cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Momentum dependent mean-fields of (anti)hyperons
Creators: name: Gaitanos, T.
name: Chorozidou, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the in-medium properties of hyperons and anti-hyperons in the framework of the Non-Linear Derivative (NLD) model. We focus on the momentum dependence of in-medium strangeness optical potentials. The NLD model is based on the simplicity of the well-established Relativistic Mean-Field (RMF) approximation, but it incorporates an explicit momentum dependence on a field-theoretical level. The extension of the NLD model to the (anti)baryon-octet is formulated in the spirit of SU(6) and G-parity arguments. It is shown that with an appropriate choice of momentum cut-offs the $Λ$, $Σ$ and $Ξ$ optical potentials are consistent with recent studies of the chiral effective field theory and Lattice-QCD calculations over a wide momentum region. In addition, we present NLD predictions for the in-medium momentum dependence of $\overlineΛ$-, $\overlineΣ$- and $\overlineΞ$-hyperons. This work is important for future experimental studies such as CBM, PANDA at the Facility for Antiproton and Ion Research (FAIR). It is relevant for nuclear astrophysics too.
description: 18 pages, 8 figures, accepted for publication in Nuclear Physics A
Higgs mechanism in a light front formulation
Creators: name: Martinovic, Lubomir
name: Grange, Pierre
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a simple derivation of the Higgs mechanism in an abelian light front field theory. It is based on a finite volume quantization with antiperiodic scalar fields and a periodic gauge field. An infinite set of degenerate vacua in the form of coherent states of the scalar field that minimize the light front energy, is constructed. The corresponding effective Hamiltonian descibes a massive vector field whose third component is generated by the would-be Goldstone boson. This mechanism, understood here quantum mechanically in the form analogous to the space-like quantization, is derived without gauge fixing as well as in the unitary and the light cone gauge.
description: 9 pages
Statefinder Diagnostic for Born-Infeld Type Dark Energy Model
Creators: name: Huang, Z. G.
name: Lu, H. Q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a new method--statefinder diagnostic which can differ one dark energy model from the others, we investigate in this letter the dynamics of Born-Infeld(B-I) type dark energy model. The evolutive trajectory of B-I type dark energy with Mexican hat potential model with respect to $e-folding$ time $N$ is shown in the $r(s)$ diagram. When the parameter of noncanonical kinetic energy term $η\to0$ or kinetic energy $\dotϕ^2\to0$, B-I type dark energy(K-essence) model reduces to Quintessence model or $Λ$CDM model corresponding to the statefinder pair $\{r, s\}$=$\{1, 0\}$ respectively. As a result, the the evolutive trajectory of our model in the $r(s)$ diagram in Mexican hat potential is quite different from those of other dark energy models.
description: 3 pages, 4 figures
OB Stars in the Solar Neighborhood I: Analysis of their Spatial Distribution
Creators: name: Elias, F.
name: Cabrera-Cano, J.
name: Alfaro, E. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a newly-developed, three-dimensional spatial classification method, designed to analyze the spatial distribution of early type stars within the 1 kpc sphere around the Sun. We propose a distribution model formed by two intersecting disks -the Gould Belt (GB) and the Local Galactic Disk (LGD)- defined by their fundamental geometric parameters. Then, using a sample of about 550 stars of spectral types earlier than B6 and luminosity classes between III and V, with precise photometric distances of less than 1 kpc, we estimate for some spectral groups the parameters of our model, as well as single membership probabilities of GB and LGD stars, thus drawing a picture of the spatial distribution of young stars in the vicinity of the Sun.
description: 28 pages including 9 Postscript figures, one of them in color. Accepted for publication in The Astronomical Journal, 30 January 2006
[Heinrich Wirz]
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1794
Subjects: Wirz, Johann Heinrich1756-1834

description: Porträt des Pfarrers Johann Heinrich Wirz (1756-1834)]
description: Porträt des Pfarrers Johann Heinrich Wirz (1756-1834)
description: Handschriftlicher Text zu Wirz' Physiognomie von Johann Caspar Lavater auf Tafel zum seitlichen Herausziehen: "Heinrich Wirz / Stillhorchende Liebe der Wahrheit, welche von Gott kommt, / Ernst, bescheidene Prüfung nach Einem geprüften Mass-Stab; / Treüe feste Ergreifung des reifgeprüften - Gehorsam / gegen jedes Gesetz des Rechts, der Pflicht  und der Ordnung; / Unterwerfung unter das Joch - des Stumpfen Gehörens; / Demuthvolle Ergebung an den der druch Mächte zum Licht führt /  unaufhörliches Streben nach Licht und Kraft aus der Höhe; / unermüdliche Mühe, der Brüder Lasten zuleichtern; unbestechlicher Sinn für alles was weislich geliebt wird; / unbesieglicher Muth, wo Lieb' und Tugend ihn fördern; / Offenheit, ohne Leichtsinn, Verschlossenheit vor dem Belaurer; / Lust an des Freündes Lust, und Mitleid, was er auch leide; / unversöhnlicher Hass des Hasses, 'der Härte der Zanksucht - / alles dies, und vielmehr vereint sich im lebenden Urbild. // 28.V.1794, am auffahrtvorabend. / L."
description: Geschenk der Evangelisch-Reformierten Kirchgemeinde Kilchberg
description: Aus dem Physiognomischen Kabinett von Johann Caspar Lavater Exemplar der Zentralbibliothek Zürich, Graphische Sammlung und Fotoarchiv
Who's frying the bacon when both are bringing it home?: Carework and marital satisfaction in dual earner couples.
Creators: name: Searing Hines, Christy Marie
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: Carework
Childcare
Families
Gender
Housework
Marital Satisfaction

