재무분석가의 낙관주의가 walkdown에 미치는 영향과 예측어려움의 조절효과

곽상진(Kwak, Sang-Jin),조용언(Cho, Yong-Eon),하순금(Ha, Soon-Gum) 한국경영교육학회 2020 경영교육연구 Vol.35 No.5

[연구목적] 본 연구는 재무분석가의 낙관주의 동기 유인이 예측 walkdown에 미치는 영향을 인지심리적 측면에서 검증하고 예측어려움이 높을수록 재무분석가의 낙관주의 동기유인이 예측 walkdown을 보다 강화하는지를 분석하였다. [연구방법] 이를 위해 재무분석가의 낙관주의 동기 유인과 예측어려움과 관련된 국내외 선행연구에 관한 문헌을 바탕으로 실증분석에 필요한 가설을 설정하였다. 가설 검증에 사용된 표본은 2011년부터 2016년까지 유가증권 시장의 상장기업 중 820개의 기업-연도표본이다. 재무분석가 이익예측자료와 재무자료는 Kis-Value에서 수집하였다. 수집된 자료를 바탕으로 Bradshaw et al.(2016)가 제시한 연구모형에 대한 회귀분석을 실시하였다. [연구결과] 본 연구의 분석결과는 첫째, 재무분석가의 낙관주의 동기 유인이 클수록 예측walkdown이 커지는 것으로 나타났다. 둘째, 예측어려움이 높을수록 재무분석가의 낙관주의 동기 유인이 예측walkdown을 강화하는 것으로 나타났다. 이는 재무분석가의 지향성 있는 결론에 대한 낙관주의 동기 유인이 클수록 매출액과 영업이익의 walkdown이 커지며, 이 과정에서 예측어려움이 조절작용을 하고 있음을 의미한다. [연구의 시사점] 본 연구는 낙관적 예측 편의가 존재하는 재무분석가의 보고서를 이용하는 시장참여자들이 합리적 판단을 할 수 있는 근거를 제공하고 재무분석가의 낙관적 예측편의에서 파생되는 시장의 부정적인 영향을 사전에 차단할 수 있는 정책수립의 근거를 제공하는데 시사점을 준다. [Purpose] This study examines the pattern of analysts’ forecasts within a fiscal year, which begins with optimism and declines as the earnings announcement date approaches, and also does that one factors, forecasting difficulty, interact with analysts’ incentives for optimism to induce cross-sectional variation in the steepness of forecast walkdown. [Methodology] As follows are univariate t-test and multivariate regressions results from a sample of 820 firm-years listed in Korea Exchange between 2011 and 2016. [Findings] The general association between analysts’ incentives for optimism and forecast walkdown is supported by empirical evidence. In addition, it is supported that as difficulty is higher, forecast walkdown becomes steeper. [Implications] This result means that analysts begin with optimism to react to motivation for a directional conclusion at the beginning of the year, adjust downward their forecast to react to motivation for accuracy as the earnings announcement date approaches. In addition, this means forecasting difficulty is in the highest at longer forecast horizons, it declines with the release of information during the year. Then, based on Kunda’s(1990) work, the biased accessing of information to support optimistic forecasts declines, leading to a forecast walkdown.

구강외과 수술용 스텐트 기반 영상유도 수술 시스템의 개발

이우진,김대승,이원진,이삼선,최순철,허민석,허경회,김명진,이지호 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.3

Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites. Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality. Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites. Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites. (Korean J Oral Maxillofac Radiol 2009; 39 : 149-56)

충수염의 임상적 확신도에 따른 초음파의 유용성 : Correlation with Level of Initial Clinical Diagnostic Confidence

