• Title/Summary/Keyword: 공물(貢物)

Search Result 27, Processing Time 0.026 seconds

An Experimental Study for the Empirical Equation to Quantify the Subsidence of Riprap Scour Protection at Downstream of Vertical Drop Structures (연직낙차공 하류부 사석보호공 침하량 산정식에 관한 실험 연구)

  • Kim, Chang-Sung;Kang, Joon-Gu;Yeo, Hong-Koo;Yeo, Woon-Kwang
    • Journal of Korea Water Resources Association
    • /
    • v.43 no.5
    • /
    • pp.433-443
    • /
    • 2010
  • Drop structures that span the entire width of channels are installed to alleviate channel grades and have been constructed widely in Korean rivers. Aprons are normally installed and integrated with drop structures and bed protections are added on the downstream part of aprons to protect both drop structures and aprons. Scour occurring on aprons is reported to provide various habitats such as ripples and pools in natural rivers. This study focuses on the scour characteristics on an apron integrated with a drop structure and the subsidence of a riprap protection. The scour depth on the downstream part of the drop structure is found to increase with the increase of unit discharge; however, to decrease as the tail water depth gets deeper. Based on the experimental measurements, the subsidence of the riprap scour protection is calculated with respect to the thickness of riprap. Finally, the dimensionless empirical equation to quantify the subsidence of the riprap scour protection without filters at downstream of the vertical drop is suggested.

Geopung Copper Deposit in Ogcheon, Chungcheongbuk-do: Mineralogy, Fluid Inclusion and Stable Isotope Studies (거풍구리광상: 산출공물, 유체포유물 및 안정동위원소 연구)

  • Yoo, Bong-Chul;You, Byoung-Woon
    • Economic and Environmental Geology
    • /
    • v.44 no.3
    • /
    • pp.193-201
    • /
    • 2011
  • The Geopung Cu deposit consists of two subparallel quartz veins that till the NE-trending fissures in Triassic Cheongsan granite. The quartz veins occur mainly massive with partially cavity and breccia. They can be followed along strike for about 500 m and varies in thickness from 0.2 to 2.2 m. Based on the mineralogy and paragenesis of veins, mineralization of quartz veins can be divided into hypogene and supergene stages. Hypogene stage is associated with hydrothermal alteration minerals such as sericite, pyrite, quartz, chlorite, clay minerals and sulfides such as pyrite, arsenopyrite, pyrrhotite, marcasite, sphalerite, stannite, chalcopyrite and galena. Supergene stage is composed of geothite. Fluid inclusion data from quartz indicate that homogenization temperatures and salinity of hypogene stage range from 163 to $356^{\circ}C$ and from 0.2 to 7.2 wt.% eq. NaCl, respectively. They suggest that ore forming fluids were progressively cooled and diluted from mixing with meteoric water. Sulfur (${\delta}^{34}S$: 4.3~9.2‰) isotope composition indicates that ore sulfur was derived from mainly magmatic source although there is a partial derivation from the host rocks. The calculated oxygen (${\delta}^{18}O$: 0.9~4.0‰) and hydrogen (${\delta}D$: -86~-69‰) isotope compositions suggest that magmatic and meteoric ore fluids were equally important for the formation of the Geopung Cu deposit and then overlapped to some degree with another type of meteoric water during mineralization.

A Study on The Throne of Kings and Implementation of Daedongbeop (왕의 즉위와 대동법 시행에 관한 연구)

  • Choi, Hack-Sam
    • The Journal of the Convergence on Culture Technology
    • /
    • v.5 no.4
    • /
    • pp.147-155
    • /
    • 2019
  • The implementation of Daedongbeop of Gyeonggido after throne of Gwanghaegun, the Daedongbeop of Gangwondo afterthrone of Injo, and the Daedongbeop of Chongcheongdo and Chollado after throne of Hyojong were in expectation of new kings the greatest Governing Administrator who tried to improve the hard life of the people, It was possible because there was a great effort. However, after throne of these three kings, the enactment of the Daedongbeop is a major crisis. The difference of the crisis related to enforcement was that the enforcement of the Daedongbeop of the Gwanghaegun and the Injo was carried out immediately after the enforcement decision was made but soon it was put into a crisis of abolishment and the Chungcheongdo and Chollado provincial Daedongbeop encountered extreme opposition before the enforcement and it has been carried on continuously since the end of the abolition crisis. In this study, we examined the efforts of the Governing Administrator who succeeded in the enactment of the Daedongbeop for the peaceful life of the people, with the throne of these three kings and the expectation of the new king. In the case of at the time of Gwanghaegun, Hanbekgyeom, LeeWonik, and Hwangshin, Joeik and LeeWonik at the time of Injo, and Kimyuk at the time of Hyojong were common people who have tried to improve the troubles of the people. They did not focus only on the theoretical interpretation of Neo-Confucianism, but on the basis of the interpretation, they demonstrated the power of the Governing Administrator practicing the right politics for the people in reality. The result is policy formulation and enforcement for the implementation of the Daedongbeop.

