637 results on '"Atkinson, Terry"'
Search Results
2. Using MOBNET (mobilization network) to plan for mobilization
- Author
-
Atkinson, Terry
- Subjects
MOBILIZATION, MILITARY - United States - Abstract
illus
- Published
- 1991
3. From Idea to Reality
- Author
-
Atkinson, Terry S., primary, Anderson, Kimberly L., additional, Swaggerty, Elizabeth A., additional, and Rowe, Marjorie W., additional
- Published
- 2022
- Full Text
- View/download PDF
4. Exploring the Short-Term Impacts of a Community-Based Book Distribution Program
- Author
-
Anderson, Kimberly L., Atkinson, Terry S., Swaggerty, Elizabeth A., and O'Brien, Kevin
- Abstract
This article presents findings from the first year of a multiyear investigation of the implementation of the Dolly Parton Imagination Library (DPIL) book distribution program as part of one community's long-term initiative to improve early literacy skills. The authors describe (a) the study's logic model and associated theory of change, (b) findings and their connection to the short-term outcomes in the model, and (c) findings-based adjustments to the model. When compared to parent reports from the baseline year, Year 1 parents of rising kindergartners reported greater frequency of shared book reading (SBR), greater engagement with their children during SBR, and greater children's interest in being read to. Findings also revealed the need for additional strategies to support DPIL enrollment and maximize family SBR experiences.
- Published
- 2019
- Full Text
- View/download PDF
5. Examining Relationships between Home-Based Shared Book Reading Practices and Children's Language/Literacy Skills at Kindergarten Entry
- Author
-
Anderson, Kimberly L., Atkinson, Terry S., Swaggerty, Elizabeth A., and O'Brien, Kevin
- Abstract
At start-up of a book distribution programme (Dolly Parton's Imagination Library) in a southeastern United States community, we examined baseline relationships between at-home shared book reading (SBR) and children's language/literacy abilities and skills at kindergarten entry. One hundred fifty-two parent/child dyads participated; children (53% male) had a mean age of 5 years, 6 months. Survey data included family demographics, SBR frequency and practices, and children's interest in reading. Household income and parent education level were positively associated with SBR frequency. Relationships between SBR frequency and children's performance on measures of print concepts/ reading behaviours, narrative retelling, narrative comprehension, and interest in reading were statistically significant. Performance on a letter naming fluency and phonemic segmentation measure was significantly related to the SBR practice of stopping to ask the child about letters or words but not to SBR frequency. Differential associations are discussed in terms of constrained and unconstrained abilities and skills, with implications for future research.
- Published
- 2019
- Full Text
- View/download PDF
6. Stossel in America: A Case Study of the Neoliberal/Neoconservative Assault on Public Schools and Teachers
- Author
-
Gabbard, David and Atkinson, Terry
- Abstract
This article aims to help those who support the pivotal role of public education in promoting a critically informed and actively engaged democratic citizenry understand what the American Federation of Teachers (2006) inaccurately describes as "The John Stossel Agenda." In his "20/20 Report," "Stupid in America: How Lack of Choice Cheats Our Kids Out of a Good Education," aired on American Broadcasting Company (ABC), John Stossel functioned as an agent of an agenda, but not as its source. The agenda in question pursues the pragmatic aims of two mutually reinforcing ideologies: neoliberalism and neoconservatism. Here, the authors begin with an exacting analysis of the specific variety of liberalism advanced by the forces of neoliberal ideology. They demonstrate how the attack on public schools represents a small part of a much larger attack on the public and its role in a liberal, constitutional democracy. While the authors laud the open letters written to ABC in protest of Stossel's "Stupid in America" by the National Parent Teachers Association (2006) and the National School Boards Association (2006), as well as the report issued by the American Federation of Teachers, they urge everyone concerned with the future of the schools to look beyond John Stossel. The authors hope that teachers and teacher educators everywhere can now understand that the neoliberal/neoconservative agenda places more than the future of public schools at risk.
- Published
- 2007
7. Voices in Videoconferencing: Technology Integration in Teacher Education Courses
- Author
-
O'Connor, Katherine A., Atkinson, Terry S., Matusevich, Melissa N., Greene, H. Carol, Pope, Carol, and Good, Amy J.
- Abstract
This manuscript describes the efforts of several instructors who incorporated videoconferencing in their teacher education courses at two large universities in the southeastern United States. Professors preparing teachers to teach elementary and middle school examined their interactive videoconference experiences linking preservice teachers with students in real classroom settings. Three projects are described. The first project involved "teleobservation" whereby professors co-taught with K-6 classroom teachers while preservice teachers observed. The second project focused on a middle-grades English Language Arts professor whose preservice teachers observed middle school students in real time. In the third project, a university professor served as a live audience for an elementary Reader's Theatre performance. The lessons learned through the evaluation of these three projects are discussed.
