A waste heat recovery system of a vehicle generally comprises a heat source, an air-passage body, and a heat-preservation container. For this purpose, a printing device board uses therein an information storage element formed common in material and process to electro-thermal converter element, the resistance value of which is changed to enable information storage so that information can be read out of the information storage element. Optical emission spectra produced may be analyzed for various properties effectively during the process. A particular predictor model order update rate may be selected based on the identified particular equalizer task queue format. Compositions containing the compounds and methods for using the compounds to inhibit HIV are also disclosed.