송순영,김삼수,구장홍,이은자,이종인,정진호,김진영,오화은,문원진,한헌 대한초음파의학회 2002 ULTRASONOGRAPHY Vol.21 No.3

채소 기르기 활동이 만 4세 유아의 과학 관련태도 및 과학적 탐구능력에 미치는 영향

김진주 ( Jin Ju Kim ),오은순 ( Eun Soon Oh ) 한국Montessori교육학회 2009 실천유아교육 Vol.14 No.2

본 연구에서는 채소기르기 활동이 만4세 유아의 과학관련태도 및 과학적 탐구능력에 미치는 영향에 대해 알아보았다. 연구의 대상은 대전광역시 중구에 소재한 B유치원의 만 4세 연령 학급 유아 50명으로, 25명은 실험집단으로 채소 기르기 활동을 실시하고 25명은 통제집단으로 하였다. 본 연구의 결과는 다음과 같다. 첫째, 채소 기르기 활동은 만 4세 유아의 과학관련태도 향상에 긍정적인 영향을 준다. 과학관련 태도의 하위영역별로 살펴보면, 채소기르기 활동은 흥미의 요소 중 과학에 대한 흥미, 과학학습에 대한 흥미, 과학과 관련된 직업에 대한 흥미, 과학에 대한 불안에 긍정적인 영향을 주었으나, 과학과 관련된 활동에 대한 흥미에는 긍정적인 영향을 주지 않았다. 과학적 태도에서는 호기심, 비판성., 협동성, 자진성에서는 긍정적인 영향을 주었으나. 개방성, 끈기성, 창의성에서는 긍정적인 영향을 주지 않았다. 또한 과학에 대한 인식에는 전체적으로 긍정적인 영향을 주지 않는다. 둘째, 채소 기르기 활동은 과학적 탐구능력에는 긍정적인 영향을 준다. 구성 요소에 따라 살펴보면, 예측하기. 분류하기, 측정하기, 토의하기에는 긍정적인 영향을 주었으나, 관찰하기에서는 긍정적인 영향을 주지 않았다. The purpose of this study was to examine the effect of vegetable gardening activities for 4-years-old children. For this purpose, this study is focused on learning how effect vegetable gardening activities on 4-years-old children`s science-related attitude and scientific exploration ability. To examine this purpose, the following research questions were investigated: 1. How effects does vegetable gardening activity make on 4-years-old children`s science-related attitudes? 2. How effects does vegetable gardening activity make on 4-years-old children`s scientific exploration ability? The Subjects were fifty children from 2 classes of B kindergarten in Jung-gu, Daejeon. The subject were experimental group consisted of 25 children, while control group consisted of 25 children whose average age 4 years 10 weeks. Measuring tools for this study included the science-related attitude test and the scientific process skills test. For the science-related attitude test researcher modified `Instrument for science-related attitude test` which Che,Jung-yeon had made in 2003 on the basis of Kim, Hyo-nam`s Chung, Wan-ho`s Jeong, Jin-Woo`s national assessment system of science-related affective domain in 1999. And for the scientific exploration ability test researcher modified `Instrument for scientific exploration ability test` which Lee, Kyoug-min had made in 2000 on the basis of Martin`s scientific exploration ability evaluation benchmark in 1997. To verify young children`s science-related attitude, after coming up with score`s difference of pretest and posttest of science-related attitude, executed t-test. To verify young children`s scientific exploration ability, after coming up with frequency and percentage of scientific exploration ability, executed X2-test. The result of study are as follows. First, vegetable gardening activity theory exerted positive effects on 4-years-old children`s science-related attitude. there was also a positive effect as the children`s interest in science, desire to learning more about science, science-related jobs and science-related problems issues increased. However, there was no positive effect on science-related activities. Other positive effects on attitudes to science 4 year old children did vegetable gardening, it increased sense of curiosity, ability critically think, ability to cooperate and ability to volunteer. However, there were no effects on the children`s openness to new ideas, patience and creativity. Second, vegetable gardening activity theory exerted positive effects on 4-years-old children`s scientific exploration ability. this had positive effect as the children`s ability to predict, classify, measure, and discuss improved, but there were no effects on their ability to observe.

우리나라 長壽者의 生活 및 意識調査에 관한 硏究 - Ⅴ. 過去의 健康疾病 및 苦痛에 대한 態度 -

최진호(Jin-Ho Choi),변재형(Jae-Hyeung Pyeun),임채환(Chae-Hwan Rhim),양종순(Jong-Soon Yang),김수현(Soo-Hyun Kim),김정한(Jeung-Han Kim),이병호(Byeong-Ho Lee),우순임(Soon-Im Woo),최선남(Sun-Nam Choe),변대석(Dae-Seok Byun),김무남(Mu-Nam 군산대학교 수산과학연구소 1994 군산대학교 수산과학연구소 연구논문집 Vol.1 No.-

The present study was designed to be link a part of the research on the investigation on daily life and consciousness of the longevous people in Korea, and to investigate the health conditions, and the attitude on disease and suffering of longevous people in the past. 1. By the health conditions of longevous people between 40 and 60 years, ""very good"" showed the highest figure of 71.0%, followed by ""ordinary"" (21.6%). Consequently it is found that 92.6% of total longevous people surveyed maintained the good health conditions above ordinary. 2. Of the experiences of disease and/or injury after 60 years of longevous people, ""never"" showed the highest figure of 74.7%, while ""had"" showed the only 22.6% of total longevous people surveyed. 3. Of the details of disease and/or injury after 60 years of longevous people. ""digestive disease"" showed the highest figure of 32.6%. followed by ""apoplexia cerebri & hypertensions""(14.0%) and ""heart disease""(14.0%), and followed by ""respiratory disease""(12.3%). 4. Of the experiences of suffering between 40 and 60 years of longevous people, ""never"" showed 53.7% of total longevous people surveyed, while the frequency of suffering decreased in the order of ""once""(22.7%), ""2 times""(15.8%) and ""3 times""(4.7%). By the details of suffering between 40 and 60 years of longevous people. ""family life"" showed the highest figure of 85.1%, followed by ""business""(10.1%). 5. By the attitude on suffering of longevous people, ""tried to forget soon"" showed the highest figure of 54.2%, followed by ""continuous worried""(23.3%), and followed by ""not worried""(7.2%).

