cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An investigation of the effectiveness of the use of computer animation on understanding transformations of the complex plane
Creators: name: Bell, Dan K.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 3904
subject: Specialist studies in education

description: There is a trend in mathematics instruction at the college level toward using computers for numerical processing and graphing. This is evident at all levels from remedial and developmental courses to graduate courses with a concentration in elementary courses. By the very nature of the field, computer graphics would seem to be an effective instructional tool in complex analysis. The purpose of this study is to investigate the idea that viewing an animation of a homotopy starting with a set of curves in the complex plane and moving to their images under functions of the complex plane will aid students in understanding those functions. A sample of students was drawn from a course in complex analysis, and separated into two groups, an animation group comprising three subjects and a non-animation group comprising two subjects. In individual sessions the members of the animation group viewed animated graphs as part of instructional exercises, and the members of the other group viewed static pictures as part of the same exercises. There were three sessions for each group, planned to correspond to three sets of complex functions: (1) Linear and quadratic functions; (2) Conformal mappings; and, (3) Roots and poles. In addition to the responses of students to the questions in the exercises, the researcher asked questions about each student's perceptions of their understanding, both in written form and in interviews. Because of the extremely small sample size and the fact that two subjects did not complete the study, the planned quantitative statistical tests were not completed. The basic statistics are included and are presented as qualitative statistics. A qualitative analysis of the raw data from the sessions with the subjects led to two major findings: (1) The effectiveness of the animations is greatest in functions which are not linear. The differences between the groups were very slight for the questions dealing with the linear functions, and were the greatest in the questions dealing with the power functions and functions with multiple poles. (2) All the subjects in the animation group found the animations useful in understanding functions presented to them in class and in assignments. No subjects in the non-animation group found the diagrams helpful in similar circumstances.
CLEARING HOUSE - Urban Forests as Nature-based Solutions (introduction to the H2020 project)
Creators: name: De Vreese, Rik
name: Cheng, Wang
name: Jin, Jiali
name: Davies, Clive
name: Winkel, Georg
Publisher: name: Zenodo
Year: 2020
Subjects: Urban forests
nature-based solutions
urban solutions
urban resilience
tree-based ecosystems

description: Urban forests, as well as parks and trees in public and private spaces, play an important role in addressing environmental, economic and social challenges. We will introduce the variety of “services” urban forests provide to cities and their inhabitants in four different world regions (from Barcelona to Beijing). You will learn about activities taking place in Bonn (the European Forest City 2020). Finally, we will focus on examples of how local governments work together on urban forestry by integrating local stakeholders as part of the CLEARING HOUSE project.
Probing surface charge densities on optical fibers with a trapped ion
Creators: name: Ong, Florian R.
name: Schüppert, Klemens
name: Jobez, Pierre
name: Teller, Markus
name: Ames, Ben
name: Fioretto, Dario A.
name: Friebe, Konstantin
name: Lee, Moonjoo
name: Colombe, Yves
name: Blatt, Rainer
name: Northup, Tracy E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe a novel method to measure the surface charge densities on optical fibers placed in the vicinity of a trapped ion, where the ion itself acts as the probe. Surface charges distort the trapping potential, and when the fibers are displaced, the ion's equilibrium position and secular motional frequencies are altered. We measure the latter quantities for different positions of the fibers and compare these measurements to simulations in which unknown charge densities on the fibers are adjustable parameters. Values ranging from $-10$ to $+50$ e/$μ$m$^2$ were determined. Our results will benefit the design and simulation of miniaturized experimental systems combining ion traps and integrated optics, for example, in the fields of quantum computation, communication and metrology. Furthermore, our method can be applied to any setup in which a dielectric element can be displaced relative to a trapped charge-sensitive particle.
description: 21 pages, 6 figures
Supersymmetric manipulation of quasienergy states. Application to the Berry phase
Creators: name: Samsonov, B. F.
name: Glasser, M. L.
name: Nieto, L. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time-dependent supersymmetry allows one to delete quasienergy levels for time-periodic Hamiltonians and to create new ones. We illustrate this by examining an exactly solvable model related to the simple harmonic oscillator with a time-varying frequency. For an interesting nonharmonic example we present the change of the Berry phase due to a supersymmetry transformation.
description: 4 pages, 2 figures, submitted to PRL
Cymbionotum (Cymbionotum) semirubricum
Creators: name: Azadbakhsh, Saeed
name: Mirmoayedi, Alinaghi
name: Jamali, Samad
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Cymbionotum
Cymbionotum semirubricum

