St. Vincent Advancement Team Design Review April 17, 2012.
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Transcript of St. Vincent Advancement Team Design Review April 17, 2012.
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St. Vincent Advancement TeamDesign ReviewApril 17, 2012
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Overview
•Introductions•Hippotherapy•Fatigue Device•HEC (Hand Eye Coordination)•Ball•Database
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Project Partners
•St. Vincent Hospital
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Hippotherapy
Jacob EissesGeunho Choi Anthony Reyes
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What is Hippotherapy?
•Hippotherapy ▫A physical, occupational, or speech and
language therapy treatment strategy that utilizes equine movement
•Why the Horse?
5http://www.americanhippotherapyassociation.org
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Hippotherapy cont.
The horse provides a dynamic base of support, making it an excellent tool for increasing trunk strength and control, balance, building overall postural strength and endurance, addressing weight bearing, and motor planning.
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Who Can Benefit?
•Attention Deficit Disorder
•Autism •Cerebral Palsy •Closed Head Injury •Developmental Delay •Down Syndrome •Emotional Disorders
• Hearing Impairment• Multiple Sclerosis• Muscular Dystrophy• Paralysis• Scoliosis• Spinal Bifida• Traumatic Brain Injury
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Project Partner Needs
•Hippotherapy…▫ System that simulates horseback riding for
children who have underdeveloped muscle allowing children to gain: Strengthen core muscles Posture Motor function Balance
▫Small children under ten Debilitating illnesses and movement dysfunction Poor posture Limited mobility
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Project Partner Info • Need for Hippotherapy sessions on site• Amazing results but costly-Average Hippotherapy ride cost ≒ $75~150 per session-Normally runs twice a week ≒ $7,200~14,400 per year• Accessibility for urban families-barns are not near by big cities-saving travel distance (=cost)
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Project Specification Overview
•Design Goal▫Develop a working prototype
Start with simple design Modify prototype to fore bar design if necessary
▫Design steering mechanism▫Design roll cage like frame to provide safe seat
belt to prevent from falling off▫Make a handle for therapist to push▫Childproofing
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Two different designs
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• Design #1 uses misshapen wheels• Design #2 uses normal wheels that drive 4-
bar mechanisms to move saddle
The following prototype is build from design #1
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Prototype Specifications • Overall dimensions: width 30” length 57.5”
height 38” • Chassis dimensions: 25” wide, 51” long• Barrel is attached to chassis using 4 11” 2 by
4 legs
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The barrel
•Semi circle ½ inch plywood•Framed with strips of ½”
plywood 2” wide•17” wide, 37” long, 10” tall•4 semi-circle ribs•2 by 4 base
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Platform for wheel testing
Goals• Mimic horse
steps• Test different
wheel designs
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Front Wheel Shape
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• Tested 6 pedal flower and oval
• Flower shape worked better than oval
• Right wheel connected to left to maintain offset
• Each time wheel rolls onto pedal, mimics a step by the horse.
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Rear Wheel
• Oval shape Provides up and down motion
• The change in radius causes change in height
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• Wheels will be made using ¾” plywood• Used Plasti-dip to provide traction• Difference between the radius of the major and minor axis
will determine the change in height• Flower will mimic 6 steps per rotation• Oval wheel will mimic 2 steps per rotation
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Determining wheel shape and size
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4 wheel vs. 3 wheel
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•4 wheels could not keep all wheels in contact•3 wheel design provides good movement and
stability
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Journey of building the ride #1Build design #1 Test full scaleIf necessary, modify the prototype to
utilize four bar mechanism
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Wheel Design•Front
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• Rear
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Determining Front Wheel Shape• Considered 5,6 and 8 pedals.
• More pedals equals easier to rotate
• Used trig and geometry to determine the change in height as a function of edge length.
