Astronaut Dale Gardner rehearses during EVA practice

NASA Technical Reports Server (NTRS)

1984-01-01

Astronaut Dale A. Gardner, 51-A mission specialist, rehearses control of manned maneuvering unit (MMU) during a practice for an extravehicular activity (EVA). Gardner is in the Shuttle mockup and integration laboratory at JSC. Gardner works to deploy a large stinger device designed for locking onto the orbiting satellites via entering a spent engine's nozzle.

Dicke-model simulation via cavity-assisted Raman transitions

NASA Astrophysics Data System (ADS)

Zhang, Zhiqiang; Lee, Chern Hui; Kumar, Ravi; Arnold, K. J.; Masson, Stuart J.; Grimsmo, A. L.; Parkins, A. S.; Barrett, M. D.

2018-04-01

The Dicke model is of fundamental importance in quantum mechanics for understanding the collective behavior of atoms coupled to a single electromagnetic mode. Here, we demonstrate a Dicke-model simulation via cavity-assisted Raman transitions in a configuration using counterpropagating laser beams. The observations indicate that motional effects should be included to fully account for the results. These results are contrary to experiments using single-beam and copropagating configurations. We give a theoretical description that accounts for the beam geometries used in the experiments and indicates the potential role of motional effects. In particular, a model is given that highlights the influence of Doppler broadening on the observed phase-transition thresholds.

Interview with Dick Fish

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

An interview with Dick Fish of the Lawrence Berkeley Laboratory is presented. Mr. Fish's current research interests are discussed. These interests include the identification of trace metal non-porphyrin compounds in heavy crude petroleums. In particular, these interests include the identification of a class of nickel and vanadium compounds in the heavy crude petroleum from various geographical locations, e.g., the Boscan in Cerro Negro in Venezuela, Wilmington in California, and Prudhoe Bay in Alaska.

Entanglement detection in the vicinity of arbitrary Dicke states.

PubMed

Duan, L-M

2011-10-28

Dicke states represent a class of multipartite entangled states that can be generated experimentally with many applications in quantum information. We propose a method to experimentally detect genuine multipartite entanglement in the vicinity of arbitrary Dicke states. The detection scheme can be used to experimentally quantify the entanglement depth of many-body systems and is easy to implement as it requires measurement of only three collective spin operators. The detection criterion is strong as it heralds multipartite entanglement even in cases where the state fidelity goes down exponentially with the number of qubits.

Comment on the Jordan-Brands-Dicke universes

NASA Astrophysics Data System (ADS)

Lorenz-Petzold, D.

1987-06-01

It is shown that the recently obtained Jordan-Brans-Dicke solutions by Chauvet and Guzmán (1986) are either inconsistent, or only special power-law solutions derived previously by Lorenz-Petzold in various papers.

Inflation and dark energy from the Brans-Dicke theory

NASA Astrophysics Data System (ADS)

Artymowski, Michał; Lalak, Zygmunt; Lewicki, Marek

2015-06-01

We consider the Brans-Dicke theory motivated by the f(R) = R + α Rn - β R2-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.

Experimental entanglement of a six-photon symmetric Dicke state.

PubMed

Wieczorek, Witlef; Krischek, Roland; Kiesel, Nikolai; Michelberger, Patrick; Tóth, Géza; Weinfurter, Harald

2009-07-10

We report on the experimental observation and characterization of a six-photon entangled Dicke state. We obtain a fidelity as high as 0.654+/-0.024 and prove genuine six-photon entanglement by, amongst others, a two-setting witness yielding -0.422+/-0.148. This state has remarkable properties; e.g., it allows obtaining inequivalent entangled states of a lower qubit number via projective measurements, and it possesses a high entanglement persistency against qubit loss. We characterize the properties of the six-photon Dicke state experimentally by detecting and analyzing the entanglement of a variety of multipartite entangled states.

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.

Astronaut Dale Gardner rehearses control of MMU during EVA practice

NASA Technical Reports Server (NTRS)

1984-01-01

Astronaut Dale A. Gardner, 51-A mission specialist, rehearses control of manned maneuvering unit (MMU) during a practice for an extravehicular activity (EVA). Gardner is in the Shuttle mockup and integration laboratory at JSC.

Remembering Dick Crane

NASA Astrophysics Data System (ADS)

Jossem, E. Leonard

2007-09-01

Physicist, polymath, educator, leader, Horace Richard Crane died on April 19, 2007, a few months short of his 100th birthday. Those of us who were fortunate enough to have had him as a friend mourn his loss, but for all of us he leaves a rich and varied legacy of published works that invite reading and rereading. Dick's work as a physicist was recognized in 1966 by his election to the National Academy of Sciences and in 1986 by the award of the President's National Medal of Science: "For the first measurement of the magnetic moment and spin of free electrons and positrons."

Dale Reed with model in front of M2-F1

NASA Image and Video Library

1967-03-06

Dale Reed with a model of the M2-F1 in front of the actual lifting body. Reed used the model to show the potential of the lifting bodies. He first flew it into tall grass to test stability and trim, then hand-launched it from buildings for longer flights. Finally, he towed the lifting-body model aloft using a powered model airplane known as the "Mothership." A timer released the model and it glided to a landing. Dale's wife Donna used a 9 mm. camera to film the flights of the model. Its stability as it glided--despite its lack of wings--convinced Milt Thompson and some Flight Research Center engineers including the center director, Paul Bikle, that a piloted lifting body was possible.

Change Strategies Used by a Proprietary School: The Dale Carnegie Organization.

ERIC Educational Resources Information Center

Mackey, Paul J.

1983-01-01

Discusses recent developments regarding proprietary schools: recognition by accrediting associations, increased federal aid, and increased need for the specific training offered by these schools. Uses the Dale Carnegie organization as an example. (JOW)

Finite-size scaling analysis in the two-photon Dicke model

NASA Astrophysics Data System (ADS)

Chen, Xiang-You; Zhang, Yu-Yu

2018-05-01

We perform a Schrieffer-Wolff transformation to the two-photon Dicke model by keeping the leading-order correction with a quartic term of the field, which is crucial for finite-size scaling analysis. Besides a spectral collapse as a consequence of two-photon interaction, the super-radiant phase transition is indicated by the vanishing of the excitation energy and the uniform atomic polarization. The scaling functions for the ground-state energy and the atomic pseudospin are derived analytically. The scaling exponents of the observables are the same as those in the standard Dicke model, indicating they are in the same universality class.

Dale Chihuly: An Inspiration in Art, Science, and Math!

ERIC Educational Resources Information Center

Hubbert, Beth

2009-01-01

Connecting students to the arts in a concrete way can be an effective teaching tool. In this article, the author describes how Dale Chihuly's "Hart Window," which features hand-blown glass disks affixed to the framework of the window, can be an inspiration for interdisciplinary connections in art, science and math. (Contains 4 online resources.)

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

NASA Astrophysics Data System (ADS)

ten Brinke, Nicolai; Schützhold, Ralf

2016-04-01

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.

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

DOE Office of Scientific and Technical Information (OSTI.GOV)

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].

Revisiting the analogue of the Jebsen-Birkhoff theorem in Brans-Dicke gravity

NASA Astrophysics Data System (ADS)

Faraoni, Valerio; Hammad, Fayçal; Cardini, Adriana M.; Gobeil, Thomas

2018-04-01

We report the explicit form of the general static, spherically symmetric, and asymptotically flat solution of vacuum Brans-Dicke gravity in the Jordan frame, assuming that the Brans-Dicke scalar field has no singularities or zeros (except possibly for a central singularity). This general solution is conformal to the Fisher-Wyman geometry of Einstein theory and its nature depends on a scalar charge parameter. Apart from the Schwarzschild black hole, only wormhole throats and central naked singularities are possible.

Astronaut Dale Gardner using MMU to travel to Westar VI satellite

NASA Technical Reports Server (NTRS)

1984-01-01

Astronaut Dale A. Gardner, wearing the manned maneuvering unit (MMU) approaching the spinng Westar VI satellite over Bahama Banks. The end effector of the remote manipulator system (RMS) controlled by Dr. Anna L. Fisher inside Discovery's cabin, awaits its duty at right.

Aesthetics at the Impasse: The Unresolved Property of Dale Farm

ERIC Educational Resources Information Center

McCarthy, Lynne

2015-01-01

"Soil Depositions" was an art activist project that responded to the 2011 Irish Traveller eviction at Dale Farm in Essex when three resident women donated small amounts of soil from the site of their former home. The soil was subsequently deposited, framed and documented in various national and international locations. This article…

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…

Axially Symmetric Brans-Dicke-Maxwell Solutions

NASA Astrophysics Data System (ADS)

Chatterjee, S.

1981-05-01

Following a method of John and Goswami new solutions of coupled Brans-Dicke-Maxwell theory are generated from Zipoy's solutions in oblate and prolate spheroidal coordinates for source-free gravitational field. All these solutions become Euclidean at infinity. The asymptotic behavior and the singularity of the solutions are discussed and a comparative study made with the corresponding Einstein-Maxwell solutions. The possibility of a very large red shift from the boundary of the spheroids is also discussed.

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

DOE Office of Scientific and Technical Information (OSTI.GOV)

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 themore » generalized n-level many-mode Jaynes-Cummings and Dicke-type models using nested algebraic Bethe ansatz.« less

Astronaut Dale Gardner holds up for sale sign after EVA

NASA Technical Reports Server (NTRS)

1984-01-01

Astronaut Dale A. Gardner, having just completed the major portion of his second extravehicular activity (EVA) period in three days, holds up a 'for sale' sign. Astronaut Joseph P. ALlen IV, who also participated in the two EVA's, is reflected in Gardner's helmet visor. A portion of each of two recovered satellites is in the lower right corner, with Westar nearer Discovery's aft.

Astronaut Dale Gardner using MMU to travel to Westar VI satellite

NASA Technical Reports Server (NTRS)

1984-01-01

Astronaut Dale A. Gardner, wearing the manned maneuvering unit (MMU) approaching the spinng Westar VI satellite over Bahama Banks. Gardner uses a large tool called the apogee kick motor capture device (ACD) to enter the nozzle of the spent Westar engine and stabilize the satellite to capture it for return to Earth.

Astronat Dale Gardner using MMU to travel to Westar VI satellite

NASA Technical Reports Server (NTRS)

1984-01-01

Astronat Dale A. Gardner appears to be under the remote manipulator system (RMS) end effector as he makes a turn in space and preapares to use the manned maneuvering unit (MMU) to travel to Westar VI satellite. The 'stinger' he carries will enter the communications satellite through the nozzle of the spent motor.

Generalized Brans-Dicke theories

DOE Office of Scientific and Technical Information (OSTI.GOV)

De Felice, Antonio; Tsujikawa, Shinji, E-mail: defelice@rs.kagu.tus.ac.jp, 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 themore » field propagation speed allows us to distinguish those theories from the ΛCDM model.« less

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)

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.

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.

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.

Bianchi type-I domain walls with negative constant deceleration parameter in Brans-Dicke theory

NASA Astrophysics Data System (ADS)

Katore, S. D.

2011-04-01

Bianchi type-I space-time is considered in the presence of a domain walls source in the scalar-tensor theory of gravitation proposed by Brans and Dicke (C.H. Brans and R.H. Dicke, Phys. Rev. 24, 925 (1961)). With the help of the special law of variation for Hubble's parameter proposed by Bermann (M.S. Berman, Nuovo Cimento B 74, 182 (1983)) a cosmological model with negative constant deceleration parameter is obtained in the presence of domain walls. Some physical properties of the model are also discussed.

Previous Attempts to Debunk the Mythical Retention Chart and Corrupted Dale's Cone

ERIC Educational Resources Information Center

Subramony, Deepak Prem; Molenda, Michael; Betrus, Anthony K.; Thalheimer, Will

2014-01-01

Critics have been attempting to debunk the mythical retention chart at least since 1971. The earliest critics, David Curl and Frank Dwyer, were addressing just the retention data. Beginning around 2002, a new generation of critics has taken on the illegitimate combination of the retention chart and Edgar Dale's Cone of Experience--the corrupted…

The Mythical Retention Chart and the Corruption of Dale's Cone of Experience

ERIC Educational Resources Information Center

Subramony, Deepak Prem; Molenda, Michael; Betrus, Anthony K.; Thalheimer, Will

2014-01-01

In response to the wide-scale proliferation of "the cone of learning"--a fanciful retention chart confounded with Dale's Cone of Experience--the authors make four major claims debunking this fantasy and provide documentary evidence to support these claims. The first claim is that the data in the mythical retention chart do not make…

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…

Solar oblateness from Archimedes to Dicke

NASA Astrophysics Data System (ADS)

Sigismondi, C.; Oliva, P.

2005-10-01

The non-spherical shape of the Sun has been invoked to explain the anomalous precession of Mercury. A brief history of some methods for measuring the solar diameter is presented. Archimedes was the first to give upper and lower values for the solar diameter in the third century before Christ. Then there followed the method of total eclipses, used after Halley's observative campaign of 1715 eclipse. We will also discuss the variant of partial eclipses, useful to measure different chords of the solar disk and the method of Dicke, which correlates oblateness with luminous excess in the equatorial zone.

Brans-Dicke inflation in light of the Planck 2015 data

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tahmasebzadeh, B.; Rezazadeh, K.; Karami, K., E-mail: b.tahmasebzadeh@iasbs.ac.ir, E-mail: rezazadeh86@gmail.com, E-mail: kkarami@uok.ac.ir

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 potentialsmore » 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.« less

Gladstone-Dale constant for CF4. [experimental design

NASA Technical Reports Server (NTRS)

Burner, A. W., Jr.; Goad, W. K.

1980-01-01

The Gladstone-Dale constant, which relates the refractive index to density, was measured for CF4 by counting fringes of a two-beam interferometer, one beam of which passes through a cell containing the test gas. The experimental approach and sources of systematic and imprecision errors are discussed. The constant for CF4 was measured at several wavelengths in the visible region of the spectrum. A value of 0.122 cu cm/g with an uncertainty of plus or minus 0.001 cu cm/g was determined for use in the visible region. A procedure for noting the departure of the gas density from the ideal-gas law is discussed.

Flood-Inundation Maps for a 1.6-Mile Reach of Salt Creek, Wood Dale, Illinois

USGS Publications Warehouse

Soong, David T.; Murphy, Elizabeth A.; Sharpe, Jennifer B.

2012-01-01

Digital flood-inundation maps for a 1.6-mile reach of Salt Creek from upstream of the Chicago, Milwaukee, St. Paul & Pacific Railroad to Elizabeth Drive, Wood Dale, Illinois, were created by the U.S. Geological Survey (USGS) in cooperation with the DuPage County Stormwater Management Division. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/ depict estimates of the areal extent of flooding corresponding to selected water levels (gage heights) at the USGS streamgage on Salt Creek at Wood Dale, Illinois (station number 05531175). Current conditions at the USGS streamgage may be obtained on the Internet at http://waterdata.usgs.gov/usa/nwis/uv?05531175. In this study, flood profiles were computed for the stream reach by means of a one-dimensional unsteady flow Full EQuations (FEQ) model. The unsteady flow model was verified by comparing the rating curve output for a September 2008 flood event to discharge measurements collected at the Salt Creek at Wood Dale gage. The hydraulic model was then used to determine 14 water-surface profiles for gage heights at 0.5-ft intervals referenced to the streamgage datum and ranging from less than bankfull to approximately the highest recorded water level at the streamgage. The simulated water-surface profiles were then combined with a Geographic Information System (GIS) Digital Elevation Model (DEM) (derived from Light Detection and Ranging (LiDAR) data) in order to delineate the area flooded at each water level. The areal extent of the inundation was verified with high-water marks from a flood in July 2010 with a peak gage height of 14.08 ft recorded at the Salt Creek at Wood Dale gage. The availability of these maps along with Internet information regarding current gage height from USGS streamgages provide emergency management personnel and residents with information that is critical for flood response activities such as

Hamiltonian formulation of Palatini f(R) theories a la Brans-Dicke theory

DOE Office of Scientific and Technical Information (OSTI.GOV)

Olmo, Gonzalo J.; Sanchis-Alepuz, Helios; Institut fuer Physik, Karl-Franzens-Universitaet Graz

2011-05-15

We study the Hamiltonian formulation of f(R) theories of gravity both in metric and in Palatini formalism using their classical equivalence with Brans-Dicke theories with a nontrivial potential. The Palatini case, which corresponds to the {omega}=-3/2 Brans-Dicke theory, requires special attention because of new constraints associated with the scalar field, which is nondynamical. We derive, compare, and discuss the constraints and evolution equations for the {omega}=-3/2 and {omega}{ne}-3/2 cases. Based on the properties of the constraint and evolution equations, we find that, contrary to certain claims in the literature, the Cauchy problem for the {omega}=-3/2 case is well formulated andmore » there is no reason to believe that it is not well posed in general.« less

Astronaut Dale Gardner holds up for sale sign after EVA

NASA Image and Video Library

1984-11-14

51A-104-049 (14 Nov. 1984) --- Astronaut Dale A. Gardner, having just completed the major portion of his second extravehicular activity (EVA) period in three days aboard the Earth-orbiting Discovery, holds up a for sale sign. Astronaut Joseph P. Allen IV, who also participated in the two EVA, is reflected in Gardner's helmet visor. A portion of each of two recovered satellites is in lower right corner, with Westar nearer Discovery's aft. Dr. Allen, standing on the mobile foot restraint, connected to the remote manipulator system. Photo credit: NASA

Generalized Dicke Nonequilibrium Dynamics in Trapped Ions

NASA Astrophysics Data System (ADS)

Genway, Sam; Li, Weibin; Ates, Cenap; Lanyon, Benjamin P.; Lesanovsky, Igor

2014-01-01

We explore trapped ions as a setting to investigate nonequilibrium phases in a generalized Dicke model of dissipative spins coupled to phonon modes. We find a rich dynamical phase diagram including superradiantlike regimes, dynamical phase coexistence, and phonon-lasing behavior. A particular advantage of trapped ions is that these phases and transitions among them can be probed in situ through fluorescence. We demonstrate that the main physical insights are captured by a minimal model and consider an experimental realization with Ca+ ions trapped in a linear Paul trap with a dressing scheme to create effective two-level systems with a tunable dissipation rate.

Straight spinning cosmic strings in Brans-Dicke gravity

NASA Astrophysics Data System (ADS)

Dos Santos, S. Mittmann; da Silva, J. M. Hoff; Cindra, J. L.

2018-03-01

An exact solution of straight spinning cosmic strings in Brans-Dicke theory of gravitation is presented. The possibility of the existence of closed time-like curves around these cosmic strings is analyzed. Furthermore, the stability about the formation of the topological defect discussed here is checked. It is shown that the existence of a suitable choice for the integration constants in which closed time-like curves are not allowed. We also study the (im)possibility of using the obtained spacetime in the rotational curves problem.

On the phenomenology of extended Brans-Dicke gravity

DOE Office of Scientific and Technical Information (OSTI.GOV)

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

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.

The forensic anthropology legacy of T. Dale Stewart (1901-1997).

PubMed

Ubelaker, D H

2000-03-01

T. Dale Stewart (1901-1997) began his Smithsonian career as a temporary aide to Ales Hrdlicka (1869-1943) in 1924. At the time of his death in 1997, he was regarded world-wide as an authority who led the professional development of American forensic anthropology. He was a prodigious researcher, best known for his meticulous attention to detail, balanced scientific judgment, keen sense of research design, and ability for synthesis. Stewart's publications, extensive casework for the FBI and others, his court testimony, publications, professional contacts, and organizational activity merit him a prominent place in the history of American forensic anthropology.

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.

Astronat Dale Gardner using MMU to travel to Westar VI satellite

NASA Image and Video Library

1984-11-14

51A-104-008 (14 Nov 1984) --- Astronaut Dale A. Gardner appears to be under the remote manipulator system (RMS) end effector as he makes a turn in space and prepared to traverse, using the manned maneuvering unit (MMU) backpack, to the nearby Westar VI to "Sting" it with the device he carries. The stringer will enter the communications satellite through the nozzle of the spent motor. Gardner achieved a hard dock at 6:32 A.M. and this picture was photographed about five minutes earlier, on Nov. 14, 1984.

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.

Arbitrary Dicke-State Control of Symmetric Rydberg Ensembles

NASA Astrophysics Data System (ADS)

Deutsch, Ivan

2017-04-01

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 Model (JCM), familiar in cavity QED. In this isomorphism, the presence or absence of a collective Rydberg excitation plays the role of the two-level system and the number of symmetric excitations of the hyperfine qubits plays the role of the bosonic excitations of the JCM. This system is fully controllable through the addition of phase-modulated microwaves that drive transitions between the Rydberg-dressed states. In the weak dressing regime, this results in a single-axis twisting Hamiltonian, plus time-dependent rotations of the collective spin. For strong dressing we control the entire Jaynes-Cummings ladder. Using optimal control, we design microwave waveforms that can generate arbitrary states in the symmetric subspace. This includes cat states, Dicke states, and spin squeezed states. With currently feasible parameters, it is possible to generate arbitrary symmetric states of _10 hyperfine qubits in 1 microsec, 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. More generally, we can achieve control on larger ensembles of qubits by designing waveforms that are bandwidth limited within the coherence time of the system. We use this to study general questions of the ``quantum speed limit'' and information content in a waveform that is needed to generate arbitrary quantum states.

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.

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

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.

'Dale': an interpretative phenomenological analysis of a service user's experience with a crisis resolution/home treatment team in the United Kingdom.

PubMed

Nelson, L J; Miller, P K; Ashman, D

2016-08-01

WHAT IS KNOWN ABOUT THE SUBJECT?: This paper describes crisis resolution/home treatment (CRHT) teams, which are part of mental health services in the United Kingdom. CRHT is expected to assist individuals in building resilience and work within a recovery approach. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: This paper arises from an interview with one individual, Dale, as part of a larger study exploring service users' experiences of CRHT. It adds to the body of narrative knowledge in CRHT through Dale's co-authorship of this paper, reflecting on his original interview 4 years later, with co-authors providing critical interpretation of his experience, in turn supported by cognate literature. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Implications for practice are considered, themselves mediated through Dale's own descriptions of how CRHT interventions impacted upon him. These impacts are analysed with respect to three themes: Resilience, Recovery and Power. It is centrally contended that clinicians need to more clearly comprehend three core matters. First, what resilience 'is' for service users as well as the complex process through which these individuals move in developing resilience. Second, the distinction that service users might make between 'recovery' and 'functionality', and how this in turn can impact on individuals both in personal and socioeconomic sense. Finally, the mechanics of power within CRHT contexts and how these interpersonal dynamics can affect the relationship between service user and clinician in practice. Introduction and Aim The central purpose of this paper, part of a larger study exploring the experiences of Service Users (SUs) with CRHT, is to emphasise the importance of the SU voice itself within the domain. Following an interrogation of the historical contexts of CRHT. Method This paper uses interpretative phenomological approach around detailed thematic examination of an extended, semi-structured with a single SU: Dale. Moreover, four

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…

Dynamics of cosmological perturbations in modified Brans-Dicke cosmology with matter-scalar field interaction

NASA Astrophysics Data System (ADS)

Kofinas, Georgios; Lima, Nelson A.

2017-10-01

In this work we focus on a novel completion of the well-known Brans-Dicke theory that introduces an interaction between the dark energy and dark matter sectors, known as complete Brans-Dicke (CBD) theory. We obtain viable cosmological accelerating solutions that fit supernovae observations with great precision without any scalar potential V (ϕ ). We use these solutions to explore the impact of the CBD theory on the large scale structure by studying the dynamics of its linear perturbations. We observe a growing behavior of the lensing potential Φ+ at late-times, while the growth rate is actually suppressed relatively to Λ CDM , which allows the CBD theory to provide a competitive fit to current RSD measurements of f σ8. However, we also observe that the theory exhibits a pathological change of sign in the effective gravitational constant concerning the perturbations on subhorizon scales that could pose a challenge to its validity.

Ground water in Dale Valley, New York

USGS Publications Warehouse

Randall, Allan D.

1979-01-01

Dale Valley is a broad valley segment, enlarged by glacial erosion, at the headwaters of Little Tonawanda Creek near Warsaw , New York. A thin, shallow alluvial aquifer immediately underlies the valley floor but is little used. A deeper gravel aquifer, buried beneath many feet of lake deposits, is tapped by several industrial wells. A finite-difference digital model treated the deep aquifer as two-dimensional with recharge and discharge through a confining layer. It was calibrated by simulating (1) natural conditions, (2) an 18-day aquifer test, and (3) 91 days of well-field operation. Streamflow records and model simulations suggest that in moderately wet years such as 1974, a demand of 750 gallons per minute could be met by withdrawal from the creek and from the aquifer without excessive drawdown at production wells or existing domestic wells. With reasonable but unverified model adjustments to simulate an unusually dry year, the model predicts that a demand of 600 gallons per minute could be met from the same sources. Water high in chloride has migrated from bedrock into parts of the deep aquifer. Industrial pumpage, faults in the bedrock, and the natural flow system may be responsible. (Woodard-USGS)

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

NASA Astrophysics Data System (ADS)

Lamata, Lucas

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. The author wishes to acknowledge discussions with I. Arrazola, A. Mezzacapo, J. S. Pedernales, and E. Solano, and support from Ramon y Cajal Grant RYC-2012-11391, Spanish MINECO/FEDER FIS2015-69983-P, UPV/EHU UFI 11/55 and Project EHUA14/04.

Dispersal, mortality, and predation on recently-stocked rainbow trout in Dale Hollow Lake, Tennessee

USGS Publications Warehouse

Ivasauskas, Tomas J.; Bettoli, Phillip William

2011-01-01

Forty-four hatchery-raised rainbow trout (Oncorhynchus mykiss) were implanted with ultrasonic tags and stocked into Dale Hollow Lake, Tennessee, and tracked at least once per week for eight weeks to describe post-stocking dispersal rates, movements, and habitat use. Dispersal followed a three-stage pattern characterized by rapid movement away from each stocking site during the first week, relatively little dispersal during the next three weeks, and further dispersion during the final four weeks that fish were tracked. Rainbow trout exhibited a strong affinity for coves and were rarely encountered in the main channel. Tagged fish stocked in March exhibited lower mortality (Zweekly = 0.027) than those stocked in January (Zweekly = 0.062) during the first eight weeks post-stocking. Diets of potential predators in Dale Hollow Lake were examined. Walleye (Sander vitreus), smallmouth bass (Micropterus dolomieu), largemouth bass (M. salmoides), and holdover rainbow trout all preyed on recently stocked trout. Larger walleye were more likely to prey on stocked rainbow trout, and walleye of all sizes tended to prey on the smaller trout in each stocked cohort. Walleye were more likely to feed on rainbow trout during January than March. Effective stocking strategies should focus on reducing predation by stocking larger rainbow trout or by stocking when predation risk is minimized (i.e., March).

Gravitational field of a concentrated mass in Jordan—Brans—Dicke theory

NASA Astrophysics Data System (ADS)

Arutyunyan, G. G.; Papoyan, V. V.

1994-04-01

The problem of determining the gravitational field of a static, spherically symmetric, self-gravitating object is formulated. The small number of physically applicable exact solutions of the equations in Jordan—Brans—Dicke theory is augmented with new exact solutions describing the external gravitational field of the given body. Once a solution has been found, it can be rewritten in modified curvature, homogeneous, and other coordinates by appropriate gauging. In a special case the solution coincides with the well-known Schwarzschild solution.

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

DOE Office of Scientific and Technical Information (OSTI.GOV)

Maurya, D. Ch., E-mail: dcmaurya563@gmail.com; Zia, R., E-mail: rashidzya@gmail.com; Pradhan, A., E-mail: pradhan.anirudh@gmail.com

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 ofmore » 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.« less

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

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.

First-order dipolar phase transition in the Dicke model with infinitely coordinated frustrating interaction

NASA Astrophysics Data System (ADS)

Mukhin, S. I.; Gnezdilov, N. V.

2018-05-01

We found analytically a first-order quantum phase transition in a Cooper pair box array of N low-capacitance Josephson junctions capacitively coupled to resonant photons in a microwave cavity. The Hamiltonian of the system maps on the extended Dicke Hamiltonian of N spins 1 /2 with infinitely coordinated antiferromagnetic (frustrating) interaction. This interaction arises from the gauge-invariant coupling of the Josephson-junction phases to the vector potential of the resonant photons field. In the N ≫1 semiclassical limit, we found a critical coupling at which the ground state of the system switches to one with a net collective electric dipole moment of the Cooper pair boxes coupled to a super-radiant equilibrium photonic condensate. This phase transition changes from the first to second order if the frustrating interaction is switched off. A self-consistently "rotating" Holstein-Primakoff representation for the Cartesian components of the total superspin is proposed, that enables one to trace both the first- and the second-order quantum phase transitions in the extended and standard Dicke models, respectively.

Room-temperature cavity quantum electrodynamics with strongly coupled Dicke states

NASA Astrophysics Data System (ADS)

Breeze, Jonathan D.; Salvadori, Enrico; Sathian, Juna; Alford, Neil McN.; Kay, Christopher W. M.

2017-09-01

The strong coupling regime is essential for efficient transfer of excitations between states in different quantum systems on timescales shorter than their lifetimes. The coupling of single spins to microwave photons is very weak but can be enhanced by increasing the local density of states by reducing the magnetic mode volume of the cavity. In practice, it is difficult to achieve both small cavity mode volume and low cavity decay rate, so superconducting metals are often employed at cryogenic temperatures. For an ensembles of N spins, the spin-photon coupling can be enhanced by √{N } through collective spin excitations known as Dicke states. For sufficiently large N the collective spin-photon coupling can exceed both the spin decoherence and cavity decay rates, making the strong-coupling regime accessible. Here we demonstrate strong coupling and cavity quantum electrodynamics in a solid-state system at room-temperature. We generate an inverted spin-ensemble with N 1015 by photo-exciting pentacene molecules into spin-triplet states with spin dephasing time T2* 3 μs. When coupled to a 1.45 GHz TE01δ mode supported by a high Purcell factor strontium titanate dielectric cavity (Vm 0.25 cm3, Q 8,500), we observe Rabi oscillations in the microwave emission from collective Dicke states and a 1.8 MHz normal-mode splitting of the resultant collective spin-photon polariton. We also observe a cavity protection effect at the onset of the strong-coupling regime which decreases the polariton decay rate as the collective coupling increases.

Explaining fast radio bursts through Dicke's superradiance

NASA Astrophysics Data System (ADS)

Houde, Martin; Mathews, Abhilash; Rajabi, Fereshteh

2018-03-01

Fast radio bursts (FRBs), characterized by strong bursts of radiation intensity at radio wavelengths lasting on the order of a millisecond, have yet to be firmly associated with a family, or families, of astronomical sources. It follows that despite the large number of proposed models, no well-defined physical process has been identified to explain this phenomenon. In this paper, we demonstrate how Dicke's superradiance, for which evidence has recently been found in the interstellar medium, can account for the characteristics associated with FRBs. Our analysis and modelling of previously detected FRBs suggest they could originate from regions in many ways similar to those known to harbour masers or megamasers, and result from the coherent radiation emanating from populations of molecules associated with large-scale entangled quantum mechanical states. We estimate this entanglement to involve as many as ˜1030 to ˜1032 molecules over distances spanning 100-1000 au.

Cosmological constraints on Brans-Dicke theory.

PubMed

Avilez, A; Skordis, C

2014-07-04

We report strong cosmological constraints on the Brans-Dicke (BD) theory of gravity using cosmic microwave background data from Planck. We consider two types of models. First, the initial condition of the scalar field is fixed to give the same effective gravitational strength Geff today as the one measured on Earth, GN. In this case, the BD parameter ω is constrained to ω>692 at the 99% confidence level, an order of magnitude improvement over previous constraints. In the second type, the initial condition for the scalar is a free parameter leading to a somewhat stronger constraint of ω>890, while Geff is constrained to 0.981

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.

Spin-squeezing and Dicke-state preparation by heterodyne measurement

DOE Office of Scientific and Technical Information (OSTI.GOV)

Vanderbruggen, T.; Bernon, S.; Bertoldi, A.

