cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
State-resolved valence shell photoionization of Be-like ions: experiment and theory
Creators: name: Müller, A
name: Schippers, S
name: Phaneuf, R. A.
name: Kilcoyne, A. L. D.
name: Bräuning, H.
name: Schlachter, A. S.
name: Lu, M.
name: McLaughlin, B. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: High-resolution photoionization experiments were carried out using beams of Be-like C$^{2+}$, N$^{3+}$, and O$^{4+}$ ions with roughly equal populations of the $^1$S ground-state and the $^3$P$^o$ manifold of metastable components. The energy scales of the experiments are calibrated with uncertainties of 1 to 10 meV depending on photon energy. Resolving powers beyond 20,000 were reached allowing for the separation of contributions from the individual metastable $^3$P$^o_0$, $^3$P$^o_1$, and $^3$P$^o_2$ states. The measured data compare favourably with semi-relativistic Breit-Pauli R-matrix
description: 23 figures and 3 tables
Empirical Models for Estimating Significant Wave Height Using RADARSAT-2 Data
Creators: name: Ma, Meng
Publisher: name: Schulich School of Engineering
Year: 2019
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Remote Sensing
subject: Environmental Sciences
subject: Engineering--Environmental

description: The images captured by Synthetic Aperture Radar (SAR) are useful for retrieving ocean wave parameters. The objective of this study is to establish empirical algorithms to estimate significant wave height (Hs) from RADARSAT-2 (RS2) fine-quad (FQ) beam mode images. This is the first time to retrieve Hs by utilizing around 1,400 collocated samples over the eastern and western North America. The fitting procedures are based on linear regression and neural network. The models are validated against to buoy observations. Unlike the most related work, this study explores the effects of incidence angle and polarization on the estimation of Hs. I report five accuracy metrics and introduce a novel cost function to assess and compare the models' performance. Finally, the proposed two types of models both show a good agreement with buoy observations. The RMSE and R could reach to 0.26m and 0.97, respectively.
Secure Overlay Services
Creators: name: Keromytis, Angelos D.
name: Misra, Vishal
name: Rubenstein, Daniel Stuart
Publisher: name: Columbia University
Year: 2002
Subjects: Computer science

description: Denial of service (DoS) attacks continue to threaten the reliability of networking systems. Previous approaches for protecting networks from DoS attacks are reactive in that they wait for an attack to be launched before taking appropriate measures to protect the network. This leaves the door open for other attacks that use more sophisticated methods to mask their traffic.We propose an architecture called Secure Overlay Services (SOS) that proactively prevents DoS attacks, geared toward supporting Emergency Services or similar types of communication. The architecture is constructed using a combination of secure overlay tunneling, routing via consistent hashing, and filtering. We reduce the probability of successful attacks by (i) performing intensive filtering near protected network edges, pushing the attack point perimeter into the core of the network, where high-speed routers can handle the volume of attack traffic, and (ii) introducing randomness and anonymity into the architecture, making it difficult for an attacker to target nodes along the path to a specific SOS-protected destination.Using simple analytical models, we evaluate the likelihood that an attacker can successfully launch a DoS attack against an SOS-protected network. Our analysis demonstrates that such an architecture reduces the likelihood of a successful attack to minuscule levels.
title: SLN detection with Iron Oxide Particles: Late Effect on Breast MRI
Creators: name: Aribal, Erkin
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Observational
subject: Retrospective
subject: Artifacts
subject: Technical aspects
subject: MR
subject: Breast
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Sentinel lymph node detection with iron oxide particles (Sentimag® technique) is a new technique. However, deposition of the iron oxide particles in the breast tissue may cause artifacts in the follow-up MRI examination (1). We aim to evaluate the...
Microcavity vacuum tube pressure sensor for robot tactile sensing
Creators: name: White, R. C.
name: Allen, Peter K.
name: Jiang, J. C.
Publisher: name: Columbia University
Year: 1991
Subjects: Robotics

description: A novel microstructure pressure sensor for robot tactile sensing is currently under development. The design is based on a silicon vacuum diode configuration, which has a cold field emission cathode and a movable diaphragm anode. The cathode is a sharp tip. When a positive potential difference is applied between the cathode tip and anode, an electric field is generated at the tip that allows electrons to tunnel from inside the cathode to the vacuum outside, if it exceeds about 5×107 V/cm. The field at the tip and the quantity of electrons emitted or emission current are controlled by the anode potential. The anode deflects in response to differential pressure to produce current-change.
The association between degree of hearing loss and depression in older adults
Creators: name: MacDonald, Mary
Publisher: name: University of British Columbia
Year: 2011

