cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Tumores Mesenquimales de la Mama
Creators: name: Pascagaza Acero, Alejandro
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Breast
subject: Mammography
subject: Ultrasound
subject: Biopsy
subject: Neoplasia
subject: Pathology

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Conocer la clasificación actual de la OMS de los tumores mamarios. Entender el origen histológico de los tumores mesenquimales de la mama. Diferenciar los tumores mesenquimales de los demás tipos histológicos. Conocer el aspecto radiológico de...
Deployment of Aerial Robots after a major fire of an industrial hall with hazardous substances, a report
Creators: name: Surmann, Hartmut
name: Slomma, Dominik
name: Grobelny, Stefan
name: Grafe, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This technical report is about the mission and the experience gained during the reconnaissance of an industrial hall with hazardous substances after a major fire in Berlin. During this operation, only UAVs and cameras were used to obtain information about the site and the building. First, a geo-referenced 3D model of the building was created in order to plan the entry into the hall. Subsequently, the UAVs were used to fly in the heavily damaged interior and take pictures from inside of the hall. A 360° camera mounted under the UAV was used to collect images of the surrounding area especially from sections that were difficult to fly into. Since the collected data set contained similar images as well as blurred images, it was cleaned from non-optimal images using visual SLAM, bundle adjustment and blur detection so that a 3D model and overviews could be calculated. It was shown that the emergency services were not able to extract the necessary information from the 3D model. Therefore, an interactive panorama viewer with links to other 360° images was implemented where the links to the other images depends on the semi dense point cloud and located camera positions of the visual SLAM algorithm so that the emergency forces could view the surroundings.
description: 8 pages, 14 figures, conference
title: The Cult of Socrates: The Philosopher and His Companions in Satie's Socrate
Creators: name: Moreno, Andrea Decker
Publisher: name: Utah State University
Year: 2013

description: Satie's Socrate is an enigma in the musical world, a piece that defies traditional forms and styles. Satie chose for his subject one of the most revered characters of history, the philosopher Socrates. Instead of evaluating his philosophy and ideas, Satie created a portrait of Socrates from the most intimate moments Socrates spent with his followers in Plato's dialogues.
title: Análisis de la eficacia diagnóstica de las pruebas de imagen en la Apendicitis Aguda.
Creators: name: Agirre Aranburu, Francisco Javier
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Abdomen
subject: Ultrasound
subject: CT
subject: Acute

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Estudio retrospectivo de las apendicectomías realizadas en nuestro hospital a pacientes adultos,
comparando los resultados obtenidos entre los casos en los que se les realizó pruebas de imagen previas a la cirugía y aquellos que fueron...
title: Utilidad del contraste ecográfico en el primer control post-transplante
Creators: name: Horneros Torres, Judit
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Abdomen
subject: Kidney
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Embolism / Thrombosis
subject: Ischaemia / Infarction
subject: Transplantation

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Identificar las principales complicaciones agudas-subagudas post-trasplante renal. Mostrar los diferentes patrones de captación de las complicaciones,
mediante el uso de contraste ecográfico. Conocer las ventajas del contraste ecográfico respecto...
Mathematical framework for breathing chimera states
Creators: name: Omel'chenko, Oleh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: 34C15, 35B36, 35B60, 35B35

description: About two decades ago it was discovered that systems of nonlocally coupled oscillators can exhibit unusual symmetry-breaking patterns composed of coherent and incoherent regions. Since then such patterns, called chimera states, have been the subject of intensive study but mostly in the stationary case when the coarse-grained system dynamics remains unchanged over time. Nonstationary coherence-incoherence patterns, in particular periodically breathing chimera states, were also reported, however not investigated systematically because of their complexity. In this paper we suggest a semi-analytic solution to the above problem providing a mathematical framework for the analysis of breathing chimera states in a ring of nonlocally coupled phase oscillators. Our approach relies on the consideration of an integro-differential equation describing the long-term coarse-grained dynamics of the oscillator system. For this equation we specify a class of solutions relevant to breathing chimera states. We derive a self-consistency equation for these solutions and carry out their stability analysis. We show that our approach correctly predicts macroscopic features of breathing chimera states. Moreover, we point out its potential application to other models which can be studied using the Ott-Antonsen reduction technique.
title: Pinza aorto mesentérica, dos patologías en una.
Creators: name: Quintana de la Cruz, Rosa
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: CT-High Resolution
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Realizar una revisión de dos entidades que están producidas por un mismo fenómeno de pinzamiento aorto-mesentérico,
el Síndrome de Wilkie (SW) y el Síndrome de cascanueces (SC). Fig....
title: Papel de la Resonancia Magnética convencional en el diagnóstico de la enfermedad de Parkinson y de los diferentes tipos de Parkinsonismo.
Creators: name: Zalazar, Laura Romina
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: MR
subject: Diagnostic procedure

