Online Scoring System
& Reference Table Updating
System for PE of NCU
Presented by Chung-lien Tseng
Date: 10/28, 2004
Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

Online Scoring System
2
Introduction
It was a one-year project for MIS students of NCU
 Objectives

 Provide an online system (for equipment & place
management) for PE office
 Facilitate the process of scoring

Target users
 Teachers of PE
 Students
 Administer of the system

My job-Online Scoring System
Online Scoring System
3
Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

Online Scoring System
4
Requirement Discovery
 Teachers
have to calculate the average
score and then fill in the official form
 Past grades can’t be saved and checked
 Some test items of PE don’t have real
scores, such as triple jump, running
 The reference table of converting test
grades into scores of percentage is
difficult to be updated, and the data is old
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Requirement Analysis
 To
maintain the reference table and take the
ability of current students into account
Reference Table Updating System
 To
facilitate the process of scoring and keep
the past student grades on file
Online Scoring System
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

Online Scoring System
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Evaluation of Alternatives
Use Internet Programming Language
 For Reference Updating System

 Internet Programming Language
 ASP
 ASP.NET

For Online Scoring System
 Excel with VBA
 Internet Programming Language (ex: ASP, ASP.NET,
script languages)
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Why Did I Choose Excel
 Most
of PE teachers are normal users, so
the system must be easy to use
 The scoring system needs lots of fields to be
filled in grades, and some fields need to be
frozen
 The scoring system needs a mechanism to
transform grades of test into percentage
scores automatically
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Why Did I Choose Excel (Cont’d))
Easy to learn
and use
Excel with VBA
ASP, Script
languages…
Almost all PE
teachers can
use Excel
With good
interface, it’ll be
easy to use
Need many
writable fields
Excel interface
is composed of
table
Need to
Can use Excel’s
transform score formula function
automatically
to achieve
Online Scoring System
Insufficient
knowledge to
do that
Large volume intime
transformation
takes lots of
system resource
10
Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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VBA Introduction
 VBA stands
for Visual Basic Application
Similar to VB
Built in every AP of Microsoft Office (Word,
Excel…)
 What’s
different with macro?
A VBA project may contains several macros
Macro: a public sub-process with no parameter
Macro can be created by either “macro recorder”
or “Visual Basic Editor”
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Pros and Cons of VBA
 Pros
Facilitate the use of Microsoft Office
Record (compile) a repetitive job as macro, so that
we only have to load the macro every time we need
to do that job
 Cons
Macro may be a malicious program
To avoid being attacked, we can set the security level
to “High” or “Medium”
Digital Signature
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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ER Model
teacher
(account)
teachclass
teach
course
include
score
enroll
reftable
testitem
link
student
generate
contain
take
test
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refmeta
15
Database Design

Online Score System
 account
 teacherName, id, password
 teachclass
 teacherName, courseName
 course
 courseName, courseId, class
 student
 studentNo, studentName, studentGender, studentDept, studentGrade
 score
 studentNo, courseName, score
 testitem
 courseName, itemNo, item, itemPercent
 test
 courseName, studentNo, itemNo, testScore
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Database Design (Cont’d)
 Reference
Table Updating System
testitem
courseName, itemNo, item, itemPercent
reftable
item, result, gender, refScore
refmeta
item, gender, measure, refSize, refMean, refStd,
refSizeStd2, refSizeMean2, refSizeMean
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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Reference Table Algorithm
 Based
on past data
 Average grades of current student have
most of percentage of new reference table
 Use the original algorithm of old system to
generate new reference table
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Reference Table Algorithm (Cont’d)

Algorithm
 Input of algorithm: mean( X ), std (S) of all grades
 To calculate joint
new data, we
X and S of old and
2
need  ni ,  ni X i , n X
i
and  ni S i for
2
i
newX   ni X i
n
i
n X  n S
2
newS 
i
i
i
2
i
n
i
 new X
2
 i=I means the old reference table data
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Reference Table Algorithm (Cont’d)
 Range of real score: 40~100 (40 is the lowest score of
PE in NCU)
 Slope: relation between test grades and scores
 >0triple jump; <0running
 Set Upper Bound (UB): a range be deducting later
UB= 4* S (UB= X if UB> X )
 st is a decided parameter for every score range
 If the slope>0 between test grades and scores, i.e. direction
ratio, st decreases when score increases; otherwise, st
increases when score increases
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Reference Table Algorithm (Cont’d)

elseif i>85 and i<89 then
st=0.1 * std
elseif i>88 and i<92 then
st=0.095 * std
lseif i>91 and i<95 then
st=0.09 * std
elseif i>94 and i<98 then
st=0.085 * std
elseif i>97 and i<101 then
st=0.08 * std
end if
Example
 slope>0, i=score
for i=41 to 100
if i>40 and i<51 then
st=0.135 * std
elseif i>50 and i<61 then
st=0.13 * std
elseif i>60 and i<66 then
st=0.125 * std
elseif i>65 and i<71 then
st=0.12 * std
elseif i>70 and i<76 then
st=0.115 * std
elseif i>75 and i<81then
st=0.11 * std
elseif i>80 and i<86then
st=0.105 * std
ub=ub-st
score(i)=mean-ub
next
test
grade
Triple
jump
4.6m
0
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score(i) curve
mean
grade
score
ub curve
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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System Flowchart
 Online
Log in
Scoring System
Choose course &
Scoring mode
Add or delete items
Save
modify
reset
Print
Enter Excel &
start scoring
Leave
Set test items
and %
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Leave & scoring
another course
(re-log in)
24
Problems
1.
2.
3.
4.
5.
6.
How to transform test grade into score immediately?
How to tell whether a test item needs the reference table?
How to renew the scores if relative reference table has
been updates?
How to control or jump to a given field of column?
How to transmit data (ex: teacher’s name, course name,
etc.) from webpage to Excel?
Where to put the Excel program (at server or client)?
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Solution 1

1.
2.
3.
How to transform test grade into score
immediately?
Save reference tables in database
Load required reference tables at the
beginning and when needed
Use Excel’s built-in “VLOOKUP()” formula
to convert test grade into score
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Solution 2

1.
2.
3.
How to tell whether a test item needs
the reference table?
Use Combo Box to list all referenced test
items when choosing test items
If the listed item is selected
link to relative reference table
If the teacher types test item himself
 a normal test item
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Solution 3

1.
2.
3.
How to renew the scores if relative reference
table has been updates?
Only record the original test grades when saving
file
Auto-transform into percentage scores on
scoring (i.e. open Excel)
Scores can’t be renew immediately if administer
updates the reference while someone is scoring
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Solution 4

1.
2.
3.
How to control or jump to a given field
of column?
Naming some special fields and every
column
A column is named after item number or
data type (stdno, gender…) it is filled
Use Excel’s ‘Range(“name”)’ function to
control whole column
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Solution 5
How to transmit data (ex: teacher’s name,
course name, etc.) from webpage to Excel?
Record information needed into database while
interface is changing from webpage to Excel

1.
•
2.
3.
Add a new table “scoreLog” with fields “ipAddress”,
“teacherName”, “courseName”, “status”…
After opening Excel, running “ipconfig” command
by Excel function to get IP address
According the IP of the teacher, retrieve required
information from database
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Solution 6

1.
Where to put the Excel program (at server or
client)?
The Excel program is saved at server
1.
2.
3.
2.
Easy to maintain
Prevent Excel program from being destroyed
More mobility
Side effect
“Read only” dialog shows when 2 teachers score at
the same time
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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Reference Table Updating System
Choose update
mode (add item
or update)
Log in
add new
item
Set new item
information (ex: name,
measure unit, slope)
Note:
Choose items to be
updated
just
update
Preview updated
reference table
Update
reference table
This system is available only with 2 weeks after school opens.
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Reference Table Updating System
(Cont’d)
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Reference Table Updating System
(Cont’d)
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Reference Table Updating System
(Cont’d)
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Online Scoring System
Log in
Choose course &
Scoring mode
Add or delete items
Save
modify
reset
Print
Enter Excel &
start scoring
Leave
Set test items
and %
Leave & scoring
another course
(re-log in)
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Online Scoring System (Cont’d)
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Online Scoring System (Cont’d)
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Online Scoring System (Cont’d)
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Online Scoring System (Cont’d)
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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Limitation and Constraints

System
 Online Scoring System can only be run in Excel 2002
and above
 Insufficient security for student data and scores
 The VBA won’t work if user doesn’t agree it to run—
need trusted digital signature
 The transfer process between webpage and Excel is
rough
 Data of reference table are not abundant enough
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Limitation and Constraints
(Cont’d)
 External
Environment
Can’t integrate with system of Office of
Academic Affairs
Communication with end user is not enough
Immature programming technique
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Outline
Introduction
 Requirement Analysis
 Evaluation of Alternatives
 VBA Introduction
 Database Design
 Algorithm of Reference Table
 Problems and Solutions
 System Structure and System Display
 Limitations and Constraints
 Conclusion

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Conclusion
 It
an unfinished project
 In the future
Move all scoring system on the Internet
Emphasize on the security of system and
database
Enhance system performance
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Wait a minute
… it’s present time!!