선체에 미치는 Coriolis 효과

박해훈 釜山水産大學校 1987 釜山水産大學 硏究報告 Vol.27 No.2

운항 중인 선체에 미치는 Coriolis 효과에 대해 실습선 새바다호와 특수선인 공기부양선에 대해 살펴보면 다음과 같이 요약할 수 있다. (1) 새바다호의 경우, 속력에 따른 편향각은 항해 속도에서는 거의 영향이 없으나, 입거 등 아주 저속을 요하는 곳에서는 이의 효과를 고려해야 할 것이다. (2) 위도에 따른 편향각의 크기는 동일한 조건에서는 위도가 높아짐에 따라 커진다. (3) 공기부양선의 경우, 항해 속도에서도 경제적인 운항을 위해서는 편향효과를 고려할 필요가 있다. (4) 두 선박이 Coriolis 효과가 있는 상태에서 협수로나 특히 고위도 지방을 항과할 때는 좌현대 좌현으로 항과하는 것이 좋을 것이다. As a ship moves on the earth surface which is a rotating one, she is affected by Coriolis force. This Coriolis force shifts her to the right side perpendicular to her course in the northern hemisphere. Anything which moves in liquid meets with resistence. The coriolis effects in cases of a training ship, the Saebada and two hovercrafts were examined.

대학 교직원의 라이프스타일에 따른 세분시장별 대학 교직원 급식소 서비스 품질 인식 분석

박문경,양일선,김동훈,신서영,이해영 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

Market segmentation helps providers to find better marketing opportunities and allows foodservice managers to develop the right product for each target market. Therefore, this study, taking university faculty and staff as subject, is intended to diagnose the relative value of service quality attribute, on the basis service quality scenario of faculty foodservice to suggest price for improving customer loyalty in market segments. A questionnaire was developed and mailed to 600 Yonsei university faculty and staffs. A total of 385 questionnaires were usable; resulting in a 58.7% of faculty and a 69.7% of staff response rate, respectively. Statistical data analysis was completed using the SAS/Win 6.12 for descriptive Analysis, ANOVA, principal factor analysis, cluster analysis, reliability test and discriminant analysis. The results of the study are as below. Eighteen questions were selected for measuring respondents' lifestyle by AIO method and the seven lifestyle factors derived from factor analysis and aggregated distinct 4 clusters. Service quality attributes of the scenario were determined with 'food quality', 'menu variety', 'atmosphere', 'fast service', and 'clean and sanitation'. 'food quality', 'menu variety', 'atmosphere', 'fast service', and 'clean and sanitation', in decreasing order, were identified as improving customer loyalty. However, most faculty and staffs were satisfied with the present meal price. The result of this study indicates that the relative value of service quality was differed significantly among the various market segments. 'Food quality', 'menu variety', and 'atmosphere' were determined as major service quality attributes. Thus, customer loyalty could be increased by improving food taste and quality, atmosphere, and service delivery.

