cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Statistical Properties of Galactic δ Scuti Stars: Revisited
Creators: name: Chang, Seo-Won
name: Protopapas, Pavlos
name: Kim, Dae-Won
name: Byun, Yong-Ik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present statistical characteristics of 1,578 δ Scuti stars including nearby field stars and cluster member stars within the Milky Way. We obtained 46% of these stars (718 stars) from the works done by Rodríguez and collected the remaining 54% stars (860 stars) from other literatures. We updated the entries with the latest information of sky coordinate, color, rotational velocity, spectral type, period, amplitude and binarity. The majority of our sample are well characterized in terms of typical period range (0.02-0.25 days), pulsation amplitudes (<0.5 mag) and spectral types (A-F type). Given this list of δ Scuti stars, we examined relations between their physical properties (i.e., periods, amplitudes, spectral types and rotational velocities) for field stars and cluster members, and confirmed that the correlations of properties are not significantly different from those reported in the Rodríguez's works. All the δ Scuti stars are cross-matched with several X-ray and UV catalogs, resulting in 27 X-ray and 41 UV-only counterparts. These counterparts are interesting targets for further study because of their rarity and uniqueness in showing δ Scuti-type variability and X-ray/UV emission at the same time. The compiled catalog can be accessed through the web interface http://stardb.yonsei.ac.kr/DeltaScuti
description: 15 pages, 8 figures, 6 tables. Accepted for publication in AJ. The catalog is available at http://stardb.yonsei.ac.kr/DeltaScuti
Health-promoting behaviors: Predictors of early vs late initiation to prenatal care
Creators: name: McKeon, Frances Mary
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: The purpose of this descriptive, quantitative study was to examine factors that could predict a woman's timing of prenatal care initiation. Participation in early prenatal care, a type of health-promoting behavior, has been associated with improved maternal/child health. Many women however, delay prenatal care initiation until late in their pregnancy; Pender's Health Promotion Model and self-reported data were used to examine the relationship between: (a) preconception participation in health-promoting behaviors, (b) demographic variables, (c) situational factors, (d) interpersonal social support, and (e) perceived barriers to/benefits of prenatal care and the timing of initiation to prenatal care. Self-administered questionnaires were completed by 150 pregnant women recruited from two northern Nevada prenatal care clinics. Statistics used to analyze the data included correlation, regression and multiple regression. Both situational factor unplanned pregnancy and increased barriers to care were statistically significant in predicting later initiation to prenatal care; Healthy People 2000 (1990) includes goals to increase the number of pregnant women initiating early prenatal care. Participation in early prenatal care can potentially promote the health of mother and child. A behavior such as this can impact the health of a future generation.
Second order expansions for high-dimension low-sample-size data statistics in random setting
Creators: name: Christoph, Gerd
name: Ulyanov, Vladimir V.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2020
Subjects: subject: Second order expansions
subject: High-dimensional
subject: Low sample size
subject: Random sample size
subject: Laplace distribution
subject: Student’s t-distribution
subject: 510.72

description: We consider high-dimension low-sample-size data taken from the standard multivariate normal distribution under assumption that dimension is a random variable. The second order Chebyshev–Edgeworth expansions for distributions of an angle between two sample observations and corresponding sample correlation coefficient are constructed with error bounds. Depending on the type of normalization, we get three different limit distributions: Normal, Student’s t-, or Laplace distributions. The paper continues studies of the authors on approximation of statistics for random size samples.
GATERS at ISCOT
Creators: name: Atlar, Mehmet
name: Aktas, Batuhan
name: Gurkan, Ahmet
name: Sasaki, Noriyuki
Publisher: name: figshare
Year: 2022
Subjects: Naval architecture
Marine engineering

description: A presentation entitled ‘A timely retrofit challenge for greener propulsion of ships: EC H2020 Project “GATERS’ was given at the International Conference on Ship and Offshore Technology, by introducing this EC H2020 funded three-year Innovation Action project.
Long-term impact of early-life stress on hippocampal plasticity : spotlight on astrocytes
Creators: name: Çalişkan, Gürsel
name: Müller, Anke
name: Albrecht, Anne
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2020
Subjects: subject: Astrocyte
subject: Early-life stress
subject: Maternal separation
subject: Juvenile stress
subject: Dorsal hippocampus
subject: Long-term potentiation
subject: Short-term plasticity
subject: Gliotransmission
subject: Tripartite synapse
subject: 610.72

description: Adverse experiences during childhood are among the most prominent risk factors for developing mood and anxiety disorders later in life. Early-life stress interventions have been established as suitable models to study the neurobiological basis of childhood adversity in rodents. Di erent models such as maternal separation, impaired maternal care and juvenile stress during the postweaning/prepubertal life phase are utilized. Especially within the limbic system, they induce lasting alterations in neuronal circuits, neurotransmitter systems, neuronal architecture and plasticity that are further associated with emotional and cognitive information processing. Recent studies found that astrocytes, a special group of glial cells, have altered functions following early-life stress as well. As part of the tripartite synapse, astrocytes interact with neurons in multiple ways by a ecting neurotransmitter uptake and metabolism, by providing gliotransmitters and by providing energy to neurons within local circuits. Thus, astrocytes comprise powerful modulators of neuronal plasticity and are well suited to mediate the long-term e ects of early-life stress on neuronal circuits. In this review, we will summarize current findings on altered astrocyte function and hippocampal plasticity following early-life stress. Highlighting studies for astrocyte-related plasticity modulation as well as open questions, we will elucidate the potential of astrocytes as new targets for interventions against stress-induced neuropsychiatric disorders.