description: Cymbionotum (Cymbionotum) semirubricum (Reitter, 1914)
 Material Examined. Bushehr province, Dalaki env., 1.IV.2016, S. Azadbakhsh leg. & det. (2 specimens).
 Material Examined. Hormozgan province, Bandar Abbas env., Hasan Langi, 12.IV.2016, S. Azadbakhsh leg. & det. (4 specimens).
 Distribution. Algeria, Armenia, Canary Islands, Croatia, France, Greece, Iran, Italy, Morocco, Madeira Archipelago, Spain, and Tunisia. In Iran, this species is known from Bushehr, Kerman, Mazandaran, Sistan va Baluchestan, Razavi Khorasan, Golestan, Khuzestan, and Guilan provinces (Azadbakhsh and Nozari 2015). New province record for Hormozgan.
 Biology. The specimens were collected by light trap.
description: Published as part of Azadbakhsh, Saeed, Mirmoayedi, Alinaghi & Jamali, Samad, 2017, New Faunistic Records of Ground Beetles (Coleoptera: Carabidae) in Southern Iran, pp. 413-418 in The Coleopterists Bulletin 71 (2) on page 414, DOI: 10.1649/0010-065X-71.2.413, http://zenodo.org/record/4836649
The z>4 Quasar Population Observed by Chandra and XMM-Newton
Creators: name: Vignali, C.
name: Brandt, W. N.
name: Schneider, D. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The current status of our Chandra and XMM-Newton project on high-redshift (z>4) quasars is briefly reviewed. We report the main results obtained in the last few years for the detected quasars, along with a few (~10%) intriguing cases where no detection has been obtained with Chandra snapshot observations.
description: 4 pages, to appear in the proceedings of 'Multiwavelength AGN surveys' (Cozumel, December 8-12 2003), ed. R. Maiolino and R. Mujica
Bilinear quark operators in the RI/SMOM scheme at three loops
Creators: name: Kniehl, Bernd A.
name: Veretin, Oleg L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We consider the renormalization of the matrix elements of the bilinear quark operators $\barψψ$, $\barψγ_μψ$, and $\barψσ_{μν}ψ$ at next-to-next-to-next-to-leading order in QCD perturbation theory at the symmetric subtraction point. This allows us to obtain conversion factors between the $\overline{\rm MS}$ scheme and the regularization invariant symmetric momentum subtraction (RI/SMOM) scheme. The obtained results can be used to reduce the errors in determinations of quark masses from lattice QCD simulations. The results are given in Landau gauge.
description: 9 pages, 1 figure, minor changes, matches journal version
Synthesis of 1,4- and 2,6-diazabenzanthrones as novel antimicrobial compounds
Creators: name: Biba, Edmond
Publisher: name: American University
Year: 2023

description: In recognition of the antifungal activity of Sampangine (1,6-diazabenzanthrone) the preparation of other aza-analogs of benzanthrone was addressed. The syntheses of 3-phenyl-7H-naphtho [1,2,3-de][2,6]naphthyridine and 9,10-dimethyl-7H-naphtho[3,2,1-de)[1,6]naphthyridin-7-one are given. The 3-phenyl-7H-naphtho[1,2,3-de][2,6]-naphthyridine was synthesized via a linear synthesis utilizing the previously reported 1-chloro-2,6-naphthyridine as an intermediate. The optimization of the literature synthesis of this compound is given. The cyanation of 2,6-naphthyridine, which represented the first reported cyanation of this ring system, was studied and optimized under various conditions. The next synthetic step involved the Grignard reaction of this nitrogen containing heteroaromatic nitrile with phenyl magnesium bromide. Three major products, 1-benzoyl-2,6-naphthyridine, 1-benzoyl-5-phenyl-2,6-naphthyridine and 1-cyano-5-phenyl-2,6-naphthyridine, were obtained. The last synthetic step involved a peri ring closure of a diaryl ketone, known as the Scholl reaction. This represented the first account of the Scholl reaction applied to nitrogen containing heterocyclic compounds. The product of the Scholl reaction was a reduced species which supports a reductive environment of the reaction. The structures of all of the products were characterized by spectroscopic techniques. The synthesis of the 9,10-dimethyl-7H-naphtho[3,2,1- de][1,6]naphthyridin-7-one was accomplished in a overall process of eight steps starting from 2,5-dimethoxybenzaldehyde. A crucial intermediate of the synthesis was the previously reported 1,7,8-trimethylbenzo[ g]isoquinoline. It was prepared via a Diels-Alder reaction of 1-methylisoquinoline-5,8-dione with 2,3-dimethyl-1,3-butadiene. The 1,7,8-trimethylbenzo[g]isoquinoline was easily converted into the 9,10-dimethyl-7H-naphtho[3,2,1- de][1,6]naphthyridin-7-one with a satisfactory yield. This work represented the first preparation of 1 -methylisoquinoline-5,8-dione, 1,7,8-trimethylbenzo[ g]isoquinoline and 9,10-dimethyl-7H-naphtho[3,2,1- de][1,6]naphthyridin-7-one. Their structures were characterized by combination of the spectroscopic techniques. Some of the newly prepared compounds, namely 1-benzoyl-2,6-naphthyridine, 3 phenyl-7H-naphtho[1,2,3-de][2,6]naphthyridine and 9,10-dimethyl-7H-naphtho[3,2,1-de][1,6] naphthyridin-7-one, were qualitatively tested against fungi Candida albicans and Aspergillus fumigatus. All of them showed fungicidal activity against the tested organisms. The quantitative evaluation of the inhibitory effect of the 9,10-dimethyl-7H-naphtho[3,2,1- de][1,6]naphthyridin-7-one is reported. The minimum inhibitory concentration was less than 1 mug/ml which fell in the range of the well known antifungal agent Amphotericin B. Therefore the newly prepared compounds may be useful as leads in the quest of new antifungal agents.
Additional file 1 of Topical treatment with SPHINGOLIPIDS and GLYCOSAMINOGLYCANS for canine atopic dermatitis
Creators: name: Marsella, Rosanna
name: Segarra, Sergi
name: Ahrens, Kim
name: Alonso, Cristina
name: Lluís Ferrer
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology

description: Additional file 1. Lipidomics analysis. This additional file explains the lipidomics analysis in more detail.
Assessing the Significance of Directed and Multivariate Measures of Linear Dependence Between Time Series
Creators: name: Cliff, Oliver M.
name: Novelli, Leonardo
name: Fulcher, Ben D.
name: Shine, James M.
name: Lizier, Joseph T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Neurons and Cognition (q-bio.NC)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Inferring linear dependence between time series is central to our understanding of natural and artificial systems. Unfortunately, the hypothesis tests that are used to determine statistically significant directed or multivariate relationships from time-series data often yield spurious associations (Type I errors) or omit causal relationships (Type II errors). This is due to the autocorrelation present in the analysed time series -- a property that is ubiquitous across diverse applications, from brain dynamics to climate change. Here we show that, for limited data, this issue cannot be mediated by fitting a time-series model alone (e.g., in Granger causality or prewhitening approaches), and instead that the degrees of freedom in statistical tests should be altered to account for the effective sample size induced by cross-correlations in the observations. This insight enabled us to derive modified hypothesis tests for any multivariate correlation-based measures of linear dependence between covariance-stationary time series, including Granger causality and mutual information with Gaussian marginals. We use both numerical simulations (generated by autoregressive models and digital filtering) as well as recorded fMRI-neuroimaging data to show that our tests are unbiased for a variety of stationary time series. Our experiments demonstrate that the commonly used $F$- and $χ^2$-tests can induce significant false-positive rates of up to $100\%$ for both measures, with and without prewhitening of the signals. These findings suggest that many dependencies reported in the scientific literature may have been, and may continue to be, spuriously reported or missed if modified hypothesis tests are not used when analysing time series.
description: 27 pages, 14 figures, final submission to Phys Rev. Research editors (before copyediting)
On Geometry of Information Flow for Causal Inference
Creators: name: Surasinghe, Sudam
name: Bollt, Erik M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Computational Geometry (cs.CG)
subject: Dynamical Systems (math.DS)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Causal inference is perhaps one of the most fundamental concepts in science, beginning originally from the works of some of the ancient philosophers, through today, but also weaved strongly in current work from statisticians, machine learning experts, and scientists from many other fields. This paper takes the perspective of information flow, which includes the Nobel prize winning work on Granger-causality, and the recently highly popular transfer entropy, these being probabilistic in nature. Our main contribution will be to develop analysis tools that will allow a geometric interpretation of information flow as a causal inference indicated by positive transfer entropy. We will describe the effective dimensionality of an underlying manifold as projected into the outcome space that summarizes information flow. Therefore contrasting the probabilistic and geometric perspectives, we will introduce a new measure of causal inference based on the fractal correlation dimension conditionally applied to competing explanations of future forecasts, which we will write $GeoC_{y\rightarrow x}$. This avoids some of the boundedness issues that we show exist for the transfer entropy, $T_{y\rightarrow x}$. We will highlight our discussions with data developed from synthetic models of successively more complex nature: then include the Hénon map example, and finally a real physiological example relating breathing and heart rate function. Keywords: Causal Inference; Transfer Entropy; Differential Entropy; Correlation Dimension; Pinsker's Inequality; Frobenius-Perron operator.
Additional file 1 of Systematic review of statistical methods for safety data in malaria chemoprevention in pregnancy trials
Creators: name: Patson, Noel
name: Mavuto Mukaka
name: Otwombe, Kennedy N.
name: Kazembe, Lawrence
name: Mathanga, Don P.
name: Mwapasa, Victor
name: Alinune N. Kabaghe
name: Eijkemans, Marinus J. C.
name: Laufer, Miriam K.
name: Chirwa, Tobias
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. PRISMA 2009 checklist for the systematic review.
Locating ergostar models in parameter space
Creators: name: Tsokaros, Antonios
name: Ruiz, Milton
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently, we have shown that dynamically stable ergostar solutions (equilibrium neutron stars that contain an ergoregion) with a compressible and causal equation of state exist [A. Tsokaros, M. Ruiz, L. Sun, S. L. Shapiro, and K. Uryū, Phys. Rev. Lett. 123, 231103 (2019)]. These stars are hypermassive, differentially rotating, and highly compact. In this work, we make a systematic study of equilibrium models in order to locate the position of ergostars in parameter space. We adopt four equations of state that differ in the matching density of a maximally stiff core. By constructing a large number of models both with uniform and differential rotation of different degrees, we identify the parameters for which ergostars appear. We find that the most favorable conditions for the appearance of dynamically stable ergostars are a significant finite density close to the surface of the star (i.e., similar to self-bound quark stars) and a small degree of differential rotation.
description: 8 pages, 3 figures. Matches published version
Application of dictionary learning to denoise LIGO's blip noise transients
Creators: name: Torres-Forné, Alejandro
name: Cuoco, Elena
name: Font, José A.
name: Marquina, Antonio
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Data streams of gravitational-wave detectors are polluted by transient noise features, or "glitches", of instrumental and environmental origin. In this work, we investigate the use of total-variation methods and learned dictionaries to mitigate the effect of those transients in the data. We focus on a specific type of transient, "blip" glitches, as this is the most common type of glitch present in the LIGO detectors and their waveforms are easy to identify. We randomly select 80 blip glitches scattered in the data from advanced LIGO's O1 run, as provided by the citizen-science project Gravity Spy. Our results show that dictionary-learning methods are a valid approach to model and subtract most of the glitch contribution in all cases analyzed, particularly at frequencies below $\sim 1$ kHz. The high-frequency component of the glitch is best removed when a combination of dictionaries with different atom length is employed. As a further example, we apply our approach to the glitch visible in the LIGO-Livingston data around the time of merger of binary neutron star signal GW170817, finding satisfactory results. This paper is the first step in our ongoing program to automatically classify and subtract all families of gravitational-wave glitches employing variational methods.
Bembidion (Peryphus) persicum Menetries 1832
Creators: name: Azadbakhsh, Saeed
name: Mirmoayedi, Alinaghi
name: Jamali, Samad
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Bembidion
Bembidion persicum

