منابع مشابه
Occupational hazards in window cleaning.
Accidental falls involving window cleaners treated at the Middlesex Hospital over five years are reviewed. Failure to use safety belts and the lack of suitable anchorage points were contributary factors in all 20 patients. The use of protective equipment and the provision of anchorage points should be enforced. While the doctor's duty is to treat injuries he also has the opportunity to draw att...
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Radio Frequency Identification (RFID) is one of the key technologies of the Internet ofThings (IoT) and is used inmany areas, such asmobile payments, public transportation, smart lock, and environment protection. However, the performance of RFID equipment can be easily affected by the surrounding environment, such as electronic productions and metal appliances. These can impose an impact on the...
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An elementary introduction to perturbative renormalization and renormalization group is presented. No prior knowledge of field theory is necessary because we do not refer to a particular physical theory. We are thus able to disentangle what is specific to field theory and what is intrinsic to renormalization. We link the general arguments and results to real phenomena encountered in particle ph...
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An optimized in-situ window cleaning system by laser blow-off through optical fiber has been developed on the basis of a feasibility study previously presented. The beam generated from a Q-switched Nd:YAG laser (up to 330mJ output energy, pulse duration 5ns FWHM with 10Hz repetition rate) is launched into a high damage threshold optical fiber (Ø=1mm) through an f=80mm lens kept in a sealed box ...
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Object detection is an important and challenging task in computer vision. In cascaded detectors, a scanned image is passed through a cascade in which all stage detectors have to classify a found object positively. Common detection algorithms use a sliding window approach, resulting in multiple detections of an object. Thus, the merging of multiple detections is a crucial step in postprocessing ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1979
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed056p768.4