Sunday, February 21, 2010

Survey on the Awareness of Boats and Hydroelectricity

To all group members and readers, please take some time in doing this survey. Thank You


Week 6 Reflection- Isaac Phua

This week our group created a survey to find out what the public thinks about hydroelectricity and boats
What i know about the surveys:
I know that surveys are made to find out views from the public, what they know and think about a certain subject. Surveys are used to make improvements after looking at what the public thinks about a certain subject.
What i think about the surveys:
I think that surveys are a useful way of collecting information from the public and to find out what the public thinks about a topic
What i found out in the survey:
We have not published the survey so we have not gather any information yet.
What i can do after the survey:
After doing the survey we can use the information gathered and put it into a graph or chart to compare the information

Week 6 reflection- Jun Rong

This week, my group created a survey to find out the view of the public about hydro electric boats.

What I know about surveys:

I know that surveys are used to collect information about the subject it is surveying about. It is used to find out the view of the audience/public for either suggestions or improvements. It may also ask about the opinion of the audience/public about the subject. Surveys are flexible in the sense that a wide range of information can be collected.

What I think about surveys:

I think that surveys are extremely useful in terms of getting and collating information as it is very easy to administrate and collate the data. I feel that surveys that just involve "yes and no" questions may be less effective in collecting these data.

What I found out in the survey:

Because our group has not completed publishing the survey, we do not have much information. But, we now know about what we need to find out from the public.

What I can do after the survey:

Even though we have not created the survey, we expect to collate the data and present it in a form of a pie chart for questions that asks about the audience's opinion. Also, with the data, we will have a better understanding about what we would have to do and would be able to proceed with creating our product.

week 6 reflection--yonghwa

This week, my group created a survey to find out the view of the public about hydro electric boats.

What I know about surveys:

I know that surveys are used to collect information about the subject it is surveying about. It is used to find out the view of the audience/public for either suggestions or improvements. It may also ask about the opinion of the audience/public about the subject. Surveys are flexible in the sense that a wide range of information can be collected.

What I think about surveys:

I think that surveys are extremely useful in terms of getting and collating information as it is very easy to administrate and collate the data. I feel that surveys that just involve "yes and no" questions may be less effective in collecting these data.

What I found out in the survey:

Because our group has not completed publishing the survey, we do not have much information. But, we now know about what we need to find out from the public.

What I can do after the survey:

Even though we have not created the survey, we expect to collate the data and present it in a form of a pie chart for questions that asks about the audience's opinion. Also, with the data, we will have a better understanding about what we would have to do and would be able to proceed with creating our product.

Worksheet 6

Week 6 Reflection--Jun Jie

In this week, we were to create a survey to find out the public's view about hydroelectricity and the application of boats.

What I know about surveys:

I know that surveys are used to collect information about the subject it is surveying about. It is used to find out the view of the audience/public for either suggestions or improvements. It may also ask about the opinion of the audience/public about the subject. Surveys are flexible in the sense that a wide range of information can be collected.

What I think about surveys:

I think that surveys are extremely useful in terms of getting and collating information as it is very easy to administrate and collate the data. I feel that surveys that just involve "yes and no" questions may be less effective in collecting these data.

What I found out in the survey:

Because our group has not completed publishing the survey, we do not have much information. But, we now know about what we need to find out from the public.

What I can do after the survey:

Even though we have not created the survey, we expect to collate the data and present it in a form of a pie chart for questions that asks about the audience's opinion. Also, with the data, we will have a better understanding about what we would have to do and would be able to proceed with creating our product.

Friday, February 19, 2010

Week 5 Reflection-Isaac

During this week, we planned on what each of us are going to do for the next few weeks.We also assigned research topics for each one of us to research on.The topic I was suppose to research on is: the turbines to be used in the boat and its materials

Thursday, February 18, 2010

Week 5 reflection-- Jun Rong

During this week, we planned on what we were going to do for the following weeks to come, planning the schedule of our project. We were assigned to do different researched question on the hydro-electric boat, my topic is : amoount of force needed to generate the hydro-electrical boat.

Wednesday, February 17, 2010

Sunday, February 14, 2010

week 5 reflection-- yonghwa

This week, we planned on what we were going to do the following weeks to come, planning on schedule of our project. We were assigned research topics for each one of us to research on. My topic: Element that allows ship to stay afloat.

Week 5 Reflection--Jun Jie

During this week, we planned on what we were going to do for the following weeks to come, planning the schedule of our project. We also assigned research topics for each one of us to research on.
The topic I was suppose to research on is: The Concept of Hydroelectricity



Due to the Chinese New Year, our group reflections may be posted later than before.

Sunday, February 7, 2010

Week 4 Reflection-Isaac

This week due to sec 2 camp we were unable attend our IPW period but we managed to meet up and discuss on the 4 main points of guiding questions. They are as follow:
(1) What are the materials needed to built the boat?
(2) How do we prevent the boat from sinking?
(3) What is the maximum pressure on the ship before it feels
strained?
(4) The amount of force/electricity needed to be generated.
The areas our group will be researching are:
(1) Types of turbines and the material used
(2) Concept of Hydroelectricity
(3) Concept of Kinetic Energy
(4) Structure and material of the boat
We have split the research questions among the four of us and we will be posting our findings on the blog. When this is accomplished, all four of us will study the research findings.
The product that we are thinking of creating is as follows:
A hydro electrical powerboat.

week 4 reflection-- Jun Rong

This week our class was away for sec2 camp thus we did not have any IPW lessons.
We managed to meet up at yong hwa house to carry out this week assignment.

Worksheet 4

(1) What are the materials needed to built the boat?

(2) How do we prevent the boat from sinking?

(3) What is the maximum pressure on the ship before it feels

strained?

(4) The amount of force/electricity needed to be generated.


(B) The areas that our group will be doing research into are:

(1) Types of turbines and the material used

(2) Concept of Hydroelectricity (Formulae to calculate it)

(3) Concept of Kinetic Energy

(4) Structure and material of the boat


(C) Our Progress, so far, is as follows:

All 4 of us have researched on the above areas and will be putting our findings on the blog. When this is done, all 4 members will view each other’s research and study it.

(D) The product that we are thinking of creating is as follows:

A hydro electrical powerboat.


Saturday, February 6, 2010

week 4 reflection--yonghwa

This week, our group was away at camp, and missed our IPW lesson. We managed to meet up at my house to carry on this week's assignment.

This is Worksheet 4

(A) The Guiding Questions that our group has selected to do research on are:
(1) What are the materials needed to built the boat?
(2) How do we prevent the boat from sinking?
(3) What is the maximum pressure on the ship before it feels
strained?
(4) The amount of force/electricity needed to be generated.

(B) The areas that our group will be doing research into are:
(1) Types of turbines and the material used
(2) Concept of Hydroelectricity (Formulae to calculate it)
(3) Concept of Kinetic Energy
(4) Structure and material of the boat

(C) Our Progress, so far, is as follows:
All 4 of us have researched on the above areas and will be putting our findings on the blog. When this is done, all 4 members will view each other’s research and study it.
(D) The product that we are thinking of creating is as follows:
A hydro electrical powerboat.

Week 4 Reflection--Jun Jie

Due to our secondary 2 adventure camp this week, we missed our IPW period. However, we still managed to meet up just yesterday to discuss on the 4 main points of research/guiding questions. They are as follow:

1) What are the materials needed to built the boat?
2) How do we prevent the boat from sinking?
3) What is the maximum pressure on the ship before it feels strained?
4) The amount of force/electricity needed to be generated.

However, we also have other important sub-research questions, such as:
1) How to connect the turbine without using wires?
2) How are we going to find out the amount of electricity needed?
3) How are we going to counter the irregular frequency of the flow of water?
4) What are the properties of different turbines?
5) What are the standard rules for building the ship?
6) What are the factors that put pressure on the hull?

Therefore, the main 4 research questions are already split equally among the 4 of us (1 person research on 1 question). As for the sub-research questions, we believe that while searching on the main 4 questions, we will also be able to find the answer to these questions.

Worksheet 4

Tuesday, February 2, 2010

week 3 reflection- yonghwa

Some questions that are going around in my head :What is the maximum pressure on the ship before it feels strained?
What are the machines used to generate the structure of the ship?

3 Things I learnt: The hulls of ships are subjected to many factors of pressure from the number of loads.
: There are ship classification societies who have established standard form for full loads.
: modern CAD computer programs are usually used today to generate much more detailed and powerful computer models of the structure.

Ideas I agree with: The many factors of pressure from the number of loads are essential to find out to stabilize the ship

Worksheet 3

Monday, February 1, 2010

Week 3 reflection --Jun Rong

In this week, we had discuss about how to convert the kinetic energy into hydro-electric energy.
We had mainly focus on the process of conversion so that it will lessen the burden of the whole project.

Some questions that are still going around in my head:
What materials are we gonna use to replace those that are used on an actual life size boat?
How are we going to substitute the turbine with a turbine that is smaller?

3 things I learnt:

I learnt that you need a water-turbine storing underneath the boat so that energy will be converted easily

We need to measure how much force needed for the boat to move which depends on the structure and materials use for the boat.

The power in available in a stream of water is;

P=\eta\cdot\rho\cdot g\cdot h\cdot\dot q

where:

  • P = power (J/s or watts)
  • η = turbine efficiency
  • ρ = density of water (kg/m³)
  • g = acceleration of gravity (9.81 m/s²)
  • h = head (m). For still water, this is the difference in height between the inlet and outlet surfaces. Moving water has an additional component added to account for the kinetic energy of the flow. The total head equals the pressure head plus velocity head.
  • \dot q= flow rate (m³/s)