Daniel Berry celebrates half a century as pc science professor. Chariton Faculty of Pc Science


Any pc scientist who’s 70 or older at the moment is aware of virtually each different pc scientist of the identical age, as few have been within the self-discipline in his early days. One such particular person from that period is Daniel Berry, a professor within the software program engineering group on the Chariton Faculty of Pc Science.

Throughout his 50-year profession as a professor of pc science, he has studied, researched and taught pc science in three nations and several other establishments. “Over time I’ve had the privilege of assembly most of the pioneers of pc science and dealing with a few of them,” Dan mentioned.

Like a lot of his era, his love for computer systems and programming started early. “I began programming in 1965 in the course of the summer time between my junior and senior years in highschool,” he displays. “I wrote my first real-world utility, a celebration date matching program, in 1966, throughout my senior yr in highschool. As an undergraduate at Rensselaer Polytechnic, I used to be programming to make some cash, however I Was firmly a math main. After I went to graduate faculty at Brown in 1969, I found that I had boosted myself to the extent of my incompetence in math. I observed that Utilized Math had simply began a pc science program Seeing that I used to be nonetheless able to that, I went into Pc Science. Throughout my undergraduate research, Brown modified from giving a PhD in Utilized Math with a focus in Pc Science to a PhD in Pc Science. given. I used to be the primary, or maybe the second, pupil at Brown to get a PhD In pc science.”

Dan earned a bachelor of science diploma in arithmetic from Rensselaer Polytechnic Institute in Troy, New York, in 1969, adopted by a PhD in pc science from Brown College in Windfall, Rhode Island, in 1974. He by no means bothered to get a grasp’s diploma as a result of he knew he needed to be a professor.

Whereas writing his doctorate, Dan joined the pc science division on the College of California, Los Angeles in 1972. He was the primary school member at UCLA with a level in pc science. Different school members have been mathematicians, physicists, chemists and engineers who used and have become accustomed to computer systems of their native fields.

“Within the seventies, after I began changing into a professor at UCLA, everybody taking CS lessons was there as a result of they beloved computer systems and programming,” he remembers. “The scholars and school have been actual stay pc geeks. College students needed to programming task. There was nothing to keep away from them, because it was the one approach you can achieve entry to the pc. Pc science departments often had one, giant pc. You may’t simply go over it and begin utilizing it. You need to have a motive, and a programming task was a great motive.”

UCLA is, in fact, additionally the birthplace of the Web, and Dan arrived in 1969, simply three years after it was launched.

Dan reminded, “UCLA is the place APRANET, now the Web, was born. Len Kleinrock, a college member, was a serious developer of ARPANET, and the inventor of TCP/IP, Vint Cerf, was a pupil, who had simply graduated once they arrived at UCLA. Steve Crocker, Charlie Kline, and John Postel—all pioneers in constructing the Web—have been all at UCLA on the time.”

The expertise of history-making moments at UCLA should have been within the playing cards because the college additionally pulled off a collection of seemingly inconceivable victories throughout this time.

“I loved watching UCLA soccer on the Coliseum,” Dan mentioned. “However one of the best, in fact, was watching UCLA basketball, particularly on the time. It was unbelievable. UCLA’s head basketball coach, John Picket, was one of the best coach for any faculty sport in any faculty in america. He led the Bruins to seven consecutive NCAA March Insanity championships. Since then no coach has completed higher than back-to-back victories. I used to be there within the final half of that successful streak.”

After 15 years at UCLA, Dan joined the School of Pc Science in Expertise in Haifa, Israel.

“I beloved being at UCLA, however I joined Technion as a college as a result of I needed to stay in Israel and since I felt I might make an even bigger distinction than I can in America.” Whereas at Technion for 11 years, he labored half-time for 4 years on the Software program Engineering Institute at Carnegie Mellon College in Pittsburgh.

“CMU’s Faculty of CS needed to start out a grasp’s in software program engineering program,” Dan mentioned. “I had already moved into the brand new subject of Necessities Engineering at this level. This system ought to have had a Necessities Engineering curriculum. So, I joined the SEI group that prototyped the MSE diploma program for the Faculty of CS. particularly to develop the necessities engineering curriculum. The curriculum we educate at the moment follows the identical core curriculum I established – 50 % of what I educate in CS445 and SE463 at the moment. Based mostly on the core curriculum.”

In 1998, Dan moved to Canada to affix the College of Waterloo, the then Division of Pc Science.

Those that have labored with Dan know that his listening to impairment limits his notion to sounds under center C, making the language spoken to him comprehensible by all however ear. Is inconceivable. He communicates simply face-to-face, utilizing a mix of lower-pitched sounds he can hear in addition to lip studying to grasp spoken English.

“Virtually everybody in Israel speaks English as a second language I acquired from faculty, so I might have gotten it, however I might by no means be taught to lip-read Hebrew,” he mentioned. “I loved my time at Technion, however as a result of it was exhausting to speak with folks in Hebrew, I made a decision to maneuver again to a North-American-English-speaking place in North America. However I additionally made a nonstop journey to Israel. Needed to be inside flight in order that I might journey simply. And I needed this place to be protected and reasonably priced. It meant Jap Canada.”

Since coming to Waterloo, Dan’s analysis has centered totally on engineering necessities.

“We’ve got found that the shortage of fine necessities specs for software program – that’s, a whole description of the software program you might be creating – is the principle explanation for software program defects. My present analysis is making an attempt to establish the character of these necessities. whose failure to implement the software program fails. It seems that almost all of those lacking necessities, about 70%, are associated to dealing with unavoidable exception situations for already applied necessities.

Curiously, this usually implies that greater than 90 % of the code is required to deal with exceptions that happen lower than 10 % of the time. The much less frequent and extra ambiguous an exception is, the extra code is required to deal with it.

“The massive downside is that usually within the title of agility and launching software program earlier than competitors, it’s developed with out spending the time to establish exception conditions.” Dan, his college students and colleagues attempt to establish the the reason why engineering is just not wanted in apply within the business, the results of that failure, and methods to repair it.

Relating to educating, Dan says, “I’ve realized quite a bit from my college students in any respect ranges. I attempt to not give the topic of my curiosity to any pupil. With such a topic, it is extremely tough Me The topic is to not impose my concepts on methods to be pursued, and it doesn’t bode properly for the coed. I really like that college students come to me all excited a couple of subject Boy or woman chosen and taught Me all about it.”

Image showing key moments in Daniel Berry's career

Key moments in Daniel Berry’s profession.



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