cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Roturas meniscales con desplazamiento – lo que hay que saber
Creators: name: Stroe, Alin
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Athletic injuries
subject: MR
subject: Musculoskeletal joint

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Evaluar los hallazgos radiológicos mediante RM de las roturas meniscales con desplazamiento. Mostrar ejemplos ilustrativos con apoyo en esquemas con un enfoque...
title: El gradiente de valores de ADC en el edema peritumoral permite distinguir Glioblastoma de metástasis solitaria.
Creators: name: Leiva Salinas, Carlos
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Outcomes analysis
subject: MR-Diffusion/Perfusion
subject: MR
subject: Neuroradiology brain
subject: Head and neck

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Objetivo (Fig.
1): - Investigar el papel del gradiente de los valores de ADC en el edema peritumotal - desde la lesión captante hasta sustancia blanca aparentemente sana - para distinguir Glioblastoma de metástasis solitaria Hipótesis (Fig.
2): -...
Targeting of multiple myeloma-related angiogenesis by miR-199a-5p mimics: In vitro and in vivo anti-tumor activity
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: miR-199-5p
microRNA
miRNA
multiple myeloma
plasma cell leukemia
microenviroment
hypoxia
angiogenesis

description: Multiple myeloma (MM) cells induce relevant angiogenic effects within the human bone marrow milieu (huBMM) by the aberrant expression of angiogenic factors. Hypoxia triggers angiogenic events within the huBMM and the transcription factor hypoxia-inducible factor-1α (HIF-1α) is over-expressed by MM cells. Since synthetic miR-199a-5p mimics negatively regulates HIF-1α, we here investigated a miRNA-based therapeutic strategy against hypoxic MM cells. We indeed found that enforced expression of miR-199a-5p led to down-modulated expression of HIF-1α as well as of other pro-angiogenic factors such as VEGF-A, IL-8, and FGFb in hypoxic MM cells in vitro. Moreover, miR-199a-5p negatively affected MM cells migration, while it increased the adhesion of MM cells to bone marrow stromal cells (BMSCs) in hypoxic conditions. Furthermore, transfection of MM cells with miR-199a-5p significantly impaired also endothelial cells migration and down-regulated the expression of endothelial adhesion molecules such as VCAM-1 and ICAM-1. Finally, we identified a hypoxia\AKT/miR-199a-5p loop as a potential molecular mechanism responsible of miR-199a-5p down-regulation in hypoxic MM cells. Taken together our results indicate that miR-199a-5p has an important role for the pathogenesis of MM and support the hypothesis that targeting angiogenesis via a miRNA/HIF-1α pathway may represent a novel potential therapeutical approach for this still lethal disease. © 2008-2014 Impact Journals, LLC.
A Search for Analogs of KIC 8462852 (Boyajian's Star): A Second List of Candidates
Creators: name: Schmidt, Edward G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In data from the Kepler mission, the normal F3V star KIC 8462852 (Boyajian's star) was observed to exhibit infrequent dips in brightness that have not been satisfactorily explained. A previous paper reported the first results of a search for other similar stars in a limited region of the sky around the Kepler field. This paper expands on that search to cover the entire sky between declinations of +22 degrees and +68 degrees. Fifteen new candidates with low rates of dipping, referred to as "slow dippers" in Paper I, have been identified. The dippers occupy a limited region of the HR diagram and an apparent clustering in space is found. This latter feature suggests that these stars are attractive targets for SETI searches.
Strategies and tolerances of spin transfer torque switching
Creators: name: Nikonov, Dmitri E.
name: Bourianoff, George I.
name: Rowlands, Graham
name: Krivorotov, Ilya N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Schemes of switching nanomagnetic memories via the effect of spin torque with various polarizations of injected electrons are studied. Simulations based on macrospin and micromagnetic theories are performed and compared. We demonstrate that switching with perpendicularly polarized current by short pulses and free precession requires smaller time and energy than spin torque switching with collinear in plane spin polarization; it is also found to be superior to other kinds of memories. We study the tolerances of switching to the magnitude of current and pulse duration. An increased Gilbert damping is found to improve tolerances of perpendicular switching without increasing the threshold current, unlike in plane switching.
description: 40 pages, 16 figures
New characterization based symmetry tests
Creators: name: Božin, V.
name: Milošević, B.
name: Nikitin, Ya. Yu.
name: Obradović, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62G10, 62G20, 45C05, 47A58

description: Two new symmetry tests, of integral and Kolmogorov type, based on the characterization by squares of linear statistics are proposed. The test statistics are related to the family of degenerate U-statistics. Their asymptotic properties are explored. The maximal eigenvalue, needed for the derivation of their logarithmic tail behavior, was calculated or approximated using techniques from the theory of linear operators and the perturbation theory. The quality of the tests is assessed using the approximate Bahadur efficiency as well as the simulated powers. The tests are shown to be comparable with some recent and classical tests of symmetry.
title: Artropatías de la mano. Diagnóstico diferencial mediante radiología simple.
