When you chose a paper topic and determined your research questions, you conducted preliminary research to stimulate your thinking. Your research proposal included some general ideas for how to go about your research—for instance, interviewing an expert in the field or analyzing the content of popular magazines. You may even have identified a few potential sources. Now it is time to conduct a more focused, systematic search for informative primary and secondary sources.
A disk defragmenter is a utility that reorganizes the files and unused space on a computer's hard disk so that the operating system accesses data more quickly and programs run faster.