경영자보상 및 기업지배구조가 경영위험에 미치는 영향

송동엽(Song dong-yeob),김영환(Kim young hwan),이창대(Lee chang dae) 한국국제회계학회 2017 국제회계연구 Vol.0 No.75

본 연구는 경영자보상 및 기업지배구조와 경영위험의 관련성에 대하여 가설을 제시하고 실증분석하였다. 분석기간은 2004년부터 2016년이며, 유가증권 상장 기업들을 대상으로 하였으며, 차이분석 및 패널분석을 실시하였다. 분석결과, 경영자보상 및 기업지배구조에 따라 경영위험에 미치는 분석한 결과에서는 경영자보상(주식포트폴리오 가치민감도)과 기업지배구조지수는 경영자의 경영위험에 전반적으로 유의한 정(+)의 영향을 미치고 있다. 하지만, 차이분석 결과는 두 집단간의 경영자 보상(가치민감도, 총보상)이 유의한 정(+)의 관계를 보여주고 있으며, 이러한 단순결과는 경영자보상은 경영위험이 높은 기업집단에 비해서 경영위험이 낮은 기업집단이 보다 높다. 결국, 경영자 보상이 경영자에게 위험회피적인 투자안을 선택한다고 할 수도 있다. 즉, 경영자의 보상은 일반적인 경영자의 위험회피 성향을 감소시키지도 하지만 경영자는 사적유인을 위한 투자성향이 강해지고 그 결과 위험회피적인 투자안을 선택하는 경향이 나타날 수도 있음을 보여주고 있다. 하지만, 기업지배구조는 위험회피 성향을 가진 경영자의 사적유인을 감소시킨다. 즉, 경영자의 사적이익을 보호하기 위한 의사결정은 전체적인 기업지배구조 수준에 달려있고, 추가적으로 경영자 보상이 경영자의 사적이익 추구 행위는 완화시킬 수 있으며, 경영자보상과 기업지배구조는 기업의 투자위험선호 의사결정에 영향을 미칠 수 있음을 보여주고 있다. This paper tests the hypotheses regarding the relation between managerial compensations and corporate governance structures on managerial risk in Korea. This study collected the managerial compensation and governance structures data of the listed firms in Korea from 2004 to 2016. The results of analysis showed that the executive compensation(dollar equity incentives) and corporate governance index have significant(+) effects on the preference of managerial risk. The executive compensation(percentage incentives) and total executive compensation have no significant effects on managerial’s risk. We can infer from these findings that executive compensation and corporate governance structures have an influence on the risk-choice decision on the investment decision making.

人工湖沼의 水質汚染과 그 對策에 關한 硏究

安松燁 圓光大學校 1980 論文集 Vol.14 No.2

The development of urban areas, advancement of industry and the excessive use of agricultural fertilizer and/or chemicals, which has now brought a great many problems by nourishing lakes and breaking the balance of an ecosystem in water. This research, through the physical, chemical and biological examination of the three lakes (Gu-I, Deog-Jin and Su-Deog) which are in the area of Jeon-Bug Province, reached the following conclusion about the water pollution of the lakes and its countermeasures. 1. Gu-I reservoir maintains the balance of an ecosystem mode of life with favorable conditions in the physical, chemical and biological circumstance. 2. Deog-Jin lake and Su-Deog lake have become not only unfit for the standard of water quality for the use of recreation but also excessive prosperity of algae because of high concentrations of phosphorous and Nitrogen compounds. Therefore the difference between dissolved oxygen and carbon dioxide during the day and night is noticeable. During the day, the shortage of carbon dioxide has caused the limited factor of primary production. The ecosystem mode of life falls in inequality by changing dissolved oxygen concentration between day and night.

Complex法에 의한 配水管網의 最適管徑 決定에 관한 硏究

安松燁,金洙源,蘇在喆 圓光大學校 1986 論文集 Vol.20 No.2

Box-complex 알고리즘을 적용하여 배수관망의 관 포설경비를 목적함수로, 유속과 관경을 제약조건으로 고려하여 관경을 최적화 하였으며, 본 연구에 적용된 알고리즘의 적용가능성, 안정성 및 효율성등을 분석하여 다음과 같은 결과를 얻었다. 1. Box-Complex 알고리즘은 배수관망의 설계에 매우 적합한 최적화 기법이다. 2. 지반고가 일정한 배수관망의 관경을 최적화하여 최적관경을 얻었으므로 지반고가 일정하지 않은 배수관망이나 대형의 관망 최적화에도 용이하게 적용할 수 있을 것이다. 3. 도송배수관로와 배수관망을 연결하여 최적관경을 구하면 배수관망 자체만의 최적화에서 구한 관경보다 경제적인 관경을 얻을 수 있다고 사료된다. 4. 본 연구에서 적용한 알고리즘은 초기치를 달리하여도 목적함수값이 변하지 않고 짧은 시간내에 일정한 값에 수렴하므로 적용성이 있고 효율적이며 안정성이 있는 알고리즘으로 사료된다. This study deals with the optimization of pipe diameter applying the Box-Complex algorithm and considering the velocity of flow and pipe diameter as constraints with the pipe paving cost of water pipe networks as their objective function. Then this study obtains the results as follows, analyzing the applicational possibility, stability and efficiency of algorithm which are applied to this study. 1. A Box-Complex algorithm is a very suitable optimization technique for the optimal design of the water pipe networks. 2. The optimal pipe diameter will be applied easily for the optimization of the large scale water pipe networks or the water pipe networks that the ground height inclines because the optimal pipe diameter is attained through the optimization of pipe diameter of water pipe networks that the ground height is horizontal. 3. If the optimal pipe diameter is attained through the linking of a water pipe channel with pipe networks, then it will be more economical pipe diameter than the one which is attained from the optimization of pipe networks itself. 4. The algorithm applied to this study is applicable, efficient and stable algorithm because it converges to a constant value within a shore time and does not change its objective function value through the initial value of the design valuables is different.

