cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigating the Etiology of Primary Failure of Eruption (PFE): A Comprehensive Phenotypic and Genetic Analysis
Creators: name: Hendricks, Heather
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2015
Subjects: subject: Molecular biology
subject: Dentistry
subject: FOS: Clinical medicine
subject: Genetics
subject: FOS: Biological sciences

description: Heather M Hendricks: Investigating the Etiology of Primary Failure of Eruption (PFE): A Comprehensive Phenotypic and Genetic Analysis (Under the direction of Sylvia A Frazier-Bowers) The genetic basis of PFE (OMIM ID: 125350), a diagnosis that conveys a poor prognosis in the eruption/ function of teeth, was interrogated. Treatment with a continuous archwire worsens the condition. Two aims tested the hypothesis that PTH1R mutations result in loss of function and that multiple genes cause PFE: to determine 1) the fate of a functional PTH1R mutation and 2)PFE contribution by BMP2 and TNFSF-11. Methods: We used IFA and transfected COS7 cells with either the WT or 1092delG PTH1R mutation sequence to compare the fate of the expressed protein and performed mutational analysis of BMP2 and TNFSF-11 with PCR and sequencing. Results: Sequencing revealed 3 intronic SNPs in TNFSF-11; in silico /functional studies showed expression alterations and structural changes in mutant vs WT PTH1R protein. Conclusion: PTH1R mutations in PFE likely result from diminished function; causative mutations in genes.
The effects of limited ankle dorsiflexion range of motion on knee and ankle kinematics
Creators: name: Dill, Karli Elizabeth
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Ankle dorsiflexion (DF) range of motion (ROM) may influence movement variables that are known to impact ACL loading, such as knee valgus and knee flexion. Research has not identified individuals with limited and normal DF to investigate the relationship between DF assessments and movement patterns. DF ROM (knee straight, knee bent), weight bearing lunge technique (WBLT), and anterior/posterior (A/P) talar glide were assessed. Participants were grouped into limited and normal groups based on knee straight DF ROM. Knee and ankle kinematics were assessed during three dynamic movements (OHS, SLS, JL). Three separate ANOVA's for task and Pearson correlations between ROM and ankle kinematics were performed. There were no kinematic differences between the limited and normal groups during any of the tasks. The WBLT strongly correlated with ankle DF displacement during the OHS and SLS. Therefore, the WBLT may be more representative of the amount of DF range of motion during movement.
The Semiclassical Coherent State Propagator in the Weyl Representation
Creators: name: Braun, Carol
name: Li, Feifei
name: Garg, Anupam
name: Stone, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is shown that the semiclassical coherent state propagator takes its simplest form when the quantum mechanical Hamiltonian is replaced by its Weyl symbol in defining the classical action, in that there is then no need of a Solari-Kochetov correction. It is also shown that such a correction exists if a symbol other than the Weyl symbol is chosen, and that its form is different depending on the symbol chosen. The various forms of the propagator based on different symbols are shown to be equivalent provided the correspondingly correct Solari-Kochetov correction is included. All these results are shown for both particle and spin coherent state propagators. The global anomaly in the fluctuation determinant is further elucidated by a study of the connection bewteen the discrete fluctuation determinant and the discrete Jacobi equation.
Fehlerverarbeitung: Effekte von emotionalem Priming und Stress
Creators: name: Langemann, Katharina
name: Bozzetti, Emilia
name: Ganslmeier, Rahel
name: Kromke, Konstanze
name: Beitz, Paula
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Untersucht werden sollen die Einflüsse von positivem und negativem Affekt und Stress auf die Fehlerverarbeitung (Fehlerentdeckung und Fehleradaptation) mithilfe des Speeded Inference game.
Metabolomic studies of saliva in gingivitis and periodontitis
Creators: name: McGuire, Alison
Publisher: name: University of North Carolina at Chapel Hill
Year: 2014

description: The aim of this study was to conduct metabolomic analysis of saliva during 3-week induction and 4-week resolution of stent-induced, biofilm overgrowth (SIBO) in humans to elucidate an association between changes in clinical disease and the salivary metabolome. Five periodontal disease classifications were developed using probing depths and bleeding on probing. SIBO was induced in 50 subjects for 21 days followed by oral hygiene instruction for 28 days. Clinical indices and unstimulated saliva were collected weekly during induction and biweekly during resolution. Samples were analyzed using metabolomic profiling (liquid and gas chromatography mass spectrometry, Metabolon Inc). SIBO was associated with marked, but reversible, increases in clinical indices. 281 metabolites were identified using metabolomic profiling. Eight metabolites demonstrated significant changes including seven in the amino acid super-pathway (threonine, N-acetylserine, serine, 5-oxoproline, histidine, glutamate and erythronate). Analysis of the salivary metabolome may provide new mechanistic insights for periodontal disease progression.