description: In today's society women are often seen in the workforce alongside men. The roles of childcare and housework that women traditionally held now require couples to reconsider how they will be handled. This study uses data from the 500 Family Study to evaluate how couples divide carework and how it affects their marital relationship. A marital satisfaction index and carework index were used to test the gendered division of carework on marital satisfaction. The t-tests showed that women complete 32 hours and men 22 hours per week of carework. Multiple ordinary least squares regression tests show that time spent on carework decreases marital satisfaction. However, the effect is the same for both parents on their report of marital satisfaction. Women still hold the primary responsibility for caring for the home and children even when employed.
Polycategories via pseudo-distributive laws
Creators: name: Garner, Richard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18D05, 03G30 (Primary); 18D50, 03B60 (Secondary)

description: In this paper, we give a novel abstract description of Szabo's polycategories. We use the theory of double clubs -- a generalisation of Kelly's theory of clubs to `pseudo' (or `weak') double categories -- to construct a pseudo-distributive law of the free symmetric strict monoidal category pseudocomonad on Mod over itself qua pseudomonad, and show that monads in the `two-sided Kleisli bicategory' of this pseudo-distributive law are precisely symmetric polycategories.
description: 51 pages with XYpic diagrams; v2: journal version, improvements to Sections 2.2 and 3.2, other minor infelicities corrected; v3: missing appendix reinstated
REACTIONS TO THE SURGEON GENERAL'S CALL TO ACTION TO PROMOTE SEXUAL HEALTH: A SEXUAL HEALTH DISCUSSION
Creators: name: Adkins, Charles William
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: Sexology
Sexual Health
Sexual Rights
Surgeon General

description: The Surgeon General's Call to Action to Promote Sexual Health and Responsible Sexual Behavior (SGCTA) was released in July, 2001. The SGCTA highlighted serious sexual health challenges facing Americans, emphasizing high rates of unintended pregnancy, abortion, sexually transmitted infections (STIs), sexual abuse, and sexual assault. The SGCTA contains many recommendations and guidelines to promote sexual health. The current study examined ways that university students agree and/or disagree with the SGCTA. In a content analysis of 87 student responses collected in 2001 and 95 student responses collected in 2011 to an open ended question, seven agreement and three disagreement themes emerged. A majority, 82% of 2001 students' statements and 81% of 2011 students' statements were agreements to the SGCTA. Findings are discussed with respect to a sexual rights approach to sexual health.
Online Health Information Seeking Behaviors Among College Undergraduates
Creators: name: Zuckerman, Marni
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: college students
online health information

description: This study examines the online health information-seeking (OHI-seeking) behaviors of college undergraduates at the University of Maryland Baltimore County. Specifically the types of online health information (OHI) they are searching for, and how they assess and utilize the information obtained on the Internet. A cross-sectional design was used to collect data. Self-administered questionnaires were distributed to classrooms on campus. The final sample size was 327 students. Findings show that a majority of students (78%) seek health information on the Internet. No demographic characteristics are significantly associated to OHI-seeking except for country of origin, country raised in, and number of doctor visits.  In addition, students who compare findings from one health website to another and check the source of the health website are more likely to speak with their health care providers.
KLM quantum computation as a measurement based computation
Creators: name: Popescu, Sandu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the Knill Laflamme Milburn method of quantum computation with linear optics gates can be interpreted as a one-way, measurement based quantum computation of the type introduced by Briegel and Rausendorf. We also show that the permanent state of n n-dimensional systems is a universal state for quantum computation.
description: 4 pages 3 figures
Relationship between markets and technology in large Western Canadian sawmills
Creators: name: Lee, Lily
Publisher: name: University of British Columbia
Year: 2009