- Published
- 2007
8. Hands Off--It's My Go! IT in the Languages Classroom.
- Author
-
Centre for Information on Language Teaching and Research, London (England). and Atkinson, Terry
- Abstract
This guide, designed for British modern language teachers, explores the potential of informational technology (IT) to help educators meet the objectives of the National Curriculum. An introductory chapter discusses the role of IT as specified in the curriculum, including both instruction in use of IT and use of IT to enhance classroom instruction. The second chapter addresses issues in planning for IT use, including location of resources, integrating IT into the modern language lesson, and long-range applications to solve instructional challenges such as individual differences in progress and ability, use of supplementary resources, increasing target language use situations, and interdisciplinary projects. Chapter 3 summarizes the hardware and software available for language teaching. Chapter 4 looks at specific applications in greater detail, including word processing, text manipulation programs, concept keyboard use, databases, and electronic mail. Miscellaneous hardware and software with applications to language teaching are also considered here. The fifth chapter examines ways in which IT use in modern languages is likely to develop over the next few years. Appended materials include instructions for routine tasks at the computer (e.g., formatting a disk), instructions for the concept keyboard and for a specific program, and addresses of software publishers. (MSE)
- Published
- 1992
9. Using Word Study Instruction with Developmental College Students
- Author
-
Atkinson, Terry S., Zhang, Guili, and Phillips, Shannon F.
- Abstract
This study investigates the effect of word study instruction on the orthographic knowledge of college students enrolled in a developmental reading course. Results revealed significantly greater improvement in orthographic knowledge in students who received word study instruction when compared with those in a control group, suggesting that the word study approach was effective for these students. Because of the influence of orthographic knowledge on spelling, writing and reading, additional research is merited to examine how word study intervention impacts the reading behaviours and academic achievement of college students enrolled in developmental education courses.
- Published
- 2014
- Full Text
- View/download PDF
10. Examining the Forces That Guide Teaching Decisions
- Author
-
Griffith, Robin, Massey, Dixie, and Atkinson, Terry S.
- Abstract
This study of two successful first grade teachers examines the forces that guide their instructional decisions. Findings reveal the complexities of forces that influence the moment-to-moment decisions made by these teachers. Teachers repeatedly attempted to balance their desires to be student-centered while addressing state standards and implementing their schools' adopted curricula, with varying levels of success. The teachers' professional knowledge was the determining factor in that success. Levels of professional development and the professional learning communities of these two teachers and the contexts in which they were operating influenced their attention to certain forces. Findings from this study indicate that building teachers' professional knowledge through coaching and long-term professional development can improve teacher decision making
- Published
- 2013
11. Reading
- Author
-
Atkinson, Terry S., primary
- Published
- 2017
- Full Text
- View/download PDF
12. Empowering Fourth-Grade Researchers: Reaping the Rewards of Web 2.0 Student-Centered Learning
- Author
-
Atkinson, Terry S. and Swaggerty, Elizabeth A.
- Abstract
NCTE's Framework for 21st Century Literacies (2008) prompted collaboration between a university professor and classroom teacher resulting in a professional inquiry project utilizing a Web 2.0 tool, Scrapblog, with fourth-grade students. This article describes implementation of this project, including both challenges and positive outcomes. The authors found that the effort paid dividends in terms of student engagement ("Please, can I work on my Scrapblog?"), student empowerment (shift the responsibility for learning to the student), and collaboration (among university professor, classroom teacher, and students). Specific recommendations for moving beyond traditional literacy instruction practices and delving into 21st Century Web 2.0 learning experiences are included. (Contains 3 figures.)
- Published
- 2011
13. Academic Writing Retreat: A Time for Rejuvenated and Focused Writing
- Author
-
Swaggerty, Elizabeth A., Atkinson, Terry S., and Faulconer, Johna L.
- Abstract
The purpose of this article is to describe the impact of a three-day academic writing retreat on the writing lives of four female university faculty members. Goals of the retreat included rejuvenating their writing lives, focusing their research agendas, improving their writing, and engaging in concentrated blocks of writing and collaborative discussion about their scholarly work. Results indicate that the writing retreat had a positive impact on group members, especially in terms of rejuvenating their writing lives, and highlight the merit of concentrated blocks of writing time and collaborative discussion about writing.
- Published
- 2011
14. Making Science Trade Book Choices for Elementary Classrooms
- Author
-
Atkinson, Terry S., Matusevich, Melissa N., and Huber, Lisa
- Abstract
Teachers often use science trade books in the classroom for a number of reasons: to enhance science instruction, to augment an adopted science textbook, or to integrate literacy with subject-area content. Using Patricia Hunsader's mathematics trade book evaluation rubric published in the April 2004 issue of "Reading Teacher" as a model, the authors present a rubric useful in assessing both the science and literacy value of science trade books. After using the instrument to evaluate 28 science trade books suggested by a science textbook publisher, the authors determined that the quality of science trade books varies greatly. Based on initial pilot testing, the rubric developed in this study served as an effective tool for beginning teachers as they selected science trade books for elementary classroom use. (Contains 2 tables and 2 figures.)
- Published
- 2009
- Full Text
- View/download PDF
15. Establishing Professional Development Partnerships Online: Reaching Out to Veteran Teachers
- Author
-
Atkinson, Terry S. and O'Connor, Katherine A.
- Abstract
This article describes a study on the module-based online professional development project. The professional development model providing a basis for the Reading CEU (continuing education unit) Module Project involved four groups of stakeholders: master teacher instructors, module participants, module developers, and the university support team. Master teacher instructors, chosen based on existing collegial relationships with professors or module developers, co-developed and facilitated individual reading modules. Master teacher instructors interacted with participants by providing them with ongoing guidance and feedback about reading methodology implementation. Multiple data sources were analyzed in an effort to triangulate study data. Feedback from module participants was collected at the end of each month with an evaluation survey completed on a voluntary basis. Numerous themes emerged as data sources were analyzed, resulting in subsequent study findings. Benefits of the Reading CEU Module Project most frequently noted focused on the importance of practical implementation with students, student academic gains, participant growth and reflection, teachers' assumption of leadership roles, multiple resource availability, online accessibility and design, and consideration of "out of workforce" teachers. (Contains 1 table and 1 figure.)
