Introduction to CPM / PERT Techniques
CPM/PERT or Network Analysis is the technique is at times called, developed with two parallel streams, one military and the other industrial.
CPM (Critical Path Method) was the invention of M.R.Walker of E.I.Du Pont de Nemours & Co. and J.E.Kelly of Remington Rand, circa 1957. The calculation was created for the UNIVAC-I computer. The first test was prepared in 1958, when CPM was applied to the development of a new chemical plant. In March 1959, the technique was applied to maintenance shut-down at the Du Pont works in Louisville, Kentucky. Unproductive time was decreaed from 125 to 93 hours.
PERT (Project Evaluation and Review Technique) was introduced in 1958 for the POLARIS missile program by the Program Evaluation Branch of the Special Projects office of the U.S.Navy, assisted by the Lockheed Missile Systems division and the Consultant firm of Booz-Allen & Hamilton. The calculations were maintained so that they could be carried out on the IBM Naval Ordinance Research Computer (NORC) at Dahlgren, Virginia.
The methods are fundamentally network-oriented techniques using the similar principle. PERT and CPM are essentially time-oriented methods in sense that they both move for determination of a time schedule for the project. The important difference between two approaches is that the time approximation for the dissimilar activities in CPM was implicit to be deterministic whereas in PERT these are explained probabilistically. These techniques are known as project scheduling techniques.
In CPM activities are revealed as a network of precedence relationships taking use of activity-on-node network construction
- Deterministic activity times
- Single estimate of activity time
USED IN: Production management - for the jobs of recurring in nature where the activity time estimates can be forecasted with considerable certainty because of existence of past experience.
In PERT, activities are revealed as a network of precedence relationships taking use of activity-on-arrow network construction
- Probabilistic activity times
- Multiple time estimates
USED IN: Project management - for non-recurring jobs (research and development work), where the time and cost approximates tend to be somewhat doubtful. This technique utilizes probabilistic time estimates.
Advantages of PERT/CPM
l Helpful at various stages of project management
l Mathematically easy
l Provide critical path and slack time
l Give project documentation
l Helpful in monitoring and controlling costs
Demerits of PERT/CPM
l Fairly defined, independent and stable activities
l Precise precedence relationships
l More stress on critical paths
Applications of CPM / PERT
These methods have been used in a wide range of problems in industries and have found approval even in government organizations. These comprise
tutorsglobe.com chloroplast assignment help-homework help by online cell organelles tutors
tutorsglobe.com intermolecular forces assignment help-homework help by online atomic structure tutors
Take a quick look at top-rated Educational Psychology Assignment Help foe availing hassle free services round the clock.
Fertilization and gamete formation tutorial all along with the key concepts of Recognition of Egg and Sperm, Sperm attraction-Action at a distance, Acrosomal Reaction in Sea-urchin, sperm-binding protein of mouse zona pellucida, Translocation and Capacitation and Hyperactivation and chemotaxis
Passive Filters tutorial all along with the key concepts of Band-pass filter, Band-reject filter, Notch Filter, transfer function, Low-pass filter, High-pass filter, Amplitude response of high-pass, Phase-shift filter
Theory and lecture notes of Nonlinear Systems-Newtons Method all along with the key concepts of ector Notation, Linear Approximation for Vector Functions, Newton’s Method. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Nonlinear Systems-Newtons Method.
troubleshooting and recitation of the fault in an am receiver - usually two types of faults are occurred in radio receiver. they are - live fault, dead fault.
tutorsglobe.com energy released in nuclear fission assignment help-homework help by online type of nuclear reaction tutors
motion under gravity tutorial all along with the key concepts of concept of projectile, motion of projectile, vertical and horizontal projections, resultant velocity of a projectile, projection at an angle to the horizontal and applications of projectiles
theory of introduction to cpm / pert techniques, cpm/pert or network analysis is the technique is at times called, developed with two parallel streams, one military and the other industrial.
tutorsglobe.com taxes of the central government assignment help-homework help by online direct and indirect taxes tutors
the term ‘percolator’ is invented from the word “percolate” which means to permit water to pass by the coffee grounds for extracting coffee that provides its color, taste and aroma.
tutorsglobe.com mechanism of translocation assignment help-homework help by online translocation of solutes tutors
The action to be taken relies on the size of the transformer that protective relays have operated, whether tripping is accompanied through loud noise, smoke or expulsion of oil from the transformer, etc.
Standard enthalpy of formation tutorial all along with the key concepts of Concepts of Standard Enthalpy of Formation, Calculating the Standard Enthalpy of Reaction
1960315
Questions Asked
3689
Tutors
1454179
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!