description: The relationship between marketing and technology has been discussed in many articles, but little empirical research has been conducted to examine this subject, especially in wood product industry. Results of this study indicate that markets served by Western Canadian sawmills are closely linked with the technologies used in their production. Forty-eight sawmills with annual production over 50 million board feet on BC coast, in BC interior and Alberta were surveyed by personal interview. Forty-three questions related to marketing, products, quality control activities, and processing technology were presented to each participating mill. Data analysis shows that in 1995 there were two distinct markets served by Western Canadian sawmills: North America (predominantly the US) and overseas (predominantly Japan). Interior BC and Alberta sawmills focused more on the North American market, while coastal BC mills focused more on overseas markets. The two groups of mills with different market orientations also show differences in raw material supply, product, quality control factors, size control software, the age of machines, and optimized work centers. This study shows the current situation for the Western Canadian sawmilling industry, and highlights opportunities for using appropriate technology, marketing strategies, and quality control techniques to improve product quality and maximize value and volume of production from limited timber resources. Key Words: market orientation, optimization, quality control activity, sawmilling industry, Sawmill technology, size control, Western Canadian sawmills,
X-ray Spectroscopy of the Contact Binary VW Cephei
Creators: name: Huenemoerder, David P.
name: Testa, Paola
name: Buzasi, Derek L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Short-period binaries represent extreme cases in the generation of stellar coronae via a rotational dynamo. Such stars are important for probing the origin and nature of coronae in the regimes of rapid rotation and activity saturation. VW Cep (P=0.28 d) is a relatively bright, partially eclipsing, and very active object. Light curves made from Chandra/HETGS data show flaring and rotational modulation, but no eclipses. Velocity modulation of emission lines indicates that one component dominates the X-ray emission. The emission measure is highly structured, having three peaks. Helium-like triplet lines give electron densities of about 3.0E+10 - 18.0E+10 /cm^3. We conclude that the corona is predominantly on the polar regions of the primary star and compact.
description: Accepted for publication in the Astropysical Journal, 23 June 2006; 22 pages, 15 figures
Effect of Rapamycin on Aspergillus nidulans Cell Wall Material Properties
Creators: name: Sripathineni, Usha
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: Atomic force Microscope
Bioprocesses
Cell wall
Filamentous Fungi
Fragmentation
Mechanical Properties

description: Filamentous fungi play vital roles in human health, agriculture and bioprocessing. In all of these situations fungi are often exposed to nutrient limitation, which can impact their behavior. Autophagy is a eukaryotic cellular process, induced under nutrient deficient conditions, which recycles internal components for cell survival.  Autophagy can also be gratuitously induced in rich growth medium, using the drug rapamycin. To address our hypotheses, we have studied fungi and cell wall material properties of the model fungus, Aspergillus nidulans, under autophagic conditions. For example, it has been observed that during fungal fermentation nutrient limitation leads to a greater degree of hyphal fragmentation.  We hypothesize that under nutrient deprived conditions autophagy is involved in recycling cell wall components, thereby weakening the wall and resulting in this increased degree of fragmentation.  In all experiments, fungi were subjected to two media conditions - with and without rapamycin. To understand changes in the cell wall material properties we studied changes in cell wall tensile strength using a fragmentation assay, changes in cell wall thickness using transmission electron microscopy, and changes in cell wall elastic properties using atomic force microscopy (AFM). The fragmentation assay showed that cells grown in presence of rapamycin for 16 hours were stronger than the cells grown in the absence of rapamycin. More data is required to determine whether the observed changes in cell wall strength are due to changes in cell wall thickness. Typical techniques used to study the changes in cell wall material properties are tedious, time intensive and only measure the population average. As an alternative, we propose the use of Atomic Force Microscope (AFM) to observe changes at the single mycelium level. Previously, our lab developed a method to study fungi grown in suspension culture, using AFM and we used this method to study cells grown on cover slips enabling us to study individual mycelia.
Mid-board miniature dual channel optical transmitter MTx and transceiver MTRx
Creators: name: Zhao, Xiandong
name: Liu, Chonghan
name: Gong, Datao
name: Chen, Jinghong
name: Guo, Di
name: He, Huiqin
name: Hou, Suen
name: Huang, Guangming
name: Li, Xiaoting
name: Liu, Tiankun
name: Sun, Xiangming
name: Teng, Ping-Kun
name: Xiao, Le
name: Xiang, Annie C.
name: Ye, Jingbo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report the development of a mid-board, TOSA and ROSA based miniature dual channel optical transmitter (MTx) and a transceiver (MTRx). The design transmission data rate is 5.12 Gbps per channel and receiving data rate 4.8 Gbps. MTx and MTRx are only 6 mm tall and are electrically and optically pluggable. Although the fiber TOSA/ROSA coupling is through a custom latch, the fiber uses the standard LC ferrule, flange and spring. Light coupling is ensured by the TOSA and ROSA with the LC coupling mechanism. With the dual channel serializer LOCx2 sits under MTx, one achieves high data transmission with a small PCB footprint, and enjoys the reliability of the hermetically packaged TOSA. MTx and MTRx are designed for detector front-end readout of the ATLAS Liquid Argon Calorimeter (LAr) trigger upgrade.
Cohomology for a group of diffeomorphisms of a manifold preserving an exact form
Creators: name: Losik, Mark
name: Michor, Peter W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58D05, 20J06, 22E65

