Thursday, July 24, 2008
My 2 symbols
Series of chain reactions of extinction of living things is the most destructive process that can occur in any ecological community.
So, I want to show scary eye ball of approaching extinct animal to remind human to stop irresponsible actions which can cause Global Warming.
After stopping those actions,
all the living things of this world may be will not be sacrificed again.
My first symbol:
My reference picture:
After Dr Ken Neo asked us to create more positive symbol,
use the below picture to be reference to draw a hand under the eye ball.
I want to use the hands to represent protection of extinct animals
My 2nd sketch:
My 2nd symbol:
My description of the symbol
Save the approaching extinct animal
Meanings:
All of the humans should take action to protect approaching extinct animal
Metaphor:
eye ball - represent the extinct animal
hands - represent protection
Meaning of the shape:
Circle –
a) represent protection to animals
b) represent that we should have solidarity to do that
Meaning of the colour:
Red:
Indicate danger of extinct animal. Red-orange which using on the eye ball corresponds to desire & thirst for action to protect animals.
Black:
It is a mysterious color associated with fear, the unknown & death;
in heraldry, black is the symbol of grief,
so I used black colour in the eye balls.
The black outline of the two hands notes strength.
In addition, black contrasts well with bright colors, when combined with red or orange, it is a very powerful colors to give prominence to the symbol.
White:
Represent a successful beginning to protect animal from now.
Orange:
It combines the energy of red and the happiness of yellow and represent the enthusiasm & determination to protect animals.
Relation to the area of global warming of your choice:
Human’s irresponsible actions caused global warming. Global warming sacrificed many innocent animals’ lives. Human should stop to do those actions to save the approaching extinct animals!
Monday, July 21, 2008
My steps to create the symbol
Press "View"(on the above toolbar) & tick the "Show Ruler"( or press "Ctrl + R")
Drag out four lines from the ruler to set guide lines
Rename the layer
Lock the layer to prevent the movement of the ruler's position
We can press " Ctrl + " " to show guide line
2. Place template
Create new layer
Press "File" (on the above toolbar) & choose "Place"
Browse my scanned sketch
Tick the "Template" & don't tick the "Link"
Unlock the layer to change template's size
After changed the template's size, lock the layer
3. Tips for easy viewing
a) Colour swatches
Delete the certain colours which I don't want
Drag the colours which I want to use to colour swatches & rename them
Press the small triangle in the colour swatches window & choose list view for easy viewing
b) Zoom in & out
Press "Windows" (on the above toolbar) & tick the "Navigator"
We can use it to zoom in & zoom out easily.
( Beside the “Navigator”
Ctrl + "+" can use to zoom in,
Ctrl + "-" can use to zoom out,
Ctrl + "0" can use to view via fit in windows)
c) Expand pen tools box
Drag the pen tools box by the small triangle for easy using
4. Begin to draw eye
Draw 1 circle according the template
Copy the circle
(Now I have two circle)
Double click "Scale" on the tool box
I change the Uniform Scale to [35%]
The copied circle contrated according the percentage
Draw another 2 circle onto the eye ball
5. Fill colour of eye ball
Fill the small eye ball with black colour
Deselect the small eye ball by using "Selection tools" press on blank section
Choose white colour
Use "Mesh tools" to make it look like 3D
Change the two circles' (on the eye ball) stroke to "none" to make sine on eye ball
6. Draw the hands
Choose fill colour, stroke weight & colour as you like
Press "Pen tool" and then press on blank section & don't release then drag the line to curve
After finished drawing hands by curve line,
press "Selection tool" , select the parts which I want to group & right click,
then choose "Group" ( or press "Ctrl + G" ) to prevent them to move dividually
Copy( Ctrl + C) & paste(Ctrl + V) to make another hand
Right click the copied hand, choose "Transform" & "Reflect"
Choose "Vertical" & fill the "Angle" blank with 90
Adjust the position of hand
7. Fill colour of eye white
Fill the big circle with gradient
Change colour after click the pen on the Gradient window
(we can create more gradient slider of different colours by click on the space between the two pen)
8. Draw blood silk of eye
Draw red curve line by "Pen Tool"
Group all layers & move the symbol to centre
10. Finish!
Sunday, July 20, 2008
An Effect of Global Warming ~ EXTINCTION
Extinction is the cessation of existence of a species.
