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Sample records for larminie andrew dicks

  1. Moby Dick.

    ERIC Educational Resources Information Center

    Stern, Milton R.

    1986-01-01

    Discusses examples in "Moby Dick" of Melvillean words symptomatic of the significance of Ishmael's rhetorical energy, in order to suggest that Ishmael's language reflects Melville's search for lexical and rhetorical forms that express the democratic impulse. (SRT)

  2. Interview with Dick Whiteside

    ERIC Educational Resources Information Center

    Winarski, Kathy

    2005-01-01

    Dick Whiteside, Vice President for Enrollment Management at Tulane University, is one of the leading strategists in the field of enrollment management. Dr. Whiteside has held influential positions at the University of Hartford, in West Hartford, Connecticut, The Johns Hopkins University in Baltimore, Maryland, the City University of New York in…

  3. Interview with Dick Whiteside

    ERIC Educational Resources Information Center

    Winarski, Kathy

    2005-01-01

    Dick Whiteside, Vice President for Enrollment Management at Tulane University, is one of the leading strategists in the field of enrollment management. Dr. Whiteside has held influential positions at the University of Hartford, in West Hartford, Connecticut, The Johns Hopkins University in Baltimore, Maryland, the City University of New York in…

  4. Monodromy in Dicke superradiance

    NASA Astrophysics Data System (ADS)

    Kloc, Michal; Stránský, Pavel; Cejnar, Pavel

    2017-08-01

    We study the focus-focus type of monodromy in an integrable version of the Dicke model. Classical orbits forming a pinched torus represent analogues of the dynamic superradiance under conditions of a closed system. Quantum signatures of monodromy appear in lattices of expectation values of various quantities in the Hamiltonian eigenstates and are related to an excited-state quantum phase transition. We demonstrate the breakdown of these structures with an increasing strength of non-integrable perturbation.

  5. Interview with Deborah Andrews

    ERIC Educational Resources Information Center

    Ryan, Cynthia

    2005-01-01

    This article presents an interview with Deborah Andrews about her experiences during her editorship of "Business Communication Quarterly." From June 1997 to March 2005, Debby served as editor of the journal, encouraging all readers to ask important questions about their work: How should we define business communication? On which disciplines and…

  6. Andrew W. S. In

    ERIC Educational Resources Information Center

    Nishimoto, Warren

    2007-01-01

    This article presents an interview with Andrew W. S. In, professor and dean in the University of Hawai'i's College of Education from 1951 to 1984. Born and raised in Honolulu, In attended Royal Elementary, Central Junior High, and McKinley High schools, graduating from McKinley in 1938. He then attended the University of Hawai'i Teachers College…

  7. Interview with Deborah Andrews

    ERIC Educational Resources Information Center

    Ryan, Cynthia

    2005-01-01

    This article presents an interview with Deborah Andrews about her experiences during her editorship of "Business Communication Quarterly." From June 1997 to March 2005, Debby served as editor of the journal, encouraging all readers to ask important questions about their work: How should we define business communication? On which disciplines and…

  8. Andrew: CMU's New Computing Environment.

    ERIC Educational Resources Information Center

    Zabowski, Susan

    1986-01-01

    Reviews the progress and problems associated with the development of Carnegie Mellon University's new computing and communications system, "Andrew." Describes the accomplishments and capacities of the system and provides examples of the programs developed for "Andrew." (ML)

  9. Andrew integrated reservoir description

    SciTech Connect

    Todd, S.P.

    1996-12-31

    The Andrew field is an oil and gas accumulation in Palaeocene deep marine sands in the Central North Sea. It is currently being developed with mainly horizontal oil producers. Because of the field`s relatively small reserves (mean 118 mmbbls), the performance of each of the 10 or so horizontal wells is highly important. Reservoir description work at sanction time concentrated on supporting the case that the field could be developed commercially with the minimum number of wells. The present Integrated Reservoir Description (IRD) is focussed on delivering the next level of detail that will impact the understanding of the local reservoir architecture and dynamic performance of each well. Highlights of Andrew IRD Include: (1) Use of a Reservoir Uncertainty Statement (RUS) developed at sanction time to focus the descriptive effort of both asset, support and contract petrotechnical staff, (2) High resolution biostratigraphic correlation to support confident zonation of the reservoir, (3) Detailed sedimentological analysis of the core including the use of dipmeter to interpret channel/sheet architecture to provide new insights into reservoir heterogeneity; (4) Integrated petrographical and petrophysical investigation of the controls on Sw-Height and relative permeability of water; (5) Fluids description using oil geochemistry and Residual Salt Analysis Sr isotope studies. Andrew IRD has highlighted several important risks to well performance, including the influence of more heterolithic intervals on gas breakthrough and the controls on water coning exerted by suppressed water relative permeability in the transition zone.

  10. Andrew integrated reservoir description

    SciTech Connect

    Todd, S.P.

    1996-01-01

    The Andrew field is an oil and gas accumulation in Palaeocene deep marine sands in the Central North Sea. It is currently being developed with mainly horizontal oil producers. Because of the field's relatively small reserves (mean 118 mmbbls), the performance of each of the 10 or so horizontal wells is highly important. Reservoir description work at sanction time concentrated on supporting the case that the field could be developed commercially with the minimum number of wells. The present Integrated Reservoir Description (IRD) is focussed on delivering the next level of detail that will impact the understanding of the local reservoir architecture and dynamic performance of each well. Highlights of Andrew IRD Include: (1) Use of a Reservoir Uncertainty Statement (RUS) developed at sanction time to focus the descriptive effort of both asset, support and contract petrotechnical staff, (2) High resolution biostratigraphic correlation to support confident zonation of the reservoir, (3) Detailed sedimentological analysis of the core including the use of dipmeter to interpret channel/sheet architecture to provide new insights into reservoir heterogeneity; (4) Integrated petrographical and petrophysical investigation of the controls on Sw-Height and relative permeability of water; (5) Fluids description using oil geochemistry and Residual Salt Analysis Sr isotope studies. Andrew IRD has highlighted several important risks to well performance, including the influence of more heterolithic intervals on gas breakthrough and the controls on water coning exerted by suppressed water relative permeability in the transition zone.

  11. Stories Along the Way: Andrew

    ERIC Educational Resources Information Center

    Kittle, Penny

    2009-01-01

    Andrew is among the forgotten, the written-off, the hopeless...at least to many of the adults in his life--police, teachers, even family. But when you see that glimmer, that potential, you can't turn your back. Andrew stands as a person, but also a metaphor for believing that each student has a chance to succeed.

  12. Mortality from Hurricane Andrew.

    PubMed

    Lew, E O; Wetli, C V

    1996-05-01

    Hurricane Andrew, a category 4 storm, made landfall in South Florida on August 24, 1992, and caused extensive structural and environmental damage. The Dade County Medical Examiner Department investigated 15 deaths directly related to the storm and another 15 natural deaths indirectly related to the storm. The aftermath of the hurricane continued to create circumstances that lead to 32 accidental deaths, five suicides, and four homicides over the next six months. Traffic fatalities due to uncontrolled intersections accounted for one-third of the post-storm accidental deaths. Dyadic deaths (homicide-suicide) doubled in rate for the six months following the storm. The limited number of direct hurricane deaths is attributed to advance storm warnings, its occurrence on a weekend, the storm's passage through less populated areas of the county, and the relatively modest amount of accompanying rainfall.

  13. Andrew spares Florida Coast

    NASA Astrophysics Data System (ADS)

    Bush, Susan

    When geologists heard of the intensity of Hurricane Andrew, which struck the Florida coast on August 25 and then moved on to southern Louisiana, they were expecting the same kinds of coastal damage that Hurricane Hugo brought to the Caribbean and Carolina shores in 1989. Both storms were category 4 hurricanes, having winds of 131-155 mph and surges of 13-18 feet. However, the coastal damage never materialized, leaving geologists to analyze the factors that lessened the impact of the storm. “For minimum coastal damage, you couldn't have designed a better storm,” said Orrin Pilkey, director of the Program for the Study of Developed Shorelines (PSDS) in Durham, N.C. This was due in part to the nature of the storm itself and where it hit land, and in part to the regional geology, said Rob Thieler of PSDS. Despite the huge amounts of damage to buildings, there was virtually no evidence of coastal process destruction, he said.

  14. Faces of Marshall: Erika Andrews

    NASA Image and Video Library

    Several Marshall employees were interviewed as part of Marshall's 50th Anniversary activities. Human Resources Specialist Erika Andrews tells how she came to work at NASA as a specialist in organiz...

  15. Moby-Dick. [Lesson Plan].

    ERIC Educational Resources Information Center

    Soderquist, Alisa

    Based on Herman Melville's novel "Moby-Dick," this lesson plan presents activities designed to help students understand that the novel is grounded in facts that Melville acquired in his own experiences at sea; New England was the center of a prospering whaling industry in the 19th century; and journal keeping was not uncommon among 19th-century…

  16. Libraries and Andrew Carnegie's Challenge.

    ERIC Educational Resources Information Center

    Gregorian, Vartan

    This essay by the president of the Carnegie Corporation of New York (reprinted from the 1998 annual report) opens by noting that the year 1999 marks the 100th anniversary of Andrew Carnegie's support for the planning and development of 65 branch libraries of the New York Public Library System, a gift that came to more than $5.2 million. Discussion…

  17. Andrew A. Benson: personal recollections.

    PubMed

    Nonomura, Arthur; Lorimer, George; Holtz, Barry; Vacquier, Victor; Biel, Karl Y; Govindjee

    2016-03-01

    Andrew A. Benson, one of the greatest and much loved scientists of our century, passed away on January 16, 2015; he was born on September 24, 1917. A grand celebration of his life was held on February 6, 2015, in California. Here, we present one of his photographs and key excerpts from what was said then, and soon thereafter.

  18. The Americas and Hurricane Andrew

    NASA Technical Reports Server (NTRS)

    1992-01-01

    Image taken on August 25, 1992 by NOAA GOES-7 of the Americas and Hurricane Andrew.

    Photo Credit: Image produced by F. Hasler, M. Jentoft-Nilsen, H. Pierce, K. Palaniappan, and M. Manyin. NASA Goddard Lab for Atmospheres - Data from National Oceanic and Atmospheric Administration (NOAA).

  19. Benevolent Builder: Appraising Andrew Carnegie.

    ERIC Educational Resources Information Center

    Deitch, Joseph

    1984-01-01

    Discussion of Andrew Carnegie era in American public library history focuses on library buildings financed and built in Philadelphia, Pennsylvania. The building design which Carnegie developed, surviving Carnegie libraries in Philadelphia, procedures for obtaining a library, and comparison of architectural attractiveness of Carnegie libraries with…

  20. Comment on 'New Brans-Dicke wormholes'

    SciTech Connect

    Bhadra, Arunava; Simaciu, Ion; Nandi, Kamal Kanti; Zhang Yuanzhong

    2005-06-15

    It is shown that the recently claimed two new Brans-Dicke wormhole solutions [F. He and S-W. Kim, Phys. Rev. D 65, 084022 (2002)] are not really new solutions. They are just the well known Brans-Dicke solutions of Class I and II in a different conformal gauge.

  1. Brans-Dicke cylindrical wormholes

    SciTech Connect

    Eiroa, Ernesto F.; Simeone, Claudio

    2010-10-15

    Static axisymmetric thin-shell wormholes are constructed within the framework of the Brans-Dicke scalar-tensor theory of gravity. Examples of wormholes associated with vacuum and electromagnetic fields are studied. All constructions must be threaded by exotic matter, except in the case of geometries with a singularity of finite radius, associated with an electric field, which can have a throat supported by ordinary matter. These results are achieved with any of the two definitions of the flare-out condition considered.

  2. Brans-Dicke cylindrical wormholes

    NASA Astrophysics Data System (ADS)

    Eiroa, Ernesto F.; Simeone, Claudio

    2010-10-01

    Static axisymmetric thin-shell wormholes are constructed within the framework of the Brans-Dicke scalar-tensor theory of gravity. Examples of wormholes associated with vacuum and electromagnetic fields are studied. All constructions must be threaded by exotic matter, except in the case of geometries with a singularity of finite radius, associated with an electric field, which can have a throat supported by ordinary matter. These results are achieved with any of the two definitions of the flare-out condition considered.

  3. The McAndrews Leadership Lecture: Origins

    PubMed Central

    Hamm, Anthony W.; Burkhart, Lori A.

    2015-01-01

    Objective This article describes the origins and rationale for the McAndrews Leadership Lecture and explains why the American Chiropractic Association honors George and Jerome McAndrews. Discussion George and Jerome McAndrews’ backgrounds demonstrate their leadership contributions to the chiropractic profession. Jerome McAndrews, a chiropractor, held substantial leadership roles in the chiropractic profession. George McAndrews, a lawyer, administered a permanent injunction forbidding the American Medical Association’s restraint of trade toward the chiropractic profession. Conclusion The American Chiropractic Association has established the McAndrews Leadership Lecture to honor their contributions to the chiropractic profession. PMID:26770176

  4. Cosmic acceleration and Brans-Dicke theory

    SciTech Connect

    Sharif, M. Waheed, S.

    2012-10-15

    We study the accelerated expansion of the universe by exploring the Brans-Dicke parameter in different eras. For this, we take the FRW universe model with a viscous fluid (without potential) and the Bianchi type-I universe model with a barotropic fluid (with and without a potential). We evaluate the deceleration parameter and the Brans-Dicke parameter to explore cosmic acceleration. It is concluded that accelerated expansion of the universe can also be achieved for higher values of the Brans-Dicke parameter in some cases.

  5. Generalized Brans-Dicke theories

    SciTech Connect

    De Felice, Antonio; Tsujikawa, Shinji E-mail: shinji@rs.kagu.tus.ac.jp

    2010-07-01

    In Brans-Dicke theory a non-linear self interaction of a scalar field φ allows a possibility of realizing the late-time cosmic acceleration, while recovering the General Relativistic behavior at early cosmological epochs. We extend this to more general modified gravitational theories in which a de Sitter solution for dark energy exists without using a field potential. We derive a condition for the stability of the de Sitter point and study the background cosmological dynamics of such theories. We also restrict the allowed region of model parameters from the demand for the avoidance of ghosts and instabilities. A peculiar evolution of the field propagation speed allows us to distinguish those theories from the ΛCDM model.

  6. Distributed-switch Dicke radiometers

    NASA Technical Reports Server (NTRS)

    Levis, C. A. (Inventor)

    1979-01-01

    A radiometer on an orbiting spacecraft is described which derives high spatial resolution information from terrestrial and atmospheric regions. The N elements or subapertures on the spacecraft transduce electromagnetic energy into electric signals. Many or all of the elements are simultaneously illuminated by electromagnetic energy radiated from the same region. Identical, parallel processing channels are responsive to the N elements. Each of the channels includes a variable gain amplifier responsive to the signal transduced by its corresponding array elements. The gain of each amplifier is controlled as a function of the output difference when the channel is connected periodically to each of a pair of Dicke noise sources, such as resistors maintained at predetermined temperatures.

  7. H.J. Andrews Experimental Forest.

    Treesearch

    Art McKee; Pamela. Druliner

    1998-01-01

    The H.J. Andrews Experimental Forest is a world renowned center for research and education about the ecology and management of forests and streams. Located about 50 miles (80 km) east of Eugene, Oregon, the Andrews Experimental Forest lies in the Blue River Ranger District of the Willamette National Forest. Established in 1948, the Experimental Forest is administered...

  8. The Impeachment of Andrew Johnson. Web Lesson.

    ERIC Educational Resources Information Center

    Constitutional Rights Foundation, Los Angeles, CA.

    This lesson presents the historical background of Abraham Lincoln's selection of Andrew Johnson as his running mate in the election of 1864. The lesson considers the climate in the U.S. Congress after President Lincoln's assassination. The details of the impeachment and trial of President Andrew Johnson are given. The lesson presents three…

  9. Psychiatric morbidity following Hurricane Andrew.

    PubMed

    David, D; Mellman, T A; Mendoza, L M; Kulick-Bell, R; Ironson, G; Schneiderman, N

    1996-07-01

    The nature of psychiatric morbidity in previously non-ill subjects from the area most affected by Hurricane Andrew was investigated at 6-12 months posthurricane. Preliminary associations of morbidity with personal and event-related risk factors were also determined. Fifty one percent (31/61) met criteria for a new-onset disorder, including posttraumatic stress disorder (PTSD) in 36%, major depression (MD) in 30%, and other anxiety disorders in 20%. Thirty four subjects (56%) had significant symptoms persisting beyond 6 months. Having sustained "severe damage" was the risk factor most strongly associated with outcome. Our data underscore the range of psychiatric morbidity related to a natural disaster, and suggest a relationship to chronic stressors.

  10. The complete Brans-Dicke theories

    NASA Astrophysics Data System (ADS)

    Kofinas, Georgios

    2017-01-01

    Given that the simple wave equation of Brans-Dicke theory for the scalar field is preserved, we have investigated, through exhaustively analyzing the Bianchi identities, the consistent theories which violate the exact energy conservation equation. It is found that only three theories exist which are unambiguously determined from consistency, without imposing arbitrary functions by hand. Each of these theories possesses a specific interaction term which controls the energy exchange between the scalar field and ordinary matter. The theories contain new parameters (integration constants from the integration procedure) and when these are switched-off, Brans-Dicke theory emerges. As usually, the vacuum theories can be defined from the complete Brans-Dicke theories when the matter energy-momentum tensor vanishes.

  11. Detecting multiparticle entanglement of Dicke states.

    PubMed

    Lücke, Bernd; Peise, Jan; Vitagliano, Giuseppe; Arlt, Jan; Santos, Luis; Tóth, Géza; Klempt, Carsten

    2014-04-18

    Recent experiments demonstrate the production of many thousands of neutral atoms entangled in their spin degrees of freedom. We present a criterion for estimating the amount of entanglement based on a measurement of the global spin. It outperforms previous criteria and applies to a wider class of entangled states, including Dicke states. Experimentally, we produce a Dicke-like state using spin dynamics in a Bose-Einstein condensate. Our criterion proves that it contains at least genuine 28-particle entanglement. We infer a generalized squeezing parameter of -11.4(5)  dB.

  12. Obituary: Andrew Stephen Wilson, 1947-2008

    NASA Astrophysics Data System (ADS)

    Veilleux, Sylvain

    2009-01-01

    On 24 May 2008, Andrew Stephen Wilson passed away at the age of 61, in his home in Silver Spring, Maryland, from complications resulting from a painful spinal illness. Andrew was arguably one of the first truly multi-wavelength astronomers of his generation. His scientific work on active galactic nuclei [AGN] spanned the entire electromagnetic spectrum from the radio to the X-rays. Andrew was born in Doncaster, Yorkshire, England, on 26 March 1947. He was the younger of two brothers whose births were separated by the Second World War. His father, Norman, came from a relatively affluent family who were coal merchants. His mother, Mary, came from a less comfortable background, one of seven children, daughter of a skilled cabinet maker/French polisher, who went through a very hard time during the depression. As a teacher, she placed enormous value on hard work and education as a way of gaining advancement in life. When Andrew was four, the family moved to Skipton, a nice market town in the Yorkshire dales. Andrew went to a small village school until age eleven when he entered Ermysted's Grammar School. He was an enthusiastic soccer and cricket player. He never lost his enthusiasm for soccer and supported the local soccer team, Leeds United, for all his life. Andrew also followed the Yorkshire county cricket team. Andrew's interest in astronomy stemmed from the fact that at Ermysted's Grammar School someone donated a four-inch refracting telescope, so he and his friends used to go back in the evenings to investigate the rings of Saturn, the moons of Jupiter, and various nebulae. While an undergraduate at Cambridge, Andrew joined the astronomy club and ground an 8-inch mirror by hand as a part of a telescope that he set up in the backyard of his parents' house. Andrew spent hours observing with this telescope, and it was the wonder of the family. At Cambridge, Andrew obtained his bachelor's degree with first-class honors in 1969. During a short visit in London with his

  13. Andrew Benson honored on birthday № 97.

    PubMed

    Buchanan, Bob B; Douce, Roland

    2015-02-01

    We present a brief account of the 97th birthday celebration of Andrew A. Benson, a scientific legend who is known, among other contributions, for his pioneering work on the path of carbon in photosynthesis (the Calvin-Benson cycle).

  14. Kulusuk Icebergs, by Andrew Bossi

    NASA Image and Video Library

    2017-09-27

    GPM "Let it Snow" Photo Contest Winners The Global Precipitation Measurement mission is happy to announce the top ten winners of the "Let It Snow" photo competition. Thank you to everyone who submitted their best pictures of winter. From January 7th through February 4th 2013, over 1,000 photos were submitted via Flickr and Instagram (see the Flickr submissions here: bit.ly/VVEubh). We loved all of your entries and thoroughly appreciate your participation. About this image: Kulusuk Icebergs, by Andrew Bossi Location: On approach to the airstrip at Kulusuk, Greenland, located on the east coast. The flight departed out of Reykjavík, Iceland. How this Photo Was Taken: "My write-up of the day covers things in decent detail. Basically my vacation was focused on Scandinavia and hadn't even considered Greenland, but while traveling around Iceland I'd become aware that day trips were offered and I leapt at the opportunity. This approach was my first sight of Greenland. While I've seen plenty of glaciers and mountains, I'd never seen anything like this - it started with endless fields of ice amid the deep blue sea, and some minutes later a wall of frozen rock rose up from the horizon. I'd never seen anything so beautiful. I think my camera's shutter was snapping almost endlessly right up until we landed. The landing itself was an experience, as our tiny plane descended between the mountains -- rockfaces just outside each window -- and set down on a gravel runway." About Photographer Steven Sandner: More info about this photo: intentionallylost.blogspot.com/2011/06/gl-kulusuk.htm www.flickr.com/photos/thisisbossi/ twitter.com/thisisbossi NASA image use policy. NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. Follow us on

  15. A Reanalysis of Hurricane Andrew's Intensity.

    NASA Astrophysics Data System (ADS)

    Landsea, Christopher W.; Franklin, James L.; McAdie, Colin J.; Beven, John L., II; Gross, James M.; Jarvinen, Brian R.; Pasch, Richard J.; Rappaport, Edward N.; Dunion, Jason P.; Dodge, Peter P.

    2004-11-01

    Hurricane Andrew of 1992 caused unprecedented economic devastation along its path through the Bahamas, southeastern Florida, and Louisiana. Damage in the United States was estimated to be $26 billion (in 1992 dollars), making Andrew one of the most expensive natural disasters in U.S. history. This hurricane struck southeastern Florida with maximum 1-min surface winds estimated in a 1992 poststorm analysis at 125 kt (64 m s-1). This original assessment was primarily based on an adjustment of aircraft reconnaissance flight-level winds to the surface.Based on recent advancements in the understanding of the eyewall wind structure of major hurricanes, the official intensity of Andrew was adjusted upward for five days during its track across the Atlantic Ocean and Gulf of Mexico by the National Hurricane Center Best Track Change Committee. In particular, Andrew is now assessed by the National Hurricane Center to be a Saffir Simpson Hurricane Scale category-5 hurricane (the highest intensity category possible) at its landfall in southeastern Florida, with maximum 1-min winds of 145 kt (75 m s-1). This makes Andrew only the third category-5 hurricane to strike the United States since at least 1900. Implications for how this change impacts society's planning for such extreme events are discussed.

  16. Nonergodicity in the Anisotropic Dicke Model

    NASA Astrophysics Data System (ADS)

    Buijsman, Wouter; Gritsev, Vladimir; Sprik, Rudolf

    2017-02-01

    We study the ergodic-nonergodic transition in a generalized Dicke model with independent corotating and counterrotating light-matter coupling terms. By studying level statistics, the average ratio of consecutive level spacings, and the quantum butterfly effect (out-of-time correlation) as a dynamical probe, we show that the ergodic-nonergodic transition in the Dicke model is a consequence of the proximity to the integrable limit of the model when one of the couplings is set to zero. This can be interpreted as a hint for the existence of a quantum analogue of the classical Kolmogorov-Arnold-Moser theorem. In addition, we show that there is no intrinsic relation between the ergodic-nonergodic transition and the precursors of the normal-superradiant quantum phase transition.

  17. Cell scientist to watch - Andrew Holland.

    PubMed

    2017-02-01

    Andrew received his first degree in natural sciences from the University of Cambridge and a Masters degree from the University of Manchester, followed by a PhD with Stephen Taylor in Manchester. He then moved to California in 2007 with an EMBO long-term fellowship for his postdoctoral research with Don Cleveland at the Ludwig Institute for Cancer Research. In 2013, Andrew started his own lab as an Assistant Professor in the Department of Molecular Biology and Genetics at the Johns Hopkins University School of Medicine, having been named a Kimmel Scholar and a Pew-Stewart Scholar in 2014. Andrew's lab investigates the mechanisms controlling centrosome copy numbers during cell division and the links between centrosome amplification, genome instability and tumorigenesis.

  18. Congruences for the Andrews spt function

    PubMed Central

    Ono, Ken

    2011-01-01

    Ramanujan-type congruences for the Andrews spt(n) partition function have been found for prime moduli 5 ≤ ℓ ≤ 37 in the work of Andrews [Andrews GE, (2008) J Reine Angew Math 624:133–142] and Garvan [Garvan F, (2010) Int J Number Theory 6:1–29]. We exhibit unexpectedly simple congruences for all ℓ≥5. Confirming a conjecture of Garvan, we show that if ℓ≥5 is prime and , then (mod ℓ). This congruence gives (ℓ - 1)/2 arithmetic progressions modulo ℓ3 which support a mod ℓ congruence. This result follows from the surprising fact that the reduction of a certain mock theta function modulo ℓ, for every ℓ≥5, is an eigenform of the Hecke operator T(ℓ2). PMID:21177432

  19. Andrew A. Benson, 1917-2015.

    PubMed

    Lichtenthaler, Hartmut K; Buchanan, Bob B; Douce, Roland; Govindjee

    2015-05-01

    On January 16, 2015, Professor Andrew Alm Benson, one of the leading plant biochemists of the twentieth century, died in La Jolla, California, at the age of 97; he was born on September 24, 1917. Benson was known especially for his pioneering studies on photosynthesis (CO2 assimilation, carbon reduction cycle) and plant lipids (phospholipid phosphatidyl glycerol; and the sulfolipid, sulfoquinovosyl diglyceride). A photograph of Benson is shown in Fig. 1. Fig. 1 Photograph of Andrew A. Benson. Annual Review of Plant Biology, Vol. 53, 2002, published with permission.

  20. Selective control of the symmetric Dicke subspace in trapped ions

    SciTech Connect

    Lopez, C. E.; Retamal, J. C.; Solano, E.

    2007-09-15

    We propose a method of manipulating selectively the symmetric Dicke subspace in the internal degrees of freedom of N trapped ions. We show that the direct access to ionic-motional subspaces, based on a suitable tuning of motion-dependent ac Stark shifts, induces a two-level dynamics involving previously selected ionic Dicke states. In this manner, it is possible to produce, sequentially and unitarily, ionic Dicke states with increasing excitation number. Moreover, we propose a probabilistic technique to produce directly any ionic Dicke state assuming suitable initial conditions.

  1. Andrew Ryscavage | Center for Cancer Research

    Cancer.gov

    Andrew Ryscavage October 11 Manager, Federal Practice Deloitte Consulting LLP 1919 N Lynn St, Arlington, VA 22209 Tel/Direct: +1 571 858 1488 | Fax: +1 855 857 0592 | Mobile: +1 202 213 0890aryscavage@deloitte.com | www.deloitte.com Topic: “Strategy consulting in life sciences and health care”

  2. Andrew's Aftermath: Hurricane "Saves" Miami Public Library.

    ERIC Educational Resources Information Center

    St. Lifer, Evan

    1994-01-01

    Examines the impact of Hurricane Andrew on the Miami-Dade Public Library System (MDPLS). Topics discussed include the community's response to the sudden lack of library services; the use of library branches as emergency relief centers and communications centers; library disaster policies; and visions for MDPLS under a new director. (LRW)

  3. What We Talk around when We Talk about "The Dick"

    ERIC Educational Resources Information Center

    Savage, Elizabeth

    2011-01-01

    Some years ago, the author had her first opportunity to teach an undergraduate American Romanticism course, which meant she had a chance to teach "Moby-Dick" the way she thought it should be taught. Meeting two days a week, her course was set up so that students read about thirty pages of "Moby-Dick" for one class meeting a week paired with…

  4. Brans-Dicke scalar field as a chameleon

    SciTech Connect

    Das, Sudipta; Banerjee, Narayan

    2008-08-15

    In this paper it is shown that in Brans-Dicke theory, if one considers a nonminimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the Universe preceded by a decelerated expansion for very high values of the Brans-Dicke parameter {omega}.

  5. Electrically tunable Dicke effect in a double-ring resonator

    SciTech Connect

    Cetin, A. E.; Muestecaplioglu, Oe. E.

    2010-04-15

    We study the finite-element method analysis of the Dicke effect using numerical simulations in an all-optical system of an optical waveguide side-coupled to two interacting ring resonators in a liquid crystal environment. The system is shown to exhibit all the signatures of the Dicke effect under active and reversible control by an applied voltage.

  6. Brane cosmic string compactification in Brans-Dicke theory

    SciTech Connect

    Abdalla, M. C. B.; Hoff da Silva, J. M.; Guimaraes, M. E. X.

    2007-04-15

    We investigate an alternative compactification of extra dimensions using local cosmic string in the Brans-Dicke gravity framework. In the context of dynamical systems it is possible to show that there exist a stable field configuration for the Einstein-Brans-Dicke equations. We explore the analogies between this particular model and the Randall-Sundrum scenario.

  7. What We Talk around when We Talk about "The Dick"

    ERIC Educational Resources Information Center

    Savage, Elizabeth

    2011-01-01

    Some years ago, the author had her first opportunity to teach an undergraduate American Romanticism course, which meant she had a chance to teach "Moby-Dick" the way she thought it should be taught. Meeting two days a week, her course was set up so that students read about thirty pages of "Moby-Dick" for one class meeting a week paired with…

  8. Dynamical symmetries in Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Papagiannopoulos, G.; Barrow, John D.; Basilakos, S.; Giacomini, A.; Paliathanasis, A.

    2017-01-01

    In the context of generalized Brans-Dicke cosmology we use the Killing tensors of the minisuperspace in order to determine the unspecified potential of a scalar-tensor gravity theory. Specifically, based on the existence of contact symmetries of the field equations, we find four types of potentials which provide exactly integrable dynamical systems. We investigate the dynamical properties of these potentials by using a critical point analysis and we find solutions which lead to cosmic acceleration and under specific conditions we can have de-Sitter points as stable late-time attractors.

  9. Obituary: Andrew Lange (1957-2010)

    NASA Astrophysics Data System (ADS)

    Kamionkowski, Marc

    2011-12-01

    The worlds of physics and astrophysics were stunned to learn on 22 January 2010 that Andrew Lange, the Marvin L. Goldberger Professor of Physics at Caltech, had taken his own life the night before. He had succumbed to the severe depression that he had suffered from for many years, unbeknownst to even his closest colleagues. Lange will perhaps be best remembered as the co-leader of Boomerang, the balloon-borne experiment that provided the first high-angular-resolution map of the cosmic microwave background (CMB). And while this was certainly his most notable achievement, Andrew amassed a record of accomplishment as an instrumentalist, leader, mentor, and communicator that extended much further. Andrew was born in Urbana, Illinois on July 23, 1957, the son of an architect and a librarian, and raised primarily in Connecticut. His family and early friends remember him as a serious and extremely intelligent child and young man. Andrew Lange's lifelong interest in the CMB was nurtured as an undergraduate at Princeton University by David Wilkinson, and he recalled fondly a summer spent working with John Mather at Goddard Space Flight Center. Andrew Lange went to graduate school in physics at Berkeley where he worked in Paul Richards' group. Although his thesis project, the Berkeley-Nagoya rocket experiment, showed an anomalous sub-millimeter excess in the CMB spectrum that was shortly thereafter shown by a later flight of the same rocket and COBE-FIRAS to be incorrect, Lange's talents were recognized by the physics department at Berkeley who appointed him shortly after his PhD (1987) to their faculty. While on the Berkeley faculty, Andrew obtained early detections of the Sunyaev-Zeldovich effect, upper limits to small-angle CMB fluctuations, and important infrared constraints to the interstellar medium. He also led a pioneering instrument operating 300 mK detectors for a small infrared satellite experiment. This early work showed high ambition and daring, and it pioneered

  10. Approximated integrability of the Dicke model

    NASA Astrophysics Data System (ADS)

    Relaño, A.; Bastarrachea-Magnani, M. A.; Lerma-Hernández, S.

    2016-12-01

    A very approximate second integral of motion of the Dicke model is identified within a broad energy region above the ground state, and for a wide range of values of the external parameters. This second integral, obtained from a Born-Oppenheimer approximation, classifies the whole regular part of the spectrum in bands, coming from different semi-classical energy surfaces, and labelled by its corresponding eigenvalues. Results obtained from this approximation are compared with exact numerical diagonalization for finite systems in the superradiant phase, obtaining a remarkable accord. The region of validity of our approach in the parameter space, which includes the resonant case, is unveiled. The energy range of validity goes from the ground state up to a certain upper energy where chaos sets in, and extends far beyond the range of applicability of a simple harmonic approximation around the minimal energy configuration. The upper energy validity limit increases for larger values of the coupling constant and the ratio between the level splitting and the frequency of the field. These results show that the Dicke model behaves like a two-degree-of-freedom integrable model for a wide range of energies and values of the external parameters.

  11. Interview with Justin Davies and Andrew Tochterman.

    PubMed

    Davies, Justin; Tochterman, Andrew

    2017-07-01

    Justin Davies and Andrew Tochterman speak to Adam Price-Evans, Commissioning Editor of Future Cardiology: Justin Davies is a Senior Research Fellow and Honorary Consultant Cardiologist at the National Heart and Lung Institute, Imperial College London (UK). His main research interests include the development and application of pioneering technologies in engineering to aid understanding of disease mechanisms, and in the diagnosis of pathological disease states. After completing his undergraduate training at Imperial College, he was awarded a prestigious British Heart Foundation research fellowship to undertake his PhD at Imperial College. Since then, he has trained in interventional cardiology with a specialist interest in physiological and structural assessment of coronary disease states. In 2008, he was appointed as a Walport Clinical Lecturer to support his research activities alongside his ongoing clinical commitments. Born in Greentown, Indiana (USA), Andrew holds a BSc in Chemical Engineering from Rose-Hulman Institute of Technology (IN, USA) and an MBA from the Wharton Business School (PA, USA). His experience includes roles in Quality Engineering, R&D, Clinical & Product Marketing, Marketing Management and Sales at Guidant Corporation/Abbott Vascular. Andrew joined Philips Image Guided Therapy (CA, USA) in 2012, helping launch the instant wave-free ratio (iFR) product in Europe and the United States before taking on greater responsibilities as the Physiology Segment Leader, and later assuming his current role as Coronary Segment Leader at Philips Image Guided Therapy (CA, USA).

  12. Andrew shortens lifetime of Louisiana Barrier Islands

    NASA Astrophysics Data System (ADS)

    Bush, Susan

    Because the Isles Dernieres, a series of four barrier islands off the coast of Louisiana, have one of the most rapidly eroding shorelines in the world, geologists at the U.S. Geological Survey and the Louisiana Geological Survey have been monitoring erosion activity over the last several years, said Jeff Williams of the USGS in Reston, Va. Hurricane Andrew, which struck the state on August 26, caused severe erosional damage to these islands that has shortened their lifetimes.Before Andrew struck, geologists projected that Raccoon Island would disappear below sea level by the year 2001 and that Whiskey Island would disappear by 2016. Now, due to the severe erosion from Hurricane Andrew, the scientists claim that the islands may disappear before the turn of the century, and the other islands in the Dernieres chain are expected to follow suit within 2 decades. Raccoon, Whiskey, Trinity, and East islands make up the Isles Dernieres, which existed as one island, known as the Isle Derniere, before an 1856 hurricane and subsequent erosion.

  13. The human side of Hurricane Andrew

    SciTech Connect

    Marshall, R.; Callander, R.C.

    1994-12-31

    This paper examines the long-term psychological effects of the nation`s worst natural disaster on the employees of the Turkey Point nuclear power plant. It also examines the efforts made by plant personnel and company volunteers to aid employees` families affected by the storm. Despite significant damage at the plant, unit 4 was returned to service 5 weeks after the August 24, 1992, hurricane. Unit 3 was returned to service on December 3, 1992. Unit 3 was originally scheduled to start a refueling outage the day Hurricane Andrew struck. While plant personnel are still recovering from Andrew`s impact, the plant`s performance has never been better. On May 26, 1993, the plant completed a record-breaking 46-day refueling outage - 7 days ahead of schedule and $3 million under budget. Turkey Point`s recovery, return to service, and superior performance would not have been possible without the efforts of hundreds of employees who put their personal tragedies aside and focused on the common goal of the plant`s operation. To help employees with rebuilding their lives, the plant launched extensive assistance programs. Although the plant returned to normal operation, plant personnel continue to struggle in a community whose infrastructure (homes, schools, stores, etc.) have been almost eliminated.

  14. False vacuum decay in Jordan-Brans-Dicke cosmologies

    NASA Technical Reports Server (NTRS)

    Holman, Richard; Kolb, Edward W.; Vadas, Sharon L.; Wang, Yun; Weinberg, Erick J.

    1989-01-01

    The bubble nucleation rate in a first-order phase transition taking place in a background Jordan-Brans-Dicke cosmology is examined. The leading order terms in the nucleation rate when the Jordan-Brans-Dicke field is large (i.e., late times) are computed by means of a Weyl rescaling of the fields in the theory. It is found that despite the fact that the Jordan-Brans-Dicke field (hence the effective gravitational constant) has a time dependence in the false vacuum at late times the nucleation rate is time independent.

  15. Separability of a mixture of Dicke states

    NASA Astrophysics Data System (ADS)

    Yu, Nengkun

    2016-12-01

    The structural relation between multipartite entanglement and symmetry is one of the central mysteries of quantum mechanics. In this paper, we study the separability of quantum states in the bosonic system. We show that a mixture of multiqubit Dicke states is separable if and only if its partial transpose is positive semidefinite, which confirms the hypothesis of Wolfe and Yelin [E. Wolfe and S. F. Yelin, Phys. Rev. Lett. 112, 140402 (2014), 10.1103/PhysRevLett.112.140402]. We generalize this result to a class of bosonic states in the d ⊗d system; and for general d , we determine its separability is NP-hard although verifiable conditions for separability are easily derived when d =3 ,4 .

  16. Einstein metrics and Brans-Dicke superfields

    SciTech Connect

    Marques, S.

    1988-01-01

    It is obtained here a space conformal to the Einstein space-time, making the transition from an internal bosonic space, constructed with the Majorana constant spinors in the Majorana representation, to a bosonic ''superspace,'' through the use of Einstein vierbeins. These spaces are related to a Grassmann space constructed with the Majorana spinors referred to above, where the ''metric'' is a function of internal bosonic coordinates. The conformal function is a scale factor in the zone of gravitational radiation. A conformal function dependent on space-time coordinates can be constructed in that region when we introduce Majorana spinors which are functions of those coordinates. With this we obtain a scalar field of Brans-Dicke type. 11 refs.

  17. Children describe life after Hurricane Andrew.

    PubMed

    Coffman, S

    1994-01-01

    Hurricane Andrew, which devastated the south Florida coast in August 1992, left over 250,000 people homeless with multiple health and social problems. This nursing study explored the experiences of 17 children, ages 5 through 12, who lived in the geographic area of storm damage. Common experiences described by the children included remembering the storm, dealing with after-effects, and reestablishing a new life. In general, children described a sense of strangeness, articulated as "life is weird" after the hurricane. In addition to stressful responses, many positive reactions were described by children in the study, revealing that the disaster also had a maturing effect.

  18. Autoparallel Orbits in Kerr Brans-Dicke Spacetimes

    NASA Astrophysics Data System (ADS)

    Cebeci, H.; Dereli, T.; Tucker, R. W.

    The bounded orbital motion of a massive spinless test particle in the background of a Kerr Brans-Dicke geometry is analysed in terms of worldlines that are auto-parallels of different metric compatible spacetime connections. In one case the connection is that of Levi-Civita with zero-torsion. In the second case the connection has torsion determined by the gradient of the Brans-Dicke background scalar field. The calculations permit one in principle to discriminate between these possibilities.

  19. Hurricane Andrew: Impact on hazardous waste management

    SciTech Connect

    Kastury, S.N. )

    1993-03-01

    On August 24, 1992, Hurricane Andrew struck the eastern coast of South Florida with winds of 140 mph approximately and a storm surge of 15 ft. The Florida Department of Environmental Regulation finds that the Hurricane Andrew caused a widespread damage throughout Dade and Collier County as well as in Broward and Monroe County and has also greatly harmed the environment. The Department has issued an emergency final order No. 92-1476 on August 26, 1992 to address the environmental cleanup and prevent any further spills of contaminants within the emergency area. The order authorizes the local government officials to designate certain locations in areas remote from habitation for the open burning in air certain incinerators of hurricane generated yard trash and construction and demolition debris. The Department staff has assisted the county and FEMA staff in establishing procedures for Hazardous Waste Management, Waste Segregation and disposal and emergency responses. Local governments have issued these burn permits to public agencies including FDOT and Corps of Engineering (COE). Several case studies will be discussed on the Hazardous Waste Management at this presentation.

  20. Shallow water currents during Hurricane Andrew

    NASA Astrophysics Data System (ADS)

    Keen, Timothy R.; Glenn, Scott M.

    1999-10-01

    Oceanographic measurements are used in combination with a numerical model to examine the influence of stratification on shallow water currents during the directly forced stage of a tropical cyclone (Hurricane Andrew) on the continental shelf. The following stratification-dependent coastal processes are examined: (1) turbulent mixing, (2) coastally trapped waves, (3) near-inertial oscillations, and (4) upwelling and downwelling. Turbulent mixing was strong within 1 Rw (radius of maximum winds) of the storm track, and stratification was nearly destroyed. Turbulent mixing was weak at distances greater than 2 Rw. The dominant coastal wave was a barotropic Kelvin wave generated as the storm surge relaxed after landfall. Baroclinic near-inertial oscillations were dominant at the shelf break and occurred along with a barotropic response on the middle shelf. Downwelling-favorable flow developed east of the track prior to the storm peak, and upwelling-favorable flow evolved west of the track as the eye crossed the shelf. The idealized storm flow was modified by local barotropic and baroclinic pressure gradients on the shelf. Ocean circulation during Hurricane Andrew was hindcast using both stratified and unstratified three-dimensional numerical models. For areas within 1 Rw of the storm track, the unstratified model matched the observed currents better than the stratified model, partly because of errors in the initial stratification. At distances greater than 2 Rw the influence of stratification increases, and the unstratified model does not reproduce the observed upwelling-favorable flow.

  1. Dispersive Regimes of the Dicke Model.

    PubMed

    Barberena, Diego; Lamata, Lucas; Solano, Enrique

    2017-08-18

    We study two dispersive regimes of the Dicke model in the dynamics of N two-level atoms interacting with a bosonic mode for long interaction times. Firstly, we analyze the model for the regime in which the qubit frequencies are equal and smaller than the mode frequency, and for values of the coupling strength similar or larger than the mode frequency, namely, the deep strong coupling regime. Secondly, we address an interaction that is dependent on the photon number, where the coupling strength is comparable to the geometric mean of the qubit and mode frequencies. We show that the associated dynamics is analytically tractable and provide useful frameworks with which to analyze the system behavior. In the deep strong coupling regime, we unveil the structure of unexpected resonances for specific values of the coupling, present for N ≥ 2, and in the photon-number-dependent regime we demonstrate that all the nontrivial dynamical behavior occurs in the atomic degrees of freedom for a given Fock state. We verify these assertions with numerical simulations of the qubit population and photon-statistic dynamics.

  2. Introduction of Dr. Andrew V Schally

    PubMed Central

    Mendoza-Valdés, Arturo

    2015-01-01

    I first met Dr. Andrew V Schally (PhD, MDhc (Multi), DSc, Distinguished Medical Research Scientist, U.S. Department of Veterans Affairs Professor of Pathology and Department of Medicine,
Miller School of Medicine, University of Miami, Miami, Florida, USA) many years ago, probably around the beginning of the 1990's in one of his visits to Mexico City (Figure 1). He has many friends in my country since some of the investigations that led to the development of the LHRH agonists were made in a couple of Mexican hospitals in collaboration with some outstanding Mexican physicians that I will mention later. In that time, I was the head of the Department of Urology of the Mexican National Cancer Institute and our Director, Dr. Jaime de la Garza, invited him for a meeting. I was surprised by his humbleness, intelligence and easy going personality, in spite of being a Nobel Prize scientist. PMID:26112485

  3. Dynamical phase transition in the open Dicke model

    PubMed Central

    Klinder, Jens; Keßler, Hans; Wolke, Matthias; Mathey, Ludwig; Hemmerich, Andreas

    2015-01-01

    The Dicke model with a weak dissipation channel is realized by coupling a Bose–Einstein condensate to an optical cavity with ultranarrow bandwidth. We explore the dynamical critical properties of the Hepp–Lieb–Dicke phase transition by performing quenches across the phase boundary. We observe hysteresis in the transition between a homogeneous phase and a self-organized collective phase with an enclosed loop area showing power-law scaling with respect to the quench time, which suggests an interpretation within a general framework introduced by Kibble and Zurek. The observed hysteretic dynamics is well reproduced by numerically solving the mean-field equation derived from a generalized Dicke Hamiltonian. Our work promotes the understanding of nonequilibrium physics in open many-body systems with infinite range interactions. PMID:25733892

  4. Aspects of a supersymmetric Brans-Dicke theory

    SciTech Connect

    Catena, Riccardo

    2007-02-15

    We consider a locally supersymmetric theory where the Planck mass is replaced by a dynamical superfield. This model can be thought of as the minimal supersymmetric extension of the Brans-Dicke theory (MSBD). The motivation that underlies this analysis is the research of possible connections between dark energy models based on Brans-Dicke-like theories and supersymmetric dark matter scenarios. We find that the phenomenology associated with the MSBD model is very different compared to the one of the original Brans-Dicke theory: the gravitational sector does not couple to the matter sector in a universal metric way. This feature could make the minimal supersymmetric extension of the BD idea phenomenologically inconsistent.

  5. General class of vacuum Brans-Dicke wormholes

    SciTech Connect

    Lobo, Francisco S. N.; Oliveira, Miguel A.

    2010-03-15

    Recently, traversable wormhole geometries were constructed in the context of f(R) gravity. The latter is equivalent to a Brans-Dicke theory with a coupling parameter {omega}=0, which is apparently excluded from the narrow interval, -3/2<{omega}<-4/3, extensively considered in the literature of static wormhole solutions in vacuum Brans-Dicke theory. However, this latter interval is only valid for a specific choice of an integration constant of the field equations derived on the basis of a post-Newtonian weak field approximation, and there is no reason for it to hold in the presence of compact objects with strong gravitational fields. In this context, we construct a general class of vacuum Brans-Dicke wormholes that include the value of {omega}=0.

  6. Collective lamb shift in single photon Dicke superradiance.

    PubMed

    Scully, Marlan O

    2009-04-10

    The collective Lamb shift and associated radiative decay of a large cloud of radius R containing N atoms uniformly excited by one photon of wavelength lambda is analyzed. It is shown that the time evolution of the symmetric state prepared by single photon absorption in the limit R>lambda is similar to that encountered in the Dicke limit of small sample (RDicke state.

  7. Quantum phase transition in a pseudo-Hermitian Dicke model

    SciTech Connect

    Deguchi, Tetsuo; Ghosh, Pijush K.

    2009-08-15

    We show that a Dicke-type non-Hermitian Hamiltonian admits entirely real spectra by mapping it to the 'dressed Dicke model' through a similarity transformation. We find a positive-definite metric in the Hilbert space of the non-Hermitian Hamiltonian so that the time evolution is unitary and allows a consistent quantum description. We then show that this non-Hermitian Hamiltonian describing nondissipative quantum processes undergoes quantum phase transition. The exactly solvable limit of the non-Hermitian Hamiltonian has also been discussed.

  8. Inflation and dark energy from the Brans-Dicke theory

    SciTech Connect

    Artymowski, Michał; Lalak, Zygmunt; Lewicki, Marek

    2015-06-17

    We consider the Brans-Dicke theory motivated by the f(R)=R+αR{sup n}−βR{sup 2−n} model to obtain a stable minimum of the Einstein frame scalar potential of the Brans-Dicke field. As a result we have obtained an inflationary scalar potential with non-zero value of residual vacuum energy, which may be a source of dark energy. In addition we discuss the probability of quantum tunnelling from the minimum of the potential. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n and ω.

  9. Dynamics of false vacuum bubbles in Brans-Dicke theory

    SciTech Connect

    Lee, Bum-Hoon; Lee, Wonwoo; Yeom, Dong-han E-mail: warrior@sogang.ac.kr

    2011-01-01

    We study the dynamics of false vacuum bubbles in the Brans-Dicke theory of gravity by using the thin shell or thin wall approximation. We consider a false vacuum bubble that has a different value for the Brans-Dicke field between the inside false vacuum region and the outside true vacuum region. Within a certain limit of field values, the difference of field values makes the effective tension of the shell negative. This allows new expanding false vacuum bubbles to be seen by the outside observer, which are disallowed in Einstein gravity.

  10. Remote sensing for hurricane Andrew impact assessment

    NASA Technical Reports Server (NTRS)

    Davis, Bruce A.; Schmidt, Nicholas

    1994-01-01

    Stennis Space Center personnel flew a Learjet equipped with instrumentation designed to acquire imagery in many spectral bands into areas most damaged by Hurricane Andrew. The calibrated airborne multispectral scanner (CAMS), a NASA-developed sensor, and a Zeiss camera acquired images of these areas. The information derived from the imagery was used to assist Florida officials in assessing the devastation caused by the hurricane. The imagery provided the relief teams with an assessment of the debris covering roads and highways so cleanup plans could be prioritized. The imagery also mapped the level of damage in residential and commercial areas of southern Florida and provided maps of beaches and land cover for determination of beach loss and vegetation damage, particularly the mangrove population. Stennis Space Center personnel demonstrated the ability to respond quickly and the value of such response in an emergency situation. The digital imagery from the CAMS can be processed, analyzed, and developed into products for field crews faster than conventional photography. The resulting information is versatile and allows for rapid updating and editing. Stennis Space Center and state officials worked diligently to compile information to complete analyses of the hurricane's impact.

  11. Hurricane Andrew and a pediatric emergency department.

    PubMed

    Quinn, B; Baker, R; Pratt, J

    1994-04-01

    To determine the effect of Hurricane Andrew on a pediatric emergency department. A retrospective analysis of ED visits through the use of computerized records and chart review. A children's hospital in South Florida. All patients presenting to the ED during the control week and the two study weeks after the hurricane. Census, diagnoses, admission rate, and patient geographic origin and age. During week 1, there was an average daily increase of 40.7% in patient volume (P < .01) and a 3.3% decrease in the admission rate (P < .01). The increased census was due mainly to local patients, rather than those from the most devastated areas. More patients were seen with open wounds, gastroenteritis, and impetigo (all, P < .05); more were more than 18 years old (P < .05). By the second week, both census and admission rate returned to normal; cases of cellulitis (P < .05) and open wounds (P < .001) were increased. Although not statistically significant, a higher percentage of hydrocarbon and/or bleach ingestions was seen for both weeks. Following a hurricane, personnel in a pediatric ED can expect to see an increased census, with more diagnoses of open wounds, gastroenteritis, and skin infections. They may also see hydrocarbon and bleach ingestions. Alerting parents to the potential for injury and accidental poisoning in their children after a hurricane may help prevent the reported morbidity.

  12. Fred Plaut in conversation with Andrew Samuels. Interview by Andrew Samuels.

    PubMed

    Plaut, Fred

    2010-02-01

    This is a reprint of an interview of Fred Plaut (who died in June 2009) conducted by Andrew Samuels in mid-1988 and first published in April 1989 in the Journal, 34, 2, pp. 159-83. The interview covers Plaut's early life, his career, and historical observations of the development of the Society of Analytical Psychology from its beginnings, and of the wider community of Jungian analysis. Plaut reflects uninhibitedly on such topics as the role of leadership in analytical psychology, discussing the parts played by Michael Fordham in London and Hannes Dieckmann in Berlin. Plaut explains his thinking concerning individuation.

  13. 3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

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

    3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 VIEW FROM CORNER OF WHITAKER AND ST JULIAN SHOWING NORTH FACADE - Gibbons Block, Congress, Saint Julian, Barnard, Whitaker Streets, Savannah, Chatham County, GA

  14. 2. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

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

    2. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 VIEW FROM MORRISON'S CAF? (CORNER OF WHITAKER & CONGRESS) SHOWING S. FACADE - Gibbons Block, Congress, Saint Julian, Barnard, Whitaker Streets, Savannah, Chatham County, GA

  15. 2. Historic American Buildings Survey L. D. Andrew, Photographer, Enlarged ...

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

    2. Historic American Buildings Survey L. D. Andrew, Photographer, Enlarged Photographed by Harold Bush-Brown Nov. 14, 1936 VIEW OF EASTERN SLAVE CABIN - Bass Place (Slave Cabins), Columbus, Muscogee County, GA

  16. 1. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged ...

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

    1. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged Photographed by Harold Bush-Brown Nov. 14, 1936 GENERAL VIEW OF SLAVE CABINS - Bass Place (Slave Cabins), Columbus, Muscogee County, GA

  17. STS-75 Mission Commander Andrew M. Allen in White Room

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 Mission Commander Andrew M. Allen (center) prepares to enter the Space Shuttle Columbia at Launch Pad 39B with assistance from white room closeout crew members Paul Arnold (left), Dave Law and Bob Saulnier.

  18. 5. Historic American Buildings Survey L. D. Andrew, Photographer Aug. ...

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

    5. Historic American Buildings Survey L. D. Andrew, Photographer Aug. 2, 1936 DETAIL OF DOUBLE OPENING WITH IRON GRATING IN THIRD STORY REAR ROOM - Emerson & Holmes Building, 556 Mulberry Street, Macon, Bibb County, GA

  19. 3. Historic American Buildings Survey L. D. Andrew, Photographer Aug. ...

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

    3. Historic American Buildings Survey L. D. Andrew, Photographer Aug. 2, 1936 PANELS AND VAULTED CEILING IN DRAWING ROOM, SECOND FLOOR - Emerson & Holmes Building, 556 Mulberry Street, Macon, Bibb County, GA

  20. 5. Historic American Buildings Survey L. D. Andrew, Photographer From ...

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

    5. Historic American Buildings Survey L. D. Andrew, Photographer From photograph furnished by Miss Edith D. Johnston, Savannah, Ga. Sept. 5, 1936 RED BRICK CHURCH (FORMER BUILDING 1811- 1837) - Christ Church (Episcopal), 28 Bull Street, Savannah, Chatham County, GA

  1. 2. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged ...

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

    2. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged Photo From photo of Miss Edith Johnston, Savannah, Ga. 1936 VIEW OF FRONT AND RIGHT SIDE (Restoration 1936) - Wild Heron Plantation, Little Ogeechee River Vicinity, Savannah, Chatham County, GA

  2. 1. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged ...

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

    1. Historic American Buildings Survey L. D. Andrew, Photographer Enlarged Photo From Photo of Miss Edith Johnston's, Savannah, Ga. 1936 VIEW OF FRONT AND SIDE (Before Restoration, 1936). - Wild Heron Plantation, Little Ogeechee River Vicinity, Savannah, Chatham County, GA

  3. 1. Historic American Buildings Survey L. D. Andrew, Photographer (Enlarged ...

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

    1. Historic American Buildings Survey L. D. Andrew, Photographer (Enlarged by) Aug. 6, 1936 Photographed by Harold Bush-Brown SIDE VIEW - Covered Bridge, Spanning Soap Creek, Atlanta, Fulton County, GA

  4. 3. Historic American Buildings Survey L. D. Andrew, Photographer Nov. ...

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

    3. Historic American Buildings Survey L. D. Andrew, Photographer Nov. 27, 1936 FRONT DOORWAY; INTERIOR VIEW - Kilpatrick House, Forrest Hills Road (moved from Greene Street), Augusta, Richmond County, GA

  5. 5. Historic American Buildings Survey L. D. Andrew, Photographer Nov. ...

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

    5. Historic American Buildings Survey L. D. Andrew, Photographer Nov. 27, 1936 MANTEL IN RIGHT FRONT ROOM - Kilpatrick House, Forrest Hills Road (moved from Greene Street), Augusta, Richmond County, GA

  6. 9. HISTORIC AMERICAN BUILDINGS SURVEY L. D. ANDREW PHOTOGRAPHER ...

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

    9. HISTORIC AMERICAN BUILDINGS SURVEY L. D. ANDREW - PHOTOGRAPHER SEPT. 7, 1936 BEAM, CORNICE, AND CEILING ORNAMENT IN FRONT HALL - Sorrel-Weed House, 6 West Harris Street, Savannah, Chatham County, GA

  7. 7. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

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

    7. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 CORNER OF WEST FRONT ROOM (SHOWING CORNICE AND WINDOW HEAD) - Wayne-Gordon House, 10 East Oglethorpe Avenue, Savannah, Chatham County, GA

  8. 3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

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

    3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 CENTRAL PORTION OF REAR (Showing backsteps, stoop & stairhall, window) - Wayne-Gordon House, 10 East Oglethorpe Avenue, Savannah, Chatham County, GA

  9. 13. Circa 1880 view (from the north) across Andrew Hallidie ...

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

    13. Circa 1880 view (from the north) across Andrew Hallidie suspension bridge. Source: Searles Library, Nevada City, California. - Gault Bridge, Spanning Deer Creek at South Pine Street, Nevada City, Nevada County, CA

  10. Dick receives 2011 Harry H. Hess Medal: Citation

    NASA Astrophysics Data System (ADS)

    Niu, Yaoling

    2012-01-01

    Henry J. B. Dick was awarded the 2011 Harry H. Hess Medal at the AGU Fall Meeting Honors Ceremony, held on 7 December 2011 in San Francisco, Calif. The medal is for "outstanding achievements in research on the constitution and evolution of Earth and other planets."

  11. Dick receives 2011 Harry H. Hess Medal: Response

    NASA Astrophysics Data System (ADS)

    Dick, Henry J. B.

    2012-01-01

    Henry J. B. Dick was awarded the 2011 Harry H. Hess Medal at the AGU Fall Meeting Honors Ceremony, held on 7 December 2011 in San Francisco, Calif. The medal is for "outstanding achievements in research on the constitution and evolution of Earth and other planets."

  12. Using Herman Melville's "Moby-Dick" to Explore Geographic Themes

    ERIC Educational Resources Information Center

    Gesler, Wil

    2004-01-01

    The classic American novel, Herman Melville's "Moby-Dick", can be used in geography and English classes at the high school and college levels to explore five themes that have a geographic component or are of interest to geography students: (1) the journey, (2) human/environment interactions, (3) social relationships in space, (4) acquiring…

  13. Author! Author! The Gallant Children's Author: Dick King-Smith

    ERIC Educational Resources Information Center

    Brodie, Carolyn S.

    2005-01-01

    This column presents a brief biography of Dick King-Smith. Born on March 27, 1922 and raised in Gloucestershire, England, he grew up with animals of all kinds. King-Smith was a farmer for twenty years and then became a school teacher. He was also a soldier during wartime, a traveling salesman, shoe factory worker, and television presenter. He…

  14. The Dick and Carey Model: Will It Survive the Decade?

    ERIC Educational Resources Information Center

    Dick, Walter

    1996-01-01

    Reviews changes in the original Dick and Carey model of instructional design and considers its future usefulness. Topics include alternative instructional design textbooks, the influence of constructivist theory on the 1996 version of the model with its systems approach, and the influence of constructivist and objectivist models. (Author/LRW)

  15. Density perturbations in a Brans-Dicke cosmological model

    NASA Astrophysics Data System (ADS)

    Berman, Marcelo Samuel

    1990-12-01

    A very general flat solution for Brans-Dicke cosmology with a perfect-fluid, Robertson-Walker metric and a perfect gas law of state is examined regarding density perturbations. The model has growing instabilities, but not of exponential character.

  16. Religion as a Quest for Wholeness: Melville's Moby-Dick

    ERIC Educational Resources Information Center

    Vaught, Carl G.

    1974-01-01

    Author attempted to indicate the ways in which Melville's novel, Moby-Dick, may be understood as a concrete embodiment of the religious quest, and as a set of clues about ways in which the language of a quest may finally be transcended. (Author/RK)

  17. The Truth of the Thing: Nonfiction in "Moby Dick"

    ERIC Educational Resources Information Center

    Hilbert, Betsy

    1986-01-01

    Looks at Melville's narrative construction of "onion-like...layers of truth" that combine romance and textbook, presents critics' discussion and scholars' treatment of the cetological information present in the text, offers an explanation for the lack of recognition due to the nonfictional parts of "Moby Dick." (JK)

  18. TEACHING "MOBY DICK," A METHOD AND AN APPROACH.

    ERIC Educational Resources Information Center

    JOSEPHS, LOIS

    "MOBY DICK" IS SINGULARLY APPROPRIATE FOR HIGH SCHOOL STUDENTS IN ITS PHILOSOPHICAL, PSYCHOLOGICAL, AND SOCIAL EMPHASIS. HOWEVER, TO GUIDE THE STUDENTS INTO THE THEMATIC INTRICACIES OF THE WORK, THE TEACHER MUST USE A CAREFULLY PLANNED, INDUCTIVE APPROACH THAT DEMANDS CLOSE TEXTUAL STUDY IN CLASS. ALTHOUGH EACH TEACHER SHOULD CONCENTRATE…

  19. Cosmological evolution of black holes in Brans-Dicke gravity

    NASA Astrophysics Data System (ADS)

    Sakai, Nobuyuki; Barrow, John D.

    2001-11-01

    We consider a modified 'Swiss cheese' model in the Brans-Dicke theory and use it to discuss the evolution of black holes in an expanding universe. We define the black hole radius by the Misner-Sharp mass and find the exact time evolutions for dust and vacuum universes of all curvatures.

  20. Author! Author! The Gallant Children's Author: Dick King-Smith

    ERIC Educational Resources Information Center

    Brodie, Carolyn S.

    2005-01-01

    This column presents a brief biography of Dick King-Smith. Born on March 27, 1922 and raised in Gloucestershire, England, he grew up with animals of all kinds. King-Smith was a farmer for twenty years and then became a school teacher. He was also a soldier during wartime, a traveling salesman, shoe factory worker, and television presenter. He…

  1. Inhomogeneous static model in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Berman, Marcelo Samuel

    1992-02-01

    A static universe with position-dependent rest-energy density, pressure, and scalar field is considered in Brans-Dicke theory. A perfect-gas equation of state is obtained with the solution to the field equations for the Euclidean case with Robertson-Walker metric.

  2. The Truth of the Thing: Nonfiction in "Moby Dick"

    ERIC Educational Resources Information Center

    Hilbert, Betsy

    1986-01-01

    Looks at Melville's narrative construction of "onion-like...layers of truth" that combine romance and textbook, presents critics' discussion and scholars' treatment of the cetological information present in the text, offers an explanation for the lack of recognition due to the nonfictional parts of "Moby Dick." (JK)

  3. William S. Gray and the Dick and Jane Readers.

    ERIC Educational Resources Information Center

    Mavrogenes, Nancy A.

    William S. Gray, Professor of Education and Dean of the College of Education at the University of Chicago, began work in 1929 on a major revision of the "Elson Readers," a popular basal series published by Scott, Foresman and Company. Organized around the daily life of two ordinary children, the "Dick and Jane" readers…

  4. Embedding Brans-Dicke gravity into electroweak theory

    SciTech Connect

    Chernodub, M. N.; Niemi, Antti J.

    2008-06-15

    We argue that a version of the four dimensional Brans-Dicke theory can be embedded in the standard flat spacetime electroweak theory. The embedding involves a change of variables that separates the isospin from the hypercharge in the electroweak theory.

  5. Interview: Professor Andrew Feinberg speaks to Epigenomics.

    PubMed

    Feinberg, Andrew

    2009-10-01

    Andrew Feinberg studied mathematics and humanities at Yale University (CT, USA) in the Directed Studies honors program, and he received his BA (1973) and MD (1976) from the accelerated medical program at Johns Hopkins University (MD, USA), as well as an MPH from Johns Hopkins (1981). He performed a postdoctoral fellowship in developmental biology at the University of California, San Diego (UCSD, CA, USA), clinical training in medicine and medical genetics at the University of Pennsylvania (PA, USA) and genetics research with Bert Vogelstein at Johns Hopkins, discovering altered DNA methylation in human cancer. Dr Feinberg continued to perform seminal work in cancer epigenetics as a Howard Hughes investigator at the University of Michigan (MI, USA), discovering human imprinted genes and loss of imprinting in cancer, and the molecular basis of Beckwith-Wiedemann syndrome. He returned to John Hopkins in 1994 as King Fahd Professor of Medicine, Molecular Biology & Genetics and Oncology, and he holds an Adjunct Professorship at the Karolinska Institute in Sweden. Dr Feinberg is Director of the Center for Epigenetics, a National Human Genome Research Institute-designated Center of Excellence in Genome Sciences. The Center is pioneering genome-scale tools in molecular, statistical and epidemiological epigenetics, and is applying them to the study of cancer, neuropsychiatric disease and aging. As part of the center, Dr Feinberg has organized a highly innovative program to bring gifted minority high-school students into genetics and genomics. Dr Feinberg has also invented a number of widely used molecular tools, including random priming. His honors include election to the American Society for Clinical Investigation, the Association of American Physicians, the Institute of Medicine of the National Academy of Sciences, and the American Academy of Arts and Sciences, as well as membership on the ISI most-cited authors list, a MERIT Award of the National Cancer Institute, a

  6. Preparation of Dicke states in an ion chain

    NASA Astrophysics Data System (ADS)

    Hume, D. B.; Chou, C. W.; Rosenband, T.; Wineland, D. J.

    2009-11-01

    We have investigated theoretically and experimentally a method for preparing Dicke states in trapped atomic ions. We consider a linear chain of N ion qubits that is prepared in a particular Fock state of motion |m⟩ . The m phonons are removed by applying a laser pulse globally to the N qubits and converting the motional excitation to m flipped spins. The global nature of this pulse ensures that the m flipped spins are shared by all the target ions in a state that is a close approximation to the Dicke state |DN(m)⟩ . We calculate numerically the fidelity limits of the protocol and find small deviations from the ideal state for m=1 and m=2 . We have demonstrated the basic features of this protocol by preparing the Bell state |D2(1)⟩ in two M25g+ target ions trapped simultaneously with an A27l+ ancillary ion.

  7. Inflation and dark energy from the Brans-Dicke theory

    SciTech Connect

    Artymowski, Michał; Lalak, Zygmunt; Lewicki, Marek E-mail: Zygmunt.Lalak@fuw.edu.pl

    2015-06-01

    We consider the Brans-Dicke theory motivated by the f(R) = R + α R{sup n} − β R{sup 2−n} model to obtain a stable minimum of the Einstein frame scalar potential of the Brans-Dicke field. As a result we have obtained an inflationary scalar potential with non-zero value of residual vacuum energy, which may be a source of dark energy. In addition we discuss the probability of quantum tunnelling from the minimum of the potential. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n and ω.

  8. Single-impurity-induced Dicke quantum phase transition in a cavity-Bose-Einstein condensate.

    PubMed

    Yuan, Ji-Bing; Lu, Wang-Jun; Song, Ya-Ju; Kuang, Le-Man

    2017-08-07

    We present a new generalized Dicke model, an impurity-doped Dicke model (IDDM), by the use of an impurity-doped cavity-Bose-Einstein condensate (BEC). It is shown that the impurity atom can induce Dicke quantum phase transition (QPT) from the normal phase to superradiant phase at a critic value of the impurity population. It is found that the impurity-induced Dicke QPT can happen in an arbitrary field-atom coupling regime while the Dicke QPT in the standard Dicke model occurs only in the strong coupling regime of the cavity field and atoms. This opens the possibility to realize the control of quantum properties of a macroscopic-quantum system (BEC) by using a microscopic quantum system (a single impurity atom).

  9. Brans-Dicke cosmology with time-dependent cosmological term

    NASA Astrophysics Data System (ADS)

    Berman, Marcelo Samuel

    1990-12-01

    Berman and Som's solution for a Brans-Dicke cosmology with time-dependent cosmological term, Robertson-Walker metric, perfect fluid, and perfect gas law of state solves the horizon, homogeneity, and isotropy problems without requiring any unnatural fine tuning in the very early universe, thus being an alternative model to inflation. The model also does not need recourse to quantum cosmology, and solves the flatness and magnetic monopole problems.

  10. Nonequilibrium quantum phase transitions in the Dicke model.

    PubMed

    Bastidas, V M; Emary, C; Regler, B; Brandes, T

    2012-01-27

    We establish a set of nonequilibrium quantum phase transitions in the Dicke model by considering a monochromatic nonadiabatic modulation of the atom-field coupling. For weak driving the system exhibits a set of sidebands which allow the circumvention of the no-go theorem which otherwise forbids the occurrence of superradiant phase transitions. At strong driving we show that the system exhibits a rich multistable structure and exhibits both first- and second-order nonequilibrium quantum phase transitions.

  11. Antigravity in F( R) and Brans-Dicke theories

    NASA Astrophysics Data System (ADS)

    Oikonomou, V. K.; Karagiannakis, N.

    2014-12-01

    We study antigravity in F( R)-theory originating scalar-tensor theories and also in Brans-Dicke models without cosmological constant. For the F( R) theory case, we obtain the Jordan frame antigravity scalar-tensor theory by using a variant of the Lagrange multipliers method and we numerically study the time dependent effective gravitational constant. As we shall demonstrate in detail by using some viable F( R) models, although the initial F( R) models have no antigravity, their scalar-tensor counterpart theories might or not have antigravity, a fact mainly depending on the parameter that characterizes antigravity. Similar results hold true in the Brans-Dicke model, which we also studied numerically. In addition, regarding the Brans-Dicke model we also found some analytic cosmological solutions. Since antigravity is an unwanted feature in gravitational theories, our findings suggest that in the case of F( R) theories, antigravity does not occur in the real world described by the F( R) theory, but might occur in the Jordan frame scalar-tensor counterpart of the F( R) theory, and this happens under certain circumstances. The central goal of our study is to present all different cases in which antigravity might occur in modified gravity models.

  12. Dynamics and cosmological constraints on Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Hrycyna, Orest; Szydłowski, Marek; Kamionka, Michał

    2014-12-01

    We investigate observational constraints on the Brans-Dicke cosmological model using observational data coming from distant supernovae type Ia, the Hubble function H (z ) measurements, information coming from the Alcock-Paczyński test, and baryon acoustic oscillations. Our analysis is based on the modified Friedmann function resulting form dynamical investigations of Brans-Dicke cosmology in the vicinity of a de Sitter state. The qualitative theory of dynamical systems enables us to obtain three different behaviors in the vicinity of this state. We find for a linear approach to the de Sitter state ωBD=-0.8606-0.1341+0.8281 , for an oscillatory approach to the de Sitter state ωBD=-1.1103-0.1729+0.1872 , and for the transient de Sitter state represented by a saddle-type critical point ωBD=-2.3837-4.5459+0.4588 . We obtain the mass of the Brans-Dicke scalar field at the present epoch as mϕ˜H0. The Bayesian methods of model comparison are used to discriminate between obtained models. We show that observational data point toward vales of the ωBD parameter close to the value suggested by the low-energy limit of the bosonic string theory.

  13. Brans-Dicke Galileon and the variational principle

    NASA Astrophysics Data System (ADS)

    Quiros, Israel; García-Salcedo, Ricardo; Gonzalez, Tame; Horta-Rangel, F. Antonio; Saavedra, Joel

    2016-09-01

    This paper is aimed at a (mostly) pedagogical exposition of the derivation of the motion equations of certain modifications of general relativity. Here we derive in all detail the motion equations in the Brans-Dicke theory with cubic self-interaction. This is a modification of the Brans-Dicke theory by the addition of a term in the Lagrangian which is non-linear in the derivatives of the scalar field: it contains second-order derivatives. This is the basis of the so-called Brans-Dicke Galileon. We pay special attention to the variational principle and to the algebraic details of the derivation. It is shown how higher order derivatives of the fields appearing in the intermediate computations cancel out leading to second order motion equations. The reader will find useful tips for the derivation of the field equations of modifications of general relativity such as the scalar-tensor theories and f(R) theories, by means of the (stationary action) variational principle. The content of this paper is particularly recommended to those graduate and postgraduate students who are interested in the study of the mentioned modifications of general relativity.

  14. Obituary: Richard L. (Dick) Walker, Jr., 1938-2005

    NASA Astrophysics Data System (ADS)

    Pier, Jeffrey R.; Mason, Brian

    2005-12-01

    Dick Walker, 67, died 30 March 2005 in Flagstaff, AZ, following a long illness. He was born on 9 March 1938 in Hampton, Iowa and grew up in Waterloo, Iowa. As a child, Dick was fascinated with astronomy and built his own telescope. He saved his pennies and bought and read every book on the subject he could find. He also raised pigeons, naming four of them Hertzsprung, Hoyle, Gamow, and Kron. In 1957, the year Sputnik was launched, Dick began his college studies at the University of Northern Iowa in Cedar Falls. In 1959, he transferred to the State University of Iowa (subsequently renamed the University of Iowa) in Iowa City, where he earned a BA degree in astronomy and physics in 1963. He joined the staff of the U.S. Naval Observatory in Washington, DC, where he worked in the Time Service Division for a year before his assignment to the Astrometry and Astrophysics Division. Dick relocated to Flagstaff, AZ, in 1966 to continue his Naval Observatory service at the Flagstaff Station. His retirement in May 1999, ended a thirty-six-year career with USNO. Dick was first and foremost an observational astronomer. From the mid 1960s through the late 1970s, much of Dick's time was devoted to the measurement of binary stars, observing with the 12-inch and 26-inch refractors in Washington and later the 40-inch and 61-inch reflectors in Flagstaff. He also made many trips to Lick Observatory to work with the 36-inch Clark Refractor there. During this time he consulted with Charles Worley, who was observing on the 26-inch, to make sure time was well-spent examining doubles that could not be observed in Washington. This period of observing overlapped with the early years of speckle interferometry, and Dick's observations, made with the largest telescope used for micrometry at the time, were very important for ascertaining the veracity of this new technique. He was a studious and very careful observer of doubles and made over 8,000 measures, resulting in almost 3,000 mean positions

  15. Astronaut Andrew Allen monitors Columbia's systems from pilots station

    NASA Image and Video Library

    1994-03-05

    STS062-41-025 (18 March 1994) --- Astronaut Andrew M. Allen monitors Columbia's systems from the pilot's station during the entry phase of the STS-62 mission. The fast-speed 35mm film highlights the many controls and displays and the cathode ray tubes on the forward flight deck.

  16. Astronaut Andrew M. Allen looks over procedure book in middeck

    NASA Technical Reports Server (NTRS)

    1994-01-01

    On Columbia's middeck, astronaut Andrew M. Allen, pilot, looks over a procedures book in the midst of a 14-day mission. Allen is attired in a new thermally controlled undergarment. Allen wore the garment during the launch and entry phases of the flight.

  17. Astronaut Andrew M. Allen monitors Columbia's systems from pilots station

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Astronaut Andrew M. Allen monitors Columbia's systems from the pilot's station during the entry phase of the STS-62 mission. The fast-speed 35mm film highlights the many controls and displays and the cathode ray tubes on the forward flight deck.

  18. GRAHAM NELSON AND ANDREW HANKS WITH BREADBOARD ENGINE PROJECT CO

    NASA Image and Video Library

    2016-09-14

    Graham Nelson, right, and Andrew Hanks examine a combustion chamber developed by engineers at NASA's Marshall Space Flight Center in Huntsville, Alabama, for an additively manufactured demonstration breadboard engine project. Nelson is project manager and Hanks is test lead for the project, in which engineers are designing components from scratch to be made entirely by 3-D printing.

  19. 4. Historic American Buildings Survey L. D. Andrew, Photographer Sept. ...

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

    4. Historic American Buildings Survey L. D. Andrew, Photographer Sept. 5, 1936 Photograph from photograph furnished by Miss Edith D. Johnston, Savannah, GA. VIEW OF CHANCEL IN CHRIST CHURCH BEFORE DEMOLITION photo ABOUT 1870 - Christ Church (Episcopal), 28 Bull Street, Savannah, Chatham County, GA

  20. Appreciating Unity in Diversity: An Interview with Andrew Solomon

    ERIC Educational Resources Information Center

    Peters, Dane L.

    2014-01-01

    The theme of the AMS 2014 Annual Conference is "Unity in Diversity," a concept that also describes the work of conference keynote speaker Andrew Solomon. Solomon is a writer and lecturer on psychology and politics; winner of the National Book Award; and an activist for LGBT [lesbian, gay, bisexual, and transgender] rights, mental health,…

  1. Appreciating Unity in Diversity: An Interview with Andrew Solomon

    ERIC Educational Resources Information Center

    Peters, Dane L.

    2014-01-01

    The theme of the AMS 2014 Annual Conference is "Unity in Diversity," a concept that also describes the work of conference keynote speaker Andrew Solomon. Solomon is a writer and lecturer on psychology and politics; winner of the National Book Award; and an activist for LGBT [lesbian, gay, bisexual, and transgender] rights, mental health,…

  2. The Economic Impact of Andrews University, 1976-77.

    ERIC Educational Resources Information Center

    Klimes, Rudolf E.; And Others

    The economic impact, both beneficial and adverse, of Andrews University in the local area was studied. Questionnaires were prepared and distributed to a random sample of faculty, staff, and administrators; a random sample of the student body; and a select number of business establishments. More than 90 percent of the faculty, staff,…

  3. Hurricane Andrew in Florida: Dynamics of a Disaster.

    NASA Astrophysics Data System (ADS)

    Willoughby, H. E.; Black, P. G.

    1996-03-01

    Four meteorological factors aggravated the devastation when Hurricane Andrew struck South Florida: completed replacement of the original eyewall by an outer, concentric eyewall while Andrew was still at sea; storm translation so fast that the eye crossed the populated coastline before the influence of land could weaken it appreciably, extreme wind speed, 82 m s1 winds measured by aircraft flying at 2.5 km; and formation of an intense, but nontornadic, convective vortex in the eyewall at the time of landfall. Although Andrew weakened for 12 h during the eyewall replacement, it contained vigorous convection and was reintensifying rapidly as it passed onshore. The Gulf Stream just offshore was warm enough to support a sea level pressure 20-30 hPa lower than the 922 hPa attained, but Andrew bit land before it could reach this potential. The difficult-to-predict mesoscale and vortex-scale phenomena determined the course of events on that windy morning, not a long-term trend toward worse hurricanes.

  4. Hurricane Andrew: Parent Conflict As a Moderator of Children's Adjustment.

    ERIC Educational Resources Information Center

    Wasserstein, Shari B.; La Greca, Annette M.

    1998-01-01

    Three months after Hurricane Andrew, 89 children in grades four to six who lived in two-parent families and had experienced the hurricane were tested. Children's symptoms of posttraumatic stress disorder were related to their perceptions of parental conflict; this relationship was stronger for Hispanic children than for other ethnic groups.…

  5. The Mental Health Counselor's Role in Hurricane Andrew.

    ERIC Educational Resources Information Center

    Dingman, Robert L.

    1995-01-01

    Discusses the effects of Hurricane Andrew on disaster workers, followed by some reported experiences of workers as well as victims. Background on natural disasters in general is given, along with information about crisis intervention. Discusses mental health interventions and various skills needed by disaster mental health counselors. (Author/KW)

  6. Do massive Brans-Dicke theories of gravitation imitate Brans-Dicke theories with nonzero divergence of energy-momentum tensor

    NASA Technical Reports Server (NTRS)

    Smalley, L. L.

    1974-01-01

    Acharya and Hogan (1973) have introduced a massive scalar field into the usual Brans-Dicke (1961) theory of gravitation. Formally they obtain certain field equations. The assumption of a nonzero divergence for T mu nu (or equivalently the introduction of sources) formally imitates a massive Brans-Dicke and satisfies the condition of Acharya and Hogan that the theory be indistinguishable with the classical test of the Einstein theory. Although it was shown elsewhere that the modified Brans-Dicke theory agrees with the classical test under certain conditions, there were no specified limits on omega, a similar circumstance discovered by Acharya and Hogan for the massive scalar field.

  7. Do massive Brans-Dicke theories of gravitation imitate Brans-Dicke theories with nonzero divergence of energy-momentum tensor

    NASA Technical Reports Server (NTRS)

    Smalley, L. L.

    1974-01-01

    Acharya and Hogan (1973) have introduced a massive scalar field into the usual Brans-Dicke (1961) theory of gravitation. Formally they obtain certain field equations. The assumption of a nonzero divergence for T mu nu (or equivalently the introduction of sources) formally imitates a massive Brans-Dicke and satisfies the condition of Acharya and Hogan that the theory be indistinguishable with the classical test of the Einstein theory. Although it was shown elsewhere that the modified Brans-Dicke theory agrees with the classical test under certain conditions, there were no specified limits on omega, a similar circumstance discovered by Acharya and Hogan for the massive scalar field.

  8. 75 FR 32221 - Whirlpool Corporation, Evansville Division, Including On-Site Leased Workers from Andrews...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-07

    ... this certification to include leased workers from Andrews International, Inc. working on-site at the... Employment and Training Administration Whirlpool Corporation, Evansville Division, Including On-Site Leased Workers from Andrews International, Inc., Evansville, IN; Amended Certification Regarding Eligibility...

  9. 76 FR 57043 - Andrew N. Finkel; Analysis of Proposed Consent Order to Aid Public Comment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-15

    ... Andrew N. Finkel; Analysis of Proposed Consent Order to Aid Public Comment AGENCY: Federal Trade... SUPPLEMENTARY INFORMATION section below. Write ``Andrew N. Finkel, File No. 102 3206'' on your comment, and file.... Write ``Andrew N. Finkel, File No. 102 3206'' on your comment. Your comment--including your name and...

  10. Local distinguishability of Dicke states in quantum secret sharing

    NASA Astrophysics Data System (ADS)

    Wang, Jing-Tao; Xu, Gang; Chen, Xiu-Bo; Sun, Xing-Ming; Jia, Heng-Yue

    2017-03-01

    We comprehensively investigate the local distinguishability of orthogonal Dicke states under local operations and classical communication (LOCC) from both qualitative and quantitative aspects. Based on our work, defects in the LOCC-quantum secret sharing (QSS) scheme can be complemented, and the information leakage can be quantified. For (k1 ,k2 , k , n)-threshold LOCC-QSS scheme, more intuitive formulas for unambiguous probability and guessing probability were established, which can be used for determining the parameter k1 and k2 directly.

  11. The limits of pity in Bartleby and Moby Dick.

    PubMed

    Rosenblatt, L

    2008-12-01

    Failures in the emotional connection between doctors and their patients tend to be reported in terms of compassion fatigue, burn-out, secondary trauma and depression in overlapping and somewhat interchangeable ways. In Moby Dick and Bartleby, Melville interrogates the culturally accepted descriptions of pity and explores the reasons for the limits in human pity he observed and depicted. In an attempt to understand whether the feelings of pity that a patient's suffering can evoke in physicians are sustainable, desirable, or counter-productive, Melville's narratives, along with that of a woman who, while living with advanced cancer experiences the breakdown of a key medical relationship, will be considered.

  12. Observational constraints imposed by Brans-Dicke cosmologies.

    NASA Technical Reports Server (NTRS)

    Morganstern, R. E.

    1973-01-01

    Flat-space Brans-Dicke (BD) cosmologies previously found are analyzed in more detail. It is shown that the observed values of the matter density, the Hubble age, the ages of objects in the universe, the deceleration parameter, and the bound on the (unobserved) fractional time variation of the gravitational constant are too inaccurate to distinguish between the BD and Einstein-Friedmann cosmologies. An attempt is made to argue that because of the great degree of latitude in the observational constraints imposed by the BD cosmologies, efforts to improve the bound on the fractional time variation of G alone are not sufficient to rule out the BD theory.

  13. Observational constraints imposed by Brans-Dicke cosmologies.

    NASA Technical Reports Server (NTRS)

    Morganstern, R. E.

    1973-01-01

    Flat-space Brans-Dicke (BD) cosmologies previously found are analyzed in more detail. It is shown that the observed values of the matter density, the Hubble age, the ages of objects in the universe, the deceleration parameter, and the bound on the (unobserved) fractional time variation of the gravitational constant are too inaccurate to distinguish between the BD and Einstein-Friedmann cosmologies. An attempt is made to argue that because of the great degree of latitude in the observational constraints imposed by the BD cosmologies, efforts to improve the bound on the fractional time variation of G alone are not sufficient to rule out the BD theory.

  14. An instance of sleep paralysis in Moby-Dick.

    PubMed

    Herman, J

    1997-07-01

    It is suggested that picturesque medical conditions can, at times, be encountered in literary works composed prior to their clinical delineation. This is true of sleep paralysis, of which the first scientific description was given by Silas Weir Mitchell in 1876. A quarter of a century earlier, Herman Melville, in Moby-Dick, gave a precise account of a case, including the predisposing factors and sexual connotations, all in accord with modern theory. The details of Ishmael's attack of sleep paralysis, the stresses leading up to it, and the associations causing him to recall the experience are given here.

  15. On the phenomenology of extended Brans-Dicke gravity

    SciTech Connect

    Lima, Nelson A.; Ferreira, Pedro G. E-mail: p.ferreira1@physics.ox.ac.uk

    2016-01-01

    We introduce a designer approach for extended Brans-Dicke gravity that allows us to obtain the evolution of the scalar field by fixing the Hubble parameter to that of a w CDM model. We obtain analytical approximations for ϕ as a function of the scale factor and use these to build expressions for the effective Newton's constant at the background and at the linear level and the slip between the perturbed Newtonian potentials. By doing so, we are able to explore their dependence on the fundamental parameters of the theory.

  16. Exploring Symmetry Breaking at the Dicke Quantum Phase Transition

    SciTech Connect

    Baumann, K.; Mottl, R.; Brennecke, F.; Esslinger, T.

    2011-09-30

    We study symmetry breaking at the Dicke quantum phase transition by coupling a motional degree of freedom of a Bose-Einstein condensate to the field of an optical cavity. Using an optical heterodyne detection scheme, we observe symmetry breaking in real time and distinguish the two superradiant phases. We explore the process of symmetry breaking in the presence of a small symmetry-breaking field and study its dependence on the rate at which the critical point is crossed. Coherent switching between the two ordered phases is demonstrated.

  17. Arbitrary Dicke-State Control of Symmetric Rydberg Ensembles

    NASA Astrophysics Data System (ADS)

    Keating, Tyler; Baldwin, Charles H.; Jau, Yuan-Yu; Lee, Jongmin; Biedermann, Grant W.; Deutsch, Ivan H.

    2016-11-01

    We study the production of arbitrary superpositions of Dicke states via optimal control. We show that N atomic hyperfine qubits, interacting symmetrically via the Rydberg blockade, are well described by the Jaynes-Cummings Hamiltonian and fully controllable by phase-modulated microwaves driving Rydberg-dressed states. With currently feasible parameters, it is possible to generate states of ˜ten hyperfine qubits in ˜1 μ s , assuming a fast microwave phase switching time. The same control can be achieved with a "dressed-ground control" scheme, which reduces the demands for fast phase switching at the expense of increased total control time.

  18. Dicke-Josephson effect in a cross-typed triple-quantum-dot junction

    NASA Astrophysics Data System (ADS)

    Wang, Xiao-Qi; Yi, Guang-Yu; Gong, Wei-Jiang

    2016-12-01

    We investigate the Dicke-Josephson effect in a superconductor/triple-quantum-dot/superconductor junction in which the central dot is coupled to the superconductors. It is found that the Dicke effect can modulate the Josephson effect in a nontrivial way. In the noninteracting case, the Dicke effect induces a subpeak in the supercurrent spectrum around the energy zero point. When intradot interactions are taken into account, the role of the Dicke effect changes completely. Namely, it tends to suppress the π-phase current near the position of electron-hole symmetry. With the increase of the Coulomb strength, it has an opportunity to reverse the current direction. We thus conclude that the Dicke-Josephson effect is also an important part in describing the Josephson effect in coupled-dot junctions.

  19. STS-75 Mission Cmdr Andrew Allen arrives at SLF

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 Mission Commander Andrew M. Allen arrives at KSC's Shuttle Landing Facility. Altogether seven crew members are assigned to the second Shuttle flight of 1996, which will be highlighted by the re-flight of the Italian Tethered Satellite System (TSS-1R). Liftoff is slated to occur during a two-and-a-half window opening at 3:18 p.m. EST, Feb. 22.

  20. STS-75 Mission Commander Andrew M. Allen suits up

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 Mission Commander Andrew M. Allen completes suitup activities in the Operations and Checkout Building. STS-75 will be Allen's third trip into space, his first as commander. Allen and an international crew will depart shortly for Launch Pad 39B, where the Space Shuttle Columbia awaits liftoff during a two-and- a-half-hour launch window opening at 3:18 p.m. EST.

  1. STS-75 Mission Cmdr Andrew Allen talks to media

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 Mission Commander Andrew M. Allen talks to news media gathered at KSC's Shuttle Landing Facility for the flight crew's arrival. Altogether seven crew members are assigned to the second Shuttle flight of 1996, which will be highlighted by the re- flight of the Italian Tethered Satellite System (TSS-1R). Liftoff is slated to occur during a two-and-a-half window opening at 3:18 p.m. EST, Feb. 22.

  2. Astronaut Andrew Allen looks over procedure book in middeck

    NASA Image and Video Library

    1994-03-05

    STS062-12-015 (4-18 March 1994) --- On Coumbia's middeck, astronaut Andrew M. Allen, pilot, looks over a procedures book in the midst of a 14-day mission. Allen is attired in a new thermally controlled undergarment. As part of a detailed test objective, both Allen and John H. Casper, mission commander, wore the undergarments during the launch and entry phases of the flight.

  3. Injuries and illnesses related to Hurricane Andrew--Louisiana, 1992.

    PubMed

    1993-04-09

    On August 26, 1992, Hurricane Andrew struck Louisiana. On August 24, in anticipation of hurricane-related injuries and illnesses, the Office of Public Health (OPH), Louisiana Department of Health and Hospitals, in cooperation with hospital emergency room (ER) and public utility personnel and coroners, established an active emergency surveillance system in 19 parishes to monitor these events. This report summarizes the findings from this emergency surveillance system.

  4. Frequency comparison of optical lattice clocks beyond the Dick limit

    NASA Astrophysics Data System (ADS)

    Takamoto, Masao; Takano, Tetsushi; Katori, Hidetoshi

    2011-05-01

    The supreme accuracy of atomic clocks relies on the universality of atomic transition frequencies. The stability of a clock, meanwhile, measures how quickly the clock's statistical uncertainties are reduced. The ultimate measure of stability is provided by the quantum projection noise, which improves as 1/√N by measuring N uncorrelated atoms. Quantum projection noise limited stabilities have been demonstrated in caesium clocks and in single-ion optical clocks, where the quantum noise overwhelms the Dick effect attributed to local oscillator noise. Here, we demonstrate a synchronous frequency comparison of two optical lattice clocks using 87Sr and 88Sr atoms, respectively, for which the Allan standard deviation reached 1 × 10-17 in an averaging time of 1,600 s by cancelling out the Dick effect to approach the quantum projection noise limit. The scheme demonstrates the advantage of using a large number (N ~ 1,000) of atoms in optical clocks and paves the way to investigating the inherent uncertainties of clocks and relativistic geodesy on a timescale of tens of minutes.

  5. Adiabatic invariants for the regular region of the Dicke model

    NASA Astrophysics Data System (ADS)

    Bastarrachea-Magnani, M. A.; Relaño, A.; Lerma-Hernández, S.; López-del-Carpio, B.; Chávez-Carlos, J.; Hirsch, J. G.

    2017-04-01

    Adiabatic invariants for the non-integrable Dicke model are introduced. They are shown to provide approximate second integrals of motion in the energy region where the system exhibits a regular dynamics. This low-energy region, present for any set of values of the Hamiltonian parameters is described both with a semiclassical and a full quantum analysis in a broad region of the parameter space. Peres lattices in this region exhibit that many observables vary smoothly with energy, along distinct lines which beg for a formal description. It is demonstrated how the adiabatic invariants provide a rationale to their presence in many cases. They are built employing the Born–Oppenheimer approximation, valid when a fast system is coupled to a much slower one. As the Dicke model has one bosonic and one fermionic degree of freedom, two versions of the approximation are used, depending on which one is the faster. In both cases a noticeably accord with exact numerical results is obtained. The employment of the adiabatic invariants provides a simple and clear theoretical framework to study the physical phenomenology associated to these regimes, far beyond the energies where a quadratic approximation around the minimal energy configuration can be used.

  6. On the action of the complete Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Kofinas, Georgios; Tsoukalas, Minas

    2016-12-01

    Recently the most general completion of Brans-Dicke theory has appeared with energy exchanged between the scalar field and ordinary matter, given that the equation of motion for the scalar field keeps the simple wave form of Brans-Dicke. This class of theories contain undetermined functions, but there exist only three theories which are unambiguously determined from consistency. Here, for the first such theory, the action of the vacuum theory is found, which arises as the limit of the full matter theory. A symmetry transformation of this vacuum action in the Jordan frame is found which consists of a conformal transformation of the metric together with a redefinition of the scalar field. Since the general family of vacuum theories is parametrized by an arbitrary function of the scalar field, the action of this family is also found. As for the full theory with matter the action of the system is only found when the matter Lagrangian vanishes on-shell, as for example for pressureless dust. Due to the interaction, the matter Lagrangian is non-minimally coupled either in the Jordan or the Einstein frame.

  7. Born-Infeld gravity with a Brans-Dicke scalar

    NASA Astrophysics Data System (ADS)

    Jana, Soumya; Kar, Sayan

    2017-07-01

    Recently proposed Born-Infeld (BI) theories of gravity assume a constant BI parameter (κ ). However, no clear consensus exists on the sign and value of κ . Recalling the Brans-Dicke (BD) approach, where a scalar field was used to generate the gravitational constant G , we suggest an extension of Born-Infeld gravity with a similar Brans-Dicke flavor. Thus, a new action, with κ elevated to a spacetime dependent real scalar field, is proposed. We illustrate this new theory in a cosmological setting with pressureless dust and radiation as matter. Assuming a functional form of κ (t ), we numerically obtain the scale factor evolution and other details of the background cosmology. It is known that BI gravity differs from general relativity (GR) in the strong-field regime but reduces to GR for intermediate and weak fields. Our studies in cosmology demonstrate how, with this new, scalar-tensor BI gravity, deviations from GR, as well as usual BI gravity, may arise in the weak-field regime too. For example, we note a late-time acceleration without any dark energy contribution. Apart from such qualitative differences, we note that fixing the sign and value of κ is no longer a necessity in this theory, though the origin of the BD scalar does remain an open question.

  8. Simulating Dicke-like superradiance with classical light sources

    NASA Astrophysics Data System (ADS)

    Bhatti, D.; Oppel, S.; Wiegner, R.; Agarwal, G. S.; von Zanthier, J.

    2016-07-01

    In this paper we investigate the close relationship between Dicke superradiance, originally predicted for an ensemble of two-level atoms in entangled states, and the Hanbury Brown and Twiss effect, initially established in astronomy to determine the dimensions of classical light sources such as stars. By studying the state evolution of the fields produced by classical sources—defined by a positive Glauber-Sudarshan P function—when recording intensity correlations of higher order in a generalized Hanbury Brown and Twiss setup we find that the angular distribution of the last detected photon, apart from an offset, is identical to the superradiant emission pattern generated by an ensemble of two-level atoms in entangled symmetric Dicke states. We show that the phenomenon derives from projective measurements induced by the measurement of photons in the far field of the sources and the permutative superposition of quantum paths identical to those leading to superradiance in the case of single photon emitters. We thus point out an important similarity between classical sources and quantum emitters upon detection of photons if the particular photon source remains unknown. We finally present a compact result for the characteristic functional which generates intensity correlations of arbitrary order for any kind of light source.

  9. The application of Dick instrumentation in spine surgery.

    PubMed

    Ye, Q; Li, S; Qiu, G; Xing, W

    1992-03-01

    From June, 1989 to March, 1991, 24 cases with various spinal disorders were treated in our department using the Dick technique. The results were as follows: In the fresh fracture group (7 cases), all the spine fractures were reduced anatomically: the 2 cases without neurological defects returned to work 3 months after operation; the 3 cases with incomplete paraplegia had rapid neurological recovery; and the 2 cases with complete paraplegia showed no recovery after operation. In the late fracture group (10 cases), traumatic kyphotic curves were partially reduced and back pain was decreased markedly in all: Muscle power was increased significantly in 3 cases; spasticity was remarkably improved in 2 cases; 3 cases obtained complete cure of incontinence; and 4 cases had no significant improvement. In 3 cases with ankylosing spondylitis, the initial average kyphotic curve was 73.3 degrees, while the postoperative average curve was 28.3 degrees. The result of treatment of spinal stenosis due to degenerative spondylolisthesis (1 case) was good; slipping vertebrae were stabilized and fused with the Dick system after thorough decompression. In 1 tumor and 2 Tb-spine cases, the patients recovered and were ambulatory soon after operation.

  10. A critique of phrenology in Moby-Dick.

    PubMed

    de Souza, Leonardo Cruz; Teixeira, Antônio Lúcio; de Oliveira, Guilherme Nogueira M; Caramelli, Paulo; Cardoso, Francisco

    2017-09-05

    Phrenology has a fascinating, although controversial, place in the history of localizationism of brain and mental functions. The 2 main proponents of phrenology were 2 German-speaking doctors, Joseph Gall (1758-1828) and Johann Spurzheim (1776-1832). According to their theory, a careful examination of skull morphology could disclose personality characters. Phrenology was initially restricted to medical circles and then diffused outside scientific societies, reaching nonscientific audiences in Europe and North America. Phrenology deeply penetrated popular culture in the 19th century and its tenets can be observed in British and American literature. Here we analyze the presence of phrenologic concepts in Moby-Dick; or, The Whale, by Herman Melville (1819-1891), one of the most prominent American writers. In his masterpiece, he demonstrates that he was familiarized with Gall and Spurzheim's writings, but referred to their theory as "semi-science" and "a passing fable." Of note, Melville's fine irony against phrenology is present in his attempt to perform a phrenologic and physiognomic examination of The Whale. Thus, Moby-Dick illustrates the diffusion of phrenology in Western culture, but may also reflect Melville's skepticism and criticism toward its main precepts. © 2017 American Academy of Neurology.

  11. Dynamical complexity of the Brans-Dicke cosmology

    SciTech Connect

    Hrycyna, Orest; Szydłowski, Marek E-mail: marek.szydlowski@uj.edu.pl

    2013-12-01

    The dynamics of the Brans-Dicke theory with a quadratic scalar field potential function and barotropic matter is investigated. The dynamical system methods are used to reveal complexity of dynamical evolution in homogeneous and isotropic cosmological models. The structure of phase space crucially depends on the parameter of the theory ω{sub BD} as well as barotropic matter index w{sub m}. In our analysis these parameters are treated as bifurcation parameters. We found sets of values of these parameters which lead to generic evolutional scenarios. We show that in isotropic and homogeneous models in the Brans-Dicke theory with a quadratic potential function the de Sitter state appears naturally. Stability conditions of this state are fully investigated. It is shown that these models can explain accelerated expansion of the Universe without the assumption of the substantial form of dark matter and dark energy. The Poincare construction of compactified phase space with a circle at infinity is used to show that phase space trajectories in a physical region can be equipped with a structure of a vector field on nontrivial topological closed space. For ω{sub BD} < −3/2 we show new types of early and late time evolution leading from the anti-de Sitter to the de Sitter state through an asymmetric bounce. In the theory without a ghost we find bouncing solutions and the coexistence of the bounces and the singularity. Following the Peixoto theorem some conclusions about structural stability are drawn.

