A computer program for training a customer service representative by analyzing a telephonic communication between a customer and a contact center is provided. For example, optical signals at wavelengths that are susceptible to impairments, such as non-linear effects, or that are not adequately amplified by an optical amplifier, may be modulated in accordance with lower rateless spectrally efficient modulation formats that are more noise tolerant. The shovel also comprises a hinge and locking mechanism in some embodiments. The system further includes a Load Balancer Lookup Finder object for finding and identifying an available Load Balancer to the Execution Manager at least one Load Balancer, at least one Compute Server and a Compute Server Lookup Finder object in communication with the Load Balancer to find and effectively utilize the available Compute Servers for executing the user services. The surface of the semiconductor layer for the thin film diode has a second recessed and projected pattern that reflects the shape of the first recessed and projected pattern. A method for fabricating the semiconductor device includes forming these structures.