cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probabilistic tomography of atmospheric parameters from GNSS data
Creators: name: Ortolani, Alberto <1969>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: FIS/06 Fisica per il sistema terra e il mezzo circumterrestre

description: The objective of the work is the evaluation of the potential capabilities of navigation satellite signals to retrieve basic atmospheric parameters. A capillary study have been performed on the assumptions more or less explicitly contained in the common processing steps of navigation signals. A probabilistic procedure has been designed for measuring vertical discretised profiles of pressure, temperature and water vapour and their associated
errors. Numerical experiments on a synthetic dataset have been performed with the main objective of quantifying the information that could be gained from such approach, using
entropy and relative entropy as testing parameters. A simulator of phase delay and bending of
a GNSS signal travelling across the atmosphere has been developed to this aim.
title: Geometric Aspects of Second-Order Scalar Hyperbolic Partial Differential Equations in the Plane
Creators: name: Jurás, Martin
Publisher: name: Utah State University
Year: 1997

description: The purpose of this dissertation is to address various geometric aspects of second-order scalar hyperbolic partial differential equations in two independent variables and one dependent variable
F(x, y, u, u_x, u_y, u_xx, u_xy, u_yy )= 0 (1)
We find a characterization of hyperbolic Darboux integrable equations at level k (1) in terms of the vanishing of the generalized Laplace invariants and provide an invariant characterization of various cases in the Goursat general classification of hyperbolic Darboux integrable equations (1). In particular we give a contact invariant characterization of equations integrable by the methods of general and intermediate integrals. New relative invariants that control the existence of the first integrals of the characteristic Pfaffian systems are found and used to obtain an invariant characterization for the class of -Gordon equations. A notion of a hyperbolic Darboux system is introduced and we show by examples that the classical Laplace transformation is just a special case of a diffeomorphism of hyperbolic Darboux systems. We also construct new examples of homomorphisms between certain hyperbolic systems. We characterize Monge-Ampere equations and explicitly exhibit two invariants whose vanishing is a necessary and sufficient condition for the equation to be of the Monge-Ampere type. The solution to the inverse problem of the calculus of variations for hyperbolic equations (1) in terms of the generalized Laplace invariants is presented. We also obtain some partial results on symplectic conservation laws. We characterize, up to contact equivalence, some classical equations using the generalized Laplace invariants. These results contain characterizations of the wave, Liouville, Klein-Gordon, and certain types of Euler-Poisson equations.
The magnetic field toward the young planetary nebula K~3-35
Creators: name: Gomez, Y.
name: Tafoya, D.
name: Anglada, G.
name: Miranda, L. F.
name: Torrelles, J. M.
name: Patel, N. A.
name: Franco-Hernandez, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: K 3-35 is a planetary nebula (PN) where H2O maser emission has been detected, suggesting that it departed from the proto-PNe phase only some decades ago. Interferometric VLA observations of the OH 18 cm transitions in K~3-35 are presented.OH maser emission is detected in all four ground state lines (1612, 1665, 1667, and 1720 MHz). All the masers appear blueshifted with respect to the systemic velocity of the nebula and they have different spatial and kinematic distributions.The OH 1665 and 1720 MHz masers appear spatially coincident with the core of the nebula, while the OH 1612 and 1667 MHz ones exhibit a more extended distribution. We suggest that the 1665 and 1720 masers arise from a region close to the central star, possibly in a torus, while the 1612 and 1667 lines originate mainly from the extended northern lobe of the outflow. It is worth noting that the location and velocity of the OH 1720 MHz maser emission are very similar to those of the H2O masers (coinciding within 0.1" and ~2 km/s, respectively). We suggest that the pumping mechanism in the H2O masers could be produced by the same shock that is exciting the OH 1720 MHz transition. A high degree of circular polarization (>50%) was found to be present in some features of the 1612, 1665, and 1720 MHz emission.For the 1665 MHz transition at ~ +18 km/s the emission with left and right circular polarizations (LCP and RCP) coincide spatially within a region of ~0.03" in diameter.Assuming that these RCP and LCP 1665 features come from a Zeeman pair, we estimate a magnetic field of ~0.9 mG within 150 AU from the 1.3 cm continuum peak. This value is in agreement with a solar-type magnetic field associated with evolved stars.
description: 6 pages, 2 tables, 4 figures, ApJ accepted
title: Hopf Bifurcation in a Parabolic Free Boundary Problem
Creators: name: Lee, Yoon-Mee
Publisher: name: Utah State University
Year: 1992