• For octagon change in height=.1*side length
• For hexagon change in height=.13*side length
• For pentagon change in height=.5*side length
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Determining Back Wheel Shape• Diamond Shape
with rounded edges• Major radius 10”• Minor radius 8”• Change In height
equals 2”
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Fixing Axles on wheels1. Cut out a groove for a pin2. Drill through the axle3. Put a pin through the drilled-hole4. Glue the pin and wheel together
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• Rear wheel slid instead of rotating• Left to right movement broke the top layer of the
plywood wheel allowing free rotation• Movement provided from front wheels provided
positive results
Testing
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Recap and possible failure report
•Plasti-Dip will NOT last long
-failed after 2~3 feet run
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o Failure around the axle due to excessive torque
-19 ft-lb @ stationary-equivalent to pneumatic pulse driver
Recap and possible failure report
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Additions to Prototype
• Add a push bar • Replace plasti-dip with
bicycle inner tube rubber• Replace back wheel with an
oval• Have metal plates welded
onto axels so that wheels can be bolted onto axels
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After completion of Prototype•Aesthetics
▫Cloth/fabric to cover the frame and sharp edges
•Extra Safety▫Childproof edge
guards▫Seat belt for saddle to
secure patients better
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Budget (design #1) Project 2: Hippo Therapy (Non-Mechanical)
Description & Justification
Fall 2011 Actual Expenses
Spring 2012 Predicted Expenses
Spring 2012 Actual Expenses
F11 Actual + S12 Predicted
Total Expenses
Funds from Other Resources
2.14x 8ft 2 by 4s $75.00 $11.88 $7.92
2.22x 4ft by 8ft 3/4in plywood $100.00 $40.52 $40.52
2.32x 1in metal tubing $40.00 $7.99 $7.99
2.44x bearings $30.00 $47.12 $28.00
2.5machining $50.00 $0.00 $0.00
2.6Cloth $20.00 $15.00 $10.00
2.7Plasti-dip $15.00 $6.88 $8.00
2.8Wheels/Parts $50.00 $0.00 $0.00
2.9Aesthetic Materials $40.00 $0.00 $0.00
2.10Epoxy $20.00 $15.67 $0.00
TOTAL $0.00 $440.00 $145.06 $0.00 $102.43 $0.00
Total cost of prototype: $145.06
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Project Timeline Week #
Activity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Semester Project Planning
Project Partner Meeting (if able)
Research: Hippotherapy, Project Partner Needs
Research: Current Design
Sketches
Research: Materials
Purchase Materials
Design Review (all)
Build
Testing/Modifying
Finalize
Design Review/Evaluation(all)
End of Semester Report
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Additional considerations
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•Size▫Able to hold children up
to 5ft tall•Comfortable
▫Thin cushion•Safe
▫No sharp edges▫Less likely for
children to fall
•Saddle▫Enables more muscles
activity•Easy to clean
▫Removable/cleanable saddle blanket
•Strong▫Need to hold 60-100
lbs
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Questions?
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Fatigue Device TeamMatt CarpenterEmily McCuenErica Zanath
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Project Background
▫Project was started in Spring 2010▫Motivated by physical therapists need▫Need a device that can measure fatigue in
arms▫Need to provide therapists with quantitative
assessment▫Will be used with children ages 6-10
Keep children engaged
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Design Requirements
•Therapist Requirements▫Quantitative▫Easy to use▫Engaging▫Adaptable
•Functional Requirements▫Size – Ipod Nano▫Weight – Wrist watch
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Previous Design
•Four games in one box▫Rotating box▫Works different arm muscles
•Problems▫Not adaptable▫Not portable
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Current Design
•Wireless interfacing▫Two accelerometers on wrist▫One accelerometer on elbow
•Utilization of pre-existing games▫Different activities for various age groups/skill
levels▫Different activities for various muscle groups
•MATLAB and Arduino programs created to measure fatigue for each motion used
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Calculating Fatigue
•Use accelerometers to find accelerations▫Use accelerations to calculate forces▫Set fatigue limit at some percent of
maximum force•Plot forces of each hit
▫Stop game after the fatigue limit is passed•Sampling Rate
▫Need to balance accuracy and efficiency
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What is Arduino?