- Published
- 2007
- Full Text
- View/download PDF
16. Who's Teaching, Who's Learning? Analyzing the Professional Growth of Graduate Student Tutors
- Author
-
Atkinson, Terry S. and Colby, Susan A.
- Abstract
This qualitative study examined the professional growth of literacy teachers as they scaffolded students' one-to-one literacy learning within a university reading clinic tutoring experience. These teachers--graduate students within a reading education program--documented both their own learning and that of their students through various venues. These included the data sources considered for this study: teaching videotapes, email correspondence with the university instructor, online discussions with colleagues, and final reflective essays. Findings suggested that substantive learning by these literacy teachers influenced not only their tutees but also their own professional growth, impacting their classroom practice and the wider educational community. Implications of such teacher learning within educational settings employing high-stakes testing and accountability were considered. (Contains 1 figure.)
- Published
- 2006
- Full Text
- View/download PDF
17. Building Their Stories: Electronic Case Studies of Struggling Readers
- Author
-
Atkinson, Terry S. and Williams, Sarah C.
- Abstract
Ten university graduate students created electronic case studies describing the learning of struggling readers as a part of this study designed to yield insights about literacy education and the efficacy of electronic case study development. A variety of data, analyzed through a qualitative content analysis, revealed understandings regarding participants' perceptions about themselves as learners, ideas about their influences on students, and revelations about literacy instruction. A final theme revealed that, as participants reflected upon their own learning; they also voiced a commitment to literacy teaching that went beyond their personal classroom settings. Further, researchers gained insights about how to better prepare literacy educators, as well as how to more effectively integrate technology into the case study process.
- Published
- 2006
18. Assisting Performance in Teaching and Learning
- Author
-
Colby, Susan A. and Atkinson, Terry S.
- Abstract
Although Vygotskian principles involving the Zone of Proximal Development (ZPD) are hailed as tenets undergirding teaching and learning within a constructivist setting, these principals have not been implemented widely within school classrooms. Tharp and Gallimore, building on the notion that learning can be maximized when a teacher has a heightened awareness of a student's ZPD and stimulates new learning based upon this understanding, argue that true teaching is a matter of "assisting performance". This study examines the efforts of one university instructor to assist the performance of her graduate students as they learned to teach, scaffold and support struggling readers. The findings suggest that the university instructor successfully assisted her students by providing supportive feedback, extending their learning and providing appropriate resources through ongoing Email correspondence and face-to-face meetings and tutoring sessions. Success was attributed to the instructor's extensive knowledge of supporting struggling readers, awareness of her students' ZPD's in relation to the context of their learning and her efforts to consistently provide appropriate and specific feedback through iterative dialogue.
- Published
- 2004
- Full Text
- View/download PDF
19. An Optical Diagnostic Beamline for the Bessy II Booster
- Author
-
Atkinson, Terry, Hwang, Ji-Gwang, Rehm, Guenther, Ries, Markus, Schiwietz, Gregor, and Wiese, Stefan
- Subjects
01 Overview and Commissioning ,Accelerator Physics - Abstract
As part of the global refurbishment of the injector at BESSY II, a new optical beamline has been installed in the booster. This paper covers the conceptual design: incorporating the beamline into an operational facility without downtime, the simulation and expectations of the optical transport line, mechanical installation and commissioning with beam. These first results with the present beam delivery system have already achieved source point imaging and bunch length measurements using a fast diode. With the additional PETRA cavity installed for this booster upgrade and connection to acquire RF power in the 2022 summer shutdown planned, the bunch length diagnostics are critical. The beamline will also undergo a final mechanical upgrade and then see the installation of a streak camera., Proceedings of the 11th International Beam Instrumentation Conference, IBIC2022, Kraków, Poland
- Published
- 2022
- Full Text
- View/download PDF
20. Reading Instruction for the Struggling Reader: Implications for Teachers of Students with Learning Disabilities or Emotional/Behavioral Disorders.
- Author
-
Atkinson, Terry S., Wilhite, Kathi L., and Frey, Laura M.
- Abstract
This article discusses the difficulties in meeting the needs of diverse student populations including those with learning and/or behavioral difficulties while meeting the demands of standards and accountability. It stresses the importance of matching the reading instructional program to the specific needs of the student and fine-tuning strategies based on individual needs, while best practices guide program design. (Contains references.) (DB)
- Published
- 2002
21. Dealing with Disengagement through Diversity: An Electronic Curriculum for Cultural Relevance.
- Author
-
Gabbard, David A., L'Esperance, Mark, Perez, Theresa, and Atkinson, Terry
- Abstract
Examines specific features of the online Blackboard distance learning platform that enhance the advantages of alternative teacher certification programs, especially with regard to helping teachers develop a culturally relevant pedagogy. Focuses on North Carolina's NCTeach program, which provides an accelerated certification process for people currently employed by schools who did not earn their provisional teaching licenses via the traditional route. (SM)
- Published
- 2002
22. 'We're Not Just Whistling Dixie': Policymakers' Perspectives on State Education Reform.
