NIH Public Access
Author Manuscript
Exp Brain Res. Author manuscript; available in PMC 2010 June 10.
NIH-PA Author Manuscript
Published in final edited form as:
Exp Brain Res. 2007 September ; 182(2): 169177. doi:10.1007/s00221-007-0978-0.
Perception of f
THE STRENGTH OF THE HAND
Alfred B. Swanson, M.D.
Ivan B. Matev, M.D.
G. de Groot, M.D.
Orthopaedic Research Department
Blodgett Memorial Hospital
1840 Wealthy Street, S.E.
Grand Rapids, Mich. 49506
INTRODUCTION
Although strength is one of the important ch
ENGS 495
Biomedical Instrumentation
Fall 2015
Purpose of a protocol:
Forces you to think through the entire study prior to taking data.
Allows you to double check that youre collecting all of the data you need to prove your
point (it is a good idea to pla
Biomedical Instrumentation
Research Paper Outline
Research Paper Section Content
Title and Authors
Abstract Write after you finish a draft of the
paper
Sentence or two on motivation/background
A sentence on a challenge/question you address
A sentence
Find initial conditions
()10()
( ) (0) at
dx t
ax t
dt
x t x e + = =
t=0
Series RC Circuit C C dV i C dt =
Switch opens at t=0 after being closed for a long time.The Natural Response (RC)
()()001()
t
RC V t V e V c c c = =
Vc(t)
t(ms)
0.368*Vc(0)
Time co
Inductors
Moving charges produce a
magnetic field.
This magnetic field can
induce current in adjacent
conductors and resist
changes in current in the
primary conductor.
Field can be increased by
using coiled wire and
certain material core.
IP
IS
Induct
Summary of Complex NumbersPhasor Circuit Analysis
So, now we know about complex numbers
We can convert sinusoids into similar forms.
Whats the point?
This helps make AC analysis of RLC circuits EASY!
Need one more thing
Impedance Complex Resistance
RLC Circuits
Chapter 9
Exam next WednesdayLC similar to a Pendulum
L
C
L
C
+
-L
C
+
i
L -Conventional current.
Momentum->Kinetic Energy
Potential Energy
h
Potential Energy
hRLC similar to spring, mass, damping
http:/phet.colorado.edu/sims/mass-spring-lab
Capacitors vs Inductors
Open DC Short
Short HF Open
V
C cant change i
L
instantly
()
L
(
)
L
di t
vtL
dt ( )
=
C
(
)
C
dV t
itC
dt
=
1
2()()
2
W t Li t L L =
1
2()()
2
W t CV t C
C
=Types of DC responses
Natural Response
Initial voltage on Capacitor or
Final Exam Topics
2 sides of notes
Focusing on material since midterm exam
AC analysis (phasors, equivalent circuits, average power,
power transfer, identify components, phasor diagrams)
Diodes
Transistors-Determine operating region
Basic concepts f
*
Introduction to Engineering:
Functions, Components, &
Systems
John Krupczak, Jr.
Hope College
Fall 2010
*
*
*
*
*
*
(5) Main Idea
Overall function accomplish
through subfuctions
Subfunctions provided by
components
Components combine to form
systems
(5)
*
Introduction to Engineering:
Functions, Components, &
Systems
John Krupczak, Jr.
Hope College
Fall 2010
*
*
*
*
*
*
*
*
Flows Into and Out of
Systems
Flow Classification
Examples of flows
Example
Physical Science Concepts
Physics Concepts
Mass = quantit
Aircraft - Wings
Airplane
Critical component in modern transportation.
Helps make global economy possible
Major aspect of national defense
More than 500 million passengers in 2005 (est)
1800s Otto Lillenthal glider experiments
1903 Wright Bros first fligh
*
Introduction to Engineering:
Functions, Components, &
Systems
John Krupczak, Jr.
Hope College
Fall 2010
*
*
*
*
*
*
*
(3) Technical System
Utility Model
Technical System
What is meant by a system
In this case:
System = any human made object
regardless o
*
Introduction to Engineering:
Functions, Components, &
Systems
John Krupczak, Jr.
Hope College
Fall 2010
*
*
*
*
Goal
Develop a perspective or approach to
understanding the wide variety of
technical products developed and used
by people.
Develop knowledg
ENGS 346 Fluid Mechanics
Hope College Department of Engineering
Spring 2014
Time:
Location:
Instructor:
Office:
Office Phone:
E-Mail:
TR 9:30 10:50 a.m.
VanderWerf 104
Dr. Roger L. Veldman
VWF 223H
616-395-7154
Veldman@Hope.edu
Textbook:
Fox and McDonalds
ENGS 346 Fluid Mechanics
Hope College Department of Engineering
Spring 2014
Homework #2
Due Thursday, January 16, 2014
1) Read Chapter 2
2) Problem 2.1 a and b (parts 1-4 only)
3) Problem 2.4
Hint #1: See missing streamline notes" PDF le on Moodle c
1. (20 pts) The temperature in a heated reactor is given by the following expression
135 0.012 t
T 26.5
e
q
where
T = temperature, oC
q = volume flow rate of entering liquid, m3/h
t = time, s
a) What are the units of 26.5, 135, and 0.012? (10 points)
Dim
Quiz #1
1.
Convert 2.55
lbm
kg
to 2
2
ft s
m s
Correct answer: 0.522
2.
lbm
ft 2 s
The equation
t = 16.5 2.25 L-1/2
describes the amount of time it takes for the liquid in a tank to reach a certain level as it is
draining. In the equation, t is the time i
Solution Outline for Problem 7.24
Part (a) the steam is heated at constant pressure from 100oC and 1 atm to 400oC and 1 atm. How
do we know? Satd. steam means at its vapor pressure thus the input steam is at 1 atm (its vapor
pressure at 100oC). Since it i
Quiz #2
1.
The specific gravity of pure nitric acid is 1.495230/4
(a)
Using the specific gravity, determine the density of nitric acid in g/cm3 and in lbm/ft3
1.4952 g/cm3 and 93.3 l lbm/ft3
(b)
At what temperature does your answer to part (a) apply? 30oC
ENGS 355
Structural Analysis
Solutions to Homework 1
F2013
Problem 1 (4 points):
Over the weekend, look at the structures on campus and think about what is supporting these
structures. Take a picture of, or sketch:
three (3) structural elements
three (3)
ENGS 355 Structural Analysis
Fall 2013
Homework #9
Assigned: October 25, 2013
Due: November 1, 2013
Problem 1: Find the vertical displacement at G using the method of virtual work. Assume that
member AH was fabricated 2 inches too long and GC was 1.5 inch
ENGS 355 Structural Analysis
Fall 2013
Homework #1
Assigned: August 30, 2013
Due: September 6, 2013
Problem 1 (Please complete for class on Monday 9/2):
Over the weekend, look at the structures on campus and think about what is supporting these
structures