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Sample records for hugh grantist hbehlse

  1. Dr. Hugh L. Dryden - portrait

    NASA Technical Reports Server (NTRS)

    1959-01-01

    Dr. Hugh Latimer Dryden, had many titles after his name in his lifetime. In 1949 he became the director of the National Advisory Committee for Aeronautics (NACA). Dr. Dryden received many accolades and awards both during his life and after his death, but the greatest and most appropriate honor came on March 26, 1976, when NASA renamed the NASA Flight Research Center as the NASA Hugh L. Dryden Flight Research Center. At the dedication ceremony NASA Administrator James C. Fletcher stated: 'in 1924, when the fastest racing planes did well to fly at 280 m.p.h., Dryden was already probing the transonic range of . . . flight. Later in the 1920s, he sought to develop methods of accurately measuring . . . turbulence in wind tunnels. In 1938 he was the first American to deliver the Wright Brothers lecture. His 'Turbulence and the Boundary Layer' became a classic summary on the subject. It is most fitting that this Flight Research Center, with its unique and highly specialized capability for solving aerospace problems, should memorialize the genius of Hugh Dryden.' Dr. Dryden was initially an aerodynamicist with the National Bureau of Standards. He did important early work in high-speed aerodynamics. In 1947 he became the director of aeronautical research for the NACA (a predecessor of the National Aeronautics and Space Administration). Two years later, he became NACA's director, a position he held until 1958 when he became deputy administrator of NASA.

  2. A Q & A with Karen Hughes

    ERIC Educational Resources Information Center

    Chronicle of Higher Education, 2007

    2007-01-01

    This article presents an excerpt from the interview of Karen Hughes, under secretary of state for public diplomacy and public affairs. Hughes discusses the Bush administration's effort to attract foreign students to the United States and to send American students overseas. She also talks about what American colleges and universities can do to help.

  3. The Blues Poetry of Langston Hughes

    ERIC Educational Resources Information Center

    Waldron, Edward E.

    1971-01-01

    The author discusses the criteria of the blues as an American art form. He then shows how Langston Hughes captures the mood, the feeling, the rhythm and the impact of the blues in his poetry. (Author/LF)

  4. Howard Hughes and His Colorful Aircraft Career

    ERIC Educational Resources Information Center

    Karwatka, Dennis

    2012-01-01

    The HK-1 "Hercules" airplane made its maiden flight over 60 years ago, and it still holds the record as the airplane with the largest wingspan that ever flew. Powered by eight massive 28-cylinder engines, it was piloted by Howard Hughes during its one brief flight in California. A large portion of the airplane was made of wood, which gave rise to…

  5. Differential Response: Response to Hughes and Colleagues

    ERIC Educational Resources Information Center

    Samuels, Bryan; Brown, Brett Vaughn

    2013-01-01

    In their critique of differential response (DR), Hughes and colleagues raise a number of important issues that are central to broader efforts at the Administration on Children, Youth, and Families (ACYF) including the need for greater reliance on evidence-based practice in child welfare, more rigorous evaluation methodologies, and a robust set of…

  6. Binary optics at Hughes Danbury Optical Systems

    NASA Technical Reports Server (NTRS)

    Logue, James; Power, Michael

    1993-01-01

    An overview of binary optics development at Hughes Danbury Optical Systems is presented. Design software used for mask design is presented. A brief discussion of fabrication follows. Two examples of actual projects are used to highlight the discussion: (1) a large aspheric lens; and (2) a set of grating and lenslet arrays.

  7. Religion in the Poetry of Langston Hughes.

    ERIC Educational Resources Information Center

    Culp, Mary Beth

    1987-01-01

    Religious feeling is always interdependent with racial feeling in the poetry of Langston Hughes. He views religion in the larger context of black culture, presenting it variously as a source of strength for the oppressed, an opiate of the people, the religion of slavery, and an obstacle to emancipation. (BJV)

  8. Acute Charles Bonnet Syndrome following Hughes procedure.

    PubMed

    Wilson, Michelle E; Pointdujour-Lim, Renelle; Lally, Sara; Shields, Carol L; Rabinowitz, Michael P

    2016-10-01

    A 69-year-old male experienced monocular formed visual hallucinations after occlusion of the right eye following resection of eyelid basal cell carcinoma and reconstruction with a Hughes procedure (tarsoconjunctival flap). His symptoms included recurrent, well-defined, organized, complex, formed images of small children playing in the snow. These visual phenomena occurred only in the occluded eye, began several hours after surgery, and recurred intermittently several times daily for 4 days, lasting several minutes with each occurrence. The patient retained insight into the false nature of the images throughout the duration of his symptoms, and the hallucinations resolved spontaneously while the flap was still in place. To our knowledge, this is the first reported case of Charles Bonnet Syndrome (CBS) following a Hughes procedure in a patient with normal visual acuity in the non-occluded fellow eye. Unlike other reported cases of acute onset CBS following transient monocular occlusion, hallucinations in the occluded eye remitted prior to restoration of vision in the occluded eye. Ophthalmologists should be aware of the potential for CBS following even transient monocular occlusion and should consider warning patients about its potential to occur. PMID:27467709

  9. Technical Aspects of the Poetry of Langston Hughes

    ERIC Educational Resources Information Center

    Hudson, Theodore R.

    1973-01-01

    Discusses Hughes' poetry as it was shaped by three influences: the free verse--imagist--realist schools'' popular during the first third of this century; the African and Afro-American oral and literary folk traditions; and, the essential Hughes. (Author/JM)

  10. Dedication: Hugh Daubeny, Berry Breeder and Enthusiast Extraordinaire

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This manuscript presents a short biography of Dr. Hugh Daubeny, now emeritus geneticist from Agriculture and Agri-Food Canada. This biography is being published as a dedication chapter for a book on raspberry breeding, an activity that Dr. Daubeny pursued for his 45-year career. Hugh has released 15...

  11. Langston Hughes Curriculum Packet: Dig and Be Dug in Return.

    ERIC Educational Resources Information Center

    Danielson, Susan

    Designed in a flexible format for use by college instructors, high school teachers, and community education workers, this curriculum packet serves as an introduction to the life and works of black poet Langston Hughes. The major component of the packet is a critical essay that explores the thematic highlights of Hughes's career. The remaining…

  12. 35. Photocopy of photograph (from Hugh Ackroyd photograph, Study for ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    35. Photocopy of photograph (from Hugh Ackroyd photograph, Study for POP Drydock Passage, 1978, Burlington Northern correspondence files) RIVER VIEW FROM WEST - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  13. 21. Photocopy of photograph (from Hugh Ackroyd photograph, Study for ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    21. Photocopy of photograph (from Hugh Ackroyd photograph, Study for POP Drydock Passage, 1978, Burlington Northern correspondence files) AERIAL VIEW FROM SOUTHWEST - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  14. The concept of social class: the contribution of Everett Hughes.

    PubMed

    Helmes-Hayes, R

    2000-01-01

    In French Canada in Transition (1943) and a set of related essays written between 1933 and 1941, Everett Hughes, a key figure in the "Second Chicago School" of sociology developed a novel and noteworthy conceptualization of social class. This contribution, which was not recognized outside of French-language sociology in Quebec, was an integral element of Hughes's "interpretive institutional ecology" theoretical frame of reference. It combined elements of the classical ecological theory of class (human ecology, functionalism, Simmel), aspects of a Weber-inspired analysis of class, status, and political power, and elements of a proto-dependency analysis of Quebec's industrialization in the 1930s. PMID:10797348

  15. Positive electrode processing for Hughes NiH2 cells

    NASA Technical Reports Server (NTRS)

    Bleser, C. A.

    1982-01-01

    The basic procedures were developed for the manufacture of nickel cadmium batteries. An electrochemical impregnation in an aqueous ethanol solution is used in this process. Several additional controls were instituted for production of flight electrodes, including a Hughes controlled MCD, a solution reserved exclusively for the impregnation of Hughes positive electrodes a system of complete traceability for individual electrodes, an electrical characterization test to provide information on weight and capacity at the plaque level, and a stress test to provide data on capacity, weight, and physical parameters at the electrode level.

  16. Black Poets, White Patrons: The Harlem Renaissance Years of Langston Hughes.

    ERIC Educational Resources Information Center

    Berry, Faith

    1981-01-01

    Describes the life, artistic development, literary associations and poetry of Langston Hughes during his college years at Lincoln University from 1926-1930. Adapted and condensed from the author's forthcoming biography on Langston Hughes. (APM)

  17. Obituary: Lawrence Hugh Aller, 1913-2003

    NASA Astrophysics Data System (ADS)

    Kaler, James B.

    2003-12-01

    Michigan, he taught a two-semester course in advanced general astronomy that covered nearly everything, in addition to a remarkable four-semester sequence in astrophysics (general, stellar atmospheres, nebular astrophysics, and stellar interiors). These were backed up by an extraordinary set of books. In 1943, Goldberg and he turned out the seminal toms, Stars, and Nebulae. (A solo third edition was published in 1991.) Then in 1953 arrived "The Atmospheres of the Sun and Stars" (revised a decade later), a tour de force on the physics of stellar plasmas and radiative transfer that became the bible of a generation of astronomers. "Nuclear Transformations, Stellar Interiors, and Nebulae" appeared a year later, and "Gaseous Nebulae" two years after that (rewritten in 1984 as "Physics of Thermal Gaseous Nebulae"). Not having a computer available in the early years, he used his students, creating mammoth "Aller Problems" that solved the equations for results that went into the books. Never formally published were two massive tomes of advanced general astronomy. To those of us lucky enough to have them, they serve as references to this day. His students, both undergraduate and graduate, are everywhere, their own students in turn carrying on Lawrence's ideas and work. In 1941, Lawrence married Rosalind Duncan Hall (who survives), and together they raised three children: Hugh, Gwen, and Raymond. Not only did one son become an astronomer, but so has one granddaughter (a dynasty established). Lawrence was absorbed by news and politics. He hated injustice of any kind, and let you know about it. He could entertain for hours with stories of his youth and of other astronomers, never realizing that he would also be the source of affectionate stories that would be told and retold by his own students. Of beautiful heart, he was a good father, both to his own children and to those he adopted as his students, none of whom, having been taught by him, will ever forget. Incredibly prolific, his

  18. Additional Responses to Hugh Heclo's "On Thinking Institutionally"

    ERIC Educational Resources Information Center

    Lincoln, Timothy D.; Fennell, Robert C.

    2011-01-01

    Issue 13:3 of this journal (July 2010) included a "Conversation" on Hugh Heclo's recent publication "On Thinking Institutionally" (Paradigm Publishers, 2008) with a book review by Robert Fennell and responses by Richard Ascough, Tat-siong Benny Liew, Michael McLain, and Lynne Westfield. Here we publish two additional responses to this same book.…

  19. A Haphazard Reading of McHugh and Barlow (2010)

    ERIC Educational Resources Information Center

    McHugh, R. Kathryn; Barlow, David H.

    2010-01-01

    Replies to comments on Do haphazard reviews provide sound directions for dissemination efforts? by Eileen Gambrill and Julia H. Littell on the current authors' article The dissemination and implementation of evidence-based psychological treatments: A review of current efforts by Kathryn R. McHugh and David H. Barlow. In their commentary, Gambrill…

  20. Hugh Grant's Image Restoration Discourse: An Actor Apologizes.

    ERIC Educational Resources Information Center

    Benoit, William L.

    1997-01-01

    Examines the strategies used by actor Hugh Grant (in his appearances on talk shows) to help restore his reputation after he was arrested for lewd behavior with a prostitute. Uses this case as a springboard to contrast entertainment image repair with political and corporate image repair, arguing that important situational differences can be…

  1. Evaluation of the Howard Hughes Science Grant Project, Year One

    ERIC Educational Resources Information Center

    Wolanin, Natalie; Wade, Julie

    2015-01-01

    The goal of the Howard Hughes Science Institute (HHMI) supported science program is to train one staff member to become a science lead within each of the elementary schools in the Montgomery County (Maryland) Public Schools (MCPS) district. The specific objectives of the first year of HHMI grant project were to: (1) provide approximately 20…

  2. Saving the Dust Bowl: "Big Hugh" Bennett's Triumph over Tragedy

    ERIC Educational Resources Information Center

    Smith, Rebecca

    2007-01-01

    In the 1930s, years of injudicious cultivation had devastated 100 million acres of Kansas, Oklahoma, Texas, Colorado, and New Mexico. This was the Dust Bowl, and it exposed a problem that had silently plagued American agriculture for centuries--soil erosion. Farmers, scientists, and the government alike considered it trivial until Hugh Hammond…

  3. Langston Hughes's Jess B. Semple and the Blues

    ERIC Educational Resources Information Center

    Klotman, Phillis R.

    1975-01-01

    An analysis of the factors responsible for the popularity of the Jesse B. Semple tales of Langston Hughes: the appeal of the skit technique, the simplicity in the development of theme and character, reader identification, and the intermittent sound of the blues in prose. (EH)

  4. Ted Hughes: The Development of a Children's Poet

    ERIC Educational Resources Information Center

    Lockwood, Michael

    2009-01-01

    This article looks at how Ted Hughes' poetry for children developed over more than 30 years of publication. It traces the movement from his earlier, more conventional rhyming poems, such as "Meet My Folks!" (1961) and "Nessie the Mannerless Monster" (1964), to the mature, free verse "animal poems" for older readers of "Season Songs" (1976c),…

  5. 75 FR 24973 - United States v. Baker Hughes Inc., et al.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-06

    ... Baker Hughes, Inc. (``Baker Hughes'') of BJ Services Company (``BJ'') would violate Section 7 of the... 77019, and BJ Services Company, 4601 Westway Park Blvd., Houston, Texas 77041, Defendants. Case: 1:10-cv... Company (``BJ Services'') to enjoin Baker Hughes' proposed merger with BJ Services, and to obtain...

  6. Differential Response: What to Make of the Existing Research? A Response to Hughes et al.

    ERIC Educational Resources Information Center

    Drake, Brett

    2013-01-01

    This article is a response to "Issues in Differential Response", a review of the current evidence pertaining to differential response (DR) programs in child protective services (CPS). In my view, the Hughes, Rycus, Saunders-Adams, Hughes, and Hughes article suffers from several weaknesses. First, DR programs are critiqued as if they were…

  7. Dr. Hugh Dryden Swearing in Dr. George E. Mueller

    NASA Technical Reports Server (NTRS)

    1963-01-01

    Dr. George E. Mueller being sworn in, as Associate Administrator for the Office of Manned Space Flight for NASA, by Dr. Hugh L. Dryden NASAs Deputy Administrator. The ceremony took place at NASA HQ in Washington, DC on September 3, 1963. Mueller served as Associate Administrator from 1963 to 1969, where he was responsible for overseeing the completion of Project Apollo and for beginning the development of the Space Shuttle.

  8. The Hughes Co., Photographers, Baltimore, Maryland 4 March 1943 Ironwood ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    The Hughes Co., Photographers, Baltimore, Maryland 4 March 1943 Ironwood under construction at the U.S. Coast Guard shipyard in Curtis Bay, Maryland. Ironwood was the only 180 built by the U.S. Coast Guard and the only one not built in Duluth, Minnesota (Note the caption on the photograph reads: U.S.C.G.C. Ironwood, top view starboard looking forward) - U.S. Coast Guard Cutter IRONWOOD, Kodiak, Kodiak Island Borough, AK

  9. Complex Oscillations in the Delayed FitzHugh-Nagumo Equation

    NASA Astrophysics Data System (ADS)

    Krupa, Maciej; Touboul, Jonathan D.

    2016-02-01

    Motivated by the dynamics of neuronal responses, we analyze the dynamics of the FitzHugh-Nagumo slow-fast system with delayed self-coupling. This system provides a canonical example of a canard explosion for sufficiently small delays. Beyond this regime, delays significantly enrich the dynamics, leading to mixed-mode oscillations, bursting and chaos. These behaviors emerge from a delay-induced subcritical Bogdanov-Takens instability arising at the fold points of the S-shaped critical manifold. Underlying the transition from canard-induced to delay-induced dynamics is an abrupt switch in the nature of the Hopf bifurcation.

  10. Hughes integrated synthetic aperture radar: High performance at low cost

    SciTech Connect

    Bayma, R.W.

    1996-11-01

    This paper describes the background and development of the low cost high-performance Hughes Integrated Synthetic Aperture Radar (HISAR{trademark}) which has a full range of capabilities for real-time reconnaissance, surveillance and earth resource mapping. HISAR uses advanced Synthetic Aperture Radar (SAR) technology to make operationally effective images of near photo quality, day or night and in all weather conditions. This is achieved at low cost by maximizing the use of commercially available radar and signal-processing equipment in the fabrication. Furthermore, HISAR is designed to fit into an executive-class aircraft making it available for a wide range of users. 4 refs., 8 figs.

  11. Surviving To Write and Writing To Survive: The Complex Case of Langston Hughes.

    ERIC Educational Resources Information Center

    Ostrom, Hans

    Studying the life of Langston Hughes in the context of how to teach freshman composition can shed light on two sometimes conflicting pedagogies, the expressivist and the social-constructionist. A discouraging period of fierce criticism, illness, depression, and financial woes coincided with Hughes' 39th birthday, which his biographer Arnold…

  12. Hugh Cairns and the origin of British neurosurgery.

    PubMed

    Tailor, J; Handa, A

    2007-04-01

    Sir Hugh Cairns, the first Nuffield Professor of Surgery in Oxford and consultant neurosurgeon to the Royal Army Medical Corps during World War II, was a leader in helping to establish neurosurgery as a speciality in Britain. After learning the craft from Dr Harvey Cushing in Boston, Cairns fought against the general surgical orthodoxy in London to establish the first specialised neurosurgical unit in a teaching hospital. We review his early life, training with Cushing, his inspiring character and administrative prowess which not only helped to win the battle for neurosurgery in London but also helped to establish the Oxford Clinical School and to save thousands of lives during the Second World War. PMID:17453787

  13. On entropy weak solutions of Hughes' model for pedestrian motion

    NASA Astrophysics Data System (ADS)

    El-Khatib, Nader; Goatin, Paola; Rosini, Massimiliano D.

    2013-04-01

    We consider a generalized version of Hughes' macroscopic model for crowd motion in the one-dimensional case. It consists in a scalar conservation law accounting for the conservation of the number of pedestrians, coupled with an eikonal equation giving the direction of the flux depending on pedestrian density. As a result of this non-trivial coupling, we have to deal with a conservation law with space-time discontinuous flux, whose discontinuity depends non-locally on the density itself. We propose a definition of entropy weak solution, which allows us to recover a maximum principle. Moreover, we study the structure of the solutions to Riemann-type problems, and we construct them explicitly for small times, depending on the choice of the running cost in the eikonal equation. In particular, aiming at the optimization of the evacuation time, we propose a strategy that is optimal in the case of high densities. All results are illustrated by numerical simulations.

  14. A Powerful Friendship: Theodore von Karman and Hugh L. Dryden

    NASA Technical Reports Server (NTRS)

    Gorn, Michael

    2003-01-01

    During their long personal friendship and professional association, Theodore von Karman (1882-1963) and Hugh L. Dryden (1898-1965) exercised a pivotal if somewhat elusive influence over American aeronautics and spaceflight. Both decisive figures in organizing scientists and engineers at home and abroad, both men of undisputed eminence in their technical fields, their range of contacts in government, academia, the armed forces, industry, and professional societies spanned the globe to an extent unparalleled then as now. Moreover, because they coordinated their activities closely, their combined influence far exceeded the sum of each one s individual contributions. This paper illustrates their personal origins as well as the foundations of their friendship, how their relationship became a professional alliance, and their joint impact on the world of aeronautics and astronautics during the twentieth century.

  15. Hughes advanced nickel-cadmium batteries: An update

    NASA Technical Reports Server (NTRS)

    Bogner, R. Sam

    1991-01-01

    After delivering a significant data base on boilerplate and prototype advanced nickel cadmium (Ni/Cd) battery cells, Hughes decided to start using the Advanced Ni/Cd batteries on several of their flight programs. The advanced cell can been operated at 80 percent depth of discharge (DOD) for more than 10 years, and possibly 15 years, in geosynchronous earth orbit (GEO) applications. This cell offers an important weight saving over the standard Ni/Cd cell that is usually only operated at 50 to 60 percent DOD in GEO applications. The negative and positive electrodes are manufactured using electrochemical deposition methods which reduce the sinter corrosion problems encountered by the chemical deposition process used in the standard cells. The degradable nylon separators used in standard cells was replaced by polymer impregnated Zirconia separators.

  16. Hughes syndrome (the antiphospholipid syndrome): a disease of our time.

    PubMed

    Hughes, Graham R V

    2011-04-01

    A pro-thrombotic condition was described in 1983 which was characterised by the presence of circulating antiphospholipid antibodies, as well as peripheral thrombosis (e.g. DVT), a tendency to internal organ involvement, repeated miscarriage, and, occasionally, thrombocytopenia (aPL) (Hughes, Br Med J 287:1088-1089, 1983). Previously, there had been a number of observations, mainly in patients with lupus having "false positive" tests for syphilis, miscarriage and circulating lupus anticoagulants. The description in 1983 had three notable features (a) a detailed comprehensive clinical picture of the syndrome; (b) this description differed from other coagulopathies in showing a propensity for arterial thrombosis (e.g. stroke and heart attack); and (c) this was a syndrome quite independent from lupus. There are indications that the primary antiphospholipid syndrome will turn out to be more common than lupus, though this could still be a reflection of referral practice. PMID:21132565

  17. Straight talk with...Miyoung Chun. Interview by Virginia Hughes.

    PubMed

    Chun, Miyoung

    2013-04-01

    It was a single tweet. In February, after US President Barack Obama made a subtle nod to a new neuroscience project in his annual State of the Union address, Francis Collins, director of the country's National Institutes of Health (NIH), posted on the @NIHDirector Twitter feed: "Obama mentions the #NIH Brain Activity Map in #SOTU." Instantly, scientists were buzzing with rumors that the Brain Activity Map could be the next moon shot, with a budget and timeline similar to the Human Genome Project. The brain map began as a brief white paper and has grown into a large--and still largely undefined--collaboration of several government agencies, nonprofit foundations and private companies. As the stakeholders describe in a commentary published last month (339, 1284-1285, 2013), the goal of the initiative is to understand how thousands of neurons work in concert to control behavior and trigger disease. Miyoung Chun, vice president for science programs at The Kavli Foundation in Oxnard, California, has been developing the project since the beginning and is the self-described "glue" between its many diverse stakeholders. Chun spoke with Virginia Hughes about the evolution of the project and what it might mean for biomedicine. PMID:23558614

  18. Hugh Neill (1806-64) and the early years of the Liverpool Ophthalmic Infirmary.

    PubMed

    Silvester, Alexander

    2012-11-01

    This account of the early history of ophthalmology in Liverpool refers particularly to Hugh Neill, one of the many Edinburgh-educated surgeons working in Liverpool during the early 19th century. PMID:23143318

  19. 40. View west of Wickersham Basin in vicinity of McHugh ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. View west of Wickersham Basin in vicinity of McHugh Basin, looking west. Photo by Brian C. Morris, Puget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

  20. 41. West end of McHugh Basin, looking west toward Dingle ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    41. West end of McHugh Basin, looking west toward Dingle Basin. Photo by Brian C. Morris, PUget Power, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

  1. INTELSAT VI series spacecraft (one of five) at Hughes Aircraft Company

    NASA Technical Reports Server (NTRS)

    1992-01-01

    International Telecommunications Satellite Organization (INTELSAT) VI series spacecraft (one of five), weighing about 4.5 tons at launch and standing nearly 40 ft tall when deployed, is prepared for final testing at Hughes Aircraft Company in El Segundo, California.

  2. Hughes, Twain, Child, and Sanger: Four Who Locked Horns with the Censors

    ERIC Educational Resources Information Center

    Meltzer, Milton

    1969-01-01

    A look at the lives and conflicts of four writers--Langston Hughes, Mark Twain, Lydia Maria Child, and Margaret Sanger--who faced public criticism and censorship because oftheir views on controversial issues. (RM)

  3. Clinical outcome of Fitz-Hugh-Curtis syndrome mimicking acute biliary disease

    PubMed Central

    Woo, Seong Yong; Kim, Jin Il; Cheung, Dae Young; Cho, Se Hyun; Park, Soo-Heon; Han, Joon-Yeol; Kim, Jae Kwang

    2008-01-01

    AIM: To analyze the clinical characteristics of patients diagnosed with Fitz-Hugh-Curtis syndrome. METHODS: The clinical courses of patients that visited St. Mary’s Hospital with abdominal pain from January 2005 to December 2006 and were diagnosed with Fitz-Hugh-Curtis syndrome were examined. RESULTS: Fitz-Hugh-Curtis syndrome was identified in 22 female patients of childbearing age; their mean age was 31.0 ± 8.1 years. Fourteen of these cases presented with pain in the upper right abdomen alone or together with pain in the lower abdomen, and six patients presented with pain only in the lower abdomen. The first impression at the time of visit was acute cholecystitis or cholangitis in 10 patients and acute appendicitis or pelvic inflammatory disease in eight patients. Twenty-one patients were diagnosed by abdominal computer tomography (CT), and the results of abdominal sonography were normal for 10 of these patients. Chlamydia trichomatis was isolated from 18 patients. Two patients underwent laparoscopic adhesiotomy and 20 patients were completely cured by antibiotic treatment. CONCLUSION: For women of childbearing age with acute pain in the upper right abdomen alone or together with pain in the lower abdomen, Fitz-Hugh-Curtis syndrome should be considered during differential diagnosis. Moreover, in cases suspected to be Fitz-Hugh-Curtis syndrome, abdominal CT, rather than abdominal sonography, assists in the diagnosis. PMID:19058334

  4. Real time optical edge enhancement using a Hughes liquid crystal light valve

    NASA Technical Reports Server (NTRS)

    Chao, Tien-Hsin

    1989-01-01

    The discovery of an edge enhancement effect in using a Hughes CdS liquid crystal light valve (LCLV) is reported. An edge-enhanced version of the input writing image can be directly obtained by operating the LCLV at a lower bias frequency and bias voltage. Experimental conditions in which this edge enhancement effect can be optimized are described. Experimental results show that the SNR of the readout image using this technique is superior to that obtained using high-pass filtering. The repeatability of this effect is confirmed by obtaining an edge enhancement result using two different Hughes LCLVs. The applicability of this effect to improve discrimination capability in optical pattern recognition is addressed. The results show that the Hughes LCLV can be used in both continuous tone and edge-enhancing modes by simply adjusting its bias conditions.

  5. Case of Fitz-Hugh-Curtis syndrome in male without presentation of sexually transmitted disease.

    PubMed

    Yi, Haram; Shim, Chan Sup; Kim, Gyu Won; Kim, Jung Seok; Choi, In Zoo

    2015-11-16

    Fitz-Hugh-Curtis syndrome is a type of perihepatitis that causes liver capsular infection without infecting the hepatic parenchyma or pelvis. Fitz-Hugh-Curtis syndrome is known to occur commonly in women of childbearing age who do not use oral contraceptives and have sexual partners older than 25 years of age. However, the syndrome has been reported to occur rarely in males. The clinical symptoms are right upper quadrant pain and tenderness, and pleuritic right sided chest pain. The clinical presentation is similar in male and female. We experienced a case of Fitz-Hugh-Curtis syndrome in a 60-year-old man with the chief complaint of right upper quadrant abdominal pain. Despite a previous history of gonorrhea, we have also described our experiences of improved symptoms and recovery with allopathic medicines and have thereby reported the present case with a literature review. PMID:26601101

  6. Case of Fitz-Hugh-Curtis syndrome in male without presentation of sexually transmitted disease

    PubMed Central

    Yi, Haram; Shim, Chan Sup; Kim, Gyu Won; Kim, Jung Seok; Choi, In Zoo

    2015-01-01

    Fitz-Hugh-Curtis syndrome is a type of perihepatitis that causes liver capsular infection without infecting the hepatic parenchyma or pelvis. Fitz-Hugh-Curtis syndrome is known to occur commonly in women of childbearing age who do not use oral contraceptives and have sexual partners older than 25 years of age. However, the syndrome has been reported to occur rarely in males. The clinical symptoms are right upper quadrant pain and tenderness, and pleuritic right sided chest pain. The clinical presentation is similar in male and female. We experienced a case of Fitz-Hugh-Curtis syndrome in a 60-year-old man with the chief complaint of right upper quadrant abdominal pain. Despite a previous history of gonorrhea, we have also described our experiences of improved symptoms and recovery with allopathic medicines and have thereby reported the present case with a literature review. PMID:26601101

  7. The Hughes HS601HP spacecraft power subsystem

    SciTech Connect

    Krummann, W.; Ayvazian, H.

    1998-07-01

    The introduction of the Hughes HS 601HP (high power) spacecraft product line continuous the highly successful HS601 three axis stabilized geosynchronus spacecraft with increased power capabilities for larger payload applications. The enhanced power capabilities of the HS 601HP are built upon the heritage of 29 HS601 spacecraft presently in operation. The HS 601HP accommodates payload power ranges of 3 to 7 kilowatts and provides a smooth transition from the lower power HS 601 spacecraft to the HS 702 spacecraft, which has a payload capability up to 13 kilowatts. The HS 601HP spacecraft is designed for a 15 year life with minimal operator interaction. The HS 601HP power subsystem provides a regulated power bus with a voltage range of 52 to 53 volts during all operational phases. The power subsystem is tailored to the specific needs of the spacecraft by selecting standard products from the HS 601HP power catalog. The solar arrays, battery, power control electronics and power distribution electronics are all modular and configurable to the requirements of the spacecraft. The HS 601HP solar array is the primary power source for the spacecraft. The solar array is comprised of two sets of planar solar panels (solar wings) which track the sun in a single spacecraft axis. The solar cells are selected from three different types based upon the spacecraft power generation requirements; silicon, single junction gallium arsenide or dual junction gallium arsenide. The maximum power capability at end of life (15 years, summer solstice) ranges from 4 to 7.7 kilowatts for the three types of solar cells. The HS 601HP battery is the power source for the spacecraft during eclipse and peak sunlight power periods. The battery is comprised of four individual battery packs connected in series to produce a single battery. Each battery pack can accommodate a maximum of eight battery cells with a capacity of 350 ampere-hours. The battery pack also provides for mounting of all electronics

  8. STS-40 Payload Specialist Hughes-Fulford checks RAHF cage in SLS-1 module

    NASA Technical Reports Server (NTRS)

    1991-01-01

    STS-40 Payload Specialist Millie Hughes-Fulford, holding a checklist, opens a Research Animal Holding Facility (RAHF) cage while conducting experiments in the Spacelab Life Sciences 1 (SLS-1) module. Hughes-Fulford freefloats in front of the Rack 3 RAHF with her feet positioned just above the body restraint system (BRS) in the center aisle. The SLS-1 module is located in Columbia's, Orbiter Vehicle (OV) 102's, payload bay (PLB) and is accessible by the crewmembers from OV-102's middeck via the Spacelab (SL) tunnel. The SL tunnel opening is visible in the background.

  9. Selected results from LLNL-Hughes RAR for West Coast Scotland Experiment 1992

    SciTech Connect

    Lehman, S.K.; Johnston, B.; Twogood, R.; Wieting, M.; Yorkey, T.; Robey, H.; Whelan, D.; Nagele, R.

    1993-01-05

    The joint US-UK 1992 West Coast Scotland Experiment (WCSEX) was held in the Sound of Sleat from June 6 to 25. The LLNL-Hughes team fielded a fully polarimetric X-band hill-side real aperture radar to collect internal wave wake data. We present here a sample data set of the best radar runs.

  10. The Political Economy of Rhetorical Style: Hugh Blair's Response to the Civic-Commercial Dilemma

    ERIC Educational Resources Information Center

    Longaker, Mark Garrett

    2008-01-01

    Recent scholarship treats Hugh Blair's "Lectures" on Rhetoric and Belles Lettres (1783) as an effort to endorse either the liberal or the civic political traditions in eighteenth-century Scotland. This essay questions this orthodoxy by reading the "Lectures", and in particular Blair's attention to considerations of rhetorical style, against their…

  11. Blood Brothers: Albert and Allen Hughes in the Belly of the Hollywood Beast.

    ERIC Educational Resources Information Center

    Gates, Henry Louis, Jr.

    1994-01-01

    Recounts an interview with the Hughes brothers, who are twin black men who produced the film "Menace 2 Society," which is a film about urban delinquency and crime among black adolescents. Their comments include thoughts on racism, media stereotyping, being black in America, and their experiences with Hollywood. (GLR)

  12. Hugh L. Dryden's Career in Aviation and Space. No. 5; Monographs in Aerospace History

    NASA Technical Reports Server (NTRS)

    Gorn, Michael H.

    1996-01-01

    Hugh Latimer Dryden led a life rich in paradox. Born in obsurity, he attained international prominence. Indifferent to self-advancement, he nonetheless rose to the pinnacle of the aeronautics profession and subsequently assumed a pivotal role in the initial period of space exploration. Although a research scientist of the first order, he nurtured within himself a profoundly spiritual outlook.

  13. Form as a Complement to Content in Three of Langston Hughes' Poems

    ERIC Educational Resources Information Center

    Garber, Earlene D.

    1971-01-01

    The author analyzes 3 poems of Langston Hughes in order to demonstrate how a skillful use of the techniques available to a poet reinforce the logical structure which must be behind any serious poet's attempts to reproduce symbolically that which his mind has found significant in the non-linguistic environment. (Author/LF)

  14. Hugh Williamson: Soldier-Statesmen of the Constitution. A Bicentennial Series, No. 7.

    ERIC Educational Resources Information Center

    Army Center of Military History, Washington, DC.

    As a scholar of international renown, Hugh Williamson came into contact with some of the leading intellectuals of the patriot cause and their political ideas transformed him into an adroit politician and leader. This booklet on Williamson is one in a series on Revolutionary War soldiers who later signed the U.S. Constitution. The booklet reviews…

  15. The Science and Theory of Empirically Supported Treatments: A Response to Hughes.

    ERIC Educational Resources Information Center

    Sheridan, Susan M.

    2000-01-01

    Refocuses Hughes arguments, in target article, away from empirically supported treatments (ESTs) and back to science-practice links to services. Discusses the importance of theory in school psychology practice and research. Argues that theory alone is insufficient when considering services for children and families. Suggests the EST movement helps…

  16. IN MEMORIAM: Hugh P Kelly, 3 September 1931 - 29 June 1992

    NASA Astrophysics Data System (ADS)

    Hansen, Jørgen E.

    1993-01-01

    It is said that Racah was one of the few physicists who was able not only to read Hermann Weyl's book "The Theory of Groups and Quantum Mechanics" but also to understand enough to use it himself. Something similar applies to Hugh Kelly, who introduced the methods of Many-Body Perturbation Theory (MBPT), which was being developed by nuclear physicists like Keith Brueckner whom Hugh worked with as a post-doc, into atomic physics. Since atomic physics with its "known" forces is a perfect area in which to apply the methods of MBPT, it is clear that this would have happened sooner or later. Hugh Kelly's achievement is that it happened very early. Hugh's death this summer after a long battle with cancer is a great loss to atomic physics and to his many friends in the community. Hugh P Kelly got his PhD from the University of California at Berkeley in 1963 under the supervision of Kenneth Watson and in 1965 he was hired as assistant Professor at the University of Virginia. His appointment was to a large extent due to the support of M E Rose, also a nuclear physicist with interest in atoms as is clear from his book "Elementary Theory of Angular Momentum". Hugh remained at the University of Virginia for the rest of his life, over the years serving as Department Chairman, Faculty Dean and, during the last years, as University Provost, but throughout Hugh pursued his real passion which was Physics. It is a clear sign of his dedication that he is sole author on a large number of papers particularly of course in the early years when he alone was Atomic Theory in Charlottesville. Hugh contributed to many areas of atomic physics although early on photoionization became his favourite subject and the one where he made his main contribution: first for closed shell atoms, but later extending his techniques to open shell systems for which the normal MBPT techniques did not apply. Hugh had a good nose for finding projects that were of topical interest and many of his papers are

  17. Mrs. Hugh Dryden unveils the memorial to her late husband at center dedication, with center director

    NASA Technical Reports Server (NTRS)

    1976-01-01

    On March 26, 1976, the NASA Flight Research Center opened its doors to hundreds of guests for the dedication of the center in honor of Hugh Latimer Dryden. The dedication was very much a local event; following Center Director David Scott's opening remarks, the Antelope Valley High School's symphonic band played the national anthem. Invocation was given followed by recognition of the invited guests. Dr. Hugh Dryden, a man of total humility, received praise from all those present. Dryden, who died in 1965, had been a pioneering aeronautical scientist who became director of the National Advisory Committee for Aeronautics (NACA) in 1949 and then deputy administrator of the NACA's successor, NASA, in 1958. Very much interested in flight research, he had been responsible for establishing a permanent facility at the location later named in his honor. As Center Director David Scott looks on, Mrs. Hugh L. Dryden (Mary Libbie Travers) unveils the memorial to her husband at the dedication ceremony.On March 26, 1976, the NASA Flight Research Center opened its doors to hundreds of guests for the dedication of the center in honor of Hugh Latimer Dryden.

  18. "Comments on Greenhow, Robelia, and Hughes": Technologies that Facilitate Generating Knowledge and Possibly Wisdom

    ERIC Educational Resources Information Center

    Dede, Chris

    2009-01-01

    Greenhow, Robelia, and Hughes (2009) argue that Web 2.0 media are well suited to enhancing the education research community's purpose of generating and sharing knowledge. The author of this comment article first articulates how a research infrastructure with capabilities for communal bookmarking, photo and video sharing, social networking, wikis,…

  19. "Comments on Greenhow, Robelia, and Hughes": Expanding the New Literacies Conversation

    ERIC Educational Resources Information Center

    Leu, Donald J.; O'Byrne, W. Ian; Zawilinski, Lisa; McVerry, J. Greg; Everett-Cacopardo, Heidi

    2009-01-01

    Using a popularized notion such as Web 2.0 limits research efforts by employing a binary construct, one initially prompted by commercial concerns. Instead, the authors of this article, commenting on Greenhow, Robelia, and Hughes (2009), suggest that continuous, not dichotomous, change in the technologies of literacy and learning defines the…

  20. Medieval Theories of Education: Hugh of St Victor and John of Salisbury

    ERIC Educational Resources Information Center

    FitzGerald, Brian D.

    2010-01-01

    This paper offers an assessment of two 12th-century theories of education, Hugh of St Victor's "Didascalicon" and John of Salisbury's "Metalogicon", maintaining that their works both draw on traditional Christian teachings and respond to contemporary pedagogical interests in systematising knowledge and integrating classical learning. The two works…

  1. "Comments on Greenhow, Robelia, and Hughes": Toward a Creative Social Web for Learners and Teachers

    ERIC Educational Resources Information Center

    Zhang, Jianwei

    2009-01-01

    This article commenting on Greenhow, Robelia, and Hughes (2009) examines the potential strengths and weaknesses of Web 2.0 in supporting student collaborative creativity in light of sociocultural conditions of knowledge creation. Weaknesses and challenges are identified related to the embedded and dispersed representation of community knowledge,…

  2. Establishment of Oulenziella gen. nov. for Oulenzia bakeri (Hughes, 1962) (Acari: Winterschmidtiidae).

    PubMed

    Fan, Qing-Hai; George, Sherly; Li, Dong-Mei; Zhang, Zhi-Qiang

    2015-01-01

    A new genus, Oulenziella, is proposed for Oulenzia bakeri (Hughes, 1962), a species originally collected on jute (Corchorus sp., Malvaceae) from India. Oulenziella bakeri (Hughes, 1962) comb. nov. is re-described. Oulenzia gossypii Meyer & Rodrigues, 1965 collected from Gossypium sp. in Mozambique is considered a junior synonym of Oulenziella bakeri. The new genus differs from Oulenzia in having hT present on tibiae I and II, kT on tibia IV, la and ra on tarsus II, w and r on tarsus III, e and f on tarsi I-III; and by seta d on tarsi III and IV positioned at level of apical 1/8 to 1/6 of the segments. PMID:25947801

  3. Application of the Hughes-LIU algorithm to the 2-dimensional heat equation

    NASA Technical Reports Server (NTRS)

    Malkus, D. S.; Reichmann, P. I.; Haftka, R. T.

    1982-01-01

    An implicit explicit algorithm for the solution of transient problems in structural dynamics is described. The method involved dividing the finite elements into implicit and explicit groups while automatically satisfying the conditions. This algorithm is applied to the solution of the linear, transient, two dimensional heat equation subject to an initial condition derived from the soluton of a steady state problem over an L-shaped region made up of a good conductor and an insulating material. Using the IIT/PRIME computer with virtual memory, a FORTRAN computer program code was developed to make accuracy, stability, and cost comparisons among the fully explicit Euler, the Hughes-Liu, and the fully implicit Crank-Nicholson algorithms. The Hughes-Liu claim that the explicit group governs the stability of the entire region while maintaining the unconditional stability of the implicit group is illustrated.

  4. The 2016 Hughes Lecture: What's new in maternal morbidity and mortality?

    PubMed

    Arendt, K W

    2016-05-01

    Each year, the Board of Directors of the Society for Obstetric Anesthesia and Perinatology selects an individual to review a given year's published obstetric anesthesiology literature. This individual then produces a syllabus of the year's most influential publications, delivers the Ostheimer Lecture at the Society's annual meeting, the Hughes Lecture at the following year's Sol Shnider meeting, and writes corresponding review articles. This 2016 Hughes Lecture review article focuses specifically on the 2014 publications that relate to maternal morbidity and mortality. It begins by discussing the 2014 research that was published on severe maternal morbidity and maternal mortality in developed countries. This is followed by a discussion of specific coexisting diseases and specific causes of severe maternal mortality. The review ends with a discussion of worldwide maternal mortality and the 2014 publications that examined the successes and the shortfalls in the work to make childbirth safe for women throughout the entire world. PMID:26847944

  5. Symmetric bursting behaviors in the generalized FitzHugh-Nagumo model.

    PubMed

    Abbasian, A H; Fallah, H; Razvan, M R

    2013-08-01

    In the current paper, we have investigated the generalized FitzHugh-Nagumo model. We have shown that symmetric bursting behaviors of different types could be observed in this model with an appropriate recovery term. A modified version of this system is used to construct bursting activities. Furthermore, we have shown some numerical examples of delayed Hopf bifurcation and canard phenomenon in the symmetric bursting of super-Hopf/homoclinic type near its super-Hopf and homoclinic bifurcations, respectively. PMID:23801268

  6. A case report with Fitz-Hugh-Curtis syndrome, what does it mean?

    PubMed

    Muschart, X

    2015-10-01

    Fitz-Hugh-Curtis (FHC) syndrome, also known as acute perihepatitis, was discovered in 1930 and is a rare disorder characterised by inflammation of the peritoneum and the tissues surrounding the liver. This syndrome can arise as a potential complication from a pelvic inflammatory disease caused by Neisseria gonorrhoeae or Chlamydia trachomatis. This syndrome is not well known in the medical community and is often underdiagnosed. In this case report, we revisit FHC syndrome, particularly its noninvasive diagnosis and complications. PMID:26743574

  7. Everything to gain: Sir Hugh Cairns' treatment of central nervous system infection at Oxford and abroad.

    PubMed

    Chalif, Joshua I; Gillies, Martin J; Magdum, Shailendra A; Aziz, Tipu Z; Pereira, Erlick A C

    2013-02-01

    Antibiotics have revolutionized survival from central nervous system (CNS) infections. Sixty years after the death of Sir Hugh Cairns, we present archive material of historical interest from the Radcliffe Infirmary in Oxford from the time of his first trials of penicillin for CNS infection. We discuss Cairns' important wartime and subsequent contributions to antibiosis in CNS infection and include drawings by Audrey Arnott illustrating the surgical techniques used to treat abscesses at the time. PMID:23149954

  8. Wind-Tunnel Investigation of a Full-Scale Model of the Hughes MX-904 Missile

    NASA Technical Reports Server (NTRS)

    1950-01-01

    A wind-tunnel investigation has been conducted to determine the stability and control characteristics of a full-size model of the Hughes MX-904 missile. Aerodynamic characteristics of the complete model through moderate ranges of angles of attack and yaw, with an additional test made through an angle of attack of 180 degrees, are presented. The effects of horizontal tail deflection are also included.