2011-01-15

We investigate the quantum nondemolition (QND) measurement of an atomic population based on a heterodyne detection and show that the induced back-action allows for the preparation of both spin-squeezed and Dicke states. We use a wave-vector formalism to describe the stochastic process of the measurement and the associated atomic evolution. Analytical formulas of the atomic distribution momenta are derived in the weak-coupling regime both for short- and long-time behavior, and they are in good agreement with those obtained by a Monte Carlo simulation. The experimental implementation of the proposed heterodyne detection scheme is discussed. The role played in the squeezingmore » process by the spontaneous emission is considered.« less

Isotropic LQC and LQC-inspired models with a massless scalar field as generalised Brans-Dicke theories

NASA Astrophysics Data System (ADS)

Rama, S. Kalyana

2018-06-01

We explore whether generalised Brans-Dicke theories, which have a scalar field Φ and a function ω (Φ ), can be the effective actions leading to the effective equations of motion of the LQC and the LQC-inspired models, which have a massless scalar field σ and a function f( m). We find that this is possible for isotropic cosmology. We relate the pairs (σ , f) and (Φ , ω ) and, using examples, illustrate these relations. We find that near the bounce of the LQC evolutions for which f(m) = sin m, the corresponding field Φ → 0 and the function ω (Φ ) ∝ Φ ^2. We also find that the class of generalised Brans-Dicke theories, which we had found earlier to lead to non singular isotropic evolutions, may be written as an LQC-inspired model. The relations found here in the isotropic cases do not apply to the anisotropic cases, which perhaps require more general effective actions.

Keldysh approach for nonequilibrium phase transitions in quantum optics: Beyond the Dicke model in optical cavities

NASA Astrophysics Data System (ADS)

Torre, Emanuele G. Dalla; Diehl, Sebastian; Lukin, Mikhail D.; Sachdev, Subir; Strack, Philipp

2013-02-01

We investigate nonequilibrium phase transitions for driven atomic ensembles interacting with a cavity mode and coupled to a Markovian dissipative bath. In the thermodynamic limit and at low frequencies, we show that the distribution function of the photonic mode is thermal, with an effective temperature set by the atom-photon interaction strength. This behavior characterizes the static and dynamic critical exponents of the associated superradiance transition. Motivated by these considerations, we develop a general Keldysh path-integral approach that allows us to study physically relevant nonlinearities beyond the idealized Dicke model. Using standard diagrammatic techniques, we take into account the leading-order corrections due to the finite number N of atoms. For finite N, the photon mode behaves as a damped classical nonlinear oscillator at finite temperature. For the atoms, we propose a Dicke action that can be solved for any N and correctly captures the atoms’ depolarization due to dissipative dephasing.

Cosmopolitanism and Our Descriptions of Ethics and Ontology: A Response to Dale Snauwaert's "The Ethics and Ontology of Cosmopolitanism"

ERIC Educational Resources Information Center

Hansen, David T.

2010-01-01

In recent years scholars across the humanities and social sciences have revitalized the ancient concept of cosmopolitanism. Dale Snauwaert illuminates why this is so in his thoughtful article on what it might mean to educate for a shared humanity. Snauwaert shows why many people find so-called "realism" an unsatisfactory political and moral…

General integrable n-level, many-mode Janes-Cummings-Dicke models and classical r-matrices with spectral parameters

DOE Office of Scientific and Technical Information (OSTI.GOV)

Skrypnyk, T., E-mail: taras.skrypnyk@unimib.it, E-mail: tskrypnyk@imath.kiev.ua

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 detailmore » 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.« less

Research on Coupling Method of Watershed Initial Water Rights Allocation in Daling River

NASA Astrophysics Data System (ADS)

Liu, J.; Fengping, W.

2016-12-01

Water scarcity is now a common occurrence in many countries. The situation of watershed initial water rights allocation has caused many benefit conflicts among regions and regional water sectors of domestic and ecology environment and industries in China. This study aims to investigate the method of watershed initial water rights allocation in the perspective of coupling in Daling River Watershed taking provincial initial water rights and watershed-level governmental reserved water as objects. First of all, regarding the allocation subsystem of initial water rights among provinces, this research calculates initial water rights of different provinces by establishing the coupling model of water quantity and quality on the principle of "rewarding efficiency and penalizing inefficiency" based on the two control objectives of water quantity and quality. Secondly, regarding the allocation subsystem of watershed-level governmental reserved water rights, the study forecasts the demand of watershed-level governmental reserved water rights by the combination of case-based reasoning and water supply quotas. Then, the bilaterally coupled allocation model on water supply and demand is designed after supply analysis to get watershed-level governmental reserved water rights. The results of research method applied to Daling River Watershed reveal the recommended scheme of watershed initial water rights allocation based on coordinated degree criterion. It's found that the feasibility of the iteration coupling model and put forward related policies and suggestions. This study owns the advantages of complying with watershed initial water rights allocation mechanism and meeting the control requirements of water quantity, water quality and water utilization efficiency, which help to achieve the effective allocation of water resources.

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

DOE Office of Scientific and Technical Information (OSTI.GOV)

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.

Orbiting naked singularities in large-ω Brans-Dicke gravity

NASA Astrophysics Data System (ADS)

Chauvineau, Bertrand

2017-11-01

Brans-Dicke gravity admits spherical solutions describing naked singularities rather than black holes. Depending on some parameters entering such a solution, stable circular orbits exist for all radii. One shows that, despite the fact a naked singularity is an infinite redshift location, the far observed orbital motion frequency is unbounded for an adiabatically decreasing radius. We then argue that this feature remains true in a wide set of scalar(s)-tensor theories if gravity. This is a salient difference with general relativity, and the repercussion on the gravitational radiation by EMRI systems is stressed. Since this behaviour survives the ω \\longrightarrow ∞ limit, the possibility of such solutions is of utmost interest in the new gravitational wave astronomy context, despite the current constraints on scalar-tensor gravity.

Experimental observation of four-photon entangled Dicke state with high fidelity.

PubMed

Kiesel, N; Schmid, C; Tóth, G; Solano, E; Weinfurter, H

2007-02-09

We present the experimental observation of the symmetric four-photon entangled Dicke state with two excitations |D_{4};{(2)}. A simple experimental setup allowed quantum state tomography yielding a fidelity as high as 0.844+/-0.008. We study the entanglement persistency of the state using novel witness operators and focus on the demonstration of a remarkable property: depending on the orientation of a measurement on one photon, the remaining three photons are projected into both inequivalent classes of genuine tripartite entanglement, the Greenberger-Horne-Zeilinger and W class. Furthermore, we discuss possible applications of |D_{4};{(2)} in quantum communication.

NASA Remembers Gemini, Apollo Astronaut Dick Gordon

NASA Image and Video Library

2017-11-07

Astronaut Dick Gordon, command module pilot on Apollo 12, the second lunar landing mission, died on Monday, November 6 at the age of 88. A native of Seattle, Washington and 1951 graduate of the University of Washington, Gordon became an astronaut in 1963 after a career as a naval aviator. He spent more than 316 hours in space on two missions. He was the pilot for the three-day Gemini 11 mission in 1966 and performed two spacewalks. At the time of the flight, Gemini 11 set the world altitude record of 850 miles. Gordon made a second flight in 1969 as command pilot on Apollo 12 with spacecraft commander, Pete Conrad and lunar module pilot, Alan Bean. Throughout the 31-hour lunar surface stay by Conrad and Bean, Gordon remained in orbit around the moon on the command module, "Yankee Clipper." In November 2005, NASA honored Gordon with an Ambassador of Exploration award. NASA presented these prestigious awards to the astronauts who took part in the nation's Mercury, Gemini and Apollo space programs from 1961 to 1972.

Variational treatment of entanglement in the Dicke model

NASA Astrophysics Data System (ADS)

Bakemeier, L.; Alvermann, A.; Fehske, H.

2015-10-01

We introduce a variational ansatz for the Dicke model that extends mean-field theory through the inclusion of spin-oscillator correlations. The correlated variational state is obtained from the mean-field product state via a unitary transformation. The ansatz becomes correct in the limit of large oscillator frequency and in the limit of a large spin, for which it captures the leading quantum corrections to the classical limit exactly including the spin-oscillator entanglement entropy. We explain the origin of the unitary transformation before we show that the ansatz improves substantially upon mean-field theory, giving near exact results for the ground state energy and very good results for other observables. We then discuss why the ansatz still encounters problems in the transition regime at moderate spin lengths, where it fails to capture the precursors of the superradiant quantum phase transition faithfully. This observation illustrates the principal limits of semi-classical formulations, even after they are extended with correlations and entanglement.

Public Speaking on the Streets and in the Ivory Tower: A Comparison of the Dale Carnegie Course and the Academic Course.

ERIC Educational Resources Information Center

Miller, Christine M.

Many speech communication educators and researchers look upon Dale Carnegie's public speaking course with derision for its methods as well as its motives. A comparison of Carnegie's course with university courses in speech communication reveals a number of differences between the two, which in part explains this attitude. Carnegie began his course…

Extension of the Gladstone-Dale equation for flame flow field diagnosis by optical computerized tomography

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chen Yunyun; Li Zhenhua; Song Yang

2009-05-01

An extended model of the original Gladstone-Dale (G-D) equation is proposed for optical computerized tomography (OCT) diagnosis of flame flow fields. For the purpose of verifying the newly established model, propane combustion is used as a practical example for experiment, and moire deflection tomography is introduced with the probe wavelength 808 nm. The results indicate that the temperature based on the extended model is more accurate than that based on the original G-D equation. In a word, the extended model can be suitable for all kinds of flame flow fields whatever the components, temperature, and ionization are.

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…

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.

Enhancement of the thermoelectric figure of merit in DNA-like systems induced by Fano and Dicke effects.

PubMed

Fu, Hua-Hua; Gu, Lei; Wu, Dan-Dan; Zhang, Zu-Quan

2015-04-28

We report a theoretical study highlighting the thermoelectric properties of biological and synthetic DNA molecules. Based on an effective tight-binding model of duplex DNA and by using the nonequilibrium Green's function technique, the thermal conductance, electrical conductance, Seebeck coefficient and thermoelectric figure of merit in the system are numerically calculated by varying the asymmetries of energies and electronic hoppings in the backbone sites to simulate the environmental complications and fluctuations. We find that due to the multiple transport paths in the DNA molecule, the Fano antiresonance occurs, and enhances the Seebeck coefficient and the figure of merit. When the energy difference is produced in every opposite backbone site, the Dicke effect appears. This effect gives rise to a semiconducting-metallic transition, and enhances the thermoelectric efficiency of the DNA molecule remarkably. Moreover, as the Fano antiresonance point is close to the Dicke resonance one, a giant enhancement in the thermoelectric figure of merit in the DNA molecule has been found. These results provide a scenario to obtain effective routes to enhance the thermoelectric efficiency in the DNA molecules, and suggest perspectives for future experiments intending to control the thermoelectric transport in DNA-like nanodevices.

A path integral approach to the full Dicke model with dipole-dipole interaction

NASA Astrophysics Data System (ADS)

Aparicio Alcalde, M.; Stephany, J.; Svaiter, N. F.

2011-12-01

We consider the full Dicke spin-boson model composed by a single bosonic mode and an ensemble of N identical two-level atoms with different couplings for the resonant and anti-resonant interaction terms, and incorporate a dipole-dipole interaction between the atoms. Assuming that the system is in thermal equilibrium with a reservoir at temperature β-1, we compute the free energy in the thermodynamic limit N → ∞ in the saddle-point approximation to the path integral and determine the critical temperature for the super-radiant phase transition. In the zero temperature limit, we recover the critical coupling of the quantum phase transition, presented in the literature.

Using hydrodynamic model to predict PFOS and PFOA transport in the Daling River and its tributary, a heavily polluted river into the Bohai Sea, China.

PubMed

Li, Qifeng; Wang, Tieyu; Zhu, Zhaoyun; Meng, Jing; Wang, Pei; Suriyanarayanan, Sarvajayakesavalu; Zhang, Yueqing; Zhou, Yunqiao; Song, Shuai; Lu, Yonglong; Yvette, Baninla

2017-01-01

Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are extremely persistent in the environment, and have the potential for long-range transport. The present study focused on the Daling River and its tributary, a larger river flowing into Liaodong Bay of the Bohai Sea. Recent studies have shown the elevated levels of PFOS and PFOA in the Daling River. Hence, the objective of this study was to investigate the seasonal changes, fate and transport modeling of PFOS and PFOA concentrations using one-dimensional DHI MIKE-11 river model. We designed three scenarios to assess the risk of PFOS and PFOA in surface water: the measured concentrations, constant maximum and the magnitude of a continuous constant load. The mean absolute errors divided by the mean of measured concentrations were 41-64% for PFOS and 29-36% for PFOA. The result indicated that PFOS and PFOA in the downstream of the Daling River would not reach a harmful level with the current load. The fluorochemical parks contributed an average of 44.57% of the total PFOS and 95.44% of the total PFOA flow that reached the estuary. The mass flow was observed as 1.74 kg y -1 for PFOS and 40.57 kg y -1 for PFOA to the Bohai Sea. These modeling results may be useful for monitoring the status and trends of emerging POPs and will help the determination of the risk to both humans and wildlife, in the estuarine and coastal areas of the Bohai Sea, China. Copyright © 2016 Elsevier Ltd. All rights reserved.

Intermediate accelerated solutions as generic late-time attractors in a modified Jordan-Brans-Dicke theory

NASA Astrophysics Data System (ADS)

Cid, Antonella; Leon, Genly; Leyva, Yoelsy

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, phi, 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 phi 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) simeq eα1 tp1, as t → ∞ where α1 > 0 and 0 < p1 < 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 fraktur a(fraktur t) simeq eα2 fraktur tp2 as fraktur t → ∞ where α2 > 0 and 0

Dale Reed with model in front of M2-F1

NASA Technical Reports Server (NTRS)

1967-01-01

Dale Reed with a model of the M2-F1 in front of the actual lifting body. Reed used the model to show the potential of the lifting bodies. He first flew it into tall grass to test stability and trim, then hand-launched it from buildings for longer flights. Finally, he towed the lifting-body model aloft using a powered model airplane known as the 'Mothership.' A timer released the model and it glided to a landing. Dale's wife Donna used a 9 mm. camera to film the flights of the model. Its stability as it glided--despite its lack of wings--convinced Milt Thompson and some Flight Research Center engineers including the center director, Paul Bikle, that a piloted lifting body was possible. The lifting body concept evolved in the mid-1950s as researchers considered alternatives to ballistic reentries of piloted space capsules. The designs for hypersonic, wingless vehicles were on the boards at NASA Ames and NASA Langley facilities, while the US Air Force was gearing up for its Dyna-Soar program, which defined the need for a spacecraft that would land like an airplane. Despite favorable research on lifting bodies, there was little support for a flight program. Dryden engineer R. Dale Reed was intrigued with the lifting body concept, and reasoned that some sort of flight demonstration was needed before wingless aircraft could be taken seriously. In February 1962, he built a model lifting body based upon the Ames M2 design, and air-launched it from a radio controlled 'mothership.' Home movies of these flights, plus the support of research pilot Milt Thompson, helped pursuade the facilities director, Paul Bikle, to give the go-ahead for the construction of a full-scale version, to be used as a wind-tunnel model and possibly flown as a glider. Comparing lifting bodies to space capsules, an unofficial motto of the project was, 'Don't be Rescued from Outer Space--Fly Back in Style.' The construction of the M2-F1 was a joint effort by Dryden and a local glider manufacturer, the

Intermediate accelerated solutions as generic late-time attractors in a modified Jordan-Brans-Dicke theory

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cid, Antonella; Leon, Genly; Leyva, Yoelsy, E-mail: acidm@ubiobio.cl, E-mail: genly.leon@ucv.cl, E-mail: yoelsy.leyva@uta.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. Wemore » 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« less

Spin squeezing as an indicator of quantum chaos in the Dicke model.

PubMed

Song, Lijun; Yan, Dong; Ma, Jian; Wang, Xiaoguang

2009-04-01

We study spin squeezing, an intrinsic quantum property, in the Dicke model without the rotating-wave approximation. We show that the spin squeezing can reveal the underlying chaotic and regular structures in phase space given by a Poincaré section, namely, it acts as an indicator of quantum chaos. Spin squeezing vanishes after a very short time for an initial coherent state centered in a chaotic region, whereas it persists over a longer time for the coherent state centered in a regular region of the phase space. We also study the distribution of the mean spin directions when quantum dynamics takes place. Finally, we discuss relations among spin squeezing, bosonic quadrature squeezing, and two-qubit entanglement in the dynamical processes.

Pryce-Hoyle Tensor in a Combined Einstein-Cartan-Brans-Dicke Model

NASA Astrophysics Data System (ADS)

Berman, Marcelo Samuel

2009-03-01

In addition to introducing matter injection through a scalar field determined by Pryce-Hoyle tensor, we also combine it with a BCDE (Brans-Dicke-Einstein-Cartan) theory with lambda-term developed earlier by Berman (Astrophys. Space Sci. 314:79-82, 2008), for inflationary scenario. It involves a variable cosmological constant, which decreases with time, jointly with energy density, cosmic pressure, shear, vorticity, and Hubble’s parameter, while the scale factor, total spin and scalar field increase exponentially. The post-inflationary fluid resembles a perfect one, though total spin grows, but not the angular speed (Berman, in Astrophys. Space Sci. 312:275, 2007). The Pryce-Hoyle tensor, which can measured by the number of injected particles per unit proper volume and time, as well as shear and vorticity, can be neglected in the aftermath of inflation (“no-hair”).

Cooperative emission of light by an ensemble of dipoles near a metal nanoparticle: the plasmonic Dicke effect.

PubMed

Pustovit, Vitaliy N; Shahbazyan, Tigran V

2009-02-20

We identify a new mechanism for cooperative emission of light by an ensemble of N dipoles near a metal nanostructure supporting a surface plasmon. The cross talk between emitters due to the virtual plasmon exchange leads to the formation of three plasmonic superradiant modes whose radiative decay rates scale with N, while the total radiated energy is thrice that of a single emitter. Our numerical simulations indicate that the plasmonic Dicke effect survives nonradiative losses in the metal.

Edgar Dale's Pyramid of Learning in medical education: a literature review.

PubMed

Masters, Ken

2013-11-01

Edgar Dale's Pyramid of Learning and percentages of retained learning are cited in educational literature in a range of disciplines. The sources of the Pyramid, however, are misleading. To examine the evidence supporting the Pyramid and the extent to which it is cited in medical education literature. A review of literature (1946-2012) based on a search utilising Academic Search Complete, CINAHL, Medline and Google Scholar conducted from September to November 2012. A total of 43 peer-reviewed medical education journal articles and conference papers were found. While some researchers had been misled by their sources, other authors' interpretations of the citations did not align with the content of those citations, had no such citations, had circular references, or consulted questionable sources. There was no agreement on the percentages of learning retention, in spite of many researchers' citing primary texts. The inappropriate citing of the Pyramid and its associated percentages in medical education literature is widespread and continuous. This citing undermines much of the published work, and impacts on research-based medical education literature. While the area of learning/teaching strategies and amount of retention from each is an area for future research, any reference to the Pyramid should be avoided.

On the emergence of the ΛCDM model from self-interacting Brans-Dicke theory in d= 5

NASA Astrophysics Data System (ADS)

Reyes, Luz Marina; Perez Bergliaffa, Santiago Esteban

2018-01-01

We investigate whether a self-interacting Brans-Dicke theory in d=5 without matter and with a time-dependent metric can describe, after dimensional reduction to d=4, the FLRW model with accelerated expansion and non-relativistic matter. By rewriting the effective 4-dimensional theory as an autonomous 3-dimensional dynamical system and studying its critical points, we show that the ΛCDM cosmology cannot emerge from such a model. This result suggests that a richer structure in d=5 may be needed to obtain the accelerated expansion as well as the matter content of the 4-dimensional universe.

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.

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.

Comparative sound velocity measurements between porous rock and fully-dense material under crustal condition: The cases of Darley Dale sandstone and copper block

NASA Astrophysics Data System (ADS)

Kung, J.; Chien, Y. V.; Wu, W.; Dong, J.; Chang, Y.; Tsai, C.; Yang, M.; Wang, K.

2012-12-01

Previous studies showed that the voids and their geometry in the sedimentary rocks have great influence on the compressibility of rock, which reflects on its elastic velocities. Some models were developed to discuss the relations among velocity, porosity and void geometry. Therefore, the information of porosity, and void geometry and its distribution in rock is essential for understanding how the elastic properties of porous rocks affected by their poregeometry. In this study, we revisited a well-studied porous rock, Darley Dale sandstone, which has been studied by different groups with different purposes. Most of them are the deformation experiments. Different from previous studies, we measured the sound velocity of Darley dale sandstone under hydrostatic conditions. Also, we employed different techniques to investigate the pore geometry and porosity of Darley Dale sandstone to gain the insight of velocity changing behavior under the crustal conditions. Here, we measured a fully-dense copper block for a comparison. We performed X-ray CT scanning (XCT) to image the pore space of sandstone to construct the 3-D image of pore geometry, distribution and the pore size. The CT image data are allowed us to estimate the porosity of sandstone, too. One the other hand, the porosity of sample was measured using imbibitions method at ambient conditions and helium porosimeter at high pressure (up to 150 MPa). A set of specimens were cored from Darley Dale sandstone block. P and S wave velocities of specimens were measured at ambient conditions. We also performed high pressure velocity measurements on a selected rock specimen and a copper block up to 150 MPa under dry condition. Porosity of a set of rock specimens measured by imbibitions method was spanned from 6% to 15%, largely distributed within a range of 8%-11%. Compared the porosity obtained from three different techniques, imbibitions method, helium porosimeter and XCT, values from those measurements are in good agreement

Fano-Agarwal couplings and non-rotating wave approximation in single-photon timed Dicke subradiance

NASA Astrophysics Data System (ADS)

Mirza, Imran M.; Begzjav, Tuguldur

2016-04-01

Recently a new class of single-photon timed Dicke (TD) subradiant states has been introduced with possible applications in single-photon-based quantum information storage and on demand ultrafast retrieval (Scully M. O., Phys. Rev. Lett., 115 (2015) 243602). However, the influence of any kind of virtual processes on the decay of these new kind of subradiant states has been left as an open question. In the present paper, we focus on this problem in detail. In particular, we investigate how pure Fano-Agarwal couplings and other virtual processes arising from non-rotating wave approximation impact the decay of otherwise sub- and superradiant states. In addition to the overall virtual couplings among all TD states, we also focus on the dominant role played by the couplings between specific TD states.

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.

On the relationship between the classical Dicke-Jaynes-Cummings-Gaudin model and the nonlinear Schroedinger equation

DOE Office of Scientific and Technical Information (OSTI.GOV)

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 generalizedmore » action-angle coordinates are introduced via the Hamilton-Jacobi equation.« less

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.

Walter Max Dale (formerly Deutsch) (1894-1969): pioneer and eminent radiobiochemist at the Christie Hospital and Holt Radium Institute, Manchester.

PubMed

Shreeve, David R

2010-05-01

The political upheaval in Germany in 1933 and subsequent movement of medical scholars with the support of the Rockefeller Foundation allowed Manchester to benefit from the arrival of Dr Walter Deutsch, later known as Dr Walter Dale. His research background enabled him to develop a radiobiochemistry laboratory at the Christie Hospital and Holt Radium Institute where he became a world authority on the effects of X-rays on enzymes and also the protective effect of additional solutes. In 1959 he initiated and then edited the International Journal of Radiation Biology. By the time of his retirement in 1962 the strength of his research resulted in his laboratory being recognized by the Medical Research Council.

Superfund Record of Decision (EPA Region 3): William Dick Lagoons, West Caln Township, Chester County, PA. (First remedial action), June 1991

DOE Office of Scientific and Technical Information (OSTI.GOV)

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 Birchmore » 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.« less

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

Non-singular Brans–Dicke collapse in deformed phase space

DOE Office of Scientific and Technical Information (OSTI.GOV)

Rasouli, S.M.M., E-mail: mrasouli@ubi.pt; Centro de Matemática e Aplicações; Physics Group, Qazvin Branch, Islamic Azad University, Qazvin

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 theorymore » 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.« less

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.

Modified Holographic Ricci Dark Energy in Chameleon Brans-Dicke Cosmology and Its Thermodynamic Consequence

NASA Astrophysics Data System (ADS)

Jawad, A.; Chattopadhyay, S.; Bhattacharya, S.; Pasqua, A.

2015-04-01

The objective of this paper is to discuss the Chameleon Brans-Dicke gravity with non-minimally matter coupling of scalar field. We take modified Holographic Ricci dark energy model in this gravity with its energy density in interaction with energy density of cold dark matter. We assume power-law ansatz for scale factor and scalar field to discuss potential as well as coupling functions in the evolving universe. These reconstructed functions are plotted versus scalar field and time for different values of power component of scale factor n. We observe that potential and coupling functions represent increasing behavior, in particular, consistent results for a specific value of n. Finally, we have examined validity of the generalized second law of thermodynamics and we have observed its validity for all values of n. The financial Supported from Department of Science and Technology, Govt. of India under Project Grant No. SR/FTP/PS-167/2011 is thankfully acknowledged by SC

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.

Modelling the effects of stranding on the Atlantic salmon population in the Dale River, Norway.

PubMed

Sauterleute, Julian F; Hedger, Richard D; Hauer, Christoph; Pulg, Ulrich; Skoglund, Helge; Sundt-Hansen, Line E; Bakken, Tor Haakon; Ugedal, Ola

2016-12-15

Rapid dewatering in rivers as a consequence of hydropower operations may cause stranding of juvenile fish and have a negative impact on fish populations. We implemented stranding into an Atlantic salmon population model in order to evaluate long-term effects on the population in the Dale River, Western Norway. Furthermore, we assessed the sensitivity of the stranding model to dewatered area in comparison to biological parameters, and compared different methods for calculating wetted area, the main abiotic input parameter to the population model. Five scenarios were simulated dependent on fish life-stage, season and light level. Our simulation results showed largest negative effect on the population abundance for hydropeaking during winter daylight. Salmon smolt production had highest sensitivity to the stranding mortality of older juvenile fish, suggesting that stranding of fish at these life-stages is likely to have greater population impacts than that of earlier life-stages. Downstream retention effects on the ramping velocity were found to be negligible in the stranding model, but are suggested to be important in the context of mitigation measure design. Copyright © 2016 Elsevier B.V. All rights reserved.

Dynamics of coherent states in regular and chaotic regimes of the non-integrable Dicke model

NASA Astrophysics Data System (ADS)

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

2018-04-01

The quantum dynamics of initial coherent states is studied in the Dicke model and correlated with the dynamics, regular or chaotic, of their classical limit. Analytical expressions for the survival probability, i.e. the probability of finding the system in its initial state at time t, are provided in the regular regions of the model. The results for regular regimes are compared with those of the chaotic ones. It is found that initial coherent states in regular regions have a much longer equilibration time than those located in chaotic regions. The properties of the distributions for the initial coherent states in the Hamiltonian eigenbasis are also studied. It is found that for regular states the components with no negligible contribution are organized in sequences of energy levels distributed according to Gaussian functions. In the case of chaotic coherent states, the energy components do not have a simple structure and the number of participating energy levels is larger than in the regular cases.

Profile and bioconcentration of minerals by King Bolete (Boletus edulis) from the Płocka Dale in Poland.

PubMed

Frankowska, Aneta; Ziółkowska, Joanna; Bielawski, Leszek; Falandysz, Jerzy

2010-01-01

This study aimed to provide basic data on the composition of metallic elements, including toxicologically important Cd and Hg, in popular and prized wild King Bolete mushrooms. We investigated the importance of soil substratum as a source of these metals. ICP-OES and CV-AAS were applied to determine the profile of Al, Ba, Ca, Cd, Cu, Fe, Hg, K, Mg, Mn, Na, Sr and Zn in caps and stipes of King Bolete mushroom and in the surface layer of soil (0-10 cm) from the Płocka Dale area of Poland. Hg, Cu, Cd, Zn, Mg and K exhibited bioconcentration factors (BCF) > 1. Specifically, Hg, Cu and Cd (mean BCFs for caps were 110, 19 and 16, respectively) were efficiently bioconcentrated by King Bolete, while other elements were bioexcluded (BCF < 1). Cadmium was present in the caps at mean levels of 5.5 ± 2.4 mg kg(-1) dry weight (dw) and mercury at levels of 4.9 ± 1.4 mg kg(-1) dw, both occurring at elevated concentrations in those King Bolete mushrooms surveyed.

The UK-DALE dataset, domestic appliance-level electricity demand and whole-house demand from five UK homes.

PubMed

Kelly, Jack; Knottenbelt, William

2015-01-01

Many countries are rolling out smart electricity meters. These measure a home's total power demand. However, research into consumer behaviour suggests that consumers are best able to improve their energy efficiency when provided with itemised, appliance-by-appliance consumption information. Energy disaggregation is a computational technique for estimating appliance-by-appliance energy consumption from a whole-house meter signal. To conduct research on disaggregation algorithms, researchers require data describing not just the aggregate demand per building but also the 'ground truth' demand of individual appliances. In this context, we present UK-DALE: an open-access dataset from the UK recording Domestic Appliance-Level Electricity at a sample rate of 16 kHz for the whole-house and at 1/6 Hz for individual appliances. This is the first open access UK dataset at this temporal resolution. We recorded from five houses, one of which was recorded for 655 days, the longest duration we are aware of for any energy dataset at this sample rate. We also describe the low-cost, open-source, wireless system we built for collecting our dataset.

Coupled production and emission of short chain perfluoroalkyl acids from a fast developing fluorochemical industry: Evidence from yearly and seasonal monitoring in Daling River Basin, China.

PubMed

Wang, Pei; Lu, Yonglong; Wang, Tieyu; Zhu, Zhaoyun; Li, Qifeng; Meng, Jing; Su, Hongqiao; Johnson, Andrew C; Sweetman, Andrew J

2016-11-01

Short chain perfluoroalkyl acids (PFAAs) have been developed since 2002 by the major manufacturers to replace the conventional C8 and higher homologues, with much of the world production shifted to China in recent years. In this study, we conducted a continuous monitoring program over the period 2011-2014 with seasonal monitoring in 2013 for PFAAs emitted from two rapidly developing fluorochemical industry parks located in the Daling River Basin, Northern China. The trend of PFAA contamination was identified, dominated by perfluorobutane sulfonic acid (PFBS), perfluorobutanoic acid (PFBA) and perfluorooctanoic acid (PFOA), with the maximum concentrations of 3.78 μg/L, 3.70 μg/L, and 1.95 μg/L, respectively. Seasonal monitoring uncovered the occasional emission of perfluorooctane sulfonic acid (PFOS). Construction trends of new facilities and associated manufacturing capacity of the main products were also analyzed to assess correlations with PFAA emissions. An assessment of the data over the period 2011-2014 found a positive correlation with fluorocarbon alcohol (FCA) production and emission of PFAAs. Groundwater and tap water around the main source indicated that the dominant PFAAs had different diffusion behaviors. PFBS levels were higher in surface water, while PFBA was dominant in groundwater and tap water, with PFOA levels being higher in downstream groundwater. Considering the continuous expansion and development of fluorochemical industry in the Daling River Basin, this study will provide abundant information on the effectiveness of risk assessment and management. Copyright © 2016 Elsevier Ltd. All rights reserved.

Using the Bivariate Dale Model to jointly estimate predictors of frequency and quantity of alcohol use.

