The present invention provides a photopolymerizable liquid crystal composition comprising at least a compound having oxiranyl as a first component and at least a compound having oxetanyl as a second component, a polymer or a polymer composition obtained from the liquid crystal composition, a film obtained from the polymer or polymer composition, and an optical compensation element using the film. Some embodiments of glass compositions can provide desirable dielectric constants, desirable dissipation factors, andor desirable mechanical properties while also having desirable fiber forming properties. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. Therefore, to efficiently calculate hail an inverse modulo, a modified algorithm that utilizes a minimum of three division and two multiplications in conjunction with shifts and additionsubtractions is employed.