jeudi 27 décembre 2007

Freerice.com

Hi again!

this time, I want to introduce you to a nice website I have discovered:
http://freerice.com
This is a wonderful site where you can improve your knowledge of english vocabulary and at the same time, help reduce world's hunger!
How on earth is that possible you might ask? Well, basically each time you find a good answer, Free Rice donates 20 grains of rice to the United Nations World Food Program.
However, the game is not easy by any means, above all for a non native english speaker such as myself. Each time you make 3 good answers in a row, you "gain" a level, and when you make one mistake, you are down one level. My personal record is level 43, but I tend to hover around level 40-41 most of the time.
Still, it's nice to know that you can waste your time on the internet and help fighting for a good cause.

I found Free Rice.com in the blog of Patrick Rothfuss (http://www.patrickrothfuss.com/blog/blog.html) who is a new sci-fi author and a promising one it seems. His first book, The Name of the Wind, is doing pretty well so far.
I haven't had time to read it yet since I have to read the whole Memory, Sorrow and Thorne series, and I am stuck at the first book, mainly because I don't really like the beginning, but also because I have so many things to read. For instance, I am reading a very good book called " A demon of our own design"


written by a risk manager in Wall street (formerly at Salomon for instance). It gives a great insider's perspective on some crisis, such as the 1987 one. Still, he might be tad pessimistic (one might say realistic...) at times about finance's future prospects.
Additionally, I have to study many books, such as the famous Hull:



or a less well known:
which are not books you can read and digest in a few hours (especially the latter).
Anyhow, when I am done with Memory, Sorrow and Thorn, I plan to read Rothfuss' book.

Merry christmas to all!

Well, it's been a long time, but I have been really really busy lately between the internship and my courses. Indeed, I spend the first three days of the week working as an assistant Fund analyst in a subsidiary of BNP Paribas Asset Management. The job is not too difficult for the moment, but I tend to finish a bit late (around 7-7.30 p.m). Hence, it is a bit difficult when I have to study after work since I am not back at home before 8 p.m. Above all since I have some courses in Finance from Thursday to Saturday (only 3 hours on Saturday) and time is also scarce during the week-ends. Recently, before the winter break, I had 3 exams in 3 weeks so that I haven't really had time to do anything else than work. At least, my exams went well, even though it was a bit weird to switch from being the one giving exams to doing the exams! Also, I am more used to typing than writing now, so that I tend to write more slowly now and I tire more quickly when I write. I guess I will get used to it.
As a whole, next year is going to be pretty tough I think, since we have a lot of exams planned, and a few dissertations also.
At least, I get to learn many things.

On the geek side, I think the forthcoming year is going to be pretty calm for me. First, because I won't really have the time to sell/buy stuff, to look at reviews on the internet, compare prices...all the things that take time. Second, I think I have found a kind of equilibrium: I have had an iphone for a month now, and even though there are things that bother me (such as the fact that there are no word counter for text messages, or that you can't delete a single text message...), it is pretty cool, and I don't see myself switching back to another phone. Maybe the next generation iphone. As to my laptop, I also really like my Toshiba R500, even though it also has a few flaws. The thing is, I don't really have that much time to use it anymore: I don't bring it to work, and I seldom use it at school; hence, I clearly don't need to get a new laptop. That might change if Apple finally releases a small 12"1 laptop weighting less than 1.5kgs (around 3.2 pounds)...but I don't think they will do that anytime soon.
I might get a new camera though: I was considering buying the Sony T200 instead of my Panasonic FX9. Still, I won't have many opportunities to make some interesting pictures next year, so that I am still a bit reluctant to buy it.
Of course, this is good news for my wallet and it will compensate all the stuff I have had to buy for work, like a few suits, ties, shoes, socks...

Given that I have lacked time recently, I don't have anything particularly interesting to share, except for a website that I have doscovered recently: www.freerice.com.
But it will be the subject of another post!

See you.

mardi 16 octobre 2007

Resizing pictures in batch under Linux!

Hi to all!

I have discovered a very easy way to resize a bunch of pictures using Linux.
First, you need to install imagemagick:

[CODE] sudo apt-get install imagemagick [\CODE]

Then, what I did was to copy all the pictures I wanted to resize into a temporay folder.
Finally, using the command line, I went to the previous folder, and typed the following:

[CODE] mogrify -resize 800x600 *.jpg [\CODE]

and all the pictures were resized.
Of course, you can choose any size you want. Instead of"mogrify", you can use "convert" which does not replace the picture but instead creates a new one with the desired size.