description: Let $M$ be a $G$-manifold and $\om$ a $G$-invariant exact $m$-form on $M$. We indicate when these data allow us to constract a cocycle on a group $G$ with values in the trivial $G$-module $\mathbb R$ and when this cocycle is nontrivial.
description: 14 pages, LaTeX
Jamaica, Trinidad and Tobago, Leeward Islands, Windward Islands, Barbados, and British Guiana: Projected Levels of Demand, Supply, and Imports of Agricultural Products to 1975
Creators: name: Social, Institute Of
name: Social, Institute Of
Publisher: name: Unknown
Year: 1965
Subjects: Agricultural and Food Policy
Crop Production/Industries
Demand and Price Analysis
International Relations/Trade
Land Economics/Use
Livestock Production/Industries
Research Methods/ Statistical Methods

description: Excerpt from the report Foreword: The major objective of the study was to obtain a rational projection of the import demand of the West Indies Federation by 1965 and 1975 for specified and other agricultural products. The contract also specified four subsidiary objectives: (1) Develop long-range projections for the economy, including forecasts of gross national income, etc; (2) estimate aggregate demand for the specified products in 1965 and 1975; (3) determine the magnitude of domestic supplies of these products by 1965 and 1975; and (4) ascertain the extent of import demand for these products by 1965 and 1975 on the basis of long-term supply-and-demand relationships. Analysis was required for the following products: Wheat and wheat flour; corn; rice; other grains, such as oats and barley; sugar and its products; vegetables, including "Irish" potatoes; deciduous fruits, such as apples and pears; citrus fruit; bananas; meat, including poultry; eggs; dairy products; fats and oils; coffee; cocoa; tobacco; and cotton. In addition, other commodities were to be covered if the need was revealed as the study developed.
description: This report is the result of a contract study between the Foreign Agricultural 5ervice, United States Department of Agriculture, and the Institute of Social and Economic Research, University College of the West Indies, Jamaica. The contract was administered by the Western Hemisphere Branch, Regional Analysis Division, Economic Research Service of the Department. The views expressed and the accuracy of analysis in this report are those of the Institute, and do not necessarily reflect concurrence by the United States Department of Agriculture. The published report is essentially in the form that it was submitted, editing having been done by the Department under an understanding with the Institute that only substantive changes would be submitted for their review. In editing, British spelling and style have been retained.
Possible substellar companions in dwarf eclipsing binaries: SDSS J143547.87+373338.5, NSVS 7826147, and NSVS 14256825
Creators: name: Wolf, M.
name: Kučáková, H.
name: Zasche, P.
name: Hornoch, K.
name: Kára, J.
name: Merc, J.
name: Zejda, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the new results of our long-term observational project to detect the small variations in the orbital periods of low-mass and short-period eclipsing binaries. About 120 new precise mid-eclipse times were obtained for three relatively well-known dwarf eclipsing binaries: SDSS J143547.87+373338.5 (P = 0.126 d), NSVS 07826147 (0.162 d), and NSVS 14256825 (0.110 d). Observed-minus-calculated (O-C) diagrams of these systems were analyzed using all accurate timings, and, where possible, new parameters of the light-time effect were calculated. For the first time, we derive (or improve upon previous findings with regard to) the short orbital periods of 13 and 10 years of possible third bodies for SDSS J143547.87+373338.5 and NSVS 07826147, respectively. In these binaries, our data show that period variations can be modeled simply on the basis of a single circumbinary object. For the first two objects, we calculated the minimum mass of the third components to be 17 MJ, and 1.4 MJ respectively, which corresponds to the mass of a brown dwarf or a giant planet. For NSVS 14256825, the cyclical period changes caused by a single additional body cannot be confirmed by our recent eclipse time measurements. More complex behavior connected with two orbiting bodies, or yet unknown effects, should be taken into account.
description: 7 pages, 4 figures, Accepted in Astronomy&Astrophysics
Gauge Invariance and Fractional Statistics
Creators: name: Lima, A. R. P.
name: Landim, R. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a new $(2+1)$-dimensional field theory showing exotic statistics and fractional spin. This theory is achieved through a redefinition of the gauge field $A_μ$. New properties are found. Another way to implement the field redefinition is used with the same results obtained.
description: 5 pages
Probing variable outflow in HD 161796 via multi-epoch spectroscopy
Creators: name: Puķītis, Kārlis
name: Začs, Laimons
name: Grankina, Aija
Publisher: name: Zenodo
Year: 2021

description: The post-AGB star HD 161796 (IRAS 17436+5003) is a bright oxygen rich F type supergiant with a highly aspherical circumstellar shell. Long term radial velocity monitoring has revealed no signs of binarity for this star. Multiple spectra acquired in the last 18 years are analysed. Significant temporal variations in the profiles of strong absorption lines and splitting, which is a suggestive of shock wave presence in the atmosphere of the star, is observed. The specific shape and variability of H-alpha line indicates variable incipient mass loss. Changes are detected also in medium strength lines - blue wings of the profiles are extended and variable; however, red wings seem to be stationary. This suggests variable outward motion of matter near the surface of the star. Additionally, rate at which the star is evolving towards PNe stage is determined to be 5 K per year. It is concluded that time-resolved spectroscopy of HD 161796 could prove useful in study of mass loss mechanism on post AGB and shaping of PNe.
Letter from Frank Hewer to [James] Goldie, July 6, 1910
Creators: name: Hewer, Frank Algernon
Publisher: name: The University of British Columbia
Year: 2017

