• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.79-79
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• 2020

기존과 현행 수자원 관련 의사결정은 법, 정책 및 규정의 틀에서 이루어진다. 그러나 우리나라에서 재현되고 있는 물의 사회적 현안과 갈등들을 생각할 때 이들 의사결정을 위한 틀이 충분한 역할을 하고 있는가에 의문을 제시하고 다른 길을 모색할 필요가 있다. 본 논문은 물 의사결정과 행동을 주도하기 위한 기존 틀의 보완책 또는 새로운 대안으로 섬진강 유역의 수자원 이용 사례를 통하여 물 윤리의 도입과 제도화를 제안한다. 물 윤리(water ethics)는 물 정책, 관리 및 실무 등 실제행동의 복잡한 환경에서 우리의 가치를 적용하기 위해 채택하는 원칙이다. 대부분 물 윤리적 행동선택은 여러 개의 상충되는 가치를 포함하고 있어 원칙이 필요하며, 존중할 가치와 무시할 가치를 선택해야한다. 또한 이러한 가치 결정을 신속하고 효율적으로 수행하여 물 갈등해소를 지원할 필요가 있다. 물 윤리의 가치 영역은 환경, 사회, 경제, 문화, 거버넌스 등 5개로 분류할 수 있다. 섬진강 유역에는 1960년 이후 경제발전을 위하여 섬진강댐, 주암댐, 보성강댐, 동복댐, 동화댐 등 6개의 댐이 건설되었고, 이들 댐에서 확보한 수량의 60%는 섬진강 유역 외의 생·공용수, 농업용수 및 발전용수로 도수되고 있다. 송정지점을 기준으로 연평균 유출량은 댐건설 전·후에 40%로 감소한 것으로 추정되었다. 물 윤리 차원에서 이들 정책은 1960년 정부가 추구했던 경제 가치에 최우선하는 물 관리라고 할 수 있다. 이러한 물 관리는 하류로 흘러가는 수량의 부족을 초래하여 하구 생태계 훼손을 초래하였다. 특히 하구 기수역에서 상류 유입량 감소로 인한 염수의 유입으로 재첩의 생태환경이 악화되어 전통적인 재첩채취 어업문화를 이루어 왔던 어민들이 고충을 겪고 있다. 물 윤리 차원에서 섬진강의 물 관리는 경제와 함께 환경, 사회, 문화 및 거버넌스 가치의 비중을 높일 필요가 있다. 또한 하구의 환경생태 가치 보전에 필요한 환경유량을 확보하기 위해 공업용수와 농업용수 이용 효율성(재이용, 절약, 경제성), 생활용수의 수요관리, 공급시설의 최적 운영 전략을 물 윤리적 차원에서 평가해야한다. 최종적으로 확보된 환경유량의 효과적 활용을 위하여 그동안 물 관리에서 소외되었던 어민을 포한한 지자체, 수공·농어촌공사·한수원 물 관리기관, 중앙정부 등 이해관계기관의 거버넌스 가치를 높여야한다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.8
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• pp.1118-1133
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• 2012

This research aimed to suggest an efficient improvement plan for school food services by investigating the operating situation and recognition of menu management in school food services for school food service dietitians (and nutrition teachers) in Chungbuk. A total of 328 questionnaires were distributed to school food service dietitians (and nutrition teachers) in Chungbuk by e-mail in September, 2010. A total of 265 questionnaires (80.8%) were used for the analysis. The highest allocation of nutrients and calories per day in school food services was 1:1.5:1.5 (breakfast : lunch : dinner) (38.5%). The reasoning for applying a flexible allocation of nutrients and calories per day was 'considering the ratio of students who do not eat breakfast' (59.2%). And the way to apply the flexible allocation for nutrients and calories per day was 'by agreement from the school operating committee in arbitrary data without situation surveys' (86 respondents, 49.4%), and 'by agreement from the school operating committee in analysis data through situation surveys' (80 respondents, 46.0%). The operational method of standardized recipes was 'cooking management site of national education information systems' (87.5%) and the items included in standardized recipes were menu name, food material name, portion size, cooking method, nutrition analysis, and critical control point in HACCP. The main reason for not utilizing all items of a cooking management site of the national education information system was 'no big trouble in menu management even though it is used partly (29.1%). In addition, the highest use of standardized recipe was for 'maintaining consistency of food production quantity' (74.0%).

