cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spontaneous Dissociation of Co2(CO)8 and Autocatalytic growth of Co on SiO2 : A Combined Experimental and Theoretical Investigation
Creators: name: Muthukumar, Kaliappan
name: Jeschke, Harald O.
name: Valentí, Roser
name: Begun, Evgeniya
name: Schwenk, Johannes
name: Porrati, Fabrizio
name: Huth, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present experimental results and theoretical simulations of the adsorption behavior of the metal-organic precursor Co2(CO)8 on SiO2 surfaces after application of two different pre-treatment steps, namely by air plasma cleaning or a focused electron beam pre-irradiation. We observe a spontaneous dissociation of the precursor molecules as well as auto-deposition of cobalt on the pre-treated SiO2 surfaces. We also find that the differences in metal content and relative stability of these deposits depend on the pre-treatment conditions of the substrate. Transport measurements of these deposits are also presented. We are led to assume that the degree of passivation of the SiO2 surface by hydroxyl groups is an important controlling factor in the dissociation process. Our calculations of various slab settings using dispersion corrected density functional theory support this assumption. We observe physisorption of the precursor molecule on a fully hydroxylated SiO2 surface (untreated surface) and chemisorption on a partially hydroxylated SiO2 surface (pre-treated surface) with a spontaneous dissociation of the precursor molecule. In view of these calculations, we discuss the origin of this dissociation and the subsequent autocatalysis.
description: 22 pages, 8 Figures, In Press Article, Beilstein Journal of Nanotechnology, 2012
Description static Symmetrical Outcome-Revaluation Task
Creators: name: Brinkhof, L.P.
name: Van de vijver, Irene
name: de Wit, S.
Publisher: name: University of Amsterdam / Amsterdam University of Applied Sciences
Year: 2023
Subjects: subject: Psychology
subject: FOS: Psychology

description: A detailed description of the static Symmetrical Outcome-Revaluation Task, as cited in:
 Brinkhof, L. P., Ridderinkhof, K. R., van de Vijver, I., Murre, J. M., Krugers, H. J., & de Wit, S. (2022). Psychological coping and behavioral adjustment among older adults in times of COVID-19: Exploring the protective role of working memory and habit propensity. Journal of adult development, 29(3), 240-254.
Alcohol consumption and breast cancer-specific and all-cause mortality in women diagnosed with breast cancer at the New York site of the Breast Cancer Family Registry
Creators: name: Zeinomar, Nur
name: Thai, Ashley
name: Cloud, Ann J.
name: McDonald, Jasmine A.
name: Liao, Yuyan
name: Terry, Mary Beth
Publisher: name: Columbia University
Year: 2017
Subjects: Breast--Cancer--Mortality
Breast--Cancer--Patients
Drinking of alcoholic beverages
Breast--Cancer--Epidemiology
Epidemiology

description: Purpose
Alcohol consumption is an established and important risk factor for breast cancer incidence in the general population. However, the relationship between alcohol and mortality among women with breast cancer is less clear. This study examines the effect of alcohol consumption on mortality in women affected with breast cancer at baseline from a high-risk family breast and ovarian cancer registry.

Methods
We studied 1116 women affected with breast cancer at baseline from the Metropolitan New York Registry. The examined reported alcohol consumption (total of beer, wine, liquor) was defined as the average number of drinks per week reported from age 12 to age at baseline. We assessed vital status of each participant using participant or family reported data and we used the National Death Index to supplement deaths reported through family updates. We used Cox proportional hazards models to estimate the association between alcohol intake and overall mortality (HRO), breast cancer-specific mortality (HRBC), and non-breast cancer mortality (HRNBC), adjusted for confounders.

Results
After a mean follow-up of 9.1 years, we observed 211 total deaths and 58 breast cancer deaths. Compared to non-drinkers, we found that both low and moderate to heavy levels of alcohol intake were not associated with greater overall mortality (≤3 drinks/week: HRO: 0.66, 95% CI: 0.38–1.14); > 3 drinks/week: HRO: 1.16, 95% CI: 0.85–1.58), breast cancer–specific mortality (≤ 3 drinks/week: HRBC:0.62, 95% CI: 0.19–2.03; >3 drinks/week: HR BC: 0.96, 95% CI: 0.49–1.89), or non-breast cancer-specific mortality (≤3 drinks/week: HR NBC: 0.73, 95% CI: 0.32–1.6; >3 drinks/week: HRNBC: 1.18, 95% CI: 0.75–1.86).