  12. A pioneer of tropical medicine worldwide: Andrew Balfour, of Khartoum

    PubMed Central

    2013-01-01

    This is an archival account of the career of Sir Andrew Balfour in Khartoum, Sudan during the period 1902 to 1913. As the first director of the Wellcome Tropical Research Laboratories in Khartoum during the period, Andrew Balfour was tasked with establishing the laboratories and at the same time he was engaged in founding the health services in Khartoum. Balfour worked in close collaboration and support from Henry Wellcome and Reginald Wingate, the Governor General of the Sudan. The energetic and meticulous sanitary work of Balfour had a remarkable impact, with Khartoum declared mosquito-free by 1910. Establishing a research base in the laboratories was met with many challenges but eventually Balfour managed to recruit a team of dedicated researchers and to produce well-circulated publications in tropical medicine. Balfour’s work in Khartoum later lead him to a distinguished career in tropical medicine. In 1923 he was appointed the first Director of London School of Hygiene and Tropical Medicine. He was also elected President of the Royal Society of Tropical Medicine and Hygiene (1925–27). Sir Andrew Balfour, KCMG, CB, LL D (1873–1931) PMID:27493361

  13. A pioneer of tropical medicine worldwide: Andrew Balfour, of Khartoum.

    PubMed

    Adeel, Ahmed A A

    2013-01-01

    This is an archival account of the career of Sir Andrew Balfour in Khartoum, Sudan during the period 1902 to 1913. As the first director of the Wellcome Tropical Research Laboratories in Khartoum during the period, Andrew Balfour was tasked with establishing the laboratories and at the same time he was engaged in founding the health services in Khartoum. Balfour worked in close collaboration and support from Henry Wellcome and Reginald Wingate, the Governor General of the Sudan. The energetic and meticulous sanitary work of Balfour had a remarkable impact, with Khartoum declared mosquito-free by 1910. Establishing a research base in the laboratories was met with many challenges but eventually Balfour managed to recruit a team of dedicated researchers and to produce well-circulated publications in tropical medicine. Balfour's work in Khartoum later lead him to a distinguished career in tropical medicine. In 1923 he was appointed the first Director of London School of Hygiene and Tropical Medicine. He was also elected President of the Royal Society of Tropical Medicine and Hygiene (1925-27). Sir Andrew Balfour, KCMG, CB, LL D (1873 -1931).

  14. Dick Effect in a Microwave Frequency Standard Based on Laser-Cooled 113Cd+ Ions

    NASA Astrophysics Data System (ADS)

    Zhang, Jian-Wei; Miao, Kai; Wang, Li-Jun

    2015-01-01

    The Dick effect is one of the main limits to the frequency stability of a passive frequency standard, especially for the fountain clock and ion clock operated in pulsed mode which require unavoidable dead time during interrogation. Here we measure the phase noise of the interrogation oscillator applied in the microwave frequency standard based on laser-cooled 113Cd+ ions, and analyze the Allan deviation limited by the Dick effect. The results indicate that the Dick effect is one of the key issues for the cadmium ion clock to reach expected frequency stability. This problem can be resolved by interrogating the local oscillator continuously with two ion traps.

  15. Dynamics of Brans-Dicke cosmology with varying mass fermions

    SciTech Connect

    Liu Daojun

    2010-09-15

    In this paper, the cosmological dynamics of Brans-Dicke (BD) theory in which there are fermions with a coupling to BD scalar field as well as a self-interaction potential is investigated. The conditions that there exists a solution which is stable and represents a late-time accelerated expansion of the Universe are found. The variable mass of fermions cannot vanish exactly during the evolution of the Universe once it exists initially. It is shown that the late-time acceleration depends completely on the self-interaction of the fermion field if our investigation is restricted to the theory with positive BD parameter {omega}. Provided a negative {omega} is allowed, there will be another two classes of stable solutions describing the late-time accelerated expansion of the Universe.

  16. Dynamical apparent horizons in inhomogeneous Brans-Dicke universes

    NASA Astrophysics Data System (ADS)

    Faraoni, Valerio; Vitagliano, Vincenzo; Sotiriou, Thomas P.; Liberati, Stefano

    2012-09-01

    The presence and evolution of apparent horizons in a two-parameter family of spherically symmetric, time-dependent solutions of Brans-Dicke gravity are analyzed. These solutions were introduced to model space- and time-varying gravitational couplings and are supposed to represent central objects embedded in a spatially flat universe. We find that the solutions possess multiple evolving apparent horizons, both black hole horizons covering a central singularity and cosmological ones. It is not uncommon for two of these horizons to merge, leaving behind a naked singularity covered only by a cosmological horizon. Two characteristic limits are also explicitly worked out: the limit where the theory reduces to general relativity and the limit where the solutions become static. The physical relevance of this family of solutions is discussed.

  17. Wormholes and naked singularities in Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Tretyakova, D. A.; Latosh, B. N.; Alexeyev, S. O.

    2015-09-01

    We perform an analytical and numerical study of static spherically symmetric solutions in the context of the Brans-Dicke-like cosmological model by Elizalde et al (2004 Phys. Rev. D 70 043539) with an exponential potential. In this model the phantom regime arises without the appearance of any ghost degree of freedom due to the specific form of coupling. For certain parameter ranges the model contains a regular solution that we interpret as a wormhole in an otherwise de Sitter Universe. We put several bounds on the parameter values: ω \\lt 0,{α }2/| ω | \\lt {10}-5,22.7≲ {φ }0≲ 25. The numerical solution could mimic the Schwarzschild one, so the original model is consistent with astrophysical and cosmological observational data. However, differences between our solution and the Schwarzschild one can be quite large, so black hole candidate observations could probably place further limits on the {φ }0 value.

  18. (Non-)geodesic motion in chameleon Brans Dicke model

    NASA Astrophysics Data System (ADS)

    Saaidi, K.

    2013-06-01

    Based on Das and Banerjee (Phys. Rev D 78:043512, 2008), we assume there is a non-minimal coupling between scalar field and matter in the Brans-Dicke model. We analyzes the motion of different matter such as, massless scalar field, photon, massless perfect fluid (dust), massive perfect fluid and point particle matter in this study. We show that the motion of massless scalar field and photon can satisfy null geodesic motion only in high frequency limit. Also we find that the motion of the dust and massive perfect fluid is geodesic for L m =- P and it is non-geodesic for L m = ρ. Finally, we study the motion of point particle and show that the motion of this kind of matter is like massive perfect fluid.

  19. Testing Brans-Dicke gravity using the Einstein telescope

    NASA Astrophysics Data System (ADS)

    Zhang, Xing; Yu, Jiming; Liu, Tan; Zhao, Wen; Wang, Anzhong

    2017-06-01

    Gravitational radiation is an excellent field for testing theories of gravity in strong gravitational fields. The current observations on the gravitational-wave (GW) bursts by LIGO have already placed various constraints on the alternative theories of gravity. In this paper, we investigate the possible bounds which could be placed on the Brans-Dicke gravity using GW detection from inspiraling compact binaries with the proposed Einstein Telescope, a third-generation GW detector. We first calculate in detail the waveforms of gravitational radiation in the lowest post-Newtonian approximation, including the tensor and scalar fields, which can be divided into the three polarization modes, i.e., "plus mode," "cross mode," and "breathing mode." Applying the stationary phase approximation, we obtain their Fourier transforms, and derive the correction terms in amplitude, phase, and polarization of GWs, relative to the corresponding results in general relativity. Imposing the noise level of the Einstein Telescope, we find that the GW detection from inspiraling compact binaries, composed of a neutron star and a black hole, can place stringent constraints on the Brans-Dicke gravity. The bound on the coupling constant ωBD depends on the mass, sky position, inclination angle, polarization angle, luminosity distance, redshift distribution, and total observed number NGW of the binary systems. Taking into account all the burst events up to redshift z =5 , we find that the bound could be ωBD≳1 06×(NGW/1 04)1/2. Even for the conservative estimation with 1 04 observed events, the bound is still more than one order tighter than the current limit from Solar System experiments. So, we conclude that the Einstein Telescope will provide a powerful platform to test alternative theories of gravity.

  20. ANDREWS MOUNTAIN, MAZOURKA, AND PAIUTE ROADLESS AREAS, CALIFORNIA.

    USGS Publications Warehouse

    McKee, Edwin H.; Schmauch, Steven W.

    1984-01-01

    On the basis of a mineral survey, local areas near and within the Andrews Mountain, Mazourka, and Paiute Roadless Areas, California have probable and substantiated mineral-resource potential. The principal metallic mineral resources in these roadless areas are gold, copper, and silver with lead, zinc, and tungsten, as lesser resources. A zone of probable resource potential for talc, graphite, and marble is identified in the Mazourka Roadless Area. Metallic mineralization occurs mostly in vein deposits in silicic and carbonate metasedimentary rocks peripheral to Mesozoic plutons and locally in granitic rocks as well. There is little promise for the occurrence of fossil fuel resources in the roadless areas.

  1. X Window Application Extension With the Andrew Toolkit

    DTIC Science & Technology

    1992-09-01

    application generally communicates with the X network protocol through one or more levels of toolkits. X toolkits are pre-packaged libraries of C...Toolkits exist at three distinct levels. The most widely used low-level interface to X is the standard C language library known as Xlib. Xlib defines a set...and class procedures (Palay, 1988, p. 7). Class is a C language-based system consisting of a small run-time library and preprocessor. An Andrew Class is

  2. Prediction of posttraumatic stress symptoms in children after hurricane Andrew.

    PubMed

    Vernberg, E M; Silverman, W K; La Greca, A M; Prinstein, M J

    1996-05-01

    The authors used an integrative conceptual model to examine the emergence of posttraumatic stress disorder (PTSD) symptoms in 568 elementary school-age children 3 months after Hurricane Andrew. The model included 4 primary factors: Exposure to Traumatic Events, Child Characteristics, Access to Social Support, and Children's Coping. Overall, 62% of the variance in children's self-reported PTSD symptoms was accounted for by the 4 primary factors, and each factor improved overall prediction of symptoms when entered in the analyses in the order specified by the conceptual model. The findings suggest that the conceptual model may be helpful to organize research and intervention efforts in the wake of natural disasters.

  3. Making Dick and Jane: Historical Genesis of the Modern Basal Reader.

    ERIC Educational Resources Information Center

    Luke, Allan

    1987-01-01

    This article traces the development of the Dick and Jane texts, examining the dominent intellectual and economic considerations of their authors and publishers in order to demystify their transmission of values, beliefs, and meanings. (MT)

  4. Motional frequency shifts of trapped ions in the Lamb-Dicke regime

    SciTech Connect

    Lizuain, I.; Muga, J. G.; Eschner, J.

    2007-09-15

    First order Doppler effects are usually ignored in laser driven trapped ions when the recoil frequency is much smaller than the trapping frequency (Lamb-Dicke regime). This means that the central, carrier excitation band is supposed to be unaffected by vibronic transitions in which the vibrational number changes. While this is strictly true in the Lamb-Dicke limit (infinitely tight confinement), the vibronic transitions do play a role in the Lamb-Dicke regime. In this paper we quantify the asymptotic behavior of their effect with respect to the Lamb-Dicke parameter. In particular, we give analytical expressions for the frequency shift, 'pulling' or 'pushing', produced in the carrier absorption band by the vibronic transitions both for Rabi and Ramsey schemes. This shift is shown to be independent of the initial vibrational state.

  5. The Dicke Quantum Phase Transition in a Superfluid Gas Coupled to an Optical Cavity

    NASA Astrophysics Data System (ADS)

    Guerlin, Christine; Baumann, Kristian; Brennecke, Ferdinand; Esslinger, Tilman

    2010-03-01

    A fundamental approach to collective matter-light interaction is given by the Dicke model which has been predicted to show an intriguing quantum phase transition. We have realized the Dicke quantum phase transition in an open system formed by a Bose-Einstein condensate coupled to an optical cavity, and observed the emergence of a self-organized supersolid phase [1]. The phase transition is driven by infinitely long-ranged interactions between the condensed atoms. We show that the phase transition is described by the Dicke Hamiltonian, including counter-rotating coupling terms, and that the supersolid phase is associated with a spontaneously broken spatial symmetry. The boundary of the phase transition is mapped out in quantitative agreement with the Dicke model. [4pt] [1] K. Baumann, C. Guerlin, F. Brennecke, T. Esslinger, arXiv 0912.2361, 2009

  6. Cosmic string configuration in a five dimensional Brans-Dicke theory

    SciTech Connect

    Bezerra, V. B.; Ferreira, C. N.; Marques, G. de A

    2010-01-15

    We consider a scalar field interacting with a cosmic string configuration. The origin of the scalar field is given by a compactification mechanism in the context of a five-dimensional Brans-Dicke theory. We analyze the behavior of a charged cosmic string given by the Maxwell-Chern-Simons term on the 3-brane. The Cosmic Microwave Background Radiation constraint is used to analyze the possibility of optical activity effect in connection with the Brans-Dicke parameter {omega}. We show that the dilatons produced by a cosmic string can decay into gauge bosons with masses given by the compactification modes. The Brans-Dicke parameter {omega} imposes stringent constraints on the mass of the dilaton and help us to understand the energy scales. In this scenario the lifetime of the dilaton which decays into light gauge bosons as well as the dependence of this phenomenon with the Brans-Dicke parameter are estimated.

  7. Environmental Assessment for Aerial Application of Pesticide for Gypsy Moth Control, Andrews Air Force Base, Maryland

    DTIC Science & Technology

    2008-04-01

    ENVIRONMENTAL ASSESSMENT FOR AERIAL APPLICATION OF PESTICIDE FOR GYPSY MOTH CONTROL ANDREWS AIR FORCE BASE...to 00-00-2008 4. TITLE AND SUBTITLE Environmental Assessment for Aerial Application of Pesticide for Gypsy Moth Control Andrews Air Force Base...of gypsy moths at Andrews Air Force Base (AFB), Maryland (MD). The EA is prepared in compliance with the National Environmental Policy Act (NEPA) of

  8. Experimental violation of the local realism for four-qubit Dicke state.

    PubMed

    Zhao, Yuan-Yuan; Wu, Yu-Chun; Xiang, Guo-Yong; Li, Chuan-Feng; Guo, Guang-Can

    2015-11-16

    Dicke state is an widely used type of multi-particle entangled state in quantum information. However, very few works have been done on its nonlocality. Here we prepare a four-photon symmetric Dicke state, whose fidelity is as high as 0.904 ± 0.004, and devise a simple Bell-type inequality to demonstrate that it violates the local realism with 12 standard deviation.

  9. Interplay between electron pairing and Dicke effect in triple quantum dot structures

    NASA Astrophysics Data System (ADS)

    Głodzik, S.; Wójcik, K. P.; Weymann, I.; Domański, T.

    2017-03-01

    We study the influence of the proximity-induced pairing on an electronic version of the Dicke effect in a heterostructure, comprising three quantum dots vertically coupled between the metallic and superconducting leads. We discuss a feasible experimental procedure for detecting the narrow/broad (subradiant/superradiant) contributions by means of the subgap Andreev spectroscopy. In the Kondo regime and for small energy level detuning the Dicke effect is manifested in the differential conductance.

  10. Hurricane Andrew-related injuries and illnesses, Louisiana, 1992.

    PubMed

    McNabb, S J; Kelso, K Y; Wilson, S A; McFarland, L; Farley, T A

    1995-06-01

    To determine the extent and types of injuries and illnesses in Louisiana associated with or related to Hurricane Andrew, we gathered data from hospital emergency departments and coroner's offices on demographic variables, institution, nature and cause of the injury or illness, body part affected, location, and date and time of the event. A hurricane-related injury or illness was defined as one that occurred from noon on August 24, 1992, through midnight on September 21, 1992, as a direct or indirect result of the preparation for (preimpact), the impact of, or the clean-up after the hurricane (postimpact). Nineteen parishes in south-central Louisiana that were most affected by Hurricane Andrew provided data from patients seen in emergency departments and reports from coroner's offices. Active, advance surveillance of this type promotes and facilitates the reporting of disaster-related health outcomes. Future planning for hurricanes should take into account the high rate of cuts, lacerations, and puncture wounds, particularly during the postimpact phase.

  11. Pharmaceutical services at a medical site after Hurricane Andrew.

    PubMed

    Nestor, A; Aviles, A I; Kummerle, D R; Barclay, L P; Rey, J A

    1993-09-01

    The experiences of a group of volunteer clinical pharmacists who provided pharmacy services as part of a disaster relief effort following a hurricane are reported. Hurricane Andrew left many people in southern Florida without shelter and other basic necessities, including health care services. A group of seven pharmacists volunteered to provide services at a temporary medical site set up in a community center. The pharmacy stock consisted of donated drugs. The pharmacists dispensed medications directly to patients and worked closely with other volunteer medical personnel to make sure proper medications were used. Because the pharmacy stock was limited, physicians relied upon the pharmacists for information about therapeutic interchanges, dosage conversions, and new medications. Prescriptions were often ordered and dispensed with only oral instructions. The pharmacists also provided patient counseling, although problems caused by inexperience with certain types of patients, a language barrier, and substandard living conditions after the hurricane made counseling more difficult. The contributions of seven pharmacists who provided services at an emergency medical site after Hurricane Andrew were well received by other health care personnel and by the community.

  12. Posttraumatic stress disorder in adolescents after Hurricane Andrew.

    PubMed

    Garrison, C Z; Bryant, E S; Addy, C L; Spurrier, P G; Freedy, J R; Kilpatrick, D G

    1995-09-01

    To examine rates and correlates of posttraumatic stress disorder (PTSD) in adolescents after Hurricane Andrew. A random-digit dialing sample of 158 Hispanic, 116 black, and 104 white adolescent-parent pairs were surveyed in high- and low-impact areas within Dade County, Florida, 6 months after Hurricane Andrew. Subjects completed a structured telephone interview focused on within-disaster experiences and emotional reaction, disaster-related losses, lifetime exposure to violent or traumatic events, recent stressful experiences, and psychiatric symptomatology. Approximately 3% of males (95% confidence interval 0.4 to 5.3) and 9% of females (95% confidence interval 4.6 to 13.7) met the criteria for PTSD. Rates were highest among blacks (8.3%, 95% confidence interval 2.3 to 14.2) and Hispanics (6.1%, 95% confidence interval 2.2 to 9.9) and increased with age (odds ratio of 1.34, 95% confidence interval 1.04 to 1.72) and the number of undesirable events reported (odds ratio of 1.38, 95% confidence interval 1.21 to 1.57). While only a relatively small percentage of adolescents reported symptoms consistent with a diagnosis of PTSD, most reported some posttraumatic symptoms. Postdisaster planning should recognize that common stressful events occurring after disasters may be more strongly associated with PTSD than magnitude of contact with the actual disaster.

  13. FRW cosmology from five dimensional vacuum Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Bahrehbakhsh, Amir F.; Farhoudi, Mehrdad; Shojaie, Hossein

    2011-03-01

    We follow the approach of induced-matter theory for a five-dimensional (5 D) vacuum Brans-Dicke theory and introduce induced-matter and induced potential in four dimensional (4 D) hypersurfaces, and then employ a generalized FRW type solution. We confine ourselves to the scalar field and scale factors be functions of the cosmic time. This makes the induced potential, by its definition, vanishes, but the model is capable to expose variety of states for the universe. In general situations, in which the scale factor of the fifth dimension and scalar field are not constants, the 5 D equations, for any kind of geometry, admit a power-law relation between the scalar field and scale factor of the fifth dimension. Hence, the procedure exhibits that 5 D vacuum FRW-like equations are equivalent, in general, to the corresponding 4 D vacuum ones with the same spatial scale factor but a new scalar field and a new coupling constant, {tilde{ω}} . We show that the 5 D vacuum FRW-like equations, or its equivalent 4 D vacuum ones, admit accelerated solutions. For a constant scalar field, the equations reduce to the usual FRW equations with a typical radiation dominated universe. For this situation, we obtain dynamics of scale factors of the ordinary and extra dimensions for any kind of geometry without any priori assumption among them. For non-constant scalar fields and spatially flat geometries, solutions are found to be in the form of power-law and exponential ones. We also employ the weak energy condition for the induced-matter, that gives two constraints with negative or positive pressures. All types of solutions fulfill the weak energy condition in different ranges. The power-law solutions with either negative or positive pressures admit both decelerating and accelerating ones. Some solutions accept a shrinking extra dimension. By considering non-ghost scalar fields and appealing the recent observational measurements, the solutions are more restricted. We illustrate that the

  14. Research publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon: 1998 supplement.

    Treesearch

    Donald L. Henshaw; Sarah E. Greene; Tami Lowry

    1998-01-01

    This bibliography updates the list of publications, abstracts, theses, and unpublished reports included in "Research Publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon, 1948 to 1986" (General Technical Report PNW-GTR-201) and "Research Publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon: 1988 Supplement...

  15. Sensibility Study of St Andrew Bay Rapid Response System for Naval Applications

    DTIC Science & Technology

    2005-06-01

    But because rain can be significant in St Andrew Bay system, Florida, fresh water, even when rivers lack, is a prevailing salinity regulator through...significant in St Andrew Bay system, Florida, fresh water, even when rivers lack, is a prevailing salinity regulator through ground seepage. Therefore...

  16. Three High Schools Revisited--Andrews, McPherson, and Nova. Profiles of Significant Schools.

    ERIC Educational Resources Information Center

    Kohn, Sherwood D.

    Three schools--Nova High School in Fort Lauderdale, Florida, McPherson Senior High School in McPherson, Kansas, and Andrews Senior High School in Andrews, Texas--are examined in this report. All of them are considered advanced educational plants, and all have been in full operation for less than five years, but most of their innovational aspects…

  17. THREE HIGH SCHOOLS REVISITED--ANDREWS, MCPHERSON, AND NOVA. PROFILES OF SIGNIFICANT SCHOOLS.

    ERIC Educational Resources Information Center

    KOHN, SHERWOOD D.

    THREE SCHOOLS--NOVA HIGH SCHOOL IN FORT LAUDERDALE, FLORIDA, MCPHERSON SENIOR HIGH SCHOOL IN MCPHERSON, KANSAS, AND ANDREWS SENIOR HIGH SCHOOL IN ANDREWS, TEXAS--ARE EXAMINED IN THIS REPORT. ALL OF THEM ARE CONSIDERED ADVANCED EDUCATIONAL PLANTS, AND ALL HAVE BEEN IN FULL OPERATION FOR LESS THAN FIVE YEARS, BUT MOST OF THEIR INNOVATIONAL ASPECTS…

  18. The Implementation of IAS 16 and IAS 41 at Andrew Peller Limited

    ERIC Educational Resources Information Center

    Lapointe-Antunes, Pascale; Moore, James

    2013-01-01

    This case asks students to play the role of Doug Grodeckie, Manager of Financial Reporting at Andrew Peller Limited (APL). Doug was asked to prepare a report analyzing Andrew Peller Limited's current tangible long-lived assets disclosures and making recommendations on how best to comply with International Accounting Standard (IAS) 16 Property,…

  19. A Meta-Analytic Review of the MacAndrew Alcoholism Scale.

    ERIC Educational Resources Information Center

    Cooper-Hakim, Amy; Viswesvaran, Chockalingam

    2002-01-01

    Using meta analysis, examined the predictive validity of scores on the MacAndrew Alcoholism Scale (C. MacAndrew, 1965). Compared results for 161 studies with results for 63 studies using cut scores. Discusses why the use of continuous measures rather than cut scores is recommended. (SLD)

  20. 33 CFR 334.761 - Naval Support Activity Panama City; St. Andrews Bay; restricted areas.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... City; St. Andrews Bay; restricted areas. 334.761 Section 334.761 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND RESTRICTED AREA REGULATIONS § 334.761 Naval Support Activity Panama City; St. Andrews Bay; restricted areas. (a) The areas—(1...

  1. A Meta-Analytic Review of the MacAndrew Alcoholism Scale.

    ERIC Educational Resources Information Center

    Cooper-Hakim, Amy; Viswesvaran, Chockalingam

    2002-01-01

    Using meta analysis, examined the predictive validity of scores on the MacAndrew Alcoholism Scale (C. MacAndrew, 1965). Compared results for 161 studies with results for 63 studies using cut scores. Discusses why the use of continuous measures rather than cut scores is recommended. (SLD)

  2. The Implementation of IAS 16 and IAS 41 at Andrew Peller Limited

    ERIC Educational Resources Information Center

    Lapointe-Antunes, Pascale; Moore, James

    2013-01-01

    This case asks students to play the role of Doug Grodeckie, Manager of Financial Reporting at Andrew Peller Limited (APL). Doug was asked to prepare a report analyzing Andrew Peller Limited's current tangible long-lived assets disclosures and making recommendations on how best to comply with International Accounting Standard (IAS) 16 Property,…

  3. Measurement of perceived disruption during rebuilding following Hurricane Andrew.

    PubMed

    Burnett, K; Ironson, G; Benight, C; Wynings, C; Greenwood, D; Carver, C S; Cruess, D; Baum, A; Schneiderman, N

    1997-10-01

    The purpose of this study was to develop and evaluate a measure of perceived disruption during rebuilding following a disaster. Two eight-item scales, which measured intensity of disruption during the entire repair phase (Intensity-RP) and intensity of disruption during the past month (Intensity-PM) were developed and administered to 135 survivors of Hurricane Andrew. At 9 to 12 months postdisaster, Intensity-RP and Intensity-PM were both significantly associated with scores on the Global Severity Index of the SCL-90-R, and with scores on the Impact of Event-Intrusion Scale; Intensity-PM alone was significantly associated with PTSD scores. Regression analyses indicated that each scale contributed significant unique variance in predicting mental health symptoms, even after controlling for relevant demographic and initial disaster exposure variables.

  4. Food-related coping strategies after Hurricane Andrew.

    PubMed

    Magnus, M H

    1994-06-01

    This telephone survey examined food-related coping strategies in Floridian households after Hurricane Andrew. Approximately 137 households of university faculty and staff who lived in hurricane-damaged areas were interviewed. The average respondent was a college-educated woman between 41 and 60 years old. Prevailing food-purchasing problems included food stores that were either closed, without perishable food, distant, or crowded. In the absence of electricity and water, changes in food preparation included preparation of meals without a stove, more frequent use of grills and canned food, simpler meals, and less cooking. Changes in kitchen cleanup included using more disposables, cleaning more often, washing dishes by hand, and cleaning up less often because of damage in the kitchen. Respondents indicated that the hurricane experience taught them that they should have acquired more general supplies (eg, coolers, thermoses, propane stoves, and gas burners), more water and ice, and more nonperishable foods before the hurricane.

  5. From the Jaynes-Cummings-Hubbard to the Dicke model

    NASA Astrophysics Data System (ADS)

    Schmidt, S.; Blatter, G.; Keeling, J.

    2013-11-01

    We discuss the Jaynes-Cummings-Hubbard model describing the superfluid-Mott insulator transition of polaritons (i.e., dressed photon-qubit states) in coupled qubit-cavity arrays in the crossover from strong to weak correlations. In the strongly correlated regime the phase diagram and the elementary excitations of lattice polaritons near the Mott lobes are calculated analytically using a slave-boson theory (SBT). The opposite regime of weakly interacting polariton superfluids is described by a weak-coupling mean-field theory for a generalized multi-mode Dicke model. We show that a remarkable relation between the two theories exists in the limit of large photon bandwidth and large negative detuning, i.e., when the nature of polariton quasiparticles becomes qubit-like. In this regime, the weak-coupling theory predicts the existence of a single Mott lobe with a change of the universality class of the phase transition at the tip of the lobe, in perfect agreement with the SBT. Moreover, the spectra of low energy excitations, i.e., the sound velocity of the Goldstone mode and the gap of the amplitude mode match exactly as calculated from both theories.

  6. [A legend of tropical veterinary medicine: Dick Zwart].

    PubMed

    Dwinger, Ron; Uilenberg, Gerrit

    2014-01-01

    An overview is given of the achievements of Professor Dr. D. Zwart (1930-2005). Following a brief introduction dealing with his background, his first eleven years of working in tropical countries are reviewed. Initially he was employed as a government veterinarian in Dutch New Guinea, followed by five years as a scientist at the agricultural faculty in Kumasi, Ghana, where he completed his PhD on liver cirrhosis in local pigs. He was seconded by the Department of Tropical Veterinary Medicine at Utrecht University to work as a virologist in Vom, Nigeria. Once back in The Netherlands, he was selected to take over the position of head of the Department due to the unexpected death of Professor S. G. Wilson. He stayed for 20 years at Utrecht University and was for another nine years department head at the Agricultural University of Wageningen. He was an influential man during this long period as department head, not only for his students, but also in the international field. Four aspects of the achievements by Dick are highlighted in detail: as a scientist, as an educator, as a stimulating figure, and as a visionary.

  7. Generating resonating-valence-bond states through Dicke subradiance

    NASA Astrophysics Data System (ADS)

    Ganesh, R.; Theerthagiri, L.; Baskaran, G.

    2017-09-01

    Dicke's original thought experiment with two spins (two-level atoms) coupled to a photon mode has recently been experimentally realized. We propose extending this experiment to many spins as a way to synthesize highly entangled states. We suggest a protocol in which we start with a direct product state of M atoms in the excited state and N atoms in the ground state, placed within a lossy cavity. A null observation for photon emission collapses the system onto a dark state which, remarkably, has resonating-valence-bond (RVB) character. We demonstrate this by taking advantage of the symmetry of the initial state under permutations of the M excited atoms and of the N unexcited atoms. Using angular momentum analysis, we reexpress the wave function of the dark state to illustrate its RVB character. We discuss two limiting cases in detail, with M =1 (one excited atom) and M =N (equal number of excited and unexcited atoms). In the latter case, we show that the probability for null emission scales as N-1, making it possible to generate highly entangled RVB states of 20 spins or more.

  8. Deaths related to Hurricane Andrew in Florida and Louisiana, 1992.

    PubMed

    Combs, D L; Parrish, R G; McNabb, S J; Davis, J H

    1996-06-01

    Information about circumstances leading to disaster-related deaths helps emergency response coordinators and other public health officials respond to the needs of disaster victims and develop policies for reducing the mortality and morbidity of future disasters. In this paper, we describe the decedent population, circumstances of death, and population-based mortality rates related to Hurricane Andrew, and propose recommendations for evaluating and reducing the public health impact of natural disasters. To ascertain the number and circumstances of deaths attributed to Hurricane Andrew in Florida and Louisiana, we contacted medical examiners in 11 Florida counties and coroners in 36 Louisiana parishes. In Florida medical examiners attributed 44 deaths to the hurricane. The mortality rate for directly-related deaths was 4.4 per 1 000 000 population and that for indirectly-related deaths was 8.5 per 1 000 000 population. In Louisiana, coroners attributed 11 resident deaths to the hurricane. Mortality rates were 0.6 per 1000 000 population for deaths directly related to the storm and 2.8 for deaths indirectly related to the storm. Six additional deaths occurred among non-residents who drowned in international waters in the Gulf of Mexico. In both Florida and Louisiana, mortality rates generally increased with age and were higher among whites and males. In addition to encouraging people to follow existing recommendations, we recommend emphasizing safe driving practices during evacuation and clean-up, equipping shelters with basic medical needs for the population served, and modifying zoning and housing legislation. We also recommend developing and using a standard definition for disaster-related deaths, and using population-based statistics to describe the public health effectiveness of policies intended to reduce disaster-related mortality.

  9. Necessary work: discovering old forests, new outlooks, and community on the H.J. Andrews Experimental Forest, 1948-2000.

    Treesearch

    Max G. Geier

    2007-01-01

    The H.J. Andrews Experimental Forest (Andrews Forest) is both an idea and a particular place. It is an experimental landscape, a natural resource, and an ecosystem that has long inspired many people. On the landscape of the Andrews Forest, some of those people built the foundation for a collaborative community that fosters closer communication among the scientists and...

  10. 77 FR 35373 - Duke Energy Dicks Creek, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Duke Energy Dicks Creek, LLC; Supplemental Notice That Initial Market-Based... above-referenced proceeding of Duke Energy Dicks Creek, LLC's application for market-based...

  11. Brans-Dicke cosmology in R1×S1×S2 topological space-time.

    NASA Astrophysics Data System (ADS)

    Chakraborty, S.; Ghosh, T. K.

    1999-10-01

    The authors study the spherically symmetric Kontowski-Sachs metric using Brans-Dicke theory. Explicit solutions are determined for the vacuum and for a perfect-fluid model, using transformation of the time variable or assuming some power law relation between the metric coefficients and the Brans-Dicke scalar field.

  12. Nonlinearly charged dilatonic black holes and their Brans-Dicke counterpart: energy dependent spacetime

    NASA Astrophysics Data System (ADS)

    Hendi, S. H.; Talezadeh, M. S.

    2017-01-01

    Regarding the wide applications of dilaton gravity in the presence of electrodynamics, we introduce a suitable Lagrangian for the coupling of dilaton with gauge field. There are various Lagrangians which show the coupling between scalar fields and electrodynamics with correct special situations. In this paper, taking into account conformal transformation of Brans-Dicke theory with an electrodynamics Lagrangian, we show that how scalar field should couple with electrodynamics in dilaton gravity. In other words, in order to introduce a correct Lagrangian of dilaton gravity, one should check at least two requirements: compatibility with Brans-Dicke theory and appropriate special situations. Finally, we apply the mentioned method to obtain analytical solutions of dilaton-Born-Infeld and Brans-Dicke-Born-Infeld theories with energy dependent spacetime.

  13. Dicke superradiance as nondestructive probe for the state of atoms in optical lattices

    NASA Astrophysics Data System (ADS)

    Brinke, Nicolai ten; Schützhold, Ralf

    2016-05-01

    We present a proposal for a probing scheme utilizing Dicke superradiance to obtain information about ultracold atoms in optical lattices. A probe photon is absorbed collectively by an ensemble of lattice atoms generating a Dicke state. The lattice dynamics (e.g., tunneling) affects the coherence properties of that Dicke state and thus alters the superradiant emission characteristics - which in turn provides insight into the lattice (dynamics). Comparing the Bose-Hubbard and the Fermi-Hubbard model, we find similar superradiance in the strongly interacting Mott insulator regime, but crucial differences in the weakly interacting (superfluid or metallic) phase. Furthermore, we study the possibility to detect whether a quantum phase transition between the two regimes can be considered adiabatic or a quantum quench.

  14. Modified Brans-Dicke theory with space-time anisotropic parameters

    SciTech Connect

    Moon, Taeyoon; Oh, Phillial E-mail: ploh@skku.edu

    2014-03-01

    We consider the ADM formalism of the Brans-Dicke theory and propose a space-time anisotropic extension of the theory by introducing five free parameters. We find that the resulting theory reveals many interesting aspects which are not present in the original BD theory. We first discuss the ghost instability and strong coupling problems which are present in the gravity theory without the full diffeomorphism symmetry and show that they can be avoided in a region of the parameter space. We also perform the post-Newtonian approximation and show that the constraint of the Brans-Dicke parameter ω{sub BD} being large to be consistent with the solar system observations could be evaded in the extended theory. We also discuss that accelerating Universe can be achieved without the need of the potential for the Brans-Dicke scalar.

  15. Modified Brans-Dicke gravitational theory with nonzero divergence of the energy-momentum tensor

    NASA Technical Reports Server (NTRS)

    Smalley, L. L.

    1974-01-01

    The Brans-Dicke theory of gravitation is modified by assuming that the divergence of the energy-momentum tensor is proportional to the covariant derivative of the scalar curvature. No ad hoc additions to the usual Brans-Dicke field equations are required as in Rastall's modification of the Einstein theory or as in the steady-state theories, of which this is a natural possibility. Three parameters emerge from the theory - namely, the unnormalized gravitational constant, the usual Brans-Dicke parameter, and the proportionality constant. In the post-Newtonian approximation, these parameters can be fixed by experiment. However, there exists a certain choice of the parameters for which the theory reduces to an Einstein theory with constant scalar curvature.

  16. A transnational conference romance: Elsie Andrews, Hildegarde Kneeland, and the Pan-Pacific Women's Association.

    PubMed

    Laurie, Alison J

    2009-01-01

    Elsie Andrews, a feminist activist from New Zealand, met Dr. Hildegarde Kneeland, a progressive economist from the United States, at the 1934 Pan-Pacific Women's Association conference in Honolulu. Andrews wrote diaries of her attendance at conferences, and in these writes openly of her attraction and romantic feelings for Kneeland, despite her own long-term domestic partnership back in New Plymouth with Muriel Kirton. This article considers the role conference romances may have played for Andrews and others in encouraging their interest in women's organizations, in the context of literature on romantic friendships and lesbianism.

  17. Five dimensional spherically symmetric cosmological model in Brans-Dicke theory of gravitation

    NASA Astrophysics Data System (ADS)

    Rao, V. U. M.; Jaysudha, V.

    2015-08-01

    In this paper, we consider the spherically symmetric space-time in five dimensions in Brans-Dicke (Phys. Rev. 124:925, 1961) theory of gravitation in the presence of perfect fluid distribution. A determinate solution of the highly non-linear field equations is presented using (i) relation between metric potentials and (ii) an equation of state which represents disordered radiation in five dimensional universe. The solution obtained describes five dimensional radiating model in Brans-Dicke theory. Some physical and kinematical properties of the model are also discussed.

  18. {gamma} parameter and Solar System constraint in chameleon-Brans-Dicke theory

    SciTech Connect

    Saaidi, Kh.; Mohammadi, A.; Sheikhahmadi, H.

    2011-05-15

    The post Newtonian parameter is considered in the chameleon-Brans-Dicke model. In the first step, the general form of this parameter and also effective gravitational constant is obtained. An arbitrary function for f({Phi}), which indicates the coupling between matter and scalar field, is introduced to investigate validity of solar system constraint. It is shown that the chameleon-Brans-Dicke model can satisfy the solar system constraint and gives us an {omega} parameter of order 10{sup 4}, which is in comparable to the constraint which has been indicated in [19].

  19. Thermodynamics of charged rotating solutions in Brans-Dicke gravity with Born-Infeld field

    NASA Astrophysics Data System (ADS)

    Pakravan, J.; Takook, M. V.

    2017-09-01

    We derive new exact charged rotating solutions of (n+1)-dimensional Brans-Dicke theory in the presence of Born-Infeld field and investigated their properties. Because of the coupling between scalar field and curvature, the field equations cannot to be solved directly. Using a new conformal transformation, which transforms the Einstein-dilaton-Born-Infeld gravity Lagrangian to the Brans-Dicke-Born-Infeld gravity one, the field equations are solved. We also compute temperature, charge, mass, electric potential, and entropy; entropy, however, does not obey the area law. These quantities are invariant under conformal transformation and satisfy the first law of thermodynamics.

  20. Generation of Dicke states in the ultrastrong-coupling regime of circuit QED systems

    NASA Astrophysics Data System (ADS)

    Wu, Chunfeng; Guo, Chu; Wang, Yimin; Wang, Gangcheng; Feng, Xun-Li; Chen, Jing-Ling

    2017-01-01

    Ultrastrong coupling in circuit quantum electrodynamics makes enhanced fast quantum operations possible. We present a scheme to realize controllable qubit-resonator interactions in ultrastrong circuit quantum electrodynamics with the aid of a unitary transformation. The controllable qubit-resonator interaction is just one type of the so-called selective resonant interactions. From the effective dynamics, it is possible to create the multipartite Dicke states at nanoseconds with high fidelity if the large detuning constraint of the selective resonant interaction is fulfilled. We also investigate the performance of our scheme in the presence of decoherence. Our results present a promising way toward achieving enhanced fast generation of the Dicke states.

  1. Dicke coherent narrowing in two-photon and Raman spectroscopy of thin vapor cells

    SciTech Connect

    Dutier, Gabriel; Todorov, Petko; Hamdi, Ismahene; Maurin, Isabelle; Saltiel, Solomon; Bloch, Daniel; Ducloy, Martial

    2005-10-15

    The principle of coherent Dicke narrowing in a thin vapor cell, in which sub-Doppler spectral line shapes are observed under a normal irradiation for a {lambda}/2 thickness, is generalized to two-photon spectroscopy. Only the sum of the two wave vectors must be normal to the cell, making the two-photon scheme highly versatile. A comparison is provided between the Dicke narrowing with copropagating fields, and the residual Doppler broadening occurring with counterpropagating geometries. The experimental feasibility is discussed on the basis of a first observation of a two-photon resonance in a 300-nm-thick Cs cell. Extension to the Raman situation is finally considered.

  2. Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles

    SciTech Connect

    Zheng Shibiao

    2011-09-15

    We study the coherent cooperative phenomena of the system composed of two interacting atomic ensembles in the thermodynamic limit. Remarkably, the system exhibits the Dicke-like quantum phase transition and entanglement behavior although the governing Hamiltonian is fundamentally different from the spin-boson Dicke Hamiltonian, offering the opportunity for investigating collective matter-light dynamics with pure matter waves. The model can be realized with two Bose-Einstein condensates or atomic ensembles trapped in two optical cavities coupled to each other. The interaction between the two separate samples is induced by virtual photon exchange.

  3. Thermodynamics of charged rotating solutions in Brans-Dicke gravity with Born-Infeld field

    NASA Astrophysics Data System (ADS)

    Pakravan, J.; Takook, M. V.

    2017-07-01

    We derive new exact charged rotating solutions of (n+1) -dimensional Brans-Dicke theory in the presence of Born-Infeld field and investigated their properties. Because of the coupling between scalar field and curvature, the field equations cannot to be solved directly. Using a new conformal transformation, which transforms the Einstein-dilaton-Born-Infeld gravity Lagrangian to the Brans-Dicke-Born-Infeld gravity one, the field equations are solved. We also compute temperature, charge, mass, electric potential, and entropy; entropy, however, does not obey the area law. These quantities are invariant under conformal transformation and satisfy the first law of thermodynamics.

  4. Andrew Liehr and the structure of Jahn-Teller surfaces

    NASA Astrophysics Data System (ADS)

    Chibotaru, Liviu F.; Iwahara, Naoya

    2017-05-01

    The present article is an attempt to draw attention to a seminal work by Andrew Liehr “Topological aspects of conformational stability problem” [1, 2] issued more than half century ago. The importance of this work stems from two aspects of static Jahn-Teller and pseudo-Jahn-Teller problems fully developed by the author. First, the work of Liehr offers an almost complete overview of adiabatic potential energy surfaces for most known Jahn-Teller problems including linear, quadratic and higher-order vibronic couplings. Second, and most importantly, it identifies the factors defining the structure of Jahn-Teller surfaces. Among them, one should specially mention the minimax principle stating that the distorted Jahn-Teller systems tend to preserve the highest symmetry consistent with the loss of their orbital degeneracy. We believe that the present short reminiscence not only will introduce a key Jahn-Teller scientist to the young members of the community but also will serve as a vivid example of how a complete understanding of a complex problem, which the Jahn-Teller effect certainly was in the beginning of 1960s, can be achieved.

  5. Psychological effects of Hurricane Andrew on an elementary school population.

    PubMed

    Shaw, J A; Applegate, B; Tanner, S; Perez, D; Rothe, E; Campo-Bowen, A E; Lahey, B L

    1995-09-01

    To explore the prevalence and progression of posttraumatic symptomatology (PTS), using emotional and behavioral indices of psychopathology in school-age children in the pathway of Hurricane Andrew (HI-IMPACT) and in a comparison group north of Miami (LO-IMPACT). Pynoos' Posttraumatic Stress Disorder Reaction Index and Achenbach's Teacher's Report Form (TRF) were administered 8 weeks and 32 weeks after the hurricane. In addition, 21 measures of disruptive behavior cataloged by Dade County Public Schools were aggregated and compared by grading period between pre- and posthurricane school years. There were no statistically significant differences between the two schools in PTS at 8 weeks after the hurricane, although the children in the HI-IMPACT school were more likely to have severe PTS. TRF findings at 8 weeks revealed that children in the HI-IMPACT school evidenced lower means on the eight TRF scales and on the broader Internalizing and Externalizing measures. Analysis of the disruptive behavior revealed a drop in the marking period immediately after the hurricane in the HI-IMPACT area, but an opposite effect was observed in the LO-IMPACT area. After the hurricane there was an initial increase in PTS and a concomitant decrease in other measures of behavior and psychopathology. PTS remained relatively high throughout the school year, but there was a rebound and subsequent normalization of the measures of disruptive behavior.

  6. Cloud-to-ground lightning in Hurricane Andrew

    NASA Astrophysics Data System (ADS)

    Molinari, John; Moore, Paul K.; Idone, Vincent P.; Henderson, Ronald W.; Saljoughy, Arsalan B.

    1994-08-01

    The spatial and temporal distribution of cloud-to-ground lightning was examined in Hurricane Andrew of 1992. Lightning locations available from the National Lightning Detection Network were superimposed on infrared satellite images to relate lightning activity to hurricane cloud structure. A distinct radial variation occurred in time-averaged flash density, with a weak maximum in the eye wall, a region of near-zero flash density 40 to 100 km from the center, and a steady increase to a large maximum in the outer rainbands 190 km from the center. This radial distribution is consistent with the convective structure of mature hurricanes. Eye wall lightning tended to be episodic, occurring almost exclusively prior to and during periods of intensification of the storm. During these periods, negative flashes occurred several kilometers inward from the highest eye wall cloud tops, in the region of the largest radar reflectivity. Positive eye wall flashes, while small in number, tended to occur directly under the highest cloud tops. The results are suggestive of a normal dipole in sign but outwardly tilted along the sloping eye wall. In general, hurricane flash characteristics resembled those for a background data set of nonhurricane flashes from the same area. The exception occurred for negative flashes in the eye wall, which had a much smaller mean peak current than the background (25.3 kA versus 44.9 kA).

  7. ISS Update: RATS Principal Investigator Andrew Abercromby -- 08.29.12

    NASA Image and Video Library

    NASA Public Affairs Officer Brandi Dean talks to the Research And Technology Studies (RATS) Principal Investigator Andrew Abercromby in the Space Vehicle Mock-Up Facility at Johnson Space Center in...

  8. Report: Results of Technical Network Vulnerability Assessment: EPA’s Andrew W. Breidenbach Environmental Research Center

    EPA Pesticide Factsheets

    Report #10-P-0210, September 7, 2010. Vulnerability testing of EPA’s Andrew W. Breidenbach Environmental Research Center network conducted in June 2010 identified Internet Protocol addresses with numerous high-risk and medium-risk vulnerabilities.

  9. Casting Net Assessment: Andrew W. Marshall and the Epistemic Community of the Cold War

    DTIC Science & Technology

    2012-06-01

    The Making of a Modern City (Berkeley, CA: University of California Press, 1987), 13. 9 Paul Vachon , Images of America: Forgotten Detroit (Chicago...interview with the author, 21 February 2012. 29 Vachon , Forgotten Detroit, 71; Andrew Marshall, interview with the author, 21 February 2012. 30...accessed 19 January 2012). 40 Vachon , Forgotten Detroit, 70. 41 Andrew Marshall, interview with the author, 21 February 2012. 42 Otha Spencer, Flying

  10. Christa McAuliffe and Dick Scobee in Shuttle mission simulator

    NASA Technical Reports Server (NTRS)

    1985-01-01

    Astronaut Francis R. (Dick) Scobee, STS 51-L commander, briefs Payload specialist Sharon Christa McAuliffe about some of the flight systems of the Space Shuttle during a training session in JSC's Shuttle mission simulator. They are on the flight deck with McAuliffe seated at the pilot's station and Scobee at the commander's station.

  11. Teaching Psychology and Literature: Melancholia as Motivation in the Novels of Dick Francis

    ERIC Educational Resources Information Center

    Wagner, Elaine

    2010-01-01

    Teaching literature from a psychological perspective provides a basis for the study and analysis of human motivation and behavior, as psychology and literature make mutual contributions to the study of both disciplines. Melancholia is a recurring theme in the novels of Dick Francis, and the first-person accounts of despair and depression are…

  12. Pursuing "Moby-Dick" in the Classroom, the Museum, Back in the Classroom, and Beyond.

    ERIC Educational Resources Information Center

    Wallace, Robert K.; Zlatkin, Aaron; Hixson, Lindsay; Kallmeyer, Robert J.; Sekowski, Kristen; Brock, Gina R.; Gallagher, Michael; Fletcher, William Ryan

    1997-01-01

    Describes a university course that explored the novel "Moby Dick" by Herman Melville and its relation to art highlighting the two student initiatives. Provides the opening statements from each of the 12 students at the National Association for Humanities Education Convention from their presentation on the course where they each related…

  13. Classical and quantum solutions in Brans-Dicke cosmology with a perfect fluid

    NASA Astrophysics Data System (ADS)

    Paliathanasis, Andronikos; Tsamparlis, Michael; Basilakos, Spyros; Barrow, John D.

    2016-02-01

    We consider the application of group invariant transformations in order to constrain a flat isotropic and homogeneous cosmological model, containing a Brans-Dicke scalar field and a perfect fluid with a constant equation of state parameter w , where the latter is not interacting with the scalar field in the gravitational action integral. The requirement that the Wheeler-DeWitt equation be invariant under one-parameter point transformations provides us with two families of power-law potentials for the Brans-Dicke field, in which the powers are functions of the Brans-Dicke parameter ωBD and the parameter w . The existence of the Lie symmetry in the Wheeler-DeWitt equation is equivalent to the existence of a conserved quantity in field equations and with oscillatory terms in the wave function of the Universe. This enables us to solve the field equations. For a specific value of the conserved quantity, we find a closed-form solution for the Hubble factor, which is equivalent to a cosmological model in general relativity containing two perfect fluids. This provides us with different models for specific values of the parameters ωBD , and w . Finally, the results hold for the specific case where the Brans-Dicke parameter ωBD is zero, that is, for the O'Hanlon massive dilaton theory and, consequently, for f (R ) gravity in the metric formalism.

  14. Possible observational manifestations of wormholes in the Brans-Dicke theory

    SciTech Connect

    Alexeyev, S. O. Rannu, K. A.; Gareeva, D. V.

    2011-10-15

    The energy flux emitted during the accretion of matter onto a wormhole in the Brans-Dicke theory has been calculated. This characteristic is compared with its values calculated previously for wormholes in general relativity and for a Schwarzschild black hole.

  15. Some properties of magnetized Bonnor-dihole solution in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Kirezli, Pinar; Delice, Ozgur

    2017-02-01

    Some properties of magnetized Bonnor-dihole solution in Brans-Dicke (BD) theory is discussed. Conical deficit angle and equatiorial geodesics of timelike and null particles are investigated in detail for different values of the parameters of the BD solution.

