cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Daily physical function and frailty in persons with Parkinson's disease : a focus on females
Creators: name: Roland, Kaitlyn Patricia
Publisher: name: University of British Columbia
Year: 2012

description: Persons with Parkinson’s disease (PD) are often excluded from frailty studies, and thus little is known about how frailty influences decline in physiological capacity in persons with PD. Impaired physiological capacity impacts the ability to remain physically active, which reduces physical function necessary for independent living. The overall purpose of this dissertation was to examine physiological capacity (i.e., muscle activation patterns) and physical activity in males and females with PD during routine daily activities to determine whether they influence physical function and frailty. An extensive literature review of sex differences in PD highlights that greater declines in gait speed, balance and motor function occur in females compared with males. This dissertation demonstrated persons with PD and females were weaker and have less muscle quiescence, as measured with gaps in the electromyography (EMG), compared with controls and males with PD. These results provide insight into mechanisms (i.e., physiological capacity) that determine PD and sex-related declines in functional performance. In addition, greater muscle activity and less quiescence in females with PD may perpetuate frailty through increased muscle fatigue and slowness of movement. Females with PD are more vulnerable to prefrailty than males and factors that are associated with frailty are quality of life (QoL) and self-reported exhaustion. The neuromuscular changes associated with frailty exacerbate PD, which may create greater muscle fatigue resulting in self-reported exhaustion. In conclusion, research presented within this dissertation demonstrates that addressing frailty in PD is important, especially in females who are at greater risk for functional decline. This research presents new knowledge by suggesting frail females with PD remain physically active during daily life and that disease management may better reflect frailty than disease severity or duration. Understanding how frailty concurrently exists with PD and how these conditions progress within the aging adult may enhance identification and implementation of management strategies aimed at improving functional independence and QoL.
Chicoreus (Triplex) ryukyuensis Shikama 1978
Creators: name: Houart, Roland
name: Héros, Virginie
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Chicoreus
Chicoreus ryukyuensis

description: Chicoreus (Triplex) ryukyuensis Shikama, 1978 Fig. 1F Chicoreus (Triplex) ryukyuensis Shikama, 1978: 35, pl. 7, figs 1-2. MATERIAL EXAMINED. — Tonga. BORDAU 2: stn CP 1582, 18°41’S, 174°03’W, 79-82 m, 2 lv. DISTRIBUTION. — Okinawa, Guam (R. Houart coll., unpublished) and now Tonga (new record), live in 79-82 m. REMARKS. — Chicoreus ryukyuensis is included in the same group of small species as C. nobilis. It differs from C. nobilis in having a globose rather than conical protoconch and 3 frondose spines covering the entire length of the siphonal canal.
description: Published as part of Houart, Roland & Héros, Virginie, 2008, Muricidae (Mollusca: Gastropoda) from Fiji and Tonga, pp. 437-480 in Mémoires du Muséum national d'Histoire naturelle 196 on page 445
description: {"references": ["Venus 17 (4): 179 - 185. SHIKAMA T. 1978. Description of new and noteworthy Gastropoda from LAMARCK J. B. P. A. de M. de 1822. - Histoire naturelle des animaux sans western Pacific Ocean (I). Science Reports of the Yokosuka City Museum vertebres, Tome septieme, L'auteur, Paris, 711 p. 25: 35 - 42."]}
Bedia Muvahhit and Neyyire Neyir
Creators: name: Atakav, Eylem
Publisher: name: Columbia University
Year: 2017
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: The Ottoman Empire dissolved after the First World War and was replaced by the self-consciously modern and Westernized Republic of Turkey in 1923. Turkish culture under the Ottoman rule has been characterized by historians as a traditional Islamic culture that experienced very little change for centuries. What change did occur has typically been attributed to Western contact. The Republican state evolved into what later scholars called a feminist state, which made women’s equality in the public sphere a national policy. Indeed, a secular civil code replaced the Islamic law in 1926, giving women equal civil rights. It is in this transitional period that Bedia Muvahhit became a pioneer in cinema.
Refining inflation using non-canonical scalars
Creators: name: Unnikrishnan, Sanil
name: Sahni, Varun
name: Toporensky, Aleksey
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper revisits the Inflationary scenario within the framework of scalar field models possessing a non-canonical kinetic term. We obtain closed form solutions for all essential quantities associated with chaotic inflation including slow roll parameters, scalar and tensor power spectra, spectral indices, the tensor-to-scalar ratio, etc. We also examine the Hamilton-Jacobi equation and demonstrate the existence of an inflationary attractor. Our results highlight the fact that non-canonical scalars can significantly improve the viability of inflationary models. They accomplish this by decreasing the tensor-to-scalar ratio while simultaneously increasing the value of the scalar spectral index, thereby redeeming models which are incompatible with the cosmic microwave background (CMB) in their canonical version. For instance, the non-canonical version of the chaotic inflationary potential, $V(ϕ) \sim λϕ^4$, is found to agree with observations for values of $λ$ as large as unity ! The exponential potential can also provide a reasonable fit to CMB observations. A central result of this paper is that {\em steep potentials} (such as $V \propto ϕ^{-n}$) usually associated with dark energy, can drive inflation in the non-canonical setting. Interestingly, non-canonical scalars violate the consistency relation $r = -8n_T$, which emerges as a {\em smoking gun} test for this class of models.