「비해당소상팔경시권(匪懈堂瀟湘八景詩卷)」과 일본 유현재(幽玄齋) 소장 <소상팔경도>의 연관에 대하여

박해훈 국립중앙박물관·한국고고미술연구소 2009 동원학술논문집 Vol.10 No.-

Sosangpalgyeongdo(Eight Views of the Xiao and Xiang Rivers) known to have first been painted by Song Di during the Northern Song Dynasty(1015~1080) was widely popular and became synonymous with landscape paintings depicting scenic views. The Sosangpalgyeongdo was introduced to Korea during the Goryeo Dynasty and since then numerous literati and painters depicted the scenery of the Xiao and Xiang rivers in poems and paintings. Production of poems and paintings themed on the scenery of the Xiao and Xiang rivers was particularly popular, which can be conjectured from quantities and document records of Sosangpalgyeongdo which have been handed down today. One of the most representative examples of the production of poems and paintings on the eight views of the Xiao and Xiang rivers can be found from the Album of the Poems for Eight Views of the Xiao and Xiang Rivers. It was commissioned by Prince Anpyeong in 1442 to feature copying of calligraphies of poems depicting the Sosangpalgyeong written by Southern Song Emperor Ningzong and paintings on the landscapes of the Xiao and Xiang rivers. This album is of very high value as a material to show the trends of Sosangpalgyeongdo in the early Joseon period. Eight Views of the Xiao and Xiang Rivers, owned by Yoohyeonjae, is a very important work, featuring all eight views of the Xiao and Xiang Rivers, believed to have been produced relatively early in the Joseon period. Like other Sosangpalgyeongdo in the early Joseon era, it shows the painting style of An Gyeon, one of the greatest painters of the early Joseon period, and the artists are also unknown. One of the characteristics in the Eight Views is the way of marking the titles of paintings. Among the titles on the paintings, the markings of Wonpobeomgwi and Pyeongsaangrak are not found in other works and are identical with the markings of poems of Sosangpalgyeong by the Emperor Ningzong contained in the Album of the poems for Eight Views of the Xiao and Xiang Rivers. It is considered that not only the way of marking titles, but also the order of the eight views are identical with the poems of Sosangpalgyeong by the Emperor Ningzong. Therefore, it is presumed that the reason why the order of paintings and title marking methods of the Eight views owned by Yoohyeonjae are the same as those of the poems by the Emperor Ningzong is that the former had been greatly influenced by the Sosangpalgyeongdo in the Album. If the connection between the two works is discovered more clearly, more detailed analysis on how Sosangpalgyeongdo of the early Joseon period unfolded and what impact An Gyeon’s Sosangpalgyeongdo had on future generations is likely to be conducted. 본고는 조선 초기 소상팔경도의 중요한 작례로서 「비해당소상팔경시권」을 검토하고 현존하는 조선 초기 소상팔경도 중 일본 유현재 소장 <소상팔경도>와의 연관성에 대하여 고찰하였다. 북송대 송적(宋迪, 약 1015~약 1080)이 처음 그린 것으로 알려진 소상팔경도는 곧 널리 성행하며 승경을 소재로 한 산수화의 대명사가 되었다. 우리나라에서도 고려시대에 전래된 후 많은 문인과 화가들이 시와 그림으로 소상팔경을 표현하였다. 특히 조선 초기 소상팔경을 노래한 시와 함께 그림의 제작이 매우 성행한 사실은 현재 전하는 소상팔경도의 수량이나 문헌의 기록에서도 짐작된다. 그러나 팔경을 모두 갖추어 그려진 예는 많지 않은데, 현재 일본 유현재에 소장된 <소상팔경도>는 팔경을 모두 갖추고 안견파 화풍 중에서도 비교적 고식인 매우 귀중한 작품이다. 본래 화첩이었을 것으로 추정되는 이 작품은 다른 작품들과 연관된 요소가 많다는 점에서도 주목된다. 유현재 소장 <소상팔경도>를 살펴본 결과, 팔경의 순서와 화제의 표기방식 등이 같은 예는 유일하게 「비해당소상팔경시권」에 실렸던 남송 영종의 소상팔경시였다. 이러한 사실로 볼 때 유현재 소장 <소상팔경도>는 「비해당소상팔경시권」에 실린 소상팔경도를 방한 작품일 가능성이 큰 것으로 추정된다. 이는 유현재 소장 <소상팔경도>의 일부 소재와 표현이 안견의 <몽유도원도>와 통하는 점과 「비해당소상팔경시권」에 실린 소상팔경도의 작가로 안견이 지목되는 사실과도 부합한다. 한편 유현재 소장 <소상팔경도>에 나타난 소재와 표현 양식은 다소 변형되긴 하지만 후대의 소상팔경도와 산수도에 많은 영향을 미친 것으로 보인다. 앞으로 이 두 작품의 연관이 보다 분명하게 밝혀진다면 조선 초기 소상팔경도의 전개과정 그리고 안견의 <소상팔경도>가 후대에 미친 영향 등에 대해서 구체적인 분석이 이루어질 것으로 기대된다.