  16. New agegraphic dark energy model in Brans-Dicke theory with logarithmic form of scalar field

    NASA Astrophysics Data System (ADS)

    Kumar, Pankaj; Singh, C. P.

    2017-03-01

    In this paper, the cosmological evolution of new agegraphic dark energy (NADE) model is analyzed in Brans-Dicke theory within the framework of Friedmann-Robertson-Walker Universe. The power-law assumption on Brans-Dicke scalar field is reconsidered by assuming the logarithmic form. We derive the equation of state parameter wD and deceleration parameter q of NADE model. It is observed that wD→ -1 when a→ ∞, i.e., the NADE mimics cosmological constant in the late time evolution. Indeed, due to the assumption of logarithmic form of Brans-Dicke scalar field the NADE in Brans-Dicke theory behaves like NADE in general relativity in the late time evolution. The NADE model shows a phase transition from matter dominated phase in early time to accelerated phase in late time. We further extend NADE model by including the interaction between dark matter and NADE. In this case, wD definitely crosses the phantom divide line (wD=-1) in the late time evolution. The phase transition from matter dominated to NADE dominated phase may be achieved at early stage in interacting model. Further, we show that the interacting NADE model resolves the cosmic coincidence problem as the energy density ratio may evolve sufficiently slow at present.

  17. Reply to ``Comment on `Brans-Dicke wormholes in the Jordan and Einstein frames' ''

    NASA Astrophysics Data System (ADS)

    Nandi, Kamal K.

    1999-04-01

    This reply to the Comment by Bloomfield clarifies that the Brans-Dicke wormhole condition is (C+1)2>λ2 rather than (C+1)>λ, as suggested in our earlier paper. Various cases depending on the signs of (C+1) and λ arise. The radial tidal accelerations are indeed finite, as correctly pointed out by Bloomfield.

  18. Carotenoid pigments in the Bryum ventricosum Dicks 1785 from the Pletvicki Lakes (Yugoslavia).

    PubMed

    Czeczuga, B

    1972-03-01

    Investigations have been carried out on the carotenoids in Bryum ventricosum Dicks (Bryophyta) from the Pletwicki Lakes (Yugoslavia). The presence of the carotenoids α-carotene, cryptoxanthin, lutein (epoxy and free), zeaxanthin, violaxanthin, and neoxanthin was determined by means of column and thin-layer chromatography.

  19. Active morbidity surveillance after Hurricane Andrew--Florida, 1992.

    PubMed

    Lee, L E; Fonseca, V; Brett, K M; Sanchez, J; Mullen, R C; Quenemoen, L E; Groseclose, S L; Hopkins, R S

    1993-08-04

    To describe the health status of and to detect disease outbreaks in the population affected by Hurricane Andrew in south Dade County, Florida. The Florida Department of Health and Rehabilitative Services and the US Army conducted active surveillance for gastrointestinal illness, respiratory illness, injury, and other index conditions by monitoring civilian and service member visits to care sites (civilian and military free care sites and hospital emergency departments) from August 30 (1 week after the hurricane's landfall) through September 30, 1992. South Dade County, Florida. Proportional morbidity: the number of daily visits for each index condition divided by the total number of visits, expressed as a percentage. Morbidity rate: the total number of daily visits by service members divided by the total number of service members, expressed as a percentage. Six index conditions accounted for 41.3% of visits to civilian free care sites: diarrhea (4.7%), cough (4.7%), other infection (9.6%), rash (5.4%), animal bite (1.2%), and injury (15.7%). At military free care sites, five index conditions accounted for 75.7% of civilian visits: injury (23.7%), dermatologic illness (12.4%), respiratory illness (9.9%), gastrointestinal illness (5.3%), and other medical conditions (24.4%). Two index conditions accounted for 54.1% of service member visits: injury (36.2%) and dermatologic illness (17.9%). During the 5 weeks after the hurricane, proportional morbidity from injury decreased; proportional morbidity from respiratory illness increased; and proportional morbidity from diarrhea was stable. No infectious disease outbreaks occurred. Injuries were an important source of morbidity throughout the surveillance period, especially among service members. Enteric and respiratory agents did not cause disease outbreaks, despite alarming rumors to the contrary.

  20. Andrew meets Rensch: sexual size dimorphism and the inverse of Rensch's rule in Andrew's toad (Bufo andrewsi).

    PubMed

    Liao, Wen Bo; Liu, Wen Chao; Merilä, Juha

    2015-02-01

    Variation in sexual size dimorphism (SSD) is a widespread phenomenon and is commonly attributed to variation in sex-specific patterns of selection. According to Rensch's rule, SSD increases with increasing body size when males are the larger sex, and decreases when females are the larger sex. Using data from 17 populations of Andrew's toad (Bufo andrewsi), we tested whether the patterns of SSD conform to Rensch's rule. Using field experiments, we also evaluated the hypothesis that sexual selection favours large male body size and that fecundity selection favours large female body size. The results revealed that the degree of SSD increased with increasing mean size in females, consistent with the inverse of Rensch's rule. Although experiments revealed evidence for a large-male mating advantage, selection for large male size was weak at best, and hence unlikely to be an important source of variation in SSD. However, fecundity selection favouring large females was evident, and likely to explain the observed inverse of Rensch's rule. After correcting male and female body size for age differences, the patterns of SSD remained the same, suggesting that the intra- and interpopulational variation in SSD is not driven by sex differences in age structure. Hence, these findings suggest that the strong fecundity selection favouring large females drives the evolution of female-biased SSD in B. andrewsi, providing an explanation for the inverse of Rensch's rule. As such, the study provides an important addition to the small body of literature that uses an intraspecific approach to demonstrate the inverse of Rensch's rule.

  1. The life of Andrew Boorde, c1490-1549.

    PubMed

    Fletcher, Patricia E S

    2002-01-01

    Physician, traveller, writer and spy, Andrew Boorde was born c1490 and became a Carthusian monk after abandoning his medical studies at Oxford. Temperamentally unsuited to the life of a religious, after 20 years at the London Charterhouse he obtained a dispensation to travel to Europe to continue his medical studies. Returning to England he began to practise medicine, treating members of the nobility and, through a meeting with Thomas Cromwell which was to influence the rest of his life, he attended the King, Henry VIII. In 1534, after a second, more extensive, tour of Europe in which he visited many medical schools and universities seeking yet more medical knowledge, he returned to the London Charterhouse which was undergoing a brutal dissolution at the hands of Thomas Cromwell. Boorde reluctantly signed the Oath of Supremacy, an act which was to haunt him for the rest of his life. He was then used by Cromwell to travel abroad again but this time as a spy to gather intelligence for the King while continuing to study medicine. Boorde finally took his MD at the University of Montpellier and was incorporated in the same degree a year later at Oxford. He then gave expression to all he had learnt by writing his legacy, four books which were published in 1547. 'A Compendyous Regyment or a Dyetary of Health' was one of the earliest treatises on the cultivation of health composed in England and stressed the importance of sanitation together with a detailed examination of diet. The 'Brevyary of Health' listed diseases alphabetically together with remedies and treatment, blending sound medical advice with religion and superstition: its companion volume was 'The Principles of Astronomy'. But Boorde's 'Fyrst Boke of the Introduction of Knowledge' was his tour-de-force; it was a comprehensive encyclopaedia of all the European countries he had visited, illustrated by woodcuts. By 1547 Boorde was settled in England, probably Master of the Hospital of St Giles-in-the-Fields in

  2. Final Environmental Assessment for FY07-11 BRAC Construction Requirements at Andrews Air Force Base, Maryland

    DTIC Science & Technology

    2007-09-01

    area of Andrews AFB. The ramp currently has several damaged concrete slabs and deteriorated patches and seals. Damaged and Final EA for FY07-11 BRAC...Construction, Andrews AFB, Maryland Andrews AFB, MD September 2007 1-2 deteriorated pavements are a source of potential foreign object damage to...flood damage ; minimize the impacts of floods on human safety, health, and welfare; and to restore and preserve the natural and beneficial values

  3. The McAndrews Leadership Lecture: February 2015, by Dr Scott Haldeman. Challenges of the Past, Challenges of the Present

    PubMed Central

    Haldeman, Scott; McAndrews, George P.; Goertz, Christine; Sportelli, Louis; Hamm, Anthony W.; Johnson, Claire

    2015-01-01

    The McAndrews Leadership Lecture was developed by the American Chiropractic Association to honor the legacy of Jerome F. McAndrews, DC, and George P. McAndrews, JD, and their contributions to the chiropractic profession. This article is a transcription of the presentation made by Dr Scott Haldeman on February 28, 2015, in Washington, DC, at the National Chiropractic Leadership Conference. PMID:26770177

  4. Hurricane Andrew's impact on natural gas and oil facilities on the outer continental shelf (interim report as of November 1993)

    SciTech Connect

    Daniels, G.R.

    1994-01-01

    The interim report reviews Hurricane Andrew's impact on Federal Outer Continental Shelf (OCS) natural gas and oil drilling and production facilities. The report provides background on Hurricane Andrew's progression, discusses how OCS operators responded to the storm, summarizes the types of damage to offshore facilies caused by Hurricane Andrew, and discusses Minerals Management Service's continuing damage assessment and repair efforts. The summaries of damage estimates are presented in tables in Appendix 1. A glossary of report terminology is provided in Appendix 2.

  5. Entanglement generation and entanglement concentration of two-photon four-dimensional spatial modes partially entangled Dicke state

    NASA Astrophysics Data System (ADS)

    Shi, Jin

    2017-05-01

    Two-photon four-dimensional spatial modes partially entangled Dicke state can be compactly generated from six concurrent spontaneous parametric down-conversion processes by cascading poling domain structures in 5% MgO-doped poled lithium niobate bulk crystal. Entanglement concentration of the two-photon four-dimensional spatial modes partially entangled Dicke state can be realized by using quantum nondestructive detection of nonlinear Kerr medium, optical beam splitter, and quantum gate operation.

  6. Preliminary report: medical examiner reports of deaths associated with Hurricane Andrew--Florida, August 1992.

    PubMed

    1992-09-04

    On August 24, 1992, at 1:40 a.m. eastern daylight time (EDT), rain bands associated with Hurricane Andrew reached the eastern coast of Florida. At 4:45 a.m. EDT, Hurricane Andrew made landfall 35 miles southeast of Miami at Homestead, with sustained winds of 145 miles per hour (mph) and gusts of 164 mph. These winds extended 45 miles outward of the storm center. The storm moved across the state at 18 mph toward the Gulf of Mexico (Figure 1). The tidal surge on the eastern coast was estimated at 7-19 feet. During the storm, approximately 2.5 million Florida residents were left without electrical power, and approximately 56,000 family dwelling units were destroyed or severely damaged. This report presents preliminary data from Florida medical examiner (ME) offices about deaths attributed to Hurricane Andrew.

  7. Observation of Dicke superradiance for two artificial atoms in a cavity with high decay rate.

    PubMed

    Mlynek, J A; Abdumalikov, A A; Eichler, C; Wallraff, A

    2014-11-04

    An individual excited two-level system decays to its ground state in a process known as spontaneous emission. The probability of detecting the emitted photon decreases exponentially with the time passed since its excitation. In 1954, Dicke first considered the more subtle situation in which two emitters decay in close proximity to each other. He argued that the emission dynamics of a single two-level system is altered by the presence of a second one, even if it is in its ground state. Here, we present a close to ideal realization of Dicke's original two-spin Gedankenexperiment, using a system of two individually controllable superconducting qubits weakly coupled to a fast decaying microwave cavity. The two-emitter case of superradiance is explicitly demonstrated both in time-resolved measurements of the emitted power and by fully reconstructing the density matrix of the emitted field in the photon number basis.

  8. Delocalized single-photon Dicke states and the Leggett-Garg inequality in solid state systems

    PubMed Central

    Chen, Guang-Yin; Lambert, Neill; Li, Che-Ming; Chen, Yueh-Nan; Nori, Franco

    2012-01-01

    We show how to realize a single-photon Dicke state in a large one-dimensional array of two-level systems, and discuss how to test its quantum properties. The realization of single-photon Dicke states relies on the cooperative nature of the interaction between a field reservoir and an array of two-level-emitters. The resulting dynamics of the delocalized state can display Rabi-like oscillations when the number of two-level emitters exceeds several hundred. In this case, the large array of emitters is essentially behaving like a “mirror-less cavity”. We outline how this might be realized using a multiple-quantum-well structure or a dc-SQUID array coupled to a transmission line, and discuss how the quantum nature of these oscillations could be tested with an extension of the Leggett-Garg inequality. PMID:23162693

  9. Production of an X-band horn after a design of Dick Turrin, W2IMU

    NASA Astrophysics Data System (ADS)

    Monstein, Christian

    2015-08-01

    While looking for a nice, easy to perform and cheap students' project in 2009, we investigated X-band (8 to 12 GHz) microwave devices. A 5 m parabolic dish antenna and an X-band down-converter were already available, but we had no antenna feed in our tool box. A web search yielded a simple feed horn design and found sketches and descriptions by Dick Turrin (W2IMU) from 1991.

  10. Five dimensional minimally interacting holographic dark energy model in Brans-Dicke theory of gravitation

    NASA Astrophysics Data System (ADS)

    Reddy, D. R. K.; Anitha, S.; Umadevi, S.

    2016-11-01

    In this paper, we investigate five dimensional space-time filled with minimally interacting dark matter and holographic dark energy in Brans-Dicke (Phys. Rev. 124:925, 1961) scalar-tensor theory of gravitation. The exact solutions of the field equations are obtained using (i) special law of variation for Hubble's parameter that yields constant value of deceleration parameter and (ii) a relation between metric potentials. The physical and geometrical aspects of the model are also discussed.

  11. Exact solutions to Brans-Dicke cosmologies in flat Friedmann universes.

    NASA Technical Reports Server (NTRS)

    Morganstern, R. E.

    1971-01-01

    The Brans-Dicke cosmological equations for flat Friedmann-type expanding universes are solved parametrically for time, density, expansion parameter, and scalar field. These results reduce to a previously obtained exact solution to the radiation cosmology. Although the scalar field may be undetectable at the present epoch, it is felt that, if it exists, it must play an important role as one approaches the initial singularity of the cosmology.

  12. Suppressing and Restoring the Dicke Superradiance Transition by Dephasing and Decay

    NASA Astrophysics Data System (ADS)

    Kirton, Peter; Keeling, Jonathan

    2017-03-01

    We show that dephasing of individual atoms destroys the superradiance transition of the Dicke model, but that adding individual decay toward the spin down state can restore this transition. To demonstrate this, we present a method to give an exact solution for the N atom problem with individual dephasing which scales polynomially with N . By comparing finite size scaling of our exact solution to a cumulant expansion, we confirm the destruction and restoration of the superradiance transition hold in the thermodynamic limit.

  13. Generation of Symmetric Dicke States of Remote Qubits with Linear Optics

    SciTech Connect

    Thiel, C.; Zanthier, J. von; Bastin, T.; Solano, E.; Agarwal, G. S.

    2007-11-09

    We propose a method for generating all symmetric Dicke states, either in the long-lived internal levels of N massive particles or in the polarization degrees of freedom of photonic qubits, using linear optical tools only. By means of a suitable multiphoton detection technique, erasing Welcher-Weg information, our proposed scheme allows the generation and measurement of an important class of entangled multiqubit states.

  14. Analyzing after-action reports from Hurricanes Andrew and Katrina: repeated, modified, and newly created recommendations.

    PubMed

    Knox, Claire Connolly

    2013-01-01

    Thirteen years after Hurricane Andrew struck Homestead, FL, Hurricane Katrina devastated the Gulf Coast of Mississippi, Alabama, and southeastern Louisiana. Along with all its destruction, the term "catastrophic" was redefined. This article extends the literature on these hurricanes by providing a macrolevel analysis of The Governor's Disaster Planning and Response Review Committee Final Report from Hurricane Andrew and three federal after-action reports from Hurricane Katrina, as well as a cursory review of relevant literature. Results provide evidence that previous lessons have not been learned or institutionalized with many recommendations being repeated or modified. This article concludes with a discussion of these lessons, as well as new issues arising during Hurricane Katrina.

  15. Capacities of template-type platforms in the Gulf of Mexico during hurricane Andrew

    SciTech Connect

    Bea, R.G.; Loch, K.J.; Young, P.L.

    1997-02-01

    This paper details results from nonlinear analyses of the ultimate limit state performance characteristics of four Gulf of Mexico (GOM) platforms subjected to intense loadings from hurricane Andrew. These four platforms were located to the east of the track of hurricane Andrew, and were thus in the most intense portion of the storm (Smith, 1993). The nonlinear analyses are able to replicate details of the observed behavior of the four structures. This replication is very dependent on realistic characterization of the performance characteristics of the pile foundations and on accurate information on the as is condition of the platforms before the storm.

  16. Andrew's bridge system: an aesthetic and functional option for rehabilitation of compromised maxillary anterior dentition

    PubMed Central

    Tambe, Abhijit; Patil, Sanjayagouda B; Bhat, Sudhakara; Badadare, Mokshada M

    2014-01-01

    Summary A patient with several missing teeth in the anterior aesthetic region along with severe ridge defect poses a greater challenge for prosthodontic rehabilitation. In such cases treatment using fixed partial denture (FPD) may not be feasible because of the extent of edentulous span and the periodontal conditions of the abutment teeth. To present a case of multiple missing maxillary anterior teeth with class III ridge defect rehabilitated using FPD-removable partial denture. A 38-year-old female patient was successfully rehabilitated using Andrew's bridge system in the maxillary anterior region. The fixed-removable Andrew's bridge system provides a good prognosis if diagnosed and planned meticulously. PMID:25035444

  17. Relationship of DUI recidivism to moral reasoning, sensation seeking, and MacAndrew alcoholism scores.

    PubMed

    Little, G L; Robinson, K D

    1989-12-01

    115 convicted male DUI offenders were treated with Moral Reconation Therapy during their incarceration. Postrelease recidivism status (arrests) was correlated with the pretest, posttest, and change scores on the MacAndrew Alcoholism Scale, Sensation Seeking Scale, Life-purpose scores, and Moral Reasoning scores. Analysis showed that recidivism correlated positively and significantly with the pretest scores on the MacAndrew scale and approached significance with both pre- and posttest scores on the Sensation Seeking Scale. Recidivism status correlated negatively and significantly with scores on the highest levels of moral reasoning (Scale 6 pretest and posttest and Principled Reasoning pretest).

  18. Brans-Dicke Theory with Λ>0: Black Holes and Large Scale Structures.

    PubMed

    Bhattacharya, Sourav; Dialektopoulos, Konstantinos F; Romano, Antonio Enea; Tomaras, Theodore N

    2015-10-30

    A step-by-step approach is followed to study cosmic structures in the context of Brans-Dicke theory with positive cosmological constant Λ and parameter ω. First, it is shown that regular stationary black-hole solutions not only have constant Brans-Dicke field ϕ, but can exist only for ω=∞, which forces the theory to coincide with the general relativity. Generalizations of the theory in order to evade this black-hole no-hair theorem are presented. It is also shown that in the absence of a stationary cosmological event horizon in the asymptotic region, a stationary black-hole horizon can support a nontrivial Brans-Dicke hair. Even more importantly, it is shown next that the presence of a stationary cosmological event horizon rules out any regular stationary solution, appropriate for the description of a star. Thus, to describe a star one has to assume that there is no such stationary horizon in the faraway asymptotic region. Under this implicit assumption generic spherical cosmic structures are studied perturbatively and it is shown that only for ω>0 or ω≲-5 their predicted maximum sizes are consistent with observations. We also point out how, many of the conclusions of this work differ qualitatively from the Λ=0 spacetimes.

  19. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point at...

  20. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point at...

  1. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point at...

  2. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point at...

  3. 33 CFR 334.760 - Naval Support Activity Panama City and Alligator Bayou, a tributary of St. Andrew Bay, Fla...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... City and Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. 334.760 Section... Alligator Bayou, a tributary of St. Andrew Bay, Fla.; naval restricted area. (a) The area. The waters within... the south side of the entrance to Alligator Bayou; thence directly across the entrance to a point at...

  4. Research publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon: 1948 to 1986.

    Treesearch

    A. McKee; G.M. Stonedahl; J.F. Franklin; F.J. Swanson

    1987-01-01

    A list of publications resulting from research at th H.J. Andrews Experimental Forest, Willamette National Forest, Oregon, from 1948 to 1986 is presented. Nearly 600 publications are listed, including papers, theses, and abstracts. An index is provided that cross-references the listings under appropriate keywords.

  5. Commentary on Andrew Coulson's "Comparing Public, Private, and Market Schools: The International Evidence"

    ERIC Educational Resources Information Center

    Wolfram, Gary; Coulson, Andrew J.

    2009-01-01

    In this article, the authors comment on Andrew Coulson's "Comparing Public, Private, and Market Schools: The International Evidence." The authors believe that Coulson's paper is a very interesting review of the literature on the ability of market-produced education to outperform government-produced education. Coulson's response on this commentary…

  6. Amos Kendall's Role in the Election of Andrew Jackson as President of the United States, 1828.

    ERIC Educational Resources Information Center

    Nowell, Bob

    Amos Kendall's place in journalism history rests largely on his service as a journalist turned government official in the two administrations of President Andrew Jackson. Historians have claimed that Kendall was an influential journalist of the "partisan press" era, but they have provided little documentation. That documentation has been…

  7. Airborne Videography and GPS for Assessment of Forest Damage in Southern Louisiana from Hurricane Andrew

    Treesearch

    D.M. Jacobs; Susan Eggen-McIntosh

    1993-01-01

    Abstract: One week after Hurricane Andrew made landfall in Louisiana in August 1992, an airborne videography system, with a global positioning system (GPS) receiver, was used to assess timberland damage across a 1.7 million-ha (4.2 million-acre) study area. Ground observations were made to identify different intensities of timber damage and then...

  8. Amos Kendall's Role in the Election of Andrew Jackson as President of the United States, 1828.

    ERIC Educational Resources Information Center

    Nowell, Bob

    Amos Kendall's place in journalism history rests largely on his service as a journalist turned government official in the two administrations of President Andrew Jackson. Historians have claimed that Kendall was an influential journalist of the "partisan press" era, but they have provided little documentation. That documentation has been…

  9. 31. View looking north from Andrew McLean Company Textile Mill; ...

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

    31. View looking north from Andrew McLean Company Textile Mill; Dundee Canal at center, Botany Worsted Mills in background - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  10. 56. Aerial view looking west; Andrew McLean Company Textile Mill ...

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

    56. Aerial view looking west; Andrew McLean Company Textile Mill at bottom, Dundee Canal at center, Botany Worsted Mills at top - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  11. 19. View of Andrew McLean Company Textile Mill looking south; ...

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

    19. View of Andrew McLean Company Textile Mill looking south; Building No. 2 at center, Botany Mills Lanolin Retrieval plant site in foreground - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  12. 17. View looking north; Andrew McLean Company Textile Mill, Building ...

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

    17. View looking north; Andrew McLean Company Textile Mill, Building No. 1, at right, Botany Worsted Mills at left distance - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  13. 30. View looking north from Andrew McLean Company Textile Mill; ...

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

    30. View looking north from Andrew McLean Company Textile Mill; Dundee Canal at center, Botany Worsted Mills in background - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  14. Long-term experiments on log decomposition at the H.J. Andrews Experimental Forest.

    Treesearch

    M.E. Harmon

    1992-01-01

    A long-term decomposition experiment was established at the H.J. Andrews Experimental Forest, Oregon, during 1985to test the importance of substrate heterogeneity, colonization patterns, and invertebrates on the decomposition of logs. The duration of the study is anticipated to be 200 years. A total of 530 logs (50 centimeters in diameter and 5.5 meters long) were...

  15. Because Everyone Has a Story to Tell: Interview with Andrew Wright

    ERIC Educational Resources Information Center

    Floris, Flora Debora

    2016-01-01

    This article presents an interview with Andrew Wright, a widely recognized author, illustrator, storyteller, and teacher trainer. Wright has published many ELT books, authored six "Spellbinder" graded readers (1992-1994), and a collection of short stories. As a teacher trainer, Wright worked extensively with both teachers and students in…

  16. Building a "cyber forest" in complex terrain at the Andrews Experimental Forest

    Treesearch

    Donald L. Henshaw; Fred Bierlmaier; Barbara J. Bond; Kari B. O' Connell

    2008-01-01

    Our vision for a future "cyber forest" at the Andrews Experimental Forest foresees high performance wireless communications enhancing connectivity among remote field research locations, station headquarters, and beyond to the university and outside world. New sensor technologies and collaboration tools foretell exponential increases in data and information...

  17. 75 FR 41895 - Whirlpool Corporation, Evansville Division, Including On-Site Leased Workers From Andrews...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-19

    ... Workers From Andrews International, Inc., M.H. Equipment, and Kenco Logistics Services, LLC, Evansville... that workers leased from MH Equipment and Kenco Logistics Services, LLC, were employed on-site at the... from MH Equipment and Kenco Logistics Services, LLC working on-site at the Evansville, Indiana location...

  18. 77 FR 2968 - Pomperaug Hydro Project, Andrew Peklo III; Notice Establishing Deadline for Comments and Reply...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Pomperaug Hydro Project, Andrew Peklo III; Notice Establishing Deadline for Comments and Reply Comments On December 15, 2011, the Commission issued notice that Office of Energy Projects staff will hold a site visit and...

  19. Research publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon: 1988 supplement.

    Treesearch

    T. Blinn; F.J. Swanson; A. McKee

    1988-01-01

    This bibliography updates the list of publications, abstracts, theses, and unpublished reports included in "Research Publications of the H.J. Andrews Experimental Forest, Cascade Range, Oregon, 1948 to 1986," General Technical Report PNW-GTR-201. Citations are referenced under appropriate keywords.

  20. Astronaut Andrew M. Allen, mission commander, sets up systems for a television downlink on the

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 ONBOARD VIEW --- Astronaut Andrew M. Allen, mission commander, sets up systems for a television downlink on the flight deck of the Space Shuttle Columbia. Allen was joined by four other astronauts and an international payload specialist for more than 16 days of research aboard Columbia. The photograph was taken with a 70mm handheld camera.

  1. Astronauts Mario Runco, Jr. and Andrew S. W. Thomas, both mission specialists, pose for photo while

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-77 ESC VIEW --- Astronauts Mario Runco, Jr. and Andrew S. W. Thomas, both mission specialists, pose for photo while in the mid-deck of the Earth-orbiting Space Shuttle Endeavour. The scene was recorded with an Electronic Still Camera (ESC).

  2. Crisis Intervention with Survivors of Natural Disaster: Lessons from Hurricane Andrew.

    ERIC Educational Resources Information Center

    Shelby, Janine S.; Tredinnick, Michael G.

    1995-01-01

    Crisis intervention has typically been conceptualized as seeking a return of clients to a state of equilibrium. Personal work experience with Hurricane Andrew survivors has led to an appreciation of the importance of several considerations. Develops a proactive approach, attempting to recognize and extend clients' preexisting strengths. Offers…

  3. Traversing the Gap: Andrew Wright, John Hick and Critical Religious Education

    ERIC Educational Resources Information Center

    Teece, Geoff

    2005-01-01

    This paper discusses aspects of Andrew Wright's version of a liberal, critical religious education and his criticisms of some other views of modern religious education. This is attempted not by examining these "other views" as such but by concentrating on the work of John Hick. The reason for this is that Wright, like Cooling (in his…

  4. Because Everyone Has a Story to Tell: Interview with Andrew Wright

    ERIC Educational Resources Information Center

    Floris, Flora Debora

    2016-01-01

    This article presents an interview with Andrew Wright, a widely recognized author, illustrator, storyteller, and teacher trainer. Wright has published many ELT books, authored six "Spellbinder" graded readers (1992-1994), and a collection of short stories. As a teacher trainer, Wright worked extensively with both teachers and students in…

  5. Astronaut Andrew M. Allen, mission commander, sets up systems for a television downlink on the

    NASA Technical Reports Server (NTRS)

    1996-01-01

    STS-75 ONBOARD VIEW --- Astronaut Andrew M. Allen, mission commander, sets up systems for a television downlink on the flight deck of the Space Shuttle Columbia. Allen was joined by four other astronauts and an international payload specialist for more than 16 days of research aboard Columbia. The photograph was taken with a 70mm handheld camera.

  6. 77 FR 20621 - Pomperaug Hydro Project; Andrew Peklo III; Notice Extending Deadline for Comments

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Pomperaug Hydro Project; Andrew Peklo III; Notice Extending Deadline for... expiration of the comment period established in the Commission's January 12, 2012, notice, the deadline for...

  7. Traversing the Gap: Andrew Wright, John Hick and Critical Religious Education

    ERIC Educational Resources Information Center

    Teece, Geoff

    2005-01-01

    This paper discusses aspects of Andrew Wright's version of a liberal, critical religious education and his criticisms of some other views of modern religious education. This is attempted not by examining these "other views" as such but by concentrating on the work of John Hick. The reason for this is that Wright, like Cooling (in his…

  8. 22. View of Andrew McLean Company Textile Mill looking north; ...

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

    22. View of Andrew McLean Company Textile Mill looking north; Building No. 1 at left, Building No. 4 at right - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  9. 15. View of Andrew McLean Company Textile Mill looking northeast; ...

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

    15. View of Andrew McLean Company Textile Mill looking northeast; Building No. 1 at left, Building No. 6 at center - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  10. 14. View of Andrew McLean Company Textile Mill looking north; ...

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

    14. View of Andrew McLean Company Textile Mill looking north; Building No. 6 at right, Building No. 1 in background, gateposts in foreground - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  11. 20. View of Andrew McLean Company Textile Mill looking southeast; ...

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

    20. View of Andrew McLean Company Textile Mill looking southeast; Building No. 2 at left, Building No. 3 at right - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  12. 23. View of open firststory passageway of Andrew McLean Company ...

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

    23. View of open first-story passageway of Andrew McLean Company Textile Mill Building No. 1, looking west - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  13. 16. View of Andrew McLean Company Textile Mill looking southeast; ...

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

    16. View of Andrew McLean Company Textile Mill looking southeast; Building No. 6 at center, roof of Building No. 1 at left - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  14. 18. View of Andrew McLean Company Textile Mill looking north; ...

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

    18. View of Andrew McLean Company Textile Mill looking north; Building No. 3 at center right, Building No. 2 at center distance, Dundee Canal at left - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  15. News of Hurricane Andrew: The Agenda of Sources and the Sources' Agendas.

    ERIC Educational Resources Information Center

    Salwen, Michael B.

    1995-01-01

    Studies quotations in newspaper coverage of Hurricane Andrew, showing that individuals who were not affiliated with government or business were quoted most often. Shows that most sources were quoted as experts, with individuals represented as suffering victims, providing the news media with human interest quotations. Notes that most sources…

  16. Stressing Memory: Long-Term Relations among Children's Stress, Recall and Psychological Outcome following Hurricane Andrew

    ERIC Educational Resources Information Center

    Sales, Jessica McDermott; Fivush, Robyn; Parker, Janat; Bahrick, Lorraine

    2005-01-01

    We examined relations among stress, children's recall, and psychological functioning following Hurricane Andrew. Thirty-five children from mixed socioeconomic backgrounds were divided into low-, moderate-, and high-stress groups and were interviewed about the hurricane immediately after the storm and 6 years later. Our primary interest, stemming…

  17. Crisis Intervention with Survivors of Natural Disaster: Lessons from Hurricane Andrew.

    ERIC Educational Resources Information Center

    Shelby, Janine S.; Tredinnick, Michael G.

    1995-01-01

    Crisis intervention has typically been conceptualized as seeking a return of clients to a state of equilibrium. Personal work experience with Hurricane Andrew survivors has led to an appreciation of the importance of several considerations. Develops a proactive approach, attempting to recognize and extend clients' preexisting strengths. Offers…

  18. Posttraumatic Stress, Depression, and Social Support among College Students after Hurricane Andrew.

    ERIC Educational Resources Information Center

    Pickens, Jeffrey; And Others

    1995-01-01

    One month after Hurricane Andrew, surveyed students who reported experiencing the most severe impact damage from the storm also reported experiencing the most stress, anxiety, and depressive symptoms. Regression analyses revealed that material and emotional social support were significant predictors of anxiety and depression scores after the…

  19. Integrability and superintegrability of the generalized n-level many-mode Jaynes-Cummings and Dicke models

    SciTech Connect

    Skrypnyk, T.

    2009-10-15

    We analyze symmetries of the integrable generalizations of Jaynes-Cummings and Dicke models associated with simple Lie algebras g and their reductive subalgebras g{sub K}[T. Skrypnyk, 'Generalized n-level Jaynes-Cummings and Dicke models, classical rational r-matrices and nested Bethe ansatz', J. Phys. A: Math. Theor. 41, 475202 (2008)]. We show that their symmetry algebras contain commutative subalgebras isomorphic to the Cartan subalgebras of g, which can be added to the commutative algebras of quantum integrals generated with the help of the quantum Lax operators. We diagonalize additional commuting integrals and constructed with their help the most general integrable quantum Hamiltonian of the generalized n-level many-mode Jaynes-Cummings and Dicke-type models using nested algebraic Bethe ansatz.

  20. Attractors, statefinders and observational measurement for chameleonic Brans-Dicke cosmology

    SciTech Connect

    Farajollahi, Hossein; Salehi, Amin E-mail: a.salehi@guilan.ac.ir

    2010-11-01

    We investigate chameleonic Brans-Dicke model applied to the FRW universes. A framework to study stability and attractor solutions in the phase space is developed for the model. We show that depending on the matter field and stability conditions, it is possible to realize phantom-like behavior without introducing phantom filed in the model while the stability is fulfilled and phantom crossing occurs. The statefinder parameters to the model for different kinds of matter interacting with the chameleon scalar field are studied. We also compare our model with present day observations.

  1. Five dimensional spherically symmetric minimally interacting holographic dark energy model in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Reddy, D. R. K.; Raju, P.; Sobhanbabu, K.

    2016-04-01

    Five dimensional spherically symmetric space-time filled with two minimally interacting fields; matter and holographic dark energy components is investigated in a scalar tensor theory of gravitation proposed by Brans and Dicke (Phys. Rev. 124:925, 1961). To obtain a determinate solution of the highly non-linear field equations we have used (i) a relation between metric potentials and (ii) an equation of state which represents disordered radiation in five dimensional universe. The solution obtained represents a minimally interacting and radiating holographic dark energy model in five dimensional universe. Some physical and Kinematical properties of the model are, also, studied.

  2. Inflationary phase in Brans-Dicke cosmology with a cosmological constant

    NASA Astrophysics Data System (ADS)

    Berman, Marcelo Samuel

    1989-12-01

    It has been shown earlier that, for a perfect fluid, a perfect gas law of state, and the Robertson-Walker metric, an exponential phase in Brans-Dicke cosmology is possible, with both positive pressure and density, but not with the violated energy condition p = -ρ. We demonstrate in this paper that the inclusion of a cosmological constant into the theory does not change that picture. Permanent address: Departamento de Ciencias Exatas da Faculdade de Filosofia, Ceincias e Letras da FURJ, Joinville, SC 89200, Brazil.

  3. Phase correlation of ensemble of quantum emitters and timed Dicke state

    NASA Astrophysics Data System (ADS)

    Yoon, Jae Seok; Hong, Suc-Kyoung; Nam, Seog Woo; Yang, Hyung Jin

    2016-06-01

    We study the phase-correlated state which is introduced by the instantaneous excitation of an ensemble of identical two-level quantum emitters and its relation with the Dicke states. Under weak coupling regime, the time evolution of the phase-correlated system of the emitters is also derived to see the characteristics of the collective spontaneous emission of the emitters. It is found that the effective coupling of the ensemble in the phase-correlated state with the emitted field is directly determined by the collective phase of the system. Hence, the collective phase is considered for several specified distributions in brief.

  4. Comment on "Exploring chaos in the Dicke model using ground-state fidelity and Loschmidt echo"

    NASA Astrophysics Data System (ADS)

    García-Mata, Ignacio; Roncaglia, Augusto J.; Wisniacki, Diego A.

    2015-03-01

    In a recent paper [Phys. Rev. E 90, 022920 (2014), 10.1103/PhysRevE.90.022920] a study of the ground-state fidelity of the Dicke model as a function of the coupling parameter is presented. Abrupt jumps of the fidelity in the superradiant phase are observed and are assumed to be related to the transition to chaos. We show that this conclusion results from a misinterpretation of the numerics. In fact, if the parity symmetry is taken into account, the unexpected jumps disappear.

  5. Instability analysis of a cylindrical stellar object in Brans–Dicke gravity

    SciTech Connect

    Sharif, M.; Manzoor, R.

    2016-05-15

    This paper investigates instability ranges of a cylindrically symmetric collapsing cosmic filamentary structure in the Brans–Dicke theory of gravity. For this purpose, we use a perturbating approach to the modified field equations as well as dynamic equations and construct a collapse equation. The collapse equation with an adiabatic index (Γ) is used to explore the instability ranges of both isotropic and anisotropic fluid in Newtonian and post-Newtonian approximations. It turns out that the instability ranges depend on the dynamic variables of collapsing filaments. We conclude that the system always remains unstable for 0 < Γ < 1, while Γ > 1 provides instability only in a special case.

  6. Dick Mol. 'Sir Mammoth' leads charge to uncover Ice Age fossils.

    PubMed

    Stone, R

    2000-12-15

    Dick Mol may be an amateur, but he's had more success than most professionals in his chosen field of paleontology. As scientific coordinator of a major expedition that's gathering the remains of woolly mammoths and other Pleistocene fauna from Siberia's Taimyr Peninsula, this 45-year-old customs officer at Amsterdam airport has been featured in a documentary on the Discovery Channel and in a sequel to appear next March. The work has brought him international recognition for his studies on quaternary paleontology, the study of the Pleistocene and today's Holocene Epochs.

  7. Willem Dicke. Brilliant Clinical Observer and Translational Investigator. Discoverer of the Toxic Cause of Celiac Disease

    PubMed Central

    Yan, David; Holt, Peter R.

    2009-01-01

    Abstract We can admire and learn from physicians with acute clinical acumen and superb approaches to translational research. The observations and studies of Dr. Willem Dicke, a Dutch pediatrician, on the toxic effects of a protein component of wheat and rye demonstrate the highest quality of such investigations. From a clinical observation of one child with celiac disease, through years of historical questioning and empirical dietary suggestions of patient families, he concluded that such foods were toxic. When research became possible after the second world war and fecal fat measures as a hard end point became available he studied 5 children in detail to establish the validity of his clinical clues. PMID:20443939

  8. Entropy, chaos, and excited-state quantum phase transitions in the Dicke model.

    PubMed

    Lóbez, C M; Relaño, A

    2016-07-01

    We study nonequilibrium processes in an isolated quantum system-the Dicke model-focusing on the role played by the transition from integrability to chaos and the presence of excited-state quantum phase transitions. We show that both diagonal and entanglement entropies are abruptly increased by the onset of chaos. Also, this increase ends in both cases just after the system crosses the critical energy of the excited-state quantum phase transition. The link between entropy production, the development of chaos, and the excited-state quantum phase transition is more clear for the entanglement entropy.

  9. Drude weight, cyclotron resonance, and the Dicke model of graphene cavity QED.

    PubMed

    Chirolli, Luca; Polini, Marco; Giovannetti, Vittorio; MacDonald, Allan H

    2012-12-28

    The unique optoelectronic properties of graphene make this two-dimensional material an ideal platform for fundamental studies of cavity quantum electrodynamics in the strong-coupling regime. The celebrated Dicke model of cavity quantum electrodynamics can be approximately realized in this material when the cyclotron transition of its 2D massless Dirac fermion carriers is nearly resonant with a cavity photon mode. We develop the theory of strong matter-photon coupling in this circumstance, emphasizing the essential role of a dynamically generated matter energy term that is quadratic in the photon field and absent in graphene's low-energy Dirac model.

  10. Holographic dark energy models with interactions and entropy corrections for different cutoffs in the Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Darabi, F.; Felegary, F.

    2017-05-01

    In the Brans-Dicke cosmology framework, we study holographic dark energy models with interaction and with power-law and logarithmic entropy corrections for different cutoffs. We consider conditions on the Brans-Dicke parameter compared with the conditions for the acceleration and phantom phases to show which entropy-corrected models can have acceleration and a phantom phase in the early Universe and at the present. Moreover, we determine which of the considered models are classically stable and which are unstable in early times and at the present.

  11. A scheme for detecting the atom-field coupling constant in the Dicke superradiation regime using hybrid cavity optomechanical system.

    PubMed

    Wang, Yueming; Liu, Bin; Lian, Jinling; Liang, Jiuqing

    2012-04-23

    We proposed a scheme for detecting the atom-field coupling constant in the Dicke superradiation regime based on a hybrid cavity optomechanical system assisted by an atomic gas. The critical behavior of the Dicke model was obtained analytically using the spin-coherent-state representation. Without regard to the dynamics of cavity field an analytical formula of one-to-one correspondence between movable mirror's steady position and atom-field coupling constant for a given number of atoms is obtained. Thus the atom-field coupling constant can be probed by measuring the movable mirror's steady position, which is another effect of the cavity optomechanics. © 2012 Optical Society of America

  12. Deterministic distribution of four-photon Dicke state over an arbitrary collective-noise channel with cross-Kerr nonlinearity

    PubMed Central

    Wang, Mei-Yu; Yan, Feng-Li; Gao, Ting

    2016-01-01

    We present two deterministic quantum entanglement distribution protocols for a four-photon Dicke polarization entangled state resorting to the frequency and spatial degrees of freedom, which are immune to an arbitrary collective-noise channel. Both of the protocols adopt the X homodyne measurement based on the cross-Kerr nonlinearity to complete the task of the single-photon detection with nearly unit probability in principle. After the four receivers share the photons, they add some local unitary operations to obtain a standard four-photon Dicke polarization entangled state. PMID:27412489

  13. Deterministic distribution of four-photon Dicke state over an arbitrary collective-noise channel with cross-Kerr nonlinearity.

    PubMed

    Wang, Mei-Yu; Yan, Feng-Li; Gao, Ting

    2016-07-14

    We present two deterministic quantum entanglement distribution protocols for a four-photon Dicke polarization entangled state resorting to the frequency and spatial degrees of freedom, which are immune to an arbitrary collective-noise channel. Both of the protocols adopt the X homodyne measurement based on the cross-Kerr nonlinearity to complete the task of the single-photon detection with nearly unit probability in principle. After the four receivers share the photons, they add some local unitary operations to obtain a standard four-photon Dicke polarization entangled state.

  14. Deterministic distribution of four-photon Dicke state over an arbitrary collective-noise channel with cross-Kerr nonlinearity

    NASA Astrophysics Data System (ADS)

    Wang, Mei-Yu; Yan, Feng-Li; Gao, Ting

    2016-07-01

    We present two deterministic quantum entanglement distribution protocols for a four-photon Dicke polarization entangled state resorting to the frequency and spatial degrees of freedom, which are immune to an arbitrary collective-noise channel. Both of the protocols adopt the X homodyne measurement based on the cross-Kerr nonlinearity to complete the task of the single-photon detection with nearly unit probability in principle. After the four receivers share the photons, they add some local unitary operations to obtain a standard four-photon Dicke polarization entangled state.

  15. Behaviour of Brans-Dicke parameter in generalised chameleon cosmology with Kantowski-Sachs space-time

    NASA Astrophysics Data System (ADS)

    Satish, J.; Venkateswarlu, R.

    2014-12-01

    In this paper we consider chameleonic generalized Brans-Dicke cosmology in the framework of Kantwoski-Sacks universes. We investigate the time dependence of the Brans-Dicke parameter ω( t) for an expanding Universe, and obtain an explicit dependence of ω( t) in different expansion phases of the Universe. Here we take the power law form of the scale factor. The behaviour of ω( t) is studied for matter-dominated, vacuum-energy-dominated universe, radiation-dominated and mass-less scalar-field-dominated era. It is also proposed to study the nature of the deceleration parameter.

  16. Impact of an extreme event on the sediment budget: Hurricane Andrew in the Louisiana barrier islands

    USGS Publications Warehouse

    List, Jeffrey H.; Hansen, Mark E.; Sallenger,, Asbury H.; Jaffe, Bruce E.; Edge, B.L

    1997-01-01

    This paper examines the influence of Hurricane Andrew on the sediment budget of an 80-kilometer section of the Louisiana barrier islands west of the modern Mississippi delta. Because long-term bathymetric change has been extensively studied in this area, excellent baseline data are available for evaluating the impact of Hurricane Andrew. Results show that despite the high intensity of the storm and a storm track optimally positioned to impact the study area, the storm did not have an overwhelming influence on the sediment budget when compared to the changes occurring over the previous 50 years. For the Louisiana barrier islands, a 50-year record appears to be adequate for averaging the long-term contributions of both major and minor storm events to the sediment budget.

  17. Geologic impact of Hurricane Andrew on Everglades coast of southwest Florida

    NASA Astrophysics Data System (ADS)

    Davis, R. A.

    1995-04-01

    Hurricane Andrew, one of the strongest storms of the century, crossed the southern part of the Florida peninsula on 24 August 1992. Its path crossed the Florida Everglades and exited in the national park across a mangrove-dominated coast onto the shallow, low-energy, inner shelf. The storm caused extensive breakage and defoliation in the mangrove community; full recovery will take decades. It produced no extensive sedimentation unit; only local and ephemeral ebb-surge deposits. The discontinuous shelly storm beach ridge was breached at multiple locations, and it moved landward a few meters. After seven months, there was little geologic indication that the storm had passed. It is likely that the stratigraphic record in this area will not contain any recognizable features of the passage of Hurricane Andrew.

  18. Environmental Assessment of the Privatization of Military Family Housing at Andrews Air Force Base, Maryland

    DTIC Science & Technology

    2007-05-01

    congressional legislation. b. Ensures that eligible military members and their families have access to quality, attractive , and affordable housing...average annual temperature at Andrews AFB is 56 degrees Fahrenheit (ºF), the mean annual precipitation is 42.5 inches, the mean average snowfall is...surface water turbidity, which can raise water temperature and impede photosynthetic processes. Sediment runoff into surface water bodies also

  19. Environmental Assessment for the Upgrade of the Andrews Air Force Base Airfield Security System

    DTIC Science & Technology

    2004-11-01

    County, Maryland. Andrews AFB is home to the 89th Airlift Wing, which provides worldwide airlift and logistical support for the President of the...United States, the Vice President, cabinet members’, and other high-ranking United States and foreign officials and dignitaries; the base supports the...flightline and can be used to access both the flightline and airfield; surveillance of the airfield and perimeter areas is sometimes encumbered by

  20. 21. View of Andrew McLean Company Textile Mill looking west; ...

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

    21. View of Andrew McLean Company Textile Mill looking west; Building No. 4 at left, Building No. 1 at left center, Building No. 3 at center, Building No. 2 at right center, Building No. 5 at right - Dundee Canal Industrial Historic District, Beginning at George Street in Passaic & extending north along Dundee Canal approximately 1.2 miles to Canal headgates opposite East Clifton Avenue in Clifton, Passaic, Passaic County, NJ

  1. General Plan Environmental Assessment for Joint Base Andrews-Naval Air Facility, Washington, Maryland

    DTIC Science & Technology

    2011-04-01

    and were developed for seven criteria pollutants: ozone (O3), nitrogen dioxide (NO2), carbon monoxide (CO), particulate matter (PM) less than 10...3-9  Table 3-6. Baseline Emissions at Andrews, Calendar Years 2002 and 2009 ........ 3-15  Table 3-7. Air Emissions Inventory Prince...Code of Federal Regulations CIP Capital Improvements Program CO Carbon Monoxide COMBS Contractor Operated & Maintained Base Supply CWA Clean Water

  2. Environmental Assessment of Communications Support Facilities Andrews Air Force Base, Maryland

    DTIC Science & Technology

    2004-12-01

    Anacostia River on the west and the Patuxent River on the east. Land surface elevations on Andrews AFB vary from approximately 215 feet above mean sea...within three significantly diverse watersheds: the Potomac River , Anacostia River , and Patuxent River . These watersheds drain 2.3 17 square miles of...George’s County, while 132,000 acres drain to the Anacostia River (USA F 200 I). The majority of the base lies within the Potomac Ri ver Watershed

  3. Rapid health needs assessment following hurricane Andrew--Florida and Louisiana, 1992.

    PubMed

    1992-09-18

    Following the impact phase of Hurricane Andrew in Florida (August 24) and Louisiana (August 26) (Figure 1), the primary objectives of the public health response have been to address the health and medical needs of residents in the storm-damaged areas and to provide data for relief interventions and decision-making. This report presents the combined findings from rapid health needs assessment surveys conducted by state health departments with CDC assistance 3-10 days postimpact.

  4. Brans-Dicke inflation in light of the Planck 2015 data

    NASA Astrophysics Data System (ADS)

    Tahmasebzadeh, B.; Rezazadeh, K.; Karami, K.

    2016-07-01

    We study inflation in the Brans-Dicke gravity as a special model of the scalar-tensor gravity. We obtain the inflationary observables containing the scalar spectral index, the tensor-to-scalar ratio, the running of the scalar spectral index and the equilateral non-Gaussianity parameter in terms of the general form of the potential in the Jordan frame. Then, we compare the results for various inflationary potentials in light of the Planck 2015 data. Our study shows that in the Brans-Dicke gravity, the power-law, inverse power-law and exponential potentials are ruled out by the Planck 2015 data. But, the hilltop, Higgs, Coleman-Weinberg and natural potentials can be compatible with Planck 2015 TT,TE,EE+lowP data at 95% CL. Moreover, the D-brane, SB SUSY and displaced quadratic potentials can be in well agreement with the observational data since their results can lie inside the 68% CL region of Planck 2015 TT,TE,EE+lowP data.

  5. Robert Dicke and the naissance of experimental gravity physics, 1957-1967

    NASA Astrophysics Data System (ADS)

    Edwin Peebles, Phillip James

    2016-10-01

    The experimental study of gravity became much more active in the late 1950s, a change pronounced enough be termed the birth, or naissance, of experimental gravity physics. I present a review of developments in this subject since 1915, through the broad range of new approaches that commenced in the late 1950s, and up to the transition of experimental gravity physics to what might be termed a normal and accepted part of physical science in the late 1960s. This review shows the importance of advances in technology, here as in all branches of natural science. The role of contingency is illustrated by Robert Dicke's decision in the mid-1950s to change directions in mid-career, to lead a research group dedicated to the experimental study of gravity. The review also shows the power of nonempirical evidence. Some in the 1950s felt that general relativity theory is so logically sound as to be scarcely worth the testing. But Dicke and others argued that a poorly tested theory is only that, and that other nonempirical arguments, based on Mach's Principle and Dirac's Large Numbers hypothesis, suggested it would be worth looking for a better theory of gravity. I conclude by offering lessons from this history, some peculiar to the study of gravity physics during the naissance, some of more general relevance. The central lesson, which is familiar but not always well advertised, is that physical theories can be empirically established, sometimes with surprising results.