무산소-호기 반응기의 유기물과 질소 제거모델 개발

안송엽,김환홍,소재철,권희태 원광대학교 2001 論文集 Vol.26 No.-

본 논문은 무산소-호기 유동상 반응기에서 폐수의 유기물과 질소제거에 관한 것을 나타내었으며, 이 공정은 두 개의 반응기 안에서 질산화와 탈질화로 얻어지는 제거율 결과를 모형화하여 검토하였다. 무산소조의 미생물 농도가 모형식으로 표현되면 -2079.898V2 - 202.2029(H/A) + 1123이고, BOD removal = -0.00613 HRT2 + 0.4014HRT + 46.993 and NO3-N removal = -0.0029 HRT2 + 0.1872 HRT + 77.45 로 각각 표현되어진다. 이러한 실험치는 모형치와 비슷한 값을 가진다고 할 수 있으며, 이 결과는 다른 방법에도 적용이 가능하다고 판단된다. This paper aims to get rid of BOD and nitrogen in wastewater as the anoxic-aerobic fluidized bed. The process for the removal of nitrogen consists of nitrification and denitrification in two reactors. The estimated formula for, Anoxic are Biomass concentration = -2079.898V2- 202.2029(H/A) + 1123, BOD removal = -0.00613 HRT2 + 0.4014HRT + 46.993 and NO3-N removal = -0.0029 HRT2 + 0.1872 HRT + 77.45. The experimental values are similar to values of estimated formula. Therefore, this result is able to adapt the other cases.

유동상에 의한 합성하수의 처리 특성

안송엽,권희태 圓光大學校大學院 2000 論文集 Vol.24 No.-

유동상은 반응기 형태의 변화에 따라 설계인자 및 운전 효율이 크게 변화하는 데, 효율적 운전을 위해서는 영향인자 간의 상호관계를 파악하는 것이 대단히 중요한 문제이다. 미생물막의 형성은 상향유속의 영향이 큰 것으로 나타났으며 최적의 상향유속은 1.17cm/sec∼1.32cm/sec로 나타났다. 각 반응기의 형태, 즉 A/H비에 관계없이 최대의 처리효율을 보이는 media 충전량은 18%이었고, BOD 부하 4.5kg-BOD5/㎥·d에서 상향유속은 1.32cm.sec이었다. 1.17cm/sec이하의 낮은 상승유속에서는 처리효율을 저하시킬 수 있는 bioparticles의 합체현상이 발생함을 알 수 있었다. A/H비에 따라 최대 처리효율은 94∼92%로 나타나므로, A/H비가 처리율에 영향을 준다는 것을 알 수 있었다. Bioparticles의 합체현상으로 인한 처리율의 감소를 막을 수 있는 최소유량은 A/H비에 따라서 다르게 나타난다. Process intensification without any increase in bed requires the exploitation of fluid mechanical phenomena as the basis for elegant solutions to the process engineering problems which result from the need to retain and control the immobilized biomass, and for biomass recovery. The fluidized bed biological reactor provides a solution to these needs. The wastewater treatment characteristics of the fluidized bed was filled with sand media. Indirect aeration were studied experimentally. The optimal range of velocities was 1.17cm/sec∼1.32cm/sec, and under the BOD loading condition of 4.5kg-BOD5/㎥·d, the media concentration appeared to 18% and surface upflow velocity also 1.32cm/sec for the maximum BOD removal. The BOD loading and F/M ratio condition of some of the 'steady-state' reactor, a degree would be expected. The medium effluent unfiltered BOD5 was 92%∼94%, at an HRT of 32 minutes.

