• Economic and Environmental Geology
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• v.3 no.2
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• pp.123-133
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• 1970

위에서 상논(詳論)한것을 요약(要約)하면, 1) 본(本) 지성(地城)을 구성(構成)하는 지질(地質)은 신나통(新羅統)의 퇴적암류(堆積岩類), 이를 관입(貫入)하는 불국사순(佛國寺純)의 화강록암(花崗綠岩) 및 암맥(岩脈)으로 되어 있다. 2) 광구일대(鑛區一帶)의 퇴적암류(堆積岩類)는 원내(原來)의 퇴적상(堆積相)과 화강섬록암(花崗閃綠岩)의 관입등(貫入等)으로 규화(珪化)되 어 규암(珪岩) 또는 규화(珪化)된 혼펠스로 변(變)하여 있다. 3) 지질구조(地質構造)는 단순(單純)한 배사(背斜)를 나타내 며 퇴적암(堆積岩) 및 화강섬록암중(花崗閃綠岩中)에 수(數) sets의 절이(節理)가 발달(發達)하여 이들에 따라 광화작용(鑛化作用)이 이루어졌다. 4) 광상(鑛床)은 퇴적암(堆積岩) 및 화강섬록암중(花崗閃綠岩中)의 열하에 연(沿)하여 배태(胚胎)하며 연(軟)망간광(鑛) 광맥(鑛脈)과 금은광맥(金銀鑛脈)의 2종(種)이 발달(發達)된다. 5) 금은광맥(金銀鑛脈)은 맥폭(脈幅)이 좁고 주향방향(走向方向)의 연장(延長)이 단속(斷續)되 며 분석결과(分析結果) 금(金)은 없고 은(銀)은 23.3g/t 내지(乃至) 913.3g/t 이여서 가행가치(稼行價直)가 없다. 6) 망강광맥(鑛脈)은 수조(數條)있으나 주목(注目)만한 것은 제(第)4갱맥(坑脈)과 제(第)5갱맥(坑脈)으로서, 전자(前者)는 연장(延長) 120m, 평균맥폭(平均脈幅) 0.5m 추정(推定)되며, 평균품위(平均品位)는 Mn 약(約) 17.5%이다. 후자(後者)도 연장(延長) 120m, 평균맥폭(平均脈幅) 0.6m 추정(推定)되며, 평균품위(平均品位)는 15.7%이다. 7) 광맥(鑛脈)은 후화강섬록암시기(後花崗閃綠岩時期)의 열하의 방위(方位)에 지배(支配)받으며, 주향(走向) 및 경사방향(傾斜方向)으로 전변(轉變)한다. 그러나 규암질모암(珪岩質母岩)의 성질(性質)로 보아 광상(鑛床)이 팽대(膨大)하여질 가능성(可能性)은 없다. 8) 망간 및 금은광맥(金銀鑛脈)은 열수광상(熱水鑛床)에 속(屬)한다.

• Journal of Chest Surgery
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• v.31 no.3
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• pp.324-328
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• 1998

Esophageal hemangioma is an extremely rare benign tumor that causes dysphagia and massive upper gastrointestinal bleeding. Although certain abnormalities seen on a barium swallow esophagography or at endoscopy may suggest an esophageal hemangioma, a contrast CT and radionuclide angiography using a blood-pool radiopharmaceutical can characterize the intense vascularity of the tumor. We experienced the ase of a 7$\times$7$\times$3.5 cm in size giant cavernous hemangioma of the lower 1/3 of esophagus in a 40 year old man. A mural cavernous hemangioma was diagnosed with a barium swallowed esophagogaphy, endoscopy, and a contrast CT. It was treated successfully by transthoracic esophagectomy including the tumor and esophagogastrostomy.

• Korean Journal of Construction Engineering and Management
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• v.14 no.6
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• pp.78-89
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• 2013

Post-evaluation system reflects the results of performing a public construction project in the future similar public construction projects to be utilized in the planning. However, the current system simply compares the expected values, such as demand, B/C ratio, cost of construction, construction period, with the actual values after the completion of construction. In addition, most public owner does not actively conduct the post-construction evaluation tasks, so that the evaluation results has not been returned to early stage of a construction project. In this study, status of the post-construction evaluation system is investigated by a survey of the public owner and the construction project evaluation system of the United States and Japan was analyzed. This paper presents the improvement scheme of utilization of the results of the post-construction evaluation system. Through improving the post-construction evaluation system, it is expected that public agencies would easily utilize the post-construction evaluation.

