fungal populations. Although harvesting resulted in long-term changes in these populations, no statistically significant differences in potential hemicellulolytic activity of the soils was observed, suggesting functional redundancy in this fundamental ecosystem process. Additionally, I identified Methylibium, a genus of facultative methylotrophs as a novel putative hemicellulose degrader. This study is the first to extensively survey both bacterial and fungal soil microorganisms specific to hemicellulose degradation using stable-isotope probing, and to provide evidence for long-term effects of timber harvesting on these populations. These results contribute towards the strategic management of forest ecosystems, and the identification of novel hemicellulolytic organisms in this study will pave new roads for industrial applications of cellulolytic and hemicellulolytic enzymes.
Bistability, softening, and quenching of magnetic moments in Ni-filled carbon nanotubes
Creators: name: Diniz, Eduardo M.
name: Nunes, Ricardo W.
name: Chacham, Hélio
name: Mazzoni, Mário S. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The authors apply first-principles calculations to investigate the interplay between structural, electronic, and magnetic properties of nanostructures composed of narrow nanotubes filled with metallic nanowires. The focus is on the structural and magnetic responses of Ni-filled nanotubes upon radial compression. Interestingly, metastable flattened structures are identified, in which radially deformed nanotubes are stabilized by the interactions with the encapsulated wire. Moreover, our results indicate a quenching of the magnetic moment of the wire upon compression, as a result of the transfer of charge from the $s$ to the $d$ orbitals of the atoms in the wire.
description: 4 pages, 4 figures
Magnetic order and paramagnetic phases in the quantum J1-J2-J3 honeycomb model
Creators: name: Reuther, Johannes
name: Abanin, Dmitry
name: Thomale, Ronny
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent work shows that a quantum spin liquid can arise in realistic fermionic models on a honeycomb lattice. We study the quantum spin-1/2 Heisenberg honeycomb model, considering couplings J1, J2, and J3 up to third nearest neighbors. We use an unbiased pseudofermion functional renormalization group method to compute the magnetic susceptibility and determine the ordered and disordered states of the model. Aside from antiferromagnetic, collinear, and spiral order domains, we find a large paramagnetic region at intermediate J2 coupling. For larger J2 within this domain, we find a strong tendency to staggered dimer ordering, while the remaining paramagnetic regime for low J2 shows only weak plaquet and staggered dimer response. We suggest this regime to be a promising region to look for quantum spin liquid states when charge fluctuations would be included.
description: 4 pages, 3 figures
On knottings in the physical Hilbert space of LQG as given by the EPRL model
Creators: name: Bahr, Benjamin
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the EPRL spin foam amplitude for arbitrary embedded two-complexes. Choosing a definition of the face- and edge amplitudes which lead to spin foam amplitudes invariant under trivial subdivisions, we investigate invariance properties of the amplitude under consistent deformations, which are deformations of the embedded two-complex where faces are allowed to pass through each other in a controlled way. Using this surprising invariance, we are able to show that in the physical Hilbert space as defined by the sum over all spin foams contains no knotting classes of graphs anymore.
description: 22 pages, 14 figures
Additional file 1 of Hookworm infection in central China: morphological and molecular diagnosis
Creators: name: Xu, Fang Fang
name: Niu, Yu Fei
name: Chen, Wen Qing
name: Liu, Sha Sha
name: Li, Jing Ru
name: Jiang, Peng
name: Wang, Zhong Quan
name: Cui, Jing
name: Zhang, Xi
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Hookworm infections in the patient’s small bowel, as observed with endoscopy.
