막분리 혐기-호기활성오니법에서의 용해성 유기물질 및 질소의 제거

김태동 安東大學校 工業技術硏究所 1997 공업기술연구논문집 Vol.4 No.1

The anaerobic-aerobic activated sludge process with ultrafiltration membrane system for solid-liquid separation has potentially wide application in the processing of industrial and domestic wastewater treatments. The process can maintains high biomass concentration in the reactor and remove nutrients. However, it is observed that non-biodegradable organic substances accmulate in the bioreactor. The objective of this research is to investigate the removal process of the soluble organic substances and nitrogens accumulated in the bioreactor and their influence on activity of microorganisms in the process. Laboratory experiment, using an anaerobic-aerobic activated sludge process, which consisted of an anaerobic reactor, an aerobic reactor and a ultrafiltration membrane module of cross-flow type, was carried out for 3months by using sinthetic wastewater. As the treatment proceeded, soluble organic substances were accumulated in the anaerobic and the aerobic reactors with reaction time. However, the substances decreased gradually from 75 days of reaction time. From the analysis by gel chromatogram, the molecular weights of the substances were estimated about 50,000, 1,300 and 100 by the conversion of the molecular weight of polyethyleneglycol. The oxygen uptake rate of microorganisms and the nitrification rate in the aerobic reactor were decreased. The organic substances influenced the lag time, the maximum growth rate and the maximum biomass of E.coli.

안동시 생활폐기물 관리 현황과 실태 조사

김태동 安東大學校 安東地域社會開發硏究所 1999 安東開發硏究 Vol.10 No.1

본 논문은 향후 안동시 지역에서 발생하는 생활폐기물의 효율적 처리·처분을 위한 대책을 수립하는데 기초자료를 제공하는 것을 목적으로 안동시에서 발생되는 생활폐기물의 관리 현황을 살펴봄과 동시에 시민들의 실질적인 쓰레기배출 형태를 설문조사 및 실태조사를 통하여 분석하였다. 안동시 생활쓰레기의 발생량은 감소추세에 있으나, 매립지 확보의 어려움 등을 고려하여 향후 재활용과 소각의 비중을 높여야 할 것으로 생각된다. 이를 위해서는 재활용품 및 음식물쓰레기를 철저하게 분리하는 시스템을 구축하여야 하고 생활쓰레기에 대한 통합적이고 효율적인 처리기술의 개발과 폐기물의 자원화를 촉진하며 나아가 매립장 확보를 위한 주민의 참여의식과 유대감을 형성해 나가야 할 것이다. 설문 및 실태조사 결과, 종량제 봉투의 적정한 가격과 봉투의 질적 개선이 요망된다. 또한 아직도 많은 시민들이 불법배출을 하고있어 쓰레기 처리에 대한 시민 개개인의 의식전환을 위한 시민 홍보의 필요성과 안동시의 보다 적극적인 재활용 대책의 필요성이 요구된다. 안동시의 재정적 부담을 해소하고, 쓰레기 감량을 촉진시키며 나아가, 규격봉투 비용부담에 따른 불법투기 등을 방지하기 위한 대책으로, 현행의 종량제와 함께 환경세 도입이 적극 검토되어야 할 것이다.

CHARACTERISTICS OF SOLUBLE ORGANIC SUBSTANCES ACCUMULATED IN THE ANAEROBIC-AEROBIC ACTIVATED SLUDGE PROCESS WITH CROSS-FLOW ULTRAFILTRATION

김태동 安東大學校 工業技術硏究所 1998 공업기술연구논문집 Vol.5 No.1

To elucidate the characteristics of soluble organic substances, which accumulate in the anaerobic-aerobic activated sludge process with cross-flow ultrafiltration, a continuous wastewater treatment using synthetic wastewater was conducted in a bench-scale experimental apparatus. A cross-flow type ultrafiltration membrane module was used for solid-liquid separation step. As the treatment proceeded, soluble organic substances which included non-biodegradable substances have contained substances which were released as a result of cellular disruption, and metabolites produced by microorganisms. These substances effects to decrease the oxygen uptake rate and nitrification rate of the activated sludge. At the sane time, the lag time, the maximum growth rate and ultimate biomass concentration in the growth curve of E. coli. were affected by theses substances.

