cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chiral assembly of weakly curled hard rods: effect of steric chirality and polarity
Creators: name: Wensink, H. H.
name: Morales-Anda, L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We theoretically investigate the pitch of lyotropic cholesteric phases composed of slender rods with steric chirality transmitted via a weak helical deformation of the backbone. In this limit, the model is amenable to analytical treatment within Onsager theory and a closed expression for the pitch versus concentration and helical shape can be derived. Within the same framework we also briefly review the possibility of alternative types of chiral order, such as twist-bend or screw-like nematic phases, finding that cholesteric order dominates for weakly helical distortions. While long-ranged or `soft' chiral forces usually lead to a pitch decreasing linearly with concentration, steric chirality leads to a much steeper decrease of quadratic nature. This reveals a subtle link between the range of chiral intermolecular interaction and the pitch sensitivity with concentration. A much richer dependence on the thermodynamic state is revealed for polar helices where parallel and anti-parallel pair alignments along the local director are no longer equivalent. It is found that weak temperature variations may lead to dramatic changes in the pitch, despite the lyotropic nature of the assembly.
description: 9 pages, 3 figures
Total Worker Health: Political, Legal and Equity Considerations
Creators: name: Lee, Edward
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: This paper discusses the legal, political and equity implications of Total Worker Health (TWH), a twelve-year old initiative of the National Institute of Occupational Safety and Health (NIOSH) dedicated to advancing worker well-being through the integration of workplace safety protections and health promotion. TWH has engendered a significant amount of controversy in its brief existence, mainly from labor advocates, social scientists and health policy researchers who believe that the initiative has failed to acknowledge or support the contribution of work organization and social and political variables to the health of American workers. This paper will discuss how NIOSH’s April 2016 National Agenda to Advance TWH Research, Practice, Policy, and Capacity (the “Agenda”) has addressed many of these controversies by providing, for the first time, a statement of clear purpose and direction for TWH. In doing so, this paper aims to generate thoughtful questions for stakeholders and to assist health and policy professionals dedicated to the improvement of worker health. Evidence is drawn from an evaluation of the Agenda informed by appropriate policy-level frameworks, a legal analysis of NIOSH, including its legislative history and relevant statutory and case law, and a secondary review of the literature examining the effectiveness of TWH interventions in improving worker health and productivity.
A quantum phase transition in the one-dimensional water chain
Creators: name: Serwatka, Tobias
name: Melko, Roger G.
name: Burkov, Anton
name: Roy, Pierre-Nicholas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The concept of quantum phase transitions (QPT) plays a central role in the description of condensed matter systems. In this contribution, we perform high-quality wavefunction-based simulations to demonstrate the existence of a quantum phase transition in a crucially relevant molecular system, namely water, forming linear chains of rotating molecules. We determine various critical exponents and reveal the water chain QPT to belong to the (1+1) dimensional Ising universality class. Furthermore, the effect of breaking symmetries is examined and it is shown that by breaking the inversion symmetry, the ground state degeneracy of the ordered quantum phase is lifted to yield two many-body states with opposite polarization. The possibility of forming ferroelectric phases together with a thermal stability of the quantum critical regime up to ~10 K makes the linear water chain a promising candidate as a platform for quantum devices.
description: 6 pages, 4 figures
title: Can an advanced model iterative reconstruction technique improve the diagnostic accuracy in obese patients undergoing abdominal CT at different tube voltages?
Creators: name: Euler, Andre
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Abdomen
subject: Radioprotection / Radiation dose
subject: CT
subject: Image manipulation / Reconstruction
subject: Efficacy studies
subject: Radiation effects
subject: Technology assessment

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To assess the low-contrast detectability and image quality of a recently introduced "advanced modeled iterative reconstruction" technique (ADMIRE, Siemens) compared with filtered back projection (FBP) at three different tube voltages in abdominal CT...
Nondegenerate solitons in the integrable fractional coupled Hirota equation
Creators: name: An, Ling
name: Ling, Liming
name: Zhang, Xiaoen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, based on the nonlinear fractional equations proposed by Ablowitz, Been, and Carr in the sense of Riesz fractional derivative, we explore the fractional coupled Hirota equation and give its explicit form. Unlike the previous nonlinear fractional equations, this type of nonlinear fractional equation is integrable. Therefore, we obtain the fractional $n$-soliton solutions of the fractional coupled Hirota equation by inverse scattering transformation in the reflectionless case. In particular, we analyze the one- and two-soliton solutions of the fractional coupled Hirota equation and prove that the fractional two-soliton can also be regarded as a linear superposition of two fractional single solitons as $|t|\to\infty$. Moreover, under some special constraint, we also obtain the nondegenerate fractional soliton solutions and give a simple analysis for them.
Folic Acid to Prevent Neural Tube Defects: An Intervention for Hispanic Families
Creators: name: Lawrence, Faith W., MD
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Congenital malformations are one of the leading causes of infant morbidity and mortality in the United States, and neural tube defects comprise a significant number of those malformations. Neural tube defects (NTD) are caused by a lack of closure of the neural tube at various levels of the spinal cord during development. About one child in 1000 is born each year in the United States with some type ofNTD. The incidence ofNTD is higher among Hispanics. Approximately 50-70% of NTD can be prevented by the ingestion of at least 0.4 milligrams of folic acid prior to and just after conception. The main goal of this program plan is to increase awareness of neural tube defects and their prevention with folic acid. The targeted group will be Hispanic women of childbearing age who reside in a rural North Carolina county and use the county health department as their usual source of care. The program will focus on educating the women and their families about the importance of supplementation of a healthy diet with folic acid, in order to prevent neural tube defects in their children. It will integrate well-known health behavior theoretical models with a culturally specific intervention. Evaluation of the program's success will include analysis of preintervention and post-intervention surveys to determine increases in knowledge and changes in behavior in an intervention group versus a comparison group.
A guide to the common edible and dye plants of the Austin, Texas area
Creators: name: Pannill, Mary Tudor, 1955-
Publisher: name: The University of Texas at Austin
Year: 1983
Subjects: subject: Edible plants
subject: Dye plants
subject: Austin
subject: Texas
subject: Plant identification
subject: Austin plants
subject: Plants, Edible--Texas--Austin
subject: Dye plants--Texas--Austin
subject: Plants, Edible--Texas--Austin--Identification
subject: Dye plants--Texas--Austin--Identification

description: The purpose of this report is to educate people about the native and naturalized plants in the Austin area that can be used either as food or as a source of natural dyes. An illustration of each plant is included to aid in correct identification, along with a general description of the plant and its usual habitat. Uses for each identified plant are outlined in the form of simple food and dye recipes. Through the use of this report, people will have the opportunity to learn the identifying characteristics of many plants in their communities, as well as some specific practical uses for these plants. Studying them can lead to exploration of a wide variety of habitats, from the unique natural areas of Austin to each individual's backyard. These experiences will hopefully lead to a more serious involvement in the preservation of plants and the habitats vital for their survival.... In recent years, Austin has experienced a tremendous population increase, and with this growth has come the destruction of many unique natural areas in and around the city. Efforts to preserve remaining undeveloped sections are often met with disinterest on the part of the general public. People will try hardest to protect that which has meaning for them; something of personal interest. This interest must be developed in the general public to increase their concern for the continuing destruction of native habitat. The activities in this report are designed to give people specific ways to learn first-hand about a plant's practical uses. Plants may be gathered and taken home to become part of the next meal or to produce beautiful colors for weaving or embroidery. This sort of personal experience may prove to be more powerful in developing a conservation awareness than information gained through other sources, and conservation awareness is of particular importance in Austin where replacement of woods with pavement is far too familiar a sight
title: Motion artifacts on breast MRI: correlation with breast size and side of the injection
Creators: name: Carbonaro, Luca
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Breast
subject: MR
subject: Diagnostic procedure
subject: Artifacts

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Dynamic contrast-enhanced breast magnetic resonance imaging (MRI) is a high sensitive technique for evaluating breast lesions compared to mammography or ultrasound and it is used for selected indications [1]. In breast MRI, diagnosis is based on the...
USIA Poll # 1985-I85041: Narcotics Traffic, Central America
Creators: name: USIA
Publisher: name: Roper Center for Public Opinion Research
Year: 2009

