• 한국군사과학기술학회지
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• 제16권4호
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• pp.456-464
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• 2013

Passive sonar in submarine can detect the target in long range and can attack using it. There are many noises which can be received at passive sonar of submarine. When noise received in the sonar it make diverse interference pattern depend on the ocean ambient and movement scenario. Interference pattern can be explained by theory of waveguide invariant. In this paper, analyze the interference pattern according to the relative motions of surface ship and submarine. And analyze the occurrence reason of 2 kinds of interference patterns those are usually display on the submarine console. The results show that if relative speed of submarine and target increase then gradient of interference pattern will increase. And closest point approach of submarine and target decrease then gradient of interference pattern will increase. Bathtube pattern usually appear when target pass though close to submarine and Pinetree pattern appear target pass though above of submarine.

• 한국지리정보학회지
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• 제4권4호
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• pp.72-78
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• 2001

본 연구에서는 경남 거제시 연초면 지역의 소나무재선충(Bursaphelenchus Xylophilus) 피해발생 선단지를 보다 효율적으로 추출하기 위하여 IKONOS 1m 영상의 공간해상도와 Landsat TM 영상의 band 3, 4와 동일 파장대역이면서 식생과 같은 산림분야 연구에 많이 이용되고 있는 4m 영상의 Red(0.63~0.69)밴드, NIR(0.76~0.90)밴드를 활용하였다. 그 결과 IKONOS 4m 영상의 식생밴드(NIR band)를 이용한 히스토그램 분석이 가장 효과적이었으며, 이는 GPS(global positioning system)를 이용한 현지조사에서 총 22개의 sample 지점에서 15개의 소나무재선충 피해목을 추출함으로서 확인되었다. 본 연구는 소나무재선충 피해지역 추출뿐만 아니라 산림병해충 피해연구에 대한 고해상도 위성영상의 활용가능성을 제시하고자 한다.

• 한방재활의학과학회지
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• 제27권1호
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• pp.27-35
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• 2017

Objectives This study aimed to review case studies on interventions of Korean medicine for hip pain. Methods We searched seven electronic databases for relevant studies up to Oct 2016. Case studies of Korean medicine interventions for hip pain were included and analysed. Results 15 case studies were included (Korean databases; n=15) and Total number of patients was 17 cases. A total of 13 types of interventions were reported, of which acupuncture (93.3%), herbal medicine (80.0%) and pharmacopuncture (40.0%) were the most frequently used. GB30 (66.7%), LR3 (41.7%), BL36 (33.3%) and ST31 (33.3%) were used in at least 4 papers. Cheongpa-jeon (25.0%) and symptom change (46.7%) were most frequently used in herbal medicine and outcome measure respectively. Conclusions Clinical studies, especially double-blinded randomized controlled trials, of Korean medicine interventions for hip pain must be conducted to obtain definite conclusions.

• 한국산업융합학회 논문집
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• 제20권5호
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• pp.377-383
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• 2017

In this research, the improvement of Korean rice wine (makgeolli) with pine (Pinus koraiensis) extract addition was evaluated due to the increase in alcoholic Korean traditional beverage. Makgeolli fermentation was prepared using Korean rice and nuruk (traditional starter) supplemented by pine needle (MPN) and pine sprout (MPS) extract. The average of initial pH level for MPN was 3.95 and MPS was 4.55, the average of initial sugar content for MPN was 0.4% and MPS was 0.3%. The sugar content and pH level behavior were investigated every 24h during fermentation period. The observation of microbial colony was done at days 8 of fermentation period with three time sample dilution. Afterward, the physical appearance of fermentation solution and microbial development were investigated in the final of fermentation period. The number of yeast and LAB ($402{\times}103\;CFU/mL$) in MPN was greater than the yeast and LAB count in MPS ($224{\times}103\;CFU/mL$). The pH level obtained by addition pine sprout have value of R2 higher than addition of pine needles (leaf), the sugar content (%) behaviour was opposite with pH level behaviour.

• 한국연초학회지
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• 제16권2호
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• pp.163-171
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• 1994

This experiment was conducted to investigate the discrimination of cigarette brands and the similarity between Korea and America cigarette brands by near infrared spectra. Statistical tools such as principal component analysis (PCA) and mahalanobis distance(M.D) were used. The discrimination rate of the Korea and the America cigarette brands, determined by position number which was calculated with PCA and M.D, was 94% and 87%, respectively. The spectra of the 10 America cigarette brands were selected by averaging 5 sample spectra for each brand and another 5 spectra for each brand were investigated to use as the sample spectra. Comparing the sample spectra with the selected spectra by M.D using 410-1090 nm, 1110-1850 nm and 1970-2490 nm wavelength, the discrimination rate which was determined by the closest M.D between the sample and the selected spectra was 100% when each spectra was investigated on the same time. But the discrimination rate decreased 50% when the sample and the selected spectra were investigated on the different time. Excluding 1970-2490 nm wavelength, the discrimination rate increased up to 90% when the sample and the selected spectra were investigated on the different time. Comparing the spectra of Korea cigarette brands with those of America cigarette brands by M.D using only 410-1090 nm and 1110-1850 nm wavelength, the spectra of Expo(G) was similar to Winston, Vantage(U.L) and Benson & hedges(M.), the spectra of Hanaro(D) was similar to Carrel, Winston(L), Vantage(U.L), \Vantage and Carrel(L), the spectra of Hanaro(L) was similar to Winston(L) , Carton, Vantage and Carmel(L) and the spectra of Pinetree was similar to Kent, Kool, Kent(G.L), Merit and Benson & hedges(L), respectively. Key Words : NIRS, cigarette brands discrimination

• 지식경영연구
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• 제25권2호
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• pp.115-134
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• 2024

인터넷의 지속적인 발전과 다양한 모바일 기기의 확산으로 인해 소비자 구매결정에 대한 인터넷 구전의 영향력은 끊임없이 증가하고 있는 상황이다. 그러나 다양한 정보원으로부터 상반된 내용의 많은 정보를 접하는 소비자들은 끊임없이 정보의 신뢰성에 대해 고민하게 되고 이에 따라 제품 종류 별 구전 영향력이 큰 정보원의 유형에 대한 연구가 지속되고 있다. 이에 본 연구에서는 정보원 유형간 구전방향이 불일치할 경우, 소비자들이 어떠한 정보원의 구전에 더욱 영향을 받는지 온라인 구전을 전문가와 일반소비자 구전으로 나눈 후, 계층적 베이지언 분석방법론을 통해 분석하였다. 연구 결과, 전문가 구전과 일반소비자의 구전 방향성이 일치할 경우에는 기존 연구와 같이 구매의도에 정의 영향을 미치는 것을 확인하였다. 나아가 전문과 구전과 일반소비자의 구전 방향성이 불일치할 경우에는 소비자의 구매의도가 전문가 보다는 일반소비자의 구전 방향성에 더욱 영향을 받는 것을 확인할 수 있었다. 본 연구에서는 표본집단의 크기가 작더라도 데이터 시뮬레이션을 통해 분석이 가능한 베이지언 방법론을 적용해 분석을 시도하였다. 이를 통해 한정된 데이터로 여러 소집단에 대한 분석 가능성을 확인한 것은 향후 더욱 세분화된 제품군과 다양한 정보원 유형의 온라인 구전 효과 연구에 기여하고 온라인 마케팅 관리자에게 유용한 실무적 시사점을 제공할 것으로 기대한다.