PubMed

McMillan, Garnett P; Hanson, Tim; Bedrick, Edward J; Lapham, Sandra C

2005-09-01

This study demonstrates the usefulness of the Bivariate Dale Model (BDM) as a method for estimating the relationship between risk factors and the quantity and frequency of alcohol use, as well as the degree of association between these highly correlated drinking measures. The BDM is used to evaluate childhood sexual abuse, along with age and gender, as risk factors for the quantity and frequency of beer consumption in a sample of driving-while-intoxicated (DWI) offenders (N = 1,964; 1,612 men). The BDM allows one to estimate the relative odds of drinking up to each level of ordinal-scaled quantity and frequency of alcohol use, as well as model the degree of association between quantity and frequency of alcohol consumption as a function of covariates. Individuals who experienced childhood sexual abuse have increased risks of higher quantity and frequency of beer consumption. History of childhood sexual abuse has a greater effect on women, causing them to drink higher quantities of beer per drinking occasion. The BDM is a useful method for evaluating predictors of the quantity-frequency of alcohol consumption. SAS macrocode for fitting the BDM model is provided.

Dynamic recrystallization mechanisms and their transition in the Daling Thrust (DT) zone, Darjeeling-Sikkim Himalaya

NASA Astrophysics Data System (ADS)

Ghosh, Subhajit; Bose, Santanu; Mandal, Nibir; Dasgupta, Sujoy

2016-04-01

The Daling Thrust (DT) delineates a zone of intense shear localization in the Lesser Himalayan Sequence (LHS) of the Darjeeling-Sikkim Himalaya. From microstructural studies of deformed quartzite samples, we show a transition in the dynamic recrystallization mechanism with increasing distance from the DT, dominated by grain boundary bulging (BLG) recrystallization closest to the DT, and progressively replaced by sub-grain rotation (SGR) recrystallization away from the thrust. The transition is marked by a characteristic variation in the fractal dimension (D) of grain boundaries, estimated from the area-perimeter method. For the BLG regime, D ≈ 1.046, which decreases significantly to a value as low as 1.025 for the SGR regime. Using the available thermal data for BLG and SGR recrystallization, we infer increasing deformation temperatures away from the DT in the hanging wall. Based on the quartz piezometer our estimates reveal strong variations in the flow stress (59.00 MPa to 16.00 MPa) over a distance of 1.2 km from the DT. Deformation mechanism maps constructed for different temperatures indicate that the strain rates (10- 12 S- 1 to 10- 14 S- 1) comply with the geologically possible range. Finally, we present a mechanical model to provide a possible explanation for the cause of stress intensification along the DT.

Obtaining the Thermal Efficiency of a Steam Railroad Machine Toy According Dale's Cone of Learning

NASA Astrophysics Data System (ADS)

Bautista-Hernandez, Omar Tomas; Ruiz-Chavarria, Gregorio

2011-03-01

Physics is crucial to understanding the world around us, the world inside us, and the world beyond us. It is the most basic and fundamental science, hence, our interest in developing innovative strategies supported by the imagination and knowledge to make the learning process funny, attractive and interesting to people, so, we can help to change the general idea that Physics is an abstract and complicated science. We all know this instinctively, however, turn-of-the-century educationist Edgar Dale illustrated this with research when he developed the Cone of Learning - which states that after two weeks we remember only 10% of what we read, but we remember 90% of what we do. Based on that theory, we obtain the thermal efficiency of a steam railroad machine -this is a toy train that could be bought at any department store-, and show you the great percentage of energy lost when moving this railroad machine, just as the real life is. While doing this practice we don't focus on the results itself, instead, we try to demostrate that physics is funny and it is not difficult to learn. We must stress that this practice was done with pre-universitary and univesitary students, however, can be shown to the community in general.

Astronaut Candiates - 1978 Shuttle Program

NASA Image and Video Library

2010-01-25

S78-26481 (January 1978) --- This is a montage of the individual portraits of the 35-member 1978 class of astronaut candidates. From left to right are Guion S. Bluford, Daniel C. Brandenstein, James F. Buchli, Michael L. Coats, Richard O. Covey, John O. Creighton, John M. Fabian, Anna L. Fisher, Dale A. Gardner, Robert L. Gibson, Frederick D. Gregory, S. David Griggs, Terry J. Hart, Frederick H. (Rick) Hauck, Steven A. Hawley, Jeffrey A. Hoffman, Shannon W. Lucid, Jon A. McBride, Ronald E. McNair, Richard M. (Mike) Mullane, Steven R. Nagel, George D. Nelson, Ellison S. Onizuka, Judith A. Resnik, Sally K. Ride, Francis R. (Dick) Scobee, Rhea Seddon, Brewster H. Shaw Jr., Loren J. Shriver, Robert L. Stewart, Kathryn D. Sullivan, Norman E. Thagard, James D. Van Hoften, David M. Walker and Donald E. Williams. Photo credit: NASA or National Aeronautics and Space Administration

Superfund record of decision (EPA Region 3): William Dick Lagoons, West Caln Township, Chester County, PA, March 1993

DOE Office of Scientific and Technical Information (OSTI.GOV)

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, themore » 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.« less

Quantum phase transitions of light in a dissipative Dicke-Bose-Hubbard model

NASA Astrophysics Data System (ADS)

Wu, Ren-Cun; Tan, Lei; Zhang, Wen-Xuan; Liu, Wu-Ming

2017-09-01

The impact that the environment has on the quantum phase transition of light in the Dicke-Bose-Hubbard model is investigated. Based on the quasibosonic approach, mean-field theory, and perturbation theory, the formulation of the Hamiltonian, the eigenenergies, and the superfluid order parameter are obtained analytically. Compared with the ideal cases, the order parameter of the system evolves with time as the photons naturally decay in their environment. When the system starts with the superfluid state, the dissipation makes the photons more likely to localize, and a greater hopping energy of photons is required to restore the long-range phase coherence of the localized state of the system. Furthermore, the Mott lobes depend crucially on the numbers of atoms and photons (which disappear) of each site, and the system tends to be classical with the number of atoms increasing; however, the atomic number is far lower than that expected under ideal circumstances. As there is an inevitable interaction between the coupled-cavity array and its surrounding environment in the actual experiments, the system is intrinsically dissipative. The results obtained here provide a more realistic image for characterizing the dissipative nature of quantum phase transitions in lossy platforms, which will offer valuable insight into quantum simulation of a dissipative system and which are helpful in guiding experimentalists in open quantum systems.

The UK-DALE dataset, domestic appliance-level electricity demand and whole-house demand from five UK homes

PubMed Central

Kelly, Jack; Knottenbelt, William

2015-01-01

Many countries are rolling out smart electricity meters. These measure a home’s total power demand. However, research into consumer behaviour suggests that consumers are best able to improve their energy efficiency when provided with itemised, appliance-by-appliance consumption information. Energy disaggregation is a computational technique for estimating appliance-by-appliance energy consumption from a whole-house meter signal. To conduct research on disaggregation algorithms, researchers require data describing not just the aggregate demand per building but also the ‘ground truth’ demand of individual appliances. In this context, we present UK-DALE: an open-access dataset from the UK recording Domestic Appliance-Level Electricity at a sample rate of 16 kHz for the whole-house and at 1/6 Hz for individual appliances. This is the first open access UK dataset at this temporal resolution. We recorded from five houses, one of which was recorded for 655 days, the longest duration we are aware of for any energy dataset at this sample rate. We also describe the low-cost, open-source, wireless system we built for collecting our dataset. PMID:25984347

The UK-DALE dataset, domestic appliance-level electricity demand and whole-house demand from five UK homes

NASA Astrophysics Data System (ADS)

Kelly, Jack; Knottenbelt, William

2015-03-01

Many countries are rolling out smart electricity meters. These measure a home’s total power demand. However, research into consumer behaviour suggests that consumers are best able to improve their energy efficiency when provided with itemised, appliance-by-appliance consumption information. Energy disaggregation is a computational technique for estimating appliance-by-appliance energy consumption from a whole-house meter signal. To conduct research on disaggregation algorithms, researchers require data describing not just the aggregate demand per building but also the ‘ground truth’ demand of individual appliances. In this context, we present UK-DALE: an open-access dataset from the UK recording Domestic Appliance-Level Electricity at a sample rate of 16 kHz for the whole-house and at 1/6 Hz for individual appliances. This is the first open access UK dataset at this temporal resolution. We recorded from five houses, one of which was recorded for 655 days, the longest duration we are aware of for any energy dataset at this sample rate. We also describe the low-cost, open-source, wireless system we built for collecting our dataset.

KSC-08pd1526

NASA Image and Video Library

2008-05-31

CAPE CANAVERAL, Fla. -- All eyes look skyward as space shuttle Discovery launches on its STS-124 mission. The group gathered here at the Banana River viewing site at NASA's Kennedy Space Center are members of the first graduating class of astronauts after the Apollo program. In 1978 a new group of 35 astronauts was selected after nine years without new astronauts. The pilots were Daniel Brandenstein, Michael Coats, Richard Covey, John Creighton, Robert Gibson, Frederick D. Gregory, Frederick Hauck, Jon McBride, Francis "Dick" Scobee, Brewster Shaw, Loren Shriver, David Walker and Donald Williams. The mission specialists were Guion Bluford, James Buchli, John Fabian, Anna Fisher, Dale Gardner, S. David Griggs, Terry Hart, Steven Hawley, Jeffrey Hoffman, Shannon Lucid, Ronald McNair, Richard Mullane, Steven Nagel, George Nelson, Ellison Onizuka, Judith Resnik, Sally Ride, Rhea Seddon, Robert Stewart, Kathryn D. Sullivan, Norman Thagard and James van Hoften. Since then, a new group has been selected roughly every two years. Photo credit: NASA/Jim Grossmann

KSC-08pd1524

NASA Image and Video Library

2008-05-31

CAPE CANAVERAL, Fla. -- A group from the first graduating class of astronauts after the Apollo program gathers at the Banana River viewing site at NASA's Kennedy Space Center before the launch of space shuttle Discovery on its STS-124 mission. In 1978 a new group of 35 astronauts was selected after nine years without new astronauts. The pilots were Daniel Brandenstein, Michael Coats, Richard Covey, John Creighton, Robert Gibson, Frederick D. Gregory, Frederick Hauck, Jon McBride, Francis "Dick" Scobee, Brewster Shaw, Loren Shriver, David Walker and Donald Williams. The mission specialists were Guion Bluford, James Buchli, John Fabian, Anna Fisher, Dale Gardner, S. David Griggs, Terry Hart, Steven Hawley, Jeffrey Hoffman, Shannon Lucid, Ronald McNair, Richard Mullane, Steven Nagel, George Nelson, Ellison Onizuka, Judith Resnik, Sally Ride, Rhea Seddon, Robert Stewart, Kathryn D. Sullivan, Norman Thagard and James van Hoften. Since then, a new group has been selected roughly every two years. Photo credit: NASA/Jim Grossmann

Health assessment for William Dick Lagoons, Honeybrook, Pennsylvania, Region 3. CERCLIS No. PAD980537773. Preliminary report

DOE Office of Scientific and Technical Information (OSTI.GOV)

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 contaminatedmore » 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.« less

Rotational spectroscopy of cold and trapped molecular ions in the Lamb-Dicke regime

NASA Astrophysics Data System (ADS)

Alighanbari, S.; Hansen, M. G.; Korobov, V. I.; Schiller, S.

2018-06-01

Sympathetic cooling of trapped ions has been established as a powerful technique for the manipulation of non-laser-coolable ions1-4. For molecular ions, it promises vastly enhanced spectroscopic resolution and accuracy. However, this potential remains untapped so far, with the best resolution achieved being not better than 5 × 10-8 fractionally, due to residual Doppler broadening being present in ion clusters even at the lowest achievable translational temperatures5. Here we introduce a general and accessible approach that enables Doppler-free rotational spectroscopy. It makes use of the strong radial spatial confinement of molecular ions when trapped and crystallized in a linear quadrupole trap, providing the Lamb-Dicke regime for rotational transitions. We achieve a linewidth of 1 × 10-9 fractionally and 1.3 kHz absolute, an improvement of ≃50-fold over the previous highest resolution in rotational spectroscopy. As an application, we demonstrate the most precise test of ab initio molecular theory and the most accurate (1.3 × 10-9) determination of the proton mass using molecular spectroscopy. The results represent the long overdue extension of Doppler-free microwave spectroscopy of laser-cooled atomic ion clusters6 to higher spectroscopy frequencies and to molecules. This approach enables a wide range of high-accuracy measurements on molecules, both on rotational and, as we project, vibrational transitions.

The utility of Pinus sylvestris L. in dendrochemical investigations: pollution impact of lead mining and smelting in Darley Dale, Derbyshire, UK.

PubMed

Lageard, J G A; Howell, J A; Rothwell, J J; Drew, I B

2008-05-01

This research investigates atmospheric pollution from an isolated and increasingly productive lead-smelting site by examining the dendrochemistry of Pinus sylvestris growing in the local environment and at control sites. Tree increment cores and soil in the rooting environment were analysed for lead content. Inter-site comparisons of lead-in-soil suggest that contamination of the soil may be a less important pathway for lead inclusion within wood than pathways via bark or needles. Levels of lead-in-wood (up to 38mgkg(-1)) are at the upper end of those previously reported. There is evidence of radial translocation of lead towards the heartwood and variability in intra-site dendrochemical records. Mean site lead-in-wood records can however be related to a well-documented pollution chronology and also suggest the importance of local topography in the dispersal and deposition of particulate lead. This study demonstrates that P. sylvestris can be used to estimate the scale and timing of past pollution episodes in similar environmental contexts to those investigated at Darley Dale, where precisely dated pollution chronologies are lacking.

KSC-08pd1525

NASA Image and Video Library

2008-05-31

CAPE CANAVERAL, Fla. -- Brewster Shaw is a former astronaut from the first graduating class of astronauts after the Apollo program. He and others from the class were guests at NASA's Kennedy Space Center for the launch of space shuttle Discovery on its STS-124 mission. Shaw is Vice President and General Manager, Space Exploration, for Integrated Defense Systems, The Boeing Company. In 1978 a new group of 35 astronauts was selected after nine years without new astronauts. The pilots were Daniel Brandenstein, Michael Coats, Richard Covey, John Creighton, Robert Gibson, Frederick D. Gregory, Frederick Hauck, Jon McBride, Francis "Dick" Scobee, Brewster Shaw, Loren Shriver, David Walker and Donald Williams. The mission specialists were Guion Bluford, James Buchli, John Fabian, Anna Fisher, Dale Gardner, S. David Griggs, Terry Hart, Steven Hawley, Jeffrey Hoffman, Shannon Lucid, Ronald McNair, Richard Mullane, Steven Nagel, George Nelson, Ellison Onizuka, Judith Resnik, Sally Ride, Rhea Seddon, Robert Stewart, Kathryn D. Sullivan, Norman Thagard and James van Hoften. Since then, a new group has been selected roughly every two years. Photo credit: NASA/Jim Grossmann

CREW CANDIDATES - SHUTTLE - JSC

NASA Image and Video Library

1977-01-31

S78-26569 (31 Jan. 1978) --- The 35 new astronaut candidates, presented Jan. 31, 1978, in the Building 2 auditorium at NASA's Johnson Space Center, pose for photographers. They are arranged in alphabetical order with top left as beginning point and bottom right as stopping point. They are Guion S. Bluford, Daniel C. Brandenstein, James F. Buchli, Michael L. Coats, Richard O. Covey, John O. Creighton, John M. Fabian, Anna L. Fisher, Dale A. Gardner, Robert L. Gibson, Frederick D. Gregory, S. David Griggs, Terry J. Hart, Frederick H. (Rick) Hauck, Steven A. Hawley, Jeffrey A. Hoffman, Shannon W. Lucid, Jon A. McBride, Ronald E. McNair, Richard M. (Mike) Mullane, Steven R. Nagel, George D. Nelson, Ellison S. Onizuka, Judith A. Resnik, Sally K. Ride, Francis R. (Dick) Scobee, Rhea Seddon, Brewster H. Shaw Jr., Loren J. Shriver, Robert L. Stewart, Kathryn D. Sullivan, Norman E. Thagard, James D. van Hoften, David M. Walker and Donald E. Williams. Photo credit: NASA or National Aeronautics and Space Administration

Anisotropic Bianchi-V dark energy model under the new perspective of accelerated expansion of the universe in Brans-Dicke theory of gravitation

NASA Astrophysics Data System (ADS)

Jaiswal, Rekha; Zia, Rashid

2018-04-01

In this paper, we have proposed a cosmological model, which is consistent with the new findings of `The Supernova Cosmology project' headed by Saul Perlmutter, and the `High-Z Supernova Search team', headed by Brian Schimdt. According to these new findings, the universe is undergoing an expansion with an increasing rate, in contrast to the earlier belief that the rate of expansion is constant or the expansion is slowing down. We have considered spatially homogeneous and anisotropic Bianchi-V dark energy model in Brans-Dicke theory of gravitation. We have taken the scale factor a(t)=k t^α e^{β t} , which results into variable deceleration parameter (DP). The graph of DP shows a transition from positive to negative, which shows that universe has passed through the past decelerated expansion to the current accelerated expansion phase. In this context, we have also calculated and plotted various parameters and observed that these are in good agreement with physical and kinematic properties of the universe and are also consistent with recent observations.

Society for College Science Teachers: Revisiting the Cone of Learning--Is it a Reliable Way to Link Instruction Method with Knowledge Recall?

ERIC Educational Resources Information Center

Lord, Thomas

2007-01-01

In his article, Dale had constructed a tiered triangle to rank students' ability to recall information that had been taught six weeks earlier (Dale 1969). Dale had found that only 5% of the knowledge gained through lecture was remembered by students several weeks after it was heard. Dale's original tool for ranking student learning has evolved…

75 FR 72869 - Louisville & Indiana Railroad Company-Trackage Rights Exemption-CSX Transportation, Inc.

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-26

... Belt Subdivision via Dale southeast wye or Dale northeast wye at milepost QSL 1.7, a distance of 2.3... at Dale and milepost QIB 3.2 at CP Woods; (ii) Crawfordsville Branch extending between milepost QSC 1... milepost QIB 5.9 at Dale and milepost QIB 2.9 at CP 1; and (ii) Indianapolis Terminal Subdivision extending...

FRW cosmological models in Brans-Dicke theory of gravity with variable q and dynamical \\varLambda-term

NASA Astrophysics Data System (ADS)

Chand, Avtar; Mishra, R. K.; Pradhan, Anirudh

2016-02-01

Exact solution of modified Einstein's field equations are considered within the scope of spatially homogeneous and isotropic Fraidmann-Robertson-Walker (FRW) space-time filled with perfect fluid in the frame work of Brans-Dicke scalar-tensor theory of gravity. In this paper we have investigated the flat, open and closed FRW models and the effect of dynamic cosmological term on the evolution of the universe. Two types of FRW cosmological models are obtained by setting the power law between the scalar field φ and the scale factor a and deceleration parameter (DP) q as a time dependent. The concept of time dependent DP with some proper assumptions yield two type of the average scale factors (i) a(t)=[sinh(α t)]^{1/n} and (ii) a(t)=[t^{α}et]^{1/n}, α and n≠ 0 are arbitrary constants. In case (i), for 0 < n ≤ 1, it generates a class of accelerating models while for n > 1, the models of the universe exhibit phase transition from early decelerating to present accelerating phase and the transition redshift zt has been calculated and found to be in good agreement with the results from recent astrophysical observations. In case (ii), for n ≥ 2 and α = 1, we obtain a class of transit models of the universe from early decelerating to present accelerating phase. Taking into consideration the observational data, we conclude that the cosmological constant behaves as a positive decreasing function of time. The physical and geometric properties of the models are also discussed with the help of graphical presentations.

Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hansen, Jakob; Yeom, Dong-han, E-mail: hansen@kisti.re.kr, E-mail: innocent.yeom@gmail.com

2015-09-01

We investigate the relation between the existence of mass inflation and model parameters of string-inspired gravity models. In order to cover various models, we investigate a Brans-Dicke theory that is coupled to a U(1) gauge field. By tuning a model parameter that decides the coupling between the Brans-Dicke field and the electromagnetic field, we can make both of models such that the Brans-Dicke field is biased toward strong or weak coupling directions after gravitational collapses. We observe that as long as the Brans-Dicke field is biased toward any (strong or weak) directions, there is no Cauchy horizon and no massmore » inflation. Therefore, we conclude that to induce a Cauchy horizon and mass inflation inside a charged black hole, either there is no bias of the Brans-Dicke field as well as no Brans-Dicke hair outside the horizon or such a biased Brans-Dicke field should be well trapped and controlled by a potential.« less

Charged black holes in string-inspired gravity II. Mass inflation and dependence on parameters and potentials

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hansen, Jakob; Yeom, Dong-han

2015-09-07

We investigate the relation between the existence of mass inflation and model parameters of string-inspired gravity models. In order to cover various models, we investigate a Brans-Dicke theory that is coupled to a U(1) gauge field. By tuning a model parameter that decides the coupling between the Brans-Dicke field and the electromagnetic field, we can make both of models such that the Brans-Dicke field is biased toward strong or weak coupling directions after gravitational collapses. We observe that as long as the Brans-Dicke field is biased toward any (strong or weak) directions, there is no Cauchy horizon and no massmore » inflation. Therefore, we conclude that to induce a Cauchy horizon and mass inflation inside a charged black hole, either there is no bias of the Brans-Dicke field as well as no Brans-Dicke hair outside the horizon or such a biased Brans-Dicke field should be well trapped and controlled by a potential.« less

13. UNIDENTIFIED CABLESTAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TWELVE ...

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

13. UNIDENTIFIED CABLE-STAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TWELVE PANELS, SHOWING CABLE PATTERN SIMILAR TO E.E. RUNYON'S SUSPENSION BRIDGE PATENTS. THE BLUFF DALE SUSPENSION BRIDGE'S CABLES MAY HAVE ORIGINALLY FOLLOWED THIS PATTERN. ELEVATION VIEW. - Bluff Dale Suspension Bridge, Spanning Paluxy River at County Route 149, Bluff Dale, Erath County, TX

12. UNIDENTIFIED CABLESTAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TWELVE ...

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

12. UNIDENTIFIED CABLE-STAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TWELVE PANELS, SHOWING CABLE PATTERN SIMILAR TO E.E. RUNYON'S SUSPENSION BRIDGE PATENTS. THE BLUFF DALE SUSPENSION BRIDGE'S CABLES MAY HAVE ORIGINALLY FOLLOWED THIS PATTERN. 3/4 VIEW FROM ABOVE. - Bluff Dale Suspension Bridge, Spanning Paluxy River at County Route 149, Bluff Dale, Erath County, TX

DOE Office of Scientific and Technical Information (OSTI.GOV)

Paesler, M. A.; Washington, J. S.

From the time he joined the NC State faculty in 1976 until his untimely death in 2004, Dale Sayers enthusiastically offered the strengths of x-ray absorption spectroscopy to colleagues with a wide variety of interests. A master collaborator. Dale teamed with researchers from disciplines as far ranging as solid state physics, biochemistry, electrical engineering, medicine and geology. In this talk, offered as a tribute to these efforts, I will highlight a small subset of Dale's many collaborations with other North Carolina faculty. The few cited examples chosen from a host of collaborations reveal the strength of Dale's science and themore » breadth of his vision. I will also tell of Dale's efforts to build a synchrotron on our campus in an effort that nearly succeeded despite ill-timed political adversity and ultimately tragic obstacles.« less

Dale Jenne | NREL

Science.gov Websites

and focuses on thermal system and economic analysis for low temperature and co-produced hydrothermal mechanical systems and economic analysis has led to his most recent work with the Marine and Hydrokinetic (MHK) team, where he is one of the lead techno-economic analysts for wave and current energy. His areas

77 FR 20530 - Notice of Procedures for Submitting Clarifying Questions Concerning the Flight, Duty, and Rest...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-05

... below. Technical Questions: Dale E. Roberts, Air Transportation Division, Flight Standards Service, Federal Aviation Administration; email dale[email protected] . Legal Questions: Alex Zektser, Office of...

76 FR 23646 - Privacy Act of 1974, as Amended; Correction

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

... notice contained incorrect addresses. FOR FURTHER INFORMATION CONTACT: Dale Underwood, Privacy Act Officer, Department of the Treasury, (202)-622-0874 ( dale[email protected] ). Correction In the...

76 FR 1156 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-07

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... Activities Dated: January 5, 2011. Dale L. Aultman, Secretary, Farm Credit Administration Board. *Session...

76 FR 75878 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-05

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... Examination Supervisory and Oversight Activities. Dated: November 30, 2011. Dale L. Aultman, Secretary, Farm...

76 FR 32360 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-06

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... Supervisory and Oversight Activities. Dated: June 2, 2011. Dale L. Aultman, Secretary, Farm Credit...

76 FR 59110 - Newspapers To Be Used by the Alaska Region for Publication of Legal Notices of Proposed Hazardous...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-23

... Federal Register. ADDRESSES: Robin Dale, Alaska Region Group Leader for Appeals, Litigation and FOIA...: Robin Dale; Alaska Region Group Leader for Appeals, Litigation and FOIA; (907) 586-9344. SUPPLEMENTARY...

77 FR 39239 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-02

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... Funding Conditions Dated: June 28, 2012. Dale L. Aultman, Secretary, Farm Credit Administration Board. [FR...

78 FR 11090 - Flightcrew Member Duty and Rest Requirements; Technical Correction

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-15

... this action, contact Dale E. Roberts, AFS-200, Flight Standards Service, Air Transportation Division...- 5749; email dale[email protected] . For legal questions concerning this action, contact Robert Frenzel...

77 FR 40790 - Flightcrew Member Duty and Rest Requirements; OMB Approval of Information Collection

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-11

... concerning this document, contact Dale E. Roberts, Air Transportation Division (AFS-200), Flight Standards... (202) 267- 5749; email: dale[email protected] . For legal questions concerning this document, contact...

76 FR 26727 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-09

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... Session* Reports Office of Secondary Mortgage Oversight Quarterly Report Dated: May 5, 2011. Dale L...

78 FR 4378 - Annual List of Newspapers To Be Used by the Alaska Region for Publication of Legal Notices of...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-22

... superceded by a new list, published in the Federal Register. ADDRESSES: Robin Dale, Alaska Region Group... 99802-1628. FOR FURTHER INFORMATION CONTACT: Robin Dale; Alaska Region Group Leader for Appeals...

75 FR 145 - Clean Air Act Operating Permit Program; Petition for Objection to State Operating Permit for East...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-01-04

....-- William C. Dale Power Station; Clark County, KY AGENCY: Environmental Protection Agency (EPA). ACTION... Station (Dale Station) located in Clark County, Kentucky. This Order constitutes a final action on the...

77 FR 66838 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-11-07

... FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration Board, (703) 883...* Reports Office of Secondary Market Oversight Quarterly Report Dated: November 2, 2012. Dale L. Aultman...

78 FR 34381 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-06-07

... INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration Board, (703) 883-4009, TTY... Operations Closed Session * Office of Examination Quarterly Report Dated: June 4, 2013. Dale L. Aultman...

78 FR 52762 - Pacific Fishery Management Council; Public Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-26

.... For information regarding the public listening station, contact Dale Sweetnam, telephone: (858) 546... other auxiliary aids should be directed to Dale Sweetnam, at least 5 days prior to the meeting date...

78 FR 38032 - Farm Credit Administration Board; Sunshine Act; Special Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-06-25

... INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration Board, (703) 883-4009, TTY... an Agency Official Dated: June 20, 2013. Dale L. Aultman, Secretary, Farm Credit Administration Board...

How Subjects Do not Store and Retrieve Information About Ordered Relationships.

ERIC Educational Resources Information Center

Potts, George R.

Subjects learned and answered questions about four- or six-term linear orderings (e.g., Tom is taller than Dick, who is taller than Sam, who is taller than Pete). Such an ordering is comprised of some adjacent pairwise relations that are necessary to the establishment of the ordering (e.g., Tom is taller than Dick, Dick is taller than Sam), and…

76 FR 12356 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-07

... concludes its business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit... on Borrowers Rights--Part II. Update on Dodd-Frank Rulemaking Projects. Dated: March 2, 2011. Dale L...

78 FR 55074 - Farm Credit System Insurance Corporation Board; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-09

... CONTACT: Dale L. Aultman, Secretary to the Farm Credit System Insurance Corporation Board, (703) 883-4009... Progress Review and Setting of Premium Range Guidance for 2014 Dated: September 4, 2013. Dale L. Aultman...

77 FR 13126 - Sunshine Act Meeting Notice

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-05

...: Dale L. Aultman, Secretary to the Farm Credit Administration Board, (703) 883-4009, TTY (703) 883-4056..., 2012 Dated: March 1, 2012. Dale L. Aultman, Secretary, Farm Credit Administration Board. [FR Doc. 2012...

76 FR 34704 - Farm Credit Administration Board; Sunshine Act; Special Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-14

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration...: Open Session Request to Merge U.S. AgBank FCB with CoBank ACB Dated: June 10, 2011. Dale L. Aultman...

77 FR 34946 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-12

.... FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration Board... pursuant to 5 U.S.C. 552b(c)(8) and (9). Dated: June 7, 2012. Dale L. Aultman, Secretary, Farm Credit...

A Practical Note on Readability Formulas

ERIC Educational Resources Information Center

Pauk, Walter

1969-01-01

Compares the readability formulas devised by Fry and McLaughlin to the Dale-Chall formula and reports similar results with the Fry and Dale-Chall formulas, but variant results using the McLaughlin formula. Bibliography. (MD)

77 FR 55472 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-09-10

... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration... pursuant to 5 U.S.C. 552b(c)(8) and (9). Dated: September 6, 2012. Dale L. Aultman, Secretary, Farm Credit...

Heinrich Dieter Holland (1927-2012)

NASA Astrophysics Data System (ADS)

Turekian, Karl K.

2012-08-01

Heinrich Dieter "Dick" Holland, who died on 21 May 2012, was responsible for major advances across several fields of geochemistry. He was born on 27 May 1927 and died just short of his 85th birthday. How Dick became a geochemist is an interesting story in itself. I first met Dick when we shared an office as graduate students at Columbia University in New York. He had attended Princeton University in New Jersey and graduated in 1946 with a chemistry major. He had arrived in the United States with his family from Germany in 1940. The family was of Jewish origin, and although Dick and his relatives were not strict practitioners, their fate in Hitler's Germany, dictated by the family's ancestry, would have been undesirable. Dick and his brother first went to England in 1939 to escape the future horrors that were sure to await them if they had remained in Germany. After their parents escaped to the Dominican Republic, Dick and his brother joined them there. With the help of friends, the family came to the United States from the Dominican Republic in 1940 (it was not unusual for immigrants to first come to a landing spot in the western hemisphere prior to admission to the United States).

Simulating superradiance from higher-order-intensity-correlation measurements: Single atoms

NASA Astrophysics Data System (ADS)

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

2015-09-01

Superradiance typically requires preparation of atoms in highly entangled multiparticle states, the so-called Dicke states. In this paper we discuss an alternative route where we prepare such states from initially uncorrelated atoms by a measurement process. By measuring higher-order intensity-intensity correlations we demonstrate that we can simulate the emission characteristics of Dicke superradiance by starting with atoms in the fully excited state. We describe the essence of the scheme by first investigating two excited atoms. Here we demonstrate how via Hanbury Brown and Twiss type of measurements we can produce Dicke superradiance and subradiance displayed commonly with two atoms in the single excited symmetric and antisymmetric Dicke states, respectively. We thereafter generalize the scheme to arbitrary numbers of atoms and detectors, and explain in detail the mechanism which leads to this result. The approach shows that the Hanbury Brown and Twiss type of intensity interference and the phenomenon of Dicke superradiance can be regarded as two sides of the same coin. We also present a compact result for the characteristic functional which generates all order intensity-intensity correlations.

15. View of the Main Office (Buildings 1, 2, and ...

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

15. View of the Main Office (Buildings 1, 2, and 3), U.S. Plant Introduction Station, Glenn Dale, MD, ca. 1950. Facilities and Engineering Branch. Beltsville Agricultural Research Center, Building 426. - U.S. Plant Introduction Station, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

Improving Earthquake and Explosion Discrimination by Using Love and Rayleigh Wave Magnitudes (Postprint) Annual Report 3

DTIC Science & Technology

2012-03-22

ELEMENT NUMBER 62601F 6. AUTHOR(S) Jessie Bonner1, Anastasia Stroujkova1, and Dale N. Anderson2 5d. PROJECT NUMBER 1010 5e...MAGNITUDES Jessie Bonner1, Anastasia Stroujkova1, and Dale N. Anderson2 Weston Geophysical Corporation1 and Los Alamos National Laboratory2

77 FR 29963 - Request for Approval of a New Information Collection

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-21

... Financial Officer Request for Approval of a New Information Collection AGENCY: Office of the Chief Financial.... FOR FURTHER INFORMATION CONTACT: Contact Dale Theurer, Office of the Chief Financial Officer, Fiscal... may be sent to Dale Theurer, Office of the Chief Financial Officer, Debt and Credit Policy Division, U...