Creators: name: GARCIA GOMEZ, MARIA SORAYA
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Bones
subject: Musculoskeletal bone
subject: Conventional radiography

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Mostar de forma didáctica y fundamentalmente orientada a residentes los hallazgos radiológicos más característicos de las distintas artropatías haciendo hincapié en aquellos que son claves en el diagnóstico diferencial y a la hora de emitir...
title: Reflexion in Mentoringgesprächen - ein Mythos?
Creators: name: Krieg, Martina
name: Kreis, Annelies
Publisher: name: Publikationsserver der Pädagogischen Hochschule Thurgau
Year: 2014

description: Reflexion gilt als zentrales Element von Mentoringgesprächen. Sie soll zwischen Praxiserfahrungen und bereits vorhandenem Wissen vermitteln und somit Kompetenzerweiterung, persönliche Entwicklung sowie professionelles Handeln unterstützen. Im Beitrag wird ein theoriebasiertes Modell vorgestellt, mit dem Mentoringgespräche analysiert werden können in Bezug auf Reflexionstiefe und die Bedeutung von Fragen für Reflexionsprozesse. 16 mit Video aufgezeichnete Nachbesprechungen von Unterricht zwischen Mentorinnen und Mentoren und Unterrichtspraktikantinnen und ?praktikanten wurden einer pragmalinguistischen Gesprächsanalyse unterzogen. Die Studie entstand im Rahmen einer Interventionsstudie, mit der ein Modell zur Qualifizierung von Mentorinnen und Mentoren mit fachspezifischem Unterrichtscoaching erprobt wurde. Es zeigt sich, dass zumeist auf tiefen Ebenen reflektiert wird, Reflexion auf höheren Ebenen jedoch durch gezielte Fragen und durch eine Weiterbildungsintervention mit Mentorinnen und Mentoren angeregt werden kann.
description: Zeitschrift für Hochschulentwicklung ZFHE: Beiträge zu Studium, Wissenschaft und Beruf, vol. 9, no. 1, p. 103
Nonlinear Waves and Coherent Structures in Quasi-neutral Plasmas Excited by External Electromagnetic Radiation
Creators: name: Tzenov, Stephan I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Starting from the Vlasov-Maxwell equations describing the dynamics of various species in a quasi-neutral plasma, an exact relativistic hydrodynamic closure for a special type of water-bag distributions satisfying the Vlasov equation has been derived. It has been shown that the set of equations for the macroscopic hydrodynamic variables coupled to the wave equations for the self-consistent electromagnetic field is fully equivalent to the Vlasov-Maxwell system. Based on the method of multiple scales, a system comprising a vector nonlinear Schrodinger equation for the transverse envelopes of the self-consistent plasma wakefield, coupled to a scalar nonlinear Schrodinger equation for the electron current velocity envelope, has been derived. Using the method of formal series of Dubois-Violette, a traveling wave solution of the derived set of coupled nonlinear Schrodinger equations in the case of circular wave polarization has been obtained. This solution is represented as a ratio of two formal Volterra series. The terms of these series can be calculated explicitly to every desired order.
description: 10 pages, 3 figures
Additional file 1 of Knowledge, attitude, and practices toward COVID-19 among the international travelers in Thailand
Creators: name: Prapaso, Suttiporn
name: Luvira, Viravarn
name: Lawpoolsri, Saranath
name: Songthap, Archin
name: Piyaphanee, Watcharapong
name: Chancharoenthana, Wiwat
name: Muangnoicharoen, Sant
name: Pitisuttithum, Punnee
name: Chanthavanich, Pornthep
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Site of data collection. A total of 399 international travelers and expatriates were included in the study. One hundred and forty-nine participants (37.3%) were enrolled from the Hospital for Tropical Diseases while 250 participants (62.7%) were enrolled from non-hospital areas. Among participants from outside the hospital, 177/250 participants were enrolled from state quarantine or UN soldier line groups (70.8%), the others (29.2%) were enrolled from expats groups, or Thai Travel Clinic Facebook page.
Systolic inequalities for K3 surfaces via stability conditions
Creators: name: Fan, Yu-Wei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We introduce the notions of categorical systoles and categorical volumes of Bridgeland stability conditions on triangulated categories. We prove that for any projective K3 surface, there exists a constant C depending only on the rank and discriminant of its Picard group, such that $$\mathrm{sys}(σ)^2\leq C\cdot\mathrm{vol}(σ)$$ holds for any stability condition on the derived category of coherent sheaves on the K3 surface. This is an algebro-geometric generalization of a classical systolic inequality on two-tori. We also discuss applications of this inequality in symplectic geometry.
description: 26 pages; sync with the published version
Graphite from the viewpoint of Landau level spectroscopy: An effective graphene bilayer and monolayer
Creators: name: Orlita, M.
