cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Evidence-Based Practices for the Design of Inclusive Playgrounds that Support Peer Interactions Among Children with All Abilities
Creators: name: Fernelius, Courtney L.
Publisher: name: Utah State University
Year: 2017

description: Play is necessary for the social, emotional, intellectual, and physical development of all children. Although playgrounds are designed to support the play of children, children with disabilities are often unable to fully participate in play on playgrounds. As a result, children with disabilities experience fewer opportunities to participate in play, and hence have fewer developmental opportunities. Because of the lack of awareness of evidence-based practices supporting the play of children with disabilities, playground designers continue to perpetuate this disparity. Therefore, the purpose of this study was to determine the evidence-based practices for inclusive playground design that support peer interaction between children of all abilities, and to demonstrate how they can be implemented into a playground design. Through a systematic literature review and design implementation, 10 evidence-based practices of inclusive playground design were determined and then implemented into a playground design located on the Utah State University campus. The design for this inclusive playground was evaluated, analyzing the ease and difficulty of including each of the 10 practices of inclusive playground design. The results of this study provide designers with a concise list of 10 practices that, if implemented, should create an inclusive playground setting. These practices also have research-based evidence to support their effectiveness in facilitating peer interactions between children of all abilities. As our society strives to make various environments and built structures more inclusive, the results of this study provide a helpful resource to guide designers, administrators, businesses, city councils, and many more organizations in their work to create inclusive playgrounds.
title: Empirical Studies of Ionospheric Electric Fields
Creators: name: Scherliess, Ludger
Publisher: name: Utah State University
Year: 1997

description: The first comprehensive study of equatorial- to mid-latitude ionospheric electric fields (plasma drifts) is presented, using extensive incoherent scatter radar measurements from Jicamarca, Arecibo, and Millstone Hill, and F-region ion drift meter data from the polar orbiting DE-2 satellite. Seasonal and solar cycle dependent empirical quiet-time electric field models from equatorial to mid latitudes are developed, which improve and extend existing climatological models. The signatures of electric field perturbations during geomagnetically disturbed periods, associated with changes in the high-latitude currents and the characteristics of storm-time dynamo electric fields driven by enhanced energy deposition into the high-latitude ionosphere, are studied. Analytical empirical models that describe these perturbation drifts are presented.
The study provided conclusive evidence for the two basic components of ionospheric disturbance electric fields. It is shown that magnetospheric dynamo electric fields can penetrate with significant amplitudes into the equatorial- to mid-latitude ionosphere, but only for periods up to 1 hour, consistent with results from the Rice Convection Model. The storm-time wind-driven electric fields are proportional to the high-latitude energy input, vary with local time and latitude, and have largest magnitudes during nighttime. These perturbations affect differently the zonal and meridional electric field components. It is shown that equatorial zonal electric fields (vertical drifts) can be disturbed up to 30 hours after large enhancements in the high-latitude currents. These perturbation electric fields are associated with enhanced high-latitude energy deposition taking place predominantly between about 1-12 hours earlier and found to be in good agreement with the Blanc-Richmond disturbance dynamo model. A second class of perturbations occurs around midnight and in the dawn-noon sector with delays of about 18-30 hours between the equatorial- and the high-latitude disturbances , and maximizes during locally quiet geomagnetic times.
The latitudinal variation of the meridional disturbance electric fields (zonal drifts) is also presented. It is shown that these perturbation electric fields are predominantly downward/equatorward at all latitudes and due to both prompt penetration and disturbance dynamo electric fields. These results are also generally consistent with predictions from global convection and disturbance dynamo models.
Nucleon Electromagnetic Form Factors from Lattice QCD using 2+1 Flavor Domain Wall Fermions on Fine Lattices and Chiral Perturbation Theory
Creators: name: Syritsyn, S. N.
name: Bratt, J. D.
name: Lin, M. F.
name: Meyer, H. B.
name: Negele, J. W.
name: Pochinsky, A. V.
name: Procura, M.
name: Engelhardt, M.
name: Hagler, Ph.
name: Hemmert, T. R.
name: Schroers, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a high-statistics calculation of nucleon electromagnetic form factors in $N_f=2+1$ lattice QCD using domain wall quarks on fine lattices, to attain a new level of precision in systematic and statistical errors. Our calculations use $32^3 \times 64$ lattices with lattice spacing a=0.084 fm for pion masses of 297, 355, and 403 MeV, and we perform an overdetermined analysis using on the order of 3600 to 7000 measurements to calculate nucleon electric and magnetic form factors up to $Q^2 \approx$ 1.05 GeV$^2$. Results are shown to be consistent with those obtained using valence domain wall quarks with improved staggered sea quarks, and using coarse domain wall lattices. We determine the isovector Dirac radius $r_1^v$, Pauli radius $r_2^v$ and anomalous magnetic moment $κ_v$. We also determine connected contributions to the corresponding isoscalar observables. We extrapolate these observables to the physical pion mass using two different formulations of two-flavor chiral effective field theory at one loop: the heavy baryon Small Scale Expansion (SSE) and covariant baryon chiral perturbation theory. The isovector results and the connected contributions to the isoscalar results are compared with experiment, and the need for calculations at smaller pion masses is discussed.
description: 44 pages, 40 figures
Thermal expansion coefficient and lattice anharmonicity of cubic boron arsenide
Creators: name: Chen, Xi
name: Li, Chunhua
name: Tian, Fei
name: Gamage, Geethal Amila
name: Sullivan, Sean
name: Zhou, Jianshi
name: Broido, David
name: Ren, Zhifeng
name: Shi, Li
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: anharmonicity
arsenide