화학기상응축법으로 제조한 Fe-Co 나노입자의 구조 및 자기적 상태에 관한 뫼스바우어 분석

오세진,최철진,권순주,진상호,김병기 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.7

Nine nano-sized Fe-Co particle samples synthesized by Chemical Vapor Condensation(CVC) were analyzed using Mo¨ssbauer spectroscopy, XRD, BET and HRTEM. The synthesized nanoparticles consisted of metallic core and oxide shell structures, and their surfaces were covered with a-FeOOH, γ-FeOOH and Fe_(3)O_(4). The increase of cobalt content enhanced magnetic field. However, when the decomposition temperature and the oxygen content in the carrier gas (Ar) increased, the magnetic field of nanoparticles reduced with decreasing the average particle size. with increasing the vacuum pressure, the average particle size and the magnetic field increased.

텍실브로모보란-메틸 설피드 착물을 이용한 카르복시산의 알데히드로의 부분 환원

차진순,윤말숙,김진억,오세연 嶺南大學校附設 基礎科學硏究所 1985 基礎科學硏究 Vol.5 No.-

The systematic study on the direct partial reduction of carboxylic acids to the corresponding aldehydes with thexylbromoborane-methyl sulfide under the practical conditions (carbon disulfide, room temperature) has been done and also some representative carboxylic acids have been applied to the partial reduction under the optimal reaction condition. The reaction is quite general and the yields of aldehydes are very excellent, especially almost quantitative in aliphaticcarboxylic acids.

우리나라 長壽者의 生活 및 意識調査에 관한 硏究 - Ⅴ. 過去의 健康疾病 및 苦痛에 대한 態度 -

최진호(Jin-Ho Choi),변재형(Jae-Hyeung Pyeun),최재수(Jae-Sue Choi),임채환(Chae-Hwan Rhim),김수현(Soo-Hyun Kim),김정한(Jeung-Han Kim),이병호(Byeung-Ho Lee),우순임(Soon-Im Woo),최선남(Sun-Nam Choi),변대석(Dae-Seok Byun),김무남(Mu-Nam Ki 한국식품영양과학회 1987 한국식품영양과학회지 Vol.16 No.4

