منابع مشابه
Microwave Doppler Sensors Measuring Vehicle Speed and Travelled Distance: Realistic System Tests in Railroad Environment
A high-performance 24 GHz microwave Doppler sensor system for non-contact ground speed measurement is presented. Its potential for positioning tasks, as well as slippage control in railway applications has been demonstrated in extended measurement campaigns. The microwave front-ends are based on highly stabilised dielectric resonator oscillators and low-cost patch antennas. Employing model base...
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Greater than half of all the fatal injuries on United States railroads are sustained by trespassers. The paper provides a statistical analysis of the demographics of trespassers, the activities they were engaged in, and the causes of injury. It also analyzes trends over time. The paper finds that the risks of injury and death are particularly acute for males in their 20s and 30s. The annual cas...
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Systems are getting more and more complex and usually involve many stakeholders. Stakeholders are concerned by different aspects of the system, potentially supported by multiple Domain Specific Modeling Languages (DSMLs). The DSMLs are usually different not only in their syntax but also in their behavioral semantics. In order to provide simulation and/or verification of the overall system, it i...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1907
ISSN: 0036-8733
DOI: 10.1038/scientificamerican12141907-376supp