Refined Multiscale Fuzzy Entropy based on Standard Deviation for Biomedical Signal Analysis
Creators: name: Azami, Hamed
name: Fernandez, Alberto
name: Escudero, Javier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Multiscale entropy (MSE) has been a prevalent algorithm to quantify the complexity of fluctuations in the local mean value of biomedical time series. Recent developments in the field have tried to improve the MSE by reducing its variability in large scale factors. On the other hand, there has been recent interest in using other statistical moments than the mean, i.e. variance, in the coarse-graining step of the MSE. Building on these trends, here we introduce the so-called refined composite multiscale fuzzy entropy based on the standard deviation (RCMFEσ) to quantify the dynamical properties of spread over multiple time scales. We demonstrate the dependency of the RCMFEσ, in comparison with other multiscale approaches, on several straightforward signal processing concepts using a set of synthetic signals. We also investigate the complementarity of using the standard deviation instead of the mean in the coarse-graining process using magnetoencephalograms in Alzheimer disease and publicly available electroencephalograms recorded from focal and non-focal areas in epilepsy. Our results indicate that RCMFEσ offers complementary information to that revealed by classical coarse-graining approaches and that it has superior performance to distinguish different types of physiological activity.
Creep of beryllium pebbles after neutron irradiation to 6000 appm helium production
Creators: name: Chakin, Vladimir
name: Rolli, Rolf
name: Zmitko, Milan
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023

description: Beryllium pebbles with 1 mm diameter are the reference neutron multiplier material in the Helium Cooled Pebble Bed (HCPB) blanket of ITER. High energy fusion neutrons cause swelling of the beryllium pebbles at the HCPB operation temperatures to 923 K. The radiation-induced swelling of beryllium as well as different thermal expansions of the beryllium pebbles and the structural material can cause the high thermal stresses in the pebble bed. Thermal creep of the pebbles should reduce the stresses because the relaxation. Neutron irradiation leads to degradation of mechanical properties, what expresses in the hardening and the embrittlement. This radiation effect hinders the effect of the relaxation. In this study, creep properties of beryllium pebbles with 1 mm diameter produced by Rotating Electrode Method (REM) at NGK, Japan were studied. These beryllium pebbles were irradiated in the HFR, Petten, the Netherlands, at temperatures of 643, 723, 833, 923 K to 6000 appm helium production. The creep tests of individual pebbles were performed at temperatures which were equal to the irradiation temperatures by using of three different loadings per each temperature. For two lowest irradiation temperatures of 643 and 723 K, no creep effect was observed. The radiation hardening only occurs that manifests itself in significant reduction of the pebble deformation under loading. At higher irradiation temperatures of 833 and 923 K, the creep rates have significant values. The creep rates strongly depend on the testing temperatures and the loadings. At high irradiation temperatures the ability of beryllium pebbles to the significant deformation under applied loadings should provide the complete relaxation of the internal stresses in the beryllium pebbles.
An Investigation of Cosolvent Flushing for the Remediation of PAH's from Former Manufacture Gas Plant Sites
Creators: name: Newman, Arne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Manufactured gas plant (MGP) operations across the United States during the late 19th and early 20th centuries resulted in the release of polycyclic aromatic hydrocarbons (PAH's) into soil and groundwater systems, leading to degradation of groundwater quality and creating public health risks. Former MGP sites require appropriate cleanup methods; this study uses PAH-contaminated field soil to examine the potential for cosolvent flushing as an efficient remediation technology. Batch experiments examined the desorption and solubilization of PAH's with cosolvent solutions; a log-linear relationship between cosolvent volume fraction (fc) and equilibrium partitioning coefficient Kp was observed. A linear relationship between fc and the percentage of PAH's removed from the field soil was also noted. Cosolvent effects on individual PAH's increased with solute hydrophobicity, represented by log Kow. Column experiments studying the transport of PAH's with flow observed more efficient contaminant removal with an increase in solution fc. A large-scale column experiment designed as a simple representation of PAH transport in a field setting found an estimated 93% removal of contaminants after 13.6 pore volumes (PV) of flushing with a 95% methanol solution.
