cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Pseudoaneurysms of the abdominal aorta: MDCT findings.
Creators: name: Palumbo, Cristiana
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Vascular
subject: Arteries / Aorta
subject: CT
subject: Diagnostic procedure
subject: Aneurysms
subject: Infection
subject: Trauma
subject: Retrospective
subject: Diagnostic or prognostic study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The purpose of this retrospective study was to determine the MDCT angiographic findings characterizing psuedoaneurysms of the abdominal aorta (AAPs) AAPs are rare, accounting for about 1% of all aortic aneurysms, most often resulting from trauma,...
title: MDCT findings of extra-articular skeletal tuberculosis: a retrospective study of extra-pulmonary tuberculosis cases.
Creators: name: BIgnardi, Elio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Musculoskeletal
subject: Musculoskeletal bone
subject: Musculoskeletal system
subject: CT
subject: Diagnostic procedure
subject: Infection
subject: Inflammation
subject: Retrospective
subject: Diagnostic or prognostic study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The aim of this study was to evaluate the cases of extrapulmonary tuberculosis (EPTB), investigated by MDCT in the last five years, with reference to extra-articular skeletal tuberculosis, describing the characteristic findings. EPTB is an ancient...
Bi-large neutrino mixing and the Cabibbo angle
Creators: name: Boucenna, S. M.
name: Morisi, S.
name: Tortola, M.
name: Valle, J. W. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent measurements of the neutrino mixing angles cast doubt on the validity of the so-far popular tri-bimaximal mixing ansatz. We propose a parametrization for the neutrino mixing matrix where the reactor angle seeds the large solar and atmospheric mixing angles, equal to each other in first approximation. We suggest such bi-large mixing pattern as a model building standard, realized when the leading order value of the reactor angle equals the Cabibbo angle.
description: 4 pages, 2 figs. v2: matches version appearing in Phys.Rev.D, rapid communications
Additional file 2 of Paternal smoking and preterm birth: a population-based retrospective cohort study among non-smoking women aged 20–49 years in rural China
Creators: name: Wang, Long
name: Deng, Yuzhi
name: Yang, Ying
name: Liu, Fangchao
name: Xu, Qin
name: Peng, Zuoqi
name: He, Yuan
name: Wang, Yuanyuan
name: Xu, Jihong
name: Zhang, Hongguang
name: Zhang, Ya
name: Wang, Qiaomei
name: Shen, Haiping
name: Zhang, Yiping
name: Yan, Donghai
name: Ma, Xu
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: Additional file 2: Figure S1. A flow figure for design of the NFPCP.
Fertility Timing of Unmarried and Married Mothers: Evidence on Variation Across U.S. Cities from the Fragile Families and Child Wellbeing Study
Creators: name: Curtis, Marah A.
name: Waldfogel, Jane
Publisher: name: Columbia University
Year: 2009
Subjects: Families

description: In this paper, we examine the determinants of fertility timing of unmarried and married mothers using a rich new birth cohort study, the Fragile Families and Child Wellbeing Study, drawn from 20 medium and large U.S. cities. We find considerable variation in the time to next birth among comparable mothers who live in different cities. Some of this variation is explained by variation in labor markets, housing costs and availability, and welfare policies. City variation is particularly important for unmarried women who already have two or more children, whose fertility is more sensitive to these contextual variables than is the fertility of married women, or unmarried women with just one child.
Actions of sl_2 on algebras appearing in categorification
Creators: name: Elias, Ben
name: Qi, You
Publisher: name: arXiv
Year: 2021
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We prove that many of the recently-constructed algebras and categories which appear in categorification can be equipped with an action of $\mathfrak{sl}_2$ by derivations. The $\mathfrak{sl}_2$ representations which appear are filtered by tensor products of coverma modules. In a future paper, we will address the implications of the $\mathfrak{sl}_2$ structure for categorification.
description: 50 pages, many figures. V2 contains updates from referee reports. Comments welcome. To appear in Quantum Topology
Increased Prevalence of Celiac Disease in Patients with Unexplained Infertility in the United States: A Prospective Study
Creators: name: Choi, Janet M.
name: Lebwohl, Benjamin
name: Wang, Jeff G.
name: Lee, Susie K.
name: Murray, Joseph A.
name: Sauer, Mark V.
name: Green, Peter H. R.
Publisher: name: Columbia University
Year: 2011
Subjects: Obstetrics
Gynecology