name: Faugeras, C.
name: Schneider, J. M.
name: Martinez, G.
name: Maude, D. K.
name: Potemski, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We describe an infrared transmission study of a thin layer of bulk graphite in magnetic fields up to B = 34 T. Two series of absorption lines whose energy scales as sqrtB and B are present in the spectra and identified as contributions of massless holes at the H point and massive electrons in the vicinity of the K point, respectively. We find that the optical response of the K point electrons corresponds, over a wide range of energy and magnetic field, to a graphene bilayer with an effective inter-layer coupling 2γ_1, twice the value for a real graphene bilayer, which reflects the crystal ordering of bulk graphite along the c-axis. The K point electrons thus behave as massive Dirac fermions with a mass enhanced twice in comparison to a true graphene bilayer.
description: 4 pages, 2 figures
Strengthening Theoretical Testing in Criminology Using Agent-based Modeling
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: agent-based models
empirical methods
theory testing

description: © The Author(s) 2014. Objectives: The Journal of Research in Crime and Delinquency (JRCD) has published important contributions to both criminological theory and associated empirical tests. In this article, we consider some of the challenges associated with traditional approaches to social science research, and discuss a complementary approach that is gaining popularity—agent-based computational modeling—that may offer new opportunities to strengthen theories of crime and develop insights into phenomena of interest.Method: Two literature reviews are completed. The aim of the first is to identify those articles published in JRCD that have been the most influential and to classify the theoretical perspectives taken. The second is intended to identify those studies that have used an agent-based model (ABM) to examine criminological theories and to identify which theories have been explored.Results: Ecological theories of crime pattern formation have received the most attention from researchers using ABMs, but many other criminological theories are amenable to testing using such methods.Conclusion: Traditional methods of theory development and testing suffer from a number of potential issues that a more systematic use of ABMs—not without its own issues—may help to overcome. ABMs should become another method in the criminologists toolbox to aid theory testing and falsification.
VLA and NOEMA view of the Bok Globule CB 17: the starless nature of a proposed FHSC candidate
Creators: name: Spear, Stephanie
name: Maureira, María José
name: Arce, Héctor
name: Pineda, Jaime E.
name: Dunham, Michael
name: Caselli, Paola
name: Segura-Cox, Dominique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use 3mm continuum NOEMA and NH$_3$ VLA observations towards the First Hydrostatic Core (FHSC) candidate CB 17 MMS to reveal the dust structure and gas properties down to 600-1,100 au scales and constrain its evolutionary stage. We do not detect any compact source at the previously identified 1.3 mm point source, despite expecting a minimum signal-to-noise of 9. The gas traced by NH$_3$ exhibits subsonic motions, with an average temperature of 10.4 K. A fit of the radial column density profile derived from the ammonia emission finds a flat inner region of radius $\sim$1,800 au and a central density of $\sim$6$\times10^5$ cm$^{-3}$. Virial and density structure analysis reveals the core is marginally bound ($α_{vir}$= 0.73). The region is entirely consistent with a young starless core, hence ruling out CB 17 MMS as a FHSC candidate. Additionally, the core exhibits a velocity gradient aligned with the major axis, showing an arc-like structure in the p-v diagram and an off-center region with high-velocity dispersion caused by two distinct velocity peaks. These features could be due to interaction with the nearby outflow, which appears to deflect due to the dense gas near the NH$_3$ column density peak. We investigate the specific angular momentum profile of the starless core, finding that it aligns closely with previous studies of such radial profiles in Class 0 sources. This similarity to more evolved objects suggests that motions at 1,000 au scales are determined by large-scale dense cloud motions and may be preserved through the early stages of star formation.
title: ¿Y si no es lo que parece...? Síndrome de Morris; diagnóstico incidental en la 3ª edad: hallazgos radiológicos.
Creators: name: Catala Forteza, Jordi
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Genetic defects
subject: Congenital
subject: Diagnostic procedure
subject: Ultrasound
subject: CT
subject: Genital / Reproductive system male
subject: Genital / Reproductive system female
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Comunicar a la comunidad radiológica el hecho de que existe la posibilidad que el radiólogo sea el facultativo que levante la sospecha diagnostica ante un pseudohermafroditismo masculino (Síndrome de Morris),
en pacientes de avanzada edad,
los...
A comparison and criticism of two axiomatic systems for classical thermodynamics
Creators: name: Erickson, Arvon Donald
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is a comparison and criticism of two approaches to classical thermodynamics, that due to P. Rastall in the "Journal of Mathematical Physics", Volume 11, Number 10, October 1970, page 2955, and that due to H.A. Buchdahl and W. Greve in "Zeitschrift für Physik" 168, 1962, page 316 and page 386. Rastall's approach is somewhat more general and appeals because of his generally careful attention to the explicit, orderly statement of the assumptions and rigorous proofs based only on these assumptions. However, his approach is significantly improved by substituting the main assumption of the Buchdahl-Greve paper for two of his assumptions. The Buchdahl-Greve assumption is fundamentally appealing and as well as leading to a more natural proof of a crucial theorem, it also allows a straightforward proof for the continuity of the entropy function, which Rastall assumes ad hoc. The proof given in the Buchdahl-Greve paper for the continuity of the entropy function is shown to be circular but a correct proof based on the Buchdahl-Greve assumption is possible and one is given in an appendix. Suggestions are also made concerning how one might improve this combined Buchdahl-Rastall approach.