•Open source microcontroller•Very versatile•Wide array of expansions•Extensive community
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Our Current System
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Software
MATLAB-based programming
Serial communication interface
Continuous data streaming
Real-time acceleration plot
User interface Fatigue level tracking
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User interface •Control center for the
therapists•Will allow therapist to:
▫Start and end therapy and recordings.
▫Input patients’ arm weight
▫Input target fatigue level•Can choose motion
types•Display the force graph
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Ideal Output
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Games, Motions, and MusclesDrumming Motion
• Consider the force of the deltoid, pectoral, and bicep muscles
• Games▫ Hungry Hungry Hippos▫ Dribbling a basketball▫ Whack-a-mole▫ Drum set
Punching motion
• Consider the forces of the tricep
• Games▫ Punching Bag
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Device encasing
•Use iPod Nano armband•Allows adjustable fit
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Design Failure Mode and Effects Analysis (DFMEA)•Evaluated possible failures of each
component▫MATLAB Program
Error reading data in▫Interface to Therapists
Therapist entering wrong percentage▫Wristbands with Sensors
Sensor moving around▫Physical Games
Games become worn•Evaluated device as a whole
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Issues to be addressed
•Software▫Communication between Arduino and
MATLAB▫MATLAB Program
LabVIEW or Visual Basic
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Future Goals▫Complete Software Programming for two
motions▫Complete hardware assembly
Including encasing for hardware▫Test and Redesign as needed▫Incorporate other muscle groups▫Add more games, with more complex
motions▫Smaller, condensed version of wrist/elbow
bands
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Future Version
•All components on one custom circuit board▫More robust▫Smaller▫Lighter
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Questions?
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HEC TeamKaustuv Dasgupta Jinyuan Tian
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•St. Vincent Pediatric Rehabilitation Center
•In Indianapolis, Indiana•Working with physical therapists
▫Patients are children ages 3-14 years old struggling with motor and visual skills
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Our Project Partner
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•Develop a method of testing, recording, and quantifying a patient’s hand eye coordination skills
•Quantified data will be used by physical therapists to track patients’ improvement with therapies
•Needs to be completed with young patients in mind
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Project Goal
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•HEC project began in Fall 2010•Games have been developed in past
semesters •The Rockband drum hardware was
selected early on •Fly Swat Game and Reaction have been
completed•Simon Game is under development
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Project History
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Timeline –Spring 2012
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Hardware
New piezoAttached with putty
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•Calculates the average response time for the child.
•Visual-Spatial Relation
Fly Swat Games
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Demo Fly Swat Game
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•Cymbals/No Cymbals▫Spatial recognition
•2-7 Sequences *•Unlimited Runs
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Testing and Scoring
• Score total run percentage• Record response time
*http://www.experiment-resources.com/short-term-memory.htmlhttp://www.corporatecoachgroup.co.uk/blogDetail.asp?blogid=183
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•Visual Recognition
•Measuring Reaction Time
•Visual Discrimination
Reaction Game
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Demo Reaction Game
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•The game is always starting from a pre-defined drum(in this case, red).
•After the game is over, it automatically gets reset to the red drum, for a new run.
•These two modifications address the recommendations.
Issues Addressed for the Reaction Game
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The ability to store and retrieve previously experienced visual
sensations and perceptions when the stimuli that originally evoked them
are no longer present.
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What is Visual Memory?
http://www.achievepublications.com/chpt3.htmlhttp://www.teachingexpertise.com/articles/activities-to-develop-visual-memory-1104
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•Goal: To test child’s visual memory
•Similar to the Fly Swat game, utilizing the same kit and similar background layout .
Simon’s Game
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• There would be four drum sets on the background, and drums will light up colors in a random sequence.
• A “glowy” drum color will show the user which drums to remember.
• User need to hit the drum in the same sequence based on memory.
• Results will turn out in terms of reaction time and hit correction percentage.
