Re: Emergency Tech support (re Connex)?

we have two problems: the maintenance of connex (or any software our dept
chooses to use) vs the maintenance of the infrastructure (power, cooling,
raid, backup&restore, etc) that runs connex. uvic systems is probably
better at the latter (and the economy of scale also applies), but our tech
team is really indispensable to help us innovate in our teaching and
research, and to lead the adoption of new (computer) technologies on
campus: i do not know how to convince university systems to add a new
feature in blackboard or moodle, but our tech team is really quick
improving connex (although i still hope connex forum is rss capable ๐Ÿ˜‰
and they are really helpful when we put together the new lab for csc361.
of course, over the years, our expertise becomes commodity elsewhere, but
there are always new frontiers in (computer) technologies

i really hope our faculty and staff members can play more important roles
in uvic upper admin, to help the entire university become more effective
with technologies: if someone can convince grad admissions not to print
out pdf files and then scan them into again, it will save a lot of their
time and ours as well; if we do not need to submit “no change” forms every
year to declare conflict of interest or whatever but do so on demand when
necessary, it can save a lot of time overall—at least save some trees;
also they will no longer tell us “something is not banner-able” ๐Ÿ˜‰ these
will save the university a lot of money. just my two cents

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UVic got top coders!

From Tyler:

“This past Saturday, Feb 5, was the BC Winter Programming Competition hosted by SFU. 57 people participated from around the province, including SFU, UBC, and UVic[, in addition to guests from MIT, Waterloo, Stanford and Alberta schools]. The competition was 3 hours long and consisted of 6 problems of varying difficulty. Competitors could compete individually or in pairs, at UVic we decided to compete individually. 7 students from UVic competed and our top members performed exceptionally well.

Dan Sanders, came in first place in the entire competition and was amazing. He finished in half the time and had single correct submissions for all 6 problems.

Jennifer Debroni, came in 9th place. She solved 5 of the 6 questions.

Scott Porter, came in 18th place, with 4 solved problems solved.

Brodie Roberts rounded out the top 20 with a strong showing of 4 problems solved.

The entire scoreboard can be found atย http://www.cs.sfu.ca/news/events/ACM/scoreboard/ “

The UVic ICPC teams are coordinated by Computer Science graduating grad student Tyler Cadigan (supervised by Stege, Srinivasan and Ganti), who will defend his thesis this Friday, Feb 11, 3pm in ECS660. Cheers!

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Re: Intra-Faculty Research Centre in Advanced Security, Privacy and Information System – Call for Nominations

have you informed us about the composition of the search
committee? i am interested in serving on the committee, not the director.
thanks a lot

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Re: fall 2010 programming contests

i am glad to report that by now we have raised enough money to pay back
the dept (since the dept has now processed the volunteer coach’s claim
form, who will be receiving his money next week) due to the budget cut

thanks a lot to the faculty members who donated cash out of their own
pocket: Zielinski, Whitesides, Miller, Miller, Suleman, Storey, Ruskey,
German, Muller, (sorry if i miss any), and many others stay anonymous

as promised, i’ve added my $100 out of my pocket as well. our dean also
contributed $10, after being convinced that students are not getting a
free trip attending the competition, three (3) hotel rooms are not luxury
for seven (7) students including a female, etc, but our dean pointed out
that a $13.88 dinner on ferry is too excessive for a student (on the way
back after a “brain battle” competition) and asked we not cover student
meals on trip. we will look into this suggestion very seriously

again, thanks to everyone supported in various formats. not help students
excel further fails the goal of any university to “challenge minds, change
worlds.” hope we haven’t disappointed our students. thanks

ps: we are now $10 above the goal, so we do not need to take any donation
further, but if you still want to contribute, please see Karen in the cs
office. all leftover and the cash box are handled by the cs main office

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Dollar Cost Averaging, myth or fact?

Almost all banks prompt the “Dollar Cost Averaging” strategy to their mutual fund customers, e.g., http://helpmeinvest.scotiabank.com/knowhow/win-dollar-cost-averaging

The idea is that a customer should invest in a mutual fund on a regular basis, instead of in one shot. The reason is “Because the stock market goes up and down, your unit price may average out to be lower than it would be if you invested an equivalent lump sum at onetime at the beginning of the year.”