description: Celiac disease is an autoimmune disorder which can present with a variety of non-gastrointestinal manifestations. In women, it may manifest with an assortment of gynecologic or obstetric disorders. Some reports have linked female infertility with undiagnosed celiac disease. Though there are a number of studies from Europe and the Middle East, only two prior American studies have examined the prevalence of "silent" celiac disease in a female infertility population. We prospectively performed serologic screening for celiac disease in 188 infertile women (ages 25–39). While we did not demonstrate an increased prevalence of celiac disease in our overall infertile female population, we were able to detect a significantly increased prevalence (5.9%) of undiagnosed celiac disease among women presenting with unexplained infertility (n=51). Our findings suggest the importance of screening infertile female patients, particularly those with unexplained infertility, for celiac disease.
Does the model for end-stage liver disease accurately predict the occurrence of ninety-day wait-list mortality in atlantic Canadian liver transplat candidates?: a validation study
Creators: name: Renfrew, Paul Douglas
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 155-163
description: Some pages are in colour.
description: Includes copies of ethics approval and copyright permission. Original copies with original Partial Copyright Licence.
Nonchondritic 142Nd in suboceanic mantle peridotites
Creators: name: Cipriani, Anna
name: Bonatti, Enrico
name: W. Carlson, Richard
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Geochemistry
subject: FOS: Earth and related environmental sciences

description: The discovery that several solid Earth reservoirs have a superchondritic 142Nd/144Nd ratio led to the hypothesis that either the bulk silicate Earth is not chondritic or that a subchondritic reservoir lies hidden somewhere within the Earth's interior. One important reservoir, i.e., mid-ocean ridge peridotites representing the main component of the upper oceanic mantle and the source of mid-ocean ridge basalt, has never been tested for 142Nd/144Nd. We determined the 142Nd/144Nd ratio in clinopyroxene separated from two peridotites and a pyroxenite from the SW Indian Ridge and one peridotite from the northern Mid-Atlantic Ridge. All samples analyzed have superchondritic 142Nd/144Nd ratios in line with mantle-derived material measured to date, except for some ancient cratonic rocks.
Active spintronic-metasurface terahertz emitters with tunable chirality
Creators: name: Liu, Changqin
name: Zhang, Sheng
name: Wang, Shunjia
name: Cai, Qingnan
name: Wang, Peng
name: Tian, Chuanshan
name: Zhou, Lei
name: Wu, Yizheng
name: Tao, Zhensheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The ability to manipulate the electric-field vector of broadband terahertz waves is essential for applications of terahertz technologies in many areas, and can open up new possibilities for nonlinear terahertz spectroscopy and coherent control. Here, we propose a novel laser-driven terahertz emitter, consisting of metasurface-patterned magnetic multilayer heterostructures. Such hybrid terahertz emitters can combine the advantages of spintronic emitters for being ultrabroadband, efficient and flexible, as well as those of metasurfaces for the unique capability to manipulate terahertz waves with high precision and degree of freedom. Taking a stripe-patterned metasurface as an example, we demonstrate the generation of broadband terahertz waves with tunable chirality. Based on experimental and theoretical studies, the interplay between the laser-induced spintronic-origin currents and the metasurface-induced transient charges/currents are investigated, revealing the strong influence on the device functionality originated from both the light-matter interactions in individual metasurface units and the dynamic coupling between them. Our work not only offers a flexible, reliable and cost-effective solution for chiral terahertz wave generation and manipulation, but also opens a new pathway to metasurface-tailored spintronic devices for efficient vector-control of electromagnetic waves in the terahertz regime.
Academic and psychological impact of cyber bullying
Creators: name: Nordahl, Jennifer
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 67-76
description: Includes copies of ethics approval. Original copies with original Partial Copyright Licence.
description: Cyber bullying has emerged as a new form of bullying affecting a large portion of children. Children that were victims of cyber bullying (n = 239) in grades 6, 7, 10, and 11 were surveyed to. examine whether they experienced impaired academic performance and psychological well-being. Seven types of cyber bullying were identified. Through correlations the results demonstrated that all seven types of cyber bullying are significantly related to children's well-being. One-way ANOVAs and t-tests indicate that specific characteristics of the victim (sex, grade, and perpetrator) are associated with differential impact. In addition, this study found that deconstructing cyber bullying by type reveals unique information. For some types of cyber bullying, for example, girls and young children report more severe impact than boys and older children. Overall, the study demonstrates the importance of examining different types of cyber bullying to gain an understanding of children's experiences of this phenomenon .
title: CACS (MALS, CAS ) or Harjola-Dunbar syndrome: MDCT angiography findings.
Creators: name: BIgnardi, Elio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Performed at one institution
subject: Diagnostic or prognostic study
subject: Retrospective
subject: Congenital
subject: Diagnostic procedure
subject: CT
subject: Vascular

