cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Second-look after breast MR: a systematic approach.
Creators: name: traficante, fabiana
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Tissue characterisation
subject: Cancer
subject: Biopsy
subject: Ultrasound
subject: MR
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe steps and techniques of second-look US, following the detection of breast MR-only lesions. To identify a suitable ultrasound target for US-guidedcore needlebiopsy and subsequent histological examination. Focus on breast MRimages...
Non-supersymmetric Conifold
Creators: name: Dymarsky, Anatoly
name: Kuperstein, Stanislav
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find a new family of non-supersymmetric numerical solutions of IIB supergravity which are dual to the N=1 cascading "conifold" theory perturbed by certain combinations of relevant single trace and marginal double trace operators with non infinitesimal couplings. The SUSY is broken but the resulting ground states, and their gravity duals, remain stable, at least perturbatively.Despite the complicated field theory dynamics the gravity solutions have a simple structure. They feature the Ricci-flat non-Kahler metric on the deformed conifold and the imaginary self-dual three-form flux accompanied by a constant dilaton.
description: 27 pages, 6 figures; v2: minor corrections; v3: comments added
Testing Booleanity and the Uncertainty Principle
Creators: name: Gur, Tom
name: Tamuz, Omer
Publisher: name: arXiv
Year: 2012
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Let f:{-1,1}^n -> R be a real function on the hypercube, given by its discrete Fourier expansion, or, equivalently, represented as a multilinear polynomial. We say that it is Boolean if its image is in {-1,1}. We show that every function on the hypercube with a sparse Fourier expansion must either be Boolean or far from Boolean. In particular, we show that a multilinear polynomial with at most k terms must either be Boolean, or output values different than -1 or 1 for a fraction of at least 2/(k+2)^2 of its domain. It follows that given oracle access to f, together with the guarantee that its representation as a multilinear polynomial has at most k terms, one can test Booleanity using O(k^2) queries. We show an Ω(k) queries lower bound for this problem. Our proof crucially uses Hirschman's entropic version of Heisenberg's uncertainty principle.
description: 15 pages
title: Breast imaging findings in pediatric patients: what the radiologist needs to know
Creators: name: Zulueta Odriozola, Joseba Mirena
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Sampling
subject: Puncture
subject: Comparative studies
subject: Ultrasound
subject: Paediatric
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The purpose of this educational exhibit is to review, in an orderly, classified and simple manner, the imaging findings associated to pediatric age breast conditions, in order to understand when additional diagnostic procedures are needed to rule...
title: New trial of Microvascularity assessment according to BI-RADS 5th edition.
Creators: name: Kang, Seungmin
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Ethics
subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1) To provide a comprehensive review of the microvascularity of benign and malignant breast tumors 2) To provide many examples of various breast diseases and to think of any association between diagnosis and microvascularity 3) To find out whether...
Lectures on spin representation theory of symmetric groups
Creators: name: Wan, Jinkui
name: Wang, Weiqiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The representation theory of the symmetric groups is intimately related to geometry, algebraic combinatorics, and Lie theory. The spin representation theory of the symmetric groups was originally developed by Schur. In these lecture notes, we present a coherent account of the spin counterparts of several classical constructions such as the Frobenius characteristic map, Schur duality, the coinvariant algebra, Kostka polynomials, and Young's seminormal form.
description: lecture notes for Winter School on Representation Theory, Taipei, December 2010
Local classification of generalized complex structures
Creators: name: Bailey, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D18

description: We give a local classification of generalized complex structures. About a point, a generalized complex structure is equivalent to a product of a symplectic manifold with a holomorphic Poisson manifold. We use a Nash-Moser type argument in the style of Conn's linearization theorem.
description: 29 pages, adapted from Ph.D. thesis; v2 changes: retitled, shortened abstract, corrected typos, changed formatting; v3 changes: equation (2.9) was missing a term, proof of Lemma 6.9 adjusted to accommodate; v4 changes: slight editing, closer to published version
Tatami : taint tracking for application migration
Creators: name: Beckman, Lee Alexander
Publisher: name: University of British Columbia
Year: 2013