  9. Selected results from LLNL-Hughes RAR for West Coast Scotland Experiment 1991

    SciTech Connect

    Lehman, S K; Johnston, B; Twogood, R; Wieting, M; Yorkey, T; Robey, H; Whelan, D; Nagele, R

    1993-01-05

    The joint US -- UK 1991 West Coast Scotland Experiment (WCSEX) was held in two locations. From July 5 to 12, 1991, in Upper Loch Linnhe, and from July 18 to July 26, 1991, in the Sound of Sleat. The LLNL-Hughes team fielded a fully polarimetric X-band hill-side real aperture radar to collect internal wave wake data. We present here a sample data set of the best radar runs.

  10. Homoclinic Orbits of the FitzHugh--Nagumo Equation: Bifurcations in the Full System

    NASA Astrophysics Data System (ADS)

    Guckenheimer, John; Kuehn, Christian

    2010-01-01

    This paper investigates travelling wave solutions of the FitzHugh-Nagumo equation from the viewpoint of fast-slow dynamical systems. These solutions are homoclinic orbits of a three dimensional vector field depending upon system parameters of the FitzHugh-Nagumo model and the wave speed. Champneys et al. [SIAM J. Appl. Dyn. Syst., 6 (2007), p. 663] observed sharp turns in the curves of homoclinic bifurcations in a two dimensional parameter space. This paper demonstrates numerically that these turns are located close to the intersection of two curves in the parameter space that locate nontransversal intersections of invariant manifolds of the three dimensional vector field. The relevant invariant manifolds in phase space are visualized. A geometrical model inspired by the numerical studies displays the sharp turns of the homoclinic bifurcations curves and yields quantitative predictions about multipulse and homoclinic orbits and periodic orbits that have not been resolved in the FitzHugh-Nagumo model. Further observations address the existence of canard explosions and mixed-mode oscillations.

  11. Traveling waves for the FitzHugh-Nagumo system on an infinite channel

    NASA Astrophysics Data System (ADS)

    Chen, Chao-Nien; Chen, Chiun-Chuan; Huang, Chih-Chiang

    2016-09-01

    We are concerned with the traveling wave solutions for the FitzHugh-Nagumo system on an infinite channel. Based on a variational formulation in which a non-local term depends on a parameter, the speed of a traveling wave can be selected out. Furthermore, to show the existence of a traveling wave solution with such a speed, we seek a minimizer subject to a constraint. In the way of solving the variational problem, we apply a truncation technique to the nonlocal term to obtain a minimizer located in a bounded invariant region.

  12. HARP model rotor test at the DNW. [Hughes Advanced Rotor Program

    NASA Technical Reports Server (NTRS)

    Dawson, Seth; Jordan, David; Smith, Charles; Ekins, James; Silverthorn, Lou

    1989-01-01

    Data from a test of a dynamically scaled model of the Hughes Advanced Rotor Program (HARP) bearingless model main rotor and 369K tail rotor are reported. The history of the HARP program and its goals are reviewed, and the main and tail rotor models are described. The test facilities and instrumentation are described, and wind tunnel test data are presented on hover, forward flight performance, and blade-vortex interaction. Performance data, acoustic data, and dynamic data from near field/far field and shear layer studies are presented.

  13. Optical residue addition and storage units using a Hughes liquid crystal light valve

    NASA Technical Reports Server (NTRS)

    Habiby, S. F.; Collins, S. A., Jr.

    1984-01-01

    Optical addition and storage units are described in this paper. These units are implemented using the Hughes Liquid Crystal Light Valve (LCLV) as a spatial light modulator using residue arithmetic for a numerical representation. The main hardware components of the design, besides the light valve, include an array of single-mode optical fibers that provide input information, a polarizing prism in combination with quarter-wave and half-wave retarders for residue arithmetic implementation in the adder, and a holographic array for spatial stability in the storage unit.

  14. Synchronization in heterogeneous FitzHugh-Nagumo networks with hierarchical architecture

    NASA Astrophysics Data System (ADS)

    Plotnikov, S. A.; Lehnert, J.; Fradkov, A. L.; Schöll, E.

    2016-07-01

    We study synchronization in heterogeneous FitzHugh-Nagumo networks. It is well known that heterogeneities in the nodes hinder synchronization when becoming too large. Here we develop a controller to counteract the impact of these heterogeneities. We first analyze the stability of the equilibrium point in a ring network of heterogeneous nodes. We then derive a sufficient condition for synchronization in the absence of control. Based on these results we derive the controller providing synchronization for parameter values where synchronization without control is absent. We demonstrate our results in networks with different topologies. Particular attention is given to hierarchical (fractal) topologies, which are relevant for the architecture of the brain.

  15. Synchronization in heterogeneous FitzHugh-Nagumo networks with hierarchical architecture.

    PubMed

    Plotnikov, S A; Lehnert, J; Fradkov, A L; Schöll, E

    2016-07-01

    We study synchronization in heterogeneous FitzHugh-Nagumo networks. It is well known that heterogeneities in the nodes hinder synchronization when becoming too large. Here we develop a controller to counteract the impact of these heterogeneities. We first analyze the stability of the equilibrium point in a ring network of heterogeneous nodes. We then derive a sufficient condition for synchronization in the absence of control. Based on these results we derive the controller providing synchronization for parameter values where synchronization without control is absent. We demonstrate our results in networks with different topologies. Particular attention is given to hierarchical (fractal) topologies, which are relevant for the architecture of the brain. PMID:27575119

  16. A "Queen of Hearts" trial of organ markets: why Scheper-Hughes's objections to markets in human organs fail.

    PubMed

    Taylor, J S

    2007-04-01

    Nancy Scheper-Hughes is one of the most prominent critics of markets in human organs. Unfortunately, Scheper-Hughes rejects the view that markets should be used to solve the current (and chronic) shortage of transplant organs without engaging with the arguments in favour of them. Scheper-Hughes's rejection of such markets is of especial concern, given her influence over their future, for she holds, among other positions, the status of an adviser to the World Health Organization (Geneva) on issues related to global transplantation. Given her influence, it is important that Scheper-Hughes's moral condemnation of markets in human organs be subject to critical assessment. Such critical assessment, however, has not generally been forthcoming. A careful examination of Scheper-Hughes's anti-market stance shows that it is based on serious mischaracterisations of both the pro-market position and the medical and economic realities that underlie it. In this paper, the author will expose and correct these mischaracterisations and, in so doing, show that her objections to markets in human organs are unfounded. PMID:17400616

  17. Stability of Traveling Pulses with Oscillatory Tails in the FitzHugh-Nagumo System

    NASA Astrophysics Data System (ADS)

    Carter, Paul; de Rijk, Björn; Sandstede, Björn

    2016-05-01

    The FitzHugh-Nagumo equations are known to admit fast traveling pulses that have monotone tails and arise as the concatenation of Nagumo fronts and backs in an appropriate singular limit, where a parameter ɛ goes to zero. These pulses are known to be nonlinearly stable with respect to the underlying PDE. Recently, the existence of fast pulses with oscillatory tails was proved for the FitzHugh-Nagumo equations. In this paper, we prove that the fast pulses with oscillatory tails are also nonlinearly stable. Similar to the case of monotone tails, stability is decided by the location of a nontrivial eigenvalue near the origin of the PDE linearization about the traveling pulse. We prove that this real eigenvalue is always negative. However, the expression that governs the sign of this eigenvalue for oscillatory pulses differs from that for monotone pulses, and we show indeed that the nontrivial eigenvalue in the monotone case scales with ɛ , while the relevant scaling in the oscillatory case is ɛ ^{2/3}.

  18. Short-time-delay limit of the self-coupled FitzHugh-Nagumo system

    NASA Astrophysics Data System (ADS)

    Erneux, Thomas; Weicker, Lionel; Bauer, Larissa; Hövel, Philipp

    2016-02-01

    We analyze the FitzHugh-Nagumo equations subject to time-delayed self-feedback in the activator variable. Parameters are chosen such that the steady state is stable independent of the feedback gain and delay τ . We demonstrate that stable large-amplitude τ -periodic oscillations can, however, coexist with a stable steady state even for small delays, which is mathematically counterintuitive. In order to explore how these solutions appear in the bifurcation diagram, we propose three different strategies. We first analyze the emergence of periodic solutions from Hopf bifurcation points for τ small and show that a subcritical Hopf bifurcation allows the coexistence of stable τ -periodic and stable steady-state solutions. Second, we construct a τ -periodic solution by using singular perturbation techniques appropriate for slow-fast systems. The theory assumes τ =O (1 ) and its validity as τ →0 is investigated numerically by integrating the original equations. Third, we develop an asymptotic theory where the delay is scaled with respect to the fast timescale of the activator variable. The theory is applied to the FitzHugh-Nagumo equations with threshold nonlinearity, and we show that the branch of τ -periodic solutions emerges from a limit point of limit cycles.

  19. Electrical Characterization of Hughes HCMP 1852D and RCA CDP1852D 8-bit, CMOS, I/O Ports

    NASA Technical Reports Server (NTRS)

    Stokes, R. L.

    1979-01-01

    Twenty-five Hughes HCMP 1852D and 25 RCA CDP1852D 8-bit, CMOS, I/O port microcircuits underwent electrical characterization tests. All electrical measurements were performed on a Tektronix S-3260 Test System. Before electrical testing, the devices were subjected to a 168-hour burn-in at 125 C with the inputs biased at 10V. Four of the Hughes parts became inoperable during testing. They exhibited functional failures and out-of-range parametric measurements after a few runs of the test program.

  20. Robustness of chimera states for coupled FitzHugh-Nagumo oscillators

    NASA Astrophysics Data System (ADS)

    Omelchenko, Iryna; Provata, Astero; Hizanidis, Johanne; Schöll, Eckehard; Hövel, Philipp

    2015-02-01

    Chimera states are complex spatio-temporal patterns that consist of coexisting domains of spatially coherent and incoherent dynamics. This counterintuitive phenomenon was first observed in systems of identical oscillators with symmetric coupling topology. Can one overcome these limitations? To address this question, we discuss the robustness of chimera states in networks of FitzHugh-Nagumo oscillators. Considering networks of inhomogeneous elements with regular coupling topology, and networks of identical elements with irregular coupling topologies, we demonstrate that chimera states are robust with respect to these perturbations and analyze their properties as the inhomogeneities increase. We find that modifications of coupling topologies cause qualitative changes of chimera states: additional random links induce a shift of the stability regions in the system parameter plane, gaps in the connectivity matrix result in a change of the multiplicity of incoherent regions of the chimera state, and hierarchical geometry in the connectivity matrix induces nested coherent and incoherent regions.

  1. The African-American grandmother in autobiographical works by Frederick Douglass, Langston Hughes, and Maya Angelou.

    PubMed

    Hill-Lubin, M A

    1991-01-01

    Using the autobiographies of Frederick Douglass, Langston Hughes, and Maya Angelou, this article demonstrates that the portrait of the African-American grandmother is one of action, involvement, hope, and dignity. In examining the works, we observe her functioning in three areas: as the preserver and most tenacious survivor of the African extended family; second, as repository and distributor of the family history, wisdom, and black lore; this role places her at the foundation of the Black, oral and written, literary and creative traditions; and third, as the retainer and transmitter of values and ideals that support and enhance her humanity, her family, and her community. This function emphasizes her spirituality. It is suggested that the grandmother, having played an important role in the growth, development, and artistic flowering of the autobiographer, can become a model and source of empowerment for future generations. PMID:1955211

  2. VizieR Online Data Catalog: Stromgren and Washington photometry in Boo I (Hughes+, 2014)

    NASA Astrophysics Data System (ADS)

    Hughes, J.; Wallerstein, G.; Dotter, A.; Geisler, D.

    2014-11-01

    As in HWB (Hughes et al., 2008AJ....136.2321H, Cat. J/AJ/136/2321), we observed the same central field in Bootes I (RA=14:00:06, DE=14.5 J2000) with the Apache Point Observatory's 3.5-m telescope, using the direct imaging SPIcam system. The detector is a backside-illuminated SITe TK2048E 2048x2048 pixel CCD with 24 micron pixels, which we binned (2x2), giving a plate scale of 0.28arcsec/pix, and a field of view (FOV) of 4.78x4.78arcmin2. The HWB data set for Bootes I was taken on 2007 March 19 (with a comparison field in M92 taken on 2007 May 24). We took 21 frames in Washington C, and Cousins R and I filters, with exposure time ranging from 1 to 1000s. (1 data file).

  3. Noise-sustained synchronization of electrically coupled FitzHugh-Nagumo networks under counterphase external forcing

    NASA Astrophysics Data System (ADS)

    Sánchez, Alejandro D.; Izús, Gonzalo G.

    2016-05-01

    We study the stochastic dynamics of two electrically coupled networks of excitable FitzHugh-Nagumo cells, each of them phase-repulsively linked to form a ring able to develop noise-sustained structures. All cells are submitted to Gaussian white noises with common intensity η, while each network is forced with opposite phase by an adiabatic subthreshold harmonic signal. In terms of the nonequilibrium potential of a four-cell reduced model we have interpreted the dynamics, explained the observed activation and synchronization of the structures, and calculated the optimal η level as a function of coupling strength between networks. The values obtained from the reduced model coincide in order of magnitude with those arising from numerical simulations of the full system.

  4. Fitz-Hugh-Curtis syndrome lacking typical characteristics of pelvic inflammatory disease.

    PubMed

    Mitaka, Hayato; Kitazono, Hidetaka; Deshpande, Gautam A; Hiraoka, Eiji

    2016-01-01

    A 23-year-old Japanese woman, previously a commercial sex worker, presented with a 2-day history of right upper quadrant (RUQ) abdominal pain, worse on deep inspiration. She had noticed increased vaginal discharge 2 months earlier and had developed dull, lower abdominal pain 3 weeks prior to presentation. Although pelvic examination and transvaginal ultrasonography revealed neither a tubal nor ovarian pathology, abdominal CT scan with contrast demonstrated early enhancement of the hepatic capsule, a finding pathognomonic for Fitz-Hugh-Curtis syndrome (FHCS). Cervical discharge PCR assay confirmed Chlamydia trachomatis infection. This case highlights that normal gynaecological evaluation may be insufficient to rule out FHCS, for which physicians should have a high index of suspicion when seeing any woman of reproductive age with RUQ pain. PMID:27335367

  5. Infrared ground-based astronomy with the Hughes 256 X 256 PtSi array

    NASA Technical Reports Server (NTRS)

    Fowler, A.; Joyce, R.; Gatley, I.; Gates, J.; Herring, J.

    1989-01-01

    It is shown that large format PtSi Schottky diode infrared arrays, the Hughes 256 X 256 hybrid Schottky array in particular, are competitive alternatives to the smaller format photovoltaic arrays for ground-based astronomy. The modest quantum efficiency of the PtSi compared to the photovoltaic devices is more than compensated for by the larger format. The use of hybrid technology yields effective fill factors of nearly 100 percent, and the low dark current, noise, excellent imaging characteristics, cost, and solid nitrogen operating temperature add to the effectiveness of this array for ground-based imaging. In addition to discussing the characteristics of this array, researchers present laboratory test data and astronomical results achieved at Kitt Peak.

  6. Between Thermodynamics and Thermometry: The Life and Scientific Achievements of Hugh Longbourne Callendar

    NASA Astrophysics Data System (ADS)

    Reif-Acherman, Simón

    2015-09-01

    This paper considers Hugh Longbourne Callendar's role in the developments of thermometry and thermodynamics during the last decades of the nineteenth century and the first decades of the twentieth century. Callendar applied the physical principle of the variation of electrical conductivity with temperature to the construction of the resistance thermometer. These works opened the door to his later successful studies on steam properties, which led him to become one of the pioneers in the determination of a set of consistent, accurate, and standardized thermodynamic values for water. The article briefly reviews the state of the art of both subjects before Callendar's contributions and some of the consequences of his work for the later development of those disciplines. Callendar's qualities as experimenter, theoretical scientist, and as a human being, are also discussed.

  7. Parameter estimation of the FitzHugh-Nagumo model using noisy measurements for membrane potential.

    PubMed

    Che, Yanqiu; Geng, Li-Hui; Han, Chunxiao; Cui, Shigang; Wang, Jiang

    2012-06-01

    This paper proposes an identification method to estimate the parameters of the FitzHugh-Nagumo (FHN) model for a neuron using noisy measurements available from a voltage-clamp experiment. By eliminating an unmeasurable recovery variable from the FHN model, a parametric second order ordinary differential equation for the only measurable membrane potential variable can be obtained. In the presence of the measurement noise, a simple least squares method is employed to estimate the associated parameters involved in the FHN model. Although the available measurements for the membrane potential are contaminated with noises, the proposed identification method aided by wavelet denoising can also give the FHN model parameters with satisfactory accuracy. Finally, two simulation examples demonstrate the effectiveness of the proposed method. PMID:22757546

  8. Preliminary test results from a telescope of Hughes pixel arrays at FNAL

    SciTech Connect

    Jernigan, J.G.; Arens, J.; Vezie, D. . Space Sciences Lab.); Shapiro, S.L. ); Collins, T. ); Krider, J. ); Skubic, P. )

    1992-09-01

    In December of 1991 three silicon hybrid pixel detectors each having 2.56 [times] 2.56 pixels 30 [mu]m square, made by the Hughes Aircraft Company, were placed in a high energy muon beam at the Fermi National Accelerator Laboratory. Straight tracks were recorded in these detectors at angles to the normal to the plane of the silicon ranging from 0 to 45[degrees]. In this note, preliminary results are presented on the straight through tracks, i.e., those passing through the telescope at normal incidence. Pulse height data, signal-to-noise data, and preliminary straight line fits to the data resulting in residual distributions are presented. Preliminary calculations show spatial resolution of less than 5 [mu]m in two dimensions.

  9. Preliminary test results from a telescope of Hughes pixel arrays at FNAL

    SciTech Connect

    Jernigan, J.G.; Arens, J.; Vezie, D.; Shapiro, S.L.; Collins, T.; Krider, J.; Skubic, P.

    1992-09-01

    In December of 1991 three silicon hybrid pixel detectors each having 2.56 {times} 2.56 pixels 30 {mu}m square, made by the Hughes Aircraft Company, were placed in a high energy muon beam at the Fermi National Accelerator Laboratory. Straight tracks were recorded in these detectors at angles to the normal to the plane of the silicon ranging from 0 to 45{degrees}. In this note, preliminary results are presented on the straight through tracks, i.e., those passing through the telescope at normal incidence. Pulse height data, signal-to-noise data, and preliminary straight line fits to the data resulting in residual distributions are presented. Preliminary calculations show spatial resolution of less than 5 {mu}m in two dimensions.

  10. Pretext, Context, Subtext: Textual Power in the Writing of Langston Hughes, Richard Wright, and Martin Luther King, Jr.

    ERIC Educational Resources Information Center

    Bogumil, Mary L.; Molino, Michael R.

    1990-01-01

    Studies verbal pretexts, social subtexts, and interpretive contexts of works by Langston Hughes, Richard Wright, and Martin Luther King, Jr. Notes that cultural repression is propagated (and dispelled) in part through the power of language. Notes that these texts are relevant for teaching textual power in hopes of affecting social change. (RS)

  11. Dynamical System Approach for Edge Detection Using Coupled FitzHugh-Nagumo Neurons.

    PubMed

    Li, Shaobai; Dasmahapatra, Srinandan; Maharatna, Koushik

    2015-12-01

    The prospect of emulating the impressive computational capabilities of biological systems has led to considerable interest in the design of analog circuits that are potentially implementable in very large scale integration CMOS technology and are guided by biologically motivated models. For example, simple image processing tasks, such as the detection of edges in binary and grayscale images, have been performed by networks of FitzHugh-Nagumo-type neurons using the reaction-diffusion models. However, in these studies, the one-to-one mapping of image pixels to component neurons makes the size of the network a critical factor in any such implementation. In this paper, we develop a simplified version of the employed reaction-diffusion model in three steps. In the first step, we perform a detailed study to locate this threshold using continuous Lyapunov exponents from dynamical system theory. Furthermore, we render the diffusion in the system to be anisotropic, with the degree of anisotropy being set by the gradients of grayscale values in each image. The final step involves a simplification of the model that is achieved by eliminating the terms that couple the membrane potentials of adjacent neurons. We apply our technique to detect edges in data sets of artificially generated and real images, and we demonstrate that the performance is as good if not better than that of the previous methods without increasing the size of the network. PMID:26276989

  12. Principles and Practices Fostering Inclusive Excellence: Lessons from the Howard Hughes Medical Institute's Capstone Institutions.

    PubMed

    DiBartolo, Patricia Marten; Gregg-Jolly, Leslie; Gross, Deborah; Manduca, Cathryn A; Iverson, Ellen; Cooke, David B; Davis, Gregory K; Davidson, Cameron; Hertz, Paul E; Hibbard, Lisa; Ireland, Shubha K; Mader, Catherine; Pai, Aditi; Raps, Shirley; Siwicki, Kathleen; Swartz, Jim E

    2016-01-01

    Best-practices pedagogy in science, technology, engineering, and mathematics (STEM) aims for inclusive excellence that fosters student persistence. This paper describes principles of inclusivity across 11 primarily undergraduate institutions designated as Capstone Awardees in Howard Hughes Medical Institute's (HHMI) 2012 competition. The Capstones represent a range of institutional missions, student profiles, and geographical locations. Each successfully directed activities toward persistence of STEM students, especially those from traditionally underrepresented groups, through a set of common elements: mentoring programs to build community; research experiences to strengthen scientific skill/identity; attention to quantitative skills; and outreach/bridge programs to broaden the student pool. This paper grounds these program elements in learning theory, emphasizing their essential principles with examples of how they were implemented within institutional contexts. We also describe common assessment approaches that in many cases informed programming and created traction for stakeholder buy-in. The lessons learned from our shared experiences in pursuit of inclusive excellence, including the resources housed on our companion website, can inform others' efforts to increase access to and persistence in STEM in higher education. PMID:27562960

  13. On Propagation of Excitation Waves in Moving Media: The FitzHugh-Nagumo Model

    PubMed Central

    Ermakova, Elena A.; Shnol, Emmanuil E.; Panteleev, Mikhail A.; Butylin, Andrey A.; Volpert, Vitaly; Ataullakhanov, Fazoil I.