시계열분석을 이용한 한국 오징어 어업의 어획량 분석과 예측

박해훈,신형호 麗水水産大學校 産業技術硏究所 1996 産業基術硏究所 論文集 Vol.5 No.-

한국 오징어 어업에서의 22년간이 월별 어획량 자료에 시계열 분석을 이용하여 어획량을 분석, 예측하였다. 시계열 분석은 다른 생물학적, 해양학적, 사회 경제적인 요소가 없어도 단지 어획량 자료만으로 분석과 예측이 가능하다. 1971∼1990년 사이의 월별 오징어 어획량의 자료를 ARIMA 시계열 모형에 적응시켜 분석한 결과, 다음과 같은 계절 ARIMA 모형식을 구하였다. 로그(대수)변환때 : ?? Box-Cox 변환때 : ?? 위의 두 모형중 로그변환시킨 경우보다 Box-Cox 변환시킨 것이 예측오차가 적었으며, BOX-COX변환식은 ??이었다. 위의 두 모형 중 후자의 모형으로 1991∼1992년에 대해 오징어의 월별 어획량을 예측하였다. 예측 어획량과 실제 어획량과의 월별 오차범위는 0.9∼203%였다. 실제 어획량이 1991년과 1992년에 각각 109,902M/T, 139,792M/T이고, 예측어획량은 78,585M/T과 86,968M/T이었다(1991년의 오차는 24.6%, 1992년에는 27.4%). 2년 동안의 총어획톤수에 대한 오차는 26.2%였다. 또한, 스펙트럼 분석은 순환변동의 주기가 12.5개월, 2.2년 및 5.5년인 성분에서 상대적으로 큰 값을 나타내었으며, 순환변동 성분은 적절한 ARIMA 모형을 결정하는데도 도움을 준다. The seasonal Autoregressive Integrated Moving Average (ARIMA) model and spectral analysis were described to forecast the monthly landings of squid in Korea. The prediction error by the Box-Cox transformation on monthly squid catches in Korea was less than that by the logarithmic transformation. The equation of Box-Cox transformation was ??. the seasonal ARIMA model is presented ?? where : ??=value at month t: ?? is a backward shift operator, that is, ??: and ??=error term at month t, which is to forecast 24 month ahead the squid landing in Korea. Forecast of the monthly squid landings for 1991∼1992 which were compared with the actual landings had an absolute percentage error(APE) range of 11.2∼207.7%. Total observed annual landings in 1991 and 1992 were 109,902M/T and 139,792M/T respectively, while the model predicted 82.816M/T and 101,479M/t (APE 24.6% and 27.4%, respectively). And spectrum analysis of the monthly catches of squid showed some dominant flutuations in the periods of 12.5 month, 2.2 and 5.5 years. The spectrum analysis was also useful for selecting better ARIMA model.

DEA를 이용한 천주교 서울대교구 본당 운영의 효율성 평가

박해철,김성훈 中央大學校經營硏究所 2003 經營學論集 Vol.29 No.2

혼합감염증에 대한 항균요법 연구

박혜경,이승훈 中央醫學社 1976 中央醫學 Vol.31 No.4

Various criminal marks and traces left by suspect in or around, the criminal scene is the important physical evidence that have to give the valuable clue in the investigation, and the evidences can draw the presumption of the criminal scenario as like th

1973년도 變形菌 (Proteus spp.)감염증에 대한 임상세균학적 연구 : An analysis on 93 strains isolated in 1973

박혜경,석종성,이승훈 최신의학사 1974 最新醫學 Vol.17 No.1

Genus Proteus normally constitutes a considerable proportion of commensal bacteria in the intestinal tract and is frequently isolated from various clinical specimens. Recently, the Proteus group are considered to be one of the clinically important Gram-negative bacilli due to broad resistance to common antibiotics. An analysis was made on 93 Proteus strains isolated from various clinical specimens from January 1 to November 15, 1973. The following results were obtained; 1) The species of 93 strains were identified to be 7 P. vulgaris, 32 P. mirabilis, 40 P. morganii and 7 P. rettgeri. 2) The sources of frequent Proteus isolations were stool and rectal swab (43 strains), pus (31 strains) and urine(11 strains). 3) Clinically significant Proteus infections appeared to be wound infections and urinary infections. 4) No significant difference in Proteus infections observed between male and female group. 5) The relatively potent drugs for Proteus spp. appeared to be Gentamicin and Kanamycin whereas Penicillin, Chloramphenicol, Ampicillin, Tetracycline, and Lincomycin appearedgene rally non effective.

