cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis of Visual Encodings Effectiveness for Multivariate Data Similarity Identification
Creators: name: Mantovani, Mirko
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: Similarity detection seeks to identify items which resemble other items without being identical to them, sometimes over relatively large collections of multivariate items. Oftentimes, similarity cannot be defined computationally over a dataset, leading to a need for visual analysis. Such situations arise commonly in the analysis of ensemble simulations, of multiple computational models, of patient data repositories, or of geospatial data. In this research, we examine, in the context of similarity detection, the effectiveness of several visual encodings for multivariate data. We conducted a user study with 40 participants to measure similarity detection accuracy and response time under two conditions: moderate-scale (16 items) and large-scale (36 items). Our statistical analysis shows that there are significant differences in encoding performance, especially in the large-scale setting of the experiment. In all settings, we found that plain parallel coordinate plots are slower to read and lead to lower accuracy than juxtaposed star glyph approaches. When the number of items grows, the contour star plot (Kiviat diagram) outperforms other variations, including data lines star plots, and is therefore suitable for similarity identification when dealing with relatively large multivariate datasets.
On meager function spaces, network character and meager convergence in topological spaces
Creators: name: Banakh, Taras
name: Mykhaylyuk, Volodymyr
name: Zdomskyy, Lyubomyr
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics

description: For a non-isolated point $x$ of a topological space $X$ the network character $nw_χ(x)$ is the smallest cardinality of a family of infinite subsets of $X$ such that each neighborhood $O(x)$ of $x$ contains a set from the family. We prove that (1) each infinite compact Hausdorff space $X$ contains a non-isolated point $x$ with $nw_χ(x)=\aleph_0$; (2) for each point $x\in X$ with countable character there is an injective sequence in $X$ that $\F$-converges to $x$ for some meager filter $\F$ on $ω$; (3) if a functionally Hausdorff space $X$ contains an $\F$-convergent injective sequence for some meager filter $\F$, then for every $T_1$-space $Y$ that contains two non-empty open sets with disjoint closures, the function space $C_p(X,Y)$ is meager. Also we investigate properties of filters $\F$ admitting an injective $\F$-convergent sequence in $βω$.
description: 6 pages
Hong Kong's Expanding Agricultural Imports: Projections to 1980
Creators: name: Gill, Amjad H.
name: Gill, Amjad H.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: Hong Kong
subject: Projections
subject: Commodities
subject: Import
subject: Export
subject: Consumption

description: This report presents the principal commodity supply and demand projections for Hong Kong and the implications for its foreign trade, particularly with the United States. Of major importance are Hong Kong's expanding population, rising per capita income, limited farmland, and consequent declining self-sufficiency in agricultural production. Projections for 1980 made by the Economic Research Center of the Chinese University of Hong Kong indicate that net food import requirements will increase by 115 percent over the 1964 level.
description: This report summarizes the major findings of a comprehensive study, Long-Term Economic and Commodities Projections for Hong Kong 1970-1980, conducted under contract for the U.S. Department of Agriculture by a team of economists at the Economic Research Center of the Chinese University of Hong Kong under the leadership of Anthony M. Tang, director of the Center. The primary purpose of the study was to determine production, consumption, and import trends of agricultural products in Hong Kong, and to project import demand for 1970, 1975, and 1980. Findings in this study are those of the contractor and do not necessarily coincide with views of the Department. Some of the trends and analyses presented here are based on information from additional sources.
Multi-Angle Simulation of Flavor Evolution in the Neutrino Neutronization Burst From an O-Ne-Mg Core-Collapse Supernova
Creators: name: Cherry, John F.
name: Fuller, George M.
name: Carlson, Joe
name: Duan, Huaiyu
name: Qian, Yong-Zong
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report results of the first 3-by-3 "multi-angle" simulation of the evolution of neutrino flavor in the core collapse supernova environment. In particular, we follow neutrino flavor transformation in the neutronization neutrino burst of an O-Ne-Mg core collapse event. Though in a qualitative sense our results are consistent with those obtained in 3-by-3 single-angle simulations, at least in terms of neutrino mass hierarchy dependence, performing multi-angle calculations is found to reduce the adiabaticity of flavor evolution in the normal neutrino mass hierarchy, resulting in lower swap energies. Differences between single-angle and multi-angle results are largest for the normal neutrino mass hierarchy. Our simulations also show that current uncertainties in the measured mass-squared and mixing angle parameters translate into uncertainties in neutrino swap energies. Our results show that at low theta-13 it may be difficult to resolve the neutrino mass hierarchy using the O-Ne-Mg neutronization neutrino burst.
description: This version of the paper contains numerous edits that accommodate referees comments
A novel data augmentation technique to reduce the complexity of receiver based DSP in optical telecommunications
Creators: name: Neskorniuk, Vladislav
Publisher: name: Zenodo
Year: 2021
Subjects: machhine learning
telecommunications
data augmentation
digital signal processing
optical fiber

