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Articles 481 - 510 of 11462
Full-Text Articles in Physical Sciences and Mathematics
Estimation And Inference For Spatial And Spatio-Temporal Mixed Effects Models, Casey M. Jelsema
Estimation And Inference For Spatial And Spatio-Temporal Mixed Effects Models, Casey M. Jelsema
Dissertations
One of the most common goals of geostatistical analysis is that of spatial prediction, in other words: filling in the blank areas of the map. There are two popular methods for accomplishing spatial prediction. Either kriging, or Bayesian hierarchical models. Both methods require the inverse of the spatial covariance matrix of the data. As the sample size, n, becomes large, both of these methods become impractical. Reduced rank spatial models (RRSM) allow prediction on massive datasets without compromising the complexity of the spatial process. This dissertation focuses on RRSMs, particularly situations where the data follow non-Gaussian distributions.
The manner in …
The Clustering Of Galaxies In The Sdss-Iii Baryon Oscillation Spectroscopic Survey: Weighing The Neutrino Mass Using The Galaxy Power Spectrum Of The Cmass Sample, Gong-Bo Zhao, Shun Saito, For Full List Of Authors, See Publisher's Website.
The Clustering Of Galaxies In The Sdss-Iii Baryon Oscillation Spectroscopic Survey: Weighing The Neutrino Mass Using The Galaxy Power Spectrum Of The Cmass Sample, Gong-Bo Zhao, Shun Saito, For Full List Of Authors, See Publisher's Website.
Physics Faculty Research & Creative Works
We measure the sum of the neutrino particle masses using the three-dimensional galaxy power spectrum of the Sloan Digital Sky Survey III (SDSS-III) Baryon Oscillation Spectroscopic Survey Data Release 9 the constant MASS (CMASS) galaxy sample. Combined with the cosmic microwave background, supernova and additional baryonic acoustic oscillation data, we find upper 95 per cent confidence limits (CL) of the neutrino mass ∑mν < 0.340 eV within a flat Λ cold dark matter (ΛCDM) background, and ∑mν< 0.821 eV, assuming a more general background cosmological model. The number of neutrino species is measured to be Neff = 4.308 ± 0.794 and 4.032+0.870 -0.894 for these two cases, respectively. We study and quantify the effect of several factors on the neutrino measurements, including the galaxy power spectrum bias model, the …
An Analysis Of Peer-To-Peer Distributed Hash Algorithms In Improving Fault Tolerance In The Hadoop Running Environment, Benjamin R. Knaus
An Analysis Of Peer-To-Peer Distributed Hash Algorithms In Improving Fault Tolerance In The Hadoop Running Environment, Benjamin R. Knaus
Honors Theses
Cloud computing is a “new frontier” in the world of computing. One of the cloud architectures widely used is the Hadoop running environment. Hadoop consists of many parts—including MapReduce, TaskTrackers, and JobTrackers. Right now, there is no fault-tolerance for JobTrackers in Hadoop. This paper analyzes four different distributed hash algorithms (Pastry, Tapestry, CAN, and Chord) that could be implemented inside Hadoop to improve JobTracker fault-tolerance. We recommend Chord as the best suited for integration and improvement of Hadoop.
Addressing Trans-Boundary Challenges Through Collaboration: How Organizations "Harmonize" Actions And Decisions Across Problem Landscapes, Rachel Fleishman
Addressing Trans-Boundary Challenges Through Collaboration: How Organizations "Harmonize" Actions And Decisions Across Problem Landscapes, Rachel Fleishman
Dissertations - ALL
Collaborative governance- or collaboration- has become increasingly important for the design and implementation of public policy in the United States. This dissertation explores concrete and unique policy-related benefits emerging from collaboration, and the processes by which they emerge.
Collaboration is defined broadly as "any interaction between two or more organizations undertaken with the intention to cooperate." This definition is applied in the context of water quality management, where the physical nature of watersheds and the lack of regulatory authority available to policy-makers leads to a variety of collaborative arrangements.