description: Bembidion (Peryphus) persicum Ménétriés, 1832
 Material Examined. Hormozgan province, Roodan River, 29.III.2016, S. Azadbakhsh leg. & det. (2 specimens).
 Distribution. Armenia, Georgia, Iran, Kyrgyzstan, Moldavia, Russia (southern Russian plains), Tadzhikistan, Turkey, and Uzbekistan. This species was previously cited from the provinces Mazandaran, Chahar Mahal va Bakhtiari, Guilan, Kerman, and Tehran (Azadbakhsh and Nozari 2015). New province record for Hormozgan.
 Biology. The specimens were collected by hand from under stones near the bank of a river.
description: Published as part of Azadbakhsh, Saeed, Mirmoayedi, Alinaghi & Jamali, Samad, 2017, New Faunistic Records of Ground Beetles (Coleoptera: Carabidae) in Southern Iran, pp. 413-418 in The Coleopterists Bulletin 71 (2) on page 416, DOI: 10.1649/0010-065X-71.2.413, http://zenodo.org/record/4836649
Calculus on the Sierpinski Gasket I: Polynomials, Exponentials and Power Series
Creators: name: Needleman, Jonathan
name: Strichartz, Robert S.
name: Teplyaev, Alexander
Publisher: name: arXiv
Year: 2003
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 28A80