description: A data augmentation technique to improve performance and decrease complexity of the supervised learning of nonlinearity compensation algorithms is described. It is demonstrated both numericallyand experimentally that the augmentation may allow reducing the training dataset size up to 6 times while keeping the same post-compensation bit-error rate.
description: These presentation was given at Workshop on machine learning in optical communication systems (https://digicosme.cnrs.fr/workshop-on-machine-learning-in-optical-communication-systems/) at Digicosme/Gdr-ISIS.
Forestry Crane with Electrohydraulic Flow-on-Demand System
Creators: name: Scherer, Martin
name: Geimer, Marcus
name: Weiß, Björn
Publisher: name: Karlsruhe
Year: 2013

description: The major issue developing sophisticated hydraulic systems is to significantly improve the energy efficiency without sacrificing the ease of control and operability. The present paper illustrates the upgrade of a mobile forestry crane from a hydraulic-mechanical Load-Sensing system to an innovative electrohydraulical Flow-on-Demand system.
FoxO4 Controls sGCβ Transcription in Vascular Smooth Muscle
Creators: name: Galley, Joseph
name: Miller, Megan
name: Sanker, Subramaniam
name: Liu, Mingjun
name: Sharina, Iraida
name: Martin, Emil
name: Gomez, Delphine
name: Straub, Adam
Publisher: name: figshare
Year: 2022
Subjects: subject: Physiology
subject: FOS: Biological sciences

description: Supplementary Data - FoxO4 Controls sGCβ Transcription in Vascular Smooth Muscle
The use of iPTD engineered antifreeze proteins for cryopreservation of cells
Creators: name: Zhao, Han Qi
Publisher: name: University of British Columbia
Year: 2017

description: Antifreeze proteins from natural sources have been discovered to have cryoprotective function against freezing temperature, and have been tested for the application for cryopreservation of biological materials. However, none has been shown to match the effectiveness of current chemical cryoprotectants, such as dimethyl sulfoxide. One potential limitation with the application of antifreeze proteins is that they may only stay in the extracellular space around cells whereas chemical cryoprotectants can be penetrative. In this thesis project, we have designed, purified and explored the function of antifreeze proteins that were engineered with an intracellular delivery signal peptide, known as iPTD. We showed that iPTD-engineered antifreeze proteins had effective cell surface coverage within 30 minutes of incubation as shown by flow cytometry; however no intracellular protein delivery was observed under multiphoton microscopy. The plasma membrane was protected by iPTD-engineered antifreeze proteins during cryopreservation as seen in Calcein dye release assay, but cell recovery or proliferation was not observed after thawing. Given these properties of iPTD-engineered antifreeze proteins, we used them as red blood cell cryopreservation additives. By adding these modified antifreeze proteins, we were able to reduce the amount of glycerol (used for RBC cryopreservation) necessary to control freeze-induced hemolysis. Furthermore, the quality of thawed red blood cells is higher as protein addition resulted in high retention of intracellular ATP.
Interplay of quark and meson degrees of freedom in a near-threshold resonance: multi-channel case
Creators: name: Hanhart, C.
name: Kalashnikova, Yu. S.
name: Nefediev, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate the interplay of quark and meson degrees of freedom in a physical state representing a near-threshold resonance for the case of multiple continuum channels. The aim is to demonstrate the full complexity of near-threshold phenomena. It turns out that those are especially rich, if both quark and meson dynamics generate simultaneously weakly coupled near-threshold poles in the S-matrix. We study the properties of this scenario in detail, such as t-matrix and production amplitude zeros, as well as various effects of the continuum channels interplay.
description: LaTeX2e, 10 pages, version to appear in Eur.Phys.J.A
Risk Factors for the Development of Ocular Complications in Herpes Zoster Ophthalmicus
Creators: name: Ann-Marie Lobo-Chan
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: Purpose: The purpose of this study is to report the incidence of herpes zoster (HZ) and herpes zoster ophthalmicus (HZO) in a large urban hospital system and to determine risk factors that are associated with the development of ocular complications in HZO. A secondary objective is to report the frequency of shingles vaccination and any episodes of HZ reactivation following shingles vaccination in this population. Methods: A retrospective cohort study was performed on patients seen at the University of Illinois Hospital system from 2010-2015 with HZ and HZO identified by diagnosis code. Medical chart review of HZO patients seen within 1 year of diagnosis of disease was performed. Patients with any ocular complication at 6 months and 1 year time points were compared to patients without ocular complications. Multivariable logistic regression analysis was performed to determine factors associated with the development of ocular complications in HZO. Results: During the study period, 1365 patients had HZ with an incidence of 332 per 100,000; the mean age of onset was 52 years, 60% of patients were female and 38% were black. HZO with confirmed ocular involvement was seen in 122 (8.9%) patients. Of 93 patients with HZO included in the analysis, the mean age was 57.8 years, and patients were predominantly female (55.9%) and Caucasian (39.8%). Ocular complications developed in 25 (27%) patients; the most common complication was corneal scarring (24.7%). Female gender (8.9, 95%CI 2.27, 35.1) and stromal keratitis (9.69, 95% CI 2.66, 35.4) were associated with a higher odds of development of ocular complications. Shingles vaccination rates were low (0.4%) in this population during the study period, but only 4 (0.5%) patients developed reactivation of HZ following vaccination. Conclusions: HZ and HZO represent major public health issues. In HZO, female gender and stromal keratitis are strongly associated with development of ocular complications. Understanding risk factors for HZ/HZO can help to target populations for vaccination to prevent disease and long-term antiviral and anti-inflammatory therapy in those with disease.
Interbank Lending in a Generalized Walras Equilibrium
Creators: name: Joos, Dominik
Publisher: name: Karlsruhe
Year: 2013