우리나라 長壽者의 生活 및 意識調査硏究의 一環으로 長壽者의 過去의 健康, 疾病 및 苦痛에 대한 對處態度 등을 調査ㆍ比較한 結果는 다음과 같다.<br/> 1. 更年期(40~60歲)의 健康狀態가 『대단히 건강했다.』가 71.0%로 가장 많고, 그 다음이 『건강이 보통이었다』가 21.6%로서, 전체 장수자의 91.6%가 보통이상의 건강상태를 유지했다.<br/> 2. 老年期에 접어든 후 疾病이나 負傷을 당한 經驗이 『없었다』고 대답한 경우가 74.7%로 대부분을 차지한 반면 『있었다』고 대답한 경우는 22.6%에 불과했다.<br/> 3. 疾病이나 負傷이 『있었다』고 한 경우의 內譯을 比較하여 보면 『消火器疾患』이 32.6%로 가장 많고, 그 다음이 『腦率中ㆍ高血壓』 14.0%, 『心臟病』 14.0%, 『呼吸器疾患』 12.8%의 순으로 되어 있었다.<br/> 4. 苦痛에 대한 經驗을 調査하여 본 結果, 苦痛이 『없었다』가 55.7%, 『있었다』가 44.3%로 거의 비슷한 傾向이었고, 苦痛에 대한 經驗內譯을 보면 『가정생활』이 85.1%로 대부분을 차지한 반면 『사업』 등은 10.1%에 불과해서 가정생활에 많은 문제가 있었음을 알 수 있었다.<br/> 5. 苦痛에 대한 對處態度롤 比較하여 보면 빨리 『잊을려고 努力했다』가 51.2%로 가장 많았고 그 다음이 『계속 걱정을 했다』(33.3%), 『걱정을 하지 않았다』(7.1%)의 순이었다.<br/> 6. 長壽한 사람들의 初經年齡은 『16~18歲』가 38.8%로 가장 많고, 그 다음이 『19歲이후』가 25.2%로서 전체 장수자의 64.0%가 16세이상에서 初經이 나타났으며, 閉經年齡은 『41~43歲』가 36.4%로 가장 많고, 그 다음이 『44~46歲』가 28.5%로서 전체 장수자의 64.9%가 46歲이하에서 閉經現象이 나타났다. 따라서 장수한 사람들의 初經年齡은 현재보다 4~5年 늦은 반면 閉經年齡은 현재보다 4~5年 빨랐음을 알 수 있었다. The present study was designed to be link a part of the research on the investigation on daily life and consciousness of the longevous people in Korea, and to investigate the health conditions, and the attitude on disease and suffering of longevous people in the past.<br/> 1. By the health conditions of longevous people between 40 and 60 years, "very good" showed the highest figure of 71.0%, followed by "ordinary" (21.6%). Consequently it is found that 92.6% of total longevous people surveyed maintained the good health conditions above ordinary.<br/> 2. Of the experiences of disease and/or injury after 60 years of longevous people, "never" showed the highest figure of 74.7%, while "had" showed the only 22.6% of total longevous people surveyed.<br/> 3. Of the details of disease and/or injury after 60 years of longevous people, "digestive disease" showed the highest figure of 32.6 %, followed by "apoplexia cerebri & hypertensions" (14.0%) and "heart disease" (14.0%), and followed by "respiratory disease" (12.8%).<br/> 4. Of the experiences of suffering between 40 and 60 years of longevous people, "never" showed 55.7% of total longevous people surveyed, while the frequency of suffering decreased in the order of "once" (22.7%), "2 times" (15.8%) and "3 times" (4.7%). By the details of suffering between 40 and 60 years of longevous people, "family life" showed the highest figure of 85.1%. followed by "business" (10.1%).<br/> 5. By the attitude on suffering of longevous people, "tried to forget soon" showed the highest figure of 51.2%, followed by "continuous worried" (33.3%). and followed by "not worried" (7.2%).

Analysis of eco-corridor usage status of mammals in Odaesan National Park

Sang Jin Lim,Ki Yoon Kim,TaeJun Lee,Woo Chan Lim,Ji Hong Min,Hyeong Woo Ji,Baek Soon Choi,Tae Il Kim,Hyo Nam Kim,Hee Bok Park,Yung Chul Park 강원대학교 산림과학연구소 2017 강원대학교 산림과학연구소 학술대회 Vol.2017 No.11

We investigated species, ecological pathway type, and mammal size using two eco-tunnels from trail-camera data. The analyses of the camera data showed that 12 mammalian species from 8 families of 5 orders used Jin-gogae eco-corridor (bridge type) and 14 mammalian species from 9 family 5 orders were found at Odaesan eco-corridor (tunnel type). At both eco-corridors, water deer used eco-corridor most frequently, and then secondly racoon dog did. The analyses by mammal size (small, medium, and large) showed that large-sized mammals were found in high ratio at the bridge type of the eco-corridors. In case of medium-sized mammals, utilization ratio of the tunnel-typed corridor was 42%, whereas that of the bridge-typed corridor was 24%, showing 1.8 times higher usage.

Analysis of monitoring Road-kill in Odaesan National Park

Sang Jin Lim,Ki Yoon Kim,Woo Chan Lim,Hyeong Woo Ji,Baek Soon Choi,Tae Il Kim,Hyo Nam Kim,Ji Hong Min,Hey Ri Kim,Eui Kyeong Kim,Yung Chul Park 강원대학교 산림과학연구소 2017 강원대학교 산림과학연구소 학술대회 Vol.2017 No.11

We surveyed mammalian roadkill at the National Route 6 (Jin-gogae to Songcheon, 18㎞) and a local road 446 (Odaesan National Park office to Sangwon-temple, 12㎞) in Odaesan National Park. Data of the surveys were analyzed by year, month, and species. Roadkills of 226 individuals were found at the survey areas. Of them, the road-killed 131 mammal individuals, 44 bird individuals, 40 reptile individual and 11 amphibian individuals were found during the survey period. High ratio of the road-kills was observed in mammals than the other animals. Among mammalian species, high ratio of the road-kills was observed in squirrels. There were road-kills of three endangered species, containing otters, yellow-throated marten and leopard cats. According to the analyses of annual road-kills, roadkills of 104 cases were occurred and highly frequent in 2014, following by roadkills of 81 cases in 2015, and then those of 41 cases in 2016. Most ases of the roadkills occurred in summer (June to September). The results will contribute to establishing management for reduction of roadkill in Odaesan National Park.