cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-adiabatic dynamics of two strongly coupled nanomechanical resonator modes
Creators: name: Faust, Thomas
name: Rieger, Johannes
name: Seitner, Maximilian J.
name: Krenn, Peter
name: Kotthaus, Jörg P.
name: Weig, Eva M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Landau-Zener transition is a fundamental concept for dynamical quantum systems and has been studied in numerous fields of physics. Here we present a classical mechanical model system exhibiting analogous behaviour using two inversely tuneable, strongly coupled modes of the same nanomechanical beam resonator. In the adiabatic limit, the anticrossing between the two modes is observed and the coupling strength extracted. Sweeping an initialized mode across the coupling region allows mapping of the progression from diabatic to adiabatic transitions as a function of the sweep rate.
Energy loss in a strongly coupled anisotropic plasma
Creators: name: Fadafan, Kazem Bitaghsir
name: Soltanpanahi, Hesam
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the energy loss of a rotating infinitely massive quark moving, at constant velocity, through an anisotropic strongly-coupled N=4 plasma from holography. It is shown that, similar to the isotropic plasma, the energy loss of the rotating quark is due to either the drag force or radiation with a continuous crossover from drag-dominated regime to the radiation dominated regime. We find that the anisotropy has a significant effect on the energy loss of the heavy quark, specially in the crossover regime. We argue that the energy loss due to radiation in anisotropic media is less than the isotropic case. Interestingly this is similar to analogous calculations for the energy loss in weakly coupled anisotropic plasma.
description: 26+1 pages, 10 figures, typos fixed
title: A solid pancreatic mass: tumor or inflammation? how to solve a diagnostic dilemma
Creators: name: Di Serafino, Marco
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Neoplasia
subject: Inflammation
subject: Cancer
subject: Colonography MR
subject: MR-Cholangiography
subject: MR
subject: Pancreas
subject: Oncology
subject: Oncologic Imaging

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To learn a step-by-step approach for the differential diagnosis between pancreatic adenocarcinoma and inflammatory pancreatic pseudo-masses. To suggest some key diagnostic Magnetic Resonance Imaging (MRI) features help in differentiating these...
title: Splenosis: A dont touch lesion.
Creators: name: wadhwani, chandni
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Trauma
subject: Haematologic diseases
subject: Biopsy
subject: CT
subject: Abdomen
subject: Abdominal Viscera

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To study imaging features of incidentally found lesions (splenosis) in the abdomen , pelvis and chest in subjects with previous history of splenectomy- post traumatic/elective. To study the sites at which splenosis can be seen. Usual management of...
title: Emergency CT scan in cases of sudden vision loss
Creators: name: Gajić, Branislav
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Retrospective
subject: Ischaemia / Infarction
subject: Acute
subject: Efficacy studies
subject: Comparative studies
subject: CT
subject: Emergency
subject: CNS
subject: Emergency Imaging
subject: Diagnostic or prognostic study
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: This post aims to help understand sudden vision loss as emergency state, etiology of this condition and especially cortical blindness as a type of vision loss. Also, one of the main goals is to show role of computed tomography in cases of sudden...
title: Sclerosing encapsulating peritonitis: a radiological diagnosis with surgical significance.
Creators: name: wadhwani, chandni
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Pathology
subject: Obstruction / Occlusion
subject: Infection
subject: Surgery
subject: Contrast agent-oral
subject: Contrast agent-intravenous
subject: CT-Enterography
subject: CT
subject: Small bowel
subject: Peritoneum
subject: Abdomen
subject: GI Tract

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To familiarize with the multimodality imaging features of a rare entity- sclerosing encapsulating peritonitis(SEP). To discuss the complications and management options available with timely diagnosis of...
title: Vascular disorders in children with Neurofibromatosis Type 1: MRA Findings
Creators: name: Anastasiou, Athanasia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Retrospective
subject: Ischaemia / Infarction
subject: Aneurysms
subject: Contrast agent-intravenous
subject: MR-Angiography
subject: Paediatric
subject: CNS
subject: Arteries / Aorta
subject: Vascular
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Vasculopathies are a well-recognized manifestation of Neurofibromatosis Type 1 (NF1). The aim of our study is to present Magnetic Resonance Angiography (MRA) features that contribute to the diagnosis of vascular abnormalities in children with...
Introduction to the Special Issue on Music Information Retrieval
Creators: name: Slaney, Malcolm
name: Ellis, Daniel P. W.
name: Sandler, Mark
name: Goto, Masataka
name: Goodwin, Michael M.
Publisher: name: Columbia University
Year: 2008
Subjects: Electrical engineering
Music