description: We study a problem of maximizing expected utility of terminal wealth in a two-period market with various assets for a continuum of banks. Due to different liquidity levels, interbank markets arise. Interest rates are set by a Generalized Walras Equilibrium. We determine the banks' optimal behaviour in a general setting and derive conditions for the existence of an equilibirum. We show that the existence of interbank markets smoothes out
different liquidity levels.
Transition from plasma- to Kerr-driven laser filamentation
Creators: name: Béjot, Pierre
name: Hertz, Edouard
name: Kasparian, Jérôme
name: Lavorel, Bruno
name: Wolf, Jean-Pierre
name: Faucher, Olivier
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: While filaments are generally interpreted as a dynamic balance between Kerr focusing and plasma defocusing, the role of the higher-order Kerr effect (HOKE) is actively debated as a potentially dominant defocusing contribution to filament stabilization. In a pump-probe experiment supported by numerical simulations, we demonstrate the transition between two distinct filamentation regimes at 800\,nm. For long pulses (1.2 ps), the plasma substantially contributes to filamentation, while this contribution vanishes for short pulses (70 fs). These results confirm the occurrence, in adequate conditions, of filamentation driven by the HOKE rather than by plasma.
description: 6 pages, 4 figures. Accepted for publication in Physical Review Letters
Inovação e Empreendedorismo no Setor Público e relações com a Sociedade
Creators: name: Emmendoerfer, Magnus
Publisher: name: Zenodo
Year: 2022

description: Palestra realizada no VII Congresso de Administração
 Universidade Federal de Alagoas UFAL
 26 janeiro 2022 Via GoogleMeet
Small But Slow World: How Network Topology and Burstiness Slow Down Spreading
Creators: name: Karsai, M.
name: Kivelä, M.
name: Pan, R. K.
name: Kaski, K.
name: Kertész, J.
name: Barabási, A. -L.
name: Saramäki, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Communication networks show the small-world property of short paths, but the spreading dynamics in them turns out slow. We follow the time evolution of information propagation through communication networks by using the SI model with empirical data on contact sequences. We introduce null models where the sequences are randomly shuffled in different ways, enabling us to distinguish between the contributions of different impeding effects. The slowing down of spreading is found to be caused mostly by weight-topology correlations and the bursty activity patterns of individuals.
The Affluence-Technology Connection: Metrics, Analysis, and Implications for Sustainable Technology
Creators: name: Mulrow, John MS
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: The affluence-technology (A-T) connection is a reference to a popular framing of technology's role in bringing about environmental sustainability, as encapsulated by the IPAT equation (Impact = Population × Affluence × Technology). This thesis explores the A-T connection through the development and application of new metrics that reveal how technological attributes and consumption affluence influence and relate to each other. The work is focused on modern transportation systems in a United States context and includes a detailed examination of this system through three different measurement frameworks. Each of the presented studies points to mechanisms by which the A-T connection diminishes impact reductions from technological efforts typically viewed as “sustainable.” Increasing mode-speed reduces the solution space for the achievement of climate goals; expanding the speed-distance (i.e., sociotechnical) boundaries of personal transportation drives increased transportation activity; emerging transportation technologies succeed by claiming sociotechnical space traditionally occupied by the personal vehicle; and the efficiency benefits of fuel switching are diminished when full material-energy cycles are factored in. The metrics and mechanisms described in this thesis show that the affluence-technology connection can be quantitatively measured using a combination of public survey and technical data. The lesson for sustainable technology development and deployment is that this connection could be factored into the calculation of impact-reduction potential. Furthermore, factoring this connection in may serve to dampen such calculations. The thesis concludes with a discussion of this conundrum and a call for future research to clarify, calculate, and ultimately reframe the prospects for truly sustainable technology. Doing so will require a willingness to consider lower affluence outcomes and slower technological configurations.
Direct spreading measures of Laguerre polynomials
Creators: name: Sánchez-Moreno, P.
name: Manzano, D.
name: Dehesa, J. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The direct spreading measures of the Laguerre polynomials, which quantify the distribution of its Rakhmanov probability density along the positive real line in various complementary and qualitatively different ways, are investigated. These measures include the familiar root-mean-square or standard deviation and the information-theoretic lengths of Fisher, Renyi and Shannon types. The Fisher length is explicitly given. The Renyi length of order q (such that 2q is a natural number) is also found in terms of the polynomials parameters by means of two error-free computing approaches; one makes use of the Lauricella functions, which is based on the Srivastava-Niukkanen linearization relation of Laguerre polynomials, and another one which utilizes the multivariate Bell polynomials of Combinatorics. The Shannon length cannot be exactly calculated because of its logarithmic-functional form, but its asymptotics is provided and sharp bounds are obtained by use of an information-theoretic optimization procedure. Finally, all these spreading measures are mutually compared and computationally analyzed; in particular, it is found that the apparent quasi-linear relation between the Shannon length and the standard deviation becomes rigorously linear only asymptotically (i.e. for n>>1).
description: 15 pages, 5 figures, accepted in Journal of Computational and Applied Mathematics
Phytate Degradation, Transcellular Mineral Transporters, and Mineral Utilization by Two Strains of Laying Hens as Affected by Dietary Phosphorus and Calcium
Creators: name: Sommerfeld, Vera
name: Omotoso, Adewunmi
name: Oster, Michael
name: Reyer, Henry
name: Camarinha-Silva, Amélia
name: Hasselmann, Martin
name: Huber, Korinna
name: Rodehutscord, Markus
name: Ponsuksili, Siriluck
name: Seifert, Jana
name: Stefanski, Volker
name: Wimmers, Klaus
Publisher: name: figshare
Year: 2021
Subjects: subject: 70204 Animal Nutrition
subject: FOS: Animal and dairy science