Search for the Chiral Magnetic Wave with Anisotropic Flow of Identified Particles at RHIC-STAR
Creators: name: Shou, Qi-Ye
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The chiral magnetic wave (CMW) has been theorized to propagate in the Quark-Gluon Plasma formed in high-energy heavy-ion collisions. It could cause a finite electric quadrupole moment of the collision system, and may be observed as a dependence of elliptic flow, $v_{2}$, on the asymmetry between positively and negatively charged hadrons, $A_{\rm ch}$. However, non-CMW mechanisms, such as local charge conservation (LCC) and hydrodynamics with isospin effect, could also contribute to the experimental observations. Here we present the STAR measurements of elliptic flow $v_{2}$ and triangular flow $v_{3}$ of charged pions, along with $v_{2}$ of charged kaons and protons, as functions of $A_{\rm ch}$ in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV. The slope parameters of $Δv_{2}$($A_{\rm ch}$) and $Δv_{3}$($A_{\rm ch}$) are reported and compared to investigate the LCC background. The similarity between pion and kaon slopes suggests that the hydrodynamics is not the dominant mechanism. The difference between the normalized $Δv_{2}$ and $Δv_{3}$ slopes, together with the small slopes in p+Au and d+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV, suggest that the CMW picture remains a viable interpretation at RHIC.
description: 4 pages, 2 figures. Proceedings of Quark Matter 2018, Venice, Italy
The origin of large peculiar motions of star-forming regions and spiral structures of our Galaxy
Creators: name: Baba, Junichi
name: Asaki, Yoshiharu
name: Makino, Junichiro
name: Miyoshi, Makoto
name: Saitoh, Takayuki R.
name: Wada, Keiichi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent VLBI (Very Long Baseline Interferometer) observations determined the distances and proper motions of star-forming regions in spiral arms directly. They showed that star-forming regions and young stars have large peculiar motions, as large as 30 km/s with complex structures. Such a large peculiar motion is incompatible with the prediction of the standard theory of quasi-stationary spiral arms. We use a high-resolution, self-consistent N-body+hydrodynamical simulation to explore how the spiral arms are formed and maintained, and how star-forming regions move. We found that arms are not quasi-stationary but transient and recurrent, as suggested in alternative theories of spiral structures. Because of this transient nature of the spiral arms, star-forming regions exhibit a trend of large and complex non-circular motions, which is qualitatively consistent with the VLBI observations. Owing to this large non-circular motion, a kinematically estimated gas map of our Galaxy has a large systematic errors of ~2-3 kpc in the distance from the Sun.
description: 11 pages, 11 figures. Accepted to ApJ
SN 2020sck: deflagration in a carbon-oxygen white dwarf
Creators: name: Dutta, Anirban
name: Sahu, D. K.
name: Anupama, G. C.
name: Joharle, Simran
name: Kumar, Brajesh
name: Nayana, A. J.
name: Singh, Avinash
name: Kumar, Harsh
name: Bhalerao, Varun
name: Barway, Sudhansu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present optical UBVRI photometry and low-to-medium resolution spectroscopic observations of type Iax SN 2020sck spanning -5.5 d to +67 d from maximum light in the B-band. From the photometric analysis we find $Δm_{\rm{B}}$(15) = 2.03$\pm$0.05 mag and $M_{\rm{B}}$=-17.81$\pm$0.22 mag. Radiation diffusion model fit to the quasi-bolometric light curve indicates 0.13$\pm$0.02 $M_{\odot}$ of $^{56}$Ni and 0.34 $M_{\rm \odot}$ of ejecta are synthesized in the explosion. Comparing the observed quasi-bolometric light curve with angle-averaged bolometric light curve of three-dimensional pure deflagration explosion of $M_{\rm{ch}}$ carbon-oxygen white dwarf, we find agreement with a model in which 0.16 $M_{\odot}$ of $^{56}$Ni and 0.37 $M_{\odot}$ of ejecta is formed. By comparing the +1.4 day spectrum of SN 2020sck with synthetic spectrum generated using SYN++, we find absorption features due to C II, C III and O I. These are unburned materials in the explosion and indicate a C-O white dwarf. One dimensional radiative transfer modeling of the spectra with TARDIS shows higher density in the ejecta near the photosphere and a steep decrease in the outer layers with an ejecta composition dominated mostly by C, O, Si, Fe, and Ni. The star formation rate of the host galaxy computed from the luminosity of the H$α$ ($λ$6563) line is 0.09 $M_{\odot}$ yr$^{-1}$ indicating a relatively young stellar environment.