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisión de la imagen radiológica con Resonancia Magnética de la Enfermedad de Parkinson y los diferentes tipos de...
title: El pericardio. De la radiografía de tórax a la resonancia cardíaca.
Creators: name: Hernández Sánchez, Lucía
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: CT
subject: MR
subject: Conventional radiography
subject: Thorax
subject: Cardiac
subject: Anatomy

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
- Describir la anatomía del pericardio y sus funciones . - Describir las patologías más importantes y frecuentes y los signos radiológicos de éstas en radiografía,
TC y RM. - Exponer las actuales indicaciones de la imagen en la patología del...
title: Organizational Change: Models for Successfully Implementing Change
Creators: name: Calder, Ashley May
Publisher: name: Utah State University
Year: 2013

description: Does it matter what change model is used to make a change in an organization? If so, why? Are certain models more effective than others based on the kind of change that is made (i.e. technology-based verses people-based)? What overlaps exist between these models? What is the strongest point of each model? What is the weakest point? Are any of the change models currently used in companies? This article defines three change models: ADIKAR, Lewin's Change Model and John Kotter's Eight Steps for Leading Organizational Change. Using 16 personal interviews with individuals from large and small companies, I will explain why it may matter what change model is used, depending on the situation and level of former organizational change experience. Some of the individuals I interviewed are aware of a specific change model but do not use it in their company. I will begin by explaining each change model individually. will compare the models to see what similarities and differences can be found. Then I will explain why the change model used in an organization, whether by an individual or by all of management, may be based more on preference than on superiority.
title: Spock, Euler, and Madison: Graph Theory in the Classroom
Creators: name: Buhler, Michael
Publisher: name: Utah State University
Year: 2013