A survey of literatures addressing collaboration from different theoretical angles revealed …
A 4-Layer Method Of Developing Integrated Sensor Systems With Lab View, Jianghua Bai, Chen Jing-Wei, John L. Freeouf, Andres H. La Rosa
A 4-Layer Method Of Developing Integrated Sensor Systems With Lab View, Jianghua Bai, Chen Jing-Wei, John L. Freeouf, Andres H. La Rosa
Physics Faculty Publications and Presentations
System integrity is important for fast and accurate measurement and control. LabVIEW is widely used in education and industry. Many LabVIEW codes are hard to be read and shown because of their 2D topology. In order to simplify the programming, a 4-layer model of developing sensor or measurement systems with LabVIEW is proposed in this paper. The purpose of this paper is to show the readers how to design simple, clear and strong automated systems with LabVIEW. Using a Sensirion SHT75 humidity sensor and an NI USB6008 DAQ board as an example, this paper describes the steps of developing a …
Synthesis Of Resveratrol Ester Derivatives, Daniel Ressler
Synthesis Of Resveratrol Ester Derivatives, Daniel Ressler
Electronic Theses and Dissertations
The goal of this research project was to synthesize derivatives of transresveratrol. In order for resveratrol to be activated and used by the body it needs to bind to Human Serum Albumin (HSA), a protein in blood plasma. The derivatives were synthesized to improve the ability of resveratrol to enter cells as well as improve their ability to bind to HSA. The three derivatives that were synthesized have converted one of the hydroxyl groups on resveratrol to an ether with a methylene chain terminated by a carboxylic acid. By varying the lengths of the methylene chain we varied the water …
Synthesis And Characterization Of A New Cyano-Substituted Tris(Pyrazolyl)Borate And Its Thallium(I) Complex, Bozumeh Som
Synthesis And Characterization Of A New Cyano-Substituted Tris(Pyrazolyl)Borate And Its Thallium(I) Complex, Bozumeh Som
Electronic Theses and Dissertations
A new cyanoscorpionate - tris(4-cyano-3,5-diphenylpyrazolyl)borate (TpPh2,4CN) has been synthesized and characterized. The thallium complex of this ligand TlTpPh2,4CN has also been prepared and characterized by FT-IR, 1H NMR, and single-crystal X-ray-diffraction. The complex TlTpPh2,4CN crystalized in the monoclinic space group C2/c with unit cell a = 14.6697(10) Å, b = 13.9493(10) Å, c = 19.3347(12) Å, and b= 91.761(2)°. Structural comparison of TlTpPh2,4CN with analogous complexes demonstrated the effects of both steric and electron-withdrawing substituents on coordination geometry and the electronic properties of the metal ion. There were short contacts between the cyano groups …
Physical Security Assessment Of A Regional University Computer Network, Nathan H. Timbs
Physical Security Assessment Of A Regional University Computer Network, Nathan H. Timbs
Electronic Theses and Dissertations
Assessing a network's physical security is an essential step in securing its data. This document describes the design, implementation, and validation of PSATool, a prototype application for assessing the physical security of a network's intermediate distribution frames, or IDFs (a.k.a. "wiring closets"). PSATool was created to address a lack of tools for IDF assessment. It implements a checklist-based protocol for assessing compliance with 52 security requirements compiled from federal and international standards. This checklist can be extended according to organizational needs.
PSATool was validated by using it to assess physical security at 135 IDFs at East Tennessee State University. …
Synthesis And Characterization Of 2,2-Cis-[Rh2(Nphcoch3)4]•Ncc6h4r Where R = H, 2-Ch3, 3-Ch3, 4-Ch3 And [Rh2(O2cch3)(Nphcocf3)3], Fredricka F. Quarshie
Synthesis And Characterization Of 2,2-Cis-[Rh2(Nphcoch3)4]•Ncc6h4r Where R = H, 2-Ch3, 3-Ch3, 4-Ch3 And [Rh2(O2cch3)(Nphcocf3)3], Fredricka F. Quarshie
Electronic Theses and Dissertations
Five novel compounds were synthesized and characterized. Crystal structures were determined using Rigaku Mercury 375/MCCD(XtaLAB mini) diffractometer with graphite monochromated MoKα radiation. The crystal structures of [Rh2(NPhCOCH3)4•xNCC6H4R where x = 1 or 2 and R=H, 2-CH3,3-CH3 and 4-CH3 were solved to an R1 value of less than 5 (R1= Σ||Fo| - |Fc|| / Σ |Fo|). In each of the nitrile complexes, the rhodium is five or six coordinate and possesses pseudo D4h symmetry. The complexes were …
Long-Term Recovery Of South Indian Creek Following Interstate Construction, Clara Mcclure
Long-Term Recovery Of South Indian Creek Following Interstate Construction, Clara Mcclure