You can also rotate pictures. For instance:

[CODE] mogrify -rotate 90 picture.jpg [/CODE]

where "90" is the number of degrees you wish to rotate picture.jpg.

Here is a link with more infos on imagemagick:
http://polishlinux.org/apps/graphics/enchanting-pictures-with-imagemagick/

samedi 15 septembre 2007

Wow: more than 1000 visits!!!

Against all odds, I have crossed the 1000 visits mark a few days ago!
It is still a small blog, but I am happy that people come to visit it.
When I look at my Clustr Map, I even see people visiting from places I don't even know!

From now on, I will try to update my blog more regularly, but not next week since I am leaving for one week to Egypt!
Hopefully, I will have some pretty pictures to upload when I am back. However, I am going to Taba, which seems to be far from pretty much everything, so that I guess I won't get to see the pyramids.
I will focus on landscapes pictures then.

samedi 8 septembre 2007

Review of the new Toshiba Portege R500








Presentation

I have recently got the new ultra laptop by Toshiba, the Portege R500. I got it in Japan, and it is a non-standard version since its only a 1.06 Ghz processor, with no bluetooth, and no DVD writer. That way, it is the lightest 12" notebook available at under 1 kg (i.e. 2.2 pounds). It is even lighter than the 11"1 Asus U1F or the new Sony Vaio TZ!
As you can see in the pictures, it is also quite thin, at least as much as my former Asus U1F. It is also, of course, a bit bigger.
Compared to the U1, the packaging is quite scarce; you only got one battery (vs 2 for the Asus), no case...But, it only shows that Asus has really outdone itself with the packaging of the U1F.
In my opinion, the R500 is not as pretty as the U1, but it is of course, subjective. The biggest advantage of the R500 is that it does not have this glassy-style coating on the top, which, albeit very cute and styly, attracts fingerprints as much as honey attracts bears. The R500 is still a nice-looking machine.

Performances

This is where the R500 shines compared to the other ultras and to the U1F in particular. Indeed, more subnotebooks such as this one use a 4200 rpm hard drive, which tends to reduce performances a lot. In the R500, there is a 5400 rpm hard drive, and boy, what a difference it makes!
It boots more quickly (around one minute for linux), applications open up more quickly, transfers of files are quicker...
Even though the U1F and the R500 have the same processor, the R5OO just feels faster.
As to battery life, I have to admit that at first, I was a bit disappointed since with the Wireless on (no BT and no DVD drive), brightness set to 50% and while doing some light editing and web browsing, the battery lasts around 4 hours and 15 minutes under Linux. I guess it is a bit higher under Vista without Aero and the widgets.
Of course, more than 4 hours is a lot, but I was expecting more. However, one has to remember that this is only the so-called lightweight battery. Thus, I guess I will have to get the large battery when it is available if I want to be able to use it for one day of work without the need for the ac adpater.

The downside of having such a thin laptop and using a 5400 rpm HD is that the R500 tends to heat up rather quickly on the left-hand side (I guess where the hard drive is), but it remains ok. Consequently, the fan is almost always on, but is not too noisy. Still, in a quiet environment you definitely hear some noise.

On to the screen, which has received a lot of attention in different reviews. First, note that this is a mat screen and not a glossy one which means that it is easier to use outdoors, but that it is less appropriate for watching movies. Moreover, the lateral viewing angles are pretty limited, meaning that no more than 2 people can watch the screen at the same time; given the size of the screen however, I think it is ok all the same.
To conclude on the screen, I must say that it is not as bad as some people had it: I use my R500 a lot, and I have never had any problems with the screen yet. As I said, watching movies might be a bit difficult, but I have been able to watch a few without difficulties; the key lies in a good positionning of the screen.
I have not really experimented with the special "outdoor feature" of the screen since I am using Linux, and it does not work on Linux.
This is a great transition ta talk about Linux on the R500.