description: Democracy (2); economic situation of the country (1); most important problem in the country (2); international problems (3); opinion about other countries (10); foreign debt (8); problems with narcotics (13); armed conflict in El Salvador (7); military aid to El Salvador (3); armed conflict in Nicaragua (5); military aid to Nicaragua (5); military aid from the United Stated (1); Soviet Union in Central America (2); Contadora countries (1); political identification (1)
Density-Matching for Turbomachinery Optimization Under Uncertainty
Creators: name: Seshadri, Pranay
name: Parks, Geoffrey
name: Shahpar, Shahrokh
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: A monotonic, non-kernel density variant of the density-matching technique for optimization under uncertainty is developed. The approach is suited for turbomachinery problems which, by and large, tend to exhibit monotonic variations in the circumferentially and radially mass-averaged quantities--such as pressure ratio, efficiency and capacity--with common aleatory turbomachinery uncertainties. The method is successfully applied to de-sensitize the effect of an uncertainty in rear-seal leakage flows on the fan stage of a modern jet engine.
description: 9 pages
Moire Potential, Lattice Relaxation and Layer Polarization in Marginally Twisted MoS2 Bilayers
Creators: name: Tilak, Nikhil
name: Li, Guohong
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Andrei, Eva Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Artificially twisted heterostructures of semiconducting transition metal dichalcogenides (TMDs) offer unprecedented control over their electronic and optical properties via the spatial modulation of interlayer interactions and structural reconstruction. Here we study twisted MoS2 bilayers in a wide range of twist angles near 0° using Scanning Tunneling Microscopy/Spectroscopy. We investigate the twist angle-dependence of the moiré pattern which is dominated by lattice reconstruction for small angles (<2°) leading to large triangular domains with rhombohedral stacking. Local spectroscopy measurements reveal a large moiré-potential strength of 100-200 meV for angles <3°. In reconstructed regions we see a bias-dependent asymmetry between neighboring triangular domains which we relate to the vertical polarization which is intrinsic to rhombohedral stacked TMDs. This viewpoint is urther supported by spectroscopy maps and ambient Piezoresponse measurements. Our results provide a microscopic perspective on this new class of interfacial ferroelectrics and can offer clues for designing novel heterostructures which harness this effect.
description: 34 pages and 10 figures
Global Cardiovascular Disease Risk Scores: A Systematic Review of the Literature and Study of the Effect of Risk Scores on Physician Adherence to Guidelines for the Primary Prevention of Cardiovascular Disease
Creators: name: Crespo, Eric Michael, M.D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Several major guidelines and organizations now advocate routine assessment of cardiovascular risk using Framingham-derived coronary heart disease (CHD) risk scores. Yet there is relatively little data on whether the routine use of such assessments translates into improved clinical outcomes. In particular, little is known about how knowledge of a patient's calculated 10-year CHD risk affects a physician's perception of the patient's risk and whether that in turn translates into improved adherence to published guidelines for the primary prevention of CHD. This paper is organized into three major sections: First, a thorough review of the theoretical benefits of global CHD risk calculation is presented. Following this is a systematic review of the literature. supporting the efficacy of incorporating Framingham-derived global risk scores into routine clinical practice. Lastly we present the methods and preliminary results of a study designed to determine whether physicians make better CHD prevention decisions when they interpret a patient's risk factor information in the context of a calculated 10-year risk of CHD than when they use the risk factor information alone.
Medium-Nuclearity Mixed-Metal Cluster Chemistry
Creators: name: Fu, Junhong
Publisher: name: Canberra, ACT : The Australian National University
Year: 2016
Subjects: Crystal structures
Mixed-metal
Cluster
Carbonyl
Cyclopentadienyl
Rhodium
Iridium
Molybdenum
Tungsten
Phosphine
Alkyne
Electrochemistry

description: The thesis is comprised of nine scientific articles and is preceded by an overview that contextualises all of publications. Mixed-metal clusters of group 6 and 9 have been of longstanding interest. The polar metal-metal bonds in these clusters exhibit great potential for substrate activation, and the widely disparate metals could increase cluster reactivity. Our previous studies of group 6 and 9 mixed-metal clusters have been mainly concentrated on low-nuclearity tetranuclear molybdenum/tungsten-iridium clusters, including the study of their structure, fluxionality, reactivity, electrochemistry, spectroelectrochemistry and optical properties. The thesis project herein mainly focuses on the synthesis of medium-nuclearity clusters of group 6 and 9. The first part of this body of work is concerned with the synthesis of medium-nuclearity molybdenum/tungsten-iridium clusters. Publication 1 details the synthesis of pentanuclear clusters by core expansion of tetranuclear molybdenum/tungsten-iridium clusters with capping reagents tetramethylcyclopentadienyl iridium dicarbonyl and pentamethylcyclopentadienyl iridium dicarbonyl. Publication 2 describes phosphine, isocyanide, and alkyne reactivity at several pentanuclear molybdenum/tungsten-iridium clusters that are reported in Publication 1.Three structurally characterized medium-nuclearity molybdenum-iridium clusters are presented in Publication 3. The second part of the thesis includes the synthesis of medium-nuclearity molybdenum/tungsten-rhodium-iridium clusters by core expansion reactions of tetranuclear molybdenum/tungsten-iridium clusters with capping reagents tetramethylcyclopentadienyl rhodium dicarbonyl and pentamethylcyclopentadienyl rhodium dicarbonyl. Publication 4 delineates a dynamic permutational isomerism in a pentanuclear ditungsten-rhodium-diiridium closo-cluster, together with the proposed mechanism and studies of the chemical and physical properties of the permutational isomers. Publications 5 and 6 detail the syntheses of penta- and hexa-nuclear molybdenum/tungsten-rhodium-iridium clusters by core expansion of tetranuclear molybdenum/tungsten-iridium clusters with the rhodium capping reagents, and phosphine and alkyne chemistry of the pentanuclear clusters. Publication 7 demonstrates the synthesis and structural studies of a hexanuclear trimolybdenum-triiridium cluster and a heptanuclear trimolybdenum-rhodium-triiridium cluster. In addition, Publication 8 describes alkyne chemistry at a phosphine-substituted cluster and explores the impact of phosphine ligation to dimolybdenum-diiridium on optical limiting properties. Finally, Publication 9 reports a four-valence-electron-deficient butterfly tetrairidium cluster and a heptairidium cluster, together with theoretical studies of the tetrairidium cluster.
title: MRI-guided vacuum-assisted breast biopsy performed at 3 Tesla with a 8-gauge needle using computer-assisted MRI-guidance
Creators: name: Baglio, Ilaria
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Breast
subject: MR
subject: Biopsy
subject: Vacuum assisted biopsy

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To describe the experience of magnetic resonance imaging (MRI)-guided vacuum assisted breast biopsy with a 8-gauge needle for diagnosis of suspicious breast lesions detectable at 3.0 Tesla using computer-assisted MRI-guidance and to compare results...
British Gallup Poll CQ 986
Creators: name: Social Surveys (Gallup Poll) Limited
Publisher: name: Roper Center for Public Opinion Research
Year: 2013

description: Approval of government's record (1); satisfaction with Mrs. Margaret Thatcher as Prime Minister (1); Mr. Neil Kinnock as leader of the Labor Party (1); Mr. David Steel as leader of the Liberal party (1); Dr. David Owen as leader of the Social Democratic Party (1); voting in General Election (4).
Quantum transport in driven systems with vibrations: Floquet nonequilibrium Green's functions and the GD approximation
Creators: name: Honeychurch, Thomas D.
name: Kosov, Daniel S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effects of alternating voltage on nonequilibrium quantum systems with localised phonon modes. Nonequilibrium Green's functions are utilised, with electron-phonon coupling being considered with the $GD$ approximation (self-consistent Born approximation). Using a Floquet approach, we assume periodicity of the dynamics. This approach allows us to investigate the influence of the driven electronic component on the nonequilibrium occupation of the vibrations. It was found that signatures of inelastic transport gained photon-assisted peaks. A simplistic model was proposed and found to be in good agreement with the full model in certain parameter ranges. Moreover, it was found that driving the alternating current at resonance with vibrational frequencies caused an increase in phonon occupation.
description: 11 pages, 4 figures, 15 sub-figures
title: CT-guided high-dose-rate brachytherapy (CT-HDRBT) of unresectable hepatocellular carcinoma (HCC)
Creators: name: Collettini, Federico
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Interventional non-vascular
subject: CT
subject: Ablation procedures

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Management of unresectable HCC remains challanging. The aim of the present study was to evaluate the clinical outcome of CT-guided high-dose-rate brachytherapy (CT-HDRBT) in patients with unresectable...
Flowering of Pinus caribaea var. hondurensis Barr. and Golf. in Northern Australia
Creators: name: Roberts, R. J.
Publisher: name: The Australian National University
Year: 1977
Subjects: Pinus caribaea
Australia,Northern
Flowering
Pollen
Seeds
Viability

description: Observations were made on the flowering of Pinus cavibaea var. hondurensis Barr, and Golf, covering the formation of floral buds to the pollination of conelets at four locations in Northern Australia: Howard Springs and Snake Bay near Darwin and Cardwell and Byfield in Queensland. Times of pollen fly and conelet receptivity varied at each location and the two types of flowering appeared to be out of phase at Byfield and Howard Springs and coincident at Cardwell and Snake Bay, To determine the effectiveness of pollination of conelets a new technique was devised for this study and from this it was shown that the amount of pollen arriving in individual conelets depends on the time that the cones become receptive relative to the peak period of pollen shed. Thus potential of seed production would appear to be greatestat Cardwell and Snake Bay. The intensity of pollen fly was similar at all locations however conelet production appeared most intense at Cardwell. Variations in seed and pollen viability between clones were significant, however there was no correlation between pollen viability and seed viability.
USIA Poll # 1996-I96042: Haiti/Democracy/Election/Privatization
Creators: name: USIA
Publisher: name: Roper Center for Public Opinion Research
Year: 2009

description: Listening to the radio (1); station listened to most frequently (3); direction of country (3); problems facing Haiti (2); public security (1); recent crime/violence victim (1); economic situation (4); money for necessities (1); government economic reformation for foreign aid (2); privatization (5); privatizing specific enterprises (5); responsibility of rebuilding economy (1); opinion of certain statements (6); democracy (1); meaning of democracy (1); Democratic Haiti (4); guaranteeing specific rights (5); situations in Haiti (5); obligations of democracy (1); educated about democracy (1); voter participation (3); giving up political freedom (1); opinion of certain organizations (10); UN peacekeeping force (5); national police after UN Peacekeeping force leaves (1); danger of people with weapons (1); reconciliation between de facto government and current government (2); progress in judicial system (3); opinion of armed groups (2); party affiliation (1); President Preval job performance (1); Preval vs. Aristide (8); opinion of local and international leaders (10); President Aristide involvement (2); foreign radio (12); VOA broadcasts (1).
GEO Poll: National Pre-election Survey 4, May, 1994
Creators: name: Gabinete De Estudios De Opinion (GEO)
Publisher: name: Roper Center for Public Opinion Research
Year: 1995