    2009-01-01

    Background Existence of flows and convection is an essential and integral feature of many excitable media with wave propagation modes, such as blood coagulation or bioreactors. Methods/Results Here, propagation of two-dimensional waves is studied in parabolic channel flow of excitable medium of the FitzHugh-Nagumo type. Even if the stream velocity is hundreds of times higher that the wave velocity in motionless medium (), steady propagation of an excitation wave is eventually established. At high stream velocities, the wave does not span the channel from wall to wall, forming isolated excited regions, which we called “restrictons”. They are especially easy to observe when the model parameters are close to critical ones, at which waves disappear in still medium. In the subcritical region of parameters, a sufficiently fast stream can result in the survival of excitation moving, as a rule, in the form of “restrictons”. For downstream excitation waves, the axial portion of the channel is the most important one in determining their behavior. For upstream waves, the most important region of the channel is the near-wall boundary layers. The roles of transversal diffusion, and of approximate similarity with respect to stream velocity are discussed. Conclusions These findings clarify mechanisms of wave propagation and survival in flow. PMID:19212435

  14. Uranium hydrogeochemical and stream sediment reconnaissance of the Hughes NTMS quadrangle, Alaska

    SciTech Connect

    D'Andrea, R.F. Jr.; Zinkl, R.J.; Shettel, D.L. Jr.; Langfeldt, S.L.; Youngquist, C.A.

    1981-09-01

    This report presents results of a Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Hughes NTMS quadrangle, Alaska. In addition to this abbreviated data release, more complete data are available to the public in machine-readable form through the Grand Junction Office Information System at Oak Ridge National Laboratory (ORNL). Presented in this data release are location data, field analyses, and laboratory analyses of several different sample media. For the sake of brevity, many field site observations have not been included in this volume. These data are, however, available on the magnetic tape. Appendices A and B describe the sample media and summarize the analytical results for each medium. The data were subdivided by one of the Los Alamos National Laboratory (LANL) sorting programs of Zinkl and others into groups of stream sediment and lake sediment samples. For each group which contains a sufficient number of observations, statistical tables, tables of raw data, and 1:1000000 scale maps of pertinent elements have been included in this report. In addition, maps showing results of multivariate statistical analyses have been included. Further information about the HSSR program in general, or about the LANL portion of the program in particular, can be obtained in quarterly or semiannual program progress reports on open-file at DOE's Technical Library in Grand Junction. Information about the field and analytical procedures used by LANL during sample collection and analysis may be found in any HSSR data release prepared by the LANL and will not be included in this report.

  15. Augmented moment method for stochastic ensembles with delayed couplings. II. FitzHugh-Nagumo model

    NASA Astrophysics Data System (ADS)

    Hasegawa, Hideo

    2004-08-01

    Dynamics of FitzHugh-Nagumo (FN) neuron ensembles with time-delayed couplings subject to white noises, has been studied by using both direct simulations and a semianalytical augmented moment method (AMM) which has been proposed in a preceding paper [

    H. Hasegawa, Phys. Rev. E 70, 021911 (2004)
    ]. For N -unit FN neuron ensembles, AMM transforms original 2N -dimensional stochastic delay differential equations (SDDEs) to infinite-dimensional deterministic DEs for means and correlation functions of local and global variables. Infinite-order recursive DEs are terminated at the finite level m in the level- m AMM ( AMMm ) , yielding 8(m+1) -dimensional deterministic DEs. When a single spike is applied, the oscillation may be induced if parameters of coupling strength, delay, noise intensity and/or ensemble size are appropriate. Effects of these parameters on the emergence of the oscillation and on the synchronization in FN neuron ensembles have been studied. The synchronization shows the fluctuation-induced enhancement at the transition between nonoscillating and oscillating states. Results calculated by AMM5 are in fairly good agreement with those obtained by direct simulations.

  16. Characterization of solar cells for space applications. Volume 13: Electrical characteristics of Hughes LPE gallium arsenide solar cells as a function of intensity and temperature

    NASA Technical Reports Server (NTRS)

    Anspaugh, B. E.; Beckert, D. M.; Downing, R. G.; Miyahira, T. F.; Weiss, R. S.

    1980-01-01

    Electrical characteristics of Hughes Liquid phase epitaxy, P/N gallium aluminum arsenide solar cells are presented in graphical and tabular format as a function of solar illumination intensity and temperature.

  17. OBITUARY: Eur.Ing. Professor David Dew-Hughes in memoriam

    NASA Astrophysics Data System (ADS)

    Campbell, Archie; Dew-Hughes, Denise; Donaldson, Gordon; Palmer, Richard

    2007-06-01

    We regret to announce the death of David Dew-Hughes, the second Honorary Editor of Superconductor Science and Technology, in Autumn 2006. He was born in Manchester, the eldest of three children, attended Manchester Grammar School and took his first degree in metallurgy at Birmingham, before undertaking a Doctorate of Engineering at Yale University. After initial work for IBM on semiconductors, he returned to England as a lecturer in metallurgy at Cambridge University. There he devoted his career to superconductivity long before it became fashionable, starting a group on the properties of what we now know as type II materials, with his students Jan Evetts, Archie Campbell and Anant Narlikar. Between them they paved the way to our understanding of the magnetic vortex properties of these materials, and thus to the development of modern practical materials for superconducting magnets. Eur.Ing. Professor David Dew-Hughes 1932-2006 In 1965 he became a founding Senior Lecturer in physics at Lancaster University, moving to Brookhaven National Laboratory in 1974. His final academic post was in engineering science at Oxford University where he also held a University College Tutorial Fellowship. As long ago as 1971 David wrote an authoritative review for Reports on Progress in Physics on 'The metallurgical enhancement of type II superconductors'. Following the discovery of high-Tc superconductivity, IOP Publishing launched Superconductor Science and Technology in 1988 and he was a founder member of its Editorial Board. When Jan Evetts retired as Honorary Editor in 1992, David was the natural choice as his successor. He served a five year term and remained on the Board as Deputy Editor until the end of 2000. To mark the 10th anniversary of high-temperature superconductivity in 1997, David edited a special issue of Superconductor Science and Technology in which past and present members of the Editorial Board contributed reviews of their specialities. He noted that at that time

  18. Parameters analysis of FitzHugh-Nagumo model for a reliable simulation.

    PubMed

    Xu, B; Binczak, S; Jacquir, S; Pont, O; Yahia, H

    2014-01-01

    Derived from the pioneer ionic Hodgkin-Huxley model and due to its simplicity and richness from a point view of nonlinear dynamics, the FitzHugh-Nagumo model (FHN) is one of the most successful simplified neuron / cardiac cell model. There exist many variations of the original FHN model. Though these FHN type models help to enrich the dynamics of the FHN model, the parameters used in these models are often in biased conditions. The related results would be questionable. So, in this study, the aim is to find the parameter thresholds for one of the commonly used FHN model in order to provide a better simulation environment. The results showed at first that inappropriate time step and integration tolerance in numerical solution of FHN model can give some biased results which would make some publications questionable. Then the thresholds of parameters α, γ and ε are presented. α controls the global dynamics of FHN. α > 0, the cell is in refractory mode; α <; 0, the cell is excitable. ε controls the main morphology of the action potential generated and has a relation with the period (P = 3.065 × αα,γ(-0.8275)+ 4.397). To show oscillations of relaxation with FHN, ε should be smaller than 0.0085. 7 influences barely action potential, it showed linear relationship with the period and duration of action potential. Even though α <; 0.1, ε <; 0.0085, there is no definite threshold for γ, smaller values are recommended. PMID:25570951

  19. Kinematic analysis of melange fabrics: Examples and applications from the McHugh Complex, Kenai Peninsula, Alaska

    USGS Publications Warehouse

    Kusky, T.M.; Bradley, D.C.

    1999-01-01

    Permian to Cretaceous melange of the McHugh Complex on the Kenai Peninsula, south-central Alaska includes blocks and belts of graywacke, argillite, limestone, chert, basalt, gabbro, and ultramafic rocks, intruded by a variety of igneous rocks. An oceanic plate stratigraphy is repeated hundreds of times across the map area, but most structures at the outcrop scale extend lithological layering. Strong rheological units occur as blocks within a matrix that flowed around the competent blocks during deformation, forming broken formation and melange. Deformation was noncoaxial, and disruption of primary layering was a consequence of general strain driven by plate convergence in a relatively narrow zone between the overriding accretionary wedge and the downgoing, generally thinly sedimented oceanic plate. Soft-sediment deformation processes do not appear to have played a major role in the formation of the melange. A model for deformation at the toe of the wedge is proposed in which layers oriented at low angles to ??1 are contracted in both the brittle and ductile regimes, layers at 30-45??to ??1 are extended in the brittle regime and contracted in the ductile regime, and layers at angles greater than 45??to ??1 are extended in both the brittle and ductile regimes. Imbrication in thrust duplexes occurs at deeper levels within the wedge. Many structures within melange of the McHugh Complex are asymmetric and record kinematic information consistent with the inferred structural setting in an accretionary wedge. A displacement field for the McHugh Complex on the lower Kenai Peninsula includes three belts: an inboard belt of Late Triassic rocks records west-to-east-directed slip of hanging walls, a central belt of predominantly Early Jurassic rocks records north-south directed displacements, and Early Cretaceous rocks in an outboard belt preserve southwest-northeast directed slip vectors. Although precise ages of accretion are unknown, slip directions are compatible with

  20. Kinematic analysis of mélange fabrics: examples and applications from the McHugh Complex, Kenai Peninsula, Alaska

    NASA Astrophysics Data System (ADS)

    Kusky, Timothy M.; Bradley, Dwight C.

    1999-12-01

    Permian to Cretaceous mélange of the McHugh Complex on the Kenai Peninsula, south-central Alaska includes blocks and belts of graywacke, argillite, limestone, chert, basalt, gabbro, and ultramafic rocks, intruded by a variety of igneous rocks. An oceanic plate stratigraphy is repeated hundreds of times across the map area, but most structures at the outcrop scale extend lithological layering. Strong rheological units occur as blocks within a matrix that flowed around the competent blocks during deformation, forming broken formation and mélange. Deformation was noncoaxial, and disruption of primary layering was a consequence of general strain driven by plate convergence in a relatively narrow zone between the overriding accretionary wedge and the downgoing, generally thinly sedimented oceanic plate. Soft-sediment deformation processes do not appear to have played a major role in the formation of the mélange. A model for deformation at the toe of the wedge is proposed in which layers oriented at low angles to σ1 are contracted in both the brittle and ductile regimes, layers at 30-45° to σ1 are extended in the brittle regime and contracted in the ductile regime, and layers at angles greater than 45° to σ1 are extended in both the brittle and ductile regimes. Imbrication in thrust duplexes occurs at deeper levels within the wedge. Many structures within mélange of the McHugh Complex are asymmetric and record kinematic information consistent with the inferred structural setting in an accretionary wedge. A displacement field for the McHugh Complex on the lower Kenai Peninsula includes three belts: an inboard belt of Late Triassic rocks records west-to-east-directed slip of hanging walls, a central belt of predominantly Early Jurassic rocks records north-south directed displacements, and Early Cretaceous rocks in an outboard belt preserve southwest-northeast directed slip vectors. Although precise ages of accretion are unknown, slip directions are compatible with

  1. Resistance Tests of a 1/16 Size Model of the Hughes-kaiser Flying Boat, NACA Model 183

    NASA Technical Reports Server (NTRS)

    Posner, Jack; Woodward, David R.; Olson, Roland E.

    1944-01-01

    Tank tests were made of a hull model of the Hughes-Kaiser cargo airplane for estimates of take-off performance and maximum gross load for take-off. At hump speeds, with the model free to trim, the trim and resistance were high, which resulted in a load-resistance ratio of approximately 4.0 for a gross load coefficient of 0.75. With a 4000,000-lb load, the full size craft may take off in 69 sec over a distance of 5600 ft.

  2. A “Queen of Hearts” trial of organ markets: why Scheper‐Hughes's objections to markets in human organs fail

    PubMed Central

    Taylor, J S

    2007-01-01

    Nancy Scheper‐Hughes is one of the most prominent critics of markets in human organs. Unfortunately, Scheper‐Hughes rejects the view that markets should be used to solve the current (and chronic) shortage of transplant organs without engaging with the arguments in favour of them. Scheper‐Hughes's rejection of such markets is of especial concern, given her influence over their future, for she holds, among other positions, the status of an adviser to the World Health Organization (Geneva) on issues related to global transplantation. Given her influence, it is important that Scheper‐Hughes's moral condemnation of markets in human organs be subject to critical assessment. Such critical assessment, however, has not generally been forthcoming. A careful examination of Scheper‐Hughes's anti‐market stance shows that it is based on serious mischaracterisations of both the pro‐market position and the medical and economic realities that underlie it. In this paper, the author will expose and correct these mischaracterisations and, in so doing, show that her objections to markets in human organs are unfounded. PMID:17400616

  3. Mixed-mode oscillations and slow manifolds in the self-coupled FitzHugh-Nagumo system

    NASA Astrophysics Data System (ADS)

    Desroches, Mathieu; Krauskopf, Bernd; Osinga, Hinke M.

    2008-03-01

    We investigate the organization of mixed-mode oscillations in the self-coupled FitzHugh-Nagumo system. These types of oscillations can be explained as a combination of relaxation oscillations and small-amplitude oscillations controlled by canard solutions that are associated with a folded singularity on a critical manifold. The self-coupled FitzHugh-Nagumo system has a cubic critical manifold for a range of parameters, and an associated folded singularity of node-type. Hence, there exist corresponding attracting and repelling slow manifolds that intersect in canard solutions. We present a general technique for the computation of two-dimensional slow manifolds (smooth surfaces). It is based on a boundary value problem approach where the manifolds are computed as one-parameter families of orbit segments. Visualization of the computed surfaces gives unprecedented insight into the geometry of the system. In particular, our techniques allow us to find and visualize canard solutions as the intersection curves of the attracting and repelling slow manifolds.

  4. A semi-alternating direction method for a 2-D fractional FitzHugh-Nagumo monodomain model on an approximate irregular domain

    NASA Astrophysics Data System (ADS)

    Liu, F.; Zhuang, P.; Turner, I.; Anh, V.; Burrage, K.

    2015-07-01

    A FitzHugh-Nagumo monodomain model has been used to describe the propagation of the electrical potential in heterogeneous cardiac tissue. In this paper, we consider a two-dimensional fractional FitzHugh-Nagumo monodomain model on an irregular domain. The model consists of a coupled Riesz space fractional nonlinear reaction-diffusion model and an ordinary differential equation, describing the ionic fluxes as a function of the membrane potential. Second, we use a decoupling technique and focus on solving the Riesz space fractional nonlinear reaction-diffusion model. A novel spatially second-order accurate semi-implicit alternating direction method (SIADM) for this model on an approximate irregular domain is proposed. Third, stability and convergence of the SIADM are proved. Finally, some numerical examples are given to support our theoretical analysis and these numerical techniques are employed to simulate a two-dimensional fractional FitzHugh-Nagumo model on both an approximate circular and an approximate irregular domain.

  5. Parameter dependence of stochastic resonance in the FitzHugh-Nagumo neuron model driven by trichotomous noise

    NASA Astrophysics Data System (ADS)

    Zhang, Huiqing; Yang, Tingting; Xu, Yong; Xu, Wei

    2015-05-01

    We investigate the stochastic resonance in a FitzHugh-Nagumo neuron model driven by trichotomous noise and periodic signal, focusing on the dependence of properties of stochastic resonance (SR) on system parameters. The stochastic resonance is shown through several different measures: system response, power spectrum and signal-to-noise ratio. Firstly, it is found that whether the neuron can fire regularly depends on the cooperative effect of the signal frequency and the signal amplitude for the deterministic FHN neuron. When the forcing amplitude alone is insufficient to cause the neuron firing, the neuron can fire with the addition of trichotomous noise. Secondly, we show that power spectrum is maximized for an optimal value of the noise correlation time, which is the signature of SR. Finally, from studying SNR, the specific system parameters are found to optimize the SR phenomenon.

  6. Suppression of noise in FitzHugh-Nagumo model driven by a strong periodic signal [rapid communication

    NASA Astrophysics Data System (ADS)

    Pankratova, Evgeniya V.; Polovinkin, Andrey V.; Spagnolo, Bernardo

    2005-08-01

    The response time of a neuron in the presence of a strong periodic driving in the stochastic FitzHugh Nagumo model is investigated. We analyze two cases: (i) the variable that corresponds to membrane potential is subjected to fluctuations, and (ii) the recovery variable associated with the refractory properties of a neuron is noisy. The influence of noise sources on the delay of the response of a neuron is analyzed. In both cases we observe a resonant activation-like phenomenon and suppression of noise: the negative effect of fluctuations on the process of spike generation is minimal near the resonance region. The phenomenon of noise enhanced stability is also observed in both cases. The role of the initial phase of the periodic driving is examined.

  7. Implementation of the Golla-Hughes-McTavish (GHM) method for viscoelastic materials using MATLAB and NASTRAN

    NASA Astrophysics Data System (ADS)

    Gibson, Warren C.; Smith, Christian A.; McTavish, Donald J.

    1995-05-01

    Representation of frequency-dependent viscoelastic material properties has long been problematical in the frequency domain and especially in the time domain. The method of Golla, Hughes, and McTavish (GHM) addresses this problem with a Laplace-domain model of the complex material modulus, in which a number of parameters are determined by curve- fitting to experimental data. The result is well suited to finite element formulations because the equations of motion retain the familiar second-order, constant-coefficient form, at the expense of some extra scalar degrees of freedom. This paper reports on an implementation of GHM in MATLAB, using FEM data imported from NASTRAN. Sample problems demonstrate the efficacy and practicality of the method.

  8. PUBLIC AFFAIRS DIRECTOR HUGH HARRIS SPEAKS AT THE APOLLO/SATURN V CENTER RIBBON-CUTTING CEREMONY

    NASA Technical Reports Server (NTRS)

    1996-01-01

    NASA/KSC Public Affairs Director Hugh W. Harris gives the welcome and introductions at the ribbon-cutting ceremony to officially open the new Apollo/Saturn V Center, part of the Kennedy Space Center Visitor Center. The 100,000- square-foot facility includes two theaters, various exhibits and an Apollo-era Saturn V rocket, which formerly was on display outside the Vehicle Assembly Building and is one of only three moon rockets remaining in existence. The new center is located off the Kennedy Parkway at the Banana Creek launch viewing site.

  9. Positive Intervention for Serious Behavior Problems: Best Practices in Implementing the Hughes Bill (A.B. 2586) and the Positive Behavioral Intervention Regulations.

    ERIC Educational Resources Information Center

    Wright, Diana Browning; Gurman, Harvey B.

    This manual provides guidelines to educators attempting to comply with California's Hughes Bill, which is intended to ensure the rights of special education students to have positive behavioral intervention plans designed to bring lasting behavioral changes without interventions that cause pain or trauma. An introductory chapter summarizes the…

  10. A dedication: Hugh A. Daubeny (1931-2015): A wonderful small fruit legacy including a critical driver of the Rubus-Ribes Symposia.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Dr. Hugh Daubeny had a productive career as a strawberry and red raspberry breeder with Agriculture and Agri-Food Canada. As part of that career, he could be considered the “patron saint” of the Rubus-Ribes symposia as he was instrumental in the early development, hosted two symposia, attended all o...

  11. An Account of the Founding of H.M. Inspectorate of Mines and the Work of the First Inspector Hugh Seymour Tremenheere

    PubMed Central

    Edmonds, O. P.; Edmonds, E. L.

    1963-01-01

    This paper refers briefly to the adverse environmental conditions in mines in the middle of the nineteenth century and the first attempts made by the central government to remedy them. The life, character, and contribution of Hugh Seymour Tremenheere, the first inspector, is described in some detail. Images PMID:14046158

  12. Soldado virus (Hughes group) from Ornithodoros (Alectorobius) capensis (Ixodoidea: Argasidae) infesting Sooty Tern colonies in the Seychelles, Indian Ocean.

    PubMed

    Converse, J D; Hoogstraal, H; Moussa, M I; Feare, C J; Kaiser, M N

    1975-11-01

    In the summer of 1973, about 5,000 pairs of adult Sooty Terns abandoned a specific part of their breeding grounds on Bird Island in the Seychelles. Incubated eggs and newly hatched chicks were left unattended and the area was not reoccupied in 1974. Numerous Ornithodoros (Alectorobius) capensis occurred in the deserted part in both years, but few or none in the area where bird breeding was normal. Persons visiting the deserted area were bitten by many ticks and experienced severe pruritus persisting for several days. In 1973 and 1974, Soldado (SOL) virus (Hughes serogroup) was isolated from the ticks taken on Bird Island from the ground and from sick and not visibly sick chicks of the Sooty Tern, and also from nests of the Blue-faced Booby on Des Noeufs Island. When ticks from the ground and from Sooty Tern chicks were fed on domestic chicks, they transmitted SOL virus and caused the death of their hosts. Soldado virus was previously known only from O. (A.) capensis-group ticks infesting marine bird colonies on islands off Trinidad and in a lake in Ethiopia. We have also isolated SOL virus from another species of the subgenus Alectorobius from Wales, Great Britain. Marine bird migrations undoubtedly account for the remarkably extensive distribution of SOL virus. The role of migration in the mechanisms and dynamics of tick and virus distribution, and the comparative growth cycles of Hughes serogroup viruses in Ornithodoros ticks, remain to be determined for a better epidemiological understanding of this agent. PMID:1200252

  13. An MMIC implementation of FitzHugh-Nagumo neurons using a resonant tunneling diode nonlinear transmission line

    NASA Astrophysics Data System (ADS)

    Klofaï, Yerima; Essimbi, B. Z.; Jäger, D.

