• Bulletin of the Society of Naval Architects of Korea
• /
• v.24 no.2
• /
• pp.55-61
• /
• 1987

The wave system due to a moving submerged body is investigated both theoretically and numerically. Boussinesq equation, which is derived under the assumption that the effects of nonlinearity and wave dispersion are of the same order, is generalized to take the forcing agency into account. Furthermore, under the more restrive assumption that the disturbance is of higher order, inhomogeneous Korteweg-de Vries equation is derived. These equations are solved numerically to obtain the generated wave system and the wave-making resistance. These results are compared with those given by the linear theory.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.615-621
• /
• 2016

This study examines whether there is agency cost in a public R&D subsidy program by applying agency theory. If there is agency cost, the composition ratio of the government subsidy and the firm's own R&D fund would have a significant (-) effect on technological performance. Companies that received a public R&D subsidy in Korea from 2000 to 2009 were selected as a sample. Frequency analysis and multiple regression analysis were used. The independent variables was the ratio of public R&D subsidy cost to the Firm's own R&D cost, and the dependent variables were the number of patent applications and the number of patents registered. The control variables were firm size and R&D cost. The results show that there are agency problems in the government-sponsored R&D system. A future study is needed to examine how much agency problems deteriorate the efficiency of the system.

• The Korean Society of Law and Medicine
• /
• v.11 no.1
• /
• pp.59-84
• /
• 2010

Medical practice is characterized by various physiological response and uncapacity of prediction, therefore when medical accident occur it's hard to prove medical professionals' mistake. Though medical accident by medical professionals' mistake will be compensated anyhow, about irresistible medical accidents, no one should be not bound to compensate, victims get into very difficult situation. So, the nation don't negligent irresistible medical accidents but compensate anyway. As in the past, to the legal principle's constitution of irresistible medical accidents, theory of liability without fault was adapted, and it was said this theory was illogical in theory of liability with fault. But the subject of compensation to irresistible medical accidents is nation, nation don't participate in medical treatment therefore there is no room to occur mistake. And it is not reasonable to regard medical agency as a truster of public service, to cast to it responsibility of medical accidents. The problem of compensation to irresistible medical accidents is understood under the theory of social compensation. Social compensation is consisted of compensation to sacrifice and contribution to nation and society and compensation to sacrifice revealed under danger, the compensation to irresistible medical accidents belongs to the latter. This is near to concept of relief, is applied to national compensation system supplementarily, and compensation have no option but to compensate minimum. And there are not relation between national compensation system of irresistible medical accidents and proof liability transposition and theory of liability with out fault, merely in side of sharing responsibility burden between medical treater and victim, it is reasonable to discuss transportation of proof liability and compulsive liability insurance together.

• The Journal of the Convergence on Culture Technology
• /
• v.6 no.4
• /
• pp.359-370
• /
• 2020

This study tested the roles of public self-consciousness, body surveillance, body shame, and body dissatisfaction based on culture cultivation theory and self-objectification theory with the aim of revealing the psychological mechanisms underlying the influence of media exposure on diet intention. As a result of conducting a survey on 350 women in their twenties and performing structural equation modeling, this study found that media exposure causes public self-consciousness, which increases body surveillance and body shame, thereby increasing body dissatisfaction and thus increasing diet intention. In addition, public self-consciousness indirectly influenced body shame through body surveillance. Body surveillance was found to have an indirect effect on diet intention through body dissatisfaction, whereas body shame had a direct effect on diet intention. Based on the results, we presented theoretical and practical implications of this study and suggestions for future research.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.1
• /
• pp.419-425
• /
• 2023

The research object of this paper is "Yi" and "Yi" in ancient calligraphy theory, as an aesthetic category with oriental characteristics, from Laozhuang philosophy of pre-Qin Dynasty to literature field of literature.The second chapter describes the emergence and development of the concept of "Yi", which has evolved into two concepts in ancient calligraphy and painting theory, namely, the concept of "Yi".In the third chapter, "Yi" is mainly used as an adjective to describe the speed, power and strength of writing, and in the fourth chapter, "Yi" is used to describe the writer's character.Based on the study of ancient sages' calligraphy, this paper attempts to explore the inner spirit of "Yi" and to systematically analyze and summarize the theory of calligraphy and painting.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.6
• /
• pp.779-787
• /
• 2023