description: In this thesis we addressed the question of whether taint tracking could be used to help developers make better, faster decisions when improving existing web applications. This is in the context of migration scenarios, where one must respond to increasing demands on an application by optimizing and generally rearchitecting. We wanted to determine if detailed dynamic dataflow traces from web applications could support automated analyses, the results of which would help one to better understand applications and guide one in optimizing them. To investigate this problem, we identified a set of useful analyses from a search of the literature and from our own experience with web applications. These analyses were developed to run automatically over taint tracking data, producing output which should be immediately useful to non-expert users. Two real applications were chosen for analysis in order to determine two important things. First, that we could write our analyses to automatically identify their targets and produce comprehensible results. Second, that the targets actually existed in real applications. In the end our analyses were successful, in many cases producing clean results which concisely described non-trivial properties of the applications and possible optimizations to them. By focusing on how data moves through a system, we found a natural fit for understanding its workings. The biggest difficulties manifested as a need for further automation, to take complicated analysis results and simplify them. Even with many challenges, we believe that our techniques are valuable for helping developers, and should be more thoroughly studied.
High-resolution X-ray spectroscopy reveals the special nature of Wolf-Rayet star winds
Creators: name: Oskinova, L. M.
name: Gayley, K. G.
name: Hamann, W. -R.
name: Huenemoerder, D. P.
name: Ignace, R.
name: Pollock, A. M. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first high-resolution X-ray spectrum of a putatively single Wolf-Rayet star. 400 ks observations of WR 6 by the XMM-Newton-telescope resulted in a superb quality high-resolution X-ray spectrum. Spectral analysis reveals that the X-rays originate far out in the stellar wind, more than 30 stellar radii from the photosphere, and thus outside the wind acceleration zone where the line-driving instability could create shocks. The X-ray emitting plasma reaches temperatures up to 50\,MK, and is embedded within the un-shocked, "cool" stellar wind as revealed by characteristic spectral signatures. We detect a fluorescent Fe line at approx 6.4 keV. The presence of fluorescence is consistent with a two-component medium, where the cool wind is permeated with the hot X-ray emitting plasma. The wind must have a very porous structure to allow the observed amount of X-rays to escape. We find that neither the line-driving instability nor any alternative binary scenario can explain the data. We suggest a scenario where X-rays are produced when the fast wind rams into slow "sticky clumps" that resist acceleration. Our new data show that the X-rays in single WR-star are generated by some special mechanism different from the one operating in the O-star winds.
description: ApJL, Figure 3 is updated
title: Analysis of microvascular muscle perfusion in the thigh before and after the exercise using intravoxel incoherent motion (IVIM) imaging: three different types of exercise
Creators: name: Shinzaki, Hidetaka
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Haemodynamics / Flow dynamics
subject: Molecular imaging
subject: Imaging sequences
subject: MR-Diffusion/Perfusion
subject: MR
subject: Extremities

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Diffusion weighted imaging (DWI) reflects microvascular perfusion at low b-value and reflects diffusion of water molecules at high b-value, but can not separate microvascular perfusion and diffusion of water molecules [1-2]． Intravoxel incoherent...
title: Quantitative assessment of flow velocity of cerebrospinal fluid using 2D phase-contrast MRI in adolescent idiopathic scoliosis
Creators: name: Takano, Susumu
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Developmental disease
subject: Imaging sequences
subject: Computer Applications-Detection, diagnosis
subject: MR
subject: Neuroradiology spine

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Several studies demonstrated quantitative cerebrospinal fluid (CSF) flow measurement using MRI. Assessment of the CSF flow plays an important role to consider spinal pathologic condition. However, none has been reported regarding the CSF velocity in...
Chandra observations of NGC4342, an optically faint, X-ray gas-rich early-type galaxy
Creators: name: Bogdan, Akos
name: Forman, William R.
name: Kraft, Ralph P.
name: Jones, Christine
name: Blom, Christina
name: Randall, Scott W.
name: Zhang, Zhongli
name: Zhuravleva, Irina
name: Churazov, Eugene
name: Li, Zhiyuan
name: Nulsen, Paul E. J.
name: Vikhlinin, Alexey
name: Schindler, Sabine
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Chandra X-ray observations of NGC4342, a low stellar mass (M_K=-22.79 mag) early-type galaxy, show luminous, diffuse X-ray emission originating from hot gas with temperature of kT~0.6 keV. The observed 0.5-2 keV band luminosity of the diffuse X-ray emission within the D_25 ellipse is L_0.5-2keV = 2.7 x 10^39 erg/s. The hot gas has a significantly broader distribution than the stellar light, and shows strong hydrodynamic disturbances with a sharp surface brightness edge to the northeast and a trailing tail. We identify the edge as a cold front and conclude that the distorted morphology of the hot gas is produced by ram pressure as NGC4342 moves through external gas. From the thermal pressure ratios inside and outside the cold front, we estimate the velocity of NGC4342 and find that it moves supersonically (M~2.6) towards the northeast. Outside the optical extent of the galaxy we detect ~17 bright (L_0.5-8keV > 3 x 10^37 erg/s) excess X-ray point sources. The excess sources are presumably low-mass X-ray binaries (LMXBs) located in metal-poor globular clusters (GCs) in the extended dark matter halo of NGC4342. Based on the number of excess sources and the average frequency of bright LMXBs in GCs, we estimate that NGC4342 may host roughly 850-1700 GCs. In good agreement with this, optical observations hint that NGC4342 may harbor 1200 +/- 500 GCs. This number corresponds to a GC specific frequency of S_N = 19.9 +/- 8.3, which is among the largest values observed in full-size galaxies.
description: 9 pages, 7 figures, accepted for publication in ApJ
title: Differential diagnosis of pathological and insufficiency fractures
Creators: name: Oliveira, Thais
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Metastases
subject: Osteoporosis
subject: Education and training
subject: Diagnostic procedure
subject: Conventional radiography
subject: CT
subject: MR
subject: Bones
subject: Musculoskeletal spine
subject: Neuroradiology spine

