보문 : 식물-광물 혼합제가 부영양 수체의 수질, 플랑크톤 및 microcystin-LR에 미치는 영향

김백호 ( Baik Ho Kim ),이주환 ( Ju Hwan Lee ),박채홍 ( Chae Hong Park ),권대률 ( Dae Yul Kwon ),박혜진 ( Hye Jin Park ),문병천 ( Byeong Cheon Mun ),문병진 ( Byeong Jin Mun ),최인철 ( In Chel Choi ),김난영 ( Nan Young Kim ),민한나 한국하천호수학회(구 한국육수학회) 2011 생태와 환경 Vol.44 No.4

We examined two reservoirs (lnkyung res. and Joongang res.) and two streams (Kyungan str. and Jecheon str.), all of which were eutrophic, during the 2010 warm season, to evaluate the water quality improvement activity (WQIA) of plant-mineral composite (PMC), which was previously developed to control suspended solids, including cyanobacterial bloom (Kim et al., 2010). We simultaneously measured both solid (S-MCLR) and dissolved microcystin-LR (D-MCLR), before and after PMC treatment, in the Joongang reservoir. Taking water body size and volume into account, we conducted the whole-scale experiment in the Inkyung reservoir, and mesocosm-scale experiments in the other three systems. The WQIAs of PMC were found to be comparatively high in SS (70~81%), TP (75~91%), BOD (65~91%), Chl-a (88~98%), phytoplankton(84~92%) and zooplankton(68~88%), except for the Kyungan stream, which was below 45% in all parameters. After PMC treatment, the concentrations of both SMCLR (47%) and D-MCLR (96%) decreased within two days, suggesting a mitigation possibility of hazardous chemicals such as agrochemicals and endocrine disrupters in the aquatic ecosystem. Our results collectively indicate that PMC is a useful agent to control suspended solids, including nuisance cyanobacterial bloom and their exudates, in an undisturbed water system with a long residence time.

Higgins 모형을 활용한 외식기업의 재무자료 분석과 성장률에 관한 연구

주병철(Byeong Chel Ju),김성수(Seong Su Kim),전효진(Hyo Jin Jeon) 한국관광연구학회 2015 관광연구저널 Vol.29 No.3

This study compared and verified the food service companies and the manufacturing industry using SGR model proposed by Higgins (1997, 1981). According to the analysis,, first, they were maintaining AG and IRG with no average differences and yet, as for TG, the increment value duty of tangible assets, the food service companies came up with 12.1% while the manufacturing industry presented 7.45%, and that was a proof for the former `s having a 1.6-times greater real investment. Second, according to the analysis on IGR, the food service companies would have 7.08% of the maximum annual growth without any fund support from outside while the manufacturing industry will be able to grow up to 4.76% every year. Third, the analysis on SGR confirmed that the food service companies had 1.3-times higher one than the manufacturing industry. Fourth, the ANOVA analysis on SGR and the potential growth rate reported that the food service companies had a 3.45-times higher one comparing to this 2.6-times higher difference of the manufacturing industry, and they were observed to be higher than the potential growth rate. In the light of that, the study confirmed that the food service companies had more confident growth potential. In conclusion, comparing to the manufacturing industry, the stable financial structure and the efficient sales activities will be a foundation for the survival and the growth of the food service companies.

독일의 사례를 통해 본 농업인재해 보장체계 구축 방안

민병욱 ( Byeong Wook Min ),김효철 ( Hyo Chel Kim ),이경숙 ( Kyung Suk Lee ) 한국농촌지도학회 2011 농촌지도와 개발 Vol.18 No.3

The purpose of this study is to look at the case of the German compensation system for farmers` accidents and to build a basic scheme in our country`s compensation system for farmers` accidents. When you view examples of Germany, the social insurance scheme for farmers accidents in korea should be design as an independent institution from the existing industrial accident insurance, and it comes to relationships with other social insurance system, preferably with complementary personalities. A general rule of the compensation system applies to all farmers in principle but the coverage limits part-time farmers. Financial burden consists of the mix of insurance premium and state aid. The type and level of benefits is similar to the current industrial accident insurance, which give priority to places on economic security for keeping farmworks, such as cost for using temporary farmers, rather than income loss. In terms of financial system, pay-as-you-go system would be better because of immediate payment with the introduction of the compensation system. The compensation system might be managed and administrated by the existing nationwide organization. Of course, for operating of system review and further research on the technical details such as premium issues and funding problems of government support, the exact classification of the target coverage, premiums based on estimated income for the farmers` estimation, the exact statistical data on the accumulation of agricultural disaster is needed.