description: We deal with a free boundary problem for a nonlinear parabolic equation, which includes a parameter in the free boundary condition. This type of system has been used in models of ecological systems, in chemical reactor theory and other kinds of propagation phenomena involving reactions and diffusion.
The main purpose of this dissertation is to show the global existence, uniqueness of solutions and that a Hopf bifurcation occurs at a critical value of the parameter r. The existence and uniqueness of the solution for this problem are shown by finding an equivalent regular free boundary problem to which existence results can be applied. We then show that as the bifurcation parameter r decreases and passes through a critical value rc, the stationary solution loses stability and a stable periodic solution appears. Several figures have been included, which illustrate this transistion. The pascal source program used in the numerical simulation is included in an appendix.
Urea metabolism by the marine cryptomonad, Rhodomonas Lens
Creators: name: Johnson, Sherran Ruth
Publisher: name: University of British Columbia
Year: 2010

description: The effect of urea on a marine cryptomonad, Rhodomonas lens, was investigated. Cells from a nitrate enriched, natural sea water medium were acclimated to synthetic sea water with either nitrate (control medium) or urea (experimental medium) as the sole nitrogen source. Cells acclimated readily to the control medium; acclimation to the experimental medium was erratic. Control and experimental cells were taken from media on which good growth habitually occurred. Tested optimal growth conditions occurred at 22°C and a 16:8 hour, light:dark cycle with fluorescent light at approximately 150 foot-candles. Growth was followed turbidimetrically and by direct cell count. Control cultures exhibited the typical lag, logarithmic and stationary phases. The stationary phase merged into a gradual decline phase. Culture colour proceeded from a red-pink during early phases to a red-orange, then green during stationary-decline phase. Initially, ultrastructure was typical of cryptomonads: cells exhibited a bi-lobed chloroplast having thylakoids, often arranged in bands of two, with a loculus size of 110-260 Å. Occasional lipid droplets were present within the cytoplasm. Stationary-decline phase showed an accumulation of a lipid-like material. Thylakoids were arranged singly; loculus size being decreased to 70-150 Å. Experimental cultures at concentrations less than 1.25 mM urea exhibited similar growth to control cultures. At urea concentrations equal to or greater than 1.25 mM urea, cells during lag and early logarithmic phases showed a lipid-like accumulation; during later logarithmic phase, lipid droplets were observed. Stationary phase was short and cells proceeded directly into a rapid decline phase. Concomitantly, an increase in pH occurred and cultures became a creamy white in colour. To test electrolytic and pH effects, NaOH and NH₄OH were added to a healthy control culture. Increased pH with NaOH had no gross effect on the cultures: increased pH with NH₄OH caused a lytic effect similar to lysis observed during decline phase of experimental cultures. Observations on control cells during stationary-decline phases suggest a lack of available nitrogen, probably due to depletion: observations on experimental cells during lag and early logarithmic phases are similar, thus suggesting a lack of nitrogen. As sufficient urea is present, it is suggested that the uptake and/or metabolism of urea in experimental cells is inefficient, causing nitrogen stress. Increase in pH prior to decline phase, and the results of electrolytic experiments suggest that urea is converted into ammonia and excess ammonia is released into the medium. The increasing ammonia concentration becomes toxic and accelerating cell lysis thus results in a decline phase.
Multidimensional gravity in non-relativistic limit
Creators: name: Eingorn, Maxim
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is found the exact solution of the Poisson equation for the multidimensional space with topology $M_{3+d}=\mathbb{R}^3\times T^d$. This solution describes smooth transition from the newtonian behavior $1/r_3$ for distances bigger than periods of tori (the extra dimension sizes) to multidimensional behavior $1/r^{1+d}_{3+d}$ in opposite limit. In the case of one extra dimension $d=1$, the gravitational potential is expressed via compact and elegant formula. It is shown that the corrections to the gravitational constant in the Cavendish-type experiment can be within the measurement accuracy of Newton's gravitational constant $G_N$. It is proposed models where the test masses are smeared over some (or all) extra dimensions. In 10-dimensional spacetime with 3 smeared extra dimensions, it is shown that the size of 3 rest extra dimensions can be enlarged up to submillimeter for the case of 1TeV fundamental Planck scale $M_{Pl(10)}$. In the models where all extra dimensions are smeared, the gravitational potential exactly coincides with the newtonian one. Nevertheless, the hierarchy problem can be solved in these models.
description: RevTex4, 4 pages, 3 figures
HARNESSING THE POTENTIALS OF INDIGENOUS SHIPPING INDUSTRY IN NIGERIAN BLUE ECONOMY UNDER THE CABOTAGE ACT 2003
Creators: name: NZERIBE EJIMNKEONYE ABANGWU
name: OYAGIRI BUDUKA ISAAC
Publisher: name: Zenodo
Year: 2024
Subjects: Blue Economy; Cabotage Act; Indigenous Shipping; Local Capacity; Relevant Agencies; Vessel Financing.