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Atraumatic vertebral compression fractures in the thoracic or lumbar spine are a common clinical problem, particularly in elderly patients. It is important the differentiation of compression fractures caused by metastatic malignancy from those...
title: Screening options for women with dense breasts
Creators: name: DiSomma, Nerina
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Screening
subject: Ultrasound
subject: MR
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To identify the challenges dense breast tissue presents. To understand the classificationof breast density. To recognize the main screening options for patients with dense breast...
Limited Urban Growth: London's Street Network Dynamics since the 18th Century
Creators: name: Masucci, A. Paolo
name: Stanilov, Kiril
name: Batty, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We investigate the growth dynamics of Greater London defined by the administrative boundary of the Greater London Authority, based on the evolution of its street network during the last two centuries. This is done by employing a unique dataset, consisting of the planar graph representation of nine time slices of Greater London's road network spanning 224 years, from 1786 to 2010. Within this time-frame, we address the concept of the metropolitan area or city in physical terms, in that urban evolution reveals observable transitions in the distribution of relevant geometrical properties. Given that London has a hard boundary enforced by its long-standing green belt, we show that its street network dynamics can be described as a fractal space-filling phenomena up to a capacitated limit, whence its growth can be predicted with a striking level of accuracy. This observation is confirmed by the analytical calculation of key topological properties of the planar graph, such as the topological growth of the network and its average connectivity. This study thus represents an example of a strong violation of Gibrat's law. In particular, we are able to show analytically how London evolves from a more loop-like structure, typical of planned cities, toward a more tree-like structure, typical of self-organized cities. These observations are relevant to the discourse on sustainable urban planning with respect to the control of urban sprawl in many large cities, which have developed under the conditions of spatial constraints imposed by green belts and hard urban boundaries.
description: PlosOne, in publication
Potential Wheat Demand in China: Applicants for Import Quota
Creators: name: Gale, Fred
name: Gale, Fred
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agricultural Finance
subject: Financial Economics
subject: International Relations/Trade
subject: Political Economy
subject: wheat
subject: China
subject: imports
subject: tariff-rate quota
subject: TRQ
subject: flour industry

description: This report examines lists of applicants for wheat tariff-rate quota (TRQ) for the years 2015 to 2021 to characterize the potential demand for imported wheat in China. More than 900 companies in China applied for quota from 2015 to 2021, and 171 applied 7 years in a row. Although most applicants are private companies in major flour-producing provinces, they account for few wheat imports; customs data indicate that Beijing-based companies—comprising fewer than 2 percent of TRQ applicants each year—are the predominant wheat importers. When China’s wheat imports doubled in 2020, Beijing-based companies accounted for 85 percent of the imports.
Gravitational-wave Science in the High School Classroom
Creators: name: Farr, Benjamin
name: Schelbert, GionMatthias
name: Trouille, Laura
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics Education (physics.ed-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article describes a set of curriculum modifications designed to integrate gravitational-wave science into a high school physics or astronomy curriculum. Gravitational-wave scientists are on the verge of being able to detect extreme cosmic events, like the merger of two black holes, happening hundreds of millions of light years away. Their work has the potential to propel astronomy into a new era by providing an entirely new means of observing astronomical phenomena. Gravitational-wave science encompasses astrophysics, physics, engineering, and quantum optics. As a result, this curriculum exposes students to the interdisciplinary nature of science. It also provides an authentic context for students to learn about astrophysical sources, data analysis techniques, cutting-edge detector technology, and error analysis.
description: Submitted to the American Journal of Physics
title: Unexpected findings of 68Galio PET CT in patients with biochemical recurrence of prostate cancer
Creators: name: Garcia Fontes, Margarita
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Genital / Reproductive system male
subject: Hybrid Imaging
subject: Oncology
subject: PET-CT
subject: CT
subject: Diagnostic procedure
subject: Molecular imaging
subject: Radiobiology
subject: Neoplasia
subject: Multidisciplinary cancer care