description: Hearing loss is one of the most prevalent chronic conditions that can affect quality of life among older adults. Evidence from large-scale health studies of self-reported hearing loss and depression documents a strong link between untreated hearing loss and depression in older adults (e.g.; National Council on the Aging, 2000). These studies also show that as self-reported severity of hearing loss increases, the prevalence of self-reported depression increases. However, research has yet to establish that this correlation does not simply represent the underlying response bias associated with self-ratings of hearing loss. If hearing loss contributes towards symptoms of depression, then it is vital that the relationship is understood so that the symptoms of each can be treated appropriately. The primary purpose of the current study was to investigate the relationship between hearing loss and depressive symptoms using objective measures of hearing, thereby removing the effects of self-report bias from estimates of hearing loss. Forty-five participants, who were not receiving treatment for hearing loss, aged 65 and older, were recruited from local geriatric clinics and public venues. Three measures were administered: i) objective measures of hearing: pure tone audiometry and otoacoustic emissions; ii) a subjective measure of hearing: the Hearing Handicap Inventory for the Elderly (HHIE); and iii) a self-assessment of depression: the Center for Epidemiological Studies Depression (CES-D) scale. Multiple regression analysis showed that there was a significant relationship between objectively measured hearing loss and depressive symptoms (r²= 0.102, p<0.05). Depressive symptoms increased with increasing severity of objective hearing loss, revealing a dose-response relationship between objective hearing loss and depressive symptoms. These findings suggest that hearing loss could be a modifiable contributor to depressive symptoms in older adults.
Automated sensor planning for robotic vision tasks
Creators: name: Tarabanis, Kostantinos
name: Tsai, Roger Y.
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 1991
Subjects: Robotics

description: A method is presented to determine viewpoints for a robotic vision system for which object features of interest will simultaneously by visible, inside the field-of-view, in-focus, and magnified as required. A technique that poses the problem in an optimization setting in order to determine viewpoints that satisfy all requirements simultaneously and with a margin is presented. The formulation and results of the optimization are shown, as well as experimental results in which a robot vision system is positioned and its lens is set according to this method. Camera views are taken from the computed viewpoints in order to verify that all feature detectability requirements are satisfied.
Superfluidity of Dirac Fermions in a Tunable Honeycomb Lattice: Cooper Pairing, Collective Modes, and Critical Currents
Creators: name: Tsuchiya, Shunji
name: Ganesh, R.
name: Paramekanti, Arun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by recent experiments on atomic Dirac fermions in a tunable honeycomb optical lattice, we study the attractive Hubbard model of superfluidity in the anisotropic honeycomb lattice. At weak-coupling, we find that the maximum mean field pairing transition temperature, as a function of density and interaction strength, occurs for the case with isotropic hopping amplitudes. In this isotropic case, we go beyond mean field theory and study collective fluctuations, treating both pairing and density fluctuations for interaction strengths ranging from weak to strong coupling. We find evidence for a sharp sound mode, together with a well-defined Leggett mode over a wide region of the phase diagram. We also calculate the superfluid order parameter and collective modes in the presence of nonzero superfluid flow. The flow-induced softening of these collective modes leads to dynamical instabilities involving stripe-like density modulations as well as a Leggett-mode instability associated with the natural sublattice symmetry breaking charge-ordered state on the honeycomb lattice. The latter provides a non-trivial test for the experimental realization of the one-band Hubbard model. We delineate regimes of the phase diagram where the critical current is limited by depairing or by such collective instabilities, and discuss experimental implications of our results.
description: 20 pages, 12 figures. v3: published version
ASHVIN Newsletter 7 - Marking the end of the 3rd project year
Creators: name: Cediel, Natalia
Publisher: name: Zenodo
Year: 2023
Subjects: digital twin
construction projects
digital transformation
maintenance of infrastructure assets

description: The ASHVIN project is a research and innovation action funded by the European Union since October 2020. During these last three years, the project has developed a digital twin tool for construction and civil engineering projects, easing the workflow in the design, construction and maintenance phases of these projects. 
This 7th ASHVIN newsletter offers an overview of the achieved key results in the project in terms of technical development and piloting of the created digital twin system and its dissemination towards the target stakeholders, including construction site managers, researchers in the digital transformation of the construction sector, the AEC industry, and digital SMEs.
Virtutes Augusti immortalis
Creators: name: Kreutzer, Caroline
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: 930 Geschichte des Altertums bis ca. 499, Archäologie

