On Deriving Space-Time From Quantum Observables and States

We prove that, under suitable assumptions, operationally motivated data completely determine a space-time in which the quantum systems can be interpreted as evolving. At the same time, the dynamics of the quantum system is also determined. To minimize technical complications, this is done in the example of three-dimensional Minkowski space.Comment: 19 pages, to appear in Communications in Mathematical Physics; minor corrections mad

A study of manual control methodology with annotated bibliography

Manual control methodology - study with annotated bibliograph

The Energetics and Mass-loss of Mrk33

We present ROSAT HRI X-ray data and optical imaging of the important dwarf starburst Markarian 33. We find an extended, complex, shell-like morphology in the X-ray emission, with an extent of 2.3 x 1.9kpc, coincident with the bright star-forming regions at the centre of the galaxy. The physical extent of this X-ray emission from Mrk 33 is very similar to the observed Halpha emission, and suggests that the bulk of the X-ray emission is coming from an expanding superbubble. We estimate the age and mass of Mrk 33's starburst to be 5.8 Myr and 6.9 x 10^{6} Msolar respectively with the energy injection rate in the central regions of the galaxy being 10^{41} erg/s, while the associated mass-loss rate from the star-forming regions is estimated to be 0.2 Msolar/yr. We suggest that the X-ray emission is predominantly powered by starburst type activity and argue that a blowout in the form of a galactic wind is the most likely fate for Mrk 33 resulting in the loss of most of the galaxy's metal-enriched material and a small fraction (<1 per cent) of the ISM.Comment: 13 pages, 6 figures, accepted for publication in MNRA

English Literacy Development for English Language Learners: Does Spanish Instruction Promote or Hinder?

In this brief, the authors consider whether instruction in a child\u27s native language (particularly Spanish) hinders or promotes learning of literacy in English. The authors conduct a four-step process for identifying research on this topic, examining this literature, and then determining the answer to this clinical question. The results suggest that supporting a child\u27s home/native language promotes rather than hinders development of English literacy skills

Theoretical and material studies on thin-film electroluminescent devices

A theoretical study of resonant tunneling in multilayered heterostructures is presented based on an exact solution of the Schroedinger equation under the application of a constant electric field. By use of the transfer matrix approach, the transmissivity of the structure is determined as a function of the incident electron energy. The approach presented is easily extended to many layer structures where it is more accurate than other existing transfer matrix or WKB models. The transmission resonances are compared to the bound state energies calculated for a finite square well under bias using either an asymmetric square well model or the exact solution of an infinite square well under the application of an electric field. The results show good agreement with other existing models as well as with the bound state energies. The calculations were then applied to a new superlattice structure, the variablly spaced superlattice energy filter, (VSSEP) which is designed such that under bias the spatial quantization levels fully align. Based on these calculations, a new class of resonant tunneling superlattice devices can be designed

Nurses Alumni Association Bulletin, Fall 1999

1999-2000 Meeting Dates Calendar 2000 Annual Luncheon-Meeting Notice Fall Social Officers and Committee Chairs Bulletin Publication Committee The President\u27s Message Treasurer\u27s Report News About Our Graduates History of The Nurses Relief Fund Nurses Wear White Memories of My Nurse Training Days Scholarship Funds At Work Second Janet C. Hindson Award Rib Ticklers Happy Birthday Fiftieth Anniversary Resume Alumni Association Meetings Alumni Office News Committee Reports Bulletin Nominating Relief Fund Scholarship Social Development Luncheon Photos In Memoriam, Names of Deceased Graduates Class News Janet C. Hindson Memorial Award (How to Submit Names) Scholarship Fund Application Certification Reimbursement Application Relief Fund Application Pins, Transcripts, Class Address List, Change of Address Forms Campus Ma

Nurses Alumni Association Bulletin, Fall 1998

1998-1999 Meeting Date Calendar 1999 Annual Luncheon & Meeting Notice Fall Social Officers and Committee Chairs Bulletin Publication Committee The President\u27s Message Treasurer\u27s Report News About Our Graduates Highlight Of 1998 Operation Smile Scholarship Funds At Work Romania Trip Double Honors Doris Bowman Memorial Service For Janet Hindson A time for everything On the Lighter Side Twenty Ways to Kill an Organization Happy Birthday Fiftieth Anniversary Resume Alumni Association Meetings Alumni Office News Committee Reports Bulletin By-Laws Relief Fund Social Scholarship Development Nominating Luncheon Photos In Memoriam, Names of Deceased Graduates Class News Certification Reimbursement Application Relief Fund Application Scholarship Fund Application (new) Pins, Transcripts, Class Address List, Change of Address Forms Campus Ma

Theoretical and material studies on thin-film electroluminescent devices

During this report period work was performed on the modeling of High Field Electronic Transport in Bulk ZnS and ZnSe, and also on the surface cleaning of Si for MBE growth. Some MBE growth runs have also been performed in the Varian GEN II System. A brief outline of the experimental work is given. A complete summary will be done at the end of the next reporting period at the completion of the investigation. The theoretical studies are included