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Prostate cancer is the most common non-cutaneous malignancy in men in the Western world. It represents an extremely variable disease with a very different biological behavior from an indolent disease to a very aggressive one and with extensive...
Determining the outcome of cosmic bubble collisions in full General Relativity
Creators: name: Johnson, Matthew C.
name: Peiris, Hiranya V.
name: Lehner, Luis
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Cosmic bubble collisions provide an important possible observational window on the dynamics of eternal inflation. In eternal inflation, our observable universe is contained in one of many bubbles formed from an inflating metastable vacuum. The collision between bubbles can leave a detectable imprint on the cosmic microwave background radiation. Although phenomenological models of the observational signature have been proposed, to make the theory fully predictive one must determine the bubble collision spacetime, and thus the cosmological observables, from a scalar field theory giving rise to eternal inflation. Because of the intrinsically non-linear nature of the bubbles and their collision, this requires a numerical treatment incorporating General Relativity. In this paper, we present results from numerical simulations of bubble collisions in full General Relativity. These simulations allow us to accurately determine the outcome of bubble collisions, and examine their effect on the cosmology inside a bubble universe. We confirm the validity of a number of approximations used in previous analytic work, and identify qualitatively new features of bubble collision spacetimes. Both vacuum bubbles and bubbles containing a realistic inflationary cosmology are studied. We identify the constraints on the scalar field potential that must be satisfied in order to obtain collisions that are consistent with our observed cosmology, yet leave detectable signatures.
description: 37 pages, 26 figures. Accepted to PRD, replaced with minor corrections to match published version
title: Quick Tips! The Role of Doppler-Ultrasound at the Pelvic Congestion Syndrome. How is the best way to perform and comprehend it?
Creators: name: Rivadeneira, Sebastian
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Varices
subject: Pelvic floor dysfunction
subject: Education and training
subject: Screening
subject: Education
subject: Cost-effectiveness
subject: Ultrasound-Power Doppler
subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: Vascular
subject: Pelvis
subject: Genital / Reproductive system female

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To recognize how important and easy is to perform ultrasound plus Doppler-Color in the Pelvic Congestion Syndrome. To show the typical sonographic signs of thePelvic Congestion Syndrome identifying the intra-pelvic venous...
Neutrino masses along with fermion mass hierarchy
Creators: name: Ghosh, Dilip Kumar
name: Hundi, R. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently a new mechanism has been proposed to cure the problem of fermion mass hierarchy in the Standard Model (SM) model. In this scenario, all SM charged fermions other than top quark arise from higher dimensional operators involving the SM Higgs field. This model also predicted some interesting phenomenology of the Higgs boson. We generalize this model to accommodate neutrino masses (Dirac & Majorana) and also obtain the mixing pattern in the leptonic sector. To generate neutrino masses, we add extra three right handed neutrinos $(N_{iR})$ in this model.
description: 20 pages, the content on results and phenomenology have been expanded, a new section on UV completion of the model has been added and also some new references, this version has been accepted by Physical Review D
East is not west : is there validity in cross-cultural usability?
Creators: name: Haddad, Shathel Yacoub
Publisher: name: University of British Columbia
Year: 2013

description: This work reports on the design and evaluation of culturally appropriate technology. We investigated cultural differences related to attitudes toward uncertainty between Western Caucasians (more tolerant) and East Asians (less tolerant). Using theory triangulation of cultural attitudes toward uncertainty, we designed information-minimal and information-rich interfaces and hypothesized they would be culturally appropriate for Caucasians and East Asians respectively. Our design context was Cognitive Testing on a Computer (C-TOC): a home-based computerized test under development, intended to screen older adults for cognitive impairments in the absence of a health professional. Using the two interfaces we designed for one C-TOC subtest, we ran an experiment with 36 participants to investigate the effects of cultural attitudes toward uncertainty on performance, preference and experience of anxiety. We found that East Asians preferred the information-rich interface augmented with security elements and learning support: they found it easier to use and felt less anxious with it. By contrast, Caucasians preferred the simpler information-minimal interface with only elements essential for the primary task. Based on our findings, we provide cultural design guidelines for Western Caucasians and East Asians in interaction contexts characterized by uncertainty, such as cognitive testing. We also provide guidelines for using a short uncertainty avoidance questionnaire as a low-cost method for creating adaptive interfaces that cater to varying cultural attitudes toward uncertainty.
title: Spectrum of clinical and imaging findings in patients with serological diagnosis of H1N1 and its correlation with clinical severity
Creators: name: Guerreiro, Nicolau
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Outcomes
subject: Infection
subject: Acute
subject: Outcomes analysis
subject: CT-High Resolution
subject: CT
subject: Conventional radiography
subject: Thorax
subject: Lung

