cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Watchman routes in the presence of convex obstacles
Creators: name: Lombardo, Rocky Joseph
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: This thesis deals with the problem of computing shortest watchman routes in the presence of polygonal obstacles. Important recent results on watchman route problems are surveyed. An {dollar}O(n\sp3){dollar} algorithm for computing a shortest watchman route in the presence of a pair of convex obstacles is presented. Important open problems related to watchman route problems are discussed.
Forment Giralt, Eudaldo, Persona y Modo substancial. Ed. PPU (Promociones Publicaciones Universitárias). 1 vol. de 240 ps., 190x120. Barcelona s/d
Creators: name: Freire, António
Publisher: name: Theologica
Year: 1985

description: Theologica, v. 20 n. 1-4 (1985)
Self-learning kinetic Monte Carlo model for arbitrary surface orientations
Creators: name: Latz, Andreas
name: Brendel, Lothar
name: Wolf, Dietrich E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: While the self-learning kinetic Monte Carlo (SLKMC) method enables the calculation of transition rates from a realistic potential, implementations of it were usually limited to one specific surface orientation. An example is the fcc (111) surface in Latz et al. 2012, J. Phys.: Condens. Matter 24, 485005. This work provides an extension by means of detecting the local orientation, and thus allows for the accurate simulation of arbitrarily shaped surfaces. We applied the model to the diffusion of Ag monolayer islands and voids on a Ag(111) and Ag(001) surface, as well as the relaxation of a three-dimensional spherical particle.
Time-of-flight patterns of ultra-cold bosons in optical lattices in various Abelian artificial magnetic field gauges
Creators: name: Polak, T. P.
name: Zaleski, T. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We calculate the time-of-flight patterns of strongly interacting bosons confined in two-dimensional square lattice in the presence of an artificial magnetic field using quantum rotor model that is inherently combined with the Bogolyubov approach. We consider various geometries of the magnetic flux, which are expected to be realizable, or have already been implemented in experimental settings. The flexibility of the method let us to study cases of the artificial magnetic field being uniform, staggered or forming a checkerboard configuration. Effects of additional temporal modulation of the optical potential that results from application of Raman lasers driving particle transitions between lattice sites are also included. The presented time-of-flight patterns may serve as a verification of chosen gauge in experiments, but also provide important hints on unconventional, non-zero momentum condensates, or possibility of observing graphene-like physics resulting from occurrence of Dirac cones in artificial magnetic fields in systems of ultra-cold bosons in optical lattices. Also, we elucidate on differences between effects of magnetic field in solids and the artificial magnetic field in optical lattices, which can be controlled on much higher level leading to effects not possible in condensed matter physics.
description: 10 pages, 10 figures
Separation and identification of difluorobenzoic acids by Hplc/Ms
Creators: name: Wu, Zhen
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: A method was developed for the separation and identification of difluorobenzoic acids by high performance liquid chromatography/mass spectrometry (HPLC/MS) with a particle beam interface (PB). The development of this method included the optimization of the mobile phase and MS parameters for the best separation and detection of the analytes. A performance evaluation procedure for PB HPLC/MS operation was established. Ionization control and ion pairing techniques were employed in an attempt to achieve the chromatographic separation. Although the complete separation of all six isomers was not achieved, the combination of mass spectral detector with liquid chromatography allowed qualitative identification of all analytes; The fragmentation mechanisms of the benzoic acid involve hydroxyl H/ortho H scrambling. This mechanism proposes that the carboxyl hydrogen and the ortho hydrogens of benzoic acids undergo partial exchange, and is used to suggest the formation of the m/e 123 ion formed during the fragmentation of the difluorobenzoic acids.
Systemic delay propagation in the US airport network
Creators: name: Fleurquin, Pablo
name: Ramasco, Jose J.
name: Eguiluz, Victor M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Technologically driven transport systems are characterized by a networked structure connecting operation centers and by a dynamics ruled by pre-established schedules. Schedules impose serious constraints on the timing of the operations, condition the allocation of resources and define a baseline to assess system performance. Here we study the performance of an air transportation system in terms of delays. Technical, operational or meteorological issues affecting some flights give rise to primary delays. When operations continue, such delays can propagate, magnify and eventually involve a significant part of the network. We define metrics able to quantify the level of network congestion and introduce a model that reproduces the delay propagation patterns observed in the U.S. performance data. Our results indicate that there is a non-negligible risk of systemic instability even under normal operating conditions. We also identify passenger and crew connectivity as the most relevant internal factor contributing to delay spreading.
description: 18 pages
CDM and Baryons as Distinct Fluids in a Linear Approximation for the Growth of Structure
Creators: name: De, Soma
name: Dent, James B.
name: Krauss, Lawrence M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A single fluid approximation which treats perturbations in baryons and dark matter as equal has sometimes been used to calculate the growth of linear matter density perturbations in the Universe. We demonstrate that properly accounting for the separate growth of baryon and dark matter fluctuations can change some predictions of structure formation in the linear domain in a way that can alter conclusions about the consistency between predictions and observations for $Λ$CDM models versus modified gravity scenarios . Our results may also be useful for 21cm tomography constraints on alternative cosmological models for the formation of large scale structure.
description: 6 pages, 4 figures, submitted to PRD
Hybridization of Otsu Method and Median Filter for Color Image Segmentation
Creators: name: Jassim, Firas Ajil
name: Altaani, Fawzi H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this article a novel algorithm for color image segmentation has been developed. The proposed algorithm based on combining two existing methods in such a novel way to obtain a significant method to partition the color image into significant regions. On the first phase, the traditional Otsu method for gray channel image segmentation were applied for each of the R,G, and B channels separately to determine the suitable automatic threshold for each channel. After that, the new modified channels are integrated again to formulate a new color image. The resulted image suffers from some kind of distortion. To get rid of this distortion, the second phase is arise which is the median filter to smooth the image and increase the segmented regions. This process looks very significant by the ocular eye. Experimental results were presented on a variety of test images to support the proposed algorithm.
description: 6 pages, 7 figures
Tail risk inference via expectiles in heavy-tailed time series
Creators: name: Davison, A. C.
name: Padoan, S. A.
name: Stupfler, G.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Computational Biology

description: Expectiles define the only law-invariant, coherent and elicitable risk measure apart from the expectation. The popularity of expectile-based risk measures is steadily growing and their properties have been studied for independent data, but further results are needed to establish that extreme expectiles can be applied with the kind of dependent time series models relevant to finance. In this paper we provide a basis for inference on extreme expectiles and expectile-based marginal expected shortfall in a general β-mixing context that encompasses ARMA and GARCH models with heavy-tailed innovations. Our methods allow the estimation of marginal (pertaining to the stationary distribution) and dynamic (conditional on the past) extreme expectile-based risk measures. Simulations and applications to financial returns show that the new estimators and confidence intervals greatly improve on existing ones when the data are dependent.
Alvira, Tomás - Clavell, Luis - Melendo, Tomás, Metafísica. Ed. EUNSA. 1 vol. de 250 ps., 215x145. Pamplona 1984
Creators: name: Paula, Manuel António De
Publisher: name: Theologica
Year: 1985

description: Theologica, v. 20 n. 1-4 (1985)
Analogue Film, Ghostly Ontologies and Fairy-tale in Bella e perduta and Lazzaro felice
Creators: name: Della Fontana, Lucia
Publisher: name: Between
Year: 2022

description: As the ecological crisis intensifies, the blurring of boundaries between the natural and the artificial is becoming increasingly obvious. Therefore, the question of the simulacrum, as it was posed by Baudrillard and the postmodern debate, is now being re-opened and signified. In the two Italian films Bella e perduta [Lost and Beautiful] (2015) and Lazzaro felice [Happy as Lazzaro] (2018), the impossibility of establishing a distinction between nature and culture, virtual and real, human and non-human finds expression in a cinematographic form. In these films, the clash is no longer located between reality and hyperreality but in a phantasmatic dialectic that rediscovers the value of the biological body by placing it in a network of historical, social and technological relations. Starting from the organic element, the two films unsettle the epistemological and cognitive frontiers of modernity by addressing the filmic support, the ontological status of the characters and the choice of narrative genre.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Kinetic theory of spatially homogeneous systems with long-range interactions: III. Application to power-law potentials, plasmas, stellar systems, and to the HMF model
Creators: name: Chavanis, Pierre-Henri
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We apply the general results of the kinetic theory of systems with long-range interactions to particular systems of physical interest. We consider repulsive and attractive power-law potentials of interaction r^{-γ} with γγ_c= (d-1)/2, strong collisions must be taken into account and the evolution of the system is governed by the Boltzmann equation or by a modified Landau equation; for γ
Remades and their Sociospace in China Miéville’s Bas-Lag Trilogy
Creators: name: Del Grazia, Camilla
Publisher: name: Between
Year: 2022

