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  • Ryan Rivera 11:21 am on May 23, 2017 Permalink | Reply

    Which topic/s in class made an impact to you? Why?
    Vectors. I think if not for Vectors, I would not be able to understand most of the topics in CS130. For me, Vectors served as the stepping-stone to greater things both in CS130 and in life.

    If you can summarize this course in one word or sentence, what would it be?
    Running Man!

    What would be your parting message to the class?
    I think that the song I’ll Make A Man Out Of You from Mulan (1998) perfectly depicts the class with Sir Paul as Captain Li Shang and the rest of us as Mulan, training and teaching the class with patience and determination with the goal of making true Iskolars ng Bayan out of his students. Thank you for not giving up on us, Sir Paul!

  • Ryan Rivera 12:27 am on May 3, 2017 Permalink | Reply


    The Fourier transform is not just limited to simple lab examples. When used in real situations it can have far reaching implications about the world around us.

    Take for example the field of astronomy. Some times it isn’t possible to get all the information you need from a normal telescope and you need to use radio waves or radar instead of light. These radar signals are treated just like any other ordinary time varying voltage signal and can be processed digitally.

    One recent example of this technique was the NASA Magellan satellite which was released from the space shuttle Atlantis on 4th May 1989 and sent to Venus on a 15 month journey that took it one and a half times around the sun.

    Source: http://w.astro.berkeley.edu/~jrg/ngst/fft/astronmy.html

  • Ryan Rivera 9:30 am on February 12, 2017 Permalink | Reply

    Kaleidoscope is a device, typically cylindrical or triangular in shape, consisting of three or more mirrors. We put small colorful objects, such as beads and pieces of glass in the instrument. The light enters from one end and the viewers look through the other end. These mirrors act as reflectors and provide multiple line of symmetry to the patterns due to repeated reflections in the mirror.

    Source: http://byjus.com/maths/reflection-and-symmetry/

  • Ryan Rivera 8:38 am on January 27, 2017 Permalink | Reply

    Week 2: Vectors

    In what other ways can we use vectors? Give one sample application and describe/illustrate how the vector can be used.

    Many people use GPS (Global Positioning System) navigators, but not everyone knows that these devices constantly calculate vectors for you.

    The Global Positioning System (GPS) is a satellite-based navigation system made up of at least 24 satellites. At most times and places, at least three satellites are visible. GPS satellites circle the Earth twice a day in a precise orbit. Each satellite transmits a unique signal and orbital parameters that allow GPS devices to decode and compute the precise location of the satellite. GPS receivers use this information and trilateration to calculate the user’s exact location. A calculation from three satellites will give the longitude and latitude of the receiver. A calculation from four satellites will also give altitude. Essentially, the GPS receiver measures the distance to each satellite by the amount of time it takes to receive a transmitted signal.

    Now, how are vectors used in GPS? The receiver does not just triangulate its position once it constantly listens for the satellites and calculates changes in the receiver position from changes in the triangulation results, it also calculates any changes in distance and direction from the last known position. Within a very short time it has taken several readings, enough to calculate the velocity of your travel. The result? A speed in a particular direction – a velocity vector – which is always part of the receiver’s calculations.

    Paul A. Tipler, Gene Mosca, Physics for Scientist and Engineers, p. 82

  • Ryan Rivera 10:32 am on January 21, 2017 Permalink | Reply

    Ryan (na girl) 😋 

    Week 1: Introduce yourself

    What’s your name?

    Hi, my name is Ryan Avi G. Rivera. You can call me Ryan. 😊

    What were your thoughts when you enrolled in this course?

    l was not actually aware what CS130 is about. So when my friend told that it was more on Mathematics than programming, I was very excited since I enjoy learning concepts and applications more than programming. 😊

    How comfortable are you with math?

    I’m comfortable with math when I give my best effort in understanding and learning the topic. I practice solving problems again and again until I master how to solve that kind of problem. So, if I give my best efforts to CS130, I think I’ll have a lot of fun with the course while learning. 

    What’s your dominant feeling right now?

    I feel excited with a lot of things. I feel excited with the new semester, the Miss Universe 2017, the mountains I’m going to hike this year, and with what 2017 has in store for me. 😊

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