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Note/Book

[ISTP] Virtuoso. Introverted Thinking Type with a Sense of Extroversion (MBTI)

ISTP is a cognitive function of Ti-Se and therefore a realistic rationalist. They analyse situations and problems logically and find real, practical solutions. My impression is that the term 'tough loner' best describes this type.The degree of unwillingness to be bound by rules and regulations is the highest among MBTI's. Although he has considerable emotional ebbs and flows on the inside, he rarely shows them on the outside and is often seen as a rational and calm person.
Note/Book

[ESTP] Entrepreneur. Extroverted Sensory Type with Introverted Thinking (MBTI)

ESTPs are Se-Ti cognitive functions, so they make logical decisions based on information obtained through the five senses; my impression of ESTPs is that they are 'hedonists' in the best sense of the word; like ENTPs, they are impatient and quick-witted, but unlike ENTPs, they are more realistic and take action as soon as they think of it, which is even higher than ENTPs. Even more so than ENTPs.
Note/Book

[ESFP] Entertainer. Extroverted Sensory Type with Introverted Emotion (MBTI)

ESFP is a cognitive function of Se-Fi, so it makes decisions based on its own emotions from information obtained through the five senses. They are sociable and jovial and like to be in groups with friends, conversely, prolonged 1:1 conversations would be awkward or uncomfortable as the ESFP would get bored.
Entrepreneur

[SNS Marketing] How to Create FB and Insta Ad Reel Videos and Verify A/B Testing

This article describes how to create reel-to-reel video ads and how to distribute ads. In my case, I have a policy of "first running a small test with a daily budget of ¥1,000 for a week" for SNS advertising, so I started with a daily budget of ¥1,000 for this time as well.When I first conducted a trial transmission with a budget of ¥1,000 for the following video, the CTR (cost per advertisement until website click) was about ¥30 at first, but it was gradually optimised afterwards, and finally dropped to nearly ¥10 after about three days.
built-in(C++)

[ESP32] How to migrate from Arduino IDE to Platform IO

After switching from Arduino to PlatformIO, I can now use VSCode to centralise all code creation, Build and Upload, and I feel that the Build speed is about twice as fast as with Arduino. It's also good that it automatically searches for ports.
application(Flutter)

[Development] Reflections on Developing a Large Function: Priorities for Function Development and Testing

Although we initially assumed that it would take about a month, we were able to finish the development in about half the time (currently waiting for PR review), which was good in itself, but I would like to describe my reflections (mindset and how efficient it is to proceed with the development) after developing a large function this time as a reminder. I would like to describe it as a reminder of the experience of developing a large feature this time (mindset and how to proceed efficiently with development).
Development/Design

[AWS] How to manage access restrictions on text-to-speech files using S3 signed URLs.

A pre-signed URL provides temporary access to an object in a cloud storage service (e.g. Amazon S3); this URL is signed with specific permissions and an expiry date, allowing the user to securely download or Uploading.
application(Flutter)

[Scenario test tips] How to break it down into MECE and subdivide it moderately.

Notes and tips on writing scenario tests are described. What is required in writing scenario tests is the ability to strike a balance between breaking down the conditions into MECE but not over-dividing them. Scenario testing does not require direct description of the programming code.In other words, it can be described by non-engineers. It may be efficient for the PdM or UIUX person who created the mock-up, for example, to write the scenario test as it is.
Entrepreneur

Procedure and Points to Note when Doing the Procedures for Increasing Capital by Yourself

The other day, after a long time, I prepared the documents for the capital increase procedure by myself and submitted them to the Legal Department, and as expected? I found a flaw and the Legal Affairs Bureau called me and asked me to correct it (they were very polite), so I am writing this down as a reminder. The paperwork is not that difficult and a simple capital increase can be done in 30 minutes, so it is better to do it quickly by yourself and even if there are corrections, just follow the instructions of the person in charge.
Entrepreneur

Flixy “Medication IoT Calendar” Failure Review Part1

Although it is a bit late, I would like to look back on the flixy "Medication Calendar", which I developed as my first major project as a student, before the MELP web interview. The resolution of the target users was low, the user needs were not captured, and the means and purpose of winning the contest were reversed.
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