description: Abstract

Shipping industry sub-sector of the Nigerian blue economy has over the years played a key role in the development of Nigerian economy. However, several factors such as lack of adequate funding, insecurity, opportunity for adequate training, etc. converged to making it difficult to enhance adequate development of the sub-sector. This necessitated the establishment of the Coastal and Inland Shipping Act 2003 (Cabotage Act). This paper discussed the effectiveness or otherwise of the provisions of the Cabotage Act in enhancing the potentials of the shipping industry under the Nigerian blue economy. This paper employed a doctrinal legal research method. The paper relied on content analytical methodology of study. This paper found that despite the laudable efforts made by the Cabotage Act, there were still challenges in terms of the implementation of the law, corruption and inadequate funding and training. This paper concluded that the Cabotage Act 2003 does not provide a formidable and sustainable legal framework for enhancing the Nigerian shipping industry. It recommended a robust amendment of the Cabotage Act to accommodate the dynamics of the shipping industry. It further recommended the proper funding of the security operations to tackle piracy and adequate punishment for corrupt practices.
Quantum walk on the line with quantum rings
Creators: name: Kálmán, Orsolya
name: Kiss, Tamás
name: Földi, Péter
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to implement the one-dimensional coined quantum walk with electrons transported through a two-dimensional network of spintronic semiconductor quantum rings. The coin degree of freedom is represented by the spin of the electron, while the discrete position of the walker corresponds to the label of the rings in one of the spatial directions in the network. We assume that Rashba-type spin-orbit interaction is present in the rings, the strength of which can be tuned by an external electric field. The geometry of the device, together with the appropriate spin-orbit interaction strengths, ensure the realization of the coin-toss (i.e. spin-flip) and the step operator.
description: 7 pages, 4 figures. Text slightly modified, Appendix extended, Refs. added. To be published in Phys. Rev. B
Fault-tolerant quantum computation versus Gaussian noise
Creators: name: Ng, Hui Khoon
name: Preskill, John
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the robustness of a fault-tolerant quantum computer subject to Gaussian non-Markovian quantum noise, and we show that scalable quantum computation is possible if the noise power spectrum satisfies an appropriate "threshold condition." Our condition is less sensitive to very-high-frequency noise than previously derived threshold conditions for non-Markovian noise.
description: 30 pages, 6 figures
EXPERIENCES AND EXPECTATIONS: A QUALITATIVE STUDY TO UNDERSTAND THE PERCEPTION OF KEY STAKEHOLDERS ON THE AYUSHMAN BHARAT SCHEME
Creators: name: Dr. Sandeep Soni
name: Dr. Naresh Godara
name: Dr. Akash Kumar Lal
name: Dr. Deepak Vishwakarma
name: Dr. Shikha Jain
Publisher: name: Zenodo
Year: 2024
Subjects: Ayushman Bharat Scheme, Pradhan Mantri Jan Arogya Yojana (PMJAY), Health Insurance. Health Care Expenditure.

description: Abstract

Introduction: Government of India launched Ayushman Bharat Yojna in September 2018, this is also known as Pradhan Mantri Jan Arogya Yojana (PM- JAY) and National Health Protection Scheme (NHPS), which provide a coverage of five lakhs per household for taking health care services during hospitalization. This scheme expands its coverage with time and a step towards universal health coverage. Aim: A Qualitative Study to understand the perception of key stakeholders on the Ayushman Bharat Scheme. Methodology: The study was conducted in Vadodara- Gujarat. In-depth interviews with 16 key stakeholders were conducted. Results: Thematic analysis of interviews revealed five key themes: Knowledge about the Ayushman Bharat scheme and various components of Ayushman Bharat scheme, Perception regarding the Ayushman Bharat (PM- JAY), Practice if someone in the family become ill, Gaps, barriers & suggestions by key stakeholders for Ayushman Bharat. Conclusion: The study highlights the need to increase awareness and coverage of Ayushman Bharat scheme. Accessibility and affordability of treatment increases for those who have Ayushman Bharat card.
Giustizia sanitaria e diseguaglianze globali in salute: il caso dell'aiuto allo sviluppo in sanità
Justice in health care and global inequalities in health: the case of official development aid
Creators: name: Pacileo, Guglielmo <1972>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: IUS/20 Filosofia del diritto