Antiferroelectric bent-core liquid crystal for possible high-power capacitors and electrocaloric devices
Creators: name: Saha, Rony
name: Feng, Chenrun
name: Eremin, Alexey
name: Jákli, Antal
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2020
Subjects: subject: Bent-core liquid crystals
subject: Ferroelectricity
subject: Energy storage
subject: 530

description: We present small-angle X-ray scattering, polarized optical microscopy and electric current measurements of a sulfur-containing bent-core liquid crystal material for characterization of the layer and director structures, thermally and electrically driven transitions between antiferroelectric and ferroelectric structures and switching properties. It was found that the material has polarization-modulated homochiral synclinic ferroelectric (SmCsPFmod), homochiral anticlinic antiferroelectric (SmCaPA) and racemic synclininc antiferroelectric (SmCsPA) structures that can be reversibly switched between each other either thermally and/or electrically. High switching polarization combined with softness of the liquid crystalline structure makes this compound a good candidate for applications in high-power capacitors and electrocaloric devices.
An aluminium tool for multiple stellar generations in the globular clusters 47 Tuc and M 4
Creators: name: Carretta, Eugenio
name: Gratton, Raffaele
name: Bragaglia, Angela
name: D'Orazi, Valentina
name: Lucatello, Sara
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present aluminium abundances for a sample of about 100 red giant stars in each of the Galactic globular clusters 47 Tuc (NGC 104) and M 4 (NGC 6121). We have derived homogeneous abundances from intermediate-resolution FLAMES/GIRAFFE spectra. Aluminium abundances are from the strong doublet Al I at 8772-8773 A as in previous works done for giants in NGC 6752 and NGC 1851, and nitrogen abundances are extracted from a large number of features of the CN molecules, by assuming a suitable carbon abundance. We added previous homogeneous abundances of O and Na and newly derived abundances of Mg and Si for our samples of 83 stars in M 4 and 116 stars in 47 Tuc to obtain the full set of elements from proton-capture reactions produced by different stellar generations in these clusters. By simultaneously studying the Ne-Na and Mg-Al cycles of H-burning at high temperature our main aims are to understand the nature of the polluters at work in the first generation and to ascertain whether the second generation of cluster stars was formed in one or, rather, several episodes of star formation. Our data confirm that in M 4 only two stellar populations are visible. On the other hand, for 47 Tuc a cluster analysis performed on our full dataset suggests that at least three distinct groups of stars are present on the giant branch. The abundances of O, Na, Mg and Al in the intermediate group can be produced within a pollution scenario; results for N are ambiguous, depending on the C abundance we adopt for the three groups.
description: 11 pages, 9 figures, 2 on-line tables: accepted for publication on Astronomy and Astrophysics
Civic virtue and public policy: Discerning the particulars of reforming the General Mining Law of 1872
Creators: name: Murray, Scott Fitzgerald
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: How ought we, both as a society and as individuals, to reason about public policy matters? This question is examined for the purposes of analyzing the General Mining Law of 1872 and advocating reforms to this public lands law anachronism. Drawing from Aristotle and David Hume, individuals of good character, acting as citizens in pursuit of the public good through historically informed self-government deliberate best about public policy matters. It is through the exercise of civic virtue, which civic republican government encourages, that incremental and acceptable solutions to public policy problems are most likely to be found. When examined using a more formative civic virtue-based public philosophy, strong ethical arguments can be made for reforming the General Mining Law. After discerning the particulars and identifying its morally salient features, this Law does not stand up to modern concerns for economic efficiency and environmental quality. It requires major reform.
