D. Decker, BA, MS
Department of Computer Science
sure to check Blackboard Academic Suite at webcourses.niu.edu
for your class and section!
Summer 2019 Teaching Schedule:
CSCI 470-1/502-1 - Programming in Java: 10:00 AM-12:45 PM on MW in PM 253.
CSCI 470-2/502-2 - Programming in Java: 10:00 AM-12:45 PM on TTh in PM 251.
Summer 2019 Office Hours:
9:00-10:00 AM on MTWTh,
12:45-1:15 PM on MTWTh
and also by email and appointment.
Geoffrey D. Decker, BA, MS
Department of Computer Science
DeKalb, IL 60115-2854
Office: PM 463
Department Phone: 815.753.0378
M.S. in Computer
Science Northern Illinois University DeKalb, Illinois August 1990
of Kansas Lawrence,
Kansas May 1986
was born in 1962 in the Missouri River bluff town of Atchison, Kansas
(Amelia Earhart, the famous aviatrix, was born there too!), to a family with
three older sisters. I grew up in the Kansas City
area on the Kansas side in the suburbs of Mission,
Prairie Village, and Overland Park. My father, Kenneth
Decker (1916-1994), was a barber by trade and my mother, Beverly Dege
Decker (1925-2002), when she worked outside the home, did graphic design and art
for a large yearbook publishing company.
graduated from Shawnee Mission
School in Overland Park, Kansas,
in 1980. I attended the University
of Kansas in Lawrence, Kansas.
After completing several years and many pre-med classes including a lot
of science and math, I decided it was not for me and changed my
major to the B.A. in Music with an
emphasis in Music History. Throughout my time at KU, I played
horn in the
marching band, symphonic band, and symphony orchestra. I also
played as a member of
musicians' union in the semi-professional Lawrence Chamber Players,
Symphony Orchestra, and Lawrence Symphony Orchestra. Besides
playing, I studied some orchestral conducting with Drs. George
and Zuohuang Chen and horn with Professor David
graduating from KU in May of 1986, I eventually moved to DeKalb,
Illinois, and began the M.S. in Computer
Science degree program at Northern
in June 1988.
graduating from NIU in August 1990, I worked as a programmer at Kemper Service
Company, the transfer agency for Kemper Mutual Funds, in Kansas City, Missouri.
My employment was eventually transferred to DST Systems, Inc., also in Kansas City.
At Kemper and DST, I worked as a programmer in COBOL, Assembler, C and
spent two years as a technical recruiter in DST's Employment
My last two years at DST were spent as a systems programmer.
In 1998, I founded and conducted the DST Symphony Orchestra
and the DST Wind Ensemble, both made up of DST employees, their
families and friends. In
July 2000, I was invited to conduct the DST Wind Ensemble and members
Kansas City Symphony in an outdoor concert inaugurating Kansas City's Avenue of the Arts.
years as a professional programmer in the mutual fund and financial
industry, I decided it was time for a change and began my career as an
instructor at Northern Illinois
University in August 2001. I
had taught courses in COBOL, Systems Analysis and Design, Music Appreciation, and
the humanities at National American
University in Kansas City, Missouri,
but really wanted to teach full time. Northern Illinois
University's Department of Computer Science provides me that
opportunity, and I am very happy to be here working with talented students and
a distinguished faculty. In 2005 I was awarded the Department of Computer
Science's Excellence in Teaching Award, an honor I very much appreciate,
and I thank our former chair, the late Dr. Rodney Angotti, the Department of Computer
Science, its Student Advisory Board, and those students that nominated
me. In August 2019, I will begin my 19th year of teaching at NIU.
I regularly play French horn in both the Kishwaukee Symphony Orchestra and the DeKalb Municipal
also write the program notes for
the Kishwaukee Symphony’s concert programs. As often as I
can, I act as an IT consultant and review classical CDs and downloadable files for various
husband, Chuck, is also an NIU alumnus and teaches sixth grade in a
nearby public school district. We live near
the university community with our Westie, Liesel.
Concerts in which I'm involved during the 2019-2020 concert season:
Visit DeKalb Municipal Band Concerts soon for information about the summer 2019 season.
Visit Kishwaukee Symphony Orchestra
for more information about the 2019-2020 season.
- Operating Systems - zOS, primarily.
Analysis and Design and OO Systems Analysis and Design.
- Several of my papers on music:
Meistersinger von Nürnberg
- Playing the horn
(mistakenly known as the French horn to some although there's little
that's French about it or its history).
- Classical Music -
The composers Mozart, Beethoven, Brahms, Bach, Bruckner, Wagner, Richard
Strauss, Tschaikowsky, Elgar, Schostakowitsch, Haydn, Händel, Britten,
Berg, Berlioz, Schoenberg, Webern, Debussy, Sousa, Schumann, Ravel, Verdi,
Donizetti, Bellini, Puccini, Grieg, Mahler, Prokofiev, the Strauss
Family, Johann I, Josef, Eduard, and Johann II, and Stravinsky, and
the conductors Herbert von Karajan,
Arturo Toscanini, Wilhelm
Furtwängler, Karl Böhm, Carlos Kleiber, Erich Kleiber, Sir Georg Solti, Dmitri
Mitropoulos, Fritz Reiner, Leonard
Bernstein, Hans Knappertsbusch, Clemens Krauss, Joseph Keilberth,
Eugen Jochum, Rafael Kubelik, Sir Adrian Boult, Leopold Stokowski,
Arthur Nikisch, and Carlo Maria Giulini, George
Szell...............all are dead and gone, sorry to say.
- The Vienna
Philharmonic Orchestra (Wiener Philharmoniker), the Berlin Philharmonic
Orchestra (Berliner Philharmoniker), the Royal Concertgebouw Orchestra of Amsterdam, and the Chicago Symphony -
performances and recordings by these favorite great orchestras.
- Traveling to
Europe, especially Vienna, my
favorite city in the world.
- Period instrument
- American and
European History, especially that of the American Revolution, the
American Civil War and the Pennsylvania Germans.
Presidential History, especially that of the presidencies of George
Washington, John Adams, John Quincy Adams, Abraham
Lincoln, Theodore Roosevelt, Franklin D. Roosevelt, and
Harry S Truman.
- Westhighland White
- Architecture and
Favorite recipes - Wienerschnitzel
from Time-Life Books' The Cooking of Vienna's Empire
(Hungarian Kettle Goulash) from the same
Paprika Chicken from Wolfgang Puck
Napkin Dumplings from Wolfgang Puck
Tafelspitz/Kavalierspitz (Boiled Beef) from epicurious.com
- The German language
and its literature - reading, writing and speaking it.