description: Political values(9); media(5); political information(6); national situation(11); political preferences(8); political parties(3); presidential candidate's debate(6); the electoral process(12); demographics(8).
title: Evaluation of the degradation of the selected projectile, commissural and association white matter tracts in patients with multiple sclerosis using diffusion tensor MR imaging
Creators: name: Banaszek, Anna
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Neuroradiology brain
subject: MR-Diffusion/Perfusion
subject: Diagnostic procedure
subject: Tissue characterisation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Magnetic resonance imaging (MRI) is the imaging technique of choice in establishing the diagnosis of multiple sclerosis (MS) as well as in disease monitoring. However, it has been proven, that white matter (WM) of the brain is often damaged in...
ABC News/Washington Post Poll: 2002 Congressional Elections
Creators: name: ABC News
name: Washington Post
Publisher: name: Roper Center for Public Opinion Research
Year: 2002

description: George W. Bush job performance (1); direction of country (1); George W. Bush handling of issues (8); Congress job performance (1); House of Representatives job performance (1); 2002 elections (4); factors in voting decisions (12); government coping with national problems (2); political parties handling important issues (11); U.S. campaign against terrorism (1); economy (3); party control of Congress (1); prescription drugs for seniors (1); Bush time spent on issues (3); most important problem facing nation (2); military action against Iraq (5); U.N. weapons inspectors in Iraq (2); more/less likely to re-elect senator who opposes military action in Iraq (5); Bush Administration using situation with Iraq to help Republicans in elections (2); Proud to be an American (1).
title: Diffusion tensor and magnetic resonance perfusion imaging in patients with recurrent brain neoplasm versus treatment-related injury
Creators: name: Maly Sundgren, Pia
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Neuroradiology brain
subject: CNS
subject: MR-Diffusion/Perfusion
subject: MR
subject: Surgery
subject: Biopsy
subject: Radiation therapy / Oncology
subject: Cancer
subject: Neoplasia
subject: Multidisciplinary cancer care

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Conventional MRI is not reliable in distinguishing radiation necrosis from recurrent brain neoplasm in patients with brain tumors previously treated with radiation therapy and surgery 1 . Stereotactic biopsy remains the most reliable method for...
Square-free graphs are multiplicative
Creators: name: Wrochna, Marcin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C60 (Primary), 05C15, 55U10 (Secondary)

description: A graph K is square-free if it contains no four-cycle as a subgraph. A graph K is multiplicative if GxH -> K implies G -> K or H -> K, for all graphs G,H. Here GxH is the tensor (or categorical) graph product and G -> K denotes the existence of a graph homomorphism from G to K. Hedetniemi's conjecture states that all cliques K_n are multiplicative. However, the only non-trivial graphs known to be multiplicative are K_3, odd cycles, and still more generally, circular cliques $K_{p/q}$ with 2 <= p/q < 4. We make no progress for cliques, but show that all square-free graphs are multiplicative. In particular, this gives the first multiplicative graphs of chromatic number higher than 4. Generalizing, in terms of the box complex, the topological insight behind existing proofs for odd cycles, we also give a different proof for circular cliques.
description: 22 pages, 5 figures. Only minor changes. Accepted for publication in JCTb
Structural Evolution and Optoelectronic Applications of Multilayer Silicene
Creators: name: Guo, Zhi-Xin
name: Zhang, Yue-Yu
name: Xiang, Hongjun
name: Gong, Xin-Gao
name: Oshiyama, Atsushi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Despite the recent progress on two-dimensional multilayer materials (2DMM) with weak interlayer interactions, the investigation on 2DMM with strong interlayer interactions is far from its sufficiency. Here we report on first-principles calculations that clarify the structural evolution and optoelectronic properties of such a 2DMM, multilayer silicene. With our newly developed global optimization algorithm, we discover the existence of rich dynamically stable multilayer silicene phases, the stability of which is closely related to the extent of sp3 hybridization that can be evaluated by the average bonds and effective bond angles. The stable Si(111) surface structures are obtained when the silicene thickness gets up to four, showing the critical thickness for the structural evolution. We also find that the multilayer silicene with pi-bonded surfaces present outstanding optoelectronic properties for the solar cells and optical fiber communications due to the incorporation of sp2-type bonds in the sp3-type bonds dominated system. This study is helpful to complete the picture of structure and related property evolution of 2DMM with strong interlayer interactions.
description: 4 figures
The large coordination number expansion of a lattice Bose gas at finite temperature
Creators: name: Navez, Patrick
name: Queisser, Friedemann
name: Schützhold, Ralf
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The expansion of the partition function for large coordination number $Z$ is a long standing method and has formerly been used to describe the Ising model at finite temperatures. We extend this approach and study the interacting Bose gas at finite temperatures. An analytical expression for the free energy is derived which is valid for weakly interacting and strongly interacting bosons. The transition line which separates the superfluid phase from Mott insulating/normal gas phase is shown for fillings $\langle\hat n\rangle=1$ and $\langle\hat n\rangle=2$. For unit filling, our findings agree qualitatively with Quantum Monte-Carlo results. Contrary to the well-known mean-field result, the shift of the critical temperature in the weakly interacting regime is apparent.
description: 6 pages, 5 figures (in press in Phys.Rev. A)
title: Comparison of the 320-row detector perfusion CT tomography data in patients with adenocarcinoma and insulinoma in pancreas
Creators: name: Mukhamatullina, Elvira
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Pancreas
subject: Arteries / Aorta
subject: Cardiac
subject: CT-Angiography
subject: Computer Applications-Detection, diagnosis
subject: Computer Applications-3D