Probability Distribution Functions OF 12CO(J = 1-0) Brightness and Integrated Intensity in M51: The PAWS View
Creators: name: Hughes, Annie
name: Meidt, Sharon E.
name: Schinnerer, Eva
name: Colombo, Dario
name: Pety, Jerome
name: Leroy, Adam K.
name: Dobbs, Clare L.
name: Garcia-Burillo, Santiago
name: Thompson, Todd A.
name: Dumas, Gaelle
name: Schuster, Karl F.
name: Kramer, Carsten
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse the distribution of CO brightness temperature and integrated intensity in M51 at ~40 pc resolution using new CO data from the Plateau de Bure Arcsecond Whirlpool Survey (PAWS). We present probability distribution functions (PDFs) of the CO emission within the PAWS field, which covers the inner 11 x 7 kpc of M51. We find variations in the shape of CO PDFs within different M51 environments, and between M51 and M33 and the Large Magellanic Cloud (LMC). Globally, the PDFs for the inner disk of M51 can be represented by narrow lognormal functions that cover 1 to 2 orders of magnitude in CO brightness and integrated intensity. The PDFs for M33 and the LMC are narrower and peak at lower CO intensities. However, the CO PDFs for different dynamical environments within the PAWS field depart from the shape of the global distribution. The PDFs for the interarm region are approximately lognormal, but in the spiral arms and central region of M51, they exhibit diverse shapes with a significant excess of bright CO emission. The observed environmental dependence of the shape of the CO PDFs is qualitatively consistent with changes that would be expected if molecular gas in the spiral arms has a larger range of average densities, gas temperatures and velocity fluctuations, though further work is required to disentangle the importance of large-scale dynamical effects versus star formation feedback in regulating these properties. We show that the shape of the CO PDFs for different M51 environments is only weakly related to global properties of the CO emission, but is strongly correlated with some properties of the local giant molecular cloud (GMC) and young stellar cluster populations. For galaxies with strong spiral structure such as M51, our results indicate that galactic-scale dynamical processes play a significant role in the formation and evolution of GMCs and stellar clusters.(abridged)
description: 30 pages, 18 figures, accepted to ApJ PAWS special issue
Calculation of 1/m^{2}_{b} corrections to for polarized Λ_{b} in the Bethe-Salpeter equation approach
Creators: name: Zhang, L.
name: Guo, X. -H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The heavy baryon Λ_{Q} (Q=b or c) can be regarded as composed of a heavy quark and a scalar light diquark which has good spin and isospin quantum numbers. In this picture we establish the Bethe-Salpeter (BS) equation for Λ_{Q} to second order in the 1/m_{Q} expansion. With the kernel containing both the scalar confinement and the one-gluon-exchange terms we solve the BS equation numerically. The value of the spin-dependant form factor for the matrix element , ε_{b}, which is non-zero at order 1/m^{2}_{b}, is obtained numerically from our model.
Proper triangular Ga-actions on A^4 are translations
Creators: name: Dubouloz, Adrien
name: Finston, David
name: Jaradat, Imad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We describe the structure of geometric quotients for proper locally triangulable additve group actions on locally trivial A^3-bundles over a noetherian normal base scheme X defined over a field of characteristic 0. In the case where dim X=1, we show in particular that every such action is a translation with geometric quotient isomorphic to the total space of a vector bundle of rank 2 over X. As a consequence, every proper triangulable Ga-action on the affine four space A^4 over a field of characteristic 0 is a translation with geometric quotient isomorphic to A^3.
Una iniciativa internacional colectiva de recursos gratuitos en línea con contenido completo de América Latina, el Caribe, latinos de EE.UU. y la Península Ibérica
Creators: name: Alonso-Regalado, Jesús
name: Kellett, Cate
name: Castro, Renan Marinho De
Publisher: name: IUPUI University Library
Year: 2023
Subjects: Caribbean studies resources
Latinx studies resources
Iberian studies resources
Latin American studies resources

description: Esta presentación se centra en el proyecto LACLI como una herramienta fundamental para dar visibilidad a recursos gratuitos en línea con contenido completo de América Latina, el Caribe, latinos de EE.UU. y la Península Ibérica. LACLI se encuentra bajo una licencia de creative commons que permite la reutilización de sus contenidos para la creación de otros sin fines comerciales. Este proyecto recibió el premio SALALM para iniciativas de colaboración institucional en 2022. LACLI es gestionado por El Consorcio de Bibliotecas del Noreste de América Latina (LANE) y cuenta con las siguientes entidades colaboradoras: El Colegio de México. Biblioteca Daniel Cosío Villegas y la Fundação Getulio Vargas. Centro de Pesquisa e Documentação de História Contemporânea do Brasil (CPDOC).
The relationship between future time perspective and breast self-examination in young adult women
Creators: name: Ronan, Nancy Marie
Publisher: name: University of Nevada, Las Vegas
Year: 1993

description: The purpose of this study was to explore the relationship between future time perspective (FTP) and frequency and quality of BSE performance. FTP relates to the way an individual views her own personal future, which may influence many aspects of her life, including behavior. Recent studies show FTP to positively relate to other health behaviors; The sample consisted of 153 young adult women from the Student Health Center of a large University who took an informational health class which included BSE instruction. A demographic questionnaire, Champion's Quality of BSE survey, and Heimberg's FTP Inventory were used to obtain data. A conceptual model was proposed to show the relationship of variables to FTP and BSE performance; The study showed a significant relationship exists between FTP and BSE frequency, but not quality, of performance. Stepwise multiple regression identified level of confidence in performing BSE as a strong variable for both BSE frequency and quality.