description: Laying hens require less phosphorus (P) but markedly more calcium (Ca) in their diet than broilers. These differences may cause more distinct interactions with phytate degradation and utilization of minerals in laying hens than those in broilers. The objective of the study was to characterize intestinal phytate degradation, ileal transcript copy numbers of transcellular Ca and P transporters, and mineral utilization by two laying hen strains fed with standard or reduced levels of dietary Ca and P at the laying peak.
Dynamical constraints from field line topology in magnetic flux tubes
Creators: name: Yeates, A. R.
name: Hornig, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A topological constraint on the dynamics of a magnetic field in a flux tube arises from the fixed point indices of its field line mapping. This can explain unexpected behaviour in recent resistive-magnetohydrodynamic simulations of magnetic relaxation. Here we present the theory for a general periodic flux tube, representing, for example, a toroidal confinement device or a solar coronal loop. We show how an ideal dynamics on the side boundary of the tube implies that the sum of indices over all interior fixed points is invariant. This constraint applies to any continuous evolution inside the tube, which may be turbulent and/or dissipative. We also consider the analogous invariants obtained from periodic points (fixed points of the iterated mapping). Although there is a countably infinite family of invariants, we show that they lead to at most two independent dynamical constraints. The second constraint applies only in certain magnetic configurations. Several examples illustrate the theory.
description: 17 pages, 11 figures, accepted for publication by J. Phys. A: Math. Theor. (minor revisions)
Dilaton as the Higgs particle
Creators: name: Saadi, Hassan
Publisher: name: University of British Columbia
Year: 2017

description: This essay focuses on exploring dilatons as an alternate model to the Higgs mechanism. An introductory analysis to the Higgs mechanism, effective potential method, and dilatons is provided. Then, three different models are explored on how to obtain a light dilaton that emerges as a pseudo Goldstone boson because of the spontaneously broken approximate scale invariance. This light dilaton is shown to have properties that are, in general, similar to the Higgs boson with minor differences that can differentiate between the two models in collider experiments.
Angular Analysis of B->PhiK* Decays and Search for CP Violation at the Belle Experiment
Creators: name: Prim, Michael
Publisher: name: Karlsruhe
Year: 2013
Subjects: Angular Analysis
Belle
CP Violation