    2015-02-01

    In this paper the electronic implementation of FitzHugh-Nagumo (F-N) neurons via monolithic microwave integrated circuits (MMIC) based upon a resonant tunneling diode (RTD) nonlinear transmission line (NLTL) using a coplanar waveguide (CPW) is considered. The goals are twofold. In the framework of electrical equivalent circuit emulating nonlinear active wave propagation effects, it is shown, on one hand, how different physical mechanisms are responsible for the time evolution of given input signals. A key result is that this medium supports stable and stationary pulse propagation that is only determined by the parameters of the RTD-NLTL and is independent of the boundary conditions. On the other hand, the influence of specific line elements on the output signal waveform is discussed in a most systematic manner. This leads, for the first time, to a more physical interpretation of the properties of the RTD-NLTL and, furthermore, to interesting technical applications at multi-GHz frequencies and on picosecond time scales. As a result, physically based ways are elucidated regarding how the technical design of those compact neuromorphic electrical circuits can be optimized by numerical simulations and performed using standard MMIC technologies.

  14. Synchronization of Coupled Different Chaotic FitzHugh-Nagumo Neurons with Unknown Parameters under Communication-Direction-Dependent Coupling

    PubMed Central

    Iqbal, Muhammad; Rehan, Muhammad; Khaliq, Abdul; Rehman, Saeed-ur-; Hong, Keum-Shik

    2014-01-01

    This paper investigates the chaotic behavior and synchronization of two different coupled chaotic FitzHugh-Nagumo (FHN) neurons with unknown parameters under external electrical stimulation (EES). The coupled FHN neurons of different parameters admit unidirectional and bidirectional gap junctions in the medium between them. Dynamical properties, such as the increase in synchronization error as a consequence of the deviation of neuronal parameters for unlike neurons, the effect of difference in coupling strengths caused by the unidirectional gap junctions, and the impact of large time-delay due to separation of neurons, are studied in exploring the behavior of the coupled system. A novel integral-based nonlinear adaptive control scheme, to cope with the infeasibility of the recovery variable, for synchronization of two coupled delayed chaotic FHN neurons of different and unknown parameters under uncertain EES is derived. Further, to guarantee robust synchronization of different neurons against disturbances, the proposed control methodology is modified to achieve the uniformly ultimately bounded synchronization. The parametric estimation errors can be reduced by selecting suitable control parameters. The effectiveness of the proposed control scheme is illustrated via numerical simulations. PMID:25101140

  15. Principles and Practices Fostering Inclusive Excellence: Lessons from the Howard Hughes Medical Institute’s Capstone Institutions

    PubMed Central

    DiBartolo, Patricia Marten; Gregg-Jolly, Leslie; Gross, Deborah; Manduca, Cathryn A.; Iverson, Ellen; Cooke, David B.; Davis, Gregory K.; Davidson, Cameron; Hertz, Paul E.; Hibbard, Lisa; Ireland, Shubha K.; Mader, Catherine; Pai, Aditi; Raps, Shirley; Siwicki, Kathleen; Swartz, Jim E.

    2016-01-01

    Best-practices pedagogy in science, technology, engineering, and mathematics (STEM) aims for inclusive excellence that fosters student persistence. This paper describes principles of inclusivity across 11 primarily undergraduate institutions designated as Capstone Awardees in Howard Hughes Medical Institute’s (HHMI) 2012 competition. The Capstones represent a range of institutional missions, student profiles, and geographical locations. Each successfully directed activities toward persistence of STEM students, especially those from traditionally underrepresented groups, through a set of common elements: mentoring programs to build community; research experiences to strengthen scientific skill/identity; attention to quantitative skills; and outreach/bridge programs to broaden the student pool. This paper grounds these program elements in learning theory, emphasizing their essential principles with examples of how they were implemented within institutional contexts. We also describe common assessment approaches that in many cases informed programming and created traction for stakeholder buy-in. The lessons learned from our shared experiences in pursuit of inclusive excellence, including the resources housed on our companion website, can inform others’ efforts to increase access to and persistence in STEM in higher education. PMID:27562960

  16. Status of the NOAO evaluation of the Hughes 20x64 Si:As impurity band conduction array. [for ground and space-based astronomy

    NASA Technical Reports Server (NTRS)

    Fowler, A. M.; Joyce, R. R.

    1990-01-01

    The Hughes 20 x 64 Si:As impurity band conduction arrays designed for ground-based and spaceborne astronomy observations is described together with experiments performed at NOAO to test these arrays. Special attention is given to the design and the characteristics of the test system and to the test methods. The initial tests on two columns of one array indicate that the array is easy to operate and performed satisfactorily.

  17. Hugh O'Brian Youth Leadership: Using a Theoretical Model at the Intersection of Youth Leadership Education and Service-Learning.

    PubMed

    Ray, Vicki Ferrence

    2016-06-01

    This chapter presents the Hugh O'Brian Youth Leadership (HOBY) program as a case study, examining their gradual process of shifting all programs to integrate leadership development and service. As an organization with over 4,000 volunteers and a nationwide scope, the change process was a challenge but resulted in benefits that fit the organizations' values. The social change model for leadership development (Higher Education Research Institute, ) was used as a guiding framework. PMID:27150908

  18. Mean-field description and propagation of chaos in networks of Hodgkin-Huxley and FitzHugh-Nagumo neurons

    PubMed Central

    2012-01-01

    We derive the mean-field equations arising as the limit of a network of interacting spiking neurons, as the number of neurons goes to infinity. The neurons belong to a fixed number of populations and are represented either by the Hodgkin-Huxley model or by one of its simplified version, the FitzHugh-Nagumo model. The synapses between neurons are either electrical or chemical. The network is assumed to be fully connected. The maximum conductances vary randomly. Under the condition that all neurons’ initial conditions are drawn independently from the same law that depends only on the population they belong to, we prove that a propagation of chaos phenomenon takes place, namely that in the mean-field limit, any finite number of neurons become independent and, within each population, have the same probability distribution. This probability distribution is a solution of a set of implicit equations, either nonlinear stochastic differential equations resembling the McKean-Vlasov equations or non-local partial differential equations resembling the McKean-Vlasov-Fokker-Planck equations. We prove the well-posedness of the McKean-Vlasov equations, i.e. the existence and uniqueness of a solution. We also show the results of some numerical experiments that indicate that the mean-field equations are a good representation of the mean activity of a finite size network, even for modest sizes. These experiments also indicate that the McKean-Vlasov-Fokker-Planck equations may be a good way to understand the mean-field dynamics through, e.g. a bifurcation analysis. Mathematics Subject Classification (2000): 60F99, 60B10, 92B20, 82C32, 82C80, 35Q80. PMID:22657695

  19. Hughes aircraft's architectural design of the federal aviation administration wide-area augmentation system: An international system

    NASA Astrophysics Data System (ADS)

    Ceva, Juan

    Hughes Aircraft is currently developing under contract with the Federal Aviation Administration (FAA) a GPS-based navigation system that is intended to become the primary navigational aid for commercial aviation during all phases of flight—from enroute through Category I precision approach. This innovative system, named the Wide-Area Augmentation System (WAAS), will make use of a network of reference stations distributed throughout the U.S. National Airspace System. These reference stations will collect GPS measurements and send them to master stations. The master stations will process the data to provide correctional information for each GPS satellite. This information will include as separate components the GPS ephemeris errors, satellite clock bias and ionospheric estimation data. The corrections will be sent to the users by means of a Geosynchronous Earth Orbit (GEO) satellite using a specific signal and data format. WAAS is first expected to provide supplemental radio navigation, and eventually to become the primary system of navigation. The system will add the following features to the current GPS system: a GEO ranging function that will improve availability and reliability; differential GPS corrections that will improve accuracy; and integrity monitoring that will provide and enhance safety. To meet the requirements associated with a primary navigation system, WAAS should be able to provide fault-free position fix with a time availability of 0.999 for Category I approaches, and 0.99999 for domestic enroute, terminal and nonprecision approach phases of flight. This paper presents the improvements that this augmentation system offers to stand-alone GPS in order to become the primary navigational system in the U.S. The paper also covers the features that make this wide-area system a naturally expandable system worldwide that will allow the integration of future local-area differential systems across the world.

  20. A modified FitzHugh-Nagumo model for cardiac instabilities: The replacement of a conductance variable with Ca current as a slow variable

    NASA Astrophysics Data System (ADS)

    Osaka, Motohisa

    2013-02-01

    The FitzHugh-Nagumo model of nerve conduction is also used as a model of cardiac excitability. We propose the replacement of a gating variable of the conductance of K+ current with Ca2+ current as a slow variable of the model, in which plays a key role in the cardiac action potential. Since ion currents conduct transversely as well as longitudinally through gap junctions between myocytes, particularly in ischemia, a respective diffusion term is involved to both equations of a fast variable and a slow variable. We show that only a small increase of a coefficient of the diffusion term of Ca2+ current may cause cardiac instabilities, which are presumed to cause breakup of conduction and finally a lethal arrhythmia, ventricular fibrillation. Particularly, these instabilities do not occur without the diffusion term of Ca2+ current.

  1. Swing, release, and escape mechanisms contribute to the generation of phase-locked cluster patterns in a globally coupled FitzHugh-Nagumo model

    NASA Astrophysics Data System (ADS)

    Rotstein, Horacio G.; Wu, Hui

    2012-12-01

    We investigate the mechanism of generation of phase-locked cluster patterns in a globally coupled FitzhHugh-Nagumo model where the fast variable (activator) receives global feedback from the slow variable (inhibitor). We identify three qualitatively different mechanisms (swing-and-release, hold-and-release, and escape-and-release) that contribute to the generation of these patterns. We describe these mechanisms and use this framework to explain under what circumstances two initially out-of-phase oscillatory clusters reach steady phase-locked and in-phase synchronized solutions, and how the phase difference between these steady state cluster patterns depends on the clusters relative size, the global coupling intensity, and other model parameters.

  2. Demonstration Assessment of Light Emitting Diode (LED) Walkway Lighting at the Federal Aviation Administration William J. Hughes Technical Center, in Atlantic City, New Jersey

    SciTech Connect

    Kinzey, Bruce R.; Myer, Michael

    2008-03-18

    This report documents the results of a collaborative project to demonstrate a solid state lighting (SSL) general illumination product in an outdoor area walkway application. In the project, six light-emitting diode (LED) luminaires were installed to replace six existing high pressure sodium (HPS) luminaires mounted on 14-foot poles on a set of exterior walkways and stairs at the Federal Aviation Administration (FAA) William J. Hughes Technical Center in Atlantic City, New Jersey, during December, 2007. The effort was a U.S. Department of Energy (DOE) SSL Technology Gateway Demonstration that involved a collaborative teaming agreement between DOE, FAA and Ruud Lighting (and their wholly owned division, Beta LED). Pre- and post-installation power and illumination measurements were taken and used in calculations of energy savings and related economic payback, while personnel impacted by the new lights were provided questionnaires to gauge their perceptions and feedback. The SSL product demonstrated energy savings of over 25% while maintaining illuminance levels and improving illuminance uniformity. PNNL's economic analysis yielded a variety of potential payback results depending on the assumptions used. In the best case, replacing HPS with the LED luminaire can yield a payback as low as 3 years. The new lamps were quite popular with the affected personnel, who gave the lighting an average score of 4.46 out of 5 for improvement.

  3. The use of real-time, hardware-in-the-loop simulation in the design and development of the new Hughes HS601 spacecraft attitude control system

    NASA Technical Reports Server (NTRS)

    Slafer, Loren I.

    1989-01-01

    Realtime simulation and hardware-in-the-loop testing is being used extensively in all phases of the design, development, and testing of the attitude control system (ACS) for the new Hughes HS601 satellite bus. Realtime, hardware-in-the-loop simulation, integrated with traditional analysis and pure simulation activities is shown to provide a highly efficient and productive overall development program. Implementation of high fidelity simulations of the satellite dynamics and control system algorithms, capable of real-time execution (using applied Dynamics International's System 100), provides a tool which is capable of being integrated with the critical flight microprocessor to create a mixed simulation test (MST). The MST creates a highly accurate, detailed simulated on-orbit test environment, capable of open and closed loop ACS testing, in which the ACS design can be validated. The MST is shown to provide a valuable extension of traditional test methods. A description of the MST configuration is presented, including the spacecraft dynamics simulation model, sensor and actuator emulators, and the test support system. Overall system performance parameters are presented. MST applications are discussed; supporting ACS design, developing on-orbit system performance predictions, flight software development and qualification testing (augmenting the traditional software-based testing), mission planning, and a cost-effective subsystem-level acceptance test. The MST is shown to provide an ideal tool in which the ACS designer can fly the spacecraft on the ground.

  4. Mercury in waters, soils, and sediments of the New Jersey Coastal Plain: A comparison of regional distribution and mobility with the mercury contamination at the William J. Hughes Technical Center, Atlantic County, New Jersey

    USGS Publications Warehouse

    Barringer, Julia L.; Szabo, Zoltan; Reilly, Pamela A.

    2012-01-01

    Mercury in soils, surface water, and groundwater at the William J. Hughes Technical Center , Atlantic County, New Jersey, has been found at levels that exceed established background concentrations in Coastal Plain waters, and, in some cases, New Jersey State standards for mercury in various media. As of 2012, it is not known whether this mercury is part of regional mercury contamination or whether it is related to former military activities. Regionally, groundwater supplying about 700 domestic wells in the New Jersey Coastal Plain is contaminated with mercury that appears to be derived from anthropogenic inputs, such as agricultural pesticide use and atmospheric deposition. High levels of mercury occasionally are found in Coastal Plain soils, but disturbance during residential development on former agricultural land is thought to have mobilized any mercury applied during farming, a hypothesis borne out by experiments leaching mercury from soils. In the unsewered residential areas with mercury-contaminated groundwater, septic-system effluent is believed to create reducing conditions in which mercury sorbed to subsoils is mobilized to groundwater. In comparing the levels of mercury found in soils, sediments, streamwater, and groundwater at the William J. Hughes Technical Center site with those found regionally, mercury concentrations in groundwater in the region are, in some cases, substantially higher than those found in groundwater at the William J. Hughes Technical Center site. Nevertheless, concentrations of mercury in streamwater at the site are, in some instances, higher than most found regionally. The mercury contents in soils and sediment at the William J. Hughes Technical Center site are substantially higher than those found to date (2012) in the region, indicating that a source other than regional sources may be present at the site.

  5. Hughes syndrome and multiple sclerosis.

    PubMed

    Uthman, I; Noureldine, M H A; Berjawi, A; Skaf, M; Haydar, A A; Merashli, M; Hughes, G R V

    2015-02-01

    Multiple sclerosis (MS) and antiphospholipid syndrome (APS) share common clinical, laboratory and radiological features. We reviewed all the English papers on MS and APS published in the literature from 1965 to 2014 using PubMed and Google Scholar. We found that APS can mimic antiphospholipid antibodies (aPL)-positive MS in many ways in its clinical presentation. Nevertheless, APS diagnosis, clinical manifestations and management differ from those of MS. aPL were found in MS patients with titers ranging from 2% to 88%. The distribution and volume of lesions on magnetic resonance imaging (MRI) may help to differentiate MS from primary APS. In addition, atypical MS presentation can guide physicians toward an alternative diagnosis, especially when features of thrombosis and/or history of connective tissue disease are present. In that case, an anticoagulation trial could be worthwhile. PMID:25326228

  6. Obituary: Lawrence Hugh Aller, 1913-2003

    NASA Astrophysics Data System (ADS)

    Kaler, James B.

    2003-12-01

    The announcement still lies in my inbox: ``Lawrence Aller died last Sunday." On 16 March 2003, one of the world's fine astronomers passed away at the age of 89, leaving behind a legacy that will ripple as long as there are students of the celestial science, one that incorporated observation, theory, education, care, decency, and kindness. Lawrence was born in the humblest of conditions in Tacoma, Washington, on 24 September 1913. His mother, Lella (Belle) Allen, was a homemaker and his father Leslie Aller, was an occassional printer and gold prospector who thought that the use of the mind was a waste of time. With fierce persistence and dedication, Lawrence pulled off a feat that would probably not be possible now: getting into college without having finished high school, the result of being dragged to work in his father's primitive gold mining camp. His interest, sparked by leaflets from the Astronomical Society of the Pacific and by Russell, Dugan, and Stewart's venerable textbook, led him to a correspondence, and finally a meeting, with Donald Menzel of Harvard, who persuaded the admissions director of the University of California at Berkeley to admit him in 1932. From there, Lawrence went on to graduate school at Harvard and the Harvard Society of Fellows, where he studied with Menzel and developed his interest in stellar and nebular astronomy. After working in the War effort, he made his professorial debut at Indiana University, where he stayed until 1948 before leaving for the University of Michigan. Residing there for the next 14 years, he established his research reputation and helped develop the Michigan graduate program. In 1962, the opportunity arose to return to California, to UCLA, where he again was instrumental in founding a PhD program. There he stayed, through his retirement in 1984, doing research right up to the end. Eight other schools received him as visiting professor. Lawrence knew that to make inroads into astronomy, he needed to apply physics to the observations, which he ardently sought. Little pleased him more than gathering photons, except perhaps for making atomic calculations with which he could analyze spectra. His real love was gaseous nebulae, specifically planetary nebulae (which he called his ``hobby"), the graceful shells of gas surrounding dying stars that are making their transitions to becoming white dwarfs. His range of simultaneous research projects was staggering. Having been an undergraduate student at Michigan in the late 1950s, I followed him to UCLA to work on my doctorate. When I arrived, I found him engaged in stellar spectroscopy, solar research, nebular theory, nebular observations (he tossed a box of plates at me and said in effect, ``here is your thesis"), and of all things Mie scattering theory to explain the zodiacal light! A list of his discoveries and influences is impressive. A sample: Lawrence played a major role in Menzel's group, which produced the famed ``Physical Processes in Gaseous Nebulae," an 18-part series that ran in the Astrophysical Journal from 1937 to 1945 and that explained nebular spectra. He was among the first to promulgate what in the 1940s was utter heresy, that the chemical compositions of stars could differ from one another. He was the first to observe gradients in spiral galaxies, which ultimately turned out to be the result of abundance variations. David Bohm and Lawrence established the existence of Maxwellian velocity distributions in nebular plasmas. Leo Goldberg, Edith Müller, and he were instrumental in establishing the chemical composition of the Sun. His observations of planetaries were legion. Never content with current observational and analytical capabilities, he sought out the latest equipment, from image tubes through CCDs to the best computers, ever looking ahead. His work was honored in 1992, when he received the American Astronomical Society's Russell Prize. Perhaps Lawrence's greatest legacy involved his teaching and writing. At Michigan, he taught a two-semester course in advanced general astronomy that

  7. Noise reduction experience at Hughes Helicopter, Inc.

    NASA Technical Reports Server (NTRS)

    Janakiram, D. S.

    1982-01-01

    Noise reduction is mostly limited to light helicopters whose noise signature is dominated by their tail rotors. It is primarily hardware oriented. Well known noise reduction techniques such as reduction of rotor speeds with an accompanying increase in solidity to maintain performance, engine noise reduction with the use of exhaust mufflers, and acoustic blanketing of transmission and engine compartment are used. The concept of blade phasing as a means of reducing tail rotor noise is also used. Engine noise (exhaust noise), power train noise and airframe noise becomes important at low rotor tip speeds and means must be found to reduce these noise sources if further noise reductions are desired. The use of a special test rig aids in isolating the various noise sources and arriving at the penalties (performance or payload) involved in quieting them. Significant noise reduction are achieved for the light helicopter with minimum performance or weight penalties because of the dominance of a single noise source (the tail rotor).

  8. Misery Is Fun: Using Langston Hughes's "Black Misery."

    ERIC Educational Resources Information Center

    Benun, Ilise

    1998-01-01

    Uses "Black Misery," a picture book that shines a spotlight on 27 humiliating moments of childhood. Begins by reading the text and discussing the pictures and captions; then asks students to write a minimum of five captions in a manageable amount of time. Concludes by having students read their captions aloud and engage in more discussion. (PA)

  9. Finding the Maine Story in Hugh Cumbersome National Monitoring Datasets

    EPA Science Inventory

    What’s a manager, analyst, or concerned citizen to do with the complex datasets generated by State and Federal monitoring efforts? Is it possible to use such information to address Maine’s environmental issues without having a degree in informatics and statistics? This presentati...

  10. Feedback controller for destroying synchrony in an array of the FitzHugh-Nagumo oscillators

    NASA Astrophysics Data System (ADS)

    Tamaševičius, Arunas; Tamaševičítė, Elena; Mykolaitis, Gytis

    2012-11-01

    We describe an implementation of an electronic feedback controller, destroying synchrony and/or suppressing the mean field in arrays of globally coupled nonidentical oscillators. We demonstrate that the mean field, either artificially nullified or fed back into the array with a negative sign can break up the phase synchronization. The experiments have been carried out with an array of thirty electronic oscillators, imitating dynamical behavior of the spiking neurons. We have found that the negative mean-field technique, depending on the control parameter, can either desynchronize or synchronize the oscillators, whereas in the both cases, it ensures low mean-field voltage.

  11. Critique of a Hughes shuttle Ku-band data sampler/bit synchronizer

    NASA Technical Reports Server (NTRS)

    Holmes, J. K.

    1980-01-01

    An alternative bit synchronizer proposed for shuttle was analyzed in a noise-free environment by considering the basic operation of the loop via timing diagrams and by linearizing the bit synchronizer as an equivalent, continuous, phased-lock loop (PLL). The loop is composed of a high-frequency phase-frequency detector which is capable of detecting both phase and frequency errors and is used to track the clock, and a bit transition detector which attempts to track the transitions of the data bits. It was determined that the basic approach was a good design which, with proper implementation of the accumulator, up/down counter and logic should provide accurate mid-bit sampling with symmetric bits. However, when bit asymmetry occurs, the bit synchronizer can lock up with a large timing error, yet be quasi-stable (timing will not change unless the clock and bit sequence drift). This will result in incorrectly detecting some bits.