• Clean Technology
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• v.20 no.3
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• pp.269-276
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• 2014

This study was aimed to develop catalytic system for the dry-based reduction of oxidized mercury ($Hg^{2+}$) to elemental mercury ($Hg^0$) which is one of the most important components comprising mercury continuous emission monitoring system (Hg-CEMS). Based on the standard potential in oxidation-reduction reaction, transition metals including Fe, Cu, Ni and Co were selected as possible candidates for catalyst proceeding spontaneous reduction of $Hg^{2+}$ into $Hg^0$. These transition metal catalysts revealed high activity for reduction of $Hg^{2+}$ into $Hg^0$ in the absence of oxygen in reactant gases. However, their activities were greatly decreased in the presence of oxygen, which was attributed to the transformation of transition metals by oxygen to the corresponding transition metal oxides with less catalytic activity for the reduction of oxidized mercury. Hydrogen supplied to the reactant gases significantly enhanced $Hg^{2+}$ reduction activity even in the presence of oxygen. It might be due to occurrence of combustion reaction between $H_2$ and $O_2$ causing the consumption of $O_2$ at such high reaction temperature at which oxidized mercury reduction reaction took place. Because the system showed high activity for $Hg^{2+}$ reduction to $Hg^0$, which was compatible to that of wet-chemistry technology using $SnCl_2$ solution, the catalytic reduction system of Fe catalyst with the supply of $H_2$ could be employed as a commercial system for the reduction of oxidized mercury to elemental mercury.

• Clean Technology
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• v.17 no.1
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• pp.69-77
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• 2011

The intrinsic $CO_2$ separation and hydrogen production system is a novel concept using oxidation and reduction reactions of oxygen carrier for both $CO_2$ capture and high purity hydrogen production. The process consists of a fuel reactor (FR), a steam reactor (SR) and an air reactor (AR). The natural gas ($CH_4$) is oxidized to $CO_2$ and steam by the oxygen carrier in FR, whereas the steam is reduced to hydrogen by oxidation of the reduced oxygen carrier in SR. The oxygen carrier is fully oxidized by air in AR. In the present study, the chemical looping moving bed reactor having 200 L/h hydrogen production capacity is designed and the hydrodynamic properties were determined. Compared with other reactors, two moving bed reactors (FR, SR) were used to obtain high conversion and selectivity of the oxygen carrier. The desirable solid circulation rates are calculated to be in the range of $20{\sim}100kg/m^2s$ from the conceptual design. The solid circulation rate can be controlled by aeration in a loop-seal. To maintain the gas velocity in the moving beds (FR, SR) at the minimum fluidization velocity is found to be suitable for the stable operation. The solid holdup in moving beds decrease with increasing gas velocity and solid circulation rate.

• Management & Information Systems Review
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• v.38 no.3
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• pp.151-170
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• 2019

This study deals with the rent-seeking behavior that exist in cultural voucher from the viewpoint of culture and arts management. Art organizations open to consumers, producers and governments of the arts are dependent on the internal and external influence of an open system. Researcher has found rent-seeking in the course of introducing policies and legalization of the cultural voucher business which has been promoted in the direction of democratization of culture or cultural democracy. Cultural voucher business is a legal term. Although the government has increased the budget or tried to change the policies of the cultural voucher business, the implementation of the cultural voucher business has been opposed to the diversity of consumption and equity as the consumption of genre and the concentration of the capital region have increased. These results were structurally related to the process of legalization and rent-seeking behavior in bureaucracy. This study reaffirms that the efficient operation standard of the cultural voucher business is a balance between the choice of the beneficiary, the competition of the supplier, and access to the cultural voucher. And the theory of rent-seeking was applied as a criterion to analyze this balance. Thus, it is suggested that the criteria of evaluation and improvement to check the conservativeness of bureaucrats are needed to establish a legal system applied to the purpose of 'cultural democracy' and 'democratization of culture' ideology and to guarantee individual creativity and autonomy.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.5
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• pp.773-779
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• 2022