• Journal of Korean Society of Transportation
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• v.18 no.6
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• pp.101-110
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• 2000

본 논문의 목적은 우리들의 현실적 노면표지 형태가 그 강도, 종류 및 출현빈도 측면에서 드러내는 지속적 증대 내지 강화 경향성을 문제점으로 제기하면서, 이런 노면표지 형태와 운전행동 간의 관련성에 대한 심리학적 제반 이론들을 고찰해보고 아울러 여기서 상호 연관적 특성을 밝혀주는 하나의 적절한 모델을 개발해보고자 하는 데에 두었다 이 모델에서는 운전자의 사고예방이나 안전운행이 곡 필요한 수준의 노면표지 자극화(stimulation)를 통해 조성된 쾌적한 교통환경에서 보다 용이하게 가능하다는 점이 전제되고 있다. 우리가 인간행동을 총체적으로나 효과적으로 분석하는 데 있어서는 일반심리적이거나 행동주의적 제반 이론 관점이 다소 미흡하다는 점이 지적되었다. 반면에 보다 거시적이고 종합적인 통찰에 중점을 두고있는 형태주의 심리학이나 장 이론적 시각은 행동분석 시에 비교적 결실적인 것으로 밝혀졌다 노면표지 자극의 양상여하가 운전자에게 스트레스, 정보과부담, 과도한 심리적 각성상태 등으로 인해 부정적인 영향을 미친다는 점에서는 이런 문제점이 환경심리학적 고찰측면에서도 관심의 대상이 되고 있다. \"노면표지 조성화 양 관점 모델\"에서 시사되고 는 터이지만. 이 모델에서의 노면표지 형태가 이론적인 면에서 \"정서-인지적\" 인간관에 근거를 두고있어 궁극적으로 이것이 옳다면, 그것은 곡 필요한 최소한의 수준에 머물러야 한다는 것이다. 올바른 운전행동, 다시 말해 교통법규 준수 행동은 노면표지 양상 측면의 각종 자극적 강화대책보다도 오히려 실효성 있는 교통교육, 확실한 적발 단속과 엄중한 처벌대책에 상대적으로 훨씬 더 큰 비중을 두고있는, 바로 그런 운전자의 의식개혁을 통해 비로소 제대로 정착될 수 있기 때문이다. 이 모델의 타당성 여부는 후속적 실증연구를 통해 해명되어질 수 있을 것이다.

• Journal of the Korean GEO-environmental Society
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• v.21 no.9
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• pp.5-14
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• 2020

This study analyzed the reinforcement effect by conducting laboratory test, model test and program analysis to utilize the surface stabilizer used for the restoration work of collapsed slopes as a reinforcing material for aging reservoirs that exhibits a curing reaction similar to cement. Based on the results of the laboratory test, a model test and program analysis were performed by applying 9% of the mixing ratio. As a result, when the surface stabilizer was used in aging reservoir, it was found that the flow of water only occurred on part of the slope and underground in reservoir. And the water flow could be reduced inside the reservoir. In addition, it was analyzed that the seepage discharge could be reduced by about 42% and the saturated area within the reservoir by about 73%, thereby securing the stability of the aged reservoir.

• The Korean Journal of Quaternary Research
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• v.15 no.2
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• pp.83-91
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• 2001

The environmental change during the upper Holocene was restored at Kimpo alluvial plain on the left bank of Han-river near the Yellow Sea according to the results of pollen analysis and carbon dating, based on the sea-level change from Ilsan area. Pollenzone I (5.8~7.0 m.a.s.l.) was the period of AP-dominance, including mostly Alnus. Study area was under the lagoon or swamp environment influenced by Flandrian transgression during 5,000~3,200 BP. Pollenzone II (7.0~7.4 m.a.s.l.) was the period of Spore & NAP-dominance. It represents that the vegetational environment was changed to drier condition by falling underwater surface caused by sea-level regression, and influenced by human activity during 3,200~2,300 BP. Subzone I a represented the characteristics of the climax of transgression. During subzone I b, herbs with the dominant Alnus were increased gradually, and it was correlated to the stagnation of high sea-level. Subzone II a was the dominant period of Spore by the gradual falling of sea-level. After that, the study area in swamp was emerged to the lowland by the fallen sea-level and herbs, especially Gramineae increased suddenly during Subzone II b. The sudden increase of NAP such as Artemisia, Chenopodiaceae and Umbelliferae with Gramineae during this period indicates the beginning of agriculture at this study area.

