Science.gov

Sample records for accelerated high schools

  1. Teaching Electromagnetism to High-School Students Using Particle Accelerators

    ERIC Educational Resources Information Center

    Sinflorio, D. A.; Fonseca, P.; Coelho, L. F. S.; Santos, A. C. F.

    2006-01-01

    In this article we describe two simple experiments using an ion accelerator as an aid to the teaching of electromagnetism to high-school students. This is part of a programme developed by a Brazilian State funding agency (FAPERJ) which aims to help scientifically minded students take their first steps in research.

  2. Effects of Early Acceleration of Students in Mathematics on Taking Advanced Mathematics Coursework in High School

    ERIC Educational Resources Information Center

    Ma, Xin

    2010-01-01

    Based on data from the Longitudinal Study of American Youth (LSAY), students were classified into high-, middle-, and low-ability students. The effects of early acceleration in mathematics on the most advanced mathematics coursework (precalculus and calculus) in high school were examined in each category. Results showed that although early…

  3. Boosting Adolescent and Young Adult Literacy: An Examination of Literacy Teaching and Learning in Philadelphia's Accelerated High Schools

    ERIC Educational Resources Information Center

    Gold, Eva; Edmunds, Kimberly; Maluk, Holly; Reumann-Moore, Rebecca

    2011-01-01

    In 2010-11, the School District of Philadelphia (the District) operated thirteen accelerated high schools that served approximately 2,000 under-credited, over-age students. Each of the accelerated schools was managed by one of seven external providers, each with its own educational approach, and each with a contractual agreement with the…

  4. State of particle accelerators and high energy physics (Fermilab Summer School, 1981). Part 2

    SciTech Connect

    Carrigan, R.A. Jr.; Huson, F.R.; Month, M.

    1982-01-01

    The material gathered in this volume covers the seminars given at the Summer School on High Energy Particle Accelerators, sponsored by the United States Department of Energy (DOE) and the National Science Foundation, held at Fermilab in Batavia, Illinois, July 13 to 24, 1981. The school was organized as a response to a recent appeal by a subpanel of the DOE High Energy Physics Advisory Panel (HEPAP) for more scientists and more students to work in the field of high energy particle accelerators. The committee set a number of objectives for the school: (1) to present in a thorough and up-to-date manner the entire spectrum of knowledge relating to accelerators; (2) to disseminate that knowledge to audiences that can best make use of it; (3) to encourage, by providing text materials and training to potential instructors, the development of accelerator physics education as part of university programs in high-energy physics; and (4) to foster a more extensive dialogue between particle and accelerator physicists. Separate entries were prepared for the data base for the papers included. (WHK)

  5. Life in the Fast Lane: Effects of Early Grade Acceleration on High School and College Outcomes

    ERIC Educational Resources Information Center

    McClarty, Katie Larsen

    2015-01-01

    Research has repeatedly demonstrated the positive effects of acceleration for gifted and talented students. This study expands the literature by not only evaluating the impact of early grade skipping on high school and college outcomes but also examining the role of postacceleration opportunities on subsequent performance. Using a representative…

  6. Accelerated Schools: The Satellite Center Project.

    ERIC Educational Resources Information Center

    McCarthy, Jane

    The Accelerated Schools model attempts to restructure schools with high at-risk student populations and mainstream these students by the end of elementary school. A 6-year process of collaborative unity is used to identify challenge areas and move the school toward individualized solutions. The Accelerated Schools Satellite Center Project emerged…

  7. Thomas Edison Accelerated Elementary School.

    ERIC Educational Resources Information Center

    Levin, Henry M.; Chasin, Gene

    This paper describes early outcomes of a Sacramento, California, elementary school that participated in the Accelerated Schools Project. The school, which serves many minority and poor students, began training for the project in 1992. Accelerated Schools were designed to advance the learning rate of students through a gifted and talented approach,…

  8. Changes in Stress and Psychological Adjustment during the Transition to High School among Freshmen in an Accelerated Curriculum

    ERIC Educational Resources Information Center

    Suldo, Shannon M.; Shaunessy-Dedrick, Elizabeth

    2013-01-01

    This study determined whether participation in an accelerated curriculum (specifically, the International Baccalaureate [IB] program) upon entry to high school is associated with increases in stress and/or associated with psychological problems. Data from self-report questionnaires were collected at two time points (summer after eighth grade, fall…

  9. Preparing for College Success: Exploring the Impact of the High School Cambridge Acceleration Program on U.S. University Students

    ERIC Educational Resources Information Center

    Shaw, Stuart D.; Werno, Magda A.

    2016-01-01

    This case study sought to gain a better understanding of the impact of the Cambridge Acceleration Program on students' transition from high school to college at one American university. The findings from an online questionnaire indicate that many participants develop a range of skills that are perceived as important in the context of university…

  10. Accelerated Schools Project Technical Document.

    ERIC Educational Resources Information Center

    Johnson, Janet L.; Donley, Jan

    The North Carolina Partnership for Accelerated Schools includes nine schools in five counties in North Carolina. Representatives from the state Department of Education, the local school agencies, and the teacher educators from North Carolina State University and East Carolina University have worked together to implement the project, which works to…

  11. Accelerating the development of formal thinking in middle and high school students

    NASA Astrophysics Data System (ADS)

    Adey, Philip; Shayer, Michael

    In an attempt to accelerate the development of formal operations in average young adolescents, intervention lessons relating to all formal schemata were designed in the context of school science courses. Over a period of two years, up to 30 intervention lessons were given by science teachers to their classes in eight schools. Boys who started the program aged 12+ showed a pre-posttest effect size on Piagetian tests of 0.89 SD compared with control classes. In terms of British norms for the development of operational thinking this was a mean change from the 51st to the 74th percentile. Neither the middle school students nor the 12+ girls showed greater gain than the controls. Gains were shown by girls in one 11+ class and in the two 11+ laboratory classes. In the laboratory school students given intervention lessons by the researchers maintained their gains over controls in formal operations at a delayed posttest one year after cessation of the program. There was no effect on tests of science achievement during the intervention. It was argued that the interventions needed to be accompanied by in-service training designed to enable teachers to change their teaching style in line with their students' increased operational thinking capacity.

  12. School Transformation Efforts Accelerate

    ERIC Educational Resources Information Center

    Aarons, Dakarai I.

    2010-01-01

    Spurred both by fiscal realities and momentum from the U.S. Department of Education's agenda for school improvement, local and state education leaders are moving forcefully and quickly to make big changes to districts and schools that have long struggled with low test scores and graduation rates. In Kansas City, Missouri, the school board voted…

  13. High brightness electron accelerator

    DOEpatents

    Sheffield, Richard L.; Carlsten, Bruce E.; Young, Lloyd M.

    1994-01-01

    A compact high brightness linear accelerator is provided for use, e.g., in a free electron laser. The accelerator has a first plurality of acclerating cavities having end walls with four coupling slots for accelerating electrons to high velocities in the absence of quadrupole fields. A second plurality of cavities receives the high velocity electrons for further acceleration, where each of the second cavities has end walls with two coupling slots for acceleration in the absence of dipole fields. The accelerator also includes a first cavity with an extended length to provide for phase matching the electron beam along the accelerating cavities. A solenoid is provided about the photocathode that emits the electons, where the solenoid is configured to provide a substantially uniform magnetic field over the photocathode surface to minimize emittance of the electons as the electrons enter the first cavity.

  14. Emerging Consumerism and the Accelerated "Education Divide": The Case of Specialized High Schools in South Korea

    ERIC Educational Resources Information Center

    Park, Hyu-Yong

    2007-01-01

    This paper criticizes the neoliberal shift in Korean education toward educational consumerism by analyzing the boom in Specialized High schools (SHs). For its theoretical background, this paper discusses the issues of freedom, equal opportunity, and choice in education, and investigates how neoliberal consumerism has been encouraging the boom in…

  15. Students' Perceptions of Factors That Contribute to Risk and Success in Accelerated High School Courses

    ERIC Educational Resources Information Center

    Shaunessy-Dedrick, Elizabeth; Suldo, Shannon M.; Roth, Rachel A.; Fefer, Sarah A.

    2015-01-01

    In this qualitative study, we investigated 15 successful and 15 struggling high school students, perceived stressors, coping strategies, and intrapersonal and environmental factors that students perceive to influence their success in college-level courses. We found that students' primary sources of stress involved meeting numerous academic demands…

  16. High Gradient Accelerator Research

    SciTech Connect

    Temkin, Richard

    2016-07-12

    The goal of the MIT program of research on high gradient acceleration is the development of advanced acceleration concepts that lead to a practical and affordable next generation linear collider at the TeV energy level. Other applications, which are more near-term, include accelerators for materials processing; medicine; defense; mining; security; and inspection. The specific goals of the MIT program are: • Pioneering theoretical research on advanced structures for high gradient acceleration, including photonic structures and metamaterial structures; evaluation of the wakefields in these advanced structures • Experimental research to demonstrate the properties of advanced structures both in low-power microwave cold test and high-power, high-gradient test at megawatt power levels • Experimental research on microwave breakdown at high gradient including studies of breakdown phenomena induced by RF electric fields and RF magnetic fields; development of new diagnostics of the breakdown process • Theoretical research on the physics and engineering features of RF vacuum breakdown • Maintaining and improving the Haimson / MIT 17 GHz accelerator, the highest frequency operational accelerator in the world, a unique facility for accelerator research • Providing the Haimson / MIT 17 GHz accelerator facility as a facility for outside users • Active participation in the US DOE program of High Gradient Collaboration, including joint work with SLAC and with Los Alamos National Laboratory; participation of MIT students in research at the national laboratories • Training the next generation of Ph. D. students in the field of accelerator physics.

  17. High intensity hadron accelerators

    SciTech Connect

    Teng, L.C.

    1989-05-01

    This rapporteur report consists mainly of two parts. Part I is an abridged review of the status of all High Intensity Hadron Accelerator projects in the world in semi-tabulated form for quick reference and comparison. Part II is a brief discussion of the salient features of the different technologies involved. The discussion is based mainly on my personal experiences and opinions, tempered, I hope, by the discussions I participated in in the various parallel sessions of the workshop. In addition, appended at the end is my evaluation and expression of the merits of high intensity hadron accelerators as research facilities for nuclear and particle physics.

  18. Promoting Acceleration of Comprehension and Content through Text in High School Social Studies Classes

    ERIC Educational Resources Information Center

    Wanzek, Jeanne; Swanson, Elizabeth A.; Roberts, Greg; Vaughn, Sharon; Kent, Shawn C.

    2015-01-01

    The purpose of this study was to evaluate the efficacy of Promoting Acceleration of Comprehension and Content Through Text intervention implemented with 11th-grade students enrolled in U.S. History classes. Using a within-teacher randomized design, the study was conducted in 41 classes (23 treatment classes) with 14 teachers providing the…

  19. HIGH GRADIENT INDUCTION ACCELERATOR

    SciTech Connect

    Caporaso, G J; Sampayan, S; Chen, Y; Blackfield, D; Harris, J; Hawkins, S; Holmes, C; Krogh, M; Nelson, S; Nunnally, W; Paul, A; Poole, B; Rhodes, M; Sanders, D; Selenes, K; Sullivan, J; Wang, L; Watson, J

    2007-06-21

    A new type of compact induction accelerator is under development at the Lawrence Livermore National Laboratory that promises to increase the average accelerating gradient by at least an order of magnitude over that of existing induction machines. The machine is based on the use of high gradient vacuum insulators, advanced dielectric materials and switches and is stimulated by the desire for compact flash x-ray radiography sources. Research describing an extreme variant of this technology aimed at proton therapy for cancer will be described. Progress in applying this technology to several applications will be reviewed.

  20. Accelerated Schools in Action: Lessons from the Field.

    ERIC Educational Resources Information Center

    Finnan, Christine, Ed.; And Others

    This book provides insights into one of the nation's largest and most comprehensive school-restructuring movements, the Accelerated Schools Project. Since its inception in 1986, the focus of the movement has been on transforming schools with students at risk of dropping out into schools with high expectations of all students. This is accomplished,…

  1. Reading Instruction in the Accelerated School.

    ERIC Educational Resources Information Center

    Barton, Jim

    Disadvantaged elementary school students can be taught to think critically as part of the process of learning to read. The key to student change is teacher knowledge. The purpose of this paper is to inform the development of powerful teaching strategies for reading instruction as used in Accelerated Schools. The Accelerated School is a…

  2. Respect and Success Every Day: High Expectations and Family Style Teamwork Are Woven into the Community Fabric of Daniel Webster Accelerated School in San Francisco, California.

    ERIC Educational Resources Information Center

    Johnson, Etta Green

    1992-01-01

    Daniel Webster Accelerated School in San Francisco (California) is one of two schools adopting the process of school change developed by H. M. Levin. An interview with Levin explains his philosophy of accelerated schools characterized by (1) unity of purpose; (2) school site responsibility; and (3) building on strengths. (SLD)

  3. Accelerated School Programmes: Assessing Their Effectiveness.

    ERIC Educational Resources Information Center

    Gaziel, Haim

    2001-01-01

    Examines the effectiveness of Accelerated School Programs (ASPs) on the basis of a study of four comprehensive schools in Israel. Assesses the influence of ASPs upon internal school processes, such as school goals, structures, and cultures, as perceived by school staff. Determines the project's impact on staff and parents' attitudes, and examines…

  4. Schooling in Times of Acceleration

    ERIC Educational Resources Information Center

    Buddeberg, Magdalena; Hornberg, Sabine

    2017-01-01

    Modern societies are characterised by forms of acceleration, which influence social processes. Sociologist Hartmut Rosa has systematised temporal structures by focusing on three categories of social acceleration: technical acceleration, acceleration of social change, and acceleration of the pace of life. All three processes of acceleration are…

  5. Development and Initial Validation of the Student Rating of Environmental Stressors Scale: Stressors Faced by Students in Accelerated High School Curricula

    ERIC Educational Resources Information Center

    Suldo, Shannon M.; Dedrick, Robert F.; Shaunessy-Dedrick, Elizabeth; Roth, Rachel A.; Ferron, John

    2015-01-01

    High school students in accelerated curricula face stressors beyond typical adolescent developmental challenges. The Student Rating of Environmental Stressors Scale (StRESS) is a self-report measure of environmental stressors appropriate for students in Advanced Placement (AP) and International Baccalaureate (IB) courses. We developed the StRESS…

  6. Who Enrolls in Dual Enrollment and Other Acceleration Programs in Florida High Schools? Issues & Answers. REL 2012-No. 119

    ERIC Educational Resources Information Center

    Estacion, Angela; Cotner, Bridget A.; D'Souza, Stephanie; Smith, Chrystal A. S.; Borman, Kathryn M.

    2011-01-01

    This study of advanced-level high school courses that offer credit toward both a high school diploma and a college degree in Florida compares one such program (dual enrollment) with others, describing the number and characteristics of grade 11 and 12 students enrolled overall and by district. It also examines dual enrollment partnerships between…

  7. Who Enrolls in Dual Enrollment and Other Acceleration Programs in Florida High Schools? Summary. Issues & Answers. REL 2012-No. 119

    ERIC Educational Resources Information Center

    Estacion, Angela; Cotner, Bridget A.; D'Souza, Stephanie; Smith, Chrystal A. S.; Borman, Kathryn M.

    2011-01-01

    This study of advanced-level high school courses that offer credit toward both a high school diploma and a college degree in Florida compares one such program (dual enrollment) with others, describing the number and characteristics of grade 11 and 12 students enrolled overall and by district. It also examines dual enrollment partnerships between…

  8. The Accelerated Schools Project: Pope Elementary School, 1993-94.

    ERIC Educational Resources Information Center

    Windward Oahu School District, Kailu, HI.

    This report describes the first year of implementation of the 5-year Accelerated Schools Project (ASP) at Blanche Pope Elementary School in rural Oahu (Hawaii). ASP trains school staff and community members to transform governance, curriculum, and instruction in schools serving predominantly at-risk and minority, low-achieving students. In…

  9. High field gradient particle accelerator

    DOEpatents

    Nation, John A.; Greenwald, Shlomo

    1989-01-01

    A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

  10. High field gradient particle accelerator

    DOEpatents

    Nation, J.A.; Greenwald, S.

    1989-05-30

    A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

  11. High Schools.

    ERIC Educational Resources Information Center

    Educational Facility Planner, 2002

    2002-01-01

    Describes the building designs of 28 high schools, including their educational contexts and design goals. Includes information on size, construction costs, architects, and contractors. Also includes floor plans and photographs. (EV)

  12. Kuss Middle School: Expanding Time to Accelerate School Improvement

    ERIC Educational Resources Information Center

    Massachusetts 2020, 2012

    2012-01-01

    In 2004, Kuss Middle School became the first school declared "Chronically Underperforming" by the state of Massachusetts. But by 2010, Kuss had transformed itself into a model for schools around the country seeking a comprehensive turnaround strategy. Kuss is using increased learning time as the primary catalyst to accelerate learning,…

  13. HIGH ENERGY PARTICLE ACCELERATOR

    DOEpatents

    Courant, E.D.; Livingston, M.S.; Snyder, H.S.

    1959-04-14

    An improved apparatus is presented for focusing charged particles in an accelerator. In essence, the invention includes means for establishing a magnetic field in discrete sectors along the path of moving charged particles, the magnetic field varying in each sector in accordance with the relation. B = B/ sub 0/ STAln (r-r/sub 0/)/r/sub 0/!, where B/sub 0/ is the value of the magnetic field at the equilibrium orbit of radius r/sub 0/ of the path of the particles, B equals the magnetic field at the radius r of the chamber and n equals the magnetic field gradient index, the polarity of n being abruptly reversed a plurality of times as the particles travel along their arcuate path. With this arrangement, the particles are alternately converged towards the axis of their equillbrium orbit and diverged therefrom in successive sectors with a resultant focusing effect.

  14. The United States Particle Accelerator School: Educating the next generation of accelerator scientists and engineers

    SciTech Connect

    Barletta, William A.; /MIT

    2008-09-01

    Only a handful of universities in the US offer any formal training in accelerator science. The United States Particle Accelerator School (USPAS) is National Graduate Educational Program that has developed a highly successful educational paradigm that, over the past twenty-years, has granted more university credit in accelerator / beam science and technology than any university in the world. Sessions are held twice annually, hosted by major US research universities that approve course credit, certify the USPAS faculty, and grant course credit. The USPAS paradigm is readily extensible to other rapidly developing, crossdisciplinary research areas such as high energy density physics.

  15. The United States Particle Accelerator School: Educating the Next Generation of Accelerator Scientists and Engineers

    SciTech Connect

    Barletta, William A.

    2009-03-10

    Only a handful of universities in the US offer any formal training in accelerator science. The United States Particle Accelerator School (USPAS) is National Graduate Educational Program that has developed a highly successful educational paradigm that, over the past twenty-years, has granted more university credit in accelerator/beam science and technology than any university in the world. Sessions are held twice annually, hosted by major US research universities that approve course credit, certify the USPAS faculty, and grant course credit. The USPAS paradigm is readily extensible to other rapidly developing, cross-disciplinary research areas such as high energy density physics.

  16. Accelerated Leadership Development: Fast Tracking School Leaders

    ERIC Educational Resources Information Center

    Earley, Peter; Jones, Jeff

    2010-01-01

    "Accelerated Leadership Development" captures and communicates the lessons learned from successful fast-track leadership programmes in the private and public sector, and provides a model which schools can follow and customize as they plan their own leadership development strategies. As large numbers of headteachers and other senior staff…

  17. Development and Initial Validation of the Coping with Academic Demands Scale: How Students in Accelerated High School Curricula Cope with School-Related Stressors

    ERIC Educational Resources Information Center

    Suldo, Shannon M.; Dedrick, Robert F.; Shaunessy-Dedrick, Elizabeth; Fefer, Sarah A.; Ferron, John

    2015-01-01

    Successful coping with academic demands is important given the inverse relationship between stress and positive adjustment in adolescents. The Coping With Academic Demands Scale (CADS) is a new measure of coping appropriate for students pursuing advanced high school curricula, specifically Advanced Placement (AP) classes and the International…

  18. High-Intensity Proton Accelerator

    SciTech Connect

    Jay L. Hirshfield

    2011-12-27

    Analysis is presented for an eight-cavity proton cyclotron accelerator that could have advantages as compared with other accelerators because of its potentially high acceleration gradient. The high gradient is possible since protons orbit in a sequence of TE111 rotating mode cavities of equally diminishing frequencies with path lengths during acceleration that greatly exceed the cavity lengths. As the cavities operate at sequential harmonics of a basic repetition frequency, phase synchronism can be maintained over a relatively wide injection phase window without undue beam emittance growth. It is shown that use of radial vanes can allow cavity designs with significantly smaller radii, as compared with simple cylindrical cavities. Preliminary beam transport studies show that acceptable extraction and focusing of a proton beam after cyclic motion in this accelerator should be possible. Progress is also reported on design and tests of a four-cavity electron counterpart accelerator for experiments to study effects on beam quality arising from variations injection phase window width. This device is powered by four 500-MW pulsed amplifiers at 1500, 1800, 2100, and 2400 MHz that provide phase synchronous outputs, since they are driven from a with harmonics derived from a phase-locked 300 MHz source.

  19. Middle Grades and High Schools Use Effective Strategies to Prepare Students for Challenging High School Studies. High Schools That Work

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2011

    2011-01-01

    Middle grades schools have their hands full in working with elementary schools and high schools to improve the likelihood of success for middle grades students--accelerating learning, helping elementary students move seamlessly into the middle grades, preparing middle grades students for rigorous high school courses, changing organization and…

  20. Enhanced knee joint function due to accelerated rehabilitation exercise after anterior cruciate ligament reconstruction surgery in Korean male high school soccer players

    PubMed Central

    Lee, Myungchun; Sung, Dong Jun; Lee, Joohyung; Oh, Inyoung; Kim, Sojung; Kim, Seungho; Kim, Jooyoung

    2016-01-01

    This study was conducted on Korean male high school soccer players who underwent anterior cruciate ligament reconstruction (ACLR) to identify the effects of an accelerated rehabilitation exercise (ARE) program on knee joint isometric strength, thigh circumference, Lysholm score, and active balance agility. We assigned eight test participants each to a physical therapy group (PTG) and an accelerated rehabilitation exercise group (AREG), and compared differences between the groups. Both the PTG and AREG showed significant increases in 30° away and 60° toward isometric strength after treatment. In addition, significant differences were observed in these strength tests between the two groups. Both groups also showed significant increases in thigh circumference, Lysholm score, and active balance agility after treatment, but no significant differences were observed between the two groups. We conclude that the ARE treatment was more effective for improving isometric strength of the knee joint than that of physical therapy, and that an active rehabilitation exercise program after ACLR had positive effects on recovery performance of patients with an ACL injury and their return to the playing field. PMID:26933657

  1. High Schools with Character.

    ERIC Educational Resources Information Center

    Hill, Paul T.; And Others

    This study compares zoned high schools, special public magnet schools, and Catholic high schools to identify features that motivate low-income students. Ten days of observations, interviews, and reviews of student records were conducted at eight New York City schools. Of the eight, three were Catholic high schools, two were zoned high schools, and…

  2. Accelerated Schools for Quality Education: A Hong Kong Perspective

    ERIC Educational Resources Information Center

    Chi-kin Lee, John; Levin, Henry; Soler, Pilar

    2005-01-01

    This article addresses the application of the Accelerated Schools Project (ASP) model in Hong Kong, as well as specific aspects of implementation in two schools. One lesson from the localized project, the Accelerated Schools for Quality Education (ASPQE), is that change is slow. This suggests that time should be given for both cultural change and…

  3. Ultra-high vacuum photoelectron linear accelerator

    DOEpatents

    Yu, David U.L.; Luo, Yan

    2013-07-16

    An rf linear accelerator for producing an electron beam. The outer wall of the rf cavity of said linear accelerator being perforated to allow gas inside said rf cavity to flow to a pressure chamber surrounding said rf cavity and having means of ultra high vacuum pumping of the cathode of said rf linear accelerator. Said rf linear accelerator is used to accelerate polarized or unpolarized electrons produced by a photocathode, or to accelerate thermally heated electrons produced by a thermionic cathode, or to accelerate rf heated field emission electrons produced by a field emission cathode.

  4. New accelerators in high-energy physics

    SciTech Connect

    Blewett, J.P.

    1982-01-01

    First, I should like to mention a few new ideas that have appeared during the last few years in the accelerator field. A couple are of importance in the design of injectors, usually linear accelerators, for high-energy machines. Then I shall review some of the somewhat sensational accelerator projects, now in operation, under construction or just being proposed. Finally, I propose to mention a few applications of high-energy accelerators in fields other than high-energy physics. I realize that this is a digression from my title but I hope that you will find it interesting.

  5. High average power induction accelerators

    SciTech Connect

    Swingle, J.C.

    1985-10-01

    The induction accelerator is discussed with respect to general background and concept, beam transport, scaling, pulse power technology, and the electron beam injector. A discussion of the factors which affect the scaling of the intensity of the beam is given. Limiting factors include collective forces in the beam, virtual cathode formation, surroundings, and beam breakup instability. 24 refs., 11 figs. (WRF)

  6. 17 GHz High Gradient Accelerator Research

    SciTech Connect

    Temkin, Richard J.; Shapiro, Michael A.

    2013-07-10

    This is a report on the MIT High Gradient Accelerator Research program which has included: Operation of the 17 GHz, 25 MeV MIT/Haimson Research Corp. electron accelerator at MIT, the highest frequency, stand-alone accelerator in the world; collaboration with members of the US High Gradient Collaboration, including the design and test of novel structures at SLAC at 11.4 GHz; the design, construction and testing of photonic bandgap structures, including metallic and dielectric structures; the investigation of the wakefields in novel structures; and the training of the next generation of graduate students and postdoctoral associates in accelerator physics.

  7. Evaluating High School IT

    ERIC Educational Resources Information Center

    Thompson, Brett A.

    2004-01-01

    Since its inception in 1997, Cisco's curriculum has entered thousands of high schools across the U.S. and around the world for two reasons: (1) Cisco has a large portion of the computer networking market, and thus has the resources for and interest in developing high school academies; and (2) high school curriculum development teams recognize the…

  8. Early College High Schools

    ERIC Educational Resources Information Center

    Dessoff, Alan

    2011-01-01

    For at-risk students who stand little chance of going to college, or even finishing high school, a growing number of districts have found a solution: Give them an early start in college while they still are in high school. The early college high school (ECHS) movement that began with funding from the Bill and Melinda Gates Foundation 10 years ago…

  9. High Transformer ratios in collinear wakefield accelerators.

    SciTech Connect

    Power, J. G.; Conde, M.; Yusof, Z.; Gai, W.; Jing, C.; Kanreykin, A.; Schoessow, P.; High Energy Physics; Euclid Techlabs, LLC

    2008-01-01

    Based on our previous experiment that successfully demonstrated wakefield transformer ratio enhancement in a 13.625 GHz dielectric-loaded collinear wakefield accelerator using the ramped bunch train technique, we present here a redesigned experimental scheme for even higher enhancement of the efficiency of this accelerator. Design of a collinear wakefield device with a transformer ratio R2, is presented. Using a ramped bunch train (RBT) rather than a single drive bunch, the enhanced transformer ratio (ETR) technique is able to increase the transformer ratio R above the ordinary limit of 2. To match the wavelength of the fundamental mode of the wakefield with the bunch length (sigmaz=2 mm) of the new Argonne wakefield accelerator (AWA) drive gun (where the experiment will be performed), a 26.625 GHz dielectric based accelerating structure is required. This transformer ratio enhancement technique based on our dielectric-loaded waveguide design will result in a compact, high efficiency accelerating structures for future wakefield accelerators.

  10. A Statistical Perspective on Highly Accelerated Testing

    SciTech Connect

    Thomas, Edward V.

    2015-02-01

    Highly accelerated life testing has been heavily promoted at Sandia (and elsewhere) as a means to rapidly identify product weaknesses caused by flaws in the product's design or manufacturing process. During product development, a small number of units are forced to fail at high stress. The failed units are then examined to determine the root causes of failure. The identification of the root causes of product failures exposed by highly accelerated life testing can instigate changes to the product's design and/or manufacturing process that result in a product with increased reliability. It is widely viewed that this qualitative use of highly accelerated life testing (often associated with the acronym HALT) can be useful. However, highly accelerated life testing has also been proposed as a quantitative means for "demonstrating" the reliability of a product where unreliability is associated with loss of margin via an identified and dominating failure mechanism. It is assumed that the dominant failure mechanism can be accelerated by changing the level of a stress factor that is assumed to be related to the dominant failure mode. In extreme cases, a minimal number of units (often from a pre-production lot) are subjected to a single highly accelerated stress relative to normal use. If no (or, sufficiently few) units fail at this high stress level, some might claim that a certain level of reliability has been demonstrated (relative to normal use conditions). Underlying this claim are assumptions regarding the level of knowledge associated with the relationship between the stress level and the probability of failure. The primary purpose of this document is to discuss (from a statistical perspective) the efficacy of using accelerated life testing protocols (and, in particular, "highly accelerated" protocols) to make quantitative inferences concerning the performance of a product (e.g., reliability) when in fact there is lack-of-knowledge and uncertainty concerning the

  11. ACCELERATING POLARIZED PROTONS TO HIGH ENERGY.

    SciTech Connect

    BAI, M.; AHRENS, L.; ALEKSEEV, I.G.; ALESSI, J.; BEEBE-WANG, J.; BLASKIEWICZ, M.; BRAVAR, A.; BRENNAN, J.M.; BRUNO, D.; BUNCE, G.; ET AL.

    2006-10-02

    The Relativistic Heavy Ion Collider (RHIC) is designed to provide collisions of high energy polarized protons for the quest of understanding the proton spin structure. Polarized proton collisions at a beam energy of 100 GeV have been achieved in RHIC since 2001. Recently, polarized proton beam was accelerated to 250 GeV in RHIC for the first time. Unlike accelerating unpolarized protons, the challenge for achieving high energy polarized protons is to fight the various mechanisms in an accelerator that can lead to partial or total polarization loss due to the interaction of the spin vector with the magnetic fields. We report on the progress of the RHIC polarized proton program. We also present the strategies of how to preserve the polarization through the entire acceleration chain, i.e. a 200 MeV linear accelerator, the Booster, the AGS and RHIC.

  12. Impact of the Accelerated Reader Technology-Based Literacy Program on Overall Academic Achievement and School Attendance.

    ERIC Educational Resources Information Center

    Paul, Terrance; VanderZee, Darrel; Rue, Tom; Swanson, Scott

    A study demonstrated the positive impact of school ownership of the Accelerated Reader (AR) technology-based literacy program on attendance and standardized test scores at a representative sample of 2,500 elementary, middle, and high schools. These schools were compared with approximately 3,500 schools of similar geographic and demographic…

  13. The evolution of high energy accelerators

    SciTech Connect

    Courant, E.D.

    1989-10-01

    In this lecture I would like to trace how high energy particle accelerators have grown from tools used for esoteric small-scale experiments to gigantic projects being hotly debated in Congress as well as in the scientific community.

  14. Naperville High School

    ERIC Educational Resources Information Center

    Robert Wood Johnson Foundation, 2012

    2012-01-01

    In a political climate where most public schools have reduced or eliminated P.E. entirely in response to budget cuts and increased pressure to improve academic test scores, Naperville High School in Illinois stands out as an anomaly. The school's already robust daily P.E. program is specifically designed around the notion that physical activity…

  15. Japan's High Schools.

    ERIC Educational Resources Information Center

    Rohlen, Thomas P.

    The author, an anthropologist, spent 14 months (1974-75) in the industrial port city of Kobe (Japan) observing a cross section of urban high schools, including Japan's most elite private school and a night vocational school plagued by absenteeism and delinquency. He reports on the character of the institutions and of the experience via…

  16. High School and beyond

    ERIC Educational Resources Information Center

    Gewertz, Catherine

    2009-01-01

    Educators and policymakers increasingly recognize that in middle school, a combination of strong academic preparation, close monitoring, and good support is pivotal to success in high school. But few middle schools have structured themselves so explicitly to deliver the double wallop of academic and counseling attention needed to get their…

  17. Relativistic klystron research for high gradient accelerators

    SciTech Connect

    Allen, M.A.; Callin, R.S.; Deruyter, H.; Eppley, K.R.; Fowkes, W.R.; Herrmannsfeldt, W.B.; Higo, T.; Hoag, H.A.; Lavine, T.L.; Lee, T.G.

    1988-06-01

    Relativistic klystrons are being developed as a power source for high gradient accelerator applications which include large linear electron--positron colliders, compact accelerators, and FEL sources. We have attained 200MW peak power at 11.4 GHz from a relativistic klystron, and 140 MV/m longitudinal gradient in a short 11.4 GHz accelerator section. We report here on the design of our first klystrons, the results of our experiments so far, and some of our plans for the near future. 5 refs., 7 figs.

  18. High School Oceanography.

    ERIC Educational Resources Information Center

    Falmouth Public Schools, MA.

    This book is a compilation of a series of papers designed to aid high school teachers in organizing a course in oceanography for high school students. It consists of twelve papers, with references, covering each of the following: (1) Introduction to Oceanography, (2) Geology of the Ocean, (3) The Continental Shelves, (4) Physical Properties of Sea…

  19. High School: Erasing Borders

    ERIC Educational Resources Information Center

    Wright, Dianne; Bogotch, Ira

    2006-01-01

    Over the last several years there have been numerous calls for reforming high school to college transitions. In 2000-2001, the American Youth Policy Forum (AYPF) and the National Commission on the High School Senior Year respectively called for a re-thinking of how students moved from secondary to postsecondary education. A widely-discussed…

  20. Reforming Underperforming High Schools

    ERIC Educational Resources Information Center

    MDRC, 2013

    2013-01-01

    Urban high schools are in trouble--high dropout rates, low student academic achievement, and graduates who are unprepared for college are just some of the disappointing indicators. However, recent research points to a select number of approaches to improving student outcomes and reforming underperforming schools--from particular ways of creating…

  1. Relativistic klystrons for high-gradient accelerators

    SciTech Connect

    Westenskow, G.A.; Aalberts, D.P.; Boyd, J.K.; Deis, G.A.; Houck, T.L.; Orzechowski, T.J.; Ryne, R.D.; Yu, S.S. ); Allen, M.A.; Callin, R.S.; Deruyter, H.; Eppley, K.R.; Fant, K.S.; Fowkes, W.R.; Hoag, H.A.; Koontz, R.F.; Lavine, T.L.; Loew, G.A.; Miller, R.H.; Ruth, R.D.; Vlieks, A.E.; Wang, J.W. ); Haimson, J.; Mecklen

    1990-09-05

    Experimental work is being performed by collaborators at LLNL, SLAC, and LBL to investigate relativistic klystrons as a possible rf power source for future high-gradient accelerators. We have learned how to overcome or previously reported problem of high power rf pulse shortening and have achieved peak rf power levels of 330 MW using an 11.4-GHz high-gain tube with multiple output structures. In these experiments the rf pulse is of the same duration as the beam current pulse. In addition, experiments have been performed on two short sections of a high-gradient accelerator using the rf power from a relativistic klystron. An average accelerating gradient of 84 MV/m has been achieved with 80-MW of rf power.

  2. Recovery High Schools

    PubMed Central

    Moberg, D. Paul; Finch, Andrew J.

    2009-01-01

    High schools specifically designed for students recovering from a substance use disorder (substance abuse or dependence) have been emerging as a continuing care resource since 1987. This study of 17 schools provides the first systematic description of recovery school programs and their students. The most common school model is that of a program or affiliated school, embedded organizationally and physically with another school or set of alternative school programs. Although embedded, there are serious efforts to maintain physical separation of recovery school students from other students, using scheduling and physical barriers. Affiliation with public school systems is the case for most recovery schools, and seems to be a major factor in assuring fiscal and organizational feasibility. The students in the recovery high schools studied were predominantly white (78%), with about one-half from two parent homes. Overall parent educational levels suggest a higher mean SES than in the general population. Most students (78%) had prior formal treatment for substance use disorders, often concomitantly with treatment for mental health concerns, and were often referred by treatment providers. Students came with a broad and complex range of mental health issues, traumatic experiences, drug use patterns, criminal justice involvement, and educational backgrounds. The complexity of these problems clearly limits the enrollment capacity of the schools. Retrospective pretest to post-test analysis suggests significant reduction in substance use as well as in mental health symptoms among the students. Students were very positive in their assessment of the therapeutic value of the schools, but less enthusiastic regarding the educational programs. The school programs appear to successfully function as continuing care to reinforce and sustain the therapeutic benefits students gained from their treatment experiences. PMID:19165348

  3. Applications of High Intensity Proton Accelerators

    NASA Astrophysics Data System (ADS)

    Raja, Rajendran; Mishra, Shekhar

    2010-06-01

    Superconducting radiofrequency linac development at Fermilab / S. D. Holmes -- Rare muon decay experiments / Y. Kuno -- Rare kaon decays / D. Bryman -- Muon collider / R. B. Palmer -- Neutrino factories / S. Geer -- ADS and its potential / J.-P. Revol -- ADS history in the USA / R. L. Sheffield and E. J. Pitcher -- Accelerator driven transmutation of waste: high power accelerator for the European ADS demonstrator / J. L. Biarrotte and T. Junquera -- Myrrha, technology development for the realisation of ADS in EU: current status & prospects for realisation / R. Fernandez ... [et al.] -- High intensity proton beam production with cyclotrons / J. Grillenberger and M. Seidel -- FFAG for high intensity proton accelerator / Y. Mori -- Kaon yields for 2 to 8 GeV proton beams / K. K. Gudima, N. V. Mokhov and S. I. Striganov -- Pion yield studies for proton driver beams of 2-8 GeV kinetic energy for stopped muon and low-energy muon decay experiments / S. I. Striganov -- J-Parc accelerator status and future plans / H. Kobayashi -- Simulation and verification of DPA in materials / N. V. Mokhov, I. L. Rakhno and S. I. Striganov -- Performance and operational experience of the CNGS facility / E. Gschwendtner -- Particle physics enabled with super-conducting RF technology - summary of working group 1 / D. Jaffe and R. Tschirhart -- Proton beam requirements for a neutrino factory and muon collider / M. S. Zisman -- Proton bunching options / R. B. Palmer -- CW SRF H linac as a proton driver for muon colliders and neutrino factories / M. Popovic, C. M. Ankenbrandt and R. P. Johnson -- Rapid cycling synchrotron option for Project X / W. Chou -- Linac-based proton driver for a neutrino factory / R. Garoby ... [et al.] -- Pion production for neutrino factories and muon colliders / N. V. Mokhov ... [et al.] -- Proton bunch compression strategies / V. Lebedev -- Accelerator test facility for muon collider and neutrino factory R&D / V. Shiltsev -- The superconducting RF linac for muon

  4. The evolution of high energy accelerators

    SciTech Connect

    Courant, E.D.

    1994-08-01

    Accelerators have been devised and built for two reasons: In the first place, by physicists who needed high energy particles in order to have a means to explore the interactions between particles that probe the fundamental elementary forces of nature. And conversely, sometimes accelerator builders produce new machines for higher energy than ever before just because it can be done, and then challenge potential users to make new discoveries with the new means at hand. These two approaches or motivations have gone hand in hand. This lecture traces how high energy particle accelerators have grown from tools used for esoteric small-scale experiments to the gigantic projects of today. So far all the really high-energy machines built and planned in the world--except the SLC--have been ring accelerators and storage rings using the strong-focusing method. But this method has not removed the energy limit, it has only pushed it higher. It would seem unlikely that one can go beyond the Large Hadron Collider (LHC)--but in fact a workshop was held in Sicily in November 1991, concerned with the question of extrapolating to 100 TeV. Other acceleration and beam-forming methods are now being discussed--collective fields, laser acceleration, wake-field accelerators etc., all aimed primarily at making linear colliders possible and more attractive than with present radiofrequency methods. So far it is not entirely clear which of these schemes will dominate particle physics in the future--maybe something that has not been thought of as yet.

  5. Laser pulse shaping for high gradient accelerators

    NASA Astrophysics Data System (ADS)

    Villa, F.; Anania, M. P.; Bellaveglia, M.; Bisesto, F.; Chiadroni, E.; Cianchi, A.; Curcio, A.; Galletti, M.; Di Giovenale, D.; Di Pirro, G.; Ferrario, M.; Gatti, G.; Moreno, M.; Petrarca, M.; Pompili, R.; Vaccarezza, C.

    2016-09-01

    In many high gradient accelerator schemes, i.e. with plasma or dielectric wakefield induced by particles, many electron pulses are required to drive the acceleration of one of them. Those electron bunches, that generally should have very short duration and low emittance, can be generated in photoinjectors driven by a train of laser pulses coming inside the same RF bucket. We present the system used to shape and characterize the laser pulses used in multibunch operations at Sparc_lab. Our system gives us control over the main parameter useful to produce a train of up to five high brightness bunches with tailored intensity and time distribution.

  6. Technology development for high power induction accelerators

    SciTech Connect

    Birx, D.L.; Reginato, L.L.

    1985-06-11

    The marriage of Induction Linac technology with Nonlinear Magnetic Modulators has produced some unique capabilities. It appears possible to produce electron beams with average currents measured in amperes, at gradients exceeding 1 MeV/meter, and with power efficiencies approaching 50%. A 2 MeV, 5 kA electron accelerator has been constructed at the Lawrence Livermore National Laboratory (LLNL) to demonstrate these concepts and to provide a test facility for high brightness sources. The pulse drive for the accelerator is based on state-of-the-art magnetic pulse compressors with very high peak power capability, repetition rates exceeding a kilohertz and excellent reliability.

  7. RF Breakdown in High Frequency Accelerators

    SciTech Connect

    Doebert, S

    2004-05-27

    RF breakdown in high-frequency accelerators appears to limit the maximum achievable gradient as well as the reliability of such devices. Experimental results from high power tests, obtained mostly in the framework of the NLC/GLC project at 11 GHz and from the CLIC study at 30 GHz, will be used to illustrate the important issues. The dependence of the breakdown phenomena on rf pulse length, operating frequency and fabrication material will be described. Since reliability is extremely important for large scale accelerators such as a linear collider, the measurements of breakdown rate as a function of the operating gradient will be highlighted.

  8. An introduction to the physics of high energy accelerators

    SciTech Connect

    Edwards, D.A.; Syphers, J.J.

    1993-01-01

    This book is an outgrowth of a course given by the authors at various universities and particle accelerator schools. It starts from the basic physics principles governing particle motion inside an accelerator, and leads to a full description of the complicated phenomena and analytical tools encountered in the design and operation of a working accelerator. The book covers acceleration and longitudinal beam dynamics, transverse motion and nonlinear perturbations, intensity dependent effects, emittance preservation methods and synchrotron radiation. These subjects encompass the core concerns of a high energy synchrotron. The authors apparently do not assume the reader has much previous knowledge about accelerator physics. Hence, they take great care to introduce the physical phenomena encountered and the concepts used to describe them. The mathematical formulae and derivations are deliberately kept at a level suitable for beginners. After mastering this course, any interested reader will not find it difficult to follow subjects of more current interests. Useful homework problems are provided at the end of each chapter. Many of the problems are based on actual activities associated with the design and operation of existing accelerators.

  9. Recovery High Schools

    ERIC Educational Resources Information Center

    Vogel, Carl

    2009-01-01

    This article discusses recovery high schools which are designed specifically to serve students who have been through a professional substance abuse treatment program and are working to stay away from drugs and alcohol. The schools typically serve multiple districts and are funded from both the per-pupil state funds that follow a student and what…

  10. Saving America's High Schools

    ERIC Educational Resources Information Center

    Smerdon, Becky, Ed.; Borman, Kathryn M., Ed.

    2009-01-01

    Our educational system is in a continuous state of reform, yet outcomes are nowhere near what we can accept. Though the search for answers is perpetual, many efforts over the past decade have homed in on one feature of high schools--their size. If we simply reduce school size, the argument goes, students will gain a safer environment that can…

  11. Turning High-Poverty Schools into High-Performing Schools

    ERIC Educational Resources Information Center

    Parrett, William H.; Budge, Kathleen

    2012-01-01

    If some schools can overcome the powerful and pervasive effects of poverty to become high performing, shouldn't any school be able to do the same? Shouldn't we be compelled to learn from those schools? Although schools alone will never systemically eliminate poverty, high-poverty, high-performing (HP/HP) schools take control of what they can to…

  12. CHALLENGES FACING HIGH POWER PROTON ACCELERATORS

    SciTech Connect

    Plum, Michael A

    2013-01-01

    This presentation will provide an overview of the challenges of high power proton accelerators such as SNS, J-PARC, etc., and what we have learned from recent experiences. Beam loss mechanisms and methods to mitigate beam loss will also be discussed.

  13. Diamond Ranch High School.

    ERIC Educational Resources Information Center

    Betsky, Aaron

    2000-01-01

    Highlights award-winning Diamond Ranch High School (California) that was designed and built on a steep site around Los Angeles considered unsatisfactory for building due to its unstable soils. Building organization is discussed, and photos are provided. (GR)

  14. High average power linear induction accelerator development

    SciTech Connect

    Bayless, J.R.; Adler, R.J.

    1987-07-01

    There is increasing interest in linear induction accelerators (LIAs) for applications including free electron lasers, high power microwave generators and other types of radiation sources. Lawrence Livermore National Laboratory has developed LIA technology in combination with magnetic pulse compression techniques to achieve very impressive performance levels. In this paper we will briefly discuss the LIA concept and describe our development program. Our goals are to improve the reliability and reduce the cost of LIA systems. An accelerator is presently under construction to demonstrate these improvements at an energy of 1.6 MeV in 2 kA, 65 ns beam pulses at an average beam power of approximately 30 kW. The unique features of this system are a low cost accelerator design and an SCR-switched, magnetically compressed, pulse power system. 4 refs., 7 figs.

  15. High-field dipoles for future accelerators

    SciTech Connect

    Wipf, S.L.

    1984-09-01

    This report presents the concept for building superconducting accelerator dipoles with record high fields. Economic considerations favor the highest possible current density in the windings. Further discussion indicates that there is an optimal range of pinning strength for a superconducting material and that it is not likely for multifilamentary conductors to ever equal the potential performance of tape conductors. A dipole design with a tape-wound, inner high-field winding is suggested. Methods are detailed to avoid degradation caused by flux jumps and to overcome problems with the dipole ends. Concerns for force support structure and field precision are also addressed. An R and D program leading to a prototype 11-T dipole is outlined. Past and future importance of superconductivity to high-energy physics is evident from a short historical survey. Successful dipoles in the 10- to 20-T range will allow interesting options for upgrading present largest accelerators.

  16. The Effect of Accelerated Reader on Reading Scores in a Rural School District

    ERIC Educational Resources Information Center

    Hunter, Teresa A.

    2013-01-01

    In this study, the implementation of Accelerated Reader (AR), a computer-assisted supplemental reading program, was investigated as a research-based instructional strategy to assess whether it aided a high-performing, rural school district in meeting adequate yearly progress goals. The theoretical framework was based on Vygotsky's zone of…

  17. LINCOLN HIGH SCHOOL, THE OPPORTUNITY SCHOOL.

    ERIC Educational Resources Information Center

    Lincoln High School, St. Louis, MO.

    THREE SEPARATE DOCUMENTS DESCRIBE A SPECIAL HIGH SCHOOL WHICH OFFERS MOTIVATION AND ACADEMIC OR VOCATIONAL PREPARATION TO STUDENTS WHO ARE UNABLE TO FUNCTION WITHIN A REGULAR HIGH SCHOOL PROGRAM. ACADEMIC FAILURE, ABSENTEEISM, OR BEHAVIOR PROBLEMS WERE THE USUAL REASONS FOR A STUDENT'S DISMISSAL FROM HIS REGULAR SCHOOL. IT IS ANTICIPATED THAT AS A…

  18. Power Supplies for High Energy Particle Accelerators

    NASA Astrophysics Data System (ADS)

    Dey, Pranab Kumar

    2016-06-01

    The on-going research and the development projects with Large Hadron Collider at CERN, Geneva, Switzerland has generated enormous enthusiasm and interest amongst all to know about the ultimate findings on `God's Particle'. This paper has made an attempt to unfold the power supply requirements and the methodology adopted to provide the stringent demand of such high energy particle accelerators during the initial stages of the search for the ultimate particles. An attempt has also been made to highlight the present status on the requirement of power supplies in some high energy accelerators with a view that, precautionary measures can be drawn during design and development from earlier experience which will be of help for the proposed third generation synchrotron to be installed in India at a huge cost.

  19. Comparison of high group velocity accelerating structures

    SciTech Connect

    Farkas, Z.D.; Wilson, P.B.

    1987-02-01

    It is well known that waveguides with no perturbations have phase velocities greater than the velocity of light c. If the waveguide dimensions are chosen so that the phase velocity is only moderately greater than c, only small perturbations are required to reduce the phase velocity to be synchronous with a high energy particle bunch. Such a lightly loaded accelerator structure will have smaller longitudinal and transverse wake potentials and hence will lead to lower emittance growth in an accelerated beam. Since these structures are lightly loaded, their group velocities are only slightly less than c and not in the order of 0.01c, as is the case for the standard disk-loaded structures. To ascertain that the peak and average power requirements for these structures are not prohibitive, we examine the elastance and the Q for several traveling wave structures: phase slip structures, bellows-like structures, and lightly loaded disk-loaded structures.

  20. High School Graduation: An Alternative

    ERIC Educational Resources Information Center

    O'Leary, Brian P.

    2010-01-01

    In Manitoba's Seven Oaks School Division, all 3,000 high school students have a teacher advisor who spends an hour a week with them throughout their four years in high school, knows them as individuals, knows their families, and acts as an academic and life coach. Advisors help students complete their first high school course registration and they…

  1. Reshaping High School English.

    ERIC Educational Resources Information Center

    Pirie, Bruce

    This book takes up the question of what shape high school English studies should take in the coming years. It describes an English program that blends philosophical depth with classroom practicality. Drawing examples from commonly taught texts such as "Macbeth,""To Kill a Mockingbird," and "Lord of the Flies," the…

  2. Revisiting High School Visits

    ERIC Educational Resources Information Center

    Flagel, Andrew

    2012-01-01

    NACAC's anniversary is a great time to follow up on an article on high school visits, a topic of ongoing discussion in every admission and guidance office. The article highlights a variety of potential good outcomes that can be derived from collaborative interactions. Sadly, however, admission representatives are apt to be described by the…

  3. High-School Village.

    ERIC Educational Resources Information Center

    Cotton, Bob

    2002-01-01

    Portrays the Sandra Day O'Connor High School in Helotes, Texas, whose architectural design, materials, and building forms reflect a rural Texas setting and a community wish that the large campus not overpower the nearby town. Includes photographs and a site plan. (GR)

  4. Stony Pont High School.

    ERIC Educational Resources Information Center

    Design Cost Data, 2001

    2001-01-01

    Includes information about the building site, architectural design, master plan, materials, costs, scheduling, specifications, and square footage for the 86-acre Stony Point High School in Round Rock, Texas. Includes floor plan, general description, photos, and a list of manufacturers and suppliers used for the project. (GR)

  5. High School Projects.

    ERIC Educational Resources Information Center

    Learning By Design, 2002

    2002-01-01

    Describes the buildings of 30 high schools, including the educational context and design goals. Includes information on the architects and design team, a general building description, and general construction costs and specifications. Also provides a rough site plan and photographs. (EV)

  6. Nongrading the High School.

    ERIC Educational Resources Information Center

    Jenkins, John M.

    1998-01-01

    Reviews the history of nongraded high schools, from Preston Search's pioneering efforts in Pueblo, Colorado, to early 1900s Dalton and Winnetka Plans and midcentury continuous-progress plans. Competency, not age, already determines participation in band, orchestra, choir, and athletics. Curricula should be based on the structure, methodology, and…

  7. High School Press Pressures.

    ERIC Educational Resources Information Center

    Rogers, Luella P.

    History shows that the high school press suffers through cycles that reflect economic factors and cultural climates within communities, states, and the nation. The direction of that cycle in the 1960s and early 1970s was toward more open, free-flowing information by a vigorous student press, but those economic and cultural signs now are pointing…

  8. Carthage High School Baseball.

    ERIC Educational Resources Information Center

    Woodfin, Samantha, Ed.

    1995-01-01

    This is the third issue of the magazine to focus on baseball in Panola County (Texas). The issue salutes the Carthage High School baseball program during two periods of its history. The first period was the early 1940's under Coach E. B. Morrison, whose teams were State Finalists in 1941 and 1942. The second period covered is the era of Coach…

  9. [Senior High School Program.

    ERIC Educational Resources Information Center

    Wisconsin Univ. - Stout, Menomonie. Center for Vocational, Technical and Adult Education.

    This student directed document contains five activity packages, a proposed curriculum, and a set of transparency masters; all pertain to field objectives 1, 4, or 5 of the Wisconsin Guide to Local Curriculum Improvement in Industrial Education, K-12. Geared to the junior and senior high school level, the packages are entitled: Co-op Program…

  10. Final Report to the Department of Energy on the 1994 International Accelerator School: Frontiers of Accelerator Technology

    SciTech Connect

    Harris, F.A.

    1998-09-17

    The international accelerator school on Frontiers of Accelerator Technology was organized jointly by the US Particle Accelerator School (Dr. Mel Month and Ms. Marilyn Paul), the CERN Accelerator School, and the KEK Accelerator School, and was hosted by the University of Hawaii. The course was held on Maui, Hawaii, November 3-9, 1994 and was made possible in part by a grant from the Department of Energy under award number DE-FG03-94ER40875, AMDT M006. The 1994 program was preceded by similar joint efforts held at Santa Margherita di Pula, Sardinia in February 1985, South Padre Island, Texas in October 1986, Anacapri, Italy in October 1988, Hilton Head Island, South Carolina in October 1990, and Benalmedena, Spain in October/November 1992. The most recent program was held in Montreux, Switzerland in May 1998. The purpose of the program is to disseminate knowledge on the latest ideas and developments in the technology of particle accelerators by bringing together known world experts and younger scientists in the field. It is intended for individuals with professional interest in accelerator physics and technology, for graduate students, for post-docs, for those interested in accelerator based sciences, and for scientific and engineering staff at industrial firms, especially those companies specializing in accelerator components.

  11. Electric rail gun projectile acceleration to high velocity

    NASA Technical Reports Server (NTRS)

    Bauer, D. P.; Mccormick, T. J.; Barber, J. P.

    1982-01-01

    Electric rail accelerators are being investigated for application in electric propulsion systems. Several electric propulsion applications require that the rail accelerator be capable of launching projectiles at velocities above 10 km/s. An experimental program was conducted to develop rail accelerator technology for high velocity projectile launch. Several 6 mm bore, 3 m long rail accelerators were fabricated. Projectiles with a mass of 0.2 g were accelerated by plasmas, carrying currents up to 150 kA. Experimental design and results are described. Results indicate that the accelerator performed as predicted for a fraction of the total projectile acceleration. The disparity between predicted and measured results are discussed.

  12. High-gradient compact linear accelerator

    DOEpatents

    Carder, Bruce M.

    1998-01-01

    A high-gradient linear accelerator comprises a solid-state stack in a vacuum of five sets of disc-shaped Blumlein modules each having a center hole through which particles are sequentially accelerated. Each Blumlein module is a sandwich of two outer conductive plates that bracket an inner conductive plate positioned between two dielectric plates with different thicknesses and dielectric constants. A third dielectric core in the shape of a hollow cylinder forms a casing down the series of center holes, and it has a dielectric constant different that the two dielectric plates that sandwich the inner conductive plate. In operation, all the inner conductive plates are charged to the same DC potential relative to the outer conductive plates. Next, all the inner conductive plates are simultaneously shorted to the outer conductive plates at the outer diameters. The signal short will propagate to the inner diameters at two different rates in each Blumlein module. A faster wave propagates quicker to the third dielectric core across the dielectric plates with the closer spacing and lower dielectric constant. When the faster wave reaches the inner extents of the outer and inner conductive plates, it reflects back outward and reverses the field in that segment of the dielectric core. All the field segments in the dielectric core are then in unipolar agreement until the slower wave finally propagates to the third dielectric core across the dielectric plates with the wider spacing and higher dielectric constant. During such unipolar agreement, particles in the core are accelerated with gradients that exceed twenty megavolts per meter.

  13. High-gradient compact linear accelerator

    DOEpatents

    Carder, B.M.

    1998-05-26

    A high-gradient linear accelerator comprises a solid-state stack in a vacuum of five sets of disc-shaped Blumlein modules each having a center hole through which particles are sequentially accelerated. Each Blumlein module is a sandwich of two outer conductive plates that bracket an inner conductive plate positioned between two dielectric plates with different thicknesses and dielectric constants. A third dielectric core in the shape of a hollow cylinder forms a casing down the series of center holes, and it has a dielectric constant different that the two dielectric plates that sandwich the inner conductive plate. In operation, all the inner conductive plates are charged to the same DC potential relative to the outer conductive plates. Next, all the inner conductive plates are simultaneously shorted to the outer conductive plates at the outer diameters. The signal short will propagate to the inner diameters at two different rates in each Blumlein module. A faster wave propagates quicker to the third dielectric core across the dielectric plates with the closer spacing and lower dielectric constant. When the faster wave reaches the inner extents of the outer and inner conductive plates, it reflects back outward and reverses the field in that segment of the dielectric core. All the field segments in the dielectric core are then in unipolar agreement until the slower wave finally propagates to the third dielectric core across the dielectric plates with the wider spacing and higher dielectric constant. During such unipolar agreement, particles in the core are accelerated with gradients that exceed twenty megavolts per meter. 10 figs.

  14. High-gradient compact linear accelerator

    SciTech Connect

    Carder, B.M.

    1995-12-31

    A high-gradient linear accelerator comprises a solid-state stack in a vacuum of five sets of disc-shaped Blumlein modules each having a center hole through which particles are sequentially accelerated. Each Blumlein module is a sandwich of two outer conductive plates that bracket an inner conductive plate positioned between two dielectric plates with different thicknesses and dielectric constants. A third dielectric core in the shape of a hollow cylinder forms a casing down the series of center holes, and it has a dielectric constant different that the two dielectric plates that sandwich the inner conductive plate. In operation, all the inner conductive plates are charged to the same DC potential relative to the outer conductive plates. Next, all the inner conductive plates are simultaneously shorted to the outer conductive plates at the outer diameters. The signal short will propagate to the inner diameters at two different rates in each Blumlein module. A faster wave propagates quicker to the third dielectric core across the dielectric plates with the closer spacing and lower dielectric constant. When the faster wave reaches the inner extents of the outer and inner conductive plates, it reflects back outward and reverses the field in that segment of the dielectric core. All the field segments in the dielectric core are then in unipolar agreement until the slower wave finally propagates to the third dielectric core across the dielectric plates with the wider spacing and higher dielectric constant. During such unipolar agreement, particles in the core are accelerated with gradients that exceed twenty megavolts per meter.

  15. Proton shock acceleration using a high contrast high intensity laser

    NASA Astrophysics Data System (ADS)

    Gauthier, Maxence; Roedel, Christian; Kim, Jongjin; Aurand, Bastian; Curry, Chandra; Goede, Sebastian; Propp, Adrienne; Goyon, Clement; Pak, Art; Kerr, Shaun; Ramakrishna, Bhuvanesh; Ruby, John; William, Jackson; Glenzer, Siegfried

    2015-11-01

    Laser-driven proton acceleration is a field of intense research due to the interesting characteristics of this novel particle source including high brightness, high maximum energy, high laminarity, and short duration. Although the ion beam characteristics are promising for many future applications, such as in the medical field or hybrid accelerators, the ion beam generated using TNSA, the acceleration mechanism commonly achieved, still need to be significantly improved. Several new alternative mechanisms have been proposed such as collisionless shock acceleration (CSA) in order to produce a mono-energetic ion beam favorable for those applications. We report the first results of an experiment performed with the TITAN laser system (JLF, LLNL) dedicated to the study of CSA using a high intensity (5x1019W/cm2) high contrast ps laser pulse focused on 55 μm thick CH and CD targets. We show that the proton spectrum generated during the interaction exhibits high-energy mono-energetic features along the laser axis, characteristic of a shock mechanism.

  16. Viewpoints: The High School Play.

    ERIC Educational Resources Information Center

    Harbison, Lawrence; And Others

    1981-01-01

    Presents opinions of professionals on the current state of the high school play. Participants include a playwright, play supplier, high school theater instructor, workshop leader, and play publisher. Discusses selection, production, and performance of plays. (JMF)

  17. School Uniforms in Urban Public High Schools

    ERIC Educational Resources Information Center

    Draa, Virginia Ann Bendel

    2005-01-01

    The purpose of this study was to determine whether or not the implementation of a mandatory uniform policy in urban public high schools improved school performance measures at the building level for rates of attendance, graduation, academic proficiency, and student conduct as measured by rates of suspensions and expulsions. Sixty-four secondary…

  18. Application of Plasma Waveguides to High Energy Accelerators

    SciTech Connect

    Milchberg, Howard

    2016-07-01

    This grant supported basic experimental, theoretical and computer simulation research into developing a compact, high pulse repetition rate laser accelerator using the direct laser acceleration mechanism in plasma-based slow wave structures.

  19. The High School Health Fair.

    ERIC Educational Resources Information Center

    Novick, Lloyd F.; And Others

    In response to unmet health needs of high school youth particularly those in ghetto schools, health fairs were organized at three inner-city high schools in New York. The purposes of all three fairs were similar: to disseminate health information, to perform selected health testing, to provide follow-up activities when necessary, and to engender…

  20. Parental Involvement in High Schools.

    ERIC Educational Resources Information Center

    Brian, Donna JG

    Although parental involvement is recommended at all levels of schooling, involvement of parents at the secondary level has not been well defined in the literature. This paper presents findings of a case study that examined three high schools with varying levels of parental involvement--the first, a large high school with a predominantly working…

  1. Arizona Academic Standards, High School

    ERIC Educational Resources Information Center

    Arizona Department of Education, 2009

    2009-01-01

    This publication contains Arizona public schools' updated academic standards for high school. The contents of this document contain: (1) The Arts Standard 2006--High School; (2) Comprehensive Health Education/Physical Activity Standards 1997--Proficiency and Distinction (Grades 9-12); (3) Foreign and Native Language Standards 1997--Proficiency and…

  2. High-current ion-ring accelerator

    SciTech Connect

    Sudan, R.N. )

    1993-03-15

    An accelerator concept is outlined which enables 10[sup 15] to 10[sup 18] ions in the form of a charge neutralized ion ring to be accelerated to GeV energies. A repetition rate of 10 Hz will deliver an average current in the range of 0.1 A.

  3. Acceleration of objects to high velocity by electromagnetic forces

    DOEpatents

    Post, Richard F

    2017-02-28

    Two exemplary approaches to the acceleration of projectiles are provided. Both approaches can utilize concepts associated with the Inductrack maglev system. Either of them provides an effective means of accelerating multi-kilogram projectiles to velocities of several kilometers per second, using launchers of order 10 meters in length, thus enabling the acceleration of projectiles to high velocities by electromagnetic forces.

  4. School Counselors' Perceptions and Experience with Acceleration as a Program Option for Gifted and Talented Students

    ERIC Educational Resources Information Center

    Wood, Susannah; Portman, Tarrell Awe Agahe; Cigrand, Dawnette L.; Colangelo, Nicholas

    2010-01-01

    This article presents findings from a national survey of 149 practicing school counselors who are members of the American School Counselor Association. The survey gathered information on school counselors' perceptions of and experiences with acceleration as a program option for gifted students. Results indicate that, although school counselors'…

  5. Distributed coupling high efficiency linear accelerator

    SciTech Connect

    Tantawi, Sami G.; Neilson, Jeffrey

    2016-07-19

    A microwave circuit for a linear accelerator includes multiple monolithic metallic cell plates stacked upon each other so that the beam axis passes vertically through a central acceleration cavity of each plate. Each plate has a directional coupler with coupling arms. A first coupling slot couples the directional coupler to an adjacent directional coupler of an adjacent cell plate, and a second coupling slot couples the directional coupler to the central acceleration cavity. Each directional coupler also has an iris protrusion spaced from corners joining the arms, a convex rounded corner at a first corner joining the arms, and a corner protrusion at a second corner joining the arms.

  6. High-efficiency acceleration of an electron beam in a plasma wakefield accelerator.

    PubMed

    Litos, M; Adli, E; An, W; Clarke, C I; Clayton, C E; Corde, S; Delahaye, J P; England, R J; Fisher, A S; Frederico, J; Gessner, S; Green, S Z; Hogan, M J; Joshi, C; Lu, W; Marsh, K A; Mori, W B; Muggli, P; Vafaei-Najafabadi, N; Walz, D; White, G; Wu, Z; Yakimenko, V; Yocky, G

    2014-11-06

    High-efficiency acceleration of charged particle beams at high gradients of energy gain per unit length is necessary to achieve an affordable and compact high-energy collider. The plasma wakefield accelerator is one concept being developed for this purpose. In plasma wakefield acceleration, a charge-density wake with high accelerating fields is driven by the passage of an ultra-relativistic bunch of charged particles (the drive bunch) through a plasma. If a second bunch of relativistic electrons (the trailing bunch) with sufficient charge follows in the wake of the drive bunch at an appropriate distance, it can be efficiently accelerated to high energy. Previous experiments using just a single 42-gigaelectronvolt drive bunch have accelerated electrons with a continuous energy spectrum and a maximum energy of up to 85 gigaelectronvolts from the tail of the same bunch in less than a metre of plasma. However, the total charge of these accelerated electrons was insufficient to extract a substantial amount of energy from the wake. Here we report high-efficiency acceleration of a discrete trailing bunch of electrons that contains sufficient charge to extract a substantial amount of energy from the high-gradient, nonlinear plasma wakefield accelerator. Specifically, we show the acceleration of about 74 picocoulombs of charge contained in the core of the trailing bunch in an accelerating gradient of about 4.4 gigavolts per metre. These core particles gain about 1.6 gigaelectronvolts of energy per particle, with a final energy spread as low as 0.7 per cent (2.0 per cent on average), and an energy-transfer efficiency from the wake to the bunch that can exceed 30 per cent (17.7 per cent on average). This acceleration of a distinct bunch of electrons containing a substantial charge and having a small energy spread with both a high accelerating gradient and a high energy-transfer efficiency represents a milestone in the development of plasma wakefield acceleration into a

  7. An Audit of Selected Private School Programs: Accelerated Christian Education, Alpha Omega, Mennonite Schools, Seventh-Day Adventist Schools, and A BEKA Instructional Resources.

    ERIC Educational Resources Information Center

    Alberta Dept. of Education, Edmonton.

    This report, commissioned by the Minister of Education of Alberta, reviews the programs of study and instructional materials used in four groups of approved private schools: schools using the Accelerated Christian Education curriculum; schools using the Alpha Omega program; Mennonite parochial schools; and Seventh Day Adventist schools. The review…

  8. High average power, high current pulsed accelerator technology

    SciTech Connect

    Neau, E.L.

    1995-05-01

    Which current pulsed accelerator technology was developed during the late 60`s through the late 80`s to satisfy the needs of various military related applications such as effects simulators, particle beam devices, free electron lasers, and as drivers for Inertial Confinement Fusion devices. The emphasis in these devices is to achieve very high peak power levels, with pulse lengths on the order of a few 10`s of nanoseconds, peak currents of up to 10`s of MA, and accelerating potentials of up to 10`s of MV. New which average power systems, incorporating thermal management techniques, are enabling the potential use of high peak power technology in a number of diverse industrial application areas such as materials processing, food processing, stack gas cleanup, and the destruction of organic contaminants. These systems employ semiconductor and saturable magnetic switches to achieve short pulse durations that can then be added to efficiently give MV accelerating, potentials while delivering average power levels of a few 100`s of kilowatts to perhaps many megawatts. The Repetitive High Energy Puled Power project is developing short-pulse, high current accelerator technology capable of generating beams with kJ`s of energy per pulse delivered to areas of 1000 cm{sup 2} or more using ions, electrons, or x-rays. Modular technology is employed to meet the needs of a variety of applications requiring from 100`s of kV to MV`s and from 10`s to 100`s of kA. Modest repetition rates, up to a few 100`s of pulses per second (PPS), allow these machines to deliver average currents on the order of a few 100`s of mA. The design and operation of the second generation 300 kW RHEPP-II machine, now being brought on-line to operate at 2.5 MV, 25 kA, and 100 PPS will be described in detail as one example of the new high average power, high current pulsed accelerator technology.

  9. High School Teen Mentoring Handbook

    ERIC Educational Resources Information Center

    Alberta Advanced Education and Technology, 2009

    2009-01-01

    Big Brothers Big Sisters Edmonton & Area, in partnership with Alberta Advanced Education and Technology, are providing the High School Teen Mentoring Program, a school-based mentoring program where mentor-mentee matches meet for one hour per week to engage in relationship-building activities at an elementary school. This initiative aims to…

  10. New Pulsed Power Technology for High Current Accelerators

    SciTech Connect

    Caporaso, G J

    2002-06-27

    Recent advances in solid-state modulators now permit the design of a new class of high current accelerators. These new accelerators will be able to operate in burst mode at frequencies of several MHz with unprecedented flexibility and precision in pulse format. These new modulators can drive accelerators to high average powers that far exceed those of any other technology and can be used to enable precision beam manipulations. New insulator technology combined with novel pulse forming lines and switching may enable the construction of a new type of high gradient, high current accelerator. Recent developments in these areas will be reviewed.

  11. Can Accelerators Accelerate Learning?

    NASA Astrophysics Data System (ADS)

    Santos, A. C. F.; Fonseca, P.; Coelho, L. F. S.

    2009-03-01

    The 'Young Talented' education program developed by the Brazilian State Funding Agency (FAPERJ) [1] makes it possible for high-schools students from public high schools to perform activities in scientific laboratories. In the Atomic and Molecular Physics Laboratory at Federal University of Rio de Janeiro (UFRJ), the students are confronted with modern research tools like the 1.7 MV ion accelerator. Being a user-friendly machine, the accelerator is easily manageable by the students, who can perform simple hands-on activities, stimulating interest in physics, and getting the students close to modern laboratory techniques.

  12. High School Completion Longitudinal Study

    ERIC Educational Resources Information Center

    Alberta Education, 2009

    2009-01-01

    While Alberta enjoys proven high, world-class results in student achievement, raising high school completion rates is one of the top priorities in improving the provincial education system. The 2011-12 targeted high school completion rate is 82% five years after entering Grade 10--a 2.5% increase from the current average rate of 79.5%. The purpose…

  13. Middle School Math Acceleration and Equitable Access to Eighth-Grade Algebra: Evidence from the Wake County Public School System

    ERIC Educational Resources Information Center

    Dougherty, Shaun M.; Goodman, Joshua S.; Hill, Darryl V.; Litke, Erica G.; Page, Lindsay C.

    2015-01-01

    Taking algebra by eighth grade is considered an important milestone on the pathway to college readiness. We highlight a collaboration to investigate one district's effort to increase middle school algebra course-taking. In 2010, the Wake County Public Schools began assigning middle school students to accelerated math and eighth-grade algebra based…

  14. High School Biology [Sahuarita High School Career Curriculum Project].

    ERIC Educational Resources Information Center

    Esser, Robert

    This course entitled "High School Biology: Introduction" is one of a series of instructional guides prepared by teachers for the Sahuarita High School (Arizona) Career Curriculum Project. It consists of six units of study, and 26 behavioral objectives relating to these units are stated. Also included are a brief introduction and an annotated list…

  15. School Incorporation and High School Completion among Latino Youth

    ERIC Educational Resources Information Center

    Reed, Katherine

    2015-01-01

    Using data from the Education Longitudinal Study of 2002, a nationally representative sample of US high school students, I investigate how features of secondary schools influence the likelihood of Latino students completing high school. To do so, I introduce the concept of school incorporation, which includes school policies, school receptivity…

  16. High-energy accelerator for beams of heavy ions

    DOEpatents

    Martin, Ronald L.; Arnold, Richard C.

    1978-01-01

    An apparatus for accelerating heavy ions to high energies and directing the accelerated ions at a target comprises a source of singly ionized heavy ions of an element or compound of greater than 100 atomic mass units, means for accelerating the heavy ions, a storage ring for accumulating the accelerated heavy ions and switching means for switching the heavy ions from the storage ring to strike a target substantially simultaneously from a plurality of directions. In a particular embodiment the heavy ion that is accelerated is singly ionized hydrogen iodide. After acceleration, if the beam is of molecular ions, the ions are dissociated to leave an accelerated singly ionized atomic ion in a beam. Extraction of the beam may be accomplished by stripping all the electrons from the atomic ion to switch the beam from the storage ring by bending it in magnetic field of the storage ring.

  17. Bullying in elementary school, high school, and college.

    PubMed

    Chapell, Mark S; Hasselman, Stefanie L; Kitchin, Theresa; Lomon, Safiya N; MacIver, Kenneth W; Sarullo, Patrick L

    2006-01-01

    This study investigated the continuity in being a bully, victim, or bully-victim from elementary school through college in 119 undergraduates. Of 25 who bullied in college, 18 (72%) had been bullied in high school and elementary school. Of 26 bullies in college, 14 (53.8%) had been bullies in high school and elementary school. Of 12 bully-victims in college, 5 (41.6%) had been bully-victims in high school and elementary school. There were significant positive correlations between being a bully in college, high school, and elementary school, and being bullied in college and high school, and high school and elementary school, and between being both a bully and victim in elementary school, a bully and victim in high school, and a bully and victim in college.

  18. Project Georgia High School/High Tech

    NASA Technical Reports Server (NTRS)

    2000-01-01

    Georgia High School/High Tech has been developing a suggested curriculum for use in its programs. The purpose of this instructional material is to provide a basic curriculum format for teachers of High School/High Tech students. The curriculum is designed to implement QCC classroom instruction that encourages career development in technological fields through post-secondary education, paid summer internships, and exposure to experiences in high technology.

  19. Bringing the High Court to High School.

    ERIC Educational Resources Information Center

    Raskin, Jamin B.

    2002-01-01

    Describes the Marshall-Brennan Fellowship constitutional literacy project wherein 30 pairs of law students at the Washington College of Law teach a constitutional rights and responsibilities course to high school students in Washington, D.C., and Maryland public high schools. Students are also taken to hear oral arguments at the Supreme Court.…

  20. High-Flying High-Poverty Schools

    ERIC Educational Resources Information Center

    American Educator, 2013

    2013-01-01

    In discussing socioeconomic integration before audiences, the author is frequently asked: What about high-poverty schools that do work? Don't they suggest that economic segregation isn't much of a problem after all? High-poverty public schools that beat the odds paint a heartening story that often attracts considerable media attention. In 2000,…

  1. Fermilab Tevatron high level RF accelerating systems

    NASA Astrophysics Data System (ADS)

    Kerns, Q.; Kerns, C.; Miller, H.; Tawser, S.; Reid, J.; Webber, R.; Wildman, D.

    1985-06-01

    Eight tuned RF cavities have been installed and operated in the F0 straight section of the Tevatron. Their mechanical placement along the beam line enables them to be operated for colliding beams as two independent groups of four cavities, group 1-4 accelerating antiprotons and group 5-8 accelerating protons. The only difference is that the spacing between cavities 4 and 5 was increased to stay clear of the F0 colliding point. The cavities can easily be rephased by switching cables in a low-level distribution system (fan-out) so that the full accelerating capability of all eight cavities can be used during a fixed target operations. Likewise, the cables from capacitive probes on each cavity gap can be switched to proper lengths and summed in a fan-back system to give an RF signal representing the amplitude and phase as seen by the beam separately for protons and antiprotons. Such signals have been used to phase lock the Tevatron to the Main Ring for synchronous transfer.

  2. Leadership Practices Accelerate into High Speed

    ERIC Educational Resources Information Center

    Novak, Dori; Reilly, Marceta; Williams, Diana

    2010-01-01

    In fall 2006, the deputy superintendent of Howard County Schools in Maryland asked a small leadership team to rethink leadership support for central office leaders and to come up with an aligned three-point plan that would meet their unique needs. The leadership support system needed to take into account: (1) Leadership standards and indicators of…

  3. Drift tube suspension for high intensity linear accelerators

    DOEpatents

    Liska, D.J.; Schamaun, R.G.; Clark, D.C.; Potter, R.C.; Frank, J.A.

    1980-03-11

    The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.

  4. Drift tube suspension for high intensity linear accelerators

    DOEpatents

    Liska, Donald J.; Schamaun, Roger G.; Clark, Donald C.; Potter, R. Christopher; Frank, Joseph A.

    1982-01-01

    The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.

  5. High School Teachers and High School Reform: A Phenomenological Study of the Influence of Teachers' High School Experience regarding Their High School Teaching Experience

    ERIC Educational Resources Information Center

    Augustine, Dwaine Keith

    2009-01-01

    This study explored the effects of the lived high school experiences of high school teachers and how those experiences may inform researchers regarding high school reform. One aim was to investigate how teachers' experiences during high school influenced their thoughts or behaviors toward high school as a rite of passage, epiphany, or critical…

  6. Bullying in Elementary School, High School, and College

    ERIC Educational Resources Information Center

    Chapell, Mark S.; Hasselman, Stefanie L.; Kitchin, Theresa; Lomon, Safiya N.; MacIver, Kenneth W.; Sarullo, Patrick L.

    2006-01-01

    This study investigated the continuity in being a bully, victim, or bully-victim from elementary school through college in 119 undergraduates. Of 25 who bullied in college, 18 (72%) had been bullied in high school and elementary school. Of 26 bullies in college, 14 (53.8%) had been bullies in high school and elementary school. Of 12 bully-victims…

  7. Supporting High School Graduation Aspirations among Latino Middle School Students

    ERIC Educational Resources Information Center

    Lys, Diana B.

    2009-01-01

    The purpose of this study was to investigate the perceptions Latino eighth grade students have of school and schooling factors as they transition to high school and the factors that may influence their self-perceived likelihood of graduating from high school. Middle schools are poised to help Latino students prepare themselves for a smoother…

  8. Authoritative School Climate and High School Dropout Rates

    ERIC Educational Resources Information Center

    Jia, Yuane; Konold, Timothy R.; Cornell, Dewey

    2016-01-01

    This study tested the association between school-wide measures of an authoritative school climate and high school dropout rates in a statewide sample of 315 high schools. Regression models at the school level of analysis used teacher and student measures of disciplinary structure, student support, and academic expectations to predict overall high…

  9. High Schools Try out RTI

    ERIC Educational Resources Information Center

    Samuels, Christina A.

    2009-01-01

    "Response to intervention" (RTI) as a model for boosting student achievement has taken off like wildfire. When it comes to research on how best to implement the process for students in middle and high school, though, the flame abruptly fizzles out. There's little RTI research that is specific to secondary schools, although it has been…

  10. Minnesota State High School League.

    ERIC Educational Resources Information Center

    Minnesota State Office of the Legislative Auditor, St. Paul. Program Evaluation Div.

    The Minnesota State High School League administers a program of competitive athletic, musical, speech, and dramatics activities at district, region, and state levels. The league is a voluntary association of 433 public and 49 private schools. This monograph reports on a study of the league in regard to two questions: (1) Are policy-making and…

  11. Participatory Budgeting in High School.

    ERIC Educational Resources Information Center

    Harman, William T.

    1989-01-01

    Describes and analyzes a participatory approach to budgetary decision-making used by an exemplary high school. In spite of the budgetary forces dividing instructional departments, support units, and administration, an equitable division of resources provided to the school was consistently achieved each year. Includes 29 references. (MLH)

  12. LONGITUDINAL DYNAMICS IN HIGH FREQUENCY FFAG RECIRCULATING ACCELERATORS.

    SciTech Connect

    BERG,J.S.

