• Journal of the Institute of Electronics Engineers of Korea TC
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• v.46 no.12
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• pp.22-29
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• 2009

In this paper, we developed the 200-Watts SSPA(Solid State Power Amplifier) for the X-band pulse compression solid state radar. The developed X-band SSPA is consists of 3-stage CSA(Corporate Structured Amplifier) modules in pre-amplifier stage, driver-amplifier stage and main-power amplifier stage. The main-power amplifier stage of SSPA designed by balanced type using GaN HEMT with enough power and gain to generate power more than 200-Watts in X-band. The developed SSPA has performance with more than total gain 59dB and output power 200-Watts in condition of frequency range 9.2-9.6GHz, pulse period 1msec, pulse width 100usec and duty cycle 10%. The developed SSPA in this paper can apply to high quality solid state radar system with pulse compression technique.

• Journal of Arbitration Studies
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• v.28 no.3
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• pp.55-73
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• 2018

The purpose of this study is to investigate effects of arbitration in organizational performances by means of literature review. The contents of the study were theoretical studies on the role of intangible power in the organization. By mediating compliance and repulsion, it is intended to reduce conflicts and increase work commitment, which in turn will increase productivity and increase employee self-esteem, and help improve corporate image over the long term. Factors such as the contents of professional power, the content of referent power, the importance and contents of informational power as well as the importance of arbitration were studied. It is found that when arbitration is effective, it can increase work commitment and improve the productivity of the enterprise.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.570-571
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• 2021

The research on waste power batteries in China in the past ten years reveals that the power battery recycling industry is enormous but marred with several challenges. A study of China's current power battery closed-loop supply chain revealed some issues in the power battery recycling industry, such as imperfect supply chain, small recycling scale, asymmetric information, and imperfect profit distribution mechanism. This paper uses the theory of corporate social responsibility and consumer choice to propose a closed-loop network of power batteries based on block chain technology and analyzes the existing closed-loop supply chain of power batteries. Consequently, this study provides a new idea for developing the power battery closed-loop supply chain by proposing the closed-loop network of power batteries based on blockchain technology

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.121-122
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• 2007

Recently, there are two big paradigm shifts in the global electric power industry. First, the maintenance practice is gradually moved from time-based activities to reliability-centered activities. On the other hand, asset management is emerging as a new framework to maximize the efficiency of investments. The two paradigms are mutually exclusive in natural. Thus the power utilities usually chose the investment alternative on the basis of reliability in the past. But today's changed business environment - competition -requires the power utilities to compromise the trade-off of reliability effects and economics of investments. This paper shows what and how to interpret the reliability effects of distribution system investments into financial indicators beneficial for power utilities's managers to make decision on the perspective of corporate value.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.237-240
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• 2003

Gas turbines are extensively used in flight propulsion, electrical power generation, and other industrial applications. During its life span, a turbine blade is taken out periodically for repair and maintenance. This includes re-coating the blade surface and re-drilling the cooling holes/channels. A successful laser re-drilling requires the measurement of a hole within the accuracy of ${\pm}0.15mm$ in position and ${\pm}3^{\circ}$ in orientation. Detection of gas turbine blade/vane cooling hole position and orientation thus becomes a very important step for the vane/blade repair process. The industry is in urgent need of an automated system to fulfill the above task. This paper proposes approaches and algorithms to detect the cooling hole position and orientation by using a vision system mounted on a robot arm. The channel orientation is determined based on the alignment of the vision system with the channel axis. The opening position of the channel is the intersection between the channel axis and the surface around the channel opening. Experimental results have indicated that the concept of cooling hole identification is feasible. It has been shown that the reproducible detection of cooling channel position is with +/- 0.15mm accuracy and cooling channel orientation is with +/$-\;3^{\circ}$ with the current test conditions. Average processing time to search and identify channel position and orientation is less than 1 minute.

• The Journal of Information Systems
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• v.16 no.1
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• pp.91-109
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• 2007

This study investigates the extent to which the implementation of enterprise resource planning(ERP) systems enhance the corporate performance by examining financial variables of the implemented firms against those of the control fm. A total of 346 observations were obtained from 160 firms, 80 implemented firms and 80 control firms, for the period of 1998-2002. Results from the study partly support the assertion that ERP improves the full spectrum of business functions such as selling, marketing, purchasing, warehousing, accounting and human resources by tightly integrating enterprise-wise information databases. First the profitability of the implemented group was different from that of the control group. The indicator (dummy) variable was able to explain the differences in total cash flows between the implemented group fm and the control group firms. Second, ERP turned out In improve the efficiency in managing assets. The indicator variable has the power in explaining the differences in the amount of accounts receivables between the implemented group firms and the control group firms. Third, the product turnover ratio of the implemented group was different from that of the control group. Fourth, the average value added per employee and the net income per employee of the implemented group firms were greats- than those of the control group firms. Finally, the average magnitude of the administrative expenses of the implemented group firms was smaller than that of the control group firms.

• East Asian Journal of Business Economics (EAJBE)
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• v.3 no.1
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• pp.1-7
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• 2015

Ethics suggest that all persons are by nature moral, as it would not be possible for humans to exist collectively or even individually without an innate ethical sense. In order for the public sector to thrive in business, the board of directors needs to be guided by ethics and take into account the abiding interests of humanity and public good. It is argued in this paper that the abuse of power in the public sector has often been associated with unethical leadership and conducts which undermines the ubuntu notion. The irregularities which often arise in the awarding of tenders in the state-owned companies are some of the challenges that are prone to the public sector. In order to address these challenges and promote a flourishing democracy it is argued that ethical leadership as envisaged in the King III Report needs to be adhered to by the boards of directors. This paper concludes that the direction and control of ethics in any organisation is vital especially where the line between corporate governance and ethical leadership has become blurred.

• Journal of Global Scholars of Marketing Science
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• v.11
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• pp.79-101
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• 2003

This study is a cross cultural examination of interactivity, comparative advertising, and technology use in Korean and U.S. corporate websites. Utilizing cultural analysis criteria of high vs. low context, power distance and individualism-collectivism, we compared interactivity in U.S. and Korean websites. Our findings indicate that U.S. corporate websites tend to emphasize customer-message and customer-advertiser interactivity, while Korean websites highlight customer-customer interactivity. Findings on comparative advertising strategy indicate that cultural bias represented in U.S. individualism and Korean collectivism leads U.S. web advertisers to utilize direct and indirect comparative advertising more frequently than their Korean counterparts. The results of our technology analysis unexpectedly show that there is no significant difference between the two countries.

• East Asian Journal of Business Economics (EAJBE)
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• v.2 no.3
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• pp.18-22
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• 2014

Ethics suggest that all persons are by nature moral, as it would not be possible for humans to exist collectively or even individually without an innate ethical sense. In order for the public sector to thrive in business, the board of directors needs to be guided by ethics and take into account the abiding interests of humanity and public good. It is argued in this paper that the abuse of power in the public sector has often been associated with unethical leadership and conducts which undermines the ubuntu notion. The irregularