• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.164-168
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• 2010

최근 기후변화로 인한 지구온난화, 엘니뇨 및 라니냐 등의 현상은 과거에 경험하지 못했던 기상재해를 유발시키고 있으며, 피해규모가 전 세계적으로 매년 증가하고 있는 추세이다. 이는 기후변화가 국지적이 아닌 전지구적인 형태로 발생하는 것으로 볼 수 있으며, 이를 고려한 수자원 영향 평가를 위해서는 인접 국가들과의 연계분석이 우선적으로 이루어져야 한다. 일찍이 국내에서는 국가규모의 수문해석에 대한 필요성이 제기되어 왔으나, 국외 지역의 지형특성 및 기상조건에 대한 자료 획득과 전구수문해석이 가능한 적정 수문모형활용의 어려움으로 그동안 등한시되어왔다. 이에 본 연구에서는 국가 규모의 유출해석에 필요한 전지구 자료를 구축하고 자료의 가용성을 판단하기위해 국내를 대상으로 유출해석을 수행하여 모의 결과의 정확도를 평가하였다. 모의를 위해 전세계적으로 국가규모의 해석에 있어 적용성이 검증된 지표수문해석모형을 활용하였으며, 관측유량 대비 모의유량의 정확도를 평가한 결과 일별 유출해석 시 정확도가 매우 저조한 것으로 나타났으나, 기간별(10일 및 월별 등) 분석 에서는 신뢰할 만한 결과를 도출할 수 있었다. 따라서 전지구 자료를 활용하여 국외 수문해석을 수행할 경우 사전에 자료 품질에 대한 충분한 검토가 있어야 할 것이며, 기간별 수문해석을 통해 모의 결과를 활용하는 것이 적절하다고 판단된다.

• The Korean Journal of Food And Nutrition
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• v.11 no.3
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• pp.334-339
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• 1998

Flatfish strips were treated with 0.5%(v/v) acetic acid(AA), 0.5%(v/v) lactic acid(LA), or 0.5%(v/w) citric acid(CA) for 5 min. All strips were individually placed in Whirl-Pak sample bags and stored at 4 or 10$^{\circ}C$. pH, TBA, color, and sensory quality of strips were evaluated after 0, 3, 6, 9, and 12 days of storage time. The pH of samples treated with AA for 5 min ranged from 5.39 to 6.64 for 12 days at 4$^{\circ}C$, which had a significantly (P<0.05) lower level compared to the controls during storage time. Acid treatments had a significantly (P<0.05) higher levels of TBA values compared to the controls for 12 days at 4$^{\circ}C$. All acid treatments had lower Hunter a and b color scores compared to the controls. Acid treatments were liked less by sensory panels than the fresh control due to acidic odor and flesh discoloration.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.371-373
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• 2012

노화-구도 연도교 개설공사 사업에 따라 대상해역을 이용하여 통항하는 선박에 대하여 교량 건설을 고려한 종합적인 해상교통 안전성 향상 방안 제시를 위해 이론적 고찰 및 Full-Mission Shiphandling Simulator를 이용하여 평가하고 근거자료를 작성한 후, 최적의 교량시설을 계획하도록 기초자료를 제공하며, 인허가 과정중 도출된 해상교량안에 대한 해상교통안전진단을 해사안전법 및 동 법 시행규칙에 의거하여 실시하였다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.24 no.6
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• pp.715-724
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• 2022

With the enforcement of the infrastructure management act, the importance of utility tunnels that jointly accommodate life-lines such as electricity, communication, water supply, and heating facilities has increased. The currently applied utility tunnel maintenance system is managed in an accident-preventive safety-based evaluation method. However, this evaluation method has limitations in effective maintenance. In this study, performance evaluation items were derived through the Delphi method to suggest a criterion for quantitatively evaluating the performance of utility tunnels, and the weights for each item were calculated through the Analytic Hierarchy Process (AHP) method. In the future, it is judged that a more reasonable performance evaluation standard of utility tunnel can be prepared if modifications and supplements are made through field application.

• Journal of Korean Tunnelling and Underground Space Association
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• v.20 no.1
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• pp.119-130
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• 2018

The VE/LCC study on the existing multi-utility tunnel examined the economical feasibility of the collective area through the cost-benefit analysis of the ten major routes of Seoul for the benefit (7 items) and the cost (5 items) through quantitative methods. In this paper, we analyzed the economic efficiency of 61 sectors by adding 3 items (reduced traffic accident, reduced vehicle noise, social-economic loss). The reduced traffic accident item is an improvement of the traffic accident cost that can be saved by the implementation of the project, and the reduced vehicle noise item is an indicator of the amount of noise change caused by the implement of the business. Finally, the social-economic loss items represent the impact on the local economy due to the construction of the multi-utility tunnel. The amounts of the additional items were compared and items added in the open type and tunnel type multi-utility tunnel were analyzed for each analysis. Result on the analysis, it analyzed the items applied to the basic and detail models in the economic evaluation of the multi-utility tunnel design, and makes it possible to evaluate the economic efficiency more efficiently. The economic evaluation of the basic and detailed models including the items presented in this study will be often used in the design of the multi-utility tunnel design.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.6
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• pp.903-911
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• 2019

The multi-utility tunnel is one of the essential social infrastructures, but it is difficult to establish the multi-utility tunnel due to the scale of the National Land Planning and Utilization Act (2 million square meters). In this paper, we analyze the feasibility of establishing the multi-utility tunnel in the existing city in order to activate the multi-utility tunnel installation. For the feasibility analysis, the scale was classified into four categories based on related laws, and related indicators were selected and evaluated using feasibility and economic analysis. Three kinds/four kinds of suitable multi-utility tunnel for the scale of the existing city were shown, and five kinds of multi-utility tunnel were considered suitable for the new city over 2 million square meters. The results of the overall score evaluation of the tunnel type of the existing city and the open type of the new city of 2 million square meters or more, which is the obligation to install the multi-utility tunnel, do not show much difference and suggest the validity of the installation of the multi-utility tunnel in various scale of the existing city.

