Acoustic-Field Beamforming for Low-Power Portable Ultrasound.

Portable ultrasound has been extensively used for diagnostic applications in health monitoring, emergency rooms, and ambulances. However, these handheld ultrasound systems may suffer from heat and battery issues attributed to the large power consumption of the transmitter. Additionally, the largest portion of the direct current (DC) power consumption can be attributed to the amplifier in the digital-to-analog converter (DAC) of the transmitter and to the analog-to-digital converter (ADC) of the receiver.

Landscape dimension in the built environment: The spatial operative of an integrated micro agriculture unit.

The rapid urbanization creates an increased demand for food supply and security in urban system. The imminent risks stemmed from climate change appeal for a greater effort in an overhaul of the customary practices in the planning and management of the urban systems. Urban centers should accommodate the growing need for green infrastructure and edible landscape; options such as farming alternative has gained interest as a possible solution to the urban-scape and the food production stability for the urban inhabitants.