Method and apparatus are presented for sequentially scanning a plurality of target elements with an electron scanning beam modulated in accordance with variations in a high-frequency analog signal to provide discrete analog signal samples representative of successive portions of the analog signal; coupling the discrete analog signal samples from each of the target elements to a different one of a plurality of high speed storage devices; converting the discrete analog signal samples to equivalent digital signals; and storing the digital signals in a digital memory unit for subsequent measurement or display.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Frank Jones"

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Walter Day shows off an old copy of the Boston American."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "This view of the eastbound exit off I-240 at Pennsylvania looking south from under the overpass"

An important consideration in chemical process control is to determine the precise rationing of reactant streams, particularly when a large time delay exists between the mixing of the reactants and the measurement of the product. In this paper, a method is described for incorporating chemical kinetic models into the control strategy in order to achieve optimum operating conditions. The system is first characterized by determining a reaction rate surface as a function of all input reactant concentrations over a feasible range. A nonlinear constrained optimization program is then used to determine the combination of reactants which produces the specified yield at minimum cost. This operating condition is then used to establish the nominal concentrations of the reactants. The actual operation is determined through a feedback control system employing a Smith predictor. The method is demonstrated on a laboratory bench scale enzyme reactor.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Evelyn Orth"

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "It's been said there are no easy answers, Myron McCauley knows better."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Lyric Theater show stealer Jane Hall, right, gets a lesson from Jim Massey and Mariann Cook in "Plain & Fancy."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "After worshippers together for nearly a century, the dwindling congregation of the Martha Methodist Church in Jackson County is disbanding."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As part of the four-day Shawnee Old Santa Fe Days celebrations through Saturday at the old Santa Fe Depot in Shawnee, fiddlers (from left) Loretta Brank, of Anderson, Calif., Herman Johnson, Shawnee, and J'Anno Jacoby, of Redding, Calif."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Neighborhood youngsters around NW 8 and Virginia hurdle across this spray fountain at a city wading pool Monday to cool off."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Barry and Anletha Rice enjoy watermelon treat."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As part of four--day Shawnee Old Santa Fe Days celebrations tough Saturday ar the old Santa Fe Depot in Shawnee, fiddlers from left Loretta Brank of Anderson Cali."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Elaine Strong, Tops"

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Workman lay tiles at Kerr Park extension project Wednesday in downtown Oklahoma city. the work is part of plan to extend and beutify the park on portion of Counch Drive downtown."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Scott Smith points to a hole and dents in the railing of his above ground pool, believed to have been made by a high powered air rifle."