description: We study the analog of power series expansions on the Sierpinski gasket, for analysis based on the Kigami Laplacian. The analog of polynomials are multiharmonic functions, which have previously been studied in connection with Taylor approximations and splines. Here the main technical result is an estimate of the size of the monomials analogous to x^n/n!. We propose a definition of entire analytic functions as functions represented by power series whose coefficients satisfy exponential growth conditions that are stronger than what is required to guarantee uniform convergence. We present a characterization of these functions in terms of exponential growth conditions on powers of the Laplacian of the function. These entire analytic functions enjoy properties, such as rearrangement and unique determination by infinite jets, that one would expect. However, not all exponential functions (eigenfunctions of the Laplacian) are entire analytic, and also many other natural candidates, such as the heat kernel, do not belong to this class. Nevertheless, we are able to use spectral decimation to study exponentials, and in particular to create exponentially decaying functions for negative eigenvalues.
Consonance and dissonance between educational outcomes and professional practice in physical therapy: An analysis of perceptions
Creators: name: Davis, Nicceta
Publisher: name: American University
Year: 2023

description: There is dissonance between the perceptions of physical therapist educators and physical therapist practitioners regarding physical therapy education and professional practice. The purpose of this study is to examine these perceptions to determine where consonance and dissonance exist between the educational outcomes and professional practice. Survey questionnaires were mailed to 334 physical therapist educators and 400 physical therapy practitioners. Data were collected from 38% (N = 128) and 37% practitioners (N = 148) to answer the following three research questions: Which educational outcomes are most important for professional practice? How well prepared are graduates to meet the practice expectations of the educational outcomes?; What learning experiences or environments are most effective for achieving the educational outcomes? Practitioners were also asked to characterize their current level of confidence in professional practice. Descriptive statistics, cross-tabulations, Chi-square, and Mann-Whitney U tests revealed minimal differences between educators' and practitioners' perceptions of the most important educational outcomes for professional practice. There were, however, significant differences between educators, and practitioners' perceptions on how well prepared graduates are for practice upon graduation, and the loci for most effective learning. Educators perceived graduates to be better prepared for practice than practitioners reported. Educators also identified formal education, i.e., classroom, labs, and clinical education, as the most effective experiences and loci for achieving educational outcomes. In contrast, practitioners reported work experiences, continuing education, and other life experiences as the most effective experiences for achieving educational outcomes. Despite the Commission on Accreditation in Physical Therapy Education and educational programs' efforts to create greater consonance between physical therapists, education and practice, dissonance still exists. Collaborative efforts between educators and practitioners in curriculum assessment, clinical education, and helping graduates transition from the classroom to the clinic are needed to ensure greater consonance between education and practice.
Computing quantum dynamics in the semiclassical regime
Creators: name: Lasser, Caroline
name: Lubich, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65-02, 81-02, 35Q41

description: The semiclassically scaled time-dependent multi-particle Schrödinger equation describes, inter alia, quantum dynamics of nuclei in a molecule. It poses the combined computational challenges of high oscillations and high dimensions. This paper reviews and studies numerical approaches that are robust to the small semiclassical parameter. We present and analyse variationally evolving Gaussian wave packets, Hagedorn's semiclassical wave packets, continuous superpositions of both thawed and frozen Gaussians, and Wigner function approaches to the direct computation of expectation values of observables. Making good use of classical mechanics is essential for all these approaches. The arising aspects of time integration and high-dimensional quadrature are also discussed.
description: 166 pages. Prepared for Acta Numerica 2020. (Version 2: additional references and some corrections to Version 1.)
Consonance and dissonance between educational outcomes and professional practice in physical therapy: An analysis of perceptions
Creators: name: Davis, Nicceta
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3903
subject: Education systems
classificationCode: 3904
subject: Specialist studies in education

description: There is dissonance between the perceptions of physical therapist educators and physical therapist practitioners regarding physical therapy education and professional practice. The purpose of this study is to examine these perceptions to determine where consonance and dissonance exist between the educational outcomes and professional practice. Survey questionnaires were mailed to 334 physical therapist educators and 400 physical therapy practitioners. Data were collected from 38% (N = 128) and 37% practitioners (N = 148) to answer the following three research questions: Which educational outcomes are most important for professional practice? How well prepared are graduates to meet the practice expectations of the educational outcomes?; What learning experiences or environments are most effective for achieving the educational outcomes? Practitioners were also asked to characterize their current level of confidence in professional practice. Descriptive statistics, cross-tabulations, Chi-square, and Mann-Whitney U tests revealed minimal differences between educators' and practitioners' perceptions of the most important educational outcomes for professional practice. There were, however, significant differences between educators, and practitioners' perceptions on how well prepared graduates are for practice upon graduation, and the loci for most effective learning. Educators perceived graduates to be better prepared for practice than practitioners reported. Educators also identified formal education, i.e., classroom, labs, and clinical education, as the most effective experiences and loci for achieving educational outcomes. In contrast, practitioners reported work experiences, continuing education, and other life experiences as the most effective experiences for achieving educational outcomes. Despite the Commission on Accreditation in Physical Therapy Education and educational programs' efforts to create greater consonance between physical therapists, education and practice, dissonance still exists. Collaborative efforts between educators and practitioners in curriculum assessment, clinical education, and helping graduates transition from the classroom to the clinic are needed to ensure greater consonance between education and practice.
The typing of PCR-amplified DNA by high-performance liquid chromatography
Creators: name: Devaney, Joseph Michael
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 3401
subject: Analytical chemistry