description: 32 pages, 7 figures, new results, similarity between Braneworld inflation and inflation sourced by non-canonical scalars highlighted. Possibility of Quintessential inflation discussed. Accepted for publication in JCAP
title: The Effects of Universal and Rotating Ultrasonic Inserts on Wrist Movement, Scaling Time Efficiency, and Cumulative Trauma Risk in Dental Hygienists
Creators: name: Hawn, Christine Colavita
Publisher: name: Old Dominion University Libraries
Year: 2004

description: The purpose of this study was to determine if differences existed in range of wrist movements and scaling time efficiency in dental hygienists that use a rotating ultrasonic insert as compared to those who use a standard universal insert. A convenience sample of 30 consenting experienced dental hygienists from the Norfolk area who met inclusion criteria was invited to be subjects. Using a crossover research design, each experimental subject used the rotating ultrasonic scaling insert to remove 2 cc artificial calculus from a typodont in a controlled, simulated clinical situation for up to 15 minutes. While scaling, each subject wore the WristSensor™ goniometry gloves (Greenleaf Medical Systems, Palo Alto, California), which determined changes in wrist movements (flexion and extension and ulnar and radial deviations), measured as a deviation from the neutral position. Following a 15-minute rest period, each subject followed the same procedure using the standard universal ultrasonic scaling insert. Scaling time efficiency was determined using a Modified Volpe-Manhold Calculus Index. Data analysis using a paired t-test (p=. 05) revealed no statistically significant differences in wrist movements and scaling time efficiency between subjects using the two different inserts. A multivariate analysis of variance revealed no statistically significant differences in the percentage of time dental hygienists were in high, medium, or low risk posture categories while using the rotating ultrasonic insert compared to the standard universal insert. Based on the results of this laboratory study, dental hygienists using a rotating ultrasonic insert experience no ergonomic advantage in terms of wrist postures or timesavings over a standard insert.
Chicomurex superbus
Creators: name: Houart, Roland
name: Héros, Virginie
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Chicomurex
Chicomurex superbus

description: Chicomurex superbus (Sowerby, 1889) Murex superbus Sowerby, 1889: 565, pl. 28, figs 10-11. MATERIAL EXAMINED. — Fiji. BORDAU 1: stn DW 1472, 19°40’S, 178°10’W, 262-266 m, 2 lv, 1 juv. DISTRIBUTION. — Southeast Japan, Taiwan, the Philippines, Queensland (Australia), New Caledonia and Fiji (new record), live in 262-266 m. REMARKS. — Chicomurex superbus belongs to a group of species that also includes C. venustulus (Rehder & Wilson, 1975) and C. problematicus (Lan, 1981). Their shells are up to 85 mm in length and bear 3 more or less spinose, abapical webbed varices, and all have a multispiral, conical, protoconch.
description: Published as part of Houart, Roland & Héros, Virginie, 2008, Muricidae (Mollusca: Gastropoda) from Fiji and Tonga, pp. 437-480 in Mémoires du Muséum national d'Histoire naturelle 196 on page 446
Untitled Item
Creators: name: WANG, ZIQI
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350203
subject: Financial econometrics

description: This research proposal will propose a multi-factor model for both high-frequency and low-frequency Bitcoin prices. This research considers factors from different dimensions, such as former literature (size, market and momentum), famous trading strategies (BTC/ETH, time series momentum), macro environment (monetary policy), fundamentals (mining cost) and market condition (VIX, S&P500). For low-frequency version, this research uses normal OLS regression, while it utilizes jump regression for high-frequency returns. Lastly, we use Fama-Macbeth regression to test the robustness of results.
Potential formulation of the dispersion relation for a uniform, magnetized plasma with stationary ions in terms of a vector phasor
Creators: name: Johnson, Robert W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The derivation of the helicon dispersion relation for a uniform plasma with stationary ions subject to a constant background magnetic field is reexamined in terms of the potential formulation of electrodynamics. Under the same conditions considered by the standard derivation, the nonlinear self-coupling between the perturbed electron flow and the potential it generates is addressed. The plane wave solution for general propagation vector is determined for all frequencies and expressed in terms of a vector phasor. The behavior of the solution as described in vacuum units depends upon the ratio of conductivity to the magnitude of the background field. Only at low conductivity and below the cyclotron frequency can significant propagation occur as determined by the ratio of skin depth to wavelength.
description: 10 pages, 6 figures, major revision, final version, to appear in PoP
Elvira Notari
Creators: name: Tomadjoglou, Kim
Publisher: name: Columbia University
Year: 2013
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: According to her son Eduardo, who described her in interviews as having an authoritarian attitude or piglio, Elvira Notari was called “The General.” She earned the nickname from the strong will and determination she exhibited as head of the Dora Film Company in Naples, Italy (Masi and Franco 49). Director, actress, screenwriter, producer, and distributor, Elvira Notari is now celebrated as Italy’s first and most prolific film director. Over the course of 25 years in which she made 60 feature films and hundreds of shorts and actualities, she led Dora Film to become one of Naples’s leading production houses.
