Phosphoramidate alkylator prodrugs can be used to treat cancer when administered alone or in combination with one or more anti-neoplastic agents. The crankshaft has a cam with positive and negative acceleration portions. 1% to 30% by weight of one or more ethylenically unsaturated, polar ester compounds of the formula, and e) 0% to 50% by weight of comonomer, based in each case on the total weight of the ethylenically unsaturated monomers. A switch box control panel simulates the landing gear controls and indicators of retractable gear aircraft. In one embodiment, the gate dielectric comprises hafnium dioxide. Such polymers can exhibit high n-type carrier mobility andor good current modulation characteristics.