description: Recent measurements of an unusual high thermal conductivity of around 1000 W m-1 K-1 at room temperature in cubic boron arsenide (BAs) confirm predictions from theory and suggest potential applications of this semiconductor compound for thermal management applications. Knowledge of the thermal expansion coefficient and Grüneisen parameter of a material contributes both to the fundamental understanding of its lattice anharmonicity and to assessing its utility as a thermal-management material. However, previous theoretical calculations of the thermal expansion coefficient and Grüneisen parameter of BAs yield inconsistent results. Here we report the linear thermal expansion coefficient of BAs obtained from the X-ray diffraction measurements from 300 K to 773 K. The measurement results are in good agreement with our ab initio calculations that account for atomic interactions up to fifth nearest neighbours. With the measured thermal expansion coefficient and specific heat, a Grüneisen parameter of BAs of 0.84 +/- 0.09 is obtained at 300 K, in excellent agreement with the value of 0.82 calculated from first principles and much lower than prior theoretical results. Our results confirm that BAs exhibits a better thermal expansion coefficient match with commonly used semiconductors than other high-thermal conductivity materials such as diamond and cubic boron nitride.
Relationship between Diffusion, Selfdiffusion and Viscosity
Creators: name: Avramov, I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the experimental limits of validity of the Stokes-Einstein equation. There is an important difference between diffusion and self-diffusion. There are experimental evidences, that in the case of self-diffusion the product D /T is constant and the equation is still valid. However, comparison of existing experimental data on viscosity and diffusion coefficients D of small, fast moving ions unambiguously show that the product D /T depends strongly on temperature T. The temperature dependence of diffusion coefficient declines from that of viscosity. Therefore, the Stokes-Einstein equation is not valid in this case.
Ultrafast multi-photon excitation of ScVO$_4$:Bi$^{3+}$ for luminescence thermometry
Creators: name: Escofet-Martin, David
name: Ojo, Anthony O.
name: Peterson, Brian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate a multi-photon excitation (MPE) scheme for luminescence thermometry using ScVO$_4$:Bi$^{3+}$. MPE is performed using a 37 fs Ti:Sapphire laser pulse centred at 800 nm. Log-log plots of the phosphorescence intensity versus excitation power show that the 800 nm MPE of ScVO$_4$:Bi$^{3+}$ involves a 2- and 3-photon absorption process in comparison to a single-photon excitation (SPE) process at 266 nm and 400 nm. Spectroscopic investigation shows that with the 800 nm MPE and 266 nm SPE schemes, the emission spectra of ScVO$_4$:Bi$^{3+}$ are similarly characterized by emissions of the VO$_4^{3-}$ groups and Bi$^{3+}$. The MPE is advantageous to suppress fluorescence which interfere with the phosphorescence signal. We demonstrate this aspect for a ScVO$_4$:Bi$^{3+}$ coating applied on an alumina substrate. The luminescence lifetime is calibrated with temperature over 294-334 K; the MPE scheme has an equally impressive temperature sensitivity (3.4-1.7% / K) and precision (0.2-0.7K) compared to the SPE schemes. The MPE scheme can be applied to a variety of phosphors and is valuable for precise temperature measurements even in applications where isolating interfering background emissions is challenging.
title: Experimental and Simplified Analytical Investigation of Full Scale Sandwich Panel Walls
Creators: name: Al-Rubaye, Salam Adil
Publisher: name: Utah State University
Year: 2017

description: Concrete sandwich wall panels have been used for decades in the precast concrete construction industry because of their thermal efficiency. To achieve full or partial-composite action in concrete sandwich panel walls, the engineer must obtain a percent composite action from a connector manufacturer, making some engineers uncomfortable. Engineers are dependent upon the recommendations given by the connector manufacturers to establish their designs. This project tested six full scale sandwich panel walls to evaluate the percent composite action of various connectors and compare the results to those provided by the composite connector manufacturers.
This project aimed to validate current procedures using these methods, and to develop simpler, more efficient methods for predicting overall strength of this innovative building system. This study concluded that the reported degrees of composite action from each manufacturer are considered conservative in all instances for the connectors tested. Additionally, the intensity and type of connectors are important factors in determining the degree of partial composite action in a panel.
Activation of carbon monoxide, hydrogen and oxygen by rhodium halide complexes in solution
Creators: name: Rosenberg, George Nathan
Publisher: name: University of British Columbia
Year: 2010

