17,692 research outputs found
Ray Brown, Jeff Hamilton, and Benny Green at Bermuda Onion Club
No full textRay Brown, Jeff Hamilton, and Benny Green at Bermuda Onion Club, Toronto, September 1992. 11 x 14 inch black and white photograph by Barry Thomson (Toronto, Ontario)
[Letter from Alex Bradford to Lieutenant and Mrs. Ray Starner - November 4, 1940]
No full textLetter from Alex Bradford to Lieutenant and Mrs. Ray Starner describing the the current state of affairs that the author was experiencing, including: the London blitz, the moral of the troops on the ground, and the collective company of men opposing the Nazi regime
Children, Armed Conflict, and Genocide: Applying the Law of Genocide to the Recruitment and Use of Children in Armed Conflict
No full textThis paper shows that the use of child soldiers in armed conflict has the potential to be considered as genocide. A brief background of genocide is presented prior to the analysis. Part I of the analysis will discuss three issues: first, the modern understanding of genocide and the substantive areas of law that govern it; second, the definition of “child” within the international arena as it relates to child soldiering; third, a discussion to determine if children can constitute a “group” in the context of the law of genocide.
Part II provides a discussion elaborating on Part I, then analyzes the five disjunctive elements of genocide. A general rule will be synthesized for each element. General rules are synthesized from judicial decisions interpreting the genocide regime, soft law, and scholarly writings. Each element includes an analysis to determine applicability of the element as it relates to child soldiers
The student's guide to completing an author study
No full textThe 'Student's guide to completing an author study' emerged during the early development of the school library resource center program at Glen Stewart Elementary School in Stratford Canada on Prince Edward Island. This research process centered on an author study, with direct teaching and clear assignment. The resulting model has been adapted to various grade levels and subject areas in different schools.Source type: Electronic(1)http://proquest.umi.com/pqdweb?did=49237063&Fmt=7&clientId=65345&RQT=309&VName=PQ
Active X-ray optics for the next generation of X-ray space telescopes
No full textDescribed within is the design, manufacture, metrology and X-ray testing of an active X-ray
prototype intended for the next generation of X-ray telescopes. One of the challenges faced by
the X-ray telescope community is how to combine high resolution and high sensitivity into one
system, as weight limitations place constraints on the optics that can be launched. Therefore the
mandate of the active X-ray prototype is to provide high sensitivity through the ability of the optics
to be nested and to deliver high angular resolution through the active control of the optic’s form.
Piezoelectric unimorph actuators provide the active component: it is intended that they will correct
for figure errors within the optic and therefore increase the angular resolution capability.
The prototype’s design is based upon an ellipsoidal segment which provides point-to-point
focussing of an X-ray source. The prototype itself is composed of an electroformed nickel optic
where the non-reflective surface is populated with 30 piezoelectric actuators and it is the production
of the prototype that is the core of the presented research. Metrology of the actuators’ influence
functions is presented and highlight the prototype’s ability to deform its optic surface by microns.
In addition, the measured influence functions are compared against finite element models and a
distinct similarity between the functions is observed.
The prototype was tested at an X-ray beamline facility in November 2008 and the results
showed the prototype’s ability to correct the optic to achieve an improved angular resolution: from
0.786 arc-minutes to 0.686 arc-minutes in terms of full width half maximum. Finally, difficulties
in the manufacture of the prototype and X-ray testing shall be presented alongside future work in
conclusion to this thesis
Author, Geraldine Brooks at the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009 [picture] /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author, Geraldine Brooks during her visit to the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Induction of planar chirality in formation of (?(5):?(1)-1-(1-cyclohexyl-2-(diphenylphosphino)ethyl)indenyl)-carbonylrhodium and (?(5):?(1)-1-(2-phenyl-2-(diphenylphosphino)ethyl)indenyl)carbonylrhodium
No full textThe enantiopure bidentate indenyl-phosphine ligands (1S)-[2-(3H-inden-1-yl)-1-phenylethyl] diphenylphosphine (9) and [(2R)-2-cyclohexyl-2-(3H-inden-1-yl)ethyl]diphenylphosphine (18) were synthesized in 20% yield and three steps from (R)-styrene oxide and in 61% yield and four steps from vinylcyclohexane, respectively. In both cases ring opening of a spirocyclopropane-1,1'-indene with potassium diphenylphosphide was a key step. Addition of the lithium salts of 9 and 18 to [Rh(? -Cl)(CO)(2)](2) gave (?(5):?(1)-indenyl-CH2CH(Ph)PPh2)RhCO and (?(5):?(1)-indenyl-CH(Cy)CH2PPh2)RhCO as 75:25 and 78:22 mixtures of diastereoisomers, from which the major complexes were readily obtained by crystallization. The chiral centers in the linking chain ? and ? to the indenyl ring had thus induced good planar chirality of the complexed indenyl moiety. Both complexes were characterized by X-ray crystallography
Interview with Barry C. Barish
No full textInterview in five sessions, May-July 1998, with Barry C. Barish, Linde Professor of Physics emeritus and director of LIGO [Laser Interferometer Gravitational-Wave Observatory] 1994-2005.
Recalls undergraduate education, Berkeley; graduate work on Lawrence Radiation Laboratory cyclotron; postdoc work on bevatron. Meets Alvin Tollestrup, comes to Caltech as postdoc, 1963. At Brookhaven National Laboratory. At Stanford Linear Accelerator Center with Henry Kendall, Richard Taylor, and Jerome Friedman. With Frank Sciulli, proposes neutrino experiment for Fermilab; work on tau leptons at SLAC. Move to Cornell.
Discusses history of magnetic monopoles and his work on monopoles at Caltech in 1980s. Discusses history of SSC [Superconducting Super Collider]; problems with Standard Model of Particle Physics; Aspen conferences to plan SSC; selection of Texas site. Involvement of Samuel C. C. Ting. Devises SSC experiment, with W. J. Willis. SSC's defeat in Congress (1993). Discusses his work in Italy on monopoles, in Gran Sasso tunnel. MACRO [Monopole Astrophysics Cosmic Ray Observatory] detector.
Discusses history of LIGO. Bar detector experiments of Joseph Weber. Initial meetings at Caltech. Hiring of Ronald W. P. Drever. Rochus E. (Robbie) Vogt as head, 1987. Disastrous technical review and project review, 1992-93. He takes project over from Vogt in February 1994. Discusses problems he encountered and lack of evolution between 1989 and 1994. Discusses LIGO's technical difficulties and evolution of its organizational structure. LIGO Laboratory and LIGO (construction) Project. Establishment of LIGO Scientific Collaboration.
Comments on Caltech; disinclination to serve on committees, enjoyment of teaching. Recollections of Richard Feynman. Influence of Tollestrup and Taylor
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