Deep-sea fisheries in Korea play an essential role in supplying popular seafood and providing food security. Countries, as well as the IMO (International Maritime Organization), have attempted to establish an internationally harmonized safety standard for fishing vessels. However, starting with the adoption of 'The Torremolinos International Convention for the Safety of Fishing Vessel 1977', the '2012 Cape Town Agreement' was adopted, but the requirements for enforcement were not met. However, with the 2019 Torremolinos Declaration, the effect of the agreement became visible. Korea is also about to ratify the agreement, and deep-sea fishing vessels are subject to the agreement. The length of the hull or the gross tonnage can be selected as the criteria for applying the 2012 Cape Town Agreement, and this is also partially applied to the existing vessels. Analyzing 188 deep-sea fishing vessels registered as members of the Korea Overseas Fisheries Association to confirm the effect on the existing vessels showed that the application of gross tonnage had little impact on the ratification of the agreement. In addition, laws must be revised for the compulsorization of GMDSS facilities such as two-way VHF and radar transponders and for the safety familiarization of fishermen. In the industry, the facilities required by the agreement must be provided, and the fishermen must be familiarized with safety.

• The Korean Journal of Community Living Science
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• v.15 no.1
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• pp.91-104
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• 2004

This study was designed to investigate and evaluate the dietary intake of 30 housewives, aged 35 to 59. The subjects kept daily diet records lot a period of one year. Their mean daily nutrient intakes met or exceeded the RDA (recommended dietary allowance) for all categories except energy, calcium, iron, vitamin A, and vitamin B$_2$. Mean daily calorie intakes were 81.2% of the RDA. The subjects received about 19% of their energy from fat and 15% from protein. Nutrient adequacy ratios (NAR) were 0.60 for calcium, 0.62 for iron, 0.71 for vitamin A, and 0.76 for vitamin B$_2$. The mean adequacy ratio (MAR) was 0.79. Subjects received various nutrients from rice, pork, eggs, and Kimchi. Rice was a major contribute. to many subjects' nutrient intake due to the high amount of consumption. Pork, rice, and vegetable oil greatly contributed to fat intakes while eggs, pork, and beef supplied a high level of cholesterol compared to other foods. Kimchi, anchovies, and milk were the major contributors of calcium, while rice, pork, and Kimchi were the major contributors of iron. These results indicate that the major nutritional problem of middle-aged housewives is an overall inadequate intake of energy, calcium, and iron.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.454-454
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• 2021

하천 환경에 대한 최근의 사회적 관심은 하천횡단구조물에 대한 평가를 기존의 이□치수적 관점에서 환경□생태학적 관점으로 변화시키고 있다. 이는 자연하천(특히 충적하천)이 수공구조물에 가로막히면 일반적으로 유사, 식생 등의 하천 제반 환경에 부정적인 영향을 준다는 전제에서 댐에 대한 평가가 시작되는 것으로, 국내에서는 이러한 인식의 변화가 2010년대 이후 널리 퍼지면서 현재는 더 이상 신규 댐을 건설할 수 없게 되었다. 댐에 의한 수리 특성과 기후 변화 등으로 댐 하류하천의 유사, 식생, 생태변화는 최근 급격하게 진행되었지만, 정량적인 변화량 및 지표 도출에 대한 연구는 대부분 최근의 data를 반영하지 못하고 있어 관련 원인과 대책 제시에 다소 한계가 있다고 생각된다. 이에 본 연구에서는 낙동강 주요 지류 중 하나이며, 충적하천인 황강을 대상으로 가용한 data를 활용하여, 합천댐 건설 전□후의 유사, 식생변화로 대표되는 하천 환경변화를 정량적으로 분석하고, 변화 원인을 파악하고자 하였다. 유사환경의 변화 분석은 댐 건설 전부터 최근까지의 문헌들에서 조사□제시된 data를 이용하였다. 연도별 최심 및 평균하상고는 댐 건설 전과 비교해 1.0 m가량 감소하였는데, 댐에 의한 세류사 공급차단보다는 골재 채취 및 하도 정비 등이 지배적인 원인인 것으로 파악되었다. 유사 입경의 변화는 댐 건설 전 대비 조립화가 진행되어 모래비율이 감소하고 유사 입경(댐 직하류 약 2배)이 증가하였다. 이는 골재 채취 및 댐에 의한 세류사 차단에 기인한 것으로, 준설된 지역의 하상이 모래 대신 자갈로 대체되고 있기 때문인 것으로 판단된다. 유사량의 경우 몇 번의 조사 과정이 있었으나, 기준이 명확하지 않아 정량적인 변화는 파악하기 어려웠다. 제외지의 식생 분포는 본 연구에서 개발한 이미지 처리 기법을 동원하여 분석하였으며, 대상은 합천댐 하류 중 모래 사주의 비율이 큰 곳을 선택(3지점)하였다. 분석 결과 2008~2011년 이전까지 큰 폭으로 사주가 식생 서식처로 변화(약 20%)되었으며, 이후 큰 변화 없이 안정화 된 경향을 보였다. 이는 2009~2011년 동안 식생이 활착되는 봄~초여름의 강우량 감소, 댐의 홍수조절 및 하상 조립화로 인한 다년생 식생의 활착되고 성장할 시간이 확보되면서 홍수 등 외부 변화에 대한 식생의 대응 능력이 증가했기 때문인 것으로 생각된다. 합천댐이 황강 환경변화에 주는 영향은 분명하지만, 현재 상황은 기후 변화와 인위적인 골재채취도 주요 원인으로 판단되는 바, 향후 하천 환경 개선 계획 수립 시 이러한 변화 원인이 고려된 대책이 수립되어야 할 것이다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.8 no.1
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• pp.1-9
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• 2006

