For more information on eligibility for employment-based nonimmigrant visas, see Nonimmigrant (Temporary) Work Visa Options. Your next step is determining how and where to apply for your visa; for more information, see Nolo's article Applying for a Nonimmigrant (Temporary) Visa or get the book U.S. Immigration Made Easy, by Ilona Bray (Nolo).
Statistical process control. Statistical process control (SPC) is the use of statistical methods to assess the stability of a process and the quality of its outputs. For example, consider a bottling plant. The entire system of production that produces filled bottles is termed a process.
Control is a Continuous Process: Controlling is not the last function of management but it is a continuous process. Control is not a one-time activity, but a continuous process. The process of setting the standards needs constant analysis and revision depending upon external forces, plans, and internal performance.