Is the above claim a myth or fact?

Assume the fund unit price is a random variable X and a custom has Ydollars to invest. If the customer invests all Y dollars in one shot, the average number of units he obtains is E[Y/X]. If the customer invests N times and each time invests Y/N dollars, the average number of units he has will be NE[Y/(NX)] = E[Y/X].

Myth buster!

The mistake from the above reasoning is: it assumes that when a customer invests Y dollars, the average number of units obtained by him is Y/E[X] (which is incorrect as E[Y/X]=YE[1/X] which is not equal to Y/E[X]); when invests N times and Y/N dollars each time, the average number of units obtained is Y/N/X_1 + Y/N/X_2 +… Y/N/X_N = Y E[1/X], and as1/E[X] < E[1/X], so dollar cost averaging is desirable (which is a myth).

Here is an example: the mutual fund price is uniformly distributed between $10 and $20 per unit, and the average price is $15/unit. Assume that the unit price is $10, $20, and $15 at t1, t2, and t3, respectively. If we invest $10 at t1, t2, and t3, we get 10/10+10/20+10/15 = 2.1667 units (which is larger than 30/15=2 units). But if we randomly choose a time instance to invest the $30, on average, we can obtain (30/10)/3 + (30/20)/3 + (30/15)/3 = 2.1667 units, the same as the first equal installment investment.

Among the 5 advantages listed in the bank’s website, the only point makes sense to me is ” Smaller investments on a regular basis can be easier than one large lump sum.” Therefore, dollar cost averaging is desirable for lazy investors who do not have time to manage the money.

Posted in uncategorized | 1 Comment

Re: CHINA – CANADA Scholars’ Exchange program

see the message below

also csc has updated this year’s schedule

http://www.csc.edu.cn/Chuguo/67e7e96b4bde4668af18647db6edb1c1.shtml

sorry it’s in chinese only, but the rough schedule is

  • conditional offer from foreign schools by feb 20
  • students to apply at csc by march 25
  • notification by may 2011

hope it helps

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Re: Graduate applicants supported by Chinese Scholar Council

i had some experience with the csc-uvic program and wrote something to
this list a while ago. i can find out and resend it again

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Re: Donations

please drop by the main office (or the dept meeting next
tuesday) if you want to contribute and help our students. hopefully by the
dept meeting we have raised enough money to payback the balance

also thanks to those who are willing to “cover it all” by personal or
other funds—i will try maxmin approach first. thanks again

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Re: fall 2010 programming contests

for backgrounders—sorry we have wasted too much time in it already

i will put in $100 as the donation (unfortunately they don’t need a name
for another faculty newsletter ๐Ÿ˜‰ so we are basically raising the fund to
cover tom and sue’s share. thanks a lot again

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Re: Faculty Meeting – Change of Date for January 2011

an action item before the faculty meeting tomorrow

i will be collecting donations from faculty members, to pay back to the
volunteer coach (a grad student) who brought two teams of uvic undergrad
students attended acm international collegiate programming contest (icpc)
regional contest on sfu surrey campus last november. due to the budget cut
in computer science, the dept won’t be able to reimburse the coach in full
this year, and our dean won’t be able to cover the balance but wanted the
students to share the cost (which i think is unreasonable, given the time
and effort they and the coach have already put in to represent uvic)

so i have to ask our faculty members to help and donate as you see fit, no
matter big or small. we are about $350 short of paying back to the coach,
who has been waiting for the reimbursement for almost two months. but if
we raise more money, we will save for the competition next year, and i
will ensure your money is used responsibly. sorry we have to ask you to
open wallet again, but i think supporting students is more important

i will arrive ecs660 about 5 minutes earlier. since i have teaching in the
afternoon, i will have to leave earlier. if you want to donate after the
meeting, please give it to michelle. if you are not able to attend the
meeting, please drop me an email and i can collect at the time/location
convenient for you. any help helps. thanks a lot

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