# November 16, 2017

Just here to write down a few things to do after the final exams:

1. Courses to enroll (EdX)-1. Calculus 1A https://www.edx.org/course/calculus-1a-differentiation-mitx-18-01-1x-0-2. Introduction to Biology https://www.edx.org/course/introduction-biology-secret-life-mitx-7-00x-7

-3. Cellular Solids 1 https://www.edx.org/course/cellular-solids-1-structures-properties-mitx-3-054-1x-0

-4. Molecular Biology https://www.edx.org/course/molecular-biology-part-1-dna-replication-mitx-7-28-1x

-5. Introduction to Solid State Chemistry https://www.edx.org/course/introduction-solid-state-chemistry-mitx-3-091x-5

2. Read a book in German
3. Finish reading Bernard Werber’s “The Empire of the Angels” Series
4. Finish all my Calculus workbooks

# November 9, 2017

Just finished 3 long hours of MicroProcessor. Today’s class was seemingly very simple and easy. Half of our class (including myself) missed our last session due to CAP+ and so I was worried about catching up on 5 whole lessons. However our loving  teacher decided to go easy on us and spent today mostly on the easiest concepts.

#include <mega128.h>
#include <delay.h>

#define TRIGGER PORTD.0

flash unsigned char seg_pat[10] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};
flash unsigned char seg_on[4] = {0x08, 0x04, 0x02, 0x01};

unsigned char echo_st = 0;
unsigned char dsp_no = 0;
unsigned char dist = 0, cnt = 0;
unsigned int N1000, N100, N10, N1;

void Distance_out(void);

void main(void)
{
DDRB = 0xFF;
DDRD = 0b11111101;
DDRG = 0xFF;

PORTB = 0x0;
PORTD = 0x0;
TRIGGER = 0;

TCCR0 = 0b00000111;
TCNT0 = 176;
TCCR2 = 0b00000000;
TCNT2 = 138;
TIMSK = 0b01000001;
SREG = 0x80;

while(1)
{
cnt = 0;

TRIGGER = 1;
delay_us(15);
TRIGGER = 0;

while(PIND.1 == 0)
TCCR2 = 138;
TCNT2 = 0b00000010;

while(PIND.1 != 0)
{
if(cnt > 300) break;
}

TCCR2 = 0b00000000;

if (cnt > 2 && cnt < 300) dist = cnt;
else dist = 300;

Distance_out();
delay_ms(100);
}
}

void Distance_out()
{
int buf;

N1000 = dist / 1000;
buf = dist % 1000;
N100 = buf / 100;
buf = buf % 100;
N10 = buf / 10;
N1 = buf % 10;

}

interrupt [TIM0_OVF] void a (void)
{
unsigned char pat;

TCNT0 = 176;
if(dsp_no == 0) pat = N1;
else if (dsp_no == 1) pat = N10;
else if (dsp_no == 2) pat = N100;
else pat = N1000;

PORTG = seg_on[dsp_no];
PORTB = (seg_pat[pat] & 0x70) | (PORTB & 0x0F);
PORTD = ((seg_pat[pat] & 0x0F) << 4) | (PORTD & 0x0F);
dsp_no = (dsp_no + 1) % 4;
}

interrupt [TIM2_OVF] void b (void)
{
TCNT2 = 138;
cnt++;
}


▲ Assessment on UltraSound

[MOTOR_EX1-2]

#include <mega128.h>

typedef unsigned char u_char;

flash unsigned char seg_pat[10] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};
flash unsigned char seg_on[4] = {0x08, 0x04, 0x02, 0x01};

u_char dsp_no = 0;

u_char pwm = 10;

void ocr3a_set(void);

void main(void)
{
DDRB = 0xF0;
DDRD = 0xF0;
DDRG = 0x0F;
DDRE = 0b00001000;
PORTE = 0x0;

EIMSK = 0b00110000;
EICRB = 0b00001010;

TIMSK = 0b01000000;
TCCR2 = 0x05;
TCNT2 = 178;

