cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Machine Learning Exciton Dynamics
Creators: name: Häse, Florian
name: Valleau, Stéphanie
name: Pyzer-Knapp, Edward
name: Aspuru-Guzik, Alán
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Obtaining the exciton dynamics of large photosynthetic complexes by using mixed quantum mechanics/molecular mechanics (QM/MM) is computationally demanding. We propose a machine learning technique, multi-layer perceptrons, as a tool to reduce the time required to compute excited state energies. With this approach we predict time-dependent density functional theory (TDDFT) excited state energies of bacteriochlorophylls in the Fenna-Matthews-Olson (FMO) complex. Additionally we compute spectral densities and exciton populations from the predictions. Different methods to determine multi-layer perceptron training sets are introduced, leading to several initial data selections. In addition, we compute spectral densities and exciton populations. Once multi-layer perceptrons are trained, predicting excited state energies was found to be significantly faster than the corresponding QM/MM calculations. We showed that multi-layer perceptrons can successfully reproduce the energies of QM/MM calculations to a high degree of accuracy with prediction errors contained within 0.01 eV (0.5%). Spectral densities and exciton dynamics are also in agreement with the TDDFT results. The acceleration and accurate prediction of dynamics strongly encourage the combination of machine learning techniques with ab-initio methods.
The regulation of star formation in cool-core clusters: imprints on the stellar populations of brightest cluster galaxies
Creators: name: Loubser, S. I.
name: Babul, A.
name: Hoekstra, H.
name: Mahdavi, A.
name: Donahue, M.
name: Bildfell, C.
name: Voit, G. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A fraction of brightest cluster galaxies (BCGs) shows bright emission in the UV and the blue part of the optical spectrum, which has been interpreted as evidence of recent star formation. Most of these results are based on the analysis of broadband photometric data. Here, we study the optical spectra of a sample of 19 BCGs hosted by X-ray luminous galaxy clusters at 0.15 < z < 0.3, a subset from the Canadian Cluster Comparison Project (CCCP) sample. We identify plausible star formation histories of the galaxies by fitting Simple Stellar Populations (SSPs) as well as composite populations, consisting of a young stellar component superimposed on an intermediate/old stellar component, to accurately constrain their star formation histories. We detect prominent young (~200 Myr) stellar populations in 4 of the 19 galaxies. Of the four, the BCG in Abell 1835 shows remarkable A-type stellar features indicating a relatively large population of young stars, which is extremely unusual even amongst star forming BCGs. We constrain the mass contribution of these young components to the total stellar mass to be typically between 1% to 3%, but rising to 7% in Abell 1835. We find that the four of the BCGs with strong evidence for recent star formation (and only these four galaxies) are found within a projected distance of 5 kpc of their host cluster's X-ray peak, and the diffuse, X-ray gas surrounding the BCGs exhibit a ratio of the radiative cooling-to-free-fall time ($t_{c}/t_{ff}$) of < 10. These are also some of the clusters with the lowest central entropy. Our results are consistent with the predictions of the precipitation-driven star formation and AGN feedback model, in which the radiatively cooling diffuse gas is subject to local thermal instabilities once the instability parameter $t_{c}/t_{ff}$ falls below ~10, leading to the condensation and precipitation of cold gas. [Abridged]
description: 16 pages, accepted for publication in MNRAS
Urban Mining - Messemöbel aus Recyclingmaterial
Creators: name: (:Unkn) Unknown
Publisher: name: Hochschule Bremen
Year: 2022
Subjects: subject: Recycling
subject: Urban Mining
subject: Möbelbau
subject: 720

description: Semesterdokumentation studentischer Arbeiten aus dem Sommersemester 2022. Die Studierenden entwickelten - und bauten - Messemöbel aus gebrauchten Baumaterialien.
title: Imaging of Urethral Pathology Before and After Treatment: A Review with Emphasis on Conventional Urethrography
Creators: name: Santos Gomez, Idoia
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Trauma
subject: Inflammation
subject: Surgery
subject: Pyelography
subject: Cystography / Uretrography
subject: MR
subject: Fluoroscopy
subject: CT
subject: Urinary Tract / Bladder
subject: Pelvis
subject: Genital / Reproductive system male

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: To review adult male urethra anatomy and its evaluation with different imaging modalities, focusing on conventional urethrography (Retrograde Urethrography and Voiding Cystourethrography). To illustrate urethral diseases and its therapeutic...
The marathon runner’s smile:
Creators: name: Narhetali, Erita
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: This study aims to see the relationship between overconfidence and facial expressions among marathon runners. We use a large dataset of photographs from the Warsaw Marathon in 2019. Taking insight from Decision Affect Theory, we use automated facial expression encoding to analyze whether there are different action units displayed by those who experienced overconfidence and those who were not. We also try to see the interaction between overconfidence, facial expressions and other social decision making factors such as social comparison, risk preference, perceived safety behavior, and other demographic factors. We also conceptually replicate prior work on analyzing the bunching phenomenon on finishing time using round number and own forecasting time as reference points.
title: Multirow CT and CTA of Gastrointestinal Stromal Tumors (GIST): a review
Creators: name: Scandiffio, Rossella
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Computer Applications-Detection, diagnosis
subject: Computer Applications-3D
subject: CT-High Resolution
subject: CT-Angiography
subject: CT
subject: Oncology
subject: Gastrointestinal tract
subject: Abdomen
subject: Cancer
subject: Metastases

