There are 3 types of bulbs that work well as grow lights: metal halide, high pressure sodium (HPS), and fluorescent. Each type of light fixture has its own advantages and drawbacks. 1  Metal halide bulbs are compact and efficient, producing a very intense light from a small bulb.
The normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not.Contents.he normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not. Contents.
NVivo is a software tool that complements the work of human researchers working on qualitative and mixed methods (and multi-methodology) research.As such, it enables the ingestion of various types of digital data, the coding of that data, and then various types of queries and analyses of that coding and data.ome say that NVivo is reflective of a grounded-theory emergent approach (which begins with data and observations and ends with hypothesizing and theorizing and research); others suggest the opposite, suggesting that this software tool benefits an a priori or pre-defined theoretical research approach.