description: Life expectancy at birth is the average number of years that a group of people born in the same year should live. The estimate for those born in 2010 is 80.2 years for Italy. On the other side of the chart are a number of countries in sub Saharan Africa. Haiti is in last place: children born in this country in 2010 have a life expectancy by an average of even 30 years, fifty in less than peers born in Italy. From a bioethical point of view, the first question that arises is: Is it right? Is it right that there is such inequality in health? The answer is simple: it is not right. But if we ask ourselves what are the best solution to remedy this situation, the answers become more than one. The differences in life expectancy depends on many factors, including no doubt the effectiveness of health systems. The scope of this work is precisely that of justice in health care and how the different general concepts related to it can be applied in health care settings with very limited financial and human resources. The first chapter describes the main inequalities in global health. The second discusses the main theories of justice. In the next chapter we reason on official development assistance and health cooperation. In the fourth we analyze the contribution of theories of justice through such issues as equity in health, the right of access to health services and right to health. In the fifth chapter the aim is to reason about global justice, the role of health in this context and how the official development assistance in health can contribute.
High spectral resolution multi-tone Spacecraft Doppler tracking software: Algorithms and implementations
Creators: name: Calvés, Guifré Molera
name: Pogrebenko, Sergei V.
name: Wagner, Jan F.
name: Cimò, Giuseppe
name: Gurvits, Leonid I.
name: Bocanegra-Bahamón, Tatiana M.
name: Duev, Dmitry A.
name: Nunes, Nelson V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present a software package for single-dish data processing of spacecraft signals observed with VLBI-equipped radio telescopes. The Spacecraft Doppler tracking (SDtracker) software allows one to obtain topocentric frequency detections with a sub-Hz precision, and reconstructed and residual phases of the carrier signal of any spacecraft or landing vehicle at any location in the Solar System. These data products are estimated using the ground-based telescope's highly stable oscillator as a reference, without requiring an a priori model of the spacecraft dynamics nor the downlink transmission carrier frequency. The software has been extensively validated in multiple observing campaigns of various deep space missions and is compatible with the raw sample data acquired by any standard VLBI radio telescope worldwide. In this paper, we report the numerical methodology of SDtracker, the technical operations for deployment and usage, and a summary of use cases and scientific results produced since its initial release.
description: The paper has been accepted for publication in PASA
How to analyse blade aerodynamics on an operating wind turbine with low-cost pressure sensors?
Creators: name: Deparday, Julien
name: Marikovskiy, Yuriy
name: Polonelli, Tommaso
name: Clark, Thomas
name: Barber, Sarah
Publisher: name: Zenodo
Year: 2023
Subjects: wind energy
aerodynamic measurements
MEMS

description: With the growth of the wind turbine size, the aerodynamic performance of the rotor blades becomes more and more complex to evaluate, due to the large spectrum of encountered atmospheric wind conditions and the large deflections of the blade. The evaluation of the aerodynamic performance in real conditions is valuable for both wind turbine design and operational optimisation and can be achieved through aerodynamic measurements on the rotor blades. However, field measurements are scarce, due to the complexity and the cost of the installation. Recent developments in electronics allow the implementation of internet-connected, low-power and robust sensors at low cost, which enable new possibilities for field measurements on rotor blades. These sensors come, however, with lower sensitivity, precision, and frequency ranges, but can still provide useful aerodynamic insights, if the raw data is corrected using the fusion of different sensor types during the post-processing phase. In this work, we demonstrate a process for analysing time-resolved pressure data on operating rotor blades using low-cost pressure sensors. The process, comprising the data acquisition, the correction, and the post-processing of the measurement data, is presented using a real example from an instrumented operating 6 kW wind turbine. Absolute pressure sensors, differential pressure sensors and an inertial measurement unit are installed together as a flexible sensor node attached on a rotor blade (figure 1). The system is wireless and low power, making it thin and easy to install without damaging the blade. The position of the sensors on the blade is measured with a precision of less than one millimetre using photogrammetry. The data are automatically stored in a BigQuery space, capable of handling very large databases. The raw data is imported into a collaborative Jupyter notebook, and then corrected and processed to be able to analyse the aerodynamic performance for different wind conditions. We show that the accelerations and rotational speed recorded by the sensor node can be used to remove the influence of the hydrostatic pressure. We demonstrate that the centrifugal acceleration does not significantly disturb the pressure measurements and describe how we take into account the atmospheric pressure variations. The measurement system can be easily installed and used on multi-megawatt wind turbines, for example to help validate the design of prototypes as well as to assess the performance of wind turbines over the longer term for operators.
title: The Red Top Model: A Landscape-Scale Integrodifference Equation Model of the Mountain Pine Beetle-Lodgepole Pine Forest Interaction
Creators: name: Heavilin, Justin
Publisher: name: Utah State University
Year: 2007