Regardless of the recent observed warmer winters in Korea, more freeze injuries and associated economic losses are reported in fruit industry than ever before. Existing freeze-frost forecasting systems employ only daily minimum temperature for judging the potential damage on dormant flowering buds but cannot accommodate potential biological responses such as short-term acclimation of plants to severe weather episodes as well as annual variation in climate. We introduce 'dormancy depth', in addition to daily minimum temperature, as a complementary criterion for judging the potential damage of freezing temperatures on dormant flowering buds of grape vines. Dormancy depth can be estimated by a phonology model driven by daily maximum and minimum temperature and is expected to make a reasonable proxy for physiological tolerance of buds to low temperature. Dormancy depth at a selected site was estimated for a climatological normal year by this model, and we found a close similarity in time course change pattern between the estimated dormancy depth and the known cold tolerance of fruit trees. Inter-annual and spatial variation in dormancy depth were identified by this method, showing the feasibility of using dormancy depth as a proxy indicator for tolerance to low temperature during the winter season. The model was applied to 10 vineyards which were recently damaged by a cold spell, and a temperature-dormancy depth-freeze injury relationship was formulated into an exponential-saturation model which can be used for judging freeze risk under a given set of temperature and dormancy depth. Based on this model and the expected lowest temperature with a 10-year recurrence interval, a freeze risk probability map was produced for Hwaseong County, Korea. The results seemed to explain why the vineyards in the warmer part of Hwaseong County have been hit by more freeBe damage than those in the cooler part of the county. A dormancy depth-minimum temperature dual engine freeze warning system was designed for vineyards in major production counties in Korea by combining the site-specific dormancy depth and minimum temperature forecasts with the freeze risk model. In this system, daily accumulation of thermal time since last fall leads to the dormancy state (depth) for today. The regional minimum temperature forecast for tomorrow by the Korea Meteorological Administration is converted to the site specific forecast at a 30m resolution. These data are input to the freeze risk model and the percent damage probability is calculated for each grid cell and mapped for the entire county. Similar approaches may be used to develop freeze warning systems for other deciduous fruit trees.

• The Korean Journal of Food And Nutrition
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• v.11 no.3
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• pp.323-328
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• 1998

This study was to investigate regularity of breakfast and food habits of commuting local college students. The regularly breakfast eating rate was found to be 32.9% in man and 26.5% in woman. The mean score of food habits was pretty low, 36.7 out of minimum possible score 12 and maximum 60. The mean score of nutrition attitude was 58.1 out of minimum possible score 18 and maximum 90. This survey showed that skipping breakfast or irregularity of breakfast led to overeating, high fat diet, lot of alcohol and imbalanced diet. It was known that breakfast was the most important among three meals. But having balanced breakfast daily was very difficult according to loss of appetite and busy schedule early in the morning. I suggested carbohydrate food, protein food, and vitamin & mineral food items desirable for nutritionally balanced, easily digestible, tasteful, quick and easily cooking breakfast menu. It was recommended to choose on item out of each of three food categories considering calory(1/3 of daily recommended calory intake for breakfast).