Digital Commons Network^™

Measurements Of Dⁿ² And Aⁿ¹: Probing The Neutron Spin Structure, D. Flay, M. Posik, D. S. Parno, K. Allada, M. Canan, C. Hyde, Jefferson Lab Hall A Collaboration

Physics Faculty Publications

We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d₂ of the neutron dⁿ₂ was conducted. The quantity dⁿ₂ represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the ³He spin structure functions, g₁ and g₂, after nuclear corrections had been applied to these …

Photoproduction Of Λ And Σº Hyperons Using Linearly Polarized Photons, C. A. Paterson, D. G. Ireland, K. Livingston, B. Mckinnon, D. Adikaram, M. Amaryan, Y. Prok, B. Torayev

Physics Faculty Publications

Background: Measurements of polarization observables for the reactions ^→ᵧp→K+ Λ and ^→ᵧp→ K+Σ⁰ have been performed. This is part of a program of measurements designed to study the spectrum of baryon resonances in particular, and nonperturbative QCD in general.

Purpose: The accurate measurement of several polarization observables provides tight constraints for phenomenological fits, which allow the study of strangeness in nucleon and nuclear systems. Beam-recoil observables for the ^→ᵧp→ K+Σ⁰ reaction have not been reported before now.

Method: Themeasurements were carried out using linearly polarized photon beams incident on a liquid hydrogen target, and the …

The Dance Of Delegitimation: Democratic Government And The Wars On Terror, Philip C. Bobbitt

Faculty Scholarship

It is pretty standard fare to argue that in fighting a successful war on terror, we shall have to compromise some of our values. And while this is not altogether correct, it is certainly more insightful and candid than the claims that really nothing needs to change which the very events of 9/11 and its aftermath decisively refute. Nevertheless, this standard claim is wrong, but because it is wrong in a subtle, habitual way, it takes some analysis to get right.

Gluon Tmd In Particle Production From Low To Moderate X, I. Balitsky, A. Tarasov

Physics Faculty Publications

We study the rapidity evolution of gluon transverse momentum dependent distributions appearing in processes of particle production and show how this evolution changes from small to moderate Bjorken x.

Measurement Of Target And Double-Spin Asymmetries For The Ep → Eπ+(N) Reaction In The Nucleon Resonance Region At Low Q², Clas Collaboration, K. P. Adhikari, S E. Kuhn, D. Adikaram, M. J. Amaryan, S. Bültmann, Gail Dodge, N. Guler, L. B. Weinstein

Physics Faculty Publications

We report measurements of target- and double-spin asymmetries for the exclusive channel ^→e^→p → eπ⁺(n) in the nucleon resonance region at Jefferson Lab using the CEBAF Large Acceptance Spectrometer (CLAS). These asymmetries were extracted from data obtained using a longitudinally polarized NH₃ target and a longitudinally polarized electron beam with energies 1.1, 1.3, 2.0, 2.3, and 3.0 GeV. The new results are consistent with previous CLAS publications but are extended to a low Q² range from 0.0065 to 0.35(GeV/c)². The Q² access was made possible by a custom-built Cherenkov detector …

High-Fidelity Simulations Of Long-Term Beam-Beam Dynamics On Gpus, B. Terzić, K. Arumugam, M. Aturban, C. Cotnoir, A. Godunov, D. Ranjan, M. Stefani, M. Zubair, F. Lin, V. Morozov, Y. Roblin, H. Zhang

Physics Faculty Publications

Future machines such as the Electron Ion Collider (MEIC), linac-ring machines (eRHIC) or LHeC are particularly sensitive to beam-beam effects. This is the limiting factor for long-term stability and high luminosity reach. The complexity of the non-linear dynamics makes it challenging to perform such simulations typically requiring millions of turns. Until recently, most of the methods have involved using linear approximations and/or tracking for a limited number of turns. We have developed a framework which exploits a massively parallel Graphical Processing Units (GPU) architecture to allow for tracking millions of turns in a sympletic way up to an arbitrary order. …

Do The Mechanical And Chemical Properties Of InvisalignTm Appliances Change After Use? A Retrieval Analysis, T. Gerard Bradley, Lauren Teske, George Eliades, Spiros Zinelis, Theodore Eliades

School of Dentistry Faculty Research and Publications

Aim: To investigate the mechanical and chemical alterations of Invisalign appliances after intraoral aging.

Materials and methods: Samples of Invisalign appliances (Align Technology, San Jose, California, USA) were collected following routine treatment for a mean period of 44±15 days (group INV), whereas unused aligners of the same brand were used as reference (group REF). A small sample from the central incisors region was cut from each appliance and the buccal surface was analysed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy (n = 5). Then the appliances were cut (n = 25) and embedded in acrylic resin, ground/polished …

A Systematic Review Of Recall Regimen And Maintenance Regimen Of Patients With Dental Restorations. Part 1: Tooth-Borne Restorations, Avinash S. Bidra, Diane M. Daubert, Lily T. Garcia, Marissa F. Gauthier, Timothy F. Kosinski, Conrad A. Nenn, John A. Olsen, Jeffrey A. Platt, Susan S. Wingrove, Nancy Deal Chandler, Donald A. Curtis

School of Dentistry Faculty Research and Publications

Purpose

To evaluate the current scientific evidence on patient recall and maintenance of dental restorations on natural teeth, standardize patient care regimens, and improve maintenance of oral health. An additional purpose was to examine areas of deficiency in the current scientific literature and provide recommendations for future studies.

Materials and Methods

An electronic search for articles in the English language literature from the past 15 years was performed independently by multiple investigators using a systematic search process. After application of predetermined inclusion and exclusion criteria, the final list of articles was reviewed in depth to meet the objectives of this …

Constitutional Rhetoric, Jamal Greene

Faculty Scholarship

For close to a century, students of judicial behavior have suggested that what judges think is not altogether the same as what they say. Within the legal academy, this claim has long been associated with legal realists who have argued that the formal legal rules explicated in judicial opinions are at least partly epiphenomenal, masking the influence that the personal characteristics and dispositions of adjudicators exercise over legal outcomes. Political scientists have argued, variously, that such outcomes are determined by ideology, social background, or political, professional, or other institutional constraints.

The notion that at least some “extralegal” factors influence judicial …

Assessment Formats In Dental Medicine: An Overview, Susanne Gerhard-Szep, Arndt Guentsch, Peter Pospiech, Andreas Söhnel, Petra Scheuzel, Tugba Zahn

School of Dentistry Faculty Research and Publications

Aim: At the annual meeting of German dentists in Frankfurt am Main in 2013, the Working Group for the Advancement of Dental Education (AKWLZ) initiated an interdisciplinary working group to address assessments in dental education. This paper presents an overview of the current work being done by this working group, some of whose members are also actively involved in the German Association for Medical Education's (GMA) working group for dental education. The aim is to present a summary of the current state of research on this topic for all those who participate in the design, administration and evaluation of university-specific …

Combining Harmonic Generation And Laser Chirping To Achieve High Spectral Density In Compton Sources, Balša Terzić, Cody Reeves, Geoffrey A. Krafft

Physics Faculty Publications

Recently various laser-chirping schemes have been investigated with the goal of reducing or eliminating ponderomotive line broadening in Compton or Thomson scattering occurring at high laser intensities. As a next level of detail in the spectrum calculations, we have calculated the line smoothing and broadening expected due to incident beam energy spread within a one-dimensional plane wave model for the incident laser pulse, both for compensated (chirped) and unchirped cases. The scattered compensated distributions are treatable analytically within three models for the envelope of the incident laser pulses: Gaussian, Lorentzian, or hyperbolic secant. We use the new results to demonstrate …

Comment On "Controlling The Spectral Shape Of Nonlinear Thomson Scattering With Proper Laser Chirping", Balša Terzić, Geoffrey A. Krafft