Conclusions
Alcohol intake reported from age 12 to age at baseline was not associated with overall or breast cancer-specific mortality in this cohort of affected women with a family history of breast cancer.
Subsonic phase transition waves in bistable lattice models with small spinodal region
Creators: name: Herrmann, Michael
name: Matthies, Karsten
name: Schwetlick, Hartmut
name: Zimmer, Johannes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37K60, 47H10, 74J30, 82C26

description: Phase transitions waves in atomic chains with double-well potential play a fundamental role in materials science, but very little is known about their mathematical properties. In particular, the only available results about waves with large amplitudes concern chains with piecewise-quadratic pair potential. In this paper we consider perturbations of a bi-quadratic potential and prove that the corresponding three-parameter family of waves persists as long as the perturbation is small and localised with respect to the strain variable. As a standard Lyapunov-Schmidt reduction cannot be used due to the presence of an essential spectrum, we characterise the perturbation of the wave as a fixed point of a nonlinear and nonlocal operator and show that this operator is contractive in a small ball in a suitable function space. Moreover, we derive a uniqueness result for phase transition waves with certain properties and discuss the kinetic relation.
description: revised version with extended introduction, improved perturbation method, and novel uniqueness result; 20 pages, 5 figures
EFFECTIVENESS OF TECHNIQUES AND TECHNOLOGIES USED IN AGRICULTURE IN SOIL TREATMENT.
Creators: name: Otaboyev, Muhammad
Publisher: name: Zenodo
Year: 2025

description: When preparing land for planting, bzss-1,0, BZTS-1,0 and BZTX-1,0 gear borons are used, RVN-8,5 softener-rectifier, BDT-3,0 and TDB-5 disc borons, chku-4A Chizel-cultivator,MV6, 0 mola-rectifier, VP-8 took planting rectifier, laser mola-rectifier and agricultural machines that prepare a number of other land for planting.
Spotlight on early childhood education. A newspaper coverage analysis of universal preschool debate in Argentina
Creators: name: Snaider, Carolina
Publisher: name: Columbia University
Year: 2018
Subjects: Early childhood education
School management and organization
Education, Preschool
Education and state

description: Throughout the past decade, the Argentinean government has lowered the starting age of compulsory education and early childhood education enrollment has been growing steadily. However, ECE services have evolved in a fragmented manner, leading to an unequal and inequitable scenario: while private education supports the largest part of the growth, children from low-income families are less likely to attend preschool and more likely to receive low-quality service. Through a newspaper coverage analysis, I explore how these problems are addressed in the public debate on universal preschool. Results show that the voices of policy-makers and “experts” are prominent while teachers’ and parents’ views are ignored; I found a widespread consensus for universal preschool and a scarcity of arguments against. I suggest the need to draw on research findings in ECE more critically and posit that the need to ensure high quality preschool for all children should be central in the debate.
HT-eQTL: integrative expression quantitative trait loci analysis in a large number of human tissues
Creators: name: Li, Gen
name: Jima, Dereje
name: Wright, Fred A.
name: Nobel, Andrew B.
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Gene expression
subject: Tissues

description: Background
                Expression quantitative trait loci (eQTL) analysis identifies genetic markers associated with the expression of a gene. Most existing eQTL analyses and methods investigate association in a single, readily available tissue, such as blood. Joint analysis of eQTL in multiple tissues has the potential to improve, and expand the scope of, single-tissue analyses. Large-scale collaborative efforts such as the Genotype-Tissue Expression (GTEx) program are currently generating high quality data in a large number of tissues. However, computational constraints limit genome-wide multi-tissue eQTL analysis.

                Results
                We develop an integrative method under a hierarchical Bayesian framework for eQTL analysis in a large number of tissues. The model fitting procedure is highly scalable, and the computing time is a polynomial function of the number of tissues. Multi-tissue eQTLs are identified through a local false discovery rate approach, which rigorously controls the false discovery rate. Using simulation and GTEx real data studies, we show that the proposed method has superior performance to existing methods in terms of computing time and the power of eQTL discovery.

                Conclusions
                We provide a scalable method for eQTL analysis in a large number of tissues. The method enables the identification of eQTL with different configurations and facilitates the characterization of tissue specificity.
Time- and frequency-domain polariton interference
Creators: name: Campbell, G. T.
name: Hosseini, M.
name: Sparkes, B. M.
name: Lam, P. K.
name: Buchler, B. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present experimental observations of interference between an atomic spin coherence and an optical field in a Λ-type gradient echo memory. The interference is mediated by a strong classical field that couples a weak probe field to the atomic coherence through a resonant Raman transition. Interference can be observed between a prepared spin coherence and another propagating optical field, or between multiple Λ transitions driving a single spin coherence. In principle, the interference in each scheme can yield a near unity visibility.
description: 11 pages, 5 figures
Nuestra América : la innovación poética como estrategia política
Creators: name: Bautista Ruiz, René
Publisher: name: University of British Columbia
Year: 2012

description: El propósito de la presente investigación es demostrar que la naturaleza del texto “Nuestra América” de José Martí es primordialmente poética. Mediante el análisis comparativo con dos textos canónicos de Simón Bolívar y Andrés Bello se analizan las diferencias respecto al uso del lenguaje. Así se intenta ilustrar que la prosa martiana a diferencia de la tradición ensayística hispanoamericana del siglo XIX evoluciona hacia el campo de la poesía, creando una síntesis entre prosa y lírica. Finalmente mediante el análisis minucioso de las figuras retóricas de Martí se establecen los recursos innovadores del autor en correspondencia con procesos histórico-sociales.
Influence of Maturity and Drying Temperature on Antioxidant Activity and Chemical Compositions in Ginger
Creators: name: Niramon Utama-Ang
Publisher: name: King Mongkut's Institute of Technology Ladkrabang
Year: 2019
Subjects: Zingiber officinale, ginger, maturity, antioxidant, volatile compounds, drying

