| Abstract: |
We present a model and system for the cost-value evaluation of teleteaching systems. Different teleteaching systems can be compared according to their cost-value ratios. Basically, the model
considers the total costs of a teleteaching systems and, additionally, different levels of benefits. The benefits are classified as either objective, e.g., transmitted audio and video quality, or
subjective, e.g., personal feelings. Objective and subjective benefits are each reduced to a single value characterising the overall system quality. Two cost-value ratios are computed by, first,
combining the total costs and the objective benefits and, second, by combining this result with the subjective benefits value. The smaller the cost-value ratio the better is the system. The model
is implemented by a number of EXCELŽ-worksheets: One is for the different types of costs from which the total costs of a system, costs per hour and costs per student are computed. In another
worksheet the objective benefits value and in a third one the subjective benefits value are determined. In an overview worksheet the cost-value ratios are computed and all essential cost figures
are summarized. |