description: 28 pages, 17 figures, 11 tables, Accepted for Publication in ApJ
Biodegradazione aerobica cometabolica di cloroformio: studio di fattibilità in reattori a biomassa adesa
Creators: name: Ciavarelli, Roberta <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-IND/25 Impianti chimici

description: Chlorinated Aliphatic Hydrocarbons (CAHs) are widespread wastewater and groundwater contaminants and represent a real danger for human health and environment. This research is related to the biodegradation technologies to treat chlorinated hydrocarbons. In particular the study of this thesis is focused on chloroform cometabolism by a butane-grown aerobic pure culture (Rhodococcus aetherovorans BCP1) in continuous-flow biofilm reactors, which are used for in-situ and on-site treatments. The work was divided in two parts: in the first one an experimental study has been conducted in two packed-bed reactors (PBRs) for a period of 370 days; in the second one a fluid dynamics and kinetic model has been developed in order to simulate the experimental data concerning a previous study made in a 2-m continuous-flow sand-filled reactor. The goals of the first study were to obtain preliminary information on the feasibility of chloroform biodegradation by BCP1 under attached-cell conditions and to evaluate the applicability of the pulsed injection of growth substrate and oxygen to biofilm reactors. The pulsed feeding represents a tool to control the clogging and to ensure a long bioreactive zone. The operational conditions implemented in the PBRs allowed the attainment of a 4-fold increase of the ratio of chloroform degraded to substrate consumed, in comparison with the phase of continuous substrate supply. The second study was aimed at identifying guidelines for optimizing the oxygen/substrate supply schedule, developing a reliable model of chloroform cometabolism in porous media. The tested model led to a suitable interpretation of the experimental data as long as the ratio of CF degraded to butane consumed was ≤ 0.27 mgchloroform /mgbutane. A long-term simulation of the best-performing schedule of pulsed oxygen/substrate supply indicated the attainment of a steady state condition characterized by unsatisfactory bioremediation performances, evidencing the need for a further optimization of the pulsed injection technique.
Systematic evaluation of the population-level effects of alternative treatment strategies on the basic reproduction number
Creators: name: Gromov, Dmitry
name: Bulla, Ingo
name: Romero-Severson, Ethan Obie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: An approach to estimate the influence of the treatment-type controls on the basic reproduction number, R 0 , is proposed and elaborated. The presented approach allows one to estimate the effect of a given treatment strategy or to compare a number of different treatment strategies on the basic reproduction number. All our results are valid for sufficiently small values of the control. However, in many cases it is possible to extend this analysis to larger values of the control as was illustrated by examples.
Global Twist of Sunspot Magnetic Fields Obtained from High Resolution Vector Magnetograms
Creators: name: Tiwari, Sanjiv Kumar
name: Venkatakrishnan, P.
name: Sankarasubramanian, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The presence of fine structures in the sunspot vector magnetic fields has been confirmed from Hinode as well as other earlier observations. We studied 43 sunspots based on the data sets taken from ASP/DLSP, Hinode (SOT/SP) and SVM (USO). In this \emph{Letter}, (i) We introduce the concept of signed shear angle (SSA) for sunspots and establish its importance for non force-free fields. (ii) We find that the sign of global $α$ (force-free parameter) is well correlated with the global SSA and the photospheric chirality of sunspots. (iii) Local $α$ patches of opposite signs are present in the umbra of each sunspot. The amplitude of the spatial variation of local $α$ in the umbra is typically of the order of the global $α$ of the sunspot. (iv) We find that the local $α$ is distributed as alternately positive and negative filaments in the penumbra. The amplitude of azimuthal variation of the local $α$ in the penumbra is approximately an order of magnitude larger than that in the umbra. The contributions of the local positive and negative currents and $α$ in the penumbra cancel each other giving almost no contribution for their global values for whole sunspot. (v) Arc-like structures (partial rings) with a sign opposite to that of the dominant sign of $α$ of the umbral region are seen at the umbral-penumbral boundaries of some sunspots. (vi) Most of the sunspots studied, belong to the minimum epoch of the 23$^{rd}$ solar cycle and do not follow the so-called hemispheric helicity rule.