Perlomyia collaris Banks 1906
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia collaris
Perlomyia gifuensis

description: P. collaris Banks, 1906 Western North America P. gifuensis (Kohno, 1965) Japan P. gifuensis (Kohno, 1965) Japan
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 102, DOI: 10.5281/zenodo.4760796
description: {"references": ["Banks, N. 1906. New species of Perlidae. Canadian Entomologist, 38: 335 - 338.", "Kohno, M. 1965. Order Plecoptera. Pp. 22 - 23, 41 - 44, pls. 21 - 22 in Asahina, S. [editor]. Iconographia insectorum Japonicorum colore naturali edita, Volume 3. Hokuryukan Publishing Co., Tokyo. 590 pp. [Japanese]"]}
Arrays of Ag split-ring resonators coupled to InGaAs single-quantum-well gain
Creators: name: Meinzer, Nina
name: Ruther, Matthias
name: Linden, Stefan
name: Soukoulis, Costas M.
name: Khitrova, Galina
name: Hendrickson, Joshua
name: Olitsky, Joshua D.
name: Gibbs, Hyatt M.
name: Wegener, Martin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study arrays of silver split-ring resonators operating at around 1.5-μm wavelength coupled to an MBE-grown single 12.7-nm thin InGaAs quantum well separated only 4.8 nm from the wafer surface. The samples are held at liquid-helium temperature and are pumped by intense femtosecond optical pulses at 0.81-μm center wavelength in a pump-probe geometry. We observe much larger relative transmittance changes (up to about 8%) on the split-ring-resonator arrays as compared to the bare quantum well (not more than 1-2%). We also observe a much more rapid temporal decay component of the differential transmittance signal of 15 ps for the case of split-ring resonators coupled to the quantum well compared to the case of the bare quantum well, where we find about 0.7 ns. The latter observation is ascribed to the Purcell effect that arises from the evanescent coupling of the split-ring resonators to the quantum-well gain. All experimental results are compared with a recently introduced analytical toy model that accounts for this evanescent coupling, leading to excellent overall qualitative agreement.
Perlomyia insularis
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia insularis

description: P. insularis (Zhiltzova, 1975) Russia
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 102, DOI: 10.5281/zenodo.4760796
description: {"references": ["Zhiltzova, L. A. 1975. Rhopalopsole, a new for the USSR genus of stoneflies (Plecoptera, Leuctridae). Zoologischesky Zhurnal, 54: 221 - 230. [Russian]"]}
Additional file 2 of Hookworm infection in central China: morphological and molecular diagnosis
Creators: name: Xu, Fang Fang
name: Niu, Yu Fei
name: Chen, Wen Qing
name: Liu, Sha Sha
name: Li, Jing Ru
name: Jiang, Peng
name: Wang, Zhong Quan
name: Cui, Jing
name: Zhang, Xi
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S2. Morphological characteristic of dorsal ray of Necator americanus.
Additional file 3 of Hookworm infection in central China: morphological and molecular diagnosis
Creators: name: Xu, Fang Fang
name: Niu, Yu Fei
name: Chen, Wen Qing
name: Liu, Sha Sha
name: Li, Jing Ru
name: Jiang, Peng
name: Wang, Zhong Quan
name: Cui, Jing
name: Zhang, Xi
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Table S1. Geographical distribution of ancylostomiasis in Henan Province of central China.
Economic feasibility of lignocellulosic ethanol production with enzyme recycling
Creators: name: Rosales Calderon, Oscar
Publisher: name: University of British Columbia
Year: 2014

description: Ethanol produced from lignocellulose is one of the most promising biofuels. However, the technology to produce lignocellulosic ethanol is still under development and needs to be improved to become economically viable. Enzymatic hydrolysis is one of the most expensive process stages, primarily due to high enzyme costs. Consequently, two cost reduction strategies were studied: optimization of hydrolysis conditions and enzyme recycle by adsorption. To optimize enzymatic hydrolysis, the changes in concentration of cellulases during the reaction must be determined. Protein concentration changes under hydrolysis conditions for Celluclast 1.5L and Novozyme 188, were studied in the absence of substrate. Novozyme 188 protein concentration decreased by 55 to 64% at 50°C after 92 h. A model describing Novozyme 188 protein concentration changes was developed and used to determine free and adsorbed cellulases concentrations. Glucose and xylose yields (58 to 89% conversion) during enzymatic hydrolysis were modeled as a function of enzyme loading, time, lignin content and solids concentration. The proposed model successfully describes hydrolysis of substrates with different lignin contents, linking pretreatment and hydrolysis. The effect of lignin content, enzyme loading and hydrolysis time on enzyme recovery was evaluated, achieving 0 to 35% cellulases recycled. A mass balance of the enzyme recovery process was built and used to achieve a uniform production of sugar. Based on experimental data and the proposed models, the production of ethanol with and without enzyme recycling was simulated in AspenPlus. The ethanol production process at different operating conditions was economically evaluated. The economic analysis showed that raw material expenses determine production costs, where biomass, caustic and enzyme expenses are the major contributors to the operating cost. The lowest production costs ($1.86 and $2.13/ kg ethanol) were obtained at low enzyme loadings and mild pretreatment conditions. Sugar losses at severe pretreatment conditions have a significant negative effect on production costs: severe conditions increased production cost by 18 to 23%. Therefore, optimal hydrolysis conditions must be determined considering the entire process. The implementation of the enzyme recycling process decreased production costs up to 14% depending on operating conditions, demonstrating the potential benefits of the enzyme recycling technology.