Electronic Theses and Dissertations
The expansion of Interstate 26 from Erwin, TN to the North Carolina border was a project that potentially adversely impacted South Indian Creek because of the steep landscapes and potential for erosion. Several studies have shown the short-term, negative effects of road construction on the water quality of nearby water bodies. Non-point source pollution is the major source of water pollution in the United States. The primary objective of this research is to evaluate the long-term effects of the construction of Interstate 26 on South Indian Creek to see if there has been any ecological recovery. The Environmental Health Sciences …
Co2 Capture On Porous Adsorbents Containing Surface Amino Groups, Odette Amana Esam
Co2 Capture On Porous Adsorbents Containing Surface Amino Groups, Odette Amana Esam
Electronic Theses and Dissertations
The potential impact of carbon dioxide as a major source of global warming has led to extensive research in order to mitigate the greenhouse effect. In this work, four adsorbents were synthesized and studied. The adsorbents were obtained by grafting and sol-gel of amino-containing molecules such as bis[3-(trimethoxysilyl)propyl]amine as monoamine and [3-(2-aminoethylamino)propyl]- trimethoxysilane as diamine on the surface of silica gel. CO2 passed through adsorbents at room temperature for its capture, then desorbed at moderate heating, and stored in the form of insoluble BaCO3. The adsorbent synthesized by sol-gel synthesis was found to be more efficient due to its high …
The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2013, David J. Lauten, Kathleen J. Castelein, J. Daniel Farrar, Melissa F. Breyer, Eleanor P. Gaines
The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2013, David J. Lauten, Kathleen J. Castelein, J. Daniel Farrar, Melissa F. Breyer, Eleanor P. Gaines
Institute for Natural Resources Publications
From 26 March – 19 September 2013 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North and South Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives for the Oregon coastal population in 2013 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) …
Can Inhibitor-Resistant Substitutions In The Mycobacterium Tuberculosis Β-Lactamase Blac Lead To Clavulanate Resistance?: A Biochemical Rationale For The Use Of Β-Lactam–Β-Lactamase Inhibitor Combinations, Sebastian G. Kurz, Kerstin A. Wolff, Saugata Hazra, Christopher R. Bethel, Andrea M. Hujer, Kerri M. Smith, Yan Xu, Lee W. Tremblay, John S. Blanchard, Liem Nguyen, Robert A. Bonomo
Can Inhibitor-Resistant Substitutions In The Mycobacterium Tuberculosis Β-Lactamase Blac Lead To Clavulanate Resistance?: A Biochemical Rationale For The Use Of Β-Lactam–Β-Lactamase Inhibitor Combinations, Sebastian G. Kurz, Kerstin A. Wolff, Saugata Hazra, Christopher R. Bethel, Andrea M. Hujer, Kerri M. Smith, Yan Xu, Lee W. Tremblay, John S. Blanchard, Liem Nguyen, Robert A. Bonomo
Chemistry Faculty Publications
The current emergence of multidrug-resistant (MDR) and extensively drug-resistant (XDR) tuberculosis calls for novel treatment strategies. Recently, BlaC, the principal β-lactamase of Mycobacterium tuberculosis, was recognized as a potential therapeutic target. The combination of meropenem and clavulanic acid, which inhibits BlaC, was found to be effective against even extensively drug-resistant M. tuberculosis strains when tested in vitro. Yet there is significant concern that drug resistance against this combination will also emerge. To investigate the potential of BlaC to evolve variants resistant to clavulanic acid, we introduced substitutions at important amino acid residues of M. tuberculosis BlaC (R220, A244, S130, and …
Landscape Ecological Analysis Of Patterns Influencing Bat Activity In Southeast Glacial Plains Of Wisconsin, Angela Leckie Jackson
Landscape Ecological Analysis Of Patterns Influencing Bat Activity In Southeast Glacial Plains Of Wisconsin, Angela Leckie Jackson
Theses and Dissertations
Nearly half of the world's bat species are threatened by anthropogenic land use. To contribute to the conservation of these cryptic mammals, it is imperative to understand bat habitat selection in human-dominated landscapes. Bat activity was calculated using active acoustic surveys conducted June and July for three years along river and lake transects in an agricultural matrix. Using multiple logistic regression and ANOVA regression tree analyses, I examined the relationship between bat activity of four species and habitat structure at multiple scales.