On $q$-analogues of two-one formulas for multiple harmonic sums and multiple zeta star values
Creators: name: Pilehrood, Khodabakhsh Hessami
name: Pilehrood, Tatiana Hessami
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Recently, the present authors jointly with Tauraso found a family of binomial identities for multiple harmonic sums (MHS) on strings $(\{2\}^a,c,\{2\}^b)$ that appeared to be useful for proving new congruences for MHS as well as new relations for multiple zeta values. Very recently, Zhao generalized this set of MHS identities to strings with repetitions of the above patterns and, as an application, proved the two-one formula for multiple zeta star values conjectured by Ohno and Zudilin. In this paper, we extend our approach to $q$-binomial identities and prove $q$-analogues of two-one formulas for multiple zeta star values.
description: 14 pages. References have been corrected
Testing the naked eye observation of the cervix after application of acetic acid as an effective screening test for cervical dysplasia
Creators: name: Schmidt, Carol M
Publisher: name: University of Nevada, Las Vegas
Year: 1997

description: The Papanicolaou test is the recommended screening for cervical cancer. It has a high false-negative rate. Because of the imperfection of the Papanicolaou other screening tests have been developed. Five studies compared various aspects of different screening techniques with mixed results; A quasi-experimental design study was constructed comparing the naked eye observation of the cervix to the colposcopy observation, and the naked eye observation of the cervix to the Papanicolaou test; The sample of 136 women from the Las Vegas area, being seen at their regular clinics were examined with all three procedures. A physiologic framework directed this study. The research hypotheses included: (1) The naked eye observation of the cervix agrees with the colposcopy observation; (2) The naked eye observation of the cervix agrees with the Papanicolaou test; (3) The naked eye observation of the cervix increases detection of cervical dysplasia. Hypotheses 1 and 3 were accepted.
The use of portfolios to inform classroom practice
Creators: name: Olson, Dora Jean
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: The Use of Portfolios to Inform Classroom Practice is a case study examining the effects of a portfolio assessment system introduced into a second grade classroom. The research was based on the philosophical analysis of Duschl and Gitomer (1991) who describe the concept of a "portfolio culture": as a result of using literacy portfolios in the classroom, what changes, if any, occur in students' metacognition, attitudes, behaviors, empowerment and engagement? The Elementary Reading Attitude Survey as well as two teacher-constructed semantic differential instruments were used to collect quantitative measures on the effects of portfolio use. These measures were supplemented with interviews of parents and children as well as teacher observations to characterize the changes that occurred in the class as a result of the introduction of the portfolio assessment system. The outcomes from this analysis indicated that there were positive changes in all aspects under study.
Design, synthesis and molecular docking studies of 5-fluoro 1-aryl/alkyl sulfonyl benzimidazole derivatives for treatment of Parkinson’s disease
Creators: name: Roy, Subarna
name: Sen, Subhadeep
name: Saha, Samiran
name: Deb, Sandip Kumar
name: Singh, Bhagat
name: Biswas, Goutam
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Novel sulfonyl derivatives of 5-fluoro-substituted benzimidazole were synthesized and characterized by 1H-NMR, 13C-NMR, 19F-NMR and mass spectrometry. Molecular docking study against monoamine oxidase B (MAO-B), responsible for Parkinson’s disease (PD), was performed. The binding energy and interactions with active amino acid residues in the binding site of newly synthesized derivatives, as well as conventional inhibitors (Selegiline and Rasagiline), were investigated and presented. According to the docking scores predicted by ADV (AutoDock vina) and AD (AutoDock), most of the synthesized derivatives have higher binding affinity toward MAO-B than the conventional inhibitors. This study shows that these fluoro-substituted benzimidazole derivatives can be developed into essential drugs for the treatment of PD. The antibacterial property of these compounds was investigated by disk diffusion test and minimum inhibitory concentration (MIC), against gram-negative and gram-positive bacteria. And the results were further verified by the bacteria kill test with respect to time. All the synthesized compounds demonstrated considerable antibacterial activity against both bacterial strains. Therefore, this work focuses on defining the efficiency of different types of sulfonyl derivatives of fluorinated benzimidazole in biomedical research for the treatment of PD highlighting their versatile biological properties.