TCCR3A = 0b10000010;
TCCR3B = 0x1A;
TCCR3C = 0x0;
ICR3H = 0;
ICR3L = 99;

ocr3a_set();
SREG = 0x80;
while(1);
}

interrupt [EXT_INT4] void ext4 (void)
{
if(pwm < 97) pwm = pwm + 5;
ocr3a_set();
}

interrupt [EXT_INT5] void ext5 (void)
{
if(pwm > 3) pwm = pwm - 5;
ocr3a_set();
}

void ocr3a_set(void)
{
OCR3AH = 0 ;
OCR3AL = pwm;
}

interrupt [TIM2_OVF] void timer2_int(void)
{
u_char dsp_val;

TCNT2 = 178;
PORTG = seg_on[dsp_no];

if(dsp_no == 0) dsp_val = pwm % 10;
else if(dsp_no == 1) dsp_val = (pwm % 100) / 10;
else if(dsp_no == 2) dsp_val = pwm / 100;

PORTD = ((seg_pat[dsp_val] & 0x0F) << 4) | (PORTD & 0x0F);
PORTB = (seg_pat[dsp_val] & 0x70) | (PORTB & 0x0F);

dsp_no = (dsp_no + 1) % 3;
}



▲ Assessment on Motor

11:59 P.M

# November 1, 2017

My dad arrived at midnight yesterday from the Philippines. With lots of presents, mostly my childhood sweets – Trust me, I could go on for months eating only Dewberries. Happy filling for me!

Also, the final announcement for KHNP is today. I’m not worried my name isn’t going to be in the list of accepted candidates. But I do worry about the afterwards. What if I get in? And what if I don’t? I’m seriously stressed out.

10:54 AM

Well I didn’t make it in KHNP. I’m not too depressed though – in fact, I’m not even a little bit sad. It wasn’t that I didn’t want to get in, of course. I truly did. But I strived to reach my best and if the results stated that I didn’t qualify, let that be it.

# October 21, 2017

So when I started this blog, I promised myself to blog at least once a week.

I really CAN’T believe I came back three months after since my last post on my journal page.

*

The biggest issue from my missing 105 days would be yesterday, when I had my job interview for KHNP (Korea Hydra Nuclear & Power Co.) I was thrilled to get the day over with, to be honest really. I was overwhelmed by the whole week because my interview and mid term exams were scheduled on the same day. I had English and Physics II tests on Tuesday, Chinese and Calculus on Wednesday, and Literature on Thursday as well as my interview in the afternoon. I screwed up Calculus and Literature because I couldn’t find the time to study them both, and I think giving up on the two to get myself focused more on the other subjects and the interview wasn’t such a bad idea considering they were the top two subjects that requires the most time and effort.

The interview was on 3:35 p.m., but I went out early to get a feel of the atmosphere. Too early, I guess, because by the time I arrived the clock was pointing 2:00 sharp.  I grabbed my papers to prepare for the debate session, and time went pretty fast.

By about 3:00, all other interviewees arrived and gathered in the hall. There were about 15 students including myself, and I was the only girl. Of course.

When the minute hand stroke 8 a person called for us to line up with our application forms and identification documents. We were then divided into two, to decide which  group would have their individual or debate session first. I was sorted to group B, and I was told to line up with 6 other students and get ready for the debate.

Shortly after, we entered a room with 3 examiners on the front and 7 desks forming a U, with the opening facing them. They introduced how the debate was going to be proceeded, and we were given 10 minutes to read the papers laid on our desks. Because I had no information about the topic, I was a little astounded by what was laid in front of me. Although the topic wasn’t too bad, it was definitely NOT what I hoped for.

The debate went on for 30 minutes. All other students had excellent ideas and outstandingly defended their states but I don’t think I did so well. Buffering on my statements were one thing, but I said something completely out of the blue that I surprised even myself as the words were coming out of my mouth. Time went fast and we left the room, all with frowns on our faces. Nobody seemed to be pleased by their performances.

While waiting for our individual interviews, we got to know each other and were offered the pleasure of food to fill our empty stomachs. I hadn’t eaten anything since I woke up, so I was basically starving. Talking was fun- I really got the nervous feeling out of my system and they all had a good sense of humor. Everyone seemed nice and sweet.

