cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Is the pole content of each single-energy, single-channel partial wave analysis inherently model dependent?
Creators: name: Svarc, Alfred
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Unfortunately, yes, it is. In ref.[1] it has been shown that without fixing the reaction-amplitude phase, many combinations of partial waves at neighboring energies in single-energy, single-channel partial wave analysis reproduce experimental data identically, but are discontinuous and disconnected. To obtain the continuous solution, the phase has to be fixed to some continuous value. In the same reference it has also been shown that the change of angular part of reaction-amplitude phase mixes partial waves, so the pole structure of any single-energy single-channel partial wave analysis depends on the chosen phase. As in any single-channel analysis the overall reaction-amplitude phase cannot be determined because of continuum ambiguity, it is in principle free and has to be taken from some coupled-channel model. Because of the difference in the angular part of the phase, choosing different phases results in the change of the pole content of the obtained solution. Therefore, single-energy single-channel partial wave analysis is inherently model dependent, and the number of poles it contains strongly depends on the choice of the phase. In that reference these facts have been illustrated on the pseudo-scalar meson production toy model. This truth is now for the measured observables demonstrated on the realistic model of ref. [2] which combines amplitude and partial wave analysis in one self-consistent scheme for the the world collection of η-photoproduction data, and fixes the phase to BG2014-2 solution [3]. We show that the pole structure of the solution whose phase is very close to the BG2014-2 theoretical ED phase is very similar to the pole structure of BG2014-2 solution, but the agreement with the data is not ideal. However, improving the agreement with the data requires the departure from BG2014-2 ED phase, and this spoils analytic structure of the obtained solution.
description: 15 pages, 7 figures
Chandra and H.E.S.S. observations of the Supernova Remnant CTB 37B
Creators: name: HESS Collaboration
name: Aharonian, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The >100 GeV gamma-ray source, HESS J1713-381, apparently associated with the shell-type supernova remnant (SNR) CTB 37B, was discovered using H.E.S.S. in 2006. X-ray follow-up observations with Chandra were performed in 2007 with the aim of identifying a synchrotron counterpart to the TeV source and/or thermal emission from the SNR shell. These new Chandra data, together with additional TeV data, allow us to investigate the nature of this object in much greater detail than was previously possible. The new X-ray data reveal thermal emission from a ~4' region in close proximity to the radio shell of CTB 37B. The temperature of this emission implies an age for the remnant of ~5000 years and an ambient gas density of ~0.5 cm-3. Both these estimates are considerably uncertain due to the asymmetry of the SNR and possible modifications of the kinematics due to efficient cosmic ray (CR) acceleration. A bright (~7x10-13erg cm-2s-1) and unresolved (<1'') source (CXOU J171405.7-381031) with a soft (Γ~3.3) non-thermal spectrum is also detected in coincidence with the radio shell. Absorption indicates a column density consistent with the thermal emission from the shell suggesting a genuine association rather than a chance alignment. The observed TeV morphology is consistent with an origin in the complete shell of CTB 37B. The lack of diffuse non-thermal X-ray emission suggests an origin of the gamma-ray emission via the decay of neutral pions produced in interactions of protons and nuclei, rather than inverse Compton (IC) emission from relativistic electrons.
description: Revised version accepted for publication in Astronomy and Astrophysics (8 pages, 6 figures)
Determination of bulk and surface properties of liquid Bi-Sn alloys using an improved quasi-lattice theory
Creators: name: Oshakuade, Olugbenga Morayo
name: Awe, Oluseyi Ezekiel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermodynamic properties of Bi-Sn were studied at 600 and 900K using a quasi-lattice theory. After successful fitting of Gibbs free energies of mixing and thermodynamic activities, the fitting parameters were used to investigate the enthalpy of mixing, the entropy of mixing, concentration fluctuations, Warren-Cowley short range order parameter, surface concentrations and surface tensions of the binary systems. Positive and symmetrically shaped enthalpies of mixing were observed in all composition range, while negative excess entropies of mixing were observed. Bi-Sn showed a slight preference for like-atoms as nearest neighbours in all composition range. The nature of atomic order in Bi-Sn at 600 and 900K appeared similar. The highest tendency for homocoordination exists at composition where mole fraction of Bi is about 40%. It was also observed that Bi (whose surface tension is lower than that of Sn) has the highest surface enrichment in the Bi-Sn systems. Unlike many previous applications of the quasi-lattice theory where constant values were used to approximate coordination numbers, temperature and composition-dependent coordination numbers were applied in this work.
description: arXiv admin note: substantial text overlap with arXiv:2102.08516
Circular polarization in comets: Observations of Comet C/1999 S4 (LINEAR) and tentative interpretation
Creators: name: Rosenbush, Vera
name: Kolokolova, Ludmilla
name: Lazarian, Alexander
name: Shakhovskoyd, Nikolai
name: Kiselev, Nikolai
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Comet C/1999 S4 (LINEAR) was exceptional in many respects. Its nucleus underwent multiple fragmentations culminating in the complete disruption around July 20, 2000. We present circular polarization measurements along the cuts through the coma and nucleus of the comet during three separate observing runs, in June 28 - July 2, July 8 - 9, and July 21 - 22, 2000. The circular polarization was detected at a rather high level, up to 0.8%. The left-handed as well as right-handed polarization was observed over the coma with the left circularly polarized light systematically observed in the sunward part of the coma. During our observations the phase angle of the comet varied from 61 up to 122 deg., which allowed us to reveal variations of circular polarization with the phase angle. Correlation between the degree of circular polarization, visual magnitude, water production rate, and linear polarization of Comet C/1999 S4 (LINEAR) during its final fragmentation in July 2000 was found. The mechanisms that may produce circular polarization in comets and specifically in Comet C/1999 S4 (LINEAR) are discussed and some tentative interpretation is presented.