Co-digestion of Sewage Sludge and Human Waste

( Changmin Lee ),( Byeong-chel Kim ),( Ji-hun Nab ),( Jae Young Kim ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-

Low anaerobic degradability of sewage sludge has raised demands for co-digestion with other organic wastes such as food waste, livestock manure and agricultural by-products. Human waste (HW) captured from septic tanks also can be used as a co-digestion substrate through supplying of additional carbon and nutrients. In this study, the possibility of sewage sludge and HW codigestion was investigated. The specific objectives were to 1) compare CH4 generation of primary sludge (PS), excess sludge (ES), HW and their mixtures by biochemical methane potential (BMP) test; 2) identify synergistic co-digestion effects on their biodegradability; 3) elucidate the co-digestion effects based on the changes of physicochemical characteristics by mixing. The test ratios between PS, ES and HW were R1=40:60:0, R2=28:43:30, R3=24:34:42, R4=18:26:56, R5=15:23:62, R6=100:0:0 (PS control), R7=0:100:0 (ES control), R8=0:0:100 (HW control) by dry wt., respectively. The maximum mixing ratio of HW (R5) was determined based on the wet wt. ratio between PS, ES produced in a WWTP, Seoul and HW gathered in the WWTP. The BMP tests were conducted by using the same ratio of substrate to inoculum (1:2 by dry wt.) meaning that the same amount of volatile solids (VS) was added to all test assays. As a result, with the increase of HW ratio, CH₄ generation was increased. This is because the amount of carbon in the same VS of substrate was increased. CH₄ potentials were R1: 174 44, R2: 226 2, R3: 250 16, R4: 268 15, R5: 262 9, R6: 158 1, R7: 164 38, R8: 299 54 mL/g-VS. For CH₄ generation dynamics, codigestion did not affect the lag phase of CH₄ generation. The synergistic effect of co-digestion on the biodegradability, which is the ratio of maximum CH₄ generation to theoretical CH₄ potential, was identified for the mixing assays of PS, ES and HW (R2 - R5) but not for the mixing assay of PS and ES (R1). When the HW was mixed, biodegradability was enhanced by 8 - 16% compared to the weighted average considering the mixing ratio of raw samples. In conclusion, HW can be utilized as a substrate for the co-digestion of sewage sludge by replenishing carbon to increase CH₄ production. And C/N ratio can be balanced to enhance the degradability of the mixed substrate rather than each substrate.

동물원 사자의 Clostridium perfringens에 의한 장독혈증 감염증례

김용환 ( Yong Hwan Kim ),나호명 ( Ho Myung Na ),박성도 ( Sung Do Park ),고바라다 ( Ba Ra Da Koh ),김태순 ( Tae Sun Kim ),윤병철 ( Byeong Chel Yoon ),최종욱 ( Jong Woog Choi ),이삼수 ( Sam Soo Lee ) 한국동물위생학회 2005 한국동물위생학회지 (KOJVS) Vol.28 No.3

A 3-year-old male lion at Gwangju Uchi Zoo presented for acute onset of haemorrhagic diarrhea and died. The lion showed reddening of the anus as the cause of haemorrhagic enteritis. Necropsy revealed a severe haemorrhagic colitis. Grossly, lesions included icterus, excess pericardial fluid, dark kidneys, and an enlarged, friable liver. The intestines were flaccid, thin-walled, dilated, and gas-filled. The spleen was enlarged and pulpy because of congestion. Most of organs were rapidly postmortem autolysis. Histopathologically, the intestines were edema and transient leukocyte infiltration of the lamina propria, followed by necrosis. Especially of the intestinal submucosa was edematous, haemorrhagic, or filled with leukocytes. The crypts remained intact or dilated. C perfringens was isolated from a lion at bloody feces, and identified C perfringens type A, confirming the presence of C perfringens α-toxin by PCR. These results were suggested that the case were diagnosed as enterotoxicosis in the lion. More studies are needed on lion enterotoxemia, especially of its etiopathogenesis, in order to develop more efficient prevention for this disease.

