Numerical simulations were performed to investigate pressure fluctuations in the S-shaped region of a pump-turbine model. Analyses focused on pressure fluctuations in the draft tube and in the gap between the guide vanes and runner. Calculations were made under six different operating conditions with a constant guide vane opening, and the best efficiency point, runaway point, and low-discharge ...

A key challenge in wearable health systems is obtaining continuous blood pressure (BP) information, bypassing intermittent and intrusive cuff inflation. In this paper, we explore the fusion of heterogeneous sensors, notably electrocardiogram (ECG) signals and photoplethysmogram (PPG) pulse oximeter readings, along with activity and location information, for blood pressure information classifica...

Taking the Blood Pressure (BP) with a traditional sphygmomanometer requires a trained user. In developed countries, patients who need to monitor their BP at home usually acquire an electronic BP device with an automatic inflate/deflate cycle that determines the BP through the oscillometric method. For patients in resource constrained regions automated BP measurement devices are scarce because s...

Current road safety initiatives are approaching the limit of their effectiveness in developed countries. A paradigm shift is needed to address the preventable deaths of thousands on our roads. Previous systems have focused on one or two aspects of driving: environmental sensing, vehicle dynamics or driver monitoring. Our approach is to consider the driver and the vehicle as part of a combined s...

As of September 2007, all cars sold in the United States must be equipped with a Tire Pressure Monitoring System (TPMS). Pending legislation in the European Union and some Asian countries makes universal adoption likely in many parts of the world. Given this large mandated market along with the fact that current TPMS modules require a battery for operation, interest in energy harvesters for TPM...

Results The search strategy identified 4288 potentially relevant abstracts. There were 315 publications retrieved, of which 233 RCTs were included. A total of 967 clinical measures were reported. There were large variations in the definitions used to describe different outcomes and their measures. Intraocular pressure (IOP) was the most commonly reported outcome (used in 201 RCTs, 86%) with a t...

The combination of low fertility, decreasing mortality and the baby-boom generation entering retirement will dramatically increase the share of elderly people in Slovenia in future decades. Without further changes in the pension system this will bring about strong pressure on the public pension system. In the analysis we use a cohort-based model to project the share of public expenditure on pen...

Abstract The current research of tire aerodynamics mainly focus on the isolated and simplified tread tire. Compared with real complex pattern tire, structure deformed profile a loaded has greatly influence aerodynamic drag. However, mechanisms tires different patterns effects drag are subjects worthy discussion. purpose this study is to experimentally computationally investigate characteristics...

The article deals with the problem of reducing energy consumption when moving mobile power sources on deformable support bases. On basis experimental studies using test-bench equipment, main output parameters 1020x420-18 tire Bel-79 model were determined. Analysis results obtained made it possible to determine an optimal range intra-tire pressure, realized propulsive efficiency takes maximum va...