Control system

A Control system manages, commands, direct or regulates the behaviour of other devices or systems. It can range from a home heating controller using a thermostat controlling a domestic boiler to a large industrial control systems which are used for controlling processes. The needs of society for improved safety and a cleaner environment have posed


Analog Digital Hybrid Modulation

The transmission of an analog signal over a band-limited channel, it could be possible by two conventional techniques analog transmission and digital transmission of which the latter uses sampling and quantization principles.


Energy Conversion

Recent increases in energy prices provide a graphic reminder of the importance of energy to our economy and our quality of life. Improved efficiency of energy systems and development of sustainable, low-carbon-emission energy generation processes are essential for the long-term health of the environment. Focused on advance energy  carrier technologies and energy conversion devices such


Magnetic Resonance Imaging Using Hyperpolarized Gas

A method of imaging a spatial distribution of a noble gas by nuclear magnetic resonance spectrometry includes detecting a spatial distribution of at least one noble gas by NMR spectrometry and generating a representation of said spatial distribution of the noble gas.    


Satellite Observations of the Earth’s Climate System

    The Earth’s climate is established via a complex set of interactions between and within its major subsystems. Predicting the evolution of the Earth’s climate is difficult as the processes that govern these interactions are connected over vast ranges of time and space.


Stem Cell Advocates and Critics Push Back on FDA Guidelines

Editor’s Note (9/22/2016): This article has been updated from the original to include the location of the hearing and a response from physicians involved in a stem cell treatment study. Earlier this month the U.S. Food and Drug Administration opened its doors to public commentary on its newest guidelines on the use of therapies derived