The theories initially spawned by this. debate were propositional theory, imagery theory, and dual-coding theory. Related research further suggests that. knowledge encoding processes such as landmark-based and path-based learning may also affect these. representations. Such theories form a basis from which cartographers can begin to explore the mental. representations of spatial knowledge. The purpose of this study was to assess the mental organization of spatial. information and to examine the effect of varying the encoding process.
Industrial. MEC has the experience and technology to offer excellent in-house cleaning services for industries using a number of different techniques such as Dip Tank Cleaning, Mechanical Cleaning, Pressure Washer Cleaning and Circulation in Place Cleaning.
Other names for tetrachloroethene include PERC, tetrachloroethylene, perchloroethylene, and PCE. PERC is a commonly used name and will be used in the rest of the fact sheet. PERC is a nonflammable, colorless liquid at room temperature. It readily evaporates into air and has an ether-like odor.Because most people stop noticing the odor of PERC in air after a short time, odor is not a reliable warning signal of PERC exposure.ERC is a nonflammable, colorless liquid at room temperature. It readily evaporates into air and has an ether-like odor. Because most people stop noticing the odor of PERC in air after a short time, odor is not a reliable warning signal of PERC exposure.