Jane Murfin
Creators: name: Buck, Julie
Publisher: name: Columbia University
Year: 2013
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: As a woman who wrote or cowrote over sixty produced films, a producer who championed strong female roles, and a Hollywood insider with a career spanning over three decades, Jane Murfin may be one of the most prolific but least known writers of the 1920s and ’30s. Jane Murfin was born Jane Macklem in Quincy, Michigan. Her first marriage, in 1907, to lawyer James Murfin, lasted less than five years, but Jane adopted his surname and would use it—excluding the brief period in the late 1910s when she and Jane Cowl used the pseudonym Allan Langdon Martin—throughout her life. Although the 1910 US Census records list her as living as a housewife in Michigan with her lawyer-husband James, according to Murfin family correspondence from 1967, Jane moved shortly after to New York City while her husband remained in Michigan. According to the University of Michigan in Ann Arbor, James eventually became a school regent, after a long career teaching law, and even has a gate on the grounds named after him.
Rheology of Lamellar Liquid Crystals in Two and Three Dimensions: A Simulation Study
Creators: name: Henrich, O.
name: Stratford, K.
name: Marenduzzo, D.
name: Coveney, P. V.
name: Cates, M. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present large scale computer simulations of the nonlinear bulk rheology of lamellar phases (smectic liquid crystals) at moderate to large values of the shear rate (Peclet numbers 10-100), in both two and three dimensions. In two dimensions we find that modest shear rates align the system and stabilise an almost regular lamellar phase, but high shear rates induce the nucleation and proliferation of defects, which in steady state is balanced by the annihilation of defects of opposite sign. The critical shear rate at onset of this second regime is controlled by thermodynamic and kinetic parameters; we offer a scaling analysis that relates the critical shear rate to a critical "capillary number" involving those variables. Within the defect proliferation regime, the defects may be partially annealed by slowly decreasing the applied shear rate; this causes marked memory effects, and history-dependent rheology. Simulations in three dimensions show instead shear-induced ordering even at the highest shear rates studied here. This suggests that the critical shear rate shifts markedly upward on increasing dimensionality. This may in part reflect the reduced constraints on defect motion, allowing them to find and annihilate each other more easily. Residual edge defects in the 3D aligned state mostly point along the flow velocity, an orientation impossible in two dimensions.
description: 18 pages, 12 figures
Mary Murillo
Creators: name: Petersen, Christina
Publisher: name: Columbia University
Year: 2016
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: In March 1918, Moving Picture World heralded British screenwriter Mary Murillo as a “remarkable example” of “the meteoric flights to fame and fortune which have marked the careers of many present day leaders in the motion picture profession” (1525). This was more than just promotional hyperbole, since, in just four years, Murillo had penned over thirty features, including a highly successful adaptation of East Lynne (1916) starring Theda Bara and the original story for Cheating the Public (1918), “which proved a sensation” at its New York debut according to Moving Picture World (1525). Murillo wrote or adapted over fifty films from 1913 to 1934 in the United States, England, and France, including slapstick comedies, melodramas, fairy tale adaptations, and vehicles for female stars such as Bara, Ethel Barrymore, Clara Kimball Young, Olga Petrova, and Norma Talmadge. As a scenarist, her range included several films focused on contemporary issues—gender equality, women’s suffrage, economic progressivism, and labor reform—while others, such as the child-oriented adaptation of Jack and the Beanstalk (1917), seem to have been meant to appeal as pure escapism. In the latter half of her career, Murillo left the United States for England where she joined several ventures, but never equaled her American output.
Sparse Nonparametric Graphical Models
Creators: name: Lafferty, John
name: Liu, Han
name: Wasserman, Larry
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We present some nonparametric methods for graphical modeling. In the discrete case, where the data are binary or drawn from a finite alphabet, Markov random fields are already essentially nonparametric, since the cliques can take only a finite number of values. Continuous data are different. The Gaussian graphical model is the standard parametric model for continuous data, but it makes distributional assumptions that are often unrealistic. We discuss two approaches to building more flexible graphical models. One allows arbitrary graphs and a nonparametric extension of the Gaussian; the other uses kernel density estimation and restricts the graphs to trees and forests. Examples of both methods are presented. We also discuss possible future research directions for nonparametric graphical modeling.