• Korean Journal of Food Science and Technology
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• v.35 no.3
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• pp.447-454
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• 2003

Chemical and microbial properties of Northern sand lance, Ammodytes personatus, sauce fermented at $15^{\circ}C$ with fermentation accelerating agents, koji, enzyme, and squid viscera, were analyzed. Total creatine content of Northern sand lance sauce with squid viscera increased up to 2 months of ripening and decreased gradually thereafter, while that with koji or enzyme, and control, increased up to 3 months of ripening and then decreased slowly. TBA values of all samples increased sharply during early ripening, followed by slight decrease. Free amino acid content with all agents increased continuously as fermentation progressed. Major free amino acids of Northern sand lance sauce were glutamic acid, alanine, valine, leucine, and lysine. Total viable cell counts with all agents also increased during early ripening and then decreased. Total viable cell count of Northern sand lance sauce with squid viscera was the highest followed that with koji, enzyme, and control. Northern sand land sauce manufactured with koji showed the most acceptable sensory evaluation result, followed by that with squid viscera.

• Journal for History of Mathematics
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• v.24 no.3
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• pp.37-58
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• 2011

The development of recent Mathematical Logic is mostly originated in Hilbert's Proof Theory. The purpose of the plan so called Hilbert's Program lies in the formalization of mathematics by formal axiomatic method, rescuing classical mathematics by means of verifying completeness and consistency of the formal system and solidifying the foundations of mathematics. In 1931, the completeness encounters crisis by the existence of undecidable proposition through the 1st Theorem of G?del, and the establishment of consistency faces a risk of invalidation by the 2nd Theorem. However, relative of partial realization of Hilbert's Program still exists as a fruitful research program. We have tried to bring into relief through Curry-Howard Correspondence the fact that Hilbert's program serves as source of power for the growth of mathematical constructivism today. That proof in natural deduction is in truth equivalent to computer program has allowed the formalization of mathematics to be seen in new light. In other words, Hilbert's program conforms best to the concept of algorithm, the central idea in computer science.

• The Korean Journal of Pharmacology
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• v.29 no.1
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• pp.1-8
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• 1993

To elucidate involvement of platelet-activating factor (PAF) in cerebral ischemia-reperfusion injury, male Sprague-Dawley rats and albino mice of either sex were subjected to a 10-min bilateral carotid artery occlusion and 6-hr recirculation. The McGraw stroke index in mice was markedly inhibited by PAF antagonists, BN 52021 and CV 6209 (1 mg/kg, i.p., each) When they were administered 10 min before bilateral carotid artery occlusion or 1 hr after reperfusion. The increases in brain water content were significantly attenuated by treatment with BN 52021 or CV 6209 in both animals. BN 52021 exhibited a significant improvement in the postischemic blood pressure change in association with a beneficial effect on the delayed dilatation of pial arterioles after 10 min of ischemia. Thus it is suggested that PAF plays an important role as an endogenous mediator in development of cerebral ischemia-reperfusion injury, and further, specific antagonists to PAF will be able to prevent or reverse the pathological sequelae of cerebral ischemia.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.1C
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• pp.1-10
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• 2011

This paper simulates the piping effect, found levees with large difference in coefficient of permeability within the foundation such as the Gim-po Levee, via centrifuge model test which is a model test. We have also conducted a numerical analysis under the same conditions as the centrifuge model test to compare its results. First, we decided to use the centrifuge model based on the Gim-po Levee, and the tests were executed on a model levee with pore water pressure transducers. We have found that most of the water flows through the permeable layer and causes the piping effect. Via video camera footage, we have found that the piping effect occurred at the toe of the model levee. The characteristic of pressure head distribution, obtained from the pore water pressure transducers, also proves the occurrence of the piping effect. The numerical analysis results also showed the same results as the centrifuge model test. We have simulated the piping effect via centrifuge model test and believe that the centrifuge model test is viable for various tests, predictions and evaluation of the levee problems.