Adolescents’ Experiences of Existential Loneliness Regarding Receiving and Providing Support
Creators: name: Garnow, Tide
name: Einberg, Eva-Lena
name: Edberg, Anna-Karin
name: Garmy, Pernilla
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Among adolescents, loneliness is common. One kind of loneliness, existential loneliness, is understood as a painful part of the human condition. During adolescence, existential loneliness has been shown to be challenging to navigate independently. Therefore, this study aimed to explore Swedish adolescents’ experiences of existential loneliness regarding receiving and providing support. This study had an exploratory qualitative design based on focus group discussions (n = 9) comprising 30 Swedish adolescents (median age 18). The data was analysed inductively using thematic analysis. The adolescents’ experiences of existential loneliness regarding receiving and providing support were represented in four themes: Wanting to face existential loneliness alone, but seeking relief and support when needed; Wanting to share the experiences, but not knowing how or being afraid to bare the vulnerability; Wanting to share the experiences, but nobody is there; Supporting friends by trying to be there, but feeling insecure. In conclusion, knowledge of existential loneliness and a sensitivity to adolescents’ personal needs is crucial. Supporting and being there for adolescents may increase their ability to encounter ̶ their own or others’ ̶ experiences of existential loneliness, which could be promotive for their well-being and personal growth.
Music Matters – A Qualitative Evaluation of a Nurse-Led, Group-Based Music Program Complementary to Early Intervention for First-Episode Psychosis
Creators: name: Abild, Signe Marie
name: Schuster, Sofie
name: Midtgaard, Julie
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: First-episode psychosis is a significant mental health condition that can have a profound and lasting effect on an individual’s functional abilities and overall quality of life. While music therapy has shown promise in improving these areas, there is a lack of research exploring the impact of music groups led by mental health professionals without formal music therapy training in the context of early intervention in psychosis. This study aimed to conduct a qualitative evaluation of a once-weekly, 12-week, nurse-led music group, offered as an adjunct to early intervention in young people with first-episode psychosis. The specific objectives were to explore social interaction and experiences of participants and instructors in relation to the music group and provide focus points for implementation in clinical practice. The study utilized Interpretive Description, collecting data through participant observation (6 sessions × 1.5 hrs; 9 hrs in total), key informant interviews (n = 1), and group (n = 4) and email-based (n = 2) interviews. The data was transcribed, thematized, and analyzed using NVivo12 and Interpretive Description inductive analysis resulting in three main themes: Practicalities of the music group, Restored identity, and Music as medicine reflecting the potential of the music group to contribute to a sense of non-patient identity, decreasing symptoms related to mental illness, foster social relationships and a feeling of belonging to a musical community. This study highligts how participation in music groups can be a possible promoter of recovery. However, sustainability appears contingent on the skills and resources of the facilitator (i.e., nurse). Suggestions for a program theory and clinical implications are presented and discussed.
Investigation of the Stark Effect on a Centrosymmetric Quantum Emitter in Diamond
Creators: name: De Santis, Lorenzo
name: Trusheim, Matthew
name: Chen, Kevin
name: Englund, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum emitters in diamond are leading optically-accessible solid-state qubits. Among these, Group IV-vacancy defect centers have attracted great interest as coherent and stable optical interfaces to long-lived spin states. Theory indicates that their inversion symmetry provides first-order insensitivity to stray electric fields, a common limitation for optical coherence in any host material. Here we experimentally quantify this electric field dependence via an external electric field applied to individual tin-vacancy (SnV) centers in diamond. These measurements reveal that the permanent electric dipole moment and polarizability are at least four orders of magnitude smaller than for the diamond nitrogen vacancy (NV) centers, representing the first direct measurement of the inversion symmetry protection of a Group IV defect in diamond. Moreover, we show that by modulating the electric-field-induced dipole we can use the SnV as a nanoscale probe of local electric field noise, and we employ this technique to highlight the effect of spectral diffusion on the SnV.
description: 6 pages, 4 figures
The Star Formation History in a SMC field: IAC-star/IAC-pop at work
Creators: name: Noel, Noelia E. D.
name: Aparicio, Antonio
name: Gallart, Carme
name: Hidalgo, Sebastian L.