description: Letter from Frank Hewer to James Goldie, dated July 6, 1910, regarding an issue between Goldie and Hewer about payments in escrow from Goldie to Hewer.
Ensembling Low Precision Models for Binary Biomedical Image Segmentation
Creators: name: Ma, Tianyu
name: Zhang, Hang
name: Ong, Hanley
name: Vora, Amar
name: Nguyen, Thanh D.
name: Gupta, Ajay
name: Wang, Yi
name: Sabuncu, Mert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Segmentation of anatomical regions of interest such as vessels or small lesions in medical images is still a difficult problem that is often tackled with manual input by an expert. One of the major challenges for this task is that the appearance of foreground (positive) regions can be similar to background (negative) regions. As a result, many automatic segmentation algorithms tend to exhibit asymmetric errors, typically producing more false positives than false negatives. In this paper, we aim to leverage this asymmetry and train a diverse ensemble of models with very high recall, while sacrificing their precision. Our core idea is straightforward: A diverse ensemble of low precision and high recall models are likely to make different false positive errors (classifying background as foreground in different parts of the image), but the true positives will tend to be consistent. Thus, in aggregate the false positive errors will cancel out, yielding high performance for the ensemble. Our strategy is general and can be applied with any segmentation model. In three different applications (carotid artery segmentation in a neck CT angiography, myocardium segmentation in a cardiovascular MRI and multiple sclerosis lesion segmentation in a brain MRI), we show how the proposed approach can significantly boost the performance of a baseline segmentation method.
description: 10 pages, 4 figures
Physics of Strongly Magnetized Neutron Stars
Creators: name: Harding, Alice K.
name: Lai, Dong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There has recently been growing evidence for the existence of neutron stars possessing magnetic fields with strengths that exceed the quantum critical field strength of $4.4 \times 10^{13}$ G, at which the cyclotron energy equals the electron rest mass. Such evidence has been provided by new discoveries of radio pulsars having very high spin-down rates and by observations of bursting gamma-ray sources termed magnetars. This article will discuss the exotic physics of this high-field regime, where a new array of processes becomes possible and even dominant, and where familiar processes acquire unusual properties. We review the physical processes that are important in neutron star interiors and magnetospheres, including the behavior of free particles, atoms, molecules, plasma and condensed matter in strong magnetic fields, photon propagation in magnetized plasmas, free-particle radiative processes, the physics of neutron star interiors, and field evolution and decay mechanisms. Application of such processes in astrophysical source models, including rotation-powered pulsars, soft gamma-ray repeaters, anomalous X-ray pulsars and accreting X-ray pulsars will also be discussed. Throughout this review, we will highlight the observational signatures of high magnetic field processes, as well as the theoretical issues that remain to be understood.
description: Minor changes in references. 93 pages. Reports on Progress in Physics, in press (2006)
title: X-ray crystallographic analysis of ADORable zeolites and metal-organic frameworks
Creators: name: Henkelis, Susan Elizabeth
Publisher: name: University of St Andrews
Year: 2019

description: This thesis largely focuses on the mechanistic analysis of the Assembly-Disassembly- Organisation-Reassembly (ADOR) process through a range of crystallographic techniques including powder X-ray diffraction and Pair Distribution Function (PDF) analysis and subsequent analysis using solid-state kinetics. Chapter 4 describes the development of a new standard protocol to using the ADOR process. The protocol describes the development of a procedure used for identifying the optimum conditions (time of reaction, temperature, acidity, etc.) for the ADOR process. In developing the protocol, Ge-containing UTL zeolites were subjected to hydrolysis conditions using both water and hydrochloric acid as media, which provides an understanding of the effects of temperature and pH on the Disassembly (D) and Organisation (O) steps of the process that define the potential products. Samples were analysed by powder X-ray diffraction to yield a time course for the reaction at each set of conditions. Chapter 5 continues work on the ADOR process and presents the first kinetic study on the two most prominent steps in the process; Disassembly and Organisation. By using solid- state kinetic models, Avrami-Erofeev and its linear equivalent Sharp-Hancock, the dependence on temperature and presence of liquid water was investigated and the activation energy of the rearrangement process quantified. Work on the rearrangement step aimed to understand where the silica species intercalates from and which material formed as the kinetic and thermodynamic product from the reaction. Chapter 6 describes a study into the Disassembly and Organisation steps of the ADOR process through in situ Pair Distribution Function (PDF) analysis. This hopes to shed light on the selectivity of the ADOR process in different media and the mechanism by which the double-four-ring (d4r) breakdown. On a different note, Chapter 7 describes the refinement of synthesis conditions used to prepare poly-crystalline CPO-27-M (MOF-74) with lower concentrations of base and at low temperature. Refinement of the synthesis of single crystal CPO-27-Mg, -Zn and UTSA-74 was undertaken and the necessary components to forming large single crystals understood.
CMB Anisotropies at Second-Order II: Analytical Approach
Creators: name: Bartolo, Nicola
name: Matarrese, Sabino
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We provide an analytical approach to the second-order Cosmic Microwave Background (CMB) anisotropies generated by the non-linear dynamics taking place at last scattering. We study the acoustic oscillations of the photon-baryon fluid in the tight coupling limit and we extend at second-order the Meszaros effect. We allow for a generic set of initial conditions due to primordial non-Gaussianity and we compute all the additional contributions arising at recombination. Our results are useful to provide the full second-order radiation transfer function at all scales necessary for establishing the level of non-Gaussianity in the CMB.
description: 38 pages, LaTeX file; typos corrected, discussion improved in Sec. IIIA and VII, matching the version published in JCAP
The braided Ptolemy-Thompson group $T^*$ is asynchronously combable
Creators: name: Funar, Louis
name: Kapoudjian, Christophe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 57 N 05, 20 F 38

description: The braided Ptolemy-Thompson group $T^*$ is an extension of the Thompson group $T$ by the full braid group $B_{\infty}$ on infinitely many strands. This group is a simplified version of the acyclic extension considered by Greenberg and Sergiescu, and can be viewed as a mapping class group of a certain infinite planar surface. In a previous paper we showed that $T^*$ is finitely presented. Our main result here is that $T^*$ (and $T$) is asynchronously combable. The method of proof is inspired by Lee Mosher's proof of automaticity of mapping class groups.
description: 45p
Cluster duality
Creators: name: Afonin, S. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is well known that the linear mass spectrum of light mesons in the large-N_c limit is dual to the perturbative QCD continuum. We find the form of the linear spectrum which is maximally dual to the perturbation theory. The obtained ansatz turns out to be the spectrum of the Lovelace-Shapiro dual amplitude. This spectrum is chirally symmetric in the sense that it corresponds to zero values for the order parameters of chiral symmetry breaking in QCD. We further assume that the actual spectrum is dual to the maximally dual one within the QCD sum rules based on OPE and in this way recover some known important relations and statements. The experimental spectrum seems to support the assumed duality: The masses of resonances cluster near certain equidistant values of energy squared and the positions of clustering follow the maximally dual ansatz. The latter fact signals the chiral symmetry restoration in the excited states. We discuss also two topics of recent interest: nonlinear corrections to the string-like spectrum and the dimension-two gluon condensate.
description: 25 pages, 1 figure, version to be published in Nucl. Phys. B
The Clock and Control System for the ATLAS Liquid Argon Calorimeter Phase-I Upgrade
Creators: name: Xiao, Le
name: Liu, Chonghan
name: Liu, Tiankuan
name: Chen, Hucheng
name: Chen, Jinghong
name: Chen, Kai
name: Feng, Yulang
name: Gong, Datao
name: Guo, Di
name: He, Huiqin
name: Hou, Suen
name: Huang, Guangming
name: Sun, Xiangming
name: Tang, Yuxuan
name: Teng, Ping-Kun
name: Xiang, Annie C.
name: Xu, Hao
name: Ye, Jingbo
name: You, Yang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A Liquid-argon Trigger Digitizer Board (LTDB) is being developed to upgrade the ATLAS Liquid Argon Calorimeter Phase-I trigger electronics. The LTDB located at the front end needs to obtain the clock signals and be configured and monitored remotely from the back end. A clock and control system is being developed for the LTDB and the major functions of the system have been evaluated. The design and evaluation of the clock and control system are presented in this paper.
3-D hydrodynamic simulations of convection in A stars
Creators: name: Kochukhov, O.
name: Freytag, B.
name: Piskunov, N.
name: Steffen, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Broadening and asymmetry of spectral lines in slowly rotating late A-type stars provide evidence for high-amplitude convective motions. The properties of turbulence observed in the A-star atmospheres are not understood theoretically and contradict results of previous numerical simulations of convection. Here we describe an ongoing effort to understand the puzzling convection signatures of A stars with the help of 3-D hydrodynamic simulations. Our approach combines realistic spectrum synthesis and non-grey hydrodynamic models computed with the CO5BOLD code. We discuss these theoretical predictions and confront them with high-resolution spectra of A stars. Our models have, for the first time, succeeded in reproducing the observed profiles of weak spectral lines without introducing fudge broadening parameters.
description: 3 pages, 2 figures; to appear in the proceedings of the IAU Symposium 239, Convection in Astrophysics
Super Science-Fiction (Extended)
Creators: name: Ndoni, Albi
Publisher: name: Zenodo
Year: 2024
Subjects: Science fiction
Futurism

description: A subgenre of Science-Fiction, delves into speculative scenarios and technological advancements that surpass the imagination and predictive capacity of traditional science fiction. It goes far beyond conventional futuristic concepts, often stretching into incredibly distant timelines, reaching tens of thousands, millions, or even billions of years into the future.
On the cohomology of Brill-Noether loci over Quot schemes
Creators: name: Ramirez, Cristina Martinez
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F05, 14C40