  6. Digital-analog quantum simulation of generalized Dicke models with superconducting circuits

    PubMed Central

    Lamata, Lucas

    2017-01-01

    We propose a digital-analog quantum simulation of generalized Dicke models with superconducting circuits, including Fermi- Bose condensates, biased and pulsed Dicke models, for all regimes of light-matter coupling. We encode these classes of problems in a set of superconducting qubits coupled with a bosonic mode implemented by a transmission line resonator. Via digital-analog techniques, an efficient quantum simulation can be performed in state-of-the-art circuit quantum electrodynamics platforms, by suitable decomposition into analog qubit-bosonic blocks and collective single-qubit pulses through digital steps. Moreover, just a single global analog block would be needed during the whole protocol in most of the cases, superimposed with fast periodic pulses to rotate and detune the qubits. Therefore, a large number of digital steps may be attained with this approach, providing a reduced digital error. Additionally, the number of gates per digital step does not grow with the number of qubits, rendering the simulation efficient. This strategy paves the way for the scalable digital-analog quantum simulation of many-body dynamics involving bosonic modes and spin degrees of freedom with superconducting circuits. PMID:28256559

  7. Acoustics and its relation to language: The influence of Dick Bolt

    NASA Astrophysics Data System (ADS)

    Stevens, Kenneth N.

    2003-04-01

    Under the mentoring of Dick Bolt, and the stimulation he provided in the Acoustics Laboratory at MIT, many students were exposed to a range of topics in acoustics, including mechanisms of sound generation, radiation, and propagation, noise control, acoustics of resonators and rooms, human responses to sound, and speech perception under various adverse conditions. As someone who became interested in speech communication, I have recognized that this kind of quantitative background in acoustics is an important requirement for developing models of how humans produce speech, how they perceive and understand speech, and how children acquire these skills. Speech production involves sound sources produced by a nonlinear mechanical system and by noise arising from turbulent airflow. Sound is propagated in a vocal tract with yielding walls, and acoustic coupling is introduced by lossy resonators attached to the vocal tract, including the trachea and the nasal cavity. These acoustic principles of sound generation create an inventory of sound types that give rise to distinctive responses in the ears and brains of listeners. The solid grounding in acoustics provided by Dick Bolt and his leadership have helped in the formation of this linkage between acoustics, speech physiology, linguistics, and human perception.

  8. Digital-analog quantum simulation of generalized Dicke models with superconducting circuits.

    PubMed

    Lamata, Lucas

    2017-03-03

    We propose a digital-analog quantum simulation of generalized Dicke models with superconducting circuits, including Fermi- Bose condensates, biased and pulsed Dicke models, for all regimes of light-matter coupling. We encode these classes of problems in a set of superconducting qubits coupled with a bosonic mode implemented by a transmission line resonator. Via digital-analog techniques, an efficient quantum simulation can be performed in state-of-the-art circuit quantum electrodynamics platforms, by suitable decomposition into analog qubit-bosonic blocks and collective single-qubit pulses through digital steps. Moreover, just a single global analog block would be needed during the whole protocol in most of the cases, superimposed with fast periodic pulses to rotate and detune the qubits. Therefore, a large number of digital steps may be attained with this approach, providing a reduced digital error. Additionally, the number of gates per digital step does not grow with the number of qubits, rendering the simulation efficient. This strategy paves the way for the scalable digital-analog quantum simulation of many-body dynamics involving bosonic modes and spin degrees of freedom with superconducting circuits.

  9. Digital-analog quantum simulation of generalized Dicke models with superconducting circuits

    NASA Astrophysics Data System (ADS)

    Lamata, Lucas

    2017-03-01

    We propose a digital-analog quantum simulation of generalized Dicke models with superconducting circuits, including Fermi- Bose condensates, biased and pulsed Dicke models, for all regimes of light-matter coupling. We encode these classes of problems in a set of superconducting qubits coupled with a bosonic mode implemented by a transmission line resonator. Via digital-analog techniques, an efficient quantum simulation can be performed in state-of-the-art circuit quantum electrodynamics platforms, by suitable decomposition into analog qubit-bosonic blocks and collective single-qubit pulses through digital steps. Moreover, just a single global analog block would be needed during the whole protocol in most of the cases, superimposed with fast periodic pulses to rotate and detune the qubits. Therefore, a large number of digital steps may be attained with this approach, providing a reduced digital error. Additionally, the number of gates per digital step does not grow with the number of qubits, rendering the simulation efficient. This strategy paves the way for the scalable digital-analog quantum simulation of many-body dynamics involving bosonic modes and spin degrees of freedom with superconducting circuits.

  10. Holographic dark energy in Brans-Dicke theory with logarithmic correction

    NASA Astrophysics Data System (ADS)

    Sheykhi, A.; Karami, K.; Jamil, M.; Kazemi, E.; Haddad, M.

    2012-03-01

    In the derivation of holographic dark energy density, the area law of the black hole entropy plays a crucial role. However, the entropy-area relation can be modified from the inclusion of quantum effects, motivated from the loop quantum gravity, string theory and black hole physics. In this paper, we study cosmological implication of the interacting entropy-corrected holographic dark energy model in the framework of Brans-Dicke cosmology. We obtain the equation of state and the deceleration parameters of the entropy-corrected holographic dark energy in a non-flat Universe. As system's IR cutoff we choose the radius of the event horizon measured on the sphere of the horizon, defined as L = ar( t). We find out that when the entropy-corrected holographic dark energy is combined with the Brans-Dicke field, the transition from normal state where w D > -1 to the phantom regime where w D < -1 for the equation of state of interacting dark energy can be more easily achieved for than when resort to the Einstein field equations is made.

  11. Spherically symmetric thin shells in Brans-Dicke theory of gravity

    SciTech Connect

    Letelier, P.S.; Wang, A. )

    1993-07-15

    The dynamics of spherically symmetric thin shells (or bubbles) is studied in the framework of the Brans-Dicke theory of gravity, using the Newman-Penrose formalism. The Brans-Dicke (BD) gravitational field equations on the bubble wall are given explicitly in terms of the discontinuities of the metric coefficients and the BD scalar field. Consequently, once the space-time geometry outside of the wall is given, these equations, together with the equation of state of the wall, uniquely determine the motion of the bubble. Using the generalized'' Bianchi identities, the interaction of a bubble with gravitational and matter fields is investigated. In particular, it is found that a bubble does not interact with an electromagnetic field, but it does with a scalar field or a fluid. The attraction and repulsion of a bubble are also studied. Exact solutions are constructed, and it is found that some of these solutions represent wormholes. However, these wormholes are different from the ones in Einstein's theory of gravity, in the sense that the throats of the wormholes are not necessarily built with exotic'' matter.

  12. Holographic Dark Energy in Brans-Dicke Theory with Logarithmic Form of Scalar Field

    NASA Astrophysics Data System (ADS)

    Singh, C. P.; Kumar, Pankaj

    2017-10-01

    In this paper, an interacting holographic dark energy model with Hubble horizon as an infra-red cut-off is considered in the framework of Brans-Dicke theory. We assume the Brans-Dicke scalar field as a logarithmic form ϕ = ϕ 0 l n( α + β a), where a is the scale factor, α and β are arbitrary constants, to interpret the physical phenomena of the Universe. The equation of state parameter w h and deceleration parameter q are obtained to discuss the dynamics of the evolution of the Universe. We present a unified model of holographic dark energy which explains the early time acceleration (inflation), medieval time deceleration and late time acceleration. It is also observed that w h may cross the phantom divide line in the late time evolution. We also discuss the cosmic coincidence problem. We obtain a time-varying density ratio of holographic dark energy to dark matter which is a constant of order one (r˜ O(1)) during early and late time evolution, and may evolve sufficiently slow at present time. Thus, the model successfully resolves the cosmic coincidence problem.

  13. Cosmological parameters for spatially flat dust filled Universe in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Kant Goswami, Gopi

    2017-02-01

    We have investigated late time acceleration for a spatially flat dust filled Universe in Brans-Dicke theory in the presence of a positive cosmological constant Λ. Expressions for Hubble’s constant, luminosity distance and apparent magnitude have been obtained for our model. The theoretical results are compared with observed values of the latest 287 high redshift (0.3 ≤ z ≤ 1.4) Type Ia supernova data taken from the Union 2.1 compilation to estimate present values of matter and dark energy parameters, (Ωm)0 and (ΩΛ)0. We have also estimated the present value of Hubble’s constant H 0 in light of an updated sample of Hubble parameter measurements including 19 independent data points. The results are found to be in good agreement with recent astrophysical observations. We also calculated various physical parameters such as matter and dark energy densities, present age of the Universe and deceleration parameter. The value for Brans-Dicke-coupling constant ω is set to be 40 000 based on accuracy of solar system tests and recent experimental evidence.

  14. Dicke phase transition and collapse of superradiant phase in optomechanical cavity with arbitrary number of atoms

    NASA Astrophysics Data System (ADS)

    Zhao, Xiuqin; Liu, Ni; Bai, Xuemin; Liang, J.-Q.

    2017-03-01

    We in this paper derive the analytical expressions of ground-state energy, average photon-number, and the atomic population by means of the spin-coherent-state variational method for arbitrary number of atoms in an optomechanical cavity. It is found that the existence of mechanical oscillator does not affect the phase boundary between the normal and superradiant phases. However, the superradiant phase collapses by the resonant damping of the oscillator when the atom-field coupling increases to a so-called turning point. As a consequence the system undergoes at this point an additional phase transition from the superradiant phase to a new normal phase of the atomic population-inversion state. The region of superradiant phase decreases with the increase of photon-phonon coupling. It shrinks to zero at a critical value of the coupling and a direct atomic population transfer appears between two atom-levels. Moreover we find an unstable nonzero-photon state, which is the counterpart of the superradiant state. In the absence of oscillator our result reduces exactly to that of Dicke model. Particularly the ground-state energy for N = 1 (i.e. the Rabi model) is in perfect agreement with the numerical diagonalization in a wide region of coupling constant for both red and blue detuning. The Dicke phase transition remains for the Rabi model in agreement with the recent observation.

  15. First-Order Quantum Phase Transition for Dicke Model Induced by Atom-Atom Interaction

    NASA Astrophysics Data System (ADS)

    Zhao, Xiu-Qin; Liu, Ni; Liang, Jiu-Qing

    2017-05-01

    In this article, we use the spin coherent state transformation and the ground state variational method to theoretically calculate the ground function. In order to consider the influence of the atom-atom interaction on the extended Dicke model’s ground state properties, the mean photon number, the scaled atomic population and the average ground energy are displayed. Using the self-consistent field theory to solve the atom-atom interaction, we discover the system undergoes a first-order quantum phase transition from the normal phase to the superradiant phase, but a famous Dicke-type second-order quantum phase transition without the atom-atom interaction. Meanwhile, the atom-atom interaction makes the phase transition point shift to the lower atom-photon collective coupling strength. Supported by the National Natural Science Foundation of China under Grant Nos. 11275118, 11404198, 91430109, 61505100, 51502189, and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province (STIP) under Grant No. 2014102, and the Launch of the Scientific Research of Shanxi University under Grant No. 011151801004, and the National Fundamental Fund of Personnel Training under Grant No. J1103210. The Natural Science Foundation of Shanxi Province under Grant No. 2015011008

  16. Robert Dicke and the naissance of experimental gravity physics, 1957-1967

    NASA Astrophysics Data System (ADS)

    Peebles, Phillip James Edwin

    2017-06-01

    The experimental study of gravity became much more active in the late 1950s, a change pronounced enough be termed the birth, or naissance, of experimental gravity physics. I present a review of developments in this subject since 1915, through the broad range of new approaches that commenced in the late 1950s, and up to the transition of experimental gravity physics to what might be termed a normal and accepted part of physical science in the late 1960s. This review shows the importance of advances in technology, here as in all branches of natural science. The role of contingency is illustrated by Robert Dicke's decision in the mid-1950s to change directions in mid-career, to lead a research group dedicated to the experimental study of gravity. The review also shows the power of nonempirical evidence. Some in the 1950s felt that general relativity theory is so logically sound as to be scarcely worth the testing. But Dicke and others argued that a poorly tested theory is only that, and that other nonempirical arguments, based on Mach's Principle and Dirac's Large Numbers hypothesis, suggested it would be worth looking for a better theory of gravity. I conclude by offering lessons from this history, some peculiar to the study of gravity physics during the naissance, some of more general relevance. The central lesson, which is familiar but not always well advertised, is that physical theories can be empirically established, sometimes with surprising results.

  17. Holographic Dark Energy in Brans-Dicke Theory with Logarithmic Form of Scalar Field

    NASA Astrophysics Data System (ADS)

    Singh, C. P.; Kumar, Pankaj

    2017-08-01

    In this paper, an interacting holographic dark energy model with Hubble horizon as an infra-red cut-off is considered in the framework of Brans-Dicke theory. We assume the Brans-Dicke scalar field as a logarithmic form ϕ = ϕ 0 l n(α + β a), where a is the scale factor, α and β are arbitrary constants, to interpret the physical phenomena of the Universe. The equation of state parameter w h and deceleration parameter q are obtained to discuss the dynamics of the evolution of the Universe. We present a unified model of holographic dark energy which explains the early time acceleration (inflation), medieval time deceleration and late time acceleration. It is also observed that w h may cross the phantom divide line in the late time evolution. We also discuss the cosmic coincidence problem. We obtain a time-varying density ratio of holographic dark energy to dark matter which is a constant of order one ( r˜ O(1)) during early and late time evolution, and may evolve sufficiently slow at present time. Thus, the model successfully resolves the cosmic coincidence problem.

  18. Effects of anisotropy on interacting ghost dark energy in Brans-Dicke theories

    NASA Astrophysics Data System (ADS)

    Hossienkhani, H.; Fayaz, V.; Azimi, N.

    2017-03-01

    In this work we concentrate on the ghost dark energy model within the framework of the Brans-Dicke theory in an anisotropic Universe. Within this framework we discuss the behavior of equation of state, deceleration and dark energy density parameters of the model. We consider the squared sound speed and quest for signs of stability of the model. We also probe observational constraints by using the latest observational data on the ghost dark energy models as the unification of dark matter and dark energy. In order to do so, we focus on observational determinations of the Hubble expansion rate (namely, the expansion history) H(z). Then we evaluate the evolution of the growth of perturbations in the linear regime for both ghost DE and Brans-Dicke theory and compare the results with standard FRW and ΛCDM models. We display the effects of the anisotropy on the evolutionary behavior the ghost DE models where the growth rate is higher in this models. Eventually the growth factor for the ΛCDM Universe will always fall behind the ghost DE models in an anisotropic Universe.

  19. Andrew Wyeth and N.C. Wyeth: a psychodynamic perspective on father and son.

    PubMed

    Shaw, Jon A

    2013-01-01

    This paper examines the relationship between two extraordinary artists, father and son--N.C. Wyeth (1882-1945) and Andrew Wyeth (1917-2009)--and their art. N.C. Wyeth, the father, the most famous illustrator of his day, painted scenes full of drama and action, often of men engaged in violent life and death struggles. N.C. was unable to separate from his powerful mother and yearned for his iconic father. He thought himself an artistic failure and dedicated himself to raising his children to be geniuses. The youngest son, Andrew Wyeth, who lived a "secret life," painted scenes often characterized by pathos: bleak and barren landscapes, leaden skies, tire tracks, gray framed houses, desiccated fields, and circling buzzards. In the father-son relationship, we often seen three themes perpetuated developmentally: (1) the son's identification with the innermost conflicts of his father; (2) the yearning for the iconic father of his youth; and (3) a continuation and disavowal of his father's life. These themes are played out in the relationship between Andrew Wyeth and his father.

  20. 78 FR 6173 - Diana Del Grosso, Ray Smith, Joseph Hatch, Cheryl Hatch, Kathleen Kelley, Andrew Wilklund, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-29

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF TRANSPORTATION Surface Transportation Board Diana Del Grosso, Ray Smith, Joseph Hatch, Cheryl Hatch, Kathleen... Smith, Joseph Hatch, Cheryl Hatch, Kathleen Kelley, Andrew Wilklund, and Richard Kosiba (Petitioners...

  1. Environmental Assessment of Modifications to Building 1535 and Demolition of 3306 at Andrews Air Force Base, Maryland

    DTIC Science & Technology

    2003-09-01

    100 feet except for moderately steep stream banks. Andrews AFB is located in a level plateau between the Anacostia River on the Andrews AFB, MD...surface water quality also because of the potential to introduce sediments and other contaminants into lakes, rivers , and streams. Storm water...watersheds are the Potomac River , Anacostia , and Patuxent. These watersheds drain 2,317 square miles of the east-central portion of the Chesapeake

  2. Three-dimensional pin-to-pin analyses of VVER-440 cores by the MOBY-DICK code

    SciTech Connect

    Lehmann, M.; Mikolas, P.

    1994-12-31

    Nuclear design for the Dukovany (EDU) VVER-440s nuclear power plant is routinely performed by the MOBY-DICK system. After its implementation on Hewlett Packard series 700 workstations, it is able to perform routinely three-dimensional pin-to-pin core analyses. For purposes of code validation, the benchmark prepared from EDU operational data was solved.

  3. More Than Two Sides to Every Coin: Using Melville's "Moby Dick" to Teach Objective and Subjective Description.

    ERIC Educational Resources Information Center

    Drake, David B.

    1995-01-01

    Explains a descriptive analysis exercise based on Chapter 99 of "Moby Dick." Notes that students are given a description of a coin, asked to draw the coin, and then freewrite about what they and their classmates have drawn. States that the exercise is intended to illustrate the relationship between objective and subjective description.…

  4. Controlling instability and phase hops of a kicked two-level ion in Lamb-Dicke regime

    NASA Astrophysics Data System (ADS)

    Chen, Hao; Tan, Jintao; Hai, Kuo; Zhang, Xili; Hai, Wenhua

    2015-12-01

    Nonlinearity and singularity lead to lack of quantum exact solution of a kicked rotor. We here study quantum motion of a laser-kicked two-level ion in the Lamb-Dicke regime and obtain a set of exact solutions of the generalized coherent states. A new stability region of parameter space where classical stability criterion fully agrees with fidelity treatment of quantum ground-state stability is found, which unusually contains the resonance frequency for a weak kick and the larger kick strength for a far-off-resonance frequency. When the field parameters in the stability region are applied, the ion's wave-packet trains continuously oscillate in the Lamb-Dicke regime, while for the parameters in the instability region, they collapse and spread to far away from the Lamb-Dicke regime, resulting in the crossover from linearity to nonlinearity. Meanwhile the laser kicks bring hopping phases of the exact solutions, and lead to stable or unstable hops of the expected momentum and energy. The exact results provide a transparent scheme for using periodic kicks with wider parameter region to localize ions in the Lamb-Dicke regime and for suppressing the instability-induced decoherence in laser-ion interactions, which can be observed in the existing experimental setups and possess potential applications.

  5. A B Dick Model 555. Mimeograph Stencil Printer. An Individualized Model for a Differentiated Secretarial Single Skills Lab.

    ERIC Educational Resources Information Center

    Elgin Community Coll., IL.

    Intended to be used by secretarial science students in a single skills laboratory, this operations manual for a mimeograph stencil printer (A B Dick Model 555) contains step-by-step instructions and simple diagrams designed to be easily understood by the students. (Two other learning modules designed for student use in a single skills laboratory…

  6. Big-Bang nucleosynthesis: Constraints on nuclear reaction rates, neutrino degeneracy, inhomogeneous and Brans-Dicke models

    NASA Astrophysics Data System (ADS)

    Nakamura, Riou; Hashimoto, Masa-Aki; Ichimasa, Ryotaro; Arai, Kenzo

    We review the recent progress in the Big-Bang nucleosynthesis which includes the standard and nonstandard theory of cosmology, effects of neutrino degeneracy, and inhomogeneous nucleosynthesis within the framework of a Friedmann model. As for a nonstandard theory of gravitation, we adopt a Brans-Dicke theory which incorporates a cosmological constant. We constrain various parameters associated with each subject.

  7. Gravitational Collapse in Husain space-time for Brans-Dicke Gravity Theory with Power-law Potential.

    NASA Astrophysics Data System (ADS)

    Rudra, Prabir

    2016-07-01

    The motive of this work is to study gravitational collapse in Husain space-time in Brans-Dicke gravity theory. Among many scalar-tensor theories of gravity, Brans-Dicke is the simplest and the impact of it can be regulated by two parameters associated with it, namely, the Brans-Dicke parameter, ω, and the potential-scalar field dependency parameter 'n' respectively. V. Husain's work on exact solution for null fluid collapse in 1996 has influenced many authors to follow his way to find the end-state of the homogeneous/inhomogeneous dust cloud. Vaidya's metric is used all over to follow the nature of future outgoing radial null geodesics. Detecting whether the central singularity is naked or wrapped by an event horizon, by the existence of future directed radial null geodesic emitted in past from the singularity is the basic objective. To point out the existence of positive trajectory tangent solution, both particular parametric cases(through tabular forms) and wide range contouring process have been applied. Precisely, perfect fluid's equation of state satisfies a wide range of phenomena : from dust to exotic fluid like dark energy. We have used the equation of state parameter 'k' to determine the end state of collapse in different cosmological era. Our main target is to check low ω (more deviations from Einstein gravity-more Brans Dicke effect) and negative 'k' zones. This particularly throws light on the nature of the end-state of collapse in accelerated expansion in Brans Dicke gravity. It is seen that for positive values of EoS parameter 'k', the collapse results in a black hole, whereas for negative values of 'k', naked singularity is the only outcome. It is also to be noted that "low ω" leads to the possibility of getting more naked singularities even for a non-accelerating universe.

  8. Gravitational collapse in Husain space-time for Brans-Dicke gravity theory with power-law potential

    NASA Astrophysics Data System (ADS)

    Rudra, Prabir; Biswas, Ritabrata; Debnath, Ujjal

    2014-12-01

    The motive of this work is to study gravitational collapse in Husain space-time in Brans-Dicke gravity theory. Among many scalar-tensor theories of gravity, Brans-Dicke is the simplest and the impact of it can be regulated by two parameters associated with it, namely, the Brans-Dicke parameter, ω, and the potential-scalar field dependency parameter n respectively. V. Husain's work on exact solution for null fluid collapse in 1996 has influenced many authors to follow his way to find the end-state of the homogeneous/inhomogeneous dust cloud. Vaidya's metric is used all over to follow the nature of future outgoing radial null geodesics. Detecting whether the central singularity is naked or wrapped by an event horizon, by the existence of future directed radial null geodesic emitted in past from the singularity is the basic objective. To point out the existence of positive trajectory tangent solution, both particular parametric cases (through tabular forms) and wide range contouring process have been applied. Precisely, perfect fluid's EoS satisfies a wide range of phenomena: from dust to exotic fluid like dark energy. We have used the EoS parameter k to determine the end state of collapse in different cosmological era. Our main target is to check low ω (more deviations from Einstein gravity-more Brans Dicke effect) and negative k zones. This particularly throws light on the nature of the end-state of collapse in accelerated expansion in Brans Dicke gravity. It is seen that for positive values of EoS parameter k, the collapse results in a black hole, whereas for negative values of k, naked singularity is the only outcome. It is also to be noted that "low ω" leads to the possibility of getting more naked singularities even for a non-accelerating universe.

  9. Andrew's Law

    THOMAS, 113th Congress

    Sen. Schumer, Charles E. [D-NY

    2013-11-21

    Senate - 11/21/2013 Read twice and referred to the Committee on Health, Education, Labor, and Pensions. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  10. Stability analysis of agegraphic dark energy in Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Farajollahi, H.; Sadeghi, J.; Pourali, M.; Salehi, A.

    2012-05-01

    Stability analysis of agegraphic dark energy in Brans-Dicke theory is presented in this paper. We constrain the model parameters with the observational data and thus the results become broadly consistent with those expected from experiment. Stability analysis of the model without best fitting shows that universe may begin from an unstable state passing a saddle point and finally become stable in future. However, with the best fitted model, There is no saddle intermediate state. The agegraphic dark energy in the model by itself exhibits a phantom behavior. However, contribution of cold dark matter on the effective energy density modifies the state of the universe from phantom phase to quintessence one. The statefinder diagnosis also indicates that the universe leaves an unstable state in the past, passes the LCDM state and finally approaches the sable state in future.

  11. On holographic dark energy in non-isotropic Universe with Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Hossienkhani, H.

    2016-07-01

    A spatially homogeneous and anisotropic Bianchi type I Universe has been studied with the interacting holographic dark energy (HDE) in the framework of Brans-Dicke theory. At first, we obtain the equation of state parameter, the deceleration parameter and the evolution equation of the interacting HDE in BD theory. We find that, in this case, ω_{Λ} can cross the phantom line (ω_{Λ}>-1) and eventually the Universe approaches a de-Sitter phase of expansion (ω_{Λ}→-1). Then, we extend our study to the case of stability of the interacting HDE in BI Universe according to BD theory. In case of we find that the squared sound speed of the interacting HDE is either positive or negative. This implies that the interacting HDE in BD theory can lead to a stable Universe favored by observations at the present time in an anisotropic Universe.

  12. High-order corrections on the laser cooling limit in the Lamb-Dicke regime.

    PubMed

    Yi, Zhen; Gu, Wen-Ju

    2017-01-23

    We investigate corrections on the cooling limit of high-order Lamb-Dicke (LD) parameters in the double electromagnetically induced transparency (EIT) cooling scheme. Via utilizing quantum interferences, the single-phonon heating mechanism vanishes and the system evolves to a double dark state, from which we will obtain the mechanical occupation on the single-phonon excitation state. In addition, the further correction induced by two-phonon heating transitions is included to achieve a more accurate cooling limit. There exist two pathways of two-phonon heating transitions: direct two-phonon excitation from the dark state and further excitation from the single-phonon excited state. By adding up these two parts of correction, the obtained analytical predictions show a well consistence with numerical results. Moreover, we find that the two pathways can destructively interfere with each other, leading to the elimination of two-phonon heating transitions and achieving a lower cooling limit.

  13. Thermodynamics of charged rotating black branes in Brans-Dicke theory with quadratic scalar field potential

    SciTech Connect

    Dehghani, M. H.; Pakravan, J.; Hendi, S. H.

    2006-11-15

    We construct a class of charged rotating solutions in (n+1)-dimensional Maxwell-Brans-Dicke theory with flat horizon in the presence of a quadratic potential and investigate their properties. These solutions are neither asymptotically flat nor (anti)-de Sitter. We find that these solutions can present black brane, with inner and outer event horizons, an extreme black brane or a naked singularity provided the parameters of the solutions are chosen suitably. We compute the finite Euclidean action through the use of counterterm method, and obtain the conserved and thermodynamic quantities by using the relation between the action and free energy in grand-canonical ensemble. We find that these quantities satisfy the first law of thermodynamics, and the entropy does not follow the area law.

  14. Non-existence of Brans-Dicke theory in higher dimensional FRW universe

    NASA Astrophysics Data System (ADS)

    Çaǧlar, Halife; Aygün, Sezgin

    2016-06-01

    In this paper, we have studied exact solutions of Brans-Dicke (BD) theory for higher dimensional generalized Friedmann-Robertson-Walker (FRW) universe in the presence of strange quark matter (SQM) attached to the string cloud and domain walls. We have obtained that string tension density does not survive in this model. This result agrees with Kiran and Reddy, Krori et al., Sahoo and Mishra and Reddy. Also we have obtained constant scalar field in the presence of string cloud and domain walls. Then BD theory does not observe for higher dimensional FRW universe with SQM attached to the string cloud and domain walls. Our BD solutions turn into general relativity (GR). Finally, some physical properties are discussed.

  15. Exact Solutions of Brans-Dicke Wormholes in the Presence of Matter

    NASA Astrophysics Data System (ADS)

    Garcia, Nadiezhda Montelongo; Lobo, Francisco S. N.

    A fundamental ingredient in wormhole physics is the presence of exotic matter, which involves the violation of the null energy condition. Although a plethora of wormhole solutions have been explored in the literature, it is useful to find geometries that minimize the usage of exotic matter. In this work, we find exact wormhole solutions in Brans-Dicke theory where the normal matter threading the wormhole satisfies the null energy condition throughout the geometry. Thus, the latter implies that it is the effective stress-energy tensor containing the scalar field, that plays the role of exotic matter, that is responsible for sustaining the wormhole geometry. More specifically, we consider a zero redshift function and a particular choice for the scalar field and determine the remaining quantities, namely, the stress-energy tensor components and the shape function. The solution found is not asymptotically flat, so that this interior wormhole spacetime needs to be matched to an exterior vacuum solution.

  16. [The application of Dick instrumentation in the field of spine surgery].

    PubMed

    Ye, Q

    1993-02-01

    From June, 1989 to March, 1991, 24 cases were treated in our department with the Dick technique. The study population included 7 patients with fresh horacolumber spine fracture, 10 with late spinal fracture (15 of the above 17 cases had incomplete paraplegia), 3 with ankylosing spondylitis, 2 with tuberculosis, and one each with spondylolisthesis and spine tumor. The results of these 24 cases were as follows. In the fresh fracture group, all the spine fractures were reduced completely. The 2 patients without neurological defects returned to work 3 months after operation. The 3 with incomplete paraplegia had rapid neurological recovery and could walk with a brace 3 months after surgical treatment. The 2 with complete paraplegia did not recover after toperation. In the late fracture group, traumatic kyphotic curve were reduced partially and back pain was decreased markedly in all 10 cases. Muscular power was increased significantly in 3 cases; they are all able to walk with a cane. Spasticity was remarkably improved in 2 patients after operation; they can now walk with crutches. Three patients obtained complete cure of incontinence. Four patients had no significant improvement. In the 3 patients with ankylosing spondylitis, the initial average kyphotic curve was 73.3 degrees, while the postoperative average curve was 28.3 degrees. The result in treating spinal stenosis due to degenerative spondylolisthesis was good: the slipping vertebrae were stabilized and fused with the Dick system after thorough decompression. In the tumor and Tb-spine cases, the patients recovered and were ambulatory soon after operation, thanks to rigid internal fixation.

  17. Cosmic microwave background with Brans-Dicke gravity. II. Constraints with the WMAP and SDSS data

    SciTech Connect

    Wu Fengquan; Chen Xuelei

    2010-10-15

    Using the covariant formalism developed in a companion paper [F.-Q. Wu, L. E. Qiang, X. Wang, and X. Chen, preceding Article, Phys. Rev. D 82, 083002 (2010)] (paper I), we derive observational constraints on the Brans-Dicke model in a flat Friedmann-Lemaitre-Robertson-Walker universe with a cosmological constant and cold dark matter. The CMB observations we use include the Wilkinson Microwave Anisotropy Probe 5 yr data, the Arcminute Cosmology Bolometer Array Receiver 2007 data, the Cosmic Background Imager polarization data, and the Balloon Observations of Millimetric Extragalactic Radiation and Geophysics 2003 flight data. For the large scale structure we use the matter power spectrum data measured with the luminous red galaxy survey of the Sloan Digital Sky Survey Data Release 4. We parametrize the Brans-Dicke parameter {omega} with a new parameter {zeta}=ln(1/{omega}+1), and use the Markov-Chain Monte Carlo method to explore the parameter space. We find that using CMB data alone, one could place some constraints on positive {zeta} or {omega}, but negative {zeta} or {omega} could not be constrained effectively. However, with additional large scale structure data, one could break the degeneracy at {zeta}<0. The 2{sigma} (95.5%) bound on {zeta} is -0.008 37<{zeta}<0.010 18 (corresponding to {omega}<-120.0 or {omega}>97.8). We also obtained constraints on G/G, the rate of change of G at present, as -1.75x10{sup -12} yr{sup -1}

  18. Cognition About the Creative Process – Interview With Dr Andrew P. Allen

    PubMed Central

    Allen, Andrew P.; Loughnane, Lynda

    2016-01-01

    What is the relationship between the creative process and cognition and perception? Lynda Loughnane, a master’s student in Art and Process in Crawford College of Art and Design, Cork, Ireland interviewed Dr Andrew P. Allen about the subject. Areas covered include mindfulness, Type 1 and Type 2 thinking, stage theories of creativity, engagement with the art process and the artwork, phenomenology and consciousness with and without self report. The interview was constructed to cover a wide range of subject matter, so as to gather as much information as possible in layman's language about the cognitive process in relation to creativity and interaction with art. PMID:27872674

  19. Cognition About the Creative Process - Interview With Dr Andrew P. Allen.

    PubMed

    Allen, Andrew P; Loughnane, Lynda

    2016-11-01

    What is the relationship between the creative process and cognition and perception? Lynda Loughnane, a master's student in Art and Process in Crawford College of Art and Design, Cork, Ireland interviewed Dr Andrew P. Allen about the subject. Areas covered include mindfulness, Type 1 and Type 2 thinking, stage theories of creativity, engagement with the art process and the artwork, phenomenology and consciousness with and without self report. The interview was constructed to cover a wide range of subject matter, so as to gather as much information as possible in layman's language about the cognitive process in relation to creativity and interaction with art.

  20. STS-75 Mission Cmdr Andrew Allen inspects SPREE in O&C

    NASA Technical Reports Server (NTRS)

    1995-01-01

    STS-75 Mission Commander Andrew Allen inspects the Shuttle Potential and Return Experiment (SPRE) that will fly on his mission in the Operations and Checkout (O&C) Building. This 14- day mission is now scheduled for early 1996 aboard the Space Shuttle Orbiter Columbia. The primary payloads are the Tethered Satellite System-1R (TSS-1R) and the U.S. Microgravity Payload-3 (USMP-3). The 'R' designation indicates a reflight of the TSS-1. It originally flew on STS-46 in July 1992 but achieved only partial success.

  1. Management of Oro-Nasal Fistula Using Andrew's Bridge: A Case Report.

    PubMed

    Harish, P V; Bhojaraju, Nandakishore; Sowmya, G R; Gangaiah, Makam

    2014-09-01

    Oro-nasal fistula is the most common complication following the surgical closure of the cleft palate. Retention is the paramount factor in the successful prosthodontic habilitation of cleft palate patients. Various precision attachments have provided us with the opportunity to make the prosthesis fixed removable type; giving a double advantage to the patient i.e. comfort through fixed type and easy maintenance through removal type. This case report describes a case of oro-nasal fistula habilitated with an obturator attached to Andrew's bridge, which had good retention and esthetics.

  2. Howard Andrew Knox and the origins of performance testing on Ellis Island, 1912-1916.

    PubMed

    Richardson, John T E

    2003-05-01

    Howard Andrew Knox was Assistant Surgeon at the immigration station at Ellis Island, New York, between April 1912 and May 1916. In response to public disquiet that the physicians at Ellis Island were failing to prevent mentally retarded people from entering the country, Knox and his colleagues assembled a collection of performance tests that could be administered to potential immigrants with little knowledge of the English language. They were subsequently used in clinical practice and in educational, psychological, and social research. Because of the early work done at Ellis Island, it is nowadays taken for granted that any adequate measure of intelligence must include both verbal and performance subtests.

  3. Emergency mosquito control associated with Hurricane Andrew--Florida and Louisiana, 1992.

    PubMed

    1993-04-09

    Hurricane Andrew crossed south Florida on August 24, 1992 entered the Gulf of Mexico, and struck the Louisiana coast on August 26. In Florida, an estimated 25,000 housing units were destroyed and 37,000 severely damaged in a 200,000-acre area in the southern portion of Dade County; in Louisiana, an estimated 25,000 housing units were destroyed or severely damaged by the storm, primarily in the coastal sections of the 36-parish disaster area. Initial assessment of the disaster areas indicated a need for vector surveillance and control (1). This report summarizes actions to assess and alleviate mosquito-related problems in Florida and Louisiana.

  4. Development of pile foundation bias factors using observed behavior of platforms during Hurricane Andrew

    SciTech Connect

    Aggarwal, R.K.; Litton, R.W.; Cornell, C.A.; Tang, W.H.; Chen, J.H.; Murff, J.D.

    1996-12-31

    The performance of more than 3,000 offshore platforms in the Gulf of Mexico was observed during the passage of Hurricane Andrew in August 1992. This event provided an opportunity to test the procedures used for platform analysis and design. A global bias was inferred for overall platform capacity and loads in the Andrew Joint Industry Project (JIP) Phase 1. It was predicted that the pile foundations of several platforms should have failed, but did not. These results indicated that the biases specific to foundation failure modes may be higher than those of jacket failure modes. The biases in predictions of foundation failure modes were therefore investigated further in this study. The work included capacity analysis and calibration of predictions with the observed behavior for 3 jacket platforms and 3 caissons using Bayesian updating. Bias factors for two foundation failure modes, lateral shear and overturning, were determined for each structure. Foundation capacity estimates using conventional methods were found to be conservatively biased overall.

  5. ANDREWES'S CHRISTMAS FAIRY TALE: ATYPICAL THINKING ABOUT CANCER AETIOLOGY IN 1935.

    PubMed

    Sankaran, Neeraja; van Helvoort, Ton

    2016-06-20

    This paper uses a short 'Christmas fairy-story for oncologists' sent by Christopher Andrewes with a 1935 letter to Peyton Rous as the centrepiece of a reflection on the state of knowledge and speculation about the viral aetiology of cancer in the 1930s. Although explicitly not intended for public circulation at the time, the fairy-story merits publication for its significance in the history of ideas about viruses, which are taken for granted today. Andrewes and Rous were prominent members of the international medical research community and yet faced strong resistance to their theory that viruses could cause such tumours as chicken sarcomas and rabbit papillomas. By looking at exchanges between these men among themselves and other proponents of their theories and with their oncologist detractors, we highlight an episode in the behind-the-scenes workings of medical science and show how informal correspondence helped keep alive a vital but then heterodox idea about the role of viruses in causing cancer.

  6. Andrewes's christmas fairy tale: atypical thinking about cancer aetiology in 1935

    PubMed Central

    Sankaran, Neeraja; van Helvoort, Ton

    2016-01-01

    This paper uses a short ‘Christmas fairy-story for oncologists’ sent by Christopher Andrewes with a 1935 letter to Peyton Rous as the centrepiece of a reflection on the state of knowledge and speculation about the viral aetiology of cancer in the 1930s. Although explicitly not intended for public circulation at the time, the fairy-story merits publication for its significance in the history of ideas about viruses, which are taken for granted today. Andrewes and Rous were prominent members of the international medical research community and yet faced strong resistance to their theory that viruses could cause such tumours as chicken sarcomas and rabbit papillomas. By looking at exchanges between these men among themselves and other proponents of their theories and with their oncologist detractors, we highlight an episode in the behind-the-scenes workings of medical science and show how informal correspondence helped keep alive a vital but then heterodox idea about the role of viruses in causing cancer. PMID:27386716

  7. Ecological evaluation of proposed dredged material from St. Andrew Bay, Florida

    SciTech Connect

    Mayhew, H.L.; Word, J.Q.; Kohn, N.P.; Pinza, M.R.; Karle, L.M.; Ward, J.A.

    1993-10-01

    The US Army Corps of Engineers (USACE), Mobile District, requested that the Battelle/Marine Sciences Laboratory (MSL) conduct field sampling and chemical and biological testing to determine the suitability of potential dredged material for open ocean disposal. Sediment from St. Andrew Bay was chemically characterized and evaluated for biological toxicity and bioaccumulation of contaminants. The Tier III guidance for ocean disposal testing requires tests of water column effects (following dredged material disposal), deposited sediment toxicity, and bioaccumulation of contaminants from deposited sediment (dredged material). To meet these requirements, the MSL conducted suspended-particulate-phase (SPP) toxicity tests, solid-phase toxicity tests, and bioaccumulation testing on sediment representing potential dredged material from Panama City Harbor. Physical and chemical characterization of sediment to support toxicity and bioaccumulation results was also conducted on both the test and reference sediments. The MSL collected sediment samples from five sites in St. Andrew Bay and one reference site near Lands End Peninsula. The five test sediments and the reference sediment were analyzed for physical and chemical sediment characteristics, SPP chemical contaminants, solid-phase toxicity, SPP toxicity, and bioaccumulation of contaminants.

  8. Demographic effects of natural disasters: a case study of Hurricane Andrew.

    PubMed

    Smith, S K; McCarty, C

    1996-05-01

    Many studies have considered the economic, social, and psychological effects of hurricanes, earthquakes, floods, tornadoes, and other natural disasters, but few have considered their demographic effects. In this paper we describe and evaluate a method for measuring the effects of Hurricane Andrew on the housing stock and population distribution in Dade County, Florida. Using information collected through sample surveys and from other data sources, we investigate the extent of housing damages, the number of people forced out of their homes, where they went, how long they stayed, and whether they returned to their prehurricane residences. We conclude that more than half the housing units in Dade County were damaged by Hurricane Andrew; that more than 353,000 people were forced to leave their homes, at least temporarily; and that almost 40,000 people left the county permanently as a direct result of the hurricane. We believe that this study will provide methodological guidance to analysts studying the demographic effects of other large-scale natural disasters.

  9. Sleep disturbance and its relationship to psychiatric morbidity after Hurricane Andrew.

    PubMed

    Mellman, T A; David, D; Kulick-Bell, R; Hebding, J; Nolan, B

    1995-11-01

    Sleep disturbance is an important dimension of posttraumatic stress disorder (PTSD), but most of the limited available data were obtained years after the original traumatic event. This study provides information on sleep disturbance and its relationship to posttraumatic morbidity from evaluations done within a year after the trauma. Sleep and psychiatric symptoms of 54 victims (12 men and 42 women) of Hurricane Andrew who had no psychiatric illness in the 6 months before the hurricane were evaluated. A subset of hurricane victims with active psychiatric morbidity (N = 10) and nine comparison subjects who were unaffected by the hurricane were examined in a sleep laboratory. A broad range of sleep-related complaints were rated as being greater after the hurricane, and psychiatric morbidity (which was most commonly PTSD, followed by depression) had a significant effect on most of the subjective sleep measures. In addition, subjects with active morbidity endorsed greater frequencies of "bad dreams" and general sleep disturbances before the hurricane. Polysomnographic results for the hurricane victims revealed a greater number of arousals and entries into stage 1 sleep. REM density correlated positively with both the PTSD symptom of reexperiencing trauma and global distress. Subjects affected by Hurricane Andrew reported sleep disturbances, particularly those subjects with psychiatric morbidity. Tendencies to experience bad dreams and interrupted sleep before a trauma appear to mark vulnerability to posttraumatic morbidity. Results of sleep laboratory evaluations suggested brief shifts toward higher arousal levels during sleep for PTSD subjects and a relationship of REM phasic activity and symptom severity.

  10. Delayed tree mortality in the Atchafalaya Basin of Southern Louisiana following Hurricane Andrew

    USGS Publications Warehouse

    Keeland, B.D.; Gorham, L.E.

    2009-01-01

    Hurricanes can damage trees in forested wetlands, and the potential for mortality related to these storms exists due to the effects of tree damage over time. In August 1992, Hurricane Andrew passed through the forested wetlands of southern Louisiana with winds in excess of 225 kph. Although more than 78 of the basal area was destroyed in some areas, most trees greater than 2.5 cm dbh were alive and resprouting prolifically the following year (98.8). Survival of most tree species was similarly high two years after the hurricane, but mortality rates of some species increased dramatically. For example, Populus heterophylla (swamp cottonwood) mortality increased from 7.8 to 59.2 (n 76) and Salix interior (sandbar willow) mortality increased from 4.5 to 57.1 (n 21). Stem sprouts on many up-rooted hardwood trees of other species were still alive in 1998, 6 years after the hurricane. Due to the understory tree species composition, regeneration, and high levels of resprouting, there was little change in species composition or perhaps a slight shift toward more shade and flood tolerant species six years following the hurricane event. Triadica sebifera (Chinese tallow) was found on some of the sites heavily disturbed by Hurricane Andrew, and may proliferate at the expense of native tree species. ?? 2009 The Society of Wetland Scientists.

  11. Impacts of Hurricane Andrew on carbonate platform environments, northern Great Bahama Bank

    NASA Astrophysics Data System (ADS)

    Boss, Stephen K.; Neumann, A. Conrad

    1993-10-01

    The northern (most energetic) quadrant of Hurricane Andrew (August 1992) passed over leeward-margin sand waves, bank-top sand shoals, reefs, and low islands of Great Bahama Bank for which an extensive prestorm data base exists. A reconnaissance survey seven weeks after Hurricane Andrew evaluated storm impacts on these bank-top settings. Resurveyed seismic profiles showed that positions, dimensions, and orientations of platform sand bodies were unchanged relative to fixed bedrock features. Surveys of reef communities indicated only minor storm-related disturbance. Coral bleaching may be due to storm-induced environmental stress. In addition, storm-wave plucking of boulders from emergent rocky cays resulted in localized crushing of reef biota. On low islands, beach erosion and storm surge were insignificant, and storm damage to Casuarina forests was minor and substrate-specific. Observed minimal hurricane impacts on northern Great Bahama Bank environments lying 10-75 km from the hurricane eye are reconciled by analysis of meteorological data, which show significant weakening of the storm (expressed as a rise in central barometric pressure of ˜20 mbar) during passage across the bank-top. This study demonstrates the importance of specific dynamic aspects of hurricanes (e.g., varying intensity, strength, size, forward speed, duration) which influence their geologic potential, even over relatively short distances along the storm track of an individual hurricane.

  12. James Gregory, the University observatory and the early acquisition of scientific instruments at the University of St Andrews

    PubMed Central

    Rawson, Helen C.

    2015-01-01

    James Gregory, inventor of the reflecting telescope and Fellow of the Royal Society, was the first Regius Professor of Mathematics of the University of St Andrews, 1668–74. He attempted to establish in St Andrews what would, if completed, have been the first purpose-built observatory in the British Isles. He travelled to London in 1673 to purchase instruments for equipping the observatory and improving the teaching and study of natural philosophy and mathematics in the university, seeking the advice of John Flamsteed, later the first Astronomer Royal. This paper considers the observatory initiative and the early acquisition of instruments at the University of St Andrews, with reference to Gregory's correspondence, inventories made ca. 1699–ca. 1718 and extant instruments themselves, some of which predate Gregory's time. It examines the structure and fate of the university observatory, the legacy of Gregory's teaching and endeavours, and the meridian line laid down in 1748 in the University Library.

  13. Evaluation of the frequency instability limited by Dick effect in the microwave 199Hg+ trapped-ion clock

    NASA Astrophysics Data System (ADS)

    Chen, Yi-He; She, Lei; Wang, Man; Yang, Zhi-Hui; Liu, Hao; Li, Jiao-Mei

    2016-12-01

    In the microwave 199Hg+ trapped-ion clock, the frequency instability degradation caused by the Dick effect is unavoidable because of the periodical interrogating field. In this paper, the general expression of the sensitivity function g(t) to the frequency fluctuation of the interrogating field with Nπ-pulse (N is odd) is derived. According to the measured phase noise of the 40.5-GHz microwave synthesizer, the Dick-effect limited Allan deviation of our 199Hg+ trapped-ion clock is worked out. The results indicate that the limited Allan deviations are about and respectively in the linear ion trap and in the two-segment extended linear ion trap under our present experimental parameters. Project supported by the National Natural Science Foundation of China (Grant Nos. 11074248 and 11474320).

  14. Anisotropic string cosmological model in Brans–Dicke theory of gravitation with time-dependent deceleration parameter

    SciTech Connect

    Maurya, D. Ch. Zia, R. Pradhan, A.

    2016-10-15

    We discuss a spatially homogeneous and anisotropic string cosmological models in the Brans–Dicke theory of gravitation. For a spatially homogeneous metric, it is assumed that the expansion scalar θ is proportional to the shear scalar σ. This condition leads to A = kB{sup m}, where k and m are constants. With these assumptions and also assuming a variable scale factor a = a(t), we find solutions of the Brans–Dicke field equations. Various phenomena like the Big Bang, expanding universe, and shift from anisotropy to isotropy are observed in the model. It can also be seen that in early stage of the evolution of the universe, strings dominate over particles, whereas the universe is dominated by massive strings at the late time. Some physical and geometrical behaviors of the models are also discussed and observed to be in good agreement with the recent observations of SNe la supernovae.

  15. Anisotropic string cosmological model in Brans-Dicke theory of gravitation with time-dependent deceleration parameter

    NASA Astrophysics Data System (ADS)

    Maurya, D. Ch.; Zia, R.; Pradhan, A.

    2016-10-01

    We discuss a spatially homogeneous and anisotropic string cosmological models in the Brans-Dicke theory of gravitation. For a spatially homogeneous metric, it is assumed that the expansion scalar θ is proportional to the shear scalar σ. This condition leads to A = kB m , where k and m are constants. With these assumptions and also assuming a variable scale factor a = a( t), we find solutions of the Brans-Dicke field equations. Various phenomena like the Big Bang, expanding universe, and shift from anisotropy to isotropy are observed in the model. It can also be seen that in early stage of the evolution of the universe, strings dominate over particles, whereas the universe is dominated by massive strings at the late time. Some physical and geometrical behaviors of the models are also discussed and observed to be in good agreement with the recent observations of SNe la supernovae.

  16. Interaction of Gravitational field and Brans-Dicke field in R/W universe containing Dark Energy like fluid

    NASA Astrophysics Data System (ADS)

    Priyokumar Singh, Kangujam; Manihar Singh, Koijam; Dewri, Mukunda

    2016-04-01

    On studying some new models of Robertson-Walker universes with a Brans-Dicke scalar field, it is found that most of these universes contain a dark energy like fluid which confirms the present scenario of the expansion of the universe. In one of the cases, the exact solution of the field equations gives a universe with a false vacuum, while in another it reduces to that of dust distribution in the Brans-Dicke cosmology when the cosmological constant is not in the picture. In one particular model it is found that the universe may undergo a Big Rip in the future, and thus it will be very interesting to investigate such models further.