description: Current Applied Science and Technology, 19, 1, 28-42
CPV and FCNC in top quark sector
Creators: name: Mohanty, Gagan
Publisher: name: Zenodo
Year: 2019

description: The top quark, the heaviest known elementary particle, is unique in many respects. For instance, in addition to having the strongest Yukawa coupling to the Higgs boson, it decays before hadronizing unlike all other quarks. This allows us to study its properties directly. Two such properties are the charge-parity (CP) violation, intimately connected to matter-antimatter asymmetry, and flavour changing neutral current (FCNC), which is forbidden at tree level in the standard model but can occur at higher orders. We discuss results on recent studies performed by the ATLAS and CMS experiments at the LHC on CP violation and FCNC transitions related to the top quark.
The Role of Litter Quality Feedbacks in Terrestrial Nitrogen and Phosphorus Cycling
Creators: name: Knops, Johannes M. H.
name: Wedin, David A.
name: Naeem, Shahid
Publisher: name: Columbia University
Year: 2010
Subjects: Soil ecology
Plant litter
Humus
Nitrogen cycle
Phosphorus cycle (Biogeochemistry)
Biodegradation

description: Many studies in ecosystem ecology argue for strong control of litter quality over nitrogen (N) cycling. We developed a model for temperate grasslands to test the importance of litter quality in decomposition for N and phosphorus (P) cycling based on the following premises. First, terrestrial N and P cycling differ fundamentally because N is a structural component of the soil organic matter (SOM), whereas P is not. Secondly, SOM has a much lower C:N ratio than litter inputs. Thirdly, litter decomposition follows an exponential decay with 20% of the original litter mass turning into SOM. Fourth, litter N concentration shows an exponential increase during decomposition, whereas P does not change and is released proportionally to the litter mass. Based on these premises we constructed a model which shows that 0.75% N is a critical initial litter concentration at which concentration all N is immobilized and no N is released from the litter. Thus at 0.75% N of the litter all net N mineralization is through SOM decomposition and not through litter decomposition. Phosphorus, in contrast, is primarily released in the early stages of litter decomposition. Empirical tests of these model predictions support the applicability of the model to temperate grassland ecosystems. This model predicts that N mineralization from SOM is much more important than mineralization from litter and that plant litter quality differences alone cannot explain ecosystem N cycling patterns. Phosphorus, in contrast, does cycle largely through litter decomposition, and plant litter quality differences are the dominant factor in determining ecosystem P cycling feedbacks.
Description static Symmetrical Outcome-Revaluation Task
Creators: name: Brinkhof, L.P.
name: Van de vijver, Irene
name: de Wit, S.
Publisher: name: University of Amsterdam / Amsterdam University of Applied Sciences
Year: 2021
Subjects: subject: Psychology
subject: FOS: Psychology

description: A detailed description of the static Symmetrical Outcome-Revaluation Task, used in 'Mental Resilience among Older Adults inTimes of COVID-19: The Role of Working Memory and Habit Propensity' (2021).
title: Searching Painted Word - Textverklanglichung in den Wereken von Genesis (1967-1974)
Creators: name: Hintz, Laurenz
Publisher: name: Hochschule Osnabrück
Year: 2025
Subjects: subject: 780 Musik

description: Die Zielsetzung der vorliegenden Bachelorarbeit ist es, den Songkatalog der englischen Rockgruppe Genesis unter dem Gesichtspunkt des musikalischen Stilmittels der Textverklanglichung zu untersuchen, um anhand dessen zu verstehen, ob und wie sich die Kompositionstechniken der Band im Laufe der ersten sieben Jahre der Bandgeschichte (1967-1974) verändert haben. Hierbei ist grundlegend von der Annahme auszugehen, dass Genesis je nach gewünschter Klangästhetik, lyrischem Inhalt und personellen Änderungen des jeweiligen Albums auf eine Vielzahl unterschiedlicher Ausführungen jenes Stilmittels zurückgreifen und dieses mehr oder minder prominent verwenden konnten. Zur Zielfindung wurden alle Songs dieser Periode von Genesis auf Textverklanglichung untersucht und in verschiedene Untergruppen kategorisiert. Anschließend wurden die Ergebnisse albenweise verglichen, um zu erkennen, ob sich ein fortlaufendes Muster in der relativen Verwendung des Stilmittels innerhalb der jeweiligen Alben findet.
Am Ende der Arbeit steht die Erkenntnis, dass sich die Herangehensweise der Band an besagtes Stilmittel in jenen Jahren tatsächlich merklich verändert hat, was eher auf die verschiedenen Bandkonfigurationen, sowie sich unterscheidenden Kompositionsmethoden als auf eine bewusst gewählte Dichte des Stilmittels zurückzuführen ist.
Die Arbeit könnte sowohl für Studierende im Bereich Musikerziehung als auch für freischaffende Musizierende, sowie Fans der Band interessant sein.
description: The aim of this bachelor's thesis is to examine the song catalog of the English rock group Genesis from the perspective of the musical stylistic device of word painting in order to understand whether and how the band's composition techniques have changed over the course of the first seven years of the band’s existence (1967-1974). The basic assumption here is that, depending on the desired sound aesthetic, lyrical content and personnel changes of the respective album, Genesis were able to draw on a variety of different versions of this stylistic device and use it more or less prominently. To find the goal, all of this era’s Genesis songs were examined for examples of word painting and categorized into different subgroups. The results were then compared album by album to see whether there was a consistent pattern in the relative use of the stylistic device within the respective albums.
The finding of this work is that Genesis’ approach to said stylistic device really did change noticeably, due to changes in the band’s configuration, as well as differing composition techniques, more than deliberate choices on a certain number and density of the stylistic device.
The work could be interesting for students in the field of music education as well as for freelance musicians and fans of the band.
Phase separation in a lattice model of a superconductor with pair hopping
Creators: name: Kapcia, Konrad
name: Robaszkiewicz, Stanisław
name: Micnas, Roman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have studied the extended Hubbard model with pair hopping in the atomic limit for arbitrary electron density and chemical potential. The Hamiltonian considered consists of (i) the effective on-site interaction U and (ii) the intersite charge exchange interactions I, determining the hopping of electron pairs between nearest-neighbour sites. The model can be treated as a simple effective model of a superconductor with very short coherence length in which electrons are localized and only electron pairs have possibility of transferring. The phase diagrams and thermodynamic properties of this model have been determined within the variational approach, which treats the on-site interaction term exactly and the intersite interactions within the mean-field approximation. We have also obtained rigorous results for a linear chain (d=1) in the ground state. Moreover, at T=0 some results derived within the random phase approximation (and the spin-wave approximation) for d=2 and d=3 lattices and within the low density expansions for d=3 lattices are presented. Our investigation of the general case (as a function of the electron concentration and as a function of the chemical potential) shows that, depending on the values of interaction parameters, the system can exhibit not only the homogeneous phases: superconducting (SS) and nonordered (NO), but also the phase separated states (PS: SS-NO). The system considered exhibits interesting multicritical behaviour including tricritical points.
description: 15 pages, 9 figures; pdf-ReVTeX, final version, corrected typos; submitted to Journal of Physics: Condensed Matter
Verifying the accuracy of the TITAN Penning-trap mass spectrometer
Creators: name: Brodeur, M.
name: Ryjkov, V. L.
name: Brunner, T.
name: Ettenauer, S.
name: Gallant, A. T.
name: Simon, V. V.
name: Smith, M. J.
name: Lapierre, A.
name: Ringle, R.
name: Delheij, P.
name: Good, M.
name: Lunney, D.
name: Dilling, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: TITAN (TRIUMF's Ion Traps for Atomic and Nuclear science) is an online facility designed to carry out high-precision mass measurements on singly and highly charged radioactive ions. The TITAN Penning trap has been built and optimized in order to perform such measurements with an accuracy in the sub ppb-range. A detailed characterization of the TITAN Penning trap is presented and a new compensation method is derived and demonstrated, verifying the performance in the range of sub-ppb.
description: 33 pages, 16 figures
VIRTUAL REALITY AS AN EDUCATIONAL TOOL IN THE TREATMENT OF CHRONIC PAIN: PROTOCOL FOR A FEASIBILITY STUDY
Creators: name: O'Donoghue, Mairead
name: Ó Riain, Eoghan
name: Deegan, Orla
name: Martin, Denis
name: Smart, Keith
name: McMahon, SINEAD
name: Blake, Catherine
name: Doody, Catherine
name: Moreno Ligero, Marta
name: O'Sullivan, Declan J.
name: Hanrahan, Ciara
name: Murphy, David
name: McVeigh, Joseph
name: Fullen, Brona
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Virtual Reality
subject: Virtual reality
subject: Virtual Reality Exposure Therapy
subject: Virtual Reality Exposure Therapy/education
subject: Chronic Pain
subject: Pain Education
subject: Feasibility Studies
subject: Protocol

description: IntroductionChronic pain significantly impacts quality of life and requires comprehensive management strategies.Traditional pain education programs are beneficial but often require significant and prolonged patientengagement. Virtual reality (VR) offers a novel approach by creating immersive environments that mayenhance the effectiveness of pain education. This protocol outlines a feasibility study to investigate theuse of a Virtual Reality Pain Education Program (VRPEP) for people living with chronic pain (PwCP).

Aim of the investigationThe primary aim will be to evaluate the feasibility of delivering a VRPEP for PwCP. The secondary aimwill be to explore the pre-to-post-test changes in outcome measures relating to pain self-efficacy and fearavoidance behaviours as proof of concept for a future larger scale investigation.

MethodsThis study will be conducted as a single-arm feasibility study using a pre-test post-test design. 50 PwCPwill engage in a 6-week VRPEP, focusing on the neurophysiology of pain, pain modulation techniques,cognitive-behavioural strategies and guided virtual exercises.

ResultsPrimary outcome measures will include the feasibility, acceptability and safety of the VRPEP, includingrecruitment, retention, intervention adherence and attrition rates. Secondary outcomes will includeefficacy measures relating to changes in pain intensity, quality of life and physical, emotional andcognitive functioning.

ConclusionsResults will establish the feasibility, acceptability and safety of a VRPEP in the treatment of chronicpain, informing a future randomised control trial.
Nonequilibrium Dynamics Across an Impurity Quantum Critical Point
Creators: name: Schiró, Marco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Whether a small quantum mechanical system is able to equilibrate with its environment once an external local perturbation drives it out of thermal equilibrium is a central question which cuts across many different fields of science. Here we consider such a problem for a correlated quantum impurity coupled to a fermionic reservoir and driven out of equilibrium by local quantum quenches such as those recently realized in optical absorption experiments on single quantum dots. We argue that equilibration in this problem is deeply connected to the occurrence of Kondo Effect at low energy and that a highly non trivial dynamical behavior may emerge whenever a local quantum critical point intrudes between a conventional Kondo screened phase and a Kondo unscreened one. We discuss this issue in the context of the Anderson Impurity model coupled to a pseudo-gap reservoir by using a correlated time dependent variational wave function that is able to qualitatively describe this physics.
description: 4+3 pages, 3 figures
Counsellors’ experiences of using creativity in counselling clients with concurrent disorders : what helps and hinders
Creators: name: Smith, Barbara
Publisher: name: University of British Columbia
Year: 2012

