in this study we tried to assess the incidence rate of shunt complications and it's association with age, sex, location of shunt, duration of surgery, and so on. for this purpose in a prospective study, 82 cases of hydrocephalus after shunt insertion, during the period of two years (1375-1377) in shariati hospital were selected and all the complications were evaluated. from the patients, 3...

Growth of the Internet of Things (IoT) spurs need for new ways of delivering power. Wireless power transfer (WPT) has come into the spotlight from both academia and industry as a promising way to power the IoT devices. As one of the well-known WPT techniques, the capacitive power transfer (CPT) has the merit of low electromagnetic radiation and amenability of combined power and data transfer ov...

-In this paper, piezoelectric actuation is compared with electrostatic actuation for application in RF-MEMS switches with respect to actuation voltage and technological implementation. The expression for the actuation voltages of electrostatic and piezoelectric actuation are discussed and compared with respect to scaling. Calculation examples show actuation voltages for a cantilever beam of 1μm...

This paper discusses data acquisition, transmission and processing methodologies for continuous on-line monitoring of partial discharges in high voltage cable systems. A PD continuous on-line monitoring system for underground cable circuits using capacitive couplers, LiNbO3 electro-optic modulators, laser, optical switch and optical fibers has been developed. Future research will consider effec...

This paper proposes the use of four-transistor (4T) cache and branch predictor array cell designs to address increasing worries regarding leakage power dissipation. While 4T designs lose state when infrequently accessed, they have very low leakage, smaller area, and no capacitive loads to switch. This short paper gives an overview of 4T implementation issues and a preliminary evaluation of leak...

This paper presents a new combination of PIN diode switch for low insertion loss and high isolation. The combination is designed for frequency 0.1 to 10 GHz. In new combination we connect the two series-shunt combination one is across the input port and the other one is across the output port with one shunt diode connect between two λ/4 micro strip line. It has been concluded that in new combin...

A SMART repeater is proposed for driving capacitively-coupled, global-length on-chip interconnects that alters its drive strength dynamically to match the relative bit pattern on the wires and thus the effective capacitive load. This is achieved by partitioning the driver into main and assistant drivers; for a higher effective load capacitance both drivers switch, while for a lower effective ca...

abstractbackgroundline of treatment for management of hydrocephalus despite available new techniques andsystems of shunting. associated complications should be recognized and managed properly,but the most recognized complications are shunt obstruction which its prevalencethrough surgical approach is discussed here. two approaches (frontal and parietal) are usedto insert ventriculoperitoneal shu...

In the previous studies the effect of Static Var Compensator (SVC) and Power System Stabilizers (PSS) has not been considered specially for various faults in a three phase system. For improvement in inductive and capacitive power flows Shunt Flexible AC Transmission System (FACTS) devices can be used and when they are placed in the center of transmission line of a electrical power transmission ...

This paper presents a self-powered piezoelectric energy harvesting circuit using frequency conversion. A vibration energy harvesting principle is introduced. Due to a capacitive characteristic of the piezoelectric vibration transducer, an energy harvesting circuit is proposed for matching the capacitive impedance. The energy harvesting circuit consists of a matching circuit with up-conversion, ...