Download A Binary Images Watermarking Algorithm Based on Adaptable by Zhang Fan, Zhang Junliang PDF

By Zhang Fan, Zhang Junliang

A watermarking set of rules of binary pictures utilizing adaptable matrix is gifted. An adaptable matrix is designed to guage the smoothness and the connectivity of binary photos. The watermark is embedded in line with the adaptable matrix during this set of rules. within the proposed watermarking set of rules, every one snapshot block implements a XOR operation with the binary adaptable matrix, which has an identical measurement with the picture block, and that allows you to embed the watermark facts, a multiplication operation also are applied with the burden matrix. The experimental effects exhibit that proposed scheme has an outstanding functionality.

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The outdoor-air damper modulates between 100 percent and the minimum position required for proper ventilation. 26 TRG-TRC017-EN period two Automatic Control of HVAC Systems notes VAV air handler Static-Pressure Control Loop supply fan controller duct staticstaticpressure sensor Figure 34 As the cooling load changes, the VAV terminal units vary the airflow supplied to the various spaces served by this system. In response, the capacity of the supply fan in the air handler is modulated to vary the airflow delivered down the supply duct.

A good indicator of the cooling load on a fan-coil unit, however, is the position of the coil control valve. Similar to the concept of fan-pressure optimization, the unit controller on each fan-coil unit knows the current position of its control valve. The system-level controller continually polls the individual unit controllers, looking for the one with the most-open valve. This controller then resets the chilled-water temperature setpoint until at least one valve, the one requiring the coldest water, is nearly fully open.

The type chosen depends on the desired operation of the device in the event of a loss of the control signal. For example, a normally-closed damper actuator is typically used with an outdoor-air damper in an air handler. In the case of a power loss, a normallyclosed actuator contains a spring, a battery, or a capacitor that forces the outdoor-air damper closed. If the control system fails when the temperature of the outdoor air is below 32°F (0°C), this normally-closed damper actuator will help protect downstream water coils from freezing.

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