Ramble on the Internet

SSH: Getting error ssh_exchange_identification: Connection closed by remote host in Cygwin

It is not because of the anti-software as said in the instruction.
Check /etc/hosts.allow out
everyone is denied…


Posted in Software

Physical memory – total cached free

The windows task manager is slightly different from the one in XP. To find out the memory usage, open the windows task manger and go to performance tab. You will see three values for physical memory there: Total, Available and Cache. Use Total to minus the sum of Available and Cache together is how much RAM is “free” for programs to use.

I am finally upgraded


Posted in Software

Skype in Vista Ultimate (Automatic Gain Control) is a pain

There is a known issue with Skype in Vista Ultimate!

Skype 3.0x introduces a new AGC (Automatic Gain Control) feature to adapt the mic level to users’ voice. But in Vista Ultimate, it doesn’t work well. It keeps adjusting the mic level down to zero so that the other end couldn’t hear a complete sentence. Skype 3.1x is said to fix this for Vista, but this is still in beta.

To temporarily solve the problem, go to

Tools -> Options -> Audio Setting

uncheck “let the skype adjust my audio settings”

Restart Skype, and test using the echo123 service.


Posted in Software

My Learning path

At different stages, I encounter quite a lot of difficulties in learning. In reflection, the path of learning in previous years seems to be relatively easy for me. This might be because I have been through. I am always eager to move forwards, because I believe that tomorrow would be better. A lot of memories in the past have faded away. I didn’t particularly make notes for most of them. Only several scenes would flash in my brain.

Somehow, I do feel it is getting difficult to learn. It is such a broad domain, but requires me to focus on the specific topic. It is already uneasy to feel comfortable facing such a huge amount of knowledge and information. Then it becomes so difficult to keep focus and insist on what I am going to carry out. I expect that I reach a point that I could proudly announce that I know what I am doing, but this has never happened yet. I encounter new things every day, or maybe in every hour. I need to do my best to digest it, process it and make it my own. My life cycle becomes reading, thinking, writing, thinking, reading, thinking, writing…This is a process that exercises me everyday. While I am walking along on this learning path, I can only say “Could the storm be stronger!”


Posted in News

Reflection on my return to China

language is central to human mental development in a variety of ways, including showing “how symbolic thinking emerges from the cutlrue and community of the learning” (NRC, 1999)

What I learnt from this holiday is that there is a big gap between the form of my previous knowledge and the structure of my current doing. It was not subject matter. I felt that I had never tried to link my previous knowledge into my current thinking. When I tried to do that, I felt I was actually not capable of doing it. I strongly thought it was caused by language as the presentation of knowledge. I always treated language as the medium to exchange the information and knowledge. I was only interested in presenting my thoughts and assimilating ideas of others. I have been silly that I didn’t realise that language actually plays an important role in constructing knowledge in my mind – that’s how I learn. I try to fill in the gap now.


Posted in News
Next Page »