CMM level(Capability Maturity Model) focusses on compliance wherase six sigma on performance.
Level 1:Adhoc. No docs and processes
Level 2:Some processes are Repeatable
Level 3: Processes are defined and documented in AS IS
Level 4: Managed: Use process metrics and management can control ASIS. Process capability is established
Level 5: Optimized: It is a characteristic of processes at this level that the focus is on continually improving process performance through both incremental and innovative technological changes/improvements
Six sigma:Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes
Methods: DMIAC
The term "six sigma process" comes from the notion that if one has six standard deviations between the process mean and the nearest specification limit, as shown in the graph, practically no items will fail to meet specifications
Saturday, November 28, 2009
Saturday, September 26, 2009
At US for Cree Project
Back into my US nostalgia as I landed at Newark airport 5.00 EST(3.00 pmIST).
Writing this blog from wireless conn found at Newark airport connecting to Durham.
Really chilled myself with the smell of black coffee(with milk and no sugar), found my song albums of Metalica(Nothing else matters) and Nirvana(polly, smells like teen and other series).
Watched movies , girls and
Writing this blog from wireless conn found at Newark airport connecting to Durham.
Really chilled myself with the smell of black coffee(with milk and no sugar), found my song albums of Metalica(Nothing else matters) and Nirvana(polly, smells like teen and other series).
Watched movies , girls and
Sunday, September 13, 2009
Thursday, July 30, 2009
Diode,triode and capacitor
The most common type of amplifier is the electronic amplifier, commonly used in radio and television transmitters and receivers, hi-fi units, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers.
A vacuum tube is generally used for amplification of signal but nowadays replaced by transistor.
Vacuum tubes consists of a hot filament as cathode, a positively charged hot metal as anode .The cloud of electron flow unidirectionally to anode acting as diode.
A negatively charged wire grid is inserted in between cathode and anode.The more negatively charged, the less caurrent flow.The grid is thus the controller and the mechanism is called a triode acting as an excellent amplifier.
A vacuum tube is generally used for amplification of signal but nowadays replaced by transistor.
Vacuum tubes consists of a hot filament as cathode, a positively charged hot metal as anode .The cloud of electron flow unidirectionally to anode acting as diode.
A negatively charged wire grid is inserted in between cathode and anode.The more negatively charged, the less caurrent flow.The grid is thus the controller and the mechanism is called a triode acting as an excellent amplifier.
Wednesday, July 29, 2009
TCS:Little manager culture
I tried to collect best words available in blogs
1) A IT companies be it TCS, Wipro, Infosys or erstwhile Satyam have an incompetent middle management layer, which due to lack of empowerment from top and due to rapid growth in employee numbers have seen quick growth and now find themselves in positions for which they are not qualified
2) TCS's present plan of lay off looks implausible. It is a blot on the Comapany's image of being 'employee friendly'
3) By the way, associates who dance to the tunes of their managers will still stay with the org with a rating of 5 which they do not deserve
1) A IT companies be it TCS, Wipro, Infosys or erstwhile Satyam have an incompetent middle management layer, which due to lack of empowerment from top and due to rapid growth in employee numbers have seen quick growth and now find themselves in positions for which they are not qualified
2) TCS's present plan of lay off looks implausible. It is a blot on the Comapany's image of being 'employee friendly'
3) By the way, associates who dance to the tunes of their managers will still stay with the org with a rating of 5 which they do not deserve
Market-Bonds,equity,debentures
Bond is simply an 'IOU' in which an investor agrees to loan money to a company or government in exchange for a predetermined interest rate
Coupon is the interest rate the bond pays.
The biggest economic threat to bonds is rising interest rates. If you own a bond and interest rates go up, the value of your bond on the open market, with few exceptions, will go down.
If interest rates go up , the facevalue of bond has to be discounted so that effective yield remains competitive at the same coupon rate.
Coupon is the interest rate the bond pays.
The biggest economic threat to bonds is rising interest rates. If you own a bond and interest rates go up, the value of your bond on the open market, with few exceptions, will go down.
If interest rates go up , the facevalue of bond has to be discounted so that effective yield remains competitive at the same coupon rate.
Thursday, July 2, 2009
How radio Works
A simplest AM radio can be built via a crystal radio.
Four basic components for a crystal radio are: an antenna, a tank circuit, a diode, and a high-impedance earphone.
The antenna is a long wire that projects upward into the electromagnetic fields of the passing radio wave so that electric charges begin to move up and down its length.
The tank circuit is a coil of wire that's connected at each end to the two ends of a capacitor. In a typical crystal radio, one of these items—either the coil or the capacitor—is adjustable and forms the tuning element that allows you to select a particular AM station. The tank circuit is a resonant device—electric charges and current flow back and forth through it rhythmically at a specific frequency. If that resonant frequency is adjusted so that it coincides with the transmission frequency of an AM radio station, the small currents flowing in the antenna that's connected to the tank circuit will excite large movements of charge and current in the tank circuit.
The diode is also connected to the tank circuit. Its job is to extract some of the charge that oscillates back and forth in the tank circuit and to send that charge to the earphone. By allowing current to flow only in one direction, the diode samples the overall amount of charge moving in the tank circuit. What it passes to the earphone is a measure of how strong the radio wave is, which is actually the form in which the AM radio station is transmitting sound information.
The high-impedance earphone uses the diode's tiny charge deliveries to reproduce sound. The diaphragm inside the earphone moves back and forth as the amount of charge passing through the diode fluctuates up and down. Each time the radio wave increases in strength, the diaphragm moves in one direction. Each time the radio wave decreases in strength, the diaphragm moves in the other direction. Thus as the radio station varies the strength of its radio wave, the earphone's diaphragm moves back and forth and it reproduces the sound.
Four basic components for a crystal radio are: an antenna, a tank circuit, a diode, and a high-impedance earphone.
The antenna is a long wire that projects upward into the electromagnetic fields of the passing radio wave so that electric charges begin to move up and down its length.
The tank circuit is a coil of wire that's connected at each end to the two ends of a capacitor. In a typical crystal radio, one of these items—either the coil or the capacitor—is adjustable and forms the tuning element that allows you to select a particular AM station. The tank circuit is a resonant device—electric charges and current flow back and forth through it rhythmically at a specific frequency. If that resonant frequency is adjusted so that it coincides with the transmission frequency of an AM radio station, the small currents flowing in the antenna that's connected to the tank circuit will excite large movements of charge and current in the tank circuit.
The diode is also connected to the tank circuit. Its job is to extract some of the charge that oscillates back and forth in the tank circuit and to send that charge to the earphone. By allowing current to flow only in one direction, the diode samples the overall amount of charge moving in the tank circuit. What it passes to the earphone is a measure of how strong the radio wave is, which is actually the form in which the AM radio station is transmitting sound information.
The high-impedance earphone uses the diode's tiny charge deliveries to reproduce sound. The diaphragm inside the earphone moves back and forth as the amount of charge passing through the diode fluctuates up and down. Each time the radio wave increases in strength, the diaphragm moves in one direction. Each time the radio wave decreases in strength, the diaphragm moves in the other direction. Thus as the radio station varies the strength of its radio wave, the earphone's diaphragm moves back and forth and it reproduces the sound.
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