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Sissenwine has over 20 years experience as a research scientist , authoring over 100 scientific reports and publications on a wide range of topics including ecosystem dynamics , fisheries oceanography , resource assessments and fishery management theory and case studies . The Urban Institute conducts research that informs policy across a broad range of topics including children , housing , welfare reform , immigration , cities and metropolitan regions , the nonprofit sector , and tax policy . The department conducts an very active programme of research and covers a broad range of topics including : communications , distributed systems , formal methods , functional programming , graphics and interactive systems , information retrieval , operating systems and persistent systems . It has set up a programme that covers a wide range of topics including applications , programming languages , implementation , specification , distribution , databases and design . Since joining Philips in 1987 , Dr. Wendorf has served in a number of technical and management positions in Research and Development , on a range of topics including multiprocessor operating systems , television and set-top box control systems , interactive digital TV , HDTV , video processing , display electronics , storage systems , home networks , and medical IT .