description: The thesis presents an angular analysis of B->PhiK* decays and search for CP violation at the Belle experiment. A partial wave analysis is used to separate individual K* components and perform a coherent amplitude analysis. Further, multivariate methods are applied to enrich the signal contribution. The thesis also presents methods to optimize numeric integrations in amplitude analysis and discusses methods to quantify correlations in multivariate data sets.
Geometric Symmetries in Superfluid Vortex Dynamics
Creators: name: Kozik, Evgeny
name: Svistunov, Boris
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Dynamics of quantized vortex lines in a superfluid feature symmetries associated with the geometric character of the complex-valued field, $w(z)=x(z)+iy(z)$, describing the instant shape of the line. Along with a natural set of Noether's constants of motion, which---apart from their rather specific expressions in terms of $w(z)$---are nothing but components of the total linear and angular momenta of the fluid, the geometric symmetry brings about crucial consequences for kinetics of distortion waves on the vortex lines---the Kelvin waves. It is the geometric symmetry that renders Kelvin-wave cascade local in the wavenumber space. Similar considerations apply to other systems with purely geometric degrees of freedom.
description: 4 REVTeX pages, minor stylistic changes, references to recent related preprints added
An Exploration of Climate Change, Socioecology, and Human Health in Managing Food-Energy-Water Impacts
Creators: name: Bozeman, Joe Frank
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: This dissertation shows performed research and development of U.S. food-energy-water (FEW) management using a holistic, sustainability approach. I address FEW management issues using social, environmental, and economic approaches anchored in the rigors of civil and environmental engineering methodology. Each chapter, excluding the introductory chapter (i.e., Chapter 1), aligns with one of the pillars of sustainability. Chapter 2 focuses on the environment pillar by investigating climate change adaptation and environmental degradation resulting from FEW activities. Here, I show that White food-consumption impacts affect water resources and emit greenhouse gas at the highest rates compared to their Black and Latinx counterparts in the U.S., whereas Blacks impact land the most. Chapter 3 is concerned with the economy pillar by exploring the interplay between food consumption and socioeconomic measures, and illustrates how these affect environmental quality. This chapter shows that although Whites spend the most dollars overall on food expenditures, they have the lowest food-consumption impact rates compared to their Black and Latinx counterparts. Chapter 4 is primarily concerned with the social pillar by investigating how food-consumption impacts interplay with human health. It shows that the U.S. does not meet EAT-Lancet global food consumption, nutritional and environmental health standards across racial/ethnic subgroups, and that shifting to meet these standards would decrease environmental impacts between 28.6% and 37.6%. Furthermore, this chapter shows that the vast majority of American food policy – at the federal level - is not socially-inclusive. Taken together, these works represent a holistic approach to investigating and developing solutions for FEW management as it relates to climate change, socioecology, and human health.
M5-Branes, D4-Branes and Quantum 5D super-Yang-Mills
Creators: name: Lambert, Neil
name: Papageorgakis, Constantinos
name: Schmidt-Sommerfeld, Maximilian
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit the relation of the six-dimensional (2,0) M5-brane Conformal Field Theory compactified on a circle to 5D maximally supersymmetric Yang-Mills Gauge Theory. We show that in the broken phase 5D super-Yang-Mills contains a spectrum of soliton states that can be identified with the complete Kaluza-Klein modes of an M2-brane ending on the M5-branes. This provides evidence that the (2,0) theory on a circle is equivalent to 5D super-Yang-Mills with no additional UV degrees of freedom, suggesting that the latter is in fact a well-defined quantum theory and possibly finite.
description: 16 pages, Latex; v2: typos corrected and references added; v3: expanded discussion of photon states and revised Higgs mechanism, conclusions unchanged
Geomorphometry 2021 Program and Conference Summary
Creators: name: Alvioli, Massimiliano
name: Marchesini, Ivan
name: Melelli, Laura
name: Guth, Peter
Publisher: name: Zenodo
Year: 2021
Subjects: geomorphometry

description: This contains the conference program for Geomorphometry 2021, hosted online from Perugia, Italy in September 2021. For most papers there are links to the conference papers, copies of the slides used in the presentations, and video recordings of the presentations. The awards for best paper are noted, and there is a summary of the conference.
Experimental investigation of formation and decomposition of roaldite in ammonia atmosphere at 300–700 °C and associated nitrogen isotope fractionations
Creators: Li, Long
Cartigny, Pierre
Li, Kan
Publisher: name: University of Alberta Library
Year: 2021

Roaldite (Fe4N) is one of the few nitride minerals found in meteorites. Their nitrogen (N) isotopic signatures carry important information for understanding the early N cycle in the proto-solar nebula. However, the lack of knowledge on the N isotopic effects from nitride formation to its survival from frictional heating during landing impedes the interpretation and application of N isotope compositions of nitride minerals in meteorites. Here, we carried out laboratory experiments under a recently proposed roaldite forming condition, i.e., NH3 (as starting N source) reacting with metallic Fe at medium temperatures. We observed Fe4N formation over a large range of temperatures from 300 °C to 700 °C. The formation of Fe4N was associated with equilibrium N isotope fractionations with αFe4N-NH3 values of 0.9907 (±0.0004) at 300 °C and 0.9936 (±0.0004) at 500 °C, respectively. In the experimental pressure conditions (initial PNH3 = 3.9–6.4 bar, PTotal < 8.3 bar), the formed Fe4N remained stable at 300 °C, but was unstable and quickly decomposed to Fe and N2 at 500 °C and 700 °C. The decomposition of Fe4N was associated with large kinetic isotope fractionations with αN2-Fe4N values of 0.9811 (±0.0009) at 500 °C and 0.9839 (±0.0011) at 700 °C, respectively. Our experimental results suggest that roaldite formed from NH3 can carry an isotopic signature very close to that of its source, but partial decomposition (if there is any) can easily shift its N isotope composition for several tens of per mil, and in extreme cases, to >300‰. Thus, great caution is needed when using N isotope composition of roaldite (and probably other nitride minerals as well) to trace source information.
title: Immeuble Barral, cathedrale  de Lodève
Creators: name: Pascale Sarazin - INRAP
name: Sorin, Sabine
name: CEPAM UMR 7264
Publisher: name: Archeovision
Year: 2017