description: Human identification through DNA analysis has undergone tremendous changes since the first criminal conviction in the United States using DNA evidence in the Florida v. Andrews case of 1987. DNA is commonly used as forensic evidence to link suspects to crimes, exclude falsely accused suspects, reveal serial crimes, distinguish copycat crimes, identify the remains of a victim, and reconstruct accidents. In fact; DNA analysis is used in approximately 10,000 new criminal investigations annually. With the advent and use of the polymerase chain reaction (PCR) as a means to increase the copy number of specific DNA sequences, the use of DNA analysis as evidentiary material will continue to increase. Currently, gel electrophoresis is the DNA analysis method most commonly used. However, gel electrophoresis is a slow technique that typically takes more than two hours to complete, and once the electrophoresis is complete, the results can take days to process. In this dissertation, high performance liquid chromatography (BPLC) is used as a rapid DNA sizing/typing method. The chromatographic conditions for the separation of dsDNA were optimized. Using the optimal conditions for the separation of dsDNA, PCR products were sized using restriction enzyme fragments. In addition, a typing method for PCR products from the HUMTHO1 locus was accomplished. Finally, PCR products from different loci were multiplexed and typed using HPLC.
Row-Factorization Matrices in Arf Numerical Semigroups and Defining Ideals
Creators: name: Süer, Meral
name: Yeşil, Mehmet
Publisher: name: arXiv
Year: 2022
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M14, 20M20, 20M25, 13H10

description: In this paper, we investigate the row-factorization matrices of Arf numerical semigroups, and we provide the full list of such matrices of certain Arf numerical semigroups. We use the information of row-factorization matrices to detect the generic nature and to find generators of the defining ideals.
The typing of PCR-amplified DNA by high-performance liquid chromatography
Creators: name: Devaney, Joseph Michael
Publisher: name: American University
Year: 2023

description: Human identification through DNA analysis has undergone tremendous changes since the first criminal conviction in the United States using DNA evidence in the Florida v. Andrews case of 1987. DNA is commonly used as forensic evidence to link suspects to crimes, exclude falsely accused suspects, reveal serial crimes, distinguish copycat crimes, identify the remains of a victim, and reconstruct accidents. In fact; DNA analysis is used in approximately 10,000 new criminal investigations annually. With the advent and use of the polymerase chain reaction (PCR) as a means to increase the copy number of specific DNA sequences, the use of DNA analysis as evidentiary material will continue to increase. Currently, gel electrophoresis is the DNA analysis method most commonly used. However, gel electrophoresis is a slow technique that typically takes more than two hours to complete, and once the electrophoresis is complete, the results can take days to process. In this dissertation, high performance liquid chromatography (BPLC) is used as a rapid DNA sizing/typing method. The chromatographic conditions for the separation of dsDNA were optimized. Using the optimal conditions for the separation of dsDNA, PCR products were sized using restriction enzyme fragments. In addition, a typing method for PCR products from the HUMTHO1 locus was accomplished. Finally, PCR products from different loci were multiplexed and typed using HPLC.
Random Embeddings of Graphs: The Expected Number of Faces in Most Graphs is Logarithmic
Creators: name: Loth, Jesse Campion
name: Halasz, Kevin
name: Masařík, Tomáš
name: Mohar, Bojan
name: Šámal, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: G.2.2
subject: 05C10