Perlomyia gifuensis
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia gifuensis

description: P. gifuensis (Kohno, 1965) Japan
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 102, DOI: 10.5281/zenodo.4760796
description: {"references": ["Kohno, M. 1965. Order Plecoptera. Pp. 22 - 23, 41 - 44, pls. 21 - 22 in Asahina, S. [editor]. Iconographia insectorum Japonicorum colore naturali edita, Volume 3. Hokuryukan Publishing Co., Tokyo. 590 pp. [Japanese]"]}
The coupling of topology and inflation in Noncommutative Cosmology
Creators: name: Marcolli, Matilde
name: Pierpaoli, Elena
name: Teh, Kevin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that, in a model of modified gravity based on the spectral action functional, there is a nontrivial coupling between cosmic topology and inflation, in the sense that the shape of the possible slow-roll inflation potentials obtained in the model from the nonperturbative form of the spectral action are sensitive not only to the geometry (flat or positively curved) of the universe, but also to the different possible non-simply connected topologies. We show this by explicitly computing the nonperturbative spectral action for some candidate flat cosmic topologies given by Bieberbach manifolds and showing that the resulting inflation potential differs from that of the flat torus by a multiplicative factor, similarly to what happens in the case of the spectral action of the spherical forms in relation to the case of the 3-sphere. We then show that, while the slow-roll parameters differ between the spherical and flat manifolds but do not distinguish different topologies within each class, the power spectra detect the different scalings of the slow-roll potential and therefore distinguish between the various topologies, both in the spherical and in the flat case.
description: 30 pages, LaTeX, 11 pdf figures
Theory of Anisotropic Whispering Gallery Resonators
Creators: name: Ornigotti, Marco
name: Aiello, Andrea
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An analytic solution for an uniaxial spherical resonator is presented using the method of Debye potentials. This serves as a starting point for the calculation of whispering gallery modes (WGM) in such a resonator. Suitable approximations for the radial functions are discussed in order to best characterize WGMs. The characteristic equation and its asymptotic expansion for the anisotropic case is also discussed, and an analytic formula with a precision of the order $O[ν^{-1}]$ is also given. Our careful treatment of both boundary conditions and asymptotic expansions makes the present work a particularly suitable platform for a quantum theory of whispering gallery resonators.
description: 16 pages, 13 figures, submitted to PRA
Impossibility of independence amplification in Kolmogorov complexity theory
Creators: name: Zimand, Marius
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: The paper studies randomness extraction from sources with bounded independence and the issue of independence amplification of sources, using the framework of Kolmogorov complexity. The dependency of strings $x$ and $y$ is ${\rm dep}(x,y) = \max\{C(x) - C(x \mid y), C(y) - C(y\mid x)\}$, where $C(\cdot)$ denotes the Kolmogorov complexity. It is shown that there exists a computable Kolmogorov extractor $f$ such that, for any two $n$-bit strings with complexity $s(n)$ and dependency $α(n)$, it outputs a string of length $s(n)$ with complexity $s(n)- α(n)$ conditioned by any one of the input strings. It is proven that the above are the optimal parameters a Kolmogorov extractor can achieve. It is shown that independence amplification cannot be effectively realized. Specifically, if (after excluding a trivial case) there exist computable functions $f_1$ and $f_2$ such that ${\rm dep}(f_1(x,y), f_2(x,y)) \leq β(n)$ for all $n$-bit strings $x$ and $y$ with ${\rm dep}(x,y) \leq α(n)$, then $β(n) \geq α(n) - O(\log n)$.
