• 방재와보험
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• s.46
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• pp.73-75
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• 1990

화재로 인한 인명 및 재산상의 손실을 예방하고 신속한 재해복구와 인명피해에 대한 적정한 보상을 하게 함으로써 국민생활의 안정에 기여하게 함을 목적으로 1973년 2월 6일 법률 제 2482호로 공포된 "화재로 인한 재해보상과 보험가입에 관한 법률"에 의거 서울특별시, 5개직할시 및 전주시에 소재한 특수건물(4층 이상건물, 국유건물, 교육시설, 백화점, 시장, 의료시설, 흥행장, 숙박업소, 송장, 송동주택 등) 소유자는 "신체손해배생 특약부 화재보험" 에 의무적으로 가입토록 되어있다. 이밖에도 국가저액적으로 또는 국민 복지증진을 위하여 많은 종류의 의무보험을 실시하고 있으며, 특히 위 법률과 유사한 사례로 국내에는 "항공운송 사업진흥법" (제7조), "산림법" (제113조)에 보험가입에 대한 의무규정이 있다. 일본 동경해상화재보험(주)에서 발간한 "손해보험과 시장"과 영국에서 발간한 "Handbook of risk management"에 의하면 거의 대부분의 국가에서 책임보험등 의무보험제도를 실시하고있으며, 특히 스위스, 서독, 벨기에, 아이슬란드, 브라질에서는 특수건물 화재보험과 유사하게 건물에 대한 의무보험제도를 실시하고 있는데 이들 국가중 스위스에서는 이미 180여년전부터 26개 주 중 19개 주에서 모든 건물에 대하여 화재보험 가입을 의무화하고 있으며, 그 수용동산까지도 화재보험에 부부토록 강제화되어 있는 주도 있다. 한편 서독에서도 오래전부터 건물의 화재보험 가입을 의무화하고 있는 주가 많으며, 의무화를 실히하고 있지 않은 주도 보험가입은 임의적이나 가입시에는 반드시 주가 지정한 공영건물보험기관에 가입토록 하는 독접형태로 운영되고 있다. 따라서 외국의 의무보험 실태를 보다 구체적으로 파악해 보기 위하여 스위스 바젤주(Basel- Stadt- Kantons)의 건물보험법을 소개하고자 한다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.23 no.10
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• pp.1212-1215
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• 2012

This study describes the accuracy improvement of the estimated angle using phase averaging in phase-comparison monopulse algorithm. In addition, to compensate the time-delay due to the phase averaging, we propose the time-delay compensation algorithm which uses the derivative of the estimated angle. These derivative is calculated by the curve fitting method. Using the real radar interferometer, we have verified that the phase averaging and time-delay compensation algorithms are effective in real-time signal processing application.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.4
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• pp.499-508
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• 1993

This paper has dealt with the design methods and the analysis of frequency characteristics for the power splitters with ferrite toroids, which are extensively used in CATV and/or MATV systems. The theoretical design methods and frequency characteristics of the prototype Wilkinson's 2-way power divider have been reviewed in lumped-element circuits form. On the basis of the design theory of the prototype Wilkinson's power divider, the method compensating of the prototype Wilkinson's power divider has been proposed by means of adding matching transformers. Thus, it has been shown that the theoretical frequency characteristics of the compensated power splitter are improved drastically in comparison with the prototype Wilkinson's power divider. Furthermore, the practical measurements of the frequency characteristics for the fabricated circuits show agreements with the theoretical results, and hence, the validity of the proposed design and analysis methods has been confirmed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.3
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• pp.126-133
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• 2003

This paper is related to a morphological segmentation method for extracting the moving object in video sequence using global motion compensation and two-dimensional spatio-temporal entropic thresholding. First, global motion compensation is performed with camera panning vector estimated in the hierarchical pyramid structure constructed by wavelet transform. Secondly, the regions with high possibility to include the moving object between two consecutive frames are extracted block by block from the global motion compensated image using two-dimensional spatio-temporal entropic thresholding. Afterwards, the LUT classifying each block into one among changed block, uncertain block, stationary block according to the results classified by two-dimensional spatio-temporal entropic thresholding is made out. Next, by adaptively selecting the initial search layer and the search range referring to the LUT, the proposed HBMA can effectively carry out fast motion estimation and extract object-included region in the hierarchical pyramid structure. Finally, after we define the thresholded gradient image in the object-included region, and apply the morphological segmentation method to the object-included region pixel by pixel and extract the moving object included in video sequence. As shown in the results of computer simulation, the proposed method provides relatively good segmentation results for moving object and specially comes up with reasonable segmentation results in the edge areas with lower contrast.

