• Journal of Korean Classical Literature and Education
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• no.15
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• pp.501-521
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• 2008

For bringing about a revolution in studying the classic literature the positivism must be overcome and the imaginative power about the history, literature and religion must be exercised. The theme of the monk-mask-play had been interpreted from the both viewpoint; the traditional mask play is the profane drama, but, on the other hand, it is the sacred drama. Judging from the social viewpoint, the sexual union of the old monk and the beauty symbolizes the reconciliation between the governing class and the production class. Judging from the viewpoint of the equalitarianism, that symbolizes the harmony of a masculinity and a femininity. Judging from the viewpoint of the education, that symbolizes the unification of reason and sensitivity. Judging from the viewpoint of the religion, that means the resurrection.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.10
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• pp.171-180
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• 2013

Generally, when we apply zernike moments value for matching, we can use those moments value obtained from projecting image information under circumscribed circle to zernike basis function. However, the problem is that the power of discrimination can be reduced because hand images include lots of overlapped information due to its special characteristic. On the other hand, when distinguishing hand poses, information in specific area of image information except for overlapped information can increase the power of discrimination. In this paper, in order to solve problems like those, we design R3 ring mask by combining image obtained from R2 ring mask, which can weight information of the power of discrimination and image obtained from R1 ring mask, which eliminate the overlapped information. The moments which are obtained by R3 ring mask decrease operational time by reducing dimension through principle component analysis. In order to confirm the superiority of the suggested method, we conducted some experiments by comparing our method to other method using seven different hand poses.

• Journal of Convergence for Information Technology
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• v.11 no.11
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• pp.288-295
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• 2021

This study was conducted to investigate the effect of end paper adsorbed with mask pack active ingredients on hair during permanent wave treatment. Permanent wave was performed with purchasing mask packs containing green tangerine, collagen, and Houttuynia cordate active ingredients among commercially available mask packs and adsorbing them to the end paper. As experimental methods, hair thickness, hair moisturizing power, tensile strength, hair epidermis observation using SEM, and hair constituent element analysis using EDS were performed. As a result of the experiment, it was confirmed that the experimental group treated with Houttuynia cordate active ingredient on the end paper had a hair protection effect as a result of hair thickness, tensile strength, hair epidermis observation, and hair component analysis. In addition, it was confirmed that the experimental group treated with green tangerine active ingredient on the end paper contained a relatively large amount of moisture in the hair moisturizing power test result. It is hoped that the development and research of various materials and tools will proceed so that basic cosmetic products containing active ingredients can be developed and used as hair cosmetics, and applied during chemical treatment in the industrial field.

• Journal of the Korean Physical Society
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• v.73 no.9
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• pp.1346-1350
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• 2018

An electrode-evaporation technology on both the top and bottom sides of the bare vertical-type single chip separated from the traditional substrate by cooling, was developed for III-nitride vertical-type single chip LEDs with thick GaN epilayer. The post-process of the cooling step was followed by sorting the bare vertical-type single chip LEDs into the holes in a pocket-type shadow mask for deposition of the electrodes at the top and bottom sides of bare vertical-type single chip LEDs without the traditional substrate for electrode evaporation technology for vertical-type single chip LEDs. The variation in size of the hole between the designed shadow mask and the deposited electrodes owing to the use of the designed pocket-type shadow mask is investigated. Furthermore, the electrical and the optical properties of bare vertical-type single chip LEDs deposited with two different shapes of n-type electrodes using the pocket-type shadow mask are investigated to explore the possibility of the e-beam evaporation method.

• The Journal of the Acoustical Society of Korea
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• v.38 no.6
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• pp.716-723
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• 2019

Fingerprint matching accuracy is essential in deploying a music search service. This paper deals with a method to improve fingerprint matching accuracy by utilizing an auxiliary information which is called power weight. Power weight is an expected robustness of each hash bit. While the previous power mask binarizes the expected robustness into strong and weak bits, the proposed method utilizes a real-valued function of the expected robustness as weights for fingerprint matching. As a countermeasure to the increased storage cost, we propose a compression method for the power weight which has strong temporal correlation. Experiments on the publicly-available music datasets confirmed that the proposed power weight is effective in improving fingerprint matching performance.