  12. Transcriptome and Difference Analysis of Fenpropathrin Resistant Predatory Mite, Neoseiulus barkeri (Hughes)

    PubMed Central

    Cong, Lin; Chen, Fei; Yu, Shijiang; Ding, Lili; Yang, Juan; Luo, Ren; Tian, Huixia; Li, Hongjun; Liu, Haoqiang; Ran, Chun

    2016-01-01

    Several fenpropathrin-resistant predatory mites have been reported. However, the molecular mechanism of the resistance remains unknown. In the present study, the Neoseiulus barkeri (N. barkeri) transcriptome was generated using the Illumina sequencing platform, 34,211 unigenes were obtained, and 15,987 were manually annotated. After manual annotation, attentions were attracted to resistance-related genes, such as voltage-gated sodium channel (VGSC), cytochrome P450s (P450s), and glutathione S-transferases (GSTs). A polymorphism analysis detected two point mutations (E1233G and S1282G) in the linker region between VGSC domain II and III. In addition, 43 putative P450 genes and 10 putative GST genes were identified from the transcriptome. Among them, two P450 genes, NbCYP4EV2 and NbCYP4EZ1, and four GST genes, NbGSTd01, NbGSTd02, NbGSTd03 and NbGSTm03, were remarkably overexpressed 3.64–46.69-fold in the fenpropathrin resistant strain compared to that in the susceptible strain. These results suggest that fenpropathrin resistance in N. barkeri is a complex biological process involving many genetic changes and provide new insight into the N. barkeri resistance mechanism. PMID:27240349

  13. Transcriptome and Difference Analysis of Fenpropathrin Resistant Predatory Mite, Neoseiulus barkeri (Hughes).

    PubMed

    Cong, Lin; Chen, Fei; Yu, Shijiang; Ding, Lili; Yang, Juan; Luo, Ren; Tian, Huixia; Li, Hongjun; Liu, Haoqiang; Ran, Chun

    2016-01-01

    Several fenpropathrin-resistant predatory mites have been reported. However, the molecular mechanism of the resistance remains unknown. In the present study, the Neoseiulus barkeri (N. barkeri) transcriptome was generated using the Illumina sequencing platform, 34,211 unigenes were obtained, and 15,987 were manually annotated. After manual annotation, attentions were attracted to resistance-related genes, such as voltage-gated sodium channel (VGSC), cytochrome P450s (P450s), and glutathione S-transferases (GSTs). A polymorphism analysis detected two point mutations (E1233G and S1282G) in the linker region between VGSC domain II and III. In addition, 43 putative P450 genes and 10 putative GST genes were identified from the transcriptome. Among them, two P450 genes, NbCYP4EV2 and NbCYP4EZ1, and four GST genes, NbGSTd01, NbGSTd02, NbGSTd03 and NbGSTm03, were remarkably overexpressed 3.64-46.69-fold in the fenpropathrin resistant strain compared to that in the susceptible strain. These results suggest that fenpropathrin resistance in N. barkeri is a complex biological process involving many genetic changes and provide new insight into the N. barkeri resistance mechanism. PMID:27240349

  14. VizieR Online Data Catalog: NGC 891 Herschel PACS and SPIRE spectroscopy (Hughes+, 2015)

    NASA Astrophysics Data System (ADS)

    Hughes, T. M.; Foyle, K.; Schirm, M. R. P.; Parkin, T. J.; de Looze, I.; Wilson, C. D.; Bendo, G. J.; Baes, M.; Fritz, J.; Boselli, A.; Cooray, A.; Cormier, D.; Karczewski, O. L.; Lebouteiller, V.; Lu, N.; Madden, S. C.; Spinoglio, L.; Viaene, S.

    2014-10-01

    We present Herschel PACS spectroscopic observations of the [CII] 158, [NII] 122, [OI] 63, 145, and [OIII] 88 micron fine-structure lines in NGC 891 taken has part of the Very Nearby Galaxy Survey (P.I.: C. Wilson). Observations were taken on the 28th February and 1st March, 2011, using the unchopped grating scan mode. They were processed from Level 0 to Level 1 using the Herschel Interactive Processing Environment (HIPE) v.9.2 with calibration files FM,41, following the standard pipeline reduction steps for the unchopped observing mode. Level 1 cubes were exported to PACSman v.3.5.2 (Lebouteiller, 2012A&A...548A..91L), where each individual spaxel's spectrum is fit with a Gaussian function and second order polynomial for the line and continuum baseline, respectively. Intensity maps of the integrated flux are created from the individual rasters, also using PACSman, by projecting the rasters onto a common, over-sampled grid with a 3.133 arcsec pixel size. Complete details on the data reduction may be found in the paper. Our data files are summarised in cubes.dat. Each file is a FITS cube with 8 planes, where each plane contains the following maps: (1.) integrated intensity map in units of W/m2/sr, (2.) integrated intensity error map in units of W/m2/sr, (3.) velocity map in units of km/s, (4.) velocity error map in units of km/s, (5.) full-width at half-maximum map of the line fit in units of km/s, (6.) full-width at half-maximum error map in units of km/s, (7.) continuum map in Jy, and (8.) continuum error map in units of Jy. Please note that the observations consist of raster maps and strips for the [CII], [NII] and [OI] 63 micron lines, and only strips for the remaining lines. The raw data can be retrieved from the Herschel Science Archive (ESA) with the stated OBSIDs. (2 data files).

  15. A Centennial Salute to Arna Bontemps, Langston Hughes, and Lorenz Graham.

    ERIC Educational Resources Information Center

    Bishop, Rudine Sims; McNair, Jonda

    2002-01-01

    Discusses how the contributions of these three writers can best be appreciated in light of the state of African American children's literature early in the 20th century. Notes that the children's literature produced by these three writers is rich in its variety, and included poetry, fantasy, realistic fiction, historical fiction, history,…

  16. Hugh's book and Krogh's animals: biodiversity and textbook examples in teaching.

    PubMed

    Robischon, Marcel

    2014-09-01

    The medieval simile of the world as a book seems to anticipate modern notions of biodiversity as a key to insights and learning. This thought is translated into the practice of research in the August Krogh principle, which provides argumentative support for researchers who dare to venture beyond the range of commonly used models by choosing a new experimental organism for a particular scientific question. Established model organisms often hold high exploratory power to the researcher yet little explanatory power to the student, in particular when represented in a secondary source. This essay puts forward the suggestion that Krogh's principle applies to the use of organisms as instructional models and textbook examples too and encourages educators to continuously venture beyond established illustrative teaching examples in a continuous exploration of the "book of the world" and the "treasure house of nature." PMID:25179607

  17. Black Poets of the United States: From Paul Laurence Dunbar to Langston Hughes.

    ERIC Educational Resources Information Center

    Wagner, Jean

    This book attempts to assess a half century of Afro-American poetry published from 1890 to 1940, focusing on the human experience--individual and collective--from which this poetry was produced. In analyzing the place of black poetry in the American literary domain, attention is given to historical, religious, sociological, and cultural…

  18. Hugh's book and Krogh's animals: biodiversity and textbook examples in teaching

    PubMed Central

    2014-01-01

    The medieval simile of the world as a book seems to anticipate modern notions of biodiversity as a key to insights and learning. This thought is translated into the practice of research in the August Krogh principle, which provides argumentative support for researchers who dare to venture beyond the range of commonly used models by choosing a new experimental organism for a particular scientific question. Established model organisms often hold high exploratory power to the researcher yet little explanatory power to the student, in particular when represented in a secondary source. This essay puts forward the suggestion that Krogh's principle applies to the use of organisms as instructional models and textbook examples too and encourages educators to continuously venture beyond established illustrative teaching examples in a continuous exploration of the “book of the world” and the “treasure house of nature.” PMID:25179607

  19. 78 FR 18226 - Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-26

    ....cecil@faa.gov . SUPPLEMENTARY INFORMATION: Discussion On August 29, 2012, at 77 FR 52264, the Federal... we received no comments on the NPRM (77 FR 52264, August 29, 2012). FAA's Determination We have... Order 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR...

  20. 77 FR 52264 - Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska..., part number (P/N) 369D23500-505, -507, -511, or - 513 with a serial number prefix of ``7604'' and...

  1. DEMONSTRATION BULLETIN: IN SITU STEAM ENHANCED RECOVERY PROCESS - HUGHES ENVIRONMENTAL SYSTEMS, INC.

    EPA Science Inventory

    The Steam Enhanced Recovery Process (SERP) is designed to remove volatile compounds such as halogenated solvents and petroleum hydrocarbons, and semi-volatile compounds from contaminated soils in situ. The vapor pressures of most contaminants will increase by the addition of ste...

  2. Mapping traditional place names along the Koyukuk River: Koyukuk, Huslia, and Hughes, Western Interior Alaska

    USGS Publications Warehouse

    McCloskey, Sarah E.; Jones, Benjamin M.

    2014-01-01

    Koyukon Athabascan peoples have settled along the Koyukuk River in Western Interior Alaska for thousands of years using the surrounding landscape for subsistence and cultural resources. However, recent changes in climate, technology, resource availability, and way of life have affected land-use patterns in the region, as well as use of the Denaakk'e (Koyukon) language. The current Koyukon population is about 2,300, and about 150 still speak the language (the youngest of whom are in their fifties). In addition, Elders, important keepers of both language and traditional subsistence-use areas, are aging, and opportunities to record their knowledge are diminishing.

  3. 77 FR 76457 - Howard Hughes Medical Institute, et al.; Notice of Consolidated Decision on Applications for Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-28

    .... Manufacturer: SPECS Surface Nano Analysis, GmbH, Germany. Intended Use: See notice at 77 FR 70141-42. Comments.... Manufacturer: TTP Labtech Ltd., United Kingdom. Intended Use: See notice at 77 FR 70141, November 23, 2012... Use: See notice at 77 FR 70141, November 23, 2012. Comments: None received. Decision: Approved....

  4. HYDROBIOLOGICAL CHARACTERISTICS OF THE COASTAL LAGOONS AT HUGH TAYLOR BIRCH STATE RECREATION AREA, FORT LAUDERDALE, FLORIDA: A HISTORICAL PERSPECTIVE.

    USGS Publications Warehouse

    Brock, Robert J.

    1987-01-01

    The author presents initial results of an ongoing study of Southeast Florida coastal lagoon lakes. Objectives include presenting environmental conditions within and adjacent to the lagoons under a variety of hydrologic conditions and to determine water-quality changes in ground water and surface water and how these changes in water quality affect lagoonal biological communities within the lagoons.

  5. Hugh's Book and Krogh's Animals: Biodiversity and Textbook Examples in Teaching

    ERIC Educational Resources Information Center

    Robischon, Marcel

    2014-01-01

    The medieval simile of the world as a book seems to anticipate modern notions of biodiversity as a key to insights and learning. This thought is translated into the practice of research in the August Krogh principle, which provides argumentative support for researchers who dare to venture beyond the range of commonly used models by choosing a new…

  6. [A FITZ-HUGH-CURTIS SYNDROME AS A PREMISE OF THE INFLAMMATORY DISEASES OF A HEPATOPANCREATOBILIARY ZONE ORGANS].

    PubMed

    Leonov, V V; Mayura, N A; Lyndin, M S

    2016-03-01

    A content of a biliary ways microflora and its correlation with clinical form and severity of inflammatory-destructive processes in hepatopancreatobiliary zone were studied up. The investigation objective was the optimization of a treatment--diagnostic tactics for the complications and remote recurrences rate reduction in a complicated biliary calculous disease. There was established, that a standard bacteriological investigation do not give a possibility to estimate some causes of a biliary ducts affection, a chlamidial infection in particular. So on, for the individual antibacterial therapy choosing a more detailed and modern examination of patients is needed. PMID:27514088

  7. Dissecting the Science of "Angels and Demons" or Antimatter and Other Matters (Vernon W. Hughes Memorial Lecture)

    SciTech Connect

    Gordon, Howard

    2009-05-27

    Howard Gordon, a physicist from the U.S. Department of Energy’s Brookhaven National Laboratory, and local educators will separate the science facts from the science fiction of “Angels & Demons,” a major motion picture based on Dan Brown’s best-selling novel. The film, which opens nationally in theaters today, focuses on a plot to destroy the Vatican using antimatter stolen from the Large Hadron Collider (LHC) at the European particle physics laboratory CERN. Speakers will explain the real science of the LHC, including antimatter – oppositely charged cousins of ordinary matter with intriguing properties.

  8. Relativistic version of the Feynman–Dyson–Hughes derivation of the Lorentz force law and Maxwell's homogeneous equations

    NASA Astrophysics Data System (ADS)

    Essén, Hanno; Nordmark, Arne B.

    2016-09-01

    The canonical Poisson bracket algebra of four-dimensional relativistic mechanics is used to derive the equation of motion for a charged particle, with the Lorentz force, and the homogeneous Maxwell equations.

  9. (abstract) Observation by Clementine of a Hugh Opposition Surge on the Moon at Very Small Solar Phase Angles

    NASA Technical Reports Server (NTRS)

    Buratti, B. J.; Wang, M. C.

    1994-01-01

    The Clementine mission enabled the first quantative observations of the Moon at very small solar phase angles. It is well established from Earth-based observations that the Moon exhibits a non-linear increase in brightness as its face becomes fully illuminated to a terrestrial observer. Because the models of the opposition effect are sensitive indicators of surfical compaction state and particle size, observations at small solar phase angles are important to obtain. A recent model for optical coherent backscatter seeks to explain a narrow opposition spike at very small phase angles (< 1 degree) seen on several icy satellites , including Europa, Icarus 90, and Oberon . Over 90 images of the Moon's surface at phase angles less than 0.5(deg) (the minimum phase angle observable from Earth due to the Moon's angular size) were obtained by the Clementine spacecraft. Our analysis of these images shows the moon exhibits a surge in brightness of approximately 20% below 0.25(deg), comparable to the values observed on icy satellites. No color dependence was detected in the lunar phase curve below 2 degrees.

  10. A model for predicting the wearout lifetime of the LeRC/Hughes 30-cm mercury ion thruster

    NASA Technical Reports Server (NTRS)

    Beattie, J. R.

    1979-01-01

    An investigation of parameters that affect the erosion rates of 30-cm-diameter mercury-ion-thruster components is described. A sputter-erosion model is formulated in terms of the design, operational, and material characteristics of the thruster. The erosion model is applied to the screen electrode, which is assumed to be the life-limiting component of the 30-cm thruster, resulting in a model of wearout lifetime. Results of short-term erosion-rate tests are presented that illustrate the dependence of component wear rates on variables such as discharge voltage, accelerator-grid open-area fraction, ion energy, electrode material, and the partial pressure of facility residual gases such as nitrogen. Test results are compared with wearout rates predicted by the sputter-erosion model.

  11. 77 FR 20009 - Howard Hughes Medical Institute, et al.; Notice of Consolidated Decision on Applications for Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-03

    ... notice at 77 FR 12240, February 29, 2012. Docket Number: 12-004. Applicant: Max Planck Florida Institute...: Electron Microscope. Manufacturer: FEI Company, Czech Republic. Intended Use: See notice at 77 FR 12240.... Intended Use: See notice at 77 FR 12240, February 29, 2012. Docket Number: 12-005. Applicant: VA Palo...

  12. Characterization of solar cells for space applications. volume 14: electrical characteristics of hughes liquid phase epitaxy gallium arsenide solar cells as a function of intensity, temperature and irradiation

    SciTech Connect

    Anspaugh, B.E.; Downing, R.G.; Miyahira, T.F.; Weiss, R.S.

    1981-11-01

    Electrical characteristics of liquid phase epitaxy, P/N gallium aluminum arsenide solar cells are presented in graphical and tabular format as a function of solar illumination intensity and temperature. The solar cells were exposed to 1 MeV electron fluences of, respectively, 0, one hundred trillion, one quadrillion, and ten quadrillion e/sq cm.

  13. Electrical Characterization of Hughes HCMP 1853D and RCA CDP1853D N-bit, CMOS, 1-of-8 Decoder Microcircuits

    NASA Technical Reports Server (NTRS)

    Stokes, R. L.

    1979-01-01

    Electrical characterization tests were performed on two different manufactured types of integrated circuits. The devices were subjected to functional and AC and DC parametric tests at ambient temperatures of -55 C, -20 C, 25 C, 85 C, and 125 C. The data were analyzed and tabulated to show the effect of operating conditions on performance and to indicate parameter deviations among devices in each group. Accuracy was given precedence over test time efficiency where practical, and tests were designed to measure worst case performance.

  14. The Will to Change: A Conversation about Schools and Learning with Dr. James Comer and Dr. Edmund Gordon, Comments by Hugh Price

    ERIC Educational Resources Information Center

    Coalition for Community Schools, 2006

    2006-01-01

    The Fifth National Forum of the Coalition for Community Schools (Baltimore, Maryland, June 16, 2006) provided a historic opportunity for participants to hear two of America's most distinguished educators, Drs. James Comer and Edmund Gordon. These giants in their fields engaged in an animated and thought-provoking exchange on the educational…

  15. Characterization of solar cells for space applications. Volume 14: Electrical characteristics of Hughes liquid phase epitaxy gallium arsenide solar cells as a function of intensity, temperature and irradiation

    NASA Technical Reports Server (NTRS)

    Anspaugh, B. E.; Downing, R. G.; Miyahira, T. F.; Weiss, R. S.

    1981-01-01

    Electrical characteristics of liquid phase epitaxy, P/N gallium aluminum arsenide solar cells are presented in graphical and tabular format as a function of solar illumination intensity and temperature. The solar cells were exposed to 1 MeV electron fluences of, respectively, 0, one hundred trillion, one quadrillion, and ten quadrillion e/sq cm.

  16. Evaluation of the Junior MESA Program: A Report to the Legislature in Response to Assembly Bill 610 (Hughes) of 1985 [Commission Report 89-30].

    ERIC Educational Resources Information Center

    California State Postsecondary Education Commission, Sacramento.

    The Mathematics, Engineering, Science Achievement (MESA) Program was established in 1970 to increase the number of American Indian, Black, Mexican-American, and Puerto Rican students who graduate from a California university prepared to enter mathematics-based careers. Developed initially with an exclusive focus on high school students, MESA…

  17. The Mysterious Origins of Solar Flares: New observations are beginning to reveal what triggers these hughes explosions of the sun's atmosphere

    NASA Technical Reports Server (NTRS)

    Holman, Gordon D.

    2006-01-01

    Solar flares can release the energy equivalent of billions of atomic bombs in the span of just a few minutes. These explosions give off a burst of x-rays and charged particles, some of which may later hit Earth, endangering satellites and causing power outages. The sun's tumultuous magnetic fields provide the fuel of flares. The sudden release of energy in a flare results from a process called reconnection, whereby oppositely directed magnetic field lines come together and partially annihilate each other. Although theoretical studies of magnetic reconnection on the sun have been carried out for decades, only recently have space probes uncovered observational evidence for this phenomenon. The telltale signs include pointed magnetic loops located below the spot where magnetic reconnection is taking place.

  18. A film producer focuses on issues of social justice and nurses: an interview with Richard Harding. Interviewed by Kathleen McHugh.

    PubMed

    Harding, Richard

    2012-01-01

    This case study of Richard Harding, a producer currently making a film about the Benghazi Six, includes an introductory biography, an interview with the producer, and a brief conclusion. Harding's commitments to both filmmaking and social justice issues led him to The Benghazi Six and the injustices suffered by these Bulgarian nurses, who were persecuted and imprisoned in Libya for 9 years on false charges of infecting Libyan children with HIV. The film production ran alongside of and aided international efforts to free the nurses and one physician from Libya. PMID:23036791

  19. 19. Historic American Buildings Survey Alex Bush, Photographer, June 2, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. Historic American Buildings Survey Alex Bush, Photographer, June 2, 1937 LOOKING NORTHWEST AT SMOKE HOUSE. - Dr. William Hughes House & Outbuildings, Hughes Creek vicinity, Aliceville, Pickens County, AL

  20. A Critical Appraisal of Issues in Differential Response: Moving the Field Forward

    ERIC Educational Resources Information Center

    Winokur, Marc A.; Gabel, George

    2013-01-01

    This reaction article highlights areas of agreement and disagreement with the study conducted by Hughes, Rycus, Saunders-Adams, Hughes, and Hughes on the current state of research and practice in differential response (DR). Overall, we agree with several of the arguments put forth by Hughes et al. regarding the limitations of DR research and the…

  1. Classification of Pseudomonas diminuta Leifson and Hugh 1954 and Pseudomonas vesicularis Büsing, Döll, and Freytag 1953 in Brevundimonas gen. nov. as Brevundimonas diminuta comb. nov. and Brevundimonas vesicularis comb. nov., respectively.

    PubMed

    Segers, P; Vancanneyt, M; Pot, B; Torck, U; Hoste, B; Dewettinck, D; Falsen, E; Kersters, K; De Vos, P

    1994-07-01

    The taxonomic positions of strains previously assigned to Pseudomonas diminuta and Pseudomonas vesicularis were investigated by a polyphasic approach. The results of DNA-rRNA hybridization studies indicated that these two species belong to a separate genus in the alpha subclass (rRNA superfamily IV) of the Proteobacteria, for which the name Brevundimonas is proposed. Genus delineation and species delineation were determined by comparing the results of numerical analyses of whole-cell protein patterns, fatty acid compositions, and phenotypic characteristics and by measuring DNA base ratios and degrees of DNA relatedness. Taxonomic characteristics of Brevundimonas diminuta and Brevundimonas vesicularis strains were compared with characteristics of reference strains belonging to the following phylogenetically related taxa: a group of organisms gathered in Enevold Falsen group 21, the genera Sphingomonas and Rhizomonas, and the generically misclassified organisms [Pseudomonas] echinoides and "[Pseudomonas] riboflavina." PMID:8068543

  2. A new species of predaceous mite of the genus Neoseiulus Hughes (Acari, Phytoseiidae), with redescriptions of N. magnanalis (Thor) and N. ellesmerei (Chant & Hansell), from Svalbard, High Arctic.

