• Korea Trade Review
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• v.43 no.5
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• pp.93-113
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• 2018

The purpose of the study is to investigate whether monetary and non-monetary incentives of exports incentives affect the formation of trust between exporters and importers. Data was collected from 110 Korean SMEs(small and medium-sized enterprises) that were engaged in exporting. 'Three hypotheses were proposed and tested using the data collected. Findings include monetary incentives are not related to trust, but non-monetary incentives are positively related to trust. The findings suggest that exporters should focus on non-monetary incentives, rather than monetary incentives, to build trust with importers. Non-monetary incentives signal that exporters intend to have long-term relationship with importers, but monetary incentives do not. Trust was also found to mediate the relationship between non-monetary incentives and importer' role performance. Non-monetary incentives affect importer's role performance through trust formed between importer and exporter.

• Management & Information Systems Review
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• v.31 no.1
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• pp.117-147
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• 2012

The role of middle managers in local administrative organizations is getting important in showing administrative capacity of public officials who are members, enhancing effectiveness and competitiveness of an organization. The main purpose of this paper is to investigate the effects of demographic characteristics as well as the mediating effects of organizational culture between leadership of middle managers and organizational effectiveness such as job satisfaction and organizational commitment using the sample from local administrative organizations of Kangwon province. Results of empirical study are summarized. In final suggestions, implications and some limitations of the present study are discussed as well.

• KDI Journal of Economic Policy
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• v.33 no.2
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• pp.41-79
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• 2011

This study examines the compensation scheme for the executives and risk-taking behavior in the Korean banks. Theoretically, shareholders prefer risky asset choice to the optimal one due to the limited liability feature of reward, and stock-based executive compensation may induce choices favorable to the shareholder. We empirically test this risk-taking hypothesis using Korean banks' data. Since only the stock option data is available under the current disclosure system, we limit our analysis to examine the relationship between the compensation through stock option and the risk of banks. The result provides no evidence that stock option compensations increase the risk of banks, which is contrary to the theoretical prediction and preceding studies in the US. This may be due to any factor that the executive reward data omit, or regulation effects on the bank management.

• Korean Journal of Optics and Photonics
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• v.17 no.5
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• pp.447-454
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• 2006

We obtained analytic solutions of boundary conditions to the stable region of Z-fold $Cr^{4+}$ : YAG laser cavity when the conditions are with and without thermal tensing effect. Also we investigated the influence of the thermal tensing effect on the stability of cavity, beam waist, and astigmatic compensation using aberration transformation matrices. The thermal tensing effect almost has no influence on the stable region of the cavity when the crystal is located in the middle of two concave mirrors and when the distances from the concave mirror to the reflecting mirror and the output coupler are the same. The beam waist, however, is affected more in a tangential plane than in a sagittal plane, and so it is difficult to have astigmatic compensation when the thermal tensing effect exists. This result means that the thermal tensing effect should be considered even for the Kerr-lens mode-locking.

• Journal of Advanced Navigation Technology
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• v.27 no.4
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• pp.457-462
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• 2023

We proposed a flexible link configuration in a system combining mid-span spectral inversion (MSSI) and dispersion management used for long-distance transmission of high-capacity optical signals such as wavelength division multiplexing signals, and examined specific methods to increase chromatic dispersion and nonlinear distortion compensation effects. The dispersion map proposed to increase the flexibility of dispersion-managed link configuration has a 'random-inverse' structure. That is, in the proposed dispersion map, the residual dispersion per span (RDPS) of each fiber span in the first half section up to the optical phase conjugator is randomly distributed, and the RDPS distribution in the second half section reverses the distribution pattern of the first section. Although the proposed dispersion map has a random distribution of RDPS, it was confirmed that the distortion compensation effect is improved due to the fact that the dispersion profile is symmetrical with respect to the optical phase conjugator. In the dispersion map of the 'random-inverse' configuration, it was also confirmed that the compensation effect of the distorted wavelength division multiplexing signal becomes improved when the magnitude of the RDPS allocated to each fiber span is large.