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: 1. To review the multirow computed tomography (CT) pattern of GISTs, in primary diagnosis and follow-up. 2. To expose a tailored CT / CTA (CT Angiography) acquisition and image processing protocol for the correct diagnosis and staging of...
Transient terahertz photoconductivity measurements of minority-carrier lifetime in tin sulfide thin films: Advanced metrology for an early-stage photovoltaic material
Creators: name: Jaramillo, R.
name: Sher, Meng-Ju
name: Ofori-Okai, Benjamin K.
name: Steinmann, V.
name: Yang, Chuanxi
name: Hartman, Katy
name: Nelson, Keith A.
name: Lindenberg, Aaron M.
name: Gordon, Roy G.
name: Buonassisi, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Materials research with a focus on enhancing the minority-carrier lifetime of the light-absorbing semiconductor is key to advancing solar energy technology for both early-stage and mature material platforms alike. Tin sulfide (SnS) is an absorber material with several clear advantages for manufacturing and deployment, but the record power conversion efficiency remains below 5%. We report measurements of bulk and interface minority-carrier recombination rates in SnS thin films using optical-pump, terahertz (THz)-probe transient photoconductivity (TPC) measurements. Post-growth thermal annealing in H_2S gas increases the minority-carrier lifetime, and oxidation of the surface reduces the surface recombination velocity. However, the minority-carrier lifetime remains below 100 ps for all tested combinations of growth technique and post-growth processing. Significant improvement in SnS solar cell performance will hinge on finding and mitigating as-yet-unknown recombination-active defects. We describe in detail our methodology for TPC experiments, and we share our data analysis routines as freely-available software.
Ferromagnetic Resonance of a YIG film in the Low Frequency Regime
Creators: name: Lee, Seongjae
name: Grudichak, Scott
name: Sklenar, Joseph
name: Tsai, C. C.
name: Jang, Moongyu
name: Yang, Qinghui
name: Zhang, Huaiwu
name: Ketterson, John B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An improved method for characterizing the magnetic anisotropy of films with cubic symmetry is described and is applied to an yttrium iron garnet (111) film. Analysis of the FMR spectra performed both in-plane and out-of-plane from 0.7 to 8 GHz yielded the magnetic anisotropy constants as well as the saturation magnetization. The field at which FMR is observed turns out to be quite sensitive to anisotropy constants (by more than a factor ten) in the low frequency (< 2 GHz) regime and when the orientation of the magnetic field is nearly normal to the sample plane; the restoring force on the magnetization arising from the magnetocrystalline anisotropy fields is then comparable to that from the external field, thereby allowing the anisotropy constants to be determined with greater accuracy. In this region, unusual dynamical behaviors are observed such as multiple resonances and a switching of FMR resonance with only a 1 degree change in field orientation at 0.7 GHz.
Mott glass phase in a diluted bilayer Heisenberg quantum antiferromagnet
Creators: name: Ma, Nv-Sen
name: Sandvik, Anders W.
name: Yao, Dao-Xin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use quantum Monte Carlo simulations to study a dimer-diluted $S=1/2$ Heisenberg model on a bilayer square lattice with intralayer interaction $J_{1}$ and interlayer interaction $J_{2}$. Below the classical percolation threshold $p_c$, the system has three phases reachable by tuning the interaction ratio $g=J_{2}/J_{1}$: a N$\acute{e}$el ordered phase, a gapless quantum glass phase, and a gapped quantum paramagnetic phase. We present the ground-state phase diagram in the plane of dilution $p$ and interaction ratio $g$. The quantum glass phase is certified to be of the gapless Mott glass type, having a uniform susceptibility vanishing at zero temperature $T$ and following a stretched exponential form at $T>0$; $χ_u \sim \exp(-b/T^α)$ with $α< 1$. At the phase transition point from N$\acute{e}$el ordered to Mott glass, we find that the critical exponents are different from those of the clean system described by the standard $O(3)$ universality class in 2+1 dimensions.
description: 6 pages, 4 figures, presented at XXVI IUPAP Conference on Computational Physics (CCP2014)
title: Radiation Dose Reduction in Pediatric Chest CT: BMI-based kVp as an Adjunct Method
Creators: name: Folio, Les
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Dosimetric comparison
subject: Radiation safety
subject: Diagnostic procedure
subject: CT
subject: Radioprotection / Radiation dose
subject: Paediatric
subject: Management