description: Kinetic studies are described for the activation of carbon monoxide, molecular hydrogen, and molecular oxygen by rhodium halide complexes in solution. Carbon monoxide reacts with bromorhodate(III) and bromocarbon-ylrhodate(III) complexes to produce the anionic species, [Rh(C0)2Br2]⁻. The reaction of [RhBr4(H2O)2]²⁻ in acid bromide solutions involves initial formation of a RhIII(C0) substitution product, which then undergoes reductive carbonylation: [Eqn 1 and 2] Further production of RhI is autocatalytic due to a more effective reduction via a CO independent path that involves a [RhIII…Br…RhI(CO)2I] bridged intermediate. Reductive carbonylation of the pentabromocarbonyl-rhodate(III) complex in aqueous HBr solution proceeds in a similar manner. Decomposition of RhIIICO) by water to produce Rh1 species (equations 1 and 2) results in the autocatalytic formation of [Rh(C0)2Br2]⁻ through a step that again involves a bromide-bridged intermediate, [(CO)RhIII…Br ---RhI(C0)2] . Carbon monoxide can be catalytically activated by rhodium(III) for the reduction of substrates such as ferric ion. Kinetic studies sug-gest a mechanism involving reduction of [Rh(C0)Br5]²⁻ by water. Data are consistent with the following scheme: [Eqn 3] Acid solutions of RhBr3•2H20 activate H2 for the reduction of FeIII . Formation of a metal hydride in the rate-determining step appears to involve substitution by an associative mechanism: [Eqn 4] Activation parameters for the reaction of [RhBr4(H20)2]⁻ with H2 are similar to those found for the corresponding reaction with CO (equation 1). The reaction of [Rh(C0)2Cl2]⁻ with 02 in 3M HC1 initiallyforms [RhIII(C0)C151]²⁻ by a path thought to involve formation of an oxygen complex: [Eqn 5] The observed kinetics indicate that further RhIII(CO) is autocatalytically produced according to the following sequence: [Eqn 6, 7, 8] Subsequent slower reaction to give chlororhodate(III) species 2-occurs via slow hydration of [Rh(C0)Cl5]²⁻. [Eqn 9,10] Studies on the oxidation of [Rh(CO)2C12]⁻ in LiCl/DMA by molecular 02 suggest the involvement of hydroperoxide free radicals for the production of RhII. Evidence for a carbonato intermediate formed during the oxidation process has been obtained. The RhII solutions were found to contain active, though inefficient, catalysts for the autoxida-tion of DMA. The presence of RhII - 02 has been detected by esr, and the superoxide species may be responsible for the autoxidation reaction. A paramagnetic chloride-bridged rhodium(II) anion [Rh0Clc(DMA)2]²⁻ was isolated from the oxygenated DMA solutions of [Rh(C0)2Cl2]⁻ containing excess chloride.
Dynamic equations for three different qudits in a magnetic field
Creators: name: Ivanchenko, E. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A closed system of equations for the local Bloch vectors and spin correlation functions of three magnetic qudits, which are in an arbitrary, time-dependent, external magnetic field, is obtained using decomplexification of the Liouville-von Neumann equation. The algorithm of the derivation of the dynamic equations is presented. In the basis convenient for the important physical applications structure constants of algebra su(2S+1) are calculated.
description: 11 pages
Applying Physics-Informed Neural Networks to the Solution of Parametric, Nonlinear Heat Conduction Problems
Creators: name: Russell, Collin
Publisher: name: My University
Year: 2023
Subjects: subject: Physics-informed neural networks (PINNs)
subject: box furnace
subject: steady-state heat conduction
subject: neural network training
subject: Computer science
subject: Artificial intelligene
subject: Computational physics

description: Physics-informed neural networks (PINNs), and the many variants they have inspired, have the potential to reshape how scientists and engineers solve computational physics problems. Despite their relatively recent introduction to the scientific community, PINNs have been successfully used to approximate the solution to a variety of computational physics problems, including heat transfer problems. In this work, a PINN is trained to solve a 2-D, steady-state heat conduction problem inspired by the practical problem of finding the cross-sectional, steady-state temperature field in the insulation module of a box furnace. The problem is formulated such that (i) the thermal conductivity of the heat-conducting medium is modeled as quadratic function of temperature and (ii) the coefficients of the quadratic function are parameterized and passed to the PINN as additional inputs. The PINN is trained exclusively by minimizing physics residuals (i.e., no data is used in the training process), and its accuracy is evaluated using a testing dataset composed of eight numerical solutions, each of which is associated with a unique, commercially available high-temperature insulation material. The results obtained in this work demonstrate the feasibility of training a PINN (without any training data) to accurately solve heat conduction problems involving parameterized, temperature-dependent material property models. To the author’s knowledge, this is the first time this capability has been demonstrated.
title: Reliability Underseepage Assessment of Levees Incorporating Geomorphic Features and Length Effects
Creators: name: Boulware, Lourdes Polanco
Publisher: name: Utah State University
Year: 2017

description: It has been estimated that approximately fifty percent of the United States’ population lives behind levees. Because these earth structures are typically long, subjected to seasonal changes and spatial variability, it is logical to analyze them in an uncertainty-based approach. This research is focused on assessing the potential of internal erosion related failure due to underseepage with the general objective of assessing the failure potential of individual geomorphic features while considering length effects. The project team was granted $204,000 from the National Science Foundation and $10,000 from the United States Society on Dams which resulted in research collaboration within graduate students and University of Delaware faculty as well as several presentations in prestigious conferences (in the U.S and Europe) and publication of journal papers. Findings from this research should be easily transferrable to other linear earth structures (such as dams, construction excavations, detention ponds, road embankments, etc.), and should significantly enhance reliability analysis across a wide array of structure types and geologic settings allowing a broad impact on future research, as well as geotechnical engineering practice.
Microbial reduction of metal-organic frameworks enables synergistic chromium removal
Creators: name: Springthorpe, Sarah Katherine
name: Dundas, Christopher M.
name: Keitz, Benjamin K.
Publisher: name: Springer Nature Limited
Year: 2019
Subjects: ammonia