description: Published in at http://dx.doi.org/10.1214/12-STS391 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Chicomurex turschi
Creators: name: Houart, Roland
name: Héros, Virginie
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Chicomurex
Chicomurex turschi

description: Chicomurex turschi (Houart, 1981) Fig. 2B Chicoreus (Chicomurex) turschi Houart, 1981: 186, figs 1-6. MATERIAL EXAMINED. — Fiji. MUSORSTOM 10: stn CP 1364, 18°12’S, 178°35’E, 100-122 m, 1 dd (Fig. 2B). 18°12’S, 178°35’E, 80-86 m, 1 dd. — BORDAU 1: stn DW 1453, Tonga. BORDAU 2: stn CP 582, 18°41’S, 174°03’W, 79-82 m, 16°45’S, 179°59’E, 414-510 m, 1 dd. — SUVA 4: stn DW 04, 2 lv juv. DISTRIBUTION. — Indo-West Pacific: known from Zululand (South Africa), southern Madagascar, the Philippines, Papua New Guinea, New Caledonia, Fiji and Tonga (new records), shells in 86-414 m, live in 79-82 m. REMARKS. — The shell is small, reaching a maximum length of 40 mm, with a paucispiral protoconch. The last whorl bears 3 squamose varices, slightly webbed abapically.
description: Published as part of Houart, Roland & Héros, Virginie, 2008, Muricidae (Mollusca: Gastropoda) from Fiji and Tonga, pp. 437-480 in Mémoires du Muséum national d'Histoire naturelle 196 on pages 446-447
description: {"references": ["HOUART R. 1981. - Chicoreus (Chicomurex) turschi, a new Muricidae from"]}
Unified Formalism for calculating Polarization, Magnetization, and more in a Periodic Insulator
Creators: name: Chen, Kuang-Ting
name: Lee, Patrick A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this paper, we propose a unified formalism, using Green's functions, to integrate out the electrons in an insulator under uniform electromagnetic fields. We derive a perturbative formula for the Green's function in the presence of uniform magnetic or electric fields. Applying the formula, we derive the formula for the polarization, the orbital magnetization, and the orbital magneto-polarizability, without assuming time reversal symmetry. Specifically, we realize that the terms linear in the electric field can only be expressed in terms of the Green's functions in one extra dimension. This observation directly leads to the result that the coefficient of the $θ$ term in any dimensions is given by a Wess-Zumino-Witten-type term, integrated in the extended space, interpolating between the original physical Brillouin zone and a trivial system, with the group element replaced by the Green's function. This generalizes an earlier result for the case of time reversal invariance [see Z. Wang, X.-L. Qi, and S.-C. Zhang, Phys. Rev. Lett. {\bf 105}, 256803 (2010)].
description: 16 pages, 1 figure. The version accepted by PRB
Mae Murray
Creators: name: Willis, Artemis
Publisher: name: Columbia University
Year: 2013
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: Actress Mae Murray’s famous epithet, “The Girl with the Bee-Stung Lips” describes far more than her cupid-bowed mouth; it evokes something unusual, distracting, and for some of her fans perhaps even overwhelming. Also known as “The Gardenia of the Screen,” Murray’s presence can be considered excessive and baroque, pleasurably perfuming and intensifying audience experience beyond whatever movie happens to encircle her. Critics of Murray’s abilities consider her actions (vamping villains at midnight) silly and her presentation (bee-stung lips on an 1840s girl from Utah) incongruous (Slide 2002, 259). But a force of nature is not necessarily natural, and Murray’s fans reveled in her colorful performances.
$G$-Strands
Creators: name: Holm, Darryl D.
name: Ivanov, Rossen I.
name: Percival, James R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A $G$-strand is a map $g(t,{s}):\,\mathbb{R}\times\mathbb{R}\to G$ for a Lie group $G$ that follows from Hamilton's principle for a certain class of $G$-invariant Lagrangians. The SO(3)-strand is the $G$-strand version of the rigid body equation and it may be regarded physically as a continuous spin chain. Here, $SO(3)_K$-strand dynamics for ellipsoidal rotations is derived as an Euler-Poincaré system for a certain class of variations and recast as a Lie-Poisson system for coadjoint flow with the same Hamiltonian structure as for a perfect complex fluid. For a special Hamiltonian, the $SO(3)_K$-strand is mapped into a completely integrable generalization of the classical chiral model for the SO(3)-strand. Analogous results are obtained for the $Sp(2)$-strand. The $Sp(2)$-strand is the $G$-strand version of the $Sp(2)$ Bloch-Iserles ordinary differential equation, whose solutions exhibit dynamical sorting. Numerical solutions show nonlinear interactions of coherent wave-like solutions in both cases. ${\rm Diff}(\mathbb{R})$-strand equations on the diffeomorphism group $G={\rm Diff}(\mathbb{R})$ are also introduced and shown to admit solutions with singular support (e.g., peakons).
description: 35 pages, 5 figures, 3rd version. To appear in J Nonlin Sci
Corporate law and governance
Creators: name: Becht, Marco
name: Bolton, Patrick
name: Röell, Ailsa
Publisher: name: Columbia University
Year: 2007
Subjects: Corporate governance
Consolidation and merger of corporations
Boards of directors
Corporation law

description: This chapter surveys the theoretical and empirical research on the main mechanisms of corporate law and governance, discusses the main legal and regulatory institutions in different countries, and examines the comparative governance literature. Corporate governance is concerned with the reconciliation of conflicts of interest between various corporate claimholders and the resolution of collective action problems among dispersed investors. A fundamental dilemma of corporate governance emerges from this overview: large shareholder intervention needs to be regulated to guarantee better small investor protection; but this may increase managerial discretion and scope for abuse. Alternative methods of limiting abuse have yet to be proven effective.