description: This work is an attempt to accomplish two main objectives. First is to encourage secondary students to engage in the kinds of mathematical reasoning skills that will be necessary to them when they move to college math classes. My experience in college, along with that of many others is that "school math," with its obsession with calculations and memorization, is dreadfully insufficient in preparing students for the proof and reasoning-based classes they will face in high school. This is an attempt to integrate some of those reasoning skills into high school courses using graph theory as a vehicle.
The second objective is to give more students greater access to this kind of mathematical thinking. This is accomplished by using several alternative teaching methods and strategies that are designed to engage students in learning as well as providing enough variety to the students that they are able to remain interested in the mathematics they are doing. Graph theory is an excellent vehicle with which to do this principally because it is hardly used in schools today. The thought of being able to do math that none of their colleagues has done before is motivating to students. Furthermore it is empowering to those students who are traditionally portrayed as being "unable to do math." Putting these students on the cutting edge should have the result of giving these students a second chance to fall in love, or at least fall out of hate, with mathematics and have a higher chance of success in school and college. This same strategy will also have the same result of boosting the skills and performance of those students who are considered to be excellent students, further preparing them in new ways for their college courses.
In the end, it is my goal not only to show how graph theory can help teachers help their student succeed, but also to show them that teaching in this way is simple and something teachers can do without taking up too much of their precious time and patience. I believe that teachers will find that these resources will be valuable in boosting academic performance for more students and better preparing them for college.
Current driven kink instabilities in relativistic jets: dissipation properties
Creators: name: Bodo, G.
name: Mamatsashvili, G.
name: Rossi, P.
name: Mignone, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the evolution of current driven kink instabilities of a highly magnetized relativistic plasma column, focusing in particular on its dissipation properties. The instability evolution leads to the formation of thin current sheets where the magnetic energy is dissipated. We find that the total amount of dissipated magnetic energy is independent of the dissipation properties. Dissipation occurs in two stages: a peak when the instability saturates, which is characterized by the formation of a helicoidal current sheet at the boundary of the deformed plasma column, followed by a weaker almost flat phase, in which turbulence develops. The detailed properties of these two phases depend on the equilibrium configuration and other parameters, in particular on the steepness of the pitch radial profile, on the presence of an external axial magnetic field and on the amount of magnetization. These results are relevant for high energy astrophysical sources, since current sheets can be the sites of magnetic reconnection where particles can be accelerated to relativistic energies and give rise to the observed radiation.
description: 16 pages, 22 figures, MNRAS accepted
Additional file 8 of The origins and genomic diversity of American Civil War Era smallpox vaccine strains
Creators: name: Duggan, Ana T.
name: Klunk, Jennifer
name: Porter, Ashleigh F.
name: Dhody, Anna N.
name: Hicks, Robert
name: Smith, Geoffrey L.
name: Humphreys, Margaret
name: McCollum, Andrea M.
name: Davidson, Whitni B.
name: Wilkins, Kimberly
name: Li, Yu
name: Burke, Amanda
name: Polasky, Hanna
name: Flanders, Lowell
name: Poinar, Debi
name: Raphenya, Amogelang R.
name: Lau, Tammy T. Y.
name: Alcock, Brian
name: McArthur, Andrew G.
name: Golding, G. Brian
name: Holmes, Edward C.
name: Poinar, Hendrik N.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 8: Figure S4. Regression analyses of root-to-tip genetic distance on the ML phylogeny against either year of collection or year of sequencing.
Distance determination to 12 Type II Supernovae using the Expanding Photosphere Method
Creators: name: Jones, Matias I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We used early time photometry and spectroscopy of 12 Type II plateau Supernovae (SNe IIP) to derive their distances using the Expanding Photosphere Method (EPM). We performed this study using two sets of Type II supernovae (SNe II) atmosphere models (E96, D05), three filter subsets (BV, BVI, VI) and two methods for the host galaxy extinctions, which led to 12 Hubble diagrams. Using the VI filter subset and the D05 models we obtained a dispersion in the Hubble diagram of sigma = 0.32 mag and a Hubble constant of H0 = 52.4 +/- 4.3 km s-1 Mpc-1. We also applied the EPM analysis to the well-observed SN IIP SN 1999em. With the VI filter subset and the D05 models we derived a distance of 13.9 +/- 1.4 Mpc, agreement with the Cepheid distance of 11.7 +/- 1.0 Mpc to the SN 1999em host galaxy (NGC 1637).
description: MSc thesis, Universidad de Chile. 96 pages, 31 figures
Shortcutting Fast Failover Routes in the Data Plane
Creators: name: Shukla, Apoorv
name: Foerster, Klaus-Tycho
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In networks, availability is of paramount importance. As link failures are disruptive, modern networks in turn provide Fast ReRoute (FRR) mechanisms to rapidly restore connectivity. However, existing FRR approaches heavily impact performance until the slower convergence protocols kick in. The fast failover routes commonly involve unnecessary loops and detours, disturbing other traffic while causing costly packet loss. In this paper, we make a case for augmenting FRR mechanisms to avoid such inefficiencies. We introduce ShortCut that routes the packets in a loop free fashion, avoiding costly detours and decreasing link load. ShortCut achieves this by leveraging data plane programmability: when a loop is locally observed, it can be removed by short-cutting the respective route parts. As such, ShortCut is topology-independent and agnostic to the type of FRR currently deployed. Our first experimental simulations show that ShortCut can outperform control plane convergence mechanisms; moreover avoiding loops and keeping packet loss minimal opposed to existing FRR mechanisms.
description: To appear at the ACM/IEEE Symposium on Architectures for Networking and Communications Systems 2021 (ANCS'21)
Flux moduli stabilisation, Supergravity algebras and no-go theorems
Creators: name: de Carlos, Beatriz
name: Guarino, Adolfo
name: Moreno, Jesus M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a complete classification of the flux-induced 12d algebras compatible with the set of N=1 type II orientifold models that are T-duality invariant, and allowed by the symmetries of the T^6/(Z_2 x Z_2) isotropic orbifold. The classification is performed in a type IIB frame, where only H_3 and Q fluxes are present. We then study no-go theorems, formulated in a type IIA frame, on the existence of Minkowski/de Sitter (Mkw/dS) vacua. By deriving a dictionary between the sources of potential energy for the three moduli (S, T and U) in types IIA and IIB, we are able to combine algebra results and no-go theorems. The outcome is a systematic procedure for identifying phenomenologically viable models where Mkw/dS vacua may exist. We present a complete table of the allowed algebras and the viability of their resulting scalar potential, and we point at the models which stand any chance of producing a fully stable vacuum.
description: Version published in JHEP
title: Landscape Architecture Foundation Case Study Investigation and the Case of the Streetscape
Creators: name: Blackmore, Pamela
Publisher: name: Utah State University
Year: 2013

