Tuesday, October 18, 2011

Death of Armed Police in Nepal due to Blast of Computer

CRT Monitor Health Hazard
i am quite socked seeing the news about the blasting of computer leading to death of police officer at Birgunj, Nepal. especially CRT (Cathode Ray Tube) monitor operates at high voltage and is the energy reservoir. CRT system retains the high voltage energy for a long period of time even if it is shutdown. May be the following literature helps find out the cause of computer blast in Birgunj.

CRT Monitor Health Hazard
Have you ever walked across a carpeted floor and gotten a shock when you touched a doorknob, table, counter, or even another person? that little shock you got was a result of static electricity. It was also many times what is needed to destroy some computer components.
You see, humans can't feel a static shock until it is several thousand volts strong, but it takes less than 30 volts to damage a sensitive computer component, such as a stick of RAM or a processor.
That's why computer technicians and home computer builders have to guard their computers against the deadly ravages of static electricity, as well as take steps to avoid injury to yourself. A shock that you can't even feel can seriously damage your homebuilt computer before you're even finished building it.
Electromagnetics: Some believe the electromagnetic fields emitted by CRT monitors constitute a health danger to the functioning of living cells. Exposure to these fields diminishes by the inverse square law which describes the propagation of all electromagnetic radiation: double the distance, quarter the power. Likewise, the EM energy is also less intense for the display's user than for a person located behind it because the deflection yoke is behind the display's screen and therefore closer to the rear. It is well-known that electromagnetic waves of sufficient intensity can harm human cells (see ionizing radiation) but it is not currently well-established that the weaker radiation commonly emitted by electronic devices such as a CRT has long-term health effects (see Electromagnetic radiation hazard and Bio-electromagnetics).

Ionizing Radiation: CRTs also emit very small amounts of X-rays as a result of the electron beam's bombardment of the shadow mask/aperture grille and phosphors. Almost all of this radiation is blocked by the thick leaded glass in the screen so the amount of radiation escaping the front of the monitor is mostly harmless. The Food and Drug Administration regulations in 21 CFR 1020 are used to strictly limit, for instance, television receivers to 0.5 milliroentgens per hour (mR/h) (0.13 ┬ÁC/(kg·h) (at a distance of 5 cm from any external surface and as mentioned above, most CRT emissions fall well below this limit. Early color television receivers (many of which are now highly collectable, see CT-100) were especially vulnerable due to primitive high voltage regulation systems. X-ray production is generally negligible in black-and-white sets (due to low acceleration voltage and beam current) and virtually every color display since the late 1960s when systems were added to shut down the horizontal deflection system (and therefore high voltage supply) should regulation of the acceleration voltage fail.

Tuesday, September 20, 2011

SANOG18-Impressive towards Securing ISP Networks and Services with IPv6 Deployment for Nepalese ISPs

It’s been almost 7,8 years since I have been teaching Networking and Advance Networking subjects in universities of Nepal. However I am supposed not even perfect in my subject matters what I wanted to deliver practically. Experiences, training, workshop etc are those activities which make us up to date with wide knowledge behind theory only. I became more updated after I joined the IPv6 session of SANOG18 workshop and tutorials (http://www.sanog.org/sanog18/) which was held on 8-16 Sept. 2011 in Pokhara. i really appreciate AI3 SOI-ASIA research project under WIDE university for its intense effort to setup IPv6-Only network in Tribhuvan University, IOE Pulchowk Campus where I am supposed I am the one who setup the IPv6-only Network with v6 enabled Servers (web, mail, Unicast/Multicast routers) first time in Nepal on 2007 after when AI3 announced IPv6 only network in its research network. 

After when I got the idea of v6 Networking with its importance and urgency to migrate, it’s really a challenge for the developing country like Nepal. Keeping in mind, I decided to extend the university network with other universities, research institutions within Nepal. However for me like a normal officer, it’s a dream only. I thought I am not the social worker who volunteers in its profession.
In my previous blog, I had written about government’s passiveness regarding networking deployment (http://baburamdawadi.blogspot.com/2010/01/where-is-nepalese-ipv6-task-force.html). I think we Nepalese are really lacking behind the technologies where neither telecom operators nor ISPs, or government is serious in this matter. But I appreciate the Nepalese team of ISPs and NPIX who conducted the SANOG program successfully in Pokhara. Human resource development is the one major portion where SANOG massively supported and empowered ISP administrators toward migration to IPv6 by conducting workshop and tutorials. I appreciate the sponsorship by NTA. However NTA is lacking behind the rules/regulations/guidelines/framework development, it is an indirect support that at least NTA helps ISPs towards the technology migration by supporting the program. Definitely private and non-governmental parties are one step ahead in every aspect with the government in Nepal where I saw the seriousness in private parties rather the government should be.

Sunday, April 17, 2011

My Diary-2067 (2010/2011)

Stable, the most stable and the exciting year 2067 for me. I found myself almost successful in my every job and activities throughout the year. However I became offset when a pocket picker picked up my mobile during Nepal banda in May. I walked to office by foot during the day so called strike announced by Maoist. Hence I lost my set what I purchased from Singapore during the conference visit. It was a nice Samsung set with so many functionality.

I became quite busy during the whole period of year 2067. The cause was my added responsibilities in my office due to the shortage of human resource in the engineering section of NTA. I am supposed to be a bit more experienced in the event management which I managed a couple of times before while I was in Institute of Engineering (IOE) Pulchowk Campus. I remember the day while on IOE that two times I was able to organize Free Students Union Election through software voting. These ware quite risky events what I had decided to handle and managed all technically. It made me experience what I gained in my life. The event what I followed is workshop “SATRC” (http://baburamdawadi.blogspot.com/2010/08/2nd-international-event-management.html) which was successfully conducted by the NTA team in which I was one of the team member.

Government decided to band porno sites via the ISP network and services. The responsibility was given to me to be a focal point to verify the legality of the sites and issue letters to ISPs. The job became quite tough for me because I hadn’t have the guidelines (Code of conduct) to make sure that any complained site is porno or not.  It was one of the criticizing decisions.

Thursday, January 13, 2011

Learned from Murai Lab: Improve efficiency in office work

Murai Lab, one of the popular internet research labs of Japan founded by Prof. Jun Murai, the father of Internet. The lab is a two story building where the ground floor consists of the network operation center with meeting halls, secretariat room and online class multicasting center. The upper floor is the research center where at least 8-10 researchers continue research on especially new internet technologies with latest IP addressing mechanism: IPv6.


I am writing here just about how the efficiency of office work increase and save the energy of one when you gonna meet your senior/boss/professor or whoever without moving from your table. Guess, in Nepal, what happens if an office has five story building where your boss is on the top floor and you are in the ground or middle floor, almost time to discuss with boss, either you have to use lift to meet him/her any time when he/she calls or use the steps. What if, you gonna meet 8-10 times a day. May be we need more energy for it and time consuming too. Instead of this, we can use phone conversation but sometimes phone conversation only is not effective. Sometime due to concentration in other works may not make the phone conversation fruitful. Hence, either video call or face to face meet is necessary.

So, for time and energy saving in office work, you need to have following: