cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dryas integrifolia subsp. integrifolia Vahl subsp. integrifolia
Creators: name: Desjardins, Émilie
name: Lai, Sandra
name: Payette, Serge
name: Dubé, Martin
name: Sokoloff, Paul C.
name: St-Louis, Annie
name: Poulin, Marie-Pier
name: Legros, Jade
name: Sirois, Luc
name: Vézina, François
name: Tam, Andrew
name: Berteaux, Dominique
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Dryas
Dryas integrifolia
Dryas integrifolia vahl subsp. integrifolia

description: Dryas integrifolia Vahl subsp. integrifolia Figure 15A–C Materials examined. CANADA – Nunavut • Ellesmere Island, CFS Alert; 82°28′34″N, 062°26′49″W; 128 m a.s.l.; 2 Jul. 2019; habitat: barren ground, with till and rocks as substrates, and sparse dominance of Saxifraga oppositifolia; QFA0635001. Identification. Plants 3–8 cm high; dwarf shrubs. Taproots and rhizomes present. Branches prostrate, sometimes rooting at nodes. Leaves evergreen; basal and cauline; isomorphic; alternate; petiolate. Stipules green or brown; hairy. Petioles 2–5 mm long; hairy, with white hairs. Leaf blades 4–9 mm long, 1–3 mm wide; lanceolate; bases cordate or truncate; unlobed; abaxial surface tomentose, with white hairs; adaxial surface shiny dark green, glabrous or sparsely hairy on the midvein; margins entire or slightly crenate, revolute, and glabrous; apices acute. Inflorescence a solitary flower. Pedicels 15– 25 mm long; erect; hairy with woolly hyaline hairs and dark purple glandular hairs. Epicalyx absent. Sepals 7 or 8; 3–7 mm long, 1–2 mm wide; linear or lanceolate; dark green; surface hairy, with woolly hyaline hairs and dark purple glandular hairs; margins ciliate; apices acute. Petals 8; 7–11 mm long, 3–5 mm wide; obtrullate or obovate; unlobed; white or ivory. Androecium with 40–70 stamens and 0.5–0.9 mm long anthers. Gynoecium consisting of numerous separate carpels, with 5–6 mm long conical styles. Fruit an achene, with elongate plumose styles.
description: Published as part of Desjardins, Émilie, Lai, Sandra, Payette, Serge, Dubé, Martin, Sokoloff, Paul C., St-Louis, Annie, Poulin, Marie-Pier, Legros, Jade, Sirois, Luc, Vézina, François, Tam, Andrew & Berteaux, Dominique, 2021, Survey of the vascular plants of Alert (Ellesmere Island, Canada), a polar desert at the northern tip of the Americas, pp. 181-225 in Check List 17 (1) on page 214, DOI: 10.15560/17.1.181
Digital control techniques for power quality improvements in power factor correction applications
Creators: name: Clark, Colin William
Publisher: name: University of British Columbia
Year: 2012

description: The prevalence of standards and recommended practices to meet harmonic current limits has gained, and continues to gain, momentum over recent years. To meet these requirements, power electronic rectification devices are necessitated along with their specialized control techniques. A popular power electronic circuit to obtain low-harmonic input current is the boost power factor correction (PFC) converter, and with the advent of digital control, powerful control techniques to meet these harmonic current limits are possible. The first contribution is a detailed guide to the conversion of an analog IC-controlled boost PFC converter to a digitally controlled equivalent. Design of the voltage and current sensing networks, compensator, overview of the critical interrupt service routines, and the control implementation in a digital signal processor (DSP) is presented. The existing boost PFC converter modified for digital control is successful, and provides a flexible prototyping test bench for further use. The second contribution is a novel DSP-based discontinuous conduction mode (DCM) detection method for application to the boost PFC converter. The proposed detection method is computationally simple, and requires little or no modification to existing digitally controlled boost PFC converters using DSPs with on-board comparators. An experimental boost PFC converter verifies the effectiveness of the proposed detection method over traditional zero current detection and DCM detection techniques, enabling advanced control techniques for power quality improvements. The final contribution is a new adaptive mixed conduction mode (MCM) control technique for the boost PFC converter. This MCM control technique applies the proposed DSP-based DCM detection method to realize higher power factor and decreased total harmonic distortion (THD) over a commercially available analog controller and a conventional digital controller. Using a boost PFC converter operating in MCM with the proposed adaptive control method, THD improvements of up to 4.55% at light loads and power factor improvements of up to 17.4% are provided over the analog and conventional digital controller.
Reconstruction of the wavefunctions of coupled nanoscopic emitters using a coherent optical technique
Creators: name: Richter, M.
name: Schlosser, F.
name: Schoth, M.
name: Burger, S.
name: Schmidt, F.
name: Knorr, A.
name: Mukamel, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that using coherent, spatially resolved spectroscopy, complex hybrid wave functions can be disentangled into the individual wave functions of the individual emitters. This way, detailed information on the coupling of the individual emitters, not available in far-field spectroscopy can be obtained. The proposed quantum state tomography relies on the ability to selectively excite each emitter individually by spatially localized pulses. Simulations of coupled semiconductor Ga/InAs quantum dots, using light fields available in current nanoplasmonics, show that even undesired resonances can be removed from measured spectra. The method can also be applied to study the internal coupling of pigments in photosythesis and artificial light harvesting.
description: 20 pages, 5 figures
title: Prospective Associations Between Older Adults' Social Connections and Trajectories of Change in Physical Activity and Psychological Well-Being During the COVID-19 Pandemic
Creators: name: Lavallée, Niana
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: older adults
subject: physical activity
subject: well-being
subject: covid-19
subject: social connections
subject: Education--Social Sciences
subject: Education--Health
subject: Mental Health

description: Social connections show promising evidence for increasing physical activity participation and improving psychological well-being among older adults. However, there is limited longitudinal examinations of associations between different social connection constructs and changes in physical activity and psychological well-being, particularly across periods of rapid change. The purpose of this thesis was to prospectively examine associations between baseline values of social connections and trajectories of change in physical activity and psychological well-being among adults 55 years of age and older. Data was collected over a 6-month period during the COVID-19 pandemic. A single dataset was used for both studies in this thesis. The first study examined associations between seven social connection constructs and trajectories of moderate-to-vigorous physical activity and light-intensity physical activity during a period in the COVID-19 pandemic when access to community-based programs was restricted and then restored to follow public health requirements. Six monthly surveys were administered between October 2021 and May 2022 (N = 890). Hypotheses were tested using latent growth curve modelling. Injunctive and descriptive norms did not significantly change over time. Social network and relatedness had a negative linear change whereas social support amount and quality had a positive linear change. Social participation and light-intensity physical activity changed quadratically, and moderate-to-vigorous physical activity demonstrated linear and quadratic change over time. Social network negatively predicted the positive quadratic curve of moderate-to-vigorous physical activity, and descriptive norms positively predicted the quadratic curve of light-intensity physical activity. The second study investigated associations between seven social connection constructs and trajectories of change in stress, negative affect, and positive affect among an older adult sample. Latent growth curve modelling indicated stress and negative affect declined linearly, while positive affect followed a positive quadratic change. Descriptive norms negatively predicted the change in stress, whereas social participation positively predicted the change in negative affect and negatively predicted the change in positive affect. Together findings from these studies provide insights into the nature of these relationships and suggests levels of social connections may make older adults resilient to factors that change their physical activity and psychological well-being.
Randallia granulata Miers 1885
Creators: name: Froglia, Carlo
name: Clark, Paul F.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Leucosiidae
Randallia
Randallia granulata

description: Randallia granulata Miers 1885: 588; 1886: 317, pl. XXV, fig. 1.
 Remarks. Galil (2003) provisionally retained this species in Randallia Stimpson 1857, while Ng and Richer de Forges (2007) assigned it to Tanaoa Galil, 2003. Ng et al. (2008: 93, 94, respectively) incorrectly listed Randallia granulata Miers 1886 twice, see Randallia and Tanaoa.
 Valid as Tanaoa granulata (Miers, 1885).
description: Published as part of Froglia, Carlo & Clark, Paul F., 2011, The forgotten Narrative of H. M. S. Challenger and the implications for decapod nomenclature, pp. 45-56 in Zootaxa 2788 on page 50, DOI: 10.5281/zenodo.200635
Saxifraga tricuspidata Rottboll
Creators: name: Desjardins, Émilie
name: Lai, Sandra
name: Payette, Serge
name: Dubé, Martin
name: Sokoloff, Paul C.
name: St-Louis, Annie
name: Poulin, Marie-Pier
name: Legros, Jade
name: Sirois, Luc
name: Vézina, François
name: Tam, Andrew
name: Berteaux, Dominique
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Saxifragales
Saxifragaceae
Saxifraga
Saxifraga tricuspidata

description: Saxifraga tricuspidata Rottbøll Figure 17G Materials examined. CANADA – Nunavut • Ellesmere Island, CFS Alert; 82°26′39″N, 61°57′18″W; 159 m a.s.l.; 26 Jul. 2019; habitat: mesic, with till and rocks as substrates, dominated by Juncus biglumis, moss, and lichen; QFA0635004. Identification. Plants 3.5–7.5 cm high; herbaceous; caespitose (cushion shape). Taproots and rhizomes present. Stems 2.5–7.0 cm long; erect; hairy, with glandular hairs. Leaves basal and cauline; heterophyllous; alternate; subsessile (basal leaves) or sessile (cauline leaves). Basal leaf blades 3–10 mm long, 1.5–4.0 mm wide; linear or oblanceolate; bases cuneate; lobed, with 1–3 triangular, cuspidate lobes; green or red; abaxial and adaxial surfaces both glabrous; margins ciliate, with non-glandular hairs. Cauline leaf blades 2.5–6.5 mm long, 0.5–1.5 mm wide; elliptic or oblanceolate; unlobed or sometimes lobed, with narrow triangular lobes; abaxial and adaxial surfaces both glabrous; margins ciliate, with non-glandular hairs; apices cuspidate. Inflorescence a cyme, with 2–7 flowers. Pedicels hairy. Sepals 5; 1.5–2.0 mm long, 0.8– 1.5 mm wide; ovate; green or purple; surface glabrous; margins glabrous; apices obtuse. Petals 5; 2.5–5.0 mm long, 1–3 mm wide; obovate or oblanceolate; unlobed; ivory or yellow, with apically yellow, orange, or red dots. Androecium with 10 stamens and 0.3–0.7 mm long anthers. Gynoecium with 2 styles. Characteristics allowing to distinguish S. tricuspidata from the other Saxifraga species present on Ellesmere Island can be found under S. cernua.
description: Published as part of Desjardins, Émilie, Lai, Sandra, Payette, Serge, Dubé, Martin, Sokoloff, Paul C., St-Louis, Annie, Poulin, Marie-Pier, Legros, Jade, Sirois, Luc, Vézina, François, Tam, Andrew & Berteaux, Dominique, 2021, Survey of the vascular plants of Alert (Ellesmere Island, Canada), a polar desert at the northern tip of the Americas, pp. 181-225 in Check List 17 (1) on page 219, DOI: 10.15560/17.1.181
Long-time Behavior of a Two-layer Model of Baroclinic Quasi-geostrophic Turbulence
Creators: name: Farhat, Aseel
name: Panetta, R. Lee
name: Titi, Edriss S.
name: Ziane, Mohammed
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q35, 76D03, 76F10

description: We study a viscous two-layer quasi-geostrophic beta-plane model that is forced by imposition of a spatially uniform vertical shear in the eastward (zonal) component of the layer flows, or equivalently a spatially uniform north-south temperature gradient. We prove that the model is linearly unstable, but that non-linear solutions are bounded in time by a bound which is independent of the initial data and is determined only by the physical parameters of the model. We further prove, using arguments first presented in the study of the Kuramoto-Sivashinsky equation, the existence of an absorbing ball in appropriate function spaces, and in fact the existence of a compact finite-dimensional attractor, and provide upper bounds for the fractal and Hausdorff dimensions of the attractor. Finally, we show the existence of an inertial manifold for the dynamical system generated by the model's solution operator. Our results provide rigorous justification for observations made by Panetta based on long-time numerical integrations of the model equations.
The complete chloroplast genome sequence of Heteropolygonatum ginfushanicum (Asparagaceae) and phylogenetic analysis
Creators: name: Gu, Li
name: Su, Ting
name: Luo, Guang-Ling
name: Hu, Guo-Xiong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: Heteropolygonatum ginfushanicum is an endemic epiphytic herb in China. The complete chloroplast (cp) genome of H. ginfushanicum is reported in this study. The total length of the cp genome is 155,508 bp with a typical quadripartite structure consisting of a large single copy region (LSC) of 84,552 bp and a small single copy region (SSC) of 18,528 bp, separated by a pair of 26,214 bp inverted repeats (IRs). It encodes a total of 113 unique genes, including 79 protein-coding, 30 tRNA, and four rRNA genes. Phylogenetic analysis indicated that H. ginfushanicum is sister to Heteropolygonatum marmoratum within subfamily Nolinoideae.
title: Application of Nanosilica with Controlled Particle Size for Performance Enhancement of Cementitious Mixtures
Creators: name: Farjad, Pegah
Publisher: name: Schulich School of Engineering
Year: 2024
Subjects: subject: Nanosilica
subject: Particle Size
subject: Rheological Properties
subject: Compressive Strength
subject: Microstructure
subject: Cement Paste
subject: Hydration
subject: Engineering--Civil
subject: Engineering--Chemical
subject: Materials Science

description: This study thoroughly investigated the synthesis and application of silica nanoparticles (nanosilica) with controlled sizes to enhance the performance of cementitious mixtures. While nanosilica has been widely studied for its potential to improve cementitious mixture properties, existing studies typically employed commercially available nanosilica with a particular particle size, leaving the effect of particle size variation largely unexplored or resulting in inconsistent or controversial findings regarding its effect on performance. To address this gap, nanosilica were synthesized in-house, enabling precise control over particle size. Techniques such as transmission electron microscopy, dynamic light scattering, ζ-potential, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy were employed to characterize the prepared nanosilica samples. The study focused on four distinct particle sizes (10, 35, 65, and 90 nm) to cover the whole range of nanoscale and systematically investigated the compressive strength, hydration, and rheological properties of cement paste incorporating nanosilica at different concentrations of 1, 2 and 3 wt%. Microstructural analyses, including thermogravimetric analysis and quantitative X-ray diffraction, were also conducted on the selected cement pasts incorporating nanosilica to shed light on the mechanisms underlying the performance of nanosilica in the paste. The findings revealed that the smallest particle size of nanosilica (10 nm) provided the highest compressive strength enhancement (over 100% enhancement when used at 2 wt% of cement), surpassing the reported data for the commercially available nanosilica available in the literature. The enhancing effects of the nanosilica particles on the compressive strength of the pastes were less substantial when their particle size increased from 10 to 90 nm. This study provided valuable insights into the effects of nanosilica particle size on the properties of cementitious mixtures, offering a potential pathway for the development of advanced construction materials with superior performance.
Light scalars in semi-leptonic decays of heavy quarkonia
Creators: name: Achasov, N. N.
name: Kiselev, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the mechanism of production of the light scalar mesons in the $D_s^+\toπ^+π^- e^+ν$ decays: $D_s^+\to s\bar s e^+ν\to [σ(600)+f_0(980)] e^+ν\toπ^+π^- e^+ν$, and compare it with the mechanism of production of the light pseudoscalar mesons in the $D_s^+\to (η/η') e^+ν$ decays: $D_s^+\to s\bar s e^+ν\to (η/η')e^+ν$. We show that the $s\bar s\toσ(600)$ transition is negligibly small in comparison with the $s\bar s\to f_0(980)$ one. As for the the $f_0(980)$ meson, the intensity of the $s\bar s\to f_0(980)$ transition makes near thirty percent from the intensity of the $s\bar s\toη_s$ ($η_s=s\bar s$) transition. So, the $D_s^+\toπ^+π^- e^+ν$ decay supports the previous conclusions about a dominant role of the four-quark components in the $σ(600)$ and $f_0(980)$ mesons.
description: 8 pages, 3 figures, the variant matches the publication in Phys. Rev. D
Stenorhynchus spinifer Miers 1885
Creators: name: Froglia, Carlo
name: Clark, Paul F.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Brentidae
Stenorhynchus
Stenorhynchus spinifer

description: Stenorhynchus spinifer Miers 1885: 586; 1886: 7, pl. I, fig. 2.
 Remarks. The 1885 description is short: “... a new species of Stenorhynchus (Stenorhynchus spinifer), distinguished from all its congeners by the strongly developed supra-ocular and post-ocular spines”. A more extended description, together with a figure of the anterior part of carapace, were provided by Miers (1886: 7, pl. I, fig. 2). Both descriptions were based on a mutilated specimen devoid of all legs, dredged off St. Paul’s Rocks in the South Atlantic. Holthuis et al. (1980) in their review of the decapods of St Paul’s Rocks commented that “So far as we know the species has not been reported upon since its original description, [which is quoted as Miers, 1886] and its true identity is still uncertain”. Stenorhynchus spinifer is not listed in Ng et al. (2008).
 The holotype of S. spinifer Miers, 1885, is extant in the Natural History Museum, London and was examined for the present study. The condition of the specimen is poor but some morphological characters are discernable. Its assignment to Stenorhynchus Lamarck, 1818, is considered doubtful as the carapace spinulation compares well with that illustrated by Miers (1886: pl. I, fig. 4) for Achaeopsis spinulosa Stimpson, 1857 from Simon’s Bay, South Africa. This specimen too is extant and was examined. The morphologies of their first male pleopods are similar suggesting that the two specimens described by Miers may be synonymous. Material of Dorhynchus thomsoni Thomson, 1873, was also examined. All three species look remarkably similar.
 The systematics of A. spinulosus and D. thomsoni has been questioned. Rathbun (1925), Barnard (1950), Griffin (1966) and Griffin and Tranter (1986) assigned both species to Achaeopsis Stimpson, 1857, while Bouvier (1940), Monod (1956), Zariquiey Álvarez (1968), Christiansen (1969), Ingle (1980) and Manning & Holthuis (1981) retained Achaeopsis and Dorhynchus Thomson, 1873 as distinct genera. Moreover, Manning & Holthuis (1981) concluded that the occurrence of D. thomsoni outside the eastern Atlantic required verification. Achaeopsis (type species A. spinulosus Stimpson, 1857) and Dorhynchus (type species D. thomsoni Thomson, 1873) are placed on the ICZN Official List (Opinion 712). This current study suggests that the systematics of A. spinulosus, S. spinifer and D. thomsoni from the Atlantic should be revisited.
 Valid as Stenorhynchus spinifer Miers, 1885, incertae sedis.
description: Published as part of Froglia, Carlo & Clark, Paul F., 2011, The forgotten Narrative of H. M. S. Challenger and the implications for decapod nomenclature, pp. 45-56 in Zootaxa 2788 on page 49, DOI: 10.5281/zenodo.200635
Papers in Pidgin and Creole Linguistics No. 4
Creators: name: Wurm, S.A. (Ed.)
Publisher: name: Pacific Linguistics
Year: 1985

description: A-72
description: Contents iiiINTRODUCTION iv{SUZANNE ROMAINE} 1-23Relative clauses in child language, pidgins and Creoles{PETER MÜHLHÄUSLER} 25-51The number of Pidgin Englishes in the Pacific{LINDA SIMONS} 53-65Malaitan influence on two grammatical particles in Solomon Islands Pijin{CHRISTINE JOURDAN} 67-96Creolisation, nativisation or substrate influence: what is happening to bae in Solomon Islands Pijin{ROGER M. KEESING} 97-132Subject pronoun and tense-marking in Southeast Solomonic languages and Solomons Pijin: grounds for substratomania?{DOUG MUNRO} 133-141On the lack of English-speaking Tuvaluans in the nineteenth century{WALTER SEILER} 143-153The Malay language in New Guinea{ANNA SHNUKAL} 155-175Variation in Torres Strait Creole: a preliminary discussion{MARGARET C. SHARPE} 177-194Kriol — an Australian language resource{JOHN R. SANDEFUR} 195-214Dynamics of an Australian creole system{PHILIP BAKER and R. RAMNAH} 215-238Mauritian Bhojpuri: an Indo-Aryan language spoken in a predominantly creolophone society
title: A Census of Virgo Ultra-Compact Dwarf Galaxies for Central Black Holes
Creators: name: Thompson. Solveig
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Ultra-compact dwarf galaxies
subject: Black holes
subject: Compact stellar systems
subject: Low-mass galaxies
subject: Astronomy and Astrophysics

description: Supermassive black hole (BH) detections in ultra-compact dwarf galaxies (UCDs) indicate that these objects are the nuclei of formerly larger dwarf galaxies that underwent tidal stripping. Ground-based telescopes are limited in their capacity to observe dim, compact objects such as UCDs, however the James Webb Space Telescope has expanded the field. In this work, integral field unit spectroscopy data is radially binned, optimizing signal-to- noise to measure reliable stellar kinematics in the cores of six UCDs. Velocity dispersion measurements were then used in dynamical modelling to determine the presence of a central BH affecting the kinematics. The results of this work found four of the six UCDs had central BH measurements at a 1σ significance, although dynamical modelling did suggest all of them had a BH. Adding these results to the five previously probed, 11 UCDs have been analyzed and nine have signatures of central BHs.
Geometry fluctuations in a two-dimensional quantum antiferromagnet
Creators: name: Jagannathan, Anuradha
name: Douçot, Benoit
name: Szallas, Attila
name: Wessel, Stefan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The paper considers the effects of random fluctuations of the local spin connectivities (fluctuations of the geometry) on ground state properties of a two-dimensional quantum antiferromagnet. We analyse the behavior of spins described by the Heisenberg model as a function of what we call phason flip disorder, following a terminology used for aperiodic systems. The calculations were carried out both within linear spin wave theory and using quantum Monte Carlo simulations. An "order by disorder" phenomenon is observed in this model, wherein antiferromagnetism is found to be enhanced by phason disorder. The value of the staggered order parameter increases with the number of defects, accompanied by an increase in the ground state energy of the system.
description: 5 pages, 7 figures. Shortened and corrected version (as accepted for publication in Physical Review B)
Medaeus haswelli Miers 1885
Creators: name: Froglia, Carlo
name: Clark, Paul F.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Xanthidae
Medaeus
Medaeus haswelli

description: Medaeus haswelli Miers 1885: 588; 1886: 117, pl. XI, fig. 2.
 Remarks. Guinot (1967) erected Miersiella to accommodate “ Medaeus haswelli Miers, 1886 (p. 117, pl. 11, fig. 2– 2c).”
 Valid as Miersiella haswelli (Miers, 1885).
description: Published as part of Froglia, Carlo & Clark, Paul F., 2011, The forgotten Narrative of H. M. S. Challenger and the implications for decapod nomenclature, pp. 45-56 in Zootaxa 2788 on page 50, DOI: 10.5281/zenodo.200635
Injective objects and retracts of Fraïssé limits
Creators: name: Kubiś, Wieslaw
Publisher: name: arXiv
Year: 2011
Subjects: subject: Category Theory (math.CT)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 18A30, 18B35 (Primary) 03C13, 03C50, 08A35 (Secondary)

description: We present a purely category-theoretic characterization of retracts of Fraïssé limits. For this aim, we consider a natural version of injectivity with respect to a pair of categories (a category and its subcategory). It turns out that retracts of Fraïssé limits are precisely the objects that are injective relatively to such a pair. One of the applications is a characterization of non-expansive retracts of Urysohn's universal metric space.
description: 33 pages; minor corrections; extended introduction and more references. Final version
Molecular epidemiology of enteroviruses in young children at increased risk of type 1 diabetes
Creators: name: Sioofy-Khojine, Amir-Babak
name: Oikarinen, Sami
name: Honkanen, Hanna
name: Huhtala, Heini
name: Lehtonen, Jussi P.
name: Briese, Thomas
name: Hyöty, Heikki
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Pediatrics
subject: Diabetes in children
subject: Enteroviruses--Analysis