description: 15 pages, 3 figures, 1 table; Accepted for publication in the ApJ Letters
Graphdiynes interacting with metal surfaces: first-principles electronic and vibrational properties
Creators: name: Achilli, Simona
name: Milani, Alberto
name: Fratesi, Guido
name: Tumino, Francesco
name: Manini, Nicola
name: Onida, Giovanni
name: Casari, Carlo S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphdiynes (GDYs) represent a class of 2D carbon materials based on sp-sp$^2$ hybridization with appealing properties and potential applications. Recent advances have demonstrated the experimental self-assembly of GDYs on metal substrates. Here we focus on $α$- and $β$-GDYs on Au(111) and Pt(111), and investigate how their electronic and vibrational properties are affected by the interaction with a metal substrate. We adopt hydrogenated GDY, previously characterized experimentally, as a benchmark for density functional theory simulations, that we apply to show that Au and Pt substrates impose a different degree of distortion on both $α$- and $β$-GDY. By comparing the adsorbed and the freestanding structures, we evaluate the effect of the surface interaction on the bandstructure and the simulated Raman spectra. Different charge transfers result in different energy shift of the Dirac cone in semi-metallic $α$-GDY and changes from semiconducting to metallic behavior for $β$-GDY. These changes in electronic properties are accompanied by characteristic frequency shifts and modifications of Raman active modes. Our results contribute in the understanding of the metal-interaction effects on GDYs and can open a route to the design of novel 2D materials with tailored properties.
A study of the reaction ²⁸Si (p,γ) ²⁹P
Creators: name: Lim, Sim Too
Publisher: name: University of British Columbia
Year: 2010

description: A study of the reaction ²⁸Si (p,γ) ²⁹P The giant resonance region of ²⁹P has been investigated by means of the reaction ²⁸Si (p,γ) ²⁹P. The yields have been measured for the transitions to the ground and the first five.excited states. A comparison of the (p, γ[sub o]) yield with the ²⁹Si(p,γ)²⁸Al yield show a possible isospin splitting of 2.5 MeV. Angular distributions have been. measured for the transitions to the ground, lst excited and 5th excited states. The angular distributions are interpreted in terms of the dominating dipole transitions with interference from the giant quadrupole resonance. A considerable amount of quadrupole strength is observed in the (p, γ[sub o]) and (p, γ₁) reactions. The strengths of different channels in term of the classical dipole sum are compared with the structure of the low-lying states in ²⁹P. Intermediate structure, of width Γ≈ 200 keV, observed throughout the giant, dipole resonance is compared to available 2p-lh calculations. 29 Higher excited states of ²⁹P, the region below the giant resonance, have also been investigated via the (p, γ[sub o]) reaction. Several narrow resonances with observed widths characterized by the target thickness (≈ 17 keV) are proposed to be T=3/2 states, i.e. analogs of states in ²⁹Al. Possible spin-parity assignments to these states are given. Of particular interest are the resonances, of width -150 keV, observed at E[sub p] = 7.25, 7.45 and 8.80 MeV. Evidence for possible spin- parity assignments to the 7.45 and 8.80 MeV states are given. These states are proposed as possible doorway states, such as 2p-lh states.
New $L^2$-type exponentiality tests
Creators: name: Cuparić, Marija
name: Milošević, Bojana
name: Obradović, Marko
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62G10, 62G20

description: We introduce new consistent and scale-free goodness-of-fit tests for the exponential distribution based on Puri-Rubin characterization. For the construction of test statistics we employ weighted $L^2$ distance between $V$-empirical Laplace transforms of random variables that appear in the characterization. The resulting test statistics are degenerate V-statistics with estimated parameters. We compare our tests, in terms of the Bahadur efficiency, to the likelihood ratio test, as well as some recent characterization based goodness-of-fit tests for the exponential distribution. We also compare the powers of our tests to the powers of some recent and classical exponentiality tests. In both criteria, our tests are shown to be strong and outperform most of their competitors.
Additional file 2 of Knowledge, attitude, and practices toward COVID-19 among the international travelers in Thailand
Creators: name: Prapaso, Suttiporn
name: Luvira, Viravarn
name: Lawpoolsri, Saranath
name: Songthap, Archin
name: Piyaphanee, Watcharapong
name: Chancharoenthana, Wiwat
name: Muangnoicharoen, Sant
name: Pitisuttithum, Punnee
name: Chanthavanich, Pornthep
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Differences in mean knowledge score between demographic groups. Table shows differences in mean knowledge score between demographic groups.
