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Telematics Specific Horizontal Distance Traveled by a Falling Car
Shin, Seong-Yoon,Jang, Dai-Hyun,Lee, Hyun-Chang The Korea Institute of Information and Commucation 2012 Journal of information and communication convergen Vol.10 No.2
Telematics services include automatic location tracking for emergency rescue, which is available for use in case of a car accident due to falling off roadways. This paper presents a simulation study on how far a car will fall before it hits the ground if it drops off of a roadway due to an accident or a natural disaster. The greatest horizontal distance the falling car can travel is presented in this paper, based on the assumption that air resistance as well as the direction and degree of acceleration due to gravity is negligible. This paper also presents the depth of the dent caused by the car sinking into the ground, the time it took for the car to fall free, and the velocity at which it travelled and horizontal distance it traveled. In this paper, the damage done to cars that crash into the ground and the dangers thereof are graphically represented.
Hyun-Ae Lee(이현애),Dai-Hyun Jang(장대현),Seong-Yoon Shin(신성윤) 한국정보통신학회 2021 한국정보통신학회 종합학술대회 논문집 Vol.25 No.2
본 논문에서는 RT(Robot Technology) 및 관련 산업을 중심으로 현대자동차그룹의 21세기를 이끌어갈 새로운 중추 산업 로봇기술의 보스턴 다이내믹스 M&A를 통해 모빌리티 분야에 현대자동차의 선진사례와 기술을 소개한다. In this paper, Hyundai Motor Group’s advanced cases and technologies are introduced in the mobility field through Boston Dynamics M&A, a new pivotal industrial robot technology that will lead the 21st century of Hyundai Motor Group, focusing on RT(Robot Technology) and related industries.
SUMO Modification Is Involved in the Maintenance of Heterochromatin Stability in Fission Yeast
Shin, Jin A.,Choi, Eun Shik,Kim, Hyun Soo,Ho, Jenny C.Y.,Watts, Felicity Z.,Park, Sang Dai,Jang, Yeun Kyu Elsevier 2005 Molecular cell Vol.19 No.6
<P><B>Summary</B></P><P>Several studies have suggested that SUMO may participate in the regulation of heterochromatin, but direct evidence is lacking. Here, we present a direct link between sumoylation and heterochromatin stability. SUMO deletion impaired silencing at heterochromatic regions and induced histone H3 Lys4 methylation, a hallmark of active chromatin in fission yeast. Our findings showed that the SUMO-conjugating enzyme Hus5/Ubc9 interacted with the conserved heterochromatin proteins Swi6, Chp2 (a paralog of Swi6), and Clr4 (H3 Lys9 methyltransferase). Moreover, chromatin immunoprecipitation (ChIP) revealed that Hus5 was highly enriched in heterochromatic regions in a heterochromatin-dependent manner, suggesting a direct role of Hus5 in heterochromatin formation. We also found that Swi6, Chp2, and Clr4 themselves can be sumoylated in vivo and defective sumoylation of Swi6 or Chp2 compromised silencing. These results indicate that Hus5 associates with heterochromatin through interactions with heterochromatin proteins and modifies substrates whose sumoylations are required for heterochromatin stability, including heterochromatin proteins themselves.</P>
Shin, Hyun Dai 중소기업융합학회 2015 중소기업융합학회 국제학술대회논문집 Vol.2 No.1
Abstract the purpose of the study is to investigate that the relevance of between stability on financial structure and trade balance on tangible goods. This study was used to data (1994-2013), as stability on capital structure by means of independent variable that the ratio of shareholders' equity, debt ratio, current ratio, quick ratio, noncurrent ratio, noncurrent and long term ratio. The dependent variable is trade balance on tangible goods, using this data (1994- 2013). In this situation, we can get analyzing and researching result, using variable's change scale. From this research, the points of the study result can be summarized in the following items. First, ratio of stability on financing has no significant effects so as to dependent variable (the trade balance of tangible goods). It shows that ratio of stability on financing is not important factor as a variable that is controlled for the trade balance of tangible goods. Second, ratio of stability on payment capacity also has no significant effect so as to the trade balance of tangible goods. It shows that ratio of stability on payment capacity is not important factor (as a variable) which is controlled for the trade balance of tangible goods, too. Third, as one of ratios, noncurrent ratio which can be considered stability on fund management has significant positive effect so as to trade balance on tangible goods. Additionally, noncurrent and long term ratio which was considered as stability on fund management has no significant factor for 'positive or negative' effects so as to trade balance of tangible goods. It shows management that was needed as positive factor so as to trade balance on tangible goods which aggressively can be invested about noncurrent asset. After all, the results of this study show the necessity of the recognition about trade balance of tangible goods and stability on financial structure, that can be recognized as important factors for grow and development of countries.