리드용 와이어의 평탄도 측정 방법에 따른 비교 분석

김태동,김진호 한국기계기술학회 2019 한국기계기술학회지 Vol.21 No.3

Recently, the demand of wire quality improvement has been increasing due to the development of the textile market, and the demand for round type flat wire having superior performance compared to the existing reed wire is also increasing greatly. The round wire requires equal spacing and precise alignment of the wire at reed knitting. So, there is a need for a method for measuring the flatness of Reed in real time. In this paper, it is shown how the contact and non - contact methods for the flatness of Reed used in a power loom are easy to measure in real - time process. The contact-type method provides excellent measurement accuracy and precision because it directly touches the object. The non-contact type does not touch the object, so it does not scratch the surface, and the result can be obtained faster than the contact type. Contact type measuring device was used as contact type and laser displacement sensor was used as non - contact type. It was confirmed that the measurement method using the laser displacement sensor (non-contact type) is suitable for the real time process.

韓日 兩國經濟에서의 資産價格變動과 거품의 相互比較

金泰東 成均館大學校 韓國産業硏究所 1993 韓國經濟 Vol.20 No.1

This paper analyzes the movement of stock and land prices in Korea and Japan and tries to identify the bubble component in their asset prices. It also attempts to find the probable causes of the economic slowdown in both countries from the instability of the asset markets. As shown in Table 1 and 2, Japan, in recent years, has experienced much wilder fluctuations in asset prices than any other industrialized country. However, the Korean case has been even more severe. The ratio of total land value to annual GDP in Korean went up as high as 9.4 in 1989, while the ratio in Japan rose up to 5.6 in 1990. Compared with the corresponding figures in other industrialized countries, which are less than 2 in most cases, these countries have much higher land prices. It is probably because the higher growth rate of GDP and the lower interest rate make the fundamental value of their land more expensive. However, a careful analysis shows that fundamental factors can explain only a part of the land price differences across the countries. As Noguchi(1992) pointed out, at least for the land prices of the Tokyo and Osaka regions in Japan, the existence of a significant bubble component can be shown. It is also verified by the actual sharp decline of the land price in those regions after 1991. In the Korean case, the size of the bubble in the land price seems to be even bigger. Using the PER(Price Earning Ratio) data in the stock market to obtain the information on the fundamental factors in two countries, we found that the ratio of total land value to GDP in Korea should be less than one quarter of the Japanese ratio if the share of rental income in GDP were equal in the two countries. On the other hand, the stock price index has fallen approximately by the equal proprotion in Japan and Korea. The movement in the stock market shows surprisingly close resemblance each other, which suggests that the size of the bubble in the stock price was also about the same in the two countries. Finally, the breakdown of the bubble in the prices of stock and land made economic slowdown harsher and more prolonged in both of the two countries through the negative impacts on private consumption and investment.

중추신경게 질환의 Naloxone 치료 효과에 대한 임상적 연구

김태동,김윤 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1

Naloxone-HC1 is the first pure narcotic antagonist to be discovered and it is used for the treatment of narcotic overdose and reversal of narcotic analgesia. Recently, the effect of NaloxoneHCl on the CNS lesion was approved by laboratory and clinical studies. This study was intended to evaluate the clinical effect of Naloxone-HC1 on the CNS lesion and was performed with 129 patients of the CNS lesion, who were admitted and managed at the Department of Neurosurgery of Chungnam National University Hospital from Mar. 1985 to Apr. 1987. The results were as follows; 1. In the patients with spontaneous intracerebral hematoma, the percentage of improvement were 63% in Naloxene-HC1 treated group and 42% in control group. In the patients with brain contusion, it were 64% in Naloxone-HC1 treated group and 77% in control group. But, when excluding the patients below 7 points of GCS, the percentage of improvement were 70% in Naloxone-HC1 treated group and 50% in control group of the patients with spontaneous intracerebral hematoma. In the patients with brain contusion, it were 100% in Naloxone-HC1 treated group and 80% in control group. 2. In the patients with spinal cord injury, the improvement was noted in all cases with incomplete motor paralysis, but the cases with complete motor paralysis were not improved without significant relation to Naloxone-HCI. 3. There was no significant differentiation in the average time of improvement between Naloxone-HC1 treated group and control group.