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Celiac artery compression syndrome ( CACS ) or median arcuate ligament syndrome (CAS) or celiac axis syndrome (CAS ), also referred to as Harjola syndrome (1963) or Dunbar syndrome (1965) is a rare cause of postprandial abdominal pain, consequent to...
Teaching emergency preparedness to public health workers: use of blended learning in web-based training
Creators: name: Chandler, Thomas E.
name: Qureshi, Kristine A.
name: Gebbie, Kristine M.
name: Morse, Stephen S.
Publisher: name: Columbia University
Year: 2008
Subjects: Emergency management
Disaster medicine
Emergency medical personnel--Training of

description: This article presents the development of a program and results of a study to evaluate an online distancebased learning (DBL) program for competency-based, basic emergency preparedness training for employees of local health departments nationwide. The program was developed and implemented beginning in May 2003 by Columbia University’s Center for Public Health Preparedness (CU-CPHP), and was designed to be delivered in two parts. The first part was an online training program, providing the basic knowledge required for public health preparedness. The second part was a downloadable template, which the student could use to guide learning and subsequent demonstration of the core emergency preparedness competencies to his or her supervisor. The student could return this documentation to the CU-CPHP to receive a certificate of completion, which would be e-mailed to the recipient. Evaluation findings indicate that this course resulted in a high degree of participant satisfaction along with an increased level of participant understanding of the basic emergency preparedness core competencies.
Electrohydrodynamic modeling of microdroplet motion in digital microfluidic systems
Creators: name: Ahmadi, Ali
Publisher: name: University of British Columbia
Year: 2011

description: Digital microfluidic devices provide a new technology platform for controlled motion of small volumes of fluid. These systems can provide high speed microdroplet transport on integrated electrode arrays. The generic nature of these electrode architectures offers versatility, scalability, and reconfigurability that is crucial for biomedical, chemical, and sensing applications. The structural layout of digital microfluidic devices and the employed electrical activation schemes must be considered together in the design and operation of successful fluid actuation. Microfluidic models provide an effective tool for predicting this device performance and optimizing parameters to achieve high efficiency. Numerical simulation of the electrodynamics of microdroplet motion in digital microfluidic systems will provide better understanding of the effects of electrode shape on actuation forces, actuation voltage/frequency and liquid properties (e.g., conductivity, permittivity, and surface tension) on microdroplet actuation. However, the development of such models is far from trivial as many complex physicochemical phenomena become involved in the transport. In this thesis, a novel numerical multiphysic approach is used to model the microdroplet motion in digital microfluidic systems. The actuation force in the system of the interest is provided by applying voltage to the underlying electrodes. The main focus of this study is on the conductive liquids, however the electromechanical approach used in this research can be readily extended to dielectric liquids. The proposed model employs an electrohydrodynamic approach for estimating the driving, wall and filler forces. Additionally, the effects of the evaporation are considered from two aspects: it is shown that an additional force is needed to balance the dynamic equation of the microdroplet motion, and the microdroplet interface is deformed due to the change in the microdroplet radius. Finally, the effects of the biomolecular adsorption are included by adding a new force to the dynamic equation of the microdroplet motion, and the adsorption rate is then related to the change in the interfacial tensions and the capacitance of the underlying layers. The results of the developed model are presented and verified with experimental data obtained from literature, and it is shown that the model provides an accurate representation of microdroplet transport in digital microfluidic systems.
Endocrine abnormalities in ovulatory women with polycystic ovaries on ultrasound
Creators: name: Carmina, Enrico
name: Wong, I. Lane
name: Chang, Lilly
name: Paulson, Richard J.
name: Sauer, Mark V.
name: Stanczyk, Frank Z.
name: Lobo, Rogerio A.
Publisher: name: Columbia University
Year: 1997
Subjects: Developmental biology
Endocrinology

