• Journal of the Korean Society of Costume
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• v.52 no.3
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• pp.87-98
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• 2002

The purpose of this research is to investigate the difference on c1othing image evaluation in the ratings between men and women. For this study, pilot test was conducted to 50 clothing majored university students to explore the stimulus of 'cute', 'casual', 'sexy', 'elegant', 'intelligent', 'formal', 'romantic', 'individual', 'refined' for the 9 each image styles from the 32 spring wears in fashion magazine $\ulcorner$FARBE$\lrcorner$(March. 2000). On the basis of the preliminary survey, the question items explored the 15 pairs of polar adjectives as seven-point Likert Scale. The main survey was preceded 94 female and 111 man of university students from March 13 to 24 in 2000, twice for 7-days interval. There were significant differences between the two sexes for each style image ratings. It was found that the female was recorded mote ordinary, stable. refined. superior, plain, like than the male for intelligent style. Meanwhile, the intelligent style was evaluated well on in years by female, but male young. The female tended that elegance style was more stable, warm and less young than the male. The cute style was evaluated more light, tender, feminine, young by the female than the male, find the female looked warm while the male cool. The formal style was more stable, unrefined. solid, unfamiliar dislike, old by the female than the male. The casual style was revealed plain and warm by the female while splendor and cool by the male, the female more active, tender, familiar than the male and individual, attractive and poor quality than the female. The sexy style was evaluated more active, good appearance, young than the female, tender than the male and the female dislike a bit while the male like. The female evaluated the refined style for more stable. refined. superior good appearance and nature than the male. The romantic style was evacuated more like, refined, superior, good appearance nature and familiar by the male, but the female a bit unfamiliar. The individual style was revealed that the female evaluated cool and a bit dislike while the male warm and like, and the male more refined, feminine, young than female.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.1C
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• pp.65-76
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• 2010

Orthogonal frequency division multiplexing (OFDM) is an attractive technique for achieving high-bit-rate wireless data transmission. However, multicarrier systems such as OFDM show great sensitivity to nonlinear distortion. The OFDM structure requires a summation of a large number of subcarriers for multicarrier modulation, and as a result of this summation large signal envelope fluctuations occur. These fluctuations make OFDM systems to be very sensitive to nonlinear distortion introduced by the high power amplifier (HPA) at the transmitter. In this paper, we propose a canonical piecewise-linear (CPWL) model based digital predistorter to compensate for nonlinear distortion introduced by the high peak-to-average power ratio (PAPR) and the HPA in OFDM systems. The performance of the new predistortion scheme for OFDM systems is evaluated in terms of total degradation (TD) and bit error rate (BER). The simulation results demonstrated that the proposed predistorter achieves significant performance improvement by effectively compensating for the nonlinear distortion introduced by the HPA.

• Asia-Pacific Journal of Business
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• v.10 no.1
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• pp.117-133
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• 2019

This paper examines the most-favored-nation treatment clause on the BITs concluded by China and examines the attitudes of China on the application of the most-favored-nation treatment clause to the ISDs by period as the scope of arbitration increases. Moreover, this study pointed out the problems that would be exposed if the most-favored-nation treatment clause applies to ISDs and then also suggested solutions. The conclusions of this study are as follows; if the Chinese government strictly restricts the applicable expansion of the most-favored-nation treatment clause to the dispute settlement procedure by considering only the position of the capital importing country, it implies a contradiction against the development trend of the arbitration system related to international investment disputes. Of course, in order to protect the rights of Chinese investors investing abroad, expanding the applicability of the most-favored-nation treatment clause to the ISDs procedure unconditionally may have a negative impact under China's dual status of being a capital-importing country and a capital-exporting country. Therefore, China should clearly define the scope of application of the most-favored-nation treatment clause, the completion of the local remedy for the host country in cases of BIT to be concluded in the future or amended, and also clearly define that the most-favored-nation treatment clause should not be retroactively applied into BITs already concluded as an exception of applicability of the most-favored-nation treatment.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.10
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• pp.2247-2253
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• 2010

WiBro(Wireless Broadband Internet) is the standard of high-speed portable internet based on OFDMA/TDD (Orthogonal frequency division multiple access / Time division duplexing) techniques, and the subset of consolidated version of IEEE802.16e Wireless MAN standard. In this paper, we propose performance improvements of WiBro system using the LVQ(Learning Vector Quantization) blind equalization. Proposed method used the prefiltering LVQ neural network blind equalization in the Broadband WiBro system receiver. The prefiltering LVQ neural network constellates 16QAM that is transmitter data shape and the blind equalization removes ICI(Inter Carrier Interference). To verificate the proposed method usability, the MSE(Mean Square Error) and the BER(Bit Error Rate) are simulated. The simulation results shown that is improved the performances of the proposed WiBro system using the LVQ blind equalization than the existing WiBro system.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.5
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• pp.1817-1827
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• 2014

