진원함수를 고려한 다중지연시간창 해석

정태웅 ( Tae Woong Chung ),요시모토카즈오 ( Kazuo Yoshimoto ) 한국지구물리·물리탐사학회 2012 지구물리와 물리탐사 Vol.15 No.2

고유감쇠 분리를 위한 다중지연시간창(MLTW) 해석은 진원의 방사 형태에 크게 의존하여 제 1차 시간창의 분산이 매우 크다. 이를 보완하기 위하여 진원의 방위각에 따라 고르게 분포하는 많은 자료를 사용하여야 한다. 만일 진원함수를 알고 있는 자료를 이용하면 이용하면 이러한 오차를 줄이게 되어 적은 자료 및 방위각 분포에 상관없는 자료연구가 가능할 수 있다. Yoshimoto(2000)의 DSMC에 진원구조를 계산하는 알고리즘을 결합하여 MLTW 해석을 시도하였다. 진원함수를 고려한 MLTW법에서 같은 단층면해를 이용해야 하는 제약으로 최소자승을 이용할 수 있는 자료 수가 극히 제한된다. 따라서 진원구조 계산 알고리즘을 기존 다량의 자료를 이용하는 역산 방법에 적용하는 것이 불가능하다는 것을 확인하였다. 즉, 제1차 시간창의 분산이 줄어든 대신 완곡한 이론곡선을 구하기에는 자료가 턱없이 부족함을 확인하였다. 자료를 더 확보해야 한다는 일반적인 해결책 이외에, 새로운 제약조건을 부과하기 위한 연구가 필요할 것으로 사료된다. Multiple Lapse Time Window (MLTW) analysis for obtaining intrinsic attenuation value require numerous data without directional bias to compensate focal mechanism. The first window of MLTW, therefore, shows large deviation in fitting smoothed theoretical curve. The information on the focal mechanism may reduce burdens of number and distribution. This study combined algorithm of computing focal mechanism to DSMC method by Yoshimoto (2000). However, the MLTW method based on the numerous data was not applicable to this study, because of the limited data to the almost same fault plane solution. This study showed that the available data was too insufficient to construct smoothed theoretical curve, although the deviation of the first window was improved. Instead of conventional solution by more data, the study seems to be needed for new constraints to obtain smoothed curve.

일본 전통주의 글로벌전략 고찰을 통한한국전통주의 해외시장진출에 관한 탐색적 연구

( Yoshimoto Koji ),( Il Hyun Bae ) 한국유통경영학회(구 한국유통정보학회) 2014 유통정보학회지 Vol.17 No.5

본 연구는 일본의 전통주인 사케에 대한 일본내 수요가 지속적으로 축소되고 있는 반면에 세계시장에는 일본전통술에 대한 붐이 일어나고 있다는 사실에 착안하여 연구가 시작되었다. 즉, 일본 전통주의 해외진출전략 고찰을 통하여 한국 전통주의 해외시장 진출전략에 대한 시사점을 제시하고자 연구되었다. 연구결과 일본정부는 일본 전통주의 국가별 해외수요 및 경영환경분석에 관한 정보를 기업에 제공하면서 새로운 시장 창출을 위한 지원을 아까지 않고 있다. 이러한 일본정부와 기업체의 협력 체계와해외의 일본대사관을 활용한 일본 전통술에 대한 홍보전략 등은 한국에 주는 시사점이 크다고 할 수있다. 일본정부는 일본 국내시장의 축소문제를 해결하기 위해, 일본 전통술에 대한 세계화전략을Cool Japan전략의 하나로 발전시키고 있다. 또한, 일본의 세계적인 음식인 초밥 등의 해외진출전략에대하여 적극적인 지원을 하고 있다. 본 연구에서는 특히 일본 전통주에 대한 수요가 없을 것이라고 생각이 되는 중부유럽인 비셰그라드(폴란드, 헝가리, 체코, 슬로바키아)시장에서의 시장창조 전략사례를통해, 우리나라도 막걸리나 소주와 같은 전통술의 해외시장 진출에 대한 시사점을 얻고자 연구하였다. In Japan, the domestic consumption of SAKE is going to reduce per year, while the SAKE boomwas going on in the world. There, Japanese sushi and sake consumption in the global market showa continued increase. The Japanese government is developing global strategy utilized Japanese foodand SAKE as part of Cool Japan strategy and resolution of the issue of reduction in personnelSAKE consumption. In this study, We wish that we especially consider the situation of theglobalization and overseas market’s agenda of SAKE in the Visegrad Group(V4) as The CzechRepublic, Hungary, Poland and Slovakia. This study provides significant implications to Koreangovernment and companies.

Cancer Risk Among Children of Atomic Bomb Survivors : A Review of RERF Epidemiologic Studies

Yoshimoto, Yasuhiko MediMedia Korea 1990 JAMA-Korea Vol.5 No.10

Sensory Information Processing

Yoshimoto, Chiyoshi The Korea Society of Medical and Biological Engine 1985 의공학회지 Vol.6 No.2

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70$\pm$1.32mmHg/min)compared to CF dialyzers(4.32$\pm$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500, 550, 570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500, 550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100, 300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs

Economic Analysis of Snow Damage on Sugi (Cryptomeria japonica) Forest Stands in Japan Within the Forest Stand Optimization Framework

Yoshimoto, Atsushi,Kato, Akio,Yanagihara, Hirokazu Institute of Forest Science 2008 Journal of Forest Science Vol.24 No.3