Lorna Moon
Creators: name: RuVoli, JoAnne
Publisher: name: Columbia University
Year: 2013
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: Although she told several versions of the story, in 1920, Scottish-born Lorna Moon left her job in Minneapolis for Hollywood at the invitation of Cecil B. DeMille after sending him a critique of Male and Female (1920) in which she “razzed him wickedly” for embellishing the original Scottish play (de Mille 1998, 176). She trained with DeMille at Famous Players-Lasky/Paramount Film Corporation for a year then moved on to write three more films for producer Jesse Lasky, two of which were written for Gloria Swanson (de Mille 1998, 178). In 1922, her career was interrupted when she gave birth to screenwriter William de Mille’s son, a baby named Richard whose real parentage was kept secret. Richard was adopted and raised by his uncle Cecil B. DeMille as his own, but in later years all was revealed and the son wrote the biography of Moon, entitled My Secret Mother. Battling tuberculosis for the four years after her son’s birth, Moon wrote short stories and plays from her bed in the sanitarium. In late 1926, she was well enough to return to Metro-Goldwyn-Mayer, where she worked on film scripts for Norma Shearer, Lionel Barrymore, and Lon Chaney. With Frances Marion, she adapted Anna Karenina for a film entitled Love (1927) starring Greta Garbo and John Gilbert. When the tuberculosis again forced her to return to the sanitarium, she completed Dark Star, a novel that reached the best-seller list before her death in 1930.
Dorothea Mitchell
Creators: name: Beaulieu, Michel S.
Publisher: name: Columbia University
Year: 2016
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: In the spring of 1929, the Port Arthur Amateur Cinema Society made Canadian history. To a crowded house in the city of Port Arthur, in Ontario’s largest theatre, their first feature-length film, A Race for Ties (1929), premiered. Not only was it one of the few feature-length films made in Canada at the time, but it holds the distinction of being the first amateur feature-length film in Canada, and the first of three that involved the talents of Dorothea Mitchell, a British-born, India-raised women who is best known as Ontario’s first single woman to be granted a homestead in that province’s history.
Spatially, Temporally and Polarization-Resolved Photoluminescence Exploration of Excitons in Crystalline Phthalocyanine Thin Films
Creators: name: Rawat, Naveen
name: Pan, Zhenwen
name: Manning, Lane W.
name: Lamarche, Cody J.
name: Cour, Ishviene
name: Headrick, Randall L.
name: Waterman, Rory
name: Woll, Arthur R.
name: Furis, Madalina I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The lack of long range order in organic semiconductor thin films prevents the unveiling of the complete nature of excitons in optical experiments, because the diffraction limited beam diameters in the bandgap region far exceed typical crystalline grain sizes. Here we present spatially-, temporally- and polarization-resolved dual photoluminescence/linear dichroism microscopy experiments that investigate exciton states within a single crystalline grain in solution-processed phthalocyanine thin films. These experiments reveal the existence of a delocalized singlet exciton, polarized along the high mobility axis in this quasi-1D electronic system. The strong delocalized π orbitals overlap controlled by the molecular stacking along the high mobility axis is responsible for breaking the radiative recombination selection rules. Using our linear dichroism scanning microscopy setup we further established a rotation of molecules (i.e. a structural phase transition) that occurs above 100 K prevents the observation of this exciton at room temperature.
description: submitted to Journal of Chem Phys letters
Nonmedical Prescription Opioid Use in Childhood and Early Adolescence Predicts Transitions to Heroin Use in Young Adulthood: A National Study
Creators: name: Cerdá, Magdalena
name: Santaella Tenorio, Julian
name: Marshall, Brandon D. L.
name: Kim, June H.
name: Martins, Silvia S.
Publisher: name: Columbia University
Year: 2015
Subjects: Epidemiology
Medication abuse
Opioids
Opioid abuse
Drug abuse
Drug abuse--Epidemiology
Heroin
Heroin abuse
Youth--Drug use

description: Objectives: To examine the relationship between nonmedical use of prescription opioids and heroin initiation from childhood to young adulthood, and to test whether certain ages, racial/ethnic, and income groups were at higher risk for this transition. Study design: Among a nationally representative sample of US adolescents assessed in the 2004-2011 National Surveys on Drug Use and Health cross-sectional surveys (n = 223 534 respondents aged 12-21 years), discrete-time hazard models were used to estimate the age-specific hazards of heroin initiation associated with prior history of nonmedical use of prescription opioids. Interactions were estimated between prior history of nonmedical use of prescription opioids and age of nonmedical use of prescription opioid initiation, race/ethnicity, and income. Results: A prior history of nonmedical use of prescription opioids was strongly associated with heroin initiation (hazard ratio 13.12, 95% CI 10.73, 16.04). Those initiating nonmedical use of prescription opioids at ages 10-12 years had the highest risk of transitioning to heroin use; the association did not vary by race/ethnicity or income group. Conclusions: Prior use of nonmedical use of prescription opioids is a strong predictor of heroin use onset in adolescence and young adulthood, regardless of the user's race/ethnicity or income group. Primary prevention of nonmedical use of prescription opioids in late childhood may prevent the onset of more severe types of drug use such as heroin at later ages. Moreover, because the peak period of heroin initiation occurs at ages 17-18 years, secondary efforts to prevent heroin use may be most effective if they focus on young adolescents who already initiated nonmedical use of prescription opioids.
