In one embodiment, a technique for controlling traffic in a computer network includes modifying a packet generated by a first computer. The mechanical transmission includes first and second synchronizing assemblies for synchronizing at least one of a first or second output member with a combined output speed from the input member and the hydrostatic transmission. The object measuring apparatus obtains at least one integral value by integrating components perpendicular to the boundary line of the motion vectors. The segments may be ethernet segments with data flow over the point-to-multipoint virtual channel being unidirectional. The pheA-tyrA chromosomal region of the bacterial genome was replaced with an engineered chromosomal segment, resulting in inactivation of the pheA coding region and strong expression of the tyrA coding region, resulting in high levels of L-tyrosine production.