description: Let C be a smooth projective curve over the field of the complex numbers. We consider Brill-Noether loci over the moduli of maps from C to the Grassmannian G(m,n) and the corresponding Quot schemes of quotients of a trivial vector bundle on C compactifying the spaces of morphisms. We study in detail the case in which m=2, n=4. We prove results on the irreducibility and dimension of these Brill-Noether loci and we address explicit formulas for their cohomology classes. We study the existence problem of these spaces which is closely related with the problem of classification of vector bundles over curves.
A Study of F0 Modification for X-Vector Based Speech Pseudonymization Across Gender
Creators: name: Champion, Pierre
name: Jouvet, Denis
name: Larcher, Anthony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Cryptography and Security (cs.CR)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Speech pseudonymization aims at altering a speech signal to map the identifiable personal characteristics of a given speaker to another identity. In other words, it aims to hide the source speaker identity while preserving the intelligibility of the spoken content. This study takes place in the VoicePrivacy 2020 challenge framework, where the baseline system performs pseudonymization by modifying x-vector information to match a target speaker while keeping the fundamental frequency (F0) unchanged. We propose to alter other paralin-guistic features, here F0, and analyze the impact of this modification across gender. We found that the proposed F0 modification always improves pseudonymization We observed that both source and target speaker genders affect the performance gain when modifying the F0.
Is the X-ray spectrum of the narrow emission line QSO PG1211+143 defined by its energetic outflow?
Creators: name: Pounds, K. A.
name: Reeves, J. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An XMM-Newton observation of the bright QSO PG1211+143 in 2001 revealed a blue-shifted absorption line spectrum indicative of a high velocity radial outflow of highly ionised gas. Unless highly collimated, the outflow mass rate was shown to be comparable to the accretion rate, with mechanical energy a significant fraction of the bolometric luminosity. Analysis of the full XMM-Newton data set now allows the wider effects of that energetic outflow to be explored. We find that absorption and re-emission of the primary continuum flux in the ionised outflow, together with a second, less strongly absorbed, continuum component can explain the strong `soft excess' in PG1211+143 without the extreme velocity `smearing' in conflict with observed absorption line widths. Previously unpublished data from a second XMM-Newton observation of PG1211+143 is shown to be consistent with the new spectral model, finding that the additional continuum component dominates the spectral variability. We speculate that this variable continuum component is powered by the high velocity outflow.
description: 10 pages, 13 figures, accepted for publication in MNRAS
Higher Curvature Effects in ADD and RS Models
Creators: name: Rizzo, Thomas G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Over the last few years several extra-dimensional models have been introduced in attempt to deal with the hierarchy problem. These models can lead to rather unique and spectacular signatures at Terascale colliders such as the LHC and ILC. The ADD and RS models, though quite distinct, have many common feature including a constant curvature bulk, localized Standard Model(SM) fields and the assumption of the validity of the EH action as a description of gravitational interactions.
description: 8 pages, 3 figs; Talk given at LCWS06, Bangalore, India, 16-18 March, 2006; typos corrected
LOCx2, a Low-latency, Low-overhead, 2 x 5.12-Gbps Transmitter ASIC for the ATLAS Liquid Argon Calorimeter Trigger Upgrade
Creators: name: Xiao, Le
name: Li, Xiaoting
name: Gong, Datao
name: Chen, Jinghong
name: Guo, Di
name: He, Huiqin
name: Hou, Suen
name: Huang, Guangming
name: Liu, Chonghan
name: Liu, Tiankuan
name: Sun, Xiangming
name: Teng, Ping-Kun
name: Vosooghi, Bozorgmehr
name: Xiang, Annie C.
name: Ye, Jingbo
name: You, Yang
name: Zuo, Zhiheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In this paper, we present the design and test results of LOCx2, a transmitter ASIC for the ATLAS Liquid Argon Calorimeter trigger upgrade. LOCx2 consists of two channels and each channel encodes ADC data with an overhead of 14.3% and transmits serial data at 5.12 Gbps with a latency of less than 27.2 ns. LOCx2 is fabricated with a commercial 0.25-um Silicon-on-Sapphire CMOS technology and is packaged in a 100-pin QFN package. The power consumption of LOCx2 is about 843 mW.
Elicitation session: Long noun phrases, wh-questions, time expressions, subordinates
Creators: name: Loum, Malick
name: Merrill, John
name: Baier, Nico
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: srr