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To analyze CT perfusion of adenocarcinoma and insulinoma and pancreatic parenchyma outside the...
ABC News/Washington Post Poll: Iraq/United Nations/North Korea/Space Program
Creators: name: ABC News
name: Washington Post
Publisher: name: Roper Center for Public Opinion Research
Year: 2003

description: George W. Bush job performance (6); Direction of country (1); North Korea/Iraq poses greater threat to US (1); Economy (1); Worry about current situations (3); Favor/Oppose military action in Iraq (3); Enough evidence for military action in Iraq (5); UN weapons inspectors (2); More important for US to act quickly in Iraq/gain international support first (1); Chance that diplomacy and negotiations can solve Iraq/North Korea problem (2); Chance of changing mind regarding attacking Iraq (1); US should/shouldn't work to rebuild and stabilize Iraq after war (2); Space program brought enough benefits to justify its costs (1); Space Shuttle Columbia (2).
Identifying Success and Sustainability in Public Health Programs: What are Key Elements in Ensuring a Public Health Program is Successful and Sustainable?
Creators: name: Addison, Dolores
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Public health interventions focusing on disease prevention and health promotion are prevalent in the U.S., and are supported by public, non-profit, and private organizations. Primary prevention programs typically lack resources that offer guidelines on developing successful and sustainable programs. In more recent years, research on attaining success and sustainability in public health programs has gained more attention. The goal of this paper is to identify common variables among public health interventions that resulted in successful outcomes and sustainability beyond initial funding, and identify a definition of success in public health programs. A literature review of the current research on sustainability in public health programs, evidence of successful implementation of public health programs, and assessments of past public health interventions and their public health impact will be performed to achieve this. Keywords: Successful public health programs; Sustainability in Public Health
Gallup Poll # 1239G
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 1984

description: Amount of thought given to November elections; number of times voted in precinct/district; voting place; voter registration; year registered; place of previous registration; level of interest in politics; frequency of voting; Mondale/Ferraro vs. Reagan/Bush in 1984; effect of Ferraro on voting for Democratic ticket; likelihood of voting in November election; satisfaction/dissatisfaction with U.S. in general; Reagan's job performance; Reagan's handling of: the economy, the budget deficit, unemployment, foreign policy, the Soviet Union, Central American situation, the poor, minority groups' civil rights; political affiliation; vote in 1980 Presidential election; likelihood of Reagan's being elected; concern over election outcome; main source of news about national/international events; preferred Democratic Presidential candidate; first/second/third most important issues in presidential campaign; rating of: George Bush, Jimmy Carter, Geraldine Ferraro, Gerald Ford, Gary Hart, Jesse Jackson, Walter Mondale, Richard Nixon, Ronald Reagan; voting as the only way to have say in government, politics; complexity of government; public officials' concern for the public; Congressmen's contact with the people parties' interest only in votes; spend more/cut back on defense/government spending; job preference to blacks due to past discrimination; old-fashioned vs. liberal attitude; effect on vote of well-qualified black presidential candidate; vote for qualified woman for President/Congress/Governor/Mayor/ top city Official; better/worse for country if more women held political office; phrases which describe: President Reagan, Walter Mondale, Jesse Jackson; political active groups which have too much/too little influence over national policies and programs; reason for increased political influence of blacks; blacks as a separate political group vs. individuals in existing parties; single vs. many leaders to speak for blacks; Jackson as best representative of blacks vs. one of many; Jackson's effect on campaign; position/policies of Democratic party; effect of Jackson endorsement of Mondale-Ferraro on likelihood of voting in November election; fairness of press coverage of Jackson; lack's situation today vs. five years ago; family financial situation to day vs. four years ago; contact with representative of presidential candidates in last six months; increase/decrease of religion's influence; religion as an answer to today's problems.
Los Angeles Times Poll: California Survey Brown vs., Younger/ Runoff Props on ballot
Creators: name: Los Angeles Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2019