- Author
-
Atkinson, Terry S.
- Abstract
Examines the impetus for and impact of a high-stakes assessment plan and reform initiative, North Carolina's ABC Plan for Public Education, from the perspective of state level policymakers and local level implementers. Finds practitioners received little support for implementing the initiative, and an adversarial relationship developed between local and state level implementers. Suggests policymakers and practitioners alike could collaboratively focus on more fruitful and effective future visions for educational reform. (RS)
- Published
- 2002
23. Cognitive and Motivational Effects of Seeking Academic Assistance.
- Author
-
Miller, Samuel D. and Atkinson, Terry S.
- Abstract
Investigated how various classroom practices ameliorated or undermined one high school students' efforts to gain assistance for his academic difficulties. Data from school documentation, evaluation reports, study materials, and interviews with key persons indicated that none of his psychoeducational evaluations considered the quality of classroom instruction, school grading practices, or study strategies, all of which increased his vulnerability to risk. (SM)
- Published
- 2001
24. Learning To Teach Struggling (and Non-Struggling) Elementary School Readers: An Analysis of Preservice Teachers' Knowledges.
- Author
-
Duffy, Ann M. and Atkinson, Terry S.
- Abstract
Describes elementary school preservice teacher's beliefs, understandings, and instruction of struggling and non-struggling readers as they evolved over time. Finds the preservice teachers improved in their abilities to integrate their personal, practical, and professional knowledges to inform their reading instruction. Suggests how university reading education courses may support the learning and development of future preservice teachers. (SG)
- Published
- 2001
25. Phantoms of the Studio
- Author
-
Atkinson, Terry
- Published
- 1990
26. Liberating The Learner
- Author
-
Atkinson, Terry, primary
- Published
- 2013
- Full Text
- View/download PDF
27. The Journey from Dissenter to Advocate
- Author
-
Atkinson, Terry S., primary
- Published
- 2013
- Full Text
- View/download PDF
28. Learning to Read His Own Way
- Author
-
Atkinson, Terry S., primary
- Published
- 2012
- Full Text
- View/download PDF
29. Recent Progress of Bunch Resolved Beam Diagnostics for BESSY VSR
- Author
-
Hwang, Ji-Gwang, Atkinson, Terry, Goslawski, Paul, Jankowiak, Andreas, Koopmans, Marten, Mertens, Tom, Ries, Markus, Schälicke, Andreas, and Schiwietz, Gregor
- Subjects
Physics::Accelerator Physics ,5. Longitudinal diagnostic and synchronization ,Accelerator Physics - Abstract
BESSY VSR is an upgrade project of the existing storage ring BESSY II to create long and short photon pulses simultaneously for all beam lines by installing additional superconducting cavities with harmonic frequencies of 1.5 GHz and 1.75 GHz. The storage-ring operation will be influenced by a transient beam-loading effect of all cavities and by the complex filling pattern due to the disparity in the current of long and short bunches. This, in turn, could introduce a variation of beam trajectory, transverse profile, and length for the different bunches. This stimulates the development of bunch-resolved monitors for bunch length, beam size, filling pattern and beam trajectory displacement. In this paper, we show new developments of crucial beam diagnostics including measurements of the bunch-resolved temporal profile with a resolution of less than 1 ps FWHM and bunch-resolved profile with a resolution of less than 10 um rms. The upgrade of the booster beam-diagnostics will be discussed as well., Proceedings of the 7\textsuperscript{th} Int. Beam Instrumentation Conf., IBIC2018, Shanghai, China
- Published
- 2019
- Full Text
- View/download PDF
30. Two Orbit Operation at Bessy II - During a User Test Week
- Author
-
Goslawski, Paul, Andreas, Felix, Armborst, Felix, Atkinson, Terry, Feikes, Joerg, Jankowiak, Andreas, Li, Ji, Mertens, Tom, Ries, Markus, Schälicke, Andreas, Schiwietz, Gregor, and Wüstefeld, Godehard
- Subjects
Physics::Accelerator Physics ,MC2: Photon Sources and Electron Accelerators ,Accelerator Physics - Abstract
Operating a storage ring close to a horizontal resonance and manipulating the transverse non-linear beam dynamics can generate stable Transverse Resonance Island Buckets (TRIBs), which give a 2nd stable orbit in the ring. Both orbits can be populated with different electron bunch filling patterns and provide two different radiation sources to the user community. Such a machine setting has been established at BESSY II and was tested under realistic user conditions in a first ’TRIBs/Two Orbit User Test Week’ in February 2018. Results and user feedback will be discussed in this contribution., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia
- Published
- 2019
- Full Text
- View/download PDF
31. A Longitudinal Kicker Cavity for the BESSY II Booster
- Author
-
Atkinson, Terry, Dirsat, Marc, Flisgen, Thomas, Matveenko, Alexander, Schälicke, Andreas, Schriefer, Bernhard, and Tamashevich, Yegor
- Subjects
Physics::Instrumentation and Detectors ,Physics::Accelerator Physics ,Feedback and beam stability ,Accelerator Physics - Abstract
As part of the global refurbishment of the injector systems at BESSY II, a new longitudinal kicker cavity and suitable feedback will be installed in the booster. Both a flexible bunch charge and spacing is essential for efficient injection. Such a cavity is needed to mitigate the unwanted couple bunch instabilities associated with these elaborate filling patterns and the HOMs of additional accelerating structures. This paper covers the conceptual design, simulation strategy, manufacture and bench tests of the longitudinal kicker cavity before it is installed in the ring., Proceedings of the 8th International Beam Instrumentation Conference, IBIC2019, Malmö, Sweden
- Published
- 2019
- Full Text
- View/download PDF
32. Short-day weight loss and effect of food deprivation on hypothalamic NPY abd CRF mRNA in Djurngarian hamsters
- Author
-
Mercer, Julian G., Lawrence, C. Bruce, Moar, Kim M., Atkinson, Terry, and Barrett, Perry
- Subjects
Neuropeptide Y -- Research ,ACTH -- Research ,Messenger RNA -- Research ,Hamsters -- Research ,Biological sciences - Abstract
The effect of food deprivation on hypothalamic neuropetide Y and corticotropin-releasing factor gene expression in the Djungarian hamster was investigated. The study cloned cDNA from the animals to examine the ob gene expression. Results indicated that neuroendocrine consequences of food deprivation in the hamsters were determined by some factor aside from body mass such as the size of adipose tissue reserves. Furthermore, food-deprived hamsters experienced reduced plasma insulin concentrations.