description: Under normative conditions the mountain pine beetle (Dendroctonus ponderosae Hopkins) has played a regulating role in healthy lodgepole pine (Pinus contorta) forests. However, recently eruptive outbreaks that result from large pine beetle populations have destroyed vast tracts of valuable forest. The outbreaks in North America have received a great deal of attention from both the timber industry and government agencies as well as biologists and ecologists.
In this dissertation we develop a landscape-scaled integrodifference equation model describing the mountain pine beetle and its effect on a lodgepole pine forest. The model is built upon a stage-structured model of a healthy lodgepole pine forest with the addition of beetle pressure in the form of an infected tree class. These infected trees are produced by successful beetle attack, modelled by response functions. Different response functions reflect different probabilities for various densities. This feature of the model allows us to test hypotheses regarding density-dependent beetle attacks.
To capture the spatial aspect of beetle dispersal from infected trees we employ dispersal kernels. These provide a probabilistic model for finding given beetle densities at some distance from infected trees. Just as varied response functions model different attack dynamics, the choice of kernel can model different dispersal behavior. The modular nature of the Red Top Model yields multiple model candidates. These models allow discrimination between broad possibilities at the land scape scale: whether or not beetles are subject to a threshold effect at the lands cape scale and whether or not host selection is random or directed. We fit the model using estimating functions to two distinct types of data: aerial damage survey data and remote sensing imagery. Having constructed multiple models, we introduce a novel model selection methodology for spatial models based on facial recognition technology.
Because the regions and years of aerial damage survey and remote sensing data in the Sawtooth National Recreation Area overlap, we can compare the results from data sets to address the question of whether remote sensing data actually provides insight to the system that coarser scale but less expensive and more readily available aerial damage survey data does not.
Wigner's Theorem and geometry of extreme positive maps
Creators: name: Grabowski, Janusz
name: Kus, Marek
name: Marmo, Giuseppe
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 52A20, 81Q70

description: We consider transformation maps on the space of states which are symmetries in the sense of Wigner. Due to the convex nature of the space of states, the set of these maps has a convex structure. We investigate the possibility of a complete characterization of extreme maps of this convex body, to be able to contribute to the classification of positive maps. Our study provides a variant of Wigner's theorem originally proved for ray transformations in Hilbert spaces.
description: 26 pages, 6 figures
Datasets, Checkpoints, and Code for "Self-Driving Telescopes: Autonomous Scheduling of Astronomical Observation Campaigns with Offline Reinforcement Learning"
Creators: name: Anonymous
Publisher: name: Zenodo
Year: 2023

description: Go to https://zenodo.org/doi/10.5281/zenodo.8388482 for the updated version!!

This anonymous repository contains a zip file for the datasets, checkpoints, and code related to the "Self-Driving Telescopes: Autonomous Scheduling of Astronomical Observation Campaigns with Offline Reinforcement Learning" submission.

Each zip folder will further contain a README file and related metadata.
Contributo della modellistica idrologica all'analisi di suscettività alle frane superficiali in argilla
Creators: name: Leoni, Eros <1971>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: GEO/05 Geologia applicata

description: L'Appenino Emiliano è tra le zone più franose al mondo; i fenomeni
che la interessano sono abbastanza lenti e quindi mai catastrofici, ma,
vista la loro diffusione, molto dannosi per le infrastrutture.
La ricerca della pericolosità associata alle frane si distingue in previsione spaziale e previsione temporale; la prima, detta anche suscettività,
è il tema del presente lavoro. La suscettività è volta alla realizzazione
di carte di propensione al dissesto, relative e indipendenti dal tempo.
Dall'inizio degli anni '90 sono disponibili in letteratura diversi modelli
per rispondere a questa esigenza, i quali sono generalmente costituiti
da una componente geo-meccanica (di solito il modello del Pendio Infinito) e una idrologica. Il presente lavoro si concentra su quest'ultima
che, nei diversi modelli, presenta la maggiore varietà, e cerca di capire
quale sia il contributo che questa componente può dare all'analisi di
suscettività in un'area argillosa.
Per valutare questo contributo, sono stati applicati ad un'area di
studio rappresentativa, diversi modelli fisicamente basati noti in letteratura o creati appositamente. Le informazioni dinamiche dei modelli
transitori sono state integrate nel tempo secondo diversi metodi che
tengono conto della permanenza delle condizioni critiche nel versante.
I risultati dell'analisi suggeriscono che, nell'area di studio, e presumibilmente nelle aree a prevalenza argillosa in genere, per la determinazione della suscettività alle frane, il contributo di un modello
fisicamente basato, completo di componente geo-meccanica e componente idrologica accoppiate, è assolutamente trascurabile rispetto ad
un semplice modello geo-meccanico basato sulla sola pendenza come
quello del Pendio Infinito.
Le indicazioni provenienti da un modello completo possono essere ridondanti o addirittura fuorvianti se questo non è adatto alle
caratteristiche dell'area in studio e ben calibrato.
Large Deviations of the Free-Energy in Diluted Mean-Field Spin-Glass
Creators: name: Parisi, Giorgio
name: Rizzo, Tommaso
Publisher: name: arXiv
Year: 2009
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Sample-to-sample free energy fluctuations in spin-glasses display a markedly different behaviour in finite-dimensional and fully-connected models, namely Gaussian vs. non-Gaussian. Spin-glass models defined on various types of random graphs are in an intermediate situation between these two classes of models and we investigate whether the nature of their free-energy fluctuations is Gaussian or not. It has been argued that Gaussian behaviour is present whenever the interactions are locally non-homogeneous, i.e. in most cases with the notable exception of models with fixed connectivity and random couplings $J_{ij}=\pm \tilde{J}$. We confirm these expectation by means of various analytical results. In particular we unveil the connection between the spatial fluctuations of the populations of populations of fields defined at different sites of the lattice and the Gaussian nature of the free-energy fluctuations. On the contrary on locally homogeneous lattices the populations do not fluctuate over the sites and as a consequence the small-deviations of the free energy are non-Gaussian and scales as in the Sherrington-Kirkpatrick model.
title: The Integration of Reading, Writing, Speaking, and Listening Skills in the Middle School Social Studies Classroom
Creators: name: Evans, Marianne Bristow
Publisher: name: Utah State University
Year: 2018

