koku's life journal

NSWI141 - (Introduction to networking) [lecture] - going over www again, we have a homework due the end of the semester, making a static site of three documents in pure html and css, subject can be anything as long as it contains the elements it's meant to have, the only thing i've learnt that i didn't know prior is the word selenocetric, which was mentioned on a document the teacher showed as an example of a static website, not really having anything to do with websites though

NSWI120 (Principles of computers) [lecture] - moving from the serial mouse onto buses (not motorbuses) specifically going over I2C which i already knew a lot about from iot classes in high school, but i learned why the idle state is SCL high, it's because there is a pull up resistor

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koku daily message:
cosh(e)

no class on tuesday due to the state holiday

NTVY014 (Physical education I) [swimming] - breaststroke arms and breathing.. i struggle with breathing on time.. usually end up breathing in some water

NMAI057 (Linear algebra 1) [lecture] - symmetrical groups and attributes of permutations like the sign and amount of inversions and the inversion of the permutation (2 different things!!) then we started skew fields, nice stuff

NMAI057 (Linear algebra 1) [tutorial] - there was a quiz again, i think i demolished and left only one piece of rubble (there was an equation of matrices and the solution only worked on matrices that commute so i wrote out all the possibilities when they commute but forgot about the inverse, after the quiz we inverted some matrices and did some things regarding attributes of permutations

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koku daily message:
thank you for observing the rules of the quiet zone

NSWI141 - (Introduction to networking) [lecture] - ftp!! distributed databases in which we mentioned gopher and then went into detail over www and http, also i'll mention he calls computer mice rats and that's silly, for the next three weeks he won't be here though so we'll have a different teacher and we'll do html and stuff i think

NSWI120 (Principles of computers) [lecture] - boring class again.. we did bit shifts and bit rotation, and finished the serial mouse with signed integers :spiral_eyes: also the teacher was late by ten minutes and i was worried that i wouldn't make my train in time but i did

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koku daily message:
free at last

NTVY014 (Physical education I) [swimming] - we finally did proper backstroke, arms and legs and everything! and also breaststroke legs but on stomach, still no breaststroke arms though

NMAI057 (Linear algebra 1) [lecture] - attributes of inverse matrices, attributes of regular matrices, and matrix equations, after we started with groups and its axioms: association, neutral term and inverses.. also abelian groups

NMAI057 (Linear algebra 1) [tutorial] - quiz, i thought my solution was good but i must have made a small computational error because when plugging in my answer on the first row it was off by two and i didn't find the error, after the quiz we did proofs of matrix arithmetic statements, then matrix multiplication.. one is clearly easier, but either can appear on next week's quiz

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koku daily message:
koku's nest

alright, i've put off writing blog posts for a bit, but i'm back!! gonna write all of monday to thursday right now on the train

NMAI069 (Mathematical skills) - had a quiz on propositional logic, was simple, after that we went over something or other..

NDMI002 (Discrete mathematics) [lecture] - finished binary relations with the theorem "about the long and broad" proving that the product of the width and the length of a partially ordered is greater than or equal to the its size, then we started with combinatorial counting, permutation is bijection of X -> X, then something about power sets

NDMI002 (Discrete mathematics) [tutorial] - a quiz, i felt rather confident with my solutions, but then the teacher wrote the best solution and they were much more elegant than mine.. after we did some exercises on functions and equivalence relations and didn't have time to get to the partially ordered sets

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koku daily message:
time is fuel

NPRG062 (Introduction to algorithms) [tutorial] - more big O notation stuff, proofs of various statements like if f(x) has O(g(x)) does g(x) have O(f(x)) and what not, which this specifically i disproved in front of the class, that was rather spiral eyes emoji..