    PubMed

    Kolodochka, Leonid A; Gwiazdowicz, Dariusz J

    2014-01-01

    A new species of phytoseiid mite of the genus Neoseiulus (Acari, Phytoseiidae) found in Svalbard is described and illustrated. Redescriptions, drawings, measurements, and diagnosis of two related species, N. magnanalis (Thor) and N. ellesmerei (Chant & Hansell) are given. A neotype is designated for N. magnanalis. PMID:24870183

  3. The First Bachelor of Science Degree in Wind Energy in the US at Texas Tech University Authors: A. Ruiz Columbié, K. Rozsavolgyi, P. Hughes, D. Farris, A. Swift, R. Walker and M. Baker

    NASA Astrophysics Data System (ADS)

    Ruiz-Columbie, A.

    2010-12-01

    This paper presents a new Bachelor of Science Degree in Wind Energy proposal at Texas Tech University (TTU) beginning the spring 2011. It is designed to prepare the students for admission into a graduate program in wind energy, and/or employment as a professional in wind energy. The program integrates the environmental, social, economic, ethical, technical, scientific principles and practical skills the graduates will need in order to success as professionals in their field of expertise. This degree will provide a multidisciplinary education in the wind energy field through the study of subjects as wind meteorology, wind power generation, wind resource assessment, sustainable energy systems, utility systems operations, and fiscal and operational oversight. Students will be prepared to contribute in areas that include planning, development, operations, analysis and supervision of wind energy systems and projects, as well as to continue in graduate studies. Following the Texas Tech Uniform Undergraduate Degree Requirement Act, the major in Wind Energy will include 47 hours of general education courses from the TTU academic core, 18 hours of junior/senior level electives, and 55 hours of coursework in wind energy topics. A minor of 18 hours is also provided at TTU for those students with a different major who might decide to get a higher education in wind energy.

  4. To redesignate the Dryden Flight Research Center as the Neil A. Armstrong Flight Research Center and the Western Aeronautical Test Range as the Hugh L. Dryden Aeronautical Test Range.

    THOMAS, 112th Congress

    Rep. McCarthy, Kevin [R-CA-22

    2012-11-29

    01/01/2013 Received in the Senate and Read twice and referred to the Committee on Commerce, Science, and Transportation. (All Actions) Tracker: This bill has the status Passed HouseHere are the steps for Status of Legislation:

  5. 78 FR 13056 - Proposed CERCLA Administrative Cost Recovery Settlement; in re: Factory H Superfund Site, Meriden...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-26

    ... to Hugh W. Martinez, Senior Enforcement Counsel, U.S. Environmental Protection Agency, Region 1, 5... CONTACT: A copy of the proposed settlement may be obtained from Hugh W. Martinez, Senior Enforcement...), Boston, MA 02109-3912 (telephone no. (617) 918-1867; email Martinez.hugh@epa.gov ). Dated: December...

  6. Responding to "Issues in Differential Response"

    ERIC Educational Resources Information Center

    Perry, Robin Ernest

    2013-01-01

    Hughes, Rycus, Saunders-Adams, Hughes, and Hughes's article represents an important effort to critically examine the foundation of thought and empirical evidence associated with the rise in prominence of differential response (DR) within child welfare systems throughout the United States. The insights and criticisms offered are an important…

  7. 28. PENTHOUSE, ROOM 3005, LOOKING SOUTHWEST THROUGH DOUBLE DOORS. NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. PENTHOUSE, ROOM 3005, LOOKING SOUTHWEST THROUGH DOUBLE DOORS. NORTH SIDE OF BUILDING. - Hughes Aircraft Company, Processing & Electronics Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  8. 78 FR 45535 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-29

    .... Hughes, Jr., Jacksonville, Florida; J. Malcolm Jones, Jr., Jacksonville, Florida; James T. Katsur, Longwood, Florida; W. Andrew Krusen, Jr., Tampa, Florida; Allan S. Martin, Tampa, Florida; Linda C....

  9. The Dynamic Duo

    ERIC Educational Resources Information Center

    Hollingsworth, Jan Carter

    2007-01-01

    This article features a father and son team from Louisville, Kentucky--an exceptional son, Patrick Henry Hughes, and an exceptional parent, Patrick John Hughes. Patrick Henry, age 19, is a proud member of the University of Louisville's (UL) marching band. It is also worth noting that Patrick Henry, a virtuoso musician, is a young man challenged…

  10. Testimony Presented at an Open Hearing of the National Commission on Excellence in Teacher Education (New York, New York, October 18-19, 1984). Volume III.

    ERIC Educational Resources Information Center

    1984

    Included are presentations on (or entitled): (1) role of schools of education (Lia Gelb); (2) teacher education programs (Katherine Sid); (3) "Quality and Quality Control in the Teaching Profession" (Hugh J. Scott); (4) "Educational Reform and Teacher Education" (Hugh G. Petrie); (5) teacher recruitment (Gladys M. Hannon); (6) school…

  11. Grants for Science Education 1997. Including Grants for Research Resources in the United States and for Biomedical Scientists Abroad.

    ERIC Educational Resources Information Center

    Howard Hughes Medical Inst., Chevy Chase, MD. Office of Grants and Special Programs.

    The data presented in this document provide information about those individuals and organizations that received funding from the Howard Hughes Medical Institute in 1997. Following a description of the Howard Hughes Medical Institute programs, details on the funding of graduate science education, undergraduate biological sciences education,…

  12. The Egalitarian Marriages of Six Froebelian Leaders in Late Nineteenth Century America.

    ERIC Educational Resources Information Center

    Hewes, Dorothy W.

    During the final years of the nineteenth century, among the leaders of the American Froebelian kindergarten movement were three dual-career couples who exemplified the concept of egalitarian marriage: John Kraus and Maria Kraus-Boelte, William and Eudora Hailmann, and Ada Morean Hughes and John Hughes. This paper focuses on the way these six…

  13. The African-American Legacy in American Literature.

    ERIC Educational Resources Information Center

    Abarry, Abu

    1990-01-01

    Reviews the contributions of African-American poetry to the development of English literature from the earliest Black orator through the works of Langston Hughes. Emphasizes the work of Phillis Wheatley, Paul Lawrence Dunbar,"The New Negro" writers, and Hughes. (FMW)

  14. Dreams of Possibilities: Linking Poetry to Our Lives.

    ERIC Educational Resources Information Center

    Lowery, Ruth McKoy

    2003-01-01

    Notes how as a teacher educator, the author incorporates poems of Langston Hughes in hopes of preparing pre-service teachers to teach diverse students. Shares pre-service teachers' reflections to Hughes' poem "Dreams" in one literature class. Begins with an overview of poetry in children's lives, describes the setting and presents how the…

  15. Lessons Learned During the Integration Phase of the NASA IN-STEP Cryo System Experiment

    NASA Technical Reports Server (NTRS)

    Sugimura, R. S.; Russo, S. C.; Gilman, D. C.

    1994-01-01

    The Cryo System Experiment (CSE), a NASA In-Space Technology Experiments Proram (IN-STEP) Class D Flight Experiment, was developed by Hughes Aircraft Company (Hughes) to validate in zero-g space a 65 K cryogenic system for focal planes, optics, instruments, or other equipment (gramma-ray spectrometers and infrared and submillimeter imaging instruments) that require continuous cryogenic cooling.

  16. Do Haphazard Reviews Provide Sound Directions for Dissemination Efforts?

    ERIC Educational Resources Information Center

    Gambrill, Eileen; Littell, Julia H.

    2010-01-01

    Comments on The dissemination and implementation of evidence-based psychological treatments: A review of current efforts by Kathryn R. McHugh and David H. Barlow. The lead article in the February-March issue by McHugh and Barlow (2010) emphasized the need for "dissemination and implementation of evidence-based psychological treatments." The…

  17. Hot and Cold Therapy Eases Pain

    NASA Technical Reports Server (NTRS)

    2004-01-01

    In the 1960s, NASA civil servant Tom Hughes worked for Marshall Space Flight Center s Quality Control Laboratory as a systems engineer. Reporting directly to Dr. Wernher von Braun, Marshall s first director, Hughes was assigned as a NASA representative for quality control at the Michoud Assembly Facility in New Orleans, Louisiana, to oversee the Saturn V rocket project. During this time, Hughes invented several technologies to improve the safety of the rocket, earning several commendations from von Braun. He also gained technical expertise in microwave technology, as NASA researched it to determine its relationship to radar.

  18. 13. REMAINING TOP PART OF SOUTH ELEVATION, HAMMER BUILDING, SINCE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. REMAINING TOP PART OF SOUTH ELEVATION, HAMMER BUILDING, SINCE JOINED TO BUILDING 6. - Hughes Aircraft Company, Assembly & Manufacturing Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  19. Readings That Made a Difference: Three Friends.

    ERIC Educational Resources Information Center

    Larrick, Nancy

    1979-01-01

    Discusses the three books "most important and influential" to the author: "Creative Power: Youth in the Creative Arts" by Hughes Mearns; "Teacher" by Sylvia Ashton-Warner; and "Books, Children, and Men" by Paul Hazard. (DD)

  20. High Quality Color Imaging on the Mead Microencapsulated Imaging System Using a Fiber Optic CRT

    NASA Astrophysics Data System (ADS)

    Duke, Ronald J.

    1989-07-01

    Mead Imaging's unique microencapsulated color imaging system (CYCOLOR) has many applications. Mead Imaging and Hughes have combined CYCOLOR and Fiber Optic Cathode Ray Tubes (FOCRT) to develop digital color printers.

  1. Genetics Home Reference: congenital hyperinsulinism

    MedlinePlus

    ... C, Becker S, Lin YW, Hanna C, Thornton P, Ganguly A, Shyng SL, Stanley CA. Clinical characteristics and ... Hughes N, Ganapathy K, Bhatti T, Stanley CA, Ganguly A. Genotype and phenotype correlations in 417 children ...

  2. POPULATION DYNAMICS OF THE HOUSE DUST MITES, DERMATOPHAGOIDES FARINAE, D. PTERONYSSINUS, AND EUROGLYPHUS MAYNEI (ACARI: PYROGLYPHIDAE), AT SPECIFIC RELATIVE HUMIDITIES

    EPA Science Inventory

    Experiments were conducted to determine the effects of relative humidity (RH) on the population dynamics of single and mixed species of Dermatophagoides farinae (Hughes), D. pteronyssinus (Trouessart), and Euroglyphus maynei (Cooreman) at specific RHs, , and unlimited food. Sin...

  3. View south, barn, north elevation Woods Homestead, Barn, County ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View south, barn, north elevation - Woods Homestead, Barn, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  4. View southeast, general view, barn at left Woods Homestead, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View southeast, general view, barn at left - Woods Homestead, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  5. View north, barn, south elevation Woods Homestead, Barn, County ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View north, barn, south elevation - Woods Homestead, Barn, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  6. View west, barn, east elevation Woods Homestead, Barn, County ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View west, barn, east elevation - Woods Homestead, Barn, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  7. View east, barn, west elevation Woods Homestead, Barn, County ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View east, barn, west elevation - Woods Homestead, Barn, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  8. View west, interior, detail of joinery Woods Homestead, Barn, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View west, interior, detail of joinery - Woods Homestead, Barn, County Route 12 on north side of North Fork of Hughes River, 2.2 miles north & east of Goose Run Road intersection, Harrisville, Ritchie County, WV

  9. 15. SOUTH BAY, EAST END. LOOKING UP TO RIDGELINE. THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. SOUTH BAY, EAST END. LOOKING UP TO RIDGELINE. THE ARCHED "CONCRETE" IS PART OF A TEMPORARY MOVIE SET. - Hughes Aircraft Company, Cargo Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  10. Palliative care - managing pain

    MedlinePlus

    Palliative care helps people with serious illnesses feel better. One of the problems a serious illness can cause ... Bookbinder M, McHugh ME. Symptom management in palliative care and ... Challenging pain problems. In: Walsh D, Caraceni AT, Fainsinger ...

  11. Building for the future

    PubMed Central

    2013-01-01

    As the staff of the MRC Laboratory of Molecular Biology settle into their new building in Cambridge, its director Hugh Pelham explains the challenges of living up to its prestigious past. PMID:23741620

  12. INTELSAT VI artist concept drawing titled 'Ocean Bridge'

    NASA Technical Reports Server (NTRS)

    1992-01-01

    International Telecommunications Satellite Organization (INTELSAT) VI artist concept drawing titled 'Ocean Bridge' shows satellite built by Hughes Aircraft Company and owned and operated by INTELSAT, a 122-nation cooperative, orbiting the Earth.

  13. Part Two. Personal Voices.

    ERIC Educational Resources Information Center

    King, David C.

    1979-01-01

    Presents people's experiences and perceptions of events in four lesson plans. Includes personal accounts of people moving westward, one family's decision to migrate to America, Lucy Stone and women's rights, and Langston Hughes' high school days. (CK)

  14. Responses to the Learning and Skills Bill.

    ERIC Educational Resources Information Center

    Adults Learning (England), 2000

    2000-01-01

    Includes "Commentary" (Alan Tuckett); "Lifelong Learning" (Malcolm Wicks); "An Opposition View" (Tim Boswell); "Opening up the Learning Market" (Jacqui Henderson); "Ringing in the Changes" (Chris Hughes); and "More Reasons to Be Cheerful, More Causes for Concern" (Alastair Thomson). (SK)

  15. Sequencing Complex Genomic Regions

    SciTech Connect

    Eichler, Evan

    2009-05-28

    Evan Eichler, Howard Hughes Medical Investigator at the University of Washington, gives the May 28, 2009 keynote speech at the "Sequencing, Finishing, Analysis in the Future" meeting in Santa Fe, NM. Part 1 of 2

  16. Sequencing Complex Genomic Regions

    SciTech Connect

    Eichler, Evan

    2009-05-28

    Evan Eichler, Howard Hughes Medical Investigator at the University of Washington, gives the May 28, 2009 keynote speech at the "Sequencing, Finishing, Analysis in the Future" meeting in Santa Fe, NM. Part 2 of 2

  17. 18. DARK WOOD CABINETRY IN ANTEROOM TO LARGE OFFICE IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. DARK WOOD CABINETRY IN ANTEROOM TO LARGE OFFICE IN SOUTHWEST CORNER, SECOND FLOOR. VIEW TO NORTHWEST. - Hughes Aircraft Company, Administrative Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  18. The Relationship Between Training and Canada's Competitive Position

    ERIC Educational Resources Information Center

    Canadian Training Methods, 1976

    1976-01-01

    Martin McBride, Hugh Henderson, Peter Dawson, and O. E. Gullander in a panel discussion present their views on the relationship between Canadian training needs and Canada's trade position. (Author/BP)

  19. Life Stories: Personal Portraits.

    ERIC Educational Resources Information Center

    Moore, John Noell, Ed.

    2001-01-01

    Offers glimpses into the landscapes of people's lives. Discusses Edith Bruck's "Who Loves You Like This,""Life Stories: Profiles from 'The New Yorker'," and Hugh Sidey's "Portraits of the Presidents: Power and Personality in the Oval Office." (SG)

  20. Fire modeling for Building 221-T - T Plant Canyon Deck and Railroad Tunnel

    SciTech Connect

    Oar, D.L.

    1994-09-29

    This report was prepared by Hughes Associates, Inc. to document the results of fire models for building 221-T Canyon Deck and Railroad Tunnel. Backup data is contained in document No. WHC-SD-CP-ANAL-010, Rev. 0.

  1. 18. RADAR BED/SLAB AND ROOF OPENING FOR BEAM, WITH MIRROR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. RADAR BED/SLAB AND ROOF OPENING FOR BEAM, WITH MIRROR ABOVE, ROOM 3001, PENTHOUSE. - Hughes Aircraft Company, Assembly & Manufacturing Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  2. 18. PLAIN OFFICE; SHOWS WOODWORK AND WALL TREATMENT. ROOM 2662, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. PLAIN OFFICE; SHOWS WOODWORK AND WALL TREATMENT. ROOM 2662, SECOND FLOOR, SOUTH SIDE. - Hughes Aircraft Company, Processing & Electronics Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  3. 22. STEEL ARCH SEGMENT AND VENT IN OFFICE, ROOM 2351, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. STEEL ARCH SEGMENT AND VENT IN OFFICE, ROOM 2351, SECOND FLOOR, NORTH SIDE. - Hughes Aircraft Company, Processing & Electronics Building, 6775 Centinela Avenue, Los Angeles, Los Angeles County, CA

  4. Palliative care - managing pain

    MedlinePlus

    End of life - pain management; Hospice - pain management ... Bookbinder M, McHugh ME. Symptom management in palliative care and end of life care. Nurs Clin North Am . 2010;45:271-327. Mercadente S. Challenging pain problems. In: ...

  5. 6. VIEW SOUTHWEST, COOLING TROUGH REMAINS Imperial Carbon Black ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW SOUTHWEST, COOLING TROUGH REMAINS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  6. 4. VIEW SOUTHEAST, COMPRESSOR PADS Imperial Carbon Black Plant ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. VIEW SOUTHEAST, COMPRESSOR PADS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  7. 7. VIEW NORTHEAST, COOLING TANK Imperial Carbon Black Plant ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW NORTHEAST, COOLING TANK - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  8. 3. VIEW NORTH, COOLING TANK REMAINS Imperial Carbon Black ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. VIEW NORTH, COOLING TANK REMAINS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  9. 5. VIEW SOUTH, STORAGE BUILDING PIERS Imperial Carbon Black ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW SOUTH, STORAGE BUILDING PIERS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  10. 9. VIEW EAST, STORAGE BUILDING PIERS Imperial Carbon Black ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW EAST, STORAGE BUILDING PIERS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  11. 8. VIEW NORTHEAST, WORKSHOP PIERS Imperial Carbon Black Plant ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW NORTHEAST, WORKSHOP PIERS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  12. 2. VIEW SOUTHWEST, COMPRESSOR PADS Imperial Carbon Black Plant ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW SOUTHWEST, COMPRESSOR PADS - Imperial Carbon Black Plant (Ruin), North side of North Fork of Hughes River along Bunnell Run Road just over 0.5 mile from its intersection with State Route 16, Harrisville, Ritchie County, WV

  13. Anorchia

    MedlinePlus

    Achermann JC, Hughes JA. Disorders of sex development. In: Melmed S, Polonsky KS, Larsen PR, Kronenberg HM, eds. Williams Textbook of Endocrinology . 12th ed. Philadelphia, PA: Elsevier Saunders; 2011: ...

  14. Compressed Air System Optimization Improves Production and saves energy at a Satellite Manufacturer

    SciTech Connect

    2002-05-01

    In 2001, a compressed air improvement project was implemented following an audit on the compressed air system at Boeing Satellite Systems (formerly Hughes Space & Communications Company) in Los Angeles, California.

  15. 78 FR 78975 - Notice of Publication of a Draft of the Revised Guidebook for the National Practitioner Data Bank

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-27

    ... on how to submit comments, visit the NPDB Web site at: http://www.npdb.hrsa.gov/news/news.jsp . DATES....gov/news/news.jsp . FOR FURTHER INFORMATION CONTACT: Ernia P. Hughes, MBA, Acting Director of...

  16. The treatment of a dictator.

    PubMed

    Wade, Owen

    2003-05-01

    In 1973 Mr Richard Hughes, who was working on the third novel of his trilogy on the rise of the Nazi Party and Adolf Hitler, came to see me regarding a document, some 300 pages long, on the medical treatment given by Dr Theodore Morell to Hitler. The document had been obtained at the Nuremberg war trials. My original report to Hughes on the content of this document is reproduced here. PMID:12717543

  17. The Grading Abyss

    NASA Astrophysics Data System (ADS)

    Ross, Hugh

    2009-05-01

    Editor's note: Hugh Ross is a physics teacher at Guerin Catholic High School in Noblesville, IN. He received his BS in aerospace engineering from Georgia Institute of Technology and his MS in aeronautical and astronautical engineering from Purdue University. After being drawn to the field of education, he later earned his MS in math and science education from Purdue University. Hugh also freelances as a science writer, developing test preparation manuals, science texts, and science test items.

  18. Hair Styling Appliances

    NASA Technical Reports Server (NTRS)

    1984-01-01

    Key tool of Redken Laboratories new line of hair styling appliances is an instrument called a thermograph, a heat sensing device originally developed by Hughes Aircraft Co. under U.S. Army and NASA funding. Redken Laboratories bought one of the early models of the Hughes Probeye Thermal Video System or TVS which detects the various degrees of heat emitted by an object and displays the results in color on a TV monitor with colors representing different temperatures detected.

  19. Using the conservative nature of fresh leaf surface density to measure foliar area

    NASA Astrophysics Data System (ADS)

    Castillo, Omar S.; Zaragoza, Esther M.; Alvarado, Carlos J.; Barrera, Maria G.; Dasgupta-Schubert, Nabanita

    2014-10-01

    For a herbaceous species, the inverse of the fresh leaf surface density, the Hughes constant, is nearly conserved. We apply the Hughes constant to develop an absolute method of leafarea measurement that requires no regression fits, prior calibrations or oven-drying. The Hughes constant was determined in situ using a known geometry and weights of a sub-set obtained from the fresh leaves whose areas are desired. Subsequently, the leaf-areas (at any desired stratification level), were derived by utilizing the Hughes constant and the masses of the fresh leaves. The proof of concept was established for leaf-discs of the plants Mandevilla splendens and Spathiphyllum wallisii. The conservativeness of the Hughes constant over individual leaf-zones and different leaftypes from the leaves of each species was quantitatively validated. Using the globally averaged Hughes constant for each species, the leaf-area of these and additional co-species plants, were obtained. The leaf-area-measurement-by-mass was cross-checked with standard digital image analysis. There were no statistically significant differences between the leaf-area-measurement-by-mass and the digital image analysis measured leaf-areas and the linear correlation between the two methods was very good. Leaf-areameasurement- by-mass was found to be rapid and simple with accuracies comparable to the digital image analysis method. The greatly reduced cost of leaf-area-measurement-by-mass could be beneficial for small agri-businesses in developing countries.