Ionized Gas Kinematics at High Resolution V: [NeII], Multiple Clusters, High Efficiency Star Formation and Blue Flows in He 2-10
Creators: name: Beck, Sara C.
name: Turner, Jean L.
name: Lacy, John
name: Greathouse, Thomas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measured the $12.8μ$m [NeII] line in the dwarf starburst galaxy He 2-10 with the high-resolution spectrometer TeXeS on the NASA IRTF. The data cube has diffraction-limited spatial resolution $\sim1^{\prime\prime}$ and total velocity resolution including thermal broadening of $\sim5$km/s. This makes it possible to compare the kinematics of individual star-forming clumps and molecular clouds in the three dimensions of space and velocity, and allows us to determine star formation efficiencies. The kinematics of the ionized gas confirm that the starburst contains multiple dense clusters. From the $M/R$ of the clusters and the $\simeq30-40$% star formation efficiencies the clusters are likely to be bound and long lived, like globulars. Non-gravitational features in the line profiles show how the ionized gas flows through the ambient molecular material, as well as a narrow velocity feature which we identify with the interface of the HII region and a cold dense clump. These data offer an unprecedented view of the interaction of embedded HII regions with their environment.
description: accepted to ApJ
Environmental policy and EU accession in Croatia
Creators: name: Khan, Natavan Mammadova
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Croatia is one of the former-communist states that were reborn as a self-determined nation-state in 1991. Croatia is expected to join EU in July 2013. As a part of the EU accession process Croatia has closed European acquis, including chapter 27 on the Environment. The dynamics of the EU's environmental policy changed with each wave of enlargement and increased effectiveness of the implementation of the environmental acquis through the membership condition - the accession conditionality. The implementation of the environmental acquis became a mandatory for the EU membership of potential member states such as Croatia. Environmental acquis for Croatia was most demanding and difficult chapter in accession negotiations with EU due to its low administrative and financial capacity and almost non-existent horizontal cooperation between organizations responsible for the environmental protection. But Croatia could recognize long-term benefits of implementing the environmental chapter and made a great effort to harmonize with the EU's environmental legislative framework.
The effects of 28 days of beta-alanine supplementation on the physical working capacity at heart rate threshold (PWCHRT)
Creators: name: Woessner, Mary
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Beta-alanine (BA) supplementation has proven to be an effective means of delaying fatigue. The purpose of this study was to determine the effect of 28 days of BA supplementation on the physical working capacity at heart rate threshold (PWCHRT), a submaximal aerobic fatigue measure. Testing included eight-nine total visits: an enrollment day, resting EKG, physical screening, peak oxygen consumption (VO2peak), and two PWCHRT assessments over four days. Thirty subjects (mean ± SD; age 21.0 ± 2.1 years; body mass 72.7 ± 14.5kg; height 170.1 ± 7.9 cm) were randomly assigned to BA (n=15) or placebo (PL, n=15) groups. Significant differences existed between BA and PL for PWCHRT (p=0.000; BAΔ=+24.2, PLΔ=+11.2), but not for VO2peak (p=0.222), TTE (p= 0.562), or VT (p=0.134). Change scores with 95% confidence intervals showed significant improvements in PWCHRT and TTE for BA only. BA may increase heart rate training threshold.
The Relationship Between Gait Speed and Dynamic Stability Following a 4-week Intervention in Knee Osteoarthritis Patients
Creators: name: Vredeveld, Kayla
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: PURPOSE: This study explored the relationship of both gait speed and body composition to gait stability following knee osteoarthritis (KOA) treatment. METHODS: 53 diagnosed KOA patients completed 4 weeks of therapeutic rehabilitation with testing sessions immediately before and after. Testing assessed self-reported disability, body composition, muscle function, and gait mechanics. Paired sample t-tests were completed, followed by correlations comparing gait speed, center of pressure, and ground reaction forces with baseline and change score values. RESULTS: 20 meter gait speed significantly increased following intervention, while pain and self-reported function scores improved. Ground reaction forces showed increased acceleration and deceleration in the involved limb. Preliminary data showed correlation between lean mass and mediolateral center of pressure displacement. CONCLUSIONS: Current KOA treatments are able to not only improve function through increased walking speed, but also improve the ability to load the limb with greater ground reaction forces. Body composition data warrants further exploration.
The distance-dependent two-point function of triangulations: a new derivation from old results
Creators: name: Guitter, Emmanuel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present a new derivation of the distance-dependent two-point function of random planar triangulations. As it is well-known, this function is intimately related to the generating functions of so-called slices, which are pieces of triangulation having boundaries made of shortest paths of prescribed length. We show that the slice generating functions are fully determined by a direct recursive relation on their boundary length. Remarkably, the kernel of this recursion is some quantity introduced and computed by Tutte a long time ago in the context of a global enumeration of planar triangulations. We may thus rely on these old results to solve our new recursion relation explicitly in a constructive way.
description: 22 pages, 13 figures
Orthodontic posttreatment changes in the inclination or position of central incisors and alterations in the location of skeletal A and B points. A systematic review.
Creators: name: Magalhães, Karoline
name: Vargas, Eduardo
name: Maia, Lucianne
name: Marañón-Vásquez, Guido
name: Ferreira, Daniele
name: de Oliveira Ruellas, Antonio
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Orthodontics and Orthodontology
subject: Dentistry
subject: FOS: Clinical medicine

description: Points A and B are cephalometric landmarks commonly used to determine the maxillo-mandibular sagittal relationship. Some authors stated that they can be affected by alveolar bone remodeling associated with orthodontic tooth movement of the incisors. Since information on this relationship is controversial, we consider it necessary to systematically review the whole existing literature and evidence state on this issue.