description: The purpose of this feasibility study is to provide evidence of how integrating reading, writing, speaking, and listening skills into eighth-grade social studies instruction facilitates student understanding of content material and ability to write about social studies content. In thiswithin-subjects paired-samples research study, 197 eighth-grade participants received instruction in a social studies content area and in argumentative writing. Data from a criterion-referenced social studies pre and posttest and data from pre and post instruction writing samples were analyzed to evaluate the influence of the integration of literacy tasks in middle school social studies classrooms oncontent area knowledge acquisition and argumentative writing quality. Analysis of the Criterion Referenced Test (CRT) data usingregression analysis showed that there was a statistically significant increase in the students’ performance on the CRT after the students engaged in literacy tasks emphasizing reading, writing, speaking, and listening during the social studies instruction. Analysis of the writing rubric scores using Cohen’s d showed statistically significant differences exist between the students pre and post essay scores. These results suggest that having students engage in reading, writing, speaking, and listening tasks and in explicit writing instruction and production during a social studies unit facilitates their content knowledge acquisition, improves the overall quality of students’ argumentative writing, and more specifically, improves the organization and development of that writing. It is recommended that further research be conducted to determine the best way to group students for collaboration when incorporating reading, writing, speaking, and listening tasks within content area instruction.
Absorptive part of meson--baryon scattering amplitude and baryon polarization in chiral perturbation theory
Creators: name: Bouzas, Antonio O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the spin asymmetry and polarization of the final-state baryon in its rest frame in two-body meson--baryon low-energy scattering with unpolarized initial state, to lowest non-trivial order in BChPT. The required absorptive amplitudes are obtained analytically at one-loop level. We discuss the polarization results numerically for several meson--baryon processes. Even at low energies above threshold, where BChPT can reasonably be expected to be applicable, sizable values of polarization are found for some processes.
TRANSFORMING SMILES: A CASE SERIES ON THE IMPLEMENTATION OF DIGITAL SMILE DESIGN
Creators: name: Rohan Pramod Bhave
name: Ajay Vyankatesh Sabane
name: Bhagyashree Gurunath Kalsekar
name: Mehul A. Shah
Publisher: name: Zenodo
Year: 2024
Subjects: Traditional Analogue Methods, Advanced Digital Techniques, Orthodontic Therapy, Tooth Discoloration.

description: Abstract

Smile designing has recently evolved significantly, shifting from traditional analogue methods to advanced digital techniques. In the past, practitioners would hand-draw on printed photos to demonstrate potential outcomes to patients. Although effective at the time, this approach lacked precision and flexibility. This case report series presents two instances of smile rehabilitation in patients with severe fluorosis, tooth discoloration, and shape alteration following orthodontic therapy. A fully digital approach was employed, utilizing two different scanners and software for smile design.
Datasets, Checkpoints, and Code for "Self-Driving Telescopes: Autonomous Scheduling of Astronomical Observation Campaigns with Offline Reinforcement Learning"
Creators: name: Anonymous
Publisher: name: Zenodo
Year: 2023