description: Young children are susceptible to enterovirus (EV) infections, which cause significant morbidity in this age group. However, the current knowledge regarding the epidemiology of EVs and the circulating virus strains is mostly based on viruses detected in children with severe diseases leading to contact with the health care system, while the vast reservoir of EVs that circulate in the general population is less characterized.
Lorentz covariant nucleon self-energy decomposition of the nuclear symmetry energy
Creators: name: Cai, Bao-Jun
name: Chen, Lie-Wen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Using the Hugenholtz-Van Hove theorem, we derive analytical expressions for the nuclear symmetry energy $E_{sym}(ρ)$ and its density slope $L(ρ)$ in terms of the Lorentz covariant nucleon self-energies in isospin asymmetric nuclear matter. These general expressions are useful for determining the density dependence of the symmetry energy and understanding the Lorentz structure and the microscopic origin of the nuclear symmetry energy in relativistic covariant formulism. As an example, we analyze the Lorentz covariant nucleon self-energy decomposition of $E_{sym}(ρ)$ and $L(ρ)$ and derive the corresponding analytical expressions within the nonlinear $σ$-$ω$-$ρ$-$δ$ relativistic mean field model.
description: 6 pages, 2 figures. Typos fixed and discussions added. Accepted version to appear in PLB
Uncertainty in malaria simulations in the highlands of Kenya: Relative contributions of model parameter setting, driving climate and initial condition errors
Creators: name: Tompkins, Adrian M.
name: Thomson, Madeleine C.
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Malaria--Prevention
subject: Genetic algorithms
subject: Malaria--Epidemiology
subject: Immunology
subject: FOS: Clinical medicine

description: In this study, experiments are conducted to gauge the relative importance of model, initial condition, and driving climate uncertainty for simulations of malaria transmission at a highland plantation in Kericho, Kenya. A genetic algorithm calibrates each of these three factors within their assessed prior uncertainty in turn to see which allows the best fit to a timeseries of confirmed cases. It is shown that for high altitude locations close to the threshold for transmission, the spatial representativeness uncertainty for climate, in particular temperature, dominates the uncertainty due to model parameter settings. Initial condition uncertainty plays little role after the first two years, and is thus important in the early warning system context, but negligible for decadal and climate change investigations. Thus, while reducing uncertainty in the model parameters would improve the quality of the simulations, the uncertainty in the temperature driving data is critical. It is emphasized that this result is a function of the mean climate of the location itself, and it is shown that model uncertainty would be relatively more important at warmer, lower altitude locations.
A profile of the expression of a metabolic gene cluster in Arabidopsis
Creators: name: Johnson, Eric Eugene
Publisher: name: University of British Columbia
Year: 2012

description: Plant cells often display a microtubule reorganization event when encountered with stress. This has been found to be integral for the reaction to stresses such as aluminum toxicity and cold stress. A cDNA microarray was previously conducted that identified MARNERAL SYNTHASE (MRN1), an oxidosqualene cyclase that produces the triterpene marneral, as the most highly upregulated gene when microtubule dynamics are disrupted in Arabidopsis. This work identifies two cytochrome P450s, CYP71A16 and CYP705A12, that are highly coregulated with MRN1 and are located within close proximity to the MRN1 loci. Using GC-FID and GC-MS, MRN1 and CYP71A16 are shown to function together in a single pathway in what is known as a metabolic gene cluster, while further testing shows that they are not in fact regulated by microtubule dynamics. The expression profile of these genes is explored since there is no known function for marneral or its related metabolites. Using a promoter-reporter and real time PCR analysis, it was found that the hormones ABA and methyl jasmonate induce expression of the three genes to different degrees depending on seedling age. Osmotic stressors, including mannitol and NaCl treatments, also induce the expression of these genes. MRN1, in particular, seems to show the highest level of induction suggesting that the pathway is transcriptionally regulated through MRN1. These conditions are shown to not affect the growth response in mutant plants unable to metabolize marneral or plants ectopically expressing different combinations of the three genes. These conditions are intriguing because most triterpenes derived from secondary metabolism are generally thought to play roles in defense, yet these data suggest that the pathway is induced under abiotic stress conditions. The marneral cluster may have evolved to be expressed under osmotic stress conditions in a sense to protect the plants water from pathogens or herbivores. It is also reasonable to speculate that these compounds may play roles in signalling or membrane modification. Further experiments are proposed that could test these hypotheses.
3D Hopping Conduction in SnO2 nanobelts
Creators: name: Viana, E. R.
name: Gonzalez, J. C.
name: Ribeiro, G. M.
name: de Oliveira, A. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The temperature dependence of the electrical transport of a individual tin oxide nanobelt was measured, in darkness, from 400 to 5K. We found four intrinsic electrical transport mechanisms through the nanobelt. It starts with Thermal-Activation Conduction between 400 and 314K, Nearest-Neighbor Hopping conduction between 268 and 115K, and Variable Range Hopping conduction below 58K, with a crossover from the 3D-Mott to the 3D-Efros-Shklovskii regime at 16K. We claim that this sequence reveal the three-dimensional nature of the electrical transport in the SnO2 nanobelts, even they are expected to behave as one-dimensional systems.
description: 3 pages, 4 figures, Accepted for publication on "physica status solidi (RRL) - Rapid Research Letters", DOI: 10.1002/pssr.201206161
title: Toward a Dynamic, Integrative Understanding of Hybrid Work Teams
Creators: name: Aldana, Aliza
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Hybrid work
subject: Hybrid Teamwork
subject: Telecommuting
subject: Flexible Work
subject: Team Virtuality
subject: Psychology
subject: FOS: Psychology
subject: Psychology--Industrial

