• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2000년도 제 25회 정기총회 및 추계학술발표회
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• pp.111-128
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• 2000

The hull form of $\boxDr$Tamna Sullyokto$\boxUl$ ancient envoy ship for shipping and foreign trade in Choson period were transformed and developed in accordance with their voyage and regional routes. It is not easy to presume the hull form and the structural form of Envoy ship of choson period. This paper aims to present material concerning the ancient ship of $\boxDr$Tamna Sullyokto$\boxUl$ by analysing ancient voyage sea route and war ship history of Chosun period of the $\boxDr$Tamna Sullyokto$\boxUl$ ancient ship.

• 암석학회지
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• 제25권4호
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• pp.335-348
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• 2016

제주도의 전 지역에 걸쳐 넓게 분포하고 있는 하성 퇴적층인 탐라층은 역암, 사암, 이암 등으로 구성되어 있다. 대부분의 탐라층 이암 내에 다양한 크기의 석영이 다량 함유하는 것이 확인되었다. XRD 분석의 결과, 탐라층에는 석영, 사장석, 칼륨장석, 운모, 자철석, 적철석, 감람석, 휘석, 깁사이트, 방해석, 아날심, 그리고 점토광물로서 일라이트, 카올린나이트, 버미큘라이트, 스멕타이트, 녹니석, $10{\AA}$-할로이사이트 등의 다양한 광물들이 산출되었다. 석영이 많은 곳일수록 카올린나이트, 버미큘라이트, 녹니석의 함량이 많아지는 경향이 나타났다. 이상의 결과들로 보아 탐라층의 근원암은 제주도의 화산암에서 기원된 것만이 아니며, 석영을 다량 함유한 기반암이 포함된 것으로 사료된다. 따라서 탐라층은 이전에 존재했던 기반암과 함께 제주도 화산암류의 물질들이 첨가되어 퇴적된 후, 속성작용, 열수작용, 풍화작용 등의 변질작용을 받아 형성된 것으로 생각된다.

• 한국환경과학회지
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• 제15권5호
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• pp.431-438
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• 2006

The strength, water permeability, and photo-degradation efficiency of NOx of porous concrete with a new concept were studied in this paper. The porous concrete was comprised of coarse aggregate of maximum size 40 mm, cement, silica fume, water and air-entraining(AE) water reducing agent. The strength of porous concrete was strongly related to its matrix proportion and compaction energy. An experimental test was carried out to study the parameters of cement proportions and silica fume content for pavement applications of porous concrete which were paving a footpath, a bikeway, a parking lot, and a driveway. The regressed equations of relation-ships between compressive strength and flexural strength, and coefficient permeability and void ratios were indicated as y=7.69x+71.74 and $y=0.42e^{0.28x}$. A method of making an air purification-functioning road, which was spraying a mixture of a photocatalyst, cement, and water onto the surface of the road, was suggested.

• 복식
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• 제57권3호
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• pp.108-123
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• 2007

The purpose of this study is to investigate costumes worn by high government officials which are illustrated in Tamna Sullyeokdo at the era of King Sukjong of the Joseon Dynasty. The findings of the study are as fellows: 1. Tamna Sullyeokdo showed that Moksa wore an simplified version of Jobok at a congratulatory ceremony. They wore Sibok at such events as examinations, Yeonhyang or Jinsang. Particularly at Yeonhyang, Samo was decorated with some red flowers. The officials wore Yungbok when they were participated in military training, hunting or arrow shooting competitions. They wore Pyeonbok when they go on a trip 2. Pangwan wore Sibok when they took an examination. They wore Yungbok during military training while they wore Pyeonbok during Tamseung. 3. Hyeongam wore Sangbok at a congratulatory ceremony. When they take part in military training, examinations, Yeonhyang or Jinsang, those officials wore Sibok. They also wore Yungbok during military training, Yeonhyang or Jinsang. They wore Jurip decorated with some red flowers during Yeonhyang. And they wore Pyeonbok when they were inspecting military training of Seongjeonggun. 4. Gungwan wore Yungbok at every events. They wore Jurip decorated with Hosu and Jeonrip on their head, and wore Cheolrik during military drills, arrow shooting competitions, examinations, Jinsang, or Tamseung. They wore Jeonip decored with red flowers during Yeonhyang. During regular military trainings, those officials wore Jeonrip decorated with Sangmo on their head and wore Cheolrik and Jeonbok. During Tamseung, they wore Jeonrip decorated with Sangmo on their head and wore Jeonbok with Jungchimak or a set of Jeogori and Baji.