- Published
- 1997
33. Hypothalamic NPY and prepro-NPY mRNA in Djungarian hamsters: effects of food deprivation and photoperiod
- Author
-
Mercer, Julian G., Lawrence, C. Bruce, Beck, Bernard, Burlet, Arlette, Atkinson, Terry, and Barrett, Perry
- Subjects
Neuropeptide Y -- Research ,Weight loss -- Physiological aspects ,Photoperiodism -- Physiological aspects ,Hamsters -- Psychological aspects ,Biological sciences - Abstract
The Djungarian hamster is able to adjust to seasons of low food availability and shorter photoperiods by altering its food intake and maintaining lower body weight. The adjustment mechanism for feeding may be mediated by neuropeptide Y, which is found in the hypothalamus. Hamsters that were given only small amounts of food and exposed to short photoperiods were found to increase the production of neuropeptide Y as well as mRNA coding for the protein precursor to neuropeptide Y.
- Published
- 1995
34. Injection and Bunch Length Studies at the BESSY II Storage Ring
- Author
-
Malyutin, Dmitriy, Atkinson, Terry, Goslawski, Paul, Jankowiak, Andreas, Matveenko, Alexander, and Ries, Markus
- Subjects
Physics::Accelerator Physics ,4 Time-Resolved Diagnostics and Synchronization ,Accelerator Physics - Abstract
To improve the injection process into the BESSY II storage ring and allow for high injection efficiencies in all operational modes, one needs to know the development of the bunch length during acceleration in the booster synchrotron up to the extraction point. It will become even more important for the future BESSY VSR upgrade when high efficiency injection into much shorter RF buckets needs to be guaranteed. Measurements of bunch phase and energy during injection in the storage ring are presented. Studies of the bunch length evolution during the energy ramp of the booster are described. Results are compared with numerical simulations and discussed., Proceedings of the 6th Int. Beam Instrumentation Conf., IBIC2017, Grand Rapids, MI, USA
- Published
- 2018
- Full Text
- View/download PDF
35. IBS Studies at BESSY II and MLS
- Author
-
Mertens, Tom, Atkinson, Terry, Feikes, Joerg, Goslawski, Paul, Hwang, Ji-Gwang, Jankowiak, Andreas, Li, Ji, Malyutin, Dmitriy, Petenev, Yuriy, Ries, Markus, and Seiler, Inés
- Subjects
05 Beam Dynamics and EM Fields ,D02 Non-linear Single Particle Dynamics ,Accelerator Physics - Abstract
Intrabeam Scattering (IBS) effects will become a limiting factor for the attainable emittances and single-bunch currents in future electron storage rings and light sources. IBS studies were performed for BESSY II at the Helmholtz-Zentrum Berlin (HZB) and for the Metrology Light Source (MLS) at the Physikalisch-Technische Bundesanstalt (PTB) to quantify the IBS contributions to equilibrium beam sizes in these machines and make predictions for the BESSY II upgrade project, BESSY VSR. The energy dependence of IBS effects (γ −4 ) makes especially the MLS machine susceptible to IBS effects due to the relatively low energy ranges at which it can be operated (50 MeV-630 MeV). We compare experimental data with simulations and present IBS simulation results for BESSY VSR., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada
- Published
- 2018
- Full Text
- View/download PDF
36. Book Review: The Potential of Collective Impact: Moving the Work of Literacy Coalitions Forward
- Author
-
Atkinson, Terry, primary and Anderson, Kimberly, additional
- Published
- 2019
- Full Text
- View/download PDF
37. Orbit Measurements in the BESSY II Booster in Preparation for Quasi-Low-Alpha Operation
- Author
-
Atkinson, Terry, Motuk, Erdem, Ries, Markus, and Ulrich, Michael
- Subjects
06 Beam Instrumentation, Controls, Feedback and Operational Aspects ,Accelerator Physics - Abstract
Diagnostic refurbishments are ongoing in the booster synchrotron in preparation for the near future Variable pulse Storage Ring (VSR) project at BESSY II. Essential orbit measurements have been re-installed after almost two decades of latency. This diagnostic will help assess the effectiveness of the possible upgrade scenarios such as quasi-low-alpha operation and extraction optimization. The contribution presents the preliminary results of the continual global upgrade of the injector systems., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark
- Published
- 2017
- Full Text
- View/download PDF
38. Virginia's revenue forecasting process and models
- Author
-
Jonas, Kirk, Rest, Gregory J., and Atkinson, Terry
- Subjects
Virginia -- Accounting and auditing ,Forecasting -- Analysis ,Tax revenue estimating -- Analysis ,Banking, finance and accounting industries ,Business ,Government - Abstract
The Joint Legislative Audit and Review Commission evaluated the forecasting process and state revenue models employed by the state of Virginia in 1990. The audit group found that while the model assumptions, predictor variables and mathematics of the models were in order, improvements for the analysis of forecast errors, forecast review and documentation and accounting for regional conditions are recommended. Using questionable data to estimate the impact of tax policy on revenues and inadequate documentation may account for inaccurate predictions.
