• Journal of Power Electronics
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• v.16 no.4
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• pp.1621-1628
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• 2016

Experiencing power declines when the secondary coil is at the middle position between two primary coils is a serious problem in segmented on-road charging systems with a single energized segmented primary coil. In this paper, the topological transformation of a primary circuit and a hierarchical compensation capacitor control are proposed. Firstly, the corresponding compensation capacitors and receiving powers of different primary structures are deduced under the condition of a fixed frequency. Then the receiving power characteristics as a function of the position variations in systems with a single energized segmented primary coil and those with double segmented primary coils are analyzed comparatively. A topological transformation of the primary circuit and hierarchical compensation capacitor control are further introduced to solve the foregoing problem. Finally, an experimental prototype with the proposed topological transformation and hierarchical compensation capacitor control is carried out. Measured results show that the receiving power is a lot more stable in the movement of the secondary coil. It is a remarkable fact that the receiving power rises from 10.8W to 19.2W at the middle position between the two primary coils. The experimental are in agreement with the theoretical analysis.

• Journal of Radiation Protection and Research
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• v.42 no.1
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• pp.56-62
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• 2017

Background: To help future generations make accurate value judgments about nuclear power generation and radiation, this study will provide an effective education plan suitable for South Korea by applying and analyzing programs for the understanding of nuclear power within the diversely operated programs in the current Korean education system. Materials and Methods: This study analyzed the difference in educational effects by operating a 13-session regular curriculum for one semester and a one-session short-term curriculum from March to July 2016. Results and Discussion: As a result of operating a 13-session model school and a one-time educational program to analyze behavior changes against the traditional learning model, it was found that all elementary, middle and high school students showed higher acceptability of nuclear power in South Korea. The variation was greater for the model school than the short-term program. Conclusion: To prevent future generations from making biased policy decisions stemming from fear regarding nuclear power, it is necessary to bolster their value judgments in policy decisions by acquiring sufficient information about nuclear power generation and radiation through educational programs.

• Fashion & Textile Research Journal
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• v.8 no.2
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• pp.196-202
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• 2006

In this study the swimwear pattern focused on a typical middle-aged women's body was developed and discussed. To determine the characteristics of a typical middle-aged women's body, their actual bust were cast. According to a generated flattened body surface shell, the right side of pattern was designed considering stretching ratio of swimwear materials as shown in the figure 3. Special features of the developed swimwear pattern are a bust dart, a particularly designed lining, a power-net, and a brassiere-cup. Against a commercial swimwear pattern, the darts were applied to bust area considering its volume. The lining was attached on the entire right side except brassiere part, and power-net was added twice on belly and hip part. As a result, silhouette and body shape were improved. The new brassiere-cup was designed and made to satisfy the middle-aged women's demand about their bust volume. Swimwear fitting test was performed, and it was evaluated. The developed swimwear rated activity, body support, entire silhouette, pressure, comfortable fitting, suitability with body figure, nudity higher by comparison with a commercial swimwear, as shown in the Table 6. Specially the developed swimwear satisfied future customers about a bust, a hip, a waist, a belly area, which the middle-aged women are not confident. Reducing exposure of an armhole and upper leg area, it also satisfied them. New developed swimwear pattern will provide useful reference to swimwear businesses targeting middle-aged women.

• Journal of the Korea Society of Computer and Information
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• v.25 no.5
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• pp.229-241
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• 2020

In this study, we developed a test tool to measure the computational thinking ability of middle school students and investigated their computational thinking power using the tool. The test tool used exploratory factor analysis to examine the computational thinking scales of Korkmaz et al. (2017) and derive suitable factors and questions for middle school students in Korea. The developed test tool was applied to 492 middle school students to analyze differences in computational thinking ability according to gender, grade, programming experience, type of programming language, and interest. According to the study, male Korean middle school students had higher computing power than females. In addition, students who had programming experience or used text-based rather than block-based programming languages demonstrated higher computational thinking. There was no significant difference in the computational thinking of middle school students according to grade, and the level of interest in artificial intelligence only had a slight influence on computational thinking.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09a
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• pp.606-607
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• 2005

• Proceedings of the KIPE Conference
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• 1999.07a
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• pp.680-683
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• 1999