description: Purpose: The purpose of this study was to extend the limited understanding of the unique nature of hybrid teamwork, which has been underdeveloped in the existing literature despite its high prevalence in today’s workforce. Method: A qualitative multiple case study was employed, and involved interviews about experiences of hybrid work with team members and leaders of four hybrid work teams. Archival documents related to hybrid work were also collected from participating teams. Analysis involved deductive-inductive within-case thematic analyses for each team, followed by a comparative cross-case analysis. Findings: The cross-case analysis identified three aggregate dimensions: dynamic dispersion, the technology paradox, and me versus we: the flexibility paradox. Dynamic dispersion findings indicated that individual work practices are highly dynamic and variable, influenced by numerous factors, and that these practices are often highly idiosyncratic between team members and change dynamically over time within person. These individual work practices influence team-level virtuality, making geographic dispersion dynamic over time. The technology paradox dimension demonstrated that technology is being experienced as both an affordance and a hindrance to teamwork, both of which could serve to increase or decrease team virtuality. Finally, me versus we: the flexibility paradox identifies a new concept in which tensions between individual autonomy and team effectiveness emerge in hybrid work teams. Implications: This study enhances our understanding of hybrid team virtuality, introduces the flexibility paradox, and is the first primary study to the author’s knowledge to investigate hybrid teams accounting for the dynamic and changing work practices within and across individuals.
Knots from wall--anti-wall annihilations with stretched strings
Creators: name: Nitta, Muneto
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A pair of a domain wall and an anti-domain wall is unstable to decay. We show that when a vortex-string is stretched between the walls, there remains a knot soliton (Hopfion) after the pair annihilation.
description: 10 pages, 6 figures, published version. arXiv admin note: text overlap with arXiv:1205.2442
Short-term effectiveness of HIV care coordination among persons with recent HIV diagnosis or history of poor HIV outcomes
Creators: name: Nash, Denis
name: Robertson, McKaylee M.
name: Penrose, Kate
name: Chamberlin, Stephanie
name: Robbins, Rebekkah S.
name: Braunstein, Sarah L.
name: Myers, Julie E.
name: Abraham, Bisrat
name: Kulkarni, Sarah Gorrell
name: Waldron, Levi
name: Levin, Bruce
name: Irvine, Mary K.
Publisher: name: Columbia University
Year: 2018
Subjects: subject: HIV (Viruses)--Research
subject: HIV infections--Treatment
subject: Immunology
subject: FOS: Clinical medicine
subject: Biometry

description: The New York City HIV Care Coordination Program (CCP) combines multiple evidence-based strategies to support persons living with HIV (PLWH) at risk for, or with a recent history of, poor HIV outcomes. We assessed the comparative effectiveness of the CCP by merging programmatic data on CCP clients with population-based surveillance data on all New York City PLWH. A non-CCP comparison group of similar PLWH who met CCP eligibility criteria was identified using surveillance data. The CCP and non-CCP groups were matched on propensity for CCP enrollment within four baseline treatment status groups (newly diagnosed or previously diagnosed and either consistently unsuppressed, inconsistently suppressed or consistently suppressed). We compared CCP to non-CCP proportions with viral load suppression at 12-month follow-up. Among the 13,624 persons included, 15∙3% were newly diagnosed; among the 84∙7% previously diagnosed, 14∙2% were consistently suppressed, 28∙9% were inconsistently suppressed, and 41∙6% were consistently unsuppressed in the year prior to baseline. At 12-month follow-up, 59∙9% of CCP and 53∙9% of non-CCP participants had viral load suppression (Relative Risk = 1.11, 95%CI:1.08–1.14). Among those newly diagnosed and those consistently unsuppressed at baseline, the relative risk of viral load suppression in the CCP versus non-CCP participants was 1.15 (95%CI:1.09–1.23) and 1.32 (95%CI:1.23–1.42), respectively. CCP exposure shows benefits over no CCP exposure for persons newly diagnosed or consistently unsuppressed, but not for persons suppressed in the year prior to baseline. We recommend more targeted case finding for CCP enrollment and increased attention to viral load suppression maintenance.
title: Establishing Reliability and Objective Evaluation of 12 Weeks of Robotic Walking: Spasticity, Contracture and Muscle Strength
Creators: name: Isapure, Kiran Mahadev
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Cerebral palsy
subject: Spasticity
subject: Contracture
subject: Muscle weakness
subject: Robotic gait training
subject: Test-retest reliability
subject: Engineering--Biomedical

description: Background: Neurological conditions like Cerebral Palsy (CP) often lead to spasticity, contracture, and muscle weakness, affecting mobility. Current clinical measures for these impairments lack reliability and/or responsiveness to change and cannot differentiate between spasticity and contracture. Using objective tools like stationary dynamometers can provide more objective assessments and resolution to detect change. Robotic training provides ways to reduce sedentary time and experience walking in a safe and stable frame at home or in the community, potentially changing spasticity, contracture, and muscle weakness. Objective Aim 1 was to establish reliability for measuring knee flexor spasticity, contracture and knee extensor muscle strength in children who cannot walk due to neurological disorders using a stationary dynamometer. Aim 2 was to evaluate the impact of 12 weeks of robotic training on knee flexor spasticity, contracture and knee extensor muscle strength in the same population. Methods Project 1: Assessment of knee flexor spasticity, contracture and knee extensor muscle strength was conducted one month apart using a stationary dynamometer. Test-retest reliability was assessed using Intraclass Correlation Coefficients, Standard Error Measurement and Bland-Altman plots. Project 2: The impact of 12 weeks of robotic training on knee flexor spasticity, contracture and knee extensor muscle strength was evaluated using a stationary dynamometer. Wilcoxon signed-rank test was used to assess the significance of the change in spasticity, contracture and muscle strength following 12 weeks of robotic training. Results Project 1: Good relative reliability was observed for spasticity and contracture outcomes except at a higher speed. Absolute reliability was less than 15% of the mean baseline value for spasticity outcomes and more than 25% for outcomes influenced by contracture. Good relative reliability was observed for torque outcome of muscle strength and moderate relative reliability was observed for muscle activity outcome. Project 2: Twelve weeks of robotic training significantly reduced spasticity. 2 of 3 outcomes influenced by contracture were also reduced significantly with the remaining outcome unchanged. All five participants showed increased strength after 12 weeks of robotic training.
Universality in p-spin glasses with correlated disorder
Creators: name: Bonzom, Valentin
name: Gurau, Razvan
name: Smerlak, Matteo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We introduce a new method, based on the recently developed random tensor theory, to study the p-spin glass model with non-Gaussian, correlated disorder. Using a suitable generalization of Gurau's theorem on the universality of the large N limit of the p-unitary ensemble of random tensors, we exhibit an infinite family of such non-Gaussian distributions which leads to same low temperature phase as the Gaussian distribution. While this result is easy to show (and well known) for uncorrelated disorder, its robustness with respect to strong quenched correlations is surprising. We show in detail how the critical temperature is renormalized by these correlations. We close with a speculation on possible applications of random tensor theory to finite-range spin glass models.
description: 5 pages, 2 figures
title: Efficiency and Bandwidth Extension of Digital Doherty Amplifiers Using Digital Signal Processing Techniques
Creators: name: Khazani, Mohammad Hossein
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Engineering--Electronics and Electrical

description: In this thesis, a comprehensive investigation into DDPAs was carried out. Initially, attention was directed towards phase adjustment and input power splitting, and they were explored for their impacts on efficiency and linearity. Through the utilization of complex gain splitting, which combines standalone power splitting and phase adjustment, efficiency enhancements of up to 9.7% were achieved for a 64-QAM modulated signal transmitted at the DDPA’s central frequency. However, this improvement came at the expense of the DDPA’s linearity performance. Subsequently, frequency-domain power splitting techniques were introduced. These algorithms aim to optimize splitting parameters to maximize efficiency and bandwidth but often encounter linearity issues observed in frequency-independent methods. To mitigate these issues, ACPR measurements were conducted using modulated signals, offering insight into the effects of splitting factors. An optimization algorithm was then presented, focusing on maximizing PAE and bandwidth (and gain flatness) improvement while maintaining linearity lower than that of the conventional Doherty mode by restricting ACPR growth. This algorithm shed light on the trade-off between PAE, bandwidth extension, and linearity. It was demonstrated that by adjusting the value of the desired flat gain, one or two goals of the optimization problem could be prioritized at the expense of others. Finally, RF measurements were undertaken to validate the effectiveness of the algorithm. PAE enhancements ranged from 4.16% to 6.1% at various carrier frequencies, while bandwidth extension varied between 85 and 105 MHz.
The effect of systematics on polarized spectral indices
Creators: name: Wehus, Ingunn Kathrine
name: Fuskeland, Unni
name: Eriksen, Hans Kristian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study four particularly bright polarized compact objects (Tau A, Virgo A, 3C273 and Fornax A) in the 7-year WMAP sky maps, with the goal of understanding potential systematics involved in estimation of foreground spectral indices. We estimate the spectral index, the polarization angle, the polarization fraction and apparent size and shape of these objects when smoothed to a nominal resolution of 1 degree FWHM. Second, we compute the spectral index as a function of polarization orientation, alpha. Because these objects are approximately point sources with constant polarization angle, this function should be constant in the absence of systematics. However, computing it for the K- and Ka-band WMAP data we find strong index variations for all four sources. For Tau A, we find a spectral index beta=-2.59+-0.03 for alpha=30 degrees, and beta=-2.03+-0.01 for alpha=50 degrees. On the other hand, the spectral index between Ka and Q band is found to be stable. A simple elliptical Gaussian toy model with parameters matching those observed in Tau A reproduces the observed signal, and shows that the spectral index is in particular sensitive to the detector polarization angle. Based on these findings, we first conclude that estimation of spectral indices with the WMAP K-band polarization data at 1 degree scales is not robust. Second, we note that these issues may be of concern for ground-based and sub-orbital experiments that use the WMAP polarization measurements of Tau A for calibration of gain and polarization angles.
description: 5 pages, 6 figures, submitted to ApJ; new figure and expanded conclusion