description: Polycystic-appearing ovaries (PAO) on ultrasound have been described in a variety of endocrinopathies and also occur in ovulatory women. By some investigators this is merely referred to as 'PCO' (polycystic ovaries). Although there is controversy in this regard, we do not consider women with PAO/PCO who have no known endocrine disturbance to have polycystic ovary syndrome (PCOS) and therefore prefer not to use the term 'PCO' which is often equated with PCOS. We studied 15 ovulatory women with normal-appearing (NAO) ovaries on ultrasound and 15 matched ovulatory women with PAO/PCO. Compared to ovulatory women, 25 other women were studied who were considered to have PCOS. Of these, 15 were overweight and 10 were of normal weight. All the PCOS women had serum concentrations of luteinizing hormone (LH), testosterone, unbound testosterone, androstenedione and dihydroepiandrosterone sulphate (DHEAS) which were significantly higher (P < 0.01) than values in the normal women, regardless of ovarian morphology. These values were similar in the two groups of ovulatory women with NAO and PAO/PCO. Fasting insulin was elevated in women with PCOS with increased body weight (P < 0.01) and was higher than in ovulatory women with NAO and PAO/PCO and than in women of normal weight with PCOS. Serum insulin-like growth factor (IGF)-I and binding protein (BP)-3 were similar in all groups but serum IGFBP-1 was significantly (P < 0.01) lower in those women with PCOS with increased body weight, compared to all other groups. Compared to values in ovulatory women with NAO, serum IGFBP-1 was also significantly (P < 0.05) lower in women with PAO/PCO and those women with PCOS of normal weight. These lower values were similar in women with PAO/PCO and in normal weight women with PCOS. On an individual basis, an elevation of at least one serum androgen value was found in 33% of women with PAO/PCO. These data confirm that increased body weight accentuates the metabolic alterations in PCOS, but suggest that subtle endocrine disturbances, similar to those that are found in PCOS, may be uncovered in up to a third of ovulatory women with PAO/PCO. It appears that a disturbance of the IGF/IGFBP-1 axis is common and apparently closely associated with alterations in ovarian morphology.
Optical Line Emission in Brightest Cluster Galaxies at 0 < z < 0.6: Evidence for a Lack of Strong Cool Cores 3.5 Gyr Ago?
Creators: name: McDonald, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In recent years the number of known galaxy clusters beyond z > 0.2 has increased drastically, with the release of multiple catalogs containing >30,000 optically-detected galaxy clusters over the range 0 < z < 0.6. Combining these catalogs with the availability of optical spectroscopy of the brightest cluster galaxy from the Sloan Digital Sky Survey allows for the evolution of optical emission-line nebulae in cluster cores to be quantified. For the first time, the continuous evolution of optical line emission in brightest cluster galaxies over the range 0 < z < 0.6 is determined. A minimum in the fraction of BCGs with optical line emission is found at z \sim 0.3, suggesting that complex, filamentary emission in systems such as Perseus A are a recent phenomenon. Evidence for an upturn in the number of strongly-emitting systems is reported beyond z > 0.3, hinting at an earlier epoch of strong cooling. We compare the evolution of emission line nebulae to the X-ray-derived cool core (CC) fraction from the literature over the same redshift range and find overall agreement, with the exception that an upturn in the strong CC fraction is not observed at z > 0.3. The overall agreement between the evolution of cool cores and optical line emission at low redshift suggests that emission-line surveys of galaxy clusters may provide an efficient method of indirectly probing the evolution of cool cores and, thus, provide insights into the balance of heating and cooling processes at early cosmic times.
description: 14 pages, 4 figures, accepted for publication in ApJ letters
title: Conference program: AGU hydrology days 2005
title: Hydrology days 2005
titleType: AlternativeTitle
title: AGU hydrology days 2005
titleType: AlternativeTitle
Creators: name: American Geophysical Union, Author
name: Colorado State University, Author
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2005
Subjects: subject: Hydrology -- Congresses

description: Includes bibliographical references.
description: Program of 2005 annual AGU Hydrology Days held at Colorado State University on March 7-March 9, 2005.
Additional file 1 of Association of the time course of Chinese visceral adiposity index accumulation with cardiovascular events in patients with hypertension
Creators: name: Wu, Yuntao
name: Xu, Wenqi
name: Guo, Lu
name: Li, Wenjuan
name: Zhang, Lisha
name: Gao, Lishu
name: Zhu, Chenrui
name: Chen, Shuohua
name: Lin, Liming
name: Wu, Shouling
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Supplementary Material 1
Staircase symmetries in Hirzebruch surfaces
Creators: name: Magill, Nicki
name: McDuff, Dusa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symplectic Geometry (math.SG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 53D05, 11D99