Perlomyia secunda Zhiltzova 1976
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia secunda

description: P. secunda (Zapekina-Dulkeit, 1955) Russia
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 103, DOI: 10.5281/zenodo.4760796
description: {"references": ["Zapekina-Dulkeit, J. I. 1955. Plecopteren aus dem"]}
UWISH2 -- The UKIRT Widefield Infrared Survey for H2
Creators: name: D.
name: Froebrich
name: J., C.
name: Davis
name: G.
name: Ioannidis
name: M., T.
name: Gledhill
name: M.
name: Takami
name: A.
name: Chrysostomou
name: J.
name: Drew
name: J.
name: Eislöffel
name: A.
name: Gosling
name: R.
name: Gredel
name: J.
name: Hatchell
name: W., K.
name: Hodapp
name: N., M. S.
name: Kumar
name: W., P.
name: Lucas
name: H.
name: Matthews
name: G., M.
name: Rawlings
name: D., M.
name: Smith
name: B.
name: Stecklum
name: P., W.
name: Varricatt
name: T., H.
name: Lee
name: S., P.
name: Teixeira
name: A., C.
name: Aspin
name: T.
name: Khanzadyan
name: J.
name: Karr
name: -J., H.
name: Kim
name: -C., B.
name: Koo
name: J., J.
name: Lee
name: -H., Y.
name: Lee
name: Y., T.
name: Magakian
name: A., T.
name: Movsessian
name: H., E.
name: Nikogossian
name: S., T.
name: Pyo
name: T.
name: Stanke
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the goals and preliminary results of an unbiased, near-infrared, narrow-band imaging survey of the First Galactic Quadrant (10deg
description: 14pages, 8figures, 2tables, accepted for publication by MNRAS, a version with higher resolution figures can be found at http://astro.kent.ac.uk/~df/
Creation of subjectivity in spaces of crisis : a case study in Daneshjoo Park, Tehran, Iran
Creators: name: Kermanian, Sara
Publisher: name: University of British Columbia
Year: 2014

description: Public spaces are known to be spaces of social interaction, communication, or public actions. However, many of the public spaces involved in the current unrests in the Middle East, were spaces of crisis before they turned into spaces of revolution or civil war. In this research, I examine the role of public spaces in their condition of crisis on the creation of the subjectivity of their constituents and the limits and possibilities of these spaces for the formation of critical moments of thinking. I explore the answers of my questions through the ethnographic study of one example of spaces of crisis: Daneshjoo Park in Tehran. The data I use mainly comes from my personal observations and dialogues with constituents of the park during the seven years of my using the park from 2005 to 2012. Other sources of information include people's memories or comments about the park published on their weblogs or Facebook, maps, urban policies, the penal code of the Islamic Republic and public media. The result of this research shows that political power’s way for using spaces of crisis to manipulate people’s subjectivity passes through the hierarchy of identities. It also shows that the diversity of spatial experiences that forms in the condition of crisis can lead to the formation of “involuntary moments of thinking” and break the boundaries of subjectification.
Perlomyia smithae Nelson & Hanson 1973
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia smithae

description: P. smithae Nelson & Hanson, 1973 China, Russia
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 103, DOI: 10.5281/zenodo.4760796
description: {"references": ["Nelson, C. H. & J. F. Hanson. 1973. The genus Perlomyia (Plecoptera: Leuctridae). Journal of the Kansas Entomological Society, 46: 187 - 199."]}
Black-hole states in external galaxies
Creators: name: Belloni, Tomaso M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A large number of Ultra-Luminous X-ray Sources in external galaxies is now known, but the discussion about their nature is still unsettled: intermediate-mass black holes or stellar-mass black holes accreting above the Eddington limit? A promising path that can provide an answer is through comparison with "normal" stellar-mass black holes. These display separate states, identified from both their energy spectra and their fast variability. Although the nature of these states and their transitions is not clear, such a comparison can be extremely useful. In this paper, I briefly outline our current phenomenological knowledge of these states and present a (partial) overview of the different approaches followed to make these comparisons.
description: 6 pages, 8 figures, accepted for publication in Astronomische Nachrichten, to appear in the proceedings of the conference "Ultra-Luminous X-ray sources and Middle Weight Black Holes" (Madrid, May 24-26, 2010)
Magnetothermoelectric transport in modulated and unmodulated graphene
Creators: name: Nasir, R.
name: Sabeeh, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We draw motivation from recent experimental studies and present a comprehensive study of magnetothermoelectric transport in a graphene monolayer within the linear response regime. We employ the modified Kubo formalism developed for thermal transport in a magnetic field. Thermopower as well as thermal conductivity as a function of the gate voltage of a graphene monolayer in the presence of a magnetic field perpendicular to the graphene plane is determined for low magnetic fields (~1 Tesla) as well as high fields (~8 Tesla). We include the effects of screened charged impurities on thermal transport. We find good, qualitative as well as quantitative, agreement with recent experimental work on the subject. In addition, in order to analyze the effects of modulation, which can be induced by various means, on the thermal transport in graphene, we evaluate the thermal transport coefficients for a graphene monolayer subjected to a periodic electric modulation in a magnetic field. The results are presented as a function of the magnetic field and the gate voltage.
description: 14 pages, 8 figures
Perlomyia utahensis Needham & Claassen 1925
Creators: name: Sivec, Ignac
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Perlomyia
Perlomyia utahensis

description: P. utahensis Needham & Claassen, 1925 Western North America
description: Published as part of Sivec, Ignac & Stark, Bill P., 2012, Seven New Species Of Perlomyia (Plecoptera: Leuctridae) From Japan, pp. 94-103 in Illiesia 8 (7) on page 103, DOI: 10.5281/zenodo.4760796
description: {"references": ["Needham, J. G. & P. W. Claassen. 1925. A monograph of the Plecoptera or stoneflies of America north of Mexico. Thomas Say Foundation, Entomological Society of America. Volume II. Lafayette, Indiana. 397 pp."]}
Comparison of the experimental data for the Casimir pressure with the Lifshitz theory at zero temperature
Creators: name: Geyer, B.
name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We perform detailed comparison of the experimental data of the experiment on the determination of the Casimir pressure between two parallel Au plates with the theoretical values computed using the Lifshitz formula at zero temperature. Computations are done using the optical data for the complex index of refraction of Au extrapolated to low frequencies by means of the Drude model with both most often used and other suggested Drude parameters. It is shown that the experimental data exclude the Lifshitz formula at zero temperature at a 70% confidence level if the Drude model with most often used values of the parameters is employed. If other values of the Drude parameters are used, the Lifshitz formula at zero frequency is experimentally excluded at a 95% confidence level. The Lifshitz formula at zero temperature combined with the generalized plasma-like model with most often used value of the plasma frequency is shown to be experimentally consistent. We propose a decisive experiment which will shed additional light on the role of relaxation properties of conduction electrons in the Casimir effect.
description: 22 pages, 6 figures; Phys. Rev. B, to appear
An ordinary differential equation for velocity distribution and dip-phenomenon in open channel flows
Creators: name: Absi, Rafik
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: An ordinary differential equation for velocity distribution in open channel flows is presented based on an analysis of the Reynolds-Averaged Navier-Stokes equations and a log-wake modified eddy viscosity distribution. This proposed equation allows to predict the velocity-dip-phenomenon, i.e. the maximum velocity below the free surface. Two different degrees of approximations are presented, a semi-analytical solution of the proposed ordinary differential equation, i.e. the full dip-modified-log-wake law and a simple dip-modified-log-wake law. Velocity profiles of the two laws and the numerical solution of the ordinary differential equation are compared with experimental data. This study shows that the dip correction is not efficient for a small Coles' parameter, accurate predictions require larger values. The simple dip-modified-log-wake law shows reasonable agreement and seems to be an interesting tool of intermediate accuracy. The full dip-modified-log-wake law, with a parameter for dip-correction obtained from an estimation of dip positions, provides accurate velocity profiles.