Physics Faculty Publications

Rykovanov, Geddes, Schroeder, Esarey and Leemans [Phys. Rev. Accel. Beams 19, 030701 (2016); hereafter RGSEL] have recently reported on the analytic derivation for the laser pulse frequency modulation (chirping) which controls spectrum broadening for high laser pulse intensities. We demonstrate here that their results are the same as the exact solutions reported in Terzic, Deitrick, Hofler and Krafft [Phys. Rev. Lett. 112, 074801 (2014); hereafter TDHK]. While the two papers deal with circularly and linearly polarized laser pulses, respectively, the difference in expressions for the two is just the usual factor of 1/2 present from going from circular to linear …

Ab Initio Calculation Of The Electromagnetic And Neutral Weak Response Functions Of 4He And 12C, A. Lovato, O. Benhar, J. Carlson, S. Gandolfi, Steven C. Pieper, N. Rocco, R. Schiavilla

Physics Faculty Publications

Precise measurement of neutrino oscillations, and hence the determination of their masses demands a quantitative understanding of neutrino-nucleus interactions. To this aim, two-body meson-exchange currents have to be accounted for along within realistic models of nuclear dynamics. We summarize our progresses towards the construction of a consistent framework, based on quantum Monte Carlo methods and on the spectral function approach, that can be exploited to accurately describe neutrino interactions with atomic nuclei over the broad kinematical region covered by neutrino experiments.

Structure Constant Of Twist-2 Light Ray Operators In The Regge Limit, Ian Balitsky, Vladimir Kazakov, Evgeny Sobko

Physics Faculty Publications

We compute the normalized structure constant of three twist-2 operators in N =4 SYM in the leading Balitsky-Fadin-Kuraev-Lipatov (BFKL) approximation at any N_c . The result is applicable to other gauge theories including QCD.

The Politics Of Global Humanitarianism: R2p Before And After Libya, Michael W. Doyle

Faculty Scholarship

The responsibility to protect (R2P) is both a license for and a leash against forcible intervention. It succeeded in widening the scope of legitimate armed intervention by licensing some (protective) interventions but only because it was seen as a leash against other (exploitative) interventions. This chapter traces the origins of the R2P doctrine in the Kosovo and ICISS reports, highlights the special features of the 2005 Outcome Document, notes how the doctrine was strengthened in practice by careful attention to non-coercive measures in Myanmar, Kenya, and Guinea, and then examines the landmark case of its use to sanction and then …

A Search For The Lhcb Charmed "Pentaquark" Using Photoproduction Of J/Ψ At Threshold In Hall C At Jefferson Lab, A. Asaturyan, H. Mkrtchyan, T. Tadevosyan, S. Zhamkochyan, J. Arrington, W. Armstrong, K. Hafidi, M. Hattawy, Z. Ye, K. Aniol, H. Gao, Z. Zhao, T. Liu, X. Yan, C. Gu, C. Peng, X. Li, W. Xiong, P. Markowitz, K. Adhikari, H. Bhatt, D. Bhetuwal, J. Dunne, D. Dutta, L. El-Fassi, L. Ye, F. R. Wesselmann, X. Chen, Q. Fu, R. Wang, Y. Zhang, F. Zhao, R. Dupré, G. M. Huber, W. Li, A. Zafar, S. Bae, H. Choi, S. Choi, H. Go, J. Ha, H. Atac, B. Duran, S. Joosten, Z.-E. Meziani, M. Paolone, M. Rehfuss, N. Sparveris, J.-P. Chen, E. Chudakov, M. Diefenthaler, O. Hansen, D. Higinbotham, M. Jones, D. Meekins, L. Pentchev, E. Pooser, S. Wood

Physics Faculty Publications

We propose to measure the photo-production cross section of J/Ψ near threshold in search of the recently observed LHCb hidden charm resonances Pc(4380) and Pc(4450) consistent with "pentaquarks." The observation of these resonances in photo-production is important to differentiate the true resonance nature of the LHCb states from kinematics enhancements. The bremsstrahlung photon beam produced with an 11 GeV electron beam at CEBAF enables us to cover the energy range of J/Ψ production from the threshold photo-production energy of 8.2 GeV to an energy beyond the presumed Pc(4450) resonance production. The proposed experiment will be carried out in Hall C …

