Journal of Statistical Software
JSS
July 2004, Volume 11, Issue 4.
http:/www.jstatsoft.org/
Evaluating the Normal Distribution
George Marsaglia
Florida State University
Abstract
This article provides a little table-free C function that evaluates the norma

The system of ordinary differential equation given in the paper present two species food chain model,
which describes a prey population y which serves as food for a predator w. The rate equations for two
components of the chain population can be written a

Part(a)
The following figure shows a simple submarine
moving with velocity V alog X direction.
The drag force will be
D = (1/2)*Density*V*V*Cd*A
The equilibrium velocity is Vm
That means force generated by the propeller at
velocity Vm is equal to the drag

NAVAL
POSTGRADUATE
SCHOOL
MONTEREY, CALIFORNIA
THESIS
STATE-SPACE MODELING, SYSTEM IDENTIFICATION
AND CONTROL OF A 4th ORDER ROTATIONAL
MECHANICAL SYSTEM
by
Jeremiah P. Anderson
December 2009
Thesis Advisor:
Second Reader:
Xiaoping Yun
Alex Julian
Approve

2.14 Analysis and Design of Feedback Control Systems
State-Space Representation of LTI Systems
Derek Rowell October 2002
1
Introduction
The classical control theory and methods (such as root locus) that we have been using in class to date are based on a s

CIEG 305
CHAPTER 1 HANDOUT EXAMPLE FOR FINDING STREAMLINE PATTERNS
Suppose we have a velocity field given by
r u = Uxi + Uy . We can calculate u,v at a bunch of (x,y) positions but that is tedious. j Instead, we can picture the flow field by calculating s

Parameter Estimation of the Hybrid
Censored Log-Normal Distribution
Sulabh Dube Biswabrata Pradhan & Debasis Kundu
,
Abstract
The two most common censoring schemes used in life testing experiments are Type-I
and Type-II censoring schemes. Hybrid censoring

Wind turbines
Sren Gundtoft
1
Foreword
Wind Turbines
- Design of an optimal rotor i.e. pitch angle and chord length of the
blades and how to calculate the power production
- Including a spread sheet model in Excel and an EES-model for the
calculations
Th

2.1 Proportional Controller, Kp=0.5, 5, and 50
P(s) =
The open loop transfer function is given by:
G(s) =
The closed loop transfer function is:
=
Assume unit-step R(s) = 1/s
b). The transfer function for the error signal is given by:
E(s) = R(s) Y(s) = (1

ESAII-RR-02-05
January 2002
A discrete-time controller design method to
tolerate non-equidistant sampling and actuation
Pau Mart, Ricard Vill, Gerhard Fohler and Josep M. Fuertes
A discrete-time controller design method
to tolerate non-equidistant samplin

Additional Lecture Notes for the course SC4090
Discrete-time systems analysis
Ton van den Boom
October 2, 2006
2
Contents
1 Introduction
1.1 Discrete-time versus continuous-time . .
1.2 Sampling and Interpolation . . . . . . .
1.3 Discrete-time systems .

A fast and accurate
method to determine
aerodynamic forces
on airfoils and wings
A quasi-simultaneous interaction method is
applied to determine aerodynamic forces in a
fast and accurate way. The interaction law
equation ensures that no singularity arises

1. General properties of hydrocarbons
Crude oil is a flammable, viscous liquid, primarily of dark colour. It comprises a
complex mixture of hydrocarbons of the following groups: methane (paraffin) - CnH2n + 2
(alkanes)*; naphthene - CnH2ni (alkynes)*; aro

Discrete Systems
Mark Cannon
Hilary Term 2012
0-1
Lecture 4
Step response and pole locations
4-1
Review
Denition of z-transform:
uk z k
U (z ) = Zcfw_uk =
k=0
Discrete transfer function:
Y (z )
= G(z ) = Zcfw_gk ,
U (z )
gk = pulse response
Construct a d

Discrete models of sampled data systems
31
4
4.1
Discrete models of sampled data systems
More on z-transforms
4.2 Properties of the z-transform
4.2
32
Properties of the z-transform
Let F (z ) = Z f (kT ) =
f (kT ) z k , then F has the following properties

STATIC SYNCHRONOUS SERIES COMPENSATOR FOR LOW
VOLTAGE RIDE THROUGH CAPABILITY OF WIND ENERGY
SYSTEMS
Sijoy Raphael and A.M. Massoud
sraphael@qu.edu.qa & ahmed.massoud@qu.edu.qa
Dept. of Electrical Engineering, College of Engineering, Qatar University, Qat

Chapter 2Wind Characteristics
21
WIND CHARACTERISTICS
The wind blows to the south and goes round to the north:, round and round goes the wind,
and on its circuits the wind returns. Ecclesiastes 1:6
The earths atmosphere can be modeled as a gigantic heat e

Chapter 3Wind Measurements
31
WIND MEASUREMENTS
God made a wind blow over the earth. Genesis 8:1
Measurement of wind speed is very important to people such as pilots, sailors, and farmers.
Accurate information about wind speed is important in determining

Chapter 4Wind Turbine Power
41
WIND TURBINE POWER, ENERGY, AND TORQUE
Who has gathered the wind in his sts? Proverbs 30:4
Gathering or harvesting the wind has been of concern to man for a long time. As mentioned
earlier, wind turbines have been used for s

Chapter 5Electrical Network
51
WIND TURBINE CONNECTED TO THE ELECTRICAL
NETWORK
He brings forth the wind from His storehouses. Psalms 135:7
Only a few hardy people in the United States live where 60 Hz utility power is not readily
available. The rest of u

Chapter 6Asynchronous Generators
61
WIND TURBINES WITH ASYNCHRONOUS
ELECTRICAL GENERATORS
He gave the wind its weight. Job 28:25.
In the last chapter we discussed some of the features of wind turbines synchronized with
the electrical grid. There are a num