Engineering topics
Publications and source records attributed to Williams, D. L..
The author has identified the following significant results. Six major airports are located within the ERTS-1 imagery. Runways at four of the airports are readily detectable. Runways at the other two airports are not detectable and the locations must be inferred by other means. This variation is attributed to variation in runway surface composition.
The author has identified the following significant results. Comparison of ERTS-1 imagery of three dates reveals that corn harvesting is detectable by observing tonal change associated with the change from photosynthetically active plants to bare ground.
Continuing interpretation of the test area in Finney County, Kansas, has revealed that winter wheat can be successfully identified. This successful identification is based on human recognition of tonal signatures on MSS images. Several different but highly successful interpretation strategies have been employed. These strategies involve the use of both spectral and temporal inputs. Good results have been obtained from a single MSS-5 image acquired at a critical time in the crop cycle (planting). On a test sample of 54,612 acres, 89 percent of the acreage was correctly classified as wheat or non-wheat and the estimated wheat acreage (19,516 acres) was 99 percent of the actual acreage of wheat in the sample area.
There are no author identified significant results in this report. Environmental and resources investigations in Kansas utilizing ERTS-1 imagery are summarized for the following areas: (1) use of feature extraction techniqued for texture context information in ERTS imagery; (2) interpretation and automatic image enhancement; (3) water use, production, and disease detection and predictions for wheat; (4) ERTS-1 agricultural statistics; (5) monitoring fresh water resources; and (6) ground pattern analysis in the Great Plains.
There are no author-identified significant results in this report.
Primary cell has an anode of lithium, a cathode containing dihaloisocyanuric acid, and a nonaqueous electrolyte comprised of a solution of lithium perchlorate in methyl formate. It produces an energy density of 213 watt hrs/lb and can achieve a high current density.
Molecular hydrogen-CO fuel cells operation, studying natural voltage oscillations due to repeated electrode poisoning and reactivation
High energy density lithium/dichloroisocyanuric acid battery system discharging under constant voltage and load conditions
Dry tape electrochemical battery development using lithium and dichloroisocyanuric acid to produce 200 W-Hr/lb
Dry tape battery concept - cathode and anode research, energy densities, tape cell preparation, and supporting research
Aqueous and nonqueous electrolytic actions, and energy density measurements for dry tape battery
Material electrical and chemical properties tested for use in dry tape batteries
Magnesium-aluminum chloride, hydrogen chloride- trichlorotriazinetrione system for dry tape batteries
Cell discharge measurements for dry tape battery couple - anode and cathode development in aqueous and nonaqueous electrolytes