- Species become extinct when they are no longer able to survive in changing conditions, against superior competition or unable to move to a new environment where they can survive.
- Extinction becomes a certainty when there are no surviving individuals that are able to reproduce and create a new generation.
- Humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of new predators & food competitors, overhunting, and other influences.
- Some of the species(maintained only in zoos or other artificial environments) are functionally extinct, as they are no longer part of their natural habitat and it is unlikely the species will ever be restored to the wild.
When possible, modern zoological institutions attempt to maintain a viable population for species preservation and possible future reintroduction to the wild through use of carefully planned breeding programs.
- A number of organizations, such as the Worldwide Fund for Nature, have been created with the goal of preserving species from extinction.
- Governments have attempted, through enacting laws, to avoid habitat destruction, agricultural over-harvesting, and pollution.
Nature preserves are created by governments as a means to provide continuing habitats to species crowded by human expansion.
-Advocacy groups, such as The Wildlands Project and the Alliance for Zero Extinctions, work to educate the public and pressure governments into action.
- While many human-caused extinctions have been accidental, humans have also engaged in the deliberate destruction of some species, such as dangerous viruses, and the extirpation of other problematic species has been suggested.
- However, people prioritize day-to-day survival over species conservation; with human overpopulation in tropical developing countries, there has been enormous pressure on forests due to subsistence agriculture (including slash-and-burn agricultural techniques that can reduce endangered species's habitats).
- If humans speed up the extinction rate over the next 50-100 years, it would take at least 5 million years for natural speciation to rebuild the biodiversity we are likely to destroy this century.
- The extinction of a species of plant could be accompanied by a ten- to thirty-fold loss among other organisms due to the interrelationships that occur in an ecosystem.
- Series of chain reactions is by far the most destructive process that can occur in any ecological community.
- If we wish to guarantee the survival of species whose fates we care about, we have to stop thinking about them in isolation from their environments.
- We need to educate the local population about the effects they are having on their wildlife and about how they can help to protect it and help it flourish again.
- Dave Tilman (a member of the National Academy of Sciences, the country's top scientific body, the author of four books and more than 140 scientific papers) argues saving the planet's biodiversity will require modifying human preferences for driving bigger vehicles, eating more meat and generally consuming more of everything around us.
http://en.wikipedia.org/wiki/Species_extinction
http://answers.yahoo.com/question/index?qid=20070416112405AADA9B2
http://answers.yahoo.com/question/index?qid=1005121502450
http://news.minnesota.publicradio.org/features/2005/01/31_olsond_biodiversity/
Saturday, July 19, 2008
My Global Warming Background Research
- Global warming is the increase in the average measured temperature of the Earth's near-surface air and oceansnd since the mid-twentieth century, and its projected continuation.
WHY??? ~ Causes:
- External forcing, including variations in the earth's orbit around the Sun (orbital forcing), changes in solar luminosity, volcanic eruptions, and atmospheric greenhouse gas concentrations.
(The greenhouse effect is the process by which absorption and emission of infared radiation by atmospheric gases warm a planet's lower atmosphere and surface.)
- Human activity since the industrial revolution has increased the concentration of various greenhouse gases, leading to increased radiative forcing from CO2, methane, tropospheric ozone, CFCs and nitrous oxide.
HOW??? ~ Effects:
- cause more water to evaporate into the atmosphere.
- clouds emit infrared radiation back to the surface, and so exert a warming effect
- will reduce the decrease of temperature with height, producing a negative lapse rate feedback that weakens the greenhouse effect.
- ice near the poles melts at an increasing rate, then land or open water takes its place. Both land and open water are on average less reflective than ice, and thus absorb more solar radiation.
- release of CO2 and CH4 from thawing permafrost, such as the frozen peat bogs in Siberia, is an additional mechanism that could contribute to warming.
- the resulting low nutrient levels of the mesopelagic limits the growth of diatoms in favor of smaller phytoplankton that are poorer biological pumps of carbon. So, the ocean's ability to sequester carbon decline as it warms.
HOW & HOW??? ~Attributed and expected effects:
- glacial retreat
- Arctic shrinkage
- worldwide sea level rise
- flooding and drought.
- changes in the frequency and intensity of extreme weather events
- changes in agricultural yields
- reduced summer streamflows
- increases in the range of disease vectors
- increasing deaths
- economic losses projected
- species extinctions
http://en.wikipedia.org/wiki/Global_warming#cite_note-77