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Amy's Updates

Blueprints: Solo Project

posted Dec 14, 2009, 6:21 AM by Unknown user   [ updated Dec 14, 2009, 6:22 AM by Eddie Woo ]

Starbucks (1)

posted Sep 25, 2009, 5:33 AM by Unknown user   [ updated Sep 25, 2009, 6:14 AM by Eddie Woo ]

Intellectual Property

posted Sep 23, 2009, 3:16 PM by Unknown user   [ updated Sep 25, 2009, 5:25 AM by Eddie Woo ]

Mint.com Case Study

posted Sep 22, 2009, 5:16 AM by Unknown user   [ updated Sep 22, 2009, 5:17 AM by Eddie Woo ]

Live Traffic Data

posted Sep 22, 2009, 5:13 AM by Unknown user   [ updated Sep 22, 2009, 5:18 AM by Eddie Woo ]

For Sep 15
 
 
  1. Describe the process of 'crowdsourcing'.
  2. Identify the information technology (hardware) that is part of this information system.
  3. Identify people in the environment, end users and participants within the system.
  4. Using Word and Paint, create a data flow diagram that comprehensively represents the information processes taking place as a result of this new Google Maps feature.
  5. Identify ways in which the resulting data could be biased or inaccurate.
  6. Discuss the social and ethical issues raised by the widespread use of this technology.
 
 
 

School League Tables

posted Sep 14, 2009, 3:29 PM by Unknown user   [ updated Sep 14, 2009, 3:49 PM by Eddie Woo ]

1. By carrying out research, briefly describe what a school league table is.
Federal and state governments want to collect all school's results in national tests on literacy and numeracy and provide this information to the media for the publication of league tables that rank schools on these results.

2. Outline the key arguments for and against school league tables.
Against:
  • League table rank schools on narrow literacy and numeracy tests whidch to not assess the full range of skills.
  • Not accurate in that they only simply confirm that schools with more students from disadvantaged countries are more lkely to be labelled as 'failing' schools.
  • Government and education departments already have enough information. Lower performing schools need extra funding and support rather than public criticism.
  • Studnets in 'failing' schools demorilised and job prospects damaged.
  • Presure teachers to narrow the range of skills tested rather than teaching a diverse curriculum for individual student neesd, abilities, skills and aspirations.
For:
  • Can provide feedback about how school is learning.
  • Help spot schools that are well resourced and not well resourced.
  • Parents can also use this to monitor their child's performance.
  • Pushes students and schools to achieve more.
3. Describe the relationship between emerging trends in information technology and the debate that has arisen over league tables.
 
 
4. Propose an argument for or against the publishing of league tables, with close reference to related social and ethical issues.

 
 
 
 
 
 
 
 
 

Trial Assessment Review

posted Aug 30, 2009, 4:23 AM by Unknown user   [ updated Sep 14, 2009, 5:34 AM by Eddie Woo ]

Question 21

a) An ethical issue would be the integrity of the data in that there should be no cheating or altering of times although upon entering the school, students were to specify whether they give permission to the school to use their photos, they still might not want their photos and videos to be seen by other people. A social issue is that staff need to be trained how to use the technology. This includes the functioning of the hardware (timing mats and devices) and software (the intranet, databases to arrange results).
 

Mark: 2/3

Initial response not directly related to the system.

 
b)
 
Purpose - To use information technology to occuractely calculate finishing times for all track events.
Participants - The people who collect and maintain the system will mmostly consist of teachers, especially the PE faculty was well as any student helpers.
Data/information - Mainly includes times, events, names and age for resultts and photos and videos of students.
Information technology - Includes timing devices attached to shoes, timing mats, laptops, computers as well as programs to  edit footage, photos and a database to collect and arrange times.
 
Mark: 3/4
 
d) Collecting - Times need to be collected, as this is the main feature of the technology, so that they can be analysed.
Analysing - Data needs to be sorted to see patterns and trends as well as creating graphs to see ongoing progress of studnets, important for training.
Storing and retrieving - Data is initially stored in the laptops linked to training devices. This data may then be retrieved by the software when it needs to be viewed, which is important if students and teachers want to view their information at another time.
Displaying - Evidently, this is needed for students and teachers to octually look at the progress and results of students. This most likely occurs on the monitors of computers or printed out on paper.
 