Evidence for Environmental Dependence of the Upper Stellar Initial Mass Function in Orion A
Creators: name: Hsu, Wen-hsin
name: Hartmann, Lee
name: Allen, Lori
name: Hernandez, Jesus
name: Megeath, S. T.
name: Tobin, John J.
name: Ingleby, Laura
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We extend our previous study of the stellar population of L1641, the lower-density star-forming region of the Orion A cloud south of the dense Orion Nebula Cluster (ONC), with the goal of testing whether there is a statistically significant deficiency of high-mass stars in low-density regions. Previously, we compared the observed ratio of low-mass stars to high-mass stars with theoretical models of the stellar initial mass function (IMF) to infer a deficiency of the highest-mass stars in L1641. We expand our population study to identify the intermediate mass (late B to G) L1641 members in an attempt to make a more direct comparison with the mass function of the nearby ONC. The spectral type distribution and the K-band luminosity function of L1641 are similar to those of the ONC (Hillenbrand 1997; Muench et al. 2002), but problems of incompleteness and contamination prevent us from making a detailed test for differences. We limit our analysis to statistical tests of the ratio of high-mass to low-mass stars, which indicate a probability of only 3% that the ONC and the southern region of L1641 were drawn from the same population, supporting the hypothesis that the upper mass end of the IMF is dependent on environmental density.
description: 14 pages, 11 figures, accepted for publication in ApJ
A variational principle and its connection with fixed point theory
Creators: name: Ohashi, Ryo
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: In this thesis, the following topics will be discussed; In chapter 2, a variational principle due to I. Ekeland (EVP) will be considered which deals with minimization of functions on a complete metric space; In chapter 3, the notion of completeness of a metric space will be characterized by means of various approaches. Several different statements will be given and shown to be all equivalent. One of these will be considered separately in chapter 4; In chapter 4, a direct approach to finding a fixed point of a self-mapping T on a complete metric space will be discussed. A transfinite induction argument will be used; Chapter 5 deals with an application. We will present a new proof of a Minimum/Maximum Principle at Infinity using Ekeland's Variational Principle; Finally, in chapter 6, we will give an informal explanation (through an iteration process) of how transfinite induction works in finding fixed points of T. Several illustrative examples will be presented.
Design, synthesis and molecular docking studies of 5-fluoro 1-aryl/alkyl sulfonyl benzimidazole derivatives for treatment of Parkinson’s disease
Creators: name: Roy, Subarna
name: Sen, Subhadeep
name: Saha, Samiran
name: Deb, Sandip Kumar
name: Singh, Bhagat
name: Biswas, Goutam
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Novel sulfonyl derivatives of 5-fluoro-substituted benzimidazole were synthesized and characterized by 1H-NMR, 13C-NMR, 19F-NMR and mass spectrometry. Molecular docking study against monoamine oxidase B (MAO-B), responsible for Parkinson’s disease (PD), was performed. The binding energy and interactions with active amino acid residues in the binding site of newly synthesized derivatives, as well as conventional inhibitors (Selegiline and Rasagiline), were investigated and presented. According to the docking scores predicted by ADV (AutoDock vina) and AD (AutoDock), most of the synthesized derivatives have higher binding affinity toward MAO-B than the conventional inhibitors. This study shows that these fluoro-substituted benzimidazole derivatives can be developed into essential drugs for the treatment of PD. The antibacterial property of these compounds was investigated by disk diffusion test and minimum inhibitory concentration (MIC), against gram-negative and gram-positive bacteria. And the results were further verified by the bacteria kill test with respect to time. All the synthesized compounds demonstrated considerable antibacterial activity against both bacterial strains. Therefore, this work focuses on defining the efficiency of different types of sulfonyl derivatives of fluorinated benzimidazole in biomedical research for the treatment of PD highlighting their versatile biological properties.
Long-range coherent coupling in a quantum dot array
Creators: name: Braakman, Floris R.
name: Barthelemy, Pierre
name: Reichl, Christian
name: Wegscheider, Werner
name: Vandersypen, Lieven M. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Controlling long-range quantum correlations is central to quantum computation and simulation. In quantum dot arrays, experiments so far rely on nearest-neighbour couplings only, and inducing long-range correlations requires sequential local operations. Here we show that two distant sites can be tunnel coupled directly. The coupling is mediated by virtual occupation of an intermediate site, with a strength that is controlled via the energy detuning of this site. It permits a single charge to oscillate coherently between the outer sites of a triple dot array without passing through the middle, as demonstrated through the observation of Landau-Zener-Stückelberg interference. The long-range coupling significantly improves the prospects of fault-tolerant quantum computation using quantum dot arrays and opens up new avenues for performing quantum simulations in nanoscale devices.
