Modulation process

The shaping of a signal to convey information is know  as modulation.

Modulation can be used to represent a digital message as an  analogue waveform.

This is know as keying and several keying techniques exist (these include phase shift keying frequency shift keying and amplitude shift keying )

Modulation can also be used to transmit the information of analogue signals at higher frequency 

This is helpful because low frequency analogue signals cannot be effect transmitted over free space

Hence the information from a low frequency analogue signal must be superimposed on a higher frequency signal (know as a carrier wave) before transmission.

There are several different modulation available to achieve this (two of the most basic being amplitude modulation and frequency modulation ).

An example of this process in action is a DJ'S voice being superimposed on a 96 mHz carrier wave using frequency modulation (the voice would then be received on a radio as the channel 90 FM ) 

 Модуляц хийх үйл явц

 Мэдээг дамжуулан дохио хэлбэртэй болгосныг модуляц гэнэ. Модуляц гэдэг нь аналоги дохиог тоон дохио болгн хувиргадаг. үүнийг тоон модуляц гэж ойлгох ба үүнд фаз солих модуляц давтамж солих модуляц болон агууриг солих модуляц багтана. модуляц нь өндөр давтамжийн аналоги тоон мэдээлэлийг дамжуулна. энэ нь ашигтай яагаад гэвэл хол зайд нам давтамжтай аналоги дохио үр ашигтай дамжигдаж чаддаггүй. ийм учираас мэдээлэлийг дамжуулахийн өмнө нам давтамжийн аналоги дохионоос өндөр давтамжийн буюу зөөгч долгион луу хөрвүүлэгдэх ёстой. модуляцийг гүйцэтгэх хэдэн арга байдаг.

If i were a teacher

If I were a Teacher

When I was young, I was fond of playing the role of a teacher. I would imagine aclass of children in front of me, a black board on the wall and myself - an ideal teacher.Everything was imaginary except the ruler in my hand.If I were a teacher, I would give greater importance to example that to precept. Iwould make the children understand the worth of polite speech and decent behaviour. I wouldnever go late to class, i would avoid taking casual leave as far as possible.When I would enter the class I would bid them the time an expect them to bid me inreturn. ‘Good morning, children’ would be the beginning of the day. I would plan the lessonwell and ensure that every child had understood the day’s topic. I would give special attentionto the weaker students, unlike some teachers who only care for the clever children andneglect the below average ones. I would consider it my duty to analyse and solve the problems of every child without any partiality.I would not approve of learning by heart. I would try to make every lesson interesting by giving practical examples from every day life. The children would be encouraged tocollect information from newspapers and magazines. I would encourage the children to participate in games, sports and cultural activities.It would be my principle never to make any personal remark which would hurt anychild’s feelings. I would never tolerate selfishness, rudeness or dishonesty. I would encouragethem to love their home members and their friends, and make them happy.Throughout my career as a teacher, my air would be to instil in every child real andnoble values of life and mound him into a responsible and productive citizen of the world.

DOs and DONTs

DOs and DONTs

Every year during the fall semester, I receive hundreds of e-mails from eager students inquiring about graduate school at Penn’s Graduate School of Education. As I am a firm believer in responding to every student who contacts me, I answer each one (I remember what it was like to e-mail faculty and not get a response).

I usually give the same advice to all students—some get more than others, depending on their questions. Most of the questions are about the graduate student essay, including what to write and what not to write. I thought I’d make a list of my do’s and don’ts for graduate essays. Feel free to disagree or add to my list.

MB’s Dos and Don’ts:

• Don’t quote Dr. Seuss in your essay or any other children’s characters. I love Dr. Seuss but I’ve read at least a hundred essays with Dr. Seuss quotes—they’re not new.

• Don’t write a general essay. You need to write for the program and school. They all have a different flavor and a bland, generic essay is very obvious to faculty.

• Make a connection with a couple faculty members in the program of interest. Show the ways that you connect to their work and what you hope to learn from them.

• Have an idea in mind in terms of what you are interested in conducting research on but don’t be too rigid. Remember you are going to graduate school to learn and open your mind.

• Don’t say you are interested in everything that every faculty member in the program does. That’s impossible and will make you look like you’re all over the place.

• Don’t send in an essay with another school’s name in it. Proof read. Please proof read.

• Don’t talk about how your test scores don’t represent the extent of your abilities. Instead, if your test scores aren’t as high as you wish they were, make the rest of your application as stellar as possible. Don’t apologize—shine!

• Do discuss your interests and your reasons for having those interests.  Be concrete and avoid countless abstract thoughts.

• Don’t gush about faculty members with whom you want to work. State your reasons and be professional. Try to avoid the use of “love.” I’m serious.

• Don’t use jargon and big words, especially when you don’t know how to properly use them. Keep your essay simple and straightforward and make your point.

• Remember that a lot of people are applying to graduate school so look for positive ways to make you stand above the crowd.

Good luck!

My secret dream...

My secret dream...

From the day I knew why I came into the world to so far and even in future, which making me different from others. It is a goal, an aim, a direction for my life. It is not strange from outside, but from inside. It is to be a philosopher.

Perhaps no one believes that there has philosopher in such modern society. I have to tell you, however, today's civilization is based on people's labor, yes, and it is, but which is not only on the physical labor, the more important is on the mental labor----the thought. If there is no thought on the earth, what will happen? I can't imagine such a devastating scene and I think no one would be willing to fancy.

What we inherit from our ancestors are wealth, knowledge and dream----our ancesotrs' dream. They devoted themselves to building our society, which was not for themselves but for the descendants. They had viewed it because their society existed some outstanding philosophers. That's why their society had been developed.

There were times when I fall in my knees but the environment and people has been helping me. But still they don't know about it. 
 As long as philosophy exists My secret dream exists...

Essay 1 the person who i admire

The Person Who I admire

  My brother is the person who I admire the most. His name is Byambadorj. When the time comes for help, he is always there for me. Not only he is reliable but kind and demanding. From the time I've been living he's been a great model to copy. If I challenge my skills he's always ready like some wall to overcome... His life can be a good example of a person who has suffered a lot, but never asked for help as asking for help was symbol of weakness for him. He's 3 years older than me.
After all I know him since I was born, but I’ve understand him during last 5 or 6 years. He always advices me  that “Don’t feel helpless in life and laziness is not something you inherit, it's one of your thousands of reasons to give up on some work, sleep or something.
   He said this to me when I was in 7th grade.  And I thought he just wanted me to do his houseworks. But I was completely wrong!!! Now I figured out the meaning of the word... and working my hardest to keep up with him.
Last year he took the IELTS exam and took 7 points out of 9. Now He is in Finland to study more and more. Sometimes I get a feeling that I'll never be able to reach him.  But I'll never give up on something. Those are the things I learned from my brother. 
Those who can drive you to you ambition, who can lead you to light, whom you can trust most..   Those people are the ones.
Finally, the person you admire doesn't have to be yout blood relatives or your friends. Remember that!!!
Love you brother...