• Korean Journal of Childcare and Education
• /
• v.9 no.3
• /
• pp.147-169
• /
• 2013

The study aims to reveal the factors that impact the decisions made by child care directors in the process of managing their day care centers. The seven participants I surveyed are directors in child care centers located in Seoul and Kyung Ki-Do. Through in-depth interviews and case-by-case studies, I uncovered that there are both external and internal factors that influence a director decisions. The external factors are following the standards set by the law, accommodating the demands set by parents, collaboration with the teachers, accepting the advice of friends and family, and creating realistic conditions. The internal factors are each director's own management philosophy, religious beliefs, and personal experience. This study aims to create policies for establishing and developing educational material so that child care directors will be able to provide an ideal environment for the supervision and education of children.

• Proceedings of the CALSEC Conference
• /
• 1999.07a
• /
• pp.277-299
• /
• 1999

Since Chrysler Motor Co. had experienced the digital development system in the beginning of 1990's, most of leading automobile companies are trying to apply a digital information system for their own business process reengineering based upon concurrent engineering system from product planning phase. This is called as virtual DMU(Digital Mock-Up) system instead of the traditional PMU(Physical Mock-Up) system. By using the virtual prototype, all of the design requirements and system specifications can be checked, changed and optimized more quickly and more efficiently. This paper consists of five chapters for the DMU information system. In the 1$^{st}$ chapter, the principle of digital design system is suggested by using four basic modules such as product design module, process design module, manufacturing system design module and central control module. The basic scheme of DMU is introduced with the benefits of application in the chapter 2. In the chapter 3, a digital design process of new car development is explained with the detailed DMU design and design review processes. In the chapter 4, the practical DMU manufacturing techniques and applications are introduced as CAD/CAM analyses, DPA(Digital Pre-Assembly)reviews for development, production, operation and maintenance phases, digital tolerance analyses and digital factory analyses for assembling line simulation, automated robot welding processes, production jig ＆ fixtures and painting process simulation. Finally, the activities of digital design support; CAS-styling, CAE-engineering and CAT-testing are summarized for design optimization in the chapter 5. As today's automobile manufactures and related business organizations are struggling to compete in the global marketplace, they are concentrating on efficient use of DMU information system to reduce the new car development cost, to have shorten the delivery schedule and to improve product design quality. To meet the demand of those automobile industries on digital information systems, the CALS(Computer aided Acquisition and Logistics Support) and EC(Electronic Commerce)initiative has been focused as a dominant philosophy in defense ＆ commercial industries, specially automobile industries.s.

• Journal of the Korean Vacuum Society
• /
• v.19 no.6
• /
• pp.397-407
• /
• 2010

For sustainable and responsible development of nanomaterials technology, the establishment of ethical system for sound social acceptance of the technology as well as the development of the technology itself is necessary. In this paper, global efforts to identify and resolve the ethical issues regarding nanotechnology is reviewed, in particular the environmental, health and safety issues in nanomaterials, and the tools such as communication and engagement of stakeholders, regulations, certifications and workplace guidelines are scrutinized. Finally the policy recommendations for the establishment of ethical systems for safe usage of nanomaterials.

• Publications of The Korean Astronomical Society
• /
• v.35 no.3
• /
• pp.43-57
• /
• 2020

Hong, Dae-Yong manufactured the Tongcheon-ui (Pan-celestial Armillary Sphere) with cooperating clock researcher Na, Kyeong-Jeok, and its craftsman An, Cheo-In, in Naju of Jeolla Province in 1760 ~ 1762. Tongcheon-ui is a kind of astronomical clock with an armillary sphere which is rotated by the force generated by a lantern clock's weight. In our study, we examine the lantern clock model of Tongcheon-ui through its description of the articles written by Hong himself. As his description, however, did not explain the detail of the mechanical process of the lantern clock, we investigate the remains of lantern clocks in the possession of Korea University Museum and Seoul National University Museum. Comparing with the clocks of these museums, we designed the lantern clock model of Tongcheon-ui which measures 115 mm (L) × 115 mm (W) × 307 mm (H). This model has used the structure of the striking train imitated from the Korea University Museum artifact and is also regulated by a foliot escapement which is connected to a going train for timekeeping. The orientation of the rotation of the going train and the striking train of our model makes a difference with the remains of both university museums. That is, on the rotation axis of the first gear set of Tongcheon-ui's lantern clock, the going and the striking trains take on a counterclockwise and clockwise direction, respectively. The weight of 6.4 kg makes a force driving these two trains to stick to the pulley on the twine pulling across two spike gears corresponding to the going train and the striking train. This weight below the pulley may travel down about 560 mm per day. We conclude that the mechanical system of Tongcheon-ui's lantern clock is slightly different from the Japanese style.