description: The 19 papers in this special issue were selected to represent the range of current problems in music information retrieval (MIR).
Infinite-randomness criticality in a randomly layered Heisenberg magnet
Creators: name: Hrahsheh, Fawaz
name: Barghathi, Hatem
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the ferromagnetic phase transition in a randomly layered Heisenberg magnet using large-scale Monte-Carlo simulations. Our results provide numerical evidence for the infinite-randomness scenario recently predicted within a {strong-disorder renormalization group approach}. Specifically, we investigate the finite-size scaling behavior of the magnetic susceptibility which is characterized by a non-universal power-law divergence in the Griffiths phase. We also study the perpendicular and parallel spin-wave stiffnesses in the Griffiths phase. In agreement with the theoretical predictions, the parallel stiffness is nonzero for all temperatures $T
description: 8 pages, 8 figures, final version as published
title: Portal venous system thrombosis: spectrum of imaging findings.
Creators: name: Ercolani, Eleonora
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Ischaemia / Infarction
subject: Embolism / Thrombosis
subject: Education
subject: Ultrasound
subject: MR
subject: CT
subject: Veins / Vena cava
subject: Vascular
subject: Abdomen
subject: Abdominal Viscera

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To illustrate US, CT and MR imaging findings in portal venous system thrombosis in order to perform a proper differential diagnosis in the routine clinical practice and establish the most appropriate therapeutic approach and...
Bin Laden's Death and the War on Terrorism
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: Almost ten years after the terrorist attacks of September 11th, 2001, Osama Bin Laden, the man most identified with planning and executing those attacks was killed by U.S. forces and buried at sea. The news of Bin Laden's death was greeted in the U.S. by celebrations and a burst of patriotic feeling by many.
Circle-preserving transformations in Finsler spaces
Creators: name: Bidabad, Behroz
name: Shen, Zhongmin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C60, 58B20

description: Here, by extending the definition of circle to Finsler geometry, we show that, every circle-preserving local diffeomorphism is conformal. This result implies that in Finsler geometry, the definition of concircular change of metrics, a priori, does not require the conformal assumption.
description: To be published in Publicationes Mathematicae Debrecen, 2012
Uncertainty and the New Middle East
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: The first few months of 2011 have been a good reminder of the role of uncertainty in international politics and foreign policy. The overthrow of President Hosni Mubarak in Egypt, possible ouster of Moammar Gaddafi in Libya as well as widespread demonstrations in Bahrain, Tunisia, where this all started, Morocco and elsewhere in the Middle East will likely be among the biggest issues and challenges facing American policy makers for quite a while, and will almost certainly dominate foreign policy questions for the duration of Barack Obama's time as president.
title: Ependymomas in pediatric patients: Spectrum of Imaging findings
Creators: name: Anastasiou, Athanasia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Oncologic Imaging
subject: CNS
subject: Neuroradiology brain
subject: Paediatric
subject: MR
subject: Chemotherapy
subject: Radiation therapy / Oncology
subject: Surgery
subject: Neoplasia
subject: Retrospective
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The purpose of this study is: To illustrate the imaging characteristics and the possible locations of ependymomas. To explain the utility of MRI in the diagnosis and follow up of these...
title: Evaluation of bone lesions by digital chest tomosynthesis in patients with lung cancer
Creators: name: Rotaru, Natalia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Chest
subject: Bones
subject: Musculoskeletal bone
subject: Oncology
subject: CT
subject: Digital radiography
subject: Diagnostic procedure
subject: Imaging sequences
subject: Cancer
subject: Metastases
subject: Neoplasia
subject: Prospective
subject: Diagnostic or prognostic study
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To assess the role of Digital Chest Tomosynthesis in the diagnosis and follow-up evaluation of bone lesions in patients with lung...
The Ransomware Epidemic - Recent Cybersecurity Incidents Demystified
Creators: name: Temara, Sheetal
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460402
subject: Data and information privacy
classificationCode: 460403
subject: Data security and protection
classificationCode: 460406
subject: Software and application security
classificationCode: 460407
subject: System and network security
classificationCode: 460499
subject: Cybersecurity and privacy not elsewhere classified
classificationCode: 460404
subject: Digital forensics
classificationCode: 460401
subject: Cryptography
classificationCode: 460904
subject: Information security management
classificationCode: 469999
subject: Other information and computing sciences not elsewhere classified
classificationCode: 460603
subject: Cyberphysical systems and internet of things
classificationCode: 460806
subject: Human-computer interaction
classificationCode: 460805
subject: Fairness, accountability, transparency, trust and ethics of computer systems

description: This article delves into the pervasive threat of ransomware emphasizing its significant risk to businesses. Through a comprehensive literature review, it analyzes recent attacks exploring key aspects like targeted organizations, attack vectors, and emerging tactics, such as double extortion. High-profile incidents, including SickKids Hospital and Royal Mail, are scrutinized for insights. The study evaluates existing defenses and proposes practical strategies for organizations. Findings underscore the critical need for evolving cybersecurity measures to protect stakeholders and highlighting the importance of proactive defenses, the article provides valuable insights into mitigating the evolving complexities of the ransomware landscape.
Modeling solar cells with recombination
Creators: name: Guram, Prabhjot Kaur
Publisher: name: University of British Columbia
Year: 2012

description: An elementary model for the analysis of a photovoltaic solar cell is proposed. This analysis is rooted in the current-voltage device characteristics associated with a p-n junction in conjunction with a model for a solar flux controlled current source; this follows the approach of Prince [M. B. Prince, Journal of Applied Physics, vol. 26, pp. 553-540, 1955], the p-n junction architecture being that underlying the photovoltaic solar cell. Recombination processes were modeled through two means: (1) an empirical expression for the current-voltage device characteristics with an associated ideality factor, whose value determines the importance of recombination processes, and (2) a more advanced expression that includes a recombination current. It is shown that the simplified empirical expression is overly simplified and that its use leads to artifacts, i.e., the suggestion that recombination processes could actually enhance the fill-factor. In contrast, the more realistic current voltage device characteristic, which includes both ideal and recombination related current densities, suggests that recombination processes actually will reduce the fill-factor. This later observation is in accord with the experimental observation.
Synthesis and Optimization of Pipelined Packet Processors
Creators: name: Soviani, Cristian
name: Hadzic, Ilija
name: Edwards, Stephen A.
Publisher: name: Columbia University
Year: 2009
Subjects: Computer science

description: We consider pipelined architectures of packet processors consisting of a sequence of simple packet-processing modules interconnected by first-in first-out buffers. We propose a new model for describing their function, an automated synthesis technique that generates efficient hardware for them, and an algorithm for computing minimum buffer sizes that allow such pipelines to achieve their maximum throughput. Our functional model provides a level of abstraction familiar to a network protocol designer; in particular, it does not require knowledge of register-transfer-level hardware design. Our synthesis tool implements the specified function in a sequential circuit that processes packet data a word at a time. Finally, our analysis technique computes the maximum throughput possible from the modules and then determines the smallest buffers that can achieve it. Experimental results conducted on industrial-strength examples suggest that our techniques are practical. Our synthesis algorithm can generate circuits that achieve 40 Gb/s on field-programmable gate arrays, equal to state-of-the-art manual implementations, and our buffer-sizing algorithm has a practically short runtime. Together, our techniques make it easier to quickly develop and deploy high-speed network switches.
Theoretical Aspects of the Equivalence Principle
Creators: name: Damour, Thibault
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review several theoretical aspects of the Equivalence Principle (EP). We emphasize the unsatisfactory fact that the EP maintains the absolute character of the coupling constants of physics while General Relativity, and its generalizations (Kaluza-Klein,..., String Theory), suggest that all absolute structures should be replaced by dynamical entities. We discuss the EP-violation phenomenology of dilaton-like models, which is likely to be dominated by the linear superposition of two effects: a signal proportional to the nuclear Coulomb energy, related to the variation of the fine-structure constant, and a signal proportional to the surface nuclear binding energy, related to the variation of the light quark masses. We recall the various theoretical arguments (including a recently proposed anthropic argument) suggesting that the EP be violated at a small, but not unmeasurably small level. This motivates the need for improved tests of the EP. These tests are probing new territories in physics that are related to deep, and mysterious, issues in fundamental physics.
description: 21 pages, no figures; submitted to a "focus issue" of Classical and Quantum Gravity on Tests of the Weak Equivalence Principle, organized by Clive Speake and Clifford Will
A four-year XMM-Newton/Chandra monitoring campaign of the Galactic Centre: analysing the X-ray transients
Creators: name: Degenaar, N.
name: Wijnands, R.
name: Cackett, E. M.
name: Homan, J.
name: Zand, J. J. M. in 't
name: Kuulkers, E.
name: Maccarone, T. J.
name: van der Klis, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the results of a four-year long X-ray monitoring campaign of the central 1.2 square degrees of our Galaxy, performed with Chandra and XMM-Newton between 2005 and 2008. Our study focuses on the properties of transient X-ray sources that reach 2-10 keV luminosities of >1E34 erg/s for an assumed distance of 8 kpc. There are 17 known X-ray transients within the field of view of our campaign, eight of which were detected in outburst during our observations: the transient neutron star low-mass X-ray binaries GRS 1741-2853, AX J1745.6-2901, SAX J1747.0-2853, KS 1741-293 and GRO J1744-28, and the unclassified X-ray transients XMM J174457-2850.3, CXOGC J174535.5-290124 and CXOGC J174541.0-290014. We present their X-ray spectra and flux evolution during our campaign, and discuss these results in light of their historic activity. Our main results include the detection of two thermonuclear X-ray bursts from SAX J1747.0-2853 that were separated by an unusually short time interval of 3.8 min. We detected a thermonuclear X-ray burst and a ~1600-s X-ray eclipse from AX J1745.6-2901. Both XMM J174457-2850.3 and GRO J1744-28 displayed weak X-ray activity above their quiescent levels that is indicative of low-level accretion. In addition to the eight known X-ray transients, we discovered a previously unknown X-ray source that we designate XMMU J174654.1-291542. Based on its X-ray properties and the possible association with an infrared source, we tentatively classify this object as a cataclysmic variable. No new transients were found during our campaign, reinforcing the conclusion of previous authors that most X-ray transients recurring on a time scale of less than a decade have now been identified near the Galactic centre.
description: 25 pages, 13 figures, 4 tables, A&A in press, corrected an error in one source name (XMMU J174654.1-291542)
Food beyond rights: where resistance meets cooperation
Creators: name: Valle, Gabriel
Publisher: name: Mountain Scholar
Year: 2017
Subjects: urban agriculture
community garden
marginals
traditional environmental knowledge
TEK

