2019年10月28日 星期一

Reflection on scavenger hunt

This surfing practice makes me realize that to retrieve information online can be more complicated and time-consuming than what I have thought. First, there are a variety of webpages which may provide useful information but contain numerous other features as well. For instance, when I look for itinerary for Disney Aulani and Jimmy Buffett’s collaborators, I need to browse through the pages to screen for relevant content. Second, just a blind input of the keywords may not be enough for a searching and I need to have some ideas where I can likely find the information. Say, in getting the price quotes of item 2, I need to search for online shopping sites for general items before I can really perform the purchase and review the best price. Third, even though no matching result comes up, I need not give up too quickly as the content may be just there waiting for me to type in the right searching keyword. This happens when I try to locate a 3-bedroom-house from Redefine. The website shows that there is no offer that meets my budget at the beginning, but after I eliminate the region constraint and look through all the available property nearby, then the target house shows up. Fourth, I now recognize that that there are quite a number of search engines other than Google, Yahoo, and BING, and there are free websites that help net-users create visual presentation of text data in other forms like tag clouds.

2019年10月21日 星期一

Reflection on HTML

To an ordinary layman like me, HTML (HyperText Markup Language) appears to be a hyper-scientific term which implies high-end computing knowledge as the acronym is associated with assorts of impressive electronic documents that are found on the World Wide Web. In fact, HTML is not a complicated programming language but just a collection of codes written in everyday US English. HTML is just a basic framework which confines the format of the web content so that it displays in the exact appearance that the writer wants it to be. For any text, images, sounds or videos to be displayed in a web document, the writer only needs to put them in markups of a pair of pointed brackets “<” and “>”. These contents need instructions in pointed brackets called tags that direct the exact display format, and most tags consist of opened <tag> and closed </tag> instructions. HTML is simple to learn and use, and it only requires us not to commit any typo mistakes. Despite its easiness, the effectiveness of HTML is boundless. It can enrich a webpage by empowering it the access to multitudes of related web documents via a creation of hyperlinks. Thus, it’s really worthwhile to invest time in learning what HTML can bring about in constructing a webpage.

2019年10月14日 星期一

What is the differences between email and traditional mail

E-mail can be seen as ordinary mail in an electronic format. Unlike traditional mail, it does not come in with a physical envelope or package. Instead, the message just arrives with a reminder display or sound. Email senders do not need to go to the post office to mail the document and no postman is needed to do the delivery either. The transmission is all done on-line via a computer or a smartphone. So, both the sender and receiver can exchange a message anywhere anytime at their own convenience, as long as there is a computer network available.

As compared to traditional mail, a fixed geographical address is unnecessary for receiving an email. So, a receiver will not miss his messages even he is on-the-go. Moreover, the delivery of an email is almost instant in contrast to days or even weeks that a postal mail usually takes. This enables real-time communication.

In addition,the cost of sending an email is almost negligible, even though the message is loaded
with attached files. This differs greatly from the traditional postal cost that is rated
according to the size and weight of the document.

There are two more vital differences between an email and a postal mail. First,traditional mail is usually confined to written text. However, the genre is almost unlimited in an email. A sender can easily send voice messages, pictures, graphics and video clips via email. Second, the number of receivers of a traditional mail is usually limited by the address. If the sender wishes to send the same message to a large group living in different areas, he has to rewrite or copy the text multiple times. Yet, there is another story in sending an email. A sender can send the same message simultaneously to a multitude of email addresses and he can also send it to a social media platform for a large crowd of viewers.

2019年10月2日 星期三

What do I want out of this class


Without much awareness, we have been living in a world enriched by virtual reality. In this era of Big Data, whatever information, entertainment, and service that we desire can easily be accessed from the Internet via a handy smartphone. If we wish, we can actually live isolated without losing contact with the outside world. Self-learning is feasible with support of a wide variety of online study packages. Home-office is practicable with back-up of availability of information exchange. Food and life accessories are attainable via on-line shopping, while health and security can be assured by on-line professional service providers.

Even for reality interaction, simulation programs allow situation-simulated training attainable.  People no longer need to go on-site for military, space or flight practice. There are virtual-reality apps to help. The application can even free potential fashion buyers the burden of trying-on clothes. Co-operation in multiplayer networked gaming is also achievable without geographical limits. As for relationship building and maintenance, there are on-line social networking sites like Facebook and Instagram to help. Social interaction is extended beyond face-to-face communication but with possible real-time responses territory-wide. We can keep up friendship in a virtual world.

It is marvelous that virtuality and reality can blend together to provide such an enriched life to us. Of course, things cannot be 100% perfect. I believe there would be unintended bad consequences. Say, many people are addicted to the virtual social world and make the smartphone the thing next to their life. Still, it would be educational to know about the underlying secrets of the development and success of a virtual-reality.