Quantitative Comparison of Motion Artifacts in PET Images using Data-Based Gating (데이터 기반 게이팅을 이용한 PET 영상의 움직임 인공물의 정량적 비교)

  • Jin Young, Kim;Gye Hwan, Jin
    • Journal of the Korean Society of Radiology
    • /
    • v.17 no.1
    • /
    • pp.91-98
    • /
    • 2023
  • PET is used effectively for biochemical or pathological phenomena, disease diagnosis, prognosis determination after treatment, and treatment planning because it can quantify physiological indicators in the human body by imaging the distribution of various biochemical substances. However, since respiratory motion artifacts may occur due to the movement of the diaphragm due to breathing, we would like to evaluate the practical effect by using the a device-less data-driven gated (DDG) technique called MotionFree with the phase-based gating correction method called Q.static scan mode. In this study, images of changes in moving distance (0 cm, 1 cm, 2 cm, 3 cm) are acquired using a breathing-simulated moving phantom. The diameters of the six spheres in the phantom are 10 mm, 13 mm, 17 mm, 22 mm, 28 mm, and 37 mm, respectively. According to maximum standardized uptake value (SUVmax) measurements, when DDG was applied based on the moving distance, the average SUVmax of the correction effect by the moving distance was improved by 1.92, 2.48, 3.23 and 3.00, respectively. When DDG was applied based on the diameter of the phantom spheres, the average SUVmax of the correction effect by the moving distance was improved by 2.37, 2.02, 1.44, 1.20, 0.42 and 0.52 respectively.

Plant Species Utilization and Care Patterns Using Potted Plants in the Traditional Gardening (전통조경에서 분(盆)을 이용한 식물의 활용과 애호 행태)

  • Kim, Myung-Hee
    • Journal of the Korean Institute of Traditional Landscape Architecture
    • /
    • v.31 no.3
    • /
    • pp.61-74
    • /
    • 2013
  • This study examined and analyzed ancient writing and poetry regarding cases of appreciating plants by using pots in a garden of a palace or private houses by ancestors, and examined shape and planting method of plant species and potted plants, arrangement and preference of potted plants. As for the method of the study, description research method which examines and interprets poem and painting based on potted plants. The results of this study is summarized like the following. First, the plants which were favorably used for potted plants include 19 kinds such as Prunus mume, Pinus densiflora, Pinus pumila, Phyllostachys spp., Camellia japonica, Punica granatum, and Gardenia jasminoidesa, and as for herbs, 12 kinds such as Chrysanthemum monifolium and Nelumbo nusifera . Second, the species which were specially arranged into artificial shapes include Prunus mume and Pinus densiflora. The two plants made the shape of severe curves of stems such as Wangpi. Gyuban, and Bangan, and there are Pinus densiflora dwarfed potted plant whose roots are stretched on Prunus mume grafted into a strange stump and an oddly shaped stone. For the beauty of the dwarfed tree shape, pine cones are added to an old Pinus densiflora or Parthenocissus tricuspidata is planted to stems, and additional method of making moss on the soil, which is called 'Jongbunchuigyeong'. As for planting method, water culture, planting on a stone, planting on a charcoal, and assembled planting are expressed in poetry. Third, as for external space for potted plants, a place where a king stays, a bed room for a king, surrounding areas and gardens of private houses, and step stones were used as a space which adds artistic effects. Potted plants are placed on a table in a library, on a desk, on a drawer, and near a pillow as a small items in a room, and scholars enjoyed original characteristics and symbolism of the potted plants. Fourth, at the time of flowering of Prunus mume, poetry event was held to enjoy the tree and writing poetry begun. And at the time of flowering of Chrysanthemum monifolium, the flowers were floated in a liquor glass or shadow play was enjoyed. Fifth, potted plants played the role of garden ornaments in elegant events of a palace, the gentry, wedding ceremony, and sacrificial rites. Sixth, potted plants were used as tributes between countries, donation to a king, or a gift of a king. In addition, there were many cases where scholars exchanged potted plants and there is the first record of giving a potted plant in 'Mokeunsigo' by Mokeun Isaek, scholar in the late era of Goryeo. Seventh, at the time of flowering Prunus mume, Chrysanthemum monifolium, Gardenia jasminoides, Nelumbo nusifera, and Narcissustazetta var. chinensis, they enjoyed the particular fragrance and express it into poetry. Eighth, plant species from southern parts such as Camellia japonica, Daphne odora, Gardenia jasminoides, Citrus unshiu, Phyllostachys spp., Punica granatum, Rosa rugosa, and Musa basjoo, or foreign plant species, and species weak against the cold were utilized as pot plants for enjoying green trees indoors in northern central province in harshly cold winter.