name: Costa, Edgardo
name: Mendez, Rene A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a progress report of a project to study the quantitative star formation history (SFH) in different parts of the Small Magellanic Cloud (SMC). We use the information in [(B-R), R] color-magnitude diagrams (CMDs), which reach down to the oldest main-sequence turnoffs and allow us to retrieve the SFH in detail. We show the first results of the SFH in a SMC field located in the Southern direction (at $\thicksim$1 kpc from the SMC center). This field is particularly interesting because in spite of being located in a place in which the HI column density is very low, it still presents a recent enhancement of star formation.
description: Poster presented at: Stellar Populations as Building Blocks of Galaxies, Proceedings IAU Symposium No. 241, 2007
$D_{sJ}(2860)$ and $D_{sJ}(2715)$
Creators: name: Zhang, Bo
name: Liu, Xiang
name: Deng, Wei-Zhen
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Recently Babar Collaboration reported a new $c\bar{s}$ state $D_{sJ}(2860)$ and Belle Collaboration observed $D_{sJ}(2715)$. We investigate the strong decays of the excited $c\bar{s}$ states using the $^{3}P_{0}$ model. After comparing the theoretical decay widths and decay patterns with the available experimental data, we tend to conclude: (1) $D_{sJ}(2715)$ is probably the $1^{-}(1^{3}D_{1})$ $c\bar{s}$ state although the $1^{-}(2^{3}S_{1})$ assignment is not completely excluded; (2) $D_{sJ}(2860)$ seems unlikely to be the $1^{-}(2^{3}S_{1})$ and $1^{-}(1^{3}D_{1})$ candidate; (3) $D_{sJ}(2860)$ as either a $0^{+}(2^{3}P_{0})$ or $3^{-}(1^{3}D_{3})$ $c\bar{s}$ state is consistent with the experimental data; (4) experimental search of $D_{sJ}(2860)$ in the channels $D_sη$, $DK^{*}$, $D^{*}K$ and $D_{s}^{*}η$ will be crucial to distinguish the above two possibilities.
description: 18 pages, 7 figures, 2 tables. Some discussions added. The final version to appear at EPJC
Quantum Invariants, Modular Forms, and Lattice Points II
Creators: name: Hikami, Kazuhiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We study the SU(2) Witten--Reshetikhin--Turaev invariant for the Seifert fibered homology spheres with M-exceptional fibers. We show that the WRT invariant can be written in terms of (differential of) the Eichler integrals of modular forms with weight 1/2 and 3/2. By use of nearly modular property of the Eichler integrals we shall obtain asymptotic expansions of the WRT invariant in the large-N limit. We further reveal that the number of the gauge equivalent classes of flat connections, which dominate the asymptotics of the WRT invariant in N ->\infinity, is related to the number of integral lattice points inside the M-dimensional tetrahedron.
Vertical Strain-Induced Modification of the Electrical and Spin Properties of Monolayer MoSi2X4 (X= N, P, As and Sb)
Creators: name: Touski, Shoeib Babaee
name: Ghobadi, Nayereh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, the electrical and spin properties of monolayer MoSi2X4 (X= N, P, As, and Sb) under vertical strain are investigated. The band structures state that MoSi2N4 is an indirect semiconductor, whereas other compounds are direct semiconductors. The vertical strain has been selected to modify the electrical properties. The bandgap shows a maximum and decreases for both tensile and compressive strains. The valence band at K-point displays a large spin-splitting, whereas the conduction band has a negligible splitting. On the other hand, the second conduction band has a large spin-splitting and moves down under vertical strain which leads to a large spin-splitting in both conduction and valence bands edges. The projected density of states along with the projected band structure clarifies the origin of these large spin-splittings. These three spin-splittings can be controlled by vertical strain.
Sub-milliarcsecond Imaging of SgrA* and M87
Creators: name: Krichbaum, T. P.
name: Graham, D. A.
name: Bremer, M.
name: Alef, W.
name: Witzel, A.
name: Zensus, J. A.
name: Eckart, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present and discuss new result from mm-VLBI observations of M87 and SgrA*, using the Global mm-VLBI array (GMVA). New 3mm-VLBI images of the inner jet of M87 are presented, showing details with a spatial resolution down to 15 Schwarzschild radii. This resolution corresponds to a similar spatial resolution (in terms of R_s) obtained for Sgr A*. We discuss existing and new size determinations for this source provided by mm-VLBI at wavelengths of 3, 2, and 1.4 mm. With respect to the morphological difference between Sgr A* and M87 (the latter exhibits a long jet), a comparison of the sub-milliarcsecond structures seen with mm-VLBI may lead to a better understanding of the astro-physical processes acting in the vicinity of super-massive black holes.
description: Contribution to the proceedings of the Galactic Center Workshop 2006 "From the Center of the Milky Way to Nearby Low-Luminosity Galactic Nuclei", held in Bad Honnef, Germany on April 18 - 22, 2006. Editors: R. Schoedel (University of Cologne), et al.. To be published in the Journal of Physics: Conference Series by Institute of Physics Publishing. Paper contains 7 pages and 6 figures
Decoherence-free quantum-information processing using dipole-coupled qubits
Creators: name: Brooke, Peter G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a quantum-information processor that consists of decoherence-free logical qubits encoded into arrays of dipole-coupled qubits. High-fidelity single-qubit operations are performed deterministically within a decoherence-free subsystem without leakage via global addressing of bichromatic laser fields. Two-qubit operations are realized locally with four physical qubits, and between separated logical qubits using linear optics. We show how to prepare cluster states using this method. We include all non-nearest-neighbor effects in our calculations, and we assume the qubits are not located in the Dicke limit. Although our proposal is general to any system of dipole-coupled qubits, throughout the paper we use nitrogen-vacancy (NV) centers in diamond as an experimental context for our theoretical results.