- Published
- 1992
39. Examining relationships between home-based shared book reading practices and children’s language/literacy skills at kindergarten entry
- Author
-
Anderson, Kimberly L., primary, Atkinson, Terry S., additional, Swaggerty, Elizabeth A., additional, and O’Brien, Kevin, additional
- Published
- 2018
- Full Text
- View/download PDF
40. Status and Prospects of the BESSY II Injector System
- Author
-
Atkinson, Terry, Anders, Wolfgang, Glass, Holger, Goslawski, Paul, Jankowiak, Andreas, Kramer, Felix, Kuske, Peter, Malyutin, Dmitriy, Matveenko, Alexander, Neumann, Axel, Ries, Markus, Ruprecht, Martin, Schälicke, Andreas, Schneegans, Tobias, Schüler, Dirk, Volz, Paul, and Wüstefeld, Godehard
- Subjects
Physics::Instrumentation and Detectors ,Physics::Accelerator Physics ,02 Photon Sources and Electron Accelerators ,Accelerator Physics - Abstract
The BESSY II injector system consists of a 50 MeV Linac, installed in preparation for TopUp operation, and a 10 Hz fast-ramping booster synchrotron. The system provides injection efficiencies into the BESSY II storage ring well above 90 % . This contribution reports on the present status, measurements of energy acceptance and other essential beam parameters as well as studies on coupled-bunch-by-bunch instability. Requirements for BESSY-VSR and possible upgrade scenarios are discussed., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea
- Published
- 2016
- Full Text
- View/download PDF
41. The Bessy Vsr Project for Short X-Ray Pulse Production
- Author
-
Jankowiak, Andreas, Anders, Wolfgang, Atkinson, Terry, Burrill, Andrew, Ehmler, Hartmut, Föhlisch, Alexander, Goslawski, Paul, Holldack, Karsten, Knobloch, Jens, Kuske, Peter, Malyutin, Dmitriy, Matveenko, Alexander, Müller, Roland, Neumann, Axel, Ott, Klaus, Ries, Markus, Ruprecht, Martin, Schälicke, Andreas, Vélez, Adolfo, and Wüstefeld, Godehard
- Subjects
02 Photon Sources and Electron Accelerators ,Accelerator Physics - Abstract
HZB has started the innovative project, BESSY VSR, to upgrade the 1.7 GeV synchrotron radiation source BESSY II. Its goal is to provide both 1.7 ps and 15 ps long, intense X-ray pulses simultaneously at all beam lines. These pulses are generated by enhanced longitudinal bunch focusing using superconducting 5-cell cavities operating at 1.5 GHz and 1.75 GHz. The resulting beating of the voltages creates alternating long and short buckets that can be custom filled. As a first major step, prototype superconducting cavities, initially only cooled to 4.4 K and thus operating at reduced voltage, will be installed into the BESSY II storage ring. Physical and technical aspects of this proposal where recently studied* and the results and project status are presented., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea
- Published
- 2016
- Full Text
- View/download PDF
42. Modeling of magnetic optic for the short pulse mode operation of Energy Recovery Linac based light sources
- Author
-
Atkinson, Terry, Matveenko, Alexander, Jaeschke, Eberhard, and Aulenbacher, Kurt
- Subjects
Emittanz Erhaltung ,longitudinale Strahlinstabilitäten ,beam dynamics ,synchrotron radiation ,start-to-end simulations ,Femto Sekunden Licht Pulse ,femtosecond short bunches ,UN 6190 ,Synchrotronstrahlung ,longitudinal instability ,530 Physik ,29 Physik, Astronomie ,Start-to-End Simulationen ,ERL ,emittance growth suppression ,ddc:530 ,Strahldynamik ,Linearbeschleuniger mit Energie Rückgewinnung - Abstract
Das Forschungsfeld der Synchrotronstrahlungsquellen hat sich in den letzen Jahren entscheidend weiterentwickelt. Alle Zukunftsideen, unabhängig von ihrer Komplexität, haben dennoch eines gemeinsam: die Erzeugung kurzer Pulse. Die Naturwissenschaften haben die Spitzenbrillanz, die mit Hilfe kürzester Pulse produziert werden kann, als neues Schlüsselwerkzeug entdeckt. Die Nutzergemeinschaft verlangt nicht mehr nur ein statisches Bild, sondern vielmehr eine Reihe von bewegten Aufnahmen atomarer Substrukturen und den dazugehöringen Prozessen. Existierende dritte Generation Synchrotronstrahlungsquellen werden an die neuen Herausforderungen angepasst: Verbesserungen an der Magnet-Optik sowie der Einbau modernster Beschleunigertechnologie ermöglichen die Erzeugung kürzester Pulse mit höchster Brillanz für zeitaufgelöste Experimente. Ein möglicher Kandidat für die Lichtquelle der nächsten Generation ist ein Linear-Beschleuniger mit Energierückgewinnung. Durch die Verwendung langer Beschleunigungsstrukturen kann es, selbst bei hohen Energien, nicht zur Ausbildung des Emittanzgleichgewichts wie in Speicherringen kommen. Durch die Verwendung Impulsabhängiger-Umlaufbahnen und der Rückgewinnung der Strahlenergie ist es mit `Energy Recovery Linac'' (ERL)-basierten Quellen energieeffizient möglich, hochenergetische Elektronen-Pulse im Femtosekundenbereich zu erzeugen. Die longitudinale Elekronstrahldynamik solcher ERLs ist eines der Hauptthemen dieser Arbeit. Umfangreiche Simulationen über die gesamte Maschine wurden im Rahmen der `Femto-Science Factory'' Lichtquellen Studie durchgeführt. Die Begrenzungen