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Influenza A H1N1 virus is the subtype of influenza virus that typically leads to a moresevere infection than the usual seasonal influenza virus. It was the cause of the last influenzaglobal outbreak in 2009, which resulted in thousands of deaths...
The stochastic background from cosmic (super)strings: popcorn and (Gaussian) continuous regimes
Creators: name: Regimbau, Tania
name: Giampanis, Stefanos
name: Siemens, Xavier
name: Mandic, Vuk
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the era of the next generation of gravitational wave experiments a stochastic background from cusps of cosmic (super)strings is expected to be probed and, if not detected, to be significantly constrained. A popcorn-like background can be, for part of the parameter space, as pronounced as the (Gaussian) continuous contribution from unresolved sources that overlap in frequency and time. We study both contributions from unresolved cosmic string cusps over a range of frequencies relevant to ground based interferometers, such as LIGO/Virgo second generation (AdLV) and Einstein Telescope (ET) third generation detectors, the space antenna LISA and Pulsar Timing Arrays (PTA). We compute the sensitivity (at $2 σ$ level) in the parameter space for AdLV, ET, LISA and PTA. We conclude that the popcorn regime is complementary to the continuous background. Its detection could therefore enhance confidence in a stochastic background detection and possibly help determine fundamental string parameters such as the string tension and the reconnection probability.
description: 21 pages, 11 figures ; revised version after correction of a typo in eq. 4.1
title: Assessing malignancy risk in thyroid nodules using a practical ultrasound predictor model "alpha score"
Creators: name: Mena, Glenn
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Thyroid / Parathyroids
subject: Interventional non-vascular
subject: Head and neck
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Percutaneous
subject: Puncture
subject: Biopsy
subject: Efficacy studies
subject: Endocrine disorders
subject: Pathology
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The aim of this study was to develop a simple predictor model to diagnose malignancy by using ultrasound features of thyroid nodules and the association with cytopathological diagnosis obtained by fine needle...
Memory Attacks on Device-Independent Quantum Cryptography
Creators: name: Barrett, Jonathan
name: Colbeck, Roger
name: Kent, Adrian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Device-independent quantum cryptographic schemes aim to guarantee security to users based only on the output statistics of any components used, and without the need to verify their internal functionality. Since this would protect users against untrustworthy or incompetent manufacturers, sabotage or device degradation, this idea has excited much interest, and many device-independent schemes have been proposed. Here we identify a critical weakness of device-independent protocols that rely on public communication between secure laboratories. Untrusted devices may record their inputs and outputs and reveal information about them via publicly discussed outputs during later runs. Reusing devices thus compromises the security of a protocol and risks leaking secret data. Possible defences include securely destroying or isolating used devices. However, these are costly and often impractical. We propose other more practical partial defences as well as a new protocol structure for device-independent quantum key distribution that aims to achieve composable security in the case of two parties using a small number of devices to repeatedly share keys with each another (and no other party).
description: 6+4 pages. Title updated to match published version. Expanded discussion of countermeasures. We wish to underline (in particular, for the benefit of any readers unfamiliar with the field) that our attacks apply to quantum cryptography in the scenario where the quantum devices used are completely untrusted, and not in the usual scenario in which the device manufacturers are trusted
FG-MPI : Fine-Grain MPI
Creators: name: Kamal, Humaira
Publisher: name: University of British Columbia
Year: 2013

description: The Message Passing Interface (MPI) is widely used to write sophisticated parallel applications ranging from cognitive computing to weather predictions and is almost universally adopted for High Performance Computing (HPC). Many popular MPI implementations bind MPI processes to OS-processes. This runtime model has closely matched single or multi-processor compute clusters. Since 2008, however, clusters of multicore nodes have been the predominant architecture for HPC, with the opportunity for parallelism inside one compute node. There are a number of popular parallel programming languages for multicore that use message passing. One notable difference between MPI and these languages is the granularity of the MPI processes. Processes written using MPI tend to be coarse-grained and designed to match the number of processes to the available hardware, rather than the program structure. Binding MPI processes to OS-processes fails to take full advantage of the finer-grain parallelism available on today's multicore systems. Our goal was to take advantage of the type of runtime systems used by fine-grain languages and integrate that into MPI to obtain the best of these programming models; the ability to have fine-grain parallelism, while maintaining MPI's rich support for communication inside clusters. Fine-Grain MPI (FG-MPI) is a system that extends the execution model of MPI to include interleaved concurrency through integration into the MPI middleware. FG-MPI is integrated into the MPICH2 middleware, which is an open source, production-quality implementation of MPI. The FG-MPI runtime uses coroutines to implement light-weight MPI processes that are non-preemptively scheduled by its MPI-aware scheduler. The use of coroutines enables fast context-switching time and low communication and synchronization overhead. FG-MPI enables expression of finer-grain function-level parallelism, which allows for flexible process mapping, scalability, and can lead to better program performance. We have demonstrated FG-MPI's ability to scale to over a 100 million MPI processes on a large cluster of 6,480 cores. This is the first time any system has executed such a large number of MPI processes, and this capability will be useful in exploring scalability issues of the MPI middleware as systems move towards compute clusters with millions of processor cores.
A Note on Supersymmetric Type II Solutions of Lifshitz Type
Creators: name: Petrini, M.
name: Zaffaroni, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a class of supersymmetric type II non-relativistic solutions with exact or asymptotic scale invariance. As already emerged from previous investigations, we find a clear correspondence between anisotropic d-dimensional vacua and relativistic solutions in (d + 1)-dimensions. We will show that supersymmetric four-dimensional Poincare' invariant backgrounds in type IIB can descend to analogous solutions with anisotropic scaling in t and (x, y). This result can be applied to scale invariant theories, domain walls interpolating between four-dimensional Lifshitz vacua and more general solutions with only asymptotic or approximate scaling behaviour.
description: Added subsection on hyperscaling violation examples
title: The future of radiology in the radiologist's view: Who will move my cheese?
Creators: name: Araujo, Pedro
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: MR
subject: CT-High Resolution
subject: CT
subject: Professional issues
subject: Education
subject: Education and training