    2002-04-08

    A recirculating accelerator accelerates the beam by passing through accelerating cavities multiple times. An FFAG recirculating accelerator uses a single arc to connect the linacs together, as opposed to multiple arcs for the different energies. For most scenarios using high-frequency RF, it is impractical to change the phase of the RF on each pass, at least for lower energy accelerators. Ideally, therefore, the WAG arc will be isochronous, so that the particles come back to the same phase (on-crest) on each linac pass. However, it is not possible to make the FFAG arcs isochronous (compared to the RF period) over a large energy range. This paper demonstrates that one can nonetheless make an WAG recirculating accelerator work. Given the arc's path length as a function of energy and the number of turns to accelerate for, one can find the minimum voltage (and corresponding initial conditions) required to accelerate a reference particle to the desired energy. I also briefly examine how the longitudinal acceptance varies with the number of turns that one accelerates.

  13. From Inspection to School Improvement? Evaluating the Accelerated Inspection Programme in Waltham Forest.

    ERIC Educational Resources Information Center

    Hopkins, David; Harris, Alma; Watling, Rob; Beresford, John

    1999-01-01

    Outlines the main findings from the evaluation of the Accelerated Inspection Programme (AIP) in Waltham Forest under three main phases (pre-inspection, inspection, and post inspection). Focuses on the relationship between inspection and school improvement. Discusses the recommendations. (CMK)

  14. High-performance computing in accelerating structure design and analysis

    NASA Astrophysics Data System (ADS)

    Li, Zenghai; Folwell, Nathan; Ge, Lixin; Guetz, Adam; Ivanov, Valentin; Kowalski, Marc; Lee, Lie-Quan; Ng, Cho-Kuen; Schussman, Greg; Stingelin, Lukas; Uplenchwar, Ravindra; Wolf, Michael; Xiao, Liling; Ko, Kwok

    2006-03-01

    Future high-energy accelerators such as the Next Linear Collider (NLC) will accelerate multi-bunch beams of high current and low emittance to obtain high luminosity, which put stringent requirements on the accelerating structures for efficiency and beam stability. While numerical modeling has been quite standard in accelerator R&D, designing the NLC accelerating structure required a new simulation capability because of the geometric complexity and level of accuracy involved. Under the US DOE Advanced Computing initiatives (first the Grand Challenge and now SciDAC), SLAC has developed a suite of electromagnetic codes based on unstructured grids and utilizing high-performance computing to provide an advanced tool for modeling structures at accuracies and scales previously not possible. This paper will discuss the code development and computational science research (e.g. domain decomposition, scalable eigensolvers, adaptive mesh refinement) that have enabled the large-scale simulations needed for meeting the computational challenges posed by the NLC as well as projects such as the PEP-II and RIA. Numerical results will be presented to show how high-performance computing has made a qualitative improvement in accelerator structure modeling for these accelerators, either at the component level (single cell optimization), or on the scale of an entire structure (beam heating and long-range wakefields).

  15. High-Performance Computing in Accelerating Structure Design And Analysis

    SciTech Connect

    Li, Z.H.; Folwell, N.; Ge, Li-Xin; Guetz, A.; Ivanov, V.; Kowalski, M.; Lee, L.Q.; Ng, C.K.; Schussman, G.; Stingelin, L.; Uplenchwar, R.; Wolf, M.; Xiao, L.L.; Ko, K.; /SLAC /PSI, Villigen /Illinois U., Urbana

    2006-06-27

    Future high-energy accelerators such as the Next Linear Collider (NLC) will accelerate multi-bunch beams of high current and low emittance to obtain high luminosity, which put stringent requirements on the accelerating structures for efficiency and beam stability. While numerical modeling has been quite standard in accelerator R&D, designing the NLC accelerating structure required a new simulation capability because of the geometric complexity and level of accuracy involved. Under the US DOE Advanced Computing initiatives (first the Grand Challenge and now SciDAC), SLAC has developed a suite of electromagnetic codes based on unstructured grids and utilizing high performance computing to provide an advanced tool for modeling structures at accuracies and scales previously not possible. This paper will discuss the code development and computational science research (e.g. domain decomposition, scalable eigensolvers, adaptive mesh refinement) that have enabled the large-scale simulations needed for meeting the computational challenges posed by the NLC as well as projects such as the PEP-II and RIA. Numerical results will be presented to show how high performance computing has made a qualitative improvement in accelerator structure modeling for these accelerators, either at the component level (single cell optimization), or on the scale of an entire structure (beam heating and long range wakefields).

  16. SLIM, Short-pulse Technology for High Gradient Induction Accelerators

    SciTech Connect

    Arntz, Floyd; Kardo-Sysoev, A.; Krasnykh, A.; /SLAC

    2008-12-16

    A novel short-pulse concept (SLIM) suited to a new generation of a high gradient induction particle accelerators is described herein. It applies advanced solid state semiconductor technology and modern microfabrication techniques to a coreless induction method of charged particle acceleration first proven on a macro scale in the 1960's. Because this approach avoids use of magnetic materials there is the prospect of such an accelerator working efficiently with accelerating pulses in the nanosecond range and, potentially, at megahertz pulse rates. The principal accelerator section is envisioned as a stack of coreless induction cells, the only active element within each being a single, extremely fast (subnanosecond) solid state opening switch: a Drift Step Recovery Diode (DSRD). Each coreless induction cell incorporates an electromagnetic pulse compressor in which inductive energy developed within a transmission-line feed structure over a period of tens of nanoseconds is diverted to the acceleration of the passing charge packet for a few nanoseconds by the abrupt opening of the DSRD switch. The duration of this accelerating output pulse--typically two-to-four nanoseconds--is precisely determined by a microfabricated pulse forming line connected to the cell. Because the accelerating pulse is only nanoseconds in duration, longitudinal accelerating gradients approaching 100 MeV per meter are believed to be achievable without inciting breakdown. Further benefits of this approach are that, (1) only a low voltage power supply is required to produce the high accelerating gradient, and, (2) since the DSRD switch is normally closed, voltage stress is limited to a few nanoseconds per period, hence the susceptibility to hostile environment conditions such as ionizing radiation, mismatch (e.g. in medical applications the peak beam current may be low), strong electromagnetic noise levels, etc is expected to be minimal. Finally, we observe the SLIM concept is not limited to linac

  17. Superconducting Accelerating Structure for High-Current Cyclotrons for Accelerator-Driven Subcritical Fission

    NASA Astrophysics Data System (ADS)

    Pogue, Nathaniel; McIntyre, Peter; Sattarov, Akhdiyor

    2011-10-01

    An accelerator driven molten salt fission core is being designed to provide reliable power by subcritical nuclear fission for the next few millennia. Fission is driven by proton beams from a flux-coupled stack of three high-current cyclotrons. A key innovation in attaining the needed beam current and efficiency is a superconducting Niobium rf accelerating cavity that can accelerate bunches in the 200 orbits uniformly. The unique design allows for several cavities to be stacked, and also provides uniform acceleration and eliminates higher order modes in the cyclotron. The design and properties of the superconducting cavity will increase the efficiency of the cyclotron and the overall energy amplification from the molten salt core by an order of magnitude compared to conventional designs.

  18. Project Georgia High School/High Tech

    NASA Technical Reports Server (NTRS)

    2000-01-01

    The High School/High Tech initiative of the President's Committee on Employment of Disabilities, Georgia's application of the collaborative "Georgia Model" and NASA's commitment of funding have shown that opportunities for High School/High Tech students are unlimited. In Georgia, the partnership approach to meeting the needs of this program has opened doors previously closed. As the program grows and develops, reflecting the needs of our students and the marketplace, more opportunities will be available. Our collaboratives are there to provide these opportunities and meet the challenge of matching our students with appropriate education and career goals. Summing up the activities and outcomes of Project Georgia High School/High Tech is not difficult. Significant outcomes have already occurred in the Savannah area as a result of NASA's grant. The support of NASA has enabled Georgia Committee to "grow" High School/High Tech throughout the region-and, by example, the state. The success of the Columbus pilot project has fostered the proliferation of projects, resulting in more than 30 Georgia High School High Tech programs-with eight in the Savannah area.

  19. High School Teachers as Astronomers

    ERIC Educational Resources Information Center

    Sather, Robert

    1977-01-01

    Discusses a joint research program between several high school teachers and solar system astronomers in which data were collected on photoelectric observations of asteroids and minor planets via astronomical telescopes. (MLH)

  20. High School with No Walls

    ERIC Educational Resources Information Center

    Resnik, Henry S.

    1970-01-01

    An experimental high school program in Philadelphia, in which the students spend the day in various parts of the city and have an unusual curriculum, has met with a great deal of success and approval. (CK)

  1. Programming for High School Teachers

    NASA Astrophysics Data System (ADS)

    2009-08-01

    All portions of the High School Program will take place Sunday, August 16, and Monday, August 17, in the Grand Hyatt Washington Hotel, 1000 H Street, NW, Washington, DC. All attendees must register for the meeting to participate in the technical sessions and programs. Registration provides full access to the special High School Chemistry Day program, the entire ACS meeting (Sunday-Thursday), and the Exposition (Sunday evening-Wednesday). Attendees can track professional development (based on clock hours) for sessions attended at the ACS National Meeting. On completion and submission of ACS forms, participants will be mailed a certificate documenting their participation in the conference. The Organizer for the High School Program is Elena Pisciotta, who teaches at Damascus High School, Damascus, MD.

  2. Estimating Reading Growth Attributable to Accelerated Reader at One American School in the Caribbean

    ERIC Educational Resources Information Center

    Foster, David K.; Foster, Dean P.

    2014-01-01

    This article provides a statistical analysis of the reading gains observed at one American school in the Caribbean that was using Accelerated Reader. It provides an estimate of the number of hours students needed to read to advance their reading performance an additional year. The authors estimate how much Accelerated Reader contributed to the…

  3. High-power microwaves for defense and accelerator applications

    SciTech Connect

    Manheimer, W. )

    1992-03-11

    This paper discusses high-power microwaves for application to the Defense Department and to the powering of large accelerators. The microwave sources discussed are the SLAC klystron, the relativistic klystron, the magnetron and the vircator.

  4. The 1993 European school of high-energy physis

    NASA Astrophysics Data System (ADS)

    Ellis, N.

    1994-06-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on quantum field theory, quantum chromodynamics, CP violation, radiative corrections, cosmology, particle detectors and e(+)e(-) accelerators, as well as reports on results from Hadron - Electron - Ring - Accelerator (HERA) and Laboratory for Extraterrestial Physics (LEP) and accounts of particle physics research at CERN and in Poland and Russia.

  5. The Opinions of High School Principals about Their Schools' Reputation

    ERIC Educational Resources Information Center

    Aksu, Ali; Orcan, Asli

    2015-01-01

    With a notice that was issued by the Ministry of National Education, all the public high schools were gradually converted into Anatolian High School as of 2010. The aim of this research is to determine the criteria of school reputation of Anatolian High schools and how and to what extent the criteria changed after the notice was issued.…

  6. High School Employment, School Performance, and College Entry

    ERIC Educational Resources Information Center

    Lee, Chanyoung; Orazem, Peter F.

    2010-01-01

    The proportion of U.S. high school students working during the school year ranges from 23% in the freshman year to 75% in the senior year. This study estimates how cumulative work histories during the high school years affect probability of dropout, high school academic performance, and the probability of attending college. Variations in…

  7. Future Accelerator Challenges in Support of High-Energy Physics

    SciTech Connect

    Zisman, Michael S.; Zisman, M.S.

    2008-05-03

    Historically, progress in high-energy physics has largely been determined by development of more capable particle accelerators. This trend continues today with the imminent commissioning of the Large Hadron Collider at CERN, and the worldwide development effort toward the International Linear Collider. Looking ahead, there are two scientific areas ripe for further exploration--the energy frontier and the precision frontier. To explore the energy frontier, two approaches toward multi-TeV beams are being studied, an electron-positron linear collider based on a novel two-beam powering system (CLIC), and a Muon Collider. Work on the precision frontier involves accelerators with very high intensity, including a Super-BFactory and a muon-based Neutrino Factory. Without question, one of the most promising approaches is the development of muon-beam accelerators. Such machines have very high scientific potential, and would substantially advance the state-of-the-art in accelerator design. The challenges of the new generation of accelerators, and how these can be accommodated in the accelerator design, are described. To reap their scientific benefits, all of these frontier accelerators will require sophisticated instrumentation to characterize the beam and control it with unprecedented precision.

  8. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2001-06-01

    My five-year term as Secondary School Chemistry Editor is coming to a close. I am excited about the direction the Journal has taken in relation to high school teachers, and challenge my successor to remain focused on the changing needs of high school teachers so that the Journal may continue to be the resource for teachers, both new and seasoned. If you have a vision of how to carry on JCE's mission for high school teachers, I encourage you to refer here for more information about the position and how to apply for it. Literature Cited

    1. National Commission on Mathematics and Science Education for the 21st Century, Before It's Too Late (accessed Apr 2001).
    2. Moore, J. W. J. Chem. Educ. 2000, 77, 1535.
    3. Bush, G. W. No Child Left Behind (accessed Apr 2001).

  9. Participation in Summer School and High School Graduation in the Sun Valley High School District

    ERIC Educational Resources Information Center

    Trujillo, Gabriel

    2012-01-01

    This study examines the effectiveness of a summer school credit recovery program in the Sun Valley High School District. Using logistic regression I assess the relationship between race, gender, course failure, school of origin and summer school participation for a sample of students that failed one or more classes in their first year of high…

  10. HIGH POWER OPERATIONS AT THE LOW ENERGY DEMONSTRATION ACCELERATOR (LEDA)

    SciTech Connect

    M. DURAN; V. R. HARRIS

    2001-01-01

    Recently, the Low-Energy Demonstration Accelerator (LEDA) portion of the Accelerator Production of Tritium (APT) project reached its 100-mA, 8-hr continuous wave (CW) beam operation milestone. The LEDA accelerator is a prototype of the low-energy front-end of the linear accelerator (linac) that would have been used in an APT plant. LEDA consists of a 75-keV proton injector, 6.7-MeV, 350-MHz CW radio-frequency quadrupole (RFQ) with associated high-power and low-level RF systems, a short high-energy beam transport (HEBT) and high-power (670-kW CW) beam dump. Details of the LEDA design features will be discussed along with the operational health physics experiences that occurred during the LEDA commissioning phase.

  11. Carpet Aids Learning in High Performance Schools

    ERIC Educational Resources Information Center

    Hurd, Frank

    2009-01-01

    The Healthy and High Performance Schools Act of 2002 has set specific federal guidelines for school design, and developed a federal/state partnership program to assist local districts in their school planning. According to the Collaborative for High Performance Schools (CHPS), high-performance schools are, among other things, healthy, comfortable,…

  12. Computer Utilization in Middle Tennessee High Schools.

    ERIC Educational Resources Information Center

    Lucas, Sam

    In order to determine the capacity of high schools to profit from the pre-high school computer experiences of its students, a study was conducted to measure computer utilization in selected high schools of Middle Tennessee. Questionnaires distributed to 50 principals in 28 school systems covered the following areas: school enrollment; number and…

  13. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-09-01

    Secondary School Feature Articles * Authentic Research within the Grasp of High School Students, by Annis Hapkiewicz, p 1212 * JCE Classroom Activity #19: Blueprint Photography by the Cyanotype Process, by Glen D. Lawrence and Stuart Fishelson, p 1216A Author Recognition A new program has been instituted to recognize high school teachers who are authors or coauthors of manuscripts published in the Journal. In May, letters were sent to teachers who wrote articles published in JCE beginning with Volume 74 (1997). If you were an author, you should have received a letter from us in late May or early June stating that your high school principal has been sent a Certificate of High School Author Recognition to be presented to you at a suitable occasion. Because the letters were sent late in the school year, you may not see the certificate until fall, or you may not receive your letter until then if we had only your school address. If you have authored or coauthored an article published in JCE and did not receive a letter, please contact me using the information about the Secondary School Chemistry Editor appearing on the Information Page in this issue. Syllabus Swap In the August issue, this column contained an invitation to exchange high school syllabi. The day after my copy of the August issue arrived, I received an email from a teacher indicating an interest in participating in an exchange. If you are interested, check the August "Especially for High School Chemistry Teachers" column for a brief discussion of the informal exchange program, or contact me. Research Conducted by High School Students In his June 1999 editorial "Learning Is a Do-It-Yourself Activity", p 725, John Moore wrote about the need to engage students actively in the learning process. As I have mentioned in this column previously, research conducted by students is one means of accomplishing this goal. In this issue, p 1212, Annis Hapkiewicz explains how she has drawn her Okemos [Michigan] High

  14. Evolving an Accelerated School Model through Student Perceptions and Student Outcome Data

    ERIC Educational Resources Information Center

    Braun, Donna L.; Gable, Robert K.; Billups, Felice D.; Vieira, Mary; Blasczak, Danielle

    2016-01-01

    A mixed methods convergent evaluation informed the redesign of an innovative public school that uses an accelerated model to serve grades 7-9 students who have been retained in grade level and are at risk for dropping out of school. After over 25 years in operation, a shift of practices/policies away from grade retention and toward social…

  15. A HIGH REPETITION PLASMA MIRROR FOR STAGED ELECTRON ACCELERATION

    SciTech Connect

    Sokollik, Thomas; Shiraishi, Satomi; Osterhoff, Jens; Evans, Eugene; Gonsalves, Anthony; Nakamura, Kei; vanTilborg, Jeroen; Lin, Chen; Toth, Csaba; Leemans, Wim

    2011-07-22

    In order to build a compact, staged laser plasma accelerator the in-coupling of the laser beam to the different stages represents one of the key issues. To limit the spatial foot print and thus to realize a high overall acceleration gradient, a concept has to be found which realizes this in-coupling within a few centimeters. We present experiments on a tape-drive based plasma mirror which could be used to reflect the focused laser beam into the acceleration stage.

  16. High School of the Future

    ERIC Educational Resources Information Center

    Jacobs, Joanne

    2016-01-01

    There are no bells at Salt Lake City's Innovations Early College High School, and there are no traditional "classes." Students show up when they like, putting in six and a half hours at school between 7:00 a.m. and 5:00 p.m. Working with a mentor teacher, students set their own goals and move through self-paced online lessons. They can…

  17. Status of high temperature superconductor development for accelerator magnets

    NASA Technical Reports Server (NTRS)

    Hirabayashi, H.

    1995-01-01

    High temperature superconductors are still under development for various applications. As far as conductors for magnets are concerned, the development has just been started. Small coils wound by silver sheathed Bi-2212 and Bi-2223 oxide conductors have been reported by a few authors. Essential properties of high T(sub c) superconductors like pinning force, coherent length, intergrain coupling, weak link, thermal property, AC loss and mechanical strength are still not sufficiently understandable. In this talk, a review is given with comparison between the present achievement and the final requirement for high T(sub c) superconductors, which could be particularly used in accelerator magnets. Discussions on how to develop high T(sub c) superconductors for accelerator magnets are included with key parameters of essential properties. A proposal of how to make a prototype accelerator magnet with high T(sub c) superconductors with prospect for future development is also given.

  18. Credentialing high school psychology teachers.

    PubMed

    Weaver, Kenneth A

    2014-09-01

    The National Standards for High School Psychology Curricula (American Psychological Association, 2013b) require a teacher with considerable psychology content knowledge to teach high school psychology courses effectively. In this study, I examined the initial teaching credential requirements for high school psychology teachers in the 50 states plus the District of Columbia. Thirty-four states (the District of Columbia is included as a state) require the social studies credential to teach high school psychology. An analysis of the items on standardized tests used by states to validate the content knowledge required to teach social studies indicates little or no presence of psychology, a reflection of psychology's meager presence in the social studies teacher preparation curricula. Thus, new teachers with the social studies teaching credential are not prepared to teach high school psychology according to the National Standards. Approval of The College, Career, and Civic Life (C3) Framework for Social Studies State Standards: Guidance for Enhancing the Rigor of K-12 Civics, Economics, Geography, and History (National Council for the Social Studies, 2013) presents an opportunity to advocate for establishing a psychology credential in the 34 states.

  19. A High Reliability Accelerator Control System

    NASA Astrophysics Data System (ADS)

    Callahan, John; Collins, John; Hunt, William; Qualls, Andrew

    1997-05-01

    This paper describes the control system developed at IUCF for the Cooler Injector Synchrotron (CIS). The Hardware system is VME based and employs fiber optic data transmission for high noise rejection. The hardware includes several modules designed and manufactured at IUCF to meet specifications not attainable with commercial hardware. These modules feature active redundancy with automatic switch over for high reliability; built in test and self diagnosis with centralized failure and system health monitoring for rapid maintenance; and very low drift and self calibration for maximum repeatability. We describe several modules including high precision ramping and non-ramping DAC/ADCs and a deep memory timing sequencer. We give a brief overview of the software system, which is based on Vsystem from Vista, Inc.

  20. High School Dropouts in California

    ERIC Educational Resources Information Center

    Lucile Packard Foundation for Children's Health, 2011

    2011-01-01

    Kidsdata.org shows the California Department of Education's adjusted four-year derived dropout rate, which reflects the estimated percentage of public high school dropouts over four years based on a single year's data, and the grade 9-12 dropout count. Data also are provided by race/ethnicity. This paper presents the statistics on high school…

  1. The New American High School.

    ERIC Educational Resources Information Center

    Marsh, David D., Ed.; Codding, Judy B., Ed.

    This book proposes strategies for improving high schools based on high standards, particularly the idea of the Certificate of Initial Mastery (CIM), and discusses changes necessary to ensure that all students attain mastery. Part 1, "Where We Are and Where We Ought to Be," contains two chapters. In "Just Passing Through: The Life of…

  2. High-brightness rf linear accelerators

    SciTech Connect

    Jameson, R.A.

    1986-01-01

    The issue of high brightness and its ramifications in linacs driven by radio-frequency fields is discussed. A history of the RF linacs is reviewed briefly. Some current applications are then examined that are driving progress in RF linacs. The physics affecting the brightness of RF linacs is then discussed, followed by the economic feasibility of higher brightness machines. (LEW)

  3. High Energy Density Physics and Exotic Acceleration Schemes

    SciTech Connect

    Cowan, T.; Colby, E.; /SLAC

    2005-09-27

    The High Energy Density and Exotic Acceleration working group took as our goal to reach beyond the community of plasma accelerator research with its applications to high energy physics, to promote exchange with other disciplines which are challenged by related and demanding beam physics issues. The scope of the group was to cover particle acceleration and beam transport that, unlike other groups at AAC, are not mediated by plasmas or by electromagnetic structures. At this Workshop, we saw an impressive advancement from years past in the area of Vacuum Acceleration, for example with the LEAP experiment at Stanford. And we saw an influx of exciting new beam physics topics involving particle propagation inside of solid-density plasmas or at extremely high charge density, particularly in the areas of laser acceleration of ions, and extreme beams for fusion energy research, including Heavy-ion Inertial Fusion beam physics. One example of the importance and extreme nature of beam physics in HED research is the requirement in the Fast Ignitor scheme of inertial fusion to heat a compressed DT fusion pellet to keV temperatures by injection of laser-driven electron or ion beams of giga-Amp current. Even in modest experiments presently being performed on the laser-acceleration of ions from solids, mega-amp currents of MeV electrons must be transported through solid foils, requiring almost complete return current neutralization, and giving rise to a wide variety of beam-plasma instabilities. As keynote talks our group promoted Ion Acceleration (plenary talk by A. MacKinnon), which historically has grown out of inertial fusion research, and HIF Accelerator Research (invited talk by A. Friedman), which will require impressive advancements in space-charge-limited ion beam physics and in understanding the generation and transport of neutralized ion beams. A unifying aspect of High Energy Density applications was the physics of particle beams inside of solids, which is proving to

  4. High School Graduate Enrollment Trends. Focus Study.

    ERIC Educational Resources Information Center

    Mount San Antonio Coll., Walnut, CA.

    A study conducted at Mount San Antonio College (MSAC), California, to determine trends in the number of high school graduates in the MSAC district; the percentage of high school graduates attending MSAC; retention in district high schools between the ninth and twelfth grade; high school performance on California Assessment Program (CAP) Tests;…

  5. High School Economic Composition and College Persistence

    ERIC Educational Resources Information Center

    Niu, Sunny X.; Tienda, Marta

    2013-01-01

    Using a longitudinal sample of Texas high school seniors of 2002 who enrolled in college within the calendar year of high school graduation, we examine variation in college persistence according to the economic composition of their high schools, which serves as a proxy for unmeasured high school attributes that are conductive to postsecondary…

  6. Dust Accelerators And Their Applications In High-Temperature Plasmas

    SciTech Connect

    Ticos, Catalin M.; Wang Zhehui

    2011-06-01

    The perennial presence of dust in high-temperature plasma and fusion devices has been firmly established. Dust inventory must be controlled, in particular in the next-generation steady-state fusion machines like ITER, as it can pose significant safety hazards and potentially interfere with fusion energy production. Although much effort has been devoted to getting rid of the dust nuisance, there are instances where a controlled use of dust can be beneficial. We have recognized a number of dust-accelerators applications in magnetic fusion, including in plasma diagnostics, in studying dust-plasma interactions, and more recently in edge localized mode (ELM)'s pacing. With the applications in mind, we will compare various acceleration methods, including electrostatic, gas-drag, and plasma-drag acceleration. We will also describe laboratory experiments and results on dust acceleration.

  7. Dust accelerators and their applications in high-temperature plasmas

    SciTech Connect

    Wang, Zhehui; Ticos, Catakin M

    2010-01-01

    The perennial presence of dust in high-temperature plasma and fusion devices has been firmly established. Dust inventory must be controlled, in particular in the next-generation steady-state fusion machines like ITER, as it can pose significant safety hazards and potentially interfere with fusion energy production. Much effort has been devoted to gening rid of the dust nuisance. We have recognized a number of dust-accelerators applications in magnetic fusion, including in plasma diagnostics, in studying dust-plasma interactions, and more recently in edge localized mode (ELM)'s pacing. With the applications in mind, we will compare various acceleration methods, including electrostatic, gas-drag, and plasma-drag acceleration. We will also describe laboratory experiments and results on dust acceleration.

  8. A phenomenological cost model for high energy particle accelerators

    NASA Astrophysics Data System (ADS)

    Shiltsev, V.

    2014-07-01

    Accelerator-based facilities have enabled forefront research in high-energy physics for more than half a century. The accelerator technology of colliders has progressed immensely, while beam energy, luminosity, facility size, and cost have grown by several orders of magnitude. The method of colliding beams has not fully exhausted its potential but has slowed down considerably in its progress. In this paper we derive a simple scaling model for the cost of large accelerators and colliding beam facilities based on costs of 17 big facilities which have been either built or carefully estimated. Although this approach cannot replace an actual cost estimate based on an engineering design, this parameterization is to indicate a somewhat realistic cost range for consideration of what future frontier accelerator facilities might be fiscally realizable.

  9. Reinventing the Accelerator for the High Energy Frontier

    ScienceCinema

    Rosenzweig, James [UCLA, Los Angeles, California, United States

    2016-07-12

    The history of discovery in high-energy physics has been intimately connected with progress in methods of accelerating particles for the past 75 years. This remains true today, as the post-LHC era in particle physics will require significant innovation and investment in a superconducting linear collider. The choice of the linear collider as the next-generation discovery machine, and the selection of superconducting technology has rather suddenly thrown promising competing techniques -- such as very large hadron colliders, muon colliders, and high-field, high frequency linear colliders -- into the background. We discuss the state of such conventional options, and the likelihood of their eventual success. We then follow with a much longer view: a survey of a new, burgeoning frontier in high energy accelerators, where intense lasers, charged particle beams, and plasmas are all combined in a cross-disciplinary effort to reinvent the accelerator from its fundamental principles on up.

  10. Working with Gifted Science Students in a Public High School Environment: One School's Approach

    ERIC Educational Resources Information Center

    Ngoi, Mephie; Vondracek, Mark

    2002-01-01

    The Chemistry/Physics Program at Evanston Township High School was designed to provide an environment for the rigorous teaching of advanced science and mathematics to accelerated students. This type of student makes up the bulk of students in the Advanced Placement Chemistry and Physics classes. However, there is a small number of students who…

  11. The Importance of the Ninth Grade on High School Graduation Rates and Student Success in High School

    ERIC Educational Resources Information Center

    McCallumore, Kyle M.; Sparapani, Ervin F.

    2010-01-01

    According to the title of a Robert Fulghum book, all one really needs to know they learned in kindergarten (Fulghum, 1989). Evaluating the national high school graduation rates over the past thirty years, and noting the steady decline in these numbers, which accelerated in the 1990s (Wheelock & Miao, 2005), it would be easy to disagree with Mr.…

  12. High-Power Electron Accelerators for Space (and other) Applications

    SciTech Connect

    Nguyen, Dinh Cong; Lewellen, John W.

    2016-05-23

    This is a presentation on high-power electron accelerators for space and other applications. The main points covered are: electron beams for space applications, new designs of RF accelerators, high-power high-electron mobility transistors (HEMT) testing, and Li-ion battery design. In summary, the authors have considered a concept of 1-MeV electron accelerator that can operate up to several seconds. This concept can be extended to higher energy to produce higher beam power. Going to higher beam energy requires adding more cavities and solid-state HEMT RF power devices. The commercial HEMT have been tested for frequency response and RF output power (up to 420 W). Finally, the authors are testing these HEMT into a resonant load and planning for an electron beam test in FY17.

  13. [Junior High School Program.

    ERIC Educational Resources Information Center

    Wisconsin Univ. - Stout, Menomonie. Center for Vocational, Technical and Adult Education.

    The document contains eight student directed and two teacher directed activity packages, and a proposed curriculum guide; all pertain to field objectives 1, 2, or 3 of the Wisconsin Guide to Local Curriculum Improvement in Industrial Education, K-12. Geared to the junior high level, the student packages are entitled: Repair of a Lamp Cord and…

  14. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-12-01

    Chemistry and the Environment This issue contains more than 20 articles relating to the environment. Several articles of potential interest are indicated in the Table of Contents with the SSC mark (). Others are not so indicated because they depict use of expensive instrumentation or costly procedures, but if you have an interest in environmental chemistry you may wish to examine all the environmentally related articles. While many of the articles, both marked and unmarked, are targeted to college-level environmental chemistry curricula or to introductory courses for non-major, the methods described in several could be readily adapted to high school chemistry courses. One article likely to be of interest to teachers is found in News from Online, pp 1608-1609. The author explains how to use the U.S. Environment Protection Agency's EnviroMapper Web site to view and query environmental information. She mentioned finding a hazardous waste handler located near her home, so I decided to check the area near my home. I quickly located a natural gas salt dome storage facility marked on the map and, with a few more mouse clicks, I found information that included status of compliance with regulations, amounts of each compound released to the air in tons per year, and how to contact the corporation owning the site. Email and Web site addresses were included for the convenience of anyone wishing to contact the corporation. Students could learn a great deal about where they live that is relevant to chemistry by using the EPA site. Additional Web sites dealing with environmental issues and chemistry are cited in the sidebar at the bottom of p 1609. Among the articles that could be adapted to an advanced high school chemistry class or possibly even to an introductory class is one titled Bridge of Mandolin County (pp 1671-1672). It describes a case-study strategy similar to the scenarios used in ChemStudy. Students analyze information from various

  15. Guide to School Design: Healthy + High Performance Schools

    ERIC Educational Resources Information Center

    Healthy Schools Network, Inc., 2007

    2007-01-01

    A "healthy and high performance school" uses a holistic design process to promote the health and comfort of children and school employees, as well as conserve resources. Children may spend over eight hours a day at school with little, if any, legal protection from environmental hazards. Schools are generally not well-maintained; asthma is a…

  16. Teacher Safety and Authoritative School Climate in High Schools

    ERIC Educational Resources Information Center

    Gregory, Anne; Cornell, Dewey; Fan, Xitao

    2012-01-01

    Most research on school climate focuses on student well-being, with less attention on the safety of school faculty. The current study examined the relationship between an authoritative school climate (characterized by high levels of student support and disciplinary structure) and both teacher reports of victimization and school records of threats…

  17. Accelerated Math[R]: Pilot Schools Report. Monograph.

    ERIC Educational Resources Information Center

    School Renaissance Inst., Inc., Madison, WI.

    Accelerated Math (AM) math management software is a task level learning information system placed in 4th-11th grade classrooms around the country. AM provides teachers with an information system that assures that students can master all math objectives and state standards from grade 3 through calculus. It eliminates teacher paperwork, improves…

  18. Survey of proposed high intensity accelerators and their applications

    SciTech Connect

    Schriber, S.O.

    1994-09-01

    Many interesting applications are being considered for high intensity accelerators. Implications of the technology developments that are enhancing these opportunities, or making them possible, will be covered in context of the applications. Applications include those for research (in areas such as material science, biological sciences, nuclear and high energy physics), accelerator-driven transmutation technologies, defense, and medicine. Specific examples will be used to demonstrate the impact that technology development can have and how transfer of this technology to industry can have an impact in the consumer and commercial arenas. Technology Development in rf power, controls, beam optics, rf structures, magnets, injectors, and beam halos will be considered.

  19. Science opportunities at high power accelerators like APT

    SciTech Connect

    Browne, J.C.

    1996-12-31

    This paper presents applications of high power RF proton linear accelerators to several fields. Radioisotope production is an area in which linacs have already provided new isotopes for use in medical and industrial applications. A new type of spallation neutron source, called a long-pulse spallation source (LPSS), is discussed for application to neutron scattering and to the production and use of ultra-cold neutrons (UCN). The concept of an accelerator-driven, transmutation of nuclear waste system, based on high power RF linac technology, is presented along with its impact on spent nuclear fuels.

  20. High School Newspaper Financing: An Assessment.

    ERIC Educational Resources Information Center

    Dvorak, Jack

    Eighty schools that were members of the Iowa High School Press Association responded to a questionnaire about the school newspaper's financial status in light of public school budget cuts. The collected data indicated that nearly half of the respondent schools published newspapers at no cost and in cooperation with a community newspaper. Sixty…

  1. Resource Allocation in High Schools. Final Report.

    ERIC Educational Resources Information Center

    Hartman, William T.

    This study investigated the resource allocation process--how school administrators obtain the proper resources to operate their schools, distribute the available resources among the various school programs appropriately, and manage resources for effective educational results--in four high schools during the 1984-85 school year. Information was…

  2. Middle School Concept Helps High-Poverty Schools Become High-Performing Schools

    ERIC Educational Resources Information Center

    Picucci, Ali Callicoatte; Brownson, Amanda; Kahlert, Rahel; Sobel, Andrew

    2004-01-01

    The results of a study conducted by the Charles A. Dana Center at the University of Texas at Austin for the U.S. Department of Education during the 2001-02 school year showed that elements of the middle school concept can lead to improved student performance, even in high-poverty schools. This article describes common elements of the middle school…

  3. Regional High School Senior Survey.

    ERIC Educational Resources Information Center

    Day, Philip R., Jr.

    In order to identify the educational needs and aspirations of graduating high school seniors in the service region of the University of Maine at Augusta, a survey instrument was designed and administered to 1,950 seniors at 19 institutions. In all, 1,744 completed surveys were returned, a 92 percent response rate. The data are sub-grouped into…

  4. NOVA HIGH SCHOOL--INTRODUCTION

    ERIC Educational Resources Information Center

    COGSWELL, JOHN F.

    AN OVERVIEW WAS PRESENTED OF THE ORGANIZATION AND OPERATION OF A NUMBER OF INNOVATIVE ASPECTS OF THE NOVA HIGH SCHOOL IN FORT LAUDERDALE, FLORIDA. NOVA IS PART OF A COMPLEX PLANNED TO INCLUDE GRADES K THROUGH 12. STUDENTS MUST APPLY TO ATTEND NOVA AND ARE SELECTED PRIMARILY ON THE RELATION OF STUDENT PERFORMANCE TO MEASURES OF APTITIDE. VOCATIONAL…

  5. Team Teaching in High School

    ERIC Educational Resources Information Center

    Mandel, Kenneth; Eiserman, Terry

    2016-01-01

    Too often at the high school level, teachers work in isolation, without the ability to see other practitioners at work. Team teaching offers an effective antidote: It provides a comfortable environment in which to grow because it enables teachers to learn from another professional on a regular basis. "Teaming," notes the authors,…

  6. Computerizing a High School Library.

    ERIC Educational Resources Information Center

    Whelan, Errol A.; Chan, Jeanie

    1988-01-01

    Describes how the Swift-Current Comprehensive High School (Saskatchewan) library computerized to create an online catalog, provide access to remote databases, and acquire CD-ROM reference systems. Objectives, hardware and software selection and costs, implementation, and evaluation are discussed. Seven references are listed, and a directory of…

  7. Rethinking the High School Diploma

    ERIC Educational Resources Information Center

    Finn, Chester E., Jr.; Kahlenberg, Richard D.; Kress, Sandy

    2015-01-01

    As states move to implement the Common Core State Standards, key challenges remain. One is how to make sure a high school diploma acknowledges what students have achieved. Should states adopt a two tiered diploma, in which students who pass internationally aligned Common Core exams at a career- and college-ready level receive an…

  8. Automating a High School Restroom.

    ERIC Educational Resources Information Center

    Ritner-Heir, Robbin

    1999-01-01

    Discusses how one high school transformed its restrooms into cleaner and more vandal-resistant environments by automating them. Solutions discussed include installing perforated stainless steel panel ceilings, using epoxy-based paint for walls, selecting china commode fixtures instead of stainless steel, installing electronic faucets and sensors,…

  9. High School Health Science Program.

    ERIC Educational Resources Information Center

    Kirkwood Community Coll., Cedar Rapids, IA.

    This curriculum guide contains units of study for high school health science courses in Iowa. The first section is a competency outline for three topics: introduction to health care; nurse aide/orderly; and rehabilitation aide. For each competency, the following information is provided: objectives; suggested learning activities; resources; and…

  10. Middle/High School Projects.

    ERIC Educational Resources Information Center

    Learning By Design, 2002

    2002-01-01

    Describes the buildings of two combined middle/high schools, including the educational context and design goals. Includes information on the architects and design team, a general building description, and general construction costs and specifications. Also provides a rough site plan and photographs. (EV)

  11. Secretarial Practice for High Schools.

    ERIC Educational Resources Information Center

    New York City Board of Education, Brooklyn, NY. Bureau of Curriculum Development.

    The handbook provides teachers with a guide to a course of vocational training designed to qualify high school stenographic majors for initial employment as stenographers or potential secretaries. The subject is taught by means of practical application under supervision and is meant to serve as a culmination of secretarial training. The course…

  12. Getting Ready for High School

    ERIC Educational Resources Information Center

    Barber, Karra

    2008-01-01

    In this article, the author describes her anxiety concerning her 14-year-old son being able to sit for five consecutive hours and take the entrance exam required for him to attend a private high school, should he decide that's what he wants to do next year. What she discovered about herself through this process is never to underestimate her son…

  13. INSPIRED High School Computing Academies

    ERIC Educational Resources Information Center

    Doerschuk, Peggy; Liu, Jiangjiang; Mann, Judith

    2011-01-01

    If we are to attract more women and minorities to computing we must engage students at an early age. As part of its mission to increase participation of women and underrepresented minorities in computing, the Increasing Student Participation in Research Development Program (INSPIRED) conducts computing academies for high school students. The…

  14. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Emory Howell, J.