description: Relevé 3D pour une étude du bâti
description: 5 fichiers pts
4 livrables PDF
Hyperfine, rotational, and vibrational structure of the triplet ground state of Rb molecules
Creators: name: Strauss, Christoph
name: Takekoshi, Tetsu
name: Lang, Florian
name: Winkler, Klaus
name: Grimm, Rudolf
name: Denschlag, Johannes Hecker
name: Tiemann, Eberhard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have performed high-resolution two-photon dark-state spectroscopy of an ultracold gas of Rb molecules in the triplet ground state at a magnetic field of about 1000 G. The vibrational ladder as well as the hyperfine and low-lying rotational structure is mapped out. Energy shifts in the spectrum are observed due to singlet-triplet mixing at binding energies as deep as a few hundred GHz x h. This information together with data from other sources is used to optimize the potentials of the triplet and singlet states in a coupled-channel model. We find that the hyperfine structure depends weakly on the vibrational level. This provides a possible explanation for inaccuracies in recent Feshbach resonance calculations.
Layout (Full-text) Jurnal Bereputasi Mengacu pada Principles of Transparency and Best Practice in Scholarly Publishing
Creators: name: Suyanto, Helmi
Publisher: name: Zenodo
Year: 2021
Subjects: layout
Relawan Jurnal Indonesia
publication ethic

description: Presentasi ini disampakan pada Webinar: Serba-Serbi Pengelolaan Jurnal dan Layout Artikel Jurnal Bereputasi Fakultas Bahasa dan Sastra, Universitas Negeri Padang, 26 September 2021.
Bisphosphonate Treatment Patterns and Risks of Skeletal Related Events in Multiple Myeloma
Creators: name: Jifang Zhou
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: This dissertation provides insights into how intravenous bisphosphonate therapies are being used in patients with multiple myeloma at the population level and informs decision-making about administration frequency of these drugs in different patients with varying risks for skeletal-related events. We further critically examined the performance of five commonly used recurrent event analyses techniques using multiple datasets generated with plasmode simulation. We compared the results on biases and variances of the treatment effects against the known simulated treatment effect in up to nine scenarios for recurrent event analyses in the presence of complex data structure typical for claims databases.
title: Eglise Saint Hermentaire
Creators: name: Sorin, Sabine
name: CEPAM UMR 7264
Publisher: name: Archeovision
Year: 2017

description: L'église Saint-Hermentaire de Draguignan est édifice du VIe siècle après J.- C. implanté sur le site d'une villa antique. Il a été classée au titre des monuments historiques en 2014 pour son intérêt historique et archéologique mais surtout la rareté d'un édifice rural de l'antiquité tardive conservé en élévation.
description: Jrc 3D, Focus 3D,OBJ
Diagnoses de quelques hybrides du genre Ophrys (Orchidaceae) du bassin méditerranéen occidental (4ème partie).
Creators: name: Romieg Soca
Publisher: name: Zenodo
Year: 2000
Subjects: Ophrys

description: Soca R., 2000. Diagnoses de quelques hybrides du genre Ophrys (Orchidaceae) du bassin méditerranéen occidental (4ème partie). Monde des Plantes 95(470): 12-15.
Magnetic fields during the early stages of massive star formation - I. Accretion and disk evolution
Creators: name: Seifried, D.
name: Banerjee, R.
name: Klessen, R. S.
name: Duffin, D.
name: Pudritz, R. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present simulations of collapsing 100 M_\sun mass cores in the context of massive star formation. The effect of variable initial rotational and magnetic energies on the formation of massive stars is studied in detail. We focus on accretion rates and on the question under which conditions massive Keplerian disks can form in the very early evolutionary stage of massive protostars. For this purpose, we perform 12 simulations with different initial conditions extending over a wide range in parameter space. The equations of magnetohydrodynamics (MHD) are solved under the assumption of ideal MHD. We find that the formation of Keplerian disks in the very early stages is suppressed for a mass-to-flux ratio normalised to the critical value μbelow 10, in agreement with a series of low-mass star formation simulations. This is caused by very efficient magnetic braking resulting in a nearly instantaneous removal of angular momentum from the disk. For weak magnetic fields, corresponding to μ> 10, large-scale, centrifugally supported disks build up with radii exceeding 100 AU. A stability analysis reveals that the disks are supported against gravitationally induced perturbations by the magnetic field and tend to form single stars rather than multiple objects. We find protostellar accretion rates of the order of a few 10^-4 M_\sun yr^-1 which, considering the large range covered by the initial conditions, vary only by a factor of ~ 3 between the different simulations. We attribute this fact to two competing effects of magnetic fields. On the one hand, magnetic braking enhances accretion by removing angular momentum from the disk thus lowering the centrifugal support against gravity. On the other hand, the combined effect of magnetic pressure and magnetic tension counteracts gravity by exerting an outward directed force on the gas in the disk thus reducing the accretion onto the protostars.
description: 22 pages, 17 figures, accepted for publication in MNRAS, updated to final version
Genetic Diversity and Maternal Ancestry of Liberian Country Chickens Indicated at the Hypervariable-1 Section of the Mitochondrial DNA D-loop
Creators: name: Omotoso, Adewunmi
name: Tor, Noah
name: Ajibike, Abdulhakeem B.
name: Oladejo, Opeyemi
name: Shems, Kilpatrick
name: Adebambo, Ayotunde O.
name: Topor, Wollor
name: Wamagi, Thomas I.
name: Collins, Nicolia K.
name: Ofori, Samuel A.
Publisher: name: figshare
Year: 2021
Subjects: subject: 70201 Animal Breeding
subject: FOS: Animal and dairy science
subject: 60302 Biogeography and Phylogeography
subject: FOS: Biological sciences

