1-introduction one of the problems that is important in the waste management is the topic of waste rural landfill site selection and latex resulting from that in rural areas. the latex can be because groundwater pollution the contamination vulnerability and groundwater protection assessment has proved to be an effective tool for the delineation of protection zones in area affected by groundwate...

Current enterprise infrastructures based on CORBA have to rely on ad-hoc mechanisms for system software evolution. The CORBA services speci cations do not address the problems associated with evolving modern software systems, leaving the programmer to manage the complexity. The DRASTIC system provides a run-time environment in which the evolution of software is directly supported. With referenc...