    1999-11-01

    many of our readers. The High School/College Interface Luncheon was part of the very rich day-long High School Program at the New Orleans ACS Meeting. Shown here (from left) are Glenn Crosby, the luncheon speaker; Lillie Tucker-Akin, the High School Day program chair; and Fred Johnson, Assistant Superintendent of Shelby County (TN) schools and Immediate Past President of NSTA. The recipient of the James Bryant Conant Award in High School Chemistry Teaching is Frank G. Cardulla, who taught for many years at Niles North High School, Skokie, Illinois. His extensive record of service to fellow teachers includes editing the JCE "View from My Classroom" feature for several years and writing several articles, as well as his recent appointment to the JCE Board of Publication. The recipient of the George C. Pimentel Award in Chemical Education is Jerry A. Bell of the American Chemical Society in Washington, DC. An author of numerous articles appearing in JCE and a member of the JCE Board of Publication for several years, he currently serves as Board Chair. The 16th Biennial Conference on Chemical Education Readers who attended the 15th BCCE in Waterloo, Ontario, know that much of the programming at these conferences is of interest to high school teachers. Many work shops, papers, and demonstrations are presented by high school teachers. There are many other outstanding papers and posters, plenary speakers, and exciting demonstrations. The 16th BCCE will be held at the University of Michigan in Ann Arbor, July 30-August 3, 2000. Among the high school teachers already scheduled to present workshops at the 16th BCCE are George Hague, Lynn Hershey, and Jack Randall, and there will be many more before the program is completed. The High School Chemistry Program Chair is Tim Graham, Roosevelt High School (MI). The Organizing Committee is seeking the assistance of local sections of the American Chemical Society

  15. Developing a Plan to Support Mathematics Students with Advanced Placement Potential at Indian River High School

    ERIC Educational Resources Information Center

    Timmons, Sara J.

    2009-01-01

    One of the many goals of schools is to have each student reach his/her fullest potential. One way schools challenge the accelerated learners is through the advanced placement (AP) program. Many able students at Indian River High School (IRHS) are choosing to enroll in college prep math courses instead of enrolling in honors and AP math. When…

  16. Crystal growth of energetic materials during high acceleration

    SciTech Connect

    Lanzerotti, M.Y.D.; Autera, J.; Borne, L.; Sharma, J.

    1996-07-01

    Studies of the growth of crystals of energetic materials under conditions of high acceleration in an ultracentrifuge are reported. When a saturated solution is accelerated in an ultracentrifuge, the solute molecules move individually through the solvent molecules to form a crystal at the outer edge of the tube if the solute is more dense than the solvent. Since there is no evaporation or temperature variation, convection currents caused by simultaneous movement of solvent and solute are minimized and crystal defects are potentially minimized. Crystal growth is controlled by the g-level of the acceleration. In addition, solution inclusions and bubbles migrate out of the saturated solution as a result of the pressure gradient induced by the g-force. The authors present results of TNT, RDX, and TNAZ grown at high g from various solutions.

  17. Application of Plasma Waveguides to High Energy Accelerators

    SciTech Connect

    Milchberg, Howard M

    2013-03-30

    The eventual success of laser-plasma based acceleration schemes for high-energy particle physics will require the focusing and stable guiding of short intense laser pulses in reproducible plasma channels. For this goal to be realized, many scientific issues need to be addressed. These issues include an understanding of the basic physics of, and an exploration of various schemes for, plasma channel formation. In addition, the coupling of intense laser pulses to these channels and the stable propagation of pulses in the channels require study. Finally, new theoretical and computational tools need to be developed to aid in the design and analysis of experiments and future accelerators. Here we propose a 3-year renewal of our combined theoretical and experimental program on the applications of plasma waveguides to high-energy accelerators. During the past grant period we have made a number of significant advances in the science of laser-plasma based acceleration. We pioneered the development of clustered gases as a new highly efficient medium for plasma channel formation. Our contributions here include theoretical and experimental studies of the physics of cluster ionization, heating, explosion, and channel formation. We have demonstrated for the first time the generation of and guiding in a corrugated plasma waveguide. The fine structure demonstrated in these guides is only possible with cluster jet heating by lasers. The corrugated guide is a slow wave structure operable at arbitrarily high laser intensities, allowing direct laser acceleration, a process we have explored in detail with simulations. The development of these guides opens the possibility of direct laser acceleration, a true miniature analogue of the SLAC RF-based accelerator. Our theoretical studies during this period have also contributed to the further development of the simulation codes, Wake and QuickPIC, which can be used for both laser driven and beam driven plasma based acceleration schemes. We

  18. National Program on High Field Accelerator Magnet R&D

    SciTech Connect

    Apollinari, G.; Cooley, L.; Zlobin, A. V.; Caspi, S.; Gourlay, S.; Prestemon, S.; Larbalestier, D.; Gupta, R.; Wanderer, P.

    2014-09-26

    A National High-Field Magnet (HFM) Program is proposed as a thrust of the updated DOE-HEP General Accelerator R&D Program. The program responds to Recommendation 24 of the 2014 Particle Physics Project Prioritization Panel (P5) Report.

  19. Bullying among Turkish High School Students

    ERIC Educational Resources Information Center

    Kepenekci, Yasemin Karaman; Cinkir, Sakir

    2006-01-01

    Objective: The purpose of this study was to investigate school bullying among public high school students in Turkey. Method: This study used a survey to examine different aspects of bullying in schools. The participants (N=692) were students chosen from five state high schools in Ankara in the 2000-2001 academic year. A self-administered…

  20. Content Delivery for a Virtual High School

    ERIC Educational Resources Information Center

    Lopez, W. Joy

    2003-01-01

    In the fall of 2002, Visions In Education, a charter school for home-schooled and independent-study children, opened Visions High School Academy (www.visions academy.org), a virtual project-based high school. The five educators who started the program--Mark Jackson, Fred Lamora, Celine Darby, Jennifer Russell and the author--identified three…

  1. Why Our High Schools Need the Arts

    ERIC Educational Resources Information Center

    Davis, Jessica Hoffmann

    2011-01-01

    In this follow-up to her bestselling book, "Why Our Schools Need the Arts", Jessica Hoffmann Davis addresses the alarming drop-out rate in our high schools and presents a thoughtful, evidence-based argument that increasing arts education in the high school curriculum will keep kids in school. Davis shares compelling voices of teachers and their…

  2. How to Identify High-Growth Schools

    ERIC Educational Resources Information Center

    Pfeiffer, Linda E.

    2015-01-01

    When researching school options, parents may want to look for schools with high-growth scores which, according to research, may be indicators of other characteristics such as programming, leadership, culture, and size. This quick guide offers parents tips on how to identify high-growth schools and what to ask when evaluating school options. An…

  3. School Characteristics Related to High School Dropout Rates

    ERIC Educational Resources Information Center

    Christle, Christine A.; Jolivette, Kristine; Nelson, C. Michael

    2007-01-01

    Dropping out of high school culminates a long-term process of disengagement from school and has profound social and economic consequences for students, their families, and their communities. Students who drop out of high school are more likely to be unemployed, to earn less than those who graduate, to be on public assistance, and to end up in…

  4. A Study of School Size among Alabama's Public High Schools

    ERIC Educational Resources Information Center

    Lindahl, Ronald A.; Cain, Patrick M., Sr.

    2012-01-01

    The purpose of this study was to examine the relationship between the size of Alabama's public high schools, selected school quality and financial indicators, and their students' performance on standardized exams. When the socioeconomic level of the student bodies is held constant, the size of high schools in Alabama has relatively little…

  5. Identifying Exemplary School Counseling Practices in Nationally Recognized High Schools

    ERIC Educational Resources Information Center

    Militello, Matthew; Carey, John; Dimmitt, Carey; Lee, Vivian; Schweid, Jason

    2009-01-01

    The National Center for School Counseling Outcome Research (CSCOR) at the University of Massachusetts-Amherst studied exemplary practices of 18 high schools that received recognition for college preparation and placement in 2004 and 2005. Through interviews with key personnel at each of the high schools, the researchers generated a set of ten…

  6. Medical Isotope Production using High Intensity Accelerator Neutrons

    NASA Astrophysics Data System (ADS)

    Nagai, Yasuki

    We proposed aprototype facility for the generation of radioisotopes with accelerator neutrons by deuterons. The neutrons are producedbynatC(d,n) with 40MeV 2 mA deuteron beams, and about 8.1 TBq/week of 99Mois produced by irradiating an enriched 100Mo sample with the neutrons.High-quality 99mTc can be separatedfrom an irradiated 100MoO3 sample by thermo-chromatographic separation.In this contribution we present the system to produce medical radioisotopes, such as 99Mo, 90Y, and 67Cu, and experimental studies on 99Mo and 67Cu produced by using accelerator neutrons.

  7. Neutron dosimetry with TL albedo dosemeters at high energy accelerators.

    PubMed

    Haninger, T; Fehrenbacher, G

    2007-01-01

    The GSF-Personal Monitoring Service uses the TLD albedo dosemeter as standard neutron personal dosemeter. Due to its low sensitivity for fast neutrons however, it is generally not recommended for workplaces at high-energy accelerators. Test measurements with the albedo dosemeter were performed at the accelerator laboratories of GSI in Darmstadt and DESY in Hamburg to reconsider this hypothesis. It revealed that the albedo dosemeter can also be used as personal dosemeter at these workplaces, because at all measurement locations a significant part of neutrons with lower energies could be found, which were produced by scattering at walls or the ground.

  8. Practical aspects of shielding high-energy particle accelerators

    SciTech Connect

    Thomas, R.H. |

    1993-09-01

    The experimental basis of shielding design for high-energy accelerators that has been established over the past thirty years is described. Particular emphasis is given to the design of large accelerators constructed underground. The first data obtained from cosmic-ray physics were supplemented by basic nuclear physics. When these data proved insufficient, experiments were carried out and interpreted by several empirical formulae -- the most successful of which has been the Moyer Model. This empirical model has been used successfully to design the shields of most synchrotrons currently in operation, and is still being used in preliminary design and to check the results of neutron transport calculations. Accurate shield designs are needed to reduce external radiation levels during accelerator operations and to minimize environmental impacts such as {open_quotes}skyshine{close_quotes} and the production of radioactivity in groundwater. Examples of the cost of minimizing such environmental impacts are given.

  9. Highly Efficient Proteolysis Accelerated by Electromagnetic Waves for Peptide Mapping

    PubMed Central

    Chen, Qiwen; Liu, Ting; Chen, Gang

    2011-01-01

    Proteomics will contribute greatly to the understanding of gene functions in the post-genomic era. In proteome research, protein digestion is a key procedure prior to mass spectrometry identification. During the past decade, a variety of electromagnetic waves have been employed to accelerate proteolysis. This review focuses on the recent advances and the key strategies of these novel proteolysis approaches for digesting and identifying proteins. The subjects covered include microwave-accelerated protein digestion, infrared-assisted proteolysis, ultraviolet-enhanced protein digestion, laser-assisted proteolysis, and future prospects. It is expected that these novel proteolysis strategies accelerated by various electromagnetic waves will become powerful tools in proteome research and will find wide applications in high throughput protein digestion and identification. PMID:22379392

  10. Cerebrolysin Accelerates Metamorphosis and Attenuates Aging-Accelerating Effect of High Temperature in Drosophila Melanogaster

    PubMed Central

    Navrotskaya, V.; Vorobyova, L.; Sharma, H.; Muresanu, D.; Summergrad, P.

    2015-01-01

    Cerebrolysin® (CBL) is a neuroprotective drug used for the treatment of neurodegenerative diseases. CBL’s mechanisms of action remain unclear. Involvement of tryptophan (TRP)–kynurenine (KYN) pathway in neuroprotective effect of CBL might be suggested considering that modulation of KYN pathway of TRP metabolism by CBL, and protection against eclosion defect and prolongation of life span of Drosophila melanogaster with pharmacologically or genetically-induced down-regulation of TRP conversion into KYN. To investigate possible involvement of TRP–KYN pathway in mechanisms of neuroprotective effect of CBL, we evaluated CBL effects on metamorphosis and life span of Drosophila melanogaster maintained at 23 °C and 28 °C ambient temperature. CBL accelerated metamorphosis, exerted strong tendency (p = 0.04) to prolong life span in female but not in male flies, and attenuated aging-accelerating effect of high (28 °C) ambient temperature in both female and male flies. Further research of CBL effects on metamorphosis and resistance to aging-accelerating effect of high temperature might offer new insights in mechanisms of its neuroprotective action and expand its clinical applications. PMID:25798213

  11. Shielding analyses for repetitive high energy pulsed power accelerators

    NASA Astrophysics Data System (ADS)

    Jow, H. N.; Rao, D. V.

    Sandia National Laboratories (SNL) designs, tests and operates a variety of accelerators that generate large amounts of high energy Bremsstrahlung radiation over an extended time. Typically, groups of similar accelerators are housed in a large building that is inaccessible to the general public. To facilitate independent operation of each accelerator, test cells are constructed around each accelerator to shield it from the radiation workers occupying surrounding test cells and work-areas. These test cells, about 9 ft. high, are constructed of high density concrete block walls that provide direct radiation shielding. Above the target areas (radiation sources), lead or steel plates are used to minimize skyshine radiation. Space, accessibility and cost considerations impose certain restrictions on the design of these test cells. SNL Health Physics division is tasked to evaluate the adequacy of each test cell design and compare resultant dose rates with the design criteria stated in DOE Order 5480.11. In response, SNL Health Physics has undertaken an intensive effort to assess existing radiation shielding codes and compare their predictions against measured dose rates. This paper provides a summary of the effort and its results.

  12. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-09-01

    Alternative Assessment The trend in several states to use high-stakes achievement test scores to evaluate districts, schools, and teachers appears to be at odds with the intent of the National Science Education Assessment Standards. Recently I read several postings on an Internet discussion list in which several high school teachers expressed differing opinions on how to deal with the situation. There seemed to be general agreement, however, that as increased emphasis is placed on preparation for high-stakes end-of-course examinations it becomes more difficult to assess conceptual understanding. High school chemistry teachers are an innovative lot, and I am confident that ways will be found to evaluate understanding no matter what. This month's issue contains two examples of using student-constructed posters as a means of assessment. Although we most often associate poster presentations with research, such as a science fair project, these articles show that posters may also be used to assess student learning in class settings. The examples are from lower-division college courses, but they may be equally useful in high school chemistry courses. An article titled Using Poster Sessions as an Alternative to Written ExaminationsThe Poster Exam by Pamela Mills and four co-authors contains a detailed explanation of how student-constructed posters can be used to assess student learning. A number of related articles are listed in the Literature Cited section. Another example is found in A Poster Session in Organic Chemistry That Markedly Enhanced Student Learning by P. A. Huddle. The same author also contributed the article How to Present a Paper or Poster in which useful, straightforward suggestions for communicating information and ideas clearly are provided.

  13. Experimental and theoretical investigation of high gradient acceleration

    SciTech Connect

    Bekefi, G.; Chen, C.; Chen, S.; Danly, B.; Temkin, R.J.; Wurtele, J.S.

    1992-02-01

    This report contains a technical progress summary of the research conducted under the auspices of DOE Grant No. DE-FG0291ER-40648. Experimental and Theoretical Investigations of High Gradient Acceleration.'' This grant supports three research tasks: Task A consists of the design and fabrication of a 17GHz of photocathode gun, Task B supports the testing of high gradient acceleration using a 33GHz structure, and Task C comprises theoretical investigations, both in support of the experimental tasks and on critical physics issues for the development of high energy linear colliders. This report is organized as follows. The development of an rf gun design and research progress on the picosecond laser system is summarized in Sec. 2, the status of the studies of the LBL/Haimson high gradient structure, using a 50 MW free-electron laser is summarized in Sec. 3, and theoretical research progress is described in Sec. 4. Supporting material is contained in Appendices A-G.

  14. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-08-01

    Care to Share? An Informal Syllabus Exchange A recent email message from Thomas Shiland, who teaches at Saratoga Springs Senior High School, noted that the process of revising the high school chemistry syllabus is underway in New York State. He expressed a strong interest in helping construct a chemistry syllabus that represents the best thinking about appropriate content. He wondered if it would be possible to develop a way in which different secondary chemistry syllabi could easily be exchanged. It is likely that readers from other states and countries are involved in a similar process and might also be interested in exchanging syllabi. Many states do not use the term syllabus to describe their guiding curricular document for chemistry but rather refer to it as a framework or as guidelines. In most cases, the document includes a list of key ideas or topics, performance indicators, and the major understandings associated with each key idea. Such documents would be appropriate for exchange among those of you involved in the revision process. If you are interested in arranging an exchange please contact me by email at j.e.howell@usm.edu or by mail at J. E. Howell, Box 5043, USM, Hattiesburg, MS39406-5043, USA. High School Day Information The High School Chemistry Program at the American Chemical Society National Meeting in New Orleans, Louisiana will be held Sunday, August 22, 1999, at the Doubletree Hotel, 300 Canal Street. If you wish to register only for the High School Day activities, which includes a pass to the ACS Exposition, a special registration form is available from Lillie Tucker-Akin, 2800 Reynard Dr., Tupelo, MS38801; sci4me@aol.com; fax: 662/566-7906. Advance registration is 25 and the cost of the High School Luncheon is 12. Register in advance by August 1, 1999, or from 7:45 to 8:30 a.m. at the High School Day table in the conference room area of the Doubletree. The workshop schedule is shown below. Secondary School Feature Articles * Exploring the

  15. Electron Acceleration by High Power Radio Waves in the Ionosphere

    NASA Astrophysics Data System (ADS)

    Bernhardt, Paul

    2012-10-01

    At the highest ERP of the High Altitude Auroral Research Program (HAARP) facility in Alaska, high frequency (HF) electromagnetic (EM) waves in the ionosphere produce artificial aurora and electron-ion plasma layers. Using HAARP, electrons are accelerated by high power electrostatic (ES) waves to energies >100 times the thermal temperature of the ambient plasma. These ES waves are driven by decay of the pump EM wave tuned to plasma resonances. The most efficient acceleration process occurs near the harmonics of the electron cyclotron frequency in earth's magnetic field. Mode conversion plays a role in transforming the ES waves into EM signals that are recorded with ground receivers. These diagnostic waves, called stimulated EM emissions (SEE), show unique resonant signatures of the strongest electron acceleration. This SEE also provides clues about the ES waves responsible for electron acceleration. The electron gas is accelerated by high frequency modes including Langmuir (electron plasma), upper hybrid, and electron Bernstein waves. All of these waves have been identified in the scattered EM spectra as downshifted sidebands of the EM pump frequency. Parametric decay is responsible low frequency companion modes such as ion acoustic, lower hybrid, and ion Bernstein waves. The temporal evolution of the scattered EM spectrum indicates development of field aligned irregularities that aid the mode conversion process. The onset of certain spectral features is strongly correlated with glow plasma discharge structures that are both visible with the unaided eye and detectable using radio backscatter techniques at HF and UHF frequencies. The primary goals are to understand natural plasma layers, to study basic plasma physics in a unique ``laboratory with walls,'' and to create artificial plasma structures that can aid radio communications.

  16. Dielectric-Lined High-Gradient Accelerator Structure

    SciTech Connect

    Jay L. Hirshfield

    2012-04-24

    Rectangular particle accelerator structures with internal planar dielectric elements have been studied, with a view towards devising structures with lower surface fields for a given accelerating field, as compared with structures without dielectrics. Success with this concept is expected to allow operation at higher accelerating gradients than otherwise on account of reduced breakdown probabilities. The project involves studies of RF breakdown on amorphous dielectrics in test cavities that could enable high-gradient structures to be built for a future multi-TeV collider. The aim is to determine what the limits are for RF fields at the surfaces of selected dielectrics, and the resulting acceleration gradient that could be achieved in a working structure. The dielectric of principal interest in this study is artificial CVD diamond, on account of its advertised high breakdown field ({approx}2 GV/m for dc), low loss tangent, and high thermal conductivity. Experimental studies at mm-wavelengths on materials and structures for achieving high acceleration gradient were based on the availability of the 34.3 GHz third-harmonic magnicon amplifier developed by Omega-P, and installed at the Yale University Beam Physics Laboratory. Peak power from the magnicon was measured to be about 20 MW in 0.5 {micro}s pulses, with a gain of 54 dB. Experiments for studying RF high-field effects on CVD diamond samples failed to show any evidence after more than 10{sup 5} RF pulses of RF breakdown up to a tangential surface field strength of 153 MV/m; studies at higher fields were not possible due to a degradation in magnicon performance. A rebuild of the tube is underway at this writing. Computed performance for a dielectric-loaded rectangular accelerator structure (DLA) shows highly competitive properties, as compared with an existing all-metal structure. For example, comparisons were made of a DLA structure having two planar CVD diamond elements with a all-metal CERN structure HDS

  17. Kerr black holes as particle accelerators to arbitrarily high energy.

    PubMed

    Bañados, Máximo; Silk, Joseph; West, Stephen M

    2009-09-11

    We show that intermediate mass black holes conjectured to be the early precursors of supermassive black holes and surrounded by relic cold dark matter density spikes can act as particle accelerators with collisions, in principle, at arbitrarily high center-of-mass energies in the case of Kerr black holes. While the ejecta from such interactions will be highly redshifted, we may anticipate the possibility of a unique probe of Planck-scale physics.

  18. Photonic Band Gap resonators for high energy accelerators

    SciTech Connect

    Schultz, S.; Smith, D.R.; Kroll, N. |

    1993-12-31

    We have proposed that a new type of microwave resonator, based on Photonic Band Gap (PBG) structures, may be particularly useful for high energy accelerators. We provide an explanation of the PBG concept and present data which illustrate some of the special properties associated with such structures. Further evaluation of the utility of PBG resonators requires laboratory testing of model structures at cryogenic temperatures, and at high fields. We provide a brief discussion of our test program, which is currently in progress.

  19. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-06-01

    Secondary School Feature Article * JCE Classroom Activity #18: Photochemistry and Pinhole Photography: An Interdisciplinary Experiment, by Angeliki A. Rigos and Kevin Salemme, p 736A High School Program at Anaheim ACS Meeting Congratulations to Barbara Sitzman of Chatsworth High School (Los Angeles) and her committee for organizing an outstanding day of activities! With support from the Southern California Section of the American Chemical Society and the encouragement of Tom Wildeman, CHED Program Committee Chair, the program attracted a large number of Southern California teachers and some from much greater distances. A synopsis of some of the day's activities is included in the Chemical Education Program Meeting Report, p 747. Other workshop topics included gel chromatography, forensic chemistry, art preservation and authentication, well water purification, and toxins in waste water. Also, a workshop on fitting polymers into the chemistry course was conducted by the Polymer Ambassadors. I thank Mickey Sarquis, founding editor of the JCE Secondary School Chemistry Section, for joining me in conducting an information workshop. The pictures appearing on this page were taken at the High School/College Interface Luncheon, which featured an address by Paul Boyer. In addition to the opportunity to visit with colleagues, enjoy a meal together, and win door prizes, those in attendance enjoyed a lively hands-on workshop led by Michael Tinnesand, Department Head of K-12 Science, ACS Education Division. Don't you wish you could have attended the High School Program? Plan Now: High School Program in New Orleans Mark your calendar for Sunday, August 22, 1999. The Fall ACS National Meeting will be held in New Orleans and the High School Program is scheduled on Sunday so that teachers will be able to avoid conflicts with the opening of the school year. Teachers in the Mid-South region are especially encouraged

  20. Sexting by High School Students.

    PubMed

    Strassberg, Donald S; Cann, Deanna; Velarde, Valerie

    2017-01-03

    In the last 8 years, several studies have documented that many adolescents acknowledge having exchanged sexually explicit cell phone pictures of themselves, a behavior termed sexting. Differences across studies in how sexting was defined, recruitment strategies, and cohort have resulted in sometimes significant differences in as basic a metric as what percentage of adolescents have sent, received, or forwarded such sexts. The psychosocial and even legal risks associated with sexting by minors are significantly serious that accurate estimates of its prevalence, including over time, are important to ascertain. In the present study, students (N = 656) from a single private high school were surveyed regarding their participation in sexting. Students at this same school were similarly surveyed four years earlier. In this second survey, reported rates of sending (males 15.8%; females 13.6%) and receiving (males 40.5%; females 30.6%) sexually explicit cell phone pictures (revealing genitals or buttocks of either sex or female breasts) were generally similar to those reported at the same school 4 years earlier. Rates of forwarding sexts (males 12.2%; females 7.6%) were much lower than those previously acknowledged at this school. Correlates of sexting in this study were similar to those reported previously. Overall, our findings suggest that sexting by adolescents (with the exception of forwarding) remains a fairly common behavior, despite its risks.

  1. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-07-01

    Secondary School Feature Articles * Super Science Connections, by Patricia B. McKean, p 916 * A pHorseshoe, by Roger Plumsky, p 935 National Conferences in Your Part of the Country For the past several months, considerable space in this column has been devoted to forthcoming national conferences and conventions and to highlights of conferences past. For some of us, location is fairly unimportant; but for most of us travel costs and time are both factors to consider when choosing a conference. The community of high school chemistry teachers is favored by the number of national conventions and conferences that are held each year in different locations. In 1999, for example, the spring National Meeting of the American Chemical Society was in Anaheim and the National Science Teachers Association National Convention was in Boston. This summer CHEMED '99 will be held in Fairfield, CT, August 1-5, and the fall National ACS Meeting will be in New Orleans. Teachers from the mid-South especially should consider attending the High School Program at New Orleans, described below by Lillie Tucker Akin, Chairperson of the Division's High School Program Committee. The event will be held on Sunday to minimize conflicts with the beginning of the school year. JCE at CHEMED '99 Stop by the JCE booth at CHEMED '99 in the exhibits area to learn more about the wide array of print and nonprint resources you can use in your classroom and laboratory. Members of the editorial staff will be on hand to talk with you. You are invited to participate in a workshop, "Promoting Active Learning through JCE Activity Sheets and Software", on Monday, August 1, 8:30-10:30. The free hands-on workshop is number WT11 and we encourage you to include it among your choices in the blanks provided on the third page of the registration form. We will also conduct an interactive session to listen to ideas for making the Journal more useful to you. Check the final program for location and time or inquire at the JCE

  2. High energy electron beam processing experiments with induction accelerators

    NASA Astrophysics Data System (ADS)

    Goodman, D. L.; Birx, D. L.; Dave, V. R.

    1995-05-01

    Induction accelerators are capable of producing very high electron beam power for processing at energies of 1-10 MeV. A high energy electron beam (HEEB) material processing system based on all-solid-state induction accelerator technology is in operation at Science Research Laboratory. The system delivers 50 ns 500 A current pulses at 1.5 MeV and is capable of operating at high power (500 kW) and high (˜ 5 kHz) repetition rate. HEEB processing with induction accelerators is useful for a wide variety of applications including the joining of high temperature materials, powder metallurgical fabrication, treatment of organic-contaminated wastewater and the curing of polymer matrix composites. High temperature HEEB experiments at SRL have demonstrated the brazing of carbon-carbon composites to metallic substrates and the melting and sintering of powders for graded-alloy fabrication. Other experiments have demonstrated efficient destruction of low-concentration organic contaminants in water and low temperature free-radical cross-linking of fiber-reinforced composites with acrylated resin matrices.

  3. Mathematics and science acceleration in grade eight: School leaders' perceptions and satisfaction

    NASA Astrophysics Data System (ADS)

    Graham, Kenneth

    Shifts in attitudes regarding academic program accessibility to provide the most rigorous academic opportunities to all students will not occur smoothly without departmental level leaders who believe in the potential benefits of accelerating larger numbers of students. Without the support and the belief of the department level leadership, practices such as open enrollment and universal acceleration that target school equity will be doomed to failure. This study was conducted using a questionnaire developed by the researcher called the Perceptions of Acceleration and Leadership Survey. The survey was distributed to all math and science department leaders within a suburban region of New York. The survey sought to determine how the perceptions of acceleration, job satisfaction, self-efficacy, and role longevity for the department level leaders are impacted by their personal demographics, professional characteristics, and community characteristics. The study did not reveal any statistically significant differences among department level leaders' personal, professional, and community characteristics with respect to perceptions of acceleration. There were significant differences for job satisfaction, self-efficacy, and role longevity for several intervening and independent variables within the study. Statistically significant correlations were found between beliefs in college preparation and perceptions of acceleration as well as relationships with the community and perceptions of acceleration. The results indicate the importance of hiring department leaders who recognize the potential for accelerating more students, hiring more ethnically diverse candidates for these leadership positions, affording department level leaders with significant professional development, and evaluation of administrative structures to maximize student success.

  4. Modeling electron cloud dynamics in high-frequency accelerators

    NASA Astrophysics Data System (ADS)

    Veitzer, Seth A.; Stoltz, Peter H.

    2017-03-01

    The dynamics of electron cloud buildup, saturation, and dissipation represent a complex interaction between accelerator and beam parameters. In many accelerators bunch charges are large and beam frequencies are small. In this case electrons have a good probability of being accelerated to the opposite side of the beam pipe before the next bunch crossing. If the time for electrons to drift across the beam pipe is less than the time to the next bunch crossing the cloud density can build up rapidly under this scenario. However, in accelerators where buch charges are small and beam frequencies are large, electrons created by secondary electron emission will not be accelerated to the opposite wall before the next bunch crossing. In this case the time for a cloud to build up is larger, but the amount of electron cloud that exists close to the beam may be increased. In this paper, we report simulation results for modeling of electron cloud buildup and dynamics in high-frequency accelerators. We model parameters relevant to the JLab Electron-Ion Collider (JLEIC) that is currently being designed. We consider beam frequencies up to 476 MHz for a variety of different ions, from protons up to Pb (82+), and with bunch charges ranging from 4.2 × 109 (p) to 0.05 × 109 (Pb) ions per bunch, and ion energies from 100 (p) - 40 (Pb) GeV/u. We compare simulations of electron cloud buildup and dynamics for these different cases, and contrast with similar simulations of proton-driven electron cloud buildup in the Fermilab recycler under the PIP-II upgrade scenario, with a frequency of 52.8 MHz, bunch charge of 80 × 109 p/bunch, and energies ranging from 8 - 20 GeV.

  5. Rectangular Dielectric-loaded Structures for Achieving High Acceleration Gradients

    NASA Astrophysics Data System (ADS)

    Wang, Changbiao; Yakovlev, V. P.; Marshall, T. C.; LaPointe, M. A.; Hirshfield, J. L.

    2006-11-01

    Rectangular dielectric-loaded structures are described that may sustain higher acceleration gradients than conventional all-metal structures with similar apertures. One structure is a test cavity designed to ascertain the breakdown limits of dielectrics, while a second structure could be the basis for a two-beam accelerator. CVD diamond is an attractive dielectric for a high-gradient structure, since the published DC breakdown limit for CVD diamond is ˜ 2 GV/m, although the limit has never been determined for RF fields. Here we present a design of a diamond-lined test cavity to measure the breakdown limit. The designed cavity operates at 34 GHz, where with 10-MW input power it is expected to produce an ˜800 MV/m field on the diamond surface—provided breakdown is avoided. The two channel rectangular dielectric-loaded waveguide could be a two-beam accelerator structure, in which a drive beam is in one channel and an accelerated beam is in the other. The RF power produced by drive bunches in the drive channel is continuously coupled to the acceleration channel. The ratio of fields in the channels (transformer ratio) for the operating mode can be designed by adjusting the dimensions of the structure. An example of the two-channel structure is described, in which a train of five 3-nC drive bunches excites wake fields in the accelerator channel of up to 1.3 GV/m with a transformer ratio of 10 for the design mode.

  6. Using Geometer's Sketchpad to Enhance Non-Accelerated Middle School Students' Understanding of Negative Numbers and Equality

    ERIC Educational Resources Information Center

    Juersivich, Nicole Renee

    2009-01-01

    The purposes of this study were to (1) investigate non-accelerated middle schools students' understanding of pre-algebraic concepts, in particular, addition and subtraction of integers and the notion of equality; (2) describe and analyze how non-accelerated middle school students interact with The Geometer's Sketchpad (GSP) applets depicting…

  7. Accelerated Program in Elementary-School Mathematics--The Fourth Year.

    ERIC Educational Resources Information Center

    Suppes, Patrick; Ihrke, Constance

    Reported is the description of the fourth year (1966-67) of a longitudinal study of the accelerated program involving 30 bright students in elementary school mathematics. This report was written to be as homogeneous as possible with earlier reports by Suppes and Hansen (1965), Suppes (1966), and Suppes and Ihrke (1967). Tables and figures in this…

  8. Evaluation of the Accelerated Reader Program in Chesapeake, VA, Public Schools

    ERIC Educational Resources Information Center

    Chase, Elaine; Goodin, Penny; Nichols, W. Randolph

    2010-01-01

    The Accelerated Reader program from Renaissance Learning Inc. is a popular program implemented in elementary and middle schools across the country that encourages students to read and monitors their progress in the program. Despite its widespread use and popularity, there have been some questions about the program's effectiveness at increasing…

  9. Accelerated Reader as a Literacy Catch-Up Intervention during Primary to Secondary School Transition Phase

    ERIC Educational Resources Information Center

    Siddiqui, Nadia; Gorard, Stephen; See, Beng Huat

    2016-01-01

    This paper describes an evaluation of an internet-based reading programme called Accelerated Reader (AR), which is widely used in UK schools and worldwide. AR is a whole-group reading management and monitoring programme that aims to stimulate the habit of independent reading among primary and secondary age pupils. The evaluation involved 349…

  10. Perceptions of Tennessee School Principals about the Tennessee Educator Acceleration Model (Team)

    ERIC Educational Resources Information Center

    Bryant, Carmen Belcher

    2013-01-01

    The purpose of this quantitative study was to analyze the perceptions of Tennessee principals about the implementation of the Tennessee Educator Acceleration Model (TEAM) and the impact of TEAM on teachers' instructional practice and professional growth. Participants in this study were PK-12 public school principals from 12 districts in the First…

  11. High School Teachers Win ACS Prizes

    NASA Astrophysics Data System (ADS)

    Editorial Staff, Jce

    2009-07-01

    William E. Snyder is the 2009 winner of the ACS Division of Chemical Education Central Region Award for Excellence in High School Teaching; Sally Mitchell is the winner of the 2009 James Bryant Conant Award in High School Chemistry Teaching.

  12. Indoor Air Quality in High Performance Schools

    EPA Pesticide Factsheets

    High performance schools are facilities that improve the learning environment while saving energy, resources, and money. The key is understanding the lifetime value of high performance schools and effectively managing priorities, time, and budget.

  13. High efficiency beam splitting for H/sup -/ accelerators

    SciTech Connect

    Kramer, S.L.; Stipp, V.; Krieger, C.; Madsen, J.

    1985-01-01

    Beam splitting for high energy accelerators has typically involved a significant loss of beam and radiation. This paper reports on a new method of splitting beams for H/sup -/ accelerators. This technique uses a high intensity flash of light to strip a fraction of the H/sup -/ beam to H/sup 0/ which are then easily separated by a small bending magnet. A system using a 900-watt (average electrical power) flashlamp and a highly efficient collector will provide 10/sup -3/ to 10/sup -2/ splitting of a 50 MeV H/sup -/ beam. Results on the operation and comparisons with stripping cross sections are presented. Also discussed is the possibility for developing this system to yield a higher stripping fraction.

  14. Research and Development for Ultra-High Gradient Accelerator Structures

    NASA Astrophysics Data System (ADS)

    Tantawi, Sami G.; Dolgashev, Valery; Higashi, Yasuo; Spataro, Bruno

    2010-11-01

    Research on the basic physics of high-gradient, high frequency accelerator structures and the associated RF/microwave technology are essential for the future of discovery science, medicine and biology, energy and environment, and national security. We will review the state-of-the-art for the development of high gradient linear accelerators. We will present the research activities aimed at exploring the basic physics phenomenon of RF breakdown. We present the experimental results of a true systematic study in which the surface processing, geometry, and materials of the structures have been varied, one parameter at a time. The breakdown rate or alternatively, the probability of breakdown/pulse/meter has been recorded for different operating parameters. These statistical data reveal a strong dependence of breakdown probability on surface magnetic field, or alternatively on surface pulsed heating. This is in contrast to the classical view of electric field dependence.

  15. State Department Report: Wilde Lake High School.

    ERIC Educational Resources Information Center

    Wilde Lake High School, Columbia, MD.

    The report describes general education courses offered at Wilde Lake High School--a school that maintains a flexible environment conducive to learning and hopefully fosters individual development and growth. The aim of the school is to create an environment that helps students: adjust and cope with their environment outside the school; develop…

  16. Eastern Michigan University's First Consociate School: Farmington High School.

    ERIC Educational Resources Information Center

    Gorenflo, Barbara A.; And Others

    This paper reports on a collaboration between Eastern Michigan University (EMU) College of Education and Farmington High School (FHS), EMU's first consociate school, i.e., a school site that has developed an exceptionally strong working relationship with a college of education. Leaders of both institutions identified a number of creative ways they…

  17. Investigating High School Teachers' Perceptions of School Environment.

    ERIC Educational Resources Information Center

    Huang, Shwu-yong L.

    This study examined public high school teachers' perceptions of school environment, focusing on satisfaction, collegiality, teacher-student relationships, discipline, principal leadership, equity, and teacher influence. It also investigated differences in attitudes by gender. Participating teachers from 8 schools in the Southern United States…

  18. A University Based Alternative School for High School Dropouts.

    ERIC Educational Resources Information Center

    Franklin, Cynthia; And Others

    This study evaluated the effectiveness of an educational and treatment program for high school dropouts initiated by a private alternative school contracting with a graduate school of social work. The Cassata Program, a joint effort by the Cassata Learning Center and the University of Texas at Arlington, was designed to improve students' academic…

  19. Rural Public School Dropouts: Data from High School and Beyond.

    ERIC Educational Resources Information Center

    McCaul, Edward

    This paper focuses on data concerning the characteristics, attitudes, and school experiences of rural dropouts. The discussion, which draws largely upon the High School and Beyond database, considers two primary concerns. The first deals with differences between rural dropouts and their rural counterparts who stayed in school. Areas of inquiry…

  20. Adolescents Transitioning to High School.

    PubMed

    Williams, Susan G; Langhinrichsen-Rohling, Jennifer; Wornell, Cory; Finnegan, Heather

    2017-01-01

    Adolescents transitioning to high school may be at greater risk of depression and suicide if they are victims of bullying behavior. This study explored sex differences in bullying victimization (physical, verbal/social, and cyberbullying) and the impact on depressive symptoms and suicidal behaviors in ninth-grade students ( N = 233). Females reported significantly more verbal/social and cyberbullying than male students. There were no significant sex differences in physical bullying; male students who reported physical bullying victimization were more likely to experience depressive symptoms. Verbal/social bullying predicted depressive symptoms in males and females. Females who reported being victims of cyberbullying were more likely to report depressive symptoms, suicide ideation, and suicide attempts. Eighteen students reported suicide attempts, and each also experienced verbal/social bullying. School nurses are positioned to reach out to transitioning students, screen for mental health issues, provide a safe place to talk about bullying experiences, and promote positive mental health.

  1. Western North Dakota High School Senior Profiles.

    ERIC Educational Resources Information Center

    Bickel, David; Markell, Clark

    The objectives of this study were (1) to assess the attitudes of high school seniors in North Dakota toward isolationism and toward lignite coal development, and (2) to determine the future occupational and educational plans of high school seniors in the sampled area. A survey instrument was sent early in 1974 to all high school seniors in a…

  2. High School Economic Composition and College Persistence.

    PubMed

    Niu, Sunny X; Tienda, Marta

    2013-02-01

    Using a longitudinal sample of Texas high school seniors of 2002 who enrolled in college within the calendar year of high school graduation, we examine variation in college persistence according to the economic composition of their high schools, which serves as a proxy for unmeasured high school attributes that are conductive to postsecondary success. Students who graduated from affluent high schools have the highest persistence rates and those who attended poor high schools have the lowest rates. Multivariate analyses indicate that the advantages in persistence and on-time graduation from four-year colleges enjoyed by graduates of affluent high schools cannot be fully explained by high school college orientation and academic rigor, family background, pre-college academic preparedness or the institutional characteristics. High school college orientation, family background and pre-college academic preparation largely explain why graduates from affluent high schools who first enroll in two-year colleges have higher transfer rates to four-year institutions; however these factors and college characteristics do not explain the lower transfer rates for students from poor high schools. The conclusion discusses the implications of the empirical findings in light of several recent studies that call attention to the policy importance of high schools as a lever to improve persistence and completion rates via better institutional matches.