As a new type of wireless network, Ad hoc network does not depend on any pre-founded infrastructure, and it has no centralized control unit. The computation and transmission capability of each node are limited. In this paper, a self-updating one-time password mutual authentication protocol for Ad hoc network is proposed. The most significant feature is that a hash chain can update by itself smoothly and securely through capturing the secure bit of the tip. The updating process does not need any additional protocol or re-initialization process and can be continued indefinitely to give rise to an infinite length hash chain, that is, the times of authentication is unlimited without reconstructing a new hash chain. Besides, two random variable are added into the messages interacted during the mutual authentication, enabling the protocol to resist man-in-the-middle attack. Also, the user's identity information is introduced into the seed of hash chain, so the scheme achieves anonymity and traceability at the same time.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.165-171
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• 2011

A Consider the dead man's switch installed in each and every locomotive cab, which support operational safety on railways around the world. The concept is very simple - every 150 to 180 seconds an illuminated push-button demands to be acknowledged so as to know that the Train Driver is alive and active. In the absence of a response over a period of minutes, the vigilance control will automatically apply the train brakes and bring the train to a stand. If we multiply the resetting of the vigilance control 60 times per hour by a 10-hour shift it equals 600 presses of the button during the shift that a Train Driver must pay attention to and acknowledge. This adds a fair bit of pressure on the train driver's job, particularly when he/she is driving through stations, with passengers moving about on platforms in an environment of complex signaling arrangements - all the while looking out for restricting signals. From this perspective, the Vigilance System's demand to be acknowledged every 150/180 seconds is disturbing and can unnecessarily take a driver's attention away from what is happening outside the confines of the cab. A much more dramatic situation can happen when a train driver is driving hour after hour at night when, by Mother's Nature request - people need to sleep. Experience and research shows that the the dead man's switch can be pressed by train driver in a state of deep relaxation and 'micro-sleep'. The vigilance control system which is applied to reduce the drive load considering bio-response multiple unit train is proposed.

• Journal of Electrical Engineering and Technology
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• v.3 no.3
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• pp.430-435
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• 2008

In the paper, an algorithm called a Constraint algorithm is proposed to solve the fan-in problem occurred in ADC encoding circuits. The Flash ADC architecture uses a double-base number system (DBNS). The DBNS has known to represent the multi-dimensional logarithmic number system (MDLNS) used for implementing the multiplier accumulator architecture of FIR filter in digital signal processing (DSP) applications. The authors use the DBNS with the base 2 and 3 to represent binary output of ADC. A symmetric map is analyzed first, and then asymmetric map is followed to provide addition read DBNS to DSP circuitry. The simulation results are shown for the Double-Base Integer Encoder (DBIE) of the 6-bit ADC to demonstrate an effectiveness of the Constraint algorithm, using $0.18{\mu}\;m$ CMOS technology. The DBIE’s processing speed of the ADC is fast compared to the FAT tree encoder circuit by 0.95 GHz.

• Proceedings of the KIEE Conference
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• 2005.05a
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• pp.164-166
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• 2005

In this paper, using ranks of co-occurrence frequency about indices in neighboring pixels, we introduce a new re-indexing scheme for efficiency of index color image lossless compression. The proposed method is suitable for arithmetic coding because it has skewed distributions of small variance. Experimental results proved that the proposed method reduces the bit rates than other coding schemes, more specifically 15%, 54% and 12% for LZW algorithm of GIF, the plain arithmetic coding method and Zeng's scheme.

• 제어로봇시스템학회:학술대회논문집
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• 1987.10a
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• pp.770-775
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• 1987

In this paper, design and development experiences of a vision based robotic assembly system for electronic components are described. Specifically, the overall system consists of the following three subsystems each of which employs a 16 bit Preprocessor MC 68000 : supervisory controller, real-time vision system, and servo system. The three microprocessors are interconnected using the time shared common memory bus structure with hardwired bus arbitration scheme and operated as a master-slave type in which each slave is functionally fixed in view of software. With this system architecture, the followings are developed and implemented in this research; (i) the system programming language, called 'CLRC', for man-machine interface including the robot motion and vision primitives, (ii) real-time vision system using hardwired chain coder, (iii) the high-precision servo techniques for high speed de motors and high speed stepping motors. The proposed control system were implemented and tested in real-time successfully.

• Proceedings of the KIEE Conference
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• 1993.11a
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• pp.338-341
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• 1993

A EEG(ElectroEncephaloGram) compression scheme based on subband coding techniques is presented in this paper. Considering the frequency characteristics of EEG, the raw signal was decomposed into different frequency bands. After decomposition, optimal bit allocation was done by adapting to the standard deviation in each frequency bands, and decomposed signals were quantized using pdf(probability density function)-optimized nonuniform quantizer. Based on the above mentioned coding scheme, coding results of various multichannel EEG signal were shown with compression ratio and SNR(signal-to-noise ratio).