Spatial analysis of factors associated with household subscription to the National Health Insurance Scheme in rural Ghana
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Barekuma Collaborative Community Development Project
Bernoulli model
Ghana
National Health Insurance Scheme
Spatial scan statistic

description: The use of health insurance schemes in financing healthcare delivery and to minimize the poverty gap is gaining considerable recognition among the least developed and resource challenged countries around the world. With the implementation of the socialized health insurance scheme, Ghana has taken the lead in Sub-Saharan Africa and now working out further strategies to gain universal coverage among her citizenry. The primary goal of this study is to explore the spatial relationship between the residential homes and demographic features of the people in the Barekese subdistrict in Ghana on the probability to enroll the entire household unit in the National Health Insurance Scheme (NHIS). Household level data were gathered from 20 communities on the enrollment status into the NHIS alongside demographic and socioeconomic indicators and the spatial location of every household that participated in the study. Kulldorff's purely spatial scan statistic was used to detect geographic clusters of areas with participatory households that have either higher or lower enrollment patterns in the insurance program. Logistic regression models on selected demographic and socioeconomic indicators were built to predict the effect on the odds of enrolling an entire household membership in the NHIS. Three clusters significantly stood out to have either high or low enrollment patterns in the health insurance program taking into accounts the number of households in those sub-zones of the study region. Households in the Cluster 1 insurance group have very high travel expenses compared to their counterparts in the other idenfied clusters. Travel cost and time to the NHIS registration center to enroll in the program were both significant predictors to participation in the program when controlling for cluster effect. Residents in the High socioeconomic group have about 1.66 [95% CI: 1.27-2.17] times the odds to enroll complete households in the insurance program compared to their counterparts in the Low socioeconomic group. The study demonstrated the use of spatial analytical tools to identify clusters of household enrollment pattern in the NHIS among residents in rural Ghana. In the face of limited resources, policy makers can therefore use the findings as guideline to strategically channel interventions to areas of most need. Furthermore, these analyses can be repeated annually to assess progress on improving insurance coverage. © S. Manortey et al., 2014.
Impact of network topology on efficiency of proximity measures for community detection
Creators: name: Aynulin, Rinat
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Many community detection algorithms require the introduction of a measure on the set of nodes. Previously, a lot of efforts have been made to find the top-performing measures. In most cases, experiments were conducted on several datasets or random graphs. However, graphs representing real systems can be completely different in topology: the difference can be in the size of the network, the structure of clusters, the distribution of degrees, the density of edges, and so on. Therefore, it is necessary to explicitly check whether the advantage of one measure over another is preserved for different network topologies. In this paper, we consider the efficiency of several proximity measures for clustering networks with different structures. The results show that the efficiency of measures really depends on the network topology in some cases. However, it is possible to find measures that behave well for most topologies.
A Modern Take on the Bias-Variance Tradeoff in Neural Networks
Creators: name: Neal, Brady
name: Mittal, Sarthak
name: Baratin, Aristide
name: Tantia, Vinayak
name: Scicluna, Matthew
name: Lacoste-Julien, Simon
name: Mitliagkas, Ioannis
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The bias-variance tradeoff tells us that as model complexity increases, bias falls and variances increases, leading to a U-shaped test error curve. However, recent empirical results with over-parameterized neural networks are marked by a striking absence of the classic U-shaped test error curve: test error keeps decreasing in wider networks. This suggests that there might not be a bias-variance tradeoff in neural networks with respect to network width, unlike was originally claimed by, e.g., Geman et al. (1992). Motivated by the shaky evidence used to support this claim in neural networks, we measure bias and variance in the modern setting. We find that both bias and variance can decrease as the number of parameters grows. To better understand this, we introduce a new decomposition of the variance to disentangle the effects of optimization and data sampling. We also provide theoretical analysis in a simplified setting that is consistent with our empirical findings.
Osteogenesi imperfetta e Dentinogenesi imperfetta Tipo I: correlazioni cliniche e istologiche
Creators: name: Amadori, Francesca <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: MED/28 Malattie odontostomatologiche

description: Osteogenesis imperffecta (OI) is a heterogeneous group of heritable connetive tissue diseases, quantity and/or qualitative defect in type 1 collagen syntesis; sometimes and in some types it can be associated to dentinogenesis imperfecta (DI), a hereditary disorder in dentin formation that comprises a group of autosomal dominant genetic conditions characterized by abnormal dentine structure affecting either the primary or both the primary and secondary dentitions. Aim: the aim of this study was to assess the correlation between  OI and DI from both a clinical and histological point of view, clarifying the structural and ultrastructural changes. Eighteen children (&-15 years aged) with diagnosis of OI were examined for dental alterations referable to DI; for each patient, the OI type (I, III, IV) was recorded. Extracted or normally exfolied teeth were subjected to a histological examination.Results: a total of eleven patients had abnormal discolourations referable to DI: five patients were affected by OI type I, three by OI III, and three patients by OI type IV. The discolourations, yellow/brown or oplaescent grey, could not be related to the different types of OI. Histological exam of primary teeth showed severe pathological change in dentin, structured into four diffeent layers. A collagen defect due to odontoblast dysfunction was theorized to be on the base of the histological changes. Conclusions: there is no correlation between the type of OI and the type of discolouration. The underlying dentinal defect seems to be related to an odontoblast dysfunction.