Previous research regarding budget analysis has been mostly limited to describing annual changes in defense budgets relative to total budgets without a theoretical background. More empirical defense budget research is needed with better data. This study conducts an empirical analysis of national defense expenditures using Punctuated Equilibrium Theory (PET). The purpose of this study is to examine trends in the Republic of Korea's (ROK) functional defense budgets (total defense budget, force operation budget, force improvement budget) and to identify and analyze radical points of change in the defense budget using punctuated equilibrium theory. This study also explores trends and punctuations in the national defense budgets using annual defense budget data from the ROK for every year from 1998 to 2017. This study finds that from 1998 to 2017 the spending pattern of the total defense budget in the ROK was characterized by 19 years of stable growth and a one-time punctuation (5.0%). The force operation budget exhibited stable growth in eighteen years and was punctuated twice (10%). The force improvement budget was punctuated five times.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.7 no.2
• /
• pp.9-17
• /
• 2012

This paper integrates elements from the theory of agency, the entrepreneurship education, the start-up policies. Entrepreneurship education is demanded to enhance success of business candidate for business establishment and to increase start-up survival. Three researches are made by this study. First of all, Educational performance is measured and it explains why linked policies is needed. To explain linked performance, this paper introduces several hypothesis. These are about a rate of start-up failure caused by agency problem and a rate of education effect decreasing agency problem. Secondly, operation performance of it can be increased by linking among policies and should be for the original goals of start-up policies. Finally, several ideas including start-up certification is proposed. Start-up certification has role of contact point of different entrepreneurship policies. As a result, level of satisfaction of policies will increase and specially of education program by linked effects.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.21 no.9
• /
• pp.955-964
• /
• 2010

In this paper, a compensation method of the amplitude and phase errors from the T/R(Transmit/Receive) modules in an active SAR(Synthetic Aperture Radar) system is introduced. The errors are defined and classified, and characterized by analyzing the measurement data acquired from the pilot test. To compensate these errors, a control methodology of T/R modules output is proposed. Before the compensation is applied, 16 T/R modules integrated on the active SAR antenna show the amplitude in 28.2~29.0 dBm and the phase in $101.7^{\circ}{\sim}165.2^{\circ}$. After the compensation, the amplitude and phase are distributed in 27.4~28.0 dBm and $116.1^{\circ}{\sim}120.0^{\circ}$ respectively. The antenna beam patterns generated by the array theory with the distributions are compared, and the proposed method is verified as good to apply for the active SAR system.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.29 no.4
• /
• pp.308-315
• /
• 2018

In this paper, we present the basic design results for high-resolution radar development at S-band frequency that can precisely measure the miss distance between two targets. The basic system requirement is proposed for the design of a 3.5 GHz linear frequency-modulated (LFM) radar with maximum detection distance and distance resolution of 2 km and 1 m, respectively, and the specifications of each module are determined using the radar equation. Our calculations revealed a signal-to-noise ratio ${\geq}30dB$ with a bandwidth of 150 MHz, transmission power of 43 dBm for the power amplifier, gain of 26 dBi for the antenna, noise figure of 8 dB, and radar cross-section of $1m^2$ at a target distance of 2 km from the radar. Based on the calculation results and the theory and method of LFM radar design, the hardware was designed using software defined radar technology. The results of the subsequent field test are presented that prove that the designed radar system satisfies the requirements.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.47 no.12
• /
• pp.897-903
• /
• 2019

This paper represents an simplified design method of hybrid composites. The proposed method is very simple compared to conventional design approaches and easy to apply to practical design problems. The method is based on not complex optimization approaches but conventional theories. The equivalent dielectric properties concept and multi-layered dielectric slab theory are an important theoretical background of the proposed method. This approach divide the design domain into several domain which have theoretically different electro- agnetic functionality. Then, the domains are expressed by equivalent dielectric properties. Numerical analysis are performed several types of design candidates. S-parameter test for final design was conducted for validate the proposed approach indirectly.