description: This study investigated the experience of concurrent disorders counsellors using creativity in practice. In any given year, one in five individuals in Canada experiences a mental health illness that can include a substance use disorder. Lifetime prevalence estimates of individuals with substance use disorders and severe mental illness(es) varies from approximately 40% to 60% depending on the sample. Individuals with concurrent disorders often also face additional physical health, financial, education, relational, housing, and criminal justice challenges. Ultimately these issues cost the economy more than $50 billion per year. In an era of limited resources, the need for creativity in assisting individuals with concurrent disorders seems extreme. However, there is little research investigating how concurrent disorders counsellors use creativity with their clients, particularly with regard to what nourishes and impedes their creativity. The results of this study provide insight into the factors that help and hinder concurrent disorders counsellors’ creativity in practice. Eleven participants were interviewed using the Enhanced Critical Incident Technique. The study generated 298 incidents, including 167 incidents described as helpful to creativity in practice, 88 incidents perceived as hindering creativity and 43 wish list items. These incidents were grouped into 34 categories. The 12 helping categories were: personal factors, colleagues and collaboration, resources, education and training, client factors, autonomy, supportive management, client feedback, experience, personal or professional practice, meditation/mindfulness, and personal therapy. The 10 hindering categories were: client factors, personal factors, bureaucracy, imposed models, unsupportive management, time pressure, lack of resources, colleagues, physical environment, and lack of special topics education and training. The 12 wish list categories were: special topics education and training, resources, alternative therapies, therapeutic space, integrated co-occurring disorders centre, services integration, supportive management, time, time with creative people, client factors, autonomy, and preventative work. The findings show that personal and client factors along with colleagues, education and training, and management all play significant roles in helping and hindering concurrent disorders counsellors’ creativity. Unique findings included meditation and personal therapy enhanced creativity, imposed models hindered creativity, and desires for increased services integration, and the creation of concurrent disorders centres with integrated services to enhance counsellors’ creativity.
Algorithms for geodesics
Creators: name: Karney, Charles F. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geophysics (physics.geo-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Algorithms for the computation of geodesics on an ellipsoid of revolution are given. These provide accurate, robust, and fast solutions to the direct and inverse geodesic problems and they allow differential and integral properties of geodesics to be computed.
description: LaTex, 12 pages, 8 figures. Version 2 corrects some errors and adds numerical examples. Supplementary material is available at http://geographiclib.sourceforge.net/geod.html
Elliptic hypergeometry of supersymmetric dualities II. Orthogonal groups, knots, and vortices
Creators: name: Spiridonov, V. P.
name: Vartanov, G. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider Seiberg electric-magnetic dualities for 4d $\mathcal{N}=1$ SYM theories with SO(N) gauge group. For all such known theories we construct superconformal indices (SCIs) in terms of elliptic hypergeometric integrals. Equalities of these indices for dual theories lead both to proven earlier special function identities and new conjectural relations for integrals. In particular, we describe a number of new elliptic beta integrals associated with the s-confining theories with the spinor matter fields. Reductions of some dualities from SP(2N) to SO(2N) or SO(2N+1) gauge groups are described. Interrelation of SCIs and the Witten anomaly is briefly discussed. Possible applications of the elliptic hypergeometric integrals to a two-parameter deformation of 2d conformal field theory and related matrix models are indicated. Connections of the reduced SCIs with the state integrals of the knot theory, generalized AGT duality for (3+3)d theories, and a 2d vortex partition function are described.
description: Latex, 58 pages; paper shortened, to appear in Commun. Math. Phys
Testing the process dependence of the Sivers function via hadron distributions inside a jet
Creators: name: D'Alesio, Umberto
name: Gamberg, Leonard
name: Kang, Zhong-Bo
name: Murgia, Francesco
name: Pisano, Cristian
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the process dependence of the Sivers function by considering the impact of color-gauge invariant initial and final state interactions on transverse spin asymmetries in proton-proton reactions within the framework of the transverse momentum dependent (TMD), generalized parton model. To this aim, we consider the azimuthal distribution of leading pions inside a fragmenting jet as well as single inclusive jet asymmetry in polarized proton proton collisions. In contrast to single inclusive pion production, in both cases we can isolate the Sivers contribution and thereby study its process dependence. The predictions for the Sivers asymmetry obtained with and without inclusion of color gauge factors are comparable in size but with opposite signs. We conclude that both processes represent unique opportunities to discriminate among the two approaches and test the universality properties of the Sivers function in hadronic reactions.
description: RevTex4, 5 pages, 2 figures; v2: minor corrections, references added; matches the version published in Phys. Lett. B
Neptune on tiptoes: dynamical histories that preserve the cold classical Kuiper belt
Creators: name: Wolff, Schuyler
name: Dawson, Rebekah I.
name: Murray-Clay, Ruth A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The current dynamical structure of the Kuiper belt was shaped by the orbital evolution of the giant planets, especially Neptune, during the era following planet formation, when the giant planets may have undergone planet-planet scattering and/or planetesimal-driven migration. Numerical simulations of this process, while reproducing many properties of the belt, fail to generate the high inclinations and eccentricities observed for some objects while maintaining the observed dynamically "cold" population. We present the first of a three-part parameter study of how different dynamical histories of Neptune sculpt the planetesimal disk. Here we identify which dynamical histories allow an in situ planetesimal disk to remain dynamically cold, becoming today's cold Kuiper belt population. We find that if Neptune undergoes a period of elevated eccentricity and/or inclination, it secularly excites the eccentricities and inclinations of the planetesimal disk. We demonstrate that there are several well-defined regimes for this secular excitation, depending on the relative timescales of Neptune's migration, the damping of Neptune's orbital inclination and/or eccentricity, and the secular evolution of the planetesimals. We model this secular excitation analytically in each regime, allowing for a thorough exploration of parameter space. Neptune's eccentricity and inclination can remain high for a limited amount of time without disrupting the cold classical belt. In the regime of slow damping and slow migration, if Neptune is located (for example) at 20 AU, then its eccentricity must stay below 0.18 and its inclination below 6°.
description: Accepted to ApJ. Update: Fixed typos in text and Appendix equations. Published as ApJ, 746, 171
One truth, two minds, and three tongues : conflicting media representations of the 2010 Chinese rare earth controversy
Creators: name: Chen, Justine Yi-Hsuan
Publisher: name: University of British Columbia
Year: 2013

description: On September 7, 2010, a Chinese fishing trawler collided with two Japanese Coast Guard patrol vessels near the Pinnacle Islands in the East China Sea, a territory claimed by both China and Japan. Following the arrest of the Chinese fishermen and the prolonged detention of the Chinese captain by the Japanese maritime authority, the collision incident escalated into a diplomatic showdown between the two countries. Eventually, challenged with China’s reported halting of Japan-bound rare earth metals export, vital raw materials for many Japanese industry sectors, the Japanese government conceded and released the captain. A flood of conflicting reports on China's handling of the event ensued. On the one hand, outside of China, criticisms focused on China’s political manipulation of trade and resource protectionism were rampant; on the other hand, the Chinese media denied any claims of embargo, shied away from discussing the collision, and focused on delineating China’s rare earth policy challenges. Nevertheless, many facts surrounding China's rare earth policy have been overlooked, misrepresented, misinterpreted, or misreported. By analyzing government policy documents, as well as news articles collected from Factiva and Lexis-Nexis databases and Chinese websites, this thesis looks at the discrepancies between major Western and Chinese media reporting and representations of the 2010 Rare Earth Controversy specifically, and of China's rare earth policy in general. In the process, the thesis also presents the institutional, social, and political and economic complexities surrounding China's rare earth policy making.
title: DEPRECATED: Perceived Implications Of Privatization For Canadian Coast Guard Services, Principally Arctic Icebreaking
Creators: name: Parsons, James
Publisher: name: University of Plymouth
Year: 2009
Subjects: Northwest Passage
Privatisation of ice-breaker services
Canadian Arctic
Delphi survey
Grounded theory
Exploratory factor analysis