description: Presented at the Environmental justice in the Anthropocene symposium held on April 24-25, 2017 at the Lory Student Center, Colorado State University, Fort Collins Colorado. This symposium aims to bring together academics (faculty and graduate students), independent researchers, community and movement activists, and regulatory and policy practitioners from across disciplines, research areas, perspectives, and different countries. Our overarching goal is to build on several decades of EJ research and practice to address the seemingly intractable environmental and ecological problems of this unfolding era. How can we explore EJ amongst humans and between nature and humans, within and across generations, in an age when humans dominate the landscape? How can we better understand collective human dominance without obscuring continuing power differentials and inequities within and between human societies? What institutional and governance innovations can we adopt to address existing challenges and to promote just transitions and futures?
description: Includes bibliographical references.
description: One distinctive characteristic of life in the Anthropocene is uncertainty, but that uncertainty is not equally felt amongst the general population. In this essay, I argue that while the new norms of life in the Anthropocene may encourage a placeless, timeless world where individuals appear to be constantly at odds against their own existence, the so-called marginals make use of uncertainty to forge revolutionary subjectivities that enable new ways of being, seeing, and interacting with each other in the search of more just and sustainable worlds. The purpose of the essay is to describe the ways in which a group of low-income and recent immigrant gardeners, those who are often more exposed and vulnerable to the uncertainty of life in the Anthropocene, cultivate new subjectivities that forge alternative pathways toward justice in order to better their quality of life.
Creative Practices & Coproduction_ a Special Issue for 'Evidence & Policy' - Lab4Living _ Design for Health & Wellbeing _ Sheffield Hallam University.pdf
Creators: name: Langley, Joe
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 330306
subject: Design practice and methods

