Capillary wireless sensor networks devoted to air quality monitoring have provided vital information on dangerous air conditions. In adopting the environmentallygenerated energy as the fundamental energy source the main challenge is the implementation of capillary networks rather than replacing the batteries on a set period of times that leads to functional dilemma of devices management and hig...

This paper describes the digital control of a vibratory pile driver in which the vibration is generated via two tandem pairs of electrically driven, geared, contra-rotating eccentrics. Experimental results are included to show the controller-induced system dynamics for a variety of load conditions, and to highlight the fact that, if the relative phase of the eccentric pairs is not controlled, t...

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Wind energy has become a fast growing industry in China in the last decade. The development of the wind energy industry presents interesting policy questions. In the context of China, in additional to national energy policies, provincial policies were designed and implemented to stimulate the growth of wind power. This paper examines factors, especially provincial wind energy policies, in drivi...

This paper describes a CMOS mixer core, operating at 1GHz, where the RF signal is input via the bulk. The advantages of a bulk driven mixer are low power supply voltages and low power consumption. Simulations have confirmed that a power supply as low as 1V can be used to power the mixer core, which drains approximately 1.6mA. Although the mixer core consumes very low power, it still provides re...

Supply chain integration nowadays is considered an important approach to building and sustaining competitive advantages. Many previous empirical researches have investigated trust and power between suppliers and customers, yet, the effects of trust and coercive power on supply chain integration are still largely unknown. This study investigates trust, coercive power and their interaction and th...

Speed and availability of information, delivered in past years by Internet technologies, made it easier for any company to outsource primary activities, which resulted in unbundling of many companies’ traditional value constellations into networks of different companies. In the electricity power sector decomposition of the value constellation is not only enabled by technological advances such a...

The sensor nodes of wireless sensor networks are placed in observation areas and transmit data to the observer by using multi-hop communication between nodes. Because these nodes are small and have a limited power supply, they must save power in order to prolong the network’s lifetime. We propose HGAF (Hierarchical Geographic Adaptive Fidelity) to give a layered structure to GAF (Geographic Ada...