des Kurzpulsmodus Betriebes wurden untersucht und mit den Erwartungen verglichen. Besondere Aufmerksamkeit lag dabei auf den 6D Elektronenstrahleigenschaften, insbesondere auf der Vermeidung von Strahlaufweitungen, die mit der Erzeugung von Ultra-Kurzpulsen einhergehen können. Synchrotron light sources are entering a new era. No matter how elaborate, all the next generation proposals share a common necessity; the production of ultra-short electron bunches. There is an evolution in the field of science under investigation using the high peak brilliance generated from such bunches. The user community is demanding not just pictures but videos of atomic substructures and the processes that define them. Existing 3rd generation facilities are modifying their magnetic lattices and upgrading the acceleration schemes in order to keep up with this trend of generating short pulses with ultimate brilliance for time resolved experiments. A possible candidate for the next generation light source is one based on ERL technology. Using long linacs to accelerate to high energies overcomes the present limitation of emittance equilibrium in storage rings. By implementing independent arcs for acceleration and deceleration while recuperating the beams energy, ERL based sources are theoretically capable of efficiently producing high energy femtosecond long bunch lengths. The study of the longitudinal motion of the beam through single pass magnetic optic in combination with linacs is the main topic of this thesis. Dedicated start-to-end simulations in the framework of the Femto-Science Factory large scale light source are undertaken. The expectations and restrictions on the short pulse mode (SPM) operation are comprehensively examined in this work. Particular attention is given to the 6D electron beam properties and with it the beam degradation caused by the production of ultra-short bunches.
- Published
- 2015
43. The Femto-Science Factory: A Multi-turn ERL Based Light Source
- Author
-
Atkinson, Terry, Bondarenko, Alexey, Matveenko, Alexander, and Petenev, Yuriy
- Subjects
Physics::Accelerator Physics ,WG6 ERLs ,Accelerator Physics - Abstract
A 6 GeV multi-turn energy recovery linac as a diffraction limited source of synchrotron radiation has been investigated at HZB. An overview of the conceptual design with respect to facility layout, operation modes and the expectations of the beam parameters will be presented., Proceedings of the 56th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs, ERL2015, Stony Brook, NY, USA
- Published
- 2015
- Full Text
- View/download PDF
44. The Potential of Collective Impact: Moving the Work of Literacy Coalitions Forward.
- Author
-
Atkinson, Terry S. and Anderson, Kimberly L.
- Subjects
LITERACY ,NONFICTION - Published
- 2019
- Full Text
- View/download PDF
45. Multi-turn ERL-based Synchrotron Light Facility: Injector Design
- Author
-
Matveenko, Alexander, Atkinson, Terry, Bondarenko, Alexey, and Petenev, Yuriy
- Subjects
A18 Energy Recovery Linacs (ERLs) ,Physics::Accelerator Physics ,02 Synchrotron Light Sources and FELs ,Accelerator Physics - Abstract
Multi-turn energy recovery linac based light sources are candidates for the future 4th generation synchrotron light sources. Using the superconducting linac technology, the Femto-Science-Factory (FSF) will provide its users with ultra-bright photon beams of angstrom wavelength at 6 GeV final beam energy. The FSF is intended to be a multi-user facility and offers a variety of operation modes. An overview of the machine layout and magnetic optics design of the installation will be given in this paper with the focus on high brightness injector design., Proceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
- Published
- 2014
- Full Text
- View/download PDF
46. Suppression Techniques of CSR Induced Emittance Growth in ERL Arcs
- Author
-
Bondarenko, Alexey, Atkinson, Terry, and Matveenko, Alexander
- Subjects
05 Beam Dynamics and Electromagnetic Fields ,Physics::Accelerator Physics ,D01 Beam Optics - Lattices, Correction Schemes, Transport ,Accelerator Physics - Abstract
The Energy Recovery Linac (ERL) conception is a promising way of creating diffraction limited synchrotron light source. The high ERL beam quality (low emittance, short bunch and low energy spread) gives an opportunity to generate high brightness photon beams. One of the main requirements for the optic in such machines is the suppression of emittance growth. An important reason for beam degradation is the impact of Coherent Synchrotron Radiation (CSR) in bending magnets. CSR induced emittance dilution and methods of preservation both with and without compression are discussed in this article., Proceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
- Published
- 2014
- Full Text
- View/download PDF
47. Start-to-end Optic of the FSF Multi-turn ERL Project
- Author
-
Atkinson, Terry, Bondarenko, Alexey, Matveenko, Alexander, and Petenev, Yuriy
- Subjects
05 Beam Dynamics and Electromagnetic Fields ,Physics::Accelerator Physics ,D01 Beam Optics - Lattices, Correction Schemes, Transport ,Accelerator Physics - Abstract