  3. High School Economic Composition and College Persistence

    PubMed Central

    Tienda, Marta

    2013-01-01

    Using a longitudinal sample of Texas high school seniors of 2002 who enrolled in college within the calendar year of high school graduation, we examine variation in college persistence according to the economic composition of their high schools, which serves as a proxy for unmeasured high school attributes that are conductive to postsecondary success. Students who graduated from affluent high schools have the highest persistence rates and those who attended poor high schools have the lowest rates. Multivariate analyses indicate that the advantages in persistence and on-time graduation from four-year colleges enjoyed by graduates of affluent high schools cannot be fully explained by high school college orientation and academic rigor, family background, pre-college academic preparedness or the institutional characteristics. High school college orientation, family background and pre-college academic preparation largely explain why graduates from affluent high schools who first enroll in two-year colleges have higher transfer rates to four-year institutions; however these factors and college characteristics do not explain the lower transfer rates for students from poor high schools. The conclusion discusses the implications of the empirical findings in light of several recent studies that call attention to the policy importance of high schools as a lever to improve persistence and completion rates via better institutional matches. PMID:23459198

  4. REMOTE HIGH SCHOOLS--THE REALITIES.

    ERIC Educational Resources Information Center

    FORD, PAUL; AND OTHERS

    THIS STUDY WAS CONDUCTED AT TWO URBAN HIGH SCHOOLS AND THREE SMALL, REMOTE HIGH SCHOOLS IN THE STATE OF WASHINGTON IN AN EFFORT TO INVESTIGATE STUDENT-TEACHER ACTIVITIES AND RELATIONSHIPS, AND TO EXPLORE, IN DEPTH, ANY EDUCATIONAL ADVANTAGES AND/OR DISADVANTAGES ACCRUING TO THE SMALL HIGH SCHOOL. GENERAL FINDINGS OF THE STUDY INDICATED THAT THERE…

  5. Online High School at Stanford University

    ERIC Educational Resources Information Center

    Ravaglia, Raymond

    2007-01-01

    The Education Program for Gifted Youth (EPGY) Online High School (OHS) is a three-year, diploma granting, online independent high school for gifted students. The mission statement reads as follows: "Through advanced technology, rigorous courses, and the resources of Stanford University, the Online High School affords gifted students everywhere an…

  6. Crazy-Proofing High School Sports

    ERIC Educational Resources Information Center

    Tufte, John E.

    2012-01-01

    "Crazy-Proofing High School Sports" examines the often troubling high school sports phenomenon in two parts. Part one focuses on the problems facing educators, students, and parents as they struggle to make high school sports worthwhile. Few if any strategies for improvement in education are effective without first knowing what the real reasons…

  7. Trenton High School: Attitude Builds Community

    ERIC Educational Resources Information Center

    Principal Leadership, 2013

    2013-01-01

    High schools often are the anchor of their communities. Nowhere is this more so than in rural north-central Missouri where Trenton High School is the community. Over the last 10 years, this 400-student comprehensive high school mirrored the community's economic downturn and experienced a significant increase in students living in poverty--to the…

  8. High spatial resolution measurements in a single stage ram accelerator

    NASA Technical Reports Server (NTRS)

    Hinkey, J. B.; Burnham, E. A.; Bruckner, A. P.

    1992-01-01

    High spatial resolution experimental tube wall pressure measurements of ram accelerator gas dynamic phenomena are presented in this paper. The ram accelerator is a ramjet-in-tube device which operates in a manner similar to that of a conventional ramjet. The projectile resembles the centerbody of a ramjet and travels supersonically through a tube filled with a combustible gaseous mixture, with the tube acting as the outer cowling. Pressure data are recorded as the projectile passes by sensors mounted in the tube wall at various locations along the tube. Utilization of special highly instrumented sections of tube has allowed the recording of gas dynamic phenomena with high resolution. High spatial resolution tube wall pressure data from the three regimes of propulsion studied to date (subdetonative, transdetonative, and superdetonative) in a single stage gas mixture are presented and reveal the three-dimensional character of the flow field induced by projectile fins and the canting of the fins and the canting of the projectile body relative to the tube wall. Also presented for comparison to the experimental data are calculations made with an inviscid, three-dimensional CFD code. The knowledge gained from these experiments and simulations is useful in understanding the underlying nature of ram accelerator propulsive regimes, as well as assisting in the validation of three-dimensional CFD coded which model unsteady, chemically reactive flows.

  9. Electron acceleration and high harmonic generation by relativistic surface plasmons

    NASA Astrophysics Data System (ADS)

    Cantono, Giada; Luca Fedeli Team; Andrea Sgattoni Team; Andrea Macchi Team; Tiberio Ceccotti Team

    2016-10-01

    Intense, short laser pulses with ultra-high contrast allow resonant surface plasmons (SPs) excitation on solid wavelength-scale grating targets, opening the way to the extension of Plasmonics in the relativistic regime and the manipulation of intense electromagnetic fields to develop new short, energetic, laser-synchronized radiation sources. Recent theoretical and experimental studies have explored the role of SP excitation in increasing the laser-target coupling and enhancing ion acceleration, high-order harmonic generation and surface electron acceleration. Here we present our results on SP driven electron acceleration from grating targets at ultra-high laser intensities (I = 5 ×1019 W/cm2, τ = 25 fs). When the resonant condition for SP excitation is fulfilled, electrons are emitted in a narrow cone along the target surface, with a total charge of about 100 pC and energy spectra peaked around 5 MeV. Distinguishing features of the resonant process were investigated by varying the incidence angle, grating type and with the support of 3D PIC simulations, which closely reproduced the experimental data. Open challenges and further measurements on high-order harmonic generation in presence of a relativistic SP will also be discussed.

  10. High Performance Computing Modeling Advances Accelerator Science for High-Energy Physics

    SciTech Connect

    Amundson, James; Macridin, Alexandru; Spentzouris, Panagiotis

    2014-07-28

    The development and optimization of particle accelerators are essential for advancing our understanding of the properties of matter, energy, space, and time. Particle accelerators are complex devices whose behavior involves many physical effects on multiple scales. Therefore, advanced computational tools utilizing high-performance computing are essential for accurately modeling them. In the past decade, the US Department of Energy's SciDAC program has produced accelerator-modeling tools that have been employed to tackle some of the most difficult accelerator science problems. The authors discuss the Synergia framework and its applications to high-intensity particle accelerator physics. Synergia is an accelerator simulation package capable of handling the entire spectrum of beam dynamics simulations. Our authors present Synergia's design principles and its performance on HPC platforms.

  11. High Performance Computing Modeling Advances Accelerator Science for High-Energy Physics

    DOE PAGES

    Amundson, James; Macridin, Alexandru; Spentzouris, Panagiotis

    2014-07-28

    The development and optimization of particle accelerators are essential for advancing our understanding of the properties of matter, energy, space, and time. Particle accelerators are complex devices whose behavior involves many physical effects on multiple scales. Therefore, advanced computational tools utilizing high-performance computing are essential for accurately modeling them. In the past decade, the US Department of Energy's SciDAC program has produced accelerator-modeling tools that have been employed to tackle some of the most difficult accelerator science problems. The authors discuss the Synergia framework and its applications to high-intensity particle accelerator physics. Synergia is an accelerator simulation package capable ofmore » handling the entire spectrum of beam dynamics simulations. Our authors present Synergia's design principles and its performance on HPC platforms.« less

  12. Teacher Practices in a High Performing, Appalachian Rural High School

    ERIC Educational Resources Information Center

    Estep, Steven A.

    2009-01-01

    The purpose of this exploratory case study was to identify, investigate, and describe factors that contributed to the academic success of Phelps High School, a rural, isolated, Appalachian high school in Pike County Kentucky. The academic index of the school in 2000 was 48% and in a six year period the academic index of the school improved to 94%.…

  13. Superconductor Requirements and Characterization for High Field Accelerator Magnets

    SciTech Connect

    Barzi, E.; Zlobin, A. V.

    2015-05-01

    The 2014 Particle Physics Project Prioritization Panel (P5) strategic plan for U.S. High Energy Physics (HEP) endorses a continued world leadership role in superconducting magnet technology for future Energy Frontier Programs. This includes 10 to 15 T Nb3Sn accelerator magnets for LHC upgrades and a future 100 TeV scale pp collider, and as ultimate goal that of developing magnet technologies above 20 T based on both High Temperature Superconductors (HTS) and Low Temperature Superconductors (LTS) for accelerator magnets. To achieve these objectives, a sound conductor development and characterization program is needed and is herein described. This program is intended to be conducted in close collaboration with U.S. and International labs, Universities and Industry.

  14. Case Study: William Charles Akins High School. High Schools That Work

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2011

    2011-01-01

    Akins High School is the newest and second largest high school in the Austin Independent School District in Austin, Texas. This report describes how the school has used small learning communities and the "HSTW" framework of Key Practices to improve the school culture, personalize the learning environment, improve student achievement and…

  15. Cheating in Middle School and High School

    ERIC Educational Resources Information Center

    Strom, Paris S.; Strom, Robert D.

    2007-01-01

    There is increasing concern about cheating in the secondary schools. This article describes the prevalence of dishonesty in testing, motivation for student cheating, new forms of deception using technology tools, initiatives to protect security of tests, methods students use to obtain papers without crediting the original source, tools for…

  16. Conditioning of high gradient H sup - accelerating cavities

    SciTech Connect

    Kroc, T.; Moretti, A.

    1991-02-01

    Three prototype cavities for the side-coupled accelerating structure of Fermilab's Linac Upgrade have been powered. The cavities operate at a nominal maximum surface electric field of 37--42 MV/m and have been run at close to 60 MV/m at 805 MHz. This paper will present the experience accumulated on x-ray production and RF breakdown frequency. We will try to compare our data with others' experiences with high surface electric fields. 5 refs., 3 figs.

  17. Ion Bombardment of Microprotrusions in High Gradient Accelerating Structures

    SciTech Connect

    Nusinovich, Gregory S.; Kashyn, Dmytro; Antonsen, Thomas Jr.; Haber, Irving

    2010-11-04

    This paper starts from a brief overview of theoretical studies of high-gradient accelerating structures at the University of Maryland. The rest of the paper is devoted to the analysis of ion bombardment of small protrusions in such structures. First, this problem is studied analytically. Then, some results of particle-in-cell simulations performed with the use of code WARP are presented and discussed.

  18. Summary report of working group 3: Laser and high-gradient structure-based acceleration

    NASA Astrophysics Data System (ADS)

    Andonian, Gerard; Simakov, Evgenya

    2017-03-01

    High-gradient particle acceleration with reduced power demands is essential for miniaturization and cost reduction of future accelerators. Applications for compact accelerators span collider research for High Energy Physics, light source development for Basic Energy Sciences and National Security, and industrial accelerators for Energy and Environmental Applications. Working Group 3 discussed and surveyed the recent advances in achieving higher gradients and better acceleration efficiency in externally powered, structure-based accelerators. The topics covered in Working Group 3 included dielectric laser acceleration, millimeter-wave accelerators, breakdown phenomena, exotic topologies such as photonic band-gap structures, artificial materials, and nanostructures, and novel rf technology.

  19. Regular Soda Policies, School Availability, and High School Student Consumption

    PubMed Central

    Terry-McElrath, Yvonne M.; Chriqui, Jamie F.; O’Malley, Patrick M.; Chaloupka, Frank J.; Johnston, Lloyd D.

    2014-01-01

    Background Beginning in the 2014–2015 school year, all U.S. schools participating in federally reimbursable meal programs are required to implement new nutrition standards for items sold in competitive venues. Multilevel mediation modeling examining direct, mediated, and indirect pathways between policy, availability, and student consumption might provide insight into possible outcomes of implementing aspects of the new standards. Purpose To employ multilevel mediation modeling using state- and school district–level policies mandating school soda bans, school soda availability, and student soda consumption. Methods The 2010–2012 Monitoring the Future surveys obtained nationally representative data on high school student soda consumption; school administrators provided school soda availability data. State laws and district policies were compiled and coded. Analyses conducted in 2014 controlled for state-, school-, and student-level characteristics. Results State–district–school models found that state bans were associated with significantly lower school soda availability (c, p<0.05) but district bans showed no significant associations. No significant direct, mediated, or indirect associations between state policy and student consumption were observed for the overall sample. Among African American high school students, state policy was associated directly with significantly lower school soda availability (a, p<0.01), and—indirectly through lower school availability—with significantly lower soda consumption (a*b, p<0.05). Conclusions These analyses indicate state policy focused on regular soda strongly affected school soda availability, and worked through changes in school availability to decrease soda consumption among African American students, but not the overall population. PMID:25576493

  20. High School Physics Teaching Experience

    NASA Astrophysics Data System (ADS)

    2012-04-01

    We divided our high school physics teaching experience into three groups: first year teaching physics, second or third year teaching physics, and four or more years of experience teaching physics. We did this because everything is new for teachers teaching a course for the first time. The second and third time through the course, teachers learn from past experiences and hone their approaches. By the time a teacher is in the fourth year of teaching a course, he or she is more comfortable with the material and better able to understand the ways in which different approaches work with different topics.

  1. Improving Advanced High School Physics

    NASA Astrophysics Data System (ADS)

    Spital, Robin David

    2003-04-01

    A National Research Council study committee recently commissioned a "Physics Panel" to evaluate and make recommendations for improving advanced physics education in American high schools [1]. The Physics Panel recommends the creation of a nationally standardized Newtonian Mechanics Unit that would form the foundation of all advanced physics programs. In a one-year program, the Panel recommends that advanced physics students study at most one other major area of physics, so that sufficient time is available to develop the deep conceptual understanding that is the primary goal of advanced study. The Panel emphasizes that final assessments must be improved to focus on depth of understanding, rather than technical problem-solving skill. The Physics Panel strongly endorses the inclusion of meaningful real-world experiences in advanced physics programs, but believes that traditional "cook-book" laboratory exercises are not worth the enormous amount of time and effort spent on them. The Physics Panel believes that the talent and preparation of teachers are the most important ingredients in effective physics instruction; it therefore calls for a concerted effort by all parts of the physics community to remedy the desperate shortage of highly qualified teachers. [1] Jerry P. Gollub and Robin Spital, "Advanced Physics in the High Schools", Physics Today, May 2002.

  2. A high current, short pulse electron source for wakefield accelerators

    SciTech Connect

    Ho, Ching-Hung.

    1992-01-01

    Design studies for the generation of a high current, short pulse electron source for the Argonne Wakefield Accelerator are presented. An L-band laser photocathode rf gun cavity is designed using the computer code URMEL to maximize the electric field on the cathode surface for fixed frequency and rf input power. A new technique using a curved incoming laser wavefront to minimize the space charge effect near the photocathode is studied. A preaccelerator with large iris to minimize wakefield effects is used to boost the drive beam to a useful energy of around 20 MeV for wakefield acceleration experiments. Focusing in the photocathode gun and the preaccelerator is accomplished with solenoids. Beam dynamics simulations throughout the preaccelerator are performed using particle simulation codes TBCI-SF and PARMELA. An example providing a useful set of operation parameters for the Argonne Wakefield Accelerator is given. The effects of the sagitta of the curved beam and laser amplitude and timing jitter effects are discussed. Measurement results of low rf power level bench tests and a high power test for the gun cavity are presented and discussed.

  3. High average power lasers for future particle accelerators

    NASA Astrophysics Data System (ADS)

    Dawson, Jay W.; Crane, John K.; Messerly, Michael J.; Prantil, Matthew A.; Pax, Paul H.; Sridharan, Arun K.; Allen, Graham S.; Drachenberg, Derrek R.; Phan, Henry H.; Heebner, John E.; Ebbers, Christopher A.; Beach, Raymond J.; Hartouni, Edward P.; Siders, Craig W.; Spinka, Thomas M.; Barty, C. P. J.; Bayramian, Andrew J.; Haefner, Leon C.; Albert, Felicie; Lowdermilk, W. Howard; Rubenchik, Alexander M.; Bonanno, Regina E.

    2012-12-01

    Lasers are of increasing interest to the accelerator community and include applications as diverse as stripping electrons from hydrogen atoms, sources for Compton scattering, efficient high repetition rate lasers for dielectric laser acceleration, peta-watt peak power lasers for laser wake field and high energy, short pulse lasers for proton and ion beam therapy. The laser requirements for these applications are briefly surveyed. State of the art of laser technologies with the potential to eventually meet those requirements are reviewed. These technologies include diode pumped solid state lasers (including cryogenic), fiber lasers, OPCPA based lasers and Ti:Sapphire lasers. Strengths and weakness of the various technologies are discussed along with the most important issues to address to get from the current state of the art to the performance needed for the accelerator applications. Efficiency issues are considered in detail as in most cases the system efficiency is a valuable indicator of the actual ability of a given technology to deliver the application requirements.

  4. A high current, short pulse electron source for wakefield accelerators

    SciTech Connect

    Ho, Ching-Hung

    1992-12-31

    Design studies for the generation of a high current, short pulse electron source for the Argonne Wakefield Accelerator are presented. An L-band laser photocathode rf gun cavity is designed using the computer code URMEL to maximize the electric field on the cathode surface for fixed frequency and rf input power. A new technique using a curved incoming laser wavefront to minimize the space charge effect near the photocathode is studied. A preaccelerator with large iris to minimize wakefield effects is used to boost the drive beam to a useful energy of around 20 MeV for wakefield acceleration experiments. Focusing in the photocathode gun and the preaccelerator is accomplished with solenoids. Beam dynamics simulations throughout the preaccelerator are performed using particle simulation codes TBCI-SF and PARMELA. An example providing a useful set of operation parameters for the Argonne Wakefield Accelerator is given. The effects of the sagitta of the curved beam and laser amplitude and timing jitter effects are discussed. Measurement results of low rf power level bench tests and a high power test for the gun cavity are presented and discussed.

  5. Consumer Education in Lincoln High School.

    ERIC Educational Resources Information Center

    Consumers Union of United States, Inc., Mount Vernon, NY. Educational Services Div.

    "Consumer Education in Lincoln High School" was prepared by the Consumer Education Committee, faculty members of the school. The document presents a series of teacher-prepared case studies of Lincoln High School's consumer education program and how consumer education has been integrated into the following departments: business education,…

  6. Community Partnerships to Support High School Success

    ERIC Educational Resources Information Center

    Harvard Family Research Project, 2011

    2011-01-01

    Graduation and dropout rates are the center of the conversation about high school reform, with President Obama and the U.S. Department of Education leading the charge to boost high school and college graduation rates among our nation's students in the next ten years. Recognizing the need for a comprehensive approach to keeping teens in school and…

  7. High Five: Building Capacity for School Excellence

    ERIC Educational Resources Information Center

    McCullen, Caroline

    2006-01-01

    In 2004, five North Carolina school districts combined forces with five corporate foundations to leverage their collective wisdom and develop regional strategies for school improvement. The result was the High Five Regional Partnership for High School Excellence, a corporate-public sector effort that had the common goal of improving graduation…

  8. Loris High School: The Sky's the Limit

    ERIC Educational Resources Information Center

    Rourke, James; Hartzman, Marlene

    2009-01-01

    In 2005, Loris (SC) High School was ranked near the bottom of all high schools in South Carolina. The newly appointed principal, Trevor Strawderman, had been the school's assistant principal. He knew that literacy presented the biggest challenge at Loris: 74% of the students in 9th and 10th grade were reading below grade level. Because of the low…

  9. High School Flexibility Enhancement: A Literature Review

    ERIC Educational Resources Information Center

    Alberta Education, 2009

    2009-01-01

    This literature review is intended to help inform the development and implementation of innovative, educationally sound high school redesigns in Alberta. It is provided as a support resource for school administrators involved in Alberta Education's High School Flexibility Enhancement Project. Support is provided in the following ways: (1) a brief…

  10. Bloomfield High School: Diversity Spurs Growth

    ERIC Educational Resources Information Center

    Principal Leadership, 2012

    2012-01-01

    Changing the culture of a large, diverse high school from a place of teaching to a place of learning requires determination and the commitment of the entire school staff. Documented academic growth for all students and reduced achievement gaps over the last five years have demonstrated that Bloomfield (New Jersey) High School has made this…

  11. Teacher Accountability at High Performing Charter Schools

    ERIC Educational Resources Information Center

    Aguirre, Moises G.

    2016-01-01

    This study will examine the teacher accountability and evaluation policies and practices at three high performing charter schools located in San Diego County, California. Charter schools are exempted from many laws, rules, and regulations that apply to traditional school systems. By examining the teacher accountability systems at high performing…

  12. Research: Why Wait till High School?

    ERIC Educational Resources Information Center

    Landreau, Janice

    2011-01-01

    Schools often wait until students are in high school before they require them to do research reports, but even 1st graders can benefit from learning to conduct research and write reports. Such projects are motivational for the students and give them a head start over students who wait till high school to learn these skills.

  13. The Case for Coherent High Schools

    ERIC Educational Resources Information Center

    Hill, Paul T.; Maas, Tricia

    2015-01-01

    High school redesign is one of the most elusive reform challenges to date. This paper explains why personalized high schools are hard to get and keep in a traditional school district, and shows how they can be made much more broadly available through changes in policy and philanthropic investments. Drawing from examples of successful and…

  14. High School Students and "Read Across America"?

    ERIC Educational Resources Information Center

    Fisher, Julieta Dias; Hill, Ann

    2004-01-01

    Although more commonly associated with elementary school rather than high school students, "Read Across America" celebrations can cater to any age group and generate enthusiasm for reading long after the festivities have ended. In this article, the authors, library media specialists at Washington Township High School in Sewell, New Jersey, share …

  15. High performance/low cost accelerator control system

    NASA Astrophysics Data System (ADS)

    Magyary, S.; Glatz, J.; Lancaster, H.; Selph, F.; Fahmie, M.; Ritchie, A.; Timossi, C.; Hinkson, C.; Benjegerdes, R.

    1980-10-01

    Implementation of a high performance computer control system tailored to the requirements of the Super HILAC accelerator is described. This system uses a distributed structure with fiber optic data links; multiple CPUs operate in parallel at each node. A large number of the latest 16 bit microcomputer boards are used to get a significant processor bandwidth. Dynamically assigned and labeled knobs together with touch screens allow a flexible and efficient operator interface. An X-Y vector graphics system allows display and labeling of real time signals as well as general plotting functions. Both the accelerator parameters and the graphics system can be driven from BASIC interactive programs in addition to the precanned user routines.

  16. High-intensity laser-induced electron acceleration in vacuum.

    PubMed

    Wang, J X; Ho, Y K; Feng, L; Kong, Q; Wang, P X; Yuan, Z S; Scheid, W

    1999-12-01

    In this paper, an approximate pulsed-laser-beam solution of Maxwell's equation in vacuum is derived. Then with the numerical simulation method, electron acceleration induced by high-intensity [Q(0)=eE(0)/(m(e)omega c)=3] lasers is discussed in connection with the recent experiment of Malka et al. It is found that the maximum energy gain and the relationship between the final energy and the scattering angle can be well reproduced, but the polarization effect of electron-laser interactions is not very prominent. These results show that the ponderomotive potential model is still applicable, which means that the stimulated Compton scattering is the main fundamental mechanism responsible for the electron acceleration at this laser intensity.

  17. Design of High Gradient Accelerating Structure for CLIC

    NASA Astrophysics Data System (ADS)

    Grudiev, A.; Wuensch, W.

    2006-01-01

    A new CLIC main-linac accelerating-structure design, HDS (Hybrid Damped Structure), with improved high-gradient performance, efficiency and simplicity of fabrication is presented. The gains are achieved in part through a new cell design which includes fully-profiled rf surfaces optimized to minimize surface fields, and hybrid damping using both iris slots and radial waveguides. The slotted irises allow a simple structure fabrication in quadrants with no rf currents across joints, a reduced number of pieces per structure (only 4) and a reduced surface requiring precise machining. Further gains are achieved through a new structure optimization procedure, which simultaneously balances surface fields, power flow, short and long-range transverse wakefields and rf-to-beam efficiency. The optimization of a 30 GHz structure with a loaded accelerating gradient of 150 MV/m results in a bunch spacing of eight rf cycles and 31 % rf-to-beam efficiency.

  18. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-02-01

    Secondary School Feature Articles JCE Classroom Activity: #24. The Write Stuff: Using Paper Chromatography to Separate an Ink Mixture, p 176A Teaching Chemistry in the Midwinter Every year, forecasters around the world provide us with long-range predictions of what the seasons will afford us in the coming year. And each year, the weather provides a few surprises that the forecasters did not predict - such as a record amount of snow or record heat indexes, depending on where you live. Although the weatherman didn't predict it, we still must pull out our snow shovels or sun block and take the necessary steps to adapt to the situation. As teachers, we make predictions of teaching and learning goals that we aspire to achieve during a given year, and like the weather, the year brings surprises that aren't in line with our predictions. With that in mind, I would like to offer JCE as the scholastic snow shovel or sun shield you need to jump-start your class and reach the goals you have set. So find a warm (or cool) place, get comfortable, and spend some time with the February issue of JCE. Articles of General Interest in This Issue For readers living where snow falls, Williams's article on page 148 offers some historical background on the use of calcium chloride as a deicer. A diver that depends for its buoyancy upon gas given off by a chemical reaction is described by Derr, Lewis, and Derr in the article beginning on page 171. In her article appearing on pages 249-250, Wang describes a laboratory exercise that makes the mastery of solution preparation skills fun. The students' skill is tested by using the solutions they make to carry out the Briggs-Rauscher oscillating reaction. For high school class applications I recommend use of 3% hydrogen peroxide, described as an option in the article. A well-organized approach to separating an ink mixture, with some possibly new twists, is laid out in the student- and teacher-friendly format of JCE Classroom Activity: #24, pages

  19. Engineering in High School: Implementing TMMW & TPE.

    ERIC Educational Resources Information Center

    Bordoloi, Kiron C.; Cole, Joseph D.

    1979-01-01

    The success of two engineering and technology-oriented secondary school programs is discussed. Also presented is the Man Made World and the Technology-People-Environment at two suburban high schools. (BB)

  20. Discovering Watson's Crick in High School Chemistry.

    ERIC Educational Resources Information Center

    Whitman, Mark

    1984-01-01

    High school chemistry students begin the school year by reading and studying "The Double Helix" by James B. Watson. Rationale, objectives, and instructional strategies for this assignment are discussed. Sample discussion questions based on the book are included. (JN)

  1. Using Evidence to Create Next Generation High Schools

    ERIC Educational Resources Information Center

    Office of Planning, Evaluation and Policy Development, US Department of Education, 2016

    2016-01-01

    Next Generation High Schools are schools that redesign the high school experience to make it more engaging and worthwhile for high school students. In order to create such Next Generation High Schools, schools, districts, and States should utilize evidence-based strategies to transform high schools in ways that engage students and help prepare…

  2. Setting the Stage for New High Schools: Municipal Leadership in Supporting High School Alternatives

    ERIC Educational Resources Information Center

    Hill, Talmira L.

    2007-01-01

    Mayors and other municipal leaders in cities across the nation are helping expand alternatives for students who struggle in traditional high school settings. Alternatives for high school are new alternative secondary school initiatives that prepare young people to graduate from high school and achieve college and career success through programs…

  3. Student Engagement, School Climate, and Future Expectations in High School.

    ERIC Educational Resources Information Center

    Hudley, Cynthia; Daoud, Annette; Polanco, Ted; Wright-Castro, Rosina; Hershberg, Rachel

    Engagement is a potentially useful construct for organizing strategies to support adjustment, achievement and retention in school, particularly among our most vulnerable student populations. Even if high quality schooling is available, high levels of achievement will implicitly demand engagement on the part of students. This initial analysis,…

  4. Schools or Students? Identifying High School Effects on Student Suspensions

    ERIC Educational Resources Information Center

    Baker-Smith, E. Christine

    2015-01-01

    Evidence is clear that discipline in high school is associated with negative outcomes across the life course. Not only are suspensions related to declining academic trajectories during high school in the form of attendance and academic achievement, students suspended once are also more likely to be suspended again and also substantially increase…

  5. Three Buildings: Two Junior High Schools and an Elementary School

    ERIC Educational Resources Information Center

    American School and University, 1973

    1973-01-01

    Describes Thomas Jefferson Junior High School/Community Center, Arlington, Virginia, the first major effort at creating a facility aimed at the total development of the community's intellectual and physical needs. Discusses Stanwood Junior High, the first systems-built school building erected in Pennsylvania; and the Dalhart, Texas, Elementary…

  6. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-06-01

    It Was Nice to See You It was great to meet and talk to so many high school chemistry teachers who attended the High School Program at the ACS National Meeting in San Francisco or attended the NSTA National Convention in Orlando. Thank you to every teacher who visited the JCE Booth at either meeting and to the approximately 100 individuals who attended the JCE workshop early Monday morning at the ACS. At the NSTA meeting, the Mole Day Breakfast was a special occasion that was made very enjoyable by National Mole Day Foundation leaders Art Logan and Maury Oehler and the enthusiasm and camaraderie of the audience. For more about NMDF activities check out the website http://gamstcweb.gisd.k12.mi.us/~nmdf. Bringing Quality Visualization into the Classroom Turn to page 799 of this issue to learn about the release of Chemistry Comes Alive! Volume 4. The Chemistry Comes Alive! series of CD-ROMs are packed with Quicktime movies and still photos depicting chemical reactions, many of which are too hazardous or expensive to carry out in the classroom or laboratory. Many of the demonstrations are accompanied by background information, and they are also correlated with popular chemistry textbooks. An innovation appearing in Volume 4 is an interactive section on reactions in aqueous solution. Among the appealing features of the CCA! series is the ability to incorporate QuickTime movies of these demonstrations into your own presentations. The Reprise of Chemical Principles Revisited I am very pleased that Cary Kilner has agreed to edit the Chemical Principles Revisited feature. Please read his Mission Statement below. If you have an idea for a manuscript that fits this feature, now is the time to take action either by discussing it with Cary or by submitting a manuscript for review. This feature has the potential to be very useful to teachers, but it can reach its potential only through your suggestions and submissions. Let us hear from you soon. Scenes from High School Day at

  7. Mechanical Behavior of TNAZ/CAB Explosives during High Acceleration

    NASA Astrophysics Data System (ADS)

    Lanzerotti, Y.; Capellos, C.; Travers, B.; Sharma, J.

    2004-07-01

    The mechanical behavior of melt-cast TNAZ/CAB (1,3,3-trinitroazetidine/cellulose acetate butyrate) explosives subjected to high acceleration has been studied in an ultracentrifuge at -10°C and 25°C. Melt-cast TNAZ/CAB was studied as a function of the percentage of the composition of CAB at -10°C and 25°C. The percentage of CAB in the samples varied from 0.5% to 3%. Failure occurs when the shear or tensile strength of the explosive is exceeded. The fracture acceleration of melt-cast TNAZ/CAB increases with the percentage of CAB in the explosive at both temperatures studied, -10°C and 25°C. While there is some variation among samples, it is found that the fracture acceleration of melt-cast 99%/1% TNAZ/CAB and melt-cast 99.5%/0.5% TNAZ/CAB at -10°C is less than that at 25°C.

  8. Single event effects in high-energy accelerators

    NASA Astrophysics Data System (ADS)

    García Alía, Rubén; Brugger, Markus; Danzeca, Salvatore; Cerutti, Francesco; de Carvalho Saraiva, Joao Pedro; Denz, Reiner; Ferrari, Alfredo; Foro, Lionel L.; Peronnard, Paul; Røed, Ketil; Secondo, Raffaello; Steckert, Jens; Thurel, Yves; Toccafondo, Iacocpo; Uznanski, Slawosz

    2017-03-01

    The radiation environment encountered at high-energy hadron accelerators strongly differs from the environment relevant for space applications. The mixed-field expected at modern accelerators is composed of charged and neutral hadrons (protons, pions, kaons and neutrons), photons, electrons, positrons and muons, ranging from very low (thermal) energies up to the TeV range. This complex field, which is extensively simulated by Monte Carlo codes (e.g. FLUKA) is due to beam losses in the experimental areas, distributed along the machine (e.g. collimation points) and deriving from the interaction with the residual gas inside the beam pipe. The resulting intensity, energy distribution and proportion of the different particles largely depends on the distance and angle with respect to the interaction point as well as the amount of installed shielding material. Electronics operating in the vicinity of the accelerator will therefore be subject to both cumulative damage from radiation (total ionizing dose, displacement damage) as well as single event effects which can seriously compromise the operation of the machine. This, combined with the extensive use of commercial-off-the-shelf components due to budget, performance and availability reasons, results in the need to carefully characterize the response of the devices and systems to representative radiation conditions.

  9. Accelerated Creep Testing of High Strength Aramid Webbing

    NASA Technical Reports Server (NTRS)

    Jones, Thomas C.; Doggett, William R.; Stnfield, Clarence E.; Valverde, Omar

    2012-01-01

    A series of preliminary accelerated creep tests were performed on four variants of 12K and 24K lbf rated Vectran webbing to help develop an accelerated creep test methodology and analysis capability for high strength aramid webbings. The variants included pristine, aged, folded and stitched samples. This class of webbings is used in the restraint layer of habitable, inflatable space structures, for which the lifetime properties are currently not well characterized. The Stepped Isothermal Method was used to accelerate the creep life of the webbings and a novel stereo photogrammetry system was used to measure the full-field strains. A custom MATLAB code is described, and used to reduce the strain data to produce master creep curves for the test samples. Initial results show good correlation between replicates; however, it is clear that a larger number of samples are needed to build confidence in the consistency of the results. It is noted that local fiber breaks affect the creep response in a similar manner to increasing the load, thus raising the creep rate and reducing the time to creep failure. The stitched webbings produced the highest variance between replicates, due to the combination of higher local stresses and thread-on-fiber damage. Large variability in the strength of the webbings is also shown to have an impact on the range of predicted creep life.

  10. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-01-01

    Ideas and Resources in This Issue This issue contains a broad spectrum of topics of potential interest to high school teachers, including chemical safety, history, demonstrations, laboratory activities, electrochemistry, small group learning, and instructional software. In his report on articles published recently in The Science Teacher, Steve Long includes annotated references from that journal, and also from JCE, that provide timely and practical information (pp 21-22). The chemical significance of several anniversaries that will occur in the year 2000 are discussed in an article by Paul Schatz (pp 11-14). Scientists and inventors mentioned include Dumas, Wöhler, Goodyear, Joliot-Curie, Krebs, Pauli, Kjeldahl, and Haworth. Several discoveries are also discussed, including development of the voltaic pile, the use of chlorine to purify water, and the discovery of element 97, berkelium. This is the fourth consecutive year that Schatz has written an anniversaries article (1-3). Although most readers probably do not plan to be teaching in the years 2097-3000, these articles can make a nice addition to your file of readily available historical information for use now in meeting NSES Content Standard G (4). In contrast to the short historical summaries, an in-depth account of the work of Herman Boerhaave is provided by Trinity School (NY) teacher Damon Diemente. You cannot recall having heard of Boerhaave? Diemente explains in detail how Boerhaave's scientific observations, imperfect though they were, contributed significantly to the understanding of temperature and heat by scientists who followed him. Chemical demonstrations attract the interest of most of us, and Kathy Thorsen discusses several that appeared in Chem 13 News during the past year (pp 18-20). Included are demonstrations relating to LeChâtelier's principle, electronegativity, and the synthesis and reactions of carbon monoxide. Ideas for investigating the hydrophobic nature of Magic Sand are given in JCE

  11. Switching Schools: Reconsidering the Relationship Between School Mobility and High School Dropout

    PubMed Central

    Gasper, Joseph; DeLuca, Stefanie; Estacion, Angela

    2014-01-01

    Youth who switch schools are more likely to demonstrate a wide array of negative behavioral and educational outcomes, including dropping out of high school. However, whether switching schools actually puts youth at risk for dropout is uncertain, since youth who switch schools are similar to dropouts in their levels of prior school achievement and engagement, which suggests that switching schools may be part of the same long-term developmental process of disengagement that leads to dropping out. Using data from the National Longitudinal Survey of Youth 1997, this study uses propensity score matching to pair youth who switched high schools with similar youth who stayed in the same school. We find that while over half the association between switching schools and dropout is explained by observed characteristics prior to 9th grade, switching schools is still associated with dropout. Moreover, the relationship between switching schools and dropout varies depending on a youth's propensity for switching schools. PMID:25554706

  12. Switching Schools: Reconsidering the Relationship Between School Mobility and High School Dropout.

    PubMed

    Gasper, Joseph; DeLuca, Stefanie; Estacion, Angela

    2012-06-01

    Youth who switch schools are more likely to demonstrate a wide array of negative behavioral and educational outcomes, including dropping out of high school. However, whether switching schools actually puts youth at risk for dropout is uncertain, since youth who switch schools are similar to dropouts in their levels of prior school achievement and engagement, which suggests that switching schools may be part of the same long-term developmental process of disengagement that leads to dropping out. Using data from the National Longitudinal Survey of Youth 1997, this study uses propensity score matching to pair youth who switched high schools with similar youth who stayed in the same school. We find that while over half the association between switching schools and dropout is explained by observed characteristics prior to 9(th) grade, switching schools is still associated with dropout. Moreover, the relationship between switching schools and dropout varies depending on a youth's propensity for switching schools.

  13. Advanced Klystrons for High Efficiency Accelerator Systems - Final Report

    SciTech Connect

    Read, Michael; Ives, Robert Lawrence

    2014-03-26

    This program explored tailoring of RF pulses used to drive accelerator cavities. Simulations indicated that properly shaping the pulse risetime to match accelerator cavity characteristics reduced reflected power and increased total efficiency. Tailoring the pulse requires a high power, gridded, klystron to shape the risetime while also controlling the beam current. The Phase I program generated a preliminary design of a gridded electron gun for a klystron producing 5-10 MW of RF power. This required design of a segmented cathode using Controlled Porosity Reservoir cathodes to limit power deposition on the grid. The program was successful in computationally designing a gun producing a high quality electron beam with grid control. Additional analysis of pulse tailoring indicated that technique would only be useful for cavity drive pulses that were less than approximately 2-3 times the risetime. Otherwise, the efficiency gained during the risetime of the pulse became insignificant when considering the efficiency over the entire pulse. Consequently, it was determined that a Phase II program would not provide sufficient return to justify the cost. Never the less, other applications for a high power gridded gun are currently being pursued. This klystron, for example, would facilitate development inverse Comptom x-ray sources by providing a high repetition rate (10 -100 kHz) RF source.

  14. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-02-01

    Secondary School Feature Articles * Building the Interest of High School Students for Science-A PACT Ambassador Program To Investigate Soap Manufacturing and Industrial Chemistry, by Matthew Lynch, Nicholas Geary, Karen Hagaman, Ann Munson, and Mark Sabo, p 191. * Promoting Chemistry at the Elementary Level, by Larry L. Louters and Richard D. Huisman, p 196. * Is It Real Gold? by Harold H. Harris, p 198. * The "Big Dog-Puppy Dog" Analogy for Resonance, by Todd P. Silverstein, p 206. * The Fizz Keeper, a Case Study in Chemical Education, Equilibrium, and Kinetics, by Reed A. Howald, p 208. Staying on Top: Curricular Projects, Relativistic Effects, and Standard-State Pressure You may wonder why some articles are identified with the Secondary School Chemistry logo (*) this month even though at first glance they appear to be of greater interest to college faculty.1 The three articles discussed below are representative of three broad categories: (i) the interrelatedness of science teaching and learning, K-16+; (ii) new understandings of chemical phenomena; and (iii) information about the use of SI units. For each article I have highlighted the major point(s) and the reasons it may be of interest to high school teachers. First, the article "The NSF 'Systemic' Projects- A New Tradition" (G. M. Barrow, p 158) is a commentary on changes in post-secondary introductory chemistry courses in which a distinction is drawn between information management and individual understanding. The author is of the opinion that most students expect the former and that the NSF-funded systemic projects "will thrive only if they are consistent with their information-management mission". Three individuals provided responses to the commentary from their perspective. Has a student asked you why mercury is a liquid, or why gold is the most electronegative metal? "Gold Chemistry: The Aurophilic Attraction" by J. Bardají and A. Laguna (p 201) and "Why Gold and Copper Are Colored but Silver Is Not" by

  15. Operational Radiation Protection in High-Energy Physics Accelerators

    SciTech Connect

    Rokni, S.H.; Fasso, A.; Liu, J.C.; /SLAC

    2012-04-03

    An overview of operational radiation protection (RP) policies and practices at high-energy electron and proton accelerators used for physics research is presented. The different radiation fields and hazards typical of these facilities are described, as well as access control and radiation control systems. The implementation of an operational RP programme is illustrated, covering area and personnel classification and monitoring, radiation surveys, radiological environmental protection, management of induced radioactivity, radiological work planning and control, management of radioactive materials and wastes, facility dismantling and decommissioning, instrumentation and training.