description: Impression of Jimmy Carter (1); vote in Governor election today (1); impression of Proposition 13 (1); Proposition 13 cuts in local services (1); Republican nominee for President (1); tax giving least for amount being taxed (1); vote for Proposition 5 (1); vote in 1976 Presidential election (1); impression of California State Legislature (1); Democrat vs. Republican vote (1); vote for Proposition 6 (1); importance of experience/new ideas in political candidate (1); feelings about voting (1); Jimmy Carter job performance (1); state of the economy (1); impression of Jerry Brown (1); impression of Evelle Younger (1); difference between Jerry Brown and Evelle Younger (1); likeliness of voting for Governor (1); importance of work vs. personal satisfaction (1); Democratic Presidential candidate (1); vote on Proposition 7 (1); government officials carrying out Proposition 13 (1); vote for California Supreme Court Chief Justice (1); Jerry Brown vs. Evelle Younger (21); vote for Lieutenant Governor (1); vote for Attorney General (1); vote for State Controller (1); vote for Treasurer (1); vote for Secretary (1).
Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $ν$BDX-DRIFT Detector
Creators: name: Sierra, D. Aristizabal
name: Barrow, J. L.
name: Dutta, B.
name: Kim, D.
name: Snowden-Ifft, D.
name: Strigari, L.
name: Wood, M. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $ν$BDX-DRIFT collaboration seeks to detect low-energy nuclear recoils from CE$ν$NS or BSM interactions at FNAL. Backgrounds due to rock neutrons are an important concern. We present a~\texttt{GENIE} and~\texttt{GEANT4} based model to estimate backgrounds from rock neutrons produced in neutrino-nucleus interactions within the rock walls surrounding the underground halls. This model was bench-marked against the $2009$ COUPP experiment performed in the MINOS hall in the NuMI neutrino beam, and agreement is found between experimental results and the modeled result to within $30\%$. Working from this validated model, a similar two-stage simulation was performed to estimate recoil backgrounds in the $ν$BDX-DRIFT detector across several beamlines. In the first stage utilizing~\texttt{GEANT4}, neutrons were tallied exiting the walls of a rectangular underground hall utilizing four different neutrino beam configurations. These results are presented for use by other underground experiments requiring estimations of their rock neutron backgrounds. For $ν$BDX-DRIFT, the second stage propagated neutrons from the walls and recorded energy deposited within a scintillator veto surrounding the detector and nuclear recoils within the detector's fiducial volume. The directional signal from the $ν$BDX-DRIFT detector allows additional background subtraction. A sample calculation of a $10\,$m$^3\cdot\,$yr exposure to the NuMI Low Energy (LE) beam configuration shows a CE$ν$NS signal-to-noise ratio of $\sim$2.5.
description: Accepted by PRD. Covered by SCOAP
title: Comparison of US and MR measurement of fetal biometrics at 28-32 weeks with a real-time MR sequence
Creators: name: Hilliard, Nicholas
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Foetal imaging
subject: MR physics
subject: MR
subject: Comparative studies

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Quantification of standard elements of fetal biometry is important in the routine ultrasound assessment of fetal growth and development. Ultrasound based nomograms for values such as head and abdominal circumference (HC, AC), biparietal diameter...
Los Angeles Times Poll: California Survey Runoff Prop on ballot/ Gubernatorial and other state offices
Creators: name: Los Angeles Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2019