description: The aim of the present paper is to consider Remades (posthuman figures who populate China Miéville’s “Bas-Lag trilogy”) as simulacra of their social milieu, highlighting the interconnection of power and economic systems which shapes the “remaking” process and ultimately the position of Remades in society. Two methodological approaches are applied to the analysis. The first draws from Halberstam, Livingston and Micali to account for the “posthumanity” of Remades, interpreting them as liminal figures who physically summarise various categories of inhabitants of the Bas-Lag. The second moves from Foucault’s reflections on the relation between power and punishment and on the centrality of the body in this relation to determine how these categories – power and punishment – work in the context of the specifically posthuman bodies of Remades. Combining these perspectives produces interesting results. First, it can account for the “otherness” of Remades on the level of their physical transformation (from “whole” bodies to Remades) as well as on the level of their social position (from citizens, to prisoners, to outcasts). In addition to this, by providing some key examples, the paper foregrounds that, if the dialectical relationship between Remades and society is overtly inscribed on their bodies, different societies are likely to alter them in different ways. As a result, a totalitarian structure will inflict marks that are not superimposable with those produced by an egalitarian one.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Sum rules for tetraquark decay coupling constants with broken SU(3) symmetry
Creators: name: Gupta, V.
name: Sánchez-Colón, G.
name: Rajpoot, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give sum rules for tetraquark decay coupling constants, taking into account the SU(3) symmetry breaking interactions to first order.
«The Future of Humans in a Post-Human World»: Frankissstein by Jeanette Winterson
Creators: name: Ciompi, Fausto
Publisher: name: Between
Year: 2022

description: Frankissstein: A Love Story, Jeanette Winterson's 2019 novel, is a mirror transposition of Mary Shelley’s Frankenstein. The novel adumbrates a posthuman or transhuman life to be lived “forever as brain emulation” (Winterson 2020, 104). What was traditionally known as the human being is now required to transcend biology through “better biology” (ibid. 113), i.e., Artificial Intelligence. Assuming that homo sapiens is not a special case, an ontology that transcends the human/nonhuman divide is proposed in Winterson’s story by scientist Victor Stein. He assumes that we can develop our brain software through learning, including outsourcing to machines, until we learn to share the planet with “non biological forms created by us” (ibid. 73). This delineates a utopian dimension in which the relationship between self, other and power is reworked so that as, in Donna Haraway’s words, there is “agency ...without defended subjects” (Haraway 1991, 3). Or, in other words, a world in which the cyborgification (the fusion of nature and culture/technology) is seen as inevitable and there is no need to ‘defend’ nature. With further lines of thought, my paper explores the metaphorical fields (parallel worlds, simulacra) and narrative devices (metalepsis, alternating montage, internal parallelism) that underpin this story. My point is that the attempted fusion of nature and technology, as theorised by techno-scientists in Winterson’s story, only produces a modification in the attitude of some unaugmented humans towards other unaugmented humans, both living and dead. Eventually humans are not cyborgs, nor inforgs, nor full-blown transhumans but boundary creatures straddling alternative ontologies and often acting as less than humans, infrahumans or, like transexual Ry Shelley, “inappropriate others” (Haraway 1992).
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Artificial Life in Horacio Quiroga. Commercial Advertisements, Cinema, and the Prompted Suspension of Disbelief
Creators: name: Chihaia, Matei
name: Ferrari, Alejandro
Publisher: name: Between
Year: 2022

description: The fictions of the Uruguayan-Argentinian writer Horacio Quiroga allow a case study on how media shape the image of artificial life. While “El hombre artificial”, one of his early novellas, follows a nineteenth-century scheme of electromagnetic transmission of consciousness, later texts chose “N-rays” (“El vampiro”) or cinematographic projection (“El espectro”) as a ground for spectral life. This is not, however, the only difference between the early and the later fiction. The models of literary invention follow, on the one hand, the history of technology and the author’s own passion for science and cinema; on the other hand, they can be related to forms of publication, such as the serialized novellas of the illustrated magazine, and the form illustrations and commercial advertisements pervade literary creation. The way artificial life is handled throughout Quiroga’s work sheds light on his own constitution as an author: behind the making of the artificial being stands the making of the artist.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Lipschitz bounds for solutions of quasilinear parabolic equations in one space variable
Creators: name: Andrews, Ben
name: Clutterbuck, Julie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35B65

description: We bound the modulus of continuity of solutions to quasilinear parabolic equations in one space variable in terms of the initial modulus of continuity and elapsed time. In particular we characterize those equations for which the Lipschitz constants of solutions can be bounded in terms of their initial oscillation and elapsed time.
description: 16 pages
Pauli paramagnetism of an ideal Fermi gas
Creators: name: Lee, Ye-Ryoung
name: Wang, Tout T.
name: Rvachov, Timur M.
name: Choi, Jae-Hoon
name: Ketterle, Wolfgang
name: Heo, Myoung-Sun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show how to use trapped ultracold atoms to measure the magnetic susceptibility of a two-component Fermi gas. The method is illustrated for a non-interacting gas of $^6$Li, using the tunability of interactions around a wide Feshbach resonances. The susceptibility versus effective magnetic field is directly obtained from the inhomogeneous density profile of the trapped atomic cloud. The wings of the cloud realize the high field limit where the polarization approaches 100%, which is not accessible for an electron gas.
description: 5 pages, 4 figures
Mode splitting of surface plasmon resonances in super-period metal nanohole gratings
Creators: name: Guo, Junpeng
name: Leong, Haisheng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We experimentally observed the surface plasmon resonance mode splitting in a super-period metal nanohole grating under the transverse magnetic polarization excitation. The mode splitting was observed in the zeroth order transmission and also in the first order diffracted transmission. However, the mode splitting phenomenon is more evident in the first order transmission than in the zeroth order transmission. It is explained that the mode splitting is due to the coupling between the surface plasmon resonance mode in the subwavelength period metal nanohole arrays and the resonance mode of the metal super-grating.
Testing for Unobserved Heterogeneity via k-means Clustering*
Creators: name: Patton, Andrew J.
name: Weller, Brian M.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Clustering methods such as k-means have found widespread use in a variety of applications. This paper proposes a split-sample testing procedure to determine whether a null hypothesis of a single cluster, indicating homogeneity of the data, can be rejected in favor of multiple clusters. The test is simple to implement, valid under mild conditions (including non-normality, and heterogeneity of the data in aspects beyond those in the clustering analysis), and applicable in a range of contexts (including clustering when the time series dimension is small, or clustering on parameters other than the mean). We verify that the test has good size control in finite samples, and we illustrate the test in applications to clustering vehicle manufacturers and U.S. mutual funds.
Shock waves in thermal lensing
Creators: name: Gentilini, S.
name: Ghofraniha, N.
name: DeRe, E.
name: Conti, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We review experimental investigation on spatial shock waves formed by the self-defocusing action of a laser beam propagation in a disordered thermal nonlinear media.
description: 9 pages, 12 figures
1 Impact of HR Policies and Practices on Employee Job Satisfaction Evidence from Pakistan Telecommunication Ltd (PTCL) Hyderabad, Pakistan.pdf
Creators: name: Khushk, Amir
Publisher: name: figshare
Year: 2022
Subjects: subject: 150305 Human Resources Management
subject: FOS: Economics and business

description: Aim-This research highlights the HR policies and practices in terms of compensation and performance evaluation and its impact on employee job satisfaction. This study will fill the gap in the literature by providing information on compensation and performance functions of human resource. Design-In this research descriptive design is taken in the collection of bias-free data. A sample of 42 respondents was taken into consideration from different management level of PTCL such as top, middle and lower level and the target population of this study was human resource department, management, and administrative staff. To collect the required information closed-ended questionnaire was used and were divided into three part; initially questionnaire identify the demographic factors of the respondents, then highlight the Likert scale options 1 being strongly disagreed and 5 strongly agree. Findings-In findings of this research we highly recommend the management to have fair and equitable compensation policies and establish performance evaluation system which can reduce to biases at all levels.
Consent and coercion: How the ideology of progressivism preserved capitalist relations in Nevada, 1900-1919
Creators: name: Barber, Daniel Mark
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: During the so-called "Progressive Era," the State of Nevada influenced the consciousness of workers by rewarding proper thinking with access to state power and punishing improper thinking with criminal sanctions. Nevada Governor Emmet D. Boyle fostered a relationship with the state's prominent trade unionists that promoted Progressive notions of industrial cooperation. Legislation that created the Office of Labor Commissioner in 1915 secured this Progressive consensus between the State and trade unions in Nevada. The Industrial Workers of the World (IWW) threatened this relationship however by introducing throughout Nevada's mining districts a radical, "class conscious" critique of capitalist relations. In response to this ideological challenge, trade unionists in Nevada supported passage of the Criminal Syndicalism Act in 1919. With the subsequent demise of the IWW, a hegemonic Progressive ideology in Nevada served to further conceal from organized labor the exploitive nature of capitalist relations.
Detection of Multiple Structural Breaks in Large Covariance Matrices
Creators: name: Li, Yu-Ning
name: Li, Degui
name: Fryzlewicz, Piotr
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: This article studies multiple structural breaks in large contemporaneous covariance matrices of high-dimensional time series satisfying an approximate factor model. The breaks in the second-order moment structure of the common components are due to sudden changes in either factor loadings or covariance of latent factors, requiring appropriate transformation of the factor models to facilitate estimation of the (transformed) common factors and factor loadings via the classical principal component analysis. With the estimated factors and idiosyncratic errors, an easy-to-implement CUSUM-based detection technique is introduced to consistently estimate the location and number of breaks and correctly identify whether they originate in the common or idiosyncratic error components. The algorithms of Wild Binary Segmentation for Covariance (WBS-Cov) and Wild Sparsified Binary Segmentation for Covariance (WSBS-Cov) are used to estimate breaks in the common and idiosyncratic error components, respectively. Under some technical conditions, the asymptotic properties of the proposed methodology are derived with near-optimal rates (up to a logarithmic factor) achieved for the estimated breaks. Monte Carlo simulation studies are conducted to examine the finite-sample performance of the developed method and its comparison with other existing approaches. We finally apply our method to study the contemporaneous covariance structure of daily returns of S&P 500 constituents and identify a few breaks including those occurring during the 2007–2008 financial crisis and the recent coronavirus (COVID-19) outbreak. An R package “BSCOV” is provided to implement the proposed algorithms.
Large Hybrid Time-Varying Parameter VARs
Creators: name: Chan, Joshua C. C.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Statistics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Time-varying parameter VARs with stochastic volatility are routinely used for structural analysis and forecasting in settings involving a few endogenous variables. Applying these models to high-dimensional datasets has proved to be challenging due to intensive computations and over-parameterization concerns. We develop an efficient Bayesian sparsification method for a class of models we call hybrid TVP-VARs—VARs with time-varying parameters in some equations but constant coefficients in others. Specifically, for each equation, the new method automatically decides whether the VAR coefficients and contemporaneous relations among variables are constant or time-varying. Using U.S. datasets of various dimensions, we find evidence that the parameters in some, but not all, equations are time varying. The large hybrid TVP-VAR also forecasts better than many standard benchmarks.
Design optimization workflow and performance analysis for contoured endwalls of axial turbines
Creators: name: Rona, Aldo
name: Kadhim, Hakim Tarteeb Kadhim
Publisher: name: figshare
Year: 2022
Subjects: subject: 90101 Aerodynamics (excl. Hypersonic Aerodynamics)
subject: FOS: Mechanical engineering
subject: Mechanical Engineering
subject: 91305 Energy Generation, Conversion and Storage Engineering
subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Advances in computer-based optimization techniques can be used to enhance the efficiency of energy conversions processes, such as by reducing the aerodynamic loss in thermal power plant turbomachines. One viable approach for reducing this flow energy loss is by endwall contouring. This paper implements a design optimization workflow for the casing geometry of a 1.5 stage axial turbine, towards mitigating secondary flows. Two different parametric casing surface definitions are used in the optimization pro- cess. The first method is a new nonaxisymmetric casing design using a novel surface definition. The second method is an established diffusion design technique. The designs are tested on a three- dimensional axial turbine RANS model. Computer-based optimization of the surface topology is demonstrated towards automating the design process. This is implemented using Automated Process and Optimization Workbench (APOW) software. Kriging is used to accelerate the optimization process. The optimization and its sensitivity analysis give confidence that a good predictive ability is obtained by the Kriging surrogate model used in the prototype design process tested in this work. A flow analysis con- firms the positive impact of the optimized casing groove design on the stage isentropic efficiency compared to the diffusion design and compared to the benchmark axisymmetric design.
Representation of Crystallographic Subperiodic Groups by Geometric Algebra
Creators: name: Hitzer, Eckhard
name: Ichikawa, Daisuke
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We explain how following the representation of 3D crystallographic space groups in geometric algebra it is further possible to similarly represent the 162 socalled subperiodic groups of crystallography in geometric algebra. We construct a new compact geometric algebra group representation symbol, which allows to read off the complete set of geometric algebra generators. For clarity we moreover state explicitly what generators are chosen. The group symbols are based on the representation of point groups in geometric algebra by versors (Clifford group, Lipschitz elements).
description: 11 pages, 5 figures, 9 tables
Performing simulacra. Human/animal intersections in the work of Sarah Kane
Creators: name: Soncini, Sara
Publisher: name: Between
Year: 2022