오존을 이용한 Parathion과 THMs 의 제거

김태동,나미정,유건상 안동대학교 환경연구소 2001 환경연구 Vol.1 No.-

It is well known that biological treatments are not able to remove all organic compounds, especially if they are toxic and refractory in the environment, from the contaminated water. Thus, they accumulate in the effluent water, causing an increase in pollution of our natural environment. The present study is directed towards the removal of non-biodegradable organics like parathion and THMs using ozone that are noticeable recently in the third treatment of contaminated water. In order to evaluate performance of ozone treatment, such parameters as the concentration of ozone, reaction time, the concentration of organics of interest, and the change in pH were examined. At the same time, the removal efficiency of above-mentioned organics by hybrid O_(3)/activated carbon treatment was also investigated, comparing with O_(3) treatment alone. In conclusion, the removal efficiency of parathion and THMs by O_(3) treatment alone was approximately 70% and less than 10%, respectively. Whereas, O_(3)/activated carbon treatment represented higher efficiency, showing almost 100% and 95%. It proves that hybrid O_(3)/activated carbon treatment for the removal of organics that are resistant to the environment is superior to ozone treatment alone.

한국 재무회계 사례논문의 연구동향

김태동,배창현 한국회계학회 2019 회계저널 Vol.28 No.2

This study analyzed research trends in financial accounting case studies between 2008 and 2017. The four key results of the analysis were as follows. First, Accounting Journal published the most case studies as a proportion of total articles (77%) and published the highest proportions in 2010 and 2011. The former result was believed to be the result of Korean Accounting Journal’s editing policy which emphasizes delivering practical insight into business issues. Second, Seoul National University had 48 participating authors, the highest of all institutions publishing pieces in the sample. Third, commercial companies were the main subject of these case studies and research was continuously conducted each year. Fourth, IFRS case studies were mostly conducted on commercial companies in addition to several other financial and public institutions. There was not a great deal of diversity in the subjects examined for each topic. It is hoped that the results of this study will clarify the current status of financial accounting case studies and their future direction. It is expected that researchers and academic societies will show continued interest in developing case study methodologies to be used in future studies. 본 연구는 재무회계 사례논문의 연구동향을 분석하는데 연구목적이 있다. 분석기간 은 2008년부터 2017년까지이며, 분석대상 학술지는 경영학연구, 회계저널, 경영교육연구, 회계연구, 회계정보연구, 국제회계연구로 선정하였다. 주된 분석결과는 다음과 같다. 첫째, 재무회계 사례논문의 학술지별 분포는 회계저널에서 가장 높은 비율(77%)을 나타냈으며 다른 연도에 비해 2010년과 2011년에는 더 높게 나 타났다. 이는 실무적인 시사점을 장려하는 회계저널의 편집방침에 따른 결과로 판단되며, 시기적으로도 IFRS 도입과 관련된 연구의 영향으로 판단된다. 그리고 저자 분석의 경우, 2~3인의 공동연구가 높게 나타났으며 단독연구도 활발히 진행된 것으로 파악된다. 둘째, 연구자 특성(소속, 저자 수, 저자 직위)의 경우 서울대학교에서 가장 많은 48명의 저자가 참여한 것으로 분석되었다. 그리고 게재논문의 저자 직위를 주저자(1저자 및 교신저자)와 공동저자로 구분하여 살펴보면, 제1저자 및 교신저자의 경우 교수 30%, 박사과정 20%, 조교수 19%, 부교수 8%로 나타났으며, 공동저자의 경우 박사과정 34%, 교수 23%, 회 계사 8% 순서로 나타났다. 셋째, 분석대상 및 학술지(또는 연도별) 분포의 경우, 주된 분 석대상은 “상기업”으로 나타났으며, 연도별로 지속적인 연구가 수행되고 있음을 확인할 수 있다. 그리고 세부주제 및 학술지(또는 연도별) 분포의 경우, IFRS 관련 연구가 가장 높 게 나타났는데, 이는 2011년 새로운 회계기준(K-IFRS)의 도입으로 인한 기업의 영향에 대해 다각적으로 분석한 결과에 기인한다. 또한, 회계처리 및 분식회계에 대한 연구도 지속 적으로 이루어진 것으로 나타났다. 이는 학계의 오랜 관심사이기도 하며 기업의 이익에 영 향을 미치거나 상장폐지에 이를 수도 있는 중요한 이슈이기 때문에 꾸준히 관심을 갖고 연 구가 수행된 것으로 해석된다. 끝으로 연구주제와 분석대상을 비교하였는데, IFRS 주제는 주로 상기업을 분석대상으로 연구가 많이 진행된 것으로 파악되며 일부 금융기관과 공공기 관 연구도 수행된 것으로 조사되었다. 한편, 연구주제에 따른 분석대상의 다양성은 확보되 지 못하고 있는 것으로 파악된다. 본 연구의 분석결과를 통해 재무회계 사례논문의 현황을 파악하고 추후 사례연구의 방향 내지는 실증연구에 도움이 되길 기대한다. 그리고 사례연구 방법론에 대하여 연구자 및 학 회의 지속적인 관심이 이어져서 다양한 연구주제로 후속 연구에 활발하게 활용될 수 있기 를 기대한다.