description: In 2019, Policy Press journal ‘Evidence & Policy‘ called for special issue proposals. Evidence & Policy is an interdisciplinary journal exploring the relationship between researchers and the evidence they produce and the concerns of policy makers and practitioners in areas that include health and social care. A team led by Research Fellow Joe Langley responded to this with a Special Issue titled Creativity & Coproduction.The creative design practices used in co-design, and the role these play in sharing, synthesising and mobilising knowledge, have been a significant strand of Lab4Living activity, led by Joe Langley, over the past decade. Co-design has been employed within health research to support and enable better translation of research evidence into practice and policy.Through this co-design work, Joe had established a critical mass of colleagues from around the world with this shared interest, equally driven to continue to challenge, extend and grow the field. Joe convened a small group of interested researchers and describes below how they approached guest editing a special issue.
More Questions on Libya
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: The Obama administration's decision to intervene militarily in Libya has been largely justified on the grounds that the U.S. and its allies were compelled to do this because if left on his own Libyan leader Moammar Gaddafi would have killed many innocent Libyans guilty of nothing more than wanting a better life and more freedom. The general outline of this explanation is almost certainly true, but it is not entirely sufficient and leaves too many questions unanswered. Answering these questions is essential for winning enduring public support for this action, developing a strategy for winding down this intervention and for ensuring that it sets a positive precedent for the future.
Revolution and Democracy in Egypt
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: The term revolution has been used by many people to describe the ongoing demonstrations in Egypt. Additionally, part of the narrative about these events is that the revolution will lead to democracy as most revolutions do. This narrative, however, should be viewed, at this time, as aspirational. It is obviously possible that we will see a revolution in Egypt from which democracy will grow, but it is very far from certain that this is what will happen there.
title: Lymphoma: the greatest mimic maker
Creators: name: Caicedo Montaño, Camilo
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Neoplasia
subject: Metastases
subject: Lymphoma
subject: Diagnostic procedure
subject: Contrast agent-oral
subject: Contrast agent-intravenous
subject: PACS
subject: MR
subject: CT
subject: Oncology
subject: Lymph nodes
subject: Haematologic
subject: Oncologic Imaging

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To describe the spectrum of imaging findings in CT in adult patients diagnosed with lymphoma, characterizing the different manifestations in multiple organs and body systems. To discriminate the most frequent tomographic findings between Hodgkin...
Strepus Cheng, Liu & Dai, 2016, gen. nov.
Creators: name: Cheng, Yu-Rong
name: Liu, Shang-Yin Vanson
name: Dai, Chang-Feng
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Copepoda
Cyclopoida
Strepidae
Strepus

description: Strepus gen. nov.
Diagnosis. Body elongate and cylindrical, external segmentation weakly defined. Urosome 3-segmented. Paired genital apertures located dorso-laterally. Caudal ramus with two terminal setae. Antennule 4-segmented, with armature formula: 0, 3, 2, and 5 setae in female; 0, 3+1 aesthetasc, 2, and 5 setae in male. Antenna uniramous, 3- segmented, with three small denticles on distal segment. Mandible a small blade with teeth on distal side. Maxillule represented by simple lobe tipped with two setae. Maxilla 2-segmented; syncoxa unarmed; basis with a distal lash. Maxilliped 2-segmented; first segment with two setae; second segment with two long setae and one denticle. Legs 1–5 absent in female; legs 1–2 with free segment bearing two terminal setae in male.
Type species. Strepus elongatus sp. nov.
Etymology. The generic name “ Strepus ” is derived from streptococcus and alludes to the body shape of the male. Gender masculine.
description: Published as part of Cheng, Yu-Rong, Liu, Shang-Yin Vanson & Dai, Chang-Feng, 2016, A new family of poecilostomatoid copepods (Strepidae fam. nov.) associated with the sun coral, Tubastraea coccinea Lesson, 1829 in Taiwan, pp. 346-354 in Zootaxa 4174 (1) on page 348, DOI: 10.11646/zootaxa.4174.1.21, http://zenodo.org/record/160182
Mixed inflaton and curvaton scenario with sneutrinos
Creators: name: Şenoğuz, Vedat Nefer
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A variation of sneutrino inflation based on chi^2 potential is considered where the inflaton and the late-decaying field are sneutrinos of different generations. The lighter, late-decaying sneutrino dilutes the gravitinos over-produced after inflaton decay and generates the matter asymmetry. It can also significantly contribute to the curvature perturbation, realizing the mixed inflaton-curvaton case. The cosmic microwave background (CMB) observables can distinguish this case from inflation with chi^2 potential, provided that the initial value of the late-decaying sneutrino is either an order of magnitude smaller or larger than the reduced Planck scale.
description: 1+15 pages, 3 figures, 1 table. v2: minor revision, references added. v3: removed a remark on the decoupling of a RH neutrino from the conclusion, added some explanations and references, matches version accepted by JCAP
What Next for the U.S. in Libya?
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: In 2002-3, President George W. Bush wanted to go to war in Iraq in the worst way possible; and that is more or less exactly what he did. Bush led the country to war based upon a very flimsy rationale, without strong international support and with no clear recognition of the extent or nature of the American commitment which would be required to succeed. The result has been that the war, after eight years this month, has been far more difficult than expected, success has been elusive, costs have been exorbitant and American standing in the world has suffered substantially. A central lesson of Bush‘s rush to war, which is sufficiently obvious that it may not need restating is that it is much easier to get into conflicts like Iraq, that it is to get out.
title: Inguinal canal and its multitude of contents: Pictorial review
Creators: name: Ramesh, Nagabathula
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Abdominal Viscera
subject: Anatomy
subject: Emergency
subject: Musculoskeletal soft tissue
subject: CT
subject: MR
subject: Ultrasound
subject: Abscess delineation
subject: Complications
subject: Normal variants
subject: Abscess
subject: Acute
subject: Hernia
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The purpose of this educational poster is the present a pictorial review of the various usual and unusual contents seen in the inguinal...
Crystal energy functions via the charge in types A and C
Creators: name: Lenart, Cristian
name: Schilling, Anne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 05E05, 33D52, 20G42