Study on the Underwater Acoustic Properties of Polyurethane Elastomer
( Hyun Dai Shin ),( Byung Hyun Ahn ) 한국고무학회 2017 엘라스토머 및 콤포지트 Vol.52 No.4
Two kinds of polyurethane elastomers were prepared and their acoustical properties underwater investigated. Their dynamic mechanical properties were measured using a dynamic mechanical analyzer. The sound speed and echo reduction in the 1-50 kHz frequency range were calculated from the data obtained using the analyzer. The sound speed, transmission and attenuation cofficient in 300-800 kHz were measured in a water-filled tank. Impedance tube experiments were performed to determine the reflective coefficient and echo reduction in the 3-8 kHz range. The polyurethane elastomer containing a hollow glass sphere showed a lower reflective coefficient and a higher echo reduction than the polyurethane elastomer without a filler.
Tae, Hyun-Jin,Kang, Il Jun,Lee, Tae-Kyeong,Cho, Jeong Hwi,Lee, Jae-Chul,Shin, Myoung Cheol,Kim, Yoon Sung,Cho, Jun Hwi,Kim, Jong-Dai,Ahn, Ji Hyeon,Park, Joon Ha,Kim, In-Shik,Lee, Hyang-Ah,Kim, Yang He Medknow PublicationsMedia Pvt Ltd 2017 Neural regeneration research Vol.12 No.12
<P>Low survival rate occurs in patients who initially experience a spontaneous return of circulation after cardiac arrest (CA). In this study, we induced asphyxial CA in adult male Sprague-Daley rats, maintained their body temperature at 37 ± 0.5°C, and then observed the survival rate during the post-resuscitation phase. We examined neuronal damage in the hippocampus using cresyl violet (CV) and Fluore-Jade B (F-J B) staining, and pro-inflammatory response using ionized calcium-binding adapter molecule 1 (Iba-1), glial fibrillary acidic protein (GFAP), and tumor necrosis factor-alpha (TNF-α) immunohistochemistry in the hippocampus after asphyxial CA in rats under normothermia. Our results show that the survival rate decreased gradually post-CA (about 63% at 6 hours, 37% at 1 day, and 8% at 2 days post-CA). Rats were sacrificed at these points in time post-CA, and no neuronal damage was found in the hippocampus until 1 day post-CA. However, some neurons in the stratum pyramidale of the CA region in the hippocampus were dead 2 days post-CA. Iba-1 immunoreactive microglia in the CA1 region did not change until 1 day post-CA, and they were activated (enlarged cell bodies with short and thicken processes) in all layers 2 days post-CA. Meanwhile, GFAP-immunoreactive astrocytes did not change significantly until 2 days post-CA. TNF-α immunoreactivity decreased significantly in neurons of the stratum pyramidale in the CA1 region 6 hours post-CA, decreased gradually until 1 day post-CA, and increased significantly again 2 days post-CA. These findings suggest that low survival rate of normothermic rats in the early period of asphyxia-induced CA is related to increased TNF-α immunoreactivity, but not to neuronal damage in the hippocampal CA1 region.</P>
국내 주요 관심 대상 경제지표가 일반상품무역수지에 미치는 영향
신현대(Hyun-Dai Shin) 한국무역연구원 2013 무역연구 Vol.9 No.3
The purpose of the study is to investigate that the influence of interesting economic indicators on the Trade balance of tangible good in Korea. This study can be used the data from 1990 until 2009 as interesting economic indicators by means of independent variable that gross national income, exchange rate on America, earning per share. At this time, dependent variable is Trade balance of tangible good. In condition that we have got analyzing and researching about variable's change. Due to the researching, the results of study can be summarized in the following. First, considering that statistically, the Exchange rate on America has 'significant positive' effects on Trade balance of tangible good. In other word, when Exchange rate on America increase, Trade balance of tangible good gets a '+' position. It shows us that Trade balance of tangible good gets an ascent or descent with Exchange rate on America gets an ascent or descent. It will be importance relation because of to make a decision relevant on economic to become a wealth or poverty by a country. Second, considering that statistically the Earnings per share has 'significant positive' effects on Trade balance of tangible good too. In other word, when advantage over for Earning per share happen, Trade balance of tangible good gets a '+' position. It shows us that importance of Earning per share as a variable on interesting economic indicator. Third, the Gross national income as a interesting economic indicator has no significant 'positive or negative' effects on Trade balance of tangible good. According to the results it shows the necessity of the recognition about Trade balance of tangible good and interesting economic indicator which is payed attention that it can be important factor as grow and development of countries. So it needs managing, coordinating, controlling.