description: 7 pages, 5 figures
Density of Eigenvalues of Random Normal Matrices with an Arbitrary Potential, and of Generalized Normal Matrices
Creators: name: Etingof, Pavel
name: Ma, Xiaoguang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Following the works by Wiegmann-Zabrodin, Elbau-Felder, Hedenmalm-Makarov, and others, we consider the normal matrix model with an arbitrary potential function, and explain how the problem of finding the support domain for the asymptotic eigenvalue density of such matrices (when the size of the matrices goes to infinity) is related to the problem of Hele-Shaw flows on curved surfaces, considered by Entov and the first author in 1990-s. In the case when the potential function is the sum of a rotationally invariant function and the real part of a polynomial of the complex coordinate, we use this relation and the conformal mapping method developed by Entov and the first author to find the shape of the support domain explicitly (up to finitely many undetermined parameters, which are to be found from a finite system of equations). In the case when the rotationally invariant function is $β|z|^2$, this is done by Wiegmann-Zabrodin and Elbau-Felder. We apply our results to the generalized normal matrix model, which deals with random block matrices that give rise to *-representations of the deformed preprojective algebra of the affine quiver of type $\hat A_{m-1}$. We show that this model is equivalent to the usual normal matrix model in the large $N$ limit. Thus the conformal mapping method can be applied to find explicitly the support domain for the generalized normal matrix model.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
title: The invisible city: The mundane biogeographies of urban microbial ecologies
Creators: name: Bradshaw, Aaron
Publisher: name: Humboldt-Universität zu Berlin
Year: 2024
Subjects: subject: infrastructure
subject: microbe studies
subject: microbes
subject: more‐than‐human
subject: multispecies
subject: other‐than‐human
subject: urban
subject: urban ecologies
subject: urban water metabolism
subject: 550 Geowissenschaften

description: The article processing charge was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – 491192747 and the Open Access Publication Fund of Humboldt-Universität zu Berlin.
description: More‐than‐human, multispecies and animal geographic accounts of the city have tended to focus on large, charismatic and wild organisms, to the detriment of spatially invisible other‐than‐humans that are central to urban reproduction. At the same time, urban microbial geographies have foregrounded embodied interactions between humans and microorganisms, whether they are symbiotic or pathogenic, often marginalising the material contributions of extracorporeal microbiomes to the urban fabric. Building from these two blindspots, this article focuses on microbial ecologies that live constitutively outside of (other‐than‐)human bodies and which are intimately caught up in the metabolic intensities and infrastructural environments of the urban realm. There are two key aims: (1) to explore different forms of urban microbial ecologies and (2) to examine their relationships with urban infrastructures and reproduction. My disciplinary lenses are animal geography, microbe studies and urban ecology and my case studies are focused on urban water metabolism. Thus, based on empirical fieldwork on the urban River Lea in East London and supplemented by scientific literature and technical documents, I analyse three urban microbial ecologies that correspond to the urban realms’ ‘extended microbiomes’: those involved in slow sand filtration for the treatment of drinkable water, those involved in sewage treatment via the activated sludge process and those emerging and evolving in disused urban canal infrastructure. These processes spatially manage microbial growth and modulate the distribution of different forms of microbial agency with important effects for the smooth functioning of urban water metabolism. I suggest these ecologies correspond to the ‘spaces' of microbes in the city, and characterise a mundane system of repetition and regulation. However, microbes continue to assert their agency within the spaces of urban water metabolism, create their own places and worlds and highlight a more‐than‐human contingency and indeterminacy at the heart of urban reproduction.
Individual Participant-Level Data for the manuscript: Avelumab maintenance in advanced urothelial carcinoma: biomarker analysis of the phase 3 JAVELIN Bladder 100 trial
Creators: name: Powles, Thomas
name: Sridhar, Srikala S.
name: Loriot, Yohann
name: Bellmunt, Joaquim
name: Jasmine Mu, Xinmeng
name: A. Ching, Keith
name: Pu, Jie
name: Sternberg, Cora N.
name: Petrylak, Daniel P.
name: Tambaro, Rosa
name: Dourthe, Louis M.
name: Álvarez-Fernández, Carlos
name: Aarts, Maureen
name: Pietro, Alessandra di
name: Grivas, Petros
name: Davis, Craig B.