I was last to get my interview, and by the time it reached me I was tired from waiting so long that I felt happy to get myself into the room and answer questions. There were 3 interviewers, again, loading me with ridiculous amount of questions that I swear I gave up thinking half way through the interview.

I packed my things and left the conference halls, calling my advisor and mom about the whole thing. I was tired – mentally AND physically. Also, as if the day wasn’t enough, today was still Thursday – which meant that I would still have school when I wake up tomorrow. All I could think of was how I would drag my damn worn out body to shower then bed.

12:59 PM

# July 29, 2017

I went on a short trip to Russia, and I completely lost track of life.

*

Russia was amazing. It was a school thing, actually, and team members were selected after papers and interviews because our purpose was to teach and learn. To my understanding, this was a program arranged by ALCoB (APEC Learning Community Builders) and NEFU (North-Eastern Federal University in Yakutsk State) for the educational sake of both Russian and Korean students. Basically we stayed in the NEFU dormitories and everyday we went to the NEFU buildings to teach Russian students about programming and HOVIS, our cute little green robot.

HOVIS was a real pain in the ass when we were assembling it, but programming it was easy to teach since my two partners were such smarties. We communicated perfectly, and they were so eager to absorb every little detail I could give that I had to spend extra hours in the dorms to prepare for the lessons. I can still see and hear their smiles and laughter.

We were also assigned a team activity, where teams became imaginary companies and had to present a detailed presentation about their product by the end of the week. Our team focused on the field of service, more specifically on smartphone application. I suggested an app which ill users could post about their symptoms, and would be provided with a list of related medicines and comments from licensed doctors. Everyone agreed on proceeding with my idea, and I became our team leader and “CEO”.

My overall stay in Russia was a fantastic mist of blue and yellow. The weather was always super hot and dry, which, didn’t seem to make sense – sure it could be dry, but I mean hot? Russia? HOT? Seriously? One would normally imagine Russia to be snowy to the human height. But as if to tease my stereotype, the temperature was mostly very, very, hot. Due to the heat and the low humidity, mornings were accompanied by forest fires and thick fogs. Other than that the environmental conditions were somewhat similar to those of Korea. The students I met in Russia were hard-core extroverts. I am a socially outgoing person myself, but really, I’ve never met such peppy folks. I enjoyed their company so much and I’m still in contact with some of them.

*

It has been over a week since I returned and it’s vacation. It’s a short summer break roughly of about a month or so, but despite that I have a long bucket list to cross out. First up, I’ve got to lose the weight I brought from Russia.

11:38 PM

# July 10, 2017

Exams, Over, Thank God.

Actually the exams ended last Friday, but I spent the weekend burying myself under my thick ivory covers. I did great on Calculus, but not so well on Physics. I guess I overthought too much.

*

A question from our recent Physics test I mistakenly solved was about finding the ratio between two specific heat with given applied heat, temperature change, and mass of both substances.

The specific heat capacity of a substance or simply specific heat (c), is the amount of heat energy required to raise the temperature of one gram of the substance by one degree (ºC). It can be easily calculated using the Heat Formula q = mcΔT, where q is the heat energy gained or lost by a substance, m is mass (in grams), and ΔT is the change in temperature.

I wasn’t focused enough – I solved it as if the two substances were applied with different heat and therefore came out with an answer of 3:8, whereas the correct response was 1:2. I should update this post when I get my complete results and feedback.

*

I couldn’t stop smiling as I went through my Calculus test sheets – I could see through the tricks laid out, and I still had 30 minutes left to go over the whole test about three more times.

9:09 PM

# June 26, 2017

I want the rain to forever pour down and gulp me up until I’m wet, so wet, I would weigh five times heavier, and I’d be sucked down and hugged by the cold soft soil; I would daydream in it, careless about time and people and everything else, and dear God I promise I would be the happiest thing alive.

*

Today was raining lots and lots I almost wished I could play in the wet damp earth, getting myself soaked from head to toe. Just thinking of it relieved some stress I guess, and of course I forgot to bring back my umbrella from school. Mom was so upset.

I hadn’t eaten anything today – again. I’ve been starving myself for so long I can’t even differentiate hunger from nausea anymore. I hope I don’t sound too creepy. The upcoming exams would have everything to do with my loss of appetite.

6:55 PM