Studies Of Light Nuclei In Χeft: A Status Report, R. Schiavilla

Physics Faculty Publications

A status report on χEFT studies of few-nucleon electroweak structure and dynamics is provided, including electromagnetic form factors of few nucleon systems, the pp weak fusion and muon weak captures on deuteron and ³He, an a number of parity-violating processes induced by hadronic weak interactions

Testimony Regarding The First Amendment Defense Act (Fada), Katherine M. Franke, Elizabeth A. Sepper, Ariela Gross, Sylvia A. Law, Martin S. Flaherty, Suzanne B. Goldberg, Carol Sanger, J. Stephen Clark, Florens Wagman Roisman, Gregory Magarian, Caroline Mala Corbin, Nomi Stolzenberg, Carlos A. Ball, Aaron Ezra Waldman, Aziza Ahmed, Jennifer A. Drobac, Deborah Widiss, Arthur S. Leonard, Martha M. Ertman

Faculty Scholarship

My testimony today is delivered on behalf of twenty leading legal scholars who have joined me in providing an in depth analysis of the meaning and likely effects of the First Amendment Defense Act (FADA), were it to become law. We feel particularly compelled to provide testimony to this Committee because the first legislative finding set out in FADA declares that: “Leading legal scholars concur that conflicts between same-sex marriage and religious liberty are real and should be addressed through legislation.” As leading legal scholars we must correct this statement: we do not concur that conflicts between same-sex marriage and …

Preliminary Comments On Restatement Of Copyright, Draft 2, Jane C. Ginsburg, June M. Besek

Faculty Scholarship

Thank you for the opportunity to comment on Preliminary Draft 2 of the Restatement of Copyright. These are preliminary comments, given the short time frame provided to review the draft, and we anticipate sending further comments after we’ve had the opportunity to study the draft further, or as a follow-up to the Advisers’ meeting and the Consultative Group meeting on November 10 and 11, 2016, respectively.

Indianbush: Where Was It? (St. John's First Location In Collegeville), Peggy L. Roske

Archives History Lessons

No abstract provided.

The Age Of Scalia, Jamal Greene

Faculty Scholarship

During periods of apparent social dissolution the traditionalists, the true believers, the defenders of the status quo, turn to the past with an interest quite as obsessive as that of the radicals, the reformers, and the revolutionaries. What the true believers look for, and find, is proof that, once upon a time, things were as we should like them to be: the laws of economics worked; the streams of legal doctrine ran sweet and pure; order, tranquility, and harmony governed our society. Their message is: turn back and all will be well.

Synthesis And Functionalization Of A Triaryldiamine-Base Photoconductive/Photorefractive Composite, And Its Application To Aberrated Image Restoration, Yichen Liang

Doctoral Dissertations

"Organic photorefractive (PR) composites have recently emerged as an important class of materials for applications including high-density data storage, optical communication, and biomedical imaging. In an effort to further improve their performance, this study focused on the utilization of functionalized semiconductor nanocrystals to photosensitize triaryamine (TPD)-based PR composites, as well as the application of TPD-based PR composites in the restoration of aberrated optical information. A novel approach to functionalize CdSe quantum dot (QCdSe) was firstly introduced where the sulfonated triarydiamine (STPD) was used as charge-transporting ligand to passivate QCdSe. TPD-based photoconductive and PR composites were photosensitized with the STPD-passivated QCdSe …

The New Gatekeepers: How Blogs Subverted Mainstream Book Reviews, Rebecca E. Johnson

Theses and Dissertations

Book reviewing has a fraught history in the United States. Reviewers have long been accused of not being analytical enough. It should be no wonder then with the emergence of social media that online book reviewing has become increasingly popular. Online reviewers, especially book bloggers, are no literary gatekeepers in their own right, shaping the tastes of readers across the world. Book blogs in particular pay special attention to titles which have long been derided by institutions such as libraries, academia, publishers, and bookstores. These literary gatekeepers typically ignore romance, fantasy, mystery, science fiction, young adult fiction, comic books, and …