청년창업자의 동기요인이 창업 자기효능감과 창업의도에 미치는 영향

김경은(Kyoung-Eun Kim),주병철(Byeong-Chel Ju) 한국산업경제학회 2018 산업경제연구 Vol.31 No.5

본 연구는 창업에 있어서 실패에 대한 두려움을 청년창업자가 덜 느낀다는 선행연구를 바탕으로 개인 및 사회적 동기요인들을 살펴보았다. 이에 본 연구에서는 청년창업자의 창업 자기효능감 및 창업의도에 미치는 동기요인들로 자아실현욕구, 자율지향욕구, 관리지향욕구를 발견하였다. 또한 창업실패에 대한 두려움이 동기요인들과 창업 자기효능감과의 관계에서 조절변수로서 어떠한 역할을 하는지 검증하였다. 연구결과는 다음과 같다. 첫째, 창업 자기효능감에 미치는 변수로서 자아실현욕구와 자율지향 욕구가 유의한 영향을 미치는 것으로 나타났다. 둘째, 창업 자기효능감이 창업의도에 긍정적인 영향을 미치는 것으로 나타났다. 셋째, 자아실현욕구와 창업 자기효능감과의 관계에서 창업실패에 대한 두려움의 조절영향은 낮은 집단보다 높은 집단에서 더욱 크게 나타났다. 이는 자아실현욕구가 창업실패에 대한 두려움을 극복하는 또 다른 동기요인이 되는 것이다. 주요 시사점으로는 실패에 대한 두려움은 창업자가 두려움 극복하기 위한 동기 부여를 찾으려는 긍정적인 효과를 확인한 것이다. 즉 자아실현욕구가 두려움을 극복하는 동기부여가 되는 것으로 향후 대학생들의 창업 교육의 중요성을 입증하였다. This study examined the personal and social motivation factors based on the previous research that young entrepreneurs feel less fear of failure in start-up. In this study, we found desire for self-fulfillment, desire for autonomy, and desire for management competence as motivation factors of entrepreneurial self-efficacy and entrepreneurial intention of young entrepreneurs. In addition, we examined the role of the fear of entrepreneurial failure as a moderating variable in the relationship between motivation factors and entrepreneurial self-efficacy. The results of the study are as follows. First, desire for self-fulfillment and desire for autonomy have a significant influence on the variables of the self-efficacy. Second, the self-efficacy of entrepreneurs has a positive effect on entrepreneurial intention. Third, In the relationship between desire for self-fulfillment and entrepreneurial self-efficacy, the moderating effect of fear of failure was greater in the higher group than the lower group. This is another motivation for desire for self-fulfillment needs to overcome the fear of start-up failure.

BIM 견적 작업 생산성 향상을 위한 업무 환경 조성에 관한 연구

김성아,박권,송병섭,최철호,진상윤,Kim, Seong-Ah,Park, Gweon,Song, Byeong-Seob,Choi, Chel-Ho,Chin, Sang-Yoon 한국건설관리학회 2016 한국건설관리학회 논문집 Vol.17 No.1

BIM 적용으로 인해 비용절감 효과를 얻은 사례가 많은 학회, 보고서, 세미나 등을 통해 보고되고 있다. 이러한 사례에서는 BIM을 적용하여 재작업 및 재시공방지와 같은 직접적인 비용 절감 효과를 얻을 수 있다고 언급하고 있다. 또한 작업시간 단축, 업무 생산성 향상과 같이 비용으로 환산할 수 없는 효과도 존재한다. 국내외 BIM 사용자들은 BIM 적용으로 인한 비용절감에 관한 잠재적인 가치가 있다고 판단하고 있다. 그러나 아직까지 국내에서는 BIM 적용으로 인한 뚜렷한 경제적 가치(ROI)가 드러나지 않고 있으며, 국내 BIM 사용자들도 경제적 성과에 대해서 부정적인 반응을 보이고 있다. 따라서 본 연구에서는 경제적 가치로 환산하기 어려운 작업시간, 생산성 향상과 같은 BIM 적용 효과를 진단하고, BIM 적용 효과를 얻기 위해서 수반되어야 하는 것들은 무엇인지 살펴보고자 한다. 그리고 본 연구는 건설 프로젝트 생애주기 동안 다양한 분야에 적용될 수 있는 BIM의 적용효과를 견적분야를 대상으로 조사하였다. 본 연구는 동일한 프로젝트를 대상으로 기존 견적과 BIM 견적에서의 작업시간을 비교하였다. 그 결과 기존 견적과 같이 BIM 견적에서 작업속도 및 생산성을 향상시키기 위해서는 실무자들의 BIM 교육, 모델링 작업 기준, BIM 연동 내역서가 필요한 것으로 드러났다. Many cases have mentioned the effect by applying BIM on the media such as at conferences, workshops, reports, ect. These cases reported that costs could be saved directly by prevention the need to re-do and reconstruct caused by using BIM. BIM users mentioned that using BIM has potential value in saving costs. The benefits of the BIM include intangible value that cannot be estimated in costs, such as reducing work time and improving productivity. However, the financial value of using BIM, such as Return on Investment, has not yet been exposed, and BIM users have a negative view of the financial value of BIM in Korea. Therefore, this study has researched the effects of applying BIM on construction estimate services in view of business productivity, not finance. This study compared the traditional and BIM based estimation, and verified the effect of estimating BIM through work sampling. This study investigated a precondition for getting the effects of BIM based estimation. The results show a need for BIM education, 3D Modeling standards, and database on quantity in order to improve product ivity and reduce work time on BIM based estimation