• 대한가정학회지
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• 제47권2호
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• pp.27-37
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• 2009

This study investigated the leadership skills of directors in addition to empowerment and Job satisfaction of teachers in Child Care Centers. The participants were 446 teachers who worked in early childhood educational institutes across Jeju province. The results were as following.: Firstly, transformational leadership significantly affected empowerment. However, individual consideration and transactional leadership from transformational leadership did not significantly affect empowerment. Secondly, individual consideration and intellectual stimulation from transformational leadership had a significant effect on job satisfaction. Also, reward for performance and exceptional management from transactional leadership had a significant effect on the job itself, the relationship, the working environment, and salary package among sub-variables in job satisfaction.

• 수산해양교육연구
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• 제20권3호
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• pp.390-399
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• 2008

The purpose of this study is to clarify variables dichotomizing adolescents into online game addiction-latency group and non-addiction group. Based on ecologic theory, individual system(self-esteem, self-control, depression, stress-coping strategy), family system(parental support), and social system(teachers' support and peer-group support) were suggest for variables affecting online game addiction of adolescents. 612 adolescents were tested for game addiction, self-esteem, self-control, depression, stress-coping strategy, and social supports from parents, teachers, and peer group. Independent t-tests showed between-group differences in self-esteem, self-control, depression, aggressive, and negative-avoiding stress-coping strategies, parental support, and peer-group support. Binary logistic regression analyses revealed that aggressive stress-coping strategy of social system and peer-group support of social system had significant influences on the division of the groups.

• 복식
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• 제57권6호
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• pp.172-183
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• 2007

The purpose of this study is to examine the dress and its ornaments of low-level officials shown in Tamna-Sullyeokdo, the paintings of the inspection tour of Jeju Island. The low-level officials Include low-level soldiers-sungjungun, gichigun, foot soldiers, cavalries, gunroe, ilsu, artillerymen, najang, and sawon-, musicians, servants, and kisaengs in government employ. 1. Different types of low-level soldiers tended to wear different kinds of clothes that is worn under an outer garment and to wear different coats and trousers depending on an outer garment. That is, sungjunggun, gichigun, foot soldiers, and cavalries were jeonbok over a jeogori and baji. On the other hand, gunroe, ilsu, artillerymen, and najang were houi or jakui over a jeogori and baji. However, Sawon simply were Jeonbok or armer or they wore Cheolik in formal occasions. 2. Musicians wore a jeonlib, a type of hat, decorated with an ear of barley and a red houi over a Jungchimak, a man's outer coat with large sleeves. Musicians wore colorful red clothes in order to add to the amusement during military trainings or banquets. 3. Servants in government employ had their hair in plaits and wore a jeonbok over a Jungchimak or baji and jeogori. However, when they dance during banquets, they were cheolik and jeonlib decored with/without an ear of barley or red flowers. 4. Gisaengs in government employ wore a gache on their head and wonsam, a woman's full dress during big occasions. They, on the other hand, wore a jeogoli and chima for regular occasions.

• 한국환경과학회지
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• 제16권8호
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• pp.929-939
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• 2007

Red mud is a waste generated by the aluminium industry, and its disposal is a major problem for this industry. Red mud has a reddish-brown color and superfine particle characteristics. So, it can be a promising pigment admixture for concrete industry. An experimental study was conducted to investigate the potential use of red mud in color concrete. The micro structures of red mud and iron oxide pigment such as porosity, pore size distribution, diameter of particle were analyzed with the aid of SEM, X-ray diffraction(XRD), and the infrared absorbance. Tests on physical properties of color concrete, such as strength, slump, early shrinkage crack patterns, and color characteristics were carried out and the results were reported in this paper.

• 한국환경과학회지
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• 제15권11호
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• pp.1045-1052
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• 2006

Stormwater pollution is a major problem in urban areas. Pollutants like heavy metals and harmful chemicals in the runoff can endanger soil and ground water, when they are not sufficiently removed doting infiltration. Strength and infiltration capacity of porous concrete are the major problems that must be considered if permeable pavement system are demanded to be used in a drive way application. In this study, a series of compacted porous concrete mixtures and the system of pavement ate tested for the physical characteristics like compressive strength, flexural strength, unit weight, porosity, water permeability, and the purification capacity of contaminated water. The test results obtained indicate that the strength and infiltration capacity of porous concrete are strongly related to its matrix proportion and compaction energy and providing adequate filter layers underneath pavement surface course is one of the most important design considerations of permeable pavement system for pollution retention purpose.

• 대한산업공학회지
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• 제26권1호
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• pp.48-53
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• 2000

This paper deals with the problem of determining the optimal ordering quantity under the condition of a free addition. It is assumed that the supplier permits a fixed free addition depending on the amount of the quantity purchased by the customer. Investigation of the properties of an optimal solution allows us to develop an algorithm whose validity is illustrated through an example problem.