  16. Behavior of Plastic Bonded Composite Explosives During High Acceleration

    NASA Astrophysics Data System (ADS)

    Lanzerotti, Y.

    1998-03-01

    The mechanical behavior of plastic bonded composite explosives has been studied during high acceleration in an ultracentrifuge. The pressed explosives studied include LX-14 [95% HMX (cyclotetramethylene- tetranitramine), 5% Estane], Composition A3 type II [91% RDX (cyclotrimethylene-trinitramine), 99% BDNPF (bis-dinitropropyl acetal formal), 6% CAB (cellulose acetate butyrate)], and PAX-3 (85% HMX, 9% BDNPF, 6% CAB/25% Aluminum). The fracture strength of LX-14 is greater than all pressed explosives studied to date. The fracture strength of Composition A3 type II is smaller than all pressed explosives studied to date.

  17. High power solid state rf amplifier for proton accelerator.

    PubMed

    Jain, Akhilesh; Sharma, Deepak Kumar; Gupta, Alok Kumar; Hannurkar, P R

    2008-01-01

    A 1.5 kW solid state rf amplifier at 352 MHz has been developed and tested at RRCAT. This rf source for cw operation will be used as a part of rf system of 100 MeV proton linear accelerator. A rf power of 1.5 kW has been achieved by combining output power from eight 220 W rf amplifier modules. Amplifier modules, eight-way power combiner and divider, and directional coupler were designed indigenously for this development. High efficiency, ease of fabrication, and low cost are the main features of this design.

  18. Ion accelerator systems for high power 30 cm thruster operation

    NASA Technical Reports Server (NTRS)

    Aston, G.

    1982-01-01

    Two and three-grid accelerator systems for high power ion thruster operation were investigated. Two-grid translation tests show that over compensation of the 30 cm thruster SHAG grid set spacing the 30 cm thruster radial plasma density variation and by incorporating grid compensation only sufficient to maintain grid hole axial alignment, it is shown that beam current gains as large as 50% can be realized. Three-grid translation tests performed with a simulated 30 cm thruster discharge chamber show that substantial beamlet steering can be reliably affected by decelerator grid translation only, at net-to-total voltage ratios as low as 0.05.

  19. High-performance insulator structures for accelerator applications

    SciTech Connect

    Sampayan, S.E.; Caporaso, G.J.; Sanders, D.M.; Stoddard, R.D.; Trimble, D.O.; Elizondo, J.; Krogh, M.L.; Wieskamp, T.F.

    1997-05-01

    A new, high gradient insulator technology has been developed for accelerator systems. The concept involves the use of alternating layers of conductors and insulators with periods of order 1 mm or less. These structures perform many times better (about 1.5 to 4 times higher breakdown electric field) than conventional insulators in long pulse, short pulse, and alternating polarity applications. We describe our ongoing studies investigating the degradation of the breakdown electric field resulting from alternate fabrication techniques, the effect of gas pressure, the effect of the insulator-to-electrode interface gap spacing, and the performance of the insulator structure under bi-polar stress.

  20. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-10-01

    Writing Across the Curriculum The notion that student learning is enhanced through writing is widely accepted at all educational levels if the product is fairly assessed and the learner is provided with feedback. Finding the time to critically evaluate student papers is difficult at best and competes with time needed to prepare laboratory investigations. A few weeks ago a teacher who has extensive extracurricular responsibilities that include extensive interaction with parents and community members shared with me his frustration in not being able to grade written reports. This teacher is the head football coach at his school, but many readers experience the same difficulties due to a variety of duties. There are no easy or completely satisfying answers to this problem, but this issue contains an account of a successful approach (Writing in Chemistry: An Effective Learning Tool, pp 1399-1403). Although they are based on experience in college courses, several ideas described in the article could be applied in high school chemistry courses. In another article, the author of Precise Writing for a Precise Science (pp 1407-1408) identifies 20 examples of familiar, but incorrect, grammatical constructions and explains how to phrase each one correctly. Chemical Education Research: Improving Chemistry Learning The results from research on how students learn have greatly increased our understanding of cognition in recent years. However, the results are often published in the science education research literature and are not readily accessible to the classroom teacher. Additionally, the research reports are couched in specialized terminology. This issue contains a Viewpoints article (pp 1353-1361) that bridges the gap between research results and classroom application. It was written by two veteran chemical educators, Dudley Herron and Susan Nurrenbern. The shift from behaviorism to constructivism as the dominant theory of learning is described briefly to provide a context

  1. When and Why Dropouts Leave High School

    ERIC Educational Resources Information Center

    Stearns, Elizabeth; Glennie, Elizabeth J.

    2006-01-01

    Teens may leave school because of academic failure, disciplinary problems, or employment opportunities. In this article, the authors test whether the reasons dropouts leave school differ by grade level and age. We compare dropout rates and reasons across grade levels and ages for all high school students, ethnic groups, and gender groups. Across…

  2. Guidelines for High School Physics Programs

    ERIC Educational Resources Information Center

    American Association of Physics Teachers (NJ1), 2002

    2002-01-01

    The American Association of Physics Teachers (AAPT) developed this document as a resource for high school administrators, parents, and teachers who are interested in developing guidelines for physics curriculum and instruction in their school(s). These guidelines reflect the goals of the AAPT, with an emphasis on instructional strategies and…

  3. DuSable High School Program Flourishes.

    ERIC Educational Resources Information Center

    Graff, Pat

    1995-01-01

    Describes the fall and rise of the Panther Press, the scholastic newspaper of the DuSable High School in Chicago. States that despite being located in the midst of public housing projects, the school's newspaper is thriving where others in similar circumstances have failed. Describes how the school's principal and an advisor revitalized and…

  4. High Gradient Accelerator Cavities Using Atomic Layer Deposition

    SciTech Connect

    Ives, Robert Lawrence; Parsons, Gregory; Williams, Philip; Oldham, Christopher; Mundy, Zach; Dolgashev, Valery

    2014-12-09

    In the Phase I program, Calabazas Creek Research, Inc. (CCR), in collaboration with North Carolina State University (NCSU), fabricated copper accelerator cavities and used Atomic Layer Deposition (ALD) to apply thin metal coatings of tungsten and platinum. It was hypothesized that a tungsten coating would provide a robust surface more resistant to arcing and arc damage. The platinum coating was predicted to reduce processing time by inhibiting oxides that form on copper surfaces soon after machining. Two sets of cavity parts were fabricated. One was coated with 35 nm of tungsten, and the other with approximately 10 nm of platinum. Only the platinum cavity parts could be high power tested during the Phase I program due to schedule and funding constraints. The platinum coated cavity exhibit poor performance when compared with pure copper cavities. Not only did arcing occur at lower power levels, but the processing time was actually longer. There were several issues that contributed to the poor performance. First, machining of the base copper cavity parts failed to achieve the quality and cleanliness standards specified to SLAC National Accelerator Center. Secondly, the ALD facilities were not configured to provide the high levels of cleanliness required. Finally, the nanometer coating applied was likely far too thin to provide the performance required. The coating was ablated or peeled from the surface in regions of high fields. It was concluded that the current ALD process could not provide improved performance over cavities produced at national laboratories using dedicated facilities.

  5. Transforming American High Schools: Possibilities for the Next Phase of High School Reform

    ERIC Educational Resources Information Center

    Kuo, Victor

    2010-01-01

    The next phase of high school reform is ripe with possibilities. Over the last 3 decades, educational research has identified a number of promising and effective high school models. Research demonstrates the benefits of career academies and early college schools. Schools that offer small, personalized environments; comprehensive approaches to…

  6. Turnaround High School Principals: Recruit, Prepare and Empower Leaders of Change. High Schools That Work

    ERIC Educational Resources Information Center

    Schmidt-Davis, Jon; Bottoms, Gene

    2012-01-01

    Recent studies make one reality clear: While multiple factors can cause a low-performing high school to be in a turnaround situation, every high school that makes dramatic academic improvement has strong, effective school leadership. Turning a school around is no work for novices. It takes a skilled, visionary and proactive principal to pull apart…

  7. Teaching Geomagnetism in High School

    NASA Astrophysics Data System (ADS)

    Stern, D. P.

    2001-05-01

    Many high school curricula include a one-year course in Earth Sciences, often in the 9th grade (essentially pre-algebra). That is a good time to teach about geomagnetism. Not only are dipole reversals and sea-floor magnetization central to this subject, but this is a good opportunity to introduce students to magnetism and its connection to electric currents. The story of Oersted and Faraday give a fascinating insight into the uneven path of scientific discovery, the magnetic compass and William Gilbert provide a view of the beginnings of the scientific revolution, and even basic concepts of dynamo theory and its connection to solar physics can be included. A resource including all the suitable material now exists on the world-wide web at http://www-spof.gsfc.nasa.gov/earthmag/demagint.htm (home page). A 1-month unit on geomagnetism will be outlined.

  8. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-12-01

    Mark April 3, 2001, on your calendar now! An outstanding one-day event for chemistry teachers will be held in conjunction with the ACS National Meeting in San Diego. Program Organizer Joe Baron (La Jolla High School) is planning a full day of interesting workshops that will provide you with new ideas and techniques that you can use in your classroom. Full program information will be carried in the March issue of the Journal of Chemical Education and in the Winter issue of the ACS Division of Chemical Education Newsletter. Program information will also be disseminated directly to San Diego area teachers. Joe Baron may be contacted by email at albaron@sdcoe.k12.ca.us.

  9. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2001-07-01

    Supplementing a professional reading diet of chemical demonstrations, laboratory summaries, and classroom teaching strategies with accounts of new chemical discoveries and new understandings of chemical pedagogy is a healthy choice for the "living chemistry" teacher.

    Literature Cited

    1. Calvin, M. J. Chem. Educ..1987, 64, 335.
    2. Wink, D. J. J. Chem. Educ. 1992, 69, 108.
    3. Wink, D. J. J. Chem. Educ. 1992, 69, 264.
    4. Schobert, H. H. J. Chem. Educ. 1989, 66, 242.
    5. Schobert, H. H. J. Chem. Educ. 1989, 66, 290.

    Visit CLIC,an Online Resource for High School Teachers

  10. Demographic Factors Affecting Internet Using Purposes of High School Students

    ERIC Educational Resources Information Center

    Kilic, Abdullah Faruk; Güzeller, Cem Oktay

    2017-01-01

    This study aimed at determining the impact of demographic factors on the Internet usage purposes of high school students. The population of the study consisted of students between 9th and 12th grades from the Anatolian high schools, science high schools, social sciences high schools, sports high schools and fine arts high schools in Turkey. The…

  11. High spatial resolution measurements of ram accelerator gas dynamic phenomena

    NASA Technical Reports Server (NTRS)

    Hinkey, J. B.; Burnham, E. A.; Bruckner, A. P.

    1992-01-01

    High spatial resolution experimental tube wall pressure measurements of ram accelerator gas dynamic phenomena are presented. The projectile resembles the centerbody of a ramjet and travels supersonically through a tube filled with a combustible gaseous mixture, with the tube acting as the outer cowling. Pressure data are recorded as the projectile passes by sensors mounted in the tube wall at various locations along the tube. Data obtained by using a special highly instrumented section of tube has allowed the recording of gas dynamic phenomena with a spatial resolution on the order of one tenth the projectile length. High spatial resolution tube wall pressure data from the three regimes of propulsion studied to date (subdetonative, transdetonative, and superdetonative) are presented and reveal the 3D character of the flowfield induced by projectile fins and the canting of the projectile body relative to the tube wall. Also presented for comparison to the experimental data are calculations made with an inviscid, 3D CFD code.

  12. SIMS analysis of high-performance accelerator niobium

    SciTech Connect

    Maheshwari, P.; Stevie, F. A.; Myneni, Ganapati Rao; Rigsbee, J, M.; Dhakal, Pashupati; Ciovati, Gianluigi; Griffis, D. P.

    2014-11-01

    Niobium is used to fabricate superconducting radio frequency accelerator modules because of its high critical temperature, high critical magnetic field, and easy formability. Recent experiments have shown a very significant improvement in performance (over 100%) after a high-temperature bake at 1400 degrees C for 3h. SIMS analysis of this material showed the oxygen profile was significantly deeper than the native oxide with a shape that is indicative of diffusion. Positive secondary ion mass spectra showed the presence of Ti with a depth profile similar to that of O. It is suspected that Ti is associated with the performance improvement. The source of Ti contamination in the anneal furnace has been identified, and a new furnace was constructed without Ti. Initial results from the new furnace do not show the yield improvement. Further analyses should determine the relationship of Ti to cavity performance.

  13. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1999-05-01

    assigned as a take-home activity. JCE Classroom Activity #15, "Liver and Onions: DNA Extraction from Animal and Plant Tissues" (p 400A, March 1999) also integrates chemical and biological concepts. The JCE Software videotape HIV-1 Protease: An Enzyme at Work is another useful resource. It can be used in any classroom where kinetics, catalysis, proteins, or enzymes are discussed. Information about JCE Software products can be found in recent issues of the Journal or by accessing JCE Online (http://jchemed.chem.wisc.edu). Because most high school students complete at least one year of biology before enrolling in chemistry, developing the connections between biology and chemistry can be especially productive. Connections between chemistry and biology often seem to be more real to students than do many of the phenomena we cite as applications. For example, students often are not able to make the connection between the excitation of electrons to produce electromagnetic radiation and anything that is personally relevant. The light given off by sodium or mercury vapor lights provides a common example of relating atomic emission to a useful process, but many students do not seem to find that particularly interesting. The need to make a connection between biology and chemistry becomes especially meaningful to students when the chemical change occurs within the human body. As an example, the interaction of emitted electromagnetic radiation with human cells to cause well-tanned skin seems more relevant to a greater number of students than the color of lights in a parking lot. This issue contains an article that describes a useful application of light to kill cancer cells through use of photosensitizers (p 592). The process of photodynamic therapy (PDT) provides another example that could help students make a connection between the emission of electromagnetic radiation and the challenge of killing cancer cells without harming healthy cells. Certainly this example is not a magic

  14. School-Related Factors Affecting High School Seniors' Methamphetamine Use

    ERIC Educational Resources Information Center

    Stanley, Jarrod M.; Lo, Celia C.

    2009-01-01

    Data from the 2005 Monitoring the Future survey were used to examine relationships between school-related factors and high school seniors' lifetime methamphetamine use. The study applied logistic regression techniques to evaluate effects of social bonding variables and social learning variables on likelihood of lifetime methamphetamine use. The…

  15. Hershey Montessori Farm School: Place-Based High School Biology.

    ERIC Educational Resources Information Center

    Venaleck, Judy; McDonald, Pete

    2001-01-01

    Describes how the Hershey Montessori Farm School in Huntsburg, Ohio, developed an advanced biology course, which begins with an experience-based, task-oriented approach within different biomes of the surrounding environs while incorporating high school content and scientific method. Concludes that integrating place-based and contextual inquiries…

  16. Coming of Age: Transitioning from Middle School to High School

    ERIC Educational Resources Information Center

    Ciminero, Sandra Elser

    2012-01-01

    To celebrate a milestone in eighth-graders' lives--leaving middle school and moving on to high school--the author assigns them the "Coming of Age" project, which examines the big idea of identity and promotes the move from self-reflection to self-expression. The project also includes writing components that correspond to each of the nine…

  17. Reasons for School Dropout in Vocational High School

    ERIC Educational Resources Information Center

    Polat, Selda

    2014-01-01

    This study aims to discuss the causative factors that lead to vocational high schools dropout by referring to the opinions of the students who did leave the school. A qualitative phenomenological research method has been designed and adopted. The study group consisted of 19 children and young adults (15-24 years old) who continue their education…

  18. Implementing Effective Schools Research: The Audit Process High School Observations.

    ERIC Educational Resources Information Center

    Brubaker, Hal; Partin, Ron

    During May of 1985, an external audit team was engaged by the Lorain (Ohio) City Schools to assess implementation of the seven correlates of an effective school. The correlates, developed by the Ohio State Department of Education, included: (1) a sense of mission; (2) strong building leadership; (3) high expectations for all students and staff;…

  19. SCHOOL AIR CONDITIONING/CASE STUDY, MCPHERSON HIGH SCHOOL.

    ERIC Educational Resources Information Center

    OSTENBERG, JOE W.

    THE STANFORD UNIVERSITY SCHOOL PLANNING LABORATORIES CONDUCTED AN EDUCATIONAL SURVEY OF THE EDUCATIONAL NEEDS OF THE MCPHERSON CITY SCHOOLS BY STUDYING THE EXISTING CONDITIONS, LOCAL ECONOMIES, AND POTENTIAL POPULATION GROWTH. IT WAS RECOMMENDED THAT A NEW SENIOR HIGH BE BUILT TO HOUSE 700-750 STUDENTS, THE ANTICIPATED ENROLLMENT 10 YEARS AFTER…

  20. Induced radioactivity in and around high-energy particle accelerators.

    PubMed

    Vincke, Helmut; Theis, Chris; Roesler, Stefan

    2011-07-01

    Particle accelerators and their surroundings are locations of residual radioactivity production that is induced by the interaction of high-energy particles with matter. This paper gives an overview of the principles of activation caused at proton accelerators, which are the main machines operated at Conseil Européen pour la Recherche Nucléaire. It describes the parameters defining radio-nuclide production caused by beam losses. The second part of the paper concentrates on the analytic calculation of activation and the Monte Carlo approach as it is implemented in the FLUKA code. Techniques used to obtain, on the one hand, estimates of radioactivity in Becquerel and, on the other hand, residual dose rates caused by the activated material are discussed. The last part of the paper focuses on experiments that allow for benchmarking FLUKA activation calculations and on simulations used to predict activation in and around high-energy proton machines. In that respect, the paper addresses the residual dose rate that will be induced by proton-proton collisions at an energy of two times 7 TeV in and around the Compact Muon Solenoid (CMS) detector. Besides activation of solid materials, the air activation expected in the CMS cavern caused by this beam operation is also discussed.

  1. The Making of a High-Tech High School.

    ERIC Educational Resources Information Center

    Lozada, Marlene

    1997-01-01

    An old elementary school building evolved into New Technology High School in Napa, California. With help from corporate sponsors, students can now e-mail assignments, and graduation requirements include multimedia design and production classes. (JOW)

  2. The California Middle College High School Program.

    ERIC Educational Resources Information Center

    California Community Colleges, Sacramento. Office of the Chancellor.

    In 1988, the California legislature provided funding for development of two Middle College High School (MCHS) projects, one at Contra Costa College (CCC), and another one at Los Angeles Southwest College (LASC). The MCHS is a high school program on a college campus designed to meet the needs of high risk urban youth with college potential. Through…

  3. Proven Strategies for Personalizing America's High Schools

    ERIC Educational Resources Information Center

    McBrady, Shannon; Williamson, Ronald

    2010-01-01

    America's high schools face the challenge of improving student learning in an ever-changing global world (Marx, 2006). Fueling the need for reform is the urgency of graduating more highly skilled citizens and the demands from federal and state government. No Child Left Behind (NCLB) and state legislation make today's high schools more accountable…

  4. Special Education in High School Redesign

    ERIC Educational Resources Information Center

    National High School Center, 2011

    2011-01-01

    This annotated bibliography, co-authored by the National High School Center and the National Secondary Transition Technical Assistance Center, identifies articles that address high school redesign as it relates to students with disabilities and special education's role in such initiatives. The articles are organized around the National High School…

  5. A Call to Action: Transforming High School for All Youth. National High School Alliance

    ERIC Educational Resources Information Center

    Institute for Educational Leadership (NJ1), 2005

    2005-01-01

    This paper identifies six core principles and recommends strategies that will foster high academic achievement, close the achievement gap, and promote civic and personal growth among all high-school-age youth in the high schools and communities. At the center of the framework is the Alliance's belief that the purpose of high school is to ensure…

  6. Shifting Attendance Trajectories from Middle to High School: Influences of School Transitions and Changing School Contexts

    PubMed Central

    Benner, Aprile D.; Wang, Yijie

    2014-01-01

    In the current study, we examine patterns of school attendance across middle and high school with a diverse sample of 8,908 students (48% female; 54% Latino, 31% White, 13% African American, 2% Asian American). Attendance declined from middle through high school, but this overall pattern masked important variations. In total, 44% of students maintained their attendance trajectories from middle to high school (11% stable high, 19% high-decreasing, 10% mid-decreasing, 4% low-decreasing), and shifting attendance trajectories often signaled greater school disengagement (38% shifted to poorer attendance trajectories, 18% experienced improved attendance trajectories). Transition experiences, school structural characteristics, and the divergence between students’ middle and high schools provided insights into which students recovered, becoming more engaged in high school versus those who became more disconnected. Implications for identifying and intervening with disengaged youth are discussed. PMID:24364827

  7. High Schools in the United States. Quick Stats Fact Sheet

    ERIC Educational Resources Information Center

    National High School Center, 2009

    2009-01-01

    This fact sheet highlights the statistics of the current status of high schools in the United States. It provides information on the following variables: (1) demography of high school students; (2) students with disabilities; (3) high school student achievement; (4) the schools; (5) school funding; (6) high school graduation rate; (7) high school…

  8. Comparing School-Based Environment of High- and Low-Performing Inner City Schools.

    ERIC Educational Resources Information Center

    Huang, Shwu-yong L.; And Others

    The perceptions of school climates at high- and low-performing schools were studied in 11 elementary schools from a large, multicultural urban school district selected for their high or low achievement. The sample consisted of 151 teachers from the 5 high-performing schools and 146 from the low-performing schools. School performance was determined…

  9. High School Classmates and College Success.

    PubMed

    Fletcher, Jason M; Tienda, Marta

    2009-10-01

    This paper uses administrative data from the University of Texas-Austin to examine whether the number of same high school classmates at college entry influences college achievement, measured by grade point average (GPA) and persistence. For each freshman cohort from 1993 through 2003 we calculate the number and ethnic makeup of college freshmen from each Texas high school. Empirical specifications include high school fixed effects to control for unobservable differences across schools that influence both college enrollment behavior and academic performance. Using an instrumental variables/fixed effects estimation strategy, we also evaluate whether "marginal" increases in the number of high school classmates influence college grades. Results show that students who arrive on campus with a larger number of high school classmates outperform their counterparts from smaller high school cohorts. Average effects of larger high school cohorts on college achievement are small, but a marginal increase in the number of same-race classmates raises GPA by 0.1 point. Results provide suggestive evidence that minority academic benefits from larger high school cohorts are greater for minority compared with white students.

  10. High School Classmates and College Success

    PubMed Central

    Fletcher, Jason M.; Tienda, Marta

    2012-01-01

    This paper uses administrative data from the University of Texas-Austin to examine whether the number of same high school classmates at college entry influences college achievement, measured by grade point average (GPA) and persistence. For each freshman cohort from 1993 through 2003 we calculate the number and ethnic makeup of college freshmen from each Texas high school. Empirical specifications include high school fixed effects to control for unobservable differences across schools that influence both college enrollment behavior and academic performance. Using an instrumental variables/fixed effects estimation strategy, we also evaluate whether “marginal” increases in the number of high school classmates influence college grades. Results show that students who arrive on campus with a larger number of high school classmates outperform their counterparts from smaller high school cohorts. Average effects of larger high school cohorts on college achievement are small, but a marginal increase in the number of same-race classmates raises GPA by 0.1 point. Results provide suggestive evidence that minority academic benefits from larger high school cohorts are greater for minority compared with white students. PMID:23172979

  11. High-powered pulsed-ion-beam acceleration and transport

    SciTech Connect

    Humphries, S. Jr.; Lockner, T.R.

    1981-11-01

    The state of research on intense ion beam acceleration and transport is reviewed. The limitations imposed on ion beam transport by space charge effects and methods available for neutralization are summarized. The general problem of ion beam neutralization in regions free of applied electric fields is treated. The physics of acceleration gaps is described. Finally, experiments on multi-stage ion acceleration are summarized.

  12. Accelerated Program in Elementary-School Mathematics--The Second Year, September 1, 1964 to August 31, 1965.

    ERIC Educational Resources Information Center

    Suppes, Patrick

    This report describes the second year of the accelerated program in elementary school mathematics being conducted by the Institute for Mathematical Studies in the Social Sciences. A description of the first year of the study, including details of the procedures by which the students were selected, can be found in "Accelerated Program in…

  13. A Nation Deceived: How Schools Hold Back America's Brightest Students. The Templeton National Report on Acceleration. Volume 2

    ERIC Educational Resources Information Center

    Colangelo, Nicholas, Ed.; Assouline, Susan G., Ed.; Gross, Miraca U. M., Ed.

    2004-01-01

    With support from the John Templeton Foundation, the editors held a Summit on Acceleration at The University of Iowa in May 2003. They invited distinguished scholars and educators from around the country to help them formulate a national report on acceleration. Together, they deliberated about what schools need to know in order to make the best…

  14. Towards Integrated Design and Modeling of High Field Accelerator Magnets

    SciTech Connect

    Caspi, S.; Ferracin, P.

    2006-06-01

    The next generation of superconducting accelerator magnets will most likely use a brittle conductor (such as Nb{sub 3}Sn), generate fields around 18 T, handle forces that are 3-4 times higher than in the present LHC dipoles, and store energy that starts to make accelerator magnets look like fusion magnets. To meet the challenge and reduce the complexity, magnet design will have to be more innovative and better integrated. The recent design of several high field superconducting magnets have now benefited from the integration between CAD (e.g. ProE), magnetic analysis tools (e.g. TOSCA) and structural analysis tools (e.g. ANSYS). Not only it is now possible to address complex issues such as stress in magnet ends, but the analysis can be better detailed an extended into new areas previously too difficult to address. Integrated thermal, electrical and structural analysis can be followed from assembly and cool-down through excitation and quench propagation. In this paper we report on the integrated design approach, discuss analysis results and point out areas of future interest.

  15. Accelerating the Reduction of Excess Russian Highly Enriched Uranium

    SciTech Connect

    Benton, J; Wall, D; Parker, E; Rutkowski, E

    2004-02-18

    This paper presents the latest information on one of the Accelerated Highly Enriched Uranium (HEU) Disposition initiatives that resulted from the May 2002 Summit meeting between Presidents George W. Bush and Vladimir V. Putin. These initiatives are meant to strengthen nuclear nonproliferation objectives by accelerating the disposition of nuclear weapons-useable materials. The HEU Transparency Implementation Program (TIP), within the National Nuclear Security Administration (NNSA) is working to implement one of the selected initiatives that would purchase excess Russian HEU (93% 235U) for use as fuel in U.S. research reactors over the next ten years. This will parallel efforts to convert the reactors' fuel core from HEU to low enriched uranium (LEU) material, where feasible. The paper will examine important aspects associated with the U.S. research reactor HEU purchase. In particular: (1) the establishment of specifications for the Russian HEU, and (2) transportation safeguard considerations for moving the HEU from the Mayak Production Facility in Ozersk, Russia, to the Y-12 National Security Complex in Oak Ridge, TN.

  16. Big School, Small School: (Re)Testing Assumptions about High School Size, School Engagement and Mathematics Achievement

    ERIC Educational Resources Information Center

    Weiss, Christopher C.; Carolan, Brian V.; Baker-Smith, E. Christine

    2010-01-01

    In an effort to increase both adolescents' engagement with school and academic achievement, school districts across the United States have created small high schools. However, despite the widespread adoption of size reduction reforms, relatively little is known about the relationship between size, engagement and outcomes in high school. In…

  17. Consumer Competency Means High School Diploma in Omaha School

    ERIC Educational Resources Information Center

    Carlock, LaNeta L.

    1977-01-01

    Westside High School in Omaha, Nebraska, developed a series of minimum competencies in seven areas as standards for their graduates. One of the seven areas, consumerism, covers money management, credit, insurance, taxes, buying decisions, and consumer protection. (BM)

  18. School of the Month: Northgate High School, Walnut Creek, California.

    ERIC Educational Resources Information Center

    Dudley, Art

    1983-01-01

    Describes solutions to burgeoning student interest in computers instituted at Northgate High School, including a computer club and independent study in computers. Purpose, membership, scheduling, meetings and activities, courseware, worksheets, and quizzes are discussed. (EJS)

  19. Wade Hampton High School: Leading Like Generals

    ERIC Educational Resources Information Center

    Principal Leadership, 2012

    2012-01-01

    This article features Wade Hampton High School in Greenville County, South Carolina. Named for Wade Hampton III--a Civil War hero, a US senator, and a governor--Wade Hampton High School celebrated its 50th anniversary in 2010 in a beautiful, modern, state-of-the-art facility built on the original school site in 2007. Although most of the 1,600…

  20. Shaw High School A Case Study in Rural High School Improvement

    ERIC Educational Resources Information Center

    Williams, Doris Terry

    2004-01-01

    Shaw High School is one of two schools making up the Shaw School District. The school is located in an old and once majestic building whose large concrete pillars still stand at the entrance. A small white house across the street holds the district administrative office. Several buildings, detached from the main building, house the cafeteria,…

  1. 4 Key Findings for High Schools from "Looking Forward to High School and College"

    ERIC Educational Resources Information Center

    Allensworth, Elaine M.; Gwynne, Julia A.; Moore, Paul; de La Torre, Marisa

    2014-01-01

    The transition from eighth grade to high school results in a substantial drop in course performance for many students. These declines in performance lead students to fall off-track for obtaining high school and college degrees. By using data on students' middle grade performance, high school staff can set goals for their students to help them meet…

  2. Pedagogical Stances of High School ESL Teachers: "Huelgas" in High School ESL Classrooms

    ERIC Educational Resources Information Center

    del Carmen Salazar, Maria

    2010-01-01

    This article presents a qualitative case study of the pedagogical stances of high school English as a Second Language (ESL) teachers, and the subsequent responses of resistance or conformity by their English Language Learners (ELLs). The participants include three high school ESL teachers and 60 high school ESL students of Mexican origin. Findings…

  3. Junior High Publications: Junior High School Staff Members Master Same Desktop Publishing as High School Counterparts.

    ERIC Educational Resources Information Center

    Pyle, Betty; Cangelosi, Sandy

    1988-01-01

    Argues that middle and junior high schools can produce professional looking student publications by using desktop publishing. Presents three newspaper pages designed with the Apple Macintosh, using "Pagemaker,""Cricket Draw," and "Microsoft Word" software. (MM)

  4. Thomas Jefferson versus Wellesley High School.

    ERIC Educational Resources Information Center

    Loss, Richard

    1983-01-01

    One reason for the concern with high schools is that their performance limits, sometimes severely, what the colleges and universities can accomplish. Thomas Jefferson's views of education are used as criteria to judge the quality of liberal education the author received from Wellesley (Massachusetts) High School. (RM)

  5. Transitions from High School to College

    ERIC Educational Resources Information Center

    Venezia, Andrea; Jaeger, Laura

    2013-01-01

    The vast majority of high school students aspire to some kind of postsecondary education, yet far too many of them enter college without the basic content knowledge, skills, or habits of mind they need to succeed. Andrea Venezia and Laura Jaeger look at the state of college readiness among high school students, the effectiveness of programs in…

  6. Gifted Dropouts: Life after High School

    ERIC Educational Resources Information Center

    Shaw, Shana M.; Tallent-Runnels, Mary K.

    2007-01-01

    To determine if the adult lives of intellectually talented dropouts and high school graduates share commonalities, or if giftedness can help overcome the obstacles associated with not having a high school diploma, the authors looked at significant categories such as the attainment of education, employment, and certain aspects of their private…

  7. Trust, Behavior, and High School Outcomes

    ERIC Educational Resources Information Center

    Romero, Lisa S.

    2015-01-01

    Purpose: The purpose of this paper is to contribute to the literature on student trust and to examine the relationship between student trust, behavior, and academic outcomes in high school. It asks, first, does trust have a positive effect on high school outcomes? Second, does trust influence student behavior, exerting an indirect effect on…

  8. Factors Influencing High School Students' Career Aspirations

    ERIC Educational Resources Information Center

    Tang, Mei; Pan, Wei; Newmeyer, Mark D.

    2008-01-01

    This article explores the factors influencing high school students' career aspirations with a study analyzing 141 high school students. The Social Cognitive Career Development Model was utilized to examine the interactive relationships among learning experiences, career self-efficacy, outcome expectations, career interests, and career choices. The…

  9. Midcentury Modern High Schools: Rebooting the Architecture

    ERIC Educational Resources Information Center

    Havens, Kevin

    2010-01-01

    A high school is more than a building; it's a repository of memories for many community members. High schools built at the turn of the century are not only cultural and civic landmarks, they are also often architectural treasures. When these facilities become outdated, a renovation that preserves the building's aesthetics and character is usually…

  10. When a High School Goes to College

    ERIC Educational Resources Information Center

    Koszoru, Jane

    2005-01-01

    A successful dual-enrollment program that allows high school juniors and senior to experience the rigor of college classes while maintaining a small high school community on a community college campus is described. A significant percentage of students have benefited from the program by helping to develop the responsibility and knowledge necessary…

  11. Anger Assessment in Rural High School Students

    ERIC Educational Resources Information Center

    Lamb, Jacqueline M.; Puskar, Kathryn R.; Sereika, Susan; Patterson, Kathy; Kaufmann, Judith A.

    2003-01-01

    Anger and aggression in school children are a major concern in American society today. Students with high anger levels and poor cognitive processing skills are at risk for poor relationships, underachievement in school, and health problems. This article describes characteristics of children who are at risk for high anger levels and aggression as…

  12. Improving Productivity in the American High School.

    ERIC Educational Resources Information Center

    Cawelti, Gordon

    1982-01-01

    Claims that, to receive government support, education must demonstrate its contribution to productivity in private enterprise. Suggests five indicators of productivity in high schools and discusses how use of seven productivity-raising interventions common in business might affect high school productivity. (PGD)

  13. Defining High School Hazing: Control through Clarity

    ERIC Educational Resources Information Center

    Tokar, Krzysztof; Stewart, Craig

    2010-01-01

    The purpose of this study was to investigate the extent of hazing that had existed in former high school athletes who were enrolled in introduction to coaching classes in a Northern Rocky Mountain state. A nationally accepted survey was given to 189 college students of whom the majority had participated in high school sports. Results were…

  14. Sociology in U.S. High Schools

    ERIC Educational Resources Information Center

    DeCesare, Michael

    2008-01-01

    In the interest of continuing the push toward understanding the status of sociology in high schools, this research note reports some results from the first national study of high school sociology to be carried out in more than 25 years. It is also only the second national study to ever be conducted. Specifically, the author examines the prevalence…

  15. Vandalism in High Schools: An Exploratory Discussion.

    ERIC Educational Resources Information Center

    Ducey, Michael H.

    One of 52 theoretical papers on school crime and its relation to poverty, this chapter proposes that many forms of youthful misbehavior (particularly vandalism in high schools) are rooted in the normal dynamics of culture among youth. Typologies are used for understanding the social organization of the peer group world and the issue of high school…

  16. High School Redesign Gets Presidential Lift

    ERIC Educational Resources Information Center

    Adams, Caralee J.

    2013-01-01

    President Barack Obama applauded high school redesign efforts in his State of the Union address and encouraged districts to look to successful models for inspiration. Last week, he followed up with a request in his fiscal 2014 budget proposal for a new, $300 million competitive-grant program. Recognition is widespread that high schools need to…

  17. The High School Experience in Massachusetts.

    ERIC Educational Resources Information Center

    Massachusetts State Dept. of Education, Boston. Bureau of Research and Assessment.

    This examination of high schools in Massachusetts raises questions about the meaning of the high school diploma and the role, if any, of state policymakers in influencing its meaning. The study shows: (1) students with different characteristics (e.g., male, female, white, minority) and from different kinds of communities and with different…

  18. High School Students' Metaphorical Perceptions of Environment

    ERIC Educational Resources Information Center

    Çimen, Osman

    2014-01-01

    This study examines high school students' metaphorical perceptions in relation to the concept of environment. The study employs the phenomenological research design. The participants were 112 students studying at two different high schools in Ankara. As the data gathering tool, a survey form developed by the researcher was used in the study. The…

  19. High School Socioeconomic Segregation and Student Attainment

    ERIC Educational Resources Information Center

    Palardy, Gregory J.

    2013-01-01

    Using data from the Education Longitudinal Study of 2002, this study examines the association between high school socioeconomic segregation and student attainment outcomes and the mechanisms that mediate those relationships. The results show that socioeconomic segregation has a strong association with high school graduation and college enrollment.…

  20. Parallel Processing at the High School Level.

    ERIC Educational Resources Information Center

    Sheary, Kathryn Anne

    This study investigated the ability of high school students to cognitively understand and implement parallel processing. Data indicates that most parallel processing is being taught at the university level. Instructional modules on C, Linux, and the parallel processing language, P4, were designed to show that high school students are highly…

  1. A SUCCESSFUL HIGH SCHOOL DEVELOPMENTAL READING PROGRAM.

    ERIC Educational Resources Information Center

    BERKEY, SALLY C.

    A READING AND STUDY SKILLS PROGRAM INITIATED IN SEPTEMBER, 1959, IN THE CENTINELA VALLEY UNION HIGH SCHOOL DISTRICT IN SOUTHWEST LOS ANGELES IS DESCRIBED. THE DISTRICT IS COMPOSED OF FOUR HIGH SCHOOLS WITH A TOTAL ENROLLMENT OF APPROXIMATELY 6,000 STUDENTS. PARTICIPATION IN THE PROGRAM IS REQUIRED AND IS CONCENTRATED IN THE FRESHMAN ENGLISH…

  2. National Standards for High School Psychology Curricula

    ERIC Educational Resources Information Center

    American Psychologist, 2013

    2013-01-01

    The "National Standards for High School Psychology Curricula" attempts to represent current knowledge in the field of psychology in developmentally appropriate ways. Psychology is a popular high school course, one that can introduce students to scientific ideas and engage students in the learning process. However, it is difficult for even the best…

  3. Distributed Instructional Leadership in High Schools

    ERIC Educational Resources Information Center

    Halverson, Richard; Clifford, Matthew

    2013-01-01

    This article explores the idea of distributed instructional leadership as a way to understand instructional leadership practice in comprehensive high schools. Our argument is that distributed leadership analyses allow researchers to uncover and explain how instructional improvement in high schools occurs through the efforts of multiple individuals…

  4. Teaching the Classics in High School.

    ERIC Educational Resources Information Center

    Shelley, Anne Crout

    1998-01-01

    Discusses why the classics can be difficult to teach in high schools. Offers suggestions for making difficult literature more approachable for high school students by scaffolding students' engagement with classic texts; building background knowledge; developing vocabulary; facilitating the reading of the text; and through enrichment an extension.…

  5. The Classification of Romanian High-Schools

    ERIC Educational Resources Information Center

    Ivan, Ion; Milodin, Daniel; Naie, Lucian

    2006-01-01

    The article tries to tackle the issue of high-schools classification from one city, district or from Romania. The classification criteria are presented. The National Database of Education is also presented and the application of criteria is illustrated. An algorithm for high-school multi-rang classification is proposed in order to build classes of…

  6. Research on High School Economic Education: Discussion.

    ERIC Educational Resources Information Center

    Baumol, William J.

