In this blog post, we’ll examine the effects of studying while listening to music, based on various arguments and studies regarding whether it actually aids learning. These days, if you visit a library, it’s not hard to spot people studying with earbuds in. You can also easily find people studying in cafes where music is playing. Does listening to music while studying really help you...
In this blog post, we’ll explore the background, core technology, and social significance of “ANGELSWING,” a disaster relief drone developed in response to the Nepal earthquake. At approximately 11:56 a.m. (local time) on April 25, 2015, a massive magnitude 7.8 earthquake struck Nepal. The quake caused extensive loss of life and property damage, and the devastation was further exacerbated...
In this blog post, we’ll take a simple look at the principles behind finding the shortest-time route on the subway using a network model and how the “Dijkstra’s algorithm” works. Seoul’s subway system, which began with the opening of Line 1 on August 15, 1974, has evolved into a large-scale urban rail network connecting the entire metropolitan area through continuous route expansion and...
In this blog post, we’ll examine the impact that portal sites—with a focus on Naver—have on the web ecosystem and explore their characteristics and limitations. The internet is often referred to as an ocean of information. While there are billions of web pages on the internet, users actually need only a tiny fraction of them. Search engines emerged to help users find this information...
In this blog post, I will revise and edit a previous article—which critically examined the structure and problems of South Korea’s portal services, with a focus on Naver—to bring it up to date. Naver, which once held an overwhelming share of South Korea’s search market, has long been at the center of the country’s internet ecosystem. In the past, using the internet in South Korea was...
In this blog post, we’ll take an easy-to-understand look at the principle behind how refrigerators produce cold air and the operation of the vapor-compression refrigeration cycle. How Does a Refrigerator Produce Cold Air? When sweltering summer days with not a breath of wind continue, people look for various ways to cool off. Taking cold water out of the refrigerator to drink, or enjoying...
In this blog post, we’ll explore the principles, procedures, limitations, and significance of the cryonics project. The Concept and Purpose of the Cryonics Project From Qin Shi Huang of China’s Qin Dynasty to the pharaohs of ancient Egypt, what do these historical figures have in common? They possessed wealth, fame, and even the supreme power of mighty nations, yet there was one thing they...
In this blog post, we will examine the importance of history education in South Korea amid a rapidly changing society and explore why a substantive history education is necessary. Thanks to advances in transportation, goods from countries around the world are now easily imported into South Korea. Furthermore, with the advancement of IT technology, we now live in an era where we can access...
In this blog post, we’ll explore the principles and applications of Dijkstra’s algorithm—the route-finding algorithm behind navigation systems. Chul-soo, who had just enrolled at Seoul National University, was on his way to the gymnasium for the orientation ceremony. However, he was so excited that he got on the wrong bus and ended up getting off deep within the campus. Fortunately, Chul...
In this blog post, we’ll explore the role GPS plays in our daily lives by examining its principles and various applications. Bus Information Systems and GPS Student Cheon Jae-yong takes the bus to school every morning. Until last week, he often found himself waiting at the bus stop for buses with unusually long intervals, idly staring at the cars passing by on the road. However, since...