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The emergence of artificial intelligence has brought many hypotheses/controversies among radiologists. Our proposal is to evaluate succinctly what radiologists think about the arrival of artificial intelligence into their daily...
Quantum Optomechanics beyond Linearization
Creators: name: He, Bing
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum dynamics of optomechanical systems was mostly studied for their fluctuations around classical steady states. We present a theoretical approach to determining the system observables of optomechanical systems as genuine quantum objects, for example, a coupled quantum mechanical oscillator to a cavity single photon. In this approach we study the dynamics of such systems in strong coupling regime. We find that, under strong optomechanical coupling, steady quantum states of optomechanical systems driven by continuous-wave single photons exhibit periodic oscillation and cavity noise considerably affects system observables.
description: 11 pages, 7 figures; the version to be published
title: Brain MRI and neuropsychiatric particularities in children with tuberous sclerosis complex associated with autism spectrum disorder
Creators: name: Luhovschi, Cristian - Mihai
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Structured reporting
subject: MR-Diffusion/Perfusion
subject: MR
subject: Paediatric
subject: Neuroradiology brain
subject: CNS
subject: Genetic defects

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Background Tuberous Sclerosis Complex (TSC) is a disease with autosomal dominant inheritance that affects multiple organ systems. It is the most common neurocutaneus disease, with an incidence of 1/6000 – 1/10000 of live births. (See Table 1 for...
The Impact of Public Information on Commodity Market Performance: The Response of Corn Futures to USDA Corn Production Forecasts
Creators: name: Arnade, Carlos
name: Hoffman, Linwood
name: Effland, Anne
name: Arnade, Carlos
name: Hoffman, Linwood
name: Effland, Anne
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Financial Economics
subject: Institutional and Behavioral Economics
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research Methods/ Statistical Methods
subject: Risk and Uncertainty
subject: future prices
subject: corn
subject: corn output
subject: corn futures
subject: crop projections
subject: uncertainty
subject: USDA
subject: World Agricultural Supply and Demand Estimates
subject: WASDE
subject: U.S. Department of Agriculture
subject: Economic Research Service
subject: ERS
subject: futures contracts
subject: market impact

description: This paper examines the impact of the U.S. Department of Agriculture’s (USDA) projections of annual corn output on the price of corn futures. We tested if output projections significantly drive responses to the futures market. We also tested if the accuracy of past projections influences market response to the current projections. For each month—from May (planting month) to October (harvesting month)—we estimated a system of equations representing the daily opening, closing, high-, and low-futures prices. These equations test the forecast’s impacts on both price levels and daily variances. We found USDA’s projection of annual corn production influenced future prices and daily variances. The projection moved the future price closer to the October harvest price, and its impact lingered for several days. We found errors in past output projections have only a small effect on the projection impacts on future prices.
title: Θερμοδυναμική μοντελοποίηση κλειστού κύκλου Brayton επανασυμπίεσης με υπερκρίσιμο διοξείδιο του άνθρακα
title: Thermodynamic modelling of closed cycle Brayton recompression with supercritical carbon dioxide
titleType: AlternativeTitle
Creators: name: Κοσμέτος, Ευάγγελος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Υπερκρίσιμο CO2
REFPROP
Επανασυμπίεση
Παραμετρική μελέτη
Κύκλος Brayton