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Introduction: Machine improvements result in technological advances that can improve image quality without increase in radiation dose. However, many older scanners cannot be retrofit with these technological capabilities and global distribution of...
Beyond restitution? Gender-just remedies for displacement and dispossession in Sudan and Ethiopia
Creators: name: Korus, Agnieszka A.
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: This thesis examines the mainstream approaches to women’s housing, land and property rights in the context of internal displacement and dispossession. The research adopted feminist methodological framework and case study approach to explore these issues in Darfur, Sudan and the Somali-Oromia regions of Ethiopia. Furthermore, the research was undertaken in a dual role as a practitioner-researcher. This study makes several original contributions. Using feminist theories and methods, the study developed a different perspective regarding remedies for forced displacement and HLP losses, a perspective which takes gender harms as a starting point. This approach problematised harms and drew attention to their multifaceted nature, specifically social, political and economic inequalities that affect women’s vulnerability to become victims of violence. By adopting intersectionality as a critical feminist lens, the research drew attention to variety of conflict-related experiences, nuanced account of relations of power on the ground, and multiple manifestations of agency. Finally, the study drew attention to displacement and HLP losses, the most common features of modern conflicts but ones that are considered natural and inevitable consequences of war for which there are limited remedies. HLP is an essential concept in the context of conflictinduced displacement and remedies that can be used as a platform to transform ideas about femininity and masculinity that perpetuate harms and gender inequality. By pointing out the multidimensional character of HLP, not only as an economic asset but a source of social status, cultural identity, representation and political power, the study highlights similarly multifaceted nature of harm and the ways in which economic disadvantage and cultural disrespect are entwined and support one another and the ways this relationship influences access to economic resources, such as HLP and political power.
The Ramachandran number: an order parameter for protein geometry
Creators: name: Mannige, Ranjan V.
name: Kundu, Joyjit
name: Whitelam, Stephen
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Three-dimensional protein structures usually contain regions of local order, called secondary structure, such as $α$-helices and $β$-sheets. Secondary structure is characterized by the local rotational state of the protein backbone, quantified by two dihedral angles called $ϕ$ and $ψ$. Particular types of secondary structure can generally be described by a single (diffuse) location on a two-dimensional plot drawn in the space of the angles $ϕ$ and $ψ$, called a Ramachandran plot. By contrast, a recently-discovered nanomaterial made from peptoids, structural isomers of peptides, displays a secondary-structure motif corresponding to two regions on the Ramachandran plot [Mannige et al., Nature 526, 415 (2015)]. In order to describe such `higher-order' secondary structure in a compact way we introduce here a means of describing regions on the Ramachandran plot in terms of a single Ramachandran number, ${\mathcal{R}}$, which is a structurally meaningful combination of $ϕ$ and $ψ$. We show that the potential applications of ${\mathcal{R}}$ are numerous: it can be used to describe the geometric content of protein structures, and can be used to draw diagrams that reveal, at a glance, the frequency of occurrence of regular secondary structures and disordered regions in large protein datasets. We propose that ${\mathcal{R}}$ might be used as an order parameter for protein geometry for a wide range of applications.
Exiling Expatriates: The Disappearing American Colony in Havana, 1959-1960
Creators: name: Finesurrey, Samuel R.
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: The American Colony in Havana was a collection of 4,000 U.S. citizens who had made the city their home over the first sixty years of the twentieth-century. The members of this diverse community held different interests and varied reasons for settling in Cuban society. Breaking from traditional descriptions of the diplomatic failure between the United States and Cuba in the late 1950s and early 1960s, this paper exposes a unique American lens through this Colony. The commitment by these colonists to ensure a peaceful solution between their home and their homeland represents an opportunity to go beyond the binary that pins the interests of the U.S. power elite against a radical Cuba. As Cuba transitioned from the Batista dictatorship to the revolutionary government in 1959, these U.S. citizens, many of whom had arrived decades earlier, hoped and often fought for their community's survival. Accomplishing diplomacy would assure a place for these American colonist in a increasingly autonomous Cuba.
TEACHER’S CAPABILITIES IN USING MODULAR DISTANCE LEARNING IN SCIENCE DURING COVID-19 PANDEMIC” .pdf
Creators: name: CARABIT, MYYLES JANINE
Publisher: name: figshare
Year: 2023
Subjects: Continuing and community education

description: This study aimed to determine the teachers’ capabilities in using modular distance in science during COVID-19 pandemic. Specifically, folds were answered:  the professional background of the Science teachers in San Andres District and San Narciso District in terms of: Highest educational attainment, Length of service, Trainings and seminars attended, Number of years in teaching science; the capabilities of the Science teachers in using modular distance learning terms of: Instructional Capability, Technological Capability, Technical Capability, Management Capability and Logistical capability; the significant difference between the two groups of respondents on teachers’ capabilities in using modular distance learning along the different aspects; The significant difference in the teachers’ capabilities in using modular distance learning due to their professional background; and the virtual training design (webinar) that can be formulated based from the findings of the study.
title: Effect of b value on the apparent diffusion coefficients measurement and its reproducibility in diffusion-weighted MRI of liver
Creators: name: Chen, Xin
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Liver
subject: MR physics
subject: MR-Diffusion/Perfusion
subject: Technical aspects
subject: Image compression
subject: Image verification

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Diffusion-weighted imaging (DWI) detects microscopic motions of water which, in biologic tissues, include molecular diffusion and perfusion(1).The ADC,expressed in mm 2 /s,as a quantitative parameter calculated from DWI, provides a non-invasive...
Air passivation of chalcogen vacancies in two-dimensional semiconductors
Creators: name: Liu, Yuanyue
name: Stradins, Pauls
name: Wei, Su-Huai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Defects play important roles in semiconductors (SCs). Unlike those in bulk SCs, defects in two-dimensional (2D) SCs are exposed to the surrounding environment, which can potentially modify their properties/functions. Air is a common environment; yet its impact on the defects in 2D SCs still remains elusive. In this work, we unravel the interaction between air and chalcogen vacancies (VX)-the most typical defects in 2D SCs. We find that, although the interaction is weak for most molecules in air, O2 can be chemisorbed at VX with a barrier that correlates with the SC cohesive energy and can be overcame even at room temperature for certain SCs. Importantly, the chemisorbed O2 changes the VX from commonly-believed harmful carrier-traps to electronically benign sites. This unusual behavior originates from the iso-valence between O2 and X when bonded with metal. Based on these findings, we propose a facile approach to improve the performance of 2D SCs by using air to passivate the defects.
title: Serial CT and FDG-PET/CT findings of pleural change after talc pleurodesis in patients with history of malignancy
Creators: name: Kim, Beom su
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Inflammation
subject: Foreign bodies
subject: Cancer
subject: Contrast agent-intravenous
subject: PET-CT
subject: CT
subject: Thorax

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Pleurodesis is defined as the symphysis between the visceral and parietal pleura that prevents the accumulation of either air or liquid in the pleural space. Pleurodesis is performed by installation of sclerosing agents into the pleural cavity or by...
Post-Disaster Literatures and Cultural Reconstruction
Creators: name: Clarke, Katherine Karcher
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Counteracting sensational or simplistic representations of post-disaster societies, chronicle literatures offer the writer an occasion to reappropriate histories and cultural identities. The text thus becomes a means to assert a community's worth and vitality while also acting as a source of solidarity that may aid a collective cultural restoration that must be organized, established, and supported before material reconstruction may occur. I propose to examine these literatures, specifically using texts that were created following both Hurricane Katrina and the January 12, 2010 Haitian earthquake, in order to explore how, for what reasons, and to what purpose, the written and spoken word is used in the process of reconstruction.
Crud Factor
Creators: name: Macnamara, Brooke
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Past social scientist have suggested that every measured trait or attribute correlates to some extent with everything else in the social sciences (i.e., “ambient correlational noise” Lykken, 1968; or the “Crud Factor” Meehl, 1990). Lykken (1968) estimated that this “ambient correlational noise” is r ≈ .20. However, the idea has little empirical foundation and the estimate is impressionistic rather than evidential.
Star formation in quasar hosts and the origin of radio emission in radio-quiet quasars
Creators: name: Zakamska, Nadia L.
name: Lampayan, Kelly
name: Petric, Andreea
name: Dicken, Daniel
name: Greene, Jenny E.
name: Heckman, Timothy M.
name: Hickox, Ryan C.
name: Ho, Luis C.
name: Krolik, Julian H.
name: Nesvadba, Nicole P. H.
name: Strauss, Michael A.
name: Geach, James E.
name: Oguri, Masamune
name: Strateva, Iskra V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Radio emission from radio-quiet quasars may be due to star formation in the quasar host galaxy, to a jet launched by the supermassive black hole, or to relativistic particles accelerated in a wide-angle radiatively-driven outflow. In this paper we examine whether radio emission from radio-quiet quasars is a byproduct of star formation in their hosts. To this end we use infrared spectroscopy and photometry from Spitzer and Herschel to estimate or place upper limits on star formation rates in hosts of ~300 obscured and unobscured quasars at z<1. We find that low-ionization forbidden emission lines such as [NeII] and [NeIII] are likely dominated by quasar ionization and do not provide reliable star formation diagnostics in quasar hosts, while PAH emission features may be suppressed due to the destruction of PAH molecules by the quasar radiation field. While the bolometric luminosities of our sources are dominated by the quasars, the 160 micron fluxes are likely dominated by star formation, but they too should be used with caution. We estimate median star formation rates to be 6-29 Msun/year, with obscured quasars at the high end of this range. This star formation rate is insufficient to explain the observed radio emission from quasars by an order of magnitude, with log(L_radio, observed/L_radio, SF)=0.6-1.3 depending on quasar type and star formation estimator. Although radio-quiet quasars in our sample lie close to the 8-1000 micron infrared / radio correlation characteristic of the star-forming galaxies, both their infrared emission and their radio emission are dominated by the quasar activity, not by the host galaxy.
description: 23 pages, in press in MNRAS, full tables 1 and 2 available at http://www.pha.jhu.edu/~zakamska/data.htm
title: A Biomechanical Approach to CT of Dorso-Lumbar Spine Trauma- Spectrum of MDCT Findings and Implications
Creators: name: Raniga, Sameer
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Education
subject: CT
subject: Musculoskeletal spine
subject: Trauma

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: In this exhibit, we will review: Biomechanical principles of basic and complex mechanisms of injuries of acute thoraco-lumbar spine trauma. MDCT “Fingerprints” predicting a particular mechanism of injury. Developing an “intuitive approach”...
Report on the Final release of the tool for the olive oil sector
Creators: name: A. Dell'Aquila,
name: L. Ponti
name: C. Giannakopoulos,
name: K. Varotsos
name: R. Marcos
Publisher: name: Zenodo
Year: 2021

description: In this report, the contents of the MED-GOLD’s repository for the olive climate service tool are briefly described
Behavioral Science Forecasting Collaborative - Phase 1
Creators: name: Twardus, Oliver
name: Grossmann, Igor
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: How will the COVID-19 pandemic change social life? Using the COVID-19 pandemic as a naturalistic experiment, we will explore processes guiding scientists’ ex-ante forecasts for phenomena of broad societal relevance, which have been theoretically linked to pathogen threat: gender bias, ideological preferences, political polarization, prejudice, and well-being. In a crowdsourced forecasting tournament, entrants were provided with standardized data for 39 prior months for a suite of variables and submitted forecasts for a 12 month period following the initial projected peak of the pandemic in the US. This pre-registration contains the predictions entrants made per domain, along with details of the methods they used to develop their predictions.
title: Clinical predictors of punctate white matter lesions in premature babies
Creators: name: Tzarouchi, Loukia
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Paediatric
subject: MR
subject: Screening
subject: Imaging sequences

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Purpose: Punctate white matter lesions (PWML)are a common finding in preterminfants. PWML can be recognized on MR images inthe unmyelinated white matter as hypersignal on T1-weighted imaging and hyposignal on T2-weighted imaging. These signal...
Transition-Region/Coronal Signatures and Magnetic Setting of Sunspot Penumbral Jets: {\it Hinode} (SOT/FG), Hi-C and {\it SDO}/AIA Observations
Creators: name: Tiwari, Sanjiv K.
name: Moore, Ronald L.
name: Winebarger, Amy R.
name: Alpert, Shane E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Penumbral microjets (PJs) are transient narrow bright features in the chromosphere of sunspot penumbrae, first characterized by Katsukawa et al (2007) using the \CaII\ H-line filter on {\it Hinode}'s Solar Optical Telescope (SOT). It was proposed that the PJs form as a result of reconnection between two magnetic components of penumbra (spines and interspines), and that they could contribute to the transition region (TR) and coronal heating above sunspot penumbrae. We propose a modified picture of formation of PJs based on recent results on internal structure of sunspot penumbral filaments. Using data of a sunspot from {\it Hinode}/SOT, High Resolution Coronal Imager, and different passbands of the Atmospheric Imaging Assembly (AIA) onboard the {\it Solar Dynamics Observatory}, we examine whether PJs have signatures in the TR and corona. We find hardly any discernible signature of normal PJs in any AIA passbands, except a few of them showing up in the 1600 Å images. However, we discovered exceptionally stronger jets with similar lifetimes but bigger sizes (up to 600 km wide) occurring repeatedly in a few locations in the penumbra, where evidence of patches of opposite polarity fields at the tails of some penumbral filaments is seen in Stokes-V images. These large tail PJs do display signatures in the TR. Whether they have any coronal-temperature plasma is ambiguous. We infer that none of the PJs, including the large tail PJs, directly heat the corona in ARs significantly, but any penumbral jet might drive some coronal heating indirectly via generation of Alfvén waves and/or braiding of the coronal field.
description: 11 pages, 8 figures, to appear in ApJ, movies temporarily at: https://www.dropbox.com/sh/xgv2xosho1gxo91/AACFp40h8GEKY8cAYTZH7lb0a?dl=0
Search for gas bulk motions in eight nearby clusters of galaxies with Suzaku
Creators: name: Ota, Naomi
name: Yoshida, Hiroko
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: To search for bulk motions of the intracluster medium, we analyzed the X-ray spectra taken with the Suzaku satellite and measured the Doppler shift of Fe-K line emission from eight nearby clusters of galaxies with various X-ray morphologies. In the cores of the Centaurus and Perseus clusters, the gas bulk velocity does not exceed the sound velocity, which confirms the results of previous research. For the Cen45 subcluster, we found that the radial velocity relative to the Centaurus core, <780 km s^-1, is significantly smaller than that reported in the optical band at the 3.9 sigma level, which suggests an offset between the gas and galaxy distributions along the line of sight due to the subcluster merger. In A2199, A2142, A3667, and A133, no significant bulk motion was detected, indicating an upper limit on the radial velocity of 3000-4000 km s^-1. A sign of large bulk velocity in excess of the instrumental calibration uncertainty was found near the center of cool-core cluster A2029 and in the subcluster of the merging cluster A2255, suggesting that the nonthermal pressure support is not negligible in estimating the total gravitational mass of not only merging clusters but also relaxed clusters as predicted by numerical simulations. To improve the significance of the detection, however, a further examination by follow-up observations is required. The present study provides a pilot survey prior to the future high-resolution spectroscopy with ASTRO-H, which is expected to play a critical role in revealing the dynamical evolutions of clusters.
description: 14 pages, 5 figures, PASJ accepted
Towards a specific cognitive vulnerability model of depression
Creators: name: Browne, Caroline B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: This study examined domain specific cognitive attributions and domain specific life events as predictors of depressive symptoms in a sample of 100 adolescents aged 13-14 years. Measures of depressive symptoms, depressogenic attributions, and life events were administered at an initial time point, and depressive symptoms were re-assessed 11 months later. Two expert coders sorted cognitive attributions and negative life events into specific domains (kappa = 1.0). Results revealed mixed support for a domain specific vulnerability model. Dependent interpersonal stressors significantly predicted depressive symptoms in girls, but not in boys. Additionally, the interaction between achievement domain maladaptive cognitions and non-interpersonal stressors was significant for boys only. These results support the notion that a specific cognitive vulnerability may moderate the relationship between non-interpersonal life events and the development of depressive symptoms in boys. The hypothesized interaction between interpersonal domain negative attributions and dependent interpersonal stressors was not found for girls.
Counterintuitive issues in the charge transport through molecular junctions
Creators: name: Baldea, Ioan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Whether at phenomenological or microscopic levels, most theoretical approaches to charge transport through molecular junctions postulate or attempt to justify microscopically the existence of a dominant molecular orbital (MO). Within such single level descriptions, experimental current-voltage I-V curves are sometimes/often analyzed by using analytical formulas expressing the current as a cubic expansion in terms of the applied voltage V, and relate possible V-driven shifts of the level energy offset relative to the metallic Fermi energy \varepsilon_{0} to an asymmetry of molecule-electrode couplings or to an asymmetric location of the "center of gravity" of the MO with respect to electrodes. In this paper, we present results demonstrating the failure of these intuitive expectations. For example, we show how typical data processing based on cubic expansions yields a value of \varepsilon_0 underestimated by a typical factor of about two. When compared to theoretical results of DFT approaches, which typically underestimate the HOMO-LUMO gap by a similar factor, this may create the false impression of "agreement" with experiments in situations where this is actually not the case. Further, such cubic expansions yield model parameter values dependent on the bias range width employed for fitting, which is unacceptable physically. Finally, we present an example demonstrating that, counter-intuitively, the bias-induced change in the energy of an MO located much closer to an electrode can occur in a direction that is opposite to the change in the Fermi energy of that electrode. This is contrary to what one expects based on a "lever rule" argument, according to which the MO "feels" the local value of the electric potential, which is assumed to vary linearly across the junction and is closer to the potential of the closer electrode.
title: Negative axillary ultrasound can exclude advanced nodal disease in breast cancer patients
Creators: name: Lobbes, Marcus
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Breast
subject: Ultrasound
subject: Biopsy
subject: Staging

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: The sentinel lymph node biopsy (SLNB) is regarded as standard surgical nodal staging for clinically node negative breast cancer patients. It replaced routine axillary lymph node dissection (ALND) in case of absence of a sentinel lymph node (SLN)...
KIC 8462852 - The Infrared Flux
Creators: name: Marengo, Massimo
name: Hulsebus, Alan
name: Willis, Sarah
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We analyzed the warm Spitzer/IRAC data of KIC 8462852. We found no evidence of infrared excess at 3.6 micron and a small excess of 0.43 +/- 0.18 mJy at 4.5 micron, below the 3 sigma threshold necessary to claim a detection. The lack of strong infrared excess 2 years after the events responsible for the unusual light curve observed by Kepler, further disfavors the scenarios involving a catastrophic collision in a KIC 8462852 asteroid belt, a giant impact disrupting a planet in the system or a population of a dust-enshrouded planetesimals. The scenario invoking the fragmentation of a family of comets on a highly elliptical orbit is instead consistent with the lack of strong infrared excess found by our analysis.
description: Published on The Astrophysical Journal Letters
title: Dual source CT coronary angiography: heart rate and image quality
Creators: name: Laffranchi, Francesco
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Cardiac
subject: CT-Angiography
subject: Technology assessment

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Coronary ECG-gated CT angiography (CCTA) performed with last generation Dual Source Scanners (DSCT) has emerged as a robust noninvasive imaging modality that enables to accurately assess Coronary Artery Disease (CAD) in selected patients [1,2]. It...
Electronic and Magnetic Properties of single Fe atoms on a CuN Surface; Effects of Electron Correlations
Creators: name: Panda, S. K.
name: Di Marco, I.
name: Grånäs, O.
name: Eriksson, O.
name: Fransson, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The electronic structure and magnetic properties of a single Fe adatom on a CuN surface have been studied using density functional theory in the local spin density approximation (LSDA), the LSDA+U approach and the local density approximation plus dynamical mean-field theory (LDA+DMFT). The impurity problem in LDA+DMFT is solved through exact diagonalization and in the Hubbard-I approximation. The comparison of the one-particle spectral functions obtained from LSDA, LSDA+U and LDA+DMFT show the importance of dynamical correlations for the electronic structure of this system. Most importantly, we focused on the magnetic anisotropy and found that neither LSDA, nor LSDA+U can explain the measured, high values of the axial and transverse anisotropy parameters. Instead, the spin excitation energies obtained from our LDA+DMFT approach with exact diagonalization agree significantly better with experimental data. This affirms the importance of treating fluctuating magnetic moments through a realistic many-body treatment when describing this class of nano-magnetic systems. Moreover, it facilitates insight to the role of the hybridization with surrounding orbitals.
description: 17 pages, 4 figures
title: Cerebral hemi-atrophy What Radiologists need to know?
Creators: name: Husen, Yousuf
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Ischaemia / Infarction
subject: eLearning
subject: Education
subject: MR
subject: Paediatric
subject: Neuroradiology brain
subject: CNS

description: Learning objectives Background Imaging findings OR Procedure details Conclusion References Personal Information
description: Learning objectives: To understand the pathophysiology, imaging findings and differential diagnosis of cerebral hemiatrophy also known as Dyke Davidoff Masson...
Demographic Shifts and Demographic Ignorance 3 - Additional Preregistration Information
Creators: name: Simon, Jeremy
name: Gutsell, Jennifer
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Dehumanization
subject: Demographic Ignorance
subject: Demographic Shift
subject: Explicit Bias
subject: Implicit Bias
subject: Population Innumeracy
subject: Prejudice

description: Continued work on how perceptions of population demographics affect prejudice. This adds information to account for slight modifications to our analysis plan as a result of pretesting.
R&D on GEM Detectors for Forward Tracking at a Future Electron-Ion Collider
Creators: name: Zhang, Aiwu
name: Bhopatkar, Vallary
name: Hohlmann, Marcus
name: Bai, Xinzhan
name: Gnanvo, Kondo
name: Liyanage, Nilanga K.
name: Posik, Matt
name: Surrow, Bernd
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report the status of R&D on large triple-GEM detectors for a forward tracker (FT) in an experiment at a future Electron Ion Collider (EIC) that will improve our understanding of QCD. We have designed a detector prototype specifically targeted for the EIC-FT, which has a trapezoidal shape with 30.1 degrees opening angle. We are investigating different detector assembly techniques and signal readout technologies, but have designed a common GEM foil to minimize NRE cost for foil production. The assembly techniques comprise either a purely mechanical method including foil stretching as pioneered by CMS but with certain modifications, or gluing foils to frames that are then assembled mechanically, or gluing foils to frames that are then glued together. The first two assembly techniques allow for re-opening chambers so that a GEM foil can be replaced if it is damaged. For readout technologies, we are pursuing a cost-effective one-dimensional readout with wide zigzag strips that maintains reasonable spatial resolution, as well two-dimensional readouts - one with stereo-angle (u-v) strips and another with r-phi strips. In addition, we aim at an overall low-mass detector design to facilitate good energy resolution for electrons scattered at low momenta. We present design for GEM foils and other detector parts, which we plan to entirely acquire from U.S. companies.
description: 4 pages, 8 figures, submitted to Proc. 2015 IEEE Nucl. Sci. Symposium, San Diego, CA
title: Intussusception reduction: the Northern Irish experience
Creators: name: Paterson, Annie
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Paediatric
subject: Gastrointestinal tract
subject: Ultrasound
subject: Fluoroscopy
subject: Outcomes analysis
subject: Quality assurance

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Intussusception is the commonest cause of acute bowel obstruction in children and if left untreated may progress rapidly to sepsis and patient death. The telescoping of bowel into itself is most eloquently explained by the illustration in Figure 1...
A PORTABLE VACCINE STORAGE CONTAINER
Creators: name: Jha, Nishant
Publisher: name: figshare
Year: 2023
Subjects: Biomedical engineering not elsewhere classified

description: Present invention discloses a portable vaccine storage container comprises a controller (101), power supply (102), Temperature controller setup (103), condensing agents (104), Ambient temperature sensor (105), and Peltier heat pump (106). The principle of Peltier Effect; when current is passed through the system, heat is generated at one wall/junction and gets absorbed at another junction.
The minimum rank problem for circulants
Creators: name: Deaett, Louis
name: Meyer, Seth A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C50 (Primary) 15A03 (Secondary)