description: Livestock manure wastewater, containing high level of ammonia, is a major source of water contamination, posing serious threats to aquatic ecosystems. Because ammonia is an important nitrogen fertilizer, efficiently recovering ammonia from manure wastewater would have multiple sustainability gains from both the pollution control and the resource recovery perspectives. Here we develop an electrochemical strategy to achieve this goal by using an ion-selective potassium nickel hexacyanoferrate (KNiHCF) electrode as a mediator. The KNiHCF electrode spontaneously oxidizes organic matter and uptakes ammonium ions (NH4+) and potassium ions (K+) in manure wastewater with a nutrient selectivity of ∼100%. Subsequently, nitrogen- and potassium-rich fertilizers are produced alongside the electrosynthesis of H2 (green fuel) or H2O2 (disinfectant) while regenerating the KNiHCF electrode. The preliminary techno-economic analysis indicates that the proposed strategy has notable economic potential and environmental benefits. This work provides a powerful strategy for efficient nutrient (NH4+ and K+) recovery and decentralized fertilizer and chemical production from manure wastewater, paving the way to sustainable agriculture.
Monotone traveling wavefronts of the KPP-Fisher delayed equation
Creators: name: Gomez, Adrian
name: Trofimchuk, Sergei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34K12, 35K57, 92D25

description: In the early 2000's, Gourley (2000), Wu et al. (2001), Ashwin et al. (2002) initiated the study of the positive wavefronts in the delayed Kolmogorov-Petrovskii-Piskunov-Fisher equation. Since then, this model has become one of the most popular objects in the studies of traveling waves for the monostable delayed reaction-diffusion equations. In this paper, we give a complete solution to the problem of existence and uniqueness of monotone waves in the KPP-Fisher equation. We show that each monotone traveling wave can be found via an iteration procedure. The proposed approach is based on the use of special monotone integral operators (which are different from the usual Wu-Zou operator) and appropriate upper and lower solutions associated to them. The analysis of the asymptotic expansions of the eventual traveling fronts at infinity is another key ingredient of our approach.
description: 25 pages, 2 figures, submitted
Genetic Control of Radical Crosslinking in a Semi-Synthetic Hydrogel
Creators: name: Graham, Austin J.
name: Dundas, Christopher M.
name: Hillsley, Alexander Veltman
name: Kasprak, Dain S.
name: Rosales, Adrianne M.
name: Keitz, Benjamin K.
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: extracellular electron transfer
hydrogels
living materials
synthetic biology

description: Enhancing materials with the qualities of living systems, including sensing, computation, and adaptation, is an important challenge in designing next-generation technologies. Living materials address this challenge by incorporating live cells as actuating components that control material function. For abiotic materials, this requires new methods that couple genetic and metabolic processes to material properties. Toward this goal, we demonstrate that extracellular electron transfer (EET) from Shewanella oneidensis can be leveraged to control radical cross-linking of a methacrylate-functionalized hyaluronic acid hydrogel. Cross-linking rates and hydrogel mechanics, specifically storage modulus, were dependent on various chemical and biological factors, including S. oneidensis genotype. Bacteria remained viable and metabolically active in the networks for a least 1 week, while cell tracking revealed that EET genes also encode control over hydrogel microstructure. Moreover, construction of an inducible gene circuit allowed transcriptional control of storage modulus and cross-linking rate via the tailored expression of a key electron transfer protein, MtrC. Finally, we quantitatively modeled hydrogel stiffness as a function of steady-state mtrC expression and generalized this result by demonstrating the strong relationship between relative gene expression and material properties. This general mechanism for radical cross-linking provides a foundation for programming the form and function of synthetic materials through genetic control over extracellular electron transfer.
Lifting of Tribocharged Grains by Martian Winds
Creators: name: Kruss, Maximilian
name: Salzmann, Tim
name: Parteli, Eric
name: Jungmann, Felix
name: Teiser, Jens
name: Schönau, Laurent
name: Wurm, Gerhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: It is a long-standing open question whether electrification of wind-blown sand due to tribocharging - the generation of electric charges on the surface of sand grains by particle-particle collisions - could affect rates of sand transport occurrence on Mars substantially. While previous wind tunnel experiments and numerical simulations addressed how particle trajectories may be affected by external electric fields, the effect of sand electrification remains uncertain. Here we show, by means of wind tunnel simulations under air pressure of 20 mbar, that the presence of electric charges on the particle surface can reduce the minimal threshold wind shear velocity for the initiation of sand transport, u*ft, significantly. In our experiments, we considered different samples, a model system of glass beads as well as a Martian soil analog, and different scenarios of triboelectrification. Furthermore, we present a model to explain the values of u*ft obtained in the wind tunnel that is based on inhomogeneously distributed surface charges. Our results imply that particle transport that subsides, once the wind shear velocity has fallen below the threshold for sustained transport, can more easily be restarted on Mars than previously thought.
title: The Poincaré Conjecture
Creators: name: Peck, Joseph D.
Publisher: name: Utah State University
Year: 1971