Preventing Terror Attacks in the Homeland: A New Mission for State and Local Police

DTIC Science & Technology

2005-09-01

18 Dale Couprie, Alan Goodbrand, Bin Li, and David Zhu, “ Soft Systems Methodology ,” Department of Computer Science (University of Calgary, 2002...Activities Authorization Act.” (50 USC. 403-1). June 2005. Couprie, Dale, Alan Goodbrand, Bin Li, and David Zhu. “ Soft Systems Methodology .” Department

Readability: Blind Faith in Numbers?

ERIC Educational Resources Information Center

McConnell, Campbell

1983-01-01

The Flesch reading formula is questioned as being appropriate for evaluating college economics textbooks. The Dale-Chall, Modified Dale-Chall, Fry, and Flesch formulas were used to evaluate nine introductory textbooks. There was little or no consistency in either the absolute reading levels or the rank orderings. (Author/AM)

A Study of the Committee Structure of Ireland Army Hospital, Fort Knox, Kentucky.

DTIC Science & Technology

1980-08-01

BIBLIOGRAPHY Books Banner, Hubert, Group Dynamics, The Ronald Press Company, N.Y., 1959. Bliss, Edwin C., Getting Things Done, Bantam Books, N.Y., 1978. Carnegie ... Dale , How to Save Time and Get Better Results in Conferences, Dale Carnegie & Associates, Inc., Garden City, N.Y., 1974. Caplow, Theodore, How to

14. UNIDENTIFIED CABLESTAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TEN ...

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

14. UNIDENTIFIED CABLE-STAYED SUSPENSION BRIDGE WITH TIMBER RAILING OF TEN PANELS AND STONE PIER, SHOWING ELEMENTS SIMILAR TO E.E. RUNYON'S SUSPENSION BRIDGE PATENTS, BUT ALTERNATE CABLE PATTERN. 3/4 VIEW FROM BELOW. - Bluff Dale Suspension Bridge, Spanning Paluxy River at County Route 149, Bluff Dale, Erath County, TX

Retrieval Strategies for Linearly Ordered Information

ERIC Educational Resources Information Center

Polich, John M.; Potts, George R.

1977-01-01

Subjects responded to pairs of test items from learned linear orderings (e.g., Tom is taller than Dick; Dick is taller than Sam, etc.). Results are compared with previous studies of ordered linguistic, perceptual, and numerical information. (Editor/RK)

The Readability of an Unreadable Text.

ERIC Educational Resources Information Center

Gordon, Robert M.

1980-01-01

The Dale-Chall Readability Formula and the Fry Readability Graph were used to analyze passages of Plato's "Parmenides," a notoriously difficult literary piece. The readability levels of the text ranged from fourth to eighth grade (Dale-Chall) and from sixth to tenth grade (Fry), indicating the limitations of the readability tests. (DF)

Dale Reed with X-38 and a Subscale Model Used in Test Program

NASA Technical Reports Server (NTRS)

1997-01-01

Dale Reed, a NASA engineer who worked on the original lifting-body research programs in the 1960s and 1970s, stands with a scale-model X-38 that was used in 1995 research flights, with a full-scale X-38 (80 percent of the size of a potential Crew Return Vehicle) behind him. The X-38 Crew Return Vehicle (CRV) research project is designed to develop the technology for a prototype emergency crew return vehicle, or lifeboat, for the International Space Station. The project is also intended to develop a crew return vehicle design that could be modified for other uses, such as a joint U.S. and international human spacecraft that could be launched on the French Ariane-5 Booster. The X-38 project is using available technology and off-the-shelf equipment to significantly decrease development costs. Original estimates to develop a capsule-type crew return vehicle were estimated at more than $2 billion. X-38 project officials have estimated that development costs for the X-38 concept will be approximately one quarter of the original estimate. Off-the-shelf technology is not necessarily 'old' technology. Many of the technologies being used in the X-38 project have never before been applied to a human-flight spacecraft. For example, the X-38 flight computer is commercial equipment currently used in aircraft and the flight software operating system is a commercial system already in use in many aerospace applications. The video equipment for the X-38 is existing equipment, some of which has already flown on the space shuttle for previous NASA experiments. The X-38's primary navigational equipment, the Inertial Navigation System/Global Positioning System, is a unit already in use on Navy fighters. The X-38 electromechanical actuators come from previous joint NASA, U.S. Air Force, and U.S. Navy research and development projects. Finally, an existing special coating developed by NASA will be used on the X-38 thermal tiles to make them more durable than those used on the space

Obituary: Richard B. Dunn, 1927-2005

NASA Astrophysics Data System (ADS)

Keil, Stephen L.; Dooling, David

2007-12-01

Dr. Richard B. Dunn, astronomer emeritus at the National Solar Observatory, died of a heart attack on September 29, 2005. He was recognized as one of the foremost experimental solar physicists. His innovative designs for telescopes and instruments led to many important discoveries in solar physics. Born in Baltimore, Maryland, in 1927 and raised in Minneapolis, Minnesota, Dick's parents were Dr. Halbert L. Dunn and Katherine Brandner. Halbert (MD, Ph.D., F.A.P.H.A.) was an physician who became Chief of the National Office of Vital Statistics, Public Health Service. He published a paper "High Level Wellness for Man and Society" that became the founding paper of the field of wellness health care. After their divorce in 1942, Katherine moved to New York and became a social worker. Dick had two older brothers who died before him, Halbert (born in 1921, who became a civil engineer) and Robert (born in 1924, who became an architect). Dick earned a BS in mechanical engineering and an MS in astronomy at the University of Minnesota. At the end of World War II he served in the United States Army in Japan. For his master's degree, Dick undertook the design and construction of a Lyot-type birefringent filter for observations of solar prominences. This early work led to his acceptance at Harvard, where Professor Donald Menzel encouraged him to continue his work with the 15-inch Cambridge telescope. In 1951 he conducted part of his doctoral thesis work at the fledgling Sacramento Peak Observatory in southern New Mexico. The observatory director, Dr. John Evans, was impressed with Dick's outstanding instrumental talents and invited him to join as one of the first scientific staff members. During his first few years at Sac Peak, Dick developed two more birefringent filter systems including one with an integrated coronagraph. With this system, he produced the best prominence and spicule observations ever obtained. Dick's career was dedicated to obtaining solar observations of the

The production of large and small wildfires

Treesearch

David T. Butry; Marcia Gumpertz; Marc G. Genton

2008-01-01

N aturallarge (catastrophic) disturbances are important because of their potential long-lasting impact on their surroundings, but underlying differences between frequent small and less common large disturbances are not well understood (Turner and Dale 1997, Romme et al. 1998, Turner and Dale 1998, chapter 4 of this book). Smaller disturbances may be better understood...

The Third Battle: Innovation in the U.S. Navy’s Silent Cold War Struggle with Soviet Submarines (Newport Paper No. 16, 2003)

DTIC Science & Technology

2003-01-01

Bonin , Colleen Leonardo, Bruce Rule, John Hanley, Dick Chapman, Greg Duckworth, Ted Wile, Captain Dave Schubert, Jan Breemer, John Brandes, Robert...Nadolink, Jeff Cohen, Bernie Myer, Hal Hultgreen, Dick Bonin , and Colleen Leo- nardo, 13 March 1998. For more on what came to be known as the Atlantic

In memoriam/À la mémoire de

USDA-ARS?s Scientific Manuscript database

Richard (Dick) Stace-Smith (1924 - 2017) was born in Creston, British Columbia. He received his B.Sc. degree in Agriculture from University of British Columbia in 1950 and Ph.D. from Oregon State University in 1954. Dick worked at the Agriculture Canada, later renamed Agriculture and Agri-Food Canad...

Testing Timescales for Rhythms Recorded in the 2.5 Ga Banded Iron Formation of the Dales Gorge Member (Brockman Iron Formation, Hamersley Group, Australia)

NASA Astrophysics Data System (ADS)

Hinnov, L. A.; de Oliveira Carvalho Rodrigues, P.; Franco, D.

2017-12-01

The classic, Superior-type banded iron formation (BIF) of the Precambrian Dales Gorge Member (DGM) of the Brockman Iron Formation, Hamersley Basin, Western Australia consists of a succession of micro- (millimeter-scale) and meso- (centimeter to decimeter-scale) bands of primarily iron-silica chemical sediment alternations, separated into macro- (meter to decameter-scale) bands by shales (1). Here, we present a time-frequency analysis of a gray-scale scan of the DGM "type section core" Hole 47A with small contributions from Hole EC10 (1) to provide a comprehensive characterization of banding patterns and periodicity throughout the 140 m section. SHRIMP zircon ages (2) indicate that the DGM was deposited over approximately 30 myr during the Archean-Proterozoic transition just prior to the Great Oxidation Event. This suggests that the banding patterns recorded Milankovitch cycles, although with orbital-rotational parameters significantly different from present-day due to Earth's tidal dissipation and chaotic episodes in the Solar System since 2.5 Ga. Banding patterns change systematically within the formation in response to slowly varying environmental conditions, which have been interpreted previously to be related to sea level change and basin evolution (3). Researchers, including (2), have questioned the 30 myr duration, suggesting instead that the micro-bands may be annual in scale. This would indicate a much shorter duration of less than 150 kyr for the DGM. In an attempt to determine whether Milankovitch cycles could have generated the meso-band patterns, we present detailed studies of BIF0 and BIF12, which typify the marked changes in meso-banding along the section. Objective procedures are also applied, including ASM (4) and TIMEOPT (5) to test for a range of potential alternative timescales assuming orbital-rotational parameter values modeled for 2.5 Ga. References: (1) Trendall, A.K., Blockley, J.G., GSWA Ann. Rep. 1967, 48, 1968; (2) Trendall, A.K., et al

Using Formative Assessment to Facilitate Learner Self-Regulation: A Case Study of Assessment Practices and Student Perceptions in Hong Kong

ERIC Educational Resources Information Center

Jing Jing, Ma

2017-01-01

One of the key aims of formative assessment in higher education is to enable students to become self-regulated learners (Nicol & Macfarlane-Dick, 2006). Based on Nicol and Macfarlane-Dick's (2006) framework, this exploratory study investigates which formative assessment practices proposed by them were used by one college EFL writing teacher to…

KSC-05pd2557

NASA Image and Video Library

2005-12-02

KENNEDY SPACE CENTER, FLA. - Official portrait of Shana L. Dale, deputy administrator of the National Aeronautics and Space Administration. As deputy administrator, Dale serves as the agency’s second in command and oversees the day-to-day work of NASA’s functional offices, such as the Office of the Chief Financial Officer, Office of General Counsel and Strategic Communications. Photo credit: NASA/Bill Ingalls

Human Factors in Industrial and Consumer Products and Services

DTIC Science & Technology

2006-03-24

modeling; simulation and intelligent agents; Transportation ; Space and aviation; Telecommunication and web applications; Consumer products; and Customer...the user feedback throughout the product development. Self-explaining and forgiving roads to improve safety Karel Brookhuis, Dick de Waard...in a simulated ambulance dispatcher’s task Ben Mulder, Anje Kruizinga & Dick de Waard University of Groningen, Experimental and Work Psychology

Munitions Executive Summit 2010 Held in San Diego, California on February 8-10, 2010

DTIC Science & Technology

2010-02-10

INDUSTRIAL CAPABILITIES · Mr. Dick Hammett , President, Winchester Ammunition AMMUNITION ENTERPRISE CROSS SERVICE PANEL PANEL CHAIR: BG Jonathan...complacency 7 Aligning Commercial Industrial Capabilities with Munitions Requirements & Resources Dick Hammett , President, Winchester Ammunition...Immature – Quantum Dot FPAs maturing – Devices have been demonstrated under less than optimal conditions – Measured results equate to less than 0.1

DESIGN OF MEDICAL RADIOMETER FRONT-END FOR IMPROVED PERFORMANCE

PubMed Central

Klemetsen, Ø.; Birkelund, Y.; Jacobsen, S. K.; Maccarini, P. F.; Stauffer, P. R.

2011-01-01

We have investigated the possibility of building a singleband Dicke radiometer that is inexpensive, small-sized, stable, highly sensitive, and which consists of readily available microwave components. The selected frequency band is at 3.25–3.75 GHz which provides a reasonable compromise between spatial resolution (antenna size) and sensing depth for radiometry applications in lossy tissue. Foreseen applications of the instrument are non-invasive temperature monitoring for breast cancer detection and temperature monitoring during heating. We have found off-the-shelf microwave components that are sufficiently small (< 5 mm × 5 mm) and which offer satisfactory overall sensitivity. Two different Dicke radiometers have been realized: one is a conventional design with the Dicke switch at the front-end to select either the antenna or noise reference channels for amplification. The second design places a matched pair of low noise amplifiers in front of the Dicke switch to reduce system noise figure. Numerical simulations were performed to test the design concepts before building prototype PCB front-end layouts of the radiometer. Both designs provide an overall power gain of approximately 50 dB over a 500 MHz bandwidth centered at 3.5 GHz. No stability problems were observed despite using triple-cascaded amplifier configurations to boost the thermal signals. The prototypes were tested for sensitivity after calibration in two different water baths. Experiments showed superior sensitivity (36% higher) when implementing the low noise amplifier before the Dicke switch (close to the antenna) compared to the other design with the Dicke switch in front. Radiometer performance was also tested in a multilayered phantom during alternating heating and radiometric reading. Empirical tests showed that for the configuration with Dicke switch first, the switch had to be locked in the reference position during application of microwave heating to avoid damage to the active components

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bishofberger, Kip A.

Within Building 19 of TA-53, a screen room has been evaluated for use as a reverb chamber (with deep gratitude to Dale Dalmas and Greg Dale for their assistance). With minimal additional sealing of the chamber, we expect the Q to increase even more, and thus field levels for the same RF source power. Future studies need to determine leakage field levels, which will define maximum achievable field levels.

Semantic Interpretation of An Artificial Neural Network

DTIC Science & Technology

1995-12-01

ARTIFICIAL NEURAL NETWORK .7,’ THESIS Stanley Dale Kinderknecht Captain, USAF 770 DEAT7ET77,’H IR O C 7... ARTIFICIAL NEURAL NETWORK THESIS Stanley Dale Kinderknecht Captain, USAF AFIT/GCS/ENG/95D-07 Approved for public release; distribution unlimited The views...Government. AFIT/GCS/ENG/95D-07 SEMANTIC INTERPRETATION OF AN ARTIFICIAL NEURAL NETWORK THESIS Presented to the Faculty of the School of Engineering of

Query 3; A Data Base Inquiry System Description and User’s Tutorials.

DTIC Science & Technology

1980-03-01

since Query 3 exists on the ARPANET. These references include: Defense Communications Agency Report NIC 45601, ARPANET Resource Handbook, October 1978...34 T"abular ok:m dIR " biddle dale england fox gridley halsey harry e. yarnell horne josephus daniels jouett leahy reeves richmond k. turner sterett...the terminal, "dwight d. eise... nimitz ainsworth fox reeves valdez dale biddle miller pharris richard e. byrd texas conygham semmes goldsborouqh query

Biofuels: thinking clearly about the issues.

PubMed

Dale, Bruce

2008-06-11

Dr. Bruce Dale is the recipient of the 2007 Sterling B. Hendricks Memorial Lectureship Award. This perspective is based on a lecture given by Dr. Dale at the Life Sciences and Society Symposium at the University of Missouri on March 14, 2007, and the Award Address he presented for the Sterling B. Hendricks Memorial Lectureship Award at the 234th National Meeting of the American Chemical Society, in Boston, MA, on August 20, 2007.

Control of High-Speed Flows Using Helium Injection

DTIC Science & Technology

2005-01-21

Gordeyev et al. 2003). The original instrument was described by Malley et al. (1992), and has been developed further by Jumper at Notre Dame (Hugo & Jumper ...n, described by the Gladstone-Dale relation ( Jumper and Fitzgerald, 2001), n = 1 + pKGD where KOD is the Gladstone-Dale ’constant’ which depends on...aberrations ( Jumper and Fitzgerald, 2001). According to the large-aperture approximation, an estimate for the time-averaged SR for a given optical phase

A Determination of the Rate of Change of G

DTIC Science & Technology

1975-02-01

the gravitational constant; to Professor Sir Fred Hoyle and Mr Leslie Morrison, whose papers showed how gravitational acceleration could be...The observed rate is also consistent with the Dirac and the Hoyle - Narlikar cosmological theories, and to a lesser degree, with the Brans-Dicke...the expansion. Indeed, at least three currently plausible cosmological theories, Brans-Dicke (1961), Hoyle -Narlikar (1972), and Dirac (1973), demand

40 CFR Appendix A to Part 97 - Final Section 126 Rule: EGU Allocations, 2004-2007

Code of Federal Regulations, 2010 CFR

2010-07-01

... W H WEATHERSPOON 2716 CT-2 3 NC W H WEATHERSPOON 2716 CT-3 2 NC W H WEATHERSPOON 2716 CT-4 4 NJ B L... KY COOPER 1384 1 183 KY COOPER 1384 2 367 KY DALE 1385 3 161 KY DALE 1385 4 158 KY E W BROWN 1355 1 193 KY E W BROWN 1355 10 37 KY E W BROWN 1355 2 317 KY E W BROWN 1355 3 863 KY E W BROWN 1355 8 34 KY...

United States Air Force Geophysics Scholar Program, 1982-1983.

DTIC Science & Technology

1984-03-01

Surveyor," Federal Geodetic Control Committee: FrCCIS-83-2, Rockville, Maryland. 2-13 Hothem, L.D., T. Vincenty and D.B. Hoyle , "Analyses of Doppler...to thank Fred Dale for his technical support and John Paulson for many helpful discussions. 9-3 I. Objectives Negative ion-molecule reactions play an...O’Malley, Phys. Rev. 150, 14 (1966). port of Fred Dale. This work has been supported in 2 L. Dub& and A. Herzenberg, Phys. Rev. Lett. 38, 820 (1977). part

DRUGDOG 3.0: U.S. Navy Random Urinalysis Software Package

DTIC Science & Technology

1994-03-15

NAVAL PO11GRADUATE SCHOOL Monterey, California AD-A281 748 THESIS LJuEoTE DRUGDOG 3.0: U. S . NAVY RANDOM URINALYSIS SOFTWARE PACKAGE by (% Dale E...ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED 15 MAR 94 Master’s Thesis 4. TITLE AND SUBTITLE DRUGDOG 3.0: U. S . NAVY RANDOM 5...FUNDING NUMBERS URINALYSIS SOFTWARE PACKAGE 6. AUTHOR( S ) Dale E. Wilson 7. PERFORMING ORGANIZATION NAME( S ) AND ADDRESS(ES) 8. PERFORMING Naval

DOE Office of Scientific and Technical Information (OSTI.GOV)

J. Blair Briggs; Robert W. Schaefer

Richard D. McKnight passed away on 28 August 2013. Dick was known to most for his technical excellence; leadership; and kind, thoughtful demeanor. The authors have attempted to capture, in a few short pages, elements of each of those qualities that defined Dick McKnight. The authors will then conclude with some personal memories of a man they looked to as a dear colleague, mentor, and friend.

The history of ergot of rye (Claviceps purpurea) II: 1900-1940.

PubMed

Lee, M R

2009-12-01

Ergot, in 1900, was a 'chemical mess'. Henry Wellcome, the pharmaceutical manufacturer, invited Henry Hallett Dale, a physiologist, to join his research department and solve this problem. Dale, in turn, recruited an outstanding group of scientists, including George Barger, Arthur Ewins and Harold Dudley, who would make distinguished contributions not only to the chemistry of ergot but also to the identification of acetylcholine, histamine and tyramine and to studies on their physiological effects. Initially Barger and Dale isolated the compound ergotoxine, but this proved to be a false lead; it was later shown to be a mixture of three different ergot alkaloids. The major success of the Wellcome group was the discovery and isolation of ergometrine, which would prove to be life-saving in postpartum haemorrhage. In 1917 Arthur Stoll and his colleagues started work on ergot at Sandoz Pharmaceuticals in Basel. A series of important results emerged over the next 30 years, including the isolation of ergotamine in 1918, an effective treatment for migraine with aura.

KSC-08pd0978

NASA Image and Video Library

2008-04-18

CAPE CANAVERAL, Fla. -- NASA Deputy Administrator Shana Dale (at the podium) gives the keynote address during a Future Forum in Miami. The forum, which focused on how space exploration benefits Florida's economy, was held at the University of Miami's BankUnited Center and included presentations and panels. Among those participating were NASA Deputy Administrator Shana Dale, astronaut Carl Walz, director of the Advanced Capabilities Division in NASA's Exploration Systems Mission Directorate, and Russell Romanella, director, International Space Station and Spacecraft Processing. Photo credit: NASA/Kim Shiflett

KSC-08pd0977

NASA Image and Video Library

2008-04-18

CAPE CANAVERAL, Fla. -- NASA Deputy Administrator Shana Dale (at the podium) gives the keynote address during a Future Forum in Miami. The forum, which focused on how space exploration benefits Florida's economy, was held at the University of Miami's BankUnited Center and included presentations and panels. Among those participating were NASA Deputy Administrator Shana Dale, astronaut Carl Walz, director of the Advanced Capabilities Division in NASA's Exploration Systems Mission Directorate, and Russell Romanella, director, International Space Station and Spacecraft Processing. Photo credit: NASA/Kim Shiflett

A High Performance Frequency Standard and Distribution System for Cassini Ka-Band Experiment

DTIC Science & Technology

2005-08-01

Orthogonal Polarization In Anisotropic Dielectric Resonators”, Proceedings of the 2002 IEEE International Frequency Control Symposium , pp. 553-558...2002. [9] G. J. Dick, Rabi T. Wang, Robert Tjoelker, “Design and Progress Report for Compact Cryocooled Sapphire Oscillator "VCSO"”, Proc. 2005 Joint...IEEE FCS/ PTTI. [10] R. Basu, G. J. Dick, Rabi T. Wang,” Novel Design of an All- Cryogenic RF Pound Circuit “,Proc. 2005 Joint IEEE FCS/ PTTI

The Isotope Geochemistry of Abyssal Peridotites and Related Rocks

DTIC Science & Technology

1993-06-01

object of several cruises, including a combined geophysics and petrology cruise (R/V Robert Conrad 27-09: Dick, et al., 1991) and an ocean drilling ...al. (1991) Proceed- ings of the Ocean Drilling Program, Scientific Results Vol. 118. Snow, J., Hart, S.R. and Dick, H.J.B. (1991) "Os isotopic...the geology, petrology , and geochemistry of mantle rocks, as well as their physical and acoustic properties. The first indications that the oceanic

Obituary: Richard D. Schwartz (1941-2011)

NASA Astrophysics Data System (ADS)

Wilking, Bruce

2011-12-01

Richard D. Schwartz, Professor Emeritus of Astronomy, died at his home in Sequim, WA, after a nearly 3 year battle against pancreatic cancer. Richard was born in Pretty Prairie, Kansas. He was active in sports and band and graduated in 1959. After completing a BS at Kansas State, and a Master's degree in Divinity at Union Seminary in NY, he further studied astrophysics, receiving his doctorate from University of Washington in 1973. When Dick arrived at the University of Missouri-St. Louis in 1975, he was the only astronomer in the Department of Physics. He built the astronomy program and initiated the B.S. in physics with an astrophysics option that the majority of physics majors choose. Dick was a wonderful teacher and provided outstanding leadership to the campus. He designed and provided oversight on the construction of the campus observatory that was completed in 1981. Since that time the observatory has served as both a teaching and research facility. It is also used for monthly public open houses that draw hundreds of people annually to the campus to view the moon, stars, and planets. Upon his retirement in 2003, the Board of Curators approved naming the campus observatory the "Richard D. Schwartz Observatory" in honor of his distinctive service to the University of Missouri-St. Louis. Just as important as Dick's service to promote public interest in astronomy was his effort to make the campus observatory a research facility. Dick equipped and maintained the observatory with state-of-art detectors that allowed students to get their first taste of scientific research. From 1991-2003, he managed the campus program for the NASA/Missouri Space Grant Consortium and mentored over 30 research students in projects at the observatory. Some of the results have been published in astronomical journals. Many of those students went on to graduate schools and several have achieved tenure and distinction at major universities. In addition to Dick's service to the University

Forest Microclimate Characteristics Review

DTIC Science & Technology

2014-09-01

Co ns tr uc tio n En gi ne er in g R es ea rc h La bo ra to ry Rosemary Keane, Hannah Pitstick, Patrick J . Guertin, and Dick L. Gebhart...Annotated Bibliography Rosemary Keane, Hannah Pitstick, Patrick J . Guertin, and Dick L. Gebhart Construction Engineering Research Laboratory U.S. Army...alphabetical order by last name of the study’s first author. Anno - tations for these references are presented in Chapter 4. Hyperlinked page numbers and

Arrays of Individually Controlled Ions Suitable for Two-Dimensional Quantum Simulations (Open Access, Publisher’s Version)

DTIC Science & Technology

2016-06-13

motional ground state, the ratio of Rabi frequencies of carrier and sideband couplings is given by the Lamb-Dicke parameter48, which is for u1 and Dkx...carrier Rabi - frequencies determine Lamb-Dicke parameters and allow for finding the orientation of modes. We use a single ion near T0 to determine the...and find corresponding coefficient settings where we obtain a maximal Rabi rate of the detection transition and/or minimal Rabi rates of micromotion

The theoretical tools of experimental gravitation

NASA Technical Reports Server (NTRS)

Will, C. M.

1972-01-01

Theoretical frameworks for testing relativistic gravity are presented in terms of a system for analyzing theories of gravity invented as alternatives to Einstein. The parametrized post-Newtonian (PPN) formalism, based on the Dicke framework and the Eotvos-Dicke-Braginsky experiment, is discussed in detail. The metric theories of gravity, and their post-Newtonian limits are reviewed, and PPN equations of motion are derived. These equations are used to analyze specific effects and experimental tests in the solar system.

Assessment of TRAC-PF1/MOD1 version 14. 3 using separate effects critical flow and blowdown experiments

DOE Office of Scientific and Technical Information (OSTI.GOV)

Spindler, B.; Pellissier, M.

1990-01-01

Independent assessment of the TRAC code was conducted at the Centre d'Etudes Nucleaires de Grenoble of the Commissariate a l'Energie Atomique (France) in the frame of the ICAP. This report presents the results of the assessment of TRAC-PF1/MOD1 version 14.3 using critical flow steady state tests (MOBY-DICK, SUPER-MOBY-DICK), and blowdown tests (CANON, SUPER-CANON, VERTICAL-CANON, MARVIKEN, OMEGA-TUBE, OMEGA-BUNDLE). This document, Volume 1, presents the text and tables from this assessment.

Geochemical survey of the Devil's Den Roadless Area, Rutland and Windsor counties, Vermont

USGS Publications Warehouse

Slack, J.F.; Atelsek, P.J.; Grosz, A.E.

1985-01-01

The Devils Den area is named for a large undercut cliff (Dale, 1915, p. 21) developed in Precambrian basement rocks. This undercut cliff forms a broad natural cave immediately west of and below Forest Service Road 10, at the head of Mt. Tabor Brook. Another much smaller cave is present in dolomite of probable Paleozoic (Early Cambrian) age on the east side of the same road. This smaller cave apparently is of artificial origin, having been made during early mining of the dolomite (Dale, 1915, p. 21). This man-made cave is the only evidence of previous mining activity within the study area.

Assessment of TRAC-PF1/MOD1 Version 14. 3 using separate effects critical flow and blowdown experiments

DOE Office of Scientific and Technical Information (OSTI.GOV)

Spindler, B.; Pellissier, M.

1990-01-01

Independent assessment of the TRAC code was conducted at the Centre d'Etudes Nucleaires de Grenoble of the Commissariate a l'Energie Atomique (France) in the frame of the ICAP. This report presents the results of the assessment of TRAC-PF1/MOD1 version 14.3 using critical flow steady state tests (MOBY-DICK, SUPER-MOBY-DICK), and blowdown tests (CANON, SUPER-CANON, VERTICAL-CANON, MARVIKEN, OMEGA-TUBE, OMEGA-BUNDLE). This document, Volume 2, presents the experimental data and figures from the assessment.

Generation of density perturbations by inflation in scalar-tensor gravity theories

NASA Astrophysics Data System (ADS)

Seshadri, T. R.

1992-02-01

Density perturbations arising out of the quantum fluctuations in a Brans-Dicke field in the context of extended inflation have been studied. We have used a model in which the Brans-Dicke parameter varies with time. We find that the density perturbations are large in magnitude and have a scale invariant spectrum. The origin of these is discussed and it is shown that these place further constraints on the model. Address after 15 Octobr 1991: Department of Physics and Astrophysics, University of Delhi 110 007, India.

Weak decay of hypernuclei

DOE Office of Scientific and Technical Information (OSTI.GOV)

Grace, R.

1983-01-01

The Moby Dick spectrometer (at BNL) in coincidence with a range spectrometer and a TOF neutron detector will be used to study the weak decay modes of /sup 12/C. The Moby Dick spectrometer will be used to reconstruct and tag events in which specific hypernuclear states are formed in the reaction K/sup -/ + /sup 12/C ..-->.. ..pi../sup -/ + /sup 12/C. Subsequent emission of decay products (pions, protons and neutrons) in coincidence with the fast forward pion will be detected in a time and range spectrometer, and a neutron detector.

Equivalence of Einstein and Jordan frames in quantized anisotropic cosmological models

NASA Astrophysics Data System (ADS)

Pandey, Sachin; Pal, Sridip; Banerjee, Narayan

2018-06-01

The present work shows that the mathematical equivalence of the Jordan frame and its conformally transformed version, the Einstein frame, so as far as Brans-Dicke theory is concerned, survives a quantization of cosmological models, arising as solutions to the Brans-Dicke theory. We work with the Wheeler-deWitt quantization scheme and take up quite a few anisotropic cosmological models as examples. We effectively show that the transformation from the Jordan to the Einstein frame is a canonical one and hence two frames furnish equivalent description of same physical scenario.

Acoustic-optic spectrometer. 1: Noise contributions and system consideration

NASA Technical Reports Server (NTRS)

Chin, G.

1984-01-01

An acousto-optic spectrometer (AOS) used as an IF spectrometer to a heterodyne receiver is modeled as a total power multi-channel integrating receiver. Systematic noise contributions common to all total power, time integrating receivers, as well as noise terms unique to the use of optical elements and photo-detectors in an AOS are identified and discussed. In addition, degradation of signal-to-noise ratio of an unbalanced Dicke receiver compared to a balanced Dicke receiver is found to be due to gain calibration processing and is not an instrumental effect.

Computerized Scheimpflug densitometry as a measure of corneal optical density after excimer laser refractive surgery in myopic eyes.

PubMed

Cennamo, Gilda; Forte, Raimondo; Aufiero, Bernardino; La Rana, Agostino

2011-08-01

To evaluate changes in anterior corneal optical density and the refractive index after photorefractive keratectomy (PRK) using a rotating Scheimpflug system. Department of Ophthalmology, University Federico II, Naples, Italy. Comparative case series. Anterior corneal optical density was evaluated with a rotating Scheimpflug system at baseline and 3 months and 12 months after PRK in eyes with a refractive error between -6.00 diopters (D) and -12.00 D (study group). A control group of unoperated eyes with the same refraction range was used to calculate corneal optical density and the Gladstone-Dale constant in unoperated eyes using the Gladstone-Dale formula. In the study group, changes in the anterior corneal optical density were evaluated over time and variations in the anterior corneal refractive index were obtained using the Gladstone-Dale constant. The study group comprised 37 eyes and the control group, 200 eyes. In the study group, the mean anterior corneal optical density and refractive index, respectively, were 27.71 ± 4.39 and 1.360 ± 0.05 at baseline, 37.812 ± 12.31 and 1.491 ± 0.16 after 3 months (P<.001 compared with baseline), and 26.29 ± 4.93 and 1.341 ± 0.06 after 12 months (P=.03 compared with baseline). The mean corneal optical density in the control group was 27.71 ± 4.31 (SD), and the resultant Gladstone-Dale constant was 0.013. An early increase and a subsequent reduction in anterior corneal optical density and the refractive index were present in myopic eyes during 1 year after PRK. Copyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

[The neurotransmision from the other side].

