Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 8 of 8

Full-Text Articles in Entire DC Network

Gamma And Dynamic Range Needs For An Hdtv Electronic Cinematography System, Harry Mathias Sep 1987

Gamma And Dynamic Range Needs For An Hdtv Electronic Cinematography System, Harry Mathias

Harry Mathias

A cinematographer's perspective regarding gamma and contrast manipulation in video and film is given. In film, a selective exposure can be used; the negative characteristic is the cinematographer's creative tool. The use of film as a video medium is considered, both negative and positive transfer. Contrast reproduction in the video medium is explained, and film and video gammas are compared. Also compared with the film gamma is the gamma obtained with an HDTV camera. Future trends are sketched, and current HDTV specifications are compared with the characteristics of film. Predictability and consistency of results, that is, the final image on …


Cooper's Fathers And Daughters: The Dialectic Of Paternity, Susan Shillinglaw Jan 1987

Cooper's Fathers And Daughters: The Dialectic Of Paternity, Susan Shillinglaw

Susan Shillinglaw

No abstract provided.


Pictorial Space As Identity In The Deerslayer, Susan Shillinglaw Jan 1987

Pictorial Space As Identity In The Deerslayer, Susan Shillinglaw

Susan Shillinglaw

No abstract provided.


Fluctuating Hydrodynamics In A Dilute Gas, Alejandro Garcia, G. Lie, E. Clementi Jan 1987

Fluctuating Hydrodynamics In A Dilute Gas, Alejandro Garcia, G. Lie, E. Clementi

Alejandro Garcia

Hydrodynamic fluctuations in a dilute gas subjected to a constant heat flux are studied by both a computer simulation and the Landau-Lifshitz formalism. The latter explicitly incorporates the boundary conditions of the finite system, thus permitting quantitative comparison with the former. Good agreement is demonstrated.


Hydrodynamic Fluctuations In A Fluid Under Constant Shear, Alejandro Garcia, M. Malek Mansour, G. Lie, E. Clementi, M. Mareschal Jan 1987

Hydrodynamic Fluctuations In A Fluid Under Constant Shear, Alejandro Garcia, M. Malek Mansour, G. Lie, E. Clementi, M. Mareschal

Alejandro Garcia

No abstract provided.


Esr Study Of Optically Induced Phase Transitions, Juana Vivó Acrivos, H. P. Hughes, S. S.P. Parkin Jan 1987

Esr Study Of Optically Induced Phase Transitions, Juana Vivó Acrivos, H. P. Hughes, S. S.P. Parkin

Juana Vivó Acrivos

We have identified an optically enhanced magnetic phase transition in the newly synthesized organic molecular charge transfer salt, (BEDT-TTF)3Ta2F11 (BEDT-TTF bisethylenedithiolotetrathiafulvalene) by ESR absorption measurements in the X band microwave region. At room temperature, only a doublet state ESR absorption is observed, but below 30 K severa~ tripl~t E.SR absorpti_ons appear. The orientation dependence of the ESR absorption under lllummat10n at energies near the band gaps in the material ( 640 nm, T = 12 to 5 K H0 < 0.34 T) indicates that there are rapid spin exchange processes with times r < w-s; near 7 ~o 5 K.along cert~in ~rystallographic directions with a temperature dependen~e suggesting spm-lattlce relaxation times which proceed via Van Vleck "direct processes." This, to our knowledge, is the first case where the magnetic properties of a charge transfer salt are altered by the interaction with photons of energy equal to the band gaps in a low dimensional solid providing a new, interesting way to investigate these materials.


Great Gains Or Weight Work, L Kravitz, C J. Cisar Jan 1987

Great Gains Or Weight Work, L Kravitz, C J. Cisar

Craig J. Cisar

No abstract provided.


An Economic Analysis Of Factor Usage And Workplace Regulation: Comment, Yeung-Nan Shieh, D. Olson Jan 1987

An Economic Analysis Of Factor Usage And Workplace Regulation: Comment, Yeung-Nan Shieh, D. Olson

Yeung-Nan Shieh

No abstract provided.