description: The Ram-Yip formula for Macdonald polynomials (at t=0) provides a statistic which we call charge. In types A and C it can be defined on tensor products of Kashiwara-Nakashima single column crystals. In this paper we prove that the charge is equal to the (negative of the) energy function on affine crystals. The algorithm for computing charge is much simpler and can be more efficiently computed than the recursive definition of energy in terms of the combinatorial R-matrix.
description: 25 pages; 1 figure
Protein purification to analyze AAA+ proteolytic machine in vitro
Creators: name: Rojas, Diego F.
Publisher: name: Columbia University
Year: 2011
Subjects: Biomechanics

description: The ATP-dependent ClpXP protease of Escherichia coli consists of two subunits, the ClpP subunit, which has the proteolytic activity and the AAA+ motor ClpX, which mechanically unfolds and translocates substrates for ClpP degradation. In order to investigate the mechanical properties of ClpXP during substrate unfolding using magnetical tweezers, here we optimize protocols to purify ClpP and a model substrate based on human Filamin A from E. coli lysates by a combination of metal affinity chromatography and fast performance liquid chromatography (FPLC). ClpX purification was challenging and remains to be improved. Importantly, a HaloTag protein molecule was fused to the Filamin substrate, which allowed covalent bonding to surfaces or fluorescent molecules. We analyzed the mechanical properties of a single Filamin A substrate using atomic force spectroscopy (AFM) and found good correlation with previous single-molecule experiments based on optical tweezers. AFM experiments also demonstrate the successful binding of the HaloTag moiety to a modified glass surface. The results show that the study of ClpXP-mediated degradation of proteins by magnetic tweezers has the potential to unveil the mechanics of protein degradation inside cells.
title: The White Walkers: a new and systematic approach to migratory pulmonary opacities
Creators: name: Caicedo Montaño, Camilo
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Chest
subject: Lung
subject: Respiratory system
subject: Thorax
subject: Conventional radiography
subject: CT
subject: Decision analysis
subject: Diagnostic procedure
subject: Structured reporting
subject: Inflammation
subject: Occupational / Environmental hazards
subject: Not applicable
subject: Multicentre study

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To review the etiologies that produce pulmonary migratory opacities, especially two spectra of diseases: those with a pattern of organizational pneumonia (OP) and with eosinophilic pneumonia (EP). To describe the main drug-induce lung injury (DLI)...
Statistical Thermodynamics of Polymer Quantum Systems
Creators: name: Chacón-Acosta, Guillermo
name: Manrique, Elisa
name: Dagdug, Leonardo
name: Morales-Técotl, Hugo A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 82B30, 81S05, 81Q65, 82B20, 83C45

description: Polymer quantum systems are mechanical models quantized similarly as loop quantum gravity. It is actually in quantizing gravity that the polymer term holds proper as the quantum geometry excitations yield a reminiscent of a polymer material. In such an approach both non-singular cosmological models and a microscopic basis for the entropy of some black holes have arisen. Also important physical questions for these systems involve thermodynamics. With this motivation, in this work, we study the statistical thermodynamics of two one dimensional {\em polymer} quantum systems: an ensemble of oscillators that describe a solid and a bunch of non-interacting particles in a box, which thus form an ideal gas. We first study the spectra of these polymer systems. It turns out useful for the analysis to consider the length scale required by the quantization and which we shall refer to as polymer length. The dynamics of the polymer oscillator can be given the form of that for the standard quantum pendulum. Depending on the dominance of the polymer length we can distinguish two regimes: vibrational and rotational. The first occur for small polymer length and here the standard oscillator in Schrödinger quantization is recovered at leading order. The second one, for large polymer length, features dominant polymer effects. In the case of the polymer particles in the box, a bounded and oscillating spectrum that presents a band structure and a Brillouin zone is found. The thermodynamical quantities calculated with these spectra have corrections with respect to standard ones and they depend on the polymer length. For generic polymer length, thermodynamics of both systems present an anomalous peak in their heat capacity $C_V$.
Obama‘s Baffling Response to Egypt
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2011
Subjects: International relations