description: The central theme for this paper is provided by the following three statements:
(1) Every compact connected 1-manifold is S1.
(2) Every compact connected simply connected 2-manifold is S2.
(3) Every compact connected simply connected 3-manifold is S3.
We provide proofs of statements (1) and (2). The veracity of the third statement, the Poincaré Conjecture, has not been determined. It is known that should a counter-example exist it can be found by removing from S3 a finite collect ion of solid tori and sewing them back differently. We show that it is not possible to find a counterexample by removing from S3 a single solid torus of twist knot type or torus knot type and sewing it back differently. We treat as special cases a solid torus of trivial knot type and trefoil knot type.
title: Μεγάλα δεδομένα στη ναυτιλία
title: Big data in shipping
titleType: AlternativeTitle
Creators: name: Βαλαωρίτου, Ειρήνη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Μεγάλα δεδομένα
subject: Big data

description: Στην παρούσα διατριβή αναλύονται κάποιες από τις βασικές εφαρμογές των Μεγάλων Δεδομένων και των νέων τεχνολογιών, καθώς και οι προκλήσεις που αυτές φέρουν. Ο κλάδος της ναυτιλίας δεν θα μπορούσε να μείνει ανεπηρέαστος μπροστά στις νέες τεχνολογίες και καινοτομίες που φέρει η εποχή της ψηφιοποίησης, των Μεγάλων Δεδομένων και της τεχνητής νοημοσύνης. Ήδη πολλές ναυτιλιακές εταιρείες επενδύουν σε τέτοιες εφαρμογές, τόσο για την ενίσχυση της ασφάλειας στη θάλασσα και όσο και για την προστασία του περιβάλλοντος και τη βελτιστοποίηση της απόδοσης των πλοίων. Προκειμένου να προωθηθεί αυτή η τάση, και να δοθεί μία εικόνα των σημερινών εφαρμογών, η διατριβή προσπαθεί να εντοπίσει τις κυριότερες εφαρμογές όπως επίσης και τις σημαντικές προκλήσεις για το ναυτιλιακό κλάδο ως προς την αξιοποίηση των μεγάλων δεδομένων. Η ανάγκη λήψης αποφάσεων μέσα από δεδομένα σε πραγματικό χρόνο είναι μεγάλη. Τα οφέλη της βελτιστοποίησης και του αυτοματισμού γίνονται ολοένα και πιο ξεκάθαρα. Αρχικά, δίνονται οι βασικοί ορισμοί όσον αφορά τα Μεγάλα Δεδομένα και των χαρακτηριστικών τους. Στη συνέχεια γίνεται μία επισκόπηση βασικών εφαρμογών στη ναυτιλία. Ξεκινώντας από τους τύπους και τις πηγές δεδομένων στη ναυτιλία, γίνεται ιδιαίτερη αναφορά στις δύο από τις βασικότερες πηγές δεδομένων που είναι το Σύστημα Καταγραφής των Δεδομένων Ταξιδιού και το Αυτόματο Σύστημα Αναγνωρίσεως. Σε αυτή την ενότητα εξετάζονται επίσης εφαρμογές των Μεγάλων Δεδομένων που έχουν να κάνουν με την πράσινη ναυτιλία και την απόδοση του πλοίου, τα αυτόνομα πλοία και τα έξυπνα λιμάνια. Στην επόμενη ενότητα γίνεται ανάλυση των προκλήσεων που φέρει η είσοδος των εφαρμογών των Μεγάλων Δεδομένων στη ναυτιλία. Στην παρούσα διατριβή, οι προκλήσεις χωρίζονται στις εξής τέσσερις κατηγορίες: τεχνολογικές προκλήσεις, προκλήσεις σχετικές με την ασφάλεια, προκλήσεις σχετικές με τους ανθρώπινους πόρους και τέλος προκλήσεις σχετικές με τη διακυβέρνηση των δεδομένων. Συνολικά, τα Μεγάλα Δεδομένα προκύπτουν από πολλές και διαφορετικές πηγές, που περιλαμβάνουν από αισθητήρες εντός του πλοίου έως και μετεωρολογικά δεδομένα. Με την ανάλυσή τους και τη χρήση προηγμένων τεχνολογιών μπορεί να επιτευχθεί καλύτερη απόδοση του πλοίου, με χαμηλότερη κατανάλωση καυσίμων. Αυτές οι δύο παράμετροι οδηγούν κατ' επέκταση σε χαμηλότερα κόστη και μείωση των εκπομπών του διοξειδίου του άνθρακα και των αερίων του θερμοκηπίου. Παράλληλα, η ανάγκη για μείωση του περιβαλλοντικού αποτυπώματος αφορά και στα λιμάνια. Εφαρμογές τεχνολογιών που αξιοποιούν δεδομένα σε πραγματικό χρόνο, αλλά και ιστορικά δεδομένα, συντελούν στη δημιουργία πράσινων λιμανιών.
The Physical Properties and Effective Temperature Scale of O-type Stars as a Function of Metallicity. III. More Results from the Magellanic Clouds
Creators: name: Massey, Philip
name: Zangari, Amanda M.
name: Morrell, Nidia I.
name: Puls, Joachim
name: DeGioia-Eastwood, Kathleen
name: Bresolin, Fabio
name: Kudrtizki, Rolf-Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to better determine the physical properties of hot, massive stars as a function of metallicity, we obtained very high SNR optical spectra of 26 O and early B stars in the Magellanic Clouds. These allow accurate modeling even in cases where the He I 4471 line has an equivalent width of only a few tens of mA. The spectra were modeled with FASTWIND, with good fits obtained for 18 stars; the remainder show signatures of being binaries. We include stars in common to recent studies to investigate possible systematic differences. The "automatic" FASTWIND modeling method of Mokiem and collaborators produced temperatures 1100 K hotter on the average, presumably due to the different emphasis given to various temperature-sensitive lines. More significant, however, is that the automatic method always produced some "best" answer, even for stars we identify as composite (binaries). The temperatures found by the TLUSTY/CMFGEN modeling of Bouret, Heap, and collaborators yielded temperatures 1000 K cooler than ours, on average. Significant outliers were due either to real differences in the data (some of the Bouret/Heap data were contaminated by moonlight continua) or the fact we could detect the HeI line needed to better constrain the temperature. Our new data agrees well with the effective temperature scale we presented previously. We confirm that the "Of" emission-lines do not track luminosity classes in the exact same manner as in Milky Way stars. We revisit the the issue of the "mass discrepancy", finding that some of the stars in our sample do have spectroscopic masses that are significantly smaller than those derived from stellar evolutionary models. We do not find that the size of the mass discrepancy is simply related to either effective temperature or surface gravity.
description: ApJ, in press
title: Effects of a Parent's Intervention to Decrease Stereotypic Behavior and Increase Interactions Using Self-Management Treatment for Students with Autism in Korea
Creators: name: Kim, Jeongil
Publisher: name: Utah State University
Year: 1996