A thyristor controlled shunt compensator, which is installed in the middle of the transmission line is adopted for controlling real power flow in a simple power transmission system. By means on the Fourier series representation of the thyristor switching action and the system parameters, the thyristor current equations are derived, which transmit the required real power of the simple power transmission system and inform the thyristor firing angle, the thyristor conduction angle, the power flows and the harmonic characteristics EMTP simulations at the various operating points show the dynamic characteristics of the thyristor controlled shunt compensator and correspond to the results calculated with the Fourier series representation.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.5
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• pp.99-105
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• 2007

This paper describes the investigation on the spot in relation to electrical safety of electrical installation in elementary middle high school. The investigation was carried out for power receiving system, classroom, chemistry room, music hall and so on. The investigation on the spot was performed by researcher, the related expert, engineer with over fifteen years of industry experience all over the country. As a result of investigation on the spot to 41 schools, common grounding methods at power receiving system were dominant. The risk factors include absence of control box of electric fan, non-installation of earth leakage circuit breaker to power source of experiment stand, use of non-grounding outlet.

• Journal of the Korean Home Economics Association
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• v.32 no.5
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• pp.153-164
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• 1994

The purpose of this study was to investigate the relationship between appearance satisfaction clothing satisfaction body cathexis sociality and achievement motive and to examine how sociality and achievement motive was influenced by socio-economic level grade appearance satisfaction clothing satisfaction and body and body cathexis of middle school boys and girls. the subjects were 297 middle school students in Seoul :139 were boys and 158 girls. The results of the study were as follows: 1. There were significant positive relationships between appearance satisfaction clothing satisfaction body cathexis sociality and achievement motive in boys and girls. 2. Appearance satisfaction body cathexis and achievement motive were significantly higher in body than in girls. Sociality was significantly higher in girls than in boys. 3. In boys appearance satisfaction was influenced by socio-economic level grade, and clothing satisfaction, and the explanatory power by the one variable was 25.8% 4. Sociality was influenced by appearance satisfaction clothing satisfaction and socio-economic lecel in boys and girls. The explanatory powers by the 3 variables were 27.1% in boys and 16.5% in girls. Achievement motive was influenced by grade and appearance satisfaction in boys. The explanatory power by the 2 variables was 13.2% In girls achievement motive was influenced by clothing satisfaction and the explanatory power by the one variable was 10.4%.

• Nuclear Engineering and Technology
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• v.50 no.5
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• pp.780-787
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• 2018

This article presents a security module based on a field programmable gate array (FPGA) to mitigate man-in-the-middle cyber attacks. Nowadays, the FPGA is considered to be the state of the art in nuclear power plants I&C systems due to its flexibility, reconfigurability, and maintainability of the FPGA technology; it also provides acceptable solutions for embedded computing applications that require cybersecurity. The proposed FPGA-based security module is developed to mitigate information-gathering attacks, which can be made by gaining physical access to the network, e.g., a man-in-the-middle attack, using a cryptographic process to ensure data confidentiality and integrity and prevent injecting malware or malicious data into the critical digital assets of a nuclear power plant data communication system. A model-based system engineering approach is applied. System requirements analysis and enhanced function flow block diagrams are created and simulated using CORE9 to compare the performance of the current and developed systems. Hardware description language code for encryption and serial communication is developed using Vivado Design Suite 2017.2 as a programming tool to run the system synthesis and implementation for performance simulation and design verification. Simple windows are developed using Java for physical testing and communication between a personal computer and the FPGA.

• Journal of English Language & Literature
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• v.64 no.2
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• pp.239-252
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• 2018

Many critics on William Faulkner's As I Lay Dying have read Addie Bundren as the disrupter of patriarchal power. By raising a question about the usefulness of language, which is the symbolic power of patriarchy and having an affair with the preacher Whitfield outside her wedlock, Addie directly challenges patriarchal power. From a quite different vantage point, however, we can read Addie as the faithful protector of the norm of whiteness in the South in light of the social hierarchy. As a former school teacher, Addie is from middle class before her marriage. By her marriage to Anse, who is a lower-class white, Addie has class anxiety that her social status in the stratum of whiteness could be degraded from a middle to a lower-class white, "white trash," which means that she is not white enough to be considered as the normative whiteness. Especially, Addie's anxiety increases due to the fact that her lazy husband is reluctant to work and relies on her neighbors, causing her family to be entrapped at the bottom in the stratum of whiteness. Therefore, she decides to take revenge on her husband after giving birth to her second child Darl by asking Anse to bury her dead body in her familial burial site in Jefferson. By rendering her family to suffer the hardship during her funeral procession, not only does she succeed in taking revenge on Anse on the surface, she regains her social status as a middle-class white by being buried in Jefferson fundamentally.