description: This anonymous repository contains a zip file for the datasets, checkpoints, and code related to the "Self-Driving Telescopes: Autonomous Scheduling of Astronomical Observation Campaigns with Offline Reinforcement Learning" submission. Each zip folder will further contain a README file and related metadata.
title: Evaluación mediante ecografía Doppler de las complicaciones del trasplante renal.
Creators: name: Garcia Barquin, Paula
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Transplantation
subject: Ultrasound-Spectral Doppler
subject: Ultrasound-Colour Doppler
subject: Teleradiology
subject: Kidney
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El objetivo de esta presentación electrónica es hacer una revisión de las principales complicaciones en pacientes trasplantados renales mediante ecografía simple y ecografía doppler...
Local Turbulence Simulations for the Multiphase ISM
Creators: name: Kissmann, R.
name: Kleimann, J.
name: Fichtner, H.
name: Grauer, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper we show results of numerical simulations for the turbulence in the interstellar medium. These results were obtained using a Riemann solver-free numerical scheme for high-Mach number hyperbolic equations. Here we especially concentrate on the physical properties of the ISM. That is, we do not present turbulence simulations trimmed to be applicable to the interstellar medium. The simulations are rather based on physical estimates for the relevant parameters of the interstellar gas. Applying our code to simulate the turbulent plasma motion within a typical interstellar molecular cloud, we investigate the influence of different equations of state (isothermal and adiabatic) on the statistical properties of the resulting turbulent structures. We find slightly different density power spectra and dispersion maps, while both cases yield qualitatively similar dissipative structures, and exhibit a departure from the classical Kolmogorov case towards a scaling described by the She-Leveque model. Solving the full energy equation with realistic heating/cooling terms appropriate for the diffuse interstellar gas, we are able to reproduce a realistic two-phase distribution of cold and warm plasma. When extracting maps of polarised intensity from our simulation data, we find encouraging similarity to actual observations. Finally, we compare the actual magnetic field strength of our simulations to its value inferred from the rotation measure. We find these to be systematically different by a factor of about 1.5, thus highlighting the often underestimated influence of varying line-of-sight particle densities on the magnetic field strength derived from observed rotation measures.
The Second Earth Trojan 2020 XL$_{5}$
Creators: name: Hui, Man-To
name: Wiegert, Paul A.
name: Tholen, David J.
name: Föhring, Dora
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Earth Trojans are co-orbitals librating around the Lagrange points $L_4$ or $L_5$ of the Sun-Earth system. Although many numerical studies suggest that they can maintain their dynamical status and be stable on timescales up to a few tens of thousands of years or even longer, they remain an elusive population. Thus far only one transient member (2010 TK$_7$) has been discovered serendipitously. Here, we present a dynamical study of asteroid 2020 XL$_5$. With our meticulous followup astrometric observations of the object, we confirmed that it is a new Earth Trojan. However, its eccentric orbit brings it close encounters with Venus on a frequent basis. Based on our N-body integration, we found that the asteroid was captured into the current Earth Trojan status in the 15th century, and then it has a likelihood of 99.5% to leave the $L_4$ region within the next $\sim$10 kyr. Therefore, it is most likely that 2020 XL$_5$ is dynamically unstable over this timescale.
description: Accepted to ApJL; 5 figures, 3 tables
EFFICIENCY AND PRODUCTIVITY ANALYSIS OF FISH FARMING ENTERPRISES IN INDONESIA USING DATA ENVELOPMENT ANALYSIS (DEA)
Creators: name: Budiyanto
Publisher: name: Zenodo
Year: 2024

description: Abstract

This research aims to analyze the efficiency and productivity of aquaculture businesses in Indonesia using the Data Envelopment Analysis (DEA) method. DEA is a non-parametric method used to measure the relative efficiency of decision making units (DMUs) based on available input and output. This study uses secondary data obtained from various official sources, including fisheries statistics and annual reports from aquaculture business units in various provinces in Indonesia. This analysis involves two main stages: first, measuring the technical efficiency, scale efficiency and allocative efficiency of the aquaculture business units; second, identify the factors that influence the level of efficiency. The research results show that there are significant variations in the level of efficiency among aquaculture business units. Some business units operate at optimal efficiency levels, while others demonstrate substandard performance. Factors that contribute to efficiency include the use of technology, operational management, quality of human resources, and access to markets and capital. Business units that use modern technology and have good operational management tend to show higher efficiency. In addition, this research found that the scale of operations also influences efficiency, with larger business units tending to be more efficient than smaller business units. This research provides important insights for stakeholders in the aquaculture industry in Indonesia, including policy makers, managers and entrepreneurs, to improve the efficiency and productivity of their businesses. Practical recommendations are suggested to improve operational efficiency through improving technology, training human resources, and strengthening access to markets and capital. The results of this research can also be used as a basis for further research regarding strategies for increasing efficiency and productivity in the aquaculture sector.
CIFRA National Survey: Uruguay Late December 1997
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Vacation last summer; vacation plans this summer; independence between national and district governments; likability of politicians and presidential candidates; economic situation of the country; problems surrounding drug trafficking; steps government should take to solve drug problem; economic situation of your family; improvement in country's development; approval of ANCAP, a state-owned oil and alcohol company; experience with fortune tellers; plans for attending festivals and ceremonies; race of ministers in cabinet; political spectrum position; religious views; past voting history; future voting tendencies. National Agency for Research and Innovation (ANII) Collection.
title: Assessment of Microchimerism Following Somatic Cell Nuclear Transfer and Natural Pregnancies in Goats (Capra aegagrus hircus)
Creators: name: Gash, Kirsten Karen
Publisher: name: Utah State University
Year: 2018