description: The present investigation examined the effects of a parent's intervention to teach students with autism self-management to decrease their stereotypic behaviors. A time-lagged ABA (A represents the first baseline, B does intervention, and A does the second baseline) design was used. Three mothers of children with autism were trained to reduce their children's stereotypic behaviors using a self-monitoring strategy. The training for the parent was conducted in two settings after the first baseline condition. A classroom was used for the first training session and the home was used for the second training session. The intervention by the parent was conducted in the child's natural home. The results of this study revealed the following. First, the intervention decreased the students ' stereotypic behaviors. Second, two students maintained the decreased frequency of stereotypic behavior in a nonintervention condition, the second baseline, when the parent withdrew the intervention for a month. Third, the students showed slight behavior change on their interactive behaviors with their family members after the intervention was withdrawn.
title: The Effectiveness of Categorical Variables in Discriminant Function Analysis
Creators: name: Waite, Preston Jay
Publisher: name: Utah State University
Year: 1971

description: A preliminary study of the feasibility of using categorical variables in discriminant function analysis was performed. Data including both continuous and categorical variables were used and predictive results examined.
The discriminant function techniques were found to be robust enough to include the use of categorical variables.
Some problems were encountered with using the trace criterion for selecting the most discriminating variables when these variables are categorical. No monotonic relationship was found to exist between the trace and the number of correct predictions.
This study did show that the use of categorical variables does have much potential as a statistical tool in classification procedures. (50 pages)
Evolution of the Binary Fraction in Dense Stellar Systems
Creators: name: Fregeau, J. M.
name: Ivanova, N.
name: Rasio, F. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using our recently improved Monte Carlo evolution code, we study the evolution of the binary fraction in globular clusters. In agreement with previous N-body simulations, we find generally that the hard binary fraction in the core tends to increase with time over a range of initial cluster central densities for initial binary fractions
description: 8 pages, 7 figures in emulateapj format. Submitted to ApJ
title: Novel Statistical Models for Quantitative Shape-Gene Association Selection
Creators: name: Dai, Xiaotian
Publisher: name: Utah State University
Year: 2017

description: Other research reported that genetic mechanism plays a major role in the development process of biological shapes. The primary goal of this dissertation is to develop novel statistical models to investigate the quantitative relationships between biological shapes and genetic variants. However, these problems can be extremely challenging to traditional statistical models for a number of reasons: 1) the biological phenotypes cannot be effectively represented by single-valued traits, while traditional regression only handles one dependent variable; 2) in real-life genetic data, the number of candidate genes to be investigated is extremely large, and the signal-to-noise ratio of candidate genes is expected to be very high. In order to address these challenges, we propose three statistical models to handle multivariate, functional, and multilevel functional phenotypes, with applications to biological shape data using different shape descriptors. To the best of our knowledge, there is no statistical model developed for multilevel functional phenotypes. Even though multivariate regressions have been well-explored and these approaches can be applied to genetic studies, we show that the model proposed in this dissertation can outperform other alternatives regarding variable selection and prediction through simulation examples and real data examples. Although motivated ultimately by genetic research, the proposed models can be used as general-purpose machine learning algorithms with far-reaching applications.
La condizione umana tra tragico e libertà. Una rilettura pedagogica della Nascita della tragedia di F. Nietzsche
Creators: name: Cocco, Veronica
Publisher: name: Studi sulla Formazione
Year: 2011

description: Nietzsche’s Birth of Tragedy is also and especially a reflection, elaborated through the theater, about the human condition. A reflection shown by its own support- ing structures: the tragic and the freedom. Nietzsche, through an analysis of the Myth, develops not only a vision of the existence but also an important and topical educational project that focuses the tragic, the finitude and vulnerability of human being and shape it to/in/for freedom.
description: Studi sulla Formazione, Anno XIV, I-2011
Additional file 2 of Repeatability of radiomics studies in colorectal cancer: a systematic review
Creators: name: Liu, Ying
name: Wei, Xiaoqin
name: Feng, Xu
name: Liu, Yan
name: Feng, Guiling
name: Du, Yong
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 2: Table 1. Study characteristics of 188 papers. Table 2. RQS of studies. Table 3. Risk of bias in individualstudies.
Rappresentazioni Sociali e decostruzione pedagogica. Analisi dello stigma nell’ambito della salute mentale
Creators: name: Orefice, Carlo
Publisher: name: Studi sulla Formazione
Year: 2013

description: Starting from a perspective that considers relationship between the individual, the social and the media system as closely interconnected and interactive, we want to check out how, in building collective forms of knowledge and their pedagogical deconstruction, representations of mental suffering have a strategic importance in guiding beliefs and operational strategies of care professionals and of those who daily face it, working with and for it. According to the Author in fact, thinking about the construction / deconstruction of the stigma in the field of mental health, provides a useful "model" teaching to understand, and bring out, the implicit and the ideological substrates that operate in an unconscious way in the complexity of pedagogical sciences.
description: Studi sulla Formazione, Anno XVI, I-2013
Diagnostik und Früherkennung von Herzinsuffizienz mit erhaltener Auswurffraktion (HFpEF): Von der Validierung der Diagnose zur Entwicklung innovativer Deformitätsanalysen mittels Kardio-MRT
Creators: name: Hashemi, Djawid
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: heart failure
subject: CMR
subject: cardiovascular magnetic resonance
subject: diastolic dysfunction
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Diese Arbeit untersucht Herzinsuffizienz, insbesondere HFpEF, und zeigt innovative Kardio- MRT-Methoden für Diagnostik und Präventions- sowie Behandlungsstrategien auf. HFpEF ist eine Erkrankung mit limitierten Behandlungsmöglichkeiten und komplexer Diagnostik und Risikostratifizierung. Der HFA-PEFF-Algorithmus verspricht eine adäquate Diagnosestellung der HFpEF. Dass dieser Algorithmus zuverlässige Prognosen für Morbidität und Mortalität bei HFpEF-Patient*innen bietet, wurde untersucht und bestätigt. Aufgrund der limitierten therapeutischen Maßnahmen steht hier vor allem die Prävention im Vordergrund der Behandlungsstrategie. Die Notwendigkeit eines besseren Managements von HFpEF ergibt sich auch aus den gesundheitsbezogenen Kosten der ambulanten HFpEF-Patient*innen der ALDO-DHF-Studie, bei denen Krankenhausaufenthalte die Hauptkostenfaktoren sind. Um eine Risikostratifizierung für HFpEF zu etablieren, wurde die Myokarddeformation im Kontraktionsablauf mittels Kardio-MRT in höherer Granularität untersucht, wobei einzelne myokardiale Segmente und das resultierende Verteilungsmuster der Deformationsveränderung ausgewertet wurden. Mit dieser Methode können Proband*innen mit kardiovaskulären Risikofaktoren von denen ohne Risikofaktoren unterschieden werden, da sie in Ruhe ein Verteilungsmuster wie HFpEF-Patient*innen und unter Belastung ein Muster wie Gesunde zeigen. Zudem konnte der Trend identifiziert werden, dass dieser Verteilungsparameter auch die funktionale Kapazität von HI-Patientinnen abbildet, selbst wenn die LVEF erhalten ist. Die gewonnenen Erkenntnisse könnten dazu beitragen, die Versorgung von Patient*innen mit HI zu verbessern, indem sie neue Wege zur Identifizierung von Risikopatient*innen und verbesserte Diagnosemethoden aufzeigen, die zu präventiven Behandlungsstrategien führen können. Die Validierung der prognostischen Bedeutung von HI-Parametern des Kardio-MRT in Interventionsstudien bildet den nächsten Schritt, da neben Validierung auch eine klinische Konsequenz prospektiv mit den Methoden verbunden und untersucht wird. Diese Kombination verspricht, die Behandlung von HFpEF-Patient*innen zu optimieren und dem Kardio-MRT einen angemessenen Stellenwert im Management-Prozess der Erkrankten und der von HI Bedrohten zu verleihen.
title: Urban Bobcat (Lynx rufus) Ecology in the Dallas-Fort Worth, Texas Metroplex
Creators: name: Golla, Julie M.
Publisher: name: Utah State University
Year: 2017

