अमन्त्रम् अक्षरम् नास्ति, नास्ति मूलमनौषधम् ।
अयोग्यम् पुरुषो नास्ति योजकस्तत्र दुर्लभ :।।
(मन्त्र नभएको अक्षर छैन, औषधि नहुने वनस्पति छैन, योग्यता नभएको मानिस हुँदैन, अभाव त तिनलाई सही उपयोग गर्न सक्ने व्यक्तिको मात्र हो ।)
Monday, March 16, 2009
Why TCP without Selective Acknowledgments can only recover from a single packet loss per round trip time?
Even though multiple packets lost in the same transmission window, the sender considers the fist packet that was lost from the duplicate acknowledgement it received. After retransmission of the lost packet, the sender has to wait for the acknowledgements from the receiver for the next lost packet. So, if Selective Acknowledgements is not implemented TCP can only recover from a single loss per RTT. The Selective Acknowledgment option for TCP allows each acknowledgment to specify up to three contiguous blocks of data that have been received beyond the last packet in sequence. The sender can thus infer which packets have been lost and retransmit them without waiting for additional duplicate acknowledgments.
Thursday, March 12, 2009
Shri Baglamukhi

On the right of Bagala is the Maharudra, with one face, who dissolves the universe.
Jai Ma Ta Di
Tuesday, March 10, 2009
With some Split TCP schemes, a data packet can be acknowledged without first reaching its destination. Why is this a problem?
It is a problem with some split TCP scheme because it is a kind of violation of end-to-end TCP semantics. In fact, an acknowledgment originating from the wireless gateway may reach the sender before the corresponding data packet reaches its destination. In case, if the gateway crashes after the acknowledgment has been returned to the sender but before the data packet has reached the receiver, the sender will incorrectly assume that the packet has reached its destination safely.
There is another issue with some split schemes is that wireless gateways face significant overhead as packets must undergo TCP processing twice.
There is another issue with some split schemes is that wireless gateways face significant overhead as packets must undergo TCP processing twice.
Sunday, March 8, 2009
Kathmandu is 5th worst livable city in the world
Although this data is a bit old (as of 2006), the Economis says with high crime, more threat from instability or terrorism and a poorly developed transport and communications infrastructure, Kathmandu is the 5th worst liveable destinations in the world. The 5 top worst liveable cities surveyed by the Economist Intelligence Unit are Aligiers, Dhaka, Lagos, Karachi and Kathmandu.
Saturday, March 7, 2009
Why A Unique rather than An Unique?
Why "a unique" NOT "an unique..."? When a "u" word is pronounced as though it begins with a "y" (yoo-ni-que), it's treated as a consonant sound of the y. e.g., a university, a usual day.
Thursday, March 5, 2009
Blagamukhi close view
This Bagalamukhi Mata's temple is in Patan, Nepal. There are a lot of devotees in Thursday. There are many other temples near the Bagalamukhi temple. e.g. Kumbheshwor, Dakshnkali, Kali etc. Since 5-7 years, there are many long lines of devotees. The main reason of this is devotees do puja themselves in Bagalamukhi mandir.
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