description: Caroline Kreutzer [Virtutes Augusti immortalis. Das Augustusforum und der augusteische Tugendkanon] widmet sich der Statuengalerie am Augustusforum. Die einzelnen Persönlichkeiten der römischen Geschichte ehren Inschriften, die hier im Mittelpunkt stehen. Kreutzer macht deutlich, dass die hier Geehrten als Verkörperung bestimmter Tugenden des Augustus ausgewählt wurden, die durch den sog. clupeus virtutis öffentlich als Ideal des Princeps verkündet wurden. Am Ende präsentiert er sich als krönender Abschluss jener langen Folge, der all diese Tugenden in sich vereine und zeigt sich so bereits für die Zukunft als Beispiel der ruhmreichen Vergangenheit.
title: Calculation of kidney volumes with Magnetic Resonance in patients with autosomal dominant polycystic kidney disease: comparison between methods
Creators: name: Campisi, Christian
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Experimental
subject: Prospective
subject: Hyperplasia / Hypertrophy
subject: Cysts
subject: Congenital
subject: Segmentation
subject: Imaging sequences
subject: Computer Applications-Detection, diagnosis
subject: PACS
subject: MR-Diffusion/Perfusion
subject: MR
subject: Urinary Tract / Bladder
subject: Retroperitoneum
subject: Kidney
subject: Genitourinary

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Autosomal dominant polycystic renal disease (ADPKD) is the most frequent kidney disease inheritable [1-3]. The disease is characterized by the presence of numerous bilateral renal cysts, causing a progressive increase in kidney volume and a...
Phase diagram of dilute cosmic matter
Creators: name: Iwata, Yoritaka
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Enhancement of nuclear pasta formation due to multi-nucleus simultaneous collision is presented based on time-dependent density functional calculations with periodic boundary condition. This calculation corresponds to the situation with density lower than the known low-density existence limit of the nuclear pasta phase. In order to evaluate the contribution from three-nucleus simultaneous collisions inside the cosmic matter, the possibility of multi-nucleus simultaneous collisions is examined by a systematic Monte-Carlo calculation, and the mean free path of a nucleus is obtained. Consequently the low-density existence limit of the nuclear pasta phase is formed to be lower than believed up to now.
description: Modification [02/2012] to the mistake in the density representation of Monte-Carlo results; Right panel of Fig. 2, Table 1, and so on. No change is necessary to the conclusion
Augustus und Apollon
Creators: name: Fischer, Jens
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: 930 Geschichte des Altertums bis ca. 499, Archäologie

description: Jens Fischer [Augustus und Apollon. Notizen zu den Hintergründen einer ‚göttlichen‘ Beziehung] untersucht den Ursprung der Beziehung zwischen Princeps und dem Gott. Während Apollon gemeinhin als seine Schutzgottheit gilt, ist bisher wenig erforscht, wann und warum Augustus sich für ihn entschied. Indem Fischer die Beziehung der beiden im Kontext der Verehrung des Apollon in Rom allgemein untersucht, wird deutlich, dass viele Entscheidungen – beispielsweise der Entschluss zum Bau des Apollontempels auf dem Palatin oder die dortige Aufbewahrung der sibyllinischen Bücher – deutlich früher als bisher angenommen zu datieren sind.
Dynamic sensor planning
Creators: name: Abrams, Steven
name: Allen, Peter K.
name: Tarabanis, Konstantinos A.
Publisher: name: Columbia University
Year: 1993
Subjects: Robotics