    1990-01-01

    Responds to William Becker, William Green, and Sherwin Rosen's article reviewing research literature on the teaching and learning of high school economics. Asks for greater explication of themes only introduced in their review, for example: sex and race differences in test performance and the role of computers in teaching high school economics.…

  7. HIGH SCHOOL STUDENTS WHO LATER BECAME SCHIZOPHRENIC.

    ERIC Educational Resources Information Center

    BOWER, ELI M.; AND OTHERS

    THE STUDY IDENTIFIED A GROUP OF 44 INSTITUTIONALIZED MALE SCHIZOPHRENIC PATIENTS AGED 19 TO 26 AND SURVEYED DESCRIPTIONS OF THEIR HIGH SCHOOL BEHAVIOR FOR PREDICTIVE SYMPTOMS. INTERVIEWS USING AN 18-ITEM BEHAVIOR RATING FORM WERE CONDUCTED WITH THE PATIENTS' FORMER HIGH SCHOOL TEACHERS. CONTROL SUBJECTS WERE ALSO RATED. ADDITIONAL DATA WERE…

  8. High School Students' Views on Blended Learning

    ERIC Educational Resources Information Center

    Yapici, Ibrahim Umit; Akbayin, Hasan

    2012-01-01

    In this study, it is aimed to determine the high school students' views on blended learning. The study was carried out in biology course for the lesson unit of "Classification of Living Things and Biodiversity" with 47 9[superscript th] grade students attending Nevzat Ayaz Anatolian High School in the second term of the academic year of…

  9. Modified Magnicon for High-Gradient Accelerator R&D

    SciTech Connect

    Jay L. Hirshfield

    2011-12-19

    Analysis, and low-power cold tests are described on a modified design intended for the Ka-band pulsed magnicon now in use for high-gradient accelerator R and D and rare elementary particle searches at the Yale University Beam Physics Laboratory. The modification is mainly to the output cavity of the magnicon, which presently operates in the TM310 mode. It is proposed to substitute for this a dual-chamber TE311 cavity structure. The first chamber is to extract about 40% of the beam power (about 25 MW) at 34.272 GHz, while the second chamber is to convey the power to four WR-28 output waveguides. Minor design changes are also proposed for the penultimate 11.424 GHz cavity and the beam collector. The intention of these design changes is to allow the magnicon to operate reliably 24/7, with minor sensitivity to operating parameters.

  10. Head Impacts During High School Football: A Biomechanical Assessment

    PubMed Central

    Broglio, Steven P; Sosnoff, Jacob J; Shin, SungHoon; He, Xuming; Alcaraz, Christopher; Zimmerman, Jerrad

    2009-01-01

    Context: Little is known about the impact biomechanics sustained by players during interscholastic football. Objective: To characterize the location and magnitude of impacts sustained by players during an interscholastic football season. Design: Observational design. Setting: On the field. Patients or Other Participants: High school varsity football team (n  =  35; age  =  16.85 ± 0.75 years, height  =  183.49 ± 5.31 cm, mass  =  89.42 ± 12.88 kg). Main Outcome Measure(s): Biomechanical variables (linear acceleration, rotational acceleration, jerk, force, impulse, and impact duration) related to head impacts were categorized by session type, player position, and helmet impact location. Results: Differences in grouping variables were found for each impact descriptor. Impacts occurred more frequently and with greater intensity during games. Linear acceleration was greatest in defensive linemen and offensive skill players and when the impact occurred at the top of the helmet. The largest rotational acceleration occurred in defensive linemen and with impacts to the front of the helmet. Impacts with the highest-magnitude jerk, force, and impulse and shortest duration occurred in the offensive skill, defensive line, offensive line, and defensive skill players, respectively. Top-of-the-helmet impacts yielded the greatest magnitude for the same variables. Conclusions: We are the first to provide a biomechanical characterization of head impacts in an interscholastic football team across a season of play. The intensity of game play manifested with more frequent and intense impacts. The highest-magnitude variables were distributed across all player groups, but impacts to the top of the helmet yielded the highest values. These high school football athletes appeared to sustain greater accelerations after impact than their older counterparts did. How this finding relates to concussion occurrence has yet to be elucidated. PMID:19593415

  11. The Preparation of Schools for Serious School Violence: An Analysis of New Mexico Public High Schools

    ERIC Educational Resources Information Center

    DiMatteo, Henry

    2012-01-01

    This study surveyed New Mexico high school principals on their current state of preparedness for serious school violence. The researcher surveyed 119 public high schools, receiving a 65% return rate from a 25-question survey. Specifically, this study analyzed the relationships of three predictor variables: prevention, response, and building of…

  12. Shifting Attendance Trajectories from Middle to High School: Influences of School Transitions and Changing School Contexts

    ERIC Educational Resources Information Center

    Benner, Aprile D.; Wang, Yijie

    2014-01-01

    In the current study, we examine patterns of school attendance across middle and high school with a diverse sample of 8,908 students (48% female; 54% Latino, 31% White, 13% African American, 2% Asian American). Attendance declined from middle through high school, but this overall pattern masked important variations. In total, 44% of students…

  13. Beam manipulation techniques, nonlinear beam dynamics, and space charge effect in high energy high power accelerators

    SciTech Connect

    Lee, S. Y.

    2014-04-07

    We had carried out a design of an ultimate storage ring with beam emittance less than 10 picometer for the feasibility of coherent light source at X-ray wavelength. The accelerator has an inherent small dynamic aperture. We study method to improve the dynamic aperture and collective instability for an ultimate storage ring. Beam measurement and accelerator modeling are an integral part of accelerator physics. We develop the independent component analysis (ICA) and the orbit response matrix method for improving accelerator reliability and performance. In collaboration with scientists in National Laboratories, we also carry out experimental and theoretical studies on beam dynamics. Our proposed research topics are relevant to nuclear and particle physics using high brightness particle and photon beams.

  14. Accelerate!

    PubMed

    Kotter, John P

    2012-11-01

    The old ways of setting and implementing strategy are failing us, writes the author of Leading Change, in part because we can no longer keep up with the pace of change. Organizational leaders are torn between trying to stay ahead of increasingly fierce competition and needing to deliver this year's results. Although traditional hierarchies and managerial processes--the components of a company's "operating system"--can meet the daily demands of running an enterprise, they are rarely equipped to identify important hazards quickly, formulate creative strategic initiatives nimbly, and implement them speedily. The solution Kotter offers is a second system--an agile, networklike structure--that operates in concert with the first to create a dual operating system. In such a system the hierarchy can hand off the pursuit of big strategic initiatives to the strategy network, freeing itself to focus on incremental changes to improve efficiency. The network is populated by employees from all levels of the organization, giving it organizational knowledge, relationships, credibility, and influence. It can Liberate information from silos with ease. It has a dynamic structure free of bureaucratic layers, permitting a level of individualism, creativity, and innovation beyond the reach of any hierarchy. The network's core is a guiding coalition that represents each level and department in the hierarchy, with a broad range of skills. Its drivers are members of a "volunteer army" who are energized by and committed to the coalition's vividly formulated, high-stakes vision and strategy. Kotter has helped eight organizations, public and private, build dual operating systems over the past three years. He predicts that such systems will lead to long-term success in the 21st century--for shareholders, customers, employees, and companies themselves.

  15. Catching Up: Effect of the Talent Development Ninth-Grade Instructional Interventions in Reading and Mathematics in High-Poverty High Schools

    ERIC Educational Resources Information Center

    Balfanz, Robert; Legters, Nettie; Jordan, Will

    2004-01-01

    Little is known about the feasibility and rapidity with which the academic learning of students who enter high school multiple years behind grade level can be accelerated. This study uses multiple regression analyses of standardized test and survey data from high-poverty high schools in two large urban districts to evaluate initial effects of the…

  16. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1998-08-01

    Secondary School Feature Articles * Orbital Models Made of Plastic Soda Bottles, by Vyacheslav V. Samoshin, p. 985. * Experimentally Determining the Molecular Weight of Carbon Dioxide Using a Mylar Balloon, by Barbara Albers Jackson and David J. Crouse, p. 997.

  17. High-Current Experiments for Accelerator-Based Neutron Capture Therapy Applications

    SciTech Connect

    Gierga, D.P.; Klinkowstein, R.E.; Hughey, B.H.; Shefer, R.E.; Yanch, J.C.; Blackburn, B.W.

    1999-06-06

    Several accelerator-based neutron capture therapy applications are under development. These applications include boron neutron capture therapy for glioblastoma multiform and boron neutron capture synovectomy (BNCS) for rheumatoid arthritis. These modalities use accelerator-based charged-particle reactions to create a suitable neutron source. Neutrons are produced using a high-current, 2-MV terminal tandem accelerator. For these applications to be feasible, high accelerator beam currents must be routinely achievable. An effort was undertaken to explore the operating regime of the accelerator in the milliampere range. In preparation for high-current operation of the accelerator, computer simulations of charged-particle beam optics were performed to establish high-current operating conditions. Herein we describe high beam current simulations and high beam current operation of the accelerator.

  18. High School Physics Offerings by Socioeconomic Profile

    NASA Astrophysics Data System (ADS)

    2011-12-01

    This fall we have been examining physics classes in U.S. high schools by the principal's assessment of the socioeconomic profile of each school. This month we turn our focus to the distribution of high school physics enrollment across the different types of physics offered. Not only do fewer students take physics at "worse off" schools (see the October issue), but the types of physics courses students take also differs by socioeconomic profile. About 10% of the students taking physics at "worse off" schools take AP and second-year physics; almost 20% of the students at "better off" schools take these courses. At "worse off" schools, a higher proportion of students are enrolled in conceptual courses, including Physics First and regular physics taught using a conceptual textbook. The data we have presented over the last four months suggests that differences in physics taking in high school by blacks and Hispanics are driven, in part, by underlying socioeconomic factors. Other factors, such as the availability of additional seats in physics classes and the ability of teachers to attract students to physics, also impact physics taking. It is unlikely that the racial and ethnic differences in physics taking in high school will decrease unless the underlying factors are addressed.

  19. Summary report of working group 3: High gradient and laser-structure based acceleration

    SciTech Connect

    Solyak, N.; Cowan, B.M.; /Tech-X, Boulder

    2010-01-01

    The charge for the working group on high gradient and laser-structure based acceleration was to assess the current challenges involved in developing an advanced accelerator based on electromagnetic structures, and survey state-of-the-art methods to address those challenges. The topics of more than 50 presentations in the working group covered a very broad range of issues, from ideas, theoretical models and simulations, to design and manufacturing of accelerating structures and, finally, experimental results on obtaining extremely high accelerating gradients in structures from conventional microwave frequency range up to THz and laser frequencies. Workshop discussion topics included advances in the understanding of the physics of breakdown and other phenomena, limiting high gradient performance of accelerating structures. New results presented in this workshop demonstrated significant progress in the fields of conventional vacuum structure-based acceleration, dielectric wakefield acceleration, and laser-structure acceleration.

  20. High-field plasma acceleration in a high-ionization-potential gas

    SciTech Connect

    Corde, S.; Adli, E.; Allen, J. M.; An, W.; Clarke, C. I.; Clausse, B.; Clayton, C. E.; Delahaye, J. P.; Frederico, J.; Gessner, S.; Green, S. Z.; Hogan, M. J.; Joshi, C.; Litos, M.; Lu, W.; Marsh, K. A.; Mori, W. B.; Vafaei-Najafabadi, N.; Walz, D.; Yakimenko, V.

    2016-06-17

    Plasma accelerators driven by particle beams are a very promising future accelerator technology as they can sustain high accelerating fields over long distances with high energy efficiency. They rely on the excitation of a plasma wave in the wake of a drive beam. To generate the plasma, a neutral gas can be field-ionized by the head of the drive beam, in which case the distance of acceleration and energy gain can be strongly limited by head erosion. In our research, we overcome this limit and demonstrate that electrons in the tail of a drive beam can be accelerated by up to 27 GeV in a high-ionization-potential gas (argon), boosting their initial 20.35 GeV energy by 130%. Particle-in-cell simulations show that the argon plasma is sustaining very high electric fields, of ~150 GV m-1, over ~20 cm. Lastly, the results open new possibilities for the design of particle beam drivers and plasma sources.

  1. High-field plasma acceleration in a high-ionization-potential gas

    DOE PAGES

    Corde, S.; Adli, E.; Allen, J. M.; ...

    2016-06-17

    Plasma accelerators driven by particle beams are a very promising future accelerator technology as they can sustain high accelerating fields over long distances with high energy efficiency. They rely on the excitation of a plasma wave in the wake of a drive beam. To generate the plasma, a neutral gas can be field-ionized by the head of the drive beam, in which case the distance of acceleration and energy gain can be strongly limited by head erosion. In our research, we overcome this limit and demonstrate that electrons in the tail of a drive beam can be accelerated by upmore » to 27 GeV in a high-ionization-potential gas (argon), boosting their initial 20.35 GeV energy by 130%. Particle-in-cell simulations show that the argon plasma is sustaining very high electric fields, of ~150 GV m-1, over ~20 cm. Lastly, the results open new possibilities for the design of particle beam drivers and plasma sources.« less

  2. High-field plasma acceleration in a high-ionization-potential gas

    PubMed Central

    Corde, S.; Adli, E.; Allen, J. M.; An, W.; Clarke, C. I.; Clausse, B.; Clayton, C. E.; Delahaye, J. P.; Frederico, J.; Gessner, S.; Green, S. Z.; Hogan, M. J.; Joshi, C.; Litos, M.; Lu, W.; Marsh, K. A.; Mori, W. B.; Vafaei-Najafabadi, N.; Walz, D.; Yakimenko, V.

    2016-01-01

    Plasma accelerators driven by particle beams are a very promising future accelerator technology as they can sustain high accelerating fields over long distances with high energy efficiency. They rely on the excitation of a plasma wave in the wake of a drive beam. To generate the plasma, a neutral gas can be field-ionized by the head of the drive beam, in which case the distance of acceleration and energy gain can be strongly limited by head erosion. Here we overcome this limit and demonstrate that electrons in the tail of a drive beam can be accelerated by up to 27 GeV in a high-ionization-potential gas (argon), boosting their initial 20.35 GeV energy by 130%. Particle-in-cell simulations show that the argon plasma is sustaining very high electric fields, of ∼150 GV m−1, over ∼20 cm. The results open new possibilities for the design of particle beam drivers and plasma sources. PMID:27312720

  3. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2001-10-01

    JCE publications regularly make connections to a wide variety of interests, of which art is but one. Interdisciplinary Connections is a High School Feature Column designed to meet this challenge. Articles have been published relating literature (2) and writing (3) to chemistry. If you have developed interdisciplinary connections that you would like to share with other teachers, I encourage you to contact the feature editor, Mark Alber.2 Additional examples of annotated bibliographies on chemical connections to other disciplines or applications include food science (4), environmental concerns (5), and writing (6,7). The online "Search" link in the left-hand column of the home page of HS CLIC can lead to the discovery of articles relevant to many other interests. Happy connecting!

    Note

    1. For more information about NCW, visit their Web site.
    2. For the feature mission statement and contact information see the HS CLIC Web site.

    Literature Cited

    1. Chem. Eng. News 2001, 79 (Feb 26), 50.
    2. Thoman, C. J. J. Chem. Educ. 1998, 75, 495.
    3. Alber, M. J. Chem. Educ. 2001, 78, 478.
    4. Jacobsen, E. K. J. Chem. Educ.2000, 77, 1256.
    5. Moore, J. W.; Moore, E. A. J. Chem. Educ. 1976, 53, 167; 1976, 53, 240; 1975, 52, 288.
    6. Shires, N. P. J. Chem. Educ. 1991, 68, 494.
    7. Waterman, E. L. J. Chem. Educ. 1981, 58, 826.

  4. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    2000-05-01

    for You? The end of the school year is approaching quickly. In previous years, several readers have submitted manuscripts soon after the end of the school year, while ideas were fresh in their mind and there was relief from the demands of daily classes. If you have an idea for an article, I encourage you to think about writing as soon as the school term ends. I can probably guess what you are saying, "I don't have anything that readers would be interested in." This is a common reaction, to which we frequently respond by reminding high school teachers that this is "your journal" and the only way to ensure that topics of interest to you are considered or published is by your active participation. In this presidential election year I am reminded of the familiar sentiment, "I voted in the election, so I have earned the right to complain about the politicians." I do not wish to encourage complaining, but there is a relevant correlation. By submitting manuscripts to the Journal, you are ensuring that you will continue to get your money's worth because it will include topics of interest to you. When considering a submission, many prospective authors are overwhelmed at the thought of preparing a complete manuscript. Don't let that stop you. If you have an idea, an outline, or a rough draft, any of the feature editors or I would be happy to discuss it with you. This one-on-one interaction during the development process will help you express your ideas more effectively. Many teachers across the country who are faced with similar situations and problems each day would benefit from an article discussing innovative teaching strategies or a new way to look at principles we teach every year. As you begin to formulate your ideas, I would like to emphasize five features whose editors are fellow teachers:

    • JCE Classroom Activities. An invitation for contributions was issued in the April issue of this column (JCE, 2000, 77, 431).
    • Chemical Principles Revisited

    • GPU accelerated processing of astronomical high frame-rate videosequences

      NASA Astrophysics Data System (ADS)

      Vítek, Stanislav; Švihlík, Jan; Krasula, Lukáš; Fliegel, Karel; Páta, Petr

      2015-09-01

      Astronomical instruments located around the world are producing an incredibly large amount of possibly interesting scientific data. Astronomical research is expanding into large and highly sensitive telescopes. Total volume of data rates per night of operations also increases with the quality and resolution of state-of-the-art CCD/CMOS detectors. Since many of the ground-based astronomical experiments are placed in remote locations with limited access to the Internet, it is necessary to solve the problem of the data storage. It mostly means that current data acquistion, processing and analyses algorithm require review. Decision about importance of the data has to be taken in very short time. This work deals with GPU accelerated processing of high frame-rate astronomical video-sequences, mostly originating from experiment MAIA (Meteor Automatic Imager and Analyser), an instrument primarily focused to observing of faint meteoric events with a high time resolution. The instrument with price bellow 2000 euro consists of image intensifier and gigabite ethernet camera running at 61 fps. With resolution better than VGA the system produces up to 2TB of scientifically valuable video data per night. Main goal of the paper is not to optimize any GPU algorithm, but to propose and evaluate parallel GPU algorithms able to process huge amount of video-sequences in order to delete all uninteresting data.

    • Exit Strategies: How Low-Performing High Schools Respond to High School Exit Examination Requirements

      ERIC Educational Resources Information Center

      Holme, Jennifer Jellison

      2013-01-01

      Background: Over the past several decades, a significant number of states have either adopted or increased high school exit examination requirements. Although these policies are intended to generate improvement in schools, little is known about how high schools are responding to exit testing pressures. Purpose: This study examined how five…

    • Especially for High School Teachers

      NASA Astrophysics Data System (ADS)

      Howell, J. Emory

      1999-04-01

      Secondary School Feature Articles * Amino Acid Wordsearch, by Terry L. Helser, p 495. Games, Puzzles, and Humor In honor of April Fools' Day this issue contains 22 pages devoted to games and puzzles that can be used to teach aspects of chemistry. Most are designed for high school and first-year college students. The lead article, p 481, contains an annotated bibliography of chemistry games, complete with a vendor list. Many of the annotated games must be purchased, but the other articles that follow in this issue describe some games and puzzles that require minimal preparation using a word processor and readily available materials. Actually, JCE has a long tradition of publishing games and puzzles for chemistry teachers and their students. Read the letter by Helser and the Editor's response, p 468, for some recent background. Not having counted articles over past years, I became curious and turned to the online index, accessed by way of http://jchemed.chem.wisc.edu/. Because I wanted to search the entire 75-year life of the Journal, I searched titles for the words "game", "puzzle", and "humor" and obtained a total of 85 hits from the three searches. After eliminating titles of articles that were not applicable, I found that at least 25 games, 48 puzzles, and 5 humor articles have appeared during the past 75 years. At an average of one per year, the JCE editors hardly can be accused of frivolity, but game, puzzle, and humor articles have been published. The term "game" did not appear in any titles during 1945-1970, "puzzle" did not appear from 1927 to 1953, and there was no mention of humor (in the titles) prior to 1974. What appears to be the earliest article (1929) about a game was authored by an undergraduate student at the University of Colorado (1). It was titled "Chemical Bank", and the game pieces were tokens cut from cork stoppers. Wire hooks were inserted in the side of the token to represent valence electrons available for bonding. Carbon contained 4 hooks

    • High school science fair and research integrity

      PubMed Central

      Dalley, Simon; Shepherd, Karen; Reisch, Joan

      2017-01-01

      Research misconduct has become an important matter of concern in the scientific community. The extent to which such behavior occurs early in science education has received little attention. In the current study, using the web-based data collection program REDCap, we obtained responses to an anonymous and voluntary survey about science fair from 65 high school students who recently competed in the Dallas Regional Science and Engineering Fair and from 237 STEM-track, post-high school students (undergraduates, 1st year medical students, and 1st year biomedical graduate students) doing research at UT Southwestern Medical Center. Of the post-high school students, 24% had competed in science fair during their high school education. Science fair experience was similar overall for the local cohort of Dallas regional students and the more diverse state/national cohort of post-high school students. Only one student out of 122 reported research misconduct, in his case making up the data. Unexpectedly, post-high school students who did not participate in science fair anticipated that carrying out science fair would be much more difficult than actually was the case, and 22% of the post-high school students anticipated that science fair participants would resort to research misconduct to overcome obstacles. No gender-based differences between students’ science fair experiences or expectations were evident. PMID:28328976

    • High school science fair and research integrity.

      PubMed

      Grinnell, Frederick; Dalley, Simon; Shepherd, Karen; Reisch, Joan

      2017-01-01

      Research misconduct has become an important matter of concern in the scientific community. The extent to which such behavior occurs early in science education has received little attention. In the current study, using the web-based data collection program REDCap, we obtained responses to an anonymous and voluntary survey about science fair from 65 high school students who recently competed in the Dallas Regional Science and Engineering Fair and from 237 STEM-track, post-high school students (undergraduates, 1st year medical students, and 1st year biomedical graduate students) doing research at UT Southwestern Medical Center. Of the post-high school students, 24% had competed in science fair during their high school education. Science fair experience was similar overall for the local cohort of Dallas regional students and the more diverse state/national cohort of post-high school students. Only one student out of 122 reported research misconduct, in his case making up the data. Unexpectedly, post-high school students who did not participate in science fair anticipated that carrying out science fair would be much more difficult than actually was the case, and 22% of the post-high school students anticipated that science fair participants would resort to research misconduct to overcome obstacles. No gender-based differences between students' science fair experiences or expectations were evident.

    • 15 Years of R&D on high field accelerator magnets at FNAL

      DOE PAGES

      Barzi, Emanuela; Zlobin, Alexander V.

      2016-07-01

      The High Field Magnet (HFM) Program at Fermi National Accelerator Laboratory (FNAL) has been developing Nb3Sn superconducting magnets, materials and technologies for present and future particle accelerators since the late 1990s. This paper summarizes the main results of the Nb3Sn accelerator magnet and superconductor R&D at FNAL and outlines the Program next steps.

    • SLIM, Short-pulse Technology for High Gradient Induction Accelerators

      SciTech Connect

      Krasnykh, A.; Kardo-Sysoev, A.; Arntz, F.; /Diversified Tech., Bedford

      2009-12-09

      The conclusions of this paper are: (1) The gradient of the SLIM-based technology is believed to be achievable in the same range as it is for the gradient of a modern rf-linac technology ({approx}100 MeV per meter). (2) The SLIM concept is based on the nsec TEM pulse mode operation with no laser or rf systems. (3) Main components of SLIM are not stressed while the energy is pumped into the induction system. Components can accept the hard environment conditions such as a radiation dose, mismatch, hard electromagnetic nose level, etc. Only for several nanoseconds the switch is OFF and produces a stress in the induction system. At that time, the delivery of energy to the beam takes place. (4) The energy in the induction system initially is storied in the magnetic field when the switch is ON. That fact makes another benefit: a low voltage power supplies can be used. The reliability of a lower voltage power supply is higher and they are cheaper. (5) The coreless SLIM concept offers to work in the MHz range of repetition rate. The induction system has the high electric efficiency (much higher than the DWA). (6) The array of lined up and activated SLIM cells is believed to be a solid state structure of novel accelerating technology. The electron-hole plasma in the high power solid state structure is precisely controlled by the electromagnetic process of a pulsed power supply.

    • High-brightness ion and electron rf linear accelerators

      SciTech Connect

      Jameson, R.A. )

      1989-01-01

      In the past, development work to increase the energy and intensity of particle accelerators tended to be pursued in separate directions, but now almost all modern applications have to achieve an intensity as high as possible at the desired energy, along with a very good beam quality in terms of the beam confinement, aiming, or focusing. The figure of merit used is the beam brightness, defined as the beam power (or current when the energy is fixed) divided by the phase space appropriate to the problem at hand. Phase space for the beam as a whole is six-dimensional, describing the physical size of the beam and change in size with time or distance; the area projected on one plane is called emittance. Achieving high intensity and good quality simultaneously is difficult, primarily because of nonlinear space- charge and focusing forces at nonrelativistic velocities and because of beam-breakup effects for relativistic beams. In recent years, substantial progress has been made in understanding the physics of these effects; some aspects are reviewed here and related to their impact on practical design aspects. 7 refs.

    • Helping High Schools Meet Higher Standards

      ERIC Educational Resources Information Center

      Au, Kathryn H.

      2013-01-01

      Educational policy in the U.S. currently centers on college and career readiness, with the spotlight is on high schools to meet higher expectations for students' literacy achievement. Ever-rising expectations are consistent with the U.S. standards movement, now in its third iteration. As funding for school improvement becomes increasingly scarce,…

    • After the Storm: Rebuilding Joplin High School

      ERIC Educational Resources Information Center

      French, Jim

      2012-01-01

      One of the deadliest and most destructive tornadoes in the history of the United States ripped through the southeast Missouri town of Joplin on May 22, 2011. As it traveled along a 13-mile path it claimed 161 lives and caused more than $151 million in damages. Ten schools were damaged or destroyed and Joplin High School was a total loss. Just 48…

    • LABORATORY EXERCISES IN OCEANOGRAPHY FOR HIGH SCHOOLS.

      ERIC Educational Resources Information Center

      National Science Foundation, Washington, DC.

      DESCRIBED ARE LABORATORY EXERCISES IN OCEANOGRAPHY DEVELOPED FOR USE IN HIGH SCHOOLS BY THE SECONDARY SCHOOL TEACHERS IN THE 1967 NATIONAL SCIENCE FOUNDATION (NSF) SUMMER INSTITUTE IN OCEANOGRAPHY AT FLORIDA STATE UNIVERSITY. INCLUDED ARE SUCH ACTIVITIES AS (1) THE MEASUREMENT OF TEMPERATURE, WATER VAPOR, PRESSURE, SALINITY, DENSITY, AND OTHERS,…

    • Charting a Course after High School

      ERIC Educational Resources Information Center

      Samuels, Christina A.

      2009-01-01

      This article reports that for students with disabilities, planning for life after high school is regulated by the Individuals with Disabilities Education Act (IDEA), just like other aspects of special education. But despite tweaks to the federal law over its 34-year history--including a relatively recent change that requires schools to give…

    • Career Development in Alternative High School Students

      ERIC Educational Resources Information Center

      Nyhof, Daniel Clark

      2013-01-01

      Public schools, colleges, and universities all strive to prepare students for the workforce or further education through career development activities and career education. Research shows many high school students have had insufficient exposure to and have inadequate information about career related tasks and duties. Studies also show that many…

    • High School Extracurricular Activities & College Grades.

      ERIC Educational Resources Information Center

      Rombokas, Mary; And Others

      Many factors influence the development and socialization of American adolescents including peers, schools, family, and the community. This paper examines how the relationship of extracurricular participation influences academic growth. To determine if selected personal and academic variables during high school currently affect college academic…

    • Curriculum Integration in Ontario High Schools

      ERIC Educational Resources Information Center

      Grice, James

      2011-01-01

      In many North American schools, the acquirement of knowledge is encouraged in the most fractious of ways. At the high-school level, knowledge is often channelled into separate, specialized units of study. Rarely is an effort made to develop cross-subject, unifying themes that can help students recognize important points of curricular overlap.…

    • San Miguel High School: Focus and Preparation

      ERIC Educational Resources Information Center

      Principal Leadership, 2010

      2010-01-01

      The corporate internship program is a cornerstone of the education that students receive at San Miguel High School in Tucson, Arizona. Four students share one job, so each student works for a corporate partner outside of the school every fourth day. The money they earn is used to help defray the cost of their education, and the experience is…

  1. Model Program: Brillion High School, Brillion, Wisconsin

    ERIC Educational Resources Information Center

    Meyer, Steve

    2007-01-01

    The Brillion School District is located in Brillion, Wisconsin, approximately 20 miles south of Green Bay in the heart of the Fox Valley. Brillion High School (BHS) has approximately 330 students in Grades 9-12. Brillion is home to approximately 3000 residents. Interestingly, Brillion also serves as the headquarters of three major manufacturing…

  2. Television Journalism at Chanute High School.

    ERIC Educational Resources Information Center

    McDonald, Patricia A.; Hudiburg, George F.

    1984-01-01

    Describes the successful first year of a public communications class at Chanute High School (Kansas), the objective of which was for 10 participating students to research, organize, and present a biweekly, school-oriented television program which would be shown on the local Cablevision channel. (MH)

  3. Benjamin Franklin High School Unit Program.

    ERIC Educational Resources Information Center

    Wohl, Seth F.

    The Benjamin Franklin High School Unit Program in New York City was designed to overcome the serious academic deficiencies identified as criterion for entry into the program: retardation in reading and mathematics and to improve attitudes toward school, increase classroom attendance and participation, reduce the dropout rate, improve self-image…

  4. High School Graduation--and Then What?

    ERIC Educational Resources Information Center

    Tamol, Susanna

    2007-01-01

    Have parents ever thought about the future of their child with special needs? What happens after they graduate from or ages out of the school system? In this article, the author discusses employment. She feels the best time to start planning and preparing is while the child is still in junior high school. She offers some suggestions that may help…

  5. High School Teachers' Identities: Constructing Civic Selves

    ERIC Educational Resources Information Center

    Obenchain, Kathryn M.; Balkute, Asta; Vaughn, Erin; White, Shannon

    2016-01-01

    Research suggests that teachers play a role in the type of citizenship education implemented in schools. The purpose of this qualitative case study was to explore how two high school teachers understood and enacted their civic identities as a dimension of their teacher identities. Findings suggest that factors contributing to an individual's civic…

  6. The Geography Learning of High School Seniors.

    ERIC Educational Resources Information Center

    Allen, Russell; And Others

    This report presents results of the 1988 National Assessment of Educational Progress (NAEP) survey of the geographic knowledge and skills of high school seniors. A national stratified sample of more than 3,000 twelfth graders from approximately 300 public and private schools responded to 76 multiple-choice questions about the following 4 topics in…

  7. Characteristics of Continuation High School Students.

    ERIC Educational Resources Information Center

    Kratzert, William F.; Kratzert, Mona Y.

    This document reports on a study of the self-concept of students enrolled in a continuation high school. A random sample of 40 students was selected from a school of 190 students. All were administered the Piers-Harris Children's Self Concept Scale to determine their feelings about themselves, and an author-prepared questionnaire to determine…

  8. ESL: Asian High School Students' Perspectives.

    ERIC Educational Resources Information Center

    Minami, Masahiko

    A study of 30 Asian high school students (9 males, 21 females), who were in U.S. schools for a variety of reasons, ranging from extended visits to families of relatives to temporary academic or occupational appointments of parents in U.S. universities or corporations investigated student perspectives on English-as-a-Second-Language (ESL)…

  9. New Policy Issues for Arts High Schools.

    ERIC Educational Resources Information Center

    Undercofler, James F.

    1988-01-01

    Highlights the controversy surrounding arts high schools, considering the appropriateness of their curriculum, their clientele, and their relation to the larger education and arts education communities. States that these schools must define their objectives within the larger educational context, demonstrate the power of arts education, and provide…

  10. High Schools Help Conquer Cardiac Arrest.

    ERIC Educational Resources Information Center

    Kyle, James

    1998-01-01

    A class of devices known as automated external defibrillators (AEDs) enable nonmedical professionals to respond to cardiac emergencies. The Jackson County School District, West Virginia, is the first in the country to have AEDs at high school sporting events. AEDs are proven to be safe, accurate, and easy to use. (MLF)

  11. High School Dropouts in America. Fact Sheet

    ERIC Educational Resources Information Center

    Alliance for Excellent Education, 2009

    2009-01-01

    Over a million of the students who enter ninth grade each fall fail to graduate with their peers four years later. In fact, about seven thousand students drop out every school day. Perhaps this statistic was acceptable fifty years ago, but the era in which a high school dropout could earn a living wage has ended in the United States. Dropouts…

  12. The High School Experience: What Students Say

    ERIC Educational Resources Information Center

    Groves, Robin; Welsh, Bridie

    2010-01-01

    Increasingly it is recognised that high school students' views about learning and school experiences are important considerations in education. Students' insights are important as a basis for their active and productive involvement, and where there is a serious intention to improve students' learning. This paper reports on the learning and school…

  13. Reading Attitudes of Texas High School Students

    ERIC Educational Resources Information Center

    Bussert-Webb, Kathy; Zhang, Zhidong

    2016-01-01

    Through random sampling, we surveyed 2,568 high school students throughout Texas to determine their reading attitudes vis-à-vis individual and school background variables. Sources were the Rhody reading attitude scale and public domain campus summary data; the lenses of attitude theory and social justice informed this study. Significant…

  14. Scientific Literacy of High School Students.

    ERIC Educational Resources Information Center

    Lucas, Keith B.; Tulip, David F.

    This investigation was undertaken in order to establish the status of scientific literacy among three groups of secondary school students in four Brisbane, Australia high schools, and to reduce the apparent reticence of science teachers to evaluate students' achievement in the various dimensions of scientific literacy by demonstrating appropriate…

  15. The Supported Teen: Transitioning to High School

    ERIC Educational Resources Information Center

    Dorman, Benton

    2012-01-01

    Transition plans for students with special needs provide support for social and academic success while giving students an accurate picture of what to expect in high school. The Texas Comprehensive Center recommends that schools develop a comprehensive transition plan district-wide. This district plan must include the cooperation of staff from the…

  16. Norview High School: Leadership Fosters Achievment

    ERIC Educational Resources Information Center

    Principal Leadership, 2013

    2013-01-01

    Often little unsaid things demonstrate what is truly important in a school. When teachers have common planning time and all of the department chairs share a single space as they do at Norview High School in Norfolk, VA, the unmistakable message is that instructional collaboration and leadership are expected and valued. Norview, an urban,…

  17. High School Students as Social Scientists.

    ERIC Educational Resources Information Center

    Gould, Edward; And Others

    This paper describes an informal, two-year collaboration of high school students, a teacher, and a psychologist; offered as an optional part of an elective, experimental psychology course. The goal was to help students begin to adopt the perspectives, tools, and research skills of the social scientist. The school has a student body of 2400; more…

  18. [Newington High School Gifted and Talented Program.

    ERIC Educational Resources Information Center

    Newington School District, CT.

    Newington (Connecticut) High School developed a gifted/talented program based on independent research, seminar sessions, course offerings in the collegiate setting, internships, and college credit programs at the school. An evening seminar series addresses topics chosen as a result of student needs assessment. The Collegiate Challenge Series…

  19. Vintage High School Citizenship Recognition Program.

    ERIC Educational Resources Information Center

    Napa Valley Unified School District, Napa, CA.

    THE FOLLOWING IS THE FULL TEXT OF THIS DOCUMENT: Recognition of good citizenship is one component of the Vintage High School Student Incentive Program which could be easily adapted for any school. The only direct cost is for postage to mail congratulatory letters home and a small initial cost for printing award certificates. On a rotating basis,…

  20. Cultures of Learning in Effective High Schools

    ERIC Educational Resources Information Center

    Tichnor-Wagner, Ariel; Harrison, Christopher; Cohen-Vogel, Lora

    2016-01-01

    Purpose: Research indicates that a culture of learning is a key factor in building high schools that foster academic achievement in all students. Yet less is known about which elements of a culture of learning differentiate schools with higher levels of academic performance. To fill this gap, this comparative case study examined the cultures of…

  1. Oak Mountain High School, Shelby County, Alabama.

    ERIC Educational Resources Information Center

    Design Cost Data, 2001

    2001-01-01

    Presents design features of the Oak Mountain High School (Alabama) consisting of an academic side of classrooms, administration, and media center; and an activity side consisting of cafeteria, gymnasium, practice gym, and a theater. The school's floor plan and photos are included. (GR)

  2. Restructuring Dade's High Schools: Curriculum and Organization.

    ERIC Educational Resources Information Center

    Florida International Univ., Miami. Inst. for Public Policy and Citizenship Studies.

    Findings from a study on the curriculum and organization of Dade public high schools are presented in this report. An honor student mentor group conducted a literature review and held discussions with assistant principals, English department heads, teachers, and students. From this research they concluded that problems in the schools are…

  3. States' Progress toward High School Restructuring

    ERIC Educational Resources Information Center

    National High School Center, 2007

    2007-01-01

    As many Title I high schools approach their fifth year of failing to meet adequate yearly progress (AYP), states and districts are struggling to navigate the new waters of school restructuring as required by the No Child Left Behind Act (NCLB) of 2001. This brief outlines the provisions of the law related to restructuring and includes strategies…

  4. High School Students' Meta-Modeling Knowledge

    ERIC Educational Resources Information Center

    Fortus, David; Shwartz, Yael; Rosenfeld, Sherman

    2016-01-01

    Modeling is a core scientific practice. This study probed the meta-modeling knowledge (MMK) of high school students who study science but had not had any explicit prior exposure to modeling as part of their formal schooling. Our goals were to (A) evaluate the degree to which MMK is dependent on content knowledge and (B) assess whether the upper…

  5. My Year as a High School Student

    ERIC Educational Resources Information Center

    Waldron, Deborah

    2006-01-01

    When high school physics teacher Deborah Waldron needed to pump up her knowledge of biology for National Board Certification, she enrolled in 9th grade Intensified Biology at her school. Waldron shares her observations of what she learned: from the inevitability of starting long-term projects late at night to the realization of how tempting…

  6. Writing at One Appalachian High School

    ERIC Educational Resources Information Center

    Iddings, Joshua Glenn

    2013-01-01

    The purpose of this study was to investigate twelfth grade writing instruction at one high school in the Northeastern Kentucky Appalachian region. At the time of the study, Kentucky schools were in a pivotal transitional period as they were adopting the Common Core State Standards while also removing the mandatory portfolio-based writing…

  7. STEM Applications in Turkish Science High Schools

    ERIC Educational Resources Information Center

    Colakoglu, Mustafa Hilmi

    2016-01-01

    The idea of establishing Science High Schools in Turkey was discussed in a multilateral project at the beginning of 1963. The Ministry of National Education (MoNE), Ford Foundation, Middle East Technical University (METU), Ankara University, and International Development Agency (AID) participated in this project to establish these schools. In…

  8. Subdimensions of Adolescent Belonging in High School

    ERIC Educational Resources Information Center

    Wallace, Tanner LeBaron; Ye, Feifei; Chhuon, Vichet

    2012-01-01

    Adolescents' sense of belonging in high school may serve a protective function, linking school-based relationships to positive youth outcomes. To advance the study of sense of belonging, we conducted a mixed method, factor analytic study (Phase 1 focus groups, N = 72; Phase 2 cross-sectional survey, N = 890) to explore the multidimensionality of…

  9. Academic Magnet Program at Burke High School.

    ERIC Educational Resources Information Center

    Sklarz, David P.