description: A random 2-cell embedding of a connected graph $G$ in some orientable surface is obtained by choosing a random local rotation around each vertex. Under this setup, the number of faces or the genus of the corresponding 2-cell embedding becomes a random variable. Random embeddings of two particular graph classes, those of a bouquet of $n$ loops and those of $n$ parallel edges connecting two vertices, have been extensively studied and are well-understood. However, little is known about more general graphs. The results of this paper explain why Monte Carlo methods cannot work for approximating the minimum genus of graphs.
 In his breakthrough work [Permutation-partition pairs, JCTB 1991], Stahl developed the foundation of "random topological graph theory". Most of his results have been unsurpassed until today. In our work, we analyze the expected number of faces of random embeddings (equivalently, the average genus) of a graph $G$. It was very recently shown that for any graph $G$, the expected number of faces is at most linear. We show that the actual expected number of faces $F(G)$ is almost always much smaller. In particular, we prove:
 1) $\frac{1}{2}\ln n - 2 < \mathbb{E}[F(K_n)] \le 3.65 \ln n +o(1)$.
 2) For random graphs $G(n,p)$ ($p=p(n)$), we have $\mathbb{E}[F(G(n,p))] \le \ln^2 n+\frac{1}{p}$.
 3) For random models $B(n,Δ)$ containing only graphs, whose maximum degree is at most $Δ$, we obtain stronger bounds by showing that the expected number of faces is $Θ(\log n)$.
description: Accepted at the 35th ACM-SIAM Symposium on Discrete Algorithms (SODA 2024). The submission also contains sources and data of the computation described in the paper. 55 pages, 11 figures
Influencing policy at the top of the federal bureaucracy: Behavior, attitudes and gender in the Senior Executive Service
Creators: name: Dolan, Julie Anne
Publisher: name: American University
Year: 2023

description: This dissertation, using an original survey instrument administered to a random sample of 500 male and 500 female Senior Executive Service (SES) employees, examines the differences in responsibilities and attitudes of top-ranking federal career executives. First, I demonstrate that male and female SES members have sufficient discretion to influence policymaking in their organizations. Sample respondents indicate how frequently they perform various activities and how much power these activities give them within their agencies. Senior Executive Service members are clearly involved in many stages of policy formulation and implementation, have substantial contact with executive branch colleagues in other agencies and departments (and noticeably less contact with members of Congress, congressional staff, OMB and other White House staff), and Meld influence over budgetary and personnel matters within their organizations. Further, and contrary to expectations, women in the SES exhibit responsibility levels and perceived powers at least as high as men. Second, I investigate whether women in top bureaucratic positions provide representation for women in the American public. Overall, the evidence suggests that senior executive women are likely to produce policy which better reflects the needs and interests of women in the population. They show more support for women's issues such as family leave, affirmative action, child care, and women's health. In addition, differences in the spending priorities of SES men and women in my survey reflect differences in the priorities of men and women in the general public, as shown in the 1992 and 1994 American National Election Studies. These findings suggest that federal policy should better reflect women's distinct interests and priorities with greater numbers of women in elite administrative positions in the federal government. These findings also suggest additional avenues for future research. The scholarly inquiry into SES members' job responsibilities should stimulate more detailed research into individual administrative behavior and how these career executives contribute to federal policy-making and the attitudinal findings suggest further research on elite women's distinct contributions to federal governance.
Robust Instability Analysis with Application to Neuronal Dynamics
Creators: name: Hara, Shinji
name: Iwasaki, Tetsuya
name: Hori, Yutaka
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: This paper is concerned with robust instability analysis of linear feedback systems subject to a dynamic uncertainty. The work is motivated by, and provides a basic foundation for, a more challenging problem of analyzing persistence of oscillations in nonlinear dynamical systems. We first formalize the problem for SISO LTI systems by introducing a notion of the robust instability radius (RIR). We provide a method for calculating the RIR exactly for a certain class of systems and show that it works well for a class of second order systems. This result is applied to the FitzHugh-Nagumo model for neuronal dynamics, and the effectiveness is confirmed by numerical simulations, where we properly care for the change of the equilibrium point.
A physicist's view of stellar dynamics: dynamical instability of stellar systems
Creators: name: Gurzadyan, V. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I argue that the widely adopted framework of stellar dynamics survived since 1940s, is not fitting the current knowledge on non-linear systems. Borrowed from plasma physics when several fundamental features of perturbed non-linear systems were unknown, that framework ignores the difference in the role of perturbations in two different classes of systems, in plasma with Debye screening and gravitating systems with no screening. Now, when the revolutionary role of chaotic effects is revealed even in planetary dynamics i.e. for nearly integrable systems, one would expect that for stellar systems, i.e. non-integrable systems, their role have to be far more crucial. Indeed, ergodic theory tools already enabled to prove that spherical stellar systems are exponentially instable due to N-body interactions, while the two-body encounters, contrary to existing belief, are not the dominating mechanism of their relaxation. Chaotic effects distinguish morphological and other properties of galaxies. Using the Ricci curvature criterion, one can also show that a central massive object (nucleus) makes the N-body gravitating system more instable (chaotic), while systems with double nuclei are even more instable than those with a single one.
description: Talk delivered at Joint Discussion 11, IAU XXVth General Assembly, Sydney, July,2003, to appear in Highlights of Astronomy, vol.13
A Theory of Vertical Fiscal Imbalance
Creators: name: Boadway, Robin
name: Tremblay, Jean-Francois
name: Boadway, Robin
name: Tremblay, Jean-Francois
Publisher: name: Unknown
Year: 2006
Subjects: subject: Demand and Price Analysis
subject: Financial Economics
subject: Vertical fiscal imbalance
subject: federal-regional transfers
subject: commitment
subject: fiscal externalities