NPRG030 (Programming 1) [tutorial] - two people showed their solution of the homework, the teacher then showed us how to program a select sort and how to use the debugger in vscode, i use vim though.. there was something else but i can't recall what

NJAZ070 (English for Upper-Intermediate Students I) - went over homework and had a listening exercise, there must have been more.. possibly speaking of some form.. idk

this was where it ended last week, but every other week i have one class more, which i will talk about in a bit, but that class starts three and a half hours after english ends.. so to pass the time i went to the airport, which i think was a nice experience

NMSA230 (Introduction to R programming) - the teacher got that aoko aozaki fit, went over some structures like: list, logical, for, character, factor, date and posix time.. some things i thought were curios are you can compare a vector to a value and it compares it component by component and the result is a vector of booleans, you can use apply as a shorthand for a for cycle, factors, in general seem cool, they are for categorical values and working with time is silly

koku daily message:
aeroplane?!

NPRG062 (Introduction to algorithms) [lecture] - we were told about ways of finding if an item exists in an array including binary search (my beloved), but that one only works if the array is sorted.. se we went over some ways to order an array, bubble, selection and insert sorts all having O(n^2) and merge sort, which has O(nlog(n))

NPRG030 (Programming 1) [lecture] - boring class.. there are functions, you can have an f"string" which allows for formatting of sorts.. i don't really care.. at the end he wrote a program which counts all the instances of distinct words in input, he wanted to throw in romeo and juliet but couldn't find a plain text so he copied a whole site that had it, turns out that "Romeo" appeared 119 times, "Juliet" only 65 times and "love" 70 times

next week we don't have classes on tuesday bacuase of immatriculation and the next week we have a state holiday on tuesday..

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koku daily message:
something is rotten in the state of denmark

i'm sorry for forgetting to post this the day of

NSWI141 - (Introduction to networking) [lecture] - i have had a few networking classes in high school, so nothing has been new yet, we did the iso osi model, the tcp/ip architecture and were told about nat, also i finally learned the difference between uri and url, essentially url and urn are sub divisions of uri and urn doesn't exist anymore

NSWI120 (Principles of computers) [lecture] - figuring out how to define the start of a communication using a start and end condition, which has a 20% overhead, i've learnt the difference between baudrate and bitrate (baudrate includes the overhead bits, so at 1000 baudrate and 20% overhead there is 800 bits per second) after we went over a different way of synchronisation being having a clock wire, then we went ver clock recovery which is used by usb

the professor who teaches us this class gives out candy bars for when someone asks a question by chucking it at them.. someone in the back asked something but the candy the professor threw didn't fly and hit me, in the front, instead, i picked it up to send it back but by the time i picked it off the floor he threw another one instead.. that one also didn't fly so he threw a third which finally got there, he told the two f us hit by it to keep them, as we won them

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koku daily message:
lazy days are not so bad, sometimes

NTVY014 (Physical education I) [swimming] - we had a swimming exam last week and i didn't swim 100m in 3:15 so i have to take swimming classes this semester, it was just the very basics for now, which i know, i am capable of swimming, just not very good at it

NMAI057 (Linear algebra 1) [lecture] - we went over how to solve a matrix, then homogeneous and inhomogeneous matrices and how they relate, that you can solve a homogeneous one generalised then get a single solution of the inhomogeneous one and add the resulting vertices together to get all the solutions of the inhomogeneous one

NMAI057 (Linear algebra 1) [tutorial] - we started with a quiz, it was very straightforward, we were given three non-collinear points on a plane a had to get a parabola through it.. i failed however, made a small mistake and noticed it too late to fix it.. after the quiz we did a few matrices, some homogeneous some not, it's rather simple

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koku daily message:
misuse will be punished

NMAI069 (Mathematical skills) - we did propositional logic, nothing that i didn't already know

NDMI002 (Discrete mathematics) [lecture] - binary relations, their compositions, how they all relate to functions and composite functions. then we did properties of functions (injective, surjective and bijective) if they are the same size and finite then being injective proves it's surjective and vice versa. properties of binary relations, which are reflexive, symmetrical, anti-symmetrical and transitive

NDMI002 (Discrete mathematics) [tutorial] - we went over types of proofs (direct, indirect, by contradiction and by induction) and then had exercises where we had to prove various statements using those methods

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koku daily message:
tautology