• Korean Journal of Optics and Photonics
• /
• v.27 no.2
• /
• pp.73-80
• /
• 2016

In this paper, we report the results of a study on the design and fabrication of a light-guiding plate (LGP) using a hybrid light-emitting diode (LED) and sunlight source that can be applied to a photobioreactor. LGP patterns for the LED source were designed and engraved on an LGP, together with previously reported patterns for a sunlight source. A control system for the hybrid LGP was designed to maintain the output photon flux density (PFD) from the LGP at a constant value. When the target value of the output PFD was set to $70{\mu}E/(m^2{\cdot}s)$, the error range of the output PFD was found to be within ${\pm}2%$.

• Journal of the Korean Society of Costume
• /
• v.27
• /
• pp.27-40
• /
• 1996

1.It was recorded at "Dong Gook Tong Gam" of King "Jang Soo" that "Sim-Eui" in Korea was first introduced from China at the reign of King, "Moon Ja"(491,A.D), Go Goo Ryo. 2."Sim-Eui" was worn as a mourning dress during the period of "Go Ryo" and as a concanical robe of Confucian, a ceremonial dress at home and for the rules of etiquettes during Cho Sun Dunasty. 3.Several theories about the construction and the using services of "Sim-Eui" are obseved and summerized. 4.Mr. Kyu-soo Park gives a definition to "Sim-Eui" as a Fortune of Heaven & Earth, the Constellation of the Cosmic Dual Forces, the Revolution of the Four Seasons, a dignified mien & the Way of a Man of Virtue and Virtue of the golden Mean. 5.I observed the concrete measurements of the each parts of "Sim-Eui" by the construction method of Kyu-Soo Park. 6.The Symbolic Meaning following the Idea of Mr. Chung, Hyun. describes well the line of thinking in our nation, and Idea of Loyalty & Filial Piety, a Man of Virtue and the Virtue of the Golden Mean. 7.As described above, I dare insist of the fact that the Construction Theory of "Sim-Eui" by Kyu-Soo Park during the letter period of Chosun Dynasty is full of our national manners and cus-toms with symbolizing meaning, construction's exquisiteness, clothes' materials and it's size most suitable to our people, to the exclusion of the defects in "Sim-Eui" of China and Japan.

• Journal of Integrative Natural Science
• /
• v.15 no.2
• /
• pp.89-97
• /
• 2022

This paper presents the comprehensive feasibility study of solar mini-grid project located in Bajhang District, Sudur Paschim Province, Nepal. The study has been conducted with the aim of developing a suitable size solar mini-grid system to meet electricity demand of proposed settlements of the village people. The study forecasts that the estimated average daily peak power consumption of load is about 20kW and average daily energy demand of load is about 100-150kWh/day in the base year 2022. The shared ratio of productive end uses is about 25% of the total power consumption and about 27% of the total energy demand, which will be used for small business/income generation activities and required 45kWp size solar power generation mini-grid system. The estimated project cost for the proposed 45kW solar mini-grid system technology, including 3 years of operation & maintenance, as well as power distribution network up to end user's premises is about 0.24 million USD. It is concluded that 45kWp photovoltaic mini-grid is feasible for the location.

• The Journal of Engineering Geology
• /
• v.27 no.1
• /
• pp.51-58
• /
• 2017

The purpose of this study was to quantitatively evaluate the state of rocks in load steps by using the low-frequency ultrasonic flaw detection method. The initial Vp-velocities measured with a CND tester were in the order of Z-axis < X-axis < Y-axis, with 1687.5 m/s along the X-axis, 1690.7 m/s along the Y-axis, 1548.3 m/s along the Z-axis, and an average of 1642.2 m/s. The overall average of the Q vlaues, measured with a Silver Schmidt hammer, was 62.6, which corresponds to a uniaxial compressive strength of ~105 MPa. The Vp-velocity, measured with a low-frequency ultrasonic flaw detector at load steps of 50%, 60%, 70%, and 80%, typically decreases in the order of X-axis < Y-axis < Z-axis with increasing load steps. This oder contrasts with that of the initial Vp-velocities. As the load step increases the factors that reduce the Vp-velocity in the X-axis direction are more influential than those in the Y-axis or Z-axis directions. This indicates that the initial state of rocks can vary and is dependent on the stress state.

• Journal of the Korean Society of Costume
• /
• v.54 no.8
• /
• pp.27-34
• /
• 2004

Jang Heung Lim's is a nephew's wife of Kim Duk Ryung, who had been served as a general of Chosun dynasty. When her Tomb was removed to another places there were excavated some articles such as six Korean traditional costume, Korean socks, Korean shoes (Mituri) and so on. The unearthed costume was designated as a monentous folk materials, No.112, and placed on Gwangju folklore museum. At that time, the mending work in the lost part of costume was not implemented. Only an act of textile conservation was worked. In the article, we go through the mending principles and mending methods in damaged parts of costume. First, the mending principles on the damaged costume are as follows : (1) minimize the repaired parts, (2) mend the only damaged parts, (3) use the same color and cloth as that of original ones, (4) use the appropriated stitching method (5) act the fixed framework in case of missing a outer cloth. Second, the mending method related to the damaged part are as follows : (1) the repairing method in the bodice and sleeve part of costume, (2) the repairing method in the hem of steeve, (3) the repairing method in the collar of costume, (4) the repairing method in the armpit part of costume, (5) the repairing method in the connecting parts between one and another width of Korean traditional long skirt. With this article, we wish that the repairing method in the cultural costume will be developed scientifically and specified efficiently.