description: The demonstration of landscape performance benefits has become increasingly important in landscape architecture practice and in communicating to interdisciplinary audiences. This project introduces four built streetscape projects investigated in the 2012 Landscape Architecture Foundation Case Study Investigation (CSI) program, including a large-scale permeable pavement project in Charles City, Iowa, and American Society of Landscape Architects' award-winning projects in Missouri, California, and Colorado. Following the case studies, several compelling performance benefits of these projects are presented, such as safety and accessibility and water and energy conservation. The paper specifically illustrates the economic benefits and the data source used for performance assessment in two projects. The paper ends with a discussion on the lessons learned in the CSI program.
Canadian trade policy, 1945-1953
Creators: name: Weihs, Frederick H.
Publisher: name: University of British Columbia
Year: 2010

description: In investigating the integration of the Canadian and American economies after World War II, most writers have focused on the influence of the American multinational corporations and on the activities of the American government. Little attention has been paid to the important role of the Canadian government in furthering this process and to the significance of trade and trade policy. This thesis examines the evolution of Canadian trade policy between 1945 and 1953. The main sources for this study are the private papers of government ministers and the files of Canadian government departments. Since there have been no major studies of the development of trade policy in this period, a chronological structure has been employed for the analysis. Post-war Canadian trade policy can be divided into two periods. During the first period, 1945 to 1947, the government attempted to re-establish the pre-war pattern of multilateral trade. The means employed to attain this goal —the introduction of a free market system in international trade—represented a significant departure from traditional Canadian trade policy. The traditional policy is outlined in chapter one, and in chapter two the economic, political, and ideological factors underlying the new policy are examined. However, the foreign exchange crisis of 1947, examined in chapter three, produced a rapid retreat from the policy of multilateralism based on free-market trading. The government, seeking a solid base for Canadian trade to promote economic development, turned to a system of bilateral, regulated trade with the United States. Continental economic integration became a key element of trade policy. The development of this policy and the crucial ties between trade policy and defence are explored in the final chapter.
Simplifying quantum double Hamiltonians using perturbative gadgets
Creators: name: Koenig, Robert
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Perturbative gadgets were originally introduced to generate effective k-local interactions in the low-energy sector of a 2-local Hamiltonian. Extending this idea, we present gadgets which are specifically suited for realizing Hamiltonians exhibiting non-abelian anyonic excitations. At the core of our construction is a perturbative analysis of a widely used hopping-term Hamiltonian. We show that in the low-energy limit, this Hamiltonian can be approximated by a certain ordered product of operators. In particular, this provides a simplified realization of Kitaev's quantum double Hamiltonians.
description: 34 pages, v2: updated to match published version
Correlation dynamics after short-pulse photoassociation
Creators: name: Koch, Christiane P.
name: Kosloff, Ronnie
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Two atoms in an ultracold gas are correlated at short inter-atomic distances due to threshold effects where the potential energy of their interaction dominates the kinetic energy. The correlations manifest themselves in a distinct nodal structure of the density matrix at short inter-atomic distances. Pump-probe spectroscopy has recently been suggested [Phys. Rev. Lett. 103, 260401 (2009)] to probe these pair correlations: A suitably chosen, short photoassociation laser pulse depletes the ground state pair density within the photoassociation window, creating a non-stationary wave packet in the electronic ground state. The dynamics of this non-stationary wave packet is monitored by time-delayed probe and ionization pulses. Here, we discuss how the choice of the pulse parameters affects experimental feasibility of this pump-probe spectroscopy of two-body correlations.
Standing on Shoulders or Feet? An Extended Study on the Usage of the MSR Data Papers
Creators: name: Kotti, Zoe
name: Kravvaritis, Konstantinos
name: Dritsa, Konstantina
name: Spinellis, Diomidis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: The establishment of the Mining Software Repositories (MSR) data showcase conference track has encouraged researchers to provide data sets as a basis for further empirical studies. Objective: Examine the usage of data papers published in the MSR proceedings in terms of use frequency, users, and use purpose. Method: Data track papers were collected from the MSR data showcase track and through the manual inspection of older MSR proceedings. The use of data papers was established through manual citation searching followed by reading the citing studies and dividing them into strong and weak citations. Contrary to weak, strong citations truly use the data set of a data paper. Data papers were then manually clustered based on their content, whereas their strong citations were classified by hand according to the knowledge areas of the Guide to the Software Engineering Body of Knowledge. A survey study on 108 authors and users of data papers provided further insights regarding motivation and effort in data paper production, encouraging and discouraging factors in data set use, and future desired direction regarding data papers. Results: We found that 65% of the data papers have been used in other studies, with a long-tail distribution in the number of strong citations. Weak citations to data papers usually refer to them as an example. MSR data papers are cited in total less than other MSR papers. A considerable number of the strong citations stem from the teams that authored the data papers. Publications providing Version Control System (VCS) primary and derived data are the most frequent data papers and the most often strongly cited ones. Enhanced developer data papers are the least common ones, and the second least frequently strongly cited. Data paper authors tend to gather data in the context of other research. [...]
description: journal article, 35 pages, 7 figures, 6 tables
title: Linfoma cerebral primario en inmunocompetentes.
Creators: name: Soliva Martínez, Daniel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: Oncology
subject: CT
subject: MR
subject: Contrast agent-intravenous
subject: Oedema
subject: Neoplasia
subject: Lymphoma