  17. Stationary axially symmetric exterior solutions in the five-dimensional representation of the Brans-Dicke-Jordan theory of gravitation

    SciTech Connect

    Bruckman, W.

    1986-11-15

    The inverse scattering method of Belinsky and Zakharov is used to investigate axially symmetric stationary vacuum soliton solutions in the five-dimensional representation of the Brans-Dicke-Jordan theory of gravitation, where the scalar field of the theory is an element of a five-dimensional metric. The resulting equations for the spacetime metric are similar to those of solitons in general relativity, while the scalar field generated is the product of a simple function of the coordinates and an already known scalar field solution. A family of solutions is considered that reduce, in the absence of rotation, to the five-dimensional form of a well-known Weyl-Levi Civita axially symmetric static vacuum solution. With a suitable choice of parameters, this static limit becomes equivalent to the spherically symmetric solution of the Brans-Dicke theory. An exact metric, in which the Kerr-scalar McIntosh solution is a special case, is given explicitly.

  18. Charged black holes in string-inspired gravity. I. Causal structures and responses of the Brans-Dicke field

    NASA Astrophysics Data System (ADS)

    Hansen, Jakob; Yeom, Dong-han

    2014-10-01

    We investigate gravitational collapses of charged black holes in string-inspired gravity models, including dilaton gravity and braneworld model, as well as f( R) gravity and the ghost limit. If we turn on gauge coupling, the causal structures and the responses of the Brans-Dicke field depend on the coupling between the charged matter and the BransDicke field. For Type IIA inspired models, a Cauchy horizon exists, while there is no Cauchy horizon for Type I or Heterotic inspired models. For Type IIA inspired models, the no-hair theorem is satisfied asymptotically, while it is biased to the weak coupling limit for Type I or Heterotic inspired models. Apart from string theory, we find that in the ghost limit, a gravitational collapse can induce inflation by itself and create one-way traversable wormholes without the need of other special initial conditions.

  19. A Derivation of the Dick Effect from Control-Loop Models for Periodically Interrogated Passive Frequency Standards

    NASA Technical Reports Server (NTRS)

    Greenhall, Charles A.

    1996-01-01

    The phase of a frequency standard that uses periodic interrogation and control of a local oscillator (LO) is degraded by a long-term random-walk component induced by downconversion of LO noise into the loop passband. The Dick formula for the noise level of this degradation can be derived from explicit solotions of two LO control-loop models. A summary of the derivations is given here.

  20. 33 CFR 334.680 - Gulf of Mexico, southeast of St. Andrew Bay East Entrance, small-arms firing range, Tyndall Air...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Gulf of Mexico, southeast of St... AND RESTRICTED AREA REGULATIONS § 334.680 Gulf of Mexico, southeast of St. Andrew Bay East Entrance... the Gulf of Mexico, southeast of St. Andrew Bay East Entrance within a rectangular area beginning at a...

  1. 33 CFR 334.680 - Gulf of Mexico, southeast of St. Andrew Bay East Entrance, small-arms firing range, Tyndall Air...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Gulf of Mexico, southeast of St... AND RESTRICTED AREA REGULATIONS § 334.680 Gulf of Mexico, southeast of St. Andrew Bay East Entrance... the Gulf of Mexico, southeast of St. Andrew Bay East Entrance within a rectangular area beginning at a...

  2. 33 CFR 334.680 - Gulf of Mexico, southeast of St. Andrew Bay East Entrance, small-arms firing range, Tyndall Air...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Gulf of Mexico, southeast of St... AND RESTRICTED AREA REGULATIONS § 334.680 Gulf of Mexico, southeast of St. Andrew Bay East Entrance... the Gulf of Mexico, southeast of St. Andrew Bay East Entrance within a rectangular area beginning at a...

  3. Children's predisaster functioning as a predictor of posttraumatic stress following Hurricane Andrew.

    PubMed

    La Greca, A M; Silverman, W K; Wasserstein, S B

    1998-12-01

    This study examined (a) children's predisaster behavioral and academic functioning as a predictor of posttraumatic stress (PTS) following Hurricane Andrew and (b) whether children who were exposed to the disaster would display a worsening of prior functioning. Fifteen months before the disaster, 92 4th through 6th graders provided self-reports of anxiety; peers and teachers rated behavior problems (anxiety, inattention, and conduct) and academic skills. Measures were repeated 3 months postdisaster; children also reported PTS symptoms and hurricane-related experiences (i.e., exposure). PTS symptoms were again assessed 7 months postdisaster. At 3 months postdisaster, children's exposure to the disaster, as well as predisaster ratings of anxiety, inattention, and academic skills, predicted PTS symptoms. By 7 months, only exposure, African American ethnicity, and predisaster anxiety predicted PTS. Prior anxiety levels also worsened as a result of exposure to the disaster. The findings have implications for identifying and treating children at risk for stress reactions following a catastrophic disaster.

  4. Business closure and relocation: a comparative analysis of the Loma Prieta earthquake and Hurricane Andrew.

    PubMed

    Wasileski, Gabriela; Rodríguez, Havidán; Diaz, Walter

    2011-01-01

    The occurrence of a number of large-scale disasters or catastrophes in recent years, including the Indian Ocean tsunami (2004), the Kashmir earthquake (2005), Hurricane Katrina (2005) and Hurricane Ike (2008), have raised our awareness regarding the devastating effects of disasters on human populations and the importance of developing mitigation and preparedness strategies to limit the consequences of such events. However, there is still a dearth of social science research focusing on the socio-economic impact of disasters on businesses in the United States. This paper contributes to this research literature by focusing on the impact of disasters on business closure and relocation through the use of multivariate logistic regression models, specifically focusing on the Loma Prieta earthquake (1989) and Hurricane Andrew (1992). Using a multivariate model, we examine how physical damage to the infrastructure, lifeline disruption and business characteristics, among others, impact business closure and relocation following major disasters.

  5. STS-89 M.S. Andrew Thomas, poses the day before launch

    NASA Technical Reports Server (NTRS)

    1998-01-01

    STS-89 Mission Specialist Andrew Thomas, Ph.D., poses at KSC's Launch Pad 39A wearing a miniature koala bear on the day before the scheduled launch of Space Shuttle Endeavour that will carry him up to the Russian Space Station Mir. Final preparations are under way toward liftoff on Jan. 22 on the eighth mission to dock with Mir. After docking, Dr. Thomas will transfer to the space station, succeeding David Wolf, M.D., who will return to Earth aboard Endeavour. Dr. Thomas, who was born and educated in South Australia, will live and work on Mir until June. STS-89 is scheduled for liftoff at 9:48 p.m. EST.

  6. STS-89 M.S. Andrew Thomas, poses the day before launch

    NASA Technical Reports Server (NTRS)

    1998-01-01

    STS-89 Mission Specialist Andrew Thomas, Ph.D., poses at KSC's Launch Pad 39A wearing a miniature koala bear on the day before the scheduled launch of Space Shuttle Endeavour that will carry him up to the Russian Space Station Mir. Final preparations are under way toward liftoff on Jan. 22 on the eighth mission to dock with Mir. After docking, Dr. Thomas will transfer to the space station, succeeding David Wolf, M.D., who will return to Earth aboard Endeavour. Dr. Thomas, who was born and educated in South Australia, will live and work on Mir until June. STS-89 is scheduled for liftoff at 9:48 p.m. EST.

  7. A conversation with Andrew Benson: reflections on the discovery of the Calvin-Benson cycle.

    PubMed

    Benson, Andrew

    2013-03-01

    On June 26-27, 2012, one of us (BBB) made a video based on an interview conducted with Andrew A. Benson, Professor Emeritus, Scripps Institution of Oceanography, University of California, San Diego, CA, USA. The video was first shown in a seminar presented by BBB on July 27, 2012 at the Calvin Laboratory, University of California, Berkeley, to mark the departure of the Energy Biosciences Institute to a new building. Here we record the conversation taking place during the interview. The Brancraft Library on the Berkeley campus will house the video's transcript in its oral histories collection, and the video will be housed in its motion picture collection. The video and the transcript have also been posted on You Tube (http://youtu.be/GfQQJ2vR_xE).

  8. Damage Survey of Hurricane Andrew and Its Relationship to the Eyewall.

    NASA Astrophysics Data System (ADS)

    Wakimoto, Roger M.; Black, Peter G.

    1994-02-01

    A damage map documenting Hurricane Andrew's destructive land fall over southern Florida is presented. Vectors that represent the direction of winds causing damage to trees and structures are shown along with an F-scale rating in order to assess the strength of the near-surface winds. It is hypothesized that increased surface roughness once the hurricane made landfall may have contributed to a surface wind enhancement resulting in the strongest winds ever estimated (F3) for a landfall hurricane. This intense damage occurred primarily during the "second" period of strong winds associated with the east side of the eyewall. For the first time, a well-defined circulation in the damage pattern by the second wind was documented. A superposition of radar data from Miami and Key West on top of the damage map provides the first detailed examination of the relationship between the eyewall and the surface flow field as estimated from the damage vectors.

  9. Stability and change in stress, resources, and psychological distress following natural disaster: Findings from hurricane Andrew.

    PubMed

    Norris, F H; Perilla, J L; Riad, J K; Kaniasty, K; Lavizzo, E A

    1999-01-01

    Abstract The stress, resource, and symptom levels of 241 residents of southern Dade County, Florida were assessed 6 and 30 months after Hurricane Andrew. Percentages meeting study criteria for depression and PTSD did not change over time. Whereas mean levels of intrusion and arousal decreased, depressive symptoms remained stable, and avoidance/numbing symptoms actually increased. Intrusion and arousal were associated more strongly with pre-disaster factors (gender, ethnicity) and within-disaster factors (injury, property loss) than with post-disaster factors (stress, resources), but the reverse was true for depression and avoidance. Changes over time in symptoms were largely explained by changes over time in stress and resources. The findings indicate that ongoing services are needed to supplement the crisis-oriented assistance typically offered to disaster victims.

  10. Comprehensive assessment of health needs 2 months after Hurricane Andrew--Dade County, Florida, 1992.

    PubMed

    1993-06-11

    On August 24, 1992, Hurricane Andrew struck southern Florida. More than 28,000 houses, mobile homes, and apartment buildings were destroyed, and approximately 107,000 additional dwellings sustained major damage. An estimated 180,000 persons were left homeless; insured damages were estimated at $15.5 billion and total damages at more than $30 billion. During the recovery period, many private and public health-care facilities damaged or destroyed in the storm were not functional. During November 3-13, to help prioritize health needs and direct public health resources, the Dade County Public Health Unit of the Florida Department of Health and Rehabilitative Services conducted a survey to assess health needs and the availability of health-care services during the recovery phase with funds provided by the Federal Emergency Management Agency (FEMA). This report summarizes the results of the survey.

  11. Symptoms of posttraumatic stress in children after Hurricane Andrew: a prospective study.

    PubMed

    La Greca, A; Silverman, W K; Vernberg, E M; Prinstein, M J

    1996-08-01

    The authors examined symptoms of posttraumatic stress in 3rd-5th grade children during the school year after Hurricane Andrew. From a conceptual model of the effects of traumatic events, 442 children were evaluated 3, 7, and 10 months postdisaster with respect to (a) their exposure to traumatic events during and after the disaster, (b) their preexisting demographic characteristics, (c) the occurrence of major life stressors, (d) the availability of social support, and (e) the type of coping strategies used to cope with disaster-related distress. Although symptoms of posttraumatic stress disorder (PTSD) declined over time, a substantial level of symptomatology was observed up to 10 months after the disease. All 5 factors in the conceptual model were predictive of children's PTSD symptoms 7 and 10 months postdisaster. Findings are discussed in terms of the potential utility of the model for organizing thinking about factors that predict the emergence and persistence of PTSD symptoms in children.

  12. Quantized Brans-Dicke theory: Phase transition, strong coupling limit, and general relativity

    NASA Astrophysics Data System (ADS)

    Pal, Sridip

    2016-10-01

    We show that Friedmann-Robertson-Walker geometry with a flat spatial section in quantized (Wheeler deWitt quantization) Brans-Dicke (BD) theory reveals a rich phase structure owing to anomalous breaking of a classical symmetry, which maps the scale factor a ↦λ a for some constant λ . In the weak coupling (ω ) limit, the theory goes from a symmetry preserving phase to a broken phase. The existence of a phase boundary is an obstruction to another classical symmetry [see V. Faraoni, Phys. Rev. D 59, 084021 (1999).] (which relates two BD theories with different couplings) admitted by BD theory with scale invariant matter content, i.e., Tμμ=0 . Classically, this prohibits the BD theory from reducing to general relativity (GR) for scale invariant matter content. We show that a strong coupling limit of both BD and GR preserves the symmetry involving the scale factor. We also show that with scale invariant matter content (radiation, i.e., P =1/3 ρ ), the quantized BD theory does reduce to GR as ω →∞ , which is in sharp contrast to classical behavior. This is a first known illustration of a scenario where quantized BD theory provides an example of anomalous symmetry breaking and resulting binary phase structure. We make a conjecture regarding the strong coupling limit of the BD theory in a generic scenario.

  13. Non-destructively probing matter-photon correlations described by the Dicke-Hubbard Lattice model

    NASA Astrophysics Data System (ADS)

    Rajaram, Sara; Trivedi, Nandini

    2012-02-01

    The Dicke-Hubbard Lattice (DHL) Hamiltonian is a prototypical system to study photon matter entanglement across a symmetry breaking quantum phase transition in the matter subsystem. The model describes a cavity containing a periodic lattice, with a single mode photon field delocalized across the cavity. Like the Bose-Hubbard model, the Hamiltonian includes on-site repulsion between atoms and nearest neighbor hopping of an atom from one site to another. In addition, matter-light coupling in the DHL model can excite an atom to a higher band by absorbing a photon and the reverse process. We focus on the DHL model in a region of parameter space in which light is ``superradiant'' and matter is either a Mott-insulator or superfluid of both bands. Through mean field, exact diagonalization, and quantum Monte Carlo calculations we examine photon statistics across the matter quantum phase transition in order to elucidate how the photon statistics reflect the matter correlations. Doing so provides a novel technique to non-destructively probe the Mott-insulator to superfluid phase transition.

  14. Dilatonic Brans-Dicke Anisotropic Collapsing Fluid Sphere And de Broglie Quantum Wave Motion

    NASA Astrophysics Data System (ADS)

    Ghaffarnejad, Hossein

    2016-08-01

    Two dimensional (2D) analogue of vacuum sector of the Brans Dicke (BD) gravity [1] is studied to obtain dynamics of anisotropic spherically symmetric perfect fluid. Our obtained static solutions behave as dark matter with state equation but in non-static regimes behave as regular perfect fluid with barotropic index ϒ > 0. Positivity property of total mass of the fluid causes that the BD parameter to be ω >2/3 and/or ω < —1. Locations of the event and apparent horizons of the collapsing fluid are obtained in its static regime. In case ω > 0 the apparent horizon is covered by event horizon where the cosmic censorship hypothesis is still valid. According to the model [1], we obtain de Broglie pilot wave of our metric solution which describes particles ensemble which become distinguishable via different values of ω. Incident current density of particles ensemble on the horizons is evaluated which describe the ‘Hawking radiation’. The de Brogle-Bohm quantum potential effect is calculated also on the event (apparent) horizon which is independent (dependent) to values of ω.

  15. Gravity-Driven Acceleration and Kinetic Inflation in Noncommutative Brans-Dicke Setting

    NASA Astrophysics Data System (ADS)

    Rasouli, S. M. M.; Vargas Moniz, Paulo

    By assuming the spatially flat FLRW line-element and employing the Hamiltonian formalism, a noncommutative (NC) setting of the Brans-Dicke (BD) theory is introduced. We investigate gravity-driven acceleration and kinetic inflation in this NC BD cosmology. Despite to the commutative case, in which both the scale factor and BD scalar field are obtained in power-law forms (in terms of the cosmic time), in our herein NC model, we see that the power-law scalar factor is multiplied by a dynamical exponential warp factor. This warp factor depends on not only the noncommutative parameter but also the momentum conjugate associated to the BD scalar field. For very small values of this parameter, we obtain an appropriate inflationary solution, which can overcome problems within standard BD cosmology in a more efficient manner. Moreover, we see that a graceful exit from an early acceleration epoch towards a decelerating radiation epoch is provided. For late times, due to the presence of the NC parameter, we obtain a zero acceleration epoch, which can be interpreted as the coarse-grained explanation.

  16. Health assessment for William Dick Lagoons, Honeybrook, Pennsylvania, Region 3. CERCLIS No. PAD980537773. Preliminary report

    SciTech Connect

    Not Available

    1988-09-30

    The William Dick Lagoon site consists of three unlined lagoons (approximately 2.5 acres total area) which previously contained over four million gallons of rinse water from cleaning chemical tank trailers. In 1970, two of the lagoons breached and released approximately 300,000 gallons of wastewater into the nearby area and a small tributary. Trichloroethylene, toluene, 4,4-DDE, and polynuclear aromatic hydrocarbons have been reported in the soil on the site. Trichloroethylene was detected in a nearby spring, previously used as a water source by a small number of residents. Potential human exposure pathways include ingestion of contaminated water, dermal exposure to contaminated water and soil, and inhalation of contaminated dust and organics in the contaminated groundwater. The site is considered to be of potential public health concern because of the risk to human health caused by the possibility of exposure to hazardous substances. However, it does not appear that a human population is currently exposed to site contaminants at levels of health concern.

  17. Real-time observation of fluctuations at the driven-dissipative Dicke phase transition

    PubMed Central

    Brennecke, Ferdinand; Mottl, Rafael; Baumann, Kristian; Landig, Renate; Donner, Tobias; Esslinger, Tilman

    2013-01-01

    We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose–Einstein condensate to the light field of a high-finesse optical cavity. The cavity provides a natural dissipation channel, which gives rise to vacuum-induced fluctuations and allows us to observe density fluctuations of the gas in real-time. We monitor the divergence of these fluctuations over two orders of magnitude while approaching the phase transition, and observe a behavior that deviates significantly from that expected for a closed system. A correlation analysis of the fluctuations reveals the diverging time scale of the atomic dynamics and allows us to extract a damping rate for the external degree of freedom of the atoms. We find good agreement with our theoretical model including dissipation via both the cavity field and the atomic field. Using a dissipation channel to nondestructively gain information about a quantum many-body system provides a unique path to study the physics of driven-dissipative systems. PMID:23818599

  18. Critical exponent of a quantum-noise-driven phase transition: The open-system Dicke model

    SciTech Connect

    Nagy, D.; Szirmai, G.; Domokos, P.

    2011-10-15

    The quantum phase transition of the Dicke model has been observed recently in a system formed by motional excitations of a laser-driven Bose-Einstein condensate coupled to an optical cavity [Baumann et al., Nature (London) 464, 1301 (2010)]. The cavity-based system is intrinsically open: photons leak out of the cavity where they are detected. Even at zero temperature, the continuous weak measurement of the photon number leads to an irreversible dynamics toward a steady state. In the framework of a generalized Bogoliubov theory, we show that the steady state exhibits a dynamical quantum phase transition. We find that the critical point and the mean field are only slightly modified with respect to the phase transition in the ground state. However, the critical exponents of the singular quantum correlations are significantly different in the two cases. There is also a drastic modification of the atom-field entanglement, since the divergence of the logarithmic negativity of the ground state at the critical point is suppressed and a finite entanglement is found in the steady state.

  19. Critical exponent of a quantum-noise-driven phase transition: The open-system Dicke model

    NASA Astrophysics Data System (ADS)

    Nagy, D.; Szirmai, G.; Domokos, P.

    2011-10-01

    The quantum phase transition of the Dicke model has been observed recently in a system formed by motional excitations of a laser-driven Bose-Einstein condensate coupled to an optical cavity [Baumann , Nature (London)NATUAS0028-083610.1038/nature09009 464, 1301 (2010)]. The cavity-based system is intrinsically open: photons leak out of the cavity where they are detected. Even at zero temperature, the continuous weak measurement of the photon number leads to an irreversible dynamics toward a steady state. In the framework of a generalized Bogoliubov theory, we show that the steady state exhibits a dynamical quantum phase transition. We find that the critical point and the mean field are only slightly modified with respect to the phase transition in the ground state. However, the critical exponents of the singular quantum correlations are significantly different in the two cases. There is also a drastic modification of the atom-field entanglement, since the divergence of the logarithmic negativity of the ground state at the critical point is suppressed and a finite entanglement is found in the steady state.

  20. Non-singular Brans–Dicke collapse in deformed phase space

    SciTech Connect

    Rasouli, S.M.M.; Ziaie, A.H.; Jalalzadeh, S.; Moniz, P.V.

    2016-12-15

    We study the collapse process of a homogeneous perfect fluid (in FLRW background) with a barotropic equation of state in Brans–Dicke (BD) theory in the presence of phase space deformation effects. Such a deformation is introduced as a particular type of non-commutativity between phase space coordinates. For the commutative case, it has been shown in the literature (Scheel, 1995), that the dust collapse in BD theory leads to the formation of a spacetime singularity which is covered by an event horizon. In comparison to general relativity (GR), the authors concluded that the final state of black holes in BD theory is identical to the GR case but differs from GR during the dynamical evolution of the collapse process. However, the presence of non-commutative effects influences the dynamics of the collapse scenario and consequently a non-singular evolution is developed in the sense that a bounce emerges at a minimum radius, after which an expanding phase begins. Such a behavior is observed for positive values of the BD coupling parameter. For large positive values of the BD coupling parameter, when non-commutative effects are present, the dynamics of collapse process differs from the GR case. Finally, we show that for negative values of the BD coupling parameter, the singularity is replaced by an oscillatory bounce occurring at a finite time, with the frequency of oscillation and amplitude being damped at late times.

  1. Non-singular Brans-Dicke collapse in deformed phase space

    NASA Astrophysics Data System (ADS)

    Rasouli, S. M. M.; Ziaie, A. H.; Jalalzadeh, S.; Moniz, P. V.

    2016-12-01

    We study the collapse process of a homogeneous perfect fluid (in FLRW background) with a barotropic equation of state in Brans-Dicke (BD) theory in the presence of phase space deformation effects. Such a deformation is introduced as a particular type of non-commutativity between phase space coordinates. For the commutative case, it has been shown in the literature (Scheel, 1995), that the dust collapse in BD theory leads to the formation of a spacetime singularity which is covered by an event horizon. In comparison to general relativity (GR), the authors concluded that the final state of black holes in BD theory is identical to the GR case but differs from GR during the dynamical evolution of the collapse process. However, the presence of non-commutative effects influences the dynamics of the collapse scenario and consequently a non-singular evolution is developed in the sense that a bounce emerges at a minimum radius, after which an expanding phase begins. Such a behavior is observed for positive values of the BD coupling parameter. For large positive values of the BD coupling parameter, when non-commutative effects are present, the dynamics of collapse process differs from the GR case. Finally, we show that for negative values of the BD coupling parameter, the singularity is replaced by an oscillatory bounce occurring at a finite time, with the frequency of oscillation and amplitude being damped at late times.

  2. Shear-free axial model in massive Brans-Dicke gravity

    NASA Astrophysics Data System (ADS)

    Sharif, M.; Manzoor, Rubab

    2017-01-01

    This paper explores the influences of dark energy on the shear-free axially symmetric evolution by considering self-interacting Brans-Dicke gravity as a dark energy candidate. We describe energy source of the model and derive all the effective dynamical variables as well as effective structure scalars. It is found that scalar field is one of the sources of anisotropy and dissipation. The resulting effective structure scalars help to study the dynamics associated with dark energy in any axial configuration. In order to investigate shear-free evolution, we formulate a set of governing equations along with heat transport equation. We discuss consequences of shear-free condition upon different SBD fluid models like dissipative non-geodesic and geodesic models. For dissipative non-geodesic case, the rotational distribution turns out to be the necessary and sufficient condition for radiating model. The dissipation depends upon inhomogeneous expansion. The geodesic model is found to be irrotational and non-radiating. The non-dissipative geodesic model leads to FRW model for positive values of the expansion parameter.

  3. Expanding (n+1)-dimensional wormhole solutions in Brans-Dicke cosmology

    SciTech Connect

    Ebrahimi, E.; Riazi, N.

    2010-01-15

    We have obtained two classes of (n+1)-dimensional wormhole solutions using a traceless energy-momentum tensor in the Brans-Dicke theory of gravity. The first class contains wormhole solutions in an open geometry, while the second contains wormhole solutions in both open and closed universes. In addition to wormhole geometries, naked singularities and maximally symmetric space-time also appear among the solutions as special cases. We have also considered the traversability of the wormhole solutions and have shown that they are indeed traversable. Finally, we have discussed the energy-momentum tensor which supports this geometry and have checked for the energy conditions. We have found that wormhole solutions in the first class of solutions violate the weak energy condition (WEC). In the second class, the wormhole geometries in a closed universe do violate the WEC, but in an open universe with a suitable choice of constants the supporting matter energy-momentum tensor can satisfy the WEC. However, even in this case the full effective energy-momentum tensor including the scalar field and the matter energy-momentum tensor still violates the WEC.

  4. Quantum signature of chaos and thermalization in the kicked Dicke model.

    PubMed

    Ray, S; Ghosh, A; Sinha, S

    2016-09-01

    We study the quantum dynamics of the kicked Dicke model (KDM) in terms of the Floquet operator, and we analyze the connection between chaos and thermalization in this context. The Hamiltonian map is constructed by suitably taking the classical limit of the Heisenberg equation of motion to study the corresponding phase-space dynamics, which shows a crossover from regular to chaotic motion by tuning the kicking strength. The fixed-point analysis and calculation of the Lyapunov exponent (LE) provide us with a complete picture of the onset of chaos in phase-space dynamics. We carry out a spectral analysis of the Floquet operator, which includes a calculation of the quasienergy spacing distribution and structural entropy to show the correspondence to the random matrix theory in the chaotic regime. Finally, we analyze the thermodynamics and statistical properties of the bosonic sector as well as the spin sector, and we discuss how such a periodically kicked system relaxes to a thermalized state in accordance with the laws of statistical mechanics.

  5. Quantum signature of chaos and thermalization in the kicked Dicke model

    NASA Astrophysics Data System (ADS)

    Ray, S.; Ghosh, A.; Sinha, S.

    2016-09-01

    We study the quantum dynamics of the kicked Dicke model (KDM) in terms of the Floquet operator, and we analyze the connection between chaos and thermalization in this context. The Hamiltonian map is constructed by suitably taking the classical limit of the Heisenberg equation of motion to study the corresponding phase-space dynamics, which shows a crossover from regular to chaotic motion by tuning the kicking strength. The fixed-point analysis and calculation of the Lyapunov exponent (LE) provide us with a complete picture of the onset of chaos in phase-space dynamics. We carry out a spectral analysis of the Floquet operator, which includes a calculation of the quasienergy spacing distribution and structural entropy to show the correspondence to the random matrix theory in the chaotic regime. Finally, we analyze the thermodynamics and statistical properties of the bosonic sector as well as the spin sector, and we discuss how such a periodically kicked system relaxes to a thermalized state in accordance with the laws of statistical mechanics.

  6. Physical symptoms of chronic fatigue syndrome are exacerbated by the stress of Hurricane Andrew.

    PubMed

    Lutgendorf, S K; Antoni, M H; Ironson, G; Fletcher, M A; Penedo, F; Baum, A; Schneiderman, N; Klimas, N

    1995-01-01

    This study examined the effects of Hurricane Andrew on physical symptoms and functional impairments in a sample of chronic fatigue syndrome (CFS) patients residing in South Florida. In the months after Hurricane Andrew (September 15-December 31, 1992), 49 CFS patients were assessed for psychosocial and physical functioning with questionnaires, interviews, and physical examinations. This sample was made up of 25 CFS patients living in Dade county, a high impact area, and 24 patients in Broward and Palm Beach counties, areas less affected by the hurricane. Based on our model for stress-related effects on CFS, we tested the hypothesis that the patients who had the greatest exposure to this natural disaster would show the greatest exacerbation in CFS symptoms and related impairments in activities of daily living (illness burden). In support of this hypothesis, we found that the Dade county patients showed significant increases in physician-rated clinical relapses and exacerbations in frequency of several categories of self-reported CFS physical symptoms as compared to the Broward/Palm Beach county patients. Illness burden, as measured on the Sickness Impact Profile, also showed a significant increase in the Dade county patients. Although extent of disruption due to the storm was a significant factor in predicting relapse, the patient's posthurricane distress response was the single strongest predictor of the likelihood and severity of relapse and functional impairment. Additionally, optimism and social support were significantly associated with lower illness burden after the hurricane, above and beyond storm-related disruption and distress responses. These findings provide information on the impact of environmental stressors and psychosocial factors in the exacerbation of CFS symptoms.

  7. Posttraumatic stress symptoms, intrusive thoughts, loss, and immune function after Hurricane Andrew.

    PubMed

    Ironson, G; Wynings, C; Schneiderman, N; Baum, A; Rodriguez, M; Greenwood, D; Benight, C; Antoni, M; LaPerriere, A; Huang, H S; Klimas, N; Fletcher, M A

    1997-01-01

    To examine the impact of and relationship between exposure to Hurricane Andrew, a severe stressor, posttraumatic stress symptoms and immune measures. Blood draws and questionnaires were taken from community volunteer subjects living in the damaged neighborhoods between 1 and 4 months after the Hurricane. The sample exhibited high levels of posttraumatic stress symptoms by questionnaire (33% overall; 76% with at least one symptom cluster), and 44% scored in the high impact range on the Impact of Events (IES) scale. A substantial proportion of variance in posttraumatic stress symptoms could be accounted for by four hurricane experience variables (damage, loss, life threat, and injury), with perceived loss being the highest correlate. Of the five immune measures studied Natural Killer Cell Cytotoxicity (NKCC) was the only measure that was meaningfully related (negatively) to both damage and psychological variables (loss, intrusive thoughts, and posttraumatic stress disorder (PTSD). White blood cell counts (WBCs) were significantly positively related with the degree of loss and PTSD experienced. Both NKCC (lower) and WBC were significantly related to retrospective self-reported increase of somatic symptoms after the hurricane. Overall, the community sample was significantly lower in NKCC, CD4 and CD8 number, and higher in NK cell number compared to laboratory controls. Finally, evidence was found for new onset of sleep problems as a mediator of the posttraumatic symptom-NKCC relationship. Several immune measures differed from controls after Hurricane Andrew. Negative (intrusive) thoughts and PTSD were related to lower NKCC. Loss was a key correlate of both posttraumatic symptoms and immune (NKCC, WBC) measures.

  8. Hurricane Andrew Damage in Relation to Wood Decay Fungi and Insects in Bottomland Hardwoods of the Atchafalaya Basin, Louisiana

    Treesearch

    Theodor D. Leininger; A. Dan Wilson; Donald G. Lester

    1997-01-01

    Hurricane Andrew caused damage to more than 780 sq.km of bottomland hardwood and cypress-tupelo forests in the Atchafalaya Basin of Louisiana in August 1992. Trees in bottomland hardwood sites were examined, in early May 1994, for signs and symptoms of wood decay fungi, and for insect damage, ostensibly present before the hurricane, which may have predisposed trees to...

  9. Climatic summaries and documentation for the primary meteorological station, H.J. Andrews Experimental Forest, 1972 To 1984.

    Treesearch

    Frederick A. Bierlmaler; Arthur. McKee

    1989-01-01

    This report describes the primary meteorological station at the H.J. Andrews Experimental Forest (elev. 426 m, lat. 44°15' N., long. 122°10' W.) in the Willamette National Forest, the automatic digital data logger, sensors, and data-processing procedures used in measuring air temperature, dewpoint temperature, windspeed, precipitation, and solar radiation....

  10. 78 FR 27126 - East Bay, St. Andrews Bay and the Gulf of Mexico at Tyndall Air Force Base, Florida; Restricted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-09

    ... Department of the Army, Corps of Engineers 33 CFR Part 334 East Bay, St. Andrews Bay and the Gulf of Mexico... several areas where the lack of security or lack of restriction on access to these areas leaves Tyndall... Gulf of Mexico and Apalachicola Bay south of Apalachicola, Fla., Drone Recovery Area, Tyndall Air Force...

  11. Invertebrates of The H.J. Andrews Experimental Forest, Western Cascades, Oregon: III. The Orthoptera (Grasshoppers and Crickets).

    Treesearch

    David C. Lightfoot

    1986-01-01

    An inventory of Orthoptera (grasshoppers and crickets) at the H.J. Andrews Experimental Forest, near Blue River, Oregon, was conducted to determine the species present and ecological relationships. A key for identification and an annotated list are presented. From qualitative assessments of successional habitat relationships, generalized species associations of forest...

  12. Invertebrates of The H.J. Andrews Experimental Forest, Western Cascade Mountains, Oregon: IV. The Oribatid Mites (Acari: Cryptostigmata).

    Treesearch

    Andrew Moldenke; Becky. Fichter

    1988-01-01

    A fully illustrated key is presented for identifying genera of oribatid mites known from or suspected of occurring in the Pacific Northwest. The manual includes an introduction detailing sampling methodology; an illustrated glossary of all terminology used; two color plates of all taxa from the H. J. Andrews Experimental Forest; a diagrammatic key to the 16 major...

  13. Invertebrates of the H.J. Andrews Experimental Forest, western Cascades, Oregon II. an annotated checklist of caddisflies (Trichoptera)

    Treesearch

    N.H. Anderson; G.M. Cooper; D.G Denning

    1982-01-01

    At least 99 species, representing 14 families of Trichoptera, are recorded from the H.J. Andrews Experimental Forest, near Blue River, Oregon. The collecting sites include a wide diversity of environmental conditions in a 6000-hectare watershed of the western Cascade Range (from 400 to 1 630 meters in altitude and from 1st- to 7th-order streams).

  14. Should Community College Be Free? Forum. "Education Next" Talks with Sara Goldrick-Rab and Andrew P. Kelly

    ERIC Educational Resources Information Center

    Goldrick-Rab, Sara; Kelly, Andrew P.

    2016-01-01

    In this article, "Education Next" talks with Sara Goldrick-Rab and Andrew Kelly. President Obama's proposal for tuition-free community college, seems to have laid down a marker for the Democratic Party. Vermont senator Bernie Sanders is touting his plan for free four-year public college on the primary trail; Massachusetts senator…

  15. Invertebrates of The H.J. Andrews Experimental Forest, Western Cascades, Oregon: I. An annotated checklist of fleas.

    Treesearch

    Robert E. Lewis; Chris. Maser

    1981-01-01

    During a trapping survey of small mammals (approximately 3,000 individuals), species of fleas (1,632 specimens) were collected in the H.J. Andrews Experimental Forest, Western Cascades, Oregon. Host mammals were represented by 15 species—6 insectivores and 9 rodents captured from June through September. The collections extend our knowledge of the fauna of Oregon.

  16. Religious Literacy or Spiritual Awareness? Comparative Critique of Andrew Wright's and David Hay's Approaches to Spiritual Education

    ERIC Educational Resources Information Center

    Filipsone, Anta

    2009-01-01

    On the basis of a comparison of the educational approaches of Andrew Wright and David Hay this paper illustrates the persisting problem of dichotomising cognitive and trans-cognitive aspects of spiritual development and education. Even though both Wright and Hay speak of the same topic--spirituality and spiritual education--they define these terms…

  17. Should Community College Be Free? Forum. "Education Next" Talks with Sara Goldrick-Rab and Andrew P. Kelly

    ERIC Educational Resources Information Center

    Goldrick-Rab, Sara; Kelly, Andrew P.

    2016-01-01

    In this article, "Education Next" talks with Sara Goldrick-Rab and Andrew Kelly. President Obama's proposal for tuition-free community college, seems to have laid down a marker for the Democratic Party. Vermont senator Bernie Sanders is touting his plan for free four-year public college on the primary trail; Massachusetts senator…

  18. [The Andrew Heiskell Library for the Blind and Physically Handicapped.] A Library with a Difference. Projects and Experiments.

    ERIC Educational Resources Information Center

    Jarkon, Joe; Fitzpatrick, Vicki, Ed.

    This publication describes the Andrew Heiskell Library for the Blind and Physically Handicapped, a regional library for the National Library Service (NLS) example of the creative use of physical space and innovative technology. The publication focuses on the materials-handling system designed for the new facility, including system design…

  19. The Psychological Effects of Hurricane Andrew on Ethnic Minority and Caucasian Children and Adolescents: A Case Study.

    ERIC Educational Resources Information Center

    Jones, Russell T.; Frary, Robert; Cunningham, Phillippe; Weddle, J. David; Kaiser, Lisa

    2001-01-01

    Several measures of children's reactions to disasters were employed with 212 elementary and middle school students 6 months after experiencing Hurricane Andrew. Higher levels of intrusive symptomatology were found for girls and for elementary school children. Discusses lack of findings concerning race and implications for future research.…

  20. Dicke coupling by feasible local measurements at the superradiant quantum phase transition.

    PubMed

    Bina, M; Amelio, I; Paris, M G A

    2016-05-01

    We address characterization of many-body superradiant systems and establish a fundamental connection between quantum criticality and the possibility of locally estimating the coupling constant, i.e., extracting its value by probing only a portion of the whole system. In particular, we consider Dicke-like superradiant systems made of an ensemble of two-level atoms interacting with a single-mode radiation field at zero effective temperature, and address estimation of the coupling by measurements performed only on radiation. At first, we obtain analytically the quantum Fisher information (QFI) and show that optimal estimation of the coupling may be achieved by tuning the frequency of the radiation field to drive the system toward criticality. The scaling behavior of the QFI at the critical point is obtained explicitly upon exploiting the symplectic formalism for Gaussian states. We then analyze the performances of feasible detection schemes performed only on the radiation subsystem, namely homodyne detection and photon counting, and show that the corresponding Fisher informations (FIs) approach the global QFI in the critical region. We thus conclude that criticality is a twofold resource. On the one hand, global QFI diverges at the critical point, i.e., the coupling may be estimated with the arbitrary precision. On the other hand, the FIs of feasible local measurements (which are generally smaller than the QFI out of the critical region), show the same scaling of the global QFI; i.e., optimal estimation of coupling may be achieved by locally probing the system, despite its strongly interacting nature.

  1. Dicke coupling by feasible local measurements at the superradiant quantum phase transition

    NASA Astrophysics Data System (ADS)

    Bina, M.; Amelio, I.; Paris, M. G. A.

    2016-05-01

    We address characterization of many-body superradiant systems and establish a fundamental connection between quantum criticality and the possibility of locally estimating the coupling constant, i.e., extracting its value by probing only a portion of the whole system. In particular, we consider Dicke-like superradiant systems made of an ensemble of two-level atoms interacting with a single-mode radiation field at zero effective temperature, and address estimation of the coupling by measurements performed only on radiation. At first, we obtain analytically the quantum Fisher information (QFI) and show that optimal estimation of the coupling may be achieved by tuning the frequency of the radiation field to drive the system toward criticality. The scaling behavior of the QFI at the critical point is obtained explicitly upon exploiting the symplectic formalism for Gaussian states. We then analyze the performances of feasible detection schemes performed only on the radiation subsystem, namely homodyne detection and photon counting, and show that the corresponding Fisher informations (FIs) approach the global QFI in the critical region. We thus conclude that criticality is a twofold resource. On the one hand, global QFI diverges at the critical point, i.e., the coupling may be estimated with the arbitrary precision. On the other hand, the FIs of feasible local measurements (which are generally smaller than the QFI out of the critical region), show the same scaling of the global QFI; i.e., optimal estimation of coupling may be achieved by locally probing the system, despite its strongly interacting nature.

  2. Minimally interacting holographic dark energy model in Bianchi type-III universe in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Umadevi, S.; Ramesh, G.

    2015-10-01

    A spatially homogeneous and anisotropic Bianchi type-III universe filled with two minimally interacting fields is investigated: matter and holographic dark energy components in the framework of the Brans-Dicke (Phys. Rev. 124:925, 1961) theory of gravitation. To obtain determinate solutions of the field equations we have used (i) scalar expansion proportional to the shear scalar and (ii) special law of variation for Hubble's parameter proposed by Berman (Nuovo Comento B 74:182, 1983). Some physical and kinematical properties of the model are also discussed.

  3. Genomewide scan for adaptive differentiation along altitudinal gradient in the Andrew's toad Bufo andrewsi.

    PubMed

    Guo, Baocheng; Lu, Di; Liao, Wen Bo; Merilä, Juha

    2016-08-01

    Recent studies of humans, dogs and rodents have started to discover the genetic underpinnings of high altitude adaptations, yet amphibians have received little attention in this respect. To identify possible signatures of adaptation to altitude, we performed a genome scan of 15 557 single nucleotide polymorphisms (SNPs) obtained with restriction site-associated DNA sequencing of pooled samples from 11 populations of Andrew's toad (Bufo andrewsi) from the edge of the Tibetan Plateau, spanning an altitudinal gradient from 1690 to 2768 m.a.s.l. We discovered significant geographic differentiation among all sites, with an average FST   = 0.023 across all SNPs. Apart from clear patterns of isolation by distance, we discovered numerous outlier SNPs showing strong associations with variation in altitude (1394 SNPs), average annual temperature (1859 SNPs) or both (1051 SNPs). Levels and patterns of genetic differentiation in these SNPs were consistent with the hypothesis that they have been subject to directional selection and reflect adaptation to altitudinal variation among the study sites. Genes with footprints of selection were significantly enriched in binding and metabolic processes. Several genes potentially related to high altitude adaptation were identified, although the identity and functional significance of most genomic targets of selection remain unknown. In general, the results provide genomic support for results of earlier common garden and low coverage genetic studies that have uncovered substantial adaptive differentiation along altitudinal and latitudinal gradients in amphibians.

  4. Wind damage effects of Hurricane Andrew on mangrove communities along the southwest coast of Florida, USA

    USGS Publications Warehouse

    Doyle, T.W.; Smith, T. J.; Robblee, M.B.

    1995-01-01

    On August 24, 1992, Hurricane Andrew downed and defoliated an extensive swath of mangrove trees across the lower Florida peninsula. Permanent field sites were established to assess the extent of forest damage and to monitor the rate and process of forest recovery. Canopy trees suffered the highest mortality particularly for sites within and immediately north of the storm's eyewall. The type and extent of site damage, windthrow, branch loss, and defoliation generally decreased exponentially with increasing distance from the storm track. Forest damage was greater for sites in the storm's right quadrant than in the left quadrant tor the same given distance from the storm center. Stand exposure, both horizontally and vertically, increased the susceptibility and probability of forest damage and accounted for much of the local variability. Slight species differences were found. Laguncularia racemosa exceeded Avicennia germinans and Rhizophora mangle in damage tendency under similar wind conditions. Azimuths of downed trees were strongly correlated with maximum wind speed and vector based on a hurricane simulation of the storm. Lateral branch loss and leaf defoliation on sites without windthrow damage indicated a degree of crown thinning and light penetration equivalent to treefall gaps under normally intact forest conditions. Mangrove species and forests are susceptible to catastrophic disturbance by hurricanes; the impacts of which are significant to changes in forest structure and function.

  5. The post-disaster negative health legacy: pregnancy outcomes in Louisiana after Hurricane Andrew.

    PubMed

    Antipova, Anzhelika; Curtis, Andrew

    2015-10-01

    Disasters and displacement increasingly affect and challenge urban settings. How do pregnant women fare in the aftermath of a major disaster? This paper investigates the effect of pregnancies in disaster situations. The study tests a hypothesis that pregnant women residing in hurricane-prone areas suffer higher health risks. The setting is Louisiana in the Gulf Coast, United States, a state that continually experiences hurricane impacts. The time period for the analysis is three years following the landfall of Hurricane Andrew in 1992. We analysed low birth weight and preterm deliveries before and after landfall, as a whole and by race. Findings support an association between hazards and health of a community and indicate that pregnant women in the affected area, irrespective of race, are more likely to experience preterm deliveries compared to pre-event births. Results suggest there is a negative health legacy impact in Louisiana as a result of hurricane landfall. © 2015 The Author(s). Disasters © Overseas Development Institute, 2015.

  6. Simulation of Water Balance and Forest Treatment Effects at the H.J. Andrews Experimental Forest

    SciTech Connect

    Waichler, Scott R.; Wemple, Beverley C.; Wigmosta, Mark S.

    2005-10-30

    The watershed model DHSVM was applied to the small watersheds WS1,2,3 in H.J. Andrews Experimental Forest (HJA), Oregon and tested for skill in simulating observed forest treatment effects on streamflow. These watersheds in the rain-snow transition zone underwent road and clearcut treatments during 1959-66 and subsequent natural regeneration. DHSVM was applied with 10 m and 1 hr resolution to 1958-98, most of the period of record. Water balance for old-growth WS2 indicated that evapotranspiration and streamflow were unlikely to be the only loss terms, and groundwater recharge was included to account for about 12% of precipitation; this term was assumed zero in previous studies. After limited calibration, overall efficiency in simulating hourly streamflow exceeded 0.7, and mean annual error was less than 10%. Model skill decreased at the margins, with overprediction of low flows and underprediction of high flows. However, statistical analyses of simulated and observed peakflows yielded similar characterizations of treatment effects. Primary simulation weaknesses were snowpack accumulation, snowmelt under rain-on-snow conditions, and production of quickflow. This challenging test of DHSVM moved the model closer to a practical tool for forest management.

  7. Storm-tide elevations produced by Hurricane Andrew along the southern Florida coasts, August 24, 1992

    USGS Publications Warehouse

    Murray, Mitchell H.

    1994-01-01

    On August 24, 1992, Hurricane Andrew crossed southern peninsular Florida. The combined effects of storm surge from the hurricane and astronomical tide, referred to as storm tide, caused flooding over a large part of southern Florida. Subsequent to the flooding, many high-water marks were identified, described, and surveyed along the south- eastern coast of Florida (Miami to Key Largo) and at selected areas along the southwestern coast of Florida (Flamingo to Goodland). Descriptions of these 336 high-water makrs are presented in tabular form in this report and their locations are plotted on nineteen 7.5-minute topographic quadrangle maps. For the southeastern coast, north-south profiles of the high-water makrs along the outher and inner barrier islands and the western shoreline of Biscayne Bay are presented. Average storm-tide elevations (relative to sea level) ranged from 4 to 6 feet in northern Biscayne Bay, were as much as 17 feet on the western shoreline near the center of the bay and ranged from 3 to 6 feet in southern Biscayne Bay and Barnes Sound. Storm-tide elevations along the southwestern coast ranged from 4 to 5 feet at Flamingo and 5 to 7 feet at Goodland in the Ten Thousand Islands area.

  8. Analysis of medical treatment at a field hospital following Hurricane Andrew, 1992.

    PubMed

    Alson, R; Alexander, D; Leonard, R B; Stringer, L W

    1993-11-01

    To determine what medical care was required of a special operations response team by a community devastated by a major hurricane. Retrospective analysis of 1,544 patient encounter forms generated at a field hospital set up in Homestead, Florida, after Hurricane Andrew in August 1992 and staffed by the special operations response team from Forsyth County, North Carolina. All persons presenting for treatment. One thousand two hundred three adult patients and 336 pediatric patients were seen by the special operations response team. Only five of the injuries treated were due directly to the hurricane, whereas 285 of the treated injuries were sustained during clean-up activities. Most of the care provided was routine medical care denied the citizens due to the loss of their physicians' offices and clinics. Supplies of tetanus toxoid, antibiotics, and insulin were depleted in 24 hours. Resupplying these items and acquiring other medication to refill prescriptions constituted a pressing problem. The primary function of medical personnel responding to an area hit by a major hurricane will be to provide general medical care. Any trauma encountered will be primarily due to clean-up activities and not due to the hurricane itself. Responding medical personnel should plan on providing their own food and water for the first 72 hours and be well stocked with antibiotics, tetanus toxoid, and insulin.

  9. Long-term effects of Hurricane Andrew: revisiting mental health indicators.

    PubMed

    McDonnell, S; Troiano, R P; Barker, N; Noji, E; Hlady, W G; Hopkins, R

    1995-09-01

    Two population-based surveys of South Dade County, Florida, were conducted after Hurricane Andrew to compare hurricane-related symptoms of mental distress and describe the impact of mental health outreach teams. Households were selected by three-stage cluster sampling and findings from the two surveys, 13 months apart, were compared. Response rates were 75 per cent and 84 per cent. The prevalence of symptoms of mental distress decreased over time. However, in the households contacted by the teams (25 per cent of sample), the prevalence of symptoms (50 per cent) did not differ from households not contacted (43 per cent). Households contacted by teams that reported symptoms were just as likely to have been referred for help by the teams (72 per cent) as those without symptoms (68 per cent). Households reporting symptoms were equally likely to get counselling regardless of whether the teams visited. Mental health teams had no significant impact on mental health symptoms or the use of mental health services. Alternative approaches to mental health outreach teams need to be explored.

  10. Use of a modified cluster sampling method to perform rapid needs assessment after Hurricane Andrew.

    PubMed

    Hlady, W G; Quenemoen, L E; Armenia-Cope, R R; Hurt, K J; Malilay, J; Noji, E K; Wurm, G

    1994-04-01

    To rapidly obtain population-based estimates of needs in the early aftermath of Hurricane Andrew in South Florida. We used a modified cluster-sampling method (the Expanded Programme on Immunization [EPI] method) for three surveys. We selected a systematic sample of 30 quarter-mile square clusters for each survey and, beginning from a random start, interviewed members of seven consecutive occupied households in each cluster. Two surveys were of the most affected area (1990 population, 32,672) at three and ten days after the hurricane struck; one survey was of a less affected area (1990 population, 15,576) seven days after the hurricane struck. Results were available within 24 hours of beginning each survey. Initial findings emphasized the need for restoring utilities and sanitation and helped to focus medical relief on primary care and preventive services. The second survey of the most affected area showed improvement in the availability of food, water, electricity, and sanitation (P < or = .05). There was no evidence of disease outbreaks. For the first time, the EPI method provided population-based information to guide and evaluate relief operations after a sudden-impact natural disaster. An improvement over previous approaches, the EPI method warrants further evaluation as a needs assessment tool in acute disasters.

  11. The generation of internal waves on the continental shelf by Hurricane Andrew

    NASA Astrophysics Data System (ADS)

    Keen, Timothy R.; Allen, Susan E.