PubMed

Sánchez García, Pedro

2010-01-01

The discovery of how neurons communicate, like the cracking of genetic code and the creation of the atomic bomb is one of the fundamental scientific development of the twentieth century. In this paper we described the history of scientific discovery of neurohumoral transmission against the backdrop of the two torld and the fascinating lives of several scientists whose work was affected by the social and political events in their time. The lives and history of the main protagonists Sir Henry Dale, Otto Loewi and Walter Cannon are reported here. Otto Lewi and William Felberg--as jews--were arrested by nazi troops and Otto Krayer--not a jew--for not accepting one universitary offer of nazu party. All of them, and many others, were compelled to migrate from Germany to Great Britain, where Sir Henry Dale helped them to continue their work and their lives. All this scientist played an important role in the work on chemical neurotransmission which finally cristalized in awarding the Nobel. Price--in 1936--to Otto Loewi and Sir Henry Dale, but not to Walter Cannon, in this case, for adopting a controversial theory. The role of Rockefeller Foundation in this history is also comtemplated.

KSC-08pd0975

NASA Image and Video Library

2008-04-18

CAPE CANAVERAL, Fla. -- NASA Deputy Administrator Shana Dale (left) presents a 50th anniversary commemorative plaque to Wayne Carter during a Future Forum in Miami that focused on how space exploration benefits Florida's economy. Carter is assistant director for constituent services for the Miami-Dade County Mayor, Carlos Alveraz. The event, which included presentations and panels, was held at the University of Miami's BankUnited Center. Among those participating were NASA Deputy Administrator Shana Dale, astronaut Carl Walz, director of the Advanced Capabilities Division in NASA's Exploration Systems Mission Directorate, and Russell Romanella, director, International Space Station and Spacecraft Processing. Photo credit: NASA/Kim Shiflett

KSC-08pd0984

NASA Image and Video Library

2008-04-18

CAPE CANAVERAL, Fla. -- At the luncheon held during NASA’s Future Forum in Miami, NASA’s Deputy Administrator Shana Dale presents Florida Gov. Charlie Crist (on the right). At center is Donna E. Shalala, president of the University of Miami. The forum focused on how space exploration benefits Florida's economy. The event, which included presentations and panels, was held at the University of Miami's BankUnited Center. Among those participating were NASA Deputy Administrator Shana Dale, astronaut Carl Walz, director of the Advanced Capabilities Division in NASA's Exploration Systems Mission Directorate, and Russell Romanella, director, International Space Station and Spacecraft Processing. Photo credit: NASA/Kim Shiflett

Origin of density fluctuations in extended inflation

NASA Technical Reports Server (NTRS)

Kolb, Edward W.; Salopek, David S.; Turner, Michael S.

1990-01-01

The density fluctuations (both curvature and isocurvature) that arise due to quantum fluctuations in a simple model of extended inflation based upon the Jordan-Brans-Dicke theory are calculated. Curvature fluctuations arise due to quantum fluctuations in the Brans-Dicke field, in general have a nonscale-invariant spectrum, and can have an amplitude that is cosmologically acceptable and interesting without having to tune any coupling constant to a very small value. The density perturbations that arise due to the inflation field are subdominant. If there are other massless fields in the theory, e.g., an axion or an ilion, then isocurvature fluctuations arise in these fields too. Production of gravitational waves and the massless particles associated with excitations of the Brans-Dicke field are also discussed. Several attempts at more realistic models of extended inflation are also analyzed. The importance of the Einstein conformal frame in calculating curvature fluctuations is emphasized. When viewed in this frame, extended inflation closely resembles slow-rollover inflation with an exponential potential and the usual formula for the amplitude of curvature perturbations applies.

Recent theoretical advances on superradiant phase transitions

NASA Astrophysics Data System (ADS)

Baksic, Alexandre; Nataf, Pierre; Ciuti, Cristiano

2013-03-01

The Dicke model describing a single-mode boson field coupled to two-level systems is an important paradigm in quantum optics. In particular, the physics of ``superradiant phase transitions'' in the ultrastrong coupling regime is the subject of a vigorous research activity in both cavity and circuit QED. Recently, we explored the rich physics of two interesting generalizations of the Dicke model: (i) A model describing the coupling of a boson mode to two independent chains A and B of two-level systems, where chain A is coupled to one quadrature of the boson field and chain B to the orthogonal quadrature. This original model leads to a quantum phase transition with a double symmetry breaking and a fourfold ground state degeneracy. (ii) A generalized Dicke model with three-level systems including the diamagnetic term. In contrast to the case of two-level atoms for which no-go theorems exist, in the case of three-level system we prove that the Thomas-Reich-Kuhn sum rule does not always prevent a superradiant phase transition.

A NOTE ON THE UNIFIED FIRST LAW IN f(R) GRAVITY THEORY

NASA Astrophysics Data System (ADS)

Zhang, Yi; Gong, Yungui; Zhu, Zong-Hong

2012-04-01

Because of the dynamical equivalence between the f(R) gravity and the Brans-Dicke theory, the dynamical equation in the f(R) gravity is suggested to be derived from a view point of thermodynamics here. By a conformal transformation, the Brans-Dicke theory in the Jordan frame could be expressed as a minimal coupling scalar field theory in Einstein frame. Using the entropy-area relation d˜ {S} = d˜ {A}/4 G, the correct Friedmann equations could be gotten in both frames. Furthermore, we also discuss the corresponding generalized Misner-Sharp energies for theoretical consistence.

Effect of nonideal square-law detection on static calibration in noise-injection radiometers

NASA Technical Reports Server (NTRS)

Hearn, C. P.

1984-01-01

The effect of nonideal square-law detection on the static calibration for a class of Dicke radiometers is examined. It is shown that fourth-order curvature in the detection characteristic adds a nonlinear term to the linear calibration relationship normally ascribed to noise-injection, balanced Dicke radiometers. The minimum error, based on an optimum straight-line fit to the calibration curve, is derived in terms of the power series coefficients describing the input-output characteristics of the detector. These coefficients can be determined by simple measurements, and detection nonlinearity is, therefore, quantitatively related to radiometric measurement error.

Scalar-tensor theory of gravitation with negative coupling constant

NASA Technical Reports Server (NTRS)

Smalley, L. L.; Eby, P. B.

1976-01-01

The possibility of a Brans-Dicke scalar-tensor gravitation theory with a negative coupling constant is considered. The admissibility of a negative-coupling theory is investigated, and a simplified cosmological solution is obtained which allows a negative derivative of the gravitation constant. It is concluded that a Brans-Dicke theory with a negative coupling constant can be a viable alternative to general relativity and that a large negative value for the coupling constant seems to bring the original scalar-tensor theory into close agreement with perihelion-precession results in view of recent observations of small solar oblateness.

Legends Lecture Series III

NASA Image and Video Library

2011-07-27

Marina Benigno (far right) at Stennis Space Center, welcomes former administrative assistants and secretaries to the third Legends Lecture Series session. Lecture participants spoke about their work experiences with Stennis directors and deputy directors. Panel participants included Janet Austill (l to r), Mary Lou Matthews, Helen Paul, Wanda Howard, Ann Westendorf and Mary Gene Dick. Austill, Howard and Westendorf all worked with center directors during their Stennis careers. Dick, Matthews and Paul served with deputy directors at Stennis. The Legends Lecture Series is part of a yearlong celebration of the 50th anniversary of Stennis Space Center.

How Accurate Are Infrared Luminosities from Monochromatic Photometric Extrapolation?

NASA Astrophysics Data System (ADS)

Lin, Zesen; Fang, Guanwen; Kong, Xu

2016-12-01

Template-based extrapolations from only one photometric band can be a cost-effective method to estimate the total infrared (IR) luminosities ({L}{IR}) of galaxies. By utilizing multi-wavelength data that covers across 0.35-500 μm in GOODS-North and GOODS-South fields, we investigate the accuracy of this monochromatic extrapolated {L}{IR} based on three IR spectral energy distribution (SED) templates out to z˜ 3.5. We find that the Chary & Elbaz template provides the best estimate of {L}{IR} in Herschel/Photodetector Array Camera and Spectrometer (PACS) bands, while the Dale & Helou template performs best in Herschel/Spectral and Photometric Imaging Receiver (SPIRE) bands. To estimate {L}{IR}, we suggest that extrapolations from the available longest wavelength PACS band based on the Chary & Elbaz template can be a good estimator. Moreover, if the PACS measurement is unavailable, extrapolations from SPIRE observations but based on the Dale & Helou template can also provide a statistically unbiased estimate for galaxies at z≲ 2. The emission with a rest-frame 10-100 μm range of IR SED can be well described by all three templates, but only the Dale & Helou template shows a nearly unbiased estimate of the emission of the rest-frame submillimeter part.

2. VIEW NORTHEAST, NORTH FRONT OF QUARANTINE HEADHOUSE (BUILDING 30) ...

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

2. VIEW NORTHEAST, NORTH FRONT OF QUARANTINE HEADHOUSE (BUILDING 30) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

76 FR 20350 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-12

.... New Business Operating and Strategic Business Planning--Proposed Rule Farmer Mac Risk-Based Capital... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration...

Quantum state engineering in hybrid open quantum systems

NASA Astrophysics Data System (ADS)

Joshi, Chaitanya; Larson, Jonas; Spiller, Timothy P.

2016-04-01

We investigate a possibility to generate nonclassical states in light-matter coupled noisy quantum systems, namely, the anisotropic Rabi and Dicke models. In these hybrid quantum systems, a competing influence of coherent internal dynamics and environment-induced dissipation drives the system into nonequilibrium steady states (NESSs). Explicitly, for the anisotropic Rabi model, the steady state is given by an incoherent mixture of two states of opposite parities, but as each parity state displays light-matter entanglement, we also find that the full state is entangled. Furthermore, as a natural extension of the anisotropic Rabi model to an infinite spin subsystem, we next explored the NESS of the anisotropic Dicke model. The NESS of this linearized Dicke model is also an inseparable state of light and matter. With an aim to enrich the dynamics beyond the sustainable entanglement found for the NESS of these hybrid quantum systems, we also propose to combine an all-optical feedback strategy for quantum state protection and for establishing quantum control in these systems. Our present work further elucidates the relevance of such hybrid open quantum systems for potential applications in quantum architectures.

ARC-1969-A-25541

NASA Image and Video Library

1959-08-04

FLIGHT RESEARCH BRANCH PERSONNEL-1959. FRONT ROW: George Rathert, Stu Brown, Norm McFadden, Howard Turner, Gus Brunner, Venia McCloud, Violet Shaw, Kay Rizzi, Yvonne Settle, Genevieve Ziegler, Anita Palmer, Grace Carpenter, Evelyn Olson. SECOND ROW: Bill Triplett, Alan Faye, Dick Bray, Seth Anderson, Steve Belsley, Hervey Quigley, Hank Cole, Elwood Stewart, Don Higdon, Maurie White, Dorothea Wilkinson, Dick Vomaske, Stew Rolls, Mel Sadoff, Mary Thompson, Brent Creer. BACK ROW: Ron Gerdes, Joe Douvillier, John Stewart, Rod Wingrove, Walter McNeill. Note: Used in publication in Flight Research at Ames; 57 Years of Development and Validation of Aeronautical Technology NASA SP-1998-3300 fig 89

Phasing operator for two oscillators in classical field

NASA Technical Reports Server (NTRS)

Kim, Jong-Jean; Koo, Je-Hwan; Bae, Dong-Jae

1993-01-01

The origin of Dicke cooperative states was studied by considering two harmonic oscillators driven by a common field of radiation. The origin is assumed for superradiance in a system of molecules where no mutual interactions exist, but all of the molecules encounter the same field of radiation. A phasing operator as Phi(sub Nu) equals D(alpha) + P(sub Nu)D(alpha), where D(alpha) is the displacing operator and P(sub Nu) the projection operator for constant energy Nu for two oscillators, was derived. The eigenstates of the phasing operator Phi are found to show a finite correlation as in the Dicke cooperative states.

1. VIEW NORTHEAST, NORTH FRONT OF QUARANTINE HEADHOUSES (BUILDINGS 27, ...

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

1. VIEW NORTHEAST, NORTH FRONT OF QUARANTINE HEADHOUSES (BUILDINGS 27, 30) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

76 FR 59997 - Newspapers To Be Used by the Alaska Region for Publication of Legal Notices of Proposed Actions...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-28

... Register. ADDRESSES: Robin Dale, Alaska Region Group Leader for Appeals, Litigation and FOIA; Forest Service, Alaska Region; P.O. Box 21628; Juneau, Alaska 99802-1628. FOR FURTHER INFORMATION CONTACT: Robin...

77 FR 1066 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-09

... B. New Business System Audit Committee--Proposed Rule C. Reports Auditor's Report on FCA FY 2011...). Executive Meeting with Auditors Dated: January 5, 2012. Dale L. Aultman, Secretary, Farm Credit...

4. VIEW SOUTH/SOUTHEAST, NORTH FRONT OF QUARANTINE GREENHOUSE #1 (BUILDING ...

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

4. VIEW SOUTH/SOUTHEAST, NORTH FRONT OF QUARANTINE GREENHOUSE #1 (BUILDING 28) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

6. VIEW SOUTH/SOUTHEAST, NORTH FRONT OF QUARANTINE GREENHOUSE #3 (BUILDING ...

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

6. VIEW SOUTH/SOUTHEAST, NORTH FRONT OF QUARANTINE GREENHOUSE #3 (BUILDING 31) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

7. DETAIL, VENTILATION SYSTEM; EAST FRONT OF QUARANTINE GREENHOUSE #3 ...

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

7. DETAIL, VENTILATION SYSTEM; EAST FRONT OF QUARANTINE GREENHOUSE #3 (BUILDING 31) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

The spectral energy distributions of the entire Herschel Reference Survey

NASA Astrophysics Data System (ADS)

Ciesla, Laure

2012-08-01

We present the spectral energy distributions (SED) of the 323 galaxies of the Herschel Reference Survey. In order to provide templates for nearby galaxies calibrated on physical parameters, we computed mean SEDs per bin of morphological types and stellar masses. They will be very useful to study more distant galaxies and their evolution with redshift. This preliminary work aims to study how the most commonly used libraries (Chary & Elbaz 2001, Dale & Helou 2002 and Draine & Li 2007) reproduce the far-infrared emission of galaxies. First results show that they reproduce well the far-infrared part of mean SEDs. For single galaxies the Draine & Li (2007) models seem to reproduce very well the far-infrared emission, as does the Dale & Helou (2002).

3. VIEW NORTHEAST, SOUTH FRONT OF SOIL CONSERVATION SERVICE CLUSTER ...

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

3. VIEW NORTHEAST, SOUTH FRONT OF SOIL CONSERVATION SERVICE CLUSTER (BUILDING 25) - U.S. Plant Introduction Station, Soil Conservation Service Cluster, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

15. CLOSEUP VIEW OF SOUTHEAST CABLE BOLT, SUSPENSION CABLE, AND ...

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

15. CLOSE-UP VIEW OF SOUTHEAST CABLE BOLT, SUSPENSION CABLE, AND CONCRETE ANCHORING BLOCK, LOOKING SOUTHEAST - San Rafael Bridge, Spanning San Rafael River near Buckhorn Wash, Castle Dale, Emery County, UT

7. VIEW OF NORTHWEST PYLONS ON NORTH ABUTMENT, SUSPENSION CABLE ...

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

7. VIEW OF NORTHWEST PYLONS ON NORTH ABUTMENT, SUSPENSION CABLE AND 'U'-BOLT CONNECTIONS, LOOKING SOUTH - San Rafael Bridge, Spanning San Rafael River near Buckhorn Wash, Castle Dale, Emery County, UT

78 FR 940 - Sunshine Act Meetings; Farm Credit Administration Board

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-07

... the meeting are: Open Session Approval of Minutes December 13, 2012 Reports Auditor's Report on FCA FY...). Executive Meeting with Auditors Dated: January 2, 2013. Dale L. Aultman, Secretary, Farm Credit...

Dicke states in multiple quantum dots

NASA Astrophysics Data System (ADS)

Sitek, Anna; Manolescu, Andrei

2013-10-01

We present a theoretical study of the collective optical effects which can occur in groups of three and four quantum dots. We define conditions for stable subradiant (dark) states, rapidly decaying super-radiant states, and spontaneous trapping of excitation. Each quantum dot is treated like a two-level system. The quantum dots are, however, realistic, meaning that they may have different transition energies and dipole moments. The dots interact via a short-range coupling which allows excitation transfer across the dots, but conserves the total population of the system. We calculate the time evolution of single-exciton and biexciton states using the Lindblad equation. In the steady state the individual populations of each dot may have permanent oscillations with frequencies given by the energy separation between the subradiant eigenstates.

17. INTERIOR VIEW OF WEST TRUSS, SHOWING RAILING, SUSPENSION CABLE, ...

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

17. INTERIOR VIEW OF WEST TRUSS, SHOWING RAILING, SUSPENSION CABLE, CONNECTION BOLTS AND 'U'-COUPLINGS, LOOKING SOUTHWEST - San Rafael Bridge, Spanning San Rafael River near Buckhorn Wash, Castle Dale, Emery County, UT

77 FR 24709 - Farm Credit System Insurance Corporation Board; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-25

... Presentation of 2011 Audit Results by External Auditor Clifton Larson Allen LLP Executive Session Executive Session of the FCSIC Board Audit Committee with the External Auditor Dated: April 19, 2012. Dale L...

Boston Future Forum

NASA Image and Video Library

2008-09-17

NASA Deputy Administrator Shana Dale delivers a keynote address during the NASA Future Forum event at the Museum of Science in Boston, MA, Thursday, September 18, 2008. Photo Credit: (NASA/Bill Ingalls)

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Deputy Administrator Shana Dale testifies during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

2. VIEW SOUTHEAST, LEANTO GREENHOUSES OF MAIN HEADHOUSE (BUILDINGS 22. ...

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

2. VIEW SOUTHEAST, LEAN-TO GREENHOUSES OF MAIN HEADHOUSE (BUILDINGS 22. 23) - U.S. Plant Introduction Station, Main Headhouse & Lean-to Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

1. VIEW EAST, WEST FRONT OF SOIL CONSERVATION SERVICE CLUSTER ...

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

1. VIEW EAST, WEST FRONT OF SOIL CONSERVATION SERVICE CLUSTER (BUILDINGS 24, 25, 26) - U.S. Plant Introduction Station, Soil Conservation Service Cluster, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

ARC-2010-ACD10-0005-064

NASA Image and Video Library

2010-01-23

NASA Ames Research Center 70 Year Anniversary Gala Dinner held at Santa Clara University, Santa Clara, California with special guest speaker Nichelle Nichols of Star Trek fame. with Dale Compton and Meredith Moore

76 FR 38653 - Ocean Transportation Intermediary License; Revocation

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-01

...: 020538F. Name: Ord Ico, LLC dba Transgroup International. Address: 1400 Mittel Blvd., Suite A, Wood Dale...: 020544F. Name: Trans Ico, LLC dba Transgroup International. Address: 280 Wilson Avenue, Newark, NJ 07105...

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Deputy Administrator Shana Dale answers questions during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

78 FR 52903 - Notice of Petitions by Firms for Determination of Eligibility To Apply for Trade Adjustment...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-27

... valves. Innovative Rack & Gear Co. Inc...... 365 Balm Court, Wood Dale, 8/19/2013 The firm manufactures gears IL 60191. and gear racks to customer specifications. Any party having a substantial interest in...

3. VIEW NORTH, INTERIOR OF GREENHOUSE #1 (BUILDING 5), TAKEN ...

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

3. VIEW NORTH, INTERIOR OF GREENHOUSE #1 (BUILDING 5), TAKEN FROM SHED (BUILDING 20) - U.S. Plant Introduction Station, Greenhouse Nos. 1 & 2, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

3. VIEW EAST, NORTH AND WEST FRONT OF QUARANTINE GREENHOUSES ...

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

3. VIEW EAST, NORTH AND WEST FRONT OF QUARANTINE GREENHOUSES (BUILDINGS 26, 28, 29, 31) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

5. VIEW SOUTH/SOUTHEAST. NORTH FRONT OF QUARANTINE GREENHOUSES #2 AND ...

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

5. VIEW SOUTH/SOUTHEAST. NORTH FRONT OF QUARANTINE GREENHOUSES #2 AND #3 (BUILDINGS 29, 31) - U.S. Plant Introduction Station, Quarantine Headhouses & Greenhouses, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

"Miniature Aces" NASA's Dale Reed Flight Research Laboratory

NASA Image and Video Library

2015-02-23

This video uncovers the workings, tools, and rationale of the scaled aircraft lab at NASA’s Armstrong Flight Research Center on Edwards Air Force Base. Watch commercial-off-the-shelf aircraft, one-of-a-kind designs, powered aircraft, and gliders take-off, fly, and land. The chief pilot and designer of the lab explains how and why they do what they do.

Drama in the Dale: Transformation through Community Drama

ERIC Educational Resources Information Center

Ward, Julie; Mills, Helen Frances; Anderson, Alan

2013-01-01

During the winter of 2011-2012, Weardale, England, was the setting for an ambitious informal adult education project. In this rural area in the northeast part of the country, the local arts collective, Jack Drum Arts, established a community play project entitled "The Bonny Moorhen." This dramatic undertaking aimed to retell the story of…

Dale Long Emergency Medical Service Providers Protection Act

THOMAS, 111th Congress

Sen. Leahy, Patrick J. [D-VT

2009-06-25

Senate - 12/03/2009 Placed on Senate Legislative Calendar under General Orders. Calendar No. 220. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

'Drawing aside the curtain': natural childbirth on screen in 1950s Britain.

PubMed

Al-Gailani, Salim

2017-09-01

This article recovers the importance of film, and its relations to other media, in communicating the philosophies and methods of 'natural childbirth' in the post-war period. It focuses on an educational film made in South Africa around 1950 by controversial British physician Grantly Dick-Read, who had achieved international fame with bestselling books arguing that relaxation and education, not drugs, were the keys to freeing women from pain in childbirth. But he soon came to regard the 'vivid' medium of film as a more effective means of disseminating the 'truth of [his] mission' to audiences who might never have read his books. I reconstruct the history of a film that played a vital role in teaching Dick-Read's method to both the medical profession and the first generation of Western women to express their dissatisfaction with highly drugged, hospitalized maternity care. The article explains why advocates of natural childbirth such as Dick-Read became convinced of the value of film as a tool for recruiting supporters and discrediting rivals. Along the way, it offers insight into the British medical film industry and the challenges associated with producing, distributing and screening a depiction of birth considered unusually graphic for the time.

13. VIEW OF SUBSTRUCTURE CONNECTIONS WITH TRUSS MEMBERS, SUSPENSION CABLES ...

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

13. VIEW OF SUBSTRUCTURE CONNECTIONS WITH TRUSS MEMBERS, SUSPENSION CABLES AND 'I'-BEAMS, NORTHEAST SIDE OF BRIDGE, LOOKING WEST - San Rafael Bridge, Spanning San Rafael River near Buckhorn Wash, Castle Dale, Emery County, UT

6. VIEW EAST TOWARDS LOTTSFORD BRANCH, THE AMPHITHEATRELIKE PLANTING AREA ...

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

6. VIEW EAST TOWARDS LOTTSFORD BRANCH, THE AMPHITHEATRE-LIKE PLANTING AREA ON THE SOUTH SLOPE OF WATSON'S HILL - U.S. Plant Introduction Station, Landscape, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

75 FR 27616 - Qualification of Drivers; Exemption Applications; Diabetes Mellitus

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-17

... L. Brokaw, Chris D. Chambers, Charles A. Cinert, Sr., John D. Clark, IV, Dale J. Cleaver, James H..., Robert W. Prabucki, Edward R. Ramm, Wayne F. Richards, George H. Rollins, Jo Ellen Roshak, Gary G...

4. VIEW EAST, GREENHOUSE #2 (BUILDING 6) CONNECTED TO NORTH ...

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

4. VIEW EAST, GREENHOUSE #2 (BUILDING 6) CONNECTED TO NORTH FRONT OF PACKING SHED (BUILDING 20) - U.S. Plant Introduction Station, Greenhouse Nos. 1 & 2, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

51. LAUNCH CREW IN FRONT OF BARGE ON RAIL BUGGIES. ...

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

51. LAUNCH CREW IN FRONT OF BARGE ON RAIL BUGGIES. (LEFT OT RIGHT: DALE WILBURN, GENE EVERLY, TIM DOEPELHEUER, JACK ROBERTS, JAMES REARICK, STEVE RAKUSKIN) - Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsville, Fayette County, PA

Genetics Home Reference: harlequin ichthyosis

MedlinePlus

... Hepenstal PJ, Dale BA, Tadini G, Fleckman P, Stephens KG, Sybert VP, Mallory SB, North BV, Witt ... Bird TD, Ledbetter N, Mefford HC, Smith RJH, Stephens K, editors. GeneReviews® [Internet]. Seattle (WA): University of ...

77 FR 10606 - Qualification of Drivers; Exemption Applications; Vision

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-22

... comments on-line. Privacy Act: Anyone may search the electronic form of all comments received into any of... (TX), Dale M. Cannon (OR), Jamie French (NC), Wayne H. Holt (UT), Billy R. Jefferies (WV), Carlos A...

High-Power Collective Charging of a Solid-State Quantum Battery

NASA Astrophysics Data System (ADS)

Ferraro, Dario; Campisi, Michele; Andolina, Gian Marcello; Pellegrini, Vittorio; Polini, Marco

2018-03-01

Quantum information theorems state that it is possible to exploit collective quantum resources to greatly enhance the charging power of quantum batteries (QBs) made of many identical elementary units. We here present and solve a model of a QB that can be engineered in solid-state architectures. It consists of N two-level systems coupled to a single photonic mode in a cavity. We contrast this collective model ("Dicke QB"), whereby entanglement is genuinely created by the common photonic mode, to the one in which each two-level system is coupled to its own separate cavity mode ("Rabi QB"). By employing exact diagonalization, we demonstrate the emergence of a quantum advantage in the charging power of Dicke QBs, which scales like √{N } for N ≫1 .

Optimized parameter estimation in the presence of collective phase noise

NASA Astrophysics Data System (ADS)

Altenburg, Sanah; Wölk, Sabine; Tóth, Géza; Gühne, Otfried

2016-11-01

We investigate phase and frequency estimation with different measurement strategies under the effect of collective phase noise. First, we consider the standard linear estimation scheme and present an experimentally realizable optimization of the initial probe states by collective rotations. We identify the optimal rotation angle for different measurement times. Second, we show that subshot noise sensitivity—up to the Heisenberg limit—can be reached in presence of collective phase noise by using differential interferometry, where one part of the system is used to monitor the noise. For this, not only Greenberger-Horne-Zeilinger states but also symmetric Dicke states are suitable. We investigate the optimal splitting for a general symmetric Dicke state at both inputs and discuss possible experimental realizations of differential interferometry.

System implications of large radiometric array antennas

NASA Technical Reports Server (NTRS)

Levis, C. A.; Lin, H. C.

1976-01-01

Current radiometric earth and atmospheric sensing systems in the centimeter wavelength range generally employ a directive antenna connected through a single terminal pair to a Dicke receiver. It is shown that this approach does not lend itself to systems with greatly increased spatial resolution. Signal to noise considerations relating to antenna efficiency force the introduction of active elements at the subarray level; thus, if Dicke switching is to be used, it must be distributed throughout the system. Some possible approaches are suggested. The introduction of active elements at the subarray level is found to ease the design constraints on time delay elements, necessary for bandwidth, and on multiple beam generation, required in order to achieve sufficient integration time with high resolution.

2. VIEW SOUTHEAST, WEST FRONT OF BUILDINGS 25. 26; NORTH ...

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

2. VIEW SOUTHEAST, WEST FRONT OF BUILDINGS 25. 26; NORTH FRONT OF BUILDING 24: ROOF GABLE OF BUILDING 27 - U.S. Plant Introduction Station, Soil Conservation Service Cluster, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

American Academy of Forensic Sciences

MedlinePlus

... Academy News PDF Library Proceedings Journal of Forensic Sciences Information for Authors Searchable Index Contact Information Forensic Links ... Dale Stewart Award 2018 Annual Scientific Meeting Registration ... in Forensic Science … Now What? Young Forensic Scientists Forum (YFSF) Annual ...

3. VIEW EAST, INTERIOR OF UNNUMBERED SCREEN HEADHOUSE, WITH ENTRANCES ...

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

3. VIEW EAST, INTERIOR OF UNNUMBERED SCREEN HEADHOUSE, WITH ENTRANCES TO GREENHOUSES #3, #4, #5 (BUILDINGS 7, 8, 9) - U.S. Plant Introduction Station, Greenhouse Nos. 3-8, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

1. VIEW SOUTHWEST, EAST FRONT OF GREENHOUSE #1 (BUILDING 5), ...

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

1. VIEW SOUTHWEST, EAST FRONT OF GREENHOUSE #1 (BUILDING 5), WITH NORTH FRONT OF SHED (BUILDING 20) IN DISTANCE - U.S. Plant Introduction Station, Greenhouse Nos. 1 & 2, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

Conditioning of the Stable, Discrete-time Lyapunov Operator

NASA Technical Reports Server (NTRS)

Tippett, Michael K.; Cohn, Stephen E.; Todling, Ricardo; Marchesin, Dan

2000-01-01

The Schatten p-norm condition of the discrete-time Lyapunov operator L(sub A) defined on matrices P is identical with R(sup n X n) by L(sub A) P is identical with P - APA(sup T) is studied for stable matrices A is a member of R(sup n X n). Bounds are obtained for the norm of L(sub A) and its inverse that depend on the spectrum, singular values and radius of stability of A. Since the solution P of the the discrete-time algebraic Lyapunov equation (DALE) L(sub A)P = Q can be ill-conditioned only when either L(sub A) or Q is ill-conditioned, these bounds are useful in determining whether P admits a low-rank approximation, which is important in the numerical solution of the DALE for large n.

Index of refraction measurements and window corrections for PMMA under shock compression

NASA Astrophysics Data System (ADS)

Chapman, David James; Eakins, Daniel E.; Williamson, David Martin; Proud, William

2012-03-01

Symmetric plate impact experiments were performed to investigate the change in the refractive index of Polymethylmethacrylate (PMMA) under shock loading. Flyer and target geometries allowed the measurement of shock velocity, particle velocity, and refractive index in the shocked state, using a Het-V system (1550 nm). The change in refractive index of PMMA as a function of density is generally considered to be well described by the Gladstone-Dale relationship, meaning that the "apparent" velocity measured by a laser velocity interferometer is the "true" velocity, and hence there is no window correction. The results presented here demonstrate that the behaviour of PMMA deviates from an ideal Gladstone-Dale description, requiring a small velocity correction of order 1% at peak stresses up to 1.9 GPa. These results are consistent with literature values measured using a wavelength of 632.8 nm by [1].

GRC-2005-C-01372

NASA Image and Video Library

2001-10-06

WebCore Technologies, Fiber-reinforced Foam Core Composite Sandwich Panel during preparation for testing in the Ballistic Impact Lab. Pictured: Dale Hopkins, GRC and Mike Sheppard, Web Core Technologies Cross reference to camera file number: G6QJ0101

GRC-2005-C-01368

NASA Image and Video Library

2001-10-06

WebCore Technologies, Fiber-reinforced Foam Core Composite Sandwich Panel during preparation for testing in the Ballistic Impact Lab. Pictured: Dale Hopkins, GRC and Mike Sheppard, Web Core Technologies Cross reference to camera file number: G6QJ0086

1400323

NASA Image and Video Library

2014-05-02

DALE THOMAS, LEFT, MARSHALL AA FOR TECHNICAL WORK AND JAMES LACKEY, RIGHT, ACTING DIRECTOR FOR AMRDEC SIGNED AN AGREEMENT ON MAY 2, 2014 TO ENGAGE IN RESEARCH & DEVELOPMENT EFFORTS THAT ADVANCE THE STATE OF THE ART IN ADDITIVE MANUFACTURING

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin testifies as NASA Deputy Administrator Shana Dale looks on during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin, left, testifies as NASA Deputy Administrator Shana Dale looks during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

78 FR 22022 - Agency Information Collection Activities: Requests for Comments; Clearance of Renewed Approval of...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-12

... Aviation Administration to measure management objectives and analyze customer feedback for ISO-9001. DATES... Aviation System Standards Distribution Dissemination Quality Plan states that the organization shall... Quality Management System in relation to customer satisfaction. The Glenn Dale Distribution Center...

Summer Reading

NASA Astrophysics Data System (ADS)

Pagni, Dick; Frech, Cheryl; Coppola, Brian; Kovac, Jeffrey; Harris, Hal

2007-06-01

Summer, a great time for leisure reading, a great time to try something different! Dick Pagni, Cheryl Frech, Brian Coppola, Jeffrey Kovac, and Hal Harris provide plenty of suggestions to keep you reading!

4. VIEW NORTHWEST, NORTH FRONT OF SOIL CONSERVATION SERVICE CLUSTER ...

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

4. VIEW NORTHWEST, NORTH FRONT OF SOIL CONSERVATION SERVICE CLUSTER (BUILDINGS 24, 25, 26); NORTH FRONT OF QUARANTINE HEADHOUSE (BUILDING 27) - U.S. Plant Introduction Station, Soil Conservation Service Cluster, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

Comprehensive Development Program of Hunter-Killer Peptides for Prostate Cancer

DTIC Science & Technology

2004-05-01

sequence-pattern recognition approach identifies substance P as a potential apoptotic peptide Gabriel del Rio, Susana Castro-Obregon, Rammohan Rao, H... Daniel Rajotte*.**, Stanislaw Krajewski*, H. Michael Ellerby*St , Dale E. Bredesen*st , Renata Pasqualini*", and Erkki Ruoslahti*** *Cancer Research

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin, left, and NASA Deputy Administrator Shana Dale share a laugh during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin, left, testifies as NASA Deputy Administrator Shana Dale looks on during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin, left, and NASA Deputy Administrator Shana Dale testify in front of a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Deputy Administrator Shana Dale, right, speaks as NASA Administrator Michael Griffin looks on during a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

The Challenge of the 80's--Managing for Dual Results

ERIC Educational Resources Information Center

Miller,

1978-01-01

The contributions of the school business executive to produce both economic results and people results are dependent on recognition of the importance of people consciousness. The Dale Carnegie organization is an example of the awareness of personal needs. (Author/MLF)

What if a solar super-storm hit?

NASA Astrophysics Data System (ADS)

Dale, Ashley

2014-08-01

Super-storms on the surface of the Sun are more than just an interesting oddity of astrophysics. As Ashley Dale explains, they can occur at any time and - if sufficiently strong - could cripple our modern way of life here on Earth.

40 CFR 131.35 - Colville Confederated Tribes Indian Reservation.

Code of Federal Regulations, 2010 CFR

2010-07-01

... would be limited to the extent that bacterial infections of eyes, ears, respiratory, or digestive... Creek Class I Coyote Creek Class II Deerhorn Creek Class III Dick Creek Class III Dry Creek Class I...

Learning in the third dimension.

PubMed

Boyd, Sharon; Clarkson, Eoghan; Mather, Brian

2015-04-04

Sharon Boyd, Eoghan Clarkson and Brian Mather explain how the Royal (Dick) School of Veterinary Studies is using the latest 3D modelling techniques to help students develop their clinical skills. British Veterinary Association.

The shock Hugoniot of liquid hydrazine in the pressure range of 3.1 to 21.4 GPa

DOE Office of Scientific and Technical Information (OSTI.GOV)

Garcia, B.O.; Persson, P-A.

1996-10-01

Impedance matching was used; the technique was similar to Richard Dick`s. Shock pressures were produced using a plane wave explosive driver with different explosives and different reference materials against liq. hydrazine. Velocity of shock wave in the liquid and free surface velocity of the reference material were measured using different pin contact techniques. The experimental Hugoniot appears smooth, with no indication of a phase change. The shock Hugoniot of liq. hydrazine was compared against 3 other liquid Hugoniots (liq. NH3, water, CCl4) and is closest to that for water and in between NH3 and CCl4. The hydrazine Hugoniot was alsomore » compared to the ``Universal`` Hugoniot for liquids. This universal Hugoniot is not a good approximation for the liq. hydrazine in this pressure range.« less

Quintessence from virtual dark matter

NASA Astrophysics Data System (ADS)

Damdinsuren, Battsetseg; Sim, Jonghyun; Lee, Tae Hoon

2017-09-01

Considering a theory of Brans-Dicke gravity with general couplings of Higgs-like bosons including a non-renormalizable term, we derive the low-energy effective theory action in the Universe of a temperature much lower than the Higgs-like boson mass. Necessary equations containing gravitational field equations and an effective potential of the Brans-Dicke scalar field are obtained, which are induced through virtual interactions of the Higgs-like heavy field in the late-time Universe. We find a de Sitter cosmological solution with the inverse power law effective potential of the scalar field and discuss the possibility that the late-time acceleration of our Universe can be naturally explained by means of the solution. We also investigate stability properties of the quintessence model by using a linear approximation.

Single-Pole Double-Throw MMIC Switches for a Microwave Radiometer

NASA Technical Reports Server (NTRS)

Montes, Oliver; Dawson, Douglas E.; Kangaslahti, Pekka P.

2012-01-01

In order to reduce the effect of gain and noise instabilities in the RF chain of a microwave radiometer, a Dicke radiometer topology is often used, as in the case of the proposed surface water and ocean topography (SWOT) radiometer instrument. For this topology, a single-pole double-throw (SPDT) microwave switch is needed, which must have low insertion loss at the radiometer channel frequencies to minimize the overall receiver noise figure. Total power radiometers are limited in accuracy due to the continuous variation in gain of the receiver. High-frequency SPDT switches were developed in the form of monolithic microwave integrated circuits (MMICs) using 75 micron indium phosphide (InP) PIN-diode technology. These switches can be easily integrated into Dicke switched radiometers that utilize microstrip technology.

Some remarks on the genesis of scalar-tensor theories

NASA Astrophysics Data System (ADS)

Goenner, Hubert

2012-08-01

Between 1941 and 1962, scalar-tensor theories of gravitation were suggested four times by different scientists in four different countries. The earliest originator, the Swiss mathematician W. Scherrer, was virtually unknown until now whereas the chronologically latest pair gave their names to a multitude of publications on Brans-Dicke theory. P. Jordan, one of the pioneers of quantum mechanics and quantum field theory, and Y. Thiry, known by his book on celestial mechanics, a student of the mathematician Lichnerowicz, complete the quartet. Diverse motivations for and conceptual interpretations of their theories will be discussed as well as relations among them. Also, external factors like language, citation habits, or closeness to the mainstream are considered. It will become clear why Brans-Dicke theory, although structurally a déjà-vu, superseded all the other approaches.

Electrochemical evaluation of sweet sorghum fermentable sugar bioenergy feedstock

USDA-ARS?s Scientific Manuscript database

Redox active constituents of sorghum, e.g., anthocyanin, flavonoids, and aconitic acid, putatively contribute to its pest resistance. Electrochemical reactivity of sweet sorghum stem juice was evaluated using cyclic voltammetry (CV) for five male (Atlas, Chinese, Dale, Isidomba, N98) and three fema...

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

NASA Administrator Michael Griffin, left, and NASA Deputy Administrator Shana Dale talk prior to the start of a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

COLLECTION EFFICIENCY OF THE HIGH VOLUME SMALL SURFACE SAMPLER ON WORN CARPETS

EPA Science Inventory

Collection Efficiency of the High Volume Small Surface Sampler on Worn Carpets

Erik R. Svendsen*?, Peter S. Thorne*, Stephen J. Reynolds*?, Patrick T. O'Shaughnessy*, Alba Quinones*, Dale Zimmerman*, and Nervana Metwali*

*University of Iowa College of Public Health<...

An Evaluation of the Human Domain Concept: Organizing the Knowledge, Influence, and Activity in Population-Centric Warfare

DTIC Science & Technology

2015-05-21

104 John B. Hattendorf, B. Mitchell Simpson, and John R. Wadleigh, Sailors and Scholars: The Centennial History... Centennial History of the US Naval War College. New Port, RI: Naval War College Press, 1984. Hayden, Dale L. “Air-Mindedness.” Air & Space Power

4. VIEW NORTH, TURKISH FILBERT TREE AT THE CORNER OF ...

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

4. VIEW NORTH, TURKISH FILBERT TREE AT THE CORNER OF WHAT WAS ONCE THE NUT BLOCK AREA AT THE REAR OF THE ORIGINAL 50-ACRE PARCEL - U.S. Plant Introduction Station, Landscape, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

Summer Reading

NASA Astrophysics Data System (ADS)

Harris, Harold H.; Pagni, Richard M.; Kovac, Jeffrey; Coppola, Brian P.

2003-06-01

Summer, a great time for leisure reading! Try to set aside some time and find a quiet spot, because Hal Harris, Dick Pagni, Jeff Kovac, and Brian Coppola have a variety of interesting suggestions for you.

Summer Reading

NASA Astrophysics Data System (ADS)

Pagni, Richard M.; Baldwin Frech, Cheryl; Coppola, Brian P.; Harris, Harold H.; Kovac, Jeffrey

2005-06-01

Summer, a great time for leisure reading, a great time to try something different! Cheryl Baldwin Frech joins regulars Dick Pagni, Brian Coppola, Hal Harris, and Jeff Kovac in providing plenty of suggestions to tempt you.

J.G. Crowther's War: Institutional strife at the BBC and British Council.

PubMed

Jones, Allan

2016-06-01

Science writer, historian and administrator J.G. Crowther (1899-1983) had an uneasy relationship with the BBC during the 1920s and 1930s, and was regarded with suspicion by the British security services because of his left politics. Nevertheless the Second World War saw him working for 'establishment' institutions. He was closely associated with the BBC's Overseas Service and employed by the British Council's Science Committee. Both organizations found Crowther useful because of his wide, international knowledge of science and scientists. Crowther's political views, and his international aspirations for the British Council's Science Committee, increasingly embroiled him in an institutional conflict with the Royal Society and with its president, Sir Henry Dale, who was also chairman of the British Council's Science Committee. The conflict centred on the management of international scientific relations, a matter close Crowther's heart, and to Dale's. Dale considered that the formal conduct of international scientific relations was the Royal Society's business rather than the British Council's. Crowther disagreed, and eventually resigned from the British Council Science Committee in 1946. The article expands knowledge of Crowther by drawing on archival documents to elucidate a side of his career that is only lightly touched on in his memoirs. It shows that 'Crowther's war' was also an institutional war between the Science Committee of the British Council and the Royal Society. Crowther's unhappy experience of interference by the Royal Society plausibly accounts for a retreat from his pre-war view that institutional science should plan and manage BBC science broadcasts.

American Bald Eagle Restoration Plan for Dale Hollow Lake.

DTIC Science & Technology

1987-06-01

Wildlife Resources Agency’s (TWRA) Reelfoot Lake site, Tennessee Valley Authority’s (TVA), Land Between the Lakes operation in Kentucky, and the Alabama...three active hacking sites were visited: (1) Reelfoot Lake (Tennessee), (2) Land Between the Lakes (Kentucky), and (3) Mud Creek (Alabama). These...somewhat differently. Some of the differences are hereby noted: (1) Reelfoot Lake -- The towers here are constructed in lIve cypress trees at a height

Book Review: Caves and Karst of the Yorkshire Dales

NASA Astrophysics Data System (ADS)

Westaway, Rob

2015-10-01

The British Cave Research Association (BCRA) is the research division of the British Caving Association (BCA), itself the principal society in Britain for those interested in caving, with activities including provision of training and safety certification for cavers and managing access to caves. Although some UK cave-related research is carried out by academics, this tends to be restricted to archaeological investigations of caves that have served as human habitations, and to be focused more on the occupants than the caves themselves. In contrast, most cave exploration is undertaken as a leisure activity, under the auspices of clubs affiliated to the BCA/BCRA, this being indeed virtually the only field of Earth science where amateur investigators can continue to make significant discoveries. Many cave explorers are also affiliated with academic researchers, such as managers of dating laboratories; the synergy between these two groups is highly productive, having resulted for instance in the discovery and exploration in recent years of the vast Ogof Draenen cave system in South Wales, which probably dates back to the Early Pleistocene (e.g., Farrant et al., 2014).

SECOND FLOOR, VIEW OF THE NORTH PLAIN OF THE 1772 ...

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

SECOND FLOOR, VIEW OF THE NORTH PLAIN OF THE 1772 ROOF TO SHOW ROUND-BUTT WOOD SHINGLES; THIS ROOF IS PROTECTED BY THE 1784 SHED ADDITION - Murray-Dick-Fawcett House, 517 Prince Street, Alexandria, Independent City, VA

University Curricula in the Marine Sciences and Related Fields. Academic Years 1969-70 and 1970-71.

DTIC Science & Technology

1971-01-01

Associate Professor Krause , Dale C., Associate Professor 112 McMaster, Robert L., Ph.D., Associate Professor Smayda, Theodore J., Dr., Philos...Associate Professor of Zoology Division of Physical Sciences Allison, Edwin C., Ph.D., Professor of Geology Berger, Wolfgang , Ph.D., Assistant Professor of

76 FR 18549 - Casmalia Disposal Site; Notice of Proposed CERCLA Administrative De Minimis Settlement

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-04

... Inc. as successor in interest to the claims asserted against Western Electric Company, Inc. and AT&T Technologies, Inc; Avery Dennison Corporation; B/E Aerospace; BAE Systems Information and Electronic Systems... Kenworth, Inc.; Ken Dale; L-3 Communication Corporation; Life Technologies Corporation; Macy's Inc...

The Dawn of Learning: What's Working in Early Childhood Education. Hearing before the Subcommittee on Education Reform of the Committee on Education and the Workforce. House of Representatives, One Hundred Seventh Congress, First Session (July 31, 2001).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and the Workforce.

This document presents congressional testimony regarding effective early childhood education. Opening statements presented by Representatives Michael Castle and Dale Kildee focused on the need to examine the effectiveness of early childhood programs and address the "pre-achievement gap" between disadvantaged and advantaged preschoolers.…

78 FR 13883 - Federal Property Suitable as Facilities To Assist the Homeless

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-01

... Status: Excess Comments: 894 sf.; residential; 84+ mons. vacant; repairs needed; asbestos; w/in... Status: Excess Comments: 1,830 sf.; residential; 84+ mons. vacant; major repairs needed; asbestos Dale... Status: Excess Comments: 1,830 sf.; residential; 84+ mons. vacant; major repairs needed; asbestos; w/in...

76 FR 48161 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-08

.... New Business Capital Adequacy--Ratings-Based Approach--Advance Notice of Proposed Rulemaking C. Report... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration..., McLean, Virginia 22102-5090. SUPPLEMENTARY INFORMATION: Parts of this meeting of the Board will be open...

Boston Future Forum

NASA Image and Video Library

2008-09-17

Mayor of Cambridge, Massachusetts, E. Denise Simmons, left, holds a plaque presented to her by NASA Deputy Administrator Ms. Shana Dale during the NASA Future Forum event at the Museum of Science in Boston, MA, Thursday, September 18, 2008. Photo Credit: (NASA/Bill Ingalls)

Proceedings of the Annual Meeting of the Association for Education in Journalism and Mass Communication (85th, Miami, Florida, August 5-8, 2002). Newspaper Division.

ERIC Educational Resources Information Center

2002

The Newspaper Division of the proceedings contains the following 21 papers: "Exploring the Turnover Issue: Why Newspaper Reporters Intend to Quit Their Jobs" (Li-jing Arthur Chang); "Reporters, Robes, and Representative Government" (William Dale Harrison); "Above the Fold: The Implications of Micro-Preservation to the…

HRD and Small Manufacturers. Symposium 42. [AHRD Conference, 2001].

ERIC Educational Resources Information Center

2001

This symposium on human resource development (HRD) and small manufacturers consists of three presentations. "Toward a Model of Technical Assistance for Small Manufacturers: The Role of Performance Technology" (Dale C. Brandenburg) reviews literature documenting the need for technical assistance to small manufacturers, especially as it…

Diabetes Care and Treatment

DTIC Science & Technology

2007-09-01

disease – local affiliate of the National Kidney Foundation Liver disease (Hepatitis B and C) – HMSA Foundation grant Bariatric surgery – Springfield...Birkmire-Peters, Lawrence Burgess, Dale Vincent, and Benjamin Berg met with Charles Doarn, Associate Professor of Surgery and Biomedical Engineering and

Shaping the Future of Foreign Language Education: FLES, Articulation, and Proficiency. Report of Central States Conference on the Teaching of Foreign Languages.

ERIC Educational Resources Information Center

Lalande, John F. II, Ed.

Selected papers from the 1988 conference on foreign language issues for the future include: "Articulation for Elementary School Foreign Language Programs: Challenges and Opportunities" (Carol Ann Pesola); "Articulation: A Resolvable Problem?" (Dale L. Lange); "Profiles of Frustration: Second Language Learners with Specific Learning Disabilities"…

Knowledge-Driven Design of Virtual Patient Simulations

ERIC Educational Resources Information Center

Vergara, Victor; Caudell, Thomas; Goldsmith, Timothy; Panaiotis; Alverson, Dale

2009-01-01

Virtual worlds provide unique opportunities for instructors to promote, study, and evaluate student learning and comprehension. In this article, Victor Vergara, Thomas Caudell, Timothy Goldsmith, Panaiotis, and Dale Alverson explore the advantages of using virtual reality environments to create simulations for medical students. Virtual simulations…

Research perspectives overview at DBNRRC to maintain sustainable food security

USDA-ARS?s Scientific Manuscript database

The research issues that the Dale Bumpers National Rice Research Center (DBNRRC) is addressing for the rice industry and research community are 1) changing rice production practices, 2) diminishing irrigation resources, 3) loss of export markets due to poor quality, 4) emerging high value specialty...

11. VIEW NORTH, SOUTH FRONT OF MAIN OFFICE UNIT (BUILDING ...

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

11. VIEW NORTH, SOUTH FRONT OF MAIN OFFICE UNIT (BUILDING I, 2); SOUTH AND EAST FRONTS OF SEED STORAGE BUILDING (BUILDING 21); EAST FRONT OF GREENHOUSE #1 (BUILDING 5) - U.S. Plant Introduction Station, 11601 Old Pond Road, Glenn Dale, Prince George's County, MD

ECN-1880

NASA Image and Video Library

1969-01-09

Flight Research Center and Dryden Flight Research Center engineer R. Dale Reed has long used free-flight models to test new concepts. This photo from 1963 shows two different models of the M2-F2 (one under the Mothership) and four Hyper III shapes.

77 FR 9657 - Ocean Transportation Intermediary License Applicants

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-17

..., President/Treasurer/Secretary, (Qualifying Individual), Application Type: Trade Name Change/QI Change...), Christopher Dale, Director/President/CEO, Application Type: Trade Name Change/QI Change. Dated: February 13...), Application Type: QI Change/Add OFF Service. Eagle Van Lines, Inc. (NVO & OFF), 5041 Beech Place, Temple Hills...

76 FR 33757 - Ocean Transportation Intermediary License; Applicants

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-09

... Club Drive, Bensenville, IL 60106. Officers: Dale Jordon, Director (Operations), (Qualifying Individual...), Application Type: Add OFF Service. Oceanic Link USA LLC (NVO & OFF), 5430 Jimmy Carter Blvd., Suite 216... NVO & OFF License. The Ultimate Logistics Service Corporation (NVO & OFF), 3 Birch Place, Pine Brook...

Proof Search in an Authorization Logic

DTIC Science & Technology

2009-04-14

and Itay Neeman. DKAL: Distributed-knowledge authorization language. In Proceedings of the 21st IEEE Symposium on Computer Security Foundations (CSF...21), 2008. [33] Yuri Gurevich and Itay Neeman. The logic of infons. Technical report, Microsoft Research, 2009. [34] Joshua S. Hodas and Dale Miller

Organizing to Manage Base-Level Service Contracts in the 1990s.

DTIC Science & Technology

1986-04-01

management of service contracts is the present day organizational structure. The structure is flawed and violates basic principles of management . Until the...are classic principles of management . To state the principle I will quote Ernest Dale: "Authority should be commensurate with responsibility. That is

Candid views of STS-41C crew preparing food on middeck

NASA Image and Video Library

1984-04-08

Candid views of the STS-41C crew preparing and eating food on the middeck include : Mission pilot Francis R. (Dick) Scobee goes bobbing for a morsel of food from his position on the middeck near the galley.

Summer Reading

NASA Astrophysics Data System (ADS)

Harris, Harold H.; Kovac, Jeffrey; Pagni, Richard M.; Coppola, Brian P.

2004-06-01

Summer, a great time for leisure reading! Try to set aside some time and find a quiet spot, because once again Hal Harris, Dick Pagni, Jeff Kovac, and Brian Coppola have a variety of interesting suggestions for you.

KSC-2013-2217

NASA Image and Video Library

2013-04-27

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center Visitor Complex in Florida, previous winners of the National Space Club Florid Committee's Dr. Kurt H. Debus Award pose with this year's honoree, center director Bob Cabana. From the left, are: Rick Abramson, Dick Beagley, Dick Lyon, Patty Stratton, Lyle Holloway, Lee Solid, Cabana, Dr. Maxwell King, Bob Sieck, Jerry Jamison, Roy Tharpe and Ernie Briel. A former U.S. Marine Corps aviator and NASA astronaut, Cabana was honored at the gala Debus Award Dinner. Named for the spaceport’s first director, the Debus Award was created to recognize significant achievements and contributions made in Florida to American aerospace efforts. The Debus Award was created by the space club's Florida committee to recognize significant achievements and contributions made in Florida to American aerospace efforts. Photo credit: NASA/Jim Grossmann

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bhattacharya, Sourav; Dialektopoulos, Konstantinos F.; Romano, Antonio Enea

The maximum size of a cosmic structure is given by the maximum turnaround radius—the scale where the attraction due to its mass is balanced by the repulsion due to dark energy. We derive generic formulae for the estimation of the maximum turnaround radius in any theory of gravity obeying the Einstein equivalence principle, in two situations: on a spherically symmetric spacetime and on a perturbed Friedman-Robertson-Walker spacetime. We show that the two formulae agree. As an application of our formula, we calculate the maximum turnaround radius in the case of the Brans-Dicke theory of gravity. We find that for thismore » theory, such maximum sizes always lie above the ΛCDM value, by a factor 1 + 1/3ω, where ω>> 1 is the Brans-Dicke parameter, implying consistency of the theory with current data.« less

Phantom energy mediates a long-range repulsive force.

PubMed

Amendola, Luca

2004-10-29

Scalar field models with nonstandard kinetic terms have been proposed in the context of k inflation, of Born-Infeld Lagrangians, of phantom energy and, more in general, of low-energy string theory. In general, scalar fields are expected to couple to matter inducing a new interaction. In this Letter I derive the cosmological perturbation equations and the Yukawa correction to gravity for such general models. I find three interesting results: first, when the field behaves as phantom energy (equation of state less than -1), then the coupling strength is negative, inducing a long-range repulsive force; second, the dark-energy field might cluster on astrophysical scales; third, applying the formalism to a Brans-Dicke theory with a general kinetic term it is shown that its Newtonian effects depend on a single parameter that generalizes the Brans-Dicke constant.

Design of multiple representations e-learning resources based on a contextual approach for the basic physics course

NASA Astrophysics Data System (ADS)

Bakri, F.; Muliyati, D.

2018-05-01

This research aims to design e-learning resources with multiple representations based on a contextual approach for the Basic Physics Course. The research uses the research and development methods accordance Dick & Carey strategy. The development carried out in the digital laboratory of Physics Education Department, Mathematics and Science Faculty, Universitas Negeri Jakarta. The result of the process of product development with Dick & Carey strategy, have produced e-learning design of the Basic Physics Course is presented in multiple representations in contextual learning syntax. The appropriate of representation used in the design of learning basic physics include: concept map, video, figures, data tables of experiment results, charts of data tables, the verbal explanations, mathematical equations, problem and solutions example, and exercise. Multiple representations are presented in the form of contextual learning by stages: relating, experiencing, applying, transferring, and cooperating.

The Practical Astronomer

NASA Astrophysics Data System (ADS)

Koester, Jack

"The Practical Astronomer" by Thomas Dick, LLD, E.C. & J. Biddle, Philadelphia, 1849, is reviewed. Information on telescope makers and astronomers can be found. Mentioned are: Fraunhofer; John Herschel; Lawson; Dollond; Tulley; W. & S. Jones; and S.W. Burnham.

I See Your Smart Phone and Raise You Smart Bacteria

Science.gov Websites

understanding how bacteria sense their nearest neighbors (including pathogens), a DTRA CB/JSTO-funded research ;wild type" E. coli was tested via reverse transcription quantitative polymerase chain reactions Director of Research, Dale Ormond, kicks off #MATHCOUNTS #NationalCompetition2018 Countdown Round

78 FR 63193 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-23

... September 12, 2012 B. New Business Farmer Mac Liquidity Management--Final Rule Flood Insurance--Proposed... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration..., McLean, Virginia 22102-5090. SUPPLEMENTARY INFORMATION: This meeting of the Board will be open to the...

76 FR 69269 - Farm Credit Administration Board; Sunshine Act; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-08

... B. New Business Liquidity and Funding--Proposed Rule C. Report OMS Quarterly Report Closed Session... business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit Administration..., McLean, Virginia 22102-5090. SUPPLEMENTARY INFORMATION: Parts of this meeting of the Board will be open...

ESL through Content-Area Instruction: Mathematics, Science, Social Studies. Language in Education: Theory and Practice, No. 69.

ERIC Educational Resources Information Center

Crandall, JoAnn, Ed.; And Others

Three essays focus on integrating subject matter and the English used to communicate it as a technique for teaching limited-English-proficient students. "Integrating Language and Mathematics Learning," by Theresa Corasaniti Dale and Gilberto J. Cuevas, discusses the vocabulary, syntax, semantics, and discourse features of mathematics;…

Aquatic Plant Control Research Program. Biological Control of Pistia stratiotes L. (Waterlettuce) Using Neohydronomus affinis Hustache (Coleoptera: Curculionidae).

DTIC Science & Technology

1992-07-01

plant must also be examined for herbivores attacking the weed. This ensures that time and money are not wasted by importing insects already present in...Agricultural Research Service Aquatic Weed Research Laboratory in Fort Lauder - dale, FL, from quarantine tacilities in Gainesville, FL, on 11 February

Rice diversity panels available through the genetic stocks oryza collection

USDA-ARS?s Scientific Manuscript database

The Genetic Stocks Oryza (GSOR) Collection was established in 2004 at the USDA-ARS, Dale Bumpers National Rice Research Center (DBNRRC) located in Stuttgart, AR. The mission of GSOR is to provide unique genetic resources to the rice research community for genetic and genomics related research. GSOR ...

A Comparative Study between U.S. and Brazilian Acquisition Regulations and Practices

DTIC Science & Technology

2011-03-01

to describe continuous improvements efforts ( Render and Heizer , 2008). Caddick and Dale (1998) on their paper ‘The impact of quality management on...2002). Outsourcing in Edinburgh and the Lothians. European Journal of Purchasing and Supply Chain Management 8 (2) 83-95. Render , Barry; Heizer , Jay

VizieR Online Data Catalog: LVL global optical photometry (Cook+, 2014)

NASA Astrophysics Data System (ADS)

Cook, D. O.; Dale, D. A.; Johnson, B. D.; van Zee, L.; Lee, J. C.; Kennicutt, R. C.; Calzetti, D.; Staudaher, S. M.; Engelbracht, C. W.

2015-05-01

The LVL sample consists of 258 of our nearest galaxy neighbours reflecting a statistically complete, representative sample of the local Universe. The sample selection and description are detailed in Dale et al. (2009ApJ...703..517D, Cat. J/ApJ/703/517). (4 data files).

VizieR Online Data Catalog: LVL SEDs and physical properties (Cook+, 2014)

NASA Astrophysics Data System (ADS)

Cook, D. O.; Dale, D. A.; Johnson, B. D.; van Zee, L.; Lee, J. C.; Kennicutt, R. C.; Calzetti, D.; Staudaher, S. M.; Engelbracht, C. W.

2015-05-01

The LVL sample consists of 258 of our nearest galaxy neighbours reflecting a statistically complete, representative sample of the local Universe. The sample selection and description are detailed in Dale et al. (2009ApJ...703..517D, Cat. J/ApJ/703/517). (1 data file).

Matching Readers to Instructional Materials: The Use of Classic Readability Measures for Students with Language Learning Disabilities and Dyslexia.

ERIC Educational Resources Information Center

Kotula, Andrea Winokur

2003-01-01

The matching of students with language learning disabilities and dyslexia to appropriate reading materials is discussed, and formal and informal methods are presented for determining reading levels for accuracy, fluency, and comprehension instruction and practice. The Spache Readability Formula, the New Dale-Challe Readability Formula, and…

Cultivar and maturity effects on the quality attributes and ethanol potential of sweet sorghum

USDA-ARS?s Scientific Manuscript database

Sweet sorghum is a promising feedstock crop for the manufacture of biofuels and bioproducts. Its large starch content may be an opportune source of untapped fermentable sugars to add economical value to sweet sorghum juices and processing by-products. In this study, four commercial cultivars, Dale, ...

Research about the high precision temperature measurement

NASA Astrophysics Data System (ADS)

Lin, J.; Yu, J.; Zhu, X.; Zeng, Z.; Deng, Y.

2012-12-01

High precision temperature control system is one of most important support conditions for tunable birefringent filter.As the first step,we researched some high precision temperature measurement methods for it. Firstly, circuits with a 24 bit ADC as the sensor's reader were carefully designed; Secondly, an ARM porcessor is used as the centrol processing unit, it provides sufficient reading and procesing ability; Thirdly, three kinds of sensors, PT100, Dale 01T1002-5 thermistor, Wheatstone bridge(constructed by pure copper and manganin) as the senor of the temperature were tested respectively. The resolution of the measurement with these three kinds of sensors are all better than 0.001 that's enough for 0.01 stability temperature control. Comparatively, Dale 01T1002-5 thermistor could get the most accurate temperature of the key point, Wheatstone bridge could get the most accurate mean temperature of the whole layer, both of them will be used in our futrue temperature controll system.

STS-46 Post Launch News Conference

NASA Technical Reports Server (NTRS)

1992-01-01

Dick Young introduces Brewster Shaw, Deputy Director of the Space Shuttle Program, and Robert B. Sieck, Launch Director of Kennedy Space Center. Shaw and Young give an overview of the launch of the spaceship Atlantis and answer questions from the press.

Oversight Hearing on Drug Abuse Education Programs. Hearing before the Subcommittee on Elementary, Secondary, and Vocational Education of the Committee on Education and Labor. House of Representatives, 101st Congress, 2nd Session (Vancouver, Washington, September 6, 1990).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

The text of an oversight hearing on Drug Abuse Resistance Education (DARE) programs is presented in this document. Introductory statements by Representatives Jolene Unsoeld and Dale E. Kildee are presented. Testimony by these witnesses is included: (1) Roy Bondurant, student, and Roy "Skip" Bondurant, parent, Tenino, Washington; (2) Paul…

Toward a Hermeneutical Theory of International Human Rights Education

ERIC Educational Resources Information Center

Al-Daraweesh, Fuad; Snauwaert, Dale T.

