Dynamic Memory in Cplusplus.Com
Saturday 31 March 2012
Tuesday 27 March 2012
22 Year Old Professor -- A New Record
Lu Liu(刘路),a 22-year-old Maths genius, who is studying at Changsha-based Central South University(CSU), was appointed as a professor at the university, making him the youngest professor in China. At the same time, he was awarded 1 million yuan funding, half which is for updating his research environment and half for improving his living condition.
His main achievement is solving the two-decade-old Seetapun Enigma in Maths.
Some other famous the youngest professors in China:
Tao Zhou 27-year-old, University of Electronic Science and Technology of China
Quan Yuan 28-year-old, Wuhan University
Ning Yang 29-year-old, Peking University
Monday 26 March 2012
Saturday 24 March 2012
Differences between "forward/fd", "jump" and "move-to" in NetLogo
Their common points:
1.All can only be used on turtles;
2.All are for making turtles move.
Their differences:
1. "forward/fd" is followed by a number, which is the number of steps the turtle move forward. "jump" is followed by a number, which is the number of units (like step width) the turtle move forward. "move-to" is followed by a agent, whose position is the destination of moving. So, they control the number of steps, step width and destination of moving respectively.
2. "forward/fd" and "jump" do not change the direction of moving, so you need to set the direction first if you want the turtle to move toward a specific position. But the direction of "move-to" is determined automatically as you set the agent (destination).
3. "forward/fd" and "jump" are more similar and can be interexchanged easily. For example, "fd 6" = "repeat 6 [ jump 1 ]' and "fd 3.5" = "repeat 3 [ jump 1 ] jump 0.5".
1.All can only be used on turtles;
2.All are for making turtles move.
Their differences:
1. "forward/fd" is followed by a number, which is the number of steps the turtle move forward. "jump" is followed by a number, which is the number of units (like step width) the turtle move forward. "move-to" is followed by a agent, whose position is the destination of moving. So, they control the number of steps, step width and destination of moving respectively.
2. "forward/fd" and "jump" do not change the direction of moving, so you need to set the direction first if you want the turtle to move toward a specific position. But the direction of "move-to" is determined automatically as you set the agent (destination).
3. "forward/fd" and "jump" are more similar and can be interexchanged easily. For example, "fd 6" = "repeat 6 [ jump 1 ]' and "fd 3.5" = "repeat 3 [ jump 1 ] jump 0.5".
Friday 16 March 2012
Impressions of Dublin -- things I love most (Ⅲ)
No. 3 Food
I love the food in Dublin just from the aspect of its security, which, I have to admit, is very worrying in China at present. But it is big issues - nobody does not care about her/his own health.
As some of my Irish friend have told me, Ireland is an agricultural country in some extent. It remains a large proportion of agricultural production like planting and farming, so the Irish people can enjoy lots of fresh vegetable (mainly potatoes of course), fruit, eggs, animal food and its sideline production (e.g milk). They plant and produce these food within the country, which allow them to implement the food security standard and control the food quality easily. They do not need to transport these food, which also reduces the possibility of bringing in virus.
Yes, they also import large amount of food. But they mainly import from EU countries, and you know, Europe is always very strict to the food security. So the security and quality of imported food can also be guaranteed.
It feels very good that you do need to worry about the security of food when you buying them in the supermarket, so food is one of things I love most in Dublin.
Travel and Food in Ireland
(Finished)
Travel and Food in Ireland
(Finished)
Friday 9 March 2012
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