• Journal of radiological science and technology
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• v.38 no.1
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• pp.17-21
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• 2015

Total body irradiation(TBI) and chemotherapy are the pre-treatment method of a stem cell transplantations of the childhood leukemia. in this study, we evaluate the Quantitative human body dose prior to the treatment. The MCNPX simulation program evaluated by changing the material of the tissue compensators with imitation material of pediatric exposure in a virtual space. As a result, first, the average skin dose with the material of the tissue compensators of Plexiglass tissue compensators is 74.60 mGy/min, Al is 73.96 mGy/min, Cu is 72.26 mGy/min and Pb 67.90 mGy/min respectively. Second, regardless of the tissue compensators material that organ dose were thyroid, gentile, digestive system, brain, lungs, kidneys higher in order. Finally, the ideal distance between body compensator and the patient were 50 cm aparting each other. In conclusion, tissue compensators Al, Cu, Pb are able to replace of the currently used in Plexiglass materials.

• Journal of Korean Society of Transportation
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• v.26 no.1
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• pp.65-78
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• 2008

After the railway reform in 2004, Korea National Railroad was divided into two separate organizations. The Korea Railway Network Authority is responsible for the construction of new line. Korea Railroad corporation is a public-owned railway operator. The compensation for the loss of rail operator from the Public Service Obligation(PSO) observance is specified in the Law of Rail Industry Development No.32, No.33. However, it is necessary to revise the compensation criteria of PSO after the actual enforcement of the law for more efficient rail operation. This study aims for revising compensation criteria of PSO. In this study, we suggested a revised compensation criteria. The scope of compensation for the loss of regional line operation was adjusted by new criteria considering the characteristics and the business results of the line. The compensation rate is linked with the actual business results of the line for giving motivation to the rail operator.

• The KIPS Transactions:PartB
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• v.8B no.5
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• pp.557-564
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• 2001

In general, several moving regions with different motions coexist in a block located on motion boundaries in the block-based motion estimation. In this case the motion compensation error(MCEs) are different with the moving regions. This is inclined to deteriorate the quality of motion compensated images because of the inaccurate motions estimated from the conventional mean absolute error(MAE) based matching function in which the matching error per pixel is accumulate throughout the block. In this paper, we divided a block into the regions according to their motions using the motion information of the spatio-temporally neighboring blocks and calculate the average MCF for each moving mentioned. From the simulation results, we showed the improved performance of the proposed method by comparing the results from other methods such as the full search method and the edge oriented block matching algorithm. Especially, we improved the quality of the motion compensated images of blocks on motion boundaries.

• The Transactions of the Korean Institute of Power Electronics
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• v.16 no.6
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• pp.610-617
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• 2011

This paper proposes a novel and direct dead-time compensation method of the 3-phase inverter using space vector pulse width modulation(SVPWM) topology. The proposed dead-time compensation method directly compensates the dead-time to the turn-on time of the effective voltage vector according to the current direction of the medium voltage reference. Each phase voltages are determined by the switching times of the effective voltage vectors, and the practical switching times have loss according to the current direction by the dead-time effect in the 3-phase inverter. The proposed method adds the dead-time to the switching time of the effective voltage vector according to the current direction, so it does not require complex d-q transform and controller to compensate the voltage error. The proposed dead-time compensation scheme is verified by the computer simulation and experiments of 3-phase R-L load.

• The Journal of the Acoustical Society of Korea
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• v.28 no.1
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• pp.77-83
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• 2009

This paper proposes a new noise-biased compensation of minimum statistics(MS) method using a nonlinear function and a priori speech absence probability(SAP) for speech enhancement in non-stationary noisy environments. The minimum statistics(MS) method is well known technique for noise power estimation in non-stationary noisy environments. It tends to bias the noise estimate below that of true noise level. The proposed method is combined with an adaptive parameter based on a sigmoid function and a priori speech absence probability (SAP) for biased compensation. Specifically. we apply the adaptive parameter according to the a posteriori SNR. In addition, when the a priori SAP equals unity, the adaptive biased compensation factor separately increases ${\delta}_{max}$ each frequency bin, and vice versa. We evaluate the estimation of noise power capability in highly non-stationary and various noise environments, the improvement in the segmental signal-to-noise ratio (SNR), and the Itakura-Saito Distortion Measure (ISDM) integrated into a spectral subtraction (SS). The results shows that our proposed method is superior to the conventional MS approach.

• Journal of Creative Information Culture
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• v.5 no.2
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• pp.173-182
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• 2019

Recently, creative teaching methods have received a lot of attention in the university community. Creative teaching methods can maximize the effectiveness of the creative education through the voluntary participation of students. One of the most important skills in creative teaching methods is communication because many students are passive in their real classes. An economic reward system helps to improve students' communication skills because it motivates students to study harder. Therefore, a blockchain media based on an economic reward system can be useful teaching tools. This paper proposes a creative teaching method using blockchain media to improve communication skills. The proposed method consists of eight steps, and it was applied to classes for the last three years. The results show that the proposed method helps students improve their communication skills.