description: A method of extending the sensor planning abilities of the MVP (machine vision planning) system to plan viewpoints for monitoring a pre-planned robot task is described. The dynamic sensor planning system presented analyzes geometric models of the environment and of the planned motions of the robot, as well as optical models of the vision sensor. Using a combination of swept volumes and a temporal interval search technique, it computes a series of viewpoints, each of which provides a valid viewpoint for a different interval of the task. By mounting a camera on another manipulator, the viewpoints can be executed at appropriate times during the task so that there is always a robust view suitable for monitoring the task. Experimental results monitoring a simulated robot operation are presented, and directions for future research are discussed.
title: Split bolus CT technique for blunt polytrauma : a retrospective study on scan protocols for trauma – our institutional experience of the transition
Creators: name: Azam, Aishah
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Emergency Imaging
subject: Trauma
subject: CT
subject: Health policy and practice
subject: Quality assurance
subject: Retrospective
subject: Not applicable
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Trauma has been described as a global pandemic with a high incidence of associated disability and death 1 . For the evaluation of the severely injured trauma patients, a variety of total body scanning protocols exist. Factors such as image quality,...
Analytic fermionic Green's functions from holography
Creators: name: Gubser, Steven S.
name: Ren, Jie
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We find exact, analytic solutions of the Dirac equation for a charged, massless fermion in the background of a charged, dilatonic black hole in AdS_5. The black hole descends from type IIB supergravity, where it describes D3-branes with equal angular momenta in two of the three independent planes of rotation orthogonal to the world-volume. The Green's function near the Fermi surface for a strongly coupled fermionic system can be extracted holographically from an exact solution of the Dirac equation at zero frequency but nonzero momentum. There can be several Fermi momenta, and they take the form k_F=q-n-1/2 (in units of the chemical potential), where q is the charge of the spinor, and n is a non-negative integer that labels the Fermi surfaces. Much as for holographic Fermi surfaces based on the Reissner-Nordstrom-AdS_5 solution, the dispersion relation of the excitations near the Fermi surface is determined by the geometry close to the horizon, and one can obtain Fermi liquid, marginal Fermi liquid, and non-Fermi liquid behaviors depending on the value of k_F.
description: 10 pages, REVTeX 4.1, 10 figures; v2: typos corrected
title: Role of susceptibility weighted image (SWI) in intraaxial brain neoplasm
Creators: name: Mohamed Abouelhoda, Pasant
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Neuro
subject: Neuroradiology brain
subject: MR
subject: Diagnostic procedure
subject: Neoplasia
subject: Prospective
subject: Cross-sectional study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Is to evaluate the role of Susceptibility weighted imaging in assessment of adults Intra axial brain Neoplasms, and its ability to characterize them into high and low grade lesions in comparison to histopathology, which is used as gold...
title: Evaluation of a deep learning based aortic diameter quantification system against multi-reader consensus measurement
Creators: name: Ali, Asik
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Retrospective
subject: Quality assurance
subject: Technology assessment
subject: Structured reporting
subject: Computer Applications-Detection, diagnosis
subject: CT
subject: Artificial Intelligence
subject: Arteries / Aorta
subject: Anatomy
subject: Artificial Intelligence and Machine Learning
subject: Not applicable

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The aim of this study was to evaluate the accuracy of a deep learning based aortic diameter quantification model on non-contrast Chest CT examinations against a multi-reader ground...
Constraining the nature of the most distant Gamma-Ray Burst host galaxies
Creators: name: Basa, S.
name: Cuby, J. G.
name: Savaglio, S.
name: Boissier, S.
name: Clement, B.
name: Flores, H.
name: Borgne, D. Le
name: Mazure, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Long duration gamma-ray bursts (GRBs) allow us to explore the distant Universe, and are potentially the most effective tracer of the most distant objects. Our current knowledge of the properties of GRB host galaxies at redshifts >5 is very scarce. We propose to improve this situation by obtaining more observations of high-redshift hosts to better understand their properties and help enable us to use GRBs as probes of the high-redshift universe. We performed very deep photometric observations of three high-redshift GRB host galaxies, GRB 080913 at z =6.7, GRB 060927 at z =5.5 and GRB 060522 at z =5.1. In addition, we completed deep spectroscopic observations of the GRB080913 host galaxy with X-Shooter at the VLT to search for Ly-alpha emission. For the sake of the discussion, we use published results on another high-redshift GRB host, GRB 050904 at z = 6.3. The sample of GRB host galaxies studied in this paper consists of four out of the five spectroscopically confirmed GRBs at z>5. Despite our presented observations being the deepest ever reported of high-redshift GRB host galaxies, we do not detect any of the hosts, neither in photometry nor in spectroscopy in the case of GRB 080913. These observations indicate that the GRB host galaxies seem to evolve with time and to have lower SFRs at z >5 than they have at z<1. In addition, the host galaxy of GRB 080913 at z =6.7 does not show Ly-alpha emission. While the measured properties of the galaxies in our sample agree with the properties of the general galaxy population at z>5, our observations are not sufficiently sensitive to allow us to infer further conclusions on whether this specific population is representative of the general one. The characterization of high-redshift GRB host galaxies is a very challenging endeavor requiring a lot of telescope time, but is necessary to improve our understanding of the high-redshift universe.
description: Accepted to A&A
title: Management of kidney-biopsy complications performing renal embolization as a definitive approach with preservation of basal renal function
Creators: name: Avila , Vanessa
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Retrospective
subject: Haemorrhage
subject: Embolisation
subject: Arterial access
subject: Ultrasound
subject: Fluoroscopy
subject: Catheter arteriography
subject: Kidney
subject: Interventional vascular
subject: Interventional Radiology