Obstetric Violence: What Is It? An Overview Of Its Status, Challenges and Potential Solutions
Creators: name: Osorio, Florencia
Publisher: name: University of Chicago
Year: 2023
Subjects: subject: Obstetric Violence
subject: Pregnancy
subject: Accountability
subject: Mental Health
subject: Human Rights

description: The concept of obstetric violence has gained notoriety in recent years thanks to feminist and women's health movements, who seek to highlight the high rates of violent behavior directed towards pregnant women, in labor and postpartum and perpetrated by health personnel. This policy brief explores the various definitions of the term Obstetric Violence, its historical roots, the prevalence of the phenomenon in different countries and regions, its causes, consequences, and the theoretical and practical solutions proposed by the actors most involved in the field. A conceptual framework that addresses Obstetric Violence from a human rights perspective and interventions that increase accountability mechanisms within health facilities stand as useful alternatives to advance in this challenge.
New acceleration technique for the backpropagation algorithm
Creators: name: Sadhu, Prasad Durga
Publisher: name: University of Nevada, Las Vegas
Year: 1997

description: Artificial neural networks have been studied for many years in the hope of achieving human like performance in the area of pattern recognition, speech synthesis and higher level of cognitive process. In the connectionist model there are several interconnected processing elements called the neurons that have limited processing capability. Even though the rate of information transmitted between these elements is limited, the complex interconnection and the cooperative interaction between these elements results in a vastly increased computing power; The neural network models are specified by an organized network topology of interconnected neurons. These networks have to be trained in order them to be used for a specific purpose. Backpropagation is one of the popular methods of training the neural networks. There has been a lot of improvement over the speed of convergence of standard backpropagation algorithm in the recent past. Herein we have presented a new technique for accelerating the existing backpropagation without modifying it. We have used the fourth order interpolation method for the dominant eigen values, by using these we change the slope of the activation function. And by doing so we increase the speed of convergence of the backpropagation algorithm; Our experiments have shown significant improvement in the convergence time for problems widely used in benchmarKing Three to ten fold decrease in convergence time is achieved. Convergence time decreases as the complexity of the problem increases. The technique adjusts the energy state of the system so as to escape from local minima.
Analyzing Race and Internalized Colonialism in Contemporary American Society Through Autoethnographic Inquiry
Creators: name: Chalasani, Gitika
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Autoethnography
subject: Race
subject: Internalized Colonialism
subject: Sociology
subject: FOS: Sociology
subject: Critical Race
subject: Race Autoethnography

description: This paper provides a written narrative of how socio-political marginalization from colonial internalization maintains a grasp on our psyches and can be pervasive in our personal histories, perpetuating a “fragility” that fosters internal, racial tension (Ellis, Adams, & Bochner, 2011; Elam, 2019; DiAngelo, 2018). Our internalization of marginalization remains with us even when we no longer occupy spaces in which we are minorities and continues to inform how we view the world and formulate opinions (Gutiérrez, 2004). Therefore, it is of utmost importance that, as communities and as individuals, we promote conversations about internalized values regarding racial and ethnic identity to unpack and heal these colonial traumas. Through the research methodology of autoethnographic inquiry, I aim to put forth an embodied narrative as a brown woman growing and existing in a predominantly white space that validates the depth and realness of the internalized colonialism that remains an obstacle to realization and progress for many ethnically diverse communities within contemporary American society (McMillan & Ramirez, 2016; Muncey, 2010). With my chosen method of autoethnography I engage not just in personal inquiry but also in political assertion, embracing both personal and political contexts to holistically reflect meaning embedded in lived experience (Jones, 2005; Ellis, Adams, & Bochner, 2011).
Unicyclic Graphs with equal Laplacian Energy
Creators: name: Fritscher, Eliseu
name: Hoppen, Carlos
name: Trevisan, Vilmar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We introduce a new operation on a class of graphs with the property that the Laplacian eigenvalues of the input and output graphs are related. Based on this operation, we obtain a family of order (square root of n) noncospectral unicyclic graphs on n vertices with the same Laplacian energy.
description: 11 pages, 11 figures, slightly modified version of Theorem 1 when compared with original paper
Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. II. The Relativistic Jet Shuts Off and a Transition to Forward Shock X-ray/Radio Emission
Creators: name: Zauderer, B. A.
name: Berger, E.
name: Margutti, R.
name: Pooley, G. G.
name: Sari, R.
name: Soderberg, A. M.
name: Brunthaler, A.