Engineering and biophysical analysis of alpha adrenergic receptor crystallography constructs
Creators: name: Schools, Zachary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: G protein-coupled receptors (GPCRs) are ubiquitously expressed membrane-spanning proteins that control all of human physiology. GPCRs are structurally complex and their mechanism of activation and signaling is not fully understood. Furthermore, there is a need for more subtype-selective and functionally selective drugs. Development of these drugs could be accelerated by obtaining crystal structures of GPCRs. One such family that could benefit from the structural information in a crystal structure is the Alpha Adrenergic receptors (ADRA). ADRA receptors control cardiovascular as well as peripheral and central nervous system functions, but lack subtype selective drugs. Thus, the ADRA receptor family was screened in parallel for thermostability and likelihood of crystal formation. ADRA1A-nBRIL bound to prazosin was found to be the best target for further crystallization efforts.
Testing noncontextuality inequalities that are building blocks of quantum correlations
Creators: name: Arias, Mauricio
name: Cañas, Gustavo
name: Gómez, Esteban S.
name: Barra, Johanna F.
name: Xavier, Guilherme B.
name: Lima, Gustavo
name: D'Ambrosio, Vincenzo
name: Sciarrino, Fabio
name: Cabello, Adán
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Measurement scenarios containing events with relations of exclusivity represented by pentagons, heptagons, nonagons, etc., or their complements are the only ones in which quantum probabilities cannot be described classically. Interestingly, quantum theory predicts that the maximum values for any of these graphs cannot be achieved in Bell inequality scenarios. With the exception of the pentagon, this prediction remained experimentally unexplored. Here we test the quantum maxima for the heptagon and the complement of the heptagon using three- and five-dimensional quantum states, respectively. In both cases, we adopt two different encodings: linear transverse momentum and orbital angular momentum of single photons. Our results exclude maximally noncontextual hidden-variable theories and are in good agreement with the maxima predicted by quantum theory.
description: REVTeX4, 7 pages, 2 figures, 4 experiments in 2 continents
A New Analysis of the Exoplanet Hosting System HD 6434
Creators: name: Hinkel, Natalie R.
name: Kane, Stephen R.
name: Pilyavsky, Genady
name: Boyajian, Tabetha S.
name: James, David J.
name: Naef, Dominique
name: Fischer, Debra A.
name: Udry, Stephane
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The current goal of exoplanetary science is not only focused on detecting but characterizing planetary systems in hopes of understanding how they formed, evolved, and relate to the Solar System. The Transit Ephemeris Refinement and Monitoring Survey (TERMS) combines both radial velocity (RV) and photometric data in order to achieve unprecedented ground-based precision in the fundamental properties of nearby, bright, exoplanet-hosting systems. Here we discuss HD 6434 and its planet, HD 6434b, which has a M_p*sin(i) = 0.44 M_J mass and orbits every 22.0170 days with an eccentricity of 0.146. We have combined previously published RV data with new measurements to derive a predicted transit duration of ~6 hrs, or 0.25 days, and a transit probability of 4%. Additionally, we have photometrically observed the planetary system using both the 0.9m and 1.0m telescopes at the Cerro Tololo Inter-American Observatory, covering 75.4% of the predicted transit window. We reduced the data using the automated TERMS Photometry Pipeline, developed to ensure consistent and accurate results. We determine a dispositive null result for the transit of HD 6434b, excluding the full transit to a depth of 0.9% and grazing transit due to impact parameter limitations to a depth of 1.6%
description: 9 pages, 5 figures, 3 tables, accepted to AJ
General Approach and Prerequisites for Transferring Factory Planning Methods on Flow Orientation and Transformability to Hospital Systems
Creators: name: Wecken, Lena
name: Faeghi, Shiva
name: Hingst, Lennart
name: Nyhuis, Peter
name: Lennerts, Kunibert
Publisher: name: publish-Ing.
Year: 2022
Subjects: Factory planning
Flow Orientation
Transformability
Hospital Planning
Hospital System

description: Manufacturing companies are faced with the challenge of operating cost-efficiently and remaining competitive in a turbulent environment with constantly changing demands on production. To meet these challenges, factory planning has developed concepts of flow orientation and transformability. Through decades of research, factory planners now have extensive methodologies and numerous principles, enabling them to design factory objects appropriately and align factories to be flow-oriented and transformable. Hospitals face similar challenges like manufacturing companies. Due to public funding, many hospitals have limited financial resources and must, for example, cover parts of their financial requirements by themselves through cost-efficiency. In addition, hospitals are influenced by ongoing developments like demographic change and recent challenges such as the COVID-19 pandemic. These and further examples not only tighten the economic situation of hospitals, but also force their systems to adapt to resulting challenges. They must successfully align their systems to remain operational under changing conditions. In contrast to factories, these issues have not been addressed sufficiently in the field of hospital planning. Therefore, factory planning approaches on flow orientation and transformability will be transferred to hospital systems in order to strengthen hospitals against globally existing and socially relevant challenges in the healthcare system. With the aim to realise this venture, this paper presents a structured approach for its implementation. It also investigates the fundamental similarities between factories and hospitals and examines whether the main prerequisites for the successful transfer of the approaches can be met.