description: 1 WAV file. Time expressions include "early" and "late," and have to do with lengths of time.
Detection of CH$_3$C$_3$N in Titan's Atmosphere
Creators: name: Thelen, A. E.
name: Cordiner, M. A.
name: Nixon, C. A.
name: Vuitton, V.
name: Kisiel, Z.
name: Charnley, S. B.
name: Palmer, M. Y.
name: Teanby, N. A.
name: Irwin, P. G. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Titan harbors a dense, organic-rich atmosphere primarily composed of N$_2$ and CH$_4$, with lesser amounts of hydrocarbons and nitrogen-bearing species. As a result of high sensitivity observations by the Atacama Large Millimeter/submillimeter Array (ALMA) in Band 6 ($\sim$230-272 GHz), we obtained the first spectroscopic detection of CH$_3$C$_3$N (methylcyanoacetylene or cyanopropyne) in Titan's atmosphere through the observation of seven transitions in the $J = 64\rightarrow63$ and $J = 62\rightarrow61$ rotational bands. The presence of CH$_3$C$_3$N on Titan was suggested by the Cassini Ion and Neutral Mass Spectrometer detection of its protonated form: C$_4$H$_3$NH$^+$, but the atmospheric abundance of the associated (deprotonated) neutral product is not well constrained due to the lack of appropriate laboratory reaction data. Here, we derive the column density of CH$_3$C$_3$N to be (3.8-5.7)$\times10^{12}$ cm$^{-2}$ based on radiative transfer models sensitive to altitudes above 400 km Titan's middle atmosphere. When compared with laboratory and photochemical model results, the detection of methylcyanoacetylene provides important constraints for the determination of the associated production pathways (such as those involving CN, CCN, and hydrocarbons), and reaction rate coefficients. These results also further demonstrate the importance of ALMA and (sub)millimeter spectroscopy for future investigations of Titan's organic inventory and atmospheric chemistry, as CH$_3$C$_3$N marks the heaviest polar molecule detected spectroscopically in Titan's atmosphere to date.
description: 17 pages, 6 figures, 2 tables. Accepted in ApJ Letters
Solitons and affine projectively flat surfaces
Creators: name: Jelonek, Wlodzimierz
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A15

description: The aim of this paper is to give a local description of affine surfaces, whose induced Blaschke structure is projectively flat. We show that such affine surfaces with constant Gauss affine curvature and indefinite induced Blaschke metric are described by soliton equations.
EFFECT OF MECHANICAL VESTIBULAR STIMULATION ON HAND FUNCTION IN CHILDREN WITH HEMIPARETIC CEREBRAL PALSY
Creators: name: Ahmed Mohamed Abdel Haleem
Publisher: name: Zenodo
Year: 2024
Subjects: Mechanical Vestibular Stimulation. Cerebral palsy. Fine Motor Skills. Hand Grip strength. Hemiparesis

description: Objective: To investigate the effects of mechanical vestibular stimulation on fine motor skills and hand grip strength in children with hemiparetic cerebral palsy.

Methods: Sixty hemiparetic cerebral palsied children of both sexes, ranging in age from 4 to 6 years participated in this study. They are randomly assigned into two groups: control group (A) and study group (B). Children in group A received the designed physical therapy program. Children in group B received the same physical therapy program given to group A for 45 min then mechanical vestibular exercise for 15 mins. Fine motor skills, including visual motor integration, grasp and fine motor quotient evaluated using Peabody Developmental Motor Scale (PDMS-2) while hand grip strength measured using Jamar Handheld Dynamometer before and after three months of treatment.

Results: This study showed a statistically significant improvement in the two groups when comparing their pre and post treatment mean values of all measured variables. When comparing the post-treatment results, there were significant differences between groups A and B in favor of group B regarding all measured variables.

Conclusion: Mechanical vestibular stimulation is better added to the rehabilitation program to improve fine motor skills and hand grip strength in children with hemiparetic cerebral palsy
A Sarcina bacterium linked to lethal disease in sanctuary chimpanzees in Sierra Leone
Creators: name: Owens, Leah A.
name: Colitti, Barbara
name: Hirji, Ismail
name: Pizarro, Andrea
name: Jaffe, Jenny E.
name: Moittié, Sophie
name: Bishop-Lilly, Kimberly A.
name: Estrella, Luis A.
name: Voegtly, Logan J.
name: Kuhn, Jens H.
name: Suen, Garret
name: Deblois, Courtney L.
name: Dunn, Christopher D.
name: Juan-Sallés, Carles
name: Goldberg, Tony L.
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: Clinical microbiology
subject: Infectious-disease epidemiology
subject: Pathogens
subject: Infection
subject: 610 Medizin und Gesundheit

description: Human and animal infections with bacteria of the genus Sarcina (family Clostridiaceae) are associated with gastric dilation and emphysematous gastritis. However, the potential roles of sarcinae as commensals or pathogens remain unclear. Here, we investigate a lethal disease of unknown etiology that affects sanctuary chimpanzees (Pan troglodytes verus) in Sierra Leone. The disease, which we have named “epizootic neurologic and gastroenteric syndrome” (ENGS), is characterized by neurologic and gastrointestinal signs and results in death of the animals, even after medical treatment. Using a case-control study design, we show that ENGS is strongly associated with Sarcina infection. The microorganism is distinct from Sarcina ventriculi and other known members of its genus, based on bacterial morphology and growth characteristics. Whole-genome sequencing confirms this distinction and reveals the presence of genetic features that may account for the unusual virulence of the bacterium. Therefore, we propose that this organism be considered the representative of a new species, named “Candidatus Sarcina troglodytae”. Our results suggest that a heretofore unrecognized complex of related sarcinae likely exists, some of which may be highly virulent. However, the potential role of “Ca. S. troglodytae” in the etiology of ENGS, alone or in combination with other factors, remains a topic for future research.