Naquetia cumingii
Creators: name: Houart, Roland
name: Héros, Virginie
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Naquetia
Naquetia cumingii

description: Naquetia cumingii (A. Adams, 1853) Murex cumingii A. Adams, 1853: 270. Other references: Pterynotus (Naquetia) triqueter - Cernohorsky 1967: 124 (in part), pl. 15, fig. 15, text fig. 6 (non Murex triqueter Born, 1778). Naquetia cumingii - Houart 1992: 128. MATERIAL EXAMINED. — Fiji. SUVA 4: stn DW 23, 18°28’S, 177°59’E, 31-32 m, 1 dd. — MUSORSTOM 10: stn DW 1333, 16°50’S, 178°13’E, 200-215 m, 1 dd. DISTRIBUTION. — Widely distributed in the Indo-West Pacific. REMARKS. — Naquetia cumingii was previously reported from Fiji by Cernohorsky (1967: 124) as Pterynotus triqueter. Finet & Houart (1989) presented a historical review of this species. The shell bears 3 rounded, frondose varices on its last whorl. The apertural varix is strongly webbed, mostly on its abapical part, extending to the siphonal canal. The protoconch whorls are shouldered.
description: Published as part of Houart, Roland & Héros, Virginie, 2008, Muricidae (Mollusca: Gastropoda) from Fiji and Tonga, pp. 437-480 in Mémoires du Muséum national d'Histoire naturelle 196 on page 447
description: {"references": ["ADAMS A. 1853. - Descriptions of several new species of Murex, Rissoina, HOUART R. 1987 a. - Description of four new species of Muricidae (Mollusca: Planaxis, and Eulima from the Cumingian collection. Proceedings of the Gastropoda) from New Caledonia. Venus 46 (4): 202 - 210.", "CERNOHORSKY W. O. 1967. - The Muricidae of Fiji (Mollusca: Gastropoda).", "HOUART R. 1992. - The genus Chicoreus and related genera (Gastropoda: D'ATTILIO A. 1982. - Convergence in typhine form. The Festivus 14 (8):", "HOUART R. 1989. - Description of a new species of Pterynotus (Mollusca: BOUCHET P. (eds), Tropical Deep-Sea Benthos 25. Memoires du Museum"]}
Dynamic modeling, parameter identification, payload estimation, and non-contact arm geometry sensing of the mining cable shovel
Creators: name: Rasuli, Abdol Rasul
Publisher: name: University of British Columbia
Year: 2012

description: This thesis presents the application of the least squares estimation technique in identification of the cable shovel parameters and monitoring its payload. Both detailed and simplified dynamic models of the cable shovel are derived by modeling the DC motors and analyzing such nonlinear effects as inertia, Coriolis, centripetal, and friction. Mathematical methods, including the interactive Newton-Euler technique, have been used to obtain the kinematic and dynamic equations of the shovel, and establish the relationship between the shovel parameters and the payload inside the bucket. The cable shovel bucket is also referred to as “dipper”. An on-line parameter identification scheme was developed and experimentally verified in order to estimate the cable shovel parameters. A data acquisition system was installed on a P&H2100 cable shovel in the Sarcheshmeh Copper mine, located in Iran, where it logged the cable shovel data for several loading cycles. The payload was dynamically estimated using the simplified dynamic cable-shovel model developed in this thesis. The accuracy and repeatability of the algorithm has been verified based upon the cable-shovel data logged during its normal operation at the mine. In the course of this thesis project, I also devised a novel approach for non-contact sensing of the dynamic arm-geometry of the cable-shovel. A prototype sensor apparatus was designed and assembled that measures the dipper handle angle, the swing angle, and the dipper handle length. Different sensors such as gyroscopes, magnetometers, accelerometers, and a laser sensor are integrated into Arm Geometry Sensor (AGS) apparatus. The AGS apparatus is installed on the saddle block and measures all cable shovel joint variables without having direct physical contact with the links or joints. The AGS apparatus was employed during field trials on the on P&H2100 cable shovel and verified to effectively sense the shovel joint variables with acceptable accuracy.