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To assess renal function and morphologic changes in patients who presented with bleeding after kidney biopsy who were treated with renal embolization as a definitive approach. To demonstrate renal embolization is a safe and reliable technique which...
Scalar perturbations from brane-world inflation with curvature effects
Creators: name: Bouhmadi-Lopez, Mariam
name: Chen, Pisin
name: Liu, Yen-Wei
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a generalization of the Randall-Sundrum single brane-world scenario (RS2). More precisely, the generalization is described through curvature corrections, corresponding to a Gauss-Bonnet term in the bulk and a Hilbert-Einstein term, as well as the strength of the induced gravity term, on the brane. We are mainly interested in analyzing the early inflationary era of the brane, which we model within the extreme slow-roll limit, i.e., under a de Sitter like brane inflation, where the inflaton field is confined on the brane. We compute the scalar perturbations in this model and compare our results with those previously obtained for the RS2 scenario with and without an induced gravity term on the brane or a Gauss-Bonnet term in the bulk. The amplitude of the scalar perturbations is decreased as compared with a pure RS2 model. In addition, the effect from the Gauss-Bonnet correction in an induced gravity brane-world model is to decrease the amplitude of the scalar perturbations, and a similar result is obtained for the induced gravity effect in a Gauss-Bonnet brane-world. In general, in the high energy limit the amplitude is highly suppressed by the Gauss-Bonnet effect. Finally, we constrain the model using the latest WMAP7 data.
description: 13 pages, 8 figures. RevTex4-1. Comments and references added. Version accepted in PRD
Sensor planning in an active robotic work cell
Creators: name: Abrams, Steven
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 1992
Subjects: Robotics
Artificial intelligence

description: In this paper, we discuss techniques for extending the sensor planning capabilities of the machine vision planning system to include motion in a well-known environment. In a typical work cell, vision sensors are needed to monitor a task and provide feedback to motion control programs or to assess task completion or failure. In planning sensor locations and parameters for such a work-cell, all motion in the environment must be taken into account in order to avoid occlusions of desired features by moving objects and, in the case where the features to be monitored are being manipulated by the robot, to insure that the features are always within the camera's view. Several different sensor locations (or a single, movable sensor) may be required in order to view the features of interest during the course of the task. The goal is to minimize the number of sensors (or to minimize the motion of the single sensor) while guaranteeing a robust view at all times during the task, where a robust view is one which is unobstructed, in focus, and sufficiently magnified. In the past, sensor planning techniques have primarily focused on static environments. We present techniques which we have been exploring to include knowledge of motion in the sensor planning problem. Possible directions for future research are also presented.
title: A Silent Combination with Radiological Expression. Human Immunodeficiency Virus-related Pulmonary Arterial Hypertension. Alternative CT Angiographic Measurements and Patterns.
Creators: name: Rivadeneira, Sebastian
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Observational
subject: Prospective
subject: Infection
subject: Hypertension
subject: AIDS
subject: Screening
subject: CT-Angiography
subject: Lung
subject: Cardiovascular system
subject: Arteries / Aorta
subject: Vascular
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Determinate through CT Pulmonary Angiogram(CTPA) the most common patterns and altered measurements obtained in patients with Human Immunodeficiency Virus infection(HIV), who developed as the main comorbidity Pulmonary Arterial Hypertension(PAH)...
Symmetry Theory of the Flexomagnetoelectric Interaction in the Magnetic Vortices and Skyrmions
Creators: name: Tanygin, B. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Symmetry classification of the magnetic vortices and skyrmions has been suggested. Relation between symmetry based predictions and direct calculation has been shown. It was shown, that electric dipole moment of the vortex is located inside the small vortex core. The antivortices and antiskyrmions do not carry the total core electric dipole induced by the flexomagnetoelectric interaction in the hexoctahedral cubic crystal. The volumetric bound electric charge is distributed around the core. Switching of the core electric dipole direction produces the switching of the core magnetization or vortex chirality and vice versa. The vortices and skyrmions with time-invariant enantiomorphism have two degenerative states: clockwise and counterclockwise state.
description: Submitted revised version to the Physica B: Condenced Matter
A Spitzer Space Telescope Study of the Debris Disks around four SDSS White Dwarfs
Creators: name: Brinkworth, Carolyn
name: Gaensicke, Boris
name: Girven, Jon
name: Hoard, Don
name: Marsh, Tom
name: Parsons, Stephen
name: Koester, Detlev
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Spitzer Space Telescope data of four isolated white dwarfs that were previously known to harbor circumstellar gaseous disks. IRAC photometry shows a significant infrared excess in all of the systems, SDSS0738+1835, SDSS0845+2257, SDSS1043+0855 and SDSS1617+1620, indicative of a dusty extension to those disks. The 4.5-micron excesses seen in SDSS0738, SDSS0845, and SDSS1617 are 7.5, 5.7 and 4.5 times the white dwarf contribution, respectively. In contrast, in SDSS1043, the measured flux density at 4.5 microns is only 1.7 times the white dwarf contribution. We compare the measured IR excesses in the systems to models of geometrically thin, optically thick disks, and find that we are able to match the measured SEDs to within 3 sigma of the uncertainties, although disks with unfeasibly hot inner dust temperatures generally provide a better fit than those below the dust sublimation temperature. Possible explanations for the dearth of dust around SDSS1043+0855 are briefly discussed. Including our previous study of SDSS1228+1040, all five white dwarfs with gaseous debris disks have significant amounts of dust around them. It is evident that gas and dust can coexist around these relatively warm, relatively young white dwarfs.
description: 20 pages, including 4 figures. Accepted to ApJ
Problem gambling prevalence in the Oregon criminal justice system: Internal report
Creators: name: Moore, Thomas L.
Publisher: name: Oregon Health Authority
Year: 2018
Subjects: subject: Gambling -- Oregon
subject: Compulsive gambling -- Oregon
subject: Gambling Literature