• Korean Journal of Poultry Science
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• v.29 no.1
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• pp.7-12
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• 2002

This study was conducted to investigate the effects of feeding germanium colloid(GC) on the egg quality and immune response in 1aying hens. One hundred forty four layers, 32-wk-old ISA Brown, were used in a 40-d experimental assay with a 7-d adjustment Period. Dietary treatments included 1) control (basal diet; CON), 2) 0.5ppm GC (basal diet + 0.Sppm germanium), 3) 1.0ppm GC (basal diet + 1.0 ppm germanium) . For overall Period, hen-day e99 Production tended to be increased as the concentration of GC in the diets was increased with significant difference (linear effect, p<0.01) . Laying hens fed 0.5ppm GC diet were significantly (P<0.01) lower in egg shell breaking strength than laying hens fed CON or 1.0 ppm GC diets. Egg shell thickness and yolk color were not influenced by GC supplementation. Laying hens fed 1.0ppm GC diet were h19her in egg yolk Index than laying hens fed CON and 0.5ppm GC diets with significant difference (quadratic effect, p<0.02) . As adding level of germanium colloid increased in the diets, the total serum cholesterol and triglyceride tended to be decreased. However, the effect of GC supplementation did not show significant in the levers of total serum cholesterol and triglyceride. Also, HDL- and LDL+VLDL-cholesterol in serum were not statistically different among the treatments. Red blood cell and white blood cell count in blood tended to be increased as the concentration of GC in the diets was increased with significant difference (P<0.01) . Hematocrit concentration in blood was successfully Increased by supplementation of GC (P<0.01) . In conclusion, although egg quality was not influenced by GC supplementation, supplementing GC Improved Immune status in laying hens.

• Food Science of Animal Resources
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• v.29 no.4
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• pp.430-436
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• 2009

A component of pine bark extract, pitamin, is known as an antioxidant and antimicrobial agent that exerts a variety of physiological effects; this compound has also been used widely in human beings. A 35-day trial was conducted to determine the influence of dietary pitamin premix via a sensory evaluation and evaluations of the TBARS, and meat quality in broiler chicken. We used 4 treatments groups: Control, Antibiotics, Pitamin premix 0.1%, and Pitamin premix 0.2%. The amino acid and protein contents in chicken breast muscle did not differ among the treatment groups. The pH of broilers fed on diets containing pitamin premix was lower (p<0.05) than broilers fed on the control and antibiotics diets, whereas the WHC was significantly higher in chicken breast muscles fed on the diet containing pitamin premix compared to the control and antibiotics groups (p<0.05). The TBARS is intended to be increased during the storage period (in days), and was significantly lower (p<0.05) in the chicken thigh muscles with skin from broilers fed on the diet containing the pitamin premix as compared to the control and antibiotics group (p<0.05). The sensory evaluation of boiled chicken, with the exception of the antibiotics group, revealed significantly better results from chickens fed on diets containing pitamin premix than the control group (p<0.05). These results suggest that dietary pitamin premix may improve the shelf life, flavor, taste, and meat quality in broiler chicken.

• Proceedings of The Korean Cleft Lip And Palate Association
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• 2003.06a
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• pp.42-42
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• 2003

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.105-105
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• 2023

최근 기후변화로 인해 매년 집중호우 및 태풍으로 인한 침수피해가 증가하고 있다. 현재 국내에서는 이러한 피해를 줄이기 위해 구조적 대책뿐만 아니라 치수사업의 의사결정을 지원할 수 있는 비구조적 대책들이 대두되고 있다. 비구조적 대책으로는 재해예방사업 등에서 투자우선순위를 결정할 수 있는 다차원법, 홍수취약성지수 등과 같은 정량적, 정성적 홍수위험도 평가가 대표적이다. 하지만 기존 시군구별 홍수위험도 평가는 빈도별 홍수위험지도의 침수면적을 반영하지 않았었다. 따라서 본 연구에서는 서울특별시를 대상으로 빈도별(50, 80, 100 및 200년) 설계홍수량에 따른 홍수위험지도를 작성하고 IBA(Indicator Based Assessment) 방법을 활용한 홍수위험도 평가를 실시하였다. 홍수위험지수는 4가지 항목(Hazard, Exposure, Vulnerability 및 Capacity)과 8개의 세부지표로 구성하였다. 분석결과, 송파구와 성동구는 100년 빈도, 용산구와 강남구는 80년 빈도와 100년 빈도에서 홍수위험지수의 순위 변동이 관측되었다. 순위 변동이 발생한 주요 원인으로는 홍수위험도 평가에 반영된 Exposure 및 Vulnerability 항목에 포함된 세부지표별 지수가 시군구 내 빈도별 침수면적이 변화함에 따라 증가 혹은 감소했기 때문이었다. 본 연구를 활용하면 빈도별 침수면적 변화에 따른 시군구별 홍수위험도를 파악할 수 있으며, 그에 따른 예방책 또한 마련할 수 있을 것이다. 그리고 공간분석을 통해 도출된 통계지도를 활용하여 홍수위험에 직접적으로 노출된 건물 및 인구 밀집지역을 파악하고, 해당 지역을 대상으로 치수사업을 전개할 수 있을 것으로 판단된다.