• Journal of IKEEE
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• v.4 no.2 s.7
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• pp.225-232
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• 2000

Dead time which is inserted in PWM signals of VSI distorts the inverter output voltage waveforms and deteriorate the control performance of an induction machine by producing torque ripples. In this paper, dead time compensation method in a vector controlled induction machine is proposed. The method is based on a feedforward approach that compensates dead time effect by adding the compensating voltages to the inverter output voltage references in 2 phase stationary frame. The proposed method is only software intensive and easy to realize without additional hardware. The experimental results show the validity and effectiveness of the proposed method.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10b
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• pp.538-540
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• 2000

본 논문에서는 적응적인 웨이블릿 변환에 기초한 저속 비트율 비디오 코딩 방법의 새로운 알고리즘을 제안한다. 접근 방법은 양자화된 웨이블릿 계수들이 웨이블릿 서브밴드 구조내에서 중복성을 활용하는 메커니즘에 의해서 전처리 된다면 코딩 절차가 더욱 효과적으로 나타난다. 그러므로 본 논문에서는 코딩부분의 최적화 활동에 초점을 맞추어 완전한 중복 블록 움직임 보상된 에어프레임에서 일치를 확보하기 위해 이용하고, 향상된 코사인 윈도우를 적용하였다. 또한 웨이블릿 변환은 각 일치한 움직임 보상된 에러 프레임을 전체적인 에너지 컴팩션에 도달하도록 적용된다. 움직임 벡터의 수평적, 수직적 컴포넌트는 적응적 산술적 코딩을 사용하여 독립적으로 인코드되는 반면에 의미있는 웨이블릿 계수는 적응적 산술 코딩을 사용함에 의해서 비트-플레인 순서로 인코드된다. 제안된 부호기는 28Kbits에서 PSNR이 평균적으로 각각 대략 2.07과 1.38dB에 존재하는 H.263과 ZTE를 초과한다. 전체순서 코딩에 대하여도 3DWCVC 방법은 평균적으로 각각 0.35와 0.71dB을 나타내는 H.263과 ZTE보다 우수한 성능을 보인다.

• 한국벤처창업학회:학술대회논문집
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• 2023.04a
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• pp.45-50
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• 2023

본 논문은 스타트업과 벤처기업의 임직원이 상장후 적법한 절차에 따라 스톡옵션 행사를 하였지만, 주식시장의 주가에 악영향을 미치며 일반투자자 피해가 발생하여 도덕적 해이 논란이 촉발되었고 이 문제에 대해 정부 규제당국이 직접적인 추가규제를 예정하고 있는 상황에서 주식매수선택권제도(Stock Option, 이하 스톡옵션)의 보완 수단인 양도제한조건부주식(Restricted Stock Unit, 이하 RSU)제도를 도입함으로써 시장중심적으로 이 문제를 풀어내는 선진 스타트업 벤처금융 방안을 제시하는 것이 목적이다. 이를 위해, 본 논문은 첫째, RSU의 개념에 대해 제한조건부주식(Restricted Stock, 이하 RS)와 비교논의를 통해 제시하며. RSU의 스톡옵션에 대한 보완적 특징 설명에서는 기존 스톡옵션제도와 RSU를 비교 설명하였다. 둘째, RSU의 단점과 한계점을 설명하고 그 한계점을 극복하며 국내 스타트업과 벤처기업들이 이를 효과적으로 도입 할 수 있는 방안을 제시하였다. 셋째, RSU의 도입 현황을 제시하며 향후 RSU 도입 위한 정책방안들을 제안하였다. 본 논문은 이를 통해 RSU가 기본 스톡옵션제도의 규제강화를 통한 시장 위축적인 해결보다는, 새로운 대안을 주식연계형 보상방안 대안을 제시함으로써 보다 시장친화적인 제도를 마련함으로써 국내 스타트업과 벤처기업의 인력수급 해소와 사업활성화에 큰 의미를 벤처생태계 스스로가 풀어내는데에 기여할 것으로 기대한다.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.44 no.11
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• pp.36-42
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• 2007

In this paper, we have studied temperature compensation architecture for a bust mode optical transmitter to convert the electric burst mode date signal to a optical one through the laser diode. In order to get stable high speed data transmission, we used digital sampling technique with a microprocessor for the temperature compensation of the laser diode, not the previous real time analog technique. Though the digital automatic power control circuit should be complemented the previous analog one with accuracy and effectiveness. So the digital technique will be more effective in further future in development for the over Gb/s transmitting speed.

• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.187-192
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• 2008

A saturation and deadzone compensator is designed for robot systems using fuzzy logic (FL) and neural network (NN). The classification property of FL system and the function approximation ability of the NN make them the natural candidate for the rejection of errors induced by the saturation and deadzone. The tuning algorithms are given for the fuzzy logic parameters and the NN weights, so that the saturation and deadzone compensation scheme becomes adaptive, guaranteeing small tracking errors and bounded parameter estimates. Formal nonlinear stability proofs are given to show that the tracking error is small. The NN saturation and FL deadzone compensator is simulated on a robot system to show its efficacy.