Aharonov-Bohm phase for an electromagnetic wave background
Creators: name: Bright, Max
name: Singleton, Douglas
name: Yoshida, Atsushi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The canonical Aharonov-Bohm effect is usually studied with time-independent potentials. In this work, we investigate the Aharonov-Bohm phase acquired by a charged particle moving in {\it time-dependent} potentials . In particular, we focus on the case of a charged particle moving in the time varying field of a plane electromagnetic wave. We work out the Aharonov-Bohm phase using both the potential ({\it i.e.} $\oint A_μdx ^μ$) and field ({\it i.e.} $\frac{1}{2}\int F_{μν} d σ^{μν}$) forms of the Aharanov-Bohm phase. We give conditions in terms of the parameters of the system (frequency of the electromagnetic wave, the size of the space-time loop, amplitude of the electromagnetic wave) under which the time varying Aharonov-Bohm effect could be observed.
description: 18 pages revtex, 3 figures. To be published EPJC
Direct optical state preparation of the dark exciton in a quantum dot
Creators: name: Lüker, S.
name: Kuhn, T.
name: Reiter, D. E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Because of their weak coupling to the electromagnetic field dark excitons in semiconductor quantum dots possess extremely long lifetimes, which makes them attractive candidates for quantum information processing. On the other hand, preparation and manipulation of dark states is challenging, because commonly used optical excitation mechanisms are not applicable. We propose a new, efficient mechanism for the deterministic preparation of the dark exciton exploiting the application of a tilted magnetic field and the optical excitation with a chirped, i.e., frequency modulated, laser pulse.
A Study of a Mini-drift GEM Tracking Detector
Creators: name: Azmoun, B.
name: DiRuzza, B.
name: Franz, A.
name: Kiselev, A.
name: Pak, R.
name: Phipps, M.
name: Purschke, M. L.
name: Woody, C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A GEM tracking detector with an extended drift region has been studied as part of an effort to develop new tracking detectors for future experiments at RHIC and for the Electron Ion Collider that is being planned for BNL or JLAB. The detector consists of a triple GEM stack with a small drift region that was operated in a mini TPC type configuration. Both the position and arrival time of the charge deposited in the drift region were measured on the readout plane which allowed the reconstruction of a short vector for the track traversing the chamber. The resulting position and angle information from the vector could then be used to improve the position resolution of the detector for larger angle tracks, which deteriorates rapidly with increasing angle for conventional GEM tracking detectors using only charge centroid information. Two types of readout planes were studied. One was a COMPASS style readout plane with 400 micron pitch XY strips and the other consisted of 2x10mm2 chevron pads. The detector was studied in test beams at Fermilab and CERN, along with additional measurements in the lab, in order to determine its position and angular resolution for incident track angles up to 45 degrees. Several algorithms were studied for reconstructing the vector using the position and timing information in order to optimize the position and angular resolution of the detector for the different readout planes. Applications for large angle tracking detectors at RHIC and EIC are also discussed.
description: Submitted to the IEEE Transactions on Nuclear Science
Life on the farm: making North Carolina's agricultural landscape sustainable
Creators: name: Templin, Elizabeth Allen
Publisher: name: University of North Carolina at Chapel Hill
Year: 2009

description: Since the 1980s, farmers, researchers and activists have questioned the effects on the environment and public health of conventional agriculture, which uses fossil-fuel based agricultural chemicals to produce crops. Although conventional agricultural methods are capable of producing large crop yields with less labor than other methods, research has linked these methods to global warming, harming natural resources and endangering public health. These concerns spurred a sustainable farming movement that is concerned with three pillars of sustainability: environmental health, economic viability and social equity. This thesis, comprising three print articles, explores sustainable farming in North Carolina. First, this thesis studies the economic viability of farming in a profile of an organic farmer. Second, it explores how a community garden teaches individuals about the environment and impacts gardeners' lives. Lastly, this thesis examines a collaborative, sustainable agricultural initiative that fits into a larger effort toward sustainability in the state.