출산율 개선을 위한 관련법 연구

김태동 사회복지법제학회 2017 사회복지법제연구 Vol.8 No.2

우리나라 여성의 합계출산율은 2016년 1.17명으로 OECD 가입국 중 가장 낮은 통계수치이다. 이러한 출산율의 감소는 생산인구의 감소, 국가 성장에 악영향을 준다. 이에 다음과 같은 개선점을 고려해야 한다. 첫째, 현행 육아휴직의 1년 이내인 기간에 대한 조정이 필요하다. 육아휴직 기간을 공무원 수준으로 증가할 필요가 있다. 또한 육아휴직을 사용할 때 별도의 신청없이 자동적으로 육아휴직을 사용할 수 있도록 개정할 필요가 있다. 둘째, 휴직에 대한 소득대체율의 인상이 매우 절실한 상황이다. 현재 근로자의 소득대체율은 고용보험법 제95조에 의하여 40%이다. 그러나 40%의 소득대체율로는 육아휴직을 사용하는 유인제도로서 매우 미흡하다. 높은 소득대체율은 출산율 상승에 큰 요인이 되므로 소득대체율을 단계적으로 인상하는 고용보험법 개정이 필요하다. 또한 상한액과 하한액에 대한 조정도 동시에 개선해야 출산율에 긍정적으로 영향을 미칠 수 있을 것이다. 셋째, 소득대체율을 인상하는 법개정에 따라 재원확보를 고려해야한다. 우리나라의 경우는 고용보험에서 육아휴직급여가 지원되고 있다. 실업급여는 본래 취지대로 실업자 구제 목적을 위하여 사용하여야 하고, 실직급여, 출산전후휴가급여, 육아휴직급여의 재편성을 고려해야 하며, 재원에 대한 국가의 적극적인 지원을 통한 출산율 개선이 절실하다. The total fertility rate in Korea is 1.17 in 2016, the lowest among the OECD members. The decrease in these fertility rate adversely affects the decrease in production population and the growth of national growth. Therefore, the following improvements shall be considered. First, Parental leave is currently a year away, but it needs to be increased, on the level of parental leavel. Also, it is necessary to revise parental leave automatically without having to apply for paternity leave when taking advantage of parental leave. Second, the income replacement rate of parental leave is very urgent Worker’s the income replacement rate is 40% by the employment insurance act article 95. But As the income replacement rate, 40 percent are not enough, which is very poor policy of the wake of the fertility rate. High the income replacement rates are a major factor in raising fertility rate. Thus, a revision of employment insurance act is needed to phase out the income replacement rate. Also, adjustments to both the upper and lower levels should be improved simultaneously to positively affect the fertility rate. Third, confirmation of financial resources should be considered to increase the income replacement rate. Benefits of parental leave are supported in employment insurance in Korea. Unemployment benefits should be used for purposes of unemployment relief purposes, for purposes of the original purpose and It should be considered revision of unemployment benefit, maternity leave benefit, parental leave benefit. It is urgent to improve the fertility rate through active support for the nation's finances.

實事求是思想과 새마을精神

金泰東 전북대학교 1986 全國大學生學術硏究發表論文集 Vol.11 No.-