in recent years
Tag: in recent years
In recent years, psychological well-being has been the focus of intense research attention. Psychological well-being resides with in the experience of the individual. It may be defined as the state of feeling healthy and happy, having satisfaction, relaxation,
1220 days ago
Taaltantra in recent years has emerged as one of the foremost world music bands regularly enthralling audiences in the Mid-East, North America,
1222 days ago
In recent years, since there has been a significant increase in electricity demand, substation equipment has had to be more reliable and compact, coping with higher voltage and larger capacity ratings. By applying sulfur hexafluoride (SF6) gas to substation equipment like circuit breakers and switchgear, downsizing and lower maintenance costs can be achieved to greater degrees than in a conventional air-insulated substation because of the excellent performance of SF6 gas. Therefore, gas-insulated equipment like gas circuit breakers (GCB), gas-insulated switchgears (GIS) and gas-insulated transformers (GIT) are being widely and commonly used. Particularly in Japan, where land acquisition is extremely difficult, there is a large demand for GIS.
1300 days ago
In recent years, there has been an increased emphasis on development of the scientific basis of functional capacity evaluation (FCE). This has been stimulated by a growing awareness of its utility, and supported by major investments in research by large insurance providers and by state, provincial,
1300 days ago
The increase in recent years of loads of electronic components has created a major change in the characteristics of electrical installations, which are evident when analyzing the waveforms of voltage and current in those circuits, which are increasingly different from pure sinusoidal signals, due to various disturbances, one of them are the harmonics.
1303 days ago
In recent years there has been tremendous progress in the multirate processing of digital signals. Unlike the sin- gle-rate system, the sample spacing in a multirate system can vary from point to point [I], [2]. This often results in more efficient processing of signals because the sampling rates at various internal points can be kept as small as possible. Unfortunately, thisalso results in the introduction of a new type of error, i.e., aliasing, which should somehow be can- celed eventually. The basic building blocks in a multirate digital signal pro- cessing (DSP) system are decimators and interpolators. In 1981, an excellent tutorial article on decimation and inter- polation appeared in [3]. Subsequent to this a text on the subject of multirate systems has also been published by the same authors [4].
1303 days ago
In recent years, renewable sources of energy have gained increased attention due to the depletion of fossil fuels, increasing concentration of green house gases and climate changes. In the next 50-100 years, reduction of greenhouse gases of about 50% throughout the world is required [1]. In order to reduce greenhouse gases, we need to use renewable energy sources, and solar energy is one of the most environmentally safe energy sources. The simplest and most direct method of harnessing solar energy is solar thermal conversion method.
1304 days ago
In recent years there has been a large amount of interest in analysis of interconnected systems and networks, where the relation between the interconnection and stability of the resultingsystems are related. In particular, there has been an attempt to focus on distributed systems where the controller is decentralized, i.e each plant of the interconnected system makes a decision based on limited information that might be available to it. Interconnection can be found in our everyday life. There are many examples of such systems, and here we give only a sample of different problems that have the issue of interconnection in common.
1304 days ago
In recent years, many countries have expanded their health systems by training community health workers (CHWs) on a large scale. These CHWs are either paid or voluntary workers.
1305 days ago
In recent years, there has been an explosive growth of new applications on the Internet like streaming video, IP telephony, teleconferencing, interactive games, virtual world, distance learning, and so on.
1310 days ago
There has been a great deal of interest in recent years in the scattering of light from rough surfaces. In particular, light scattering from sea surfaces, and from Gaussian and fractal rough surfaces has been investigated both theoretically and experimentally. However, surfaces with a rectangular surface structure shape have not attracted as much attention. Jakeman and Hoenders [1] studied the statistics of the light scattered by a telegraph-wave surface of rectangular grooves distributed with a Poisson distribution of zero crossings. In this case, the grooves were the same depth but with variable width and separation. Similarly Depine and Skigin [2] used a modal method to calculate the scattering from rough surfaces with random rectangular grooves, all of the same depth. They also calculated for finitely conducting materials forming the surface.
1312 days ago