description: Jimmy Carter job performance (1); Gubernatorial preferences (6); financial situation (2); proposition 5 (2); partisan opinions and preferences (2); Brown v. Younger (1); smoker? (1); voting, opinions and participation (2); government and minority groups (1); proposition 6 (2); impact of government (1); Jerry Brown (1); Evelle Younger (1); proposition 7 (1); state office candidates (6); Mervyn Dymally (1); Mike Curb (1); religious preferences (1).
Computing partial traces and reduced density matrices
Creators: name: Maziero, Jonas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Taking partial traces for computing reduced density matrices, or related functions, is a ubiquitous procedure in the quantum mechanics of composite systems. In this article, we present a thorough description of this function and analyze the number of elementary operations (ops) needed, under some possible alternative implementations, to compute it on a classical computer. As we notice, it is worthwhile doing some analytical developments in order to avoid making null multiplications and sums, what can considerably reduce the ops. For instance, for a bipartite system $\mathcal{H}_{a}\otimes\mathcal{H}_{b}$ with dimensions $d_{a}=\dim\mathcal{H}_{a}$ and $d_{b}=\dim\mathcal{H}_{b}$ and for $d_{a},d_{b}\gg1$, while a direct use of partial trace definition applied to $\mathcal{H}_{b}$ requires $\mathcal{O}(d_{a}^{6}d_{b}^{6})$ ops, its optimized implementation entails $\mathcal{O}(d_{a}^{2}d_{b})$ ops. In the sequence, we regard the computation of partial traces for general multipartite systems and describe Fortran code provided to implement it numerically. We also consider the calculation of reduced density matrices via Bloch's parametrization with generalized Gell Mann's matrices.
description: The code can be accessed in https://github.com/jonasmaziero/LibForQ
title: Effect of intravenous contrast medium administration on prostate diffusion-weighted imaging
Creators: name: Bae, Jungmin
Publisher: name: European Congress of Radiology
Year: 2015
Subjects: subject: Genital / Reproductive system male
subject: Pelvis
subject: MR
subject: MR-Diffusion/Perfusion
subject: MR-Functional imaging
subject: Contrast agent-intravenous
subject: Observer performance
subject: Biological effects
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: With advances in technology and growing reader experience, prostate multiparametric magnetic resonance imaging (mp-MRI) that combines anatomic T2-weighted (T2WI) with functional imaging techniques including diffusion-weighted imaging (DWI) and...
Thermodynamic and electron-transport properties of Ca3Ru2O7 from first-principles phonon calculations and Boltzmann transport theory
Creators: name: Wang, Yi
name: Xiong, Yihuang
name: Yang, Tiannan
name: Yuan, Yakun
name: Shang, Shunli
name: Liu, Zi-Kui
name: Gopalan, Venkatraman
name: Dabo, Ismaila
name: Chen, Long-Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This work demonstrates a first-principles-based approach to obtaining finite temperature thermal and electronic transport properties which can be employed to model and understand mesoscale structural evolution during electronic, magnetic, and structural phase transitions. A computationally tractable model was introduced to estimate the temperature dependence of the electron relaxation time. The model is applied to Ca3Ru2O7 with a focus on understanding its electrical resistivity across the electronic phase transition at 48 K. A quasiharmonic phonon approach to the lattice vibrations was employed to account for thermal expansion while the Boltzmann transport theory including spin-orbit coupling was used to calculate the electron-transport properties, including the temperature dependence of electrical conductivity.
description: 4 figures
A note on 2-dimensional Finsler manifold
Creators: name: Faghfouri, Morteza
name: Hosseinoghli, Rahim
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C60, 53C25

description: We solve the following problem for $n=2:$ Is any n-dimensional Finsler manifold $(M, F)$ with a function $f$ which is nonconstant and smooth on $M$ satisfying $ \dfrac{\partial g^{ij}}{\partial y^k}\dfrac{\partial f}{\partial x^i}=0, $ a Riemannian manifold? The problem for $n>2$ remains open.
description: arXiv admin note: text overlap with arXiv:1110.6826 by other authors
Spin dynamics near a putative antiferromagnetic quantum critical point in Cu substituted BaFe$_2$As$_2$ and its relation to high-temperature superconductivity
Creators: name: Kim, M. G.
name: Wang, M.
name: Tucker, G. S.
name: Valdivia, P. N.
name: Abernathy, D. L.
name: Chi, Songxue
name: Christianson, A. D.
name: Aczel, A. A.
name: Hong, T.
name: Heitmann, T. W.
name: Ran, S.
name: Canfield, P. C.
name: Bourret-Courchesne, E. D.
name: Kreyssig, A.
name: Lee, D. H.
name: Goldman, A. I.
name: McQueeney, R. J.
name: Birgeneau, R. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present the results of elastic and inelastic neutron scattering measurements on non-superconducting Ba(Fe${_{0.957}}$Cu${_{0.043}}$)${_2}$As${_2}$, a composition close to a quantum critical point between AFM ordered and paramagnetic phases. By comparing these results with the spin fluctuations in the low Cu composition as well as the parent compound BaFe$_2$As$_2$ and superconducting Ba(Fe$_{1-x}$Ni$_x$)$_2$As$_2$ compounds, we demonstrate that paramagnon-like spin fluctuations are evident in the antiferromagnetically ordered state of Ba(Fe$_{0.957}$Cu$_{0.043}$)$_2$As$_2$, which is distinct from the AFM-like spin fluctuations in the superconducting compounds. Our observations suggest that Cu substitution decouples the interaction between quasiparticles and the spin fluctuations. We also show that the spin-spin correlation length, ${ξ(T)}$, increases rapidly as the temperature is lowered and find ${ω/T}$ scaling behavior, the hallmark of quantum criticality, at an antiferromagnetic quantum critical point.
description: 10 pages, 7 figures