• Journal of Korean Ophthalmic Optics Society
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• v.13 no.4
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• pp.9-12
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• 2008

Purpose: Current gas-mask is very uncomfortable structure for spectacles wearer. Improving this problem can aid military men and firemen to protect themselves and rescue other person. Methods: we changed the structure from dual type of outward lens and inward lens into a single type structure. we attached acrylic frame to gas-mask instead of outward lens and protected the gas inflow by shutting the gab of lens and frame using silicon shield, and made the frame "S" style for removing astigmatism and maintaining of vertex distance. Results: It was possible to correct visual acuity and gas shield, and could changed the lens like a common spectacles. The new type of gas-mask spectacles could remove 0.53D~1.78D astigmatism occurred from the slant of eyesight and lens surface, 0.07D~0.66D overcorrection occurred from short vertex distance, and 0.1D~0.3D astigmatism occurred from pantoscopic angle. Conclusion: Because new type of gas-mask spectacles had clear visual field, it was expected to improve fighting power and rescue ability.

• Journal of the Korean Institute of Telematics and Electronics
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• v.18 no.4
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• pp.34-42
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• 1981

A 512-bit Task Programmable ROM has been designed and fabricated using PMOS technology. The content of the memory was written through the gate pattern during the fabrication process, and was checked by displaying the output of the chip on an oscilloscope with 512(32$\times$16) matrix points. The operation of the chip was surcessful with operating voltage from -6V to -l2V, The power consumption and propagation delay time have been measured to be 3mW and 13 $\mu$sec, respectively at -6 Volt. The power consunption increased to 27mW and propagation delay time decreased to 3$\mu$sec at -12V. The output of the chip was capable of driving the input of a TTL gate directly and retained a high impedence state when the chip solect function disabled the output.

• Bulletin of the Korean Chemical Society
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• v.35 no.3
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• pp.705-708
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• 2014

We demonstrate the blue InGaN/GaN multiple quantum wells light-emitting diodes (LEDs) with an embedded air-gap photonic crystal (PC) which was fabricated by the lateral epitaxial overgrowth of GaN layer on the tungsten (W) nano-masks. The periodic air-gap PC was formed by the chemical reaction of hydrogen with GaN on the W nano-mask. The optical output power of LEDs with an air-gap PC was increased by 26% compared to LEDs without an air-gap PC. The enhanced optical output power was attributed to the improvement in internal quantum efficiency and light extraction efficiency by the air-gap PC embedded in GaN layer.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.233-233
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• 2010

Magnetic random access memory (MRAM), based on magnetic tunnel junction (MTJ) and CMOS, is a prominent candidate among prospective semiconductor memories because it can provide nonvolatility, fast access time, unlimited read/write endurance, low operating voltage and high storage density. The etching of MTJ stack with good properties is one of a key process for the realization of high density MRAM. In order to achieve high quality MTJ stack, the use of CoFeB and IrMn magnetic films as free layers was proposed. In this study, inductively coupled plasma reactive ion etching of CoFeB and IrMn thin films masked with Ti hard mask was investigated in a $Cl_2$/Ar gas mix. The etch rate of CoFeB and IrMn films were examined on varying $Cl_2$ gas concentration. As the $Cl_2$ gas increased, the etch rate monotonously decreased. The effective of etch parameters including coil rf power, dc-bais voltage, and gas pressure on the etch profile of CoFeB and IrMn thin film was explored, At high coil rf power, high dc-bais voltage, low gas pressure, the etching of CoFeB and IrMn displayed better etch profiles. Finally, the clean and vertical etch sidewall of CoFeB and IrMn free layers can be achieved by means of thin Ti hard mask in a $Cl_2$/Ar plasma at the optimized condition.

• Journal of Communications and Networks
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• v.5 no.4
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• pp.344-353
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• 2003

Ultra-wideband (UWB) technology is gaining increasing interest for its potential application to short-range indoor wireless communications. Utilizing ultra-short pulses, UWB baseband transmissions enable rich multipath diversity, and can be demodulated with low complexity receivers. Compliance with the FCC spectral mask, and interference avoidance to, and from, co-existing narrow-band services, calls for judicious design of UWB pulse shapers. This paper introduces pulse shaper designs for UWB radios, which optimally utilize the bandwidth and power allowed by the FCC spectral mask. The resulting baseband UWB systems can be either single-band, or, multi-band. More important, the novel pulse shapers can support dynamic avoidance of narrow-band interference, as well as efficient implementation of fast frequency hopping, without invoking analog carriers.