name: Bietenholz, M. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present continued multi-frequency radio observations of the relativistic tidal disruption event Sw1644+57 extending to dt~600 d. The data were obtained with the JVLA and AMI Large Array. We combine these data with public Swift/XRT and Chandra X-ray observations over the same time-frame to show that the jet has undergone a dramatic transition starting at ~500 d, with a sharp decline in the X-ray flux by about a factor of 170 on a timescale of dt/t<0.2. The rapid decline rules out a forward shock origin (direct or reprocessing) for the X-ray emission at <500 d, and instead points to internal dissipation in the inner jet. On the other hand, our radio data uniquely demonstrate that the low X-ray flux measured by Chandra at ~610 d is consistent with emission from the forward shock. Furthermore, the Chandra data are inconsistent with thermal emission from the accretion disk itself since the expected temperature of 30-60 eV and inner radius of 2-10 R_s cannot accommodate the observed flux level or the detected emission at >1 keV. We associate the rapid decline with a turn off of the relativistic jet when the mass accretion rate dropped below Mdot_Edd~0.006 Msun/yr (for a 3x10^6 Msun black hole and order unity efficiency) indicating that the peak accretion rate was about 330 Mdot_Edd, and the total accreted mass by 500 d is about 0.15 Msun. From the radio data we further find significant flattening in the integrated energy of the forward shock at >250 d with E_j,iso~2x10^54 erg (E_j~10^52$ erg for a jet opening angle, theta_j=0.1) following a rise by about a factor of 15 at 30-250 d. Projecting forward, we predict that the emission in the radio and X-ray bands will evolve in tandem with similar decline rates.
description: 12 pages, 5 figures, 2 tables, submitted to ApJ
Tunability of the k-space Location of the Dirac Cones in the Topological Crystalline Insulator Pb1-xSnxTe
Creators: name: Tanaka, Y.
name: Sato, T.
name: Nakayama, K.
name: Souma, S.
name: Takahashi, T.
name: Ren, Zhi
name: Novak, M.
name: Segawa, Kouji
name: Ando, Yoichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed systematic angle-resolved photoemission spectroscopy of the topological crystalline insulator (TCI) Pb1-xSnxTe to elucidate the evolution of its electronic states across the topological phase transition. As previously reported, the band structure of SnTe (x = 1.0) measured on the (001) surface possesses a pair of Dirac-cone surface states located symmetrically across the Xbar point in the (110) mirror plane. Upon approaching the topological phase transition into the trivial phase at x_c ~ 0.25, we discovered that Dirac cones gradually move toward the Xbar point with its spectral weight gradually reduced with decreasing x. In samples with x <= 0.2, the Dirac-cone surface state is completely gone, confirming the occurrence of the topological phase transition. Also, the evolution of the valence band feature is found to be consistent with the bulk band inversion taking place at x_c. The tunability of the location of the Dirac cones in the Brillouin zone would be useful for applications requiring Fermi-surface matching with other materials, such as spin injection.
description: 5 pages, 4 figures
Existence and Uniqueness of Tronquée Solutions of the Third and Fourth Painlevé Equations
Creators: name: Lin, Yu
name: Dai, Dan
name: Tibboel, Pieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33E17, 34M55

description: It is well-known that the first and second Painlevé equations admit solutions characterised by divergent asymptotic expansions near infinity in specified sectors of the complex plane. Such solutions are pole-free in these sectors and called tronquée solutions by Boutroux. In this paper, we show that similar solutions exist for the third and fourth Painlevé equations as well.
description: 20 pages
A generalized eigenvalue algorithm for tridiagonal matrix pencils based on a nonautonomous discrete integrable system
Creators: name: Maeda, Kazuki
name: Tsujimoto, Satoshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37K10, 37K40, 42C05, 65F15

description: A generalized eigenvalue algorithm for tridiagonal matrix pencils is presented. The algorithm appears as the time evolution equation of a nonautonomous discrete integrable system associated with a polynomial sequence which has some orthogonality on the support set of the zeros of the characteristic polynomial for a tridiagonal matrix pencil. The convergence of the algorithm is discussed by using the solution to the initial value problem for the corresponding discrete integrable system.
description: 24 pages, 2 figures, 3 tables
title: ADHD Prediction Through Analysis of Eye Movements With Graph Convolution Network
Creators: name: Jayawardena, Gavindya
name: Jayarathna, Sampath
name: He, Yi
Publisher: name: Old Dominion University Libraries
Year: 2023

description: Processing speech with background noise requires appropriate parsing of the distorted auditory signal, fundamental language abilities as well as higher signal-to-noise ratio. Adolescents with ADHD have difficulty processing speech with background noise due to reduced inhibitory control and working memory capacity. In this study we utilize Audiovisual Speech-In-Noise performance and eye-tracking measures of young adults with ADHD compared to age-matched controls, and generate graphs for ADHD evaluation using the eye-tracking data. We form graphs utilizing the eight eye-tracking features (fixation count, average, total, and standard deviation of fixation duration, max and min saccade peak velocity, min, average, and standard deviation of saccade amplitude), and connection among trials in terms of subject, background noise, and sentence. We created multiple un-directed multi- graphs, each with 830 nodes which corresponds to a trial. Each trial is defined by a participant, background noise-level, and the sentence the participant was presented. For instance, k th node has information of {‘background noise level’: x, ‘sentence’: i, ‘subject’: j }. For each node, we create a feature matrix utilizing aforementioned eight eye gaze metrics. Links between pair of nodes mean that they belong to the same edge category. We introduced different types of edge categories: Same Background Noise Level, Same Subject, Same Sentence, Same Background Noise Level and Same Subject, Same Subject and Same Sentence, and Same Background Noise Level and Same Sentence. In our Graph Convolutional Network (GCN) model, we use node embedding and adjacency matrix representation as the input. The GCN layer is a multiplication of inputs, weights, and the normalized adjacency matrix. From the results we observed that only “Same Background Noise Level and Same Subject” edge category was able to give slightly better results in terms of AUC ROC and Precision. Additionally, we visualized what the model has learned by accessing the embeddings before the classification layer.
