• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
• /
• 1998.09a
• /
• pp.45-50
• /
• 1998

우리나라 인천항의 적체현상은 그 한계를 초과한 상태여서 체선율이 약 40%에 이르고 있다. 아울러, 수도권 대량화물의 대부분이 인천항을 경유하여 내륙수송방법을 통해 운송되므로 수도권의 심각한 교통체증을 가중시키며, 물류가격경쟁력의 저하현상을 초래하고 있다. 따라서, 운하를 건설하여 연안해송, 내륙수운 등의 수송수단을 통해 대량화물 운송을 원활히 하여 내륙교통량을 완화시키고 수송비를 절감시키는 방법도 이상과 같은 문제점해결의 대안이 될 수 있을 것이다. (중략)

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.18 no.36
• /
• pp.1-11
• /
• 1995

Manual lifting, as a part of manual materials handling activities, is recognized by authorities in the fields of occupational health and safety as a major hazards to industrial workers. In order to minimize the injuries caused by manual material handling activities as well as maximize job productivity, it is important to determine the maximum weights. This paper presents the optimal combination of membership functions according to the high lifting frequency and determines the safe maximum acceptable weights in manual lifting activities through the actual experiment.

• Proceedings of the KIEE Conference
• /
• 1983.07a
• /
• pp.79-82
• /
• 1983

상변환에 의한 농형유도전동기의 1/3, 2/3 속도제어 방법에 대하여 연구하였고, 종래의 국수변환 방법과 비교하였다. 1마력, 36슬롯을 모델로 하여 1800, 1200, 600rpm을 얻어 내었으며, 국수변환 방법에 비하여 고정자의 크기, 슬롯수, 동량을 줄일 수 있는 장점을 가지고 있었다.

• Korean Journal of Heritage: History & Science
• /
• v.41 no.1
• /
• pp.35-55
• /
• 2008

This paper is written to results of excavated ChungJu ChangDong site located in ChungJu and the article Keumcheonchang in Joseonwangjosilrok. The structure rerics of compositing cornerstone-distance 420cm has been showing to Keumcheonchang of legend in region people. The solution to problems is that the enforcement of the river-shipping service linking Han River and NakDong River. King Taejong commanded the new tax-warehouse of 200 Kan to built at Keumcheon in ChungJu and named Keumcheonchang for the receipt of innner region and KyengSang Province. King Sejo established the foundation of the government owned tax-grain transportation systerm for the strong centralization by the sovereign right. This logistic system is gone the middle and the latter of Joseon Dynasty. Joseon Dynasty is absolutely dependent the national finance for government operation on the tax-grain from HaSamDo(ChungCheong JeonLa KyengSang) region. JoUn(tax-grain transportation by shipping) is the best logistic system in Korea surrounding sea. Joseon Dynasty has refomed the logistics base on GoRyeo's system that the Tax-grain transportation system by shipping. There is the tax-warehouses reducing from 13 numbers to 9 numbers and making up for the weak points in the matter of the Japanese Pirate and the ship wreck in transporting in the sea. The ship wreck in the sea specially make the matters of the reducing tax and political issues. We know that Keumcheonchang is operated ChuaSuCham(the government agency for taxgrain transportation by shipping at a warehouse) from King Taejong 11(1,411)year to King Sejo 11 (1,465)year. There is the result of enforcement the river-shipping service system for social stabilization and forward their new ideal in the first half Joseon Dynasty.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2009.05a
• /
• pp.890-894
• /
• 2009

수제는 본래 제방의 보호나 주운의 수심확보를 등을 목적으로 제방과 수직에 가까운 각도로 설치되는 하천구조물이며, 수제의 형태에는 월류수제와 비월류수제 등 두 종류가 있다. 과거 하천의 주운으로 이용되었던 시절에는 대부분의 하천에서 수제를 볼 수 있었지만 하천의 수운교통의 쇠퇴, 제방축조기술의 발달에 따라 본래의 역할을 유지하지 못하여 최근에는 수제공법이 활용되지 않고 있는 실정이다. 최근에는 하천의 생태서식환경을 개선시킴과 동시에 주운용 수심을 확보하기 위하여 수제 설치가 주요한 공법으로 널리 행해지게 되었지만, 아직도 수제 설치에 있어서 하천의 기하학적 구조와 흐름특성을 제대로 반영하지 못함으로써 시행착오가 많이 발생하고 있다. 따라서 본 연구에서는 가상하도에서 2차원 수리모델인 RMA2를 이용하여 월류형 수제 주변의 흐름특성을 검토하였다.

• The Research Journal of the Costume Culture
• /
• v.5 no.1
• /
• pp.43-56
• /
• 1997

This thesis is a study on the properties of new religious ritual dress in Korea to help understand new religions more completely. A new religion means 'Newly born religions'and it is an opposite conception of the existing religion. The new religions in Korea have been established, changed and become extinct beginning with 'Dong-Hak'movement by Choi Jea Woo in 1860. Sometimes they've caused social problems with their number increasing after the rapid industrialization in 1970's. There are about 350 new religions and 2,000,000 christians in Korea now. Some of theme are pseudo religions wearing the mask of religion and also there are great new religions that will contribute to our spiritual history. The latter shows the thoughtful properties of the union of religion, postnatal creation, nation's independence, and human's centralization. There are properties of pluralism, nation's independence, symbolism, and thoughts in a new religious ritul dress.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.14 no.5
• /
• pp.1129-1136
• /
• 1994

A point heavy rainfall process is physically modeled. It uses meteorological variables at the ground level as its inputs. The components of the model are parameterized based on well established observations and the previous studies of cloud physics. Particular emphasis is placed on the efficiency of accretion. So we adopt the modified skew-symmetric model for hydrometeor size distribution function that is suitable for the heavy rain cloud. The dominant parameters included in the model are estimated by the optimization technique. The rainfall intensity is predicted by the model with the medium values of estimated parameters.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.30 no.2
• /
• pp.51-57
• /
• 2007

The expected busy period for the controllable M/G/1 queueing model operating under the triadic policy is derived by using the pseudo probability density function which is totally different from the actual probability density function. In order to justify the approach using the pseudo probability density function to derive the expected busy period for the triadic policy, well-known expected busy periods for the dyadic policies are derived from the obtained result as special cases.

• 한국ITS학회:학술대회논문집
• /
• 2005.11a
• /
• pp.83-88
• /
• 2005

A transportation problem in Korea is a serious issue that has to be solved urgently in the motor era of 15 million vehicles. Recently ITS has been introduced to improve efficiency of the current roads because an excessive budget and a long term construction are needed to build new roads. Therefore the government enacted the law as of ITS and the in architecture. However, these ITS information services were oriented to mainly vehicles and drivers, not public entities such as bus driver, passengers and so on. Nowadays lots of local autonomous city introduced a public transportation information system (PTIS), and providing useful information for the public. For this PTIS, important design issues are to be focused on detecting and tracking technology of moving bus, and a wireless communication link to transmit the location information. This paper presents design models using several wireless communication methods, and an implementation case using a Wireless packet Data communication Network (WDN) to transmit bus location information at Seoul, Korea.

• Journal of Institute of Control, Robotics and Systems
• /
• v.9 no.7
• /
• pp.489-497
• /
• 2003

A water management system is developed to reduce the unit cost of production in wide-area waterworks. Improving productivity in waterworks is to save power rate. We suggest a method to schedule the supply of water according to the time-varying power rate and pump control scheme. Water pipeline analysis package (SynerGEE Water) is utilized to obtain optimal pump control solution adaptation to water demand. Our evaluation results show that developed scheme is more efficient than the conventional.