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Coursera replacement

I will choose the recommended course named “Philosophy and Critical Thinking”:

Course Certificate


Task 1:

Article 1: Enabling Green IT through Energy-Aware Software

Software behavior is the key factor determining energy efficiency in everything, from small devices to servers in data centers. This paper introduce some techniques that can be applied to reduce energy consumption of drivers and applications. As the matter of fact, the faster we can complete the task and get the computer back to idle, the more energy we can save. Therefore by increasing computational efficiency using efficient algorithms, multithreading and vectorization we can leverage energy efficiency. We also can apply data-efficiency methods such as managing disk I/O, prefetching and caching to save energy. Last but not least, software applications can take advantages of context awareness to save energy.


Video 1: We can recycle plastic!

Although we throw out a huge amount of garbage every day, we’re now starting to recycle and recover materials from our end-of-life stuffs. However just 10% of plastic are recovered, compare to 90% of the metals, even when plastics are several times more valuable than steel. The talk went on to explain the reasons of this situation and how dangerous it was. To break the status quo, he suggest a new and more sustainable way to recycle plastic, which is not just sustainable from an environmental standpoint, but also sustainable from an economic standpoint as well. This technique


Video 2: The City of Stockholm - The Sustainable City

The video gave us an idea about how a sustainable city would be like, from garbage recyling system, public transportation system waste collection system. With the supporting of smart and green technologies, Stockholm is now named as a green capital in Europe.


Carbon footprint Analysis and Reflection

Exam questions

1. Sustainability is not just about saving energy, but why saving energy has received more attentions than others?

As human behaviors is the core of the problem, understanding the motivations that encourage people care about saving energy may help us recreate the similar motivations in other sectors. The response should also discuss about obstacles which prevent people from caring about other sectors such as the complexity of required technologies, living standards, cultural aspects and the development level of a country.

2. How to change the consumer culture from embracing newness toward more sustainable purchasing?

Consumer culture that embrace newness are the main reasons for many environmental issues such as e-waste, pollution and the exhaustion of raw materials. Depending on educational levels, financial income, culture or lifestyle, the levels of embracing newness may vary but mainly this culture is facilitated by the ego in each and every one of us. Deep down we all want to be special and to be acknowledged. Since we understand more about this culture, we can take actions to change it.

3. Do you think rewards can help people act more sustainable for both long-term and short-term? Propose some kinds of reward.

The problem once again relates to human behavior which means we have to analyze the impacts of culture aspects, educational levels, living standards and development levels. Based on the responses, we can have a broader view about various perceptions towards rewards approach. This would be very useful for further research about human behaviors in sustainable development.

4. Analyze the three pillars of sustainability.

Based on the answers, we can justify how much the responders understand about sustainability. A good answer should explain what these three pillars are and the relationship among them. Some examples will be necessary to illustrate the explanations.