description: This paper examines how sequential decision-making by two levels of government can result in vertical fiscal imbalances (VFI). Federal-regional transfers serve to equalize the marginal cost of public funds between regions hit by different shocks. The optimal vertical fiscal gap minimizes the efficiency cost of taxation in the federation as a whole. The analysis shows how the existence of vertical fiscal externalities, leading regional governments to overprovide public goods, can induce the federal government to create a VFI by selecting transfers that differ from the optimal fiscal gap. When the federal government can commit to its policies before regional governments select their level of expenditures, the VFI will generally be negative. In the absence of commitment, the equilibrium transfer is unambiguously larger than the optimal fiscal gap, resulting in a positive VFI. In an intertemporal setting, the VFI has implications for the sharing of debt between the federal and regional governments.
Quantum operation, quantum Fourier transform and semi-definite programming
Creators: name: Duan, Runyao
name: Ji, Zhengfeng
name: Feng, Yuan
name: Ying, Mingsheng
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze a class of quantum operations based on a geometrical representation of $d-$level quantum system (or qudit for short). A sufficient and necessary condition of complete positivity, expressed in terms of the quantum Fourier transform, is found for this class of operations. A more general class of operations on qudits is also considered and its completely positive condition is reduced to the well-known semi-definite programming problem.
description: 16 pages
title: A Study of the Impact of Sex and Gender upon the Perceptions and Responses of Science Teachers
Creators: name: Spear, Margaret Ann
Publisher: name: The Open University
Year: 1985

description: The study investigated the role that science teachers could play in depressing the aspirations and attainment of girls studying science. Particular attention was directed to teachers’ opinions, beliefs, attitudes and expectations. It was hypothesized that teachers (a) perceive science to be masculine, (b) perceive differences between boys and girls which could affect science achievement, (c) hold higher expectations for boys than for girls, (d) assess the work, cognitive and affective attributes of boys to be superior to those of girls. The hypotheses were tested using attitude and rating scales, and a marking exercise. A total of 766 science teachers were involved in the study. In the marking exercise, 339 science teachers evaluated samples of pupils’ work. The work Samples and their authors were rated on a number of variables. However, pupil sex was varied so that the same piece of work was presented to half of the teachers as being the work of a girl and to the remaining teachers as being the work of a boy. Work attributed to a boy was generally rated higher for scientific accuracy and understanding of principles than identical work attributed to a girl. Furthermore, boys were judged to have significantly more aptitude for science, more favourable attitudes towards science, greater interest in science, and to be more suitable for undertaking further physical science courses. Findings from the whole study indicate that teachers do (a) perceive science to be masculine, (b) perceive differences between the interests, aptitudes and future roles of girls and boys, (c) hold sex differentiated expectations, (d) differentially value the work and personal characteristics of boys and girls. In conclusion, the beliefs and expectations of some science teachers probably adversely affect girls’ attitudes towards science and impede their academic progress. It is recommended that teacher education must include material that enables teachers to understand and eliminate sexism in their teaching.
Evaluating Search and Matching Models Using Experimental Data
Creators: name: Lise, Jeremy
name: Seitz, Shannon
name: Smith, Jeffrey
name: Lise, Jeremy
name: Seitz, Shannon
name: Smith, Jeffrey
Publisher: name: Unknown
Year: 2006
Subjects: subject: Financial Economics
subject: Calibration
subject: equilibrium search and matching models
subject: policy experiments
subject: Self-Sufficiency Project
subject: welfare
subject: social experiments

description: This paper introduces an innovative test of search and matching models using the exogenous variation available in experimental data. We take an off-the-shelf Pissarides matching model and calibrate it to data on the control group from a randomized social experiment. We then simulate a program group from a randomized experiment within the model. As a measure of the performance of the model, we compare the outcomes of the program groups from the model and from the randomized experiment. We illustrate our methodology using the Canadian Self-Sufficiency Project (SSP), a social experiment providing a time limited earnings supplement for Income Assistance recipients who obtain full time employment within a 12 month period. We find two features of the model are consistent with the experimental results: endogenous search intensity and exogenous job destruction. We find mixed evidence in support of the assumption of fixed hours of labor supply. Finally, we find a constant job destruction rate is not consistent with the experimental data in this context.