On Double Vector Bundles
Creators: name: Chen, Zhuo
name: Liu, Zhangju
name: Sheng, Yunhe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper, we construct a category of short exact sequences of vector bundles and prove that it is equivalent to the category of double vector bundles. Moreover, operations on double vector bundles can be transferred to operations on the corresponding short exact sequences. In particular, we study the duality theory of double vector bundles in term of the corresponding short exact sequences. Examples including the jet bundle and the Atiyah algebroid are discussed.
description: 19 Pages
Transformative legal pathways for biodiversity conservation and sustainability: toward multi-species justice
Creators: name: Banwell, Stacy
name: Nelson, Valerie
name: Hermans, Thirze
name: Muhumuza, Joshua Raymond
name: Martin, Adrienne
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Biodiversity loss
subject: Biodiversity conservation
subject: Biodiversity protection
subject: Biodiversity
subject: Ecocide
subject: Restorative justice

description: Policy brief
The extended gaussian ensemble and metastabilities in the Blume-Capel model
Creators: name: Frigori, Rafael B.
name: Rizzi, Leandro G.
name: Alves, Nelson A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Blume-Capel model with infinite-range interactions presents analytical solutions in both canonical and microcanonical ensembles and therefore, its phase diagram is known in both ensembles. This model exhibits nonequivalent solutions and the microcanonical thermodynamical features present peculiar behaviors like nonconcave entropy, negative specific heat, and a jump in the thermodynamical temperature. Examples of nonequivalent ensembles are in general related to systems with long-range interactions that undergo canonical first-order phase transitions. Recently, the extended gaussian ensemble (EGE) solution was obtained for this model. The gaussian ensemble and its extended version can be considered as a regularization of the microcanonical ensemble. They are known to play the role of an interpolating ensemble between the microcanonical and the canonical ones. Here, we explicitly show how the microcanonical energy equilibrium states related to the metastable and unstable canonical solutions for the Blume-Capel model are recovered from EGE, which presents a concave "extended" entropy as a function of energy.
description: 6 pages, 5 eps figures. Presented at the XI Latin American Workshop on Nonlinear Phenomena, October 05-09 (2009), B\'uzios (RJ), Brazil. To appear in JPCS
Effect of alkylaluminum cocatalyst on ethylene/1-hexene copolymerization and active center distribution of MgCl2-supported Ziegler-Natta catalyst
Creators: name: Akram, Muhammad Adnan
name: Liu, Xiaoyu
name: Jiang, Baiyu
name: Zhang, Biao
name: Ali, Amjad
name: Fu, Zhisheng
name: Fan, Zhiqiang
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Science Policy
subject: Hematology
subject: Plant Biology
subject: Computational Biology

description: Ethylene-1-hexene copolymerization was catalyzed by TiCl4/diester/MgCl2 type Z-N catalyst activated by triethylaluminium (TEA), triisobutylaluminium (TIBA) or TEA/TIBA mixtures. Copolymerization activity decreased with increase of TIBA content in the cocatalyst. Each copolymer sample was fractionated into boiling n-heptane soluble and insoluble fractions. 1-Hexene content of the soluble fraction was 2 ∼ 6 times larger than that of the insoluble fraction. With introduction of TIBA in the cocatalyst, chemical composition distribution of the copolymer was broadened, attributable to increase of 1-hexene in the soluble fraction. Total number of active centers markedly decreased with increasing TIBA in cocatalyst, and active center number in the soluble fraction decreased more than that in the insoluble fraction. Rate constant of ethylene insertion (kpE) in the soluble fraction was much smaller than that of the insoluble fraction. Rate constant of 1-hexene insertion (kpH) of the soluble fraction became far larger than that of the insoluble fraction when TEA/TIBA ratio was lower than 80/20. In the presence of TIBA, only a part of active center precursors with stronger ability of incorporating 1-hexene were effectively activated in the soluble fraction. For the active centers in insoluble fraction, cocatalyst structure exerted more complicated effects on their activation. Active center models were proposed to explain the observed cocatalyst effects.
On dual empirical likelihood inference under semiparametric density ratio models in the presence of multiple samples with applications to long term monitoring of lumber quality
Creators: name: Cai, Song
Publisher: name: University of British Columbia
Year: 2014

description: Maintaining a high quality of lumber products is of great social and economic importance. This thesis develops theories as part of a research program aimed at developing a long term program for monitoring change in the strength of lumber. These theories are motivated by two important tasks of the monitoring program, testing for change in strength populations of lumber produced over the years and making statistical inference on strength populations based on Type I censored lumber samples. Statistical methods for these inference tasks should ideally be efficient and nonparametric. These desiderata lead us to adopt a semiparametric density ratio model to pool the information across multiple samples and use the nonparametric empirical likelihood as the tool for statistical inference. We develop a dual empirical likelihood ratio test for composite hypotheses about the parameter of the density ratio model based on independent samples from different populations. This test encompasses testing differences in population distributions as a special case. We find the proposed test statistic to have a classical chi-square null limiting distribution. We also derive the power function of the test under a class of local alternatives. It reveals that the local power is often increased when strength is borrowed from additional samples even when their underlying distributions are unrelated to the hypothesis of interest. Simulation studies show that this test has better power properties than all potential competitors adopted to the multiple sample problem under the investigation, and is robust to model misspecification. The proposed test is then applied to assess strength properties of lumber with intuitively reasonable implications for the forest industry. We also establish a powerful inference framework for performing empirical likelihood inference under the density ratio model when Type I censored samples are present. This inference framework centers on the maximization of a concave dual partial empirical likelihood function, and features an easy computation. We study the properties of this dual partial empirical likelihood, and find its corresponding likelihood ratio test to have a simple chi-square limiting distribution under the null model and a non-central chi-square limiting distribution under local alternatives.
Coupling the solar dynamo and the corona: wind properties, mass and momentum losses during an activity cycle
Creators: name: Pinto, Rui F.
name: Brun, Allan Sacha
name: Jouve, Laurène
name: Grappin, Roland
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the connections between the sun's convection zone and the evolution of the solar wind and corona. We let the magnetic fields generated by a 2.5D axisymmetric kinematic dynamo code (STELEM) evolve in a 2.5D axisymmetric coronal isothermal MHD code (DIP). The computations cover an 11 year activity cycle. The solar wind's asymptotic velocity varies in latitude and in time in good agreement with the available observations. The magnetic polarity reversal happens at different paces at different coronal heights. Overall sun's mass loss rate, momentum flux and magnetic braking torque vary considerably throughout the cycle. This cyclic modulation is determined by the latitudinal distribution of the sources of open flux and solar wind and the geometry of the Alfvén surface. Wind sources and braking torque application zones also vary accordingly.
Molecular Beam Epitaxy of LiMnAs
Creators: name: Novak, V.
name: Cukr, M.
name: Soban, Z.
name: Jungwirth, T.
name: Marti, X.
name: Holy, V.
name: Horodyska, P.
name: Nemec, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the molecular beam epitaxy (MBE) growth of high crystalline quality LiMnAs. The introduction of a group-I alkali metal element Li with flux comparable to fluxes of Mn and As has not caused any apparent damage to the MBE system after as many as fifteen growth cycles performed on the system to date.
description: 8 pages, 5 figures
NGC 2419: a large and extreme second generation in a currently undisturbed cluster
Creators: name: Di Criscienzo, M.
name: D'Antona, F.
name: Milone, A. P.
name: Ventura, P.
name: Caloi, V.
name: Carini, R.
name: D'Ercole
name: Vesperini, E.