The Care Factor: The Importance Of Using Domain Identification Measures To Identify Stereotype Threat Vulnerability In High School Females, Kimberly Y. Randolph

Theses and Dissertations

Abstract

THE CARE FACTOR: THE IMPORTANCE OF USING DOMAIN IDENTIFICATION MEASURES TO IDENTIFY STEREOTYPE THREAT VULNERABILITY IN HIGH SCHOOL FEMALES.

By Kimberly Y. Randolph, PhD

A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University.

Virginia Commonwealth University, 2016.

Major Director: Dr. Charol Shakeshaft, PhD. Professor Department of Educational Leadership

There is a gap that persists in math achievement between high school males and females. Although the NAEP 2015 longitudinal report shows a narrowing in math achievement between males and females there still remains a gap. More importantly, females are …

Investigating The Role Of The Nucleosome Remodeling Factor Ino80 In Development And Nurf In Anti-Tumor Immunity, Zeinab Abdallah Elsayed Ms

Theses and Dissertations

Understanding how an epigenetic regulator such as ATP-dependent chromatin-remodeling complexes modulate processes such as development and/or immune response is essential for our comprehension of cell biology. Deletion of the ATP-dependent chromatin remodeling factor INO80 is known to be embryonically lethal, however, the mechanism is not known. To identify roles for INO80 in mouse early development we generated Ino80 KO mice. Ino80 KO ESCs (Embryonic stem cells) were viable when maintained at ground state pluripotency but fail to differentiate in vitro and in vivo. Gene expression analysis of Ino80 KO early embryos by in situ hybridization showed elevated Bmp4 expression …

University Of Central Florida Libraries, Annual Report 2015-2016, University Libraries

Libraries' Documents

No abstract provided.

The Affordable Care Act Is Not Tort Reform, Andrew F. Popper

Scholarly Articles in Law Reviews & Journals

On March 23, 2010, President Obama signed The Patient Protection and Affordable Care Act (PPACA). Prior to the enactment of the PPACA, Congress held several hearings focused on subrogation and relaxation of collateral source restrictions as well as caps on damages in an effort to promote tort reform. While the ACA included provisions on medical liability reform, the suggested tort reform was thwarted, and the ACA had no actual legal effect on limiting medical malpractice liability. This article argues that the reality is that the PPACA has done nothing to change the admissibility of collateral sources nor has it enhanced …

Arbitrary Detention? The Immigration Detention Bed Quota, Anita Sinha

Scholarly Articles in Law Reviews & Journals

When President Obama took office in 2009, Congress through appropriations linked the U.S. Department of Homeland Security’s (DHS) funding to “maintaining” 33,400 immigration detention beds a day. This provision, what this Article refers to as the bed quota, remains in effect, except now the mandate is 34,000 beds a day. Since 2009, DHS detentions of non-citizens have gone up by nearly 25 percent. To accommodate for this significant spike over a relatively short period of time, the federal government has relied considerably on private prison corporations to build and operate immigration detention facilities.

This Article takes a comprehensive look at …

Student Loan Derivatives: Improving On Income-Based Approaches To Financing Law School, Benjamin Leff, Heather Hughes

Scholarly Articles in Law Reviews & Journals

No abstract provided.

Food Stamps, Unjust Enrichment And Minimum Wage, Candace Kovacic-Fleischer

Scholarly Articles in Law Reviews & Journals

A number of large retail chains with monopsony power, such as Walmart, pay their low level employees so little that these employees are eligible for food stamps and other governmental benefits. In addition to paying low wages, these chains often have hourly restrictions so that their employees are not eligible for overtime pay. At times the chains violate the wage and hour provisions of the Fair Labor Standards Act (FLSA) by making hourly employees work “off the clock,” a practice known as wage theft.

One of the reasons these low wage retailers can pay so little is because their employees …