Publisher: name: Pfizer
Year: 2021
Subjects: subject: Biomarkers
subject: 111203 Cancer Genetics
subject: FOS: Clinical medicine
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: 110702 Applied Immunology (incl. Antibody Engineering, Xenotransplantation and T-cell Therapies)
subject: 110704 Cellular Immunology
subject: Diseases
subject: Health Care
subject: 110706 Immunogenetics (incl. Genetic Immunology)
subject: 110707 Innate Immunity
subject: 111207 Molecular Targets
subject: 110105 Medical Biochemistry: Nucleic Acids
subject: 111505 Pharmacogenomics
subject: FOS: Medical biotechnology
subject: 111209 Solid Tumours
subject: 110709 Tumour Immunology

description: These tables contain deidentified patient-level biomarker data in the analysis set.
[Northern Pomo texts]
Creators: name: Guerrero, Edna
name: Lake, Annie
name: Vihman, Eero
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: pej
subject: Northern Pomo language

description: Northern Pomo notebook labeled "D": dialogues. From reel tape 9:2, part b (Vihman.t014).
Financial Analysis of an Agricultural Extension Initiative in a Conflict-Vulnerable Area of Mindanao
Creators: name: Menz, Kenneth M.
name: Predo, Canesio D.
name: Menz, Kenneth M.
name: Predo, Canesio D.
Publisher: name: Unknown
Year: 2019
Subjects: subject: Teaching/Communication/Extension/Profession
subject: conflict
subject: extension
subject: financial analysis
subject: M indanao

description: An economic assessment of a pilot agricultural extension initiative relating to vegetable growing in a conflict-vulnerable area of Zamboanga Sibugay, Mindanao was undertaken. There are minimal micro or macro level studies in the literature attempting to measure the economic returns to agricultural extension. Those studies have typically suffered from an attribution problem in relation to the separation of extension costs and benefits from other influencing factors. In conflict vulnerable areas such as reported here, agricultural extension is generally limited or absent. In this example, the application of the extension initiative was the only change affecting farmers’ practices, so the study is somewhat unique in being able to isolate the extension effect. The analysis indicates that the present value of benefits from the extension initiative is 1.6 million pesos while the present value of costs is 1.1 million pesos, with a net benefit of 570 thousand pesos. The benefit cost ratio is 1.54 and the internal rate of return is 34%. These various measures are all significantly positive and lend credibility to the idea that agricultural extension applied to conflict-vulnerable areas can represent an acceptable return on money invested. The research can also be seen as a component of a broader ‘action research’ agenda whereby initial research outcomes are evaluated before progressing to the next step of wider implementation/adaptation.
Nonthermal Synchrotron Radiation from Gamma Ray Burst External Shocks and the X-ray Flares Observed with Swift
Creators: name: Dermer, Charles D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An analysis of the interaction between a spherical relativistic blast-wave shell and a stationary cloud with a spherical cap geometry is performed assuming that the cloud width << x, where x is the distance of the cloud from the GRB explosion center. The interaction is divided into three phases: (1) a collision phase with both forward and reverse shocks; (2) a penetration phase when either the reverse shock has crossed the shell while the forward shock continues to cross the cloud, or vice versa; and (3) an expansion phase when, both shocks having crossed the cloud and shell, the shocked fluid expands. Temporally evolving spectral energy distributions (SEDs) are calculated for the problem of the interaction of a blast-wave shell with clouds that subtend large and small angles compared with the Doppler(-cone) angle 1/Gamma_0, where Gamma_0 is the coasting Lorentz factor. The Lorentz factor evolution of the shell/cloud collision is treated in the adiabatic limit. Behavior of the light curves and SEDs on, e.g., Gamma_0, shell-width parameter eta, and properties and locations of the cloud is examined. Short timescale variability (STV) in GRB light curves, including ~100 keV gamma-ray pulses observed with BATSE and delayed ~1 keV X-ray flares found with Swift, can be explained by emissions from an external shock formed by the GRB blast wave colliding with small density inhomogeneities in the "frozen pulse" approximation (eta -> 0, where Delta_0 + eta x/Gamma_0^2 is the blast-wave shell width), and perhaps in the thin-shell approximation (eta ~ 1/Gamma_0), but not when eta ~ 1. If this approximation is valid, then external shock processes could make the dominant prompt and afterglow emissions in GRB light curves, consistent with short delay two-step collapse models for GRBs.
