In the vast emptiness of space lies in limbo a semismall planet. The planet is peaceful and quiet. Evil forces, though, has a different plan for this planet. The planet is enchanted by a six-shard crystal. This ordinary-looking crystal could form two more shards if needed. The crystal is protected by mystical beings known as the Intercessor Watchers. The Watchers are powerful, but there are only five of them to protect this rare crystal. The Watchers could feel that one day something or someone would try to steal the crystal. They also know that whoever steals it will use it for their own purpose. For generations, they have protected the crystal by sending it through portals and time. They would then follow it and replace it safely somewhere else. Never has the crystal had to protect itself by scattering all the shards to different places to hide itself from evil. Now in the far-off reaches of space, a very powerful villain lurks to capture the crystal. The villain known as Master Sensea seeks a galaxy to conquer. To do this, he needs the crystal for its powers. On the planet, the five are not worried about anything happening. One of the Watchers fears that something is wrong and knew they should have been worried.

This book covers topics on the basic models, assessments, and techniques to calculate evapotranspiration (ET) for practical applications in agriculture, forestry, and urban science. This simple and thorough guide provides the information and techniques necessary to develop, manage, interpret, and apply evapotranspiration ET data to practical applic

Communication devices such as smart phones, GPS systems, and Bluetooth, are now part of our daily lives more than ever before. As our communication equipment becomes more sophisticated, so do the radios and other hardware required to enable that technology. Common radio architectures are required to make this technology work seamlessly. This resource describes practical aspects of radio frequency communications systems design, bridging the gap between system-level design considerations and circuit-level design specifications. Industry experts not only provide detailed calculations and theory to determine block level specifications, but also discuss basic theory and operational concepts. This resource also includes extensive, up-to-date application examples.

This book covers the fundamental principles behind the design of ultra-low power radios and how they can form networks to facilitate a variety of applications within healthcare and environmental monitoring, since they may operate for years off a small battery or even harvest energy from the environment. These radios are distinct from conventional radios in that they must operate with very constrained resources and low overhead. This book provides a thorough discussion of the challenges associated with designing radios with such constrained resources, as well as fundamental design concepts and practical approaches to implementing working designs. Coverage includes integrated circuit design, timing and control considerations, fundamental theory behind low power and time domain operation, and network/communication protocol considerations.