2013-01-01

The purpose of this essay is to articulate and defend the epistemological foundations of international human rights education from the perspective of a hermeneutical interpretive methodology. Fuad Al-Daraweesh and Dale Snauwaert argue here that this methodology potentially alleviates the challenges that face the cross-cultural implementation of…

Assessment Update: Progress, Trends, and Practices in Higher Education. Volume 24, Issue 2, March-April 2012

ERIC Educational Resources Information Center

Banta, Trudy W., Ed.

2012-01-01

This issue of "Assessment Update" presents the following articles: (1) Mission Accomplished! The Development of a Competence-based E-portfolio Assessment Model (Shelley Schuurman, Scott Berlin, Jamie Langlois, and Julie Guevara); (2) The Third Rail of Assessment--Dangerous but Powerful (Dale L. Mort); (3) Video Killed the Radio…

A Research Program in Computer Technology

DTIC Science & Technology

1975-09-01

Dale M. Chase Neil M. Goldman Jeannette Christen~sen Norton R. Green feld Kathie Cole grove John F. Heafner Nancy Dechter James Koda Oralio E. Garza...Thomas L. Boynton Stephen L. Casner E. Randolph Cole James Koda Robert Parker Paul Raveling Dono Van-Mierop Research Assistant: John K. Kastner

75 FR 23600 - Final Flood Elevation Determinations

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-04

... feet +571 upstream of the confluence with Millers Creek. Dale Hollow Lake (Wolf River) At the confluence with +663 Unincorporated Areas of the Wolf River. Clinton County. Approximately 1,800 feet +663 upstream of the confluence with Spring Creek. Lake Cumberland Just upstream of the Wolf +760 Unincorporated...

78 FR 68151 - Quarterly Publication of Individuals, Who Have Chosen To Expatriate, as Required by Section 6039G

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-13

... purposes of this listing, long-term residents, as defined in section 877(e)(2), are treated as if they were... VIRGINIA E DABBAH ALBERT ABRAHAM DALE ROSEMARY ELIZABETH DANISCH CHARLOTTE......... ROSE DASWANI DINISHA... MARGARET MARY EL HADJ SARAH JANE ELDER ADRIENNE E ELWES CLARE HANNON ENEBERG MICHAEL ERVINE CHRISTINE...

Organizational Change in the Russian Airborne Forces: The Lessons of the Georgian Conflict

DTIC Science & Technology

2011-12-01

with Georgia, the general pace of Russian military reform —which had, prior to the conflict, been moving at a glacial pace—increased exponentially...Training and Troop Service Directorate. 44. Dale Herspring and Roger McDermott, “Serdyukov Pro- motes Systemic Russian Military Reform ,” Orbis, Vol. 54, No

76 FR 55908 - Farm Credit System Insurance Corporation Board; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-09

... FCSIC Report on System Performance Open Session A. Approval of Minutes June 21, 2011 B. Business Reports... Performance Plan C. New Business Annual Performance Plan FY 2012-2013 Proposed 2012 and 2013 Budgets Insurance... concludes its business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm Credit...

The Primary Sequence of Acetylcholinesterase and Selective Antibodies for the Detection of Organophosphate Toxicity

DTIC Science & Technology

1991-06-07

Ava1iability ftass ,,, I I .., I. INTRODUCTION Sir Henry Dale, in 1914, suggested that an enzyme which degrades the esters of choline played a role in...yielded the deacylated peptide containing the glycan- inositol which could be isolated by size-fractionation followed by reverse phase high pressure

Power increase at first ProCure21 project.

PubMed

2007-06-01

Throughout the UK, hospitals are embarking on new-build programmes to meet the needs of growing communities. However, site acreage and accommodation are often already under pressure, as Dale Power Solutions found when it was commissioned to increase standby power availability at the Friarage Hospital in Northallerton, North Yorkshire.

Classroom Teachers and Classroom Research. JALT Applied Materials.

ERIC Educational Resources Information Center

Griffee, Dale T., Ed.; Nunan, David, Ed.

This collection of papers leads classroom language teachers through the process of developing and completing a classroom research project. Arranged in four sections, they include: "Language Teaching and Research" (David Nunan); "Where Are We Now? Trends, Teachers, and Classroom Research" (Dale T. Griffee); "First Things First: Writing the Research…

Computers in Science Education: Can They Go Far Enough? Have We Gone Too Far?

ERIC Educational Resources Information Center

Schrock, John Richard

1984-01-01

Indicates that although computers may churn out creative research, science is still dependent on science education, and that science education consists of increasing human experience. Also considers uses and misuses of computers in the science classroom, examining Edgar Dale's "cone of experience" related to laboratory computer and "extended…

Final Environmental Assessment: Construction of New Arnold Village Sewage Treatment Plant Arnold Air Force Base, Tennessee

DTIC Science & Technology

2004-05-01

from the north. Most of the birds winter in western parts of the state, particularly at Reelfoot Lake and Dale Hollow Reservoir, but bald eagles may...Hydrology Hydrological features consist of surface waters ( lakes , rivers, streams, and springs) and groundwater. Arnold AFB lies within the Duck River and

75 FR 55515 - Proposed Flood Elevation Determinations

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-13

... Road. Township of Hollenback, Township of Rice, Township of Wright. Approximately 535 feet None +1526 upstream of Dale Drive. Black Creek Approximately 910 feet None +1461 Borough of West upstream of Hazleton.... Township of Rice Maps are available for inspection at the Rice Township Building, 3000 Church Road...

A Long-Term Predictive Validity Study: Can the CDI Short Form be Used to Predict Language and Early Literacy Skills Four Years Later?

ERIC Educational Resources Information Center

Can, Dilara Deniz; Ginsburg-Block, Marika; Golinkoff, Roberta Michnick; Hirsh-Pasek, Kathryn

2013-01-01

This longitudinal study examined the predictive validity of the MacArthur Communicative Developmental Inventories-Short Form (CDI-SF), a parent report questionnaire about children's language development (Fenson, Pethick, Renda, Cox, Dale & Reznick, 2000). Data were first gathered from parents on the CDI-SF vocabulary scores for seventy-six…

Camera Ready: Capturing a Digital History of Chester

ERIC Educational Resources Information Center

Lehman, Kathy

2008-01-01

Armed with digital cameras, voice recorders, and movie cameras, students from Thomas Dale High School in Chester, Virginia, have been exploring neighborhoods, interviewing residents, and collecting memories of their hometown. In this article, the author describes "Digital History of Chester", a project for creating a commemorative DVD.…

High Interest - Low Vocabulary Science Books, Reading Level Grades 1-4 (Prepared for the Remedial Reading Teacher).

ERIC Educational Resources Information Center

Gott, Margaret E., Comp.; Wailes, James R., Comp.

This booklist is intended for elementary school science students with high interest and low vocabulary skills. The Spache Readability Scale, Dale-Chall formula, sentence structure, paragraph flow, illustration, and diagram analysis or publishers stated grade level were used to determine grade level designations. The included interest level varies…

A Proposed Multimedia Cone of Abstraction: Updating a Classic Instructional Design Theory

ERIC Educational Resources Information Center

Baukal, Charles E.; Ausburn, Floyd B.; Ausburn, Lynna J.

2013-01-01

Advanced multimedia techniques offer significant learning potential for students. Dale (1946, 1954, 1969) developed a Cone of Experience (CoE) which is a hierarchy of learning experiences ranging from direct participation to abstract symbolic expression. This paper updates the CoE for today's technology and learning context, specifically focused…

KSC-07pd3607

NASA Image and Video Library

2007-12-11

PETEN, GUATEMALA -- NASA's Deputy Administrator Shana Dale and NASA Research Scientist Dr. William Saturno investigate the San Bartolo Maya archaeological site in Peten, Guatemala, on Dec. 11. NASA's remote sensing data were used to locate and interpret the remains of the ancient Maya civilization. Photo credit: NASA/Bill Ingalls

07pd3608

NASA Image and Video Library

2007-12-11

NASA's Deputy Administrator Shana Dale and NASA Research Scientist Dr. William Saturno investigate the San Bartolo Maya archaeological site in Peten, Guatemala, Tuesday Dec. 11, 2007. NASA's remote sensing data were used to locate and interpret the remains of the ancient Maya civilization. Photo Credit: (NASA/Bill Ingalls)

KSC-07pd3608

NASA Image and Video Library

2007-12-11

PETEN, GUATEMALA -- NASA's Deputy Administrator Shana Dale and NASA Research Scientist Dr. William Saturno investigate the San Bartolo Maya archaeological site in Peten, Guatemala, on Dec. 11. NASA's remote sensing data were used to locate and interpret the remains of the ancient Maya civilization. Photo credit: NASA/Bill Ingalls

07pd3607

NASA Image and Video Library

2007-12-11

NASA's Deputy Administrator Shana Dale and NASA Research Scientist Dr. William Saturno investigate the San Bartolo Maya archaeological site in Peten, Guatemala, Tuesday Dec. 11, 2007. NASA's remote sensing data were used to locate and interpret the remains of the ancient Maya civilization. Photo Credit: (NASA/Bill Ingalls)

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Dale Jarrett poses outside the hatch of orbiter Endeavour. Jarrett and other drivers Ryan Newman and Jimmie Johnson were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers tour KSC

NASA Image and Video Library

2003-07-02

Three NASCAR drivers, (from left) Jimmie Johnson, Dale Jarrett and Ryan Newman, get a close look at the orbiter Endeavour during their tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Jimmie Johnson poses outside the hatch of orbiter Endeavour. Johnson and other drivers Ryan Newman and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

Readability and comprehensibility of patient education material in hand-related web sites.

PubMed

Wang, Steve W; Capo, John T; Orillaza, Nathaniel

2009-09-01

As patients are more frequently referring to the Internet for information on their musculoskeletal problems, the readability and comprehensibility of these educational materials becomes increasingly more important to most of the lay public. In this study, we investigated the readability of the currently available web sites of the American Society for Surgery of the Hand (ASSH) and the American Academy of Orthopaedic Surgeons (AAOS) that pertain to hand and wrist problems, to assess their usefulness as a source for patient information. We analyzed all articles available in 2008 from the AAOS web site within the Patient Education Library under the heading, "Hand & Wrist" and from the ASSH web site under the heading, "Hand Conditions." A total of 83 articles were identified for hand conditions. Each article was analyzed by the Flesch-Kincaid program available in Microsoft Office Word software and the Dale-Chall grade-level assessor. These program models analyze all words in the specified text and return a grade level that corresponds to the difficulty level of the text. The AAOS web sites contained 34 articles with a mean Flesch-Kincaid grade level of 8.5 and a mean Dale-Chall grade level of 8.8. The ASSH web site contained 49 articles showing a mean Flesch-Kincaid grade level of 10.4 and a mean Dale-Chall grade level of 10.8. Our results suggest that the patient education materials found on the AAOS and ASSH web sites have readability scores that are higher than the recommended reading levels and thus may be too difficult to be understood by a substantial portion of the U.S. population.

STS 51-L crewmembers during training session in flight deck simulation

NASA Technical Reports Server (NTRS)

1985-01-01

S85-46207 (December 1985) --- Shuttle Mission Simulator (SMS) scene of astronauts Michael J. Smith, Ellison S. Onizuka, Judith A. Resnik, and Francis R. (Dick) Scobee in their launch and entry positions on the flight deck. The photo was taken by Bill Bowers.

Summer Reading

NASA Astrophysics Data System (ADS)

Kovac, Jeffrey; Pagni, Richard M.; Harris, Harold H.; Coppola, Brian P.

2002-06-01

Ah, summer approaches! Perhaps you will find some time for leisure reading. With this hope in mind, here are a few suggestions that Jeff Kovac, our Book & Media Reviews Editor, has assembled with the help of Dick Pagni, Hal Harris, and Brian Coppola.

Summer Reading

NASA Astrophysics Data System (ADS)

Kovac, Jeffrey; Pagni, Richard; Harris, Harold H.; Coppola, Brian P.

2001-06-01

Ah, summer approaches! Perhaps you will find some time for leisure reading. With this hope in mind, here are a few suggestions that Jeff Kovac, our Book & Media Reviews Editor, has assembled with the help of Dick Pagni, Hal Harris, and Brian Coppola.

The Journal of the Imagination in Language Learning and Teaching, 2002-2003.

ERIC Educational Resources Information Center

Coreil, Clyde, Ed.

2003-01-01

This collection of papers includes: "Martians Invade the Classroom: A Workshop in Language Learning" (Carmine Tabone and Robert Albrecht); "Autonomous Learning through Cinema: One Learner's Memories" (Connie Haham); "Learning a Second Language Through Culture" (Barbara Le Blanc and Joseph Dicks); "Shakespeare for…

HIV/AIDS and Children in the English Speaking Caribbean.

ERIC Educational Resources Information Center

Dicks, Barbara A., Ed.

This collection of papers addresses the HIV/AIDS situation among English-speaking children in the Caribbean. Papers include: "Preface" (C. James Hospedales); "Introduction"; (Barbara A. Dicks); "HIV/AIDS: Challenging a Monster" (Brendan Bain); "HIV/AIDS in Caribbean Children and Adolescents" (Noreen Jack);…

Semi-classical dynamics of superradiant Rayleigh scattering in a Bose-Einstein condensate

NASA Astrophysics Data System (ADS)

Müller, J. H.; Witthaut, D.; le Targat, R.; Arlt, J. J.; Polzik, E. S.; Hilliard, A. J.

2016-10-01

Due to its coherence properties and high optical depth, a Bose-Einstein condensate [BEC] provides an ideal setting to investigate collective atom-light interactions. Superradiant light scattering [SLS] in a BEC is a fascinating example of such an interaction. It is an analogous process to Dicke superradiance, in which an electronically inverted sample decays collectively, leading to the emission of one or more light pulses in a well-defined direction. Through time-resolved measurements of the superradiant light pulses emitted by an end-pumped BEC, we study the close connection of SLS with Dicke superradiance. A 1D model of the system yields good agreement with the experimental data and shows that the dynamics result from the structures that build up in the light and matter-wave fields along the BEC. This paves the way for exploiting the atom-photon correlations generated by the superradiance.

KITE POWER FOR NAMIBIA, AFRICA

EPA Science Inventory

The Phase I WPI Kite Power Team consisted of eleven WPI students, Dr. David J. Olinger (PI), Dr. Jitendra of the Rohm and Haas Company, and Dale Perkins of Heifer International’s Overlook Farm. The work of the WPI Kite Power Team was completed in two student projects, a ...

More than Words: Comics as a Means of Teaching Multiple Literacies

ERIC Educational Resources Information Center

Jacobs, Dale

2007-01-01

Historically, comics have been viewed as a "debased or simplified word-based literacy," explains Dale Jacobs, who considers comics to be complex, multimodal texts. Examining Ted Naifeh's "Polly and the Pirates," Jacobs shows how comics can engage students in multiple literacies, furthering meaning-making practices in the classroom and beyond.

Post-harvest changes in sweet sorghum II: pH, acidity, protein, starch, and mannitol

USDA-ARS?s Scientific Manuscript database

This experiment was conducted to evaluate the effect of four harvesting methods on juice quality and storability in sweet sorghum. Three cultivars (Dale, Theis, and M81-E) were harvested at 90, 115, and 140 days after planting. Stalks were stripped of leaves and topped at the peduncle, then divide...

MGS Online, Maryland Geological Survey's Internet Home

Science.gov Websites

Maryland Department of Natural Resources Maryland Geological Survey State of Maryland Home Maryland available through the Maryland Geological Survey. Explore our website! (Dale Shelton of MGS discusses the the Maryland Geological Survey! The Maryland Geological Survey, created in 1896, is a scientific

Maskless Lithography Using Surface Plasmon Enhanced Illumination

DTIC Science & Technology

2007-04-30

Dale Larson Figure 1. Nanohole array probes exhibiting extraordinary optical transmission of light with a high degree of collimation. Left: a bull’s...Technol. B 22, 3552-3556 (2004). 2. Stark, P., Halleck, A. E. & Larson, D. N. Short order nanohole arrays in metals for highly sensitive probing of local

E-Learn 2012. World Conference on E-Learning in Corporate, Government, Healthcare, & Higher Education. Proceedings (Montreal, Quebec, Canada, October 9-12, 2012)

ERIC Educational Resources Information Center

Association for the Advancement of Computing in Education, 2012

2012-01-01

This year's E-Learn conference has numerous exciting presentations and keynotes. Many speakers will be discussing how education is changing in the forthcoming years. Among them are Dale Stephens who works with the social movement "Uncollege" that empower students to create their own education, Saul Carliner who talks about Massive Online…

75 FR 65229 - Privacy Act; Implementation

Federal Register 2010, 2011, 2012, 2013, 2014

2010-10-22

... DEPARTMENT OF THE TREASURY Office of the Secretary 31 CFR Part 1 RIN 1505-AC26 Privacy Act... accordance with the requirements of the Privacy Act of 1974, as amended, the Department of the Treasury is...: October 22, 2010. FOR FURTHER INFORMATION CONTACT: Dale Underwood, Privacy Act officer, Department of the...

A Study on the Mobile Learning of English and American Literature Based on WeChat Public Account

ERIC Educational Resources Information Center

Dai, Guiyu; Liu, Yang; Cui, Shanmeng

2018-01-01

This paper uses Edgar Dale's Audio-visual Learning Theory and Jean Piaget's Constructionist Learning Theory as the theoretical framework to conduct two control experimental tests and a questionnaire research to investigate students' impression and expectations toward WeChat public account based mobile learning mode as well as its validity,…

Linguistically Motivated Features for CCG Realization Ranking

ERIC Educational Resources Information Center

Rajkumar, Rajakrishnan

2012-01-01

Natural Language Generation (NLG) is the process of generating natural language text from an input, which is a communicative goal and a database or knowledge base. Informally, the architecture of a standard NLG system consists of the following modules (Reiter and Dale, 2000): content determination, sentence planning (or microplanning) and surface…

Community College Leadership for the '80s. AACJC Leadership Bookshelf Series, Number 1.

ERIC Educational Resources Information Center

Roueche, John E., Ed.; Baker, George A., III, Ed.

These essays were prepared by leaders with recognized success in community college and university management, who were asked to share their experiences, the techniques they have found useful, and their personal views about community college leadership. After an introduction by Dale Parnell to the importance of leadership in institutional success,…

Hearing on the Reauthorization of the Juvenile Justice and Delinquency Prevention Act. Hearing before the Subcommittee on Human Resources of the Committee on Education and Labor. House of Representatives, One Hundred Second Congress, Second Session.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

Testimony from a hearing on the Reauthorization of the Juvenile Justice and Delinquency Prevention Act is presented in this document. Comments and a prepared statement by Representative Matthew G. Martinez open the document. Testimony from Representatives Harris W. Fawell and Dale E. Kildee is also included. Testimony and/or prepared statements…

Early Intervention Curricula and Subsequent Adolescent Social Development: A Longitudinal Examination

ERIC Educational Resources Information Center

Cole, Kevin N.; Mills, Paulette E.; Jenkins, Joseph R.; Dale, Philip S.

2005-01-01

In a previous study of the differential effects of contrasting early intervention programs on later social behavior (Mills, Cole, Jenkins, & Dale, 2002), we found no differences in self-report of juvenile delinquency at age 15 for children enrolled in direct instruction and child-directed models. These results disconfirmed the conclusion of…

Photographer: NASA Ames On 20 December 1989, Ames buried a time capsule and unveiled a sculpture at

NASA Technical Reports Server (NTRS)

1989-01-01

Photographer: NASA Ames On 20 December 1989, Ames buried a time capsule and unveiled a sculpture at the spot where, fifty years earlier, Russel Robinson had turned the first spade of dirt for the Ames construction shack: Robinson (left) Ames Director Dale Compton (center) and Ames Deputy Director Sy Syvertson (right)

College Quality and Early Adult Outcomes

ERIC Educational Resources Information Center

Long, Mark C.

2008-01-01

This paper estimates the effects of various college qualities on several early adult outcomes, using panel data from the National Education Longitudinal Study. I compare the results using ordinary least squares with three alternative methods of estimation, including instrumental variables, and the methods used by Dale and Krueger [(2002).…

The Evolution of School Improvement from the Classroom Teacher's Perspective.

ERIC Educational Resources Information Center

Thompson, Marci; Mitchell, Deborah

2002-01-01

Highlights changes that have occurred since 1992 at Elm Dale Elementary School (Greenfield, Wisconsin) through the school improvement process. Describes how teachers have become involved in and developed ownership of the improvement process, and how they have learned to analyze data. Asserts that the school improvement process has changed the…

75 FR 20998 - Ocean Transportation Intermediary License; Reissuance

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-22

... Logistics, Commercial Port Annex, 2nd Floor, 1010 Cabras Highway Piti, Guam 96915. 018413NF Chicago Int'l Forwarder February 11, 2010. Incorporated, 423 East Irving Park Road, Wood Dale, IL 60191. 019908NF International Trade Management February 21, 2010. Group, LLC dba Patriot Lines, dba ITM Logistics, 611 Live Oak...

The Army Reserve Forces Policy Committee

DTIC Science & Technology

1975-02-17

in Politics, pp. 68-69~ 88-89. 33. Charles Dale Story, The Formulation of Army Reserve Forces Policy: Its Setting Amidst Pressure Group Activity...i:...;o:;;..:n:.=.......-=o-=f:__;;:A..:;.r=..:.:.m:.J..y_..;;.R:...:.e=s-=e-=r=-v=-e=­ Forces Policy: its setting amidst pressure group activity

Evaluating the HCU (Health Care Unit) for Performance Monitoring and Resource Allocation Decisions Using Navy Ambulatory Care UCA (Uniform Chart of Accounts) Expense and Workload Data.

DTIC Science & Technology

1986-08-01

liminary analyses of the data foDr this study and to LCEEL Mabelle Sturm, NC, USN(R-R) for her assistance in drafting the background section of this...performed by Andrew Zhikowsld. and the file conversion NATLJRAL prograig performed by Dale Edgeington. 54 P p p . . . - ..- - - ]- Referernces 1. Rice , J. D

78 FR 73859 - Farm Credit System Insurance Corporation Board; Regular Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-09

...: Open Session A. Approval of Minutes September 12, 2013 B. Business Reports September 30, 2013 Financial... Credit Administration in McLean, Virginia, on December 12, 2013, from 1:00 p.m. until such time as the Board concludes its business. FOR FURTHER INFORMATION CONTACT: Dale L. Aultman, Secretary to the Farm...

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Jimmie Johnson gets a close look at the orbiter Endeavour. Johnson and other drivers Ryan Newman and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Ryan Newman gets a close look at the orbiter Endeavour. Newman and other drivers Jimmie Johnson and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

THE AQUATOX MODEL

EPA Science Inventory

This lecture will present AQUATOX, an aquatic ecosystem simulation model developed by Dr. Dick Park and supported by the U.S. EPA. The AQUATOX model predicts the fate of various pollutants, such as nutrients and organic chemicals, and their effects on the ecosystem, including fi...

Apollo 40th Anniversary History Panel

NASA Image and Video Library

2009-07-15

NASA chief historian Steven Dick, seated left, along with John Logsdon, Roger Launius, Michael Neufeld, Cristina Guidi and Craig Nelson, are seen at an Apollo History and Legacy roundtable discussion, Thursday, July 16, 2009, at NASA Headquarters in Washington. Photo Credit: (NASA/Paul E. Alers)

Language for Profit: Spanish-English Bilingualism in Lowe's Home Improvement

ERIC Educational Resources Information Center

Hepford, Elizabeth A.

2017-01-01

The USA is commonly portrayed as a country dominated by the ideology of monolingualism [Dick, Hilary Parsons. 2011. "Language and Migration to the United States." "Annual Review of Anthropology" 40: 227-240; Silverstein, Michael. 1996. "Monoglot 'Standard' in America: Standardization and Metaphors of Linguistic…

Do Concretely and Abstractly Worded Arguments Require Different Models?

ERIC Educational Resources Information Center

Hample, Dale

Dale Hample's cognitive model of argument is designed to reflect the operation of syllogistic thought processes. It has been suggested however, that the model applies more closely to abstractly worded arguments than to concrete thinking and that it also may work better with more interested respondents because it seems to describe the central…

Approaches to modeling landscape-scale drought-induced forest mortality

Treesearch

Eric J. Gustafson; Douglas J. Shinneman

2015-01-01

Global changes, including climate change, are rapidly creating new environmental conditions and stressors for forests around the world. Climate change may have modest direct effects, at least initially, but indirect effects and interactions with disturbances can produce important changes in forest composition and landscape pattern (Dale et al. 2001; Gustafson et al....

Drought occurence

Treesearch

John W. Coulston

2007-01-01

Why Is Drought Important? Drought is an important forest disturbance that occurs regularly in the Western United States and irregularly in the Eastern United States (Dale and others 2001). Moderate drought stress tends to slow plant growth while severedrought stress can also reduce photosynthesis (Kareiva and others 1993). Drought can also interact with...

America's Teacher Colleges: Are They Making the Grade? Hearing before the Subcommittee on 21st Century Competitiveness of the Committee on Education and the Workforce. House of Representatives, One Hundred Eighth Congress, First Session (May 20, 2003).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and the Workforce.

A hearing was held to explore whether U. S. teachers' colleges are doing an adequate job. Opening statements by Representative Howard P. McKeon and Representative Dale Kildee set the stage for the testimony of these witnesses: (1) Lisa Graham Keegan, Chief Executive Officer, Education Leaders Council; (2) Kati Haycock, Director, The Education…

Improving Performance in a Nuclear Cardiology Department

ERIC Educational Resources Information Center

LaFleur, Doug; Smalley, Karolyn; Austin, John

2005-01-01

Improving performance in the medical industry is an area that is ideally suited for the tools advocated by the International Society of Performance Improvement (ISPI). This paper describes an application of the tools that have been developed by Dale Brethower and Geary Rummler, two pillars of the performance improvement industry. It allows the…

KSC-03PD-2075

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. Three NASCAR drivers, (from left) Jimmie Johnson, Dale Jarrett and Ryan Newman, get a close look at the orbiter Endeavour during their tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

KSC-03PD-2081

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Ryan Newman poses outside the hatch of orbiter Endeavour. Newman and other drivers Dale Jarrett and Jimmie Johnson were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

KSC-03PD-2080

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Jimmie Johnson poses outside the hatch of orbiter Endeavour. Johnson and other drivers Ryan Newman and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

Early History of the Concept of Chemical Transmission of the Nerve Impulse.

ERIC Educational Resources Information Center

Davenport, Horace W.

1991-01-01

Describes the research efforts of scientists involved in discovering chemical transmission of the nerve impulse. The work includes that of J.N. Langley, George Oliver, Edward A. Schafer, Reid Hunt, Henry Dale, Henry Wellcome, Otto Loewi, and others. The discovery and the importance of both acetylcholine and adrenaline are also discussed. (84…

Renewing the American Community College. The Jossey-Bass Higher Education Series.

ERIC Educational Resources Information Center

Deegan, William L.; And Others

A framework for examining the future development of the community college and specific policy and program proposals is provided by the 13 essays in this collection. Part one, "The Community College in Perspective," includes "The Evolution of Two-Year Colleges Through Four Generations," by Dale Tillery and William L. Deegan; and "Determining…

Advancing Humanities Studies at Community, Technical, and Junior Colleges.

ERIC Educational Resources Information Center

Eisenberg, Diane U.; And Others

The American Association of Community and Junior Colleges' (AACJC's) two-year Advancing the Humanities Project (AHP) has assisted selected community colleges in promoting the humanities on their campuses. Parts I and II of this report on the AHP present statements by Dale Parnell and Judith Jeffrey Howard about the AACJC's humanities initiatives…

Biology Bulletins "Revisited"

ERIC Educational Resources Information Center

Audet, Richard H.

2006-01-01

In October 1981, an article appeared in "The American Biology Teacher" with the catchy title, "Bio-Bull." In it, author, Dale Carlson, described a powerful form of communication that he employed successfully in his community college classes. Each week students received what he called a "Bio-Bull" that included current biological topics,…

The Good, the Bad, and the Ugly: A Bibliographic Essay on the Corrupted Cone

ERIC Educational Resources Information Center

Subramony, Deepak Prem; Molenda, Michael; Betrus, Anthony K.; Thalheimer, Will

2014-01-01

The authors are attempting to set the record straight regarding the sources frequently cited in the literature of the mythical retention chart and the corrupted Dale's Cone. They point out citations that do not actually connect with relevant works; provide correct citations of sources that are often cited erroneously; add references for overlooked…

Equal Educational Opportunity: Hearings Before the Select Committee on Equal Educational Opportunity of the United States Senate, Ninety-Second Congress, First Session on Equal Educational Opportunity, Part 21--Metropolitan Aspects of Educational Inequality. Hearings Held Washington, D.C., November 22, 23, 30, 1971.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Select Committee on Equal Educational Opportunity.

Contents of these hearings include the testimony of the following witnesses, as well as materials appended as pertinent to the hearings: (1) Lloyd Lewis, Jr., Chairman, Dayton City Planning Board and member of the Miami Valley Regional Planning Commission's Housing and Human Resources Advisory Committee; (2) Dale F. Bertsch, Executive Director,…

Reauthorization of the Juvenile Justice and Delinquency Prevention Act: Runaway and Homeless Youth. Hearing before the Subcommittee on Human Resources of the Committee on Education and Labor. House of Representatives, One Hundredth Congress, Second Session on H.R. 1801.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

Text of a Congressional hearing on the reauthorization of the Juvenile Justice and Delinquency Prevention Act is presented in this document. The hearing opens with a statement by Representative Dale E. Kildee, who states this hearing will focus on Title III of the Juvenile Justice and Delinquency Prevention Act which authorizes services for…

Trends in TIMSS Responses over Time: Evidence of Global Forces in Education?

ERIC Educational Resources Information Center

Rutkowski, Leslie; Rutkowski, David

2009-01-01

In this article, the influence of global processes on international mathematics curricula as evidenced by item responses to 3 Trends in International Mathematics and Science Study (TIMSS) administrations (1995, 1999, and 2003) is considered. Based on Dale's (2000) argument, we set out to test 2 plausible impacts of global processes on education.…

Reauthorization Hearings on the Older Americans Act: Part 2. Hearings before the Subcommittee on Human Resources of the Committee on Education and Labor. House of Representatives, One Hundredth Congress (Montpelier, VT, March 28; Flint, MI, April 11; and Algona, IA, April 24, 1987).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

This document contains the text of three hearings held in Vermont, Michigan, and Iowa which constitute part two of the Congressional hearings held to examine reauthorization of the Older Americans Act. Opening statements are included from Representatives Dale Kildee, Tom Sawyer, Fred Grandy, and Thomas Tauke. Testimony is provided from 55…

Revitalizing Curriculum Leadership: Inspiring and Empowering Your School Community. Second Edition

ERIC Educational Resources Information Center

Brubaker, Dale L.

2004-01-01

When we learn, we learn through our own experiences. So when we teach, how do we incorporate our own invaluable life lessons into a state mandated curriculum? Dale Brubaker's "Revitalizing Curriculum Leadership" provides an innovative and liberating solution to this problem. In this updated resource, the author tells why educators need to move…

Today's "Neglected Majority"

ERIC Educational Resources Information Center

Risley, Rod A.

2007-01-01

In 1985, then American Association of Community Colleges (AACC) President Dale Parnell wrote of the "neglected majority," a phrase he coined for the astounding 70 percent of high school graduates who did not plan or aspire to attain baccalaureate degrees. Twenty-two years later, community college and public policy leaders still face the…

After the Cold War: A New Calculus for Science and Security

ERIC Educational Resources Information Center

Wallerstein, Mitchel

2003-01-01

Just more than twenty years ago, the author had the privilege of directing a National Academy of Sciences panel that issued a report entitled "Scientific Communication and National Security," known informally as the Corson Report, after Dale Corson, the panel's chair and president emeritus of Cornell University. Thus, for him, today's discussions…

ED07-0110-12

NASA Image and Video Library

2007-05-24

Two NASA Dryden F/A-18s flown by research pilots Frank Batteas and Nils Larson were captured by photographer Lori Losey from a third F/A-18 flown by Dick Ewers as they flew in tight formation over the desert at Edwards Air Force Base.