description: This paper continues the investigation of staircases in the family of Hirzebruch surfaces formed by blowing up the projective plane with weight b, that was started in Bertozzi, Holm et al. in arXiv:2010.08567. We explain the symmetries underlying the structure of the set of b that admit staircases, and show how the properties of these symmetries arise from a governing Diophantine equation. We also greatly simplify the techniques needed to show that a family of steps does form a staircase by using arithmetic properties of the accumulation function. There should be analogous results about both staircases and mutations for the other rational toric domains considered, for example, by Cristofaro-Gardiner et al. in arXiv:2004.07829 and by Casals--Vianna in arXiv:2004.13232.
description: 57 pages, 3 figures,v2 reorganized with new Sec 2.2, v3 new Lemmas 2.2.1, 4.2.7, corrected proof of Lemma 4.3.1
Incorporating Forcing Terms in Cascaded Lattice-Boltzmann Approach by Method of Central Moments
Creators: name: Premnath, Kannan N.
name: Banerjee, Sanjoy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: Cascaded lattice-Boltzmann method (Cascaded-LBM) employs a new class of collision operators aiming to improve numerical stability. It achieves this and distinguishes from other collision operators, such as in the standard single or multiple relaxation time approaches, by performing relaxation process due to collisions in terms of moments shifted by the local hydrodynamic fluid velocity, i.e. central moments, in an ascending order-by-order at different relaxation rates. In this paper, we propose and derive source terms in the Cascaded-LBM to represent the effect of external or internal forces on the dynamics of fluid motion. This is essentially achieved by matching the continuous form of the central moments of the source or forcing terms with its discrete version. Different forms of continuous central moments of sources, including one that is obtained from a local Maxwellian, are considered in this regard. As a result, the forcing terms obtained in this new formulation are Galilean invariant by construction. The method of central moments along with the associated orthogonal properties of the moment basis completely determines the expressions for the source terms as a function of the force and macroscopic velocity fields. In contrast to the existing forcing schemes, it is found that they involve higher order terms in velocity space. It is shown that the proposed approach implies "generalization" of both local equilibrium and source terms in the usual lattice frame of reference, which depend on the ratio of the relaxation times of moments of different orders. An analysis by means of the Chapman-Enskog multiscale expansion shows that the Cascaded-LBM with forcing terms is consistent with the Navier-Stokes equations. Computational experiments with canonical problems involving different types of forces demonstrate its accuracy.
description: 55 pages, 4 figures
title: Quantitative evaluation of multi-band acquisition on task fMRI sequences
Creators: name: Sanchez Sanchez, Verónica
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Prospective
subject: Education and training
subject: Efficacy studies
subject: Diagnostic procedure
subject: MR-Functional imaging
subject: MR
subject: Radiographers
subject: Neuroradiology brain
subject: Head and neck
subject: MRI

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Validate the efficiency of multi-band use in functional magnetic resonance imaging (fMRI) sequences for clinical practice in order to reduce the acquisition times in task-fMRI in clinical...
On Zudilin's q-question about Schmidt's problem
Creators: name: Guo, Victor J. W.
name: Zeng, Jiang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A10, 05A30, 11B65

description: We propose an elemantary approach to Zudilin's q-question about Schmidt's problem [Electron. J. Combin. 11 (2004), #R22], which has been solved in a previous paper [Acta Arith. 127 (2007), 17--31]. The new approach is based on a q-analogue of our recent result in [J. Number Theory 132 (2012), 1731--1740] derived from q-Pfaff-Saalschutz identity.
description: 5 pages
Integrating cross-cultural psychiatry into the study of mental health disparities
Creators: name: Cabassa, Leopoldo J.
Publisher: name: Columbia University
Year: 2003
Subjects: Mental health

description: Snowden’s article in the February issue of the Journal presents a comprehensive review of the literature regarding the role that practitioners’ bias plays in the development of racial and ethnic disparities in the current mental health system. Missing from this review is the growing literature that directly examines the role that culture plays in the expression, presentation, and course of mental illnesses.
Labour unions and labour movements in the readymade garment industry in Bangladesh in the era of globalization (1980-2009)
Creators: name: Rahman, Zia
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 256-280
description: A few pages are in colour.
description: Includes copy of ethics approval. Original copy with original Partial Copyright Licence.
description: Bangladesh has been part of the globalized ready made garment (RMG) industry since the early 1980s. In 2008-09 there were 4,825 RMG factories in Bangladesh employing 3.1 million people. This workforce included 2.38 million women and is an illustration of a globalization process termed the feminization of labour. Bangladesh's RMG industry has flourished because its workers are among the lowest paid garment workers in the world. This dissertation 1s a longitudinal case study of labour umons and labour movements in the RMG industry in Bangladesh between 1980 and 2009. The research and analysis are informed by insights from classical Marxist theory, world-systems theory, and Ronaldo Munck's influential "globalization and labour" thesis. In the early years of the RMG industry there was relatively little resistance by the workers to their abject exploitation. The reasons that workers failed to resist included the harsh tactics of factory owners who would terminate, sue or arrange to have local leaders assaulted by paid thugs or the state police; the failure of civil society organizations, with the exception of a few leftist unions, to support the workers' struggles; and the fact that the garment workers were 'first generation' rural migrants to the city who lacked any knowledge of workers' rights. In May 2006 there was a massive protest by RMG workers that secured a significant increase in the minimum wage and the first tripartite agreement in the industry's history. This victory for workers was partially undermined by unions that work collaboratively with the employers ' association. Nevertheless the May 2006 upsurge changed the terrain of struggle as evidenced by the 2007 concession that legalized labour unions organizing in the export producing zones. My conclusion is that until the state changes its elite-centered policy, until the owners change their feudal mindset and abide by the labour laws and ILO conventions, and until international labour organizations are free from any hidden, protectionist agendas, militant labour movements are the only way that Bangladesh's RMG workers will be able to successfully pursue their demands.
Four Symmetries of the KdV equation
Creators: name: Rasin, Alexander G.
name: Schiff, Jeremy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 58D19 17B80