The Thermal Properties of Solar Flares Over Three Solar Cycles Using GOES X-ray Observations
Creators: name: Ryan, Daniel F.
name: Milligan, Ryan O.
name: Gallagher, Peter T.
name: Dennis, Brian R.
name: Tolbert, A. Kim
name: Schwartz, Richard A.
name: Young, C. Alex
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar flare X-ray emission results from rapidly increasing temperatures and emission measures in flaring active region loops. To date, observations from the X-Ray Sensor (XRS) onboard the Geostationary Operational Environmental Satellite (GOES) have been used to derive these properties, but have been limited by a number of factors, including the lack of a consistent background subtraction method capable of being automatically applied to large numbers of flares. In this paper, we describe an automated temperature and emission measure-based background subtraction method (TEBBS), which builds on the methods of Bornmann (1990). Our algorithm ensures that the derived temperature is always greater than the instrumental limit and the pre-flare background temperature, and that the temperature and emission measure are increasing during the flare rise phase. Additionally, TEBBS utilizes the improved estimates of GOES temperatures and emission measures from White et al. (2005). TEBBS was successfully applied to over 50,000 solar flares occurring over nearly three solar cycles (1980-2007), and used to create an extensive catalog of the solar flare thermal properties. We confirm that the peak emission measure and total radiative losses scale with background subtracted GOES X-ray flux as power-laws, while the peak temperature scales logarithmically. As expected, the peak emission measure shows an increasing trend with peak temperature, although the total radiative losses do not. While these results are comparable to previous studies, we find that flares of a given GOES class have lower peak temperatures and higher peak emission measures than previously reported. The resulting TEBBS database of thermal flare plasma properties is publicly available on Solar Monitor (www.solarmonitor.org/TEBBS/) and will be available on Heliophysics Integrated Observatory (www.helio-vo.eu).
Mary Lawton Metcalfe
Creators: name: Ellis, Patrick
Publisher: name: Columbia University
Year: 2017
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: Mary Lawton Metcalfe began writing for The Moving Picture News, a New York City-based trade journal, in 1911. This was, according to available materials, her first foray into film writing, although she had served as an advice columnist in a regional publication—“the Dorothy Dix of the Staten Island World” (MacDonald 1911, 7). At first glance, Metcalfe’s essays appear to be atypically strident advocacy pieces for the moral reform of cinema, and for the use of moving pictures in education: “This is a bomb I am going to throw right into educational circles,” she threatened—the bomb of moving pictures (“A Practical Plan” 6). In a May 1912 article, she proposed that every university, public library, Sunday school, and church have a motion picture projector, and this at a time when such proposals were unorthodox (28). Reading her essays and non-film-related writing more closely, it becomes clear that Metcalfe’s advocacy was premised upon an interlocking, sui generis theory of film. Cumulatively, she called for an entirely new, curative cinema, one that would encourage moviegoers to develop the right thoughts by which they could be physically improved: she called for a cinema that doubled as a medicine.
Cooling in the single-photon strong-coupling regime of cavity optomechanics
Creators: name: Nunnenkamp, A.
name: Borkje, K.
name: Girvin, S. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we discuss how red-sideband cooling is modified in the single-photon strong-coupling regime of cavity optomechanics where the radiation pressure of a single photon displaces the mechanical oscillator by more than its zero-point uncertainty. Using Fermi's Golden rule we calculate the transition rates induced by the optical drive without linearizing the optomechanical interaction. In the resolved-sideband limit we find multiple-phonon cooling resonances for strong single-photon coupling that lead to non-thermal steady states including the possibility of phonon anti-bunching. Our study generalizes the standard linear cooling theory.
description: 4 pages, 3 figures
Rossby wave instability in locally isothermal and polytropic disks: three-dimensional linear calculations
Creators: name: Lin, Min-Kai
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Numerical calculations of the linear Rossby wave instability (RWI) in global three-dimensional (3D) disks are presented. The linearized fluid equations are solved for vertically stratified, radially structured disks with either a locally isothermal or polytropic equation of state, by decomposing the vertical dependence of the perturbed hydrodynamic quantities into Hermite and Gegenbauer polynomials, respectively. It is confirmed that the RWI operates in 3D. For perturbations with vertical dependence assumed above, there is little difference in growth rates between 3D and two-dimensional (2D) calculations. Comparison between 2D and 3D solutions of this type suggest the RWI is predominantly a 2D instability and that three-dimensional effects, such as vertical motion, to be interpreted as a perturbative consequence of the dominant 2D flow. The vertical flow around co-rotation, where vortex-formation is expected, is examined. In locally isothermal disks the expected vortex center remains in approximate vertical hydrostatic equilibrium. For polytropic disks the vortex center has positive vertical velocity, whose magnitude increases with decreasing polytropic index $n$.