  20. Stimulated rotational Raman scattering

    NASA Astrophysics Data System (ADS)

    Parazzoli, C. G.; Rafanelli, G. L.; Capps, D. M.; Drutman, C.

    1989-03-01

    The effect of Stimulated Rotational Raman Scattering (SRRS) processes on high energy laser directed energy weapon systems was studied. The program had 3 main objectives; achieving an accurate description of the physical processes involved in SRRS; developing a numerical algorithm to confidently evaluate SRRS-induced losses in the propagation of high energy laser beams in the uplink and downlink segments of the optical trains of various strategic defense system scenarios; and discovering possible methods to eliminate, or at least reduce, the deleterious effects of SRRS on the energy deposition on target. The following topics are discussed: the motivation for the accomplishments of the DOE program; the Semiclassical Theory of Non-Resonant SRRS for Diatomic Homonuclear Molecules; and then the following appendices; Calculation of the Dipole Transition Reduced Matrix Element, Guided Tour of Hughes SRRS Code, Running the Hughes SRRS Code, and Hughes SRRS Code Listing.

  1. Joint UK/US Radar Program progress reports for period January 1--31, 1995

    SciTech Connect

    Twogood, R.E.; Brase, J.M.; Robey, H.F.; Mantrom, D.D.; Rino, C.; Chambers, D.H.; Belyea, J.

    1995-02-15

    Our current objectives are to modify the Hughes x-band radar for airborne implementation, to upgrade it to polarimetry, high-power, and add SLAR mode, and then to deploy in UK/US field experiments as needed. We are on schedule and within budget on bringing the airborne (Hughes A-3) system for future SAR and eventually, SLAR imaging at low grazing angles. Hughes and LLNL continued work on system integration, radar hardware, and associated control hardware and software. The belly radome design modification previously completed is now being procured. The overall radar and testbed remains on schedule for engineering checkout in April 1995, pending the arrival of FY95 funds as expected.

  2. Controlling chimera states: The influence of excitable units

    NASA Astrophysics Data System (ADS)

    Isele, Thomas; Hizanidis, Johanne; Provata, Astero; Hövel, Philipp

    2016-02-01

    We explore the influence of a block of excitable units on the existence and behavior of chimera states in a nonlocally coupled ring-network of FitzHugh-Nagumo elements. The FitzHugh-Nagumo system, a paradigmatic model in many fields from neuroscience to chemical pattern formation and nonlinear electronics, exhibits oscillatory or excitable behavior depending on the values of its parameters. Until now, chimera states have been studied in networks of coupled oscillatory FitzHugh-Nagumo elements. In the present work, we find that introducing a block of excitable units into the network may lead to several interesting effects. It allows for controlling the position of a chimera state as well as for generating a chimera state directly from the synchronous state.

  3. Controls on accretion of flysch and melange belts at convergent margins: evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska

    USGS Publications Warehouse

    Kusky, T.M.; Bradley, D.C.; Haeussler, P.J.; Karl, S.

    1997-01-01

    Controls on accretion of flysch and melange terranes at convergent margins are poorly understood. Southern Alaska's Chugach terrane forms the outboard accretionary margin of the Wrangellia composite terrane, and consists of two major lithotectonic units, including Triassic-Cretaceous melange of the McHugh Complex and Late Cretaceous flysch of the Valdez Group. The contact between the McHugh Complex and the Valdez Group on the Kenai Peninsula is a tectonic boundary between chaotically deformed melange of argillite, chert, greenstone, and graywacke of the McHugh Complex and a less chaotically deformed melange of argillite and graywacke of the Valdez Group. We assign the latter to a new, informal unit of formational rank, the Iceworm melange, and interpret it as a contractional fault zone (Chugach Bay thrust) along which the Valdez Group was emplaced beneath the McHugh Complex. The McHugh Complex had already been deformed and metamorphosed to prehnite-pumpellyite facies prior to formation of the Iceworm melange. The Chugach Bay thrust formed between 75 and 55 Ma, as shown by Campanian-Maastrichtian depositional ages of the Valdez Group, and fault-related fabrics in the Iceworm melange that are cut by Paleocene dikes. Motion along the Chugach Bay thrust thus followed Middle to Late Cretaceous collision (circa 90-100 Ma) of the Wrangellia composite terrane with North America. Collision related uplift and erosion of mountains in British Columbia formed a submarine fan on the Farallon plate, and we suggest that attempted subduction of this fan dramatically changed the subduction/accretion style within the Chugach accretionary wedge. We propose a model in which subduction of thinly sedimented plates concentrates shear strains in a narrow zone, generating melanges like the McHugh in accretionary complexes. Subduction of thickly sedimented plates allows wider distribution of shear strains to accommodate plate convergence, generating a more coherent accretionary style

  4. Design and development of a 5 kV isolated solid state switch

    NASA Technical Reports Server (NTRS)

    Holbrook, R. J.; Scapple, R. Y.; Keister, F. Z.; Gooder, S. T.

    1975-01-01

    This paper describes the design and fabrication of a 5000 volt isolated hybrid switch developed by Hughes Aircraft Company under contract to NASA/Lewis. Hughes did the packaging design and NASA did the circuit design. This unique microcircuit is intended for use as a shorting switch for large extraterrestrial solar cell arrays. The packaging design for the 5 kV isolated hybrid switch is different from most hybrid microcircuits in that it utilizes a compartmentalized plastic case (a portion of which is encapsulated), is not hermetic, and is designed for high voltage operation.

  5. Thermal Video Systems

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Hughes Aircraft Corporation's Probeye Model 3300 Thermal Video System consists of tripod mounted infrared scanner that detects the degree of heat emitted by an object and a TV monitor on which results are displayed. Latest addition to Hughes line of infrared medical applications can detect temperature variations as fine as one-tenth of a degree centigrade. Thermography, proving to be a valuable screening tool in diagnosis, can produce information to preclude necessity of performing more invasive tests that may be painful and hazardous. Also useful in verifying a patient's progress through therapy and rehabilitation.

  6. Experimental implementation of a biometric laser synaptic sensor.

    PubMed

    Pisarchik, Alexander N; Sevilla-Escoboza, Ricardo; Jaimes-Reátegui, Rider; Huerta-Cuellar, Guillermo; García-Lopez, J Hugo; Kazantsev, Victor B

    2013-01-01

    We fabricate a biometric laser fiber synaptic sensor to transmit information from one neuron cell to the other by an optical way. The optical synapse is constructed on the base of an erbium-doped fiber laser, whose pumped diode current is driven by a pre-synaptic FitzHugh-Nagumo electronic neuron, and the laser output controls a post-synaptic FitzHugh-Nagumo electronic neuron. The implemented laser synapse displays very rich dynamics, including fixed points, periodic orbits with different frequency-locking ratios and chaos. These regimes can be beneficial for efficient biorobotics, where behavioral flexibility subserved by synaptic connectivity is a challenge. PMID:24351638

  7. Photographic copy of 7” x 12” black and white photograph ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photographic copy of 7” x 12” black and white photograph of 1927 pencil drawing mounted on card stock by artist Hugh Ferris. Loose in oversized box located at the National Museum of American History, Smithsonian Institution, Archives Center, Work and Industry Division, Washington, D.C. 1927 PENCIL DRAWING MOUNTED ON CARD STOCK BY ARTIST HUGH FERRIS SHOWING EARLY DESIGN OF PROPOSED MISSISSIPPI RIVER BRIDGE. - Huey P. Long Bridge, Spanning Mississippi River approximately midway between nine & twelve mile points upstream from & west of New Orleans, Jefferson, Jefferson Parish, LA

  8. Evolution and status of the 30-cm engineering model ion thruster

    NASA Technical Reports Server (NTRS)

    Masek, T. D.; Poeschel, R. L.; Collett, C. R.; Schnelker, D. E.

    1976-01-01

    In the past five years the 30-cm ion thruster has developed from infancy to maturity through the joint efforts of the NASA Lewis Research Center (LeRC) and the Hughes Research Laboratories (HRL). The evolution of the 30-cm thruster from the 200-series design to the present 900-series is described. This evolution has included both breadboard and engineering model type thrusters. The evolution description includes functional requirements, design, performance, endurance test results, and major features. The major part of the discussion centers on Hughes-built hardware although NASA LeRC contributions are reflected in the designs.

  9. Controls on accretion of flysch and mélange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm mélange, Chugach accretionary wedge, Alaska

    NASA Astrophysics Data System (ADS)

    Kusky, Timothy M.; Bradley, Dwight C.; Haeussler, Peter J.; Karl, Sue

    1997-12-01

    Controls on accretion of flysch and mélange terranes at convergent margins are poorly understood. Southern Alaska's Chugach terrane forms the outboard accretionary margin of the Wrangellia composite terrane, and consists of two major lithotectonic units, including Triassic-Cretaceous mélange of the McHugh Complex and Late Cretaceous flysch of the Valdez Group. The contact between the McHugh Complex and the Valdez Group on the Kenai Peninsula is a tectonic boundary between chaotically deformed melange of argillite, chert, greenstone, and graywacke of the McHugh Complex and a less chaotically deformed mélange of argillite and graywacke of the Valdez Group. We assign the latter to a new, informal unit of formational rank, the Iceworm mélange, and interpret it as a contractional fault zone (Chugach Bay thrust) along which the Valdez Group was emplaced beneath the McHugh Complex. The McHugh Complex had already been deformed and metamorphosed to prehnite-pumpellyite facies prior to formation of the Iceworm mélange. The Chugach Bay thrust formed between 75 and 55 Ma, as shown by Campanian-Maastrichtian depositional ages of the Valdez Group, and fault-related fabrics in the Iceworm mélange that are cut by Paleocene dikes. Motion along the Chugach Bay thrust thus followed Middle to Late Cretaceous collision (circa 90-100 Ma) of the Wrangellia composite terrane with North America. Collision related uplift and erosion of mountains in British Columbia formed a submarine fan on the Farallon plate, and we suggest that attempted subduction of this fan dramatically changed the subduction/accretion style within the Chugach accretionary wedge. We propose a model in which subduction of thinly sedimented plates concentrates shear strains in a narrow zone, generating mélanges like the McHugh in accretionary complexes. Subduction of thickly sedimented plates allows wider distribution of shear strains to accommodate plate convergence, generating a more coherent accretionary style

  10. First record of the bigeye shiner (Notropis boops) from West Virginia

    USGS Publications Warehouse

    Welsh, Stuart; Cincotta, Daniel A.; Raesly, Richard L.

    2016-01-01

    We report a population of Bigeye Shiner Notropis boops in the South Fork Hughes River drainage of the Little Kanawha River, West Virginia. A total of 27 individuals of N. boops were collected during five sampling efforts from 1999 to 2005. These specimens represent an addition to the state fauna, a distributional record for the Little Kanawha River, and an eastern range extension for this species on the Appalachian Plateau, West Virginia. Notropis boops in the South Fork Hughes River drainage likely represents a native population.

  11. Hydrogeologic characteristics of four public drinking-water supply springs in northern Arkansas

    USGS Publications Warehouse

    Galloway, Joel M.

    2004-01-01

    In October 2000, a study was undertaken by the U.S. Geological Survey (USGS) in cooperation with the Arkansas Department of Health to determine the hydrogeologic characteristics, including the extent of the recharge areas, for Hughes Spring, Stark Spring, Evening Shade Spring, and Roaring Spring, which are used for public-water supply in northern Arkansas. Information pertaining to each spring can be used to enable development of effective management plans to protect these water resources and public health. An integrated approach to determine the ground-water characteristics and the extent of the local recharge areas of the four springs incorporated tools and methods of hydrology, structural geology, geomorphology, geophysics, and geochemistry. Analyses of discharge, temperature, and water quality were completed to describe ground-water flow characteristics, source-water characteristics, and connectivity of the ground-water system with surface runoff. Water-level contour maps were constructed to determine ground-water flow directions and ground-water tracer tests were conducted to determine the extent of the recharge areas and ground-water flow velocities. Hughes Spring supplies water for the city of Marshall, Arkansas, and the surrounding area. The mean annual discharge for Hughes Spring was 2.9 and 5.2 cubic feet per second for water years 2001 and 2002, respectively. Recharge to the spring occurs mainly from the Boone Formation (Springfield Plateau aquifer). Ground-water tracer tests indicate the recharge area for Hughes Spring generally coincides with the surface drainage area (15.8 square miles) and that Hughes Spring is connected directly to the surface flow in Brush Creek. The geochemistry of Hughes Spring demonstrated variations with flow conditions and the influence of surface-runoff in the recharge area. Calcite saturation indices, total dissolved solids concentrations, and hardness demonstrate noticeable differences with flow conditions reflecting the

  12. Ensuring Healthy Babies in Upstate New York: Pressing Problems, Promising Strategies. Hearing before the Select Committee on Children, Youth, and Families. House of Representatives, One Hundred First Congress, Second Session (Syracuse, New York, July 16, 1990).

    ERIC Educational Resources Information Center

    Congress of the U.S., Washington, DC. House Select Committee on Children, Youth, and Families.

    Following opening remarks by presiding committee member Matthew F. McHugh, this hearing record begins with a fact sheet inserted into the record which provides information on the following issues: infant mortality in the U.S. and in upstate New York; the inadequacy, unavailablity, or unaffordability of prenatal care; other obstacles to care…

  13. 200 Years of Vocational Education, 1776-1976; The Vocational Education Age Emerges, 1876-1926

    ERIC Educational Resources Information Center

    Barlow, Melvin L.

    1976-01-01

    The beginnings of vocational education are more readily seen during the period 1876-1926. They are characterized by the rise of manual training, trade schools, home economics movements, and agricultural education. The Smith-Hughes Act was passed in response to the demands of the National Society for the Promotion of Industrial Education. (EC)

  14. IMPLEMENTATION OF QUALITY ASSURANCE OF MULTILABORATORY STUDIES WITHIN THE US EPA

    EPA Science Inventory

    Implementation of Quality Assurance on Multilaboratory Studies Within the U. S. EPA
    Thomas J. Hughes1, Brenda Culpepper1, Nancy Adams2, and John Martinson3, 1National Health and Environmental Effects Research Laboratory (NHEERL), 2National Risk Management Research Laboratory...

  15. The Oxford Treasury of Classic Poems.

    ERIC Educational Resources Information Center

    Harrison, Michael, Ed.; Stuart-Clark, Christopher, Ed.

    This book contains over 90 classic poems for children. The collection of poems includes nonsense verse by Lear and Carroll, story poems by Tennyson and Keats, and humorous poems by Belloc and Betjeman. The collection also includes poems by modern poets, such as Charles Causley, Ted Hughes, John Agard, Roger McGough, and Stevie Smith. The…

  16. Focus on: Hendra virus in Australia.

    PubMed

    Hughes, Kristopher

    2014-11-29

    Cases of Hendra virus infection in horses in Australia have been seen regularly since the virus was first isolated in 1994. Kristopher Hughes, associate professor of equine medicine at Charles Sturt University in Australia, gives an overview of how knowledge of the virus has developed in the past 20 years. PMID:25431383

  17. Voyaging on the Seas of Spirit: An Ongoing Journey towards Understanding Disability and Humanity

    ERIC Educational Resources Information Center

    Stienstra, Deborah; Ashcroft, Terri

    2010-01-01

    In an important article in "Disability & Society" Hughes argued that ontology is becoming a "live issue" in disability studies. Different sources, including non-western and aboriginal conceptions of disability and cosmology and the literature on philosophy, religion, palliative and healthcare, suggest that we are missing a critical aspect of…

  18. Religion & Public Schools: Striking a Constitutional Balance. Revised Edition.

    ERIC Educational Resources Information Center

    Gittins, Naomi E., Ed.

    This document provides comprehensive analysis of new key developments in the law regarding the proper relationship between religion and public schools. There are 12 chapters: (1) "The First Amendment and Public Schools: Overview of the Religion Clauses" (John Walsh, Dorine Lawrence-Hughes, and Usi N. Botros); (2) "Prayer on Campus: Thirty Years of…

  19. 75 FR 55342 - Federal Property Suitable as Facilities To Assist the Homeless

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-10

    ... other real property that HUD has reviewed for suitability for use to assist the homeless. The properties... and underutilized buildings and real property controlled by such agencies or by GSA regarding its... FORCE: Mr. Robert Moore, Air Force Real Property Agency, 2261 Hughes Ave., Suite 121, Lackland AFB,...

  20. Good Guys Finish Last: "Tom Brown's School Days" and "Flashman."

    ERIC Educational Resources Information Center

    Riga, Frank P.

    Instructors and students of literature should look to George McDonald Fraser's "Flashman: From the Flashman Papers, 1839-1842" for a clever critique of 19th-century notions of character, virtue, and moral teleology. Written to criticize Thomas Hughes's famous 19th-century novel, "Tom Brown's School Days," Fraser's 20th-century novel turns on end…

  1. METABOLISM OF VINCLOZOLIN AND ITS METABOLITES IN RATS

    EPA Science Inventory

    ETD-04-008

    METABOLISM OF VINCLOZOLIN AND ITS METABOLITES IN RAT. A Sierra-Santoyo1, R Harrison2, H A Barton2 and M F Hughes2. 1Toxicology Section, CINVESTAV-IPN, Mexico City, Mexico; 2USEPA, ORD, NHEERL, RTP, NC.

    Vinclozolin (V) is a fungicide used in agricultural...

  2. HPLC ANALYSIS OF VINCLOZOLIN AND ITS METABOLITES IN SERUM

    EPA Science Inventory


    HPLC ANALYSIS OF VINCLOZOLIN AND ITS METABOLITES IN SERUM. A Sierra-Santoyo1,2, H A Barton1 and M F Hughes1. 1US EPA, ORD, NHEERL, ETD, RTP, NC; 2Toxicology Section, CINVESTAV-IPN, Mexico City, Mexico.

    The fungicide vinclozolin (V) is used predominantly for treatment...

  3. TISSUE DISTRIBUTION OF INORGANIC ARSENIC (AS) AND ITS METHYLATED METABOLITES IN MICE FOLLOWING ORAL ADMINISTRATION OF ARSENATE (ASV)

    EPA Science Inventory

    TISSUE DISTRIBUTION OF INORGANIC ARSENIC (iAs) AND ITS METHYLATED METABOLITES IN MICE FOLLOWING ORAL ADMINISTRATION OF ARSENATE (AsV). E M Kenyon1, L M Del Razo2, and M F Hughes1. 1NHEERL, ORD, US EPA, RTP, NC, USA; 2CINVESTAV-IPN, Mexico City, Mexico.

    The relationship o...

  4. COMPARATIVE TISSUE DISTRIBUTION AND URINARY EXCRETION OF INORGANIC ARSENIC (IAS) AND ITS METHYLATED METABOLITES IN MICE FOLLOWING ORAL ADMINISTRATION OF ARSENATE (ASV) AND ARSENITE (ASIII)

    EPA Science Inventory

    COMPARATIVE TISSUE DISTRIBUTION AND URINARY EXCRETION OF INORGANIC ARSENIC (iAs) AND ITS METHYLATED METABOLITES IN MICE FOLLOWING ORAL ADMINISTRATION OF ARSENATE (AsV) AND ARSENITE (AsIII). E M Kenyon, L M Del Razo and M F Hughes. U.S. EPA, ORD, NHEERL, ETD, PKB, RTP, NC, USA; ...

  5. Magnetic wormholes and vertex operators

    SciTech Connect

    Singh, H. )

    1994-10-15

    We consider wormhole solutions in 2+1 Euclidean dimensions. A duality transformation is introduced to derive a new action from the magnetic wormhole action of Gupta, Hughes, Preskill, and Wise. The classical solution is presented. The vertex operators corresponding to the wormhole are derived. Conformally coupled scalars and spinors are considered in the wormhole background and the vertex operators are computed.

  6. Ezra Pound: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Sutton, Walter, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Walter Sutton, William Butler Yeats, William Carlos Williams, T. S. Eliot, F. R. Leavis, Hugh Kenner, M. L. Rosenthal, Forrest Read, David W. Evans, W. M. Frohock, Harold H. Watts, Earl Miner, Murray Schafer, J. P.…

  7. History of Agricultural Education in America: The Great Individuals and Events.

    ERIC Educational Resources Information Center

    Camp, William G.; Crunkilton, John R.

    1985-01-01

    A study was conducted to identify the greatest individuals and events in the history of the profession of agriculture education. A panel of members of the profession was used to generate the lists. Individuals included Ralph Bender and Clarence Bundy. Events included the Smith-Hughes Act and the establishment of Future Farmers of America. (CT)

  8. Correlates of Level and Change in the Mini-Mental State Examination

    ERIC Educational Resources Information Center

    Soubelet, Andrea; Salthouse, Timothy A.

    2011-01-01

    The goal of the current project was to determine (a) the cognitive abilities assessed by the Mini Mental State Examination (MMSE; M. F. Folstein, S. E. Folstein, & P. R. McHugh, 1975), (b) whether the same abilities are associated with MMSE performance among people of different ages, and (c) whether the same abilities are involved in changes…

  9. Advancing International Education. New Directions for Community Colleges, Number 26.

    ERIC Educational Resources Information Center

    King, Maxwell C., Ed.; Breuder, Robert I., Ed.

    1979-01-01

    Twelve essays examine issues related to community college involvement in international education. Hugh Adams explores the role of community colleges in international education. S. V. Martorana and William Shannon present a framework for program planning. Sydney Grant examines strategies for internationalizing the curriculum. Seymour Fersh…

  10. Language and Learning: Educating Linguistically Diverse Students.

    ERIC Educational Resources Information Center

    McLeod, Beverly, Ed.

    A collection of essays on teaching linguistically diverse student populations includes: "Linguistic Diversity and Academic Achievement" (Beverly McLeod); "The Impact of the Education Reform Movement on Limited English Proficient Students" (Patricia Gandara); "The Role of Discourse in Learning, Schooling, and Reform" (Hugh Mehan); "The Values of a…