description: Somatic cell nuclear transfer (SCNT) is a powerful tool for production of transgenic animals for various biomedical and agricultural applications. For instance, our group is using SCNT to produce transgenic goats to study the role of cardiac fibrosis in initiation and progression of atrial fibrillation. There is a possibility of cell transfer from a transgenic fetus to its non-transgenic surrogate mother, known as fetal microchimerism; from a transgenic mother to non-transgenic fetus, maternal microchimerism and from a transgenic twin to non-transgenic twin in utero. Initially, we have assessed the presence of fetal microchimerism in tissue samples from non-transgenic surrogates that delivered transgenic SCNT generated offspring. Then, the SCNT derived transgenic goats were naturally bred and non-transgenic offspring were used for the assessment of maternal microchimerism. Additionally, fetal-fetal microchimerism was evaluated using the tissue samples from non-transgenic twins of transgenic offspring. We investigated DNA from kidney, liver, lung, lymph node and spleen for the presence of neomycin resistant gene (Neo), which all transgenic SCNT generated females and their transgenic offspring tested positive for. We found no detectable maternal or fetal-fetal microchimerism, but fetal microchimerism was detected in lymph node of one of the surrogate dams that carried a SCNT pregnancy. The results of the study have direct implications on the use and disposal of non-transgenic surrogates and non-transgenic offspring.
title: Análisis de costes de la punción pulmonar guiada por TC en comparación con la biopsia-resección de lesión pulmonar quirúrgica.
Creators: name: Ubeda Morant, Nuria
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Puncture
subject: Comparative studies
subject: Cost-effectiveness
subject: CT
subject: Percutaneous
subject: Fluoroscopy
subject: Thorax
subject: Interventional non-vascular
subject: Management

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Analizar los costes debidos a la punción pulmonar guiada por TC comparada con la biopsia-resección de lesiónpulmonar...
Meson Resonances at large Nc: Complex Poles vs Breit-Wigner Masses
Creators: name: Nieves, J.
name: Arriola, E. Ruiz
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The rigorous quantum mechanical definition of a resonance requires determining the pole position in the second Riemann sheet of the analytically continued partial wave scattering amplitude in the complex Mandelstam s-variable plane. For meson resonances we investigate the alternative Breit-Wigner (BW) definition within the large Nc expansion. By assuming that the pole position is ${\cal O} (N_C^{0})$ and exploiting unitarity, we show that the BW determination of the resonance mass differs from the pole position by ${\cal O} (N_C^{-2})$ terms, which can be extracted from pi-pi scattering data. For the case of the f0(600) pole, the BW scalar mass is predicted to occur at about 700 MeV while the true value is located at about 800 MeV.
description: 7 pages. No figures. (elsevier preprint)
title: Integrated Management of Billbugs (Coleoptera: Dryophthoridae) in Intermountain West Turfgrass
Creators: name: Dupuy, Madeleine M.
Publisher: name: Utah State University
Year: 2018

description: Billbugs are a serious pest of turfgrass in the Intermountain West. Billbug larvae severely discolor and eventually kill turfgrass by feeding in stems, on roots, and on crowns of the plant. Billbugs are typically managed with preventive, calendar-based applications of insecticides. Most of our knowledge on the biology and management of billbugs comes from research in the eastern U.S, and little is known about billbug biology and best management practices in the Intermountain West. First, I examined the seasonal activity of billbug life stages in Intermountain West turfgrass and developed a predictive degree-day model to better time management strategies against billbugs. I found that compared to the eastern U.S., a regional model that starts earlier (January 13) and has a cooler insect development threshold (3oC) was adequately robust to predict billbugs in Utah and Idaho. Next, I used the Utah-Idaho degree-day model to determine whether preventive and curative timings for billbug management developed in the eastern U.S. were effective in the Intermountain West. Testing four insecticides with the Utah-Idaho model and with eastern U.S. management timings I found that there was support to consider adoption of these same recommendations in Utah and Idaho, particularly for current preventive insecticides such as neonicotinoids and anthranilic diamides. Finally, considering that turf insecticides can negatively impact predatory insects, thought to viisuppress turf pests, I assessed the predatory arthropod community in Intermountain West turf and their impacts on billbugs. I found that the predatory arthropod community consisted primarily of ground beetles and spiders, representing 60% and 28% of all predators, respectively. I found that predators contributed the most by consuming billbug eggs and by changing the behavior of billbug adults with an observed reduction in mating activity. My research not only lays the ground work for development of effective, sustainable integrated management of billbugs in Intermountain West turfgrass, including conservation biocontrol,but also illustrates the necessity of regional predictive models, monitoring, and appropriate timing of management for successful turf pest suppression.