description: 19 pages, 11 figures, ApJ, in press (Aug. 20, 2008); includes revisions
Some reactions of 1,2,3-trithia-[3]-ferrocenophanes
Creators: name: Talaba, Ana
Publisher: name: University of British Columbia
Year: 2010

description: The ability of l,2,3-trithia-[3]-ferrocenophane and (N,N-dimethylaminomethyl)-l,2,3-trithia-[3]-ferrocenophane to function as ligands towards transition metals of groups 7 and 8 was explored. Thermal reactions of l,2,3-trithia-[3]-ferrocenophane with ruthenium and osmium carbonyls produced 18-electron ferrocenedithiolato ruthenium and osmium carbonyl complexes isolated in low (5-10%) or moderate yields (25-35%). The ruthenium and osmium complexes, Fe(η⁵-C₅H₄S)₂Ru₂(CO)₆ and Fe(η⁵-C₅H₄S)₂(μ₃-S)(μ-CO)₂Os₄(CO)₉, were characterized by X-ray crystallographic analysis. The crystal structure of the ruthenium complex reveals a very distorted octahedral coordination about the ruthenium atoms and a Ru-Ru separation of 2.6812(7) Å which is comparable to the lengths found in other ruthenium(I) dimers. The structure of the osmium cluster compound reveals a spiked triangular configuration of osmium atoms with a sulfido ligand triply bridging the osmium triangle and the C₅H₄S ligands doubly bridging the spike Os-Os bond. Both structures have eclipsed and nearly parallel cyclopentadienyl rings. Reactions of l,2,3-trithia-[3]-ferrocenophane with cobalt and manganese carbonyls produced unidentified insoluble solids, in high yields. Two low yield soluble cobalt derivatives Fe(η⁵-C₅H₄S)₂Co₂(CO)₆ and Fe(η⁵-C₅H₄)₂Co₄(CO)₁₂, and a paramagnetic manganese derivative were also isolated from these reactions. Reactions of (N,N-dimemylammomethyl)-l,2,3-trithia-[3]-ferrocenophane with ruthenium and iron carbonyls, and some rhodium and palladium complexes afforded oils and solids which were not identified. These products are insoluble in common organic solvents and are produced in yields varying from 20 to 90 %. Microanalytical data indicate that the products are not analytically pure compounds. A soluble iron derivative isolated in trace quantity, was identified from the fragments exhibited by the low-resolution spectrum as [Fe(C₅H₄S₂)(C₅H₃CH₂NMe₂)]₂Fe₂(CO)₆.
Electromagnetically Induced Transparency in 6Li
Creators: name: Fuchs, J.
name: Duffy, G. J.
name: Rowlands, W. J.
name: Akulshin, A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report electromagnetically induced transparency for the D1 and D2 lines in $^{6}$Li in both a vapour cell and an atomic beam. Electromagnetically induced transparency is created using co-propagating mutually coherent laser beams with a frequency difference equal to the hyperfine ground state splitting of 228.2 MHz. The effects of various optical polarization configurations and applied magnetic fields are investigated. In addition, we apply an optical Ramsey spectroscopy technique which further reduces the observed resonance width.
description: 12 pages, 9 figures
Cyclic Einstein-Podolsky-Rosen Steering
Creators: name: Márton, István
name: Nagy, Sándor
name: Bene, Erika
name: Vértesi, Tamás
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Einstein-Podolsky-Rosen (EPR) steering is a form of quantum correlation that exhibits a fundamental asymmetry in the properties of quantum systems. Given two observers, Alice and Bob, it is known to exist bipartite entangled states which are one-way steerable in the sense that Alice can steer Bob's state, but Bob cannot steer Alice's state. Here we generalize this phenomenon to three parties and find a cyclic property of tripartite EPR steering. In particular, we identify a three-qubit state whose reduced bipartite states are one-way steerable for arbitrary projective measurements. Moreover, the three-qubit state has a cyclic steering property in the sense, that by arranging the system in a triangular configuration the neighboring parties can steer each others' states only in the same (e.g. clockwise) direction. That is, Alice can steer Bob's state, Bob can steer Charlie's state, and Charlie can steer Alice's state, but not the other way around.
description: 11 pages, 2 figures, 1 table
[Northern Pomo texts]
Creators: name: Lake, Annie
name: Vihman, Eero
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: pej
subject: Northern Pomo language

description: Northern Pomo notebook labeled "EG 20/AL": previously elicited texts, with interlinear glosses and free translations. Titles "Visiting Monos (cont'n) II", "On language", "On education", "Acorn hunting with Elsie", "Car accident", "Acorns", [Gathering willows and roots ...], "When the house burned", "Comments on whites", "On food gathering", "Tree people", "Race around Clear Lake".
Extended Coherence Time with Atom-Number Squeezed Sources
Creators: name: Li, Wei
name: Tuchman, Ari K.
name: Chien, Hui-Chun
name: Kasevich, Mark A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherence properties of Bose-Einstein condensates offer the potential for improved interferometric phase contrast. However, decoherence effects due to the mean-field interaction shorten the coherence time, thus limiting potential sensitivity. In this work, we demonstrate increased coherence times with number squeezed states in an optical lattice using the decay of Bloch oscillations to probe the coherence time. We extend coherence times by a factor of 2 over those expected with coherent state BEC interferometry. We observe quantitative agreement with theory both for the degree of initial number squeezing as well as for prolonged coherence times.