We conduct economic analysis of the snow damage on sugi (Cryptomeria japonica) forest stands in Toyama Prefecture, Japan. We utilize a single tree and distant independent growth simulator called "Silv-Forest." With this growth simulator, we developed an optimization model by dynamic programming, called DP-Silv (Dynamic Programming Silv-Forest). The MS-PATH (multiple stage projection alternative technique) algorithm was embedded as a searching algorithm of dynamic programming. The height / DBH ratio was used to constrain the thinning regime for snow damage protection. The optimal rotation age turned out to be 65 years for the non-restricted case, while it was 50 years for the restricted case. The difference in NPV of these two cases as the induced costs ranged from 179,867 to 1,910,713yen/ha over the rotation age of 20 to 75 years. Under the optimal rotation of 65 years, the cost became 914,226 yen/ha. The estimated annual payment based on the difference in NPV, was from 9,869 yen/ha/yr to 85,900 yen/ha/yr. All in all, 10,000 yen/ha/yr to 20,000 yen/ha/yr seems to cover the payment from the rotation age of 35 to 75 years.

Effect of relative density on the shear behaviour of granulated coal ash

Yoshimoto, Norimasa,Wu, Yang,Hyodo, Masayuki,Nakata, Yukio Techno-Press 2016 Geomechanics & engineering Vol.10 No.2

Granulated coal ash (GCA), a mixture of the by-product from milling processes with a small amount of cement added, has recently come to be used as a new form of geomaterial. The shear strength and deformation behaviours of GCA are greatly determined by its relative density or void ratio. A series of drained triaxial compression tests were performed on cylindrical specimens of GCA at confining pressures of between 50 kPa and 400 kPa at initial relative densities of 50%, 70% and 80%. Experimental results show that a rise in relative density increases the peak shear strength and intensifies the dilation behaviour. The initial tangent modulus and secant modulus of the stress-strain curve increase with increasing initial relative density, whereas the axial and volumetric strains at failure decrease with level of initial relative density. The stress-dilatancy relationships of GCA at different relative densities and confining pressures display similar tendency. The dilatancy behaviour of GCA is modelled by the Nova rule and the material property N in Nova rule of GCA is much larger than that of natural sand.

The Increase of Tourists between Korea-China-Japan and the Change of Demand for Flight in Northeast Asia

Yoshimoto Koji,배일현 한국물류학회 2012 물류학회지 Vol.22 No.4

2012년에 한국을 방문한 관광객은 1,000만을 넘어 설 것이 확실시되고 있다. 특히 이들 중 34%는 일본인. 27%는 중국인으로 밝혀졌다. 이러한 상황에서 한국의 관광객들도 중국과 일본을 많이 방문하는 것으로 나타나 향후 한·중·일 국가간의 항공수요가 폭발적으로 증가할 것으로 예상된다. 이에 본 연구는 한·중·일 3국가의 관광산업에 대한 현황과 한·중·일 3국가의 항공자유화에 대하여 살펴보았다. 연구결과는 다음과 같은 시사점을 제공하고 있다. 첫째, 관광홍보의 공유를 통하여 항호 인적자원의 개발과 훈련에 대한 상호 협력이 필요하다. 둘째, 각국의 관계당국은 잘 알려지지 않았지만, 인기있는 관광지에 대한 공유를 통하여 관광객을 서로 끌어들일 수 있는 ‘win-win’효과를 이끌어내야 한다. 셋째, 한·중·일 3개 국가는 물류인프라 및 서비스 인프라의 긴밀한 협조가 필요하다. 특히, 본 연구는 폭발적으로 늘어나는 관광수요에 대처하기 위해서는 3국가의 항고자유화 확충이 절실히 필요하다는 시사점을 제시하고 있다. Nowadays exchange among 3 countries(Korea, China and Japan) is more than 30 million people. Especially, Korea will be got more than 10 million foreign tourists in 2012. Chinese covered more than 27 percent of foreign travellers in Korea and Japanese covered more than 34%. In 2012, Korea expect that more than 1.8 million Japanese tourists and 1.19 million Chinese visit Korea. But, many experts expect that this situation will be reversed in a few years later. According to above situation, this study is to find practical implication about demand for flight in Northeast Asia. So we look into tourism industry in Northeast Asia. Also we look into open sky between Korea, China and Japan. The results are as follows.

Lunularic Acid and Prelunularic Acid of Liverworts in Plant Cell Culture

Yoshimoto Ohta 한국생약학회 1986 생약학회지 Vol.17 No.4

The Perception of Consonants in the Network Era

( Yoshimoto Makoto ) 범태평양응용언어학회 1998 범태평양응용언어학회지 Vol.1 No.1

『友情』の『生長』

吉本弥生(Yoshimoto, Yayoi) 일본어문학회 2016 일본어문학 Vol.75 No.-

“Friendship,” written by Mushanokoji Saneatsu, has been widely read as a youth novel and has been acknowledged as one of the masterpieces of the modern Japanese literature. It can be said that the central topics in this novel are Nojima’s love towards Sugiko, the friendship between Nojima and Omiya, and the gender issues, but I take a different approach to this novel by contrasting her relation to Nojima with her relation to Omiya and, in particular, considering the change of Nojima’s mental states. The feeling of the main character in “friendship,” Nojima, towards Sugikois considered to be idolatry, and it can be assumed that Nojima tries to attract her to resolve his lack of confidence. On the other hand, Omiya and Sugiko attract each other, developing a bidirectional love relation. In other words, Nojima’s love excluded the others, while the love between Omiya and Sugiko achieved an equal relationship between a man and a woman. However, the point at which Nojima is highly assessed in the novel is that his criterion for love is set on the personality of the woman. These criterion, in short, represent his honesty and cleanness, for which his personality “grows.” That Nojima highly values personality lets him be aware of his own problems and recognize the reality.