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GMN621S - GEOINFORMATION MANAGEMENT - 1ST OPP - JUNE 2022 |
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n Am I BI A u n IVE Rs ITY
OF SCIEnCE Ano TECHno LOGY
FACULTYOF ENGINEERINGAND SPATIALSCIENCES
DEPARTMENT OF ARCHITECTURE AND SPATIAL PLANNING
QUALIFICATION: BACHELOR OF GEOINFORMATION TECHNOLOGY
QUALIFICATION CODE: 07BGEI
COURSE CODE: GMN621S
LEVEL: 7
COURSE NAME: GEOINFORMATION MANAGEMENT
DATE: JUNE 2022
PAPER: THEORY
DURATION: 3 Hours
MARKS: 100
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
EXAMINER:
MRS ROXANNE MURANGI
MODERATOR: MR MIGUEL VALLEJO
INSTRUCTIONS
1. Write your student number on each answer sheet used.
2. Answer ALL the questions.
3. Read each question carefully before attempting to answer.
4. Write clearly and neatly.
5. Materials allowed: non-programmable calculator, Ruler, Pen, Pencil, Eraser (rubber),
Standard Normal Distribution Tables
THIS PAPERCONSISTSOF FOUR (5) PAGES(EXCLUDINGTHIS COVERPAGE)
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Geoinformation Management
GMN621S
Question 1
Namibia has been experiencing rapid growth of informal settlements in urban areas. The causes of
this problem have been researched and debated for a long time. You are part of the team that is
conducting a desktop analysis to determine the causes of this problem. Answer the questions
below.
1.1. Identify four main reasons/causes of informal settlement growth (i.e., 1st level).
(4)
1.2. For each of the main reasons/causes identify two sub causes (2nd level).
(8)
1.3. Develop a problem tree depicting the main problem, causes and effects of informal
(13)
settlements in an urban area.
[25]
Question 2
List four main types of GIS implementation levels in an organisation. For each, explain
what reasons could trigger the "Thinking about Implementing a GIS" at that level.
(8)
[8]
Question 3
Describe briefly what a "Needs Assessment "is and why it is done (max. four points for the
general explanation and max. six points for the description of its components).
(10)
[10]
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Geoinformation Management
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Question 4
During the needs assessment, a GIS planner would conduct a technology seminar. Information
Product Description (IPDs) is one of the main outputs of such a seminar.
4.1 What is the critical function of the IPDsin a GISplanning process?
(3)
4.2 What is the relation between IPD and MIDL?
(2)
4.3 List only six of the components of an IPD.
(3)
[8]
Question 5
The quality of a GIS analysis depends on the quality of data and the skills of the person doing the
analysis.
5.1 Briefly explain the four main types of spatial errors that are possible in GIS.
(4)
5.2 For each error type, name one way how to minimize the error in a GISdatabase.
(4)
5.3 What is the difference between the accuracy and precision of spatial data?
(2)
(10]
Question 6
6.1 Briefly explain the four characteristics that influence data sources and design.
(4)
6.2 Explain the three common logical models for GISDatabase designs.
(6)
(10]
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Question 7
Namibia is busy implementing a National Spatial Data Infrastructure (NSDI) Policy and the Namibia
Statistics Agency (NSA) is mandated by the Statistics Act, No. 9 of 2011 to implement this.
7.1 State and describe briefly the two categories of spatial data that one finds in the National (2)
Spatial Data Infrastructure in Namibia. Give one example of each type.
7.2 Define what you understand by spatial data infrastructure (SDI)and name two types. (2)
[4]
Question 8
You are a consultant hired to collect data for a GISfor urban development monitoring. As part of
your task, you are required to determine the appropriate scale and corresponding primary data
sources.
8.1 Assuming you have to produce a map for a town planning firm. What would be the scale
of the map if a 20m x 40 m erf is 10mm x 20mm on the map?
(2)
8.2 Now that you have determined the scale of your map, what would be the perimeter in
cm of a school sports field area on the map if the perimeter on the ground is 400m?
(2)
8.3 Assume a person offers you a 3.6 Ha plot to buy and then shows you the location of the
plot on a map with the same scale as in (7.3). The plot which he shows you is a
rectangular polygon and measures 8 cm x 10 cm on the map. By how much bigger or
smaller (in ha) is this plot on the ground?
(3)
8.4 The maximum West-East extension of the NUSTpremises (including the Main Campus,
the Sub-Campus, and the Hotel School) is about 900 m, The maximum north-south
extension is about 400 m. Can you print the entire NUSTCampus premises on a single
DIN A 4 page at a scale of 1: 2,500?
(Note: A DIN A 4-page measures 29.7 x 21 cm) Assume that 1 cm along all four edges
cannot be printed!) Please motivate your answer with a comprehensible calculation!
(4)
[11]
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Geoinformation Management
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Question 9
After conducting a needs assessment and a technology development seminar for GISfor solid waste
mapping and monitoring, you came up with six activities with their duration (in days) as shown in
the table below. Round off to two decimal places.
Task Predecessor Optimistic
Time, OT
A
3
B
A
5
C
B
8
D
C
5
E
C
2
F
D, E
14
Most
likely
Time, MT
6
11
15
14
19
15
Pessimistic
Expected
2
G°Path
Time, PT Time, ET
12
7
20
18
13
22
9.1 Calculate the expected time for each activity.
(2)
9.2 Calculate the variance of the paths.
9.3 Construct the PERTdiagram.
(2)
9.4 Identify and determine the duration of the critical path.
(2)
9.5 Calculate the specified time if the probability of completing the project is 92%.
(3)
9.6 Calculate the probability of completing the project in 89 Days.
(3)
[14]
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Below are the given formulae to help you answer Question 9.
z = specified time - critical path expected time = ( DT - Er )
path standard time
.JapathZ
Where DT= the specified time
Er Path= the expected completion time of the critical path
2
CTPath
= variance
of
path
2
Variance of each task, Var2 = a 2 = ( P ; 0 )
z
'
.00
.01
.. a e ·a ues epresent. ARE.:\\ tot I1eLEFT of tI1eZ score.
.02
. 03
.04
.05
.06
.Oi
.OS
.09
0.0 .50000 .50399 .50798 .51197 .51595 .51994 .52392 .52790 .5318S .53586
0.1 .539S3 .5-B80 .54776 .55172 .55567 .55962 .56356 .567-19 .57142 .57535
0.2 .57926 .5S317 .5S706 .59095 .594S3 .59S71 .60257 .60642 .61026 .61409
0.3 .61791 .62172 .62552 .62930 .63307 .636S3 .6405S .6-1431 .64S03 .65173
0.4 .65542 .65910 .66276 .66640 .67003 .67364 .67724 .6S0S2 .6S439 .6S793
0.5 .69146 .69497 .69847 .70194 .70540 .708S-I .71226 .71566 .71904 .722-10
0.6 .72575 .72907 .73237 .73565 .73S91 .74215 .74537 .74S57 .75175 .75490
O.i .75S04 .76115 .76424 .76730 .77035 .77337 .77637 .77935 .7S230 .7S524
0.8 .78S14 .79103 .793S9 .79673 .79955 .80234 .S0511 .S0785 .S1057 .81327
0.9 .81594 .81S59 .S2121 .S23S1 .32639 .82894 .83147 .8339S .S3646 .83S91
1.0 .84134 .84375 .S-161-1 .84849 .S50S3 .85314 .85543 .85769 .85993 .S6214
1.1 .86433 .86650 .86864 .87076 .87286 .87-193 .8769S .S7900 .S8100 .8829S
1.2 .8S493 .SS6S6 .8S877 .89065 .89251 .S9-B5 .S9617 .89796 .S9973 .90147
1.3 .90320 .90490 .90658 .90824 .90988 .91149 .91309 .91466 .91621 .91774
1.4 .91924 .92073 .92220 .92364 .92507 .92647 .927S5 .92922 .93056 .931S9
1.5 .93319 .93448 .93574 .93699 .93822 .93943 .94062 .94179 .94295 .9440S
1.6 .9-1520 .9-1630 .94738 .94845 .94950 .95053 .9515-1 .95254 .95352 .95449
l.i .95543 .95637 .95728 .95818 .95907 .95994 .96080 .96164 .96246 .96327
1.8 .96407 .96485 .96562 .9663S .96712 .96784 .96S56 .96926 .96995 .97062
1.9 .9712S .97193 .97257 .97320 .973S1 .97441 .97500 .9755S .97615 .97670
2.0 .97725 .9777S .97831 .97882 .97932 .97982 .98030 .9S077 .9S124 .98169
2.1 .9S214 .98257 .98300 .98341 .9S382 .9S422 .9S-161 .9S500 .98537 .9S574
2.2 .98610
2.3 .9892S
.98645
.98956
.98679
.9S983
.98713
.99010
.98745
.99036
.98778 .9S809
.99061 .99086
.98S40
.99111
.9S870
.99134
.98S99
.9915S
2.4 .99180 .99202 .99224 .99245 .99266 .992S6 .99305 .99324 .993-13 .99361
1.5 .99379 .99396 .99413 .99-130 .99-146 .99461 .99477 .99492 .99506 .99520
2.6 .99534
--• I .99653
2.8 .99744
.99547
.99664
.99752
.99560
.9967-1
.99760
.99573
.99683
.99767
.99585
.99693
.99774
.99598
.99702
.99781
.99609
.99711
.9978S
.99621
.99720
.99795
.99632
.99728
.99801
.99643
.99736
.99807
2.9 .99813 .99S19 .99S25 .99S31 .99836 .99841 .99846 .99851 .99856 .99861
3.0 .99865 .99869 .99S74 .99878 .99882 .99886 .99889 .99893 .99S96 .99900
3.1 .99903 .99906 .99910 .99913 .99916 .9991S .99921 .9992-1 .99926 .99929
3.2 .99931 .99934 .99936 .99938 .99940 .999-12 .99944 .999-16 .999-18 .99950
3.3 .99952 .99953 .99955 .99957 .99958 .99960 .99961 .99962 .99964 .99965
3.4 .99966 .99968 .99969 .99970 .99971 .99972 .99973 .9997-t .99975 .99976
3.5 .99977 .99978 .9997S .99979 .99980 .99981 .99981 .99982 .99983 .99983
3.6 .99984 .99985 .99985 .999S6 .99986 .99987 .999S7 .99988 .99988 .99989
3.i .999S9 .99990 .99990 .99990 .99991 .99991 .99992 .99992 .99992 .99992
3.S .99993 .99993 .99993 .99994 .9999-1 .99994 .99994 .99995 .99995 .99995
3.9 .99995 .99995 .99996 .99996 .99996 .99996 .99996 .99996 .99997 .99997
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