description: 17 pages, 21 figures, Accepted by ApJ
Obesity effects on pedestrian lower extremity injuries in vehicle-to-pedestrian impacts: A numerical investigation using human body models
Creators: name: Tang, Jisi
name: Zhou, Qing
name: Nie, Bingbing
name: Hu, Jingwen
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: The objectives of this study were to develop a method for modeling obese pedestrians and to investigate effects of obesity on pedestrian impact responses and injury outcomes. The GHBMC (Global Human Body Model Consortium) 50th percentile male pedestrian model was morphed into geometries with 4 body mass index (BMI) levels (25/30/35/40 kg/m2) predicted by statistical body shape models. Each of the 4 morphed models was further morphed from a standing posture into 2 other gaits (toe-off and mid-swing), which resulted in a total of 12 (4 BMIs × 3 postures) models. Each model was used to simulate vehicle-to-pedestrian impact under 2 impact velocities. Pedestrian kinematics and injury measures were analyzed focusing on lower extremities. Statistical analyses were performed to examine significance of obesity on concerned injury measures. Peak values of the bending moment at tibia, force at medial collateral ligament (MCL), bending angle at knee joint, and contact force between vehicle and pedestrian increased significantly (P < .05) with increased BMI. By analyzing kinematics of the lower extremity, the overall vehicle-to-pedestrian impact was divided into 2 phases: “initial contact” and “tibia rebound.” For obese pedestrians, the added mass caused a higher tibia bending moment in the initial contact phase, and the greater moment of inertia led to greater bending angle and MCL force in the tibia rebound phase. Statistical analyses also revealed that pre-impact posture and impact velocity had significant effects on all injury measures. Obesity could significantly increase the risk of pedestrian lower extremity injuries due to the inertial effect from the added mass. Pre-impact posture and impact velocity also significantly affect pedestrian injury measures. Future vehicle designs for pedestrian protection should consider populations with obesity. This study demonstrated the feasibility of using parametric human modeling to account for population diversity in injury prediction.
Pterynotus marshalli Houart 1989
Creators: name: Houart, Roland
name: Héros, Virginie
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Muricidae
Pterynotus
Pterynotus marshalli

description: Pterynotus marshalli Houart, 1989 Fig. 2D Pterynotus marshalli Houart, 1989: 273, figs 1-1a, 7-9. MATERIAL EXAMINED. — Tonga. BORDAU 2: stn DW 1521, 21°19’S, 175°01’W, 225-233 m, 1 dd (damaged); stn DW 1535, 21°43’S, 175°18’W, 268 m, 1 dd (damaged) (Fig. 2D). DISTRIBUTION. — Off Norfolk Island (holotype), live in 225-308 m, and now Tonga (new record), shells in 233- 268 m. REMARKS. — The shells from Tonga are damaged and collected dead but are still identifiable. They have more slender whorls and a higher spire than the holotype, but are otherwise similar to it. The last teleoconch whorl bears 3 wide, thin and fragile, wing-like varices. It resembles Pterynotus bednalli (Brazier, 1878) but differs in the ornamentation of the first teleoconch whorls. Pterynotus bednalli bears 6 or 7 thin axial lamellae on the first and second whorls, and 3 lamellae from the third whorl onwards. Pterynotus marshalli bears 3 thin varices and a small lamellate ridge on its first whorl, and from its second whorl onwards has 3 thin varices and a small axial ridge. Pterynotus bednalli also has more numerous secondary and tertiary spiral cords on its last teleoconch whorl.
description: Published as part of Houart, Roland & Héros, Virginie, 2008, Muricidae (Mollusca: Gastropoda) from Fiji and Tonga, pp. 437-480 in Mémoires du Muséum national d'Histoire naturelle 196 on pages 447-448
description: {"references": ["HOUART R. 1989. - Description of a new species of Pterynotus (Mollusca: BOUCHET P. (eds), Tropical Deep-Sea Benthos 25. Memoires du Museum"]}
Retrieval of multiple spin waves from a weakly excited, metastable atomic ensemble
Creators: name: Bariani, F.
name: Kennedy, T. A. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The emission of light from a multiply excited atomic ensemble is examined and it is shown how symmetric (spin-wave) and non-symmetric states of excitation radiate into spatially separate field modes. This observation has potential application to single photon generation and spin wave entanglement, since in the presence of atomic interactions it can result in isolated single photon emission into a phase-matched field mode.
description: 13 pages, 3 figures
BPS Saturated String Amplitudes: K3 Elliptic Genus and Igusa Cusp Form
Creators: name: Hohenegger, S.
name: Stieberger, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study BPS saturated one-loop amplitudes in type II string theory compactified on K3 x T^2. The classes of amplitudes we consider are only sensitive to the very basic topological data of the internal K3 manifold. As a consequence, the integrands of the former are related to the elliptic genus of K3, which can be decomposed into representations of the internal N=4 superconformal algebra. Depending on the precise choice of external states these amplitudes capture either only the contribution of the short multiplets or the full series including intermediate multiplets. In the latter case we can define a generating functional for the whole class, which we show is given by the weight ten Igusa cusp form chi_{10} of Sp(4,Z). We speculate on possible algebraic implications of our result on the BPS states of the N=4 type II compactification.
description: 45 pages, LaTeX; v2: two references added, final version to appear in NPB