description: Urban landscapes are quickly replacing native habitat around the world. As wildlife and people increasingly overlap in their shared space and resources, so does the potential for human-wildlife conflict, especially with predators. Bobcats (Lynx rufus) are a top predator in several urban areas across the United States and a potential contributor to human-carnivore conflicts. This study evaluated the movements and habitat use of bobcats in the Dallas-Fort Worth (DFW), Texas metroplex. Spatial data were collected from 10 bobcats via Global Positioning Satellite (GPS) for approximately one year. Average home range size was 4.60 km2 (n=9, SE=0.99 km2) for all resident bobcats, 3.48 km2 (n=5, SE=1.13 km2) for resident females, and 6.00 km2 (n=4, SE=1.61 km2) for resident males. Resource selection function (RSF) models show that bobcats avoid areas close to and far from grasslands and low-medium development, while selecting for these areas at intermediate distances. Bobcats also selected areas closer to developed open space, agricultural areas, and railroads. In addition, camera trap data analyzed with spatially explicit capture-recapture (SECR) models informed by the RSF results estimated a population density of 0.64 bobcats/km2 (SE = 0.22). Bobcats in DFW have significantly smaller home ranges and occur at higher densities compared to rural bobcat populations. Home ranges were also slightly smaller and densities higher than the most closely similar peri-urban bobcat studies. These differences likely arise due to the abundant urban prey species the DFW landscape provides despite limited space and habitat for bobcats. The dense urban development surrounding this population of bobcats may also discourage dispersing from the area, and contributing to higher densities. These results provide information to facilitate management of urban bobcats by providing new insight into how bobcats live amidst people in urban areas.
EPR studies of aromatic nitrenes
Creators: name: Dickinson, James Russell
Publisher: name: University of British Columbia
Year: 2010

description: The studies presented in this thesis are in two areas. An investigation of aromatic nitrene molecules using EPR spectroscopy was undertaken. This revealed a general tendency for these molecules to exhibit two forms when trapped in a crystalline lattice. This is qualitatively interpreted as a perturbing effect of nitrogen evolved during generation from the azide. Single crystal experiments were made on 2,4,6-tribromophenyl nitrene, which exhibited an unusually large anisotropy in the zero field splitting, implying a bent structure. Temperature variation of several aromatic nitrene zero field splittings were made. The variation was interpreted as thermal averaging amongst states possessing different zero field parameters. The nature of these states however, could not be inferred. The variation is compared with similar studies. A computer program to least squares fit EPR angular data to a spin Hamiltonian has been written. This programme was used to obtain a description of the angularly dependent EPR data from an aromatic nitrene, and also for a radical species with a large hyperfine interaction.
Alert Citizenry as an Antidote to War
Creators: name: Corneo, Giacomo
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: political leader
subject: people`s control
subject: war
subject: peace
subject: war prevention
subject: peace agreement
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: What can be done to reduce the likelihood of future wars? While states’ decisions that bear on war are ultimately made by their political leaders, strengthening ordinary citizens’ control of those leaders is vital to reduce the risk of future wars. This thesis can be broken down into two claims: first, there is a war bias of political leaders; second, people’s control over those leaders may successfully counteract that bias. Claim n°1 has that in some situations political leaders and citizens have substantially divergent interests with respect to policies that risk the outbreak of war. Political leaders may have a war bias that is so strong that they prefer war occurring with high probability whereas citizens prefer peace occurring with high probability. Claim n°2 has that in some situations strengthening citizens’ control of political decision-makers may be decisive to prevent a war. As I’ll argue shortly, this empowerment can be beneficial only if sufficiently many citizens have previously become alert by productively engaging in a distinctive cognitive effort. This requirement points to a precise responsibility of intellectuals.
On massive spin 2 electromagnetic interactions
Creators: name: Zinoviev, Yu. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate electromagnetic interactions for massive spin 2 particles in (A)dS space at linear approximation using gauge invariant description for such massive particles. We follow bottom-up approach, i.e. we begin with the introduction of minimal interaction and then proceed by adding non-minimal interactions with higher and higher number of derivatives together with corresponding non-minimal corrections to gauge transformations until we are able to restore gauge invariance broken by transition to gauge covariant derivatives. We manage to construct a model that smoothly interpolates between massless particle in (A)dS space and massive one in a flat Minkowski space. Also we reproduce the same results in a frame-like formalism which can be more suitable for generalizations on higher spins.
description: 24 pages, no figures. Clarifications and references added. Version to appear in Nucl. Phys. B
title: Non-Methane Hydrocarbon Source Apportionment and BTEX Risk Assessment of Winter 2015 in Roosevelt, Utah
Creators: name: Lamb, Jerimiah
Publisher: name: Utah State University
Year: 2017

description: Non-Methane Hydrocarbons (NMHC) monitored in Roosevelt Utah including Benzene, Toluene, Ethylbenzene and Xylene (collectively known as BTEX) are associated with deleterious effects including cancer. This study was designed to assess the origin and effect of the toxicants and addressed two points: 1) Source identification using the USEPA’s Positive Matrix Factorization (PMF) and NOAA’s Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and 2) A human health risk assessment based on ambient concentrations of BTEX collected at the Roosevelt site. Model fit indicated that the primary contributor to total NMHCs was local oil and gas operations and was supported by previous assessments. Assessment of ambient BTEX concentrations was associated with slightly elevated carcinogenic risk.
N-sociable Heronian Triangles
Creators: name: Shalqini, Nart
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Overview (math.HO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: A Heronian triangle is a triangle that has integer side lengths and integer area. Praton and Shalqini [1] define amicable Heronian triangles to be two Heronian triangles where the area of one equals the perimeter of the other, and vice versa; analogous to the concept of amicable numbers. In this paper, we generalize this notion to n-sociable Heronian triangles and characterize them for each n.
description: To appear in the Pi Mu Epsilon Journal