description: Climate change, with the possibility of an ice free Arctic ocean by 2015, has generated a renewed interest in the Arctic. This interest is being driven by the possibility of easier access to the abundant supply of resources such as oil, gas, minerals, and fisheries. Interest in Arctic tourism is also growing. Retreating sea ice will provide opportunities to avail of shorter routes for maritime traffic to and from Asia, North America, and Asia via the Arctic Ocean and Northwest Passage. In addition, the rate of population growth of local inhabitants in the Canadian Arctic is the fastest in Canada and one of the fastest in the world. A growing population will increase the demand for sealift resupply to Canada's northern communities. This work presents the first attempt to examine the role of privatization of icebreaking services in light of the present and projected shortages of infrastructure to support development in the Arctic. A unique combination of multiple methods within marine transportation, comprising of Delphi, grounded theory, and quantitative survey, is applied to investigate the potential for private involvement in the delivery of icebreaking services in the Canadian Arctic. This includes a novel application of Strauss and Corbin's Grounded Theory approach to develop hypotheses and relationships grounded in expert opinion. Although the Arctic Ocean may be ice free during the summers, there is still the issue of winter freezing and the threat of lingering multi-year ice which will impede marine transportation especially during periods of darkness and fog. The research shows that the future growth and development of the Canadian Arctic will undoubtedly require the use of designated icebreakers and ice strengthened vessels. However, Canada's fleet of Arctic icebreakers is ageing and considered unsuitable for future demands. While Canada has earmarked CAD $750M for the construction of one new icebreaker scheduled for delivery in 2017, the research shows that Icebreakers can be built outside of Canada for considerably less money and in less time. Also, the management and operation of the Canadian Coast Guard is under considerable security by the Auditor General of Canada. The research shows that not unlike others Arctic nations, there is potential for the creation of private-public partnerships in the delivery of Canadian Coast Guard services, principally icebreaking, in the Arctic.
The Status of GMSB After 1/fb at the LHC
Creators: name: Kats, Yevgeny
name: Meade, Patrick
name: Reece, Matthew
name: Shih, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We thoroughly investigate the current status of supersymmetry in light of the latest searches at the LHC, using General Gauge Mediation (GGM) as a well-motivated signature generator that leads to many different simplified models. We consider all possible promptly-decaying NLSPs in GGM, and by carefully reinterpreting the existing LHC searches, we derive limits on both colored and electroweak SUSY production. Overall, the coverage of GGM parameter space is quite good, but much discovery potential still remains even at 7 TeV. We identify several regions of parameter space where the current searches are the weakest, typically in models with electroweak production, third generation sfermions or squeezed spectra, and we suggest how ATLAS and CMS might modify their search strategies given the understanding of GMSB at 1/fb. In particular, we propose the use of leptonic $M_{T2}$ to suppress $t{\bar t}$ backgrounds. Because we express our results in terms of simplified models, they have broader applicability beyond the GGM framework, and give a global view of the current LHC reach. Our results on 3rd generation squark NLSPs in particular can be viewed as setting direct limits on naturalness.
description: 44 pages, refs added, typos fixed, improved MC statistics in fig 14
A minor merger scenario for the ultraluminous X-ray source ESO 243-49 HLX-1
Creators: name: Mapelli, M.
name: Zampieri, L.
name: Mayer, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The point-like X-ray source HLX-1 is the brightest known ultraluminous X-ray source and likely the strongest intermediate-mass black hole candidate. HLX-1 is hosted in the S0 galaxy ESO 243-49, but offset with respect to the nucleus, and its optical counterpart was identified with a massive star cluster. In this paper, we study, through N-body/smoothed particle hydrodynamics simulations, the scenario where ESO 243-49 is undergoing (or just underwent) a minor merger with a gas-rich low-mass late-type galaxy. The simulations suggest that the observed star formation rate (SFR) in ESO 243-49 is a consequence of the interaction and that the companion galaxy already underwent the second pericentre passage. We propose that the counterpart of HLX-1 coincides with the nucleus (and possibly with the nuclear star cluster) of the secondary galaxy. We estimate that, if the minor merger scenario is correct, the number density of X-ray sources similar to HLX-1 is ~10^-6 Mpc^-3.
description: 10 pages, 5 figures, MNRAS, in press. Some typos fixed
The Economics of Large Diesel Engines for Electricity Supply
Creators: name: Wills, Richard John
Publisher: name: London South Bank University
Year: 1991