• The Journal of the Korea Contents Association
• /
• v.21 no.3
• /
• pp.80-87
• /
• 2021

Aging is rapidly progressing around the world. This study explore and propose a qualitative user research method to specifically understand the needs and desires of the elderly based on a human-centered design philosophy for design targeting the increasing elderly. In particular, the purpose of this study is to propose a user research method that can be easily used when designing products used by the elderly in the actual design site. For this purpose, this study examined the use and implications of using shadowing, interviews, and direct experience while actually proceeding with the walking stick design. The shadowing was organized through the AEIOU frame, and the interview was conducted by adding a significance category to reflect the recent trend of the silver generation. For the direct experience, design implications were derived by setting up four user behavior scenarios, each indoors and outdoors, and experiencing them directly by designers. This study is expected to be an important user research guideline in the current situation where the demand for design for the elderly is diversifying and increasing.

• Convergence Security Journal
• /
• v.22 no.3
• /
• pp.3-11
• /
• 2022

With increasingly sophisticated cyber threats, accelerating cloud adoption, and the adoption of remote and hybrid work environments due to the COVID-19 pandemic, the traditional security model, in which many businesses implicitly trust everything within their boundaries, is changing without boundaries, allowing data and users The concept of zero trust is getting more and more attention as the fact that it is not suitable for today's increasingly decentralized environment has been highlighted. Zero Trust is a cyber security model on the premise that 'no one trusts'. In principle, there is no safe area or user in the entire system, and internal users are also verified. is a way As telecommuting becomes commonplace due to the COVID-19 pandemic, and existing cyber security measures are facing limitations, Zero Trust technology is drawing more attention. Accordingly, it is expected that the Korean government will also check the status of acceptability of the domestic public and private sectors and tasks that need improvement when introducing Zero Trust with reference to the NIST standard. In this paper, the basic principles, philosophy, and considerations of Zero Trust and Zero Trust are explained, and practical basic measures to strengthen security by combining Zero Trust technology are presented.

• Publications of The Korean Astronomical Society
• /
• v.37 no.3
• /
• pp.59-79
• /
• 2022

We investigated the records of astronomical phenomena in the Hyeonjong-Donggung-Ilgi written by the educational office for a crown prince, Sigang-won, during the time of a crown prince of the king Hyeonjong (i.e., from 1649 to 1659). Of the total of 3,625 days, 3,044 astronomical accounts were compiled from astronomical records of 2,003 days. We classified these astronomical accounts into 16 items, grouped into five categories, and statistically analyzed each group. In our analysis, the accounts for atmos-pheric optical phenomena equates to 57.9% of the total, and for celestial phenomena visible during the daytime the percentage is 17.3%. The records related to the approach between two objects such as planets, moon, and stars account for 3.3%, and solar or lunar eclipses take up 0.6%. The ratio of accounts regarding meteor, comet, and fire light (火光) stand at 13.8%, 0.30%, and 6.8%, respectively. Sunny days account for 71.1% of all days per year during this period. We determined that the distribution of the fire light by month is similar to that of the solar halo. We also found that the astronomical records from the Annals of the Joseon Dynasty correspond to only 30% of those of the Hyeonjong-Donggung-Ilgi for the same period. In particular, the phenomena of celestial objects occurring outside the atmosphere are transmitted to the Annals of the Joseon Dynasty in a higher proportion than the phenomena inside the air. It is therefore necessary to use a historical diary like a Donggung-Ilgi to interpret the phenomena in the air such as atmospheric optical events, meteor, and fire light.

• Journal of The Korean Astronomical Society
• /
• v.56 no.1
• /
• pp.75-89
• /
• 2023

