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배익수,윤혁권 한국세무회계학회 2004 세무회계연구 Vol.14 No.-
본 연구는 선행연구를 통하여 회계정보시스템의 환경요인과 정보요인을 식별하였으며, 이러한 요인이 회계정보시스템의 성과인 회계정보 환경요인, 회계정보 정확요인, 회계정보력 요인에 어떻게 영향을 미치는지에 대하여 실종분석을 통하여 규명하였다. 이에 따라 본 연구의 목적은 다음과 같이 규명하였다. 첫째, 선행연구를 통하여 회계정보 시스템의 환경요인과 정보요인을 찾아내고 둘째, 회계정보의 성과요인을 선행연구를 통해 찾았으며 셋째, 회계정보 시스템의 환경과 정보요인이 성과요인에 미치는 인과간계를 실증분석을 통하여 검정하고 이를 근거로 유통기업이 회계정보시스템을 도입하여 회계정보의 성과를 창출하는데 중요 요인을 제시하는데 그 목적을 두었다. 이러한 연구의 목적을 달성하기 위하여 각 요인별 가설을 설정하고 이를 실종분석 하였는데 연구가설에 대한 실종분석의 결과를 요약하면 다음과 같다. 첫째, 회계정보시스템의 환경요인이 회계정보 활용에 정(+)의 영향을 둘째, 회계정보시스템의 정보요인이 회계정보 활용에 정(+)의 영향을 셋째, 회계정보시스템의 정보요인이 회계정보 정확에 정(+)의 영향을 미치는 것으로 나타났으나 넷째, 회계정보시스템의 환경요인이 회계정보 정확에 정(+)의 영향을 다섯째, 회계정보시스템의 환경요인이 회계정보력에 정(+)의 영향을 여섯째, 회계정보시스템의 정보요인이 회계정보력에 정(+)의 영향을 미치지 못하는 것으로 나타났다. 그러므로 유통기업에서 회계정보 활용의 효율성을 높이기 위해서는 회계정보시스템의 환경요인과 정보요인을, 회계정보의 정확성을 높이기 위해서는 회계정보시스템의 정보요인이 중요한 것으로 나타났다. 이러한 연구의 결과를 토대로 하여 유동기업이 합리적인 회계정보시스템을 도입하는데 도움이 되기를 기대코자 한다. This study is through the preceding research between an environmental cause and an informational cause of the Account Information System(Next will be appear AIS). And it was examined with empirical analysis about how this cause has influences on a practical using cause of account information, a precision cause of account information, and a cause of the power of account information that is a result of the AIS. Accordingly, the object of this study will suggest next. First, it is through the preceding research between an environmental cause and informational cause of the AIS. Second, a result cause of the AIS searches for the preceding research. Third, it was examined about environmental cause and informational cause of the AIS has influence on the relation of cause and effect with empirical analysis. In accordance with, the object of this study is a distributional company inducted the AIS creates a result of account information. In order to achieve the object of this study it was established a hypothesis and analyzed empirically. A condensation of an empirical analysis about this assumption will suggest next. Above all it was approved it has plus effect first, an environmental cause of the AIS has influence on the practical using account information, second, an informational cause of the AIS has influence on the practical using account information, third, an informational cause of the AIS has influence on the precision account information. However it was approved it has not plus effect forth, an environmental cause of the AIS has influence on the precision account information, fifth, an environmental cause of the AIS has influence on the power of account information, sixth, an informational cause of the AIS has influence on the power of account information. Consequently, the distributional company is to raise efficiency of a practical using of account information has to lead an environmental cause and informational cause of the AIS. In the same manner, it is to raises on the precision account information has to lead an informational cause of the AIS. It was anticipated within this study could give an assistance to the distributional company induct AIS rationally.
조성환,손화영,김혜성,최종윤,류시윤,박배근,윤원기,홍성혁,김덕환 충남대학교 수의과대학 동물의과학연구소 2002 動物醫科學硏究誌 Vol.10 No.-
Pilomatricoma was histopathologically diagnosed in a 2.5-year-old male Alaskan malamute. The patient was referred to Chungnam National University, Veterinary Medical Teaching Hospital with solitary, firm and well-circumscribed mass at shoulder. Grossly, the mass was dome shaped to tumor like and 10 x 8 x 5㎝ in size. Some lesions had gritty or bony consistency and was chalky when sectioned Histopathologic feature included mumerous clusters of tightly arranged, basaloid cells with evenly distributed chromatin and ghost cells were characterized by a central unstained zone. The ghost cells often become calcified and osseous metaplasia was also present.
Bae, Yoon Hyeok,Kim, Moo-Hyun Techno-Press 2013 Ocean systems engineering Vol.3 No.4
More FOWTs (floating offshore wind turbines) will be installed as relevant regulations and technological hurdles are removed in the coming years. In the present study, a numerical prediction tool has been developed for the fully coupled dynamic analysis of FOWTs in time domain including aero-loading, tower elasticity, blade-rotor dynamics and control, mooring dynamics, and platform motions so that the influence of rotor-control dynamics on the hull-mooring performance and vice versa can be assessed. The developed coupled analysis program is applied to Hywind spar design with 5 MW turbine. In case of spar-type floaters, the control strategy significantly influences the hull and mooring dynamics. If one of the control systems fails, the entire dynamic responses of FOWT can be significantly different. Therefore, it is important to maintain various control systems in a good operational condition. In this regard, the effects of failed blade pitch control system on FOWT performance including structural and dynamic responses of blades, tower, and floater are systematically investigated. Through this study, it is seen that the failure of one of the blade pitch control system can induce significant dynamic loadings on the other blades and the entire FOWT system. The developed technology and numerical tool are readily applicable to any types of floating wind farms in any combinations of irregular waves, dynamic winds, and steady currents.
배윤혁(Yoon Hyeok Bae),조일형(Il-Hyoung Cho) 한국해양공학회 2013 韓國海洋工學會誌 Vol.27 No.5
In the present investigation, the hydrodynamic characteristics of a vertically floating hollow cylinder in regular waves have been studied. The potential theory for solving the diffraction and radiation problem was employed by assuming that the heave response motion was linear. By using the matched eigenfunction expansion method, the characteristics of the exciting forces, hydrodynamics coefficients, and heave motion responses were investigated with various system parameters such as the radius and draft of a hollow cylinder. In the present analytical model, two resonances are identified: the system resonance of a hollow cylinder and the piston mode resonance in the confined inner fluid region. The piston resonance mode is especially important in the motion response of a hollow circular cylinder. In many cases, the heave response at the piston resonance mode is large, and its resonant frequency can be predicted using the empirical formula of Fukuda (1977). The present design tool can be applied to analyze the motion response of a spar offshore structure with a moon pool.
A DC-to-12.5 Gb/s 9.76 mW/Gb/s All-Rate CDR With a Single <i>LC</i> VCO in 90 nm CMOS
Yoon, Jong-Hyeok,Kwon, Soon-Won,Bae, Hyeon-Min IEEE 2017 IEEE journal of solid-state circuits Vol.52 No.3
<P>A dual-lane DC-to-12.5 Gb/s all-rate clock and data recovery (CDR) IC with a single LC voltage-controlled oscillator is fabricated in a 90 nm CMOS. An all-rate clock divider with an asynchronous phase calibration scheme is employed to generate all-rate clock signals without a phase mismatch or duty cycle distortion. The IC features an automatic loop gain control scheme that adjusts the bandwidth of a CDR in the background for optimal bit error rate (BER) performance by monitoring the phase difference between the incoming data and the recovered clock signal. The proposed CDR consumes 244 mW at 12.5 Gb/s under dual-lane operation with an input sensitivity of 12 mV(pp), (diff). The CDR supports referenceless allrate operation with a BER < 10(-12) on PRBS31 and compensates for 20 dB of channel loss using a continuous-time linear equalizer (CTLE), a one-tap decision feedback equalizer (DFE), and a three-tap pre-emphasis filter. The power efficiency of the test chip is 9.76 mW/Gb/s.</P>