description: The intention of this project was to provide a baseline estimate of the prevalence of gambling and gambling problems in the DOC prison populations. The study design was a rudimentary survey format from an opportunity sample of individuals being processed at the Coffee Creek Intake Center. Due to time constraints relating to paperwork processing and operational requirements the consensus was to develop a basic survey that would take only a few minutes to complete but would provide data that was comparable to data collected in recent Oregon gambling prevalence studies. The goal was to survey at least 1,000 participants as a simple opportunity sample of individuals being processed at the Coffee Creek Intake Center. Data collection began in December, 2017 and ended in April 2018.
title: Percutaneous pulmonary needle-biopsy: retrospective analysis of a single center and risk-benefit assessment considering lesions characteristics and 18-FDG uptake .
Creators: name: RONCONI, Edoardo
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Interventional Radiology
subject: Interventional non-vascular
subject: CT
subject: Biopsy
subject: Cancer
subject: Retrospective
subject: Observational
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: CT-guided-lung biopsy (CTLB) is a relatively safe and widely accepted procedure for the diagnosis and characterization of several focal lung pathologies, including benign and malignant lesions.[1,8,9] With advances in CT imaging and the growing...
libdft: Practical Dynamic Data Flow Tracking for Commodity Systems
Creators: name: Kemerlis, Vasileios
name: Portokalidis, Georgios
name: Jee, Kangkook
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2012
Subjects: Computer science

description: Dynamic data flow tracking (DFT) deals with tagging and tracking data of interest as they propagate during program execution. DFT has been repeatedly implemented by a variety of tools for numerous purposes, including protection from zero-day and cross-site scripting attacks, detection and prevention of information leaks, and for the analysis of legitimate and malicious software. We present libdft, a dynamic DFT framework that unlike previous work is at once fast, reusable, and works with commodity software and hardware. libdft provides an API for building DFT-enabled tools that work on unmodified binaries, running on common operating systems and hardware, thus facilitating research and rapid prototyping. We explore different approaches for implementing the low-level aspects of instruction-level data tracking, introduce a more efficient and 64-bit capable shadow memory, and identify (and avoid) the common pitfalls responsible for the excessive performance overhead of previous studies. We evaluate libdft using real applications with large codebases like the Apache and MySQL servers, and the Firefox web browser. We also use a series of benchmarks and utilities to compare libdft with similar systems. Our results indicate that it performs at least as fast, if not faster, than previous solutions, and to the best of our knowledge, we are the first to evaluate the performance overhead of a fast dynamic DFT implementation in such depth. Finally, libdft is freely available as open source software.
title: Towards MRI-based Mapping and 3D Visualization of Erectile Nerves
Creators: name: Pyatnitskiy, Ilya
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Genitourinary
subject: Anatomy
subject: Neuroradiology peripheral nerve
subject: MR
subject: MR-Angiography
subject: Intraoperative
subject: Segmentation
subject: Cancer
subject: Prospective
subject: Experimental
subject: Multicentre study