Matsuri and Shinsen : Centering on the Rites of Ise Shrine and Emperor (마쓰리(祭)와 신찬(神饌): 이세신궁과 천황의 제사를 중심으로)

  • Park, Kyutae
    • The Critical Review of Religion and Culture
    • /
    • no.32
    • /
    • pp.13-54
    • /
    • 2017
  • The Ise Grand Shrine(伊勢神宮) dedicated to the sun goddess Amaterasu (天照大神), located in the city of Ise(伊勢市), Mie Prefecture of Japan, is a center of Japanese Shinto Shrines and composed of a large number of Shinto shrines centered on two main shrines, Naiku(內宮=皇大神宮) and Geku(外宮= 豊受大神宮). Historically it has kept very close relationship with Emperor, because its enshrined deity Amaterasu is generally said to be the ancestor of Imperial Family. The food and alcohol offering to the gods in Japanese Shinto rites are called Shinsen(神饌, ambrosia). Main subjects of this essay dealing with Shinsen are the various matsuri (rites) of Ise Grand Shrine and Emperor, such as Higoto-asayu-omike-sai(日別朝夕大御饌祭, offering repasts to the gods in the moring and evening everyday), Kan-name-sai(神嘗祭, offering of the year's new rice harvest), Shikinen-sengu-sai(式年遷宮祭, year of the ceremony), Nii-name-sai(新嘗祭, Ceremonial offering by the Emperor of newly-harvested rice to the gods), and Daijo-sai(大嘗祭, first ceremonial offering of rice by newly-enthroned Emperor). Then, the purpose of this essay is to examine not only the social, religious, and political but also cultural meaning of Shinsen especially in relation to Korea, basically introducing some types and characteristics of Shinsen with its mythological background and historical development. In so doing, I will show the concrete list of items and processes of Shinsen in those rites. For example, the social meaning of Shinsen might be examined in association with agricultural features, ancient dietary life, Japanese food, and its contemporary context etc. Besides, its religious meaning can be mentioned especially from the perspective of divine nature, life and rebirth etc. On the other hand, the politics was in ancient Japan originally called Matsurigoto which means the ancestral rites for gods. This suggests the political meaning of Shinsen that the politics in Japan has originated from Shinsen.

Study on Acknowledge and State of Clinical Experience for 3-years Dental Technology Department (3년제 치기공과 임상실습에 대한 인식 및 실태조사 - 일부 치과기공소 소장을 중심으로 -)

  • Park, Myung-Ja
    • Journal of Technologic Dentistry
    • /
    • v.17 no.1
    • /
    • pp.41-57
    • /
    • 1995
  • This study was conducted to collect and analyze previous information in order to manage efficience, improve experience effect and promote employment rate. The questionnaire interview with 27 chief of dental Laboratory refered clinical experience in technology department about clinical experience in 14 Jumior colleges were also investigated. The results were summarried as follows : The portion of age of 35-39 among chief of dental Laboratory was 40.7% which was the highest, that of male was 96.3%, that of junior college graduate was 97.5%, that of 10years experience was 92.6% and that of ceramic technician was 85.2%, 63.0% dental laboratory for clinical experience was a bore space of 30pyong. Aspect of dental laboratory management, manufacturing all part of prosthetic restoration was 29.6%, othodontic appliance and ceramic restoration was 7.4%, 3.8%, each. The percentage of 40.7 was having connection with 30-3a dental clinics and referring case per day was 10-19 cases(40.7%), manufacturing time of referred prosthetic restoration was 3-4 days(77.8%), places preparing seminar room for education was 29.6%, above a place of 40pyong was 11.1% 30-34 pyong and 35-39 pyong was 7.4% each. During training of 2 years education course student, 18.5% was rack of thorough occupational career. While 44.4% will want the more salary among 3years education course student, 74.1% will expect the more dental techmicians would engaged in their field, 51.9% will hope improve of their theory and practice, 29.6% be expected better skill and 14.8% be expected better theory. Attitude of clinical experience places was distributed by 59.3% of offering only experience chance, 25.9% of wasting time and 29.0% of annoying. The big emphasis of climical experience was thorough occupational career(44.4%). The clinical experience places of our college were selected after direct visiting, so their condition of management was not that bad but most of dental laboratory were poor in management state and working environment. Therefore it is difficult to choose appropriate places and dental Laboratory are also limited manpower and time as suppliers. So that it recommended to induce flexible management of experience period by interval and rotation of experience places among college and to applicate intern-system for employment ant industry-college cooperation aspect.

  • PDF