    2000-11-01

    Observed currents, temperature, and salinity from moored instruments on the Louisiana continental slope and shelf reveal multiple baroclinic oscillations during Hurricane Andrew in August 1992. These measurements are supplemented by numerical models in order to identify possible internal wave generation mechanisms. The Princeton Ocean Model is run with realistic topography, stratification, and wind forcing to extend the observations to Mississippi Canyon and other areas on the shelf. A two-layer isopycnal model is used with idealized topography and spatially uniform winds to isolate internal waves generated in and around the canyon. The combination of the observations and the results from the numerical models indicates several possible mechanisms for generating long internal waves: (1) near-inertial internal waves were generated across the slope and shelf by dislocation of the thermocline by the wind stress; (2) interaction of inertial flow with topography generated internal waves along the shelf break, which bifurcated into landward and seaward propagating phases; (3) downwelling along the coast depressed the thermocline; after downwelling relaxes, an internal wave front propagates as a Kelvin wave; and (4) Poincaré waves generated within Mississippi Canyon propagate seaward while being advected westward over the continental slope. These processes interact to produce a three-dimensional internal wave field, which was only partly captured by the observations.

  12. Weathering the storm: children's long-term recall of Hurricane Andrew.

    PubMed

    Fivush, Robyn; Sales, Jessica McDermott; Goldberg, Amy; Bahrick, Lorraine; Parker, Janat

    2004-01-01

    Children who experienced a highly stressful natural disaster, Hurricane Andrew, were interviewed within a few months of the event, when they were 3-4 years old, and again 6 years later, when they were 9-10 years old. Children were grouped into low, moderate, or high stress groups depending on the severity of the experienced storm. All children were able to recall this event in vivid detail 6 years later. In fact, children reported over twice as many propositions at the second interview as at the first. At the initial interview, children in the high stress group reported less information than children in the moderate stress group, but 6 years later, children in all three stress groups reported similar amounts of information. However children in the high stress group needed more questions and prompts than children in the other stress groups. Yet children in the high stress group also reported more consistent information between the two interviews, especially about the storm, than children in the other stress groups. Implications for children's developing memory of stressful events are discussed.

  13. Tilting at wave beams: a new perspective on the St. Andrew's Cross

    NASA Astrophysics Data System (ADS)

    Akylas, Triantaphyllos; Kataoka, Takeshi; Peacock, Thomas; Ghaemsaidi, Sasan; Holzenberger, Nils

    2017-04-01

    The generation of internal gravity waves by a vertically oscillating cylinder that is tilted to the horizontal in a uniformly stratified fluid of constant buoyancy frequency, is investigated. This variant of the widely-studied horizontal configuration-where a cylinder aligned horizontally with a plane of constant gravitational potential induces four wave beams forming a cross pattern known as St. Andrew's Cross-brings out certain unique features of radiated internal waves from a line source tilted to the horizontal. Specifically, for a given tilt of the cylinder, there is a cut-off frequency below which there is no longer a radiated wave field. Furthermore, three-dimensional effects due to the finite length of the cylinder, which are minor in the horizontal configuration, become a significant factor and eventually dominate the wave field as the cut-off frequency is approached. These results follow from simple kinematic analysis and are confirmed by supporting laboratory experiments. The kinematic analysis, moreover, suggests a resonance phenomenon near the cut-off frequency, where nonlinear and viscous effects are likely to play a part. This scenario is examined by an asymptotic model which predicts transfer of energy to a horizontal mean flow component. Experimental evidence of such an induced mean flow near cut-off is also presented.

  14. Evolution of Extended JC-Dicke Quantum Phase Transition with a Coupled Optical Cavity in Bose-Einstein Condensate System

    NASA Astrophysics Data System (ADS)

    Abdel-Rady, A. S.; Hassan, Samia S. A.; Osman, Abdel-Nasser A.; Salah, Ahmed

    2017-09-01

    In this paper, the extended Jaynes-Cummings-Dicke (JC-Dicke) model which describes a two-level atomic Bose-Einstein condensate (BEC) dispersive coupled to a high-finesse optical cavity is considered. The theoretical description of an effective Hamiltonian for BEC is introduced. The potential energy surface of the system is obtained from the direct product Heisenberg-Weyl (HW1) coherent states for the field and U(2) coherent states for the matter. Also, the variational energy is evaluated as the expectation value of the Hamiltonian for this state in the framework of mean-field approach. The quantum phase transitions (QPTs) and the Berry phase for this model are investigated numerically. We observed that the atom-atom interactions can strongly affect the quantum phase transition point. Furthermore, we noticed that the coherent atoms not only shift the phase transition point but also affect the macroscopic excitations in the superradiant phase. Moreover, it is found that the new phase transition occurs when the microwave amplitude changes. Some of the numerical results in this paper are agreement precisely with the results of our paper which has published in Int. J. Mod. Phys. B when we studied the same model using a different coherent state.

  15. Thermodynamics of topological black holes in Brans-Dicke gravity with a power-law Maxwell field

    NASA Astrophysics Data System (ADS)

    Zangeneh, M. Kord; Dehghani, M. H.; Sheykhi, A.

    2015-11-01

    In this paper, we present a new class of higher-dimensional exact topological black hole solutions of the Brans-Dicke theory in the presence of a power-law Maxwell field as the matter source. For this aim, we introduce a conformal transformation which transforms the Einstein-dilaton-power-law Maxwell gravity Lagrangian to the Brans-Dicke-power-law Maxwell theory one. Then, by using this conformal transformation, we obtain the desired solutions. Next, we study the properties of the solutions and conditions under which we have black holes. Interestingly enough, we show that there is a cosmological horizon in the presence of a negative cosmological constant. Finally, we calculate the temperature and charge and then by calculating the Euclidean action, we obtain the mass, the entropy and the electromagnetic potential energy. We find that the entropy does not respect the area law, and also the conserved and thermodynamic quantities are invariant under conformal transformation. Using these thermodynamic and conserved quantities, we show that the first law of black hole thermodynamics is satisfied on the horizon.

  16. Combining red and blue-detuned optical potentials to form a Lamb-Dicke trap for a single neutral atom.

    PubMed

    He, Xiaodong; Yu, Shi; Xu, Peng; Wang, Jin; Zhan, Mingsheng

    2012-02-13

    We propose and demonstrate a scheme for strong radial confinement of a single 87 Rb atom by a bichromatic far-off resonance optical dipole trap (BFORT). The BFORT is composed of a blue-detuned Laguerre-Gaussian LG01 beam and a red-detuned Gaussian beam. The atomic oscillation frequency measurement shows that the effective trapping dimension is much sharper than that from a diffraction-limited microscopic objective. Theory shows that the added scattering rate due to imposing blue-detuned light is negligible when the temperature of the single atoms is close to ground state temperature. By carrying out sub-Doppler cooling, the mean energy of single atoms trapped in the BFORT is reduced to 15 ± 1 μK. The corresponding mean quantum number of radial vibration n is about 1.65, which satisfies the Lamb-Dicke regime. We conclude that the BFORT is a suitable Lamb-Dicke trap for further cooling a single neutral atom down to the ground state and for further application in quantum information processing.

  17. Quantum phase transition and Berry phase of the Dicke model in the presence of the Stark-shift

    NASA Astrophysics Data System (ADS)

    Abdel-Rady, A. S.; Hassan, Samia. S. A.; Osman, Abdel-Nasser A.; Salah, Ahmed

    2017-05-01

    In this paper, we employ the energy surface method to study a system of a two-level atom Bose-Einstein condensate coupled to a high-finesse optical cavity interacting with a single-mode electromagnetic field in the presence of the Stark-shift. The energy surface, the Phase transitions and the Berry phase of the two-level atom in Dicke model are obtained. Employing the Holstein-Primakoff representation of the angular momentum Lie algebra, the coupling line separation of the normal phase and the superradiant phase which occurs in a collection of fluorescent emitters (such as atoms), between a state containing few electromagnetic excitations are studied and a mean field description of the Dicke model is presented. We notice that in the thermodynamic limit, the energy surface takes a simple form for a direct description of the phase transition. Moreover, we show that the Stark-shift parameters and the atom-atom interactions can strongly affect the phase transition point. The results in the absence of the Stark-shift agree precisely with those obtained by Li, Liu and Zhou, who studied the same model using a different method.

  18. Superradiance, Berry phase, photon phase diffusion, and number squeezed state in the U(1) Dicke (Tavis-Cummings) model

    SciTech Connect

    Ye Jinwu; Zhang Cunlin

    2011-08-15

    Recently, strong-coupling regimes of superconducting qubits or quantum dots inside a microwave circuit cavity and BEC atoms inside an optical cavity were achieved experimentally. The strong-coupling regimes in these systems were described by the Dicke model. Here, we solve the Dicke model by a 1/N expansion. In the normal state, we find a {radical}(N) behavior of the collective Rabi splitting. In the superradiant phase, we identify an important Berry phase term that has dramatic effects on both the ground state and the excitation spectra of the strongly interacting system. The single photon excitation spectrum has a low-energy quantum phase diffusion mode in imaginary time with a large spectral weight and also a high-energy optical mode with a low spectral weight. The photons are in a number squeezed state that may have wide applications in high sensitive measurements and quantum-information processing. Comparisons with exact diagonalization studies are made. Possible experimental schemes to realize the superradiant phase are briefly discussed.

  19. Twenty-one-month follow-up study of school-age children exposed to Hurricane Andrew.

    PubMed

    Shaw, J A; Applegate, B; Schorr, C

    1996-03-01

    To explore the 21-month course of posttraumatic stress symptomatology (PTSS) and psychological morbidity in 30 school-age children (7 to 13 years) after exposure to Hurricane Andrew. Pynoos' Posttraumatic Stress Disorder Reaction Index and Achenbach's Teacher's Report Form were administered at 8 and 21 months after Hurricane Andrew. At 21 months 70% of the children endorsed moderate-severe PTSS. The reduction in PTSS was greater for boys than girls. Psychopathology as measured by the Teacher's Report Form increased over the 19-month period. Boys demonstrated significant increases in internalizing symptoms and in Withdrawn, Anxious/Depressed, Social Problems, and Attention Problems scales, and girls showed a significant increase in the Anxious/Depressed scale. Twenty-one months after exposure to Hurricane Andrew, there were continuing high levels of PTSS and evidence of increasing emotional and behavioral problems. While girls sustained higher levels of PTSS, boys demonstrated higher indices of other psychopathology. The enduring effects of disaster associated with secondary stressors and "traumatic reminders" continue to be etiologically important for continuing psychological morbidity.

  20. Implications of Two Well-Known Models for Instructional Designers in Distance Education: Dick-Carey versus Morrison-Ross-Kemp

    ERIC Educational Resources Information Center

    Akbulut, Yavuz

    2007-01-01

    This paper first summarizes, and then compares and contrasts two well-known instructional design models: Dick and Carey Model (DC) and Morrison, Ross and Kemp model (MRK). The target audiences of both models are basically instructional designers. Both models have applications for different instructional design settings. They both see the…

  1. Low-Frequency Response Following the Passage of Hurricane Andrew on the Texas-Louisiana Shelf

    NASA Astrophysics Data System (ADS)

    Pearce, S. M.; Smith, D. C.; Dimarco, S. F.

    2009-12-01

    During August 24th through 27th in 1992, Hurricane Andrew passed through the Gulf Of Mexico almost directly over several moorings on the easternmost Louisiana shelf portion of the Texas-Louisiana Shelf (LATEX) coastal ocean monitoring program. Examination of the current meter time-series showed the existence of fast moving, long shelf waves over the entire Texas-Louisiana shelf west of the storm passage for up to 12 days after direct forcing ceased. The LATEX program featured 31 moorings each with 3 current meters over the 10, 20, 50, and 200 meter isobaths in 5 cross sectional lines with additional coverage on the 200 meter isobath from the Louisiana-Mississippi River delta, to Corpus Christi, Texas. Additionally, several pressure records from LATEX and several NOAA historical coastal tide gauge data from Sabine Pass to Port Isabella, Texas were incorporated. Raw, 3-hour low pass filtered, and 40-hour low pass filtered versions of the current data were analyzed. The pressure data used were detided using a least squares fit, and the tidal records were detided using the NOAA predicted tides for that location. All data were analyzed using a wavelet analysis to determine the spectra over time. The analyzed data shows that the shelf response was largely dominated in the internal Kelvin wave mode. The wave propagated towards the west on the shelf at approximately 400 km/day. These results are contrasted and compared with wave modes predicted for coastal trapped wave solutions. The output of a coastal ocean model simulation using a forced wind field similar to the storm are also contrasted and compared with the observed data.

  2. Incidence of childhood cancer in Kingston and St Andrew, Jamaica, 1983-2002.

    PubMed

    Bishop, K L; Hanchard, B; Gibson, T N; Lowe, D; McNaughton, D; Waugh, N; Akinbebe, A

    2013-09-01

    There have been several modifications to the classification of childhood cancers since the first report (1968-1981) specific to the Jamaican paediatric population was published in 1988. This paper reports on paediatric cancer incidence in Kingston and St Andrew, Jamaica, for the 20-year period 1983-2002 based on these modifications. All cases of cancer diagnosed in children (0-14 years), between 1983 and 2002 were extracted from the Jamaica Cancer Registry archives and classified using the International Classification of Childhood Cancer, third edition. Incidence figures were calculated as per the International Agency for Research on Cancer (IARC) reporting format for childhood cancer. There were 272 cases (133 males, 139 females) of childhood cancer identified in the 20-year period. The overall age standardized rate (ASR) was 69.4 per million; that for males was 67.8 per million, and for females, 70.9 per million. The three most common malignancies overall were leukaemia (21.3%), lymphoma (15.8%) and brain and spinal neoplasms (14.0%). In males, the highest ASRs were seen for leukaemia (14.8 per million), lymphoma (12.7 per million), and brain and spinal neoplasms (8.2 per million), and in females, leukaemia (14.4 per million), nephroblastoma (11.3 per million), and brain and spinal neoplasms (10.6 per million). The rankings of the most common childhood malignancies in Jamaica (leukaemia, brain and spinal neoplasms and lymphomas) have shown few changes since the last review. However, there are differences in frequency and gender distribution of nephroblastoma and brain and spinal neoplasms.

  3. Multi-stage impregnation of the lithospheric mantle at the Andrew Bain FZ (SWIR)

    NASA Astrophysics Data System (ADS)

    Paganelli, E.; Brunelli, D.; Bonatti, E.; Cipriani, A.; Ligi, M.

    2008-12-01

    The Southern ridge-transform intersection of Andrew Bain Fracture Zone (ABFZ) is interpreted as a "cold spot" in the mid-ocean ridge system being characterized by a negative thermal anomaly in the oceanic upper mantle. The negative thermal anomaly is associated to the cold-edge effect due to the great age contrast of the active ridge segments. During the oceanic expedition AB06-S23, in 2006, (organized by ISMAR-CNR, Bologna, Italy, and co-financed by PRNA, Italy) with the russian R/V N. Strakhov, several samples of abyssal peridotites have been collected. Textures and modal distribution of the samples have been investigated revealing a multistage impregnation history. Deep spinel-field impregnation assemblages (sp+cpx-ol) are followed by plagioclase-field patches and mineral trails (pl+cpx-ol) and late shallow gabbroic pockets and veins. The major elements mineral chemistry reveals compositional trends of low-P/T subsolidus partial- to-complete re-equilibration undergone by the upper mantle during the upwelling beneath the ridge. These samples have experienced variable degrees of melting and reacted with percolating melts of possible different composition. In particular, samples showing the lowest degrees of melting have interacted with MORB-like melts and pyroxenitic-derived melts in the spinel and plagioclase stability fields. The presence of these two kinds of melts might prove the presence of enriched portions scattered in a normal depleted mantle beneath ocean ridges. MELTS-based runs provide constraints to variable extents of pyroxenitic-derived melt interaction with the mantle source and crystallization at variable depth of the products of such an interaction. Supported by MIUR-PRIN Cofin project 2007

  4. Cylindric partitions, {{\\boldsymbol{ W }}}_{r} characters and the Andrews-Gordon-Bressoud identities

    NASA Astrophysics Data System (ADS)

    Foda, O.; Welsh, T. A.

    2016-04-01

    We study the Andrews-Gordon-Bressoud (AGB) generalisations of the Rogers-Ramanujan q-series identities in the context of cylindric partitions. We recall the definition of r-cylindric partitions, and provide a simple proof of Borodin’s product expression for their generating functions, that can be regarded as a limiting case of an unpublished proof by Krattenthaler. We also recall the relationships between the r-cylindric partition generating functions, the principal characters of {\\hat{{sl}}}r algebras, the {{\\boldsymbol{ M }}}r r,r+d minimal model characters of {{\\boldsymbol{ W }}}r algebras, and the r-string abaci generating functions, providing simple proofs for each. We then set r = 2, and use two-cylindric partitions to re-derive the AGB identities as follows. Firstly, we use Borodin’s product expression for the generating functions of the two-cylindric partitions with infinitely long parts, to obtain the product sides of the AGB identities, times a factor {(q;q)}∞ -1, which is the generating function of ordinary partitions. Next, we obtain a bijection from the two-cylindric partitions, via two-string abaci, into decorated versions of Bressoud’s restricted lattice paths. Extending Bressoud’s method of transforming between restricted paths that obey different restrictions, we obtain sum expressions with manifestly non-negative coefficients for the generating functions of the two-cylindric partitions which contains a factor {(q;q)}∞ -1. Equating the product and sum expressions of the same two-cylindric partitions, and canceling a factor of {(q;q)}∞ -1 on each side, we obtain the AGB identities.

  5. Construction, Startup and Operation of a New LLRW Disposal Facility in Andrews County, Texas - 12151

    SciTech Connect

    Van Vliet, James A.

    2012-07-01

    During this last year, Waste Control Specialists LLC (WCS) completed construction and achieved start of operations of a new low level radioactive waste (LLRW) disposal facility in Andrews County Texas. Disposal operations are underway for commercial LLRW, and start up evolutions are in progress for disposal of Department of Energy (DOE) LLRW. The overall approach to construction and start up are presented as well as some of the more significant challenges and how they were addressed to achieve initial operations of the first new commercial low level radioactive waste disposal facility in more than 30 years. The WCS disposal facility consists of two LLRW disposal cells, one for Texas Compact waste, and a separate disposal cell for DOE waste. Both disposal cells have very robust and unique designs. The cells themselves are constructed entirely in very low permeability red bed clay. The cell liners include a 0.91 meter thick clay liner meeting unprecedented permeability limits, 0.3 meter thick reinforced concrete barriers, as well as the standard geo-synthetic liners. Actions taken to meet performance criteria and install these liners will be discussed. Consistent with this highly protective landfill design, WCS chose to install a zero discharge site water management system. The considerations behind the design and construction of this system will be presented. Other activities essential to successful start of LLRW disposal operations included process and procedure development and refinement, staffing and staff development, and training. Mock ups were built and used for important evolutions and functions. Consistent with the extensive regulation of LLRW operations, engagement with the Texas Commission on Environmental Quality (TCEQ) was continuous and highly interactive. This included daily activity conference calls, weekly coordination calls and numerous topical conference calls and meetings. TCEQ staff and consultants frequently observed specific construction

  6. On remembering and forgetting our autobiographical pasts: retrograde amnesia and Andrew Mayes's contribution to neuropsychological method.

    PubMed

    Kopelman, M D; Bright, P

    2012-11-01

    Andrew Mayes's contribution to the neuropsychology of memory has consisted in steadily teasing out the nature of the memory deficit in the amnesic syndrome. This has been done with careful attention to matters of method at all stages. This particularly applies to his investigations of forgetting rates in amnesia and to his studies of retrograde amnesia. Following a brief outline of his work, the main current theories of retrograde amnesia are considered: consolidation theory, episodic-to-semantic shift theory, and multiple trace theory. Findings across the main studies in Alzheimer dementia are reviewed to illustrate what appears to be consistently found, and what is much more inconsistent. A number of problems and issues in current theories are then highlighted--including the nature of the temporal gradient, correlations with the extent of temporal lobe damage, what we would expect 'normal' remote memory curves to look like, how they would appear in focal retrograde amnesia, and whether we can pinpoint retrograde amnesia to hippocampal/medial temporal damage on the basis of existing studies. A recent study of retrograde amnesia is re-analysed to demonstrate temporal gradients on recollected episodic memories in hippocampal/medial temporal patients. It is concluded that there are two requirements for better understanding of the nature of retrograde amnesia: (i) a tighter, Mayesian attention to method in terms of both the neuropsychology and neuroimaging in investigations of retrograde amnesia; and (ii) acknowledging that there may be multiple factors underlying a temporal gradient, and that episodic and semantic memory show important interdependencies at both encoding and retrieval. Such factors may be critical to understanding what is remembered and what is forgotten from our autobiographical pasts. Copyright © 2012 Elsevier Ltd. All rights reserved.

  7. Damage to unburied flowlines in the Gulf of Mexico during Hurricane Andrew

    SciTech Connect

    Collins, J.I.

    1995-12-31

    The US Minerals Management Service reported that 454 sub-sea pipelines were damaged during Hurricane Andrew. Previously, damage to pipelines and flowlines has been reported in a series of papers by Blumberg (1964). In the present paper a formulation of the hydrodynamic loads acting on a flowline which is lying on the seafloor in the presence of waves and currents is summarized. In general, the line dynamics can be represented by a fourth order differential equation with nonlinear forcing but a method is presented which assumes that the complete response can be broken down into distinct phases from ``early motion`` to ``taut line`` to ``yield and breaking``. The selection of appropriate force coefficients and boundary layer interactions is discussed. The initial stages of pipeline migration across the seafloor is shown to be followed by loading of the flowline once all of the ``slack`` is taken up. The loads are shown to be a function of the current orientation and the maximum tension is approximately proportional to the square of the distance between risers. Comparisons of predicted and observed damages confirm that ``effective`` boundary layer thicknesses at the seafloor and typical drag and lift coefficients which were selected based on available literature are consistent with observed flowline damage. The results of sidescan sonar mosaics of pipeline migrations and reported damage are consistent with the loads predicted by relatively simple hydrodynamic/structural models. The material presented in this paper permits the evaluation of the risk of damage to unburied flowlines using relatively simple tools. Guidelines to the assumptions of force coefficients and flowline responses are provided. 20 refs., 11 figs., 2 tabs.

  8. Intermediate accelerated solutions as generic late-time attractors in a modified Jordan-Brans-Dicke theory

    SciTech Connect

    Cid, Antonella; Leon, Genly; Leyva, Yoelsy E-mail: genly.leon@ucv.cl

    2016-02-01

    In this paper we investigate the evolution of a Jordan-Brans-Dicke scalar field, Φ, with a power-law potential in the presence of a second scalar field, φ, with an exponential potential, in both the Jordan and the Einstein frames. We present the relation of our model with the induced gravity model with power-law potential and the integrability of this kind of models is discussed when the quintessence field φ is massless, and has a small velocity. The fact that for some fine-tuned values of the parameters we may get some integrable cosmological models, makes our choice of potentials very interesting. We prove that in Jordan-Brans-Dicke theory, the de Sitter solution is not a natural attractor. Instead, we show that the attractor in the Jordan frame corresponds to an ''intermediate accelerated'' solution of the form a(t) ≅ e{sup α{sub 1} t{sup p{sup {sub 1}}}}, as t → ∞ where α{sub 1} > 0 and 0 < p{sub 1} < 1, for a wide range of parameters. Furthermore, when we work in the Einstein frame we get that the attractor is also an ''intermediate accelerated'' solution of the form a(t) ≅ e{sup α{sub 2} tp{sub 2}} as t → ∞ where α{sub 2} > 0 and 0

  9. What I Learned From Henry Dick: Highlights and What's Left for Us?

    NASA Astrophysics Data System (ADS)

    Kelemen, P.

    2006-12-01

    (1) Slow spreading ridges have lots of peridotite outcrops, especially at segment ends. This dove-tailed with seismic and gravity observations, and geodynamic modeling, to yield a community consensus on 3D crustal accretion. However there are an increasingly large number of abysmal peridotite outcrops known at segment centers, so what is happening to the simple 3D picture? (2) There are global systematics in abysmal peridotite compositions, and in corresponding MORB, that define apparent melting trends. However (a) Why do the peridotite trends slope the wrong way on phase diagrams? (b) How come local variability in some fracture zones is almost as large as global variability? (c) What are the pyroxene proportions when corrected to magmatic temperature? (d) To what extent are the modal data affected by density changes during hydrous alteration? (e) To what extent are pyroxene and olivine contents affected by reactive dissolution and/or "impregnation"? (f) What does it mean when highly depleted peridotites are sampled from very cold parts of the ridge system? (3) Fractional melting is likely. Well, OK, near fractional. However (a) How many of those clinopyroxenes analyzed by Johnson et al (JGR 90) and Johnson & Dick (JGR 92) are igneous? Particularly the most depleted ones must be metamorphic. Given the diffusion data, what do the trace element concentrations really tell us? (b) What about the whole rock data? (4) The average composition of oceanic gabbros from ODP Hole 735B = average MORB, for trace as well as major elements. How does this work? Average MORB results from ~ 50% crystal fractionation. Where are the corresponding cumulates to balance lavas & 735B style gabbro sections? (5) Re-circulating, depleted peridotites can melt over and over again, provided they are reheated to `ambient' potential temperature during their residence in the convecting mantle. (6) There are important feedbacks between localized melt transport and localized deformation, in the

  10. Enhanced spin squeezing and quantum entanglement near the critical point of the Jaynes-Cummings-Dicke model

    NASA Astrophysics Data System (ADS)

    Bhattacherjee, Aranya B.; Sharma, Deepti

    2017-04-01

    We investigate spin squeezing (SS) and the quantum Fisher information (QFI) for the Jaynes-Cummings-Dicke (JCD) model in a two-component atomic Bose-Einstein condensate (BEC) inside an optical cavity. Analytical expressions for spin squeezing and the reciprocal of the quantum Fisher information per particle (RMQFI) are derived using the frozen spin approximation. It is shown that in the superradiant phase near the critical point, maximum squeezing and maximum quantum entanglement occur and thus the critical point emerges as a useful resource for precision measurements. In the presence of decoherence and particle loss, we show that gradually with time, even though the ability of squeezing and entanglement generation are weakened, yet significant amounts are still present which can be relevant to quantum information processing and precision spectroscopy.

  11. On the relationship between the classical Dicke-Jaynes-Cummings-Gaudin model and the nonlinear Schroedinger equation

    SciTech Connect

    Du, Dianlou; Geng, Xue

    2013-05-15

    In this paper, the relationship between the classical Dicke-Jaynes-Cummings-Gaudin (DJCG) model and the nonlinear Schroedinger (NLS) equation is studied. It is shown that the classical DJCG model is equivalent to a stationary NLS equation. Moreover, the standard NLS equation can be solved by the classical DJCG model and a suitably chosen higher order flow. Further, it is also shown that classical DJCG model can be transformed into the classical Gaudin spin model in an external magnetic field through a deformation of Lax matrix. Finally, the separated variables are constructed on the common level sets of Casimir functions and the generalized action-angle coordinates are introduced via the Hamilton-Jacobi equation.

  12. Superfund record of decision (EPA Region 3): William Dick Lagoons, West Caln Township, Chester County, PA, March 1993

    SciTech Connect

    Not Available

    1993-03-31

    This decision document presents the selected remedial action for Operable Unit 3 of the William Dick Lagoons Site (Site), in West Caln Township, Pennsylvania. The remedy described in this Record of Decision is for Operable Unit 3 at the Site. The remedy selected for Operable Unit 3 will reduce the concentrations of hazardous substances in the Site soils so that leaching of contaminants into the groundwater will be minimized. Reduction of the volatile organic compounds and semi-volatile organic compounds in the soils is necessary in order the groundwater will not continue to be impacted above acceptable levels. In addition, the installation of a vegetative soil cover or multi-layer cap will prevent the surrounding community from exposure to Site-related contaminants through inhalation, ingestion, and dermal contact.

  13. Three Averaging Techniques for Reduction of Antenna Temperature Variance Measured by a Dicke Mode, C-Band Radiometer

    NASA Technical Reports Server (NTRS)

    Mackenzie, Anne I.; Lawrence, Roland W.

    2000-01-01

    As new radiometer technologies provide the possibility of greatly improved spatial resolution, their performance must also be evaluated in terms of expected sensitivity and absolute accuracy. As aperture size increases, the sensitivity of a Dicke mode radiometer can be maintained or improved by application of any or all of three digital averaging techniques: antenna data averaging with a greater than 50% antenna duty cycle, reference data averaging, and gain averaging. An experimental, noise-injection, benchtop radiometer at C-band showed a 68.5% reduction in Delta-T after all three averaging methods had been applied simultaneously. For any one antenna integration time, the optimum 34.8% reduction in Delta-T was realized by using an 83.3% antenna/reference duty cycle.

  14. Characterization of the quantum phase transition in a two-mode Dicke model for different cooperation numbers

    NASA Astrophysics Data System (ADS)

    Quezada, L. F.; Nahmad-Achar, E.

    2017-01-01

    We show how the use of variational states to approximate the ground state of a system can be employed to study a multimode Dicke model. One of the main contributions of this work is the introduction of a not very commonly used quantity, the cooperation number, and the study of its influence on the behavior of the system, paying particular attention to the quantum phase transitions and the accuracy of the used approximations. We also show how these phase transitions affect the dependence of the expectation values of some of the observables relevant to the system and the entropy of entanglement with respect to the energy difference between atomic states and the coupling strength between matter and radiation, thus characterizing the transitions in different ways.

  15. Evaluation of Hydraulically Significant Discontinuities in Dockum Group Mudrocks in Andrews County, Texas

    NASA Astrophysics Data System (ADS)

    Holt, R. M.; Kuszmaul, J. S.; Cao, S.; Powers, D. W.

    2013-12-01

    Triassic mudrocks of the Dockum Group (Cooper Canyon Formation) host four, below-grade landfills at the Waste Control Specialists (WSC) site in Andrews County, Texas, including: a hazardous waste landfill and three radioactive waste landfills. At the study site, the Dockum consists of mudrocks with sparse siltstone/sandstone interbeds that developed in a semi-arid environment from an ephemeral meandering fluvial system. Sedimentary studies reveal that the mudrocks are ancient floodplain vertisols (soils with swelling clays) and siltstone/sandstone interbeds are fluvial channel deposits that were frequently subaerially exposed. Rock discontinuities, including fractures and syndepositional slickensided surfaces, were mapped during the excavation of the WCS radioactive waste landfills along vertical faces prepared by the construction contractor. Face locations were selected to insure a sampled area with nearly complete vertical coverage for each landfill. Individual discontinuities were mapped and their strike, dip, length, roughness, curvature, staining, and evidence of displacement were described. In the three radioactive waste disposal landfills, over 1750 discontinuities across 35 excavated faces were mapped and described, where each face was nominally 8 to 10 ft tall and 50 to 100 ft long. Genetic units related to paleosol development were identified. On average, the orientation of the discontinuities was horizontal, and no other significant trends were observed. Mapping within the landfill excavations shows that most discontinuities within Dockum rocks are horizontal, concave upward, slickensided surfaces that developed in the depositional environment, as repeated wetting and drying cycles led to shrinking and swelling of floodplain vertisols. Fractures that showed staining (a possible indicator of past or present hydraulic activity) are rare, vertical to near-vertical, and occur mainly in, and adjacent to, mechanically stiff siltstone and sandstone interbeds

  16. Insecticide resistance to permethrin and malathion and associated mechanisms in Aedes aegypti mosquitoes from St. Andrew Jamaica

    PubMed Central

    Francis, Sheena; Saavedra-Rodriguez, Karla; Perera, Rushika; Paine, Mark; Black, William C.

    2017-01-01

    The emergence of novel diseases spread by the Aedes aegypti mosquito in Jamaica and the Caribbean, has prompted studies on insecticide resistance towards effective management of the vector. Though Jamaica has been using the organophosphate insecticide malathion in its vector control program for more than 30 years, resistance to the pesticide has not been tested in over a decade. We analyzed resistance to malathion and the pyrethroid insecticide, permethrin on mosquitoes collected across St. Andrew, Jamaica, and analyzed the molecular basis of resistance. The Center for Disease Control (CDC) bioassay revealed that Ae. aegypti mosquitoes from St. Andrew, Jamaica were resistant to permethrin (15 μg/bottle) with mortalities at 0–8% at 30 minute exposure time, while contact with malathion (50 μg/bottle) revealed ≤ 50% mortality at 15 minutes, which increased to 100% at 45 minutes. The standard susceptible New Orleans (NO) strain exhibited 100% mortality within15 minutes. The activities of multifunction oxidases and p-nitro phenyl-acetate esterases were significantly greater in most Jamaican populations in comparison to the NO strain, while activities of glutathione-S-transferase, acetylcholinesterase, α-esterase and ß-esterase activity were relatively equal, or lower than that of the control strain. The frequency of knockdown resistance mutations in the voltage dependent sodium channel gene were measured. All collections were fixed for Cys1,534 while 56% of mosquitoes were Ile1,016/Val1,016 heterozygotes, and 33% were Ile1,016 homozygotes. Aedes aegypti from St. Andrew Jamaica are resistant to permethrin with variations in the mode of mechanism, and possibly developing resistance to malathion. Continued monitoring of resistance is critically important to manage the spread of the vector in the country. PMID:28650966

  17. Insecticide resistance to permethrin and malathion and associated mechanisms in Aedes aegypti mosquitoes from St. Andrew Jamaica.

    PubMed

    Francis, Sheena; Saavedra-Rodriguez, Karla; Perera, Rushika; Paine, Mark; Black, William C; Delgoda, Rupika

    2017-01-01

    The emergence of novel diseases spread by the Aedes aegypti mosquito in Jamaica and the Caribbean, has prompted studies on insecticide resistance towards effective management of the vector. Though Jamaica has been using the organophosphate insecticide malathion in its vector control program for more than 30 years, resistance to the pesticide has not been tested in over a decade. We analyzed resistance to malathion and the pyrethroid insecticide, permethrin on mosquitoes collected across St. Andrew, Jamaica, and analyzed the molecular basis of resistance. The Center for Disease Control (CDC) bioassay revealed that Ae. aegypti mosquitoes from St. Andrew, Jamaica were resistant to permethrin (15 μg/bottle) with mortalities at 0-8% at 30 minute exposure time, while contact with malathion (50 μg/bottle) revealed ≤ 50% mortality at 15 minutes, which increased to 100% at 45 minutes. The standard susceptible New Orleans (NO) strain exhibited 100% mortality within15 minutes. The activities of multifunction oxidases and p-nitro phenyl-acetate esterases were significantly greater in most Jamaican populations in comparison to the NO strain, while activities of glutathione-S-transferase, acetylcholinesterase, α-esterase and ß-esterase activity were relatively equal, or lower than that of the control strain. The frequency of knockdown resistance mutations in the voltage dependent sodium channel gene were measured. All collections were fixed for Cys1,534 while 56% of mosquitoes were Ile1,016/Val1,016 heterozygotes, and 33% were Ile1,016 homozygotes. Aedes aegypti from St. Andrew Jamaica are resistant to permethrin with variations in the mode of mechanism, and possibly developing resistance to malathion. Continued monitoring of resistance is critically important to manage the spread of the vector in the country.

  18. Effect of Hurricane Andrew on the Turkey Point Nuclear Generating Station from August 20--30, 1992. [Final report

    SciTech Connect

    Hebdon, F.J.

    1993-03-01

    On August 24, 1992, Hurricane Andrew, a Category 4 hurricane, struck the Turkey Point Electrical Generating Station with sustained winds of 145 mph (233 km/h). This is the report of the team that the US Nuclear Regulatory Commission (NRC) and the Institute of Nuclear Power Operations (INPO) jointly sponsored (1) to review the damage that the hurricane caused the nuclear units and the utility`s actions to prepare for the storm and recover from it, and (2) to compile lessons that might benefit other nuclear reactor facilities.

  19. The psychological effects of Hurricane Andrew on ethnic minority and Caucasian children and adolescents: a case study.

    PubMed

    Jones, R T; Frary, R; Cunningham, P; Weddle, J D; Kaiser, L

    2001-02-01

    The impact of Hurricane Andrew on 212 African American, Caucasian, and Hispanic elementary and middle school children was examined at 6 months postdisaster. Using self-report instruments, this case study examined the predictive utility of several hypothesized mediators of children's reactions to disaster. Results showed higher levels of intrusive symptomatology for girls and for elementary school children as compared with their middle school counterparts. No differences were found with reference to race. The lack of findings concerning race is addressed, as well as implications for future studies.

  20. A tale of two storms: Surges and sediment deposition from Hurricanes Andrew and Wilma in Florida’s southwest coast mangrove forests: Chapter 6G in Science and the storms-the USGS response to the hurricanes of 2005

    USGS Publications Warehouse

    Smith, Thomas J.; Anderson, Gordon H.; Tiling, Ginger

    2007-01-01

    Hurricanes can be very different from each other. Here we examine the impacts that two hurricanes, Andrew and Wilma, had in terms of storm surge and sediment deposition on the southwest coast of Florida. Although Wilma was the weaker storm, it had the greater impact. Wilma had the higher storm surge over a larger area and deposited more sediment than did Andrew. This effect was most likely due to the size of Wilma's eye, which was four times larger than that of Andrew.

  1. Patterns and drivers of Holocene vegetational change near the prairie-forest ecotone in Minnesota: revisiting McAndrews' transect.

    PubMed

    Nelson, David M; Hu, Feng Sheng

    2008-07-01

    Holocene vegetational dynamics along the prairie-forest border of Minnesota were first documented in McAndrews' classic work. Despite numerous subsequent paleo-studies, a number of questions remain unanswered about the vegetation history of the region. Here, pollen, stable-isotope, mineral, and charcoal data are described from three lakes near McAndrews' sites. These data were compared with other paleoenvironmental records to reconstruct vegetation, aridity, and fire. The climate was relatively wet with increasing summer temperatures before approximately 8000 yr before present (BP). The rates of changes were asymmetric for the onset and termination of middle-Holocene aridity, with an abrupt increase at approximately 8000 yr BP and a gradual, but variable, decline from approximately 7800 to 4000 yr BP. Early-Holocene coniferous forests changed to mixed-grass prairie without an intervening period of tallgrass prairie or deciduous forest, whereas the retreat of prairie was characterized by transitions from mixed-grass to tallgrass prairie to deciduous forest and finally to coniferous forest. Within the middle Holocene, the composition and structures of grass-dominated vegetation varied both temporally and spatially. Fire primarily responded to changes in climate and fuel loads. Vegetation was more strongly influenced by climatic changes than by fire-regime shifts.

  2. Mangroves, hurricanes, and lightning strikes: Assessment of Hurricane Andrew suggests an interaction across two differing scales of disturbance

    USGS Publications Warehouse

    Smith, Thomas J.; Robblee, Michael B.; Wanless, Harold R.; Doyle, Thomas W.

    1994-01-01

    The track of Hurricane Andrew carried it across one of the most extensive mangrove for ests in the New World. Although it is well known that hurricanes affect mangrove forests, surprisingly little quantitative information exists concerning hurricane impact on forest structure, succession, species composition, and dynamics of mangrove-dependent fauna or on rates of eco-system recovery (see Craighead and Gilbert 1962, Roth 1992, Smith 1992, Smith and Duke 1987, Stoddart 1969).After Hurricane Andrew's passage across south Florida, we assessed the environmental damage to the natural resources of the Everglades and Biscayne National Parks. Quantitative data collected during subsequent field trips (October 1992 to July 1993) are also provided. We present measurements of initial tree mortality by species and size class, estimates of delayed (or continuing) tree mortality, and observations of geomorphological changes along the coast and in the forests that could influence the course of forest recovery. We discuss a potential interaction across two differing scales of disturbance within mangrove forest systems: hurricanes and lightning strikes.

  3. Evaluation of long-term community recovery from Hurricane Andrew: sources of assistance received by population sub-groups.

    PubMed

    McDonnell, S; Troiano, R P; Barker, N; Noji, E; Hlady, W G; Hopkins, R

    1995-12-01

    Two three-stage cluster surveys were conducted in South Dade County, Florida, 14 months apart, to assess recovery following Hurricane Andrew. Response rates were 75 per cent and 84 per cent. Sources of assistance used in recovery from Hurricane Andrew differed according to race, per capita income, ethnicity, and education. Reports of improved living situation post-hurricane were not associated with receiving relief assistance, but reports of a worse situation were associated with loss of income, being exploited, or job loss. The number of households reporting problems with crime and community violence doubled between the two surveys. Disaster relief efforts had less impact on subjective long-term recovery than did job or income loss or housing repair difficulties. Existing sources of assistance were used more often than specific post-hurricane relief resources. The demographic make-up of a community may determine which are the most effective means to inform them after a disaster and what sources of assistance may be useful.

  4. General integrable n-level, many-mode Janes-Cummings-Dicke models and classical r-matrices with spectral parameters

    SciTech Connect

    Skrypnyk, T. E-mail: tskrypnyk@imath.kiev.ua

    2015-02-15

    Using the technique of classical r-matrices and quantum Lax operators, we construct the most general form of the quantum integrable “n-level, many-mode” spin-boson Jaynes-Cummings-Dicke-type hamiltonians describing an interaction of a molecule of N n-level atoms with many modes of electromagnetic field and containing, in general, additional non-linear interaction terms. We explicitly obtain the corresponding quantum Lax operators and spin-boson analogs of the generalized Gaudin hamiltonians and prove their quantum commutativity. We investigate symmetries of the obtained models that are associated with the geometric symmetries of the classical r-matrices and construct the corresponding algebra of quantum integrals. We consider in detail three classes of non-skew-symmetric classical r-matrices with spectral parameters and explicitly obtain the corresponding quantum Lax operators and Jaynes-Cummings-Dicke-type hamiltonians depending on the considered r-matrix.

  5. ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS: Generation of Entangled Multi-atom Dicke States in Cavity Quantum Electrodynamics

    NASA Astrophysics Data System (ADS)

    Shu, Jing; Liu, Zhong

    2010-06-01

    We propose a scheme to generate two-atom maximally entangled state in cavity quantum electrodynamics (QED). The scheme can be extended to generation of entangled multi-atom Dicke states if we control the interaction time of atoms with cavity modes. We use adiabatically state evolution under large atom-cavity detuning, so the scheme is insensitive to atomic spontaneous decay. The influence of cavity decay on fidelity and success probability is discussed.

  6. "Twisted" rational r-matrices and the algebraic Bethe ansatz: Applications to generalized Gaudin models, Bose-Hubbard dimers, and Jaynes-Cummings-Dicke-type models

    NASA Astrophysics Data System (ADS)

    Skrypnyk, T. V.

    2016-10-01

    We construct quantum integrable systems associated with the Lie algebra gl( n) and non-skew-symmetric "shifted and twisted" rational r-matrices. The obtained models include Gaudin-type models with and without an external magnetic field, n-level ( n-1)-mode Jaynes-Cummings-Dicke-type models in the Λ-configuration, a vector generalization of Bose-Hubbard dimers, etc. We diagonalize quantum Hamiltonians of the constructed integrable models using a nested Bethe ansatz.

  7. Investigation of forest canopy temperatures recorded by the thermal infrared multispectral scanner at H. J. Andrews Experimental Forest

    NASA Technical Reports Server (NTRS)

    Sader, Steven A.

    1986-01-01

    Thermal Infrared Multispectral Scanner (TIMS) data were collected over the H. J. Andrews Experimental Forest in Western Oregon on July 29, 1983 at approximately 1:30 p.m., Pacific Standard Time. The relation of changes in canopy temperature to green leaf biomass levels in reforested clearcuts and old-growth forest was investigated. A digital data base was generated in order to isolate that portion of the thermal emission that could be attributed to surface properties other than the vegetation biomass component. The TIMS appears to be capable of detecting subtle differences in ERT as related to canopy closure and green lead biomass, however calibration techniques are needed to correct for emissivity and atmospheric effects.

  8. Plant phenology patterns at three sites on the H.J. Andrews Experimental Forest, Oregon, 1987 to 2007.

    NASA Astrophysics Data System (ADS)

    Shaw, D. C.; Creel, C.; Downing, G.; Remillard, S.; O'Connell, K.

    2007-12-01

    Plant phenology data has been collected at three sites on the H.J. Andrews Experimental Forest, Oregon since the late 1970's. The sites were visited once every three weeks year-round. Current efforts to clean and archive this data are on-going. Here we present on a 20 year data set from 1987 to 2007. The three sites are located at Watersheds (WS) 10, 8, and 7/6, at an elevation of 466 m, 993 m, and 905/950 m respectively. Forests were old growth (WS 8) and regenerating clearcuts (WS 6, 10), or shelterwood clearcut with overstory removed in 1984 (WS 7) dominated by Douglas-fir, western hemlock, true firs, and western redcedar. One tree (Douglas-fir), two evergreen shrubs, three deciduous shrubs, and four herbs were followed for vegetative and flowering phenology, including bud swell, bud bread, leaf expansion, leaf color change, leaf fall, flower bud swell, blooming, petal loss, fruit formation, and seed dispersal. Weather stations are located at each site and tied into a network of stations in this LTER site. Physical factors such as snow depth, snow coverage, freeze-thaw activity, as well as lichen condition were also noted. We are asking two key questions regarding plant phenology patterns. 1. Has the growing season lengthened in the mountainous watershed of the HJ Andrews, and is this similar for a low elevation site (WS 10) versus a mid elevation site (WS 8, 7/6)? 2. Do snow-pack dynamics influence plant phenology more so than temperature (degree days)?

  9. Contemporaneous early diagenetic formation of organic and inorganic sulfur in estuarine sediments from St. Andrew Bay, Florida, USA

    NASA Astrophysics Data System (ADS)

    Brüchert, Volker; Pratt, Lisa M.

    1996-07-01

    Estuarine sediment samples were collected from nine stations in St. Andrew Bay near Panama City, Florida, USA. Contrasting grain size and varying concentration of organic carbon allowed a comparative study of the relationships among organic degradation processes, sulfur cycling, and diagenetic removal of dissolved sulfide produced by bacterial sulfate reduction. Abundance and sulfur isotopic composition were determined for dissolved sulfide, dissolved sulfate, pyrite, humic-acid sulfur, fulvic-acid sulfur, and elemental sulfur. Presence of free dissolved sulfide and enrichment in 34S of porewater sulfate in samples from organic-rich, muddy sediments of St. Andrew Bay indicate high rates of sulfate reduction and anoxic conditions below 5 mm depth. Such conditions are not reflected in samples from organic-poor, sandy, near-shore sediments collected from highly productive areas occupied by seagrass beds. In this estuarine system, pyrite and fulvic-acid sulfur are the largest sinks for sulfide produced by bacterial sulfate reduction. Strong correlation between abundances of pyrite and fulvic-acid sulfur suggests coincident formation in the uppermost 10 cm of sediment. Large differences in isotopic composition between these two species and consistent enrichment in 34S of the fulvic-acid fraction, however, indicate two different reaction pathways. Abundance and sulfur isotopic composition of humic-acid and fulvic-acid sulfur suggest that organic sulfur is derived from mixing between (1) 34S-depleted sulfur with an unknown oxidation state that was recycled from bacterial hydrogen sulfide and (2) 34S-enriched sulfur interpreted as primary biosynthetic sulfur originally assimilated from dissolved sulfate. Samples taken from sandy sediment localities where aquatic vascular plants are rooted in the anoxic zone show a strong depletion in 34S in the fulvic-acid sulfur fraction suggesting recycled hydrogen sulfide as the dominant source of organic sulfur.

  10. Purchase of Microwave Reactors for Implementation of Small-scale Microwave-accelerated Organic Chemistry Laboratory Program in Undergraduate Curriculum and Synthetic Chemistry Research at HU

    DTIC Science & Technology

    2015-05-16

    2006, 83(6), 937 – 939; Ryan G. Stabile and Andrew P. Dicks , Two-Step Semi- Microscale Preparation of a Cinnamate Ester Sunscreen Analog, Journal of...Chemical Education, 2004, 81(10), 1488 – 1491. 3. Ryan G. Stabile and Andrew P. Dicks , Semi-Microscale Williamson Ether Synthesis and Simoltaneous...Evangelos Aktoudianakis, Elton Chan, Amanda R. Edward, Isabel Jarosz, Vicki Lee, Leo Mui, Sonya S. Thatipamala, and Andrew P. Dicks , “Greening Up” the

  11. Nonvolatile taste components of culinary-medicinal maitake mushroom, Grifola frondosa (Dicks.:Fr.) S.F. Gray.

    PubMed

    Huang, Shih-Jeng; Tsai, Shu-Yao; Lin, Shin-Yi; Liang, Chih-Hung; Mau, Jeng-Leun

    2011-01-01

    Culinary-medicinal maitake mushroom Grifola frondosa (Dicks.: Fr.) S.F. Gray mycelium was inoculated into wheat, a new product was formed after fungal fermentation, and its nonvolatile taste components were studied. Contents of crude ash, fat, fiber, and protein were higher in fruit bodies and mycelia, whereas carbohydrate contents were higher in the uninoculated and fermented wheat. Contents of total soluble sugars and polyols were 234.06, 111.70, 88.58, and 28.83 mg/g for fermented wheat, fruiting bodies, mycelia, and wheat, respectively. Contents of total free amino acids were in the descending order of mycelia > fermented wheat > fruiting bodies > wheat. Contents of total 5'-nucleotides were in the descending order: fruiting bodies > mycelia > fermented wheat > wheat. Based on the results obtained, fruiting bodies and mycelia possessed highly intense umami taste. Overall, as a result of solid-state fermentation, fermented wheat contained more taste components and a higher equivalent umami concentration than wheat did.

  12. Higgs potential from extended Brans–Dicke theory and the time-evolution of the fundamental constants

    NASA Astrophysics Data System (ADS)

    Solà, Joan; Karimkhani, Elahe; Khodam-Mohammadi, A.

    2017-01-01

    Despite the enormous significance of the Higgs potential in the context of the standard model of electroweak interactions and in grand unified theories, its ultimate origin is fundamentally unknown and must be introduced by hand in accordance with the underlying gauge symmetry and the requirement of renormalizability. Here we propose a more physical motivation for the structure of the Higgs potential, which we derive from a generalized Brans–Dicke (BD) theory containing two interacting scalar fields. One of these fields is coupled to curvature as in the BD formulation, whereas the other is coupled to gravity both derivatively and non-derivatively through the curvature scalar and the Ricci tensor. By requiring that the cosmological solutions of the model are consistent with observations, we show that the effective scalar field potential adopts the Higgs potential form with a mildly time-evolving vacuum expectation value. This residual vacuum dynamics could be responsible for the possible time variation of the fundamental constants, and is reminiscent of former Bjorken’s ideas on the cosmological constant problem.