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: In vivo imaging and preoperative precise mapping of erectile nerves such as cavernous (CN) can help to improve their preservation during pelvic surgeries [1] such as prostate cancer surgery and thus help in preserving patient’s erectile function...
Coupled-cluster calculations for the ground- and excited-states of the spin-half XXZ model
Creators: name: Merdan, Mohammad
name: Xian, Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The coupled-cluster method is applied to the spin-1/2 antiferromagnetic XXZ model on a square lattice by employing an approximation which contains two-body long-range correlations and high-order four-body local correlations. Improvement is found for the ground-state energy, sublattice magnetization, and the critical anisotropy when comparing with the approximation including the two-body correlations alone. We also obtain the full excitation spectrum which is in good agreement with the quantum Monte Carlo results and the high-order spin-wave theory.
description: 20 pages, 6 figures
An examination of neighbourhood built and social environment influences on child physical activity patterns
Creators: name: VanLoon, Joshua
Publisher: name: University of British Columbia
Year: 2011

description: Trends in increasing prevalence of childhood overweight and obesity, coupled with evidence that children engage in inadequate physical activity, have prompted considerable interest in the study of correlates of child physical activity. The purpose of this thesis is to investigate potential influences of neighbourhood built and social environment characteristics on child physical activity using data corresponding to two samples of children aged 8-11, attending schools in Vancouver and the surrounding Lower Mainland region of British Columbia. This research benefits from the use of several complementary data sources, including: survey data on parent and child perceptions and travel behaviour; and, objective measures of physical activity and neighbourhood environment characteristics. A variety of analytical methods were used,including Generalized Estimating Equations to account for the clustering of students within schools resulting from a two stage sampling design. Objective measures of built environment characteristics were found to be significantly associated with average daily moderate to vigorous physical activity (MVPA) when controlling for age, gender, ethnicity and household income. These include measures of distance to school, commercial density and intersection density. Measures based on larger spatial units were found to have the strongest associations with MVPA. When modeled as a composite built environment index these characteristics accounted for 5.0% of the variance in MVPA. This index was also significantly negatively associated with sedentary activity. In gender stratified models, different correlates were found for boys and girls, and overall built environment influences on MVPA were found to be stronger for boys than for girls. When controlling for the objective built environment index, neither parent nor child perceptions of safety contributed to explaining MVPA. The generalizability of specific results is limited by the sampling strategy used and also because of unique characteristics of the Lower Mainland region. Nonetheless, many results are consistent with findings of previous studies, providing further support for policies that promote compact, mixed use developments with high street connectivity to support physical activity. Findings also point towards several important research implications, including the need to further study how best to define neighbourhoods for the purpose of assessing environmental characteristics.
Пространственная реконструкция основных элементов нервной системы Nymphon rubrum (Pantopoda)
Creators: name: Алексеева Нина Владимировна
Publisher: name: Biological Communications
Year: 2010
Subjects: НЕРВНАЯ СИСТЕМА
ОЛИГОМЕРИЗАЦИЯ
ARTHROPODA
PANTOPODA
NERVOUS SYSTEM
OLIGOMERIZATION

description: На основе серий гистологических срезов была выполнена пространственная реконструкция основных элементов нервной системы Nymphon rubrum (Pantopoda). Выявлено, что последние два ганглия брюшной нервной цепочки сближены, а соединяющая их комиссура укорочена. Это позволяет предположить, что тенденция к концентрации ганглиев, характерная для морских пауков, у Nymphon rubrum выражена слабо. Библиогр. 8 назв. Ил. 4.
description: Based on series of hystology sections spatial reconstruction of a nervous system in Nymphon rubrum was performed. It was found that two last ganglia of ventral nerve cord are drawn together and the comussure connecting them are shorter. We can conclude that ganglia concentration is not so prominent in these species.
Polar charge and orbital order in 2H-TaS2
Creators: name: van Wezel, Jasper
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It was recently discovered that in spite of the scalar nature of its order parameter, the charge order in 1T-TiSe2 can be chiral. This is made possible by the emergence of orbital order in conjunction with the charge density modulations. Here we show that a closely related charge and orbital ordered state arises in 2H-TaS2. In both materials, the microscopic mechanism driving the transition is based on the interaction between three differently polarized displacement waves. The relative phase shifts between these waves lead both to the formation of orbital order and to the breakdown of inversion symmetry. In contrast to 1T-TiSe2 however, the presence of a mirror plane in the lattice of 2H-TaS2 prevents the distorted structure in this material from being chiral, and a polar charge and orbital ordered state arises instead. It is stressed that bulk experiments are indispensable in differentiating between the chiral and polar phases.
description: Final version; 6 pages, 4 figures
DEP Bulletin:Volume 37 Issue 8
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2013