description: 4 pages, 4 figures
"Striped" Rectangular Rigid Box with Hermitian and non-Hermitian $\mathcal{PT}$ Symmetric Potentials
Creators: name: Kulkarni, Shailesh
name: Pathak, Rajeev K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Eigenspectra of a spinless quantum particle trapped inside a rigid, rectangular, two-dimensional (2D) box subject to diverse inner potential distributions are investigated under hermitian, as well as non-hermitian antiunitary $\mathcal{PT}$ (composite parity and time-reversal) symmetric regimes. Four sectors or "stripes" inscribed in the rigid box comprising contiguously conjoined parallel rectangular segments with one side equaling the entire width of the box are studied. The stripes encompass piecewise constant potentials whose exact, complete energy eigenspectrum is obtained employing matrix mechanics. Various striped potential compositions, viz. real valued ones in the hermitian regime as well as complex, non-hermitian but $\mathcal{PT}$ symmetric ones are considered separately and in conjunction, unraveling among typical lowest lying eigenvalues, retention and breakdown scenarios engendered by the $\mathcal{PT}$ symmetry, bearing upon the strength of non-hermitian sectors. Some states exhibit a remarkable crossover of symmetry `making' and `breaking': while a broken $\mathcal{PT}$ gets reinstated for an energy level, higher levels may couple to continue with symmetry breaking. Further, for a charged quantum particle a $\mathcal{PT}$ symmetric electric field, furnished with a striped potential backdrop, also reveals peculiar retention and breakdown $\mathcal{PT}$ scenarios. Depictions of prominent probability redistributions relating to various potential distributions both under norm-conserving unitary regime for hermitian Hamiltonians and non-conserving ones post $\mathcal{PT}$ breakdown are presented.
description: 21 pages, 10 figures, references added
Impacts of Fisheries Management and Policy Scenarios in Sarangani and Sulu-Sulawesi Seas on Philippine Tuna Industry: Simulations from the AsiaFish Model
Creators: name: Rodriguez, U-Primo E.
name: Ramirez, Paul Joseph B.
name: Esguerra, Sarah S.
name: Garces, Len R.
name: Rodriguez, U-Primo E.
name: Ramirez, Paul Joseph B.
name: Esguerra, Sarah S.
name: Garces, Len R.
Publisher: name: Unknown
Year: 2019
Subjects: subject: Livestock Production/Industries
subject: AsiaFish
subject: Philippines
subject: tuna
subject: trade

description: This paper explores the likely future impacts on the Philippine tuna industry of three possible fisheries management scenarios using a multi-market model known as AsiaFish. Simulation results showed that a scenario of restricted access to High Seas Pocket 1 adversely affects fishers and consumers as well as export revenues due to less tuna produced and higher tuna prices. In the scenario of stricter regulations in EU and US markets, tuna producers are affected negatively but these impacts are weakened by higher consumption of tuna. The combined effect from the two scenarios results in higher consumer prices, and lower imports and domestic consumption. In all three scenarios, over -all fish output is expected to fall. These results highlight the major consequences of noncompliance with imminent regional and global policies and regulations and provide useful information that can guide crafting of pre-emptive local strategies to address these foreseen challenges in the future.
The Massive Hosts of Radio Galaxies Across Cosmic Time
Creators: name: Seymour, Nick
name: Stern, Daniel
name: De Breuck, Carlos
name: Vernet, Joel
name: Rettura, Alessandro
name: Dickinson, Mark
name: Dey, Arjun
name: Eisenhardt, Peter
name: Fosbury, Robert
name: Lacy, Mark
name: McCarthy, Pat
name: Miley, George
name: Rocca-Volmerange, Brigitte
name: Rottgering, Huub
name: Stanford, S. Adam
name: Teplitz, Harry
name: van Breugel, Wil
name: Zirm, Andrew
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a comprehensive Spitzer survey of 69 radio galaxies across 160% for ~75% the high redshift radio galaxies. As expected from unified models of AGN, the stellar fraction of the rest-frame H-band luminosity has no correlation with redshift, radio luminosity, or rest-frame mid-IR (5um) luminosity. Additionally, while the stellar H-band luminosity does not vary with stellar fraction, the total H-band luminosity anti-correlates with the stellar fraction as would be expected if the underlying hosts of these radio galaxies comprise a homogeneous population. The resultant stellar luminosities imply stellar masses of 10^{11-11.5}Msun even at the highest redshifts. Powerful radio galaxies tend to lie in a similar region of mid-IR color-color space as unobscured AGN, despite the stellar contribution to their mid-IR SEDs at shorter-wavelengths. The mid-IR luminosities alone classify most HzRGs as LIRGs or ULIRGs with even higher total-IR luminosities. As expected, these exceptionally high mid-IR luminosities are consistent with an obscured, highly-accreting AGN. We find a weak correlation of stellar mass with radio luminosity.