Advanced magnetic optic designs are required to meet the heavy demands of future light sources: diffraction limited emittance, femto-second pulses and low energy spread. This paper highlights the magnetic optic that is presently being investigated in the ERL-simulation group at HZB. The injector optic is based on subtle emittance compensation techniques of space charge dominated beams. The high energy arcs are designed to suppress emittance growth due to CSR through horizontal phase advance manipulation, ISR effects by keeping the radiation integrals small and reduce the degradation due to chromatic aberrations. Optimised Start-to-End beam dynamic simulations are presented., Proceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
- Published
- 2014
- Full Text
- View/download PDF
48. Modeling of magnetic optic for the short pulse mode operation of Energy Recovery Linac based light sources
- Author
-
Matveenko, Alexander, Jaeschke, Eberhard, Aulenbacher, Kurt, Atkinson, Terry, Matveenko, Alexander, Jaeschke, Eberhard, Aulenbacher, Kurt, and Atkinson, Terry
- Abstract
Das Forschungsfeld der Synchrotronstrahlungsquellen hat sich in den letzen Jahren entscheidend weiterentwickelt. Alle Zukunftsideen, unabhängig von ihrer Komplexität, haben dennoch eines gemeinsam: die Erzeugung kurzer Pulse. Die Naturwissenschaften haben die Spitzenbrillanz, die mit Hilfe kürzester Pulse produziert werden kann, als neues Schlüsselwerkzeug entdeckt. Die Nutzergemeinschaft verlangt nicht mehr nur ein statisches Bild, sondern vielmehr eine Reihe von bewegten Aufnahmen atomarer Substrukturen und den dazugehöringen Prozessen. Existierende dritte Generation Synchrotronstrahlungsquellen werden an die neuen Herausforderungen angepasst: Verbesserungen an der Magnet-Optik sowie der Einbau modernster Beschleunigertechnologie ermöglichen die Erzeugung kürzester Pulse mit höchster Brillanz für zeitaufgelöste Experimente. Ein möglicher Kandidat für die Lichtquelle der nächsten Generation ist ein Linear-Beschleuniger mit Energierückgewinnung. Durch die Verwendung langer Beschleunigungsstrukturen kann es, selbst bei hohen Energien, nicht zur Ausbildung des Emittanzgleichgewichts wie in Speicherringen kommen. Durch die Verwendung Impulsabhängiger-Umlaufbahnen und der Rückgewinnung der Strahlenergie ist es mit `Energy Recovery Linac'' (ERL)-basierten Quellen energieeffizient möglich, hochenergetische Elektronen-Pulse im Femtosekundenbereich zu erzeugen. Die longitudinale Elekronstrahldynamik solcher ERLs ist eines der Hauptthemen dieser Arbeit. Umfangreiche Simulationen über die gesamte Maschine wurden im Rahmen der `Femto-Science Factory'' Lichtquellen Studie durchgeführt. Die Begrenzungen des Kurzpulsmodus Betriebes wurden untersucht und mit den Erwartungen verglichen. Besondere Aufmerksamkeit lag dabei auf den 6D Elektronenstrahleigenschaften, insbesondere auf der Vermeidung von Strahlaufweitungen, die mit der Erzeugung von Ultra-Kurzpulsen einhergehen können., Synchrotron light sources are entering a new era. No matter how elaborate, all the next generation proposals share a common necessity; the production of ultra-short electron bunches. There is an evolution in the field of science under investigation using the high peak brilliance generated from such bunches. The user community is demanding not just pictures but videos of atomic substructures and the processes that define them. Existing 3rd generation facilities are modifying their magnetic lattices and upgrading the acceleration schemes in order to keep up with this trend of generating short pulses with ultimate brilliance for time resolved experiments. A possible candidate for the next generation light source is one based on ERL technology. Using long linacs to accelerate to high energies overcomes the present limitation of emittance equilibrium in storage rings. By implementing independent arcs for acceleration and deceleration while recuperating the beams energy, ERL based sources are theoretically capable of efficiently producing high energy femtosecond long bunch lengths. The study of the longitudinal motion of the beam through single pass magnetic optic in combination with linacs is the main topic of this thesis. Dedicated start-to-end simulations in the framework of the Femto-Science Factory large scale light source are undertaken. The expectations and restrictions on the short pulse mode (SPM) operation are comprehensively examined in this work. Particular attention is given to the 6D electron beam properties and with it the beam degradation caused by the production of ultra-short bunches.
- Published
- 2015
49. All ASTA has done is blow smoke in our eyes
- Author
-
Atkinson, Terry
- Abstract
The following is in response to a Nov. 16 article with the headline "ASTA pledges to fight ARC on fee boost." I'm not sure ASTA president Richard Copland represents us […]
- Published
- 2000
50. Beholding Courbet from the Side
- Author
-
Atkinson, Terry
- Published
- 1992
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.