Aquatic features were determined to be the greatest predictor of bat activity with rivers supporting greater amount of …
Application Of Fractional Moments For Comparing Random Variables With Varying Probability Distributions, Munther R. Al Shami, A. R. Mugdadi, R. R. Nigmatullin, S. I. Osokin
Application Of Fractional Moments For Comparing Random Variables With Varying Probability Distributions, Munther R. Al Shami, A. R. Mugdadi, R. R. Nigmatullin, S. I. Osokin
Applications and Applied Mathematics: An International Journal (AAM)
New methods are being presented for statistical treatment of different random variables with unknown probability distributions. These include analysis based on the probability circles, probability ellipses, generalized mean values, generalized Pearson correlation coefficient and the beta-function analysis. Unlike other conventional statistical procedures, the main distinctive feature of these new methods is that no assumptions are made about the nature of the probability distribution of the random series being evaluated. Furthermore, the suggested procedures do not introduce uncontrollable errors during their application. The effectiveness of these methods is demonstrated on simulated data with extended and reduced sample sizes having different probability …
Analysis Of Mixed Correlated Bivariate Negative Binomial And Continuous Responses, F. Razie, E. B. Samani, M. Ganjali
Analysis Of Mixed Correlated Bivariate Negative Binomial And Continuous Responses, F. Razie, E. B. Samani, M. Ganjali
Applications and Applied Mathematics: An International Journal (AAM)
A general model for the mixed correlated negative binomial and continuous responses is proposed. It is shown how to construct parameter of the models, using the maximization of the full likelihood. Influence of a small perturbation of correlation parameter of the model on the likelihood displacement is also studied. The model is applied to a medical data, obtained from an observational study on women, where the correlated responses are the negative binomial response of joint damage and continuous responses of body mass index. Simultaneous effects of some covariates on both responses are investigated.
Analytic Solution For The Drainage Of Sisko Fluid Film Down A Vertical Belt, A. M. Siddiqui, Hameed Ashraf, T. Haroon, A. Walait
Analytic Solution For The Drainage Of Sisko Fluid Film Down A Vertical Belt, A. M. Siddiqui, Hameed Ashraf, T. Haroon, A. Walait
Applications and Applied Mathematics: An International Journal (AAM)
This paper deals with the drainage of Sisko fluid film down a vertical belt. It provides an approximate solution of the resulting non-linear and inhomogeneous ordinary differential equation using perturbation method (PM) and Adomian decomposition method (ADM). Comparison of the results obtained by both methods demonstrate that these series solutions are strictly identical but ADM is easy to compute and can be extended to any higher order. The important physical quantities like velocity profile, volume flow rate, average film velocity, shear stress, force exerted by the fluid film and vorticity vector are derived. The effects of fluid behaviour index, Stokes …
The Underlying Physiology Of Arterial Pulse Wave Morphology In Spatial Domain, Nzerem F. Egenti, Alozie H. Nkechi
The Underlying Physiology Of Arterial Pulse Wave Morphology In Spatial Domain, Nzerem F. Egenti, Alozie H. Nkechi
Applications and Applied Mathematics: An International Journal (AAM)
Cardio-vascular events are among the world’s leading causes of morbidity and mortality. Most postulates suppose that culinary delights can be implicated in incidences of cardio-vascular diseases. This school of thought holds well in many respects. Much as the truistic value of the said school is acknowledged, we conceived of physiological disposition as an endogenous dominant factor in the events being considered, whereas culinary measures constitute an exogenous contributory factor. In this work we aimed at studying the effects of distance (stature) on pulse waveforms. Certain elements of our study showed that pulse wavelength was dominant in prescribing cardio-vascular physiology.
Numerical Algorithm For Analysis Of N-Ary Subdivision Schemes, Ghulam Mustafa, Muhammad Zahid
Numerical Algorithm For Analysis Of N-Ary Subdivision Schemes, Ghulam Mustafa, Muhammad Zahid
Applications and Applied Mathematics: An International Journal (AAM)
The analysis for continuity of limit curves generated by m-point n-ary subdivision schemes is presented for m, n ≥ 2. The analysis is based on the study of corresponding differences and divided difference schemes. A numerical algorithm is introduced which computes the continuity and higher order divided differences of schemes in an efficient way. It is also free from polynomial factorization and division unlike the well-known Laurent polynomial algorithm for analysis of schemes which depends on polynomial algebraic operations. It only depends on the arithmetic operations.