• The total number of drums to remember can be decided based on the number of runs selected.
How Simon Game Works?
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Flow Chart of Simon GameInitialize game
Run Random Sequence Function
Run Hitting Register Scoring Function
End
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Background will light up in a sequence
Let me give you a demonstration
The Simon Game
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•The current design of Simon game is not fully functional according to the direct user’s needs. For the future team, they need to develop a new criteria of calculating the percentage of correct hits.
• It is important to consider more about the sequence to be remembered and the number of hits, not just the latter.
Issues
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•The scoring for the Simon’s Game needs to be programmed. For now, we are using the old scoring algorithm from the Reaction Game.
•Figure out a possible way to display the drum sequences at the top of the screen.
Transition
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Questions?
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BALL Team
Katie SandlinJessica PlaceTom Yang
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Project Partner•St. Vincent Pediatric Rehabilitation Center▫Jennifer Suba
Physical Therapist at Carmel Location•Project Consultant
▫Mindy GutweinPhysical Therapist at St. Elizabeth
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Project Identification•Design a ball containing an accelerometer to record force of a patient’s kick.
•Design a database that allows therapist to track sessions of individual patients.
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Operational OverviewSuba places
the ball on the ground
Patient kicks the ball down
the hall
The accelerometer picks up the acceleration
Sends it to wireless
handheld device
Data recorded
Repeat for 5-10
minutes
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Progress of the BALL Team
•Project started in the Fall of 2010▫Research was conducted▫Initial testing
•Spring 2011▫Completing research
•Fall 2011 ▫Finalizing materials▫Prototyping
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Timeline• Week 7
▫Exported existing codes to Arduino board ▫Began final code between Arduino and accelormeter
• Week 8-9▫Have all codes working with the Arduino board ▫Build circuit board
• Week 10-12▫Purchased OtterBox for protective case and began
construction▫ Finished calibrating the accelerometer
• Week 13 -15▫Finish construction of ball▫Begin testing
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Structural Design Concept
• 1: OtterBox• 2: Foam Ball• 3: Foam Layer• 4: Outer Covering
of Soccer Ball
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Current Progress
•Began construction of second prototype
•Finalized codes for hardware
•Purchased power source
•Soldered hardware components
•Finished calibrating accelerometer
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Current Progress
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Current Progress
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Components of Wireless Device
•3-axis analog accelerometer
•Arduino Microcontroller
•X-Bee
▫Wireless Transmitters and receiver
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Working process
Sensing Data
Processing data and sending data
Receiving data and push to user interface
User interface interpret data into force and graph(done
this part)
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Progress Continued
•Circuit soldered
▫Make sure firm connections
▫Basic step for the circuit to physically work correct
▫Had continuously getting garbage read before
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Calibration of Sensor
•Not physically changing the sensor itself
•Relation between sensor outputs and real physical value
•Relation of sensor’s output and gravity acceleration
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Other progress•Xbees configured (pair up two xbees)
•Instructional code updated
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Questions and Suggestions
•Any feedback is greatly appreciated.
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Database
Ben FrauhigerKatie Sandlin
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Purpose
•To construct a database that will fulfill each project partners’ specifications.
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Current Progress
•Local Host▫php and MySQL
•Constructed separate database for each▫HEC▫Ball▫Fatigue
•Backend completed •Frontend in progress
▫Currently working on search ability and storing data
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Specifications
•Patient Database▫Patient ID ▫First and Last Name▫Birth date
•Project Database▫Date of Session▫Patient ID▫Progress and Goals▫Measurables
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BALL Project Database
•Patient ID▫Component that will be searchable
•Measurables▫Force▫Deviation from Midline
•Goals and Improvements•Date of session
▫More recent at beginning
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Current Progress
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Current Progress
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Front End
•Data input▫Local host▫Web browser
•Security▫User ID and Password
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Patient Table
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Database Table
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Issues for Next Semester
•HIPPA Regulations•Security•Aesthetics
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Questions?
Thank you for coming!!
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