接觸安定法을 이용한 糞尿處理에 관한 硏究

全鍾煥,李柱錫,蘇在喆,安松燁 圓光大學校 1987 論文集 Vol.21 No.2

本 硏究에서는 연구책임자의 學述的 硏究經驗을 토대로 하여 보다 나은 處理工程을 다음과 같이 개발하였다. 旣存의 糞尿處理場 1次處理工程인 好氣性消化槽를 接觸槽와 安定槽로 분리하고 2次沈澱池에서 배출되는 返送슬러지를 全部 安定槽로 流入시켜 安定化시킨후 接觸槽로 보내는 接觸安定法의 工程으로 改造하고 流入糞尿 1對 稀釋水8의 比率로 糞尿를 流入시키며 實驗考察한 결과 97%이상의 處理效率을 얻었고 惡臭가 거의 발생하지 않은 쾌적한 環境이 되었다. In this study, the researchers found the better treatment process of nightsoil treatment plant on the basis of the responsible researcher's academic experience. The first treatment process, that is, aerobic digester of the existing nightsoil treatment plant is separated into the contact tank and the stabilization tank. And all the return sludge which discharge from the final sedimentation tank is folloed in the stabilization tank and is kept the stabilization situation there Afterwards, it is sent to the contact tank. The researchers remodeled as these contact stabilization processes and put in the contact tank at rate of inflow nightsoil one to diluted water eight. The results of above practical experiences showed the effective treatment above 95 percents and the comfortable environment with few foul ordor.

Discrimination of citrus fruits using FT-IR fingerprinting by quantitative prediction of bioactive compounds

Song, Seung Yeob,Kim, Chun Hwan,Im, Soon Jea,Kim, In-Jung 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.2

High throughput screening of citrus samples containing elevated concentrations of total carotenoids, flavonoids, and phenolic compounds was accomplished using ultraviolet-visible spectroscopy and Fourier transform infrared (FT-IR) spectroscopy, combined with multivariate analysis. Principal component analysis and partial least squares discriminant analysis using FT-IR spectra were able to differentiate seven citrus fruit groups into three distinct clusters corresponding to their taxonomic relationship. Quantitative prediction modeling of total carotenoids, flavonoids, and phenolic compounds in citrus fruit was established using a partial least squares regression algorithm from the FT-IR spectra. The regression coefficients ($R^2$) of predicted and estimated values of total carotenoids, flavonoids, and phenolic compounds were all 0.99. The results indicated that accurate quantitative predictions of total carotenoids, flavonoids, and phenolic compounds were possible from citrus fruit FT-IR spectra, and that the resulting quantitative prediction model might be useful as a rapid selection tool for citrus fruits containing elevated carotenoids, flavonoids, and phenolic compounds.

Distribution of Tetracyclines Resistant Bacteria and Resistance Genes in the Soil Fertilized with Livestock Manure Compost

Song Yeob Kim(김송엽),Jang Hwan Kim(김장환),Sung Chul Kim(김성철),Yong Bok Lee(이용복) 한국토양비료학회 2015 한국토양비료학회 학술발표회 초록집 Vol.2015 No.5

A New Selective Medium for Detecting Acidovorax avenae subsp. avenae in Rice Seeds

Song, Wan-Yeob,Kang, Mi-Hyung,Kim, Hyung-Moo The Korean Society of Plant Pathology 2000 Plant Pathology Journal Vol.16 No.4

A selective agar medium was developed and tested for the isolation of Acidovorax avenae subsp. avenae, the causal bacterial pathogen of bacterial brown stripe, from rice seeds. The new selective agar medium, designated sorbitol pyroglutamic acid agar (SPA) medium, contained 0.5 g of $K_2$HPO$_4$, 3.0 g of Na$_2$HPO$_4$, 2.0 g of D-sorbitol, 0.2 g of L-pyroglutamic acid, 10.0 $m\ell$ of tween 80, 40.0 mg of victoria blue B, 15.0 g of agar, 150.0 mg of ampicillin and 25.0 mg of vancomycin per litter. Colonies of A. avenae subsp. avenae on SPA medium were smooth, round, convex, shiny, blue and 1.5-2.0 mm in diameter 4 days after incubation at 28$^{\circ}C$. Blue colored colony having dark blue zone was typical type of A. avenae subsp. avenae colonies on the medium. Mean recovery of 8 isolates of A. avenae subsp. avenae on the selective SPA medium was 95.8% in comparison to that on KB medium. The saprophytic bacteria were reduced to 97.9% on SPA medium compared to those on KB medium. Most of other rice seedborne bacteria as well as reported pathogenic bacteria were failed to grow on SPA medium. This medium was highly selective for recovering A. avenae subsp. avenae from rice seed samples, and it could be used to enhance the recovery of this bacterium from rice seed samples, which may be contaminated with large numbers of competing microorganisms.

Optimal Design of a Sheath Flow Nozzle for Detecting Biological Warfare Agents

Song, In-Yeob,Choi, Seung-Ki,Kim, Youn-Jea American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.11

<P>A biological warfare agent (BWA), one of the most hazardous weapons, can destroy overall ecosystems including human beings and threaten national security. BWAs are difficult to detect due to their colorless and odorless properties as well as their latent period. A sheath flow nozzle, which is widely used in laser detection systems for micro/nano-sized particles, focuses the flow of aerosol particles. The geometrical configuration of a sheath flow nozzle affects the flow characteristics of aerosol particles, which results in a large impact on the detecting performance. In this paper, numerical analysis on the sheath flow nozzle was conducted using ANSYS CFX 16.1 to improve detecting performance. The results of streamlines, pressure, and velocity distributions with different exit angles of the outer nozzle are graphically depicted.</P>