Apollo 40th Anniversary History Panel

NASA Image and Video Library

2009-07-15

NASA chief historian Steven Dick, seated left, shares a laugh with panelists John Logsdon, Roger Launius, Michael Neufeld, Cristina Guidi and Craig Nelson, at an Apollo History and Legacy roundtable discussion, Thursday, July 16, 2009, at NASA Headquarters in Washington. Photo Credit: (NASA/Paul E. Alers)

Navy and Marine Corps Medical News. Issue 24

DTIC Science & Technology

2008-12-19

for shipboard surgeries, including hernia repair and eye sur- gery. One of the mission’s most memorable surgeries involved two eight-year...the command in all BU- MED required and tracked popula- tion health metrics, except for one ( cervical cancer screening). Dick concluded, “My

A Revised STONEMAN for Distributed Ada (Trademark) Support Environments.

DTIC Science & Technology

1984-01-01

MA 02154 San Diego, CA 92152 Chuck Waltrip Philip Myers Johns Hopkins University Dave Pasterchik Applied Physics Lab NRVELEX Johns Hopkins Road FLEX...Georgia Tech Atlanta, GA 30332 Reed Kotler Lockheed Missiles & Space Dick Drake 1111 Lockheed Way IBM Sunnyvale, CA 94086 Federal Systems Division 102/075

Dynamic Stark broadening as the Dicke narrowing effect

NASA Astrophysics Data System (ADS)

Calisti, A.; Mossé, C.; Ferri, S.; Talin, B.; Rosmej, F.; Bureyeva, L. A.; Lisitsa, V. S.

2010-01-01

A very fast method to account for charged particle dynamics effects in calculations of spectral line shape emitted by plasmas is presented. This method is based on a formulation of the frequency fluctuation model (FFM), which provides an expression of the dynamic line shape as a functional of the static distribution of frequencies. Thus, the main numerical work rests on the calculation of the quasistatic Stark profile. This method for taking into account ion dynamics allows a very fast and accurate calculation of Stark broadening of atomic hydrogen high- n series emission lines. It is not limited to hydrogen spectra. Results on helium- β and Lyman- α lines emitted by argon in microballoon implosion experiment conditions compared with experimental data and simulation results are also presented. The present approach reduces the computer time by more than 2 orders of magnitude as compared with the original FFM with an improvement of the calculation precision, and it opens broad possibilities for its application in spectral line-shape codes.

Photon Localization and Dicke Superradiance in Atomic Gases

NASA Astrophysics Data System (ADS)

Akkermans, E.; Gero, A.; Kaiser, R.

2008-09-01

Photon propagation in a gas of N atoms is studied using an effective Hamiltonian describing photon-mediated atomic dipolar interactions. The density P(Γ) of photon escape rates is determined from the spectrum of the N×N random matrix Γij=sin⁡(xij)/xij, where xij is the dimensionless random distance between any two atoms. Varying disorder and system size, a scaling behavior is observed for the escape rates. It is explained using microscopic calculations and a stochastic model which emphasizes the role of cooperative effects in photon localization and provides an interesting relation with statistical properties of “small world networks.”

Cooperative bi-exponential decay of dye emission coupled via plasmons.

PubMed

Lyvers, David P; Moazzezi, Mojtaba; de Silva, Vashista C; Brown, Dean P; Urbas, Augustine M; Rostovtsev, Yuri V; Drachev, Vladimir P

2018-06-22

Bi-exponential decay of dye fluorescence near the surface of plasmonic metamaterials and core-shell nanoparticles is shown to be an intrinsic property of the coupled system. Indeed, the Dicke, cooperative states involve two groups of transitions: super-radiant, from the most excited to the ground states and sub-radiant, which cannot reach the ground state. The relaxation in the sub-radiant system occurs mainly due to the interaction with the plasmon modes. Our theory shows that the relaxation leads to the population of the sub-radiant states by dephasing the super-radiant Dicke states giving rise to the bi-exponential decay in agreement with the experiments. We use a set of metamaterial samples consisting of gratings of paired silver nanostrips coated with Rh800 dye molecules, having resonances in the same spectral range. The bi-exponential decay is demonstrated for Au\\SiO 2 \\ATTO655 core-shell nanoparticles as well, which persists even when averaging over a broad range of the coupling parameter.

Gravitation experiments at Stanford. [using general relativity theory

NASA Technical Reports Server (NTRS)

Lipa, J. A.

1980-01-01

The experimental situation in post-Newtonian gravitation is briefly reviewed in order to reexamine the extent to which experiment supports or refutes general relativity. A description is given of the equivalence principle project, the gyroscope experiment, and the search for gravity waves. It is noted that even though some doubt has been cast on the value of the perihelion advance and the gravitational redshift as precise tests of general relativity in the past few years, many competing theories have been ruled out; in particular, the results from the Viking mission significantly reduce the credibility of the Brans-Dicke theory (Brans and Dicke, 1961). The dimensionless constant omega in this theory is now forced to exceed 50, while the value originally proposed was 6 (omega being infinity in general relativity). It is noted that the gyro experiment described is capable of putting much tighter limits on this parameter, and together with the other experiments in progress will help place gravitational theory on a firmer experimental footing.

High Frequency PIN-Diode Switches for Radiometer Applications

NASA Technical Reports Server (NTRS)

Montes, Oliver; Dawson, Douglas E.; Kangaslahti, Pekka; Reising, Steven C.

2011-01-01

Internally calibrated radiometers are needed for ocean topography and other missions. Typically internal calibration is achieved with Dicke switching as one of the techniques. We have developed high frequency single-pole double-throw (SPDT) switches in the form of monolithic microwave integrated circuits (MMIC) that can be easily integrated into Dicke switched radiometers that utilize microstrip technology. In particular, the switches we developed can be used for a radiometer such as the one proposed for the Surface Water and Ocean Topography (SWOT) Satellite Mission whose three channels at 92, 130, and 166 GHz would allow for wet-tropospheric path delay correction near coastal zones and over land. This feat is not possible with the current Jason-class radiometers due to their lower frequency signal measurement and thus lower resolution. The MMIC chips were fabricated at NGST using their InP PIN diode process and measured at JPL using high frequency test equipment. Measurement and simulation results will be presented.

The Aquarius Ocean Salinity Mission High Stability L-band Radiometer

NASA Technical Reports Server (NTRS)

Pellerano, Fernando A.; Piepmeier, Jeffrey; Triesky, Michael; Horgan, Kevin; Forgione, Joshua; Caldwell, James; Wilson, William J.; Yueh, Simon; Spencer, Michael; McWatters, Dalia;

Obtaining a W state from a Greenberger-Horne-Zeilinger state via stochastic local operations and classical communication with a rate approaching unity.

PubMed

Yu, Nengkun; Guo, Cheng; Duan, Runyao

2014-04-25

We introduce a notion of the entanglement transformation rate to characterize the asymptotic comparability of two multipartite pure entangled states under stochastic local operations and classical communication (SLOCC). For two well known SLOCC inequivalent three-qubit states |GHZ⟩=(1/2)(|000⟩+|111⟩) and |W⟩=(1/3)(|100⟩+|010⟩+|001⟩), we show that the entanglement transformation rate from |GHZ⟩ to |W⟩ is exactly 1. That means that we can obtain one copy of the W state from one copy of the Greenberg-Horne-Zeilinger (GHZ) state by SLOCC, asymptotically. We then apply similar techniques to obtain a lower bound on the entanglement transformation rates from an N-partite GHZ state to a class of Dicke states, and prove the tightness of this bound for some special cases which naturally generalize the |W⟩ state. A new lower bound on the tensor rank of the matrix permanent is also obtained by evaluating the tensor rank of Dicke states.

FRC Compression Heating Experiment (FRCHX) at AFRL

DTIC Science & Technology

2007-06-01

Air Force Research Laboratory ( AFRL ) and Los Alamos National Laboratory (LANL) have been... Air Force Research Laboratory , Directed Energy Directorate, 3550 Aberdeen Avenue SE Kirtland AFB, NM 87117-5776 USA 8. PERFORMING ORGANIZATION REPORT...Matt Domonkos, Don Gale, Bernard Martinez, Jerry Parker, Dale Ralph, Ed Ruden, and Wayne Sommars Air Force Research Laboratory , Directed

Supreme Court Roundup: Review of 1999-2000 Term.

ERIC Educational Resources Information Center

Williams, Charles F.

2000-01-01

Discusses three cases that occurred during the 1999-2000 Supreme Court term: (1) Santa Fe Independent School District v. Doe where public prayers are barred at football games; (2) Boy Scouts v. Dale where a gay scoutmaster was dismissed; and (3) Mitchell v. Helms that questioned the lending of computers to religious schools. (CMK)

Enhancing the Professionalism of Purchasing Agents (GS 1105s) within the Department of the Army.

DTIC Science & Technology

1987-09-01

automated small purchase process offers distinct advantages, as well as cost savings in both time and money , for activities with a large volume of small...resident) Massasoit Northeast $1,888 $6,400 Boston, MA Broward Southeast 1,327 2,765 Ft. Lauder - dale, FL Rock Valley Midwest 1,728 7,552 Rockford, IL De

A Tale of Two Libraries: How Two Library Media Centers Seamlessly Integrate Curriculum, Information Literacy, and Technology

ERIC Educational Resources Information Center

Gold, Stephanie

2005-01-01

The author discusses how two library media centers seamlessly integrate curriculum, information literacy, and technology. Dale Hodges is a library chairperson, a role that carries clout in the William Floyd School District, where the library is a full-fledged department. Located on Long Island in New York, the district has eight schools, more than…

KSC-03PD-2077

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Dale Jarrett gets a close look at the orbiter Endeavour. Jarrett and other drivers Jimmie Johnson and Ryan Newman were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

KSC-03PD-2076

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Ryan Newman gets a close look at the orbiter Endeavour. Newman and other drivers Jimmie Johnson and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

KSC-03PD-2078

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Jimmie Johnson gets a close look at the orbiter Endeavour. Johnson and other drivers Ryan Newman and Dale Jarrett were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

Decision Making: An Imperative for Language Learning; Highlights of the Annual Language Arts Conference of Memphis State University (7th, Memphis, June 12-14, 1974).

ERIC Educational Resources Information Center

Rakes, Thomas A., Ed.; Brotherton, Sophia, Ed.

This document presents nine papers which were originally prepared for the 1974 Annual Language Arts Conference at Memphis State University. Included are: "Proxemics" by Dale F. Baltus; "Reading and Study Skill Hints for Intermediate and Secondary Teachers" by Stuart W. Bray; "A Reading Game License" by Flora C. Fowler; "Teach Kids to Think" by…

Progress in the paddy field

USDA-ARS?s Scientific Manuscript database

Rice feeds around 3.5 billion people and provides a significant proportion of calories for many of the world’s poor. The USA is a major producer and exporter of rice. The USDA/ARS Dale Bumpers National Rice Research Center (DBNRRC) is located in the heart of the southern USA rice growing region in A...

Encounters with the Human Heart: An Interview with John Stone.

ERIC Educational Resources Information Center

Flynn, Dale Bachman

1995-01-01

Interviews Dale Bachman Flynn, professor of cardiology and dean of admissions and student affairs at Emory University School of Medicine, about his "In the Country of Hearts," a collection of stories about his medical practice. Discusses Flynn's personal life; his life-long practice of writing; and his interest in the intersections among medicine,…

Ensuring Effective Governance. New Directions for Community Colleges, Number 49.

ERIC Educational Resources Information Center

Deegan, William L., Ed.; Gollattscheck, James F., Ed.

1985-01-01

This collection of articles addresses major questions of community college governance and highlights some of the changes that have taken place in governance over the past decade. The issue contains: (1) "State Power in a New Era: Threats to Local Authority," by Dale Tillery and James L. Wattenbarger; (2) "Power on the Periphery: Faculty and…

Treatment, Time, and Achievement: Do Searching Modes of Study Facilitate Learning?

ERIC Educational Resources Information Center

Rice, Marion J.

This report is a synthesis of five research studies comparing the facilitative effects on learning of searching and reception modes of study. The following five studies are discussed: (1) J.R. Dale, the effects on achievement of using the forced inferential response mode in an intermediate grade population-geography unit; (2) D.D. Dumbleton, the…

The Cost and Availability of Liability Insurance for Small Business. Hearings before the Committee on Small Business. United States Senate, Ninety-Ninth Congress, Second Session on the Cost and Availability of Liability Insurance for Small Business. Part 2 (February 20 and 21, 1986).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Committee on Small Business.

The text of a Senate Committee on Small Business hearing on the cost and availability of liability insurance for small business is presented in this document. The crisis faced by small business with skyrocketing insurance rates is described in statements by Senators Lowell Weicker, Jr., Robert Kasten, Jr., Dale Bumpers, Paul Trible, Jr., James…

Looking Forward to the Year 2000: Public Policy and Philanthropy. Working Papers, Spring Research Forum (San Francisco, California, March 17-18, 1988).

ERIC Educational Resources Information Center

Independent Sector, Washington, DC.

Forty-six working papers for presentation at a research forum on public policy and philanthropy are presented. Thirteen sections include the following topics: (1) looking forward to the year 2000: public policy and philanthropy (e.g. "Rationales for Tax Exemption," by Harvey P. Dale); (2) shifting boundaries among the sectors (e.g. "The Shifting…

Fiscal Year 2007 House Budget Hearing

NASA Image and Video Library

2006-02-16

U.S. Rep. Vernon J. Ehlers , R-Mich., left, talks with NASA Administrator Michael Griffin, right, as NASA Deputy Administrator Shana Dale looks on prior to the start of a hearing before the House Science & Technology Committee regarding NASA's FY 2007 budget request, Thursday, Feb., 16, 2006, in Washington. Photo Credit: (NASA/Bill Ingalls)

Writing beyond Borders: Rethinking the Relationship between Composition Studies and Professional Writing

ERIC Educational Resources Information Center

Bay, Jennifer

2010-01-01

This essay attempts to forge connections between the fields of Composition Studies and professional writing. I argue that a stronger relationship would foster more sustainable ties in light of the corporate university and global capitalism. I point to three of what Dale Jacobs calls threshold spaces, sites where we can foster a culture of…

Using Denatured Egg White as a Macroscopic Model for Teaching Protein Structure and Introducing Protein Synthesis for High School Students

ERIC Educational Resources Information Center

Correia, Paulo R. M.; Torres, Bayardo B.

2007-01-01

The success of teaching molecular and atomic phenomena depends on the didactical strategy and the media selection adopted, in consideration of the level of abstraction of the subject to be taught and the students' capability to deal with abstract operations. Dale's cone of experience was employed to plan three 50-minute classes to discuss protein…

Is It that Difficult to Find a Good Preference Order for the Incremental Algorithm?

ERIC Educational Resources Information Center

Krahmer, Emiel; Koolen, Ruud; Theune, Mariet

2012-01-01

In a recent article published in this journal (van Deemter, Gatt, van der Sluis, & Power, 2012), the authors criticize the Incremental Algorithm (a well-known algorithm for the generation of referring expressions due to Dale & Reiter, 1995, also in this journal) because of its strong reliance on a pre-determined, domain-dependent Preference Order.…

The Neglected Majority--Revisited

ERIC Educational Resources Information Center

Beebe, Anthony; Walleri, R. Dan

2005-01-01

Dale Parnell's "The Neglected Majority" is one of the most influential works by a community college leader in the history of the community college movement. This essay explores the impact of "The Neglected Majority" since publication in 1985 and includes an interview with Parnell that assesses his perspective of the nearly 20 years following his…

Estimating the Return to College Selectivity over the Career Using Administrative Earnings Data. NBER Working Paper No. 17159

ERIC Educational Resources Information Center

Dale, Stacy; Krueger, Alan B.

2011-01-01

We estimate the monetary return to attending a highly selective college using the College and Beyond (C&B) Survey linked to Detailed Earnings Records from the Social Security Administration (SSA). This paper extends earlier work by Dale and Krueger (2002) that examined the relationship between the college that students attended in 1976 and the…

Planning for the Neglected Majority

ERIC Educational Resources Information Center

Beebe, Anthony E.

2007-01-01

The "Neglected Majority" represents that 70 to 80 percent of our nation's population who, for a myriad of reasons, do not hold baccalaureate degrees. In 1985, Dale Parnell, Ed.D., described this "Neglected Majority" for the first time in one of the most influential works in the history of the community college movement. This…

Generation of Referring Expressions: Assessing the Incremental Algorithm

ERIC Educational Resources Information Center

van Deemter, Kees; Gatt, Albert; van der Sluis, Ielka; Power, Richard

2012-01-01

A substantial amount of recent work in natural language generation has focused on the generation of "one-shot" referring expressions whose only aim is to identify a target referent. Dale and Reiter's Incremental Algorithm (IA) is often thought to be the best algorithm for maximizing the similarity to referring expressions produced by people. We…

Reauthorization of the Juvenile Justice and Delinquency Prevention Act: Runaway and Homeless Youth. Hearing before the Subcommittee on Human Resources of the Committee on Education and Labor. House of Representatives, One Hundredth Congress, Second Session on H.R. 1801 (Akron, Ohio).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

Text of a Congressional hearing on the reauthorization of the Juvenile Justice and Delinquency Prevention Act, held in Akron, Ohio, is presented in this document. The hearing opens with a statement by Representative Dale E. Kildee, who states this hearing will focus on Title III of the Juvenile Justice and Delinquency Prevention Act which…

Chihuly-Inspired Balloon Sculptures

ERIC Educational Resources Information Center

Morice, Erin

2009-01-01

When the glass artist Dale Chihuly exhibited his work at the Missouri Botanical Garden, the author took a class of fourth-grade students to view the artist's extraordinary sculptures. Just as the author predicted, the students were in awe of Chihuly's organic three-dimensional sculptures. Before taking the field trip to the Missouri Botanical…

78 FR 71611 - Ocean Transportation Intermediary License Revocations and Terminations

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-29

...: September 13, 2013. Reason: Failed to maintain a valid bond. License No.: 17895NF. Name: Maritime... revoked or terminated for the reason shown pursuant to section 19 of the Shipping Act of 1984 (46 U.S.C.... Address: 650 N. Edgewood Avenue, Wood Dale, IL 60191. Date Revoked: October 4, 2013. Reason: Failed to...

78 FR 53456 - Ocean Transportation Intermediary License Revocations and Terminations

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-29

... revoked or terminated for the reason shown pursuant to section 19 of the Shipping Act of 1984 (46 U.S.C.... Address: 1440 N. Mittel, Suite E, Wood Dale, IL 60191. Date Revoked: June 1, 2013. Reason: Voluntary..., Oakland, CA 94521. Date Revoked: June 14, 2013. Reason: Failed to maintain a valid bond. License No...

Readability of Brochures Produced by State of Florida.

ERIC Educational Resources Information Center

Christ, William G.; Pharr, Paula

1980-01-01

A study of the readability of governmental pamphlets produced by the State of Florida, based on the use of the Flesch Reading Ease Formula and the Dale-Chall Formula, suggests that if a seventh or eighth grade readability level is considered an appropriate standard for public information brochures, the brochures tested may be too complex…

KSC-03pd2077

NASA Image and Video Library

2003-07-02

KENNEDY SPACE CENTER, FLA. - NASCAR driver Dale Jarrett gets a close look at the orbiter Endeavour. Jarrett and other drivers Jimmie Johnson and Ryan Newman were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Jimmie Johnson tries out a seat of another vehicle known for speed: the orbiter Endeavour. Johnson and other drivers Dale Jarrett and Ryan Newman were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Dale Jarrett tries out a seat of another vehicle known for speed: the orbiter Endeavour. Jarrett and other drivers Jimmie Johnson and Ryan Newman were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

NASCAR drivers pose in Endeavour

NASA Image and Video Library

2003-07-02

NASCAR driver Ryan Newman tries out a seat of another vehicle known for speed: the orbiter Endeavour. Newman and other drivers Dale Jarrett and Jimmie Johnson were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.

Full report of laser doppler velocimetry (Het-V) data, results , and analysis for pRad shot 0632

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tupa, Dale; Tainter, Amy Marie

This was a collaborative shot with AWE investigators Paul Willis-Patel, David Bell, Seth Grant, David Tarr, and James Richley. The shot was assembled in Los Alamos, after which David Bell set up the probe holder and finalized the alignment. The probe holder location and configuration was modified from previous years to make room for the laser illuminated visible imaging diagnostic. The LANL pRad PDV team was Dale Tupa, Amy Tainter, and Patrick Medina. This shot had three PDV probes: one aimed at the center, one aimed at a feature, one aimed at the reverse side of the shot. The shotmore » also had 9 points of a spectroscopy diagnostic. The pRad team helped set up and field the spectroscopy, but did not help with any data analysis. (The support documentation for the PDV results includes a timing map for the spectroscopy.) Please direct questions on the velocimetry to Dale Tupa or Amy Tainter. The shot radiographs were classified, but the data from the optical diagnostics are not.« less

Development of a Semi-Autonomous Underwater Vehicle for Intervention Missions

DTIC Science & Technology

2000-10-30

Alexander Malahoff of the University of Hawaii, Dr. Homayoun Seraji of the Jet Propulsion Laboratory, and Mr. Dick Turlington of the Pacific Missile...AUV. The angular orientation sensor is housed within a 1-inch OD cylindrical pressure vessel (6000-m capable) made low- Fe grade-2 titanium. For a

Beliefs and Attitudes of Secondary Agriculture Teachers about Global Agriculture Issues

ERIC Educational Resources Information Center

Hurst, Sara D.; Roberts, T. Grady; Harder, Amy

2015-01-01

The purpose of this study was to explore the beliefs and attitudes of secondary agriculture teachers regarding global agricultural issues. A randomized national sample of 417 teachers were surveyed using a modified version of the International Agricultural Awareness and Understanding Survey (Wingenbach, Boyd, Lindner, Dick, Arispe, & Haba,…

Vaxfectin (registered trademark) Enhances Both Antibody and In Vitro T Cell Responses to Each Component of a 5-gene Plasmodium falciparum Plasmid DNA Vaccine Mixture Administered at Low Doses

DTIC Science & Technology

2010-01-01

received intramus- cular injections in the tibialis anterior muscle pDNA formu lated in PBS or Vaxfectin® using insulin syringes (0.3 ml: Becton Dick... phosphatidylcholine (DSPC) liposomes in Leishmania vaccine stud- ies and report long-term immunity in mice when the adjuvant was added with the

An Interactive Computer-Based Training Program for Beginner Personal Computer Maintenance.

ERIC Educational Resources Information Center

Summers, Valerie Brooke

A computer-assisted instructional program, which was developed for teaching beginning computer maintenance to employees of Unisys, covered external hardware maintenance, proper diskette care, making software backups, and electro-static discharge prevention. The procedure used in developing the program was based upon the Dick and Carey (1985) model…

The Evolution of Soviet Requirements for Naval Forces - Solving the Problems of the Early 1960s.

DTIC Science & Technology

1982-12-01

the military sector ) or more than that response (additional factors having served as stimuli). And even where the magnitude of expenditures for...34Alternative Approaches to Attrition Utgoff. Kathy and Thaler, Dick, "The Economicos of Multi Year Minagemont," 30 pp., Jan 1982 (Iontracting," 47 pp

On quantum integrable models related to nonlinear quantum optics. An algebraic Bethe ansatz approach

NASA Astrophysics Data System (ADS)

Jurčo, Branislav

1989-08-01

A unified approach based on Bethe ansatz in a large variety of integrable models in quantum optics is given. Second harmonics generation, three-boson interaction, the Dicke model, and some cases of four-boson interaction as special cases of su(2)⊕su(1,1)-Gaudin models are included.

Utilization of Forward Error Correction (FEC) Techniques With Extensible Markup Language (XML) Schema-Based Binary Compression (XSBC) Technology

DTIC Science & Technology

2004-12-01

NY 7. Erik Chaum NUWC Newport, RI 8. David Bellino NPRI Newport, RI 9. Dick Nadolink NUWC Newport, RI 10. VADM Roger Bacon (Ret...Science Advisor Pearl Harbor, HI 16. LT Andrew Hurvitz, USN FNMOC Monterey, CA 17. ENS Darin Keeter, USN FNMOC Monterey, CA 18. CAPT David

Information Technology and Disabilities, 1997.

ERIC Educational Resources Information Center

McNulty, Tom, Ed.

1997-01-01

Articles published during 1997 include: "The Multi-Disability Workstation for Small Libraries" (Dick Banks and Steve Noble); "Talking Books: Toward a Digital Model" (John Cookson and others); "World Wide Access: Focus on Libraries" (Sheryl Burgstahler); "The Virtual Library: Collaborative Data Exchange and Electronic Text Delivery" (Steve Noble);…

Inquiry-Oriented Learning Material to Increased General Physics Competence Achievement

ERIC Educational Resources Information Center

Sinuraya, Jurubahasa

2016-01-01

This study aims to produce inquiry-oriented general physics learning material to improve student learning outcome. Development steps of learning materials were adapted from the design model of Dick and Carey. Stages of development consists of three phases: planning, development, and formative evaluation and revision. Implementation of formative…

Pedagogical Usability of the Geometer's Sketchpad (GSP) Digital Module in the Mathematics Teaching

ERIC Educational Resources Information Center

Nordin, Norazah; Zakaria, Effandi; Mohamed, Nik Rahimah Nik; Embi, Mohamed Amin

2010-01-01

Teacher played an important role in ascertaining effective teaching of mathematics. The objective of this paper was to investigate the pedagogical usability of a digital module prototype that integrated a dynamic geometry software, Geometer's Sketchpad (GSP) in mathematics teaching. The prototype was developed based on Reiser's and Dick's…

A Specification Technique for the Common APSE (Ada Programming Support Environments) Interface Set.

DTIC Science & Technology

1984-04-01

NOSC So fTech Code 8322 460 Totten Pond Road San Diego, CA 92152 Waltham, MA 02154 Philip Myers Chuck Waltrip Dave Pasterchik Johns Hopkins University...06856 Georgia Tech Atlanta, GA 30332 Reed Kotler Lockheed Missiles & Space Dick Drake 1111 Lockheed Way IBM Sunnyvale, CA 94086 Federal Systems

We Remember 2015 - A Video Memorial

NASA Image and Video Library

2015-06-10

Video tribute to 12 members of the NASA Astrobiology community who passed away since the 2012 AbSciCon meeting. Tributes to: Dick Holland, Bob Wharton, Carl Woese, David McKay, Tom Wdowiak, John Billingham, Bishun Khare, Tom Pierson, Colin Pillinger, Katrina Edwards, Martin Brasier and Alberto Behar.

Linearized modified gravity theories with a cosmological term: advance of perihelion and deflection of light

NASA Astrophysics Data System (ADS)

Özer, Hatice; Delice, Özgür

2018-03-01

Two different ways of generalizing Einstein’s general theory of relativity with a cosmological constant to Brans–Dicke type scalar–tensor theories are investigated in the linearized field approximation. In the first case a cosmological constant term is coupled to a scalar field linearly whereas in the second case an arbitrary potential plays the role of a variable cosmological term. We see that the former configuration leads to a massless scalar field whereas the latter leads to a massive scalar field. General solutions of these linearized field equations for both cases are obtained corresponding to a static point mass. Geodesics of these solutions are also presented and solar system effects such as the advance of the perihelion, deflection of light rays and gravitational redshift were discussed. In general relativity a cosmological constant has no role in these phenomena. We see that for the Brans–Dicke theory, the cosmological constant also has no effect on these phenomena. This is because solar system observations require very large values of the Brans–Dicke parameter and the correction terms to these phenomena becomes identical to GR for these large values of this parameter. This result is also observed for the theory with arbitrary potential if the mass of the scalar field is very light. For a very heavy scalar field, however, there is no such limit on the value of this parameter and there are ranges of this parameter where these contributions may become relevant in these scales. Galactic and intergalactic dynamics is also discussed for these theories at the latter part of the paper with similar conclusions.

The Classic Readability Studies

ERIC Educational Resources Information Center

DuBay, William H., Ed.

2007-01-01

Early in the 20th century, educators began looking for scientific methods for matching texts with readers. Some of the best minds in education dedicated themselves to this task, including Edward L. Thorndike, William S. Gray, Ralph Tyler, Edgar Dale, Irving Lorge, and Jeanne S. Chall. The purpose of this book is to bring students of reading into…

78 FR 78477 - Qualification of Drivers; Exemption Applications; Vision

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-26

...) Duane C. Conway (NV) Ronald L. Cote (NV) Brian W. Curtis (IL) Albion C. Doe, Sr. (NH) Robin C. Duckett.... Gartin (OH) Dale L. Giardine (PA) Leslie W. Good (OR) Chester L. Gray (TX) Christian L. Gremillion (LA.... Weinert (NY) Joseph A. Wells (IL) Don S. Williams (VA) Robert L. Williams, Jr. (MS) Kevin W. Wunderlin (OH...

Yesterday's Trash Makes Tomorrow's "Glass"

ERIC Educational Resources Information Center

Wayne, Dale

2010-01-01

In this article, the author describes a glass art project inspired by Dale Chihuly. This project uses two-liter plastic soda bottles which are cut apart and trimmed. Applying heat using a hair dryer, the plastic curls and takes an uneven blown-glass quality. The "glass" is then painted using acrylic paint. (Contains 2 resources and 1 online…

How Could Foreign Teachers in Turkey Pronounce Their Turkish Students' Names Correctly

ERIC Educational Resources Information Center

Yurtbasi, Metin

2016-01-01

Most of us have read Dale Carnegie's classic "How to make friends and influence people" in which he reveals the secret of human psychology: giving people the "feeling of importance" that they seek. He claims in that work that people feel more friendly toward those who allows them this feeling by caring about them and showing…

Invasive Species as Ecological Threat: Is Restoration an Alternative to Fear-based Resource Management?

Treesearch

Paul H. Gobster

2005-01-01

Invasive species is a hot topic in the USDA Forest Service these days. Along with wildfire, land conversion and unmanaged recreation, Chief Dale Bosworth has called invasive species one of the `Four Threats` needing the attention of Forest Service land managers and researchers (USDA Forest Service 2004). My unit of the Forest Service, the North Central Research...

Object-Oriented Software Model for Battlefield Signal Transmission and Sensing

DTIC Science & Technology

2009-12-01

21 Platform positioning and problem viability ...........................................................................23 7 Environmental ...The graphic on the title page of this report was created by Dr. Dale R. Hill (ERDC-CRREL). The authors thank Dr. George G. Koenig of ERDC-CRREL’s...Background The performance and utility of battlefield and homeland security sensors depends on many complex factors, both environmental and mission

'people queued for hours to see him'.

PubMed

Carlisle, Daloni

2012-05-30

I met Khalil Dale (pictured) in 1995 when writing about the International Committee of the Red Cross (ICRC) campaign to end the use of landmines. I spent a week alongside him, reporting on his work for the ICRC in northern Afghanistan. Khalil was a gentle, quiet man who left a big impression on everyone who met him.

Should We Be Teaching the Historical Critical Method?

ERIC Educational Resources Information Center

Adam, A. K. M.; Ascough, Richard; Gravett, Sandra; Hunt, Alice; Martin, Dale; Wimberly, Edward; Yang, Seung Ai

2009-01-01

This manuscript is an edited transcript of a panel discussion held at a Society of Biblical Literature conference (Boston, Massachusetts, November 22 to 24, 2008). Alice Hunt begins the discussion by summarizing the content and significance of a new book by Dale Martin, "The Pedagogy of The Bible" (Westminster John Knox Press, 2008) in which he…

KSC-03PD-2083

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. NASCAR driver Ryan Newman tries out a seat of another vehicle known for speed: the orbiter Endeavour. Newman and other drivers Dale Jarrett and Jimmie Johnson were on a tour of KSC. The men are scheduled to drive in the Pepsi 400 auto race being held July 5 at the Daytona International Speedway, Daytona Beach.