name: Piotto, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyse complementary HST and SUBARU data for the globular cluster NGC 2419. We make a detailed analysis of the horizontal branch (HB), that appears composed by two main groups of stars: the luminous blue HB stars ---that extend by evolution into the RR Lyrae and red HB region--- and a fainter, extremely blue population. We examine the possible models for this latter group and conclude that a plausible explanation is that they correspond to a significant (~30 %) extreme second generation with a strong helium enhancement (Y~0.4). We also show that the color dispersion of the red giant branch is consistent with this hypothesis, while the main sequence data are compatible with it, although the large observational error blurs the possible underlying splitting. While it is common to find an even larger (50 -- 80) percentage of second generation in a globular cluster, the presence of a substantial and extreme fraction of these stars in NGC 2419 might be surprising, as the cluster is at present well inside the radius beyond which the galactic tidal field would be dominant. If a similar situation had been present in the first stages of the cluster life, the cluster would have retained its initial mass, and the percentage of second generation stars should have been quite small (up to ~10 %). Such a large fraction of extreme second generation stars implies that the system must have been initially much more massive and in different dynamical conditions than today. We discuss this issue in the light of existing models of the formation of multiple populations in globular clusters.
description: 14 pages, 14 figures (5 in low resolution format), 3 tables, accepted for publication in MNRAS
Rotationally-modulated g-modes in the rapidly-rotating delta Scuti star Rasalhague (alpha Ophiuchi)
Creators: name: Monnier, J. D.
name: Townsend, R. H. D.
name: Che, X.
name: Zhao, M.
name: Kallinger, T.
name: Matthews, J.
name: Moffat, A. F. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Despite a century of remarkable progress in understanding stellar interiors, we know surprisingly little about the inner workings of stars spinning near their critical limit. New interferometric imaging of these so-called ``rapid rotators'' combined with breakthroughs in asteroseismology promise to lift this veil and probe the strongly latitude-dependent photospheric characteristics and even reveal the internal angular momentum distribution of these luminous objects. Here, we report the first high precision photometry on the low-amplitude delta cuti variable star Rasalhague (alpha Oph, A5IV, 2.18 Msun, omega/omega_c~0.88) based on 30 continuous days of monitoring using the MOST satellite. We have identified 57+/-1 distinct pulsation modes above a stochastic granulation spectrum with a cutoff of ~26 cycles per day. Remarkably, we have also discovered that the fast rotation period of 14.5~hours modulates low-frequency modes (1-10 day periods) that we identify as a rich family of g-modes (|m| up to 7). The spacing of the g-modes is surprisingly linear considering Coriolis forces are expected to strongly distort the mode spectrum, suggesting we are seeing prograde ``equatorial Kelvin'' waves (modes l=m). We emphasize the unique aspects of Rasalhague motivating future detailed asteroseismic modeling -- a source with a precisely measured parallax distance, photospheric oblateness, latitude temperature structure, and whose low-mass companion provides an astrometric orbit for precise mass determinations.
description: Accepted for publication in Astrophysical Journal
Scattering AMplitudes from Unitarity-based Reduction Algorithm at the Integrand-level
Creators: name: Mastrolia, P.
name: Ossola, G.
name: Reiter, T.
name: Tramontano, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: SAMURAI is a tool for the automated numerical evaluation of one-loop corrections to any scattering amplitudes within the dimensional-regularization scheme. It is based on the decomposition of the integrand according to the OPP-approach, extended to accommodate an implementation of the generalized d-dimensional unitarity-cuts technique, and uses a polynomial interpolation exploiting the Discrete Fourier Transform. SAMURAI can process integrands written either as numerator of Feynman diagrams or as product of tree-level amplitudes. We discuss some applications, among which the 6- and 8-photon scattering in QED, and the 6-quark scattering in QCD. SAMURAI has been implemented as a Fortran90 library, publicly available, and it could be a useful module for the systematic evaluation of the virtual corrections oriented towards automating next-to-leading order calculations relevant for the LHC phenomenology.
description: 35 pages, 7 figures