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El objetivo del trabajo es mostrar mediante casos confirmados,
los hallazgos radiológicos típicos del linfoma cerebral primario (LCP) en...
Test of hadronic interaction models with air shower data
Creators: name: Hoerandel, J. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The description of high-energy hadronic interactions plays an important role in the (astrophysical) interpretation of air shower data. The parameter space important for the development of air showers (energy and kinematical range) extends well beyond todays accelerator capabilities. Therefore, accurate measurements of air showers are used to constrain modern models to describe high-energy hadronic interactions. The results obtained are complementary to information gained at accelerators and add to our understanding of high-energy hadronic interactions.
description: Invited talk at the 13th International Conference on Elastic & Diffractive Scattering, CERN, 2009
A comparison of methods to determine neuronal phase-response curves
Creators: name: Torben-Nielsen, Benjamin
name: Uusisaari, Marylka
name: Stiefel, Klaus M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The phase-response curve (PRC) is an important tool to determine the excitability type of single neurons which reveals consequences for their synchronizing properties. We review five methods to compute the PRC from both model data and experimental data and compare the numerically obtained results from each method. The main difference between the methods lies in the reliability which is influenced by the fluctuations in the spiking data and the number of spikes available for analysis. We discuss the significance of our results and provide guidelines to choose the best method based on the available data.
description: PDFLatex, 16 pages, 7 figures.
title: Divertículo traqueal como causa de disnea en urgencias
Creators: name: Aleman Navarro, Carmen Maria
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Respiratory system
subject: Thorax
subject: Pulmonary vessels
subject: CT-Angiography
subject: Contrast agent-intravenous
subject: Diagnostic procedure
subject: Congenital
subject: Diverticula

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Conocer la existencia del divertículo traqueal y su posible aparición en la patología torácica de urgencias. Identificar los hallazgos radiológicos por TC y poderlo reconocer como causa alternativaal tromboembolismo pulmonar de disnea entre...
Criticality in multicomponent spherical models : results and cautions
Creators: name: Aqua, Jean-Noël
name: Fisher, Michael E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: To enable the study of criticality in multicomponent fluids, the standard spherical model is generalized to describe an $\ns$-species hard core lattice gas. On introducing $\ns$ spherical constraints, the free energy may be expressed generally in terms of an $\ns\times\ns$ matrix describing the species interactions. For binary systems, thermodynamic properties have simple expressions, while all the pair correlation functions are combinations of just two eigenmodes. When only hard-core and short-range overall attractive interactions are present, a choice of variables relates the behavior to that of one-component systems. Criticality occurs on a locus terminating a coexistence surface; however, except at some special points, an unexpected ``demagnetization effect'' suppresses the normal divergence of susceptibilities at criticality and distorts two-phase coexistence. This effect, unphysical for fluids, arises from a general lack of symmetry and from the vectorial and multicomponent character of the spherical model. Its origin can be understood via a mean-field treatment of an XY spin system below criticality.
description: 4 figures
On the Sunyaev-Zel'dovich effect from dark matter annihilation or decay in galaxy clusters
Creators: name: Lavalle, Julien
name: Boehm, Celine
name: Barthes, Julien
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the prospects for detecting the Sunyaev Zel'dovich (SZ) effect induced by dark matter (DM) annihilation or decay. We show that with standard (or even extreme) assumptions for DM properties, the optical depth associated with relativistic electrons injected from DM annihilation or decay is much smaller than that associated with thermal electrons, when averaged over the angular resolution of current and future experiments. For example, we find: $τ_{\rm DM} \sim 10^{-9}-10^{-5}$ (depending on the assumptions) for $\mchi = 1$ GeV and a density profile $ρ\propto r^{-1}$ for a template cluster located at 50 Mpc and observed within an angular resolution of $10"$, compared to $τ_{\rm th}\sim 10^{-3}-10^{-2}$. This, together with a full spectral analysis, enables us to demonstrate that, for a template cluster with generic properties, the SZ effect due to DM annihilation or decay is far below the sensitivity of the Planck satellite. This is at variance with previous claims regarding heavier annihilating DM particles. Should DM be made of lighter particles, the current constraints from 511 keV observations on the annihilation cross section or decay rate still prevent a detectable SZ effect. Finally, we show that spatial diffusion sets a core of a few kpc in the electron distribution, even for very cuspy DM profiles, such that improving the angular resolution of the instrument, e.g. with ALMA, does not necessarily improve the detection potential. We provide useful analytical formulae parameterized in terms of the DM mass, decay rate or annihilation cross section and DM halo features, that allow quick estimates of the SZ effect induced by any given candidate and any DM halo profile.
description: 27 p, 6 figs, additional section on spatial diffusion effects. Accepted for publication in JCAP
Hart Crane’s "Mystical-empirical" poetry and its relation to nineteenth century traditions
Creators: name: Bonham, Ronald Allen
Publisher: name: University of British Columbia
Year: 2010