description: 63 pages, 14 figures, accepted for publication in ApJS
Novel secondary metabolites from selected marine invertebrates
Creators: name: Miao, Shichang
Publisher: name: University of British Columbia
Year: 2011

description: Chemical studies of a Northeastern Pacific tunicate and three Papua New Guinea sponges have led to the isolation of sixteen new secondary metabolites. The structures of the new compounds were determined by spectroscopic analysis and chemical interconversions. The absolute stereochemistry of imbricatine, a previously reported starfish metabolite, has also been determined. The northeastern Pacific tunicate Ritterella rubra has been found to contain a novel series of aromatic butenolides, rubrolides A-H (149-156). The structures of the rubrolides were solved by the analysis of NMR (¹H, ¹³C, COSY, nOe, HETCOR, FLOCK, HMQC and HMBC), MS and IR data combined with chemical interconversions. FLOCK, a new ¹H/¹³C long-range correlation experiment, played a key role in establishing the rubrolide carbon skeleton. The rubrolides represent the largest family of non-nitrogenous tunicate metabolites. The protein phosphatase inhibitory activity and the potent antibiotic activities of the rubrolides warrant further investigation. The absolute stereochemistry of imbricatine (179), a compound reported from the starfish Dermasterias imbricata, has been determined by comparing the optical properties of its chemical degradation products with those of model compounds. Raney nickel reduction of 179 yielded benzyltetrahydroisoquinoline 188a which was methylated to give 188b. Comparison between the CD spectrum of 188b and those of model compounds 189 and 190 solved the absolute stereochemistry of the tetrahydroisoquinoline fragment of 179. Reductive hydrolysis of 179 followed by oxidation yielded histidine disulphide 182. Comparison of the optical rotation of 182 with the reported value solved the absolute stereochemistry of the histidine fragment of 179. Attempts to study the biogenesis of 179 were unsuccessful. Examination of three Papua New Guinea sponges resulted in the isolation of eight new compounds. Six new bastadins (211-216) were isolated from Ianthella basta. The structures were elucidated by spectroscopic analysis as well as comparison with the previously reported bastadins. A Xestospongia species was found to contain xestospongin E (238), a new metabolite, and a number of known xestospongins. Both the bastadins and the xestospongins possess antibiotic and cytotoxic activities. A symmetrical enyne, callydiyne (247), was isolated from Callyspongia flammea. The structure of 247 was determined by spectroscopic studies.
Bianisotropic route to the realization and matching of backward-wave metamaterial slabs
Creators: name: Tretyakov, Sergei A.
name: Simovski, Constantin R.
name: Hudlicka, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A concept of backward-wave bianisotropic composite medium matched to free space is suggested. It is based on the use of a uniaxial bianisotropic structure embedded into a matrix with negative effective permittivity. Since bianisotropy is easier to achieve in the optical range than artificial magnetism, this concept is prospective for optical backward-wave metamaterials. As an example of possible realizations, a microwave Omega-composite combined with a wire lattice is analytically studied.
description: 5 pages, 2 figures; references added, typos added; accepted for publication as a Brief Report in Physical Review B
Simple On-Shell Renormalization Framework for the Cabibbo-Kobayashi-Maskawa Matrix
Creators: name: Kniehl, Bernd A.
name: Sirlin, Alberto
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an explicit on-shell framework to renormalize the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix at the one-loop level. It is based on a novel procedure to separate the external-leg mixing corrections into gauge-independent self-mass (sm) and gauge-dependent wave-function renormalization contributions, and to adjust non-diagonal mass counterterm matrices to cancel all the divergent sm contributions, and also their finite parts subject to constraints imposed by the hermiticity of the mass matrices. It is also shown that the proof of gauge independence and finiteness of the remaining one-loop corrections to W -> q_i + anti-q_j reduces to that in the unmixed, single-generation case. Diagonalization of the complete mass matrices leads then to an explicit expression for the CKM counterterm matrix, which is gauge independent, preserves unitarity, and leads to renormalized amplitudes that are non-singular in the limit in which any two fermions become mass degenerate.
description: 26 pages, 2 figures, published version
Supersymmetric coloured/hairy black holes
Creators: name: Meessen, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discus all possible spherically symmetric black hole type solutions to an N=2 supergravity model with SO(3) gauging. The solutions consist of a one parameter family illustrating that the no-hair theorem does not hold and an isolated solution that a supersymmetric analogue of a coloured black hole.
description: 7 pages, 1 figure
Supplemental data for the manuscript: Avelumab maintenance in advanced urothelial carcinoma: biomarker analysis of the phase 3 JAVELIN Bladder 100 trial
Creators: name: Powles,, Thomas
name: Sridhar, Srikala S.
name: Loriot, Yohann
name: Bellmunt, Joaquim
name: Jasmine Mu, Xinmeng
name: A. Ching, Keith
name: Pu, Jie
name: Sternberg, Cora N.
name: Petrylak, Daniel P.
name: Tambaro, Rosa
name: Dourthe, Louis M.
name: Álvarez-Fernández, Carlos
name: Aarts, Maureen
name: Pietro, Alessandra di
name: Grivas, Petros
name: Davis, Craig B.
Publisher: name: Pfizer
Year: 2021
Subjects: subject: 110702 Applied Immunology (incl. Antibody Engineering, Xenotransplantation and T-cell Therapies)
subject: FOS: Clinical medicine
subject: 110704 Cellular Immunology
subject: 110706 Immunogenetics (incl. Genetic Immunology)
subject: 110707 Innate Immunity
subject: 110709 Tumour Immunology
subject: 111203 Cancer Genetics
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: 111207 Molecular Targets
subject: 111209 Solid Tumours
subject: 111505 Pharmacogenomics
subject: FOS: Medical biotechnology
subject: Biomarkers
subject: Diseases
subject: Health Care
subject: 110105 Medical Biochemistry: Nucleic Acids

description: These figures contain details of the study population, elastic net model parameters, and CytoPro method validation.These tables report results from statistical analyses of biomarker associations with overall survival in JAVELIN Bladder 100.