Federal power, states' rights and nuclear waste: What is a just solution?
Creators: name: Randall, Steven Mark
Publisher: name: University of Nevada, Las Vegas
Year: 1993

description: Federal Power, States' Rights and Nuclear Waste: What Is A Just Solution?, analyzes the issue regarding the right of the federal government to construct a high level nuclear waste storage facility on federal land within a state that is opposed to a storage facility within state boundaries. Within the thesis is an overview of federalism followed by a history of the Tenth Amendment and a case analysis. An examination of the ethical considerations of the issue is considered. Finally, an analysis of the current laws regarding nuclear waste storage is presented, followed by policy recommendations for the use of nuclear energy and the storage of nuclear waste. Current policy is revised to achieve a more just solution with regard to the rights of states.
Mechanics of Adhered, Pressurized Graphene Blisters
Creators: name: Boddeti, Narasimha G.
name: Koenig, Steven P.
name: Long, Rong
name: Xiao, Jianliang
name: Bunch, J. Scott
name: Dunn, Martin L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the mechanics of pressurized graphene membranes using an experimental configuration that allows the determination of the elasticity of graphene and the adhesion energy between a substrate and a graphene (or other two-dimensional solid) membrane. The test consists of a monolayer graphene membrane adhered to a substrate by surface forces. The substrate is patterned with etched microcavities of a prescribed volume and when they are covered with the graphene monolayer it traps a fixed number (N) of gas molecules in the microchamber. By lowering the ambient pressure, and thus changing the pressure difference across the graphene membrane, the membrane can be made to bulge and delaminate in a stable manner from the substrate. Here we describe the analysis of the membrane/substrate as a thermodynamic system and explore the behavior of the system over representative experimentally-accessible geometry and loading parameters. We carry out companion experiments and compare them to the theoretical predictions and then use the theory and experiments together to determine the adhesion energy of graphene/SiO2 interfaces. We find an average adhesion energy of 0.24 J/m2 which is lower, but in line with our previously reported values. We assert that this test, which we call the constant N blister test, is a valuable approach to determine the adhesion energy between two-dimensional solid membranes and a substrate, which is an important, but not well-understood aspect of behavior. The test also provides valuable information that can serve as the basis for subsequent research to understand the mechanisms contributing to the observed adhesion energy. Finally, we show how in the limit of a large microcavity, the constant N test approaches the behavior observed in a constant pressure blister test and we provide an experimental observation that suggests this behavior.
description: To appear in Journal of Applied Mechanics
Accounting for Baryons in Cosmological Constraints from Cosmic Shear
Creators: name: Zentner, Andrew R.
name: Semboloni, Elisabetta
name: Dodelson, Scott
name: Eifler, Tim
name: Krause, Elisabeth
name: Hearin, Andrew P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: One of the most pernicious theoretical systematics facing upcoming gravitational lensing surveys is the uncertainty introduced by the effects of baryons on the power spectrum of the convergence field. One method that has been proposed to account for these effects is to allow several additional parameters (that characterize dark matter halos) to vary and to fit lensing data to these halo parameters concurrently with the standard set of cosmological parameters. We test this method. In particular, we use this technique to model convergence power spectrum predictions from a set of cosmological simulations. We estimate biases in dark energy equation of state parameters that would be incurred if one were to fit the spectra predicted by the simulations either with no model for baryons, or with the proposed method. We show that neglecting baryonic effect leads to biases in dark energy parameters that are several times the statistical errors for a survey like the Dark Energy Survey. The proposed method to correct for baryonic effects renders the residual biases in dark energy equation of state parameters smaller than the statistical errors. These results suggest that this mitigation method may be applied to analyze convergence spectra from a survey like the Dark Energy Survey. For significantly larger surveys, such as will be carried out by the Large Synoptic Survey Telescope, the biases introduced by baryonic effects are much more significant. We show that this mitigation technique significantly reduces the biases for such larger surveys, but that a more effective mitigation strategy will need to be developed in order ensure that the residual biases in these surveys fall below the statistical errors.
description: 16 pages, 9 figures. Submitted to Physical Review D. Comments Welcome