• Journal of the East Asian Society of Dietary Life
• /
• v.1 no.1
• /
• pp.31-42
• /
• 1991

Since the year 1795(in the 19th year of King Jungjo), the form of Banquet Record was established. In the year 1827(in the 27th year of King Sunjo), the formality of Banquet was made at Ja-kyung Palace for the first time. Thereafter it was utilized by all banquets, So it was called the“model of courtesy”. The compostion of Jinchan Uigue of the year 1887(in the 24th year of King Gojong) was identified as follows; Banquet Record was composed of 4 Volumes. In Preface, there were Data choice(Taekil), Personal rank his name(Zwamok), Pictures of ceremonies(Dosik). In 1st Volume, there were King's order(Jungyo), Answer of King's question(Yeonseol), Musuic Record(Akjang), Compliment for King(Chisa), Poem for royal family(Junmun), Procedure of ceremony(Uiju), Works of theauthorities concerned(Samok), Resource indices(Gyemok), Letters from chief of the authorities concerned (Gyeas), Official letters(Imun), Letters to headquarters from local officers(Negwan). In 2nd Volume, there were Consult for budget(Pummok), Letters from to local officers from head quarters(Gamyul), Banquet menu(Chanpum), Utensil item(Gijong). In 3rd Volume there were repairment(Suri), Arrangement(Besul), Umbrella and flag for ceremonies (Ui Jang), Guard(Uiwui), List of quests(Neyebin), Ministers(Munanjesin), Musician and dancer's name and costume (Gongryung), Musical instrument(Akgipungmul), Rewards(Sangjum), Expenditure of banquet(Jaeyoung).

• Journal of the korean academy of Pediatric Dentistry
• /
• v.36 no.3
• /
• pp.367-376
• /
• 2009

In this clinical research, the fluoride tape(SCMC-T-5) using fluoride(NaF) was developed and manufactured and the treatment effect of the fluoride tape in dentin hypersensitivity patients was evaluated and compared with the effect of existing fluoride varnish($CavityShield^{TM}$). Twenty two healthy adult patients(88 teeth) having dentin hypersensitivity participated in this clinical research and they were divided into two groups. The fluoride product was applied according to the manufacturer's instruction and the level of pain in the tooth after giving irritation using compressed air and ice stick was measured just after the application, after 3 days, after a week and after 4 weeks each using visual analog scale(VAS). In the experimental group, compared with the early VAS scores, all other VAS scores showed the significant decreases statistically. In the control group, all VAS scores except the VAS score of 34.091(air) measured 3 days after(using the irritation examination by the compressed air) showed the significant decreases statistically when compared with the early VAS scores. The fluoride tape and fluoride varnish used in this clinical research were able to treat the dentin hypersensitivity effectively.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.9
• /
• pp.4149-4155
• /
• 2013

High speed machining for higher cutting speed and feedrate lead to a increase of surface quality and material removal rate. This paper presents a study of the influence of cutting conditions on the vibration characteristics obtained by machining with face milling cutter for high speed machining. In this paper, Taguchi experimental design method which is based on orthogonal array table was applied to study vibration characteristics with high speed face milling cutter. The experimental conditions used orthogonal array of $L_{27}(3^{13})$. In this work, design and analysis of experiments is conducted to study the effects of these parameters on the vibration by using the S/N ratio, analysis of variance. Four cutting parameters namely, feed rate, champer length, cutting speed, and depth of cut were optimized with consideration of vibration characteristics.

• Journal of the Korean Dietetic Association
• /
• v.10 no.2
• /
• pp.159-173
• /
• 2004

The desire for the healthy life is increasing as a result of rapidly changing social and economic environment in Korea. Because of the need, informations on health, food and nutrition are being introduced through the mass media. The object of this study is to investigate and analyze the quantity and quality of informations about health, food and nutrition in women's magazines. Six representative domestic monthly magazines(Lady Kyunghyang, Women Donga, Women Chosun, Women JoongAng, Women sense, Jubu Senghwal) were selected for this study. The results of monitoring from June 2002 to September 2002 for the women's magazines were summarized as follows; 1. The percentage of the articles on health, food and nutrition by total area of the women's magazines was 23.1%. There were total 595 articles on health, food and nutrition. Among these, 400 articles(67.2%) were about food and nutrition. 2. The percentage of the advertisements on health, food and nutrition was 35.3% by total area of the woman's magazines. There were 2,353 advertisements on health, food and nutrition. Among these, 1,574(66.9%) advertisements were about food and nutrition. The most frequently advertised advertisements on food and nutrition were about processed foods (527 cases, 33.5%). The second most frequently advertised advertisements were about diet (374 cases, 23.8%). The third one was healthy foods (345 cases, 21.9%). 3. The contents of 215(53.8%) articles (the total number of articles was 400) was suitable. The contents of 89 advertisements(22.3%) did not have accurate informations on health, food and nutrition. For the advertisements in women's magazines (the number of total articles was 2,203), the percentage of the advertisements which was not able to capture the feature of the advertisements was 27.9%, insufficiency of reliable sources was to 21.9%, and exaggeration of the contents in the ads was 16.0%. Articles and advertisements should be backed by scientific research or reliable sources and also the opinions of people with expertise in order to report accurate informations to the general public. In order to achieve these results, there should be continuing monitoring activity for the women's magazines.