description: Η παρούσα διπλωματική εργασία πραγματεύεται την μελέτη ενός προηγμένου συστήματος παραγωγής ισχύος το οποίο τα τελευταία χρόνια, συνεχώς αναπτύσσεται προσφέροντας πολλές δυνατότητες. Ένας τέτοιος κύκλος είναι ο κλειστός κύκλος Brayton στον οποίο χρησιμοποιείται ως εργαζόμενο μέσο το υπερκρίσιμο διοξείδιο του άνθρακα επιδιώκοντας υψηλές αποδόσεις και δίνοντας έμφαση στην αποδοτικότερη διάταξη του, την επανασυμπίεση. Αφού ,πρώτα, μελετήθηκε το απαραίτητο θεωρητικό υπόβαθρο που απαιτείται για τον κύκλο ισχύος s-CΟ2 εξετάστηκε η διάταξη της επανασυμπίεσης για να γίνουν σαφές τα μέρη από τα οποία απαρτίζεται, η κατανόηση λειτουργίας των διεργασιών του, αλλά και τα μοναδικά χαρακτηριστικά που διαθέτει, καθώς θεωρείται ως η πιο εξελίσσιμη και υποσχόμενη διαμόρφωση του κύκλου ισχύος s-CΟ2. Έτσι, σχεδιάστηκε ο κύκλος επανασυμπίεσης στο ελεύθερο σε πρόσβαση πρόγραμμα προσομοίωσης COCO πραγματοποιώντας θερμοδυναμική μοντελοποίηση μέσω του Microsoft Excel με σκοπό την πραγμάτωση μελέτης που έγινε για εφαρμογές ανάκτησης απορριπτόμενης θερμότητας που αφορούσαν το εύρος θεοκρασιών (31,85 − 555 ℃) με σκοπό την εύρεση σημαντικών θερμοδυναμικών μεγεθών και παραμέτρων του κύκλου ισχύος, αξιόπωντας το δωρεάν πρόγραμμα REFPROP για την παροχή βασικών θερμοδυναμικών ιδιοτήτων και μεταφοράς του υπερκρίσιμου διοξείδιού του άνθρακα. Τα εξαγόμενα αποτελέσματα συγκρίθηκαν με μελέτες ερευνητικών ινστιτούτων που είχαν πραγματοποιηθεί για τον κύκλο επανασυμπίεσης, με στόχο την αξιολόγηση των αποτελεσμάτων και την εκτίμηση της απόδοσης του συστήματος. Μετέπειτα, παρουσιάστηκαν διάφορα διαγράμματα τα οποία προέκυψαν από την παραμετρική μελέτη που επιχειρήθηκε για δύο βασικούς παραμέτρους του κύκλου επανασυμπίεσης, τον λόγο πίεσης και τον λόγο μάζας επανασυμπίεσης. Με την βοήθεια των διαγραμμάτων, γίνεται αντιληπτό πως επιδρούν τα θερμικά φορτία των εξαρτημάτων του κύκλου συναρτήσει του λόγου πίεσης και του λόγου μάζας επανασυμπίεσης, και τελικά η θερμική απόδοση του συστήματος, εφόσον φυσικά αναλυθούν λεπτομερώς. Εν κατακλείδι, συγκρίθηκαν τα αποτελέσματα των δύο ξεχωριστών παραμετρικών μελετών και ελήφθη ο βέλτιστος βαθμός απόδοσης.
title: Ob Impfpflicht oder Klimaschutz: Ohne gesetzliche Vorgaben wird es nicht gehen – zum Wohle aller: Kommentar
Creators: name: Graeber, Daniel
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2021

description: DIW Wochenbericht, 88 (2021), 51/52 S. 836
Using Conceptual Spaces for Artificial Intelligence
Creators: name: Bechberger, Lucas
Publisher: name: Universität Osnabrück
Year: 2023
Subjects: subject: Conceptual Spaces
subject: Machine Learning
subject: Multidimensional Scaling
subject: Cognitive AI
subject: Symbol Grounding
subject: 004 - Informatik
subject: 54.72 - Künstliche Intelligenz
subject: 54.74 - Maschinelles Sehen
subject: I.2.4 - Knowledge Representation Formalisms and Methods
subject: I.2.10 - Vision and Scene Understanding
subject: I.2.6 - Learning

description: This dissertation makes the cognitive framework of conceptual spaces (mainly developed by Peter Gärdenfors) usable for practical applications in cognitive AI by providing a thorough mathematical formalization of the framework along with an open source implementation, by proposing and evaluating a novel hybrid approach for connecting raw sensory information to the conceptual layer of representation, and by discussing various learning mechanisms for identifying conceptual regions. It provides a tight integration of various topics such as cognitive AI, neural-symbolic integration, deep representation learning, multidimensional scaling on psychological dissimilarity ratings, and commonsense reasoning.
Carleson measures for Besov-Sobolev spaces with applications in the unit ball of $C^n$
Creators: name: Peng, Ru
name: Ouyang, Caiheng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 32A37, Secondary 47B38

description: This paper is devoted to give the connections between Carleson measures for Besov-Sobolev spaces $B_p^σ(B)$ and $p$-Carleson measure in the unit ball of ${\bf C}^n$. As applications, we characterize the Riemann-Stieltjes operators and multipliers acting on $B_p^σ(B)$ spaces by means of Carleson measures for $B_p^σ(B)$.
title: Retrieval of iatrogenic intravascular foreign bodies.
Creators: name: Koizumi, Jun
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Removal
subject: CT
subject: Vascular
subject: Interventional vascular
subject: Foreign bodies