  13. 33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla... referred to as the “Tyndall Drone Launch Corridor.” (b) The regulations. (1) Military usage of areas...

  14. 33 CFR 334.680 - Gulf of Mexico, southeast of St. Andrew Bay East Entrance, small-arms firing range, Tyndall Air...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... Andrew Bay East Entrance, small-arms firing range, Tyndall Air Force Base, Fla. 334.680 Section 334.680..., small-arms firing range, Tyndall Air Force Base, Fla. (a) The danger zones—(1) Area No. 1. The waters of... Officer, Tyndall Air Force Base, Florida, and such agencies as he may designate. (Sec. 7, 40 Stat....

  15. 33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.... Warnings will be broadcast by the Air Force on Channel 16 (156.80 MHz) and Channel 13 (27.115 MHz)...

  16. 33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.... Warnings will be broadcast by the Air Force on Channel 16 (156.80 MHz) and Channel 13 (27.115 MHz)...

  17. 33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.... Warnings will be broadcast by the Air Force on Channel 16 (156.80 MHz) and Channel 13 (27.115 MHz)...

  18. 33 CFR 334.770 - Gulf of Mexico and St. Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.; restricted.... Andrew Sound, south of East Bay, Fla., Tyndall Drone Launch Corridor, Tyndall Air Force Base, Fla.... Warnings will be broadcast by the Air Force on Channel 16 (156.80 MHz) and Channel 13 (27.115 MHz)...

  19. Invertebrates of The H.J. Andrews Experimental Forest, Western Cascade Range, Oregon. V: An Annotated List of Insects and Other Arthropods

    Treesearch

    Gary L. Parson; Gerasimos Cassis; Andrew R. Moldenke; John D. Lattin; Norman H. Anderson; Jeffrey C Miller; Paul Hammond; Timothy D. Schowalter

    1991-01-01

    An annotated list of species of insects and other arthropods that have been collected and studies on the H.J. Andrews Experimental forest, western Cascade Range, Oregon. The list includes 459 families, 2,096 genera, and 3,402 species. All species have been authoritatively identified by more than 100 specialists. Information is included on habitat type, functional group...

  20. Invertebrates of The H.J. Andrews Experimental Forest, western Cascade Range, Oregon. V: An annotated list of insects and other arthropods.

    Treesearch

    Gary L. Parson; Gerasimos Cassis; Andrew R. Moldenke; John D. Lattin; Norman H. Anderson; Jeffrey C Miller; Paul Hammond; Timothy D. Schowalter

    1991-01-01

    An annotated list of species of insects and other arthropods that have been collected and studies on the H.J. Andrews Experimental forest, western Cascade Range, Oregon. The list includes 459 families, 2,096 genera, and 3,402 species. All species have been authoritatively identified by more than 100 specialists. Information is included on habitat type, functional group...

  1. Construct validity of the MacAndrew Scale: secondary psychopathic and dysthymic-neurotic character orientations among adolescent male misdemeanor offenders.

    PubMed

    Moore, R H

    1985-03-01

    The empirical validity of the MacAndrew Scale was investigated in 200 adolescent males convicted of misdemeanor offenses who were classified according to their pattern of alcohol intoxication. Classification results were comparable to those from studies of adult men--true positive = 80%, false negative = 20%, true negative = 81% and false positive = 19%. An empirical cluster analysis of factor scores from the California Psychological Inventory yielded 14 personality types. About 56% of these cases resembled two character orientations (Emotional Extraversion or Emotional Introversion) that were hypothesized by MacAndrew to mediate addiction-proneness among males. However, 38.7% of these subjects were not alcohol misusers. The hypothesis that Emotional Introverts tend to be classified as false negatives was not supported--true positive = 79% and false negative = 21%. Although MacAndrew's formulation of two character orientations has heuristic value, the present study found alcohol misuse among adolescents with other personality characteristics. Studies of nonoffender adolescent males were recommended to clarify the MacAndrew Scale's sensitivity to the character orientation Emotional Introvert. Consistent with earlier research, the present study found no evidence of high levels of emotional tension in the form of anxiety or depression among adolescent alcohol misusers.

  2. Experimentally feasible set of criteria detecting genuine multipartite entanglement in n-qubit Dicke states and in higher-dimensional systems

    SciTech Connect

    Huber, Marcus; Erker, Paul; Schimpf, Hans; Gabriel, Andreas; Hiesmayr, Beatrix

    2011-04-15

    We construct a set of criteria detecting genuine multipartite entanglement in arbitrary dimensional multipartite systems. These criteria are optimally suited for detecting multipartite entanglement in n-qubit Dicke states with m excitations, as shown in exemplary cases. Furthermore, they can be employed to detect multipartite entanglement in different states related to quantum cloning, decoherence-free communication, and quantum secret sharing. In a detailed analysis, we show that the criteria are also more robust to noise than any other criterion known so far, especially with increasing system size. Furthermore, it is shown that the number of required local observables scales only polynomially with size, thus making the criteria experimentally feasible.

  3. Acute and sub-acute toxicological evaluation of lyophilized Nymphaea x rubra Roxb. ex Andrews rhizome extract.

    PubMed

    Kumar, Kushal; Sharma, Sabeena; Kumar, Ashish; Bhardwaj, Pushpender; Barhwal, Kalpana; Hota, Sunil Kumar

    2017-08-01

    Nymphaea x rubra Roxb. ex Andrews (N. rubra) has been widely reported for immunomodulatory properties and treatment of piles, bleeding nose and dysentery in traditional medicinal systems. However, its in-vitro and in-vivo toxicity studies have never been investigated. So, the present study was designed to investigate in-vitro and in-vivo toxicity of methanolic extract of N. rubra rhizome in rats. In-vitro cytotoxicity studies were conducted for different doses of extract in N2a cell lines. For in-vivo toxicity studies, SD rats were divided into three groups and administered with 0, 300 and 2000 mg/kg b. w., p. o., of N. rubra extract respectively. In acute toxicity studies, female animals after extract administration animals were sacrificed for hematological profiling and gross necropsy. In sub-acute toxicity studies, both male and female animals were administered with extract daily for 14 days and were sacrificed for hematological, biochemical and histological examination. Body weight and food water intake was measured daily and animals were observed for visual toxic effects, behavioral changes and mortality. During in-vivo toxicity studies, none of the animals showed signs of toxicity and mortality during toxicity studies. The present findings suggest its safety and NOAEL of N. rubra rhizome extract to be > 2000 mg/kg b. w. Copyright © 2017. Published by Elsevier Inc.

  4. Measuring Change in Symptoms of Neurobehavioural Disability: Responsiveness of the St Andrew's-Swansea Neurobehavioural Outcome Scale.

    PubMed

    Alderman, Nick; Williams, Claire; Knight, Caroline; Wood, Rodger Ll

    2017-04-05

    Neurobehavioural disability (NBD) after acquired brain injury (ABI) is often associated with poor outcome. The "St Andrew's-Swansea Neurobehavioural Outcome Scale" (SASNOS) was developed to measure NBD in a range of applications. Two of the "holy trinity" of psychometric properties, reliability and validity, have been comprehensively mapped, but the extent to which SASNOS meets the third, responsiveness, has not been investigated. Demonstrating responsiveness is essential in instruments employed in repeated measurement scenarios to confirm their ability to discriminate real change from error. However, there is no single agreed method for determining responsiveness. For some instruments, this property remains unexplored. A difference in scores attaining statistical significance for aggregate data is frequently cited as support for this construct, but this approach remains heavily criticized. This study explores responsiveness of SASNOS. Consecutive SASNOS assessments completed over varying times for 145 individuals participating in neurobehavioural rehabilitation, drawn from multiple services, were compiled into a retrospective sample of convenience. Multiple methods were employed to confirm internal responsiveness, including those identifying statistically significant change, minimally detectable change and minimally important change. All methods confirmed responsiveness as a psychometric property of SASNOS; the extent depended on method used and NBD domain investigated. A number of indicators are presented, which equip clinicians and researchers with options to interpret results from repeated assessments, including the individual level in the context of rehabilitation. SASNOS reliably measures change over time in NBD symptoms, further confirming its suitability as an instrument for investigating multidimensional outcomes of ABI.

  5. Health-hazard evaluation report HETA 89-183-2101, Andrew Jackson Junior High School, Cross Lanes, West Virginia

    SciTech Connect

    Elliott, L.J.; Baron, S.

    1991-02-01

    In response to a request submitted by teachers and the principal of the Andrew Jackson Junior High School (SIC-8211) in Cross Lanes, West Virginia, an evaluation was undertaken of possible hazardous conditions at the site. The symptoms experienced by the teachers included numbness and tingling of the extremities, upper airway irritation, eye irritation, inability to concentrate, and comfort complaints of too hot and too cold. The single story school building was constructed as an open space classroom configuration. It was heated, cooled and ventilated by nine individual roof mounted air handling units with ducted air supply. The false ceiling space served as the return air duct to the system. During 1981 to 1983 this open space was converted to approximately 30 classroom areas by erecting walls. The heating, ventilation, and air conditioning systems were modified only by adding a false ceiling return air plenum to accommodate the space conversion. The school had been treated for termite infestation by sub slab injection of chlordane (57749) and direct in room application of chlorpyrifos (2921882) (Dursban) and Diazinon (333415). Fluorescent light ballast burn outs over several years introduced Aroclor-1254 (11097691) into the building which was not effectively removed by the ventilation system. Several class rooms also registered too high for carbon-dioxide (124389) concentration, temperature and humidity levels. Recommendations were made to reduce the exposure potential to chlordane and Aroclor-1254, improve the ventilation of the classrooms, and improve the indoor air quality of the school.

  6. Lessons learned from Hurricane Andrew: recommendations for care of the elderly in long-term care facilities.

    PubMed

    Silverman, M A; Weston, M; Llorente, M; Beber, C; Tam, R

    1995-06-01

    We report on the experience of a 500-bed, long-term care facility in Miami, Fla, which provides housing and nursing care units for patients--ranging from those who are independently ambulatory to those who are acutely ill and feeble--in preparing for, during, and in the immediate aftermath of Hurricane Andrew, which struck on August 24, 1992. The problems encountered included a massive influx of evacuated elderly to the facility, facility isolation, loss of electrical power, loss of running water, special dietary needs, and limited professional staffing due to personal property losses or loss of transportation. Overwhelmed county emergency medical services, limited access to hospitals and patient care, and difficulty in procuring supplies exacerbated the already complicated situation resulting from the storm. As a result of these catastrophic conditions, a number of challenges specific to the care of the elderly were identified. In conjunction with the Florida Department of Elder Affairs, we drafted a comprehensive blueprint that could serve as a disaster plan for other long-term care facilities facing a similar threat during the hurricane season.

  7. TRIGGER SELF-CONTROL AND SEIZURE ARREST IN THE ANDREWS/REITER BEHAVIORAL APPROACH TO EPILEPSY: A RETROSPECTIVE ANALYSIS OF SEIZURE FREQUENCY

    PubMed Central

    Michaelis, Rosa; Schonfeld, Warren; Elsas, Siegward-M.

    2012-01-01

    The aim of this retrospective study is to describe changes of seizure frequency in epilepsy patients who participated in the Andrews/Reiter behavioral intervention for epilepsy. For this uncontrolled retrospective study, data was extracted from patients’ medical journals. Intention-to-treat-analyses were restricted to patients with sufficient documentation supporting a diagnosis of probable or definite epilepsy. Main outcome variable was a comparison of mean seizure frequency at baseline and towards completion of the program. The seizure frequency of 30 (50%%) patients showed a clinically meaningful improvement (>50% reduction of seizures) towards the end of the intervention. Twenty-two (37%) patients became seizure-free at the end of the intervention. In summary, a clinically meaningful reduction in reported seizure frequency was observed in epilepsy patients who received the Andrews/Reiter intervention for epilepsy. Prospective trials are needed to further investigate the program’s efficacy and to study epileptic seizure triggers. PMID:22341960

  8. Book Review — Engines of Discovery: A Century of Particle Accelerators (Revised and Expanded Edition, by Andrew Sessler and Edmund Wilson, World Scientific, 2007)

    NASA Astrophysics Data System (ADS)

    Barletta, William A.

    In the first edition of Engines of Discovery. Andrew Sessler and Edmund Wilson presented their compelling case for considering particle accelerators to be the most readily recognizable characteristic of "big science." That book, written in highly readable language, aimed at illuminating the rich and expanding dimensions of an intellectual enterprise that remains far too little known to the general public and even to many academics outside of the scientific fields dominated by accelerators as their most consequential single research tool…

  9. Parity oscillations and photon correlation functions in the Z2-U (1 ) Dicke model at a finite number of atoms or qubits

    NASA Astrophysics Data System (ADS)

    Yi-Xiang, Yu; Ye, Jinwu; Zhang, CunLin

    2016-08-01

    Four standard quantum optics models, that is, the Rabi, Dicke, Jaynes-Cummings, and Tavis-Cummings models, were proposed by physicists many decades ago. Despite their relative simple forms and many previous theoretical works, their physics at a finite N , especially inside the superradiant regime, remain unknown. In this work, by using the strong-coupling expansion and exact diagonalization (ED), we study the Z2-U(1 ) Dicke model with independent rotating-wave coupling g and counterrotating-wave coupling g' at a finite N . This model includes the four standard quantum optics models as its various special limits. We show that in the superradiant phase, the system's energy levels are grouped into doublets with even and odd parity. Any anisotropy β =g'/g ≠1 leads to the oscillation of parities in both the ground and excited doublets as the atom-photon coupling strength increases. The oscillations will be pushed to the infinite coupling strength in the isotropic Z2 limit β =1 . We find nearly perfect agreement between the strong-coupling expansion and the ED in the superradiant regime when β is not too small. We also compute the photon correlation functions, squeezing spectrum, and number correlation functions that can be measured by various standard optical techniques.

  10. Superfund Record of Decision (EPA Region 3): William Dick Lagoons, West Caln Township, Chester County, PA. (First remedial action), June 1991

    SciTech Connect

    Not Available

    1991-09-28

    The 4.4-acre William Dick Lagoons site is a chemical wastewater disposal site in West Caln Township, Chester County, Pennsylvania. An estimated 30 residences located within 1,000 feet of the site use private wells for their drinking water supply. Two other Superfund sites are near the site. From the 1950's to 1970, Mr. William Dick used the lagoons to dispose of wastewater left from cleaning the interiors of chemical and petroleum tank trailers owned primarily by Chemical Leaman Tank Lines, (CLTL), and residual chemical products. Later in 1970, vandalism caused the release of an estimated 300,000 gallons of wastewater into Birch Run, a tributary of the West Branch of Brandywine Creek. As a result of this discharge, more than 2,600 fish died, and water supplies that used Brandywine Creek as a water source were closed. The Record of Decision (ROD) provides an interim remedy and addresses contaminated residential water as Operable Unit 1 (OU1) and ground water as OU2. A future ROD will address source control and will provide a remedy for the cleanup of contaminated soil. The primary contaminants of concern affecting the ground water are VOCs including benzene, PCE, and TCE; other organics including phenols; and metals. The selected remedial action for the site is included.

  11. Dick Crane's California Days

    NASA Astrophysics Data System (ADS)

    Holbrow, Charles H.

    2011-03-01

    Horace Richard Crane (1907-2007) was born and educated in California. His childhood was full of activities that helped him become an outstanding experimental physicist. As a graduate student at the California Institute of Technology (1930-1934), he had the good fortune to work with Charles C. Lauritsen (1892-1968) just as he introduced accelerator-based nuclear physics to Caltech. They shared the euphoric excitement of opening up a new field with simple, ingenious apparatus and experiments. This work prepared Crane for his career at the University of Michigan (1935-1973) where in the 1950s, after making the first measurement of the electron's magnetic moment, he devised the g-2 technique and made the first measurement of the anomaly in the electron's magnetic moment. A man of direct, almost laconic style, he made lasting contributions to the exposition of physics to the general public and to its teaching in high schools, community colleges, four-year colleges, and universities. I tell how he became a physicist and describe some of his early achievements.

  12. Dicke, Robert Henry (1916-)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Physicist, born in St Louis, MO, professor at Princeton (1946-84). He did not believe EINSTEIN's general theory of relativity and conducted numerous experiments to challenge its famous tests. He attempted to determine whether the Sun was oblate (squashed at the poles) and could thus cause alterations to the orbit of Mercury which had been interpreted in Einstein's favor. He re- measured the gravi...

  13. Methods to recover the narrow Dicke sub-Doppler feature in evacuated wall-coated cells without restrictions on cell size

    NASA Technical Reports Server (NTRS)

    Robinson, H. G.

    1984-01-01

    The hyperfine resonance observed in evacuated wall-coated cells with dimensions lambda/2 (lambda is the hyperfine resonance wavelength) consists of a narrow Dicke sub-Doppler linewidth feature, the spike, superimposed on a broad pedestal. The hydrogen maser provides a classic example of this lineshape. As cell size is increased, an effect unique to evacuated wall-coated cells occurs. Certain combinations of microwave field distribution and cell size result in a lineshape having a pedestal with a small spike feature or only the broad pedestal with no spike. Such conditions are not appropriate for atomic frequency standard applications. The cause of the evacuated wall-coated cell lineshape is reviewed and methods to recover the narrow spike feature without restrictions on cell size is discussed. One example is a cell with dimensions having equal volumes of exposure to opposite phases of the microwave magnetic field.

  14. Nomina nova in Platyhelminthes pro Macrorhynchus von Graff, 1882 (non [Gmelin, 1801]; non Dunker, 1843), and Leptocleidus Mueller, 1936 (non Andrews, 1922).

    PubMed

    Hornung, Jahn J

    2016-08-19

    Two genus-group names of flat-worms-Leptocleidus Mueller, 1936 and Macrorhynchus von Graff, 1882-are junior homonyms that are preoccupied by fossil diapsid reptile genera-Leptocleidus Andrews, 1922, and Macrorhynchus Dunker, 1843-and an extant teleost fish genus-Macrorhynchus [Gmelin, 1801] ex La Cépède, 1800. These are replaced by nomina nova (Pharyngodytes nom. nov.; Graffiellus nom. nov.). Macrorhynchus [Gmelin, 1801] is an objective senior synonym of Macrorhyncus Dumeríl, 1805 ex La Cépède, 1800 (syn. nov.), and a senior homonym of Macrorhynchus Dunker, 1843, and Macrorhynchus von Graff, 1882.

  15. Hurricane Frederic tidal floods of September 12-13, 1979, along the Gulf Coast, Pine Beach, St. Andrews Bay and Fort Morgan quadrangles, Alabama

    USGS Publications Warehouse

    Scott, John C.; Bohman, Larry R.

    1980-01-01

    Shown on a topographic map are floodmark elevations and approximate areas flooded by Hurricane Frederic tides of September 12-13, 1979, along the shores of St. Andrews Bay, Mobile Bay, and Bon Secour Bay from Fort Morgan eastward to about four miles east of Gasque, Ala. The storm tide went completely across the land between the beach and Mobile Bay throughout much of the area. Most homes on the beach side of Alabama State Highway 180 were completely destroyed, and the highway was washed out in several places. Damage to homes and other structures on the bay side was not as great. Storm-tide frequency and records of annual maximum tides at Mobile, Ala., since 1772, are presented. Offshore winds reached about 160 miles per hour. A wind-velocity of about 145 miles per hour was recorded near Dauphin Island, Ala. (USGS)

  16. Enrico Fermi Awards Ceremony for Dr. Allen J. Bard and Dr. Andrew Sessler, February 2014 (Presentations, including remarks by Energy Secretary, Dr. Ernest Moniz)

    ScienceCinema

    Moniz, Ernest [U.S. Energy Secretary

    2016-07-12

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On February 3, 2014 it was conferred upon two exceptional scientists. The first to be recognized is Dr. Allen J. Bard, 'for international leadership in electrochemical science and technology, for advances in photoelectrochemistry and photocatalytic materials, processes, and devices, and for discovery and development of electrochemical methods including electrogenerated chemiluminescence and scanning electrochemical microscopy.' The other honoree is Dr. Andrew Sessler, 'for advancing accelerators as powerful tools of scientific discovery, for visionary direction of the research enterprise focused on challenges in energy and the environment, and for championing outreach and freedom of scientific inquiry worldwide.' Dr. Patricia Dehmer opened the ceremony, and Dr. Ernest Moniz presented the awards.

  17. Enrico Fermi Awards Ceremony for Dr. Allen J. Bard and Dr. Andrew Sessler, February 2014 (Presentations, including remarks by Energy Secretary, Dr. Ernest Moniz)

    SciTech Connect

    Moniz, Ernest

    2014-02-03

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On February 3, 2014 it was conferred upon two exceptional scientists. The first to be recognized is Dr. Allen J. Bard, 'for international leadership in electrochemical science and technology, for advances in photoelectrochemistry and photocatalytic materials, processes, and devices, and for discovery and development of electrochemical methods including electrogenerated chemiluminescence and scanning electrochemical microscopy.' The other honoree is Dr. Andrew Sessler, 'for advancing accelerators as powerful tools of scientific discovery, for visionary direction of the research enterprise focused on challenges in energy and the environment, and for championing outreach and freedom of scientific inquiry worldwide.' Dr. Patricia Dehmer opened the ceremony, and Dr. Ernest Moniz presented the awards.

  18. A survey of culturable aerobic and anaerobic marine bacteria in de novo biofilm formation on natural substrates in St. Andrews Bay, Scotland.

    PubMed

    Finnegan, Lucy; Garcia-Melgares, Manuel; Gmerek, Tomasz; Huddleston, W Ryan; Palmer, Alexander; Robertson, Andrew; Shapiro, Sarah; Unkles, Shiela E

    2011-10-01

    This study reports a novel study of marine biofilm formation comprising aerobic and anaerobic bacteria. Samples of quartz and feldspar, minerals commonly found on the earth, were suspended 5 m deep in the North Sea off the east coast of St. Andrews, Scotland for 5 weeks. The assemblage of organisms attached to these stones was cultivated under aerobic and anaerobic conditions in the laboratory. Bacteria isolated on Marine Agar 2216 were all Gram-negative and identified to genus level by sequencing the gene encoding 16S rRNA. Colwellia, Maribacter, Pseudoaltermonas and Shewanella were observed in aerobically-grown cultures while Vibrio was found to be present in both aerobic and anaerobic cultures. The obligate anaerobic bacterium Psychrilyobacter atlanticus, a recently defined genus, was identified as a close relative of isolates grown anaerobically. The results provide valuable information as to the main players that attach and form de novo biofilms on common minerals in sea water.

  19. Book Review: Maxwell's Demon 2: Entropy, classical and quantum information, computing. Harvey Leff and Andrew Rex (Eds.); Institute of Physics, Bristol, 2003, 500pp., US 55, ISBN 0750307595

    NASA Astrophysics Data System (ADS)

    Shenker, Orly R.

    2004-09-01

    In 1867, James Clerk Maxwell proposed a perpetuum mobile of the second kind, that is, a counter example for the Second Law of thermodynamics, which came to be known as "Maxwell's Demon." Unlike any other perpetual motion machine, this one escaped attempts by the best scientists and philosophers to show that the Second Law or its statistical mechanical counterparts are universal after all. "Maxwell's demon lives on. After more than 130 years of uncertain life and at least two pronouncements of death, this fanciful character seems more vibrant than ever." These words of Harvey Leff and Andrew Rex (1990), which open their introduction to Maxwell's Demon 2: Entropy, Classical and Quantum Information, Computing (hereafter MD2) are very true: the Demon is as challenging and as intriguing as ever, and forces us to think and rethink about the foundations of thermodynamics and of statistical mechanics.

  20. The impact of Hurricane Andrew on deviant behavior among a multi-racial/ethnic sample of adolescents in Dade County, Florida: a longitudinal analysis.

    PubMed

    Khoury, E L; Warheit, G J; Hargrove, M C; Zimmerman, R S; Vega, W A; Gil, A G

    1997-01-01

    Findings from a longitudinal study are presented on the relationships between the problems and stresses resulting from Hurricane Andrew and posthurricane minor deviant behavior. The sample (N = 4,978) included Hispanic, African-American, and White non-Hispanic middle school students enrolled in Dade County, Florida public schools. Two waves of data were collected prior to the hurricane; a third was obtained approximately 6 months following the storm. Results indicated that females were likely to report higher levels of hurricane-related stress symptoms than males. After controlling for prehurricane levels of minor deviance, family support, and race/ethnicity, hurricane stress symptom level remained a significant predictor of posthurricane minor deviant behavior. The findings lend support to stress theories of social deviance.

  1. Reduction of Systematic Errors in Diagnostic Receivers Through the Use of Balanced Dicke-Switching and Y-Factor Noise Calibrations

    SciTech Connect

    John Musson, Trent Allison, Roger Flood, Jianxun Yan

    2009-05-01

    Receivers designed for diagnostic applications range from those having moderate sensitivity to those possessing large dynamic range. Digital receivers have a dynamic range which are a function of the number of bits represented by the ADC and subsequent processing. If some of this range is sacrificed for extreme sensitivity, noise power can then be used to perform two-point load calibrations. Since load temperatures can be precisely determined, the receiver can be quickly and accurately characterized; minute changes in system gain can then be detected, and systematic errors corrected. In addition, using receiver pairs in a balanced approach to measuring X+, X-, Y+, Y-, reduces systematic offset errors from non-identical system gains, and changes in system performance. This paper describes and demonstrates a balanced BPM-style diagnostic receiver, employing Dicke-switching to establish and maintain real-time system calibration. Benefits of such a receiver include wide bandwidth, solid absolute accuracy, improved position accuracy, and phase-sensitive measurements. System description, static and dynamic modelling, and measurement data are presented.

  2. Evolution of the Universe within the framework of the modified Jordan-Brans-Dicke theory: The role of the cosmological scalar

    NASA Astrophysics Data System (ADS)

    Chubaryan, Edvard; Avagyan, Roland; Harutunyan, Gohar; Kotanjyan, Anna

    2016-07-01

    Early and late stages of the cosmological expansion are considered on the base of the modified Jordan-Brans-Dicke (JBD) theory, under the assumption φ(y)=αH ^{n} (H is the Hubble constant, n is a parameter equal to four in the inflationary stage and one or two at late stages of the Universe evolution). At late stages, dynamical pattern is obtained with uniformly accelerated expansion for different values of σ (σ is the coupling constant between the gravitational and scalar fields). It is remarkable that for the limiting allowed value of α=9/(2σ) and for large σ, this variant of the theory is equivalent to the de Sitter model in the framework of the Einstein theory in the presence of a scalar field φ(y)=αH ^{2}. Therefore, the quasi exponential growth of the scale factor in the limiting case becomes purely exponential. Note that in the previously considered models the behavior of α was a power law. We also consider the inflationary regime with φ(y)=αH ^{4}. It is shown that in this case a model with slow rolling can be constructed.

  3. Preparation of culinary-medicinal maitake mushroom, Grifola frondosa (Dicks.: Fr.) S.F. Gray (Aphyllophoromycetideae)-fermented wheat and its antioxidant properties.

    PubMed

    Huang, Shih-Jeng; Tsai, Shu-Yao; Lin, Shin-Yi; Liang, Chih-Hung; Lian, Pei-Ying; Mau, Jeng-Leun

    2011-01-01

    The optimization of solid-state fermentation conditions for mycelial growth in wheat by culinary-medicinal maitake mushroom, Grifola frondosa (Dicks.: Fr.) S.F. Gray was studied. The results from the center of the design analysis showed that the recommended optimal conditions for carbon, nitrogen sources, and temperature were 19 mg lactose/g, 2.0 mg malt extract/g, and 30 degrees C, respectively. Under these conditions, the mycelial biomass of 533.1 mg/g was obtained in fermented wheat, comparable to that (545.7 mg/g) obtained using the one-factor-at-a-time method. Based on the results obtained, EC50 values of ethanolic and hot water extracts from fermented wheat were 1.13-15.27 mg/mL, indicating that fermented wheat was effective in antioxidant activity, reducing power, scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals, and chelating ability on ferrous ions. Total phenol contents of both extracts were 13.35 and 23.01 mg/g, respectively. Accordingly, the information obtained would be applicable for the cultivation and consumption of G. frondosa-fermented wheat to provide its beneficial health effects.

  4. A sky temperature survey at 19.2 GHz using a balloon borne Dicke radiometer for anisotropy tests of the cosmic microwave background

    NASA Astrophysics Data System (ADS)

    Cottingham, David A.

    A large area sky survey at a resolution of 3 degrees carried out with a balloon-borne Dicke radiometer using a liquid helium cooled ruby maser amplifier is described. The instrument and method of observation are described. The data from one flight of the instrument are analyzed to produce a map of sky temperature covering roughly declination -15 to +75 degrees and right ascension 7 to 23 h at a typical sensitivity of 1.5 mK per 3 degrees resolution element. The calibration of this map in terms of antenna temperature is accurate to 3 percent. Analysis of the sky map indicates that the components of the dipole anisotropy of the cosmic microwave background (CMB) are (in thermodynamic temperature) Taux = -3.46 + or - 0.09 mK, Tauy = 0.41 + or - 0.07 mK, Tauz = -0.50 + or - 0.08 mK, implying that the magnitude is Tau = 3.52 + or - 0.08 mK and has its bright pole at alpha = 11 h 33 m + or - 6 m, delta + -8.2 deg + or - 1.5 deg (statistical errors). These data place an upper bound of delta T/T less than .0002 (95 percent confidence level) on anisotropy of the CMB other than the dipole at all angular scales greater than 3 degrees.

  5. An Analysis and Comparison of Two Short Writings: "Inaugural Address at the University of St. Andrew's" by J.S. Mill and "The University of Utopia" by R.M. Hutchins, Based on Five Criteria.

    ERIC Educational Resources Information Center

    Poirier, Jeannine M.

    Focusing on the concept of education for work vs. education for living, the author presents a comparative analysis of two works on liberal education, each of which was originally delivered orally to university students: "The Inaugural Address at the University of St. Andrew" by John Stuart Mill and "The University of Utopia" by…

  6. An Analysis and Comparison of Two Short Writings: "Inaugural Address at the University of St. Andrew's" by J.S. Mill and "The University of Utopia" by R.M. Hutchins, Based on Five Criteria.

    ERIC Educational Resources Information Center

    Poirier, Jeannine M.

    Focusing on the concept of education for work vs. education for living, the author presents a comparative analysis of two works on liberal education, each of which was originally delivered orally to university students: "The Inaugural Address at the University of St. Andrew" by John Stuart Mill and "The University of Utopia" by…

  7. Summary of the watershed-landscape analysis workshop: h. j. andrews experimental forest. Held in Blue River, Oregon on February 2-4, 1994. Forest Service general technical report

    SciTech Connect

    Grant, G.; McCain, C.; Cissel, J.

    1994-08-01

    The document summarizes the results of the watershed and landscape analysis workshop held at the H.J. Andrews Experimental Forest in February 1994. Five examples of watershed analyses conducted on public and private lands in the Pacific Northwest are described and critiqued, and future direction for watershed analysis on Federal lands is discussed.

  8. Molecular analysis of abnormal hemoglobins in beta chain in Aegean region of Turkey and first reports of hemoglobin Andrew-Minneapolis and Hb Hinsdale from Turkey.

    PubMed

    Aykut, Ayça; Onay, Hüseyin; Durmaz, Asude; Karaca, Emin; Vergin, Canan; Aydınok, Yeşim; Özkınay, Ferda

    2015-07-01

    The Agean is one of the regions in Turkey where thalassemias and abnormal hemoglobins (Hbs) are prevalent. Combined heterozygosity of thalassemia mutations with a variety of structural Hb variants lead to an extremely wide spectrum of clinical and hematological phenotypes which is of importance for prenatal diagnosis. One hundred and seventeen patients and carriers diagnosed by hemoglobin electrophoresis (HPLC), at risk for abnormal hemoglobinopathies were screened for mutational analysis of the beta-globin gene. The full coding the 5' UTR, and the 3' UTR sequences of beta-globin gene (GenBank accession no. U01317) were amplified and sequenced. In this study, a total of 118 (12.24%) structural Hb variant alleles were identified in 1341 mutated beta-chain alleles in Medical Genetics Department of Ege University between January 2006 and November 2013. Here, we report the mutation spectrum of abnormal Hbs associated with the beta-globin gene in Aegean region of Turkey. In the present study, the Hb Hinsdale and Hb Andrew-Minneapolis variants are demonstrated for the first time in the Turkish population.

  9. Principal component and Tucker3 analyses of high performance liquid chromatography with diode-array detection fingerprints of crude extracts of Erythrina speciosa Andrews leaves.

    PubMed

    Soares, Patricia Kaori; Bruns, Roy Edward; Scarminio, Ieda Spacino

    2012-07-29

    Mixtures of ethanol, dichloromethane, hexane and acetone obtained according to a statistical design have been used to extract substances from Erythrina speciosa Andrew leaves for chromatographic fingerprinting. The plant extracts from each mixture were analyzed by HPLC-DAD providing UV-vis spectra for each chromatographic peak. These chromatograms and spectra for the design mixtures were then treated with principal component (PCA), Tucker3 and PARAFAC analyses. PCA indicated the existence of five different chromatographic fingerprints for the leave extracts depending on the solvent mixture composition. Different chromatographic peak areas were strongly correlated with the mixture proportions of acetone, dichloromethane and ethanol. Tucker3 and PARAFAC analyses were very useful for identifying simultaneous correlations between chromatographic peak areas, spectral band absorbances and solvent proportions. The acetone proportion was highly correlated with the area of the 3.69 min retention time peak and the spectral absorbances between 250 and 260 nm, consistent with the presence of natural polyphenols. The dichloromethane mixture proportion was strongly correlated with the 12.19 min chromatographic peak area and a single spectral absorbance at 201 nm. This spectral absorption is characteristic of the electronic structures of terpenes and alkaloids.

  10. Geographic variation in life-history traits: growth season affects age structure, egg size and clutch size in Andrew's toad (Bufo andrewsi).

    PubMed

    Liao, Wen Bo; Luo, Yi; Lou, Shang Ling; Lu, Di; Jehle, Robert

    2016-01-01

    Environmental variation associated with season length is likely to promote differentiation in life-history traits, but has been little studied in natural populations of ectotherms. We investigated patterns of variation in egg size, clutch size, age at sexual maturity, maximum age, mean age, growth rate and adult body size in relation to growth season length among 17 populations of Andrew's toad (Bufo andrewsi) at different latitudes and altitudes in the Hengduan Mountains, western China. We found that egg size, age at sexual maturity, and mean age increased with decreasing length of the growth season, whereas clutch size showed a converse cline. Body size did not increase with decreasing length of the growth season, but was tightly linked to lifetime activity (i.e. the estimated number of active days during lifetime). Males and females differed in their patterns of geographic variation in growth rates, which may be the result of forces shaping the trade-off between growth and reproduction in different environments. Our findings suggest that growth season plays an important role in shaping variation in life-history traits in B. andrewsi across geographical gradients.

  11. Small-scale variations of climate change in mountainous forested terrain - a regional study from H.J. Andrews Long Term Ecological Research site in Oregon, USA

    NASA Astrophysics Data System (ADS)

    Honzakova, Katerina; Hoffmann, Peter; Jones, Julia; Thomas, Christoph

    2017-04-01

    There has been conflicting evidence as to whether high elevations are experiencing more pronounced climate warming than lower elevations in mountainous regions. In this study we analyze temperature records from H.J. Andrews Long Term Ecological Research, Oregon, USA and several nearby areas, comprising together 28 stations located in Cascade Mountains. The data, starting in 1958, are first checked for quality and homogenized using the Standard Normal Homogeneity Test. As a reference, composite climate time series based on the Global Historic Climate Network is created and together with cross-referencing against station records used to correct breaks and shifts in the data. In the next step, we investigate temperature patterns of the study site from 1958 to 2016 and compare them for valley and hill stations. In particular, we explore seasonality and inter-annual variability of the records and trends of the last day of frost. Additionally, 'cold' sums (positive and negative) are calculated to obtain a link between temperature and ecosystems' responses (such as budbreaks). So far, valley stations seem to be more prone to climate change than ridge or summit stations, contrary to current thinking. Building on previous knowledge, we attempt to provide physical explanations for the temperature records, focusing on wind patterns and associated phenomena such as cold air drainage and pooling. To aid this we analyze wind speed and direction data available for some of the stations since 1996, including seasonality and inter-annual variability of the observed flows.

  12. Thirty-year trends in incidence and age-distribution of prostate cancer in Kingston and St Andrew, Jamaica, 1978-2007.

    PubMed

    Gibson, T N; Hanchard, B; Waugh, N; McNaughton, D

    2011-01-01

    To investigate the trends in incidence and age-distribution of prostate cancer in Kingston and St Andrew (KSA), Jamaica, over the 30-year period 1978-2007. From published Jamaica Cancer Registry (JCR) data, we extracted age-standardized rates of prostate cancer for the six 5-year reporting periods that comprised the 30-year study span, and from the archived files of the JCR, the patient ages at diagnosis for all prostate cancer cases recorded over the 30-year period were extracted. The results were compared with data from other black populations. The incidence of prostate cancer in KSA, Jamaica, is lower than that in black men in the United States and United Kingdom. The KSA incidence showed a progressive increase since the 1983-1987 reporting period, and the greatest 5-year percentage increases were seen over the period 1983 to 1997. Men in the 60-74-year age group were the commonest contributors to prostate cancer total in all 5-year periods examined, and between 1988 and 2007, there were increases in the proportionate contributions from the 25-59 and 60-74-year age groups, and a decrease in contribution from men aged 75 years and older. The incidence of prostate cancer in KSA, Jamaica, has been progressively increasing since 1983, and there has been a concomitant increase in the proportionate contribution from younger men. Continued increase is likely over the next several years, but KSA currently appears to be a relatively low-risk region for prostate cancer, compared to black populations in developed Western countries.

  13. Spatial distribution and compositional variation of APS minerals related to uranium deposits in the Kiggavik-Andrew Lake structural trend, Nunavut, Canada

    NASA Astrophysics Data System (ADS)

    Riegler, Thomas; Quirt, Dave; Beaufort, Daniel

    2016-02-01

    The Kiggavik-Andrew Lake structural trend consists of four mineralized zones, partially outcropping, lying 2 km south of the erosional contact with the unmetamorphosed sandstone and basal conglomerates of the Paleoproterozoic Thelon Formation. The mineralization is controlled by a major E-W fault system associated with illite and sudoite alteration halos developed in the Archean metagraywackes of the Woodburn Lake Group. Aluminum phosphate sulfate (APS) minerals from the alunite group crystallized in association with the clay minerals in the basement alteration halo as well as in the overlying sandstones, which underwent mostly diagenesis. APS minerals are Sr- and S-rich (svanbergite end-member) in the sedimentary cover overlying the unconformity, whereas they are light rare earth elements (LREE)-rich (florencite end-member) in the altered basement rocks below the unconformity. The geochemical signature of each group of APS minerals together with the petrography indicates three distinct generations of APS minerals related to the following: (1) paleoweathering of continental surfaces prior to the basin occurrence, (2) diagenetic processes during the burial history of the lower unit of the Thelon sandstones, and (3) hydrothermal alteration processes which accompanied the uranium deposition in the basement rocks and partially overlap the sedimentary-diagenetic mineral parageneses. In addition, the association of a first generation of APS minerals with both detrital cerium oxide and aluminum oxy-hydroxide highlights the fact that a part of the detrital material of the basal Thelon Formation originated from eroded paleolaterite (allochthonous regolith). The primary rare earth element (REE)-bearing minerals (e.g., monazite, REE carbonates, and allanite) of the host rocks were characterized to identify the potential sources of REE. The REE chemical composition highlights a local re-incorporation of the REE released from the alteration processes in the APS minerals of

  14. Hydrologic and forest management controls on DOC dynamics in the small watersheds of the H.J. Andrews Experimental Forest, OR

    NASA Astrophysics Data System (ADS)

    Lajtha, K.; Jones, J. A.

    2016-12-01

    Dissolved organic carbon (DOC) export from hillslopes to streams is an important component of the carbon cycle of a catchment and may be a critical source of energy for the aquatic food web in receiving waters. Using a long-term record of DOC and other dissolved nutrients and elements from paired watersheds from the H.J. Andrews Experimental Forest in Oregon, we explored hydrologic, climatic, and land-use controls on seasonal and inter-annual patterns of DOC flux in a seasonally dry ecosystem. Seasonal patterns of DOC flux demonstrated source limitations to DOC export, with DOC concentrations highest immediately following the first rains after a dry summer, and lowest after winter rains. In contrast, more geochemically-controlled elements showed simple dilution-concentration patterns with no seasonal hysteresis. Inter-annual patterns of DOC flux, however, did not provide evidence of source limitation, with DOC flux within a watershed tightly correlated to total discharge but not temperature. Among watersheds, forest harvest, even over 50 years ago, significantly reduced DOC flux but not fluxes of other elements including N; this response was linked to the loading of coarse woody debris to the forest floor. Chemical fingerprinting of DOC revealed that old-growth watersheds had higher fluxes of DOC characteristic of forest floor organic materials, likely delivered to streams through more surficial preferential flow pathways not subject to microbial alteration, respiration, or sorption losses. Taken together these results suggest that the biogeochemical composition of forested streams reflects both current hydrologic patterns and also processes that occurred many decades ago within the catchment.

  15. Computer Modeling of Hydrology, Weathering, and Isotopic Fractionation in Andrews Creek, Rocky Mountain National Park, Colorado for Water Years 1992 through 2012

    NASA Astrophysics Data System (ADS)

    Webb, R. M. T.; Parkhurst, D. L.; Mast, A.; Clow, D. W.

    2014-12-01

    The U.S. Geological Survey's (USGS) Water, Energy, and Biogeochemical Model (WEBMOD) was used to simulate hydrology, weathering, and isotopic fractionation in the 1.7 square kilometer Andrews Creek alpine watershed. WEBMOD includes hydrologic modules derived from the USGS Precipitation Runoff Modeling System, the National Weather Service Hydro-17 snow model, and TOPMODEL. PHREEQC, a geochemical reaction model, is coupled with the hydrologic model to simulate the geochemical evolution of waters as they evaporate, mix, and react within the landscape. Major solute concentrations and δ18O were modeled over the period 1992-2012. Variations of chloride and inorganic nitrogen respond almost entirely to variations in atmospheric deposition and preferential elution of snowpack. Both evaporation and melting result in isotopic enrichment of heavy isotopes in the residual snowpack throughout the summer. Magnesium and potassium, derived mostly from weathering with some atmospheric inputs, vary seasonally with uptake during the growing season and release during the fall and winter. The weathering of granitic minerals—oligoclase, biotite, chlorite, pyrite, calcite, and formation of secondary minerals—kaolinite, goethite, gibbsite, and smectite-illite—were selected as primary reactions based on mole-balance modeling of basin outflows. The rates of these reactions were quantified by calibrating WEBMOD to match observed concentrations and loads. Exported annual loads of most weathering products are highly correlated with discharge, whereas silica loads are less correlated with discharge, suggesting a source that is more active during dry years and less active during wet years. Potential sources include net dissolution of kaolinite and smectite-illite or mineralization of colloids with high silica content. WEBMOD is a valuable tool for simulating water quality variations in response to climate change, acid mine drainage, acid rain, biological transformations, and other

  16. Hyporheic Geophysics: D.C. Resistivity Imaging of Valley-bottom Alluvium in a 3rd-order Mountain Stream, HJ Andrews Experimental Forest, Oregon, USA

    NASA Astrophysics Data System (ADS)

    Zarnetske, J. P.; Haggerty, R.; Crook, N.; Robinson, D. A.

    2006-12-01

    The hyporheic zone (HZ) can serve as either a source or a sink for nutrients (e.g., nitrogen) and moderates biogeochemical and temperature signals in stream ecosystems. Understanding of the HZ is hampered by lack of subsurface images, particularly ones that are non-invasive and fast. Geophysical imaging, combined with extant empirical methods and hydrodynamic models provides an opportunity to improve precision in modeling HZ transport and nutrient retention. With the aid of CUAHSI HMF, we completed a d.c. resistivity survey of an existing stream denitrification study site (Mack Creek, H.J. Andrews Experimental Forest, OR, a Long-term Ecological Research site) to quantify the geometry of the valley bottom alluvial aquifer and HZ. The non- invasive d.c. resistivity survey successfully produced a quantitative 3-dimensional image of the variable alluvial aquifer thickness below and adjacent to the stream channel. We extensively imaged one area, 50 m x 28 m with 10 transects, in an old growth Douglas fir (Pseudotsuga menziesii) stand which incorporated a large woody debris log jam, to determine that alluvial thickness averages 4.1 m and varies between 0 m and 8 m. We completed a single 50 m longitudinal section in an adjacent downstream logged block (harvested 1964-65) to determine that alluvial thickness averages 0.3 m and varies between 0 m and 1 m. The presence of valley- bottom bedrock exposures at the study site helped to constrain and verify the d.c. resistivity interpretation of the bedrock-alluvium interface. Some d.c. survey challenges were encountered, including the confinement of electrode lines to the channel or near channel because dry organic layers or fallen trees across much of the forest floor prevented good electrode contact with the ground. Ultimately, this geophysics-enhanced knowledge of the stream-adjacent aquifer will allow for more accurate interpretation of hyporheic observations and parameterization of hyporheic hydraulic and denitrification

  17. Interview with Andrew C. Kadak

    SciTech Connect

    Schabes, D.

    1996-01-01

    This article is an interview with the president and Chief Executive Officer of the Yankee Atomic Electric Company about a wide variety of aspects of the decommissioning of the Yankee Nuclear Power plant. Included are discussions of political aspects, decommissioning schedules, local impacts, technical issues of decommissioning, personnel management during decommissioning, etc.

  18. Deep versus shallow melt stagnation in an ultra-slow / ultra-cold ridge segment: the Andrew Bain southern RTI (SWIR)

    NASA Astrophysics Data System (ADS)

    Paganelli, E.; Brunelli, D.; Seyler, M.; Bonatti, E.; Cipriani, A.; Ligi, M.

    2011-12-01

    The Andrew Bain Fracture Zone (ABFZ) represents one of the largest transform faults in the ridge system spanning 750 km in length with a characteristic lens-shape structure. The southern Ridge-Transform Intersection represents the deepest sector of the whole South West Indian Ridge system. During the Italian-Russian expedition S23-AB06, the seafloor in the Southern Ridge Transform Intersection (RTI) has been sampled recovering only ultramafic material in the majority of the dredging sites. The sampled spinel and plagioclase peridotites show hybrid textures, characterized either by deep spinel-field impregnation assemblages (sp+cpx±opx±ol) or by plagioclase-field equilibrated patches and mineral trails (pl+cpx±ol) marked by both crystallization of newly formed plagioclase-field equilibrated trails and formation of plagioclase coronas around spinel. The ones collected from ridge axis show also late gabbroic pockets and veins, variably enriched in clinopyroxene. Overall textures account for important melt percolation/stagnation events occurred in the plagioclase and spinel field. Major and trace element distribution in pyroxenes and spinels from spinel-bearing peridotites overall follow a general melting trend accompanied by a progressive re-equilibration to lower P/T facies at all scales. However, only few samples can be linked to near fractional melting, while the majority of them shows REE pattern and trace element concentrations that cannot be reproduced by fractional melting process. Open-system melting (OSM) better reproduces measured REE patterns. Modeling melting in an open system scenario requires high residual porosity to be accounted for along with generally enriched melts to influx the melting parcel at depth. Melting at high residual porosity suggests a near-batch regime in which enriched melts stagnate in the spinel field. Inhibition of melt segregation during melt/rock interaction asks for a permeability barrier to develop in the region where the

  19. Spatial and Temporal Trends in the Carbon, Nitrogen, and Sulfur Isotopes of Stream DOM From 10 Watersheds at the HJ Andrews Experimental Forest.

    NASA Astrophysics Data System (ADS)

    Frentress, J.; Kendall, C.; Lajtha, K.; Jones, J.

    2008-12-01

    In order to better understand sources of dissolved organic matter (DOM) in streams from the small to large watershed scales, we initiated a one-year investigation of the chemical and isotopic characteristics of DOM at the HJ Andrews Experimental Forest (HJA) in Blue River, OR. DOM is a biologically significant loss from these watersheds, but its sources (forest floor, mineral soil, riparian zones, stream biota) are debated. Traditional chemical characterizations of DOM like SUVA and FI have been useful in conceptualizing and modeling streamflow sources, however, an improved method for assessing DOM quality is needed to adequately differentiate DOM from sources within the watershed. The isotopic characterization of inorganic molecules like nitrate has provided insight to the role of subsurface and surface processes governing the production and transport of critical nutrients, and yet to date, little work has been done to examine the usefulness of isotopic characterization of organically bound nutrients. We apply the isotopic characterization approach to DOM in order to better understand DOM production, transformation, and transport to streams in a range of watershed sizes. Major questions addressed in this research are: 1) Where in the watershed does stream DOM come from? 2) How do DOM sources vary temporally? 3) How do physical attributes of the watershed mediate DOM quality? A relatively new solid-phase extraction technique using C-18 resin was used to isolate DOM in water samples from 10 watersheds, ranging in size from 10 to 6200 hectares, on 3-week intervals from May 2007 to June 2008. The modified technique allowed for small (1 Liter) sample sizes and short processing times to reduce the costs of analysis. The capacity of carbon, nitrogen and sulfur isotopic characterizations of DOM, as well as traditional methods like SUVA and C:N, to predict physical watershed attributes (i.e. mean residence time, soil depth, elevation, gradient) and land use history (timber

  20. Physiology and Anatomy for Nurses and Healthcare Practitioners: A Homeostatic Approach - Third edition Clancy John McVicar Andrew J Physiology and Anatomy for Nurses and Healthcare Practitioners: A Homeostatic Approach - Third edition 768pp Hodder Arnold 9780340967591 0340967595 [Formula: see text].

    PubMed

    2010-02-10

    John Clancy and Andrew McVicar give a fascinating insight into the homeostatic mechanism for health. The content focuses on the body's adaptive responses in health and the maladaptive processes in ill-health. In turn, these processes are linked to the knowledge required by healthcare professionals in restoring health or enhancing the quality of life until death.