    A plan for the academic magnet high school (AMHS) program offered by the Charleston County (South Carolina) School District is presented in this report. A program overview describes general goals for students, which would emphasize thinking skills in all academic core areas, problem-solving skills in mathematics and research-based science,…

  10. HIGH-GRADIENT, HIGH-TRANSFORMER-RATIO, DIELECTRIC WAKE FIELD ACCELERATOR

    SciTech Connect

    Hirshfield, Jay L

    2012-04-12

    The Phase I work reported here responds to DoE'ss stated need "...to develop improved accelerator designs that can provide very high gradient (>200 MV/m for electrons...) acceleration of intense bunches of particles." Omega-P's approach to this goal is through use of a ramped train of annular electron bunches to drive a coaxial dielectric wakefield accelerator (CDWA) structure. This approach is a direct extension of the CDWA concept from acceleration in wake fields caused by a single drive bunch, to the more efficient acceleration that we predict can be realized from a tailored (or ramped) train of several drive bunches. This is possible because of a much higher transformer ratio for the latter. The CDWA structure itself has a number of unique features, including: a high accelerating gradient G, potentially with G > 1 GeV/m; continuous energy coupling from drive to test bunches without transfer structures; inherent transverse focusing forces for particles in the accelerated bunch; highly stable motion of high charge annular drive bunches; acceptable alignment tolerances for a multi-section system. What is new in the present approach is that the coaxial dielectric structure is now to be energized by-not one-but by a short train of ramped annular-shaped drive bunches moving in the outer coaxial channel of the structure. We have shown that this allows acceleration of an electron bunch traveling along the axis in the inner channel with a markedly higher transformer ratio T than for a single drive bunch. As described in this report, the structure will be a GHz-scale prototype with cm-scale transverse dimensions that is expected to confirm principles that can be applied to the design of a future THz-scale high gradient (> 500 MV/m) accelerator with mm-scale transverse dimensions. We show here a new means to significantly increase the transformer ratio T of the device, and thereby to significantly improve its suitability as a flexible and effective component in a future

  11. Linking Home-School Dissonance to School-Based Outcomes for African American High School Students

    ERIC Educational Resources Information Center

    Tyler, Kenneth; Brown-Wright, Lynda; Stevens-Watkins, Danelle; Thomas, Deneia; Stevens, Ruby; Roan-Belle, Clarissa; Gadson, Nadia; Smith, La Toya

    2010-01-01

    The current study examined associations between home-school dissonance and several academic and psychological variables among 239 African American high school students. Regression analyses revealed that home-school dissonance significantly predicted multiple academic and psychological variables, including academic cheating, disruptive classroom…

  12. TEACHING HIGH-SCHOOL SCIENCE.

    ERIC Educational Resources Information Center

    BARNARD, J. DARRELL

    THIS DOCUMENT WAS DEVELOPED TO HELP THE SECONDARY SCHOOL SCIENCE TEACHER KEEP PACE WITH THE CONTINUALLY ADVANCING FIELD OF EDUCATIONAL RESEARCH. IT IS ONE IN A SERIES OF PAMPHLETS ON "WHAT RESEARCH SAYS TO THE TEACHER," PRODUCED JOINTLY BY THE NATIONAL EDUCATION ASSOCIATION (NEA) DEPARTMENT OF CLASSROOM TEACHERS AND THE AMERICAN…

  13. High School Preparation for Employment.

    ERIC Educational Resources Information Center

    Hotchkiss, Lawrence; And Others

    This report contains four studies related to preparation of youth for employment after leaving school. The first study, "Learning as a Product of Exposure and Readiness" (Hotchkiss), examined the effects of curriculum on the learning of basic skills using an interaction model. The data collected revealed statistically significant interactions…

  14. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1998-01-01

    Secondary School Feature Articles * Heat Capacity, Body Temperature, and Hypothermia, by Doris Kimbrough, p 48. * The Electromotive Series and Other Non-Absolute Scales, by Gavin Peckham, p 49. * Demonstrations on Paramagnetism with an Electronic Balance, by Adolf Cortel, p 61. * Toward More Performance Evaluation in Chemistry, by Sharon Rasp, p 64. A Wealth of Useful Information

  15. National standards for high school psychology curricula.

    PubMed

    2013-01-01

    The National Standards for High School Psychology Curricula attempts to represent current knowledge in the field of psychology in developmentally appropriate ways. Psychology is a popular high school course, one that can introduce students to scientific ideas and engage students in the learning process. However, it is difficult for even the best of teachers to present all of psychology in a single course for students who begin with virtually no formal knowledge of psychology. The standards presented here constitute the first of two reports in this issue of the American Psychologist (January 2013) representing recent American Psychological Association (APA) policies that support high-quality instruction in the teaching of high school psychology. These standards provide curricular benchmarks for student learning in the high school course.

  16. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE... Adjustment § 39.145 Can a school receive both a small school adjustment and a small high school adjustment? A school that meets the criteria in § 39.140 can receive both a small school adjustment and a small...

  17. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE... Adjustment § 39.145 Can a school receive both a small school adjustment and a small high school adjustment? A school that meets the criteria in § 39.140 can receive both a small school adjustment and a small...

  18. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE... Adjustment § 39.145 Can a school receive both a small school adjustment and a small high school adjustment? A school that meets the criteria in § 39.140 can receive both a small school adjustment and a small...

  19. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE... Adjustment § 39.145 Can a school receive both a small school adjustment and a small high school adjustment? A school that meets the criteria in § 39.140 can receive both a small school adjustment and a small...

  20. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE... Adjustment § 39.145 Can a school receive both a small school adjustment and a small high school adjustment? A school that meets the criteria in § 39.140 can receive both a small school adjustment and a small...

  1. DOING Astronomy Research in High Schools.

    NASA Astrophysics Data System (ADS)

    Nook, M. A.; Williams, D. L.

    2000-12-01

    A collaboration between six science teachers at five central Minnesota high schools and astronomers at St. Cloud State University designed and implemented a program to involve high school students in active observational astronomy research. The emphasis of the program is to engage students and teachers in a research project that allows them to better understand the nature of scientific endeavor. Small, computerized telescopes and CCD cameras make it possible for high schools to develop astronomical research programs where the process of science can be experienced first hand. Each school obtained an 8-inch or 10-inch computerized SCT and a CCD camera or SLR. Astronomers from St. Cloud State University (SCSU) trained the teachers in proper astronomical techniques, as well as helping to establish the goals and objectives of the research projects. Each high school instructor trained students in observing and data reduction techniques and served as the research director for their school's project. Student observations continued throughout the school year concluding in the spring, 2000. A Variable Star Symposium was held May 20, 2000 as a culminating event. Each student involved in the process was invited to attend and give a presentation on the results of their research on variable stars. The symposium included an invited talk by a professional astronomer, and student oral and poster presentations. The research is continuing in all five of the original high schools. Eight additional schools have expressed interest in this program and are becoming involved in developing their research programs. This work is supported by Toyota Motor Sales, USA, Inc. and administered by the National Science Teachers Association through a 1999 Toyota TAPESTRY Grant and by St. Cloud State University and Independent School District 742, St. Cloud, MN.

  2. Different Demotivators for Japanese Junior High and High School Learners

    ERIC Educational Resources Information Center

    Hamada, Yo

    2011-01-01

    Motivation has been studied throughout the field of language acquisition for the past 20 years. Demotivation has also been researched in Japan at primarily the university and high school level. To provide a deeper understanding of demotivation for Japanese junior and senior high school learners, this study explores the following three questions.…

  3. High transformer ratio drive beams for wakefield accelerator studies

    SciTech Connect

    England, R. J.; Ng, C.-K.; Frederico, J.; Hogan, M. J.; Litos, M.; Muggli, P.; Joshi, C.; An, W.; Andonian, G.; Mori, W.; Lu, W.

    2012-12-21

    For wakefield based acceleration schemes, use of an asymmetric (or linearly ramped) drive bunch current profile has been predicted to enhance the transformer ratio and generate large accelerating wakes. We discuss plans and initial results for producing such bunches using the 20 to 23 GeV electron beam at the FACET facility at SLAC National Accelerator Laboratory and sending them through plasmas and dielectric tubes to generate transformer ratios greater than 2 (the limit for symmetric bunches). The scheme proposed utilizes the final FACET chicane compressor and transverse collimation to shape the longitudinal phase space of the beam.

  4. Accelerated High-Resolution Differential Ion Mobility Separations Using Hydrogen

    PubMed Central

    Shvartsburg, Alexandre A.; Smith, Richard D.

    2011-01-01

    The resolving power of differential ion mobility spectrometry (FAIMS) was dramatically increased recently by carrier gases comprising up to 75% He or various vapors, enabling many new applications. However, the need for resolution of complex mixtures is virtually open-ended and many topical analyses demand yet finer separations. Also, the resolving power gains are often at the expense of speed, in particular making high-resolution FAIMS incompatible with online liquid-phase separations. Here, we report FAIMS employing hydrogen, specifically in mixtures with N2 containing up to 90% H2. Such compositions raise the mobilities of all ions and thus the resolving power beyond that previously feasible, while avoiding the electrical breakdown inevitable in He-rich mixtures. The increases in resolving power and ensuing peak resolution are especially significant at H2 fractions above ~50%. Higher resolution can be exchanged for acceleration of the analyses by up to ~4 times, at least. For more mobile species such as multiply-charged peptides, this exchange is presently forced by the constraints of existing FAIMS devices, but future designs optimized for H2 should consistently improve resolution for all analytes. PMID:22074292

  5. High speed BLASTN: an accelerated MegaBLAST search tool

    PubMed Central

    Chen, Ying; Ye, Weicai; Zhang, Yongdong; Xu, Yuesheng

    2015-01-01

    Sequence alignment is a long standing problem in bioinformatics. The Basic Local Alignment Search Tool (BLAST) is one of the most popular and fundamental alignment tools. The explosive growth of biological sequences calls for speedup of sequence alignment tools such as BLAST. To this end, we develop high speed BLASTN (HS-BLASTN), a parallel and fast nucleotide database search tool that accelerates MegaBLAST—the default module of NCBI-BLASTN. HS-BLASTN builds a new lookup table using the FMD-index of the database and employs an accurate and effective seeding method to find short stretches of identities (called seeds) between the query and the database. HS-BLASTN produces the same alignment results as MegaBLAST and its computational speed is much faster than MegaBLAST. Specifically, our experiments conducted on a 12-core server show that HS-BLASTN can be 22 times faster than MegaBLAST and exhibits better parallel performance than MegaBLAST. HS-BLASTN is written in C++ and the related source code is available at https://github.com/chenying2016/queries under the GPLv3 license. PMID:26250111

  6. Ultra-high vacuum in superconducting accelerator rings

    NASA Astrophysics Data System (ADS)

    Bazanov, A. M.; Butenko, A. V.; Galimov, A. R.; Lugovnin, A. K.; Smirnov, A. V.

    2016-12-01

    Achieving the ultra-high vacuum (UHV) in the collider and booster of the NICA project is one of the main challenges when creating this device. It determines the need for a serious approach to this issue and conducting research in this direction. First, it is necessary to understand the effect of the various components of the vacuum systems on the degree of vacuum. It is also necessary to carry out studies of pumping devices for producing the required vacuum (10-9 Pa) in the beam chamber and choose the most optimal pumping scheme. At the same time, it is necessary to figure out how various operations are carried out with the vacuum chamber: preparation of vacuum surfaces, letting in the atmosphere, and warming the chamber after closing the influence on the degree of vacuum and the composition of the residual gas. The temperature may vary from room temperature to liquid helium temperature due to the difficulty of keeping the beam-chamber walls at a constant temperature, including the inner components. This complicates the processes taking place within it. Additional complexity arises due the heating of the chamber walls by various processes during the operation of the accelerator (for example, cycling the magnetic field).

  7. APPARATUS FOR CONTROL OF HIGH-ENERGY ACCELERATORS

    DOEpatents

    Heard, H.G.

    1961-10-24

    A particle beam positioning control for a synchrotron or the like is described. The control includes means for selectively impressing a sinusoidal perturbation upon the rising voltage utilized to sweep the frequency of the f-m oscillator which is conventionally coupled to the accelerating electrode of a synchrotron. The perturbation produces a variation in the normal rate of change of frequency of the accelerating voltage applied to the accelerating electrode, resulting in an expansion or contraction of the particle beam orbit diameter during the perturbation. The beam may thus be controlled such that a portion strikes a target positioned close to the expanded or contracted orbit diameter and returns to the original orbit for further acceleration to the final energy. (AEC)

  8. High School Students' Attitudes Toward Homosexuality.

    ERIC Educational Resources Information Center

    Price, James H.

    1982-01-01

    A review of research concerning attitudes toward homosexuality and a study of 278 high school students' attitudes toward homosexuality show that males have significantly greater negative attitudes toward homosexuality. Tables display results of the study. (CJ)

  9. High School Biology: The Early Years.

    ERIC Educational Resources Information Center

    Rosenthal, Dorothy B.; Bybee, Rodger W.

    1988-01-01

    Discusses the emergence of the biology curriculum which replaced physiology, zoology, and botany in high school science courses and supplanted an early form of general science known as natural history. (RT)

  10. High School Polydrug Users and Abusers.

    ERIC Educational Resources Information Center

    Wright, Loyd S.

    1985-01-01

    Among 433 high school seniors, 12 percent were determined to be either polydrug users or abusers. Comparisons between nonpolydrug users and polydrug users on family violence, personality traits, psychological characteristics, and behavior are given. (Author/BL)

  11. Black Box Theatres: Cheyenne Mountain High School.

    ERIC Educational Resources Information Center

    Binder, Robert D.

    2002-01-01

    Describes the design of the academic arts building at Cheyenne Mountain High School in Colorado Springs, Colorado, including its black box theater, art classroom, computer graphics lab, gallery, video production area, and chorus classroom. (EV)

  12. Environmental Chemistry in the High School Curriculum.

    ERIC Educational Resources Information Center

    Stearns, Carole

    1988-01-01

    Discusses the incorporation of environmental chemistry topics into the traditional high school chemistry curriculum. Describes and provides lesson plans for the sulfur cycle and acid rain, and radioactivity and nuclear energy. Considers possible laboratory experiments. (CW)

  13. The College High School: An Educational Alternative

    ERIC Educational Resources Information Center

    Golden, Lester O.

    1973-01-01

    Without building costly new plants, the College High School plan can be implemented. This plan provides the kind of climate usually associated with colleges, where students accept major responsibility for selecting courses, choosing teachers, and managing free time. (Editor)

  14. Bridging the Industry-High School Gap.

    ERIC Educational Resources Information Center

    Bassow, Herb

    1984-01-01

    Highlights efforts to increase high school use of chemical industry resources. Indicates that a list of industry resources available to all Philadelphia (PA) area chemistry teachers is currently available from the American Chemistry Society Corporation Associates. (JN)

  15. High School Physics and the Affordable Computer.

    ERIC Educational Resources Information Center

    Harvey, Norman L.

    1978-01-01

    Explains how the computer was used in a high school physics course; Project Physics program and individualized study PSSC physics program. Evaluates the capabilities and limitations of a $600 microcomputer system. (GA)

  16. Number Theory in the High School Classroom.

    ERIC Educational Resources Information Center

    Dence, Thomas

    1999-01-01

    Demonstrates some of the usefulness of number theory to students on the high school setting in four areas: Fibonacci numbers, Diophantine equations, continued fractions, and algorithms for computing pi. (ASK)

  17. Microbiology as a High-School Elective

    ERIC Educational Resources Information Center

    Peterson, Priscilla

    1973-01-01

    Describes a course in microbiology offered as a high school science elective. The laboratory-oriented course has proved to be very popular and provides students with the basic techniques for handling equipment and working safely with bacteria. (JR)

  18. Making the Comprehensive High School Comprehensive

    ERIC Educational Resources Information Center

    Midjaas, Carl Larsen

    1975-01-01

    Three occupational labs (child care, graphic arts, and food service) are featured as examples of vocational facilities in a new comprehensive high school in Troy, Michigan. The article stresses the planning that went into the project's development. (BP)

  19. Graph Theory and the High School Student.

    ERIC Educational Resources Information Center

    Chartrand, Gary; Wall, Curtiss E.

    1980-01-01

    Graph theory is presented as a tool to instruct high school mathematics students. A variety of real world problems can be modeled which help students recognize the importance and difficulty of applying mathematics. (MP)

  20. Introducing Astrophysics Research to High School Students.

    ERIC Educational Resources Information Center

    Etkina, Eugenia; Lawrence, Michael; Charney, Jeff

    1999-01-01

    Presents an analysis of an astrophysics institute designed for high school students. Investigates how students respond cognitively in an active science-learning environment in which they serve as apprentices to university astrophysics professors. (Author/CCM)

  1. High School Textbooks and the American Revolution

    ERIC Educational Resources Information Center

    Seller, Maxine; Trusz, Andrew

    1976-01-01

    In terms of teaching about the American Revolution, this article surveys strengths and weaknesses of representative, frequently used high school history books. It suggests how the most common weaknesses can be corrected. (Author/AV)

  2. Especially for High School Teachers

    NASA Astrophysics Data System (ADS)

    Howell, J. Emory

    1998-06-01

    Secondary School Feature Articles * Why Do Alcoholic Beverages Have "Legs"?, by Todd P. Silverstein, p 723. * Audience-Appropriate Analogies: Collision Theory, by Kent W. Piepgrass, p 724. * Using Balls from Different Sports To Model the Variation of Atomic Sizes, by Gabriel Pinto, p 725. * The Convergent Evolution of a Chemistry Project: Using Laboratory Posters as a Platform for Web Page Construction, by Sally Rigeman, p 727. * Process Development in the Teaching Laboratory, by Leonard C. Klein and Susanne M. Dana, p 745.

  3. Chicago High School Redesign Initiative: Schools, Students, and Outcomes. Research Report

    ERIC Educational Resources Information Center

    Sporte, Susan; de la Torre, Marisa

    2010-01-01

    Between 2002 and 2007, the Chicago High School Redesign Initiative (CHSRI) opened 23 small high schools. Implemented in partnership with Chicago Public Schools (CPS), this initiative aimed to provide populations of low-performing students in under-served areas of the city with high-quality, small high schools. These schools were formed (1) by…

  4. High School Dropouts and Sexually Transmitted Infections

    PubMed Central

    Anderson, D. Mark; Pörtner, Claus C.

    2015-01-01

    People who drop out of high school fare worse in many aspects of life. We analyze the relationship between dropping out of high school and the probability of contracting a sexually transmitted infection (STI). Previous studies on the relationship between dropout status and sexual outcomes have not empirically addressed unobserved heterogeneity at the individual level. Using fixed effects estimators, we find evidence supporting a positive relationship between dropping out of high school and the risk of contracting an STI for females. Furthermore, we present evidence that illustrates differences between the romantic partners of dropouts versus enrolled students. These differences suggest that female dropouts may be more susceptible to contracting STIs because they partner with significantly different types of people than non-dropouts. Our results point to a previously undocumented benefit of encouraging those at risk of dropping out to stay in school longer. PMID:25705058

  5. Castro Valley High School's Solar Panels

    NASA Astrophysics Data System (ADS)

    Lew, A.; Ham, S.; Shin, Y.; Yang, W.; Lam, J.

    2014-12-01

    Solar panels are photovoltaic cells that are designed to convert the sun's kinetic energy to generate usable energy in the form of electricity. Castro Valley High School has tried to offset the cost of electricity by installing solar panels, costing the district approximately 3.29 million dollars, but have been installed incorrectly and are not operating at peak efficency. By using trigonometry we deduced that Castro Valley High School's south facing solar panels were at an incline of 10o and that the east and west facing solar panels are at an incline of 5o. By taking the averages of the optimum angles for the months of September through May, roughly when school is in session, we found that the optimum angle for south facing solar panels should be roughly 46o. This shows that Castro Valley High School has not used it's budget to its full potential due to the fact that the solar panels were haphazardly installed.

  6. Making Decisions: College Credits Earned in High School.

    ERIC Educational Resources Information Center

    Lambert, Leo M.; Mercurio, Joseph A.

    1986-01-01

    Discusses Syracuse University's Project Advance, which offers college courses for credit to high school students. Guidelines for credit transfer and cooperative college high school programs are given. (BL)

  7. Promoting Engineering Education among High School and Middle School Students

    ERIC Educational Resources Information Center

    Goonatilake, Rohitha; Bachnak, Rafic A.

    2012-01-01

    Recent decline of students pursuing engineering degree programs is a great concern for many higher education authorities including Federal and State governments. Existing programs in high schools have not yet produced the desired results. Consequently, a number of initiatives to remedy this situation have been proposed and implemented. One such…

  8. High School Science Technology Additions, Midland Public Schools.

    ERIC Educational Resources Information Center

    Design Cost Data, 2001

    2001-01-01

    Discusses design goals, space requirements, and need for mobile furniture and "imagination stations" at Michigan's Midland Public High School science technology addition. Describes the architectural design, costs, and specifications. Includes floor plans, general description, photos and a list of consultants, manufacturers, and suppliers…

  9. Proceedings of the third ICFA mini-workshop on high intensity, high brightness hadron accelerators

    SciTech Connect

    Roser, T.

    1997-11-01

    The third mini-workshop on high intensity, high brightness hadron accelerators was held at Brookhaven National Laboratory on May 7-9, 1997 and had about 30 participants. The workshop focussed on rf and longitudinal dynamics issues relevant to intense and/or bright hadron synchrotrons. A plenary session was followed by four sessions on particular topics. This document contains copies of the viewgraphs used as well as summaries written by the session chairs.

  10. High sustained +Gz acceleration: physiological adaptation to high-G tolerance

    NASA Technical Reports Server (NTRS)

    Convertino, V. A.

    1998-01-01

    Since the early 1940s, a significant volume of research has been conducted in an effort to describe the impact of acute exposures to high-G acceleration on cardiovascular mechanisms responsible to maintaining cerebral perfusion and conscious in high performance aircraft pilots during aerial combat maneuvers. The value of understanding hemodynamic characteristics that underlie G-induced loss of consciousness has been instrumental in the evolution of optimal technology development (e.g., G-suits, positive pressure breathing, COMBAT EDGE, etc.) and pilot training (e.g., anti-G straining maneuvers). Although the emphasis of research has been placed on the development of protection against acute high +Gz acceleration effects, recent observations suggest that adaptation of cardiovascular mechanism associated with blood pressure regulation may contribute to a protective 'G-training' effect. Regular training at high G enhances G tolerance in humans, rats, guinea pigs, and dogs while prolonged layoff from exposure in high G profiles (G-layoff) can result in reduced G endurance. It seems probable that adaptations in physiological functions following chronically-repeated high G exposure (G training) or G-layoff could have significant impacts on performance during sustained high-G acceleration since protective technology such as G-suits and anit-G straining maneuvers are applied consistently during these periods of training. The purpose of this paper is to present a review of new data from three experiments that support the notion that repeated exposure on a regular basis to high sustained +Gz acceleration induces significant physiological adaptations which are associated with improved blood pressure regulation and subsequent protection of cerebral perfusion during orthostatic challenges.

  11. Integration Test of the High Voltage Hall Accelerator System Components

    NASA Technical Reports Server (NTRS)

    Kamhawi, Hani; Haag, Thomas; Huang, Wensheng; Pinero, Luis; Peterson, Todd; Dankanich, John

    2013-01-01

    NASA Glenn Research Center is developing a 4 kilowatt-class Hall propulsion system for implementation in NASA science missions. NASA science mission performance analysis was completed using the latest high voltage Hall accelerator (HiVHAc) and Aerojet-Rocketdyne's state-of-the-art BPT-4000 Hall thruster performance curves. Mission analysis results indicated that the HiVHAc thruster out performs the BPT-4000 thruster for all but one of the missions studied. Tests of the HiVHAc system major components were performed. Performance evaluation of the HiVHAc thruster at NASA Glenn's vacuum facility 5 indicated that thruster performance was lower than performance levels attained during tests in vacuum facility 12 due to the lower background pressures attained during vacuum facility 5 tests when compared to vacuum facility 12. Voltage-Current characterization of the HiVHAc thruster in vacuum facility 5 showed that the HiVHAc thruster can operate stably for a wide range of anode flow rates for discharge voltages between 250 and 600 volts. A Colorado Power Electronics enhanced brassboard power processing unit was tested in vacuum for 1,500 hours and the unit demonstrated discharge module efficiency of 96.3% at 3.9 kilowatts and 650 volts. Stand-alone open and closed loop tests of a VACCO TRL 6 xenon flow control module were also performed. An integrated test of the HiVHAc thruster, brassboard power processing unit, and xenon flow control module was performed and confirmed that integrated operation of the HiVHAc system major components. Future plans include continuing the maturation of the HiVHAc system major components and the performance of a single-string integration test.

  12. Communities, Students, Schools, and School Crime: A Confirmatory Study of Crime in U.S. High Schools

    ERIC Educational Resources Information Center

    Chen, Greg

    2008-01-01

    This study investigates how community characteristics, student background, school climate, and zero-tolerance policies interact to affect school crime. The study articulates and fits a school crime model to 712 high schools participating in the 2000 School Survey on Crime and Safety, confirming that school location and student socioeconomic status…

  13. Graduation Coaching in High-Need Urban, High Schools

    ERIC Educational Resources Information Center

    Lacefield, Warren E.; Zeller, Pamela J.; Van Kannel-Ray, Nancy

    2010-01-01

    This study documents the impact of placing graduation coaches as a GEAR UP intervention in urban high schools. The overall goal was improvement of students' academic performance, particularly for students not passing core courses. This longitudinal study began with data collection in feeder middle schools where results indicated improved student…

  14. Native American Curriculum: Primary, Intermediate, Junior High, High School.

    ERIC Educational Resources Information Center

    Fox, Sandra J.

    These four books provide curricular materials for the study of North Dakota Indians at primary through high school levels. Issued on the occasion of the North Dakota centennial, they provide information about Indians that can be integrated into the school curriculum. The books at all levels begin with study of the centennial logo, pictured on the…

  15. Development of High-Gradient Dielectric Laser-Driven Particle Accelerator Structures

    SciTech Connect

    Byer, Robert L.

    2013-11-07

    The thrust of Stanford's program is to conduct research on high-gradient dielectric accelerator structures driven with high repetition-rate, tabletop infrared lasers. The close collaboration between Stanford and SLAC (Stanford Linear Accelerator Center) is critical to the success of this project, because it provides a unique environment where prototype dielectric accelerator structures can be rapidly fabricated and tested with a relativistic electron beam.

  16. Highlighting High Performance: Whitman Hanson Regional High School; Whitman, Massachusetts

    SciTech Connect

    Not Available

    2006-06-01

    This brochure describes the key high-performance building features of the Whitman-Hanson Regional High School. The brochure was paid for by the Massachusetts Technology Collaborative as part of their Green Schools Initiative. High-performance features described are daylighting and energy-efficient lighting, indoor air quality, solar and wind energy, building envelope, heating and cooling systems, water conservation, and acoustics. Energy cost savings are also discussed.

  17. Some Health Effects of Implementing School Nursing in a Norwegian High School: A Controlled Study

    ERIC Educational Resources Information Center

    Svebak, Sven; Jensen, Eva Naper; Gotestam, K. Gunnar

    2008-01-01

    The effects of a school nursing service on health complaints and mood were investigated in a Norwegian high school. The school nursing service was delivered to students in 1 high school, and students in a comparable high school served as the comparison group. There were 41 students in the treatment group and 63 in the comparison group. All…

  18. Getting Ahead: Current Secondary and Postsecondary Acceleration Options for High-Ability Students in Indiana

    ERIC Educational Resources Information Center

    Peters, Scott J.; Mann, Rebecca L.

    2009-01-01

    The International Baccalaureate and concurrent enrollment programs are both options available for high-ability high school students. Their value lies in their potential to provide greater depth and breadth of curriculum than is traditionally possible in public high schools. This study surveyed public school corporations in Indiana to examine the…

  19. High Power Cyclotrons for Accelerator Driven System (ADS)

    NASA Astrophysics Data System (ADS)

    Calabretta, Luciano

    2012-03-01

    We present an accelerator module based on a injector cyclotron and a Superconducting Ring Cyclotron (SRC) able to accelerate H2+ molecules. H2+ molecules are extracted from the SRC stripping the binding electron by a thin carbon foil. The SRC will be able to deliver proton beam with maximum energy of 800 MeV and a maximum power of 8 MW. This module is forecasted for the DAEdALUS (Decay At rest Experiment for δcp At Laboratory for Underground Science) experiment, which is a neutrino experiment proposed by groups of MIT and Columbia University. Extensive beam dynamics studies have been carrying out in the last two years and proved the feasibility of the design. The use of H2+ molecules beam has three main advantages: 1) it reduces the space charge effects, 2) because of stripping extraction, it simplifies the extraction process w.r.t. single turn extraction and 3) we can extract more than one beam out of one SRC. A suitable upgraded version of the cyclotron module able to deliver up to 10MW beam is proposed to drive ADS. The accelerator system which is presented, consists of having three accelerators modules. Each SRC is equipped with two extraction systems delivering two beams each one with a power up to 5 MW. Each accelerator module, feeds both the two reactors at the same time. The three accelerators modules assure to maintain continuity in functioning of the two reactors. In normal operation, all the three accelerators module will deliver 6.6 MW each one, just in case one of the three accelerator module will be off, due to a fault or maintenance, the other two modules are pushed at maximum power of 10 MW. The superconducting magnetic sector of the SRC, as well as the normal conducting sector of the injector cyclotron, is calculated with the TOSCA module of OPERA3D. Here the main features of the injector cyclotron, of the SRC and the beam dynamic along the cyclotrons are presented.

  20. Superconducting travelling wave ring with high gradient accelerating section

    SciTech Connect

    Avrakhov, P.; Solyak, N.; /Fermilab

    2007-06-01

    Use of a superconducting traveling wave accelerating (STWA) structure instead of a standing wave cavity has major advantages in increasing the accelerating gradient in the ILC. In contrast with standing wave cavity STWA requires feedback loop, which sends wave from the structure output to input, making a superconducting traveling wave ring (STWR). One or few input couplers need to excite STWR and compensate power dissipations due to beam loading. To control traveling wave regime in the structure two independent knobs can be used for tuning both resonant ring frequency and backward wave. We discuss two variants of the STWR with one and two feed couplers.

  1. Going to Scale with New School Designs: Reinventing High School. The Series on School Reform

    ERIC Educational Resources Information Center

    McDonald, Joseph P.; Klein, Emily J.; Riordan, Meg

    2009-01-01

    Americans have been trying to redesign the American high school since it was first invented. One of the latest approaches--funded by the Bill and Melinda Gates Foundation--is to find inventive high school designs that work well in one location and can be replicated in others. The authors of this book followed a design team from Big Picture…

  2. Personalizing the High School Experience for Each Student

    ERIC Educational Resources Information Center

    Dimartino, Joseph; Clarke, John H.

    2008-01-01

    Discover the six most pervasive problem areas in high school education today, and learn what schools are doing to connect with students, personalize learning, differentiate instruction, and make high school curriculum more relevant.

  3. Multimodal Behavior Therapy: Case Study of a High School Student.

    ERIC Educational Resources Information Center

    Seligman, Linda

    1981-01-01

    A case study of a high school student concerned with weight problems illustrates multimodal behavior therapy and its use in a high school setting. Multimodal therapy allows the school counselor to maximize referral sources while emphasizing growth and actualization. (JAC)

  4. Who's Teaching What in High School Physics?

    ERIC Educational Resources Information Center

    White, Susan; Tyler, John

    2015-01-01

    During the 2012-13 school year, approximately 27,000 teachers taught at least one physics course in a U.S. high school. About one-third of those teachers have earned a degree in physics or physics education; the vast majority of the others have earned degrees in a variety of other science fields. About 53,000 physics classes were taught, ranging…

  5. Target Material Irradiation Studies for High-Intensity Accelerator Beams

    SciTech Connect

    Simos, N.; Kirk, H.; Ludewig, H.; Thieberger, P.; Weng, W.T.; McDonald, K.; Sheppard, J.; Evangelakis, G.; Yoshimura, K.; /KEK, Tsukuba

    2005-08-16

    This paper presents results of recent experimental studies focusing on the behavior of special materials and composites under irradiation conditions and their potential use as accelerator targets. The paper also discusses the approach and goals of on-going investigations on an expanded material matrix geared toward the neutrino superbeam and muon collider initiatives.

  6. Cumulative head impact burden in high school football.

    PubMed

    Broglio, Steven P; Eckner, James T; Martini, Douglas; Sosnoff, Jacob J; Kutcher, Jeffrey S; Randolph, Christopher

    2011-10-01

    Impacts to the head are common in collision sports such as football. Emerging research has begun to elucidate concussion tolerance levels, but sub-concussive impacts that do not result in clinical signs or symptoms of concussion are much more common, and are speculated to lead to alterations in cerebral structure and function later in life. We investigated the cumulative number of head impacts and their associated acceleration burden in 95 high school football players across four seasons of play using the Head Impact Telemetry System (HITS). The 4-year investigation resulted in 101,994 impacts collected across 190 practice sessions and 50 games. The number of impacts per 14-week season varied by playing position and starting status, with the average player sustaining 652 impacts. Linemen sustained the highest number of impacts per season (868); followed by tight ends, running backs, and linebackers (619); then quarterbacks (467); and receivers, cornerbacks, and safeties (372). Post-impact accelerations of the head also varied by playing position and starting status, with a seasonal linear acceleration burden of 16,746.1g, while the rotational acceleration and HIT severity profile burdens were 1,090,697.7 rad/sec(2) and 10,021, respectively. The adolescent athletes in this study clearly sustained a large number of impacts to the head, with an impressive associated acceleration burden as a direct result of football participation. These findings raise concern about the relationship between sub-concussive head impacts incurred during football participation and late-life cerebral pathogenesis, and justify consideration of ways to best minimize impacts and mitigate cognitive declines.

  7. Cumulative Head Impact Burden in High School Football

    PubMed Central

    Eckner, James T.; Martini, Douglas; Sosnoff, Jacob J.; Kutcher, Jeffrey S.; Randolph, Christopher

    2011-01-01

    Abstract Impacts to the head are common in collision sports such as football. Emerging research has begun to elucidate concussion tolerance levels, but sub-concussive impacts that do not result in clinical signs or symptoms of concussion are much more common, and are speculated to lead to alterations in cerebral structure and function later in life. We investigated the cumulative number of head impacts and their associated acceleration burden in 95 high school football players across four seasons of play using the Head Impact Telemetry System (HITS). The 4-year investigation resulted in 101,994 impacts collected across 190 practice sessions and 50 games. The number of impacts per 14-week season varied by playing position and starting status, with the average player sustaining 652 impacts. Linemen sustained the highest number of impacts per season (868); followed by tight ends, running backs, and linebackers (619); then quarterbacks (467); and receivers, cornerbacks, and safeties (372). Post-impact accelerations of the head also varied by playing position and starting status, with a seasonal linear acceleration burden of 16,746.1g, while the rotational acceleration and HIT severity profile burdens were 1,090,697.7 rad/sec2 and 10,021, respectively. The adolescent athletes in this study clearly sustained a large number of impacts to the head, with an impressive associated acceleration burden as a direct result of football participation. These findings raise concern about the relationship between sub-concussive head impacts incurred during football participation and late-life cerebral pathogenesis, and justify consideration of ways to best minimize impacts and mitigate cognitive declines. PMID:21787201

  8. Freedom of Expression for High School Journalists: A Case Study of Selected North Carolina Public Schools.

    ERIC Educational Resources Information Center

    Phillips, Kay D.

    A study examined the freedom of the high school press in North Carolina to determine whether publication guidelines should be in place, and if so, what those guidelines should contain. High school newspaper advisors, high school principals, and high school newspaper editors from large and small, urban and rural, eastern and western high schools…

  9. Gait analysis by high school students

    NASA Astrophysics Data System (ADS)

    Heck, André; van Dongen, Caroline

    2008-05-01

    Human walking is a complicated motion. Movement scientists have developed various research methods to study gait. This article describes how a high school student collected and analysed high quality gait data in much the same way that movement scientists do, via the recording and measurement of motions with a video analysis tool and via electromyography, i.e., the measurement of muscle activity. Physics, biology, and mathematics come together in this practical investigation work at a rather high level. It shows that science learning at school can resemble science practice in research laboratories, provided that students have adequate tools.

  10. Academic Supports Provided for Struggling High School Students. Evaluation Brief

    ERIC Educational Resources Information Center

    McGaughey, Trisha A.; Wade, Julie H.; Zhao, Huafang

    2013-01-01

    This brief describes an evaluation of academic intervention supports available to high school students in Montgomery County Public Schools (MCPS) during the 2012-2013 school year. A website review identified information about academic supports available to students or parents within each high school's web pages. A survey of school staff gathered…

  11. A Survey of Factors Influencing High School Start Times

    ERIC Educational Resources Information Center

    Wolfson, Amy R.; Carskadon, Mary A.

    2005-01-01

    The present study surveyed high school personnel regarding high school start times, factors influencing school start times, and decision making around school schedules. Surveys were analyzed from 345 secondary schools selected at random from the National Center for Educational Statistics database. Factors affecting reported start times included…

  12. Developing Student Ownership and Responsibility in High Schools. Practitioner Brief

    ERIC Educational Resources Information Center

    National Center on Scaling Up Effective Schools, 2014

    2014-01-01

    The National Center on Scaling Up Effective Schools (NCSU) spent the 2011-12 school year conducting intensive case studies of four Forth Worth, Texas high schools to understand what differentiates higher and lower performing schools. It was found that high schools can address gaps in student achievement by developing policies and practices that…

  13. Guide to NYC Small High Schools, 2005-2006

    ERIC Educational Resources Information Center

    New Visions for Public Schools, 2005

    2005-01-01

    New Visions for Public Schools has put together "The New York City Guide to Small High Schools" to describe new opportunities in the public high school system: over 200 small secondary schools created over the last five years. These small schools are part of the Department of Education's efforts to create more choices for thousands of…

  14. Girls Disengage from High School Science

    ERIC Educational Resources Information Center

    Education Digest: Essential Readings Condensed for Quick Review, 2010

    2010-01-01

    High school girls are bored, disengaged, and stressed in science classes, according to preliminary results of a study led by Northern Illinois University researchers Jennifer Schmidt and M. Cecil Smith. The two professors in the College of Education's Department of Leadership, Educational Psychology, and Foundations studied 244 high school…

  15. High Schools at the Tipping Point

    ERIC Educational Resources Information Center

    Wise, Bob

    2008-01-01

    The U. S. high school system is in crisis, Wise argues. More than 1 million students drop out every year, significant numbers of college freshmen require remedial courses to handle college work, and employers consistently express disappointment in the skills of graduates. The high dropout rate and students' lack of preparedness carries…

  16. Design Tech High School: d.tech

    ERIC Educational Resources Information Center

    EDUCAUSE, 2015

    2015-01-01

    A Bay Area charter high school, d.tech develops "innovation-ready" students by combining content knowledge with the design thinking process while fostering a sense of autonomy and purpose. The academic model is grounded in self-paced learning through a flex schedule, high standards, and design thinking through a four-year design…

  17. Successful Magnet High Schools. Innovations in Education

    ERIC Educational Resources Information Center

    US Department of Education, 2008

    2008-01-01

    Lack of relevant course work is a top reason why high school students drop out, and studies have shown that low-income and minority students are less likely to be enrolled in college preparatory curricula than their more affluent peers. In today's world, it is critical to ensure that all students have access to a rigorous, high-quality education…

  18. Gait Analysis by High School Students

    ERIC Educational Resources Information Center

    Heck, Andre; van Dongen, Caroline

    2008-01-01

    Human walking is a complicated motion. Movement scientists have developed various research methods to study gait. This article describes how a high school student collected and analysed high quality gait data in much the same way that movement scientists do, via the recording and measurement of motions with a video analysis tool and via…

  19. Moving High School Students toward Physical Literacy

    ERIC Educational Resources Information Center

    MacDonald, Lynn Couturier

    2015-01-01

    This article addresses teaching for skill and knowledge competency in high school based on the National Standards and grade-level outcomes. The outcomes guide teachers away from a curriculum that emphasizes competition through team sports, which appeals to just the highly-skilled and competitive students, toward one that is inclusive of all skill…

  20. A Comparative Study between Online Charter High Schools and Traditional High Schools in California

    ERIC Educational Resources Information Center

    Darrow, Robert Worthington

    2010-01-01

    The percentage of students who graduate from high school within four years in the United States has remained between 65 and 70% since the late 1960s. Despite various educational reforms, the number of students who are at-risk of dropping out of high school has remained constant, increasing in some years and decreasing in other years. Two…