description: We revisit the symmetry structure of integrable PDEs, looking at the specific example of the KdV equation. We identify 4 nonlocal symmetries of KdV depending on a parameter, which we call generating symmetries. We explain that since these are nonlocal symmetries, their commutator algebra is not uniquely determined, and we present three possibilities for the algebra. In the first version, 3 of the 4 symmetries commute; this shows that it is possible to add further (nonlocal) commuting flows to the standard KdV hierarchy. The second version of the commutator algebra is consistent with Laurent expansions of the symmetries, giving rise to an infinite dimensional algebra of hidden symmetries of KdV. The third version is consistent with asymptotic expansions for large values of the parameter, giving rise to the standard commuting symmetries of KdV, the infinite hierarchy of "additional symmetries", and their traditionally accepted commutator algebra (though this also suffers from some ambiguity as the additional symmetries are nonlocal). We explain how the 3 symmetries that commute in the first version of the algebra can all be regarded as infinitesimal double Bäcklund transformations. The 4 generating symmetries incorporate all known symmetries of the KdV equation, but also exhibit some remarkable novel structure, arising from their nonlocality. We believe this structure to be shared by other integrable PDEs.
description: 22 pages
Cosmological backreaction of a quantized massless scalar field
Creators: name: Kaya, Ali
name: Tarman, Merve
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the backreaction problem of a quantized minimally coupled massless scalar field in cosmology. The adiabatically regularized stress-energy tensor in a general Friedmann-Robertson-Walker background is approximately evaluated by using the fact that subhorizon modes evolve adiabatically and superhorizon modes are frozen. The vacuum energy density is verified to obey a new first order differential equation depending on a dimensionless parameter of order unity, which calibrates subhorizon/superhorizon division. We check the validity of the approximation by calculating the corresponding vacuum energy densities in fixed backgrounds, which are shown to agree with the known results in de Sitter space and space-times undergoing power law expansions. We then apply our findings to slow-roll inflationary models. Although backreaction effects are found to be negligible during the near exponential expansion, the vacuum energy density generated during this period might be important at later stages since it decreases slower than radiation or dust.
description: 20 pages, 2 figures, v2: comments and a reference added, to appear in JCAP
The effect of acoustic cue redundancy on the perception of stop consonants by older and younger adults
Creators: name: Carter, Nathaniel Ryan
Publisher: name: University of British Columbia
Year: 2011