MgO barrier-perpendicular magnetic tunnel junctions with CoFe/Pd multilayers and ferromagnetic insertion layers
Creators: name: Mizunuma, K.
name: Ikeda, S.
name: Park, J. H.
name: Yamamoto, H.
name: Gan, H.
name: Miura, K.
name: Hasegawa, H.
name: Hayakawa, J.
name: Matsukura, F.
name: Ohno, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The authors studied an effect of ferromagnetic (Co20Fe60B20 or Fe) layer insertion on tunnel magnetoresistance (TMR) properties of MgO-barrier magnetic tunnel junctions (MTJs) with CoFe/Pd multilayer electrodes. TMR ratio in MTJs with CoFeB/MgO/Fe stack reached 67% at an-nealing temperature (Ta) of 200 degree C and then decreased rapidly at Ta over 250 degree C. The degradation of the TMR ratio may be related to crystallization of CoFe(B) into fcc(111) or bcc(011) texture result-ing from diffusion of B into Pd layers. MTJs which were in-situ annealed at 350oC just after depo-siting bottom CoFe/Pd multilayer showed TMR ratio of 78% by post annealing at Ta =200 degree C.
description: 12 pages, 4 figures
Reduced reward anticipation in youth at high-risk for unipolar depression: A preliminary study
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Depression
High-risk
Reward function
Positive affect
fMRI

description: Offspring of depressed parents are at risk for depression and recent evidence suggests that reduced positive affect (PA) may be a marker of risk. We investigated whether self-reports of PA and fMRI-measured striatal response to reward, a neural correlate of PA, are reduced in adolescent youth at high familial risk for depression (HR) relative to youth at low familial risk for depression (LR). Functional magnetic resonance imaging assessments were conducted with 14 HR and 12 LR youth. All youth completed an ecological momentary assessment protocol to measure PA in natural settings and a self-report measure of depression symptomatology. Analyses found that HR youth demonstrated lower striatal response than LR youth during both reward anticipation and outcome. However, after controlling for youth self-reports of depression, HR youth demonstrated lower striatal response than LR youth only during reward anticipation. No significant differences were found between HR and LR youth on subjective ratings of PA or depressive symptoms. Results are consistent with previous findings that reduced reward response is a marker of risk for depression, particularly during reward anticipation, even in the absence of (or accounting for) disrupted subjective mood. Further examinations of prospective associations between reward response and depression onset are needed. © 2013 The Authors.
Dusty winds II. Observational Implications
Creators: name: Ivezic, Zeljko
name: Elitzur, Moshe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare observations of AGB stars and predictions of the Elitzur & Ivezic (2001) steady-state radiatively driven dusty wind model. The model results are described by a set of similarity functions of a single independent variable, and imply general scaling relations among the system parameters. We find that the model properly reproduces various correlations among the observed quantities and demonstrate that dust drift through the gas has a major impact on the structure of most winds. From data for nearby oxygen-rich and carbon-rich mass-losing stars we find that (1) the dispersion in grain properties within each group is rather small; (2) both the dust cross-section per gas particle and the dust-to-gas mass ratio are similar for the two samples even though the stellar atmospheres and grain properties are very different; (3) the dust abundance in both outflows is significantly below the Galactic average, indicating that most of the Galactic dust is not stardust - contrary to popular belief, but in support of Draine (2009). Our model results can be easily applied to recent massive data sets, such as the Spitzer SAGE survey of the Large Magellanic Cloud, and incorporated in galaxy evolution models.
description: 11 pages, 12 figures
Optimal allocation to deferred income annuities
Creators: name: Habib, F.
name: Huang, H.
name: Mauskopf, A.
name: Nikolic, B.
name: Salisbury, T. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: In this paper we employ a lifecycle model that uses utility of consumption and bequest to determine an optimal Deferred Income Annuity (DIA) purchase policy. We lay out a mathematical framework to formalize the optimization process. The method and implementation of the optimization is explained, and the results are then analyzed. We extend our model to control for asset allocation and show how the purchase policy changes when one is allowed to vary asset allocation. Our results indicate that (i.) refundable DIAs are less appealing than non-refundable DIAs because of the loss of mortality credits; (ii.) the DIA allocation region is larger under the fixed asset allocation strategy due to it becoming a proxy for fixed-income allocation; and (iii.) when the investor is allowed to change asset-allocation, DIA allocation becomes less appealing. However, a case for higher DIA allocation can be made for those individuals who perceive their longevity to be higher than the population.
Fluctuations and oscillations in a simple epidemic model
Creators: name: Rozhnova, Ganna
name: Nunes, Ana
Publisher: name: arXiv
Year: 2008
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We show that the simplest stochastic epidemiological models with spatial correlations exhibit two types of oscillatory behaviour in the endemic phase. In a large parameter range, the oscillations are due to resonant amplification of stochastic fluctuations, a general mechanism first reported for predator-prey dynamics. In a narrow range of parameters that includes many infectious diseases which confer long lasting immunity the oscillations persist for infinite populations. This effect is apparent in simulations of the stochastic process in systems of variable size, and can be understood from the phase diagram of the deterministic pair approximation equations. The two mechanisms combined play a central role in explaining the ubiquity of oscillatory behaviour in real data and in simulation results of epidemic and other related models.
description: acknowledgments added; a typo in the discussion that follows Eq. (3) is corrected;