description: The Obama administration is behind the curve and sounds strangely out of it with regards to the developing situation in Egypt. Although this is not altogether surprising, it is still disappointing. The U.S. policy towards Egypt, as well as other countries in that region” essentially providing financial and other support to non-democratic leaders in exchange for some stability and cooperation on some security related interests” was always a short term strategy which could never last for very long. In fairness to the administration, this policy has been a bipartisan problem which has gone on for decades, but, it has exploded now during the Obama administration's watch.
Measurements of Natural Carbonate Rare Earth Elements in Femtogram Quantities by Inductive Coupled Plasma Sector Field Mass Spectrometry
Creators: name: Shen, Chuan-Chou
name: Wu, Chung-Che
name: Liu, Yi
name: Yu, Jimin
name: Chang, Ching-Chih
name: Lam, Doan Dinh
name: Chou, Chien-Ju
name: Lo, Li
name: Wei, Kuo-Yen
Publisher: name: Columbia University
Year: 2011
Subjects: Paleoclimatology

description: A rapid and precise standard-bracketing method has been developed for measuring femtogram quantity rare earth element (REE) levels in natural carbonate samples by inductively coupled plasma sector field mass spectrometry that does not require chemical separation steps. A desolvation nebulization system was used to effectively reduce polyatomic interference and enhance sensitivity. REE/Ca ratios are calculated directly from the intensities of the ion beams of 46Ca, 139La, 140Ce, 141Pr, 146Nd, 147Sm, 153Eu, 160Gd, 159Tb, 163Dy, 165Ho, 166Er, 169Tm, 172Yb, and 175Lu using external matrix-matched synthetic standards to correct for instrumental ratio drifting and mass discrimination. A routine measurement time of 3 min is typical for one sample containing 20-40 ppm Ca. Replicate measurements made on natural coral and foraminiferal samples with REE/Ca ratios of 2-242 nmol/mol show that external precisions of 1.9-6.5% (2 RSD) can be achieved with only 10-1000 fg of REEs in 10-20 μg of carbonate. We show that different sources for monthly resolved coral ultratrace REE variability can be distinguished using this method. For natural slow growth-rate carbonate materials, such as sclerosponges, tufa, and speleothems, the high sample throughput, high precision, and high temporal resolution REE records that can be produced with this procedure have the potential to provide valuable time-series records to advance our understanding of paleoclimatic and paleoenvironmental dynamics on different time scales.
title: Ct findings of lung hamartomas with pathologic diagnosis
Creators: name: OZBEY, ONER
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Chest
subject: Respiratory system
subject: CT
subject: Computer Applications-Detection, diagnosis
subject: Neoplasia
subject: Not applicable

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Hamartomas are the most frequently observed benign lung tumors that make up 4% of the total solitary pulmonary nodules. Most are discovered incidentally on routine radiography and require computed tomography (CT) for further evaluation. However, in...
Bioprocessing of nacreous coatings on orthopedic implant materials
Creators: name: Kwan, Millie
Publisher: name: University of British Columbia
Year: 2012