description: Speech recognition is known to become more difficult as aging progresses. Though age-related hearing loss accounts for a significant portion of this difficulty, changes in cognitive processing and in the central auditory nervous system are also thought to contribute. Age-related speech recognition declines become most apparent for complex speech signals in which acoustic cues may be degraded, missing, or misaligned temporally. Each phoneme normally contains multiple, redundant acoustic cues signaling its presence and identity. The redundancy hypothesis suggests that older listeners require this natural redundancy of acoustic cues to a greater extent than do younger listeners, and it is the paucity of redundant cues within complex signals that makes them especially difficult for older listeners. The main purpose of the present study was to determine whether age-related redundancy effects existed when only single or dual acoustic cues signaled the presence of a stop consonant. Closure gap and release burst amplitude were varied for two phoneme contrast pairs (/p/ in speed/seed and /t/ in steam/seam) constructed from natural recordings. Six older and 6 younger participants with normal hearing (better than 25 dB HL from 250-4000 Hz) were tested. Using a 2-alternative forced choice (AFC) paradigm, participants indicated whether they heard the word as containing the stop consonant or not. ANOVA of the results revealed a main effect of burst amplitude and inconsistent effects of age but no interaction between burst amplitude and age, p = .803 for /p/ and .232 for /t/. For those steam/seam contrast stimuli in which closure gap was the only cue to stop presence, older listeners reached threshold perception of /t/ as gap duration increased but younger listeners did not. Because they do not show an interaction between age and the presence of redundant acoustic cues, these combined patterns of results do not support the redundancy hypothesis. They suggest rather that older and younger listeners with comparable hearing make similar use of the redundant presence of stop closure gap and consonant release bursts.
Spatially homogeneous few-cycle compression of Yb lasers via all-solid-state free-space soliton management
Creators: name: Zhu, Bingbing
name: Fu, Zongyuan
name: Chen, Yudong
name: Peng, Sainan
name: Jin, Cheng
name: Fan, Guangyu
name: Zhang, Sheng
name: Wang, Shunjia
name: Ru, Hao
name: Tian, Chuanshan
name: Wang, Yihua
name: Kapteyn, Henry
name: Murnane, Margaret
name: Tao, Zhensheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The high power and variable repetition rate of Yb femtosecond lasers make them very attractive for ultrafast science. However, for capturing sub-200 fs dynamics, efficient, high-fidelity, and high-stability pulse compression techniques are essential. Spectral broadening using an all-solid-state free-space geometry is particularly attractive, as it is simple, robust, and low-cost. However, spatial and temporal losses caused by spatio-spectral inhomogeneities have been a major challenge to date, due to coupled space-time dynamics associated with unguided nonlinear propagation. In this work, we use all-solid-state free-space compressors to demonstrate compression of 170 fs pulses at a wavelength of 1030nm from a Yb:KGW laser to ~9.2 fs, with a highly spatially homogeneous mode. This is achieved by ensuring that the nonlinear beam propagation in periodic layered Kerr media occurs in soliton modes and confining the nonlinear phase through each material layer to less than 1.0 rad. A remarkable spatio-spectral homogeneity of ~0.87 can be realized, which yields a high efficiency of >50% for few-cycle compression. The universality of the method is demonstrated by implementing high-quality pulse compression under a wide range of laser conditions. The high spatiotemporal quality and the exceptional stability of the compressed pulses are further verified by high-harmonic generation. This work represents the highest efficiency and the best spatio-spectral quality ever achieved by an all-solid-state free-space pulse compressor for few-cycle-pulse generation.
title: Correlation of US and MRE images in children with active Crohn's disease - preliminary study.
Creators: name: Zbroja, Monika
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Diagnostic or prognostic study
subject: Not applicable
subject: Patterns of Care
subject: Outcomes
subject: Inflammation
subject: Diagnostic procedure
subject: Contrast agent-oral
subject: Comparative studies
subject: MR-Enterography
subject: Abdomen
subject: GI Tract

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Crohn's disease is a chronic inflammatory bowel disease. The incidence of it in Europe ranges 1 - 11.4 per 100,000 population per year.The most common localization of inflammatory lesions is the terminal segment of the ileum, followed by the small...
An Electromagnetic-Flux-Distribution Model for the Analyses of Superconducting Josephson Junction Circuits and Quantum Phase-Slip Junction Circuits
Creators: name: Wang, Yongliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Josephson junctions and the quantum phase-slip (QPS) junctions are two quantum circuit elements introduced by superconducting electronics to create various hybrid circuits. Josephson junctions bring the developments of superconducting quantum interference devices (SQUIDs) and single-flux quantum (SFQ) digital circuits; as the dual element of Josephson junctions, QPS junctions are used to design the new devices dual to Josephson junction circuits. In order to bridge the gap between superconducting and non-superconducting circuits, this article presents an electromagnetic-flux-distribution model to unify the superconducting and non-superconducting circuit analyses. This model redefines the circuit laws and functions of circuit elements using the conventional electric variables; it provides the unified circuit equations to depict the working principles of circuits viewed from electric and magnetic fields; it also derives the mathematical expression of duality principles between Josephson junction and QPS Junction circuits. The application of this electromagnetic-flux-distribution model is demonstrated in the analyses of a Josephson junction circuit and its dual QPS junction circuit. It shows that Josephson junction circuits are the magnetic-flux-distribution systems, while QPS junction circuits are the electric-flux-distribution systems, they are modulated by the Josephson effect and the phase-slip effect.
description: 8 pages, 13 figures
Kinetic theory of long-range interacting systems with angle-action variables and collective effects
Creators: name: Chavanis, Pierre-Henri
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop a kinetic theory of systems with long-range interactions taking collective effects and spatial inhomogeneity into account. Starting from the Klimontovich equation and using a quasilinear approximation, we derive a Lenard-Balescu-type kinetic equation written in angle-action variables. We confirm the result obtained by Heyvaerts [Mon. Not. R. Astron. Soc. {\bf 407}, 355 (2010)] who started from the Liouville equation and used the BBGKY hierarchy truncated at the level of the two-body distribution function. When collective effects are neglected, we recover the Landau-type kinetic equation obtained in our previous papers [P.H. Chavanis, Physica A {\bf 377}, 469 (2007); J. Stat. Mech., P05019 (2010)]. We also consider the relaxation of a test particle in a bath of field particles. Its stochastic motion is described by a Fokker-Planck equation written in angle-action variables. We determine the diffusion tensor and the friction force by explicitly calculating the first and second order moments of the increment of action of the test particle from its equations of motion, taking collective effects into account. This generalizes the expressions obtained in our previous works. We discuss the scaling with $N$ of the relaxation time for the system as a whole and for a test particle in a bath.
title: Quantitative CT-based assessment of abdominal fat distribution in male patients with urothelial bladder cancer.
Creators: name: Presti, Gabriele
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Case-control study
subject: Retrospective
subject: Neoplasia
subject: Cancer
subject: Experimental investigations
subject: Contrast agent-intravenous
subject: Image manipulation / Reconstruction
subject: CT
subject: Urinary Tract / Bladder
subject: Abdomen
subject: Genitourinary