We investigate the astronomical phenomenon records of Sukjong's Chunbang-Ilgi made by Sigangwon (Royal Educational Office of the Crown Prince) at which King Sukjong was the crown prince (i.e., 1667 January 24-1674 September 22). From the daily records of 2,799 days, we extract the astronomical records of 1,443 days and classify them into 14 categories. Then, we group the records of each category into five phenomena (Atmosphere, Eclipse, Daylight Appearance, Apparition, and Appulse) and compare them with the results of modern astronomical computations wherever possible. Except for Atmosphere group comprising records of meteorological events, such as solar halo, lunar halo, and unusual clouds, the significant findings in every other group are as follows: In Eclipse group, the solar eclipse that occurred on 1673 August 12 was unobservable in Korea, which is in contrast to the record of Joseonwangjo-Sillok (Annals of the Joseon Dynasty), which states that the sun was in eclipse around sunset time, as observed at Nam mountain. From the lunar eclipse records, we verify that the Joseon court did not change the date of the events observed after midnight. In Daylight Appearance group, we confirm that this phenomenon was observed during the daytime and not during twilight. We further suggest that if observation conditions are met, a celestial body brighter than -2.3 mag could be seen during the daytime with the naked-eye. In Apparition group, we find the possibilities that the Orionid meteor shower had influence on the meteor records and the seasonality on the aurora records. We also find that the Korean records in which the coma of comet C/1668 E1 was located below the horizon were overlooked in previous studies. Finally, we find that the records of Appulse group generally agree with the results of modern calculations. The records of Beom (trespass in literal) and Sik (eating in literal) events show average angular separations of 1.2° and 1.0°, respectively. In conclusion, we believe this work helps study the astronomical records of other logs of Sigangwon, such as Sukjong's Chunbang-Ilgi.

• The Journal of Korean Philosophical History
• /
• no.59
• /
• pp.261-286
• /
• 2018

It is possible to communicate with objects in various styles, but especially the poem[詩], the ode[賦], the inscription[銘] are remarkable. The word is not the mouth, but the mind and the soul. Therefore, if a person is in a relationship with an object that defines the person, what conversation with the object is the person's inner. So if you know what a person has been with things, you can imagine his outer surface, and you can get inner if you know what you talked about. Seo Kyung-duk who lived a poverty life, but can not live without things, so his things are not a thing, Seo Kyung-duk also recorded especially about the dojookjang[bamboo cane], the buchae[fan], and the $k{\breve{o}}mungo$[Korean lute] Seo Kyung-duk with the buchae, Seo Kyung-duk with the dojookjang, and Seo Kyung-duk with the $k{\breve{o}}mungo$. These are the pictures we can imagine. And I can draw Seo Kyung-duk to talk with those things. Seo Kyung-duk, who is reflected in the dojookjang, shows the reality of participating in the rescue of the people's hardships and the stubborn world. Seo Kyung-duk, who is reflected in the buchae, is a philosopher who explores the origin of existence with the appearance of realistic preachers who have to wash away the difficulties of the people. Seo Kyung-duk, who is reflected in the $k{\breve{o}}mungo$, is a philosopher who grasps Ki(氣) the phenomenon and the source, the immaterial and the material, the type and the intangible. Both the strings and non-strings are $k{\breve{o}}mungos$. The $k{\breve{o}}mungo$ is strong in ideology symbolizing the Confucianism ideological ideals, and Seok Kyung-duk is also in the extension line. Seo Gyeong-deok, who has seen through the dojookjang, the buchae, and the $k{\breve{o}}mungo$ has a realistic sense of realizing that he should worry about the pain of the world and fulfill a good world. He is a philosopher who pierces the root of existence and can be governed by the logic of Ki(氣).

• Journal of The Korean Association For Science Education
• /
• v.38 no.5
• /
• pp.705-720
• /
• 2018

The purpose of this study is to shed light on the meaning and value of interest (in Korean 'Jae-mi') in science education through literature analysis. Literature analyses were conducted on literature related to interest in various fields such as Korean language, psychology, philosophy, and education. Specifically, this study discussed the meaning of interest, the characteristics of the context of experiencing interest, the educational value of interest in science education, and the direction of science education to realize the value of interest. First, it was found that interest is an experience of emotional activation that can be felt through interaction with a specific object, and it is an emotional experience caused by the complex combination of various psychological factors, which is oriented sense, relationship, self, and object. Second, to understand the context of experience of interest, we conducted a topic modeling analysis with 1173 research articles related to interest. As a result of the analysis, it was confirmed that the context of interest is closely related with playfulness. And we addressed that this kind of playfulness is also found in science. Third, the educational values of interest in science education were discussed. In science education, fun is not only an instrumental value to induce science learning behavior, it is also one of the universal experiences that learners feel lively in science teaching-learning, and driving force of individual students' emotional development related to science. The students' active attitude to feel interest lead to creative thinking and action. Finally, we argued that the interest that should be aimed in science education should be active interest and experienced at trial and error, not passive interest induced by external stimuli. And science education culture should be encouraged to respect those who enjoy science. In particular, this study discussed the importance of each student's unique interest experience based on the philosophy of philosopher Deleuze (1976).