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Dealing with System Monocultures
Creators: name: Keromytis, Angelos D.
name: Prevelakis, Vassilis
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: Software systems often share common vulnerabilities that allow a single attack to compromise large numbers of machines (write once, exploit everywhere). Borrowing from biology, several researchers have proposed the introduction of artificial diversity in systems as a means for countering this phenomenon. The introduced differences affect the way code is constructed or executed, but retain the functionality of the original system. In this way, systems that exhibit the same functionality have unique characteristics that protect them from common mode attacks. Over the years, several such have been proposed. We examine some of the most significant techniques and draw conclusions on how they can be used to harden systems against attacks.
Midwives’ experiences of utilising personal protective equipment during the COVID-19 pandemic: a qualitative descriptive study
Creators: name: O'Farrell, Angela
name: CHATZI, ANNA
name: DOODY, OWEN
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Health sciences
subject: FOS: Health sciences

description: Background: Coronavirus has placed a lot of strain on the healthcare system. As a result, major changes have occurred in the way healthcare is delivered, including pregnancy care delivery. Within the Irish healthcare system, the response to the COVID-19 pandemic has demanded frequent and ongoing adjustments to mid-wifery practice and the provision of personal protective equipment (PPE) and its usage have come under serious scrutiny during the COVID-19 pandemic. Aim: To explore midwives experiences of utilising PPE during the COVID-19 pandemic. Methods: A qualitative descriptive study utilising a purposive sampling of 10 midwives who participated in in-depth semi-structured interviews, highlighting their experiences of utilising PPE during the COVID-19 pandemic. Data obtained was analysed using the Braun and Clarkes framework and reported in line with the consolidated criteria for qualitative research reporting (COREQ). Results: Analysed data resulted in five themes, eight subthemes and 18 codes. The themes identified represent the participants experiences and highlight the; importance of effective communication, fear and anxiety of contracting and spreading the virus, value of peer support as a coping strategy, impact of lack of resources in the midwifery practice, and education and training effectiveness. Conclusion: The introduced strict mandatory infection prevention and control measures, predominantly the wearing of PPE, took effect with concurrent increased stress and anxiety, while caring for pregnant women
Convergence Rates to Stationary Solutions of a Gas-liquid Model with External Forces and Vacuum
Creators: name: Fan, Long
name: Liu, Qingqing
name: Zhu, Changjiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we study the asymptotic behavior of solutions to a Gas-liquid model with external forces and general pressure law. Under some suitable assumptions on the initial date and $γ>1$, if $θ\in(0,\fracγ{2}]\cap(0,γ-1]\cap(0,1-αγ]$, we prove the weak solution $(cQ(x,t),u(x,t))$ behavior asymptotically to the stationary one by adapting and modifying the technique of weighted estimates. In addition, if $θ\in(0,\fracγ{2}]\cap(0,γ-1)\cap(0,1-αγ]$, following the same idea in \cite{Fang-Zhang4}, we estimate the stabilization rate of the solution as time tends to infinity in the sense of $L^\infty$ norm.
description: 30 Pages
Russian Monasticism and Social Engagement: The Case of the Trinity-Sergius Lavra in the Nineteenth Century
Creators: name: Kenworthy, Scott M.
Publisher: name: Columbia University
Year: 2010
Subjects: Religion
History

description: A common stereotype has it that the Orthodox Church is “otherworldly” and unengaged in this world, particularly as contrasted with the social engagement of Western Christianity. According to this image, the Orthodox Church is (and has historically been) preoccupied with liturgy and ritual, on the one hand, and contemplative prayer and mysticism, on the other, and therefore has not actively sought to ameliorate the conditions of those in need. Although this depiction is not entirely inaccurate, particularly as pertains to the Orthodox Church in recent centuries, it is my argument that this lack of social engagement is not somehow “essential” to the nature of the Orthodox Church, but rather specific to particular historical circumstances.
Using Overlays to Improve Network Security
Creators: name: Keromytis, Angelos D.
name: Misra, Vishal
name: Rubenstein, Daniel Stuart
Publisher: name: Columbia University
Year: 2002
Subjects: Computer science

description: As we increase our dependency upon networked communication, the incentive to compromise and degrade network performance increases for those who wish to disrupt the flow of information. Attacks that lead to such compromise and degradation can come in a variety of forms, including distributed denial of service (DDoS) attacks, cutting wires, jamming transmissions, and monitoring/eavesdropping. Users can protect themselves from monitoring by applying cryptographic techniques, and the recent work has explored developing networks that react to DDoS attacks by locating the source(s) of the attack. However, there has been little work that addresses preventing the other kinds of attacks as opposed to reacting to them. Here, we discuss how network overlays can be used to complicate the job of an attacker that wishes to prevent communication. To amplify our point, we focus briefly on a study of preventing DDoS attacks by using overlays.