description: The vast majority of animal production in Africa, Liberia inclusive is in the hands of traditional operators based in the rural or countryside, upon which there is a general dearth of genetic information, especially at the molecular level regarding their origins and characterization. The study sought to evaluate the molecular genetic diversity and trace the evolutionary origins of the Liberian country chickens using the maternally inherited mitochondrial DNA as a profiling marker.
Optical orientation of a single Mn spin in a quantum dot: Role of carrier spin relaxation
Creators: name: Cywinski, Lukasz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In order to explain the recently observed phenomenon of optical orientation of a single Mn spin residing inside a quantum dot, a process of Mn spin relaxation with characteristic timescale of tens of nanoseconds had been invoked. We show that after taking into account the mixing of states of the exciton and the Mn spin (due to the sp-d exchange interaction), the observed Mn optical orientation time can be explained by invoking only the processes of carrier spin relaxation.
description: 6 pages, 3 figures
Genetic diversity and phylogeographic structure of West African village chickens based on a 920bp segment of the mtDNA D-loop.
Creators: name: Tor, Noah
name: Olowofeso, Olajide
name: Adebambo, Ayotunde O.
name: Wheto, Matthew
name: Sogunle, Olajide Mark
name: Ikeobi, Christian O.N.
name: Omotoso, Adewunmi
name: Ajibike, Abdulhakeem B.
name: Shems, Kilpatrick
name: Durosaro, ,Samuel
name: Mendy, Emmanuel W.
name: Oladejo, Opeyemi
name: Ubaka, Ifeanyi
Publisher: name: figshare
Year: 2021
Subjects: subject: 70201 Animal Breeding
subject: FOS: Animal and dairy science
subject: 60302 Biogeography and Phylogeography
subject: FOS: Biological sciences

description: The West African village chicken characterised by small body size, low productivity, disease tolerance and strong links to local traditions is spread extensively within the sub-region especially in the rural settings. However, not much is known about its genetic diversity and population structure. In this study, the maternal genetic diversity and population structure of these chicken populations were characterised using sequence analysis of a 920-bp fragment of the mitochondrial DNA D-loop region. Hence, this study.
Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
Creators: name: Unkn
Publisher: name: unkn
Year: 2021

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 47, 1891
The evaluation of a mobile device to measure ataxia with high altitude exposure
Creators: name: Boake, Elliott
Publisher: name: University of British Columbia
Year: 2017

description: To our knowledge, no study has used an assessment of ataxia and a finger-tapping task on a mobile device to monitor acclimatization to hypoxia. This research evaluated the utility of this tool in assessing human acclimatization to hypoxia while monitoring the development of acute mountain sickness (AMS). This study used a single-blinded repeated-measures randomized crossover design. Subjects experienced a familiarization trial at a simulated altitude of 2000m, a high altitude simulating 4200m and a sham condition simulating 250m. Measurements of AMS, pulse oxygen saturation and performance of the finger-tapping task were completed immediately prior to, and 5 minutes, 4 hours, and 12 hours following entrance to the chamber. Fifteen healthy male and female subjects were recruited form the Vancouver area. Subjects were between the ages of 19 and 25 years old. Subjects had not traveled to an altitude of 3000m or higher in the 3 months prior to testing. Subjects were excluded if they had any cardiovascular or pulmonary conditions. A repeated-measures ANOVA was performed to analyze if significant results were found for reaction time and accuracy of the finger-tapping task. Accuracy of the finger-tapping task worsened over the exposure to hypoxia, however, error rate and response time were not affected based on this simulated altitude alone. All other measures, including symptom questionnaires and pulse oxygen saturation suggest that these subjects had normal responses to altitude. Based on these findings, it appears that these finger-tapping tasks that focus on measures may be useful while monitoring acclimatization to hypoxia.
Morphogen Gradient Creation and Bio-modified Surfaces for Rebuilding a Stem Cell Microenvironment
Creators: name: Kim, Chorong
Publisher: name: Karlsruhe
Year: 2012