description: This article looks at the presence and function of animals in the dramatic works of Sarah Kane, a recognized protagonist of the experimental theatre scene in Britain and abroad. The by now massive scholarship on Kane has tended to see her work as epitomizing the move beyond the dramatic paradigm famously theorized by Hans-Thies Lehmann, and as equally marked by increasingly dehumanised constructions of subjectivity that culminate in the disembodied theatrical landscapes of her late plays. The research presented here addresses a hitherto unexplored dimension to Kane’s joint engagement with the boundaries of subjectivity and the boundaries of theatre, namely, the pervasive presence of animals across her entire oeuvre and their thought-provoking intersections with the human subjects with whom they share the stage. Through a combination of textual and performance analysis, I chart the complex, changing configurations of this relationship of co-habitation and mutual implication, offering an extensive discussion of the role of animals as key players in Kane’s dramaturgy of simulacra.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Evidence for Two Distinct Stellar Initial Mass Functions : Revisiting the Effects of Cluster Dynamical Evolution
Creators: name: Zaritsky, Dennis
name: Colucci, Janet E.
name: Pessev, Peter M.
name: Bernstein, Rebecca A.
name: Chandar, Rupali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We measure the velocity dispersions of six, galactic globular clusters using spatially integrated spectra, to test for the effects of internal dynamical evolution in the stellar mass-to-light ratios, Upsilon_*, of star clusters. In particular, we revisit whether the low values of Upsilon_* we found in our previous study, from which we concluded that there are at least two population of stellar clusters with distinct stellar initial mass functions, are artificially depressed by relaxation driven mass loss. The combination of our previous sample of five old clusters and these six now provides an order of magnitude range in cluster mass with which to explore this issue. We find no relationship between cluster mass, or relaxation time, and Upsilon_*. Because relaxation is mass dependent, we conclude that the values of Upsilon_* for these clusters are not strongly affected by dynamical effects, and so confirm the presence of the population of clusters with low Upsilon_*.
description: Accepted for Publication in ApJ
Hybrid Bodies between Utopia and Trauma in F.T. Marinetti
Creators: name: Savettieri, Cristina
Publisher: name: Between
Year: 2022

description: This article analyses a small selection of texts by Filippo Tommaso Marinetti with the aim to shed new light on the role that the experience of combat during the First World War played in the evolution of the narrative of the body in Marinetti’s imagination. Different pre-war narratives of the body will be first analysed and then placed against the backdrop of the cultural productions of the war years. Specific attention will be paid to the images of the prosthetic body with a wider look onto other social discourses (medical science, politics, propaganda). The article will argue that Marinetti re-writes and adjust his earlier narratives of the body and highlight the ambivalences and social fantasies, mostly relevant to gender and sexuality, underlying them.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Baryon-baryon interactions from chiral effective field theory
Creators: name: Haidenbauer, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Results from an ongoing study of baryon-baryon systems with strangeness S=-1 and -2 within chiral effective field theory are reported. The investigations are based on the scheme proposed by Weinberg which has been applied rather successfully to the nucleon-nucleon interaction in the past. Results for the hyperon-nucleon and hyperon-hyperon interactions obtained to leading order are reviewed. Specifically, the issue of extrapolating the binding energy of the H-dibaryon, extracted from recent lattice QCD simulations, to the physical point is addressed. Furthermore, first results for the hyperon-nucleon interaction at next-to-leading order are presented and discussed.
description: 8 pages, 4 figures, proceedings HYP2012
Diminishing Figures: Spectral Simulacra of Authors in Henry James’s and Max Beerbohm’s Decadent Short Stories
Creators: name: Bugliani, Paolo
Publisher: name: Between
Year: 2022

description: This paper analyses two stories by Henry James and two others by Max Beerbohm whose protagonists are, at the same time, writers and ghosts. Such a diegetic scenario is interesting because it seems to point at a disguised metaliterary treatment of current ideas about fin de siècle authoriality and a peculiar metalepsis of the concept of the death of the author, later popularized in post-structuralist France. After a contextualization of Henry James’s and Max Beerbohm’s dissimilar but equally significant contribution to the genre of the ‘Decadent short story’, the discourse turns to the features of their writer-ghosts, in order to retrace not only their conjunctural literary value, but also their fascinating impact on aesthetical matters.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Asúa Altuna, Raul Ruiz de, Cultura Tradicional Banto. Ed. do Secretariado Arquidiocesano de Pastoral. 1 vol. de 622 ps., 215x145. Luanda 1985
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1985

description: Theologica, v. 20 n. 1-4 (1985)
Using Survey Information for Improving the Density Nowcasting of U.S. GDP
Creators: name: Çakmakl, Cem
name: Demircan, Hamza
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Computational Biology

description: We provide a methodology that efficiently combines the statistical models of nowcasting with the survey information for improving the (density) nowcasting of U.S. real GDP. Specifically, we use the conventional dynamic factor model together with stochastic volatility components as the baseline statistical model. We augment the model with information from the survey expectations by aligning the first and second moments of the predictive distribution implied by this baseline model with those extracted from the survey information at various horizons. Results indicate that survey information bears valuable information over the baseline model for nowcasting GDP. While the mean survey predictions deliver valuable information during extreme events such as the Covid-19 pandemic, the variation in the survey participants’ predictions, often used as a measure of “ambiguity,” conveys crucial information beyond the mean of those predictions for capturing the tail behavior of the GDP distribution.
Blackbeard and the Post-Anthropocene Humanoids. Tracing the Post/Transhuman in Margaret Atwood's MaddAddam Trilogy
Creators: name: Giovannelli, Laura
Publisher: name: Between
Year: 2022

description: This paper aims to investigate the meanings and phenomenologies of the simulacrum as a materialisation of a hybrid, liminal and nomadic ontology and as the result of biotechnological experiments that have redesigned the animal/human along post-anthropocentric lines. The analysis takes its cue from the post-apocalyptic setting of Atwood’s MaddAddam trilogy, with a final focus on the last book in the series. After the world population has been decimated by a pandemic unleashed by Crake, the creatures he has generated via transgenic technology emerge as the ‘fittest’ inheritors of the Earth. Toby, one of the few human survivors, is involved in training them in the Post-Anthropocene era. Attention will be paid to the Crakers’ identity as humanoids hovering between an anthropological and a zoomorphic dimension. If capable of establishing bioegalitarian relationships with the ecosystem, such pseudo-primates also show uncanny features that progressively come to the fore through their leader Blackbeard.
description: Between, V. 12 N. 24 (2022): Entrare nel mondo dei simulacri. Fenomenologie estetiche e culturali fra letteratura, media e arti
Marques, Armando, Os “Commentarii in lonam Prophetam» de Frei Sebastião Toscano. Separata dos «Anais- da Acad. Portug. da História, II série vol. 29. 1 vol. de 84 ps., 240x180. Lisboa 1984
Creators: name: Freire, António
Publisher: name: Theologica
Year: 1985

description: Theologica, v. 20 n. 1-4 (1985)
Embodied Hyperscanning: Scoping review of physiological signal hyperscanning
Creators: name: Grasso-Cladera, Aitana
name: Costa-Cordella, Stefanella
name: Parada, Francisco
name: Mattoli-Sanchez, Josefina
name: Santander, Valentina
name: Hiltner, Shari
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: Cognitive Science
subject: Dual Scanning
subject: Electrophysiology
subject: hyperscanning
subject: Neuroscience
subject: Physiological Signals