Several New Families Of Jarratt’S Method For Solving Systems Of Nonlinear Equations, V. Kanwar, Sanjeev Kumar, Ramandeep Behl
Several New Families Of Jarratt’S Method For Solving Systems Of Nonlinear Equations, V. Kanwar, Sanjeev Kumar, Ramandeep Behl
Applications and Applied Mathematics: An International Journal (AAM)
In this study, we suggest and analyze a new and wide general class of Jarratt’s method for solving systems of nonlinear equations. These methods have fourth-order convergence and do not require the evaluation of any second or higher-order Fréchet derivatives. In terms of computational cost, all these methods require evaluations of one function and two first-order Fréchet derivatives. The performance of proposed methods is compared with their closest competitors in a series of numerical experiments. It is worth mentioning that all the methods considered here are found to be effective and comparable to the robust methods available in the literature.
Dispersion Of A Solute In Hartmann Two-Fluid Flow Between Two Parallel Plates, J. P. Kumar, J. C. Umavathi
Dispersion Of A Solute In Hartmann Two-Fluid Flow Between Two Parallel Plates, J. P. Kumar, J. C. Umavathi
Applications and Applied Mathematics: An International Journal (AAM)
The paper presents an analytical solution for the dispersion of a solute in a conducting immiscible fluid flowing between two parallel plates in the presence of a transverse magnetic field. The fluids in both the regions are incompressible, electrically conducting and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions for each fluid are obtained and these solutions are matched at the interface using suitable matching conditions. The results are tabulated for various values of viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric …
Grayscale-Image Encryption Using Random Hill Cipher Over Sln(F) Associated With Discrete Wavelet Transformation, D. C. Mishra, R. K. R. K. Sharma
Grayscale-Image Encryption Using Random Hill Cipher Over Sln(F) Associated With Discrete Wavelet Transformation, D. C. Mishra, R. K. R. K. Sharma
Applications and Applied Mathematics: An International Journal (AAM)
Image data are highly sensitive and prone to incidental decoding by intruders. The security of image data in an insecure network is therefore a major issue. In this paper, we have presented a novel approach for grayscale-image encryption and decryption using Random Hill cipher over SLn(F) associated with discrete wavelet transformation. Earlier techniques for encryption and decryption of image data discussed missing the keys, but in this approach, both the keys and the arrangement of RHC are emphasized. Additionally, keys multiplication side (pre or post) over a grayscale-image data matrix also inevitable to know, to correctly decrypt the encrypted image …
Scanned Ion Beam Therapy For Thoracic Tumors, John Gordon Eley
Scanned Ion Beam Therapy For Thoracic Tumors, John Gordon Eley
Dissertations & Theses (Open Access)
Although frequently cured of Hodgkin lymphoma, adolescents and young adults can develop radiation induced second cancers. These patients could potentially benefit from scanned ion radiotherapy yet likely would require motion mitigation strategies. In theory, four-dimensional (4D) optimization of ion beam fields for individual motion states of respiration can enable superior sparing of healthy tissue near moving targets, compared to other motion mitigation strategies. Furthermore, carbon-ion therapy can sometimes provide greater relative biological effectiveness (RBE) for cell sterilization in a target but nearly equivalent RBE in tissue upstream of the target, compared to proton therapy. Thus, we expected that for some …
Synthesis And Characterization Of Three New Tetrakis(N-Phenylacetamidato) Dirhodium(Ii) Nitrile Complexes, Nkongho Atem-Tambe
Synthesis And Characterization Of Three New Tetrakis(N-Phenylacetamidato) Dirhodium(Ii) Nitrile Complexes, Nkongho Atem-Tambe
Electronic Theses and Dissertations
Three new tetrakis [Rh2(PhNCOCH3)4·xNCR] (R = {2-CH3}C6H4 (x=2), R = {3-CH3}C6H4 (x=1), R = (3-CN)C6H4∞ (x=1)) complexes have been synthesized and characterized. These complexes were characterized by IR and 1H NMR spectroscopies and X-ray crystallography which solved with R1<0.05.
[Rh2(PhNCOCH3)4·2NC{2-CH3}C6H4] was triclinic (a=9.79Å, b=14.79Å, c=16.36Å, α=103.84⁰, β=99.17⁰, γ=99.77⁰, P-1(#2), μCN=2227.78cm-1, Rh-Rh=2.42Å, N-C=1.13Å, 1.14Å, Rh-N=2.34Å, 2.35Å, Rh-N-C=151.6⁰, 152.5⁰, Rh-Rh-N=173.0⁰, 174.6⁰).