description: This study is an investigation of the economic potential and technical suitability of the large, slow-speed, two-stroke, marine-derived diesel engine for electricity generation in England and Wales. Technical characteristics of large diesels are examined, with emphasis on the ability of the engines to operate on alternative fuels, and their performance as electrical generators. The constraints of the electricity supply system are also assessed. Economic analysis is undertaken using discounted costs, the diesels being compared with other generating options against a wide range of background fuel scenarios and discount rates. An assessment of merit order potential and total costs is also made, together with an analysis of the changing economics of the electricity supply industry. Calculations are undertaken using a micro-computer-based simulation with spreadsheet software. Large two-stroke diesels are a technology of high efficiency and reliability which are currently neglected as a generating option. It is demonstrated that the engines have suitable technical characteristics provided adequate passive design measures are employed. Also, that such engines can exhibit resilience to future fuel price uncertainty by being able to operate successfully on alternative fuels. The diesels show superior economic qualities compared with other generating options, both in terms of investment criteria and high merit operation. The economic superiority is maintained against a wide variety of background conditions. In overall economic terms the engines are directly comparable with combined cycle gas turbines. However, whereas combined cycle plant is essentially large-scale technology, diesels in 40 MW unit sizes have the potential for providing smaller scale, high efficiency generation. Large diesels represent a sound investment for the electricity supply industry or private companies, and would be _ especially suitable for location in the South and South West where they would reinforce the existing network at minimal cost. The diesels provide a method of increasing supply security and diversity, are compatible with a cautious investment approach, and are appropriate for the new market conditions in electricity supply.
Validity of oral fluid test for Delta-9-tetrahydrocannabinol in drivers using the 2013 National Roadside Survey Data
Creators: name: Jin, Huiyan
name: Williams, Sharifa Z.
name: Chihuri, Stanford T.
name: Li, Guohua
name: Chen, Qixuan
Publisher: name: Columbia University
Year: 2018
Subjects: Marijuana
Drug testing
Drugged driving
Tetrahydrocannabinol
Epidemiology

description: Background
                Driving under the influence of marijuana is a serious traffic safety concern in the United States. Delta 9-tetrahydrocannabinol (THC) is the main active compound in marijuana. Although blood THC testing is a more accurate measure of THC-induced impairment, measuring THC in oral fluid is a less intrusive and less costly method of testing.

                Methods
                We examined whether the oral fluid THC test can be used as a valid alternative to the blood THC test using a sensitivity and specificity analysis and a logistic regression, and estimate the quantitative relationship between oral fluid THC concentration and blood THC concentration using a correlation analysis and a linear regression on the log-transformed THC concentrations. We used data from 4596 drivers who participated in the 2013 National Roadside Survey of Alcohol and Drug Use by Drivers and for whom THC testing results from both oral fluid and whole blood samples were available.

                Results
                Overall, 8.9% and 9.4% of the participants tested positive for THC in oral fluid and whole blood samples, respectively. Using blood test as the reference criterion, oral fluid test for THC positivity showed a sensitivity of 79.4% (95% CI: 75.2%, 83.1%) and a specificity of 98.3% (95% CI: 97.9%, 98.7%). The log-transformed oral fluid THC concentration accounted for about 29% of the variation in the log-transformed blood THC concentration. That is, there is still 71% of the variation in the log-transformed blood THC concentration unexplained by the log-transformed oral fluid THC concentration. Back-transforming to the original scale, we estimated that each 10% increase in the oral fluid THC concentration was associated with a 2.4% (95% CI: 2.1%, 2.8%) increase in the blood THC concentration.

                Conclusions
                The oral fluid test is a highly valid method for detecting the presence of THC in the blood but cannot be used to accurately measure the blood THC concentration.
Edge properties of the chiral d-wave superconducting state in doped graphene
Creators: name: Black-Schaffer, Annica M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of edges on the intrinsic electron-electron interaction driven d-wave superconducting state in graphene doped close to the van Hove singularity. While the bulk is in a chiral $d_{x^2-y^2}+id_{xy}$ state, the order parameter at any edge is enhanced and has $d_{x^2-y^2}$-symmetry, with a decay length strongly increasing with weakening superconductivity. No graphene edge is pair breaking for the $d_{x^2-y^2}$ state and we never find any localized zero-energy edge states. We find two chiral edge modes which carry a spontaneous, but not quantized, quasiparticle current related to the zero-energy momentum. Moreover, for realistic values of the Rashba spin-orbit coupling, a Majorana fermion appears at the edge when tuning a Zeeman field.
description: 8 pages, 5 figures. Supplementary material added. Published version
HUVN Investiga nº 31
Creators: name: Gonzalez-Flores, Encarnación
name: Alba Ruiz, Rubén
name: Rodriguez del Aguila, MMar
Publisher: name: Zenodo
Year: 2025
Subjects: Investigación
Formación
Producción Científica
Recursos

description: El boletín "HUVN Investiga" número 31, publicado en marzo de 2025, incluye diversos temas relevantes sobre investigación en el Hospital Universitario Virgen de las Nieves.

Se destacan acuerdos para la publicación en acceso abierto con editoriales importantes.

Información sobre premios, becas y proyectos financiados.

Detalles de ensayos clínicos aprobados y artículos científicos recientes.

Este boletín resalta el compromiso del hospital con la investigación y los recursos disponibles para apoyar a sus investigadores en la producción científica y difusión de sus trabajos.
description: Este boletín mensual informa sobre novedades y avances en investigación en el Hospital Universitario Virgen de las Nieves.