BaTiO₃분말 합성에서 반응조건의 영향

박정훈,박상도,남성찬,이해정 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

생성물 수율과 반응성을 고려하여 선정한 원료를 이용하여 수열합성법으로 BaTiO_(3) 미세 분말을 제조하였으며 합성시 반응 원료, 온도 및 시간 변화에 따른 영향을 조사하였다. Ba(NO_(3))_(2)와 TiO_(2)ㆍxH_(2)O를 출발물질로 사용할 경우는 광화제 없이도 80℃부터 BaTiO_(3)가 합성되었다. BaTio_(3)의 합성은 반응혼합물의 pH가 높을수록 유리하였으며 전화율은 반응시간보다는 반응온도에 더 큰 영향을 받았다. 이상의 실험 결과로부터 BaTiO_(3) 입자는 수열합성시 용액 중 OH^(-)기의 친핵 공격에 의한 함수 티타니아의 용해와 Ba이온과의 탈수 반응을 통한 핵생성 및 성장 경로를 통해 합성된다고 제안하였다. BaTiO_(3) fine powder was prepared by hydrothermal synthesis with various precursor materials selected in view of yield and reactivity. The effect of reaction temperature, time and raw material was investigated in the above process. While a(NO₃)₂ and TiO₃·xH_(2)O were used as starting material, it was not possible to prepare BaTiO_(3) without mineralizer, however the same can be synthesized at 80℃ without mineralizer using Ba(OH_(2))·8H₃O and TiO₃·xH₃O. The synthesis of BaTiO₃ was favored by higher pH of the reaction solution and conversion was found dependent on the reaction temperature instead of time. Experimental data suggested that BaTiO₃ seemed to be synthesized hydrothermally through reaction pathway that included dissolution of hydrous titania by nucleophilic attack of OH^(-) group in aqueous medium, nucleation by dehydration between Ba ion and titanium complex dissolved and the growth of nuclei.

PLD 박막의 광학적 성질

정재훈,홍진수,박해윤 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.1

Thin amorphous carbon film were deposited by Q Nd:YAG 532nm laser ablation from 99.7% graphite target with beam power density of 6x10 15 Wcm-2. In order to estimate the quality of the PLD(Pulsed Laser Deposition) film one of the most important optical properties, bandgap energy, was characterized by visible transmission and an optical bandgap energy of 2.05eV was achieved. Comparing our result with the published values in the literature we have confidence that our film shows the good quality at optical properties.

에타놀 정맥투여 고양이의 뇌압 변화에 관한 연구

김세훈,장석종,박해근 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

It has been well known that respiratory status has affected the intracranial pressure by' changing the brain blood flow, and also ethanol has affected the respiratory system by inhibiting the respiratory center and has affected cardiovascular system by inhibiting the cardiac performance and decreasing the total peripheral resistance. However, effect of ethanol on intracranial pressure has not been studied satisfactorily. Thus, following experiment was performed to examine the change of the intracranial pressure after ethanol administration in the cats. Ethanol was infused intravenously by lg ethanol per kg body weight for 15 minutes. Intracranial pressure was measured through balloon inserted between epidura and skull. Arterial blood pH, Po_2, Pco_2, ethanol concentration were measured. The results obtained are surnmerized as follows. Blood ethanol concentration increased by linear and peaked at 15 minutes(blood ethanol concentration was 409±31 mg%). Po_2, Pco_2. and pH at 15 minutes were 80. 3±5. lmmHg, 49.2±3.3mmHg and 7.24 =0.015 respectively. Blood pressure began to decrease and arterial pulse pressure began to increase at 10 minutes and more and more at 15 minutes respectively. Intracranial pressure began to increase at 10 minutes (blood ethanol concentration was 316±33 mg%) and peaked as 168.7±11.4% contrast to control at 15 minutes and also amplitude of intracranial pulse wave was increased. From the above results, it was suggested that intracranial presssure and amplitude of intracranial pulse wave were increased significantly by inhibiting respiratory center and thereby dilatating cerebral blood vessels with intravenous ethanol administration.