커피 브랜드 PPL광고의 수용태도가 소비자 브랜드 인지도에 미치는 영향에 대한 연구 -관여도 조절효과를 중심으로-

전효진 ( Hyo Jin Jeon ),김이연 ( Yi Yeon Kim ),주병철 ( Byeong Chel Ju ) 한국관광산업학회 2015 Tourism Research Vol.40 No.3

본 연구는 커피 전문점 브랜드 PPL광고의 수용태도가 커피브랜드 인지도에 어떠한 영향을 미치는지, 그리고 관여도의 조절효과 여부를 알아보고자 하였다. 최근 커피시장이 커지고 소비자의 수요가 늘어나면서 커피브랜드 광고가 다양해지면서 특히 TV드라마 속 커피브랜드 PPL이 빠르게 증가하고 있는 실정이다. 커피관련 기업들은 자사의 상품이나 브랜드를 간접적으로 영화나 TV드라마를 통해 노출함으로써 브랜드 인지도를 상승시킬 홍보수단으로 PPL을 이용하고 있다. 이에 본 연구에서는 커피 전문점 브랜드 PPL광고의 수용태도가 커피브랜드 인지도에 미치는 영향, 그리고 수용태도와 브랜드 인지도 사이에서 관여도의 조절효과를 통해, 세 변수간의 영향관계를 알아보고자 한다. 본 연구의 결과를 요악하면 다음과 같다. 커피 전문점 브랜드 PPL광고의 3가지 수용태도인 인지적 태도, 감정적 태도, 행동적 태도 중, 행동적 태도만이 브랜드 인지도에 유의한 영향을 미치는 것으로 나타났다. 즉, PPL광고를 받아들이는 인지과정, 주관에 의한 평가를 내리는 감정과정까지 진행되었다고 해도 행동과정까지 이어지지 않으면 브랜드 인지도 상승을 기대하기 어렵다고 해석할 수 있다. 관여도에 관한 측정은 소비자 개인의 특성요인, 제품 특성요인, 상황 특성요인 등 3가지 관여도 중 소비자 개인의 특성요인을 바탕으로 진행하였으며, 세 가지 수용태도 중 감정적 태도에만 조절작용을 하는 것으로 나타났다. 이상의 연구 결과를 토대로 하여 이끌어 낼 수 있는 시사점으로는 먼저 커피전문점의 PPL광고를 제작 시, 제품보다는 간판이나 로고, 브랜드 슬로건 등이 부각되도록 해야 광고효과가 극대화 된다는 점을 들 수 있다. 또한 커피 전문점 브랜드에서 소비자의 수용태도를 바탕으로 브랜드 인지도를 상승시키기 위해서는 커피 전문점 브랜드의 PPL광고를 통하여 받아들이는 수용태도 중 행동적 태도가 필요하며, 관여도는 감정적 태도에만 조절작용을 한다는 것을 알 수 있다. 브랜드 인지도 특히 행동적 태도를 이끌어내기 위해 소비자가 PPL광고와 관련지어 직접 참여할 수 있는 체험 마케팅 등을 적극 활용할 필요가 있다고 볼 수 있다. This study aims to examine how individuals`` maternal attitude toward PPL(Product Placement) affects their coffee brand awareness. Recently, companies attempt to improve familiarity of their brand and products to the consumers by exposing the products indirectly in films or TV shows. In last few decades, as the customer needs grow up for the coffee market, coffee brand commercials have been increased. Especially, PPLs in TV series have been grown up dramatically. Therefore, this study was designed to study the relationship between individuals`` maternal attitude toward, namely emotional attitude, recognition attitude, and behavioral attitude, and coffee brand awareness. Also, the moderating effect of involvement in the relationship was also examined. The results are as follows. First, the results show that among three types of maternal attitude, behavioral attitude only had significant effect on brand awareness while other did not have significant effect. This implies that brand awareness will not be increased unless customers arrive in the behavioral stage. Second, the results show that involvement only moderated the relationship between emotional attitude and brand awareness. Based on the study result, the conclusion is that increasing the positive reputation or the brand awareness of coffee brand by brand PPL is essential business activity to arouse customer’s purchase needs. In particular, among three types of maternal attitude, behavioral attitude should be more highlighted to build a good brand awareness.

소비가치에 따른 베이커리 선택속성이 만족도에 미치는 영향

이상진(Sang-Jin Lee),김성수(Seong-Su Kim),주병철(Byeong-Chel Ju) 한국조리학회 2016 한국조리학회지 Vol.22 No.3

하수처리시설 방류수 수질기준에 확률개념 도입 타당성 분석

박규홍,강병준,김재철,최익훈,Park, Kyoo-Hong,Kang, Byeong-Joon,Kim, Jae-Chel,Choi, Ik-Hun 대한상하수도학회 2010 상하수도학회지 Vol.24 No.3