description: This dissertation defines and analyzes a conflict which is present in all of Crane's poetry. The conflict is based on the opposition between two outlooks which are called mystical and empirical. Because both of these outlooks were central to Crane's vision, their apparent deep opposition troubled him. Crane's personal tensions both in his early private life and in his sensibility are important considerations in understanding this conflict. However, since he tried to discover a balance in life through his poetry, his art rather than his life is the central focus of this study. Crane turned to the literature of three Nineteenth Century traditions—Romanticism, Transcendentalism and American Symbolism—for his solution. In the works of these traditions, he found the same troubled conflict and the search for a solution in a unified statement. Consequently, he examined their art closely and was greatly influenced by it. At times, this influence appears to be an unconscious absorption of principles or techniques; at others, it is expressed in obvious, conscious imitation. Crane's ability or inability to incorporate the work of these earlier traditions is closely related to the success or failure of his own vision. His life-long relationship with these traditions is, therefore, the central energy behind his work. It is this relationship which is the concern of this dissertation. Chapter 1 defines the terms "mystical" and "empirical" as they are applied to Crane's art. It also provides a brief overview of Crane's poetry and letters in order to demonstrate how the tensions represented by the two terms are developed throughout all of his work. Chapters 2 to 5 deal with Crane's relationship to English Romanticism. Crane's earliest work is found to be an imitation of the anti-"empirical" literature of the fin de siecle. His maturer work is then studied in relation to the poetry of the High Romantics—Wordsworth, Coleridge, Shelley, Keats and Blake. The works of these poets are compared to Crane's both through analyses of individual poems and through studies of themes and poetic techniques. Chapters 6 and 7 explore Crane's debt to American Transcendentalism. The "mystical"-directed ideas and works of Emerson and Whitman are explored in relation to Crane's poetry and poetic. Inherent contradictions in the works of the two Transcendentalist figures appear again in Crane's. Chapters 8 to 10 deal with the American Symbolists—Poe, Dickinson and Melville. Crane found that these writers differed from the American Transcendentalists, mainly because of their distrust of a completely optimistic-minded outlook. The relationship of Crane's work to theirs demonstrates his share in this distrust. Chapter 11 is the conclusion. It summarizes Crane's relationship to the three Nineteenth Century traditions, as a difficult and uneven, but courageous, attempt to renew poetic faith in the Twentieth Century.
Searching to Learn with Instructional Scaffolding
Creators: name: Câmara, Arthur
name: Roy, Nirmal
name: Maxwell, David
name: Hauff, Claudia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Search engines are considered the primary tool to assist and empower learners in finding information relevant to their learning goals-be it learning something new, improving their existing skills, or just fulfilling a curiosity. While several approaches for improving search engines for the learning scenario have been proposed, instructional scaffolding has not been studied in the context of search as learning, despite being shown to be effective for improving learning in both digital and traditional learning contexts. When scaffolding is employed, instructors provide learners with support throughout their autonomous learning process. We hypothesize that the usage of scaffolding techniques within a search system can be an effective way to help learners achieve their learning objectives whilst searching. As such, this paper investigates the incorporation of scaffolding into a search system employing three different strategies (as well as a control condition): (I) AQE_{SC}, the automatic expansion of user queries with relevant subtopics; (ii) CURATED_{SC}, the presenting of a manually curated static list of relevant subtopics on the search engine result page; and (iii) FEEDBACK_{SC}, which projects real-time feedback about a user's exploration of the topic space on top of the CURATED_{SC} visualization. To investigate the effectiveness of these approaches with respect to human learning, we conduct a user study (N=126) where participants were tasked with searching and learning about topics such as `genetically modified organisms'. We find that (I) the introduction of the proposed scaffolding methods does not significantly improve learning gains. However, (ii) it does significantly impact search behavior. Furthermore, (iii) immediate feedback of the participants' learning leads to undesirable user behavior, with participants focusing on the feedback gauges instead of learning.
description: Published At CHIIR 2021, won the best student paper
title: Ptosis Vertebral: Diagnostico por imagen.
Creators: name: Cedeño Poveda, Maria Fernanda
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Musculoskeletal spine
subject: Bones
subject: Conventional radiography
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Complications
subject: Image compression
subject: Trauma
subject: Pathology

