Abstract: A system is disclosed for additively manufacturing an object. The system may include a support, and a print head operatively connected to and moveable by the support. The print head may include a first module configured to discharge a material, a second module configured to compact the material, and an actuator connected to the second module and configured to apply a force to the second module. The system may further include a controller in communication with the actuator. The controller may be configured to determine an operating parameter of the print head, and to selectively adjust the force applied by the actuator to the second module based on the operating parameter.

Abstract: A content monitoring system having a vehicle content module for monitoring the use of a content player in a vehicle. The vehicle module includes an interface to a data communications network of the vehicle and a data collector for monitoring data on the data communications network to access in real time player data representing use of the player. The content can include self-loaded content, such as that of a CD, DVD, an ipod, and an mp3 file and broadcast content, such as that of an FM radio broadcast. The content monitoring system also includes a transmission module for transmitting the player data from the vehicle and a server system including an analysis module for receiving and processing the player data from the data collector to generate content usage report data, e.g. representing an audience or ratings survey.

Abstract: The present invention relates to a glass substrate for a thin film magnetic data storage disk and to a process for producing such a glass substrate. The process includes the steps of: (a) providing a glass substrate; (b) printing a regular masking pattern of printed dots onto at least a portion of the surface of the substrate; and (c) etching the unmasked surface of the substrate thereby to texture the substrate surface. The glass substrate for a thin film magnetic data storage disk has a roughened surface produced by preferential area etching, the roughened surface being composed of a regular pattern of peaks separated by valleys.