A 17-in. video rate full color Ferroelectric Liquid Crystal Display (FLCD) with 720•~916 dots, using r-Vmin mode was developed. The full color moving images with 256 gray levels for each color was displayed by the digital gray scale method combining 2 bits spatial dither and 4 bits temporal dither. The response speed of FLC material is very fast (12 ps/line) and the 4 bits temporal dither with video rate scanning was realized. The FLCD shows a contrast ratio of 60 : 1, a wide viewing angle due to the in-plane switching, and strong shock stability (20 kg/cm2) due to the spacer walls structure. This paper presents a high potential of FLCD for the large-size direct-view video-rate full-color simple-passive-matrix flat panel display.
Millions of cameras are openly connected to the Internet for a variety of purposes. This paper takes advantage of this resource to gather visual data. This camera data could be used for a myriad of purposes by solving two problems. (i) The network camera image data needs context to solve real world problems. (ii) While contextual data is available, it is not centrally aggregated. The goal is to make it easy to leverage the vast amount of network cameras. The database allows users to aggregate camera data from over 119,000 network camera sources all across the globe in real time. This paper explains how to collect publicly available information from network cameras. The paper describes how to analyze websites to retrieve relevant information about the cameras and to calculate the refresh rates of the cameras.
SummaryNuclear energy, already a practical solution for supplying energy on a scale similar to fossil fuels, will likely increase its footprint over the next several decades to meet current climate goals. Gamma radiation is produced during fission in existing nuclear reactors and thus the need to detect leakage from nuclear plants, and effects of such leakage on ecosystems will likely also increase. At present, gamma radiation is detected using mechanical sensors that have several drawbacks, including: (i) limited availability; (ii) reliance on power supply; and (iii) requirement of human presence in dangerous areas. To overcome these limitations, we have developed a plant biosensor (phytosensor) to detect low‐dose ionizing radiation. The system utilizes synthetic biology to engineer a dosimetric switch into potato utilizing the plant's native DNA damage response (DDR) machinery to produce a fluorescent output. In this work, the radiation phytosensor was shown to respond to a wide range of gamma radiation exposure (10–80 Grey) producing a reporter signal that was detectable at >3 m. Further, a pressure test of the top radiation phytosensor in a complex mesocosm demonstrated full function of the system in a ‘real world’ scenario.
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