description: Nacre from mollusc shells has a complex hierarchical structure composed of an organic-inorganic composite, and exhibits remarkable mechanical properties. In addition, nacre is biocompatible and bioactive making it an excellent candidate for biological coatings for orthopaedic applications. The bioprocessing of nacreous coatings on conventional orthopedic materials via biomineralization of abalone shells was examined in this thesis. The animal reaction to the materials was evaluated by the coating surface morphology, thickness and coating-implant interface, which were characterized using SEM, EDS, XRD and Raman spectroscopy. In the first test, poly(methyl methacrylate) (PMMA), high density polyethylene (HDPE), and titanium (Ti) substrates were implanted separately on the growth surface of abalone shells to examine the effect of different materials on mineral growth. The abalones were under restricted diet. PMMA and HDPE implants resulted in thicker coatings and were able to achieve the desired nacre structure (thickness of 38.1 ± 28.8 μm and 38.7 ± 22.2 μm, respectively). The titanium implants showed thin and sparse coating and were not able to achieve nacre (thickness of 5.3 ± 3.4μm). In the second test, the effect of Ti surface modification (micro-porous, nano-porous and smooth surface) was examined. The substrates were implant together on one location of the shell and were under normal feeding conditions. Thick nacreous coatings, 50 to 280 µm, were formed on the Ti surfaces. There was no apparent trend between the type of Ti surface and the coating formed; however, it appeared that coatings on the implants were similar within the same animal. Thus, this indicates that feeding conditions and location of implantation may play a role in coating mineralization. In addition, two new unique features were found in the implants that have not been reported in literature before: vaterite and alternating bands of nacre towers and aragonite grains across the coating surface. The findings in this thesis therefore suggest that nacreous coatings can be processed on both polymeric and metallic implant materials as long as proper abalone culturing conditions are maintained. The biofabrication techniques developed in this project can be applied to the development of new classes of surface coatings for biomedical implants.
Ubercalibration of the Deep Lens Survey
Creators: name: Wittman, D.
name: Ryan, R.
name: Thorman, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe the internal photometric calibration of the Deep Lens Survey, which consists of five widely separated fields observed by two different observatories. Adopting the global linear least-squares ("ubercal") approach developed for the Sloan Digital Sky Survey (SDSS), we derive flatfield corrections for all observing runs, which indicate that the original sky flats were nonuniform by up to 0.13 mag peak to valley in $\z$ band, and by up to half that amount in {\it BVR}. We show that application of these corrections reduces spatial nonuniformities in corrected exposures to the 0.01-0.02 mag level. We conclude with some lessons learned in applying ubercal to a survey structured very differently from SDSS, with isolated fields, multiple observatories, and shift-and-stare rather than drift-scan imaging. Although the size of the error caused by using sky or dome flats is instrument- and wavelength-dependent, users of wide-field cameras should not assume that it is small. Pipeline developers should facilitate routine application of this procedure, and surveys should include it in their plans from the outset.
description: accepted to MNRAS
An Abrupt Drowning of the Black Sea Shelf at 7.5 KYR BP
Creators: name: Ryan, William B. F.
name: Major, Candace O.
name: Pitman, William C.
name: Shimkus, Kazimieras S.
name: Moscalenko, Vladimir
name: Jones, Glenn A.
name: Dimitrov, Petko
name: Saking, Mehhmet
name: Seyir, Huseyin Yuce
Publisher: name: Columbia University
Year: 1997
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: During latest Quaternary glaciation, the Black Sea became a giant freshwater lake. The surface of this lake drew down to levels more than 100m below its outlet. When the Mediterranean rose to the Bosporus sill at 7.5 kyr BP, saltwater poured through this spillway to refill the and submerge in less than a year, more than 100,000km2 of its exposed continental shelf.
title: IMACTIS CT Navigation system. A real alternative to different percutaneous interventional procedures in lesions in difficult locations. A pictorial essay.
Creators: name: Gómez Patiño, Juan Antonio
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Cancer
subject: Drainage
subject: Biopsy
subject: Ablation procedures
subject: CT
subject: Oncology
subject: Interventional non-vascular
subject: Interventional Radiology

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To show the utility of IMACTIS in the diagnosis and/or treatment of lesions in difficult locations with high targeting accuracy Emphasize the possibility to performance procedures with local anesthesia or conscious sedation in high risk patients ASA...
A Construction of String 2-Group Models using a Transgression-Regression Technique
Creators: name: Waldorf, Konrad
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 22E67 (Primary) 53C08, 81T30, 58H05 (Secondary)

description: In this note we present a new construction of the string group that ends optionally in two different contexts: strict diffeological 2-groups or finite-dimensional Lie 2-groups. It is canonical in the sense that no choices are involved; all the data is written down and can be looked up (at least somewhere). The basis of our construction is the basic gerbe of Gawedzki-Reis and Meinrenken. The main new insight is that under a transgression-regression procedure, the basic gerbe picks up a multiplicative structure coming from the Mickelsson product over the loop group. The conclusion of the construction is a relation between multiplicative gerbes and 2-group extensions for which we use recent work of Schommer-Pries.
description: 25 pages; v2 is the published version (with some minor corrections)
title: An "extended field-of-view": Introducing a practical approach to orbital tumors in adults
Creators: name: Caicedo Montaño, Camilo
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Head and Neck
subject: Eyes
subject: Head and neck
subject: Neuroradiology peripheral nerve
subject: CT
subject: MR
subject: Decision analysis
subject: Diagnostic procedure
subject: Structured reporting
subject: Lymphoma
subject: Metastases
subject: Neoplasia
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To describe the main imaging findings of the most frequent orbital tumors in the adult population. To propose a practical approach to these tumors according to the compromise of the different anatomic compartments of the...