Local Stellar Kinematics from RAVE data - VI. Metallicity Gradients Based on the F-G Main-sequence Stars
Creators: name: Plevne, O.
name: Ak, T.
name: Karaali, S.
name: Bilir, S.
name: Ak, S.
name: Bostanci, Z. F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimated iron and metallicity gradients in the radial and vertical directions with the F and G type dwarfs taken from the RAVE DR4 database. The sample defined by the constraints Zmax<=825 pc and ep<=0.10 consists of stars with metal abundances and space velocity components agreeable with the thin-disc stars. The radial iron and metallicity gradients estimated for the vertical distance intervals 08 kpc. The range of the iron and metallicity abundance for the F and G type dwarfs on elongated orbits, [-0.13, -0.01), is similar to the thin-disc stars, while at least half of their space velocity components agree better with those of the thick-disc stars. The vertical iron gradients estimated for the F and G type dwarfs on circular orbits are d[Fe/H]/dZmax=-0.176(0.039) dex/kpc and d[Fe/H]/dZmax=-0.119(0.036) dex/kpc for the intervals Zmax<= 825 and Zmax<=1500 pc, respectively.
description: 16 pages, including 11 figures and 5 tables, accepted for publication in PASA
CLASH-VLT: Strangulation of cluster galaxies in MACSJ0416.1-2403 as seen from their chemical enrichment
Creators: name: Maier, C.
name: Kuchner, U.
name: Ziegler, B. L.
name: Verdugo, M.
name: Balestra, I.
name: Girardi, M.
name: Mercurio, A.
name: Rosati, P.
name: Fritz, A.
name: Grillo, C.
name: Nonino, M.
name: Sartoris, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (abridged) We explore the Frontier Fields cluster MACS J0416.1-2403 at z=0.3972 with VIMOS/VLT spectroscopy from the CLASH-VLT survey covering a region which corresponds to almost three virial radii. We measure fluxes of 5 emission lines of 76 cluster members enabling us to unambiguously derive O/H gas metallicities, and also SFRs from Halpha. For intermediate massses we find a similar distribution of cluster and field galaxies in the MZR and mass vs. sSFR diagrams. Bulge-dominated cluster galaxies have on average lower sSFRs and higher O/Hs compared to their disk-dominated counterparts. We use the location of galaxies in the projected velocity vs. position phase-space to separate our cluster sample into a region of objects accreted longer time ago and a region of recently accreted and infalling galaxies. We find a higher fraction of accreted metal-rich galaxies (63%) compared to the fraction of 28% of metal-rich galaxies in the infalling regions. Intermediate mass galaxies falling into the cluster for the first time are found to be in agreement with predictions of the fundamental metallicity relation. In contrast, for already accreted star-forming galaxies of similar masses, we find on average metallicities higher than predicted by the models. This trend is intensified for accreted cluster galaxies of the lowest mass bin, that display metallicities 2-3 times higher than predicted by models with primordial gas inflow. Environmental effects therefore strongly influence gas regulations and control gas metallicities of log(M/Msun)<10.2 (Salpeter IMF) cluster galaxies. We also investigate chemical evolutionary paths of model galaxies with and without inflow of gas showing that strangulation is needed to explain the higher metallicities of accreted cluster galaxies. Our results favor a strangulation scenario in which gas inflow stops for log(M/Msun)<10.2 galaxies when accreted by the cluster.
description: Version better matched to the published version, including table with observed and derived quantities for the 76 cluster galaxies
Barriers to accessing ear and hearing care in low- and middle- income countries: protocol for a systematic scoping review
Creators: name: Waterworth, Christopher
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Diseases
subject: Public Health
subject: Medicine and Health Sciences
subject: Primary Care
subject: Epidemiology
subject: Medical Specialties
subject: Other Medical Specialties
subject: Communication Sciences and Disorders
subject: Congenital, Hereditary, and Neonatal Diseases and Abnormalities
subject: Rehabilitation and Therapy
subject: Otolaryngology
subject: Health Services Research
subject: hearing loss, ear disease, barriers to care, access, lack of resources, low- and middle- income countries

description: The aim of this review is to summarise the nature and extend of the existing literature on the barriers to accessing ear and hearing care in LMICs. In addition, the review will identify the existing ear and hearing care models and interventions that facilitate access to ear and hearing care services for people living in LMICs.