description: This protocol describes the methodology for a scoping review that seeks to characterize the extent and type of evidence in relation to the use of hyperscanning in neuroscience research for the acquisition of different physiological signals.
The effects of implementation of Quality Management on employee productivity in the lodging function of a full service hotel: A case study analysis of the Bergstrom Hotels Corporation
Creators: name: Corey-Tuckwell, Susan Elizabeth
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: The purpose of this study was to conduct a qualitative, descriptive case study analysis of a hotel company in Wisconsin that has implemented Quality Management in the operations and administration of its three full service hotel properties. The three questions addressed in this study were: (1) Why did Bergstrom Hotels choose to implement Quality Management? (2) How was Quality Management initiated and supported throughout the company? and (3) What were the results on employee productivity? The last case study question addressed the hypothesis that Quality Management would have the effect of increasing the levels of employee productivity in the lodging functions of the hotel(s). It also addressed the sub-hypothesis of the study which was that management has the ability to measure the productivity of its employees; Information for the study was collected through the use of multiple sources of evidence. The first source involved semi-structured interviews conducted with Senior Management, Upper Management, Middle Management and Line Employees. The second source involved gathering documentation of quality team meeting minutes, completed project results and archival records of the company's turnover statistics, guest and employee satisfaction surveys; The results indicated consistency in responses of all employees with regard to case study questions one and three. It was perceived that Quality Management was implemented because it was consistent with the values and beliefs of the President (of the company) and that implementation had a positive impact on the role and status of employees. Results of the study could not conclusively support either the hypothesis or sub-hypothesis. Productivity, as defined by Bergstrom Hotels, involved employee and guest satisfaction. These could not be measured based on the surveys provided by the company. The implications of this, along with recommendations for future research, were discussed.
Large-Scale Generalized Linear Models for Longitudinal Data with Grouped Patterns of Unobserved Heterogeneity
Creators: name: Ando, Tomohiro
name: Bai, Jushan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Plant Biology

description: This article provides methods for flexibly capturing unobservable heterogeneity from longitudinal data in the context of an exponential family of distributions. The group memberships of individual units are left unspecified, and their heterogeneity is influenced by group-specific unobservable factor structures. The model includes, as special cases, probit, logit, and Poisson regressions with interactive fixed effects along with unknown group membership. We discuss a computationally efficient estimation method and derive the corresponding asymptotic theory. Uniform consistency of the estimated group membership is established. To test heterogeneous regression coefficients within groups, we propose a Swamy-type test that allows for unobserved heterogeneity. We apply the proposed method to the study of market structure of the taxi industry in New York City. Our method unveils interesting and important insights from large-scale longitudinal data that consist of over 450 million data points.
Industrial-Strength Model-Based Testing - State of the Art and Current Challenges
Creators: name: Peleska, Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.4; D.2.5

description: As of today, model-based testing (MBT) is considered as leading-edge technology in industry. We sketch the different MBT variants that - according to our experience - are currently applied in practice, with special emphasis on the avionic, railway and automotive domains. The key factors for successful industrial-scale application of MBT are described, both from a scientific and a managerial point of view. With respect to the former view, we describe the techniques for automated test case, test data and test procedure generation for concurrent reactive real-time systems which are considered as the most important enablers for MBT in practice. With respect to the latter view, our experience with introducing MBT approaches in testing teams are sketched. Finally, the most challenging open scientific problems whose solutions are bound to improve the acceptance and effectiveness of MBT in industry are discussed.
description: In Proceedings MBT 2013, arXiv:1303.0379
Estimation of Panel Data Models with Random Interactive Effects and Multiple Structural Breaks when T is Fixed
Creators: name: Kaddoura, Yousef
name: Westerlund, Joakim
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: In this article, we propose a new estimator of panel data models with random interactive effects and multiple structural breaks that is suitable when the number of time periods, T, is fixed and only the number of cross-sectional units, N, is large. This is done by viewing the determination of the breaks as a shrinkage problem, and to estimate both the regression coefficients, and the number of breaks and their locations by applying a version of the Lasso approach. We show that with probability approaching one the approach can correctly determine the number of breaks and the dates of these breaks, and that the estimator of the regime-specific regression coefficients is consistent and asymptotically normal. We also provide Monte Carlo results suggesting that the approach performs very well in small samples, and empirical results suggesting that while the coefficients of the controls are breaking, the coefficients of the main deterrence regressors in a model of crime are not.
Time-interior gradient estimates for quasilinear parabolic equations
Creators: name: Andrews, Ben
name: Clutterbuck, Julie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35B65

description: Bounded smooth solutions of the Dirichlet and Neumann problems for a wide variety of quasilinear parabolic equations, including graphical anisotropic mean curvature flows, have gradient bounded in terms of oscillation and elapsed time.
description: 25 pages