 Mark: 3/4
 
 

Question 22

 
a) (i)
 
 
 
 Mark: 1/3
 
 
 
 
    (ii) GIF compressionreduces the bit depth of the image, this would compromise the quality significantly. This image is also a 'main' image and big enough in size for FIG compression to be noticeable. The fact that it is a main image would mean quality should not be compromised for aesthetic purposes, especially since this is a professional website.
 
 
 Mark: 1/2
 
 
 

Question 23

a) Changing nature of work
The iPhone has increased access to internet-based services. Those employed in those industries such as banking and retail may lose jobs if they are in the traditional sector as more concentration is placed on the internet.
 
Interpersonal and social relationships
Without meeting people physically, we might not be able to know what they are thinking or feeling. Even through video, the person is not physically there are we may start to lose some social skills due to this.
 
Ownership of data
Those who own the data determine who ahs access and how muh they pay. If large organisations start to dominate the industry, users will suffer the effects.
 
Equity of access
Not everyone will be able to afford the technology and this may result in them falling behind as the world advaces. The success of e.g. the internet has bee ndue to the accesibiliy by so many people, so if access is nott equal, then there will be adverse results.
 
 Mark: 5/6
 
 
b) (ii) Emerging trends
A disadvantage of twitter would be that relationships may become less and less personal from heavy usage of Twitter and less face-to-face contact. However, itallows friends to conveniently update each other and the posts can be read at anytime rather than phone or meeting in real life.
 
Privacy
WIth so much personal information on a Twitter account, shadier personalities on the internet can use this to their advantage to harm others. However, Twitter has allowed celebrities to use this to their advantage and update fans about their day rather thanthrough magazines that may twist the truth.
 
Globalisation
Twitter allows people all around the owrld to communicate with each other and see what life is like for others all across the world. We can now make friends with toehr people we could not possibly meet though it could impact on our social skills.
 
 
 Mark: 4/6
 
 
 
c) Economic issues
The government needs funding for the initial implementation ofthe technology. thiscould either affect other sectors such as health if funding is compromised. They will also need to fund for maintenance of the system such as software updrades and ongoing internet usage.
 
Staff expertise
Teachers will also need to know how to use the programs, if they are to use them to teach students how to use them as well.
 
Schedule issues
Implementation needs to occur in a specific amount of time. If not, this could cost the project more money to run and complicationswill arise wit hthegovernment about their promises.
 
Technical issues
The right software and hardware is needed for this initiative to succeed and treahcers and students needto be trained. Security measures to monitor correct usage of the laptops should be determined for effective use.
 
 
 
 Mark: 2/5
 
 

Question 24

a) (i)
 
 
 Mark: 1/2
 
    (ii) The situation is semi-structured because although some rules can be programmed and to some extent, the inputs are in detail, there are some aspects that are still unstructured because even if a driver's head is crooked, it might be an accidentor if they are blinking a lot suddenly, then they might havesomething in their eyes. This type f data cannot be scaled in roder of which feature is more important, and cannot be programmed.
 
 
 Mark: 2/3
 
 
    (iii) An artificial neural network (ANN) is suitable. To analuse the data, the ANN first needs to recognise the patterns and learn about thee driver's habits. THe sustem could use charts to represent the trends of the driver's behaviour. The ANN could also connect related data that would see at first to be unrelated.
 
 
 Mark: 2/5
 
 
 
b) Potential misuses
The actual company may use the SleepCam as an excuse to fire employees if they 'appear' to be an inadequate driver becayse they cannot keep awake for long enough, even if the technology is mistaken.
 
Responsibility for devision making
Truck drivers must have some degree of trust in the system. However, those who test the system need to stillmake sure they have put in every effort to ensure nothing  wrong occurs. Otherwise, should the SleepCam e faulty, there will be loss of lives and disaster.
 
Training
The company adn truck drivers need to understand how the technology functions and be able to use it. Money will have to be put into education about the SleepCam.
 
 
 Mark: 3/6
 
 

Question 25 

a) (i)Previous experience
When users input similar facts to a previous situation wher the nueral network was corect, the neural network can look back and use the result from that time to help them work out the answer to the current game.
 
Learn
Everytime an answer is wrong or right, they will be able to learn from it and see the pattern to determinewhy they are wrong or right. New facts can be learnt and more specific questions can be asked.
 
 
 Mark: 2/4
 
 
 
    (ii) 20Q can acquirenew facts through learning the features of objects based on whwtthey got wrong or right. The answers to the questions aksed aboutthe object determines the description for the neural network to remember. People could also program additional knowledge and rules for 20Q about an eff so that better questions can be asked and a conclusion might be more accurate.
 
 Mark: 1/4
 

Question 26

a)
Communications tehcnology e.g. phone
Internet
Social networking sites
 
 Mark: 2/3
 
b) Communications sytems are related to the riots because it would have aided in the spread of the riot if more people are notified about it. This could occur via the internet byt Titter or by videos of the riot on YoutTube. Mobile phones can be used to send videos, images or to take talk and alert others quickly in the rest of the world.
 
 Mark: 2/3
 
 
c) The amount of violence occurring would be one reason why the government responded in such a way to restrict thespread of the riot, since many improvised weapons were used and many were killed. If it spread, then more of this would occur. Cutting of telecommunications is also faster than having soldiers and police to control the riot because of the backbone and this can act as an added measure so that soldier and police can control the situation.
 
 Mark: 3/4
 
d) The deactivation of Urumqi's telecommunication is the right choice because otherwise flase, biased information would leak out to condemn wither the governemnt or the citizens. More unrest will result from these opposing views in al partso f the world. Too much data will also occur and it will become confising for users to get through so much conflicting information. Censorship of the internet should also occur becasue of the nature of this riot and to save lives. Thegovernemtn wouldnot want bad publicity either which owuld affect its trade and economy in the future.
 
 Mark: 3/5
 
e)Quality of information
Through monile phones and internet, users can receive lots more data and more readily, however, anyone is able to submit such information and the user needs to identify whwt is true and what isn't. With non-computer-based systems, such as the newspaper, the information provided is more prefessional. However, in some cases, can also be biased.
 
Technologies
Computer-based systems are systems require power to function, while non-computer-bbsed systems do not and therefore are fairly portable. However, because ofthe nautre of computer-based systems, data is also easily shared.
 
Impacts on users
In terms of ergonomics, the long term effects of computers on health are detrimental, especially to eyes and posture. How non-computer-based systems are used are more flexible, though may still have similar effects.
 
 Mark: 4/6
 

Chapter 5 Mastery Test

posted Aug 10, 2009, 3:36 PM by Unknown user   [ updated Aug 10, 2009, 3:46 PM by Eddie Woo ]

Knowledge Engineering

posted Aug 3, 2009, 3:02 PM by Unknown user   [ updated Aug 3, 2009, 3:48 PM by Eddie Woo ]

1. Identify some of the factors that make knowledge acquisition complicated.
  • Expressing the knowledge.
  • How to represent the data.
  • Number of participants - more is more difficult.
  • Structuring the knowledge - will determine how it is used.
  • Lack of willingless or time of partcipants.
  • Too much or too little data.
2. Evaluate the importance of knowledge validation in a decision support system's knowledge base.
If the knowledge wasn't true, the decisions wouldn't be reliable, which would defeat the purpose of having the DSS because it's wrong.
 
3. Describe a situation in which a decision support system (a) requires and (b) does not require the ability to provide sophisticated explanation and justification for its advice.
A DSS requires the ability to provide sophisticated explanation and justification for its advice 
 
4.Read the infobox on pages 216-217 and answer the question at the end.
 

Analysing

posted Jul 30, 2009, 5:59 PM by Unknown user   [ updated Aug 3, 2009, 3:50 PM by Eddie Woo ]

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