BPS brane cosmology in N=2 supergravity
Creators: name: Emam, Moataz H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the embedding of flat BPS 3-branes in five dimensional N=2 supergravity theory. We derive the branes' dynamical equations as well as general expressions for the hypermultiplet fields then focus on a single brane and study its time evolution. It is shown that the brane's Hubble parameter correlates with the moduli of the underlying manifold's complex structure. For certain particular solutions, the moduli seem to exhibit an instability; being large valued at early times then rapidly decaying to either zero or some convergent constant value. The possibility of extending these results to the cosmology of our universe is implied and briefly discussed. Our results are in line with the production and decay of heavy moduli in the early universe, as is currently believed in the literature.
description: 17 pages, 1 figure
Interrupting "Green Capital": transformative political practice at the frontiers of wind energy in Mexico
Creators: name: Sellwood, Scott Allan
Publisher: name: University of North Carolina at Chapel Hill
Year: 2014

description: This thesis examines how contestations over the large-scale production of wind energy are transforming political life in the Isthmus of Tehuantepec, Mexico. In the 1980s, the Mexican state and international actors targeted the Isthmus as a place for investing in green energy development. Today, wind farms occupy between 10,000 and 15,000 hectares, but could extend to between 40,000 and 50,000 hectares if the 'full' wind energy potential of the Isthmus is developed. Indigenous social movements are interrupting this `greening' of the Isthmus, however, sustaining that the expansion of green energy, despite its associations with the greater ecological good, is detrimental to their survival. How is the harnessing of wind in the Isthmus becoming a new frontier of green capitalism? And how are indigenous movements reshaping the practices of green energy in Mexico? I examine these questions through the case study of indigenous-led resistance to the construction of a large-scale wind energy project in the southern Isthmus: the San Dionisio project along the Barra de Santa Teresa. As the Mexican government pursues green energy, the Isthmus is re-signified as an environmentally responsible space of liberal peace. Drawing on participant observation, interviews with NGOs and local residents, and analysis of environmental and energy policy documents, I argue that this is a virtual peace, one that makes invisible the character, agency, and needs of civil society actors. By framing resistance to wind farming as the cause of conflicts to be managed for the greater common good, state-sanctioned `pacification' of the Isthmus entrenches short-term direct violence and structural violence as constitutive of green capitalism.
Spectral theory of extended Harper's model and a question by Erdős and Szekeres
Creators: name: Avila, A.
name: Jitomirskaya, S.
name: Marx, C. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The extended Harper's model, proposed by D.J. Thouless in 1983, generalizes the famous almost Mathieu operator, allowing for a wider range of lattice geometries (parametrized by three coupling parameters) by permitting 2D electrons to hop to both nearest and next nearest neighboring (NNN) lattice sites, while still exhibiting its characteristic symmetry (Aubry duality). Previous understanding of the spectral theory of this model was restricted to two dual regions of the parameter space, one of which is characterized by the positivity of the Lyapunov exponent. In this paper, we complete the picture with a description of the spectral measures over the entire remaining (self-dual) region, for all irrational values of the frequency parameter (the magnetic flux in the model). Most notably, we prove that in the entire interior of this regime, the model exhibits a collapse from purely ac spectrum to purely sc spectrum when the NNN interaction becomes symmetric. In physics literature, extensive numerical analysis had indicated such "spectral collapse," however so far not even a heuristic argument for this phenomenon could be provided. On the other hand, in the remaining part of the self-dual region, the spectral measures are singular continuous irrespective of such symmetry. The analysis requires some rather delicate number theoretic estimates, which ultimately depend on the solution of a problem posed by Erdős and Szekeres.
description: to appear in Inventiones mathematicae
PerSpat_1
Creators: name: Rathjens, Jonathan
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Environmental Public Health
subject: Statistics and Probability
subject: Physical Sciences and Mathematics
subject: Public Health
subject: Medicine and Health Sciences
subject: Environmental Sciences
subject: Environmental Health and Protection
subject: Environmental Chemistry
subject: Applied Statistics
subject: Water Resource Management
subject: Chemistry

description: Spatial and Temporal Analyses of Perfluorooctanic Acid in Drinking Water for External Exposure Assessment in the Ruhr Metropolitan Area, Germany
A Parametric Study of Mixing in a Granular Flow a Bi-Axial Spherical Tumbler
Creators: name: Christov, Ivan C.
name: Lueptow, Richard M.
name: Ottino, Julio M.
name: Sturman, Rob
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We report on a computational parameter space study of mixing protocols for a half-full bi-axial spherical granular tumbler. The quality of mixing is quantified via the intensity of segregation (concentration variance) and computed as a function of three system parameters: angles of rotation about each tumbler axis and the flowing layer depth. Only the symmetric case is considered in which the flowing layer depth is the same for each rotation. We also consider the dependence on $\bar{R}$, which parametrizes the concentric spheroids ("shells") that comprise the volume of the tumbler. The intensity of segregation is computed over 100 periods of the mixing protocol for each choice of parameters. Each curve is classified via a time constant, $τ$, and an asymptotic mixing value, $bias$. We find that most choices of angles and most shells throughout the tumbler volume mix well, with mixing near the center of the tumbler being consistently faster (small $τ$) and more complete (small $bias$). We conclude with examples and discussion of the pathological mixing behaviors of the outliers in the so-called $τ$-$bias$ scatterplots.
