This paper discusses on general aspects of smart grids and focuses on some smart grid features at distribution level like interconnection of distributed generation and active distribution management, using automated meter reading (AMR) systems in network management and power quality monitoring, application of power electronics in electricity distribution, plug-in vehicles as part of smart grids...

Materials and methods Four instruments evaluated adherence: Self-Care Inventory-Revised version (SCI-R), a self-administered survey; Diabetes Self Monitoring Profile (DSMP), a survey administered by trained researchers; a categorical (yes/no/ sometimes) self-report question (“In the past month, did you take care of your diabetes as your doctor recommended?”); and a continuous adherence self-eva...

The 10-meter space radio telescope Spectrum-R was successfully launched on July 18, 2011, and unfurled several days later. The space element of the ground-space very long baseline interferometer RadioAstron covers four frequency bands from 92 to 1.3 cm and provides baselines up to 350,000 km. This allows to study space objects with a resolution as high as about 10 microarcsecond. The mission de...

We have built a high-accuracy wavelength meter for tunable lasers using a scanning Michelson interferometer and a reference laser of known wavelength. The reference laser is a frequency stabilized diode laser locked to an atomic transition in Rb. The wavemeter has a statistical error per measurement of 5 parts in 10 which can be reduced considerably by averaging. Using a second stabilized diode...

Since the electric generating, distributing and marketing has been possible; the Electric Meter was introduced and developed along the years, but never like this time. The digital technology, the wireless communication, and the computer systems have dramatically changed the Electric meter generation from Traditional Meter to Automatic Meter and now to Smart Meter. Their differences lie in how t...

The first kilometer-scale gravitational wave observatories, LIGO [1] and VIRGO [2], are expected to begin performing searches for astrophysical sources of gravitational waves in the year 2002. By this time, it will be necessary to have data analysis software for on-line searches. Because the anticipated signals are expected to be weak, near-optimal strategies for data analysis will be required ...

A Coriolis mass flow meter (Fig. 1) consists of an (essentially mechanical) vibrating flowtube through which the process fluid passes, and an (essentially electronic) transmitter. The transmitter maintains flowtube vibration by sending a drive signal to one or more drivers (d1, d2), and performs measurement calculations based on signals from two sensors (s1, s2). The phase difference between th...