Linux

As I have just said I use Linux on my R500. Why Linux over Vista?
One great asset of Linux compared to Vista IMHO, is the more efficient use of RAM. Indeed, under Kubuntu Feisty, the starting memory usage is around 180 Mb, out of my 1000. With Firefox open (a few tabs and a few extensions), Thunderbird and emacs it rises to 310, and with a 760 pages pdf, to 360 Mb. It means that, indeed, under Linux, 512 Mb are quite enough for a reasonable use. Moreover, note that there are lighter desktops than KDE, and Firefox and Thunderbird are both memory hogs, which means that using Linux on old computers is really a good idea. With my R500, Linux is a lot faster than Vista.
Moreover, Vista is just XP with a new GUI (Aero) basically, and XP is quite an old OS. It does not stand the comparison with Linux. Even the 3D Aero is really laughable compared to the real 3D effects one can get with Compiz Fusion under Linux. So, even though

How does Linux fare on the R500? Quite well I must say. The beginning has been a bit rough, since I have tried many distros before finding the one that most satisfies my needs. I have tried Kubuntu Gutsy beta, Open SuSe 10.3 Beta, Fedora 7, Linux Mint 3.0 (I used this one on my U1F, but strangely, the installer crashed every time I tried to install Linux Mint on the R500...), Sabayon Linux 3.4e, PCLinuxOS2007...Each of these distros had something that I disliked, or didn't worked the way I wanted it to work. Sabayon was quite good, but it is Gentoo-based, and compiling from source is just tooooooooooo slow for my liking: I erased Sabayon when the install of Thunderbird took more than 30 minutes. Finally, I settled on Kubuntu Feisty 7.04 which does a good job at recognizing the hardware: the only things that do not work from scratch are the fingerprint reader, the outdoor button, and the SD card reader. I also have some issues with the brightness buttons that do work, but behave strangely. I don't really care about the fingerprint reader, the lack of SD card reader was a pain when I was in vacation, but it is not very important. I forgot to say that the little button on the left side of the R500 that allows to increase and decrease volume does not work from scratch, but I have been able to make it work thanks to xmodmap and xbindkeys...and some help!
This is THE weakness of Linux IMHO: it does a good job at recognizing most of your hardware, but when something does not work, it is a pain to make it work. I mean, even though I am not a Linux expert, I don't think I am an average computer user, and still, I have had some difficulties solving those problems. For instance, I haven't yet found how to make my SD card reader work. Of course, there is a lot of help available over the web, above all for ubuntu, but still, I think it remains a bit complicated for the average Joe (lot of command line involved...).
To conclude on Linux, I must add that I have a problem with my Vista partition, so that I can't access it now. But it's ok, I don't really care.
In any case, I am going to install Virtualbox and have a virtualized version of XP directly in Linux for stuff like Illustrator of Excel (yes I know there is Open Office, but the Spreadsheet does not handle VBA well, and I will need VBA next year) or chess programs. Maybe iTunes also.


Conclusion

Overall, I am happy with this purchase. The U1F was a lovely machine, and the R500 is a worthy replacement. The only thing I might want now is a SSD drive to improve performance once again.
But I will wait prices have gone down a bit, since I will need at least a 64 Gb one, which costs something like 900 dollars right now!


EDIT: A few additions

First, After using the Toshiba for watching movies during my holidays, I can confirm that the angles of vision are pretty limited. However, it is still possible for two persons to watch a movie end enjoy it.

Second, I have just discovered that I can adjust the brightness of the screen by hovering over the Knetworkmanager icon (under Kubuntu) and using vertical scrolling. Since I had some issues with the Fn+F6 and F7 keys, this is great discovery for me.

Third, I still have a few issues with my keyboard, since, when I type very fast, it tends to behave erratically. For instance, sometimes, if the insertion point of the mouse is not located where I am typing (that is, pretty much all the time) instead of typing where I want to, it types at the insertion point, which is generally located somewhere else in the text I am typying. This is very annoying, and I really don't understand why it is behaving this way.

mardi 31 juillet 2007

Asset Management it's gonna be!

Yes, I have been selected for the Master Asset Management in Dauphine, so, I guess that's what I am going to do next year.
Hence, I will spend the summer reading books such as these:






Above all the last one, since I think I will specialize in Alternative Investments like Hedge Funds.

lundi 2 juillet 2007

Being interviewed...again!

Yes, since I have decided to give my future career a less theoretical and more practical direction, I have applied to two masters: one in "Financial Engineering" and one in "Asset Management".
I have been selected for an interview for both masters, and the first one takes place on Wednesday.
Hence, I am quite busy reading financial economics, corporate finance, asset management...books since my knowledge on these topics is pretty limited: indeed, when I look back at my formation in economics, I was a bit surprised to see that it was very weak in finance. I have never delve into the specifics of financial markets, options, derivatives and the likes. Luckily, the literature on these topics is quite vast so that I expect to be able to learn what I didn't during my previous studies. Of course, there is a lot of information to be digested, but I think I can do it!

See you soon for the results!