description: 12 pages, 7 figures, Springer contributed+books macros used; submitted to an edited Springer volume "Dynamical Systems - Modelling" of selected papers from DSTA'2015
Predictors of E. coli Contamination at Rural Water Points in Kenya, Malawi, Mozambique
Creators: name: Oliver, Julian
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2015
Subjects: subject: Environmental sciences
subject: Water resources development--Management
subject: Environmental engineering
subject: FOS: Environmental engineering

description: Little quantitative information is available on how institutional factors affect drinking water quality in rural sub-Saharan Africa. Data were collected on E. coli concentrations and management practices at 549 rural water points in Kenya, Malawi, Mozambique, Uganda, and Zambia. Water piped on the premises of the home had much lower odds of contamination than public taps, boreholes, dug wells, and springs. The presence of a trained technician marginally decreased the odds of contamination (OR=0.28, p=0.07). Among water points testing positive for E. coli, nearby technical support and fee collection systems were associated with significantly lower concentrations. The sanitary inspection score, previously recommended as a surrogate for water quality analysis, was uncorrelated with E. coli concentrations (Kendall’s tau =-0.063, p=0.11). These results provide further evidence of the need for financial and institutional support to maintain water points and to aim for piped water as the gold standard.
Evaluating Galactic Habitability Using High Resolution Cosmological Simulations of Galaxy Formation
Creators: name: Forgan, Duncan
name: Dayal, Pratika
name: Cockell, Charles
name: Libeskind, Noam
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the first model that couples high-resolution simulations of the formation of Local Group galaxies with calculations of the galactic habitable zone (GHZ), a region of space which has sufficient metallicity to form terrestrial planets without being subject to hazardous radiation. These simulations allow us to make substantial progress in mapping out the asymmetric three-dimensional GHZ and its time evolution for the Milky Way (MW) and Triangulum (M33) galaxies, as opposed to works that generally assume an azimuthally symmetric GHZ. Applying typical habitability metrics to MW and M33, we find that while a large number of habitable planets exist as close as a few kiloparsecs from the galactic centre, the probability of individual planetary systems being habitable rises as one approaches the edge of the stellar disc. Tidal streams and satellite galaxies also appear to be fertile grounds for habitable planet formation. In short, we find that both galaxies arrive at similar GHZs by different evolutionary paths, as measured by the first and third quartiles of surviving biospheres. For the Milky Way, this interquartile range begins as a narrow band at large radii, expanding to encompass much of the galaxy at intermediate times before settling at a range of 2-13kpc. In the case of M33, the opposite behaviour occurs - the initial and final interquartile ranges are quite similar, showing gradual evolution. This suggests that galaxy assembly history strongly influences the time evolution of the GHZ, which will affect the relative time lag between biospheres in different galactic locations. We end by noting the caveats involved in such studies and demonstrate that high resolution cosmological simulations will play a vital role in understanding habitability on galactic scales, provided that these simulations accurately resolve chemical evolution.
description: 24 pages, 33 figures, accepted for publication in the International Journal of Astrobiology
Using Gram matrices and residues to generate symmetric functions
Creators: name: Behrend, Samuel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: In this paper we argue for the use of a symmetric bilinear map S on Qn+1 as a means of producing and manipulating symmetric functions; using certain vectors of rational functions we can produce Schur functions. We define S as the determinant of a specific Gram matrix, whose elements are the result of an antisymmetric bilinear map on Q as well as a reversion map R on the same space. Ultimately, S allows us to derive an alternative construction of the Jacobi-Trudi identity (extending the identity to Schur functions) as well as a variant of the Cauchy identities.
Waiting for Supermensch?: on the use and abuse of Bildung in education
Creators: name: Child, Erik John
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: This thesis will investigate the formulation of Bildung in Nietzsche's lectures, On the Future of our Educational Institutions. Four strands in this formulation are as follows: 1) The natural world as educative influence. 2) Bildung as an aesthetic discipline. 3) How wonder is the end goal of a classical education. 4) Nietzsche's argument that Bildung and democracy are incompatible. A critique of Nietzsche's ideas follows. In tension with Nietzsche's account of Bildung is education scholar Klause Prange's argument that Bildung is compatible with and necessary to democracy. Two contrasting understandings of Bildung emerge. The first is Nietzsche's notion of the term as preparatory for an eventual genius. The second is Prange's account of Bildung as a preparation for more humane institutions. The latter alternative to Nietzsche is considered as a potential model for a more hospitable culture to learning in U.S. educational settings.
Kopierbuch für Briefe nach in- und ausländischen Orten im deutschen und französischen Sprachgebiet
Copies de Lettres Françaises et allemagnes
Creators: name: Franz Wagner & Cie
Publisher: name: [s.n.]
Year: 1824

description: Darin: Register; eingeklebte Einlagen zur Liquidation der Firma (1824)
description: Französisch
description: Verzeichnung=Description=Inventaire 2014 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Sebastian Preher