A method of building a locating service for a wireless network environment includes: an environment input step, a detection point calculation step, a measuring step and an assumed non-detected position point step to find measured position points and to measure a four-directional signal strength of the measured position point. The display unit is displaced inwardly toward a central axis of the reel when located in the retracted position, and in this position the reel is free to rotate in response to a wager being placed. The method allows the protein to be altered as minimally as possible, other than-within the IgE-binding sites, while retaining the ability of the protein to activate T cells, and, in some embodiments by not significantly altering or decreasing IgG binding capacity The examples use peanut allergens to demonstrate alteration of IgE binding sites. The distributed computing platform may in turn determine a response to provide based upon the beamforming andor ASR. The display apparatus for the liquid crystal display device can keep a satisfactory contrast ratio over a wide viewing angle and is preferably applicable to a medical use.