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In many industrial environments properly fit and functioning respirators are required to reduce individual's exposure to particulate matter. Respirator fits are evaluated prior to use by the Occupational Health and Safety (OSHA) fit testing protocol. However, this testing cannot ensure that the seal is maintained during actual use. The OSHA fit testing equipment and laboratory grade aerosol monitors...
In image processing, the detection of keypoint plays a significant role in foundation work of many image applications. Most widely distributed features in images are corners. Among the famous corner detectors, Harris detector has shown its excellent performance. However, when coming up with SAR image, the speckle noise may severely influence the performance of Harris. And Harris is seldom used in...
Beer fermentation process has the characteristics of nonlinear, time varvine and pure lae. Since tradition PID control and fuzzv PID control are difficult to satisfy the control reauirements, an improved variable universe fuzzv PID control method is proposed. The variable universe fuzzv controller is improved bv adapting scale partition method. PID control, fuzzv PID control and imnroved variable...
We demonstrate a reconfigurable all-optical logic gate for NRZ-PolSK signal based on FWM in a highly nonlinear fibe at 10Gb/s. Half-subtracter, XOR, AB, AB or XNOR, AND, NOR logic gates can be implemented simultaneously. Power penalties are less than 3dB.
An all-optical logic unit based on both FWM and XGM arising in a single SOA is proposed. Dual-channel logic AND, NOR, and XNOR gates for CSRZ-OOK signals could be simultaneously achieved without reconfiguration.
Along with consuming of fossil energy step by step, crisis of energy has been appeared. The solar energy, which is endless, is a kind of renewable energy. Radiation of sun coming to earth in a day is equal to the energy, which is released by trillion buckets of oil. The research of solar energy generation has stepped into a very activity period. This paper analyses the physics characteristic of photovoltaic...
Recent years, technologies for new energy have developed rapidly since the energy crisis and the environmental pollution got worse. And the solar energy generation technology tends towards the stage of a large number of applications in engineering from the research stage. This paper designed a grid-connected PV system firstly, then introduced the operation principle of the various parts as well with...
To cope with the development of Carrier-suppressed-return-to-zero-on-off-keying (CSRZ-OOK) modulation format, it is of great significance to investigate all-optical logic gates to process CSRZ-OOK format signals. To the best of our knowledge, for CSRZ-OOK signals, only logic AND gate has been demonstrated while other logic functions haven't been explored until now. In this paper, an all-optical logic...
An all-optical logic unit to process CSRZ-OOK format signals based on FWM arising in an SOA is proposed. A logic OR gate and two logic AND gates with different wavelengths could be simultaneously achieved in this single unit without reconfiguration.
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