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Bladder cancer (BC) is the ninth most frequently diagnosed cancer in the world. Europe has one of the highest rates in the world, particularly in men in Southern Europe, especially in Spain and Italy [1]. The most common histological subtype of BC...
Multi-Scale Analysis of Magnetic Fields in Filamentary Molecular Clouds in Orion A
Creators: name: Poidevin, Frédérick
name: Bastien, Pierre
name: Jones, Terry J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: New visible and K-band polarization measurements on stars surrounding molecular clouds in Orion A and stars in the BN vicinity are presented. Our results confirm that magnetic fields located inside the Orion A molecular clouds and in their close neighborhood are spatially connected. On and around the BN object, we measured the angular offsets between the K-band polarization data and available submm data. We find high values of the polarization degree, P_{K}, and of the optical depth, τ_{K}, close to an angular offset position of 90^{\circ} whereas lower values of P_{K} and τ_{K} are observed for smaller angular offsets. We interpret these results as evidence for the presence of various magnetic field components toward lines of sight in the vicinity of BN. On a larger scale, we measured the distribution of angular offsets between available H-band polarization data and the same submm data set. Here we find an increase of with angular offset which we interpret as a rotation of the magnetic field by \lesssim 60^{\circ}. This trend generalizes previous results on small scale toward and around lines of sight to BN and is consistent with a twist of the magnetic field on a larger scale towards OMC-1. A comparison of our results with several other studies suggests that a two-component magnetic field, maybe helical, could be wrapping the OMC-1 filament.
description: 53 pages, 21 figures, 7 tables, Accepted in the Astrophysical Journal
title: CT and MRI Features of groove pancreatitis
Creators: name: Lei, zhengxian
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Performed at one institution
subject: Diagnostic or prognostic study
subject: Retrospective
subject: Inflammation
subject: Dissection
subject: Diagnostic procedure
subject: MR
subject: CT
subject: Abdomen
subject: Abdominal Viscera

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To investigate the characteristics of CT and MR images of groove pancreatitis to improve the understanding and diagnosis of the...
Variational Monte Carlo with the Multi-Scale Entanglement Renormalization Ansatz
Creators: name: Ferris, Andrew J.
name: Vidal, Guifre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Monte Carlo sampling techniques have been proposed as a strategy to reduce the computational cost of contractions in tensor network approaches to solving many-body systems. Here we put forward a variational Monte Carlo approach for the multi-scale entanglement renormalization ansatz (MERA), which is a unitary tensor network. Two major adjustments are required compared to previous proposals with non-unitary tensor networks. First, instead of sampling over configurations of the original lattice, made of L sites, we sample over configurations of an effective lattice, which is made of just log(L) sites. Second, the optimization of unitary tensors must account for their unitary character while being robust to statistical noise, which we accomplish with a modified steepest descent method within the set of unitary tensors. We demonstrate the performance of the variational Monte Carlo MERA approach in the relatively simple context of a finite quantum spin chain at criticality, and discuss future, more challenging applications, including two dimensional systems.
description: 11 pages, 12 figures, a variety of minor clarifications and corrections
title: Amyloid deposition in cortical gyri, but not cortical sulci, is greater in females than in males across the Alzheimer’s disease spectrum
Creators: name: Prescott, Jeffrey
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Cross-sectional study
subject: Retrospective
subject: Dementia
subject: Experimental investigations
subject: PET
subject: MR
subject: Neuroradiology brain
subject: Neuro
subject: Multicentre study

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Previous studies have evaluated the pattern of gyrification in the cortex and its possible relation to AD symptomatology [1-4]. In these studies, abnormalities in global sulcal index and sulcal width have been associated with cognitive decline,...