description: Recreation of a microenvironment where stem cells maintain pluripotency or initiate differentiation is crucial especially when they are used for therapeutic needs. In this thesis, to generate more in vivo like environments, the application of soluble factors such as morphogen gradients was realized by microfluidic system and cadherin-anchored artificial substrates were generated for the cellular contact to the microenvironment by atomic force microscope based nanografting.
Piecewise Flat Gravitational Waves
Creators: name: van de Meent, Maarten
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the continuum limit of the piecewise flat locally finite gravity model introduced by 't Hooft. In the linear weak field limit we find the energy--momentum tensor and metric perturbation of an arbitrary configuration of defects. The energy--momentum turns out to be restricted to satisfy certain conditions. The metric perturbation is mostly fixed by the energy--momentum except for its lightlike modes which reproduce linear gravitational waves, despite no such waves being present at the microscopic level.
description: Accepted for publication in Classical and Quantum gravity
DISTANCE LEARNING: LEGAL REGULATION
Creators: name: Pravdiuk, A.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2020
Subjects: Distance learning
legal regulation
distance education
information and communication technologies

description: The article examines current problems of legal regulation of distance learning in the educational system of Ukraine. The main normative legal documents that regulate legal relations in the field of distance learning are analyzed. Possible directions for improving a legal framework for the introduction of distance learning in the educational institutions of all levels are proposed.
Multiplicity and period distribution of Population II field stars in solar vicinity
Creators: name: Rastegaev, D. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: 85-02

description: We examine a sample of 223 F, G and early K metal-poor subdwarfs ([m/H] 0.2"/$ year) at the distances of up to 250 pc from the Sun. By means of our own speckle interferometric observations conducted on the 6 m BTA telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences, and the spectroscopic and visual data taken from the literature, we determine the frequency of binary and multiple systems in this sample. The ratio of single, binary, triple and quadruple systems among 221 primary components of the sample is 147:64:9:1. We show that the distribution of orbital periods of binary and multiple subdwarfs is asymmetric in the range of up to $P=10^{10}$ days, and has a maximum at $P=10^{2}-10^{3}$ days, what differs from the distribution, obtained for the thin disc G dwarfs (Duquennoy & Mayor 1991). We estimated the number of undetected companions in our sample. Comparing the frequency of binary subdwarfs in the field and in the globular clusters, we show that the process of halo field star formation by the means of destruction of globular clusters is very unlikely in our Galaxy. We discuss the multiplicity of old metal-poor stars in nearby stellar streams.
description: 51 pages, 11 figures, accepted to AJ
Bericht über die fünfundvierzigste Generalversammlung vom 24. Juni 1890 in Esslingen
Creators: name: ,
Publisher: name: unkn
Year: 2021

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 47, 1891
title: Sanctuaire de Marmaria
Creators: name: Archeovision Production
name: Tournon-Valiente, Sarah
name: Archeovision
Publisher: name: Archeovision
Year: 1996

description: Le sanctuaire d'Athéna Pronaia Marmaria à Delphes prend place sur une terrasse en contrebas du site du sanctuaire d'Apollon. Les monuments de la terrasse sont : les temples d'Athéna,le trésor éolique,le trésor dorique,la tholos et le temple en calcaire.
description: 30 fichiers au format jpg
Weiterentwicklung von Methoden in der numerischen Schweißsimulation
Creators: name: Brand, Marcus Christian
Publisher: name: Karlsruhe
Year: 2012
Subjects: Schweißsimulation
Verzug
Eigenspannungen
Schweißen
Phasenumwandlungen

description: Ziel der Schweißsimulation ist neben des weiterführenden Verständnisses zur Verzugs- und Eigenspannungsentstehung deren detailgenaue Berechnung. Die Verzugs- und Eigenspannungsentwicklung beim Schweißen wurde untersucht, um mit Experimenten validiert Modellerweiterungen ableiten und folgerichtig erweitern zu können. Diese wurden in praxisrelevanten Fallbeispielen auf ihre anwendungsorientierte Tauglichkeit erfolgreich untersucht.
Approaching a parameter-free metadynamics
Creators: name: Dickson, Bradley M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a unique derivation of metadynamics. The starting point for the derivation is an on-the-fly reweighting scheme but through an approximation we recover the standard metadynamics and the well-tempered metadynamics in a general form while never appealing to the extended Lagrangian framework. This work leads to a more robust understanding of the error in the computed free energy than what has been obtained previously. Moreover, a formula for the exact free energy is introduced. The formula can be used to post-process any existing well-tempered metadynamics data allowing one, in principle, to obtain an exact free energy regardless the metadynamics parameters.
description: 4 pages, 1 figure