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Describir la fisiopatología de la Ptosis vertebral. Revisar de forma didáctica el papel de los principales métodos de imagen en el diagnóstico de los pacientes con Ptosis...
title: Integrating Mathematics and Other Content Disciplines in the Elementary Classroom
Creators: name: Billingsley, Jessica
Publisher: name: Utah State University
Year: 2013

description: Curriculum integration is a growing trend in education. Researchers look at integration to alleviate the demand on educator’s time to teach while still meeting all core standards, whether they are state standards such as the Utah Core Standards or other standards such as Common Core State Standards. For my honors project I looked at curriculum integration applied to the elementary classroom setting. Having researched integration examples and best practices I created three lessons that were taught during my student teaching. My lessons met all Common Core State Standards and Utah Core Standards. Through an action research qualitative study I reflected on my experiences with curriculum integration. I answered the following research questions: (1) What does research say about integration in the classroom? (2) Is it effective to integrate two or more subjects? (3) Is it a sensible venture? The lessons were observed and critiqued by a cooperating teacher and evaluation assessment data were collected and analyzed for all students in the classroom. I used a journal to reflect on my practices of integration and my personal experience. Themes from the teaching journal are shared.
Local Interactions of Higher-Spin Potentials That are Gauge Invariant in Linear Approximation
Creators: name: Ruehl, Werner
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study connected Wightman functions of $N$ conserved currents, each of which is formed from a scalar field and has even spin $l_{i}$. The UV divergence of this vertex function is regularized by the analytic continuation in the space dimension $D\longrightarrow D-ε$. We evaluate the residue of $ε^{-1}$ only, which is a local interaction Lagrangian density and gauge invariant in linear
description: Talk given at Group XXVII Yerevan, Armenia, August 13-29, 2008, v.2 published in Yadernaya Fizika 73 (2010) 518-523
title: Smart Carabiner
Creators: name: Manning, Craig
Publisher: name: Utah State University
Year: 2015

description: Users of common climbing safety equipment rarely understand exactly the loads and forces they are exerting on the equipment at a given time. All climbing equipment comes with a certified safety rating for the amount of force, in kilonewtons, that particular piece of equipment can take. Unfortunately, calculating dynamic load strain on-the-fly is nearly impossible. There needs to be a reliable, easy way of knowing exactly what load is being placed on a piece of equipment at any given point of time.
"Money makes the world go around'': Identifying Barriers to Better Privacy in Children's Apps From Developers' Perspectives
Creators: name: Ekambaranathan, Anirudh
name: Zhao, Jun
name: Van Kleek, Max
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The industry for children's apps is thriving at the cost of children's privacy: these apps routinely disclose children's data to multiple data trackers and ad networks. As children spend increasing time online, such exposure accumulates to long-term privacy risks. In this paper, we used a mixed-methods approach to investigate why this is happening and how developers might change their practices. We base our analysis against 5 leading data protection frameworks that set out requirements and recommendations for data collection in children's apps. To understand developers' perspectives and constraints, we conducted 134 surveys and 20 semi-structured interviews with popular Android children's app developers. Our analysis revealed that developers largely respect children's best interests; however, they have to make compromises due to limited monetisation options, perceived harmlessness of certain third-party libraries, and lack of availability of design guidelines. We identified concrete approaches and directions for future research to help overcome these barriers.
description: 15 pages, 4 tables, Proceedings of the 2021 ACM Conference on Human Factors in Computing Systems
Rapidly Rotating Fermions in an Anisotropic Trap
Creators: name: Ghazanfari, N.
name: Oktel, M. O.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a cold gas of non-interacting fermions in a two dimensional harmonic trap with two different trapping frequencies $ω_x \leq ω_y$, and discuss the effect of rotation on the density profile. Depending on the rotation frequency $Ω$ and the trap anisotropy $ω_y/ω_x$, the density profile assumes two qualitatively different shapes. For small anisotropy ($ω_y/ω_x \ll \sqrt{1+4 Ω^2/ω_x^2}$), the density consists of elliptical plateaus of constant density, corresponding to Landau levels and is well described by a two dimensional local density approximation. For large anisotropy ($ω_y/ω_x \gg \sqrt{1+4 Ω^2/ω_x^2}$), the density profile is Gaussian in the strong confining direction and semicircular with prominent Friedel oscillations in the weak direction. In this regime, a one dimensional local density approximation is well suited to describe the system. The crossover between the two regimes is smooth where the step structure between the Landau level edges turn into Friedel oscillations. Increasing the temperature causes the step structure or the Friedel oscillations to wash out leaving a Boltzmann gas density profile.
description: 14 pages, 7 figures
Expanding perfect fluid generalizations of the C-metric
Creators: name: Wylleman, Lode
name: Beke, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We reexamine Petrov type D gravitational fields generated by a perfect fluid with spatially homogeneous energy density and in which the flow lines form a timelike non-shearing and non-rotating congruence. It is shown that the anisotropic such spacetimes, which comprise the vacuum C-metric as a limit case, can have \emph{non-zero} expansion, contrary to the conclusion in the original investigation by Barnes (Gen. Rel. Grav. 4, 105 (1973)). This class consists of cosmological models with generically one and at most two Killing vectors. We construct their line element and discuss some important properties. The methods used in this investigation incite to deduce testable criteria regarding shearfree normality and staticity op Petrov type $D$ spacetimes in general, which we add in an appendix.
description: 16 pages, extended and amended version
Inflation with a stringy minimal length, reworked
Creators: name: Palma, Gonzalo A.
name: Patil, Subodh P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we revisit the formulation of scalar field theories on de Sitter backgrounds subject to the generalized uncertainty principle (GUP). The GUP arises in several contexts in string theory, but is most readily thought of as resulting from using strings as effective probes of geometry, which suggests an uncertainty relation incorporating the string scale $l_s$. After reviewing the string theoretic case for the GUP, which implies a minimum length scale $l_s$, we follow in the footsteps of Kempf and concern ourselves with how one might write down field theories which respect the GUP. We uncover a new representation of the GUP, which unlike previous studies, readily permits exact analytical solutions for the mode functions of a scalar field on de Sitter backgrounds. We find that scalar fields cannot be quantized on inflationary backgrounds with a Hubble radius $H^{-1}$ smaller than the string scale, implying a sensibly stringy (as opposed to Planckian) cutoff on the scale of inflation resulting from the GUP. We also compute $(H l_s)^2$ corrections to the two point correlation function analytically and comment on the future prospects of observing such corrections in the fortunate circumstance our universe is described by a very weakly coupled string theory.
description: To appear in JHEP. Sub-section discussing how our approach avoids certain ordering ambiguities added
New Charged Black Holes with Conformal Scalar Hair
Creators: name: Anabalon, Andres
name: Maeda, Hideki
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new class of four-dimensional, hairy, stationary solutions of the Einstein-Maxwell-Lambda system with a conformally coupled scalar field is constructed in this paper. The metric belongs to the Plebanski-Demianski family and hence its static limit has the form of the charged C-metric. It is shown that, in the static case, a new family of hairy black holes arises. They turn out to be cohomogeneity-two, with horizons that are neither Einstein nor homogenous manifolds. The conical singularities in the C-metric can be removed due to the back reaction of the scalar field providing a new kind of regular, radiative spacetime. The scalar field carries a continuous parameter proportional to the usual acceleration present in the C-metric. In the zero-acceleration limit, the static solution reduces to the dyonic Bocharova-Bronnikov-Melnikov-Bekenstein solution or the dyonic extension of the Martinez-Troncoso-Zanelli black holes, depending on the value of the cosmological constant.
description: Published version