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To learn what devices are being lost, what symptoms occur as a result, which imaging is appropriate to detect them, and how retrieval is being...
The efficacy of schema therapy for personality disorders: a systematic review and meta-analysis
Creators: name: Zhang, Kaiyuan
name: Hu, Xinyang
name: Ma, Lijun
name: Xie, Qihang
name: Wang, Zhipeng
name: Fan, Chuan
name: Li, Xiaoming
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biological Sciences not elsewhere classified
Science Policy

description: Personality disorders (PDs) are prevalent and associated with functional impairment and psychological disability. Studies suggest that schema therapy (ST) may be an effective treatment for PDs. This review aimed to evaluate the efficacy of ST in treating PDs. We conducted a comprehensive literature search using PubMed, Embase, Web of Science, CENTRAL, PsycInfo, and Ovid Medline. We identified eight randomized controlled trials (587 participants) and seven single-group trials (163 participants). Meta-analyses revealed that ST had a moderate effect size (g = 0.359) compared to control conditions in reducing symptoms of PDs. Subgroup analysis indicated that the effect of ST on different types of PDs varied slightly, and that group ST (g = 0.859) was more effective than individual ST (g = 0.163) in treating PDs. Secondary outcome analysis revealed a moderate effect size (g = 0.256) for ST compared to control conditions in improving quality of life, and ST was found to reduce early maladaptive schema (g = 0.590). Single-group trials analysis showed that ST had a positive effect on PDs (OR = 0.241). ST appears to be an effective treatment for PDs, as it reduces symptoms and improves quality of life. This review provides support for the use of ST in the treatment of PDs.
Mg substitution in CuCrO2 delafossite compounds
Creators: name: Guilmeau, Emmanuel
name: Poienar, Maria
name: Kremer, Stefan
name: Marinel, Sylvain
name: Hébert, Sylvie
name: Frésard, Raymond
name: Maignan, Antoine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A detailed investigation of the series CuCr(1-x)MgxO2 (x = 0.0 - 0.05) has been performed by making high-temperature resistivity and thermopower measurements, and by performing a theoretical analysis of the latter. Microstructure characterization has been carried out as well. Upon Mg2+ for Cr3+ substitution, a concomitant decrease in the electrical resistivity and thermopower values is found, up to x ~ 0.02 - 0.03, indicating a low solubility limit of Mg in the structure. This result is corroborated by scanning electron microscopy observations, showing the presence of MgCr2O4 spinels as soon as x = 0.005. The thermopower is discussed in the temperature-independent correlation functions ratio approximation as based on the Kubo formalism, and the dependence of the effective charge carrier density on the nominal Mg substitution rate is addressed. This leads to a solubility limit of 1.1% Mg in the delafossite, confirmed by energy dispersive X-ray spectroscopy analysis.
description: 6 pages, 5 figures
Partially Ordinal Sums and $P$-partitions
Creators: name: Du, Daniel K.
name: Hou, Qing-Hu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: G.2.1
subject: 05A15, 05A17, 06A06, 11P81

description: We present a method of computing the generating function $f_P(\x)$ of $P$-partitions of a poset $P$. The idea is to introduce two kinds of transformations on posets and compute $f_P(\x)$ by recursively applying these transformations. As an application, we consider the partially ordinal sum $P_n$ of $n$ copies of a given poset, which generalizes both the direct sum and the ordinal sum. We show that the sequence $\{f_{P_n}(\x)\}_{n\ge 1}$ satisfies a finite system of recurrence relations with respect to $n$. We illustrate the method by several examples, including a kind of 3-rowed posets and the multi-cube posets.
description: 15 pages, 11 figures
Spectral function of the supersymmetry current
Creators: name: Gauntlett, Jerome
name: Sonner, Julian
name: Waldram, Daniel
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue our study of the retarded Green's function of the universal fermionic supersymmetry current ("supercurrent") for the most general class of d=3 N=2 SCFTs with D=10 or D=11 supergravity duals by studying the propagation of the Dirac gravitino in the electrically charged AdS-Reissner-Nordström black-brane background of N=2 minimal gauged supergravity in D=4. We expand upon results presented in a companion paper, including the absence of a Fermi surface and the appearance of a soft power-law gap at zero temperature. We also present the analytic solution of the gravitino equation in the AdS_2 X R^2 background which arises as the near-horizon limit at zero temperature. In addition we determine the quasinormal mode spectrum.
description: 65 pages, 6 Figs; version published in journal