[Rh2(PhNCOCH3)4 …
0.05.Survival Analysis Of Cardiovascular Diseases, Yuanxin Hu
Survival Analysis Of Cardiovascular Diseases, Yuanxin Hu
All Theses and Dissertations (ETDs)
No abstract provided.
Using Resonance Raman Cross-Section Data To Estimate The Spin State Populations Of Cytochromes P450, Piotr J. Mak, Qianhong Zhu, James R. Kincaid
Using Resonance Raman Cross-Section Data To Estimate The Spin State Populations Of Cytochromes P450, Piotr J. Mak, Qianhong Zhu, James R. Kincaid
Chemistry Faculty Research and Publications
The cytochromes P450 (CYPs) are heme proteins responsible for the oxidation of xenobiotics and pharmaceuticals and the biosynthesis of essential steroid products. In all cases, substrate binding initiates the enzymatic cycle, converting ferric low-spin to high-spin state, with the efficiency of the conversion varying widely for different substrates, so documentation of this conversion for a given substrate is an important objective. Resonance Raman (rR) spectroscopy can effectively yield distinctive frequencies for the ν3 ‘spin state marker’ bands. Here, employing a reference cytochrome P450 (CYP101), the intensities of the ν3 modes (ILS) and (IHS …
Road Systems And Betweenness, Paul Bankston
Road Systems And Betweenness, Paul Bankston
Mathematics, Statistics and Computer Science Faculty Research and Publications
A road system is a collection of subsets of a set—the roads—such that every singleton subset is a road in the system and every doubleton subset is contained in a road. The induced ternary (betweenness) relation is defined by saying that a point c lies between points a and b if c is an element of every road that contains both a and b . Traditionally, betweenness relations have arisen from a plethora of other structures on a given set, reflecting intuitions that range from the order-theoretic to the geometric and topological. In this paper we initiate a study …
Looking Forward Transdisciplinary Modeling, Environmental Forecasting, And Management, D. B. Haidvogel, E. Turner, E. N. Curchitser, E. E. Hofmann
Looking Forward Transdisciplinary Modeling, Environmental Forecasting, And Management, D. B. Haidvogel, E. Turner, E. N. Curchitser, E. E. Hofmann
CCPO Publications
No abstract provided.
Direct Observations Of Plasma Upflows And Condensation In A Catastrophically Cooling Solar Transition Region Loop, Norton B. Orange, David L. Chesney, Hakeem M. Oluseyi, Katie Hesterly, M Patel, Patrick Champey
Direct Observations Of Plasma Upflows And Condensation In A Catastrophically Cooling Solar Transition Region Loop, Norton B. Orange, David L. Chesney, Hakeem M. Oluseyi, Katie Hesterly, M Patel, Patrick Champey
Aerospace, Physics, and Space Science Faculty Publications
Minimal observational evidence exists for fast transition region (TR) upflows in the presence of cool loops. Observations of such occurrences challenge notions of standard solar atmospheric heating models as well as their description of bright TR emission. Using the EUV Imaging Spectrometer on boardHinode, we observe fast upflows (vλ −10 km s−1) over multiple TR temperatures (5.8 logT 6.0) at the footpoint sites of a cool loop (logT 6.0). Prior to cool loop energizing, asymmetric flows of + 5 km s−1 and −60 km s−1 are observed at footpoint sites. These flows, speeds, and patterns occur simultaneously with both magnetic …
Measurement Of The Cross Section And Angular Correlations For Associated Production Of A Z Boson With B Hadrons In Pp Collisions At S√ = 7 Tev, The Cms Collaboration, S. Chatrchyan, V. Khachatryan, Marc M. Baarmand, B. Dorney, Marcus Hohlmann, Himali Kalakhety, Francisco Yumiceva
Measurement Of The Cross Section And Angular Correlations For Associated Production Of A Z Boson With B Hadrons In Pp Collisions At S√ = 7 Tev, The Cms Collaboration, S. Chatrchyan, V. Khachatryan, Marc M. Baarmand, B. Dorney, Marcus Hohlmann, Himali Kalakhety, Francisco Yumiceva
Aerospace, Physics, and Space Science Faculty Publications
A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7 TeVwith the CMS detector at the LHC, for an integrated luminosity of 5.2 fb−1. The b hadrons are identified by means of displaced secondary vertices, without the use of reconstructed jets, permitting the study of b-hadron pair production at small angular separation. Differential cross sections are presented as a function of the angular separation of the b hadrons and the Z boson. In addition, inclusive measurements are presented. …