Embodiments of polymer dispersed liquid crystals in accordance with the present invention comprise TL-series liquid crystal materials and a polymer matrix comprising polyacrylate resins having hydroxyl groups. A node receives the messages transmitted from neighboring nodes in the network, and records the times of arrival of the received messages. The cold pages can include a first subset of memory pages having a first type of memory data and a second subset of memory pages having a second type of memory data. The language used for the labels is selectable by a user via a menu, and the corresponding entries in the database are used in building the representations. The second substrate is connected to the first substrate. The present disclosure determines the sponsor of the intercepted invoking command according to the data structure of the invoking command, and can monitor comprehensively computer system.