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Electron Beam Polarization Measurement Using Touschek Lifetime Technique

Description: Electron beam loss due to intra-beam scattering, the Touschek effect, in a storage ring depends on the electron beam polarization. The polarization of an electron beam can be determined from the difference in the Touschek lifetime compared with an unpolarized beam. In this paper, we report on a systematic experimental procedure recently developed at Duke FEL laboratory to study the radiative polarization of a stored electron beam. Using this technique, we have successfully observed the radiativ… more
Date: August 24, 2012
Creator: Sun, Changchun; Li, Jingyi; Mikhailov, Stepan; Popov, Victor; Wu, Wenzhong; Wu, Ying et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Factors Affecting Faculty Use Of Learning Object Repositories: An Exploratory Study Of Orange Grove And Wisc-online

Description: The purpose of this study was to identify factors that motivate or impede faculty use of learning object repositories (LORs). The unified theory of acceptance and use of technology (UTAUT) served as the theoretical framework for this study. Both quantitative and qualitative approaches were used in the study to explore two research questions relating to factors affecting faculty use of LORs. Research subjects were faculty and instructional staff users from two LORs: Orange Grove and Wisc-Online.… more
Date: December 2011
Creator: Xu, Hong
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

An Event Model for Herbarium Specimen Data in XML [Poster]

Description: Poster presented at the 2010 Taxonomic Database Working Group Meeting. This poster discusses the Apiary Project, a collaboration of the Texas Center for Digital Knowledge at the University of North Texas and the Botanical Research Institute of Texas.
Date: 2010
Creator: Moen, William E.; Neill, Amanda K.; Best, Jason H.; McCotter, Melody; Xu, Hong & Huang, Jane Q.
Item Type: Refine your search to only Poster
Partner: UNT College of Information
open access

An Event Model for Herbarium Specimen Data in XML Poster Abstract

Description: This abstract describes a poster about the Apiary Project. The Apiary Project, a collaboration of the Texas Center for Digital Knowledge at the University of North Texas and the Botanical Research Institute of Texas, is building a framework and web-based workflow for the extraction and parsing of herbarium specimen data. The workflow will support the transformation of written or printed specimen data into a high-quality machine-processable XML format. This poster describes an event model that i… more
Date: 2010
Creator: Moen, William E.; Neill, Amanda K.; Best, Jason H.; McCotter, Melody; Xu, Hong & Huang, Jane Q.
Item Type: Refine your search to only Text
Partner: UNT College of Information
open access

An Issue of Granularity: Decomposing Redesigned Courses on Different Levels of Details

Description: This paper discusses a project to redesign courses on different levels of details. The Texas Course Redesign Project initiated by the Texas Higher Education Coordinating Board (THECB) aims to develop and distribute instructional resources to improve student learning outcomes and lower the costs of higher education.
Date: 2008
Creator: Li, Fei; Polyakov, Serhiy; Barnes, Svetlana; Moen, William E. & Xu, Hong
Item Type: Refine your search to only Paper
Partner: UNT College of Information
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