description: The minimum rank problem is to determine for a graph $G$ the smallest rank of a Hermitian (or real symmetric) matrix whose off-diagonal zero-nonzero pattern is that of the adjacency matrix of $G$. Here $G$ is taken to be a circulant graph, and only circulant matrices are considered. The resulting graph parameter is termed the minimum circulant rank of the graph. This value is determined for every circulant graph in which a vertex neighborhood forms a consecutive set, and in this case is shown to coincide with the usual minimum rank. Under the additional restriction to positive semidefinite matrices, the resulting parameter is shown to be equal to the smallest number of dimensions in which the graph has an orthogonal representation with a certain symmetry property, and also to the smallest number of terms appearing among a certain family of polynomials determined by the graph. This value is then determined when the number of vertices is prime. The analogous parameter over the reals is also investigated.
description: 27 pages, 3 figures; to appear in Linear Algebra and its Applications
title: C-arm computed tomography combining with a new remote-operated positioning and guidance system for guidance of minimally invasive spine interventions
Creators: name: Zangos, Stephan
Publisher: name: European Congress of Radiology
Year: 2013
Subjects: subject: Interventional non-vascular
subject: Fluoroscopy
subject: Instrumentation
subject: Computer Applications-3D

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: To report our experience using C-arm cone beam computed tomography (C-arm CBCT) combined with a new remote-operated positioning and guidance system iSYS 1 (iSYS Medizintechnik, Kitzbühel, Austria) for needle guidance during spine...
Participant and spectator scaling of spectator fragments in Au+Au and Cu+Cu collisions at sqrt(sNN) = 19.6 and 22.4 GeV
Creators: name: Alver, B.
name: Back, B. B.
name: Baker, M. D.
name: Ballintijn, M.
name: Barton, D. S.
name: Betts, R. R.
name: Bickley, A. A.
name: Bindel, R.
name: Budzanowski, A.
name: Busza, W.
name: Carroll, A.
name: Chai, Z.
name: Chetluru, V.
name: Decowski, M. P.
name: Garcia, E.
name: Gburek, T.
name: George, N.
name: Gulbrandsen, K.
name: Gushue, S.
name: Halliwell, C.
name: Hamblen, J.
name: Harnarine, I.
name: Heintzelman, G. A.
name: Henderson, C.
name: Hofman, D. J.
name: Hollis, R. S.
name: Holynski, R.
name: Holzman, B.
name: Iordanova, A.
name: Johnson, E.
name: Kane, J. L.
name: Katzy, J.
name: Khan, N.
name: Kucewicz, W.
name: Kulinich, P.
name: Kuo, C. M.
name: Li, W.
name: Lin, W. T.
name: Loizides, C.
name: Manly, S.
name: McLeod, D.
name: Mignerey, A. C.
name: Nouicer, R.
name: Olszewski, A.
name: Pak, R.
name: Park, I. C.
name: Pernegger, H.
name: Reed, C.
name: Remsberg, L. P.
name: Reuter, M.
name: Richardson, E.
name: Roland, C.
name: Roland, G.
name: Rosenberg, L.
name: Sagerer, J.
name: Sarin, P.
name: Sawicki, P.
name: Sedykh, I.
name: Skulski, W.
name: Smith, C. E.
name: Stankiewicz, M. A.
name: Steinberg, P.
name: Stephans, G. S. F.
name: Sukhanov, A.
name: Szostak, A.
name: Tang, J. L.
name: Tonjes, M. B.
name: Trzupek, A.
name: Vale, C.
name: van Nieuwenhuizen, G. J.
name: Vaurynovich, S. S.
name: Verdier, R.
name: Veres, G. I.
name: Walters, P.
name: Wenger, E.
name: Willhelm, D.
name: Wolfs, F. L. H.
name: Wosiek, B.
name: Wozniak, K.
name: Wuosmaa, A. H.
name: Wyngaardt, S.
name: Wyslouch, B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Spectator fragments resulting from relativistic heavy ion collisions, consisting of single protons and neutrons along with groups of stable nuclear fragments up to Nitrogen (Z=7), are measured in PHOBOS. These fragments are observed in Au+Au (sqrt(sNN)=19.6 GeV) and Cu+Cu (22.4 GeV) collisions at high pseudorapidity ($η$). The dominant multiply-charged fragment is the tightly bound Helium ($α$), with Lithium, Beryllium, and Boron all clearly seen as a function of collision centrality and pseudorapidity. We observe that in Cu+Cu collisions, it becomes much more favorable for the $α$ fragments to be released than Lithium. The yields of fragments approximately scale with the number of spectator nucleons, independent of the colliding ion. The shapes of the pseudorapidity distributions of fragments indicate that the average deflection of the fragments away from the beam direction increases for more central collisions. A detailed comparison of the shapes for $α$ and Lithium fragments indicates that the centrality dependence of the deflections favors a scaling with the number of participants in the collision.
description: To be submitted to PRC 17 pages, 19 figures