Posts

Showing posts from 2007

International Space station

I don't think many would have read the article from IEEE spectrum online regarding the latest failure of three main computers that control the orientation of the entire station. The reason given for the failure might seem a little bit silly but makes people wonder how such a small thing can can catastrophe of large scale. The reason was malfunctioning of dehumidifier. The dehumidifier in the control room should remove the water content from air circulated and keep the machines under condition where the water cannot condense onto any system. The reverse happened and has allowed for condensation. This has caused the rusting of the lead wires that are connected to the back up computers. The back up computers are used to protect the main system when there are spikes introduced in the system due to the power supply from the solar panels which are affected by cosmic clouds. Because of this rusting they became non-conductive causing the backup system not to work but the main system alone

Programming

I have been programming in VC++ for the past 8 hours. I really don't know now what i have programmed and whether this stuff is going to work the way it is desired. My program is a bit complicated one. The VC++ output cannot be immediately seen.This needs to be converted to PARAMICS compatible dynamic linked library files. And using the PARAMICS have to test it. The worst part is the PARAMICS just quits without really informing what went wrong. Hope i don't get much errors this time around. Tomorrow is a crucial day for me. Infact the day i am gonna get crucified. I have a meeting with my supervisor and till this point i don't have any tangible results that could substantially speak of my work for the past few weeks. Hope everything goes well. Will update on what happened tomorrow.

Type-2 Fuzzy logic

Its been a long time now since my last post. I wouldn't say i was busy. As a matter of fact i had lots of time, much more than what i used to have but out of laziness i did not update it. Anyways back to the blogging session, I was thinking about what to write out here. Even though i had written a blog article on fuzzy logic, i thought this topic should be more emphasized upon. The type-1 fuzzy logic is a very primitive type with very less features available in them. Sorry for having assumed that every one knows what type-1 means. When an input is fuzzified using two-dimensions only, it is called as type-1. When another dimension is added to this to increase its fuzzy nature, then it becomes type-2. I really wonder how people think in these ways and come up such beautiful ideas. I would say i am not even 1% of these great people who have invented such methods. But still i am doing my PhD.....Hope i would be able to come up with such an idea that would be appreciated by someone some

Insomniac

I have been lately experiencing a strange phenomenon. I am becoming more of an insomniac. I don't know if this trend is really good as it increases my working hours to 22 to 23 in a day. On the retro, whenever i sleep, i sleep for more than 8 hrs at a stretch. This has thrown my food habbits too in jeopardy. Initially i wanted to keep this blog site a strict scientific and technical discussion one. On the contro, i found the visitors to be near to zero. So thought atleast will make a smal diary for myself to put forward my thoughts and ofcourse blog in any new article that sounds interesting. It was really strange that this serves to help developing english a lot. When i read my first blog, i was really amased by the amount of grammatical mistake that i have commited. Not to mention, the redundancy. I used to creat huge lines without any breaks. I am trying hard to avoid those now. If at all any one go through my blog, do leave a comment if u find my english improving from the day

Clarity of Thought

Atlast, i have got the necessary clarity of thought. I have decided to stay with my studies and continue with my Ph.D. The clarity was achieved because of Bhagavad Gita. It is really a divine book. Your search for solution to any problem never goes unanswered. What is required is an understanding of the internal meaning and ability to apply for your problem. I dont consider myself as a great master of Bhagavad Gita. I have learnt so little from it that i am really ashamed how i could have missed reading a book which is a holy one for us. I have a copy of it commented by Swami Chidbhavananda. The english is pretty descent with clear split of every sloga with its corresponding meaning. If you get a chance to read it, do read it. I would rather say atleast buy a copy and keep it. It will come handy at some time in life.

Dilemma

I am now in the phase of studies which is usually considered as the hardest part. I am in a critical juncture where i have to decide if i am going to continue with my Ph.D or should i finish off with a masters. This is a nagging question that has been hampering my thinking progress for a long time. The decision taking has become so hard because of expectations from others and also to a certain extent my self-ego. I have never considered myself a failure in any phase of my life but now after 25 years for the first time i am beginning to feel the fear of failure. The experience that i have in the scientific field is too specialised but also too short to land a job in a reputed organization which will be able to appreciate my skills aquired.  Combined with all these is the pressure from the professor to show results, which i dont have because of experimental failures. Hope i will be able to get myself out of this dilemma soon enough and become  clear with my objectives.

Fuzzy logic- my take

Hmm....I should really accept the fact that i am a lazy person. Have not been able to put up a blog article for a long time now. Thought today would discuss something about fuzzy logic. This has become the buzz word now-a-days. Every household electrical goods seems to have used fuzzy logic. what big difference this creates when considering the binary world? It makes systems more realistic. Binary systems are either true or false. The degree of truth or the false is not known. This creates anamolies in systems. The simplest form of the fuzzy logic would be antecedant-implication relationship. For example, if you have two different parameters that occur at the same time and have different implications on the systems or decision criteria, then a relationship needs to be generated that could enumerate the exact effect of the parameters under consideration. I would not go any further on this discussion as the fuzzy logic concept is too deep to be analyzed in a simple blog like this.

what can a 10g vibration do to you?

Hmm....What can write about this time??? Thought of putting down what i did today but realized it would be of no use for someone browsing to know about it. Finally decided to write about effects of vibration.  An interesting field of study. Do you know what a 10g acceleration can do to u?? You cannot imagine what would happen as we dont usually experience such high level of acceleration. A stealth could experience upto 5g when it is having a high mach number. But usually the pilots are guarded from such high levels by dampers. You might be wondering why an electronics person is talking about a mechanical phenomenon. I had the opportunity of simulating these high level vibration conditions ( simulation in the sense - real world creation of the environment that would be experienced by the launch vehicles during and after launch). The testing is usually done using Vibartion shaker which is capable of producing 2 tonnes of force. The usual vibration is for qualifying the space vehicle inte

Widgets

Widgets are the new generation advertisement tools developed by the companies that want to promote their products.  The widgets have existed in various names from 1993 onwards. The first commercial attempt was by Microsoft by incorporating ( though as an optional item) in its internet explorer 4.0. What this Widget actually does? These are goodies which promises some value of entertainment or information to the users and also serves to project the products to the masses. There are infact various types of widgets. Desktop, web-based, mobile based. Each one has its own features. Web-based widgets are those which people are commonly utilizing now-a-days, without knowing the technical name for it. Example is yahoo and google. you create a personalized page which shows various stuffs like Climate info, horoscope etc., each one of which is a widget. This does not occupy or consume much of your resource as they are part of a large program and no excessive storage other than the usual cache a

Web Browser

Let me start my blog space with a review of the tool that enables this blogging possible.  Web browsers : An interesting tool that can be a boon or a bane. Internet explorer, the most commonly used browser developed by Microsoft and has become a part and parcel of every net user. This i smainly due to the bundling of this tool with windows ( The most widely used software - atleast for the common people). Most of the hacking and virus spread is by exploiting the vulnerabilities of this tool. It is not sufficiently armed to protect your system from frequent attacks. The internet explorer makes certain ports ( I am not naming them or giving the details as the write up will become more of a technical analysis) open making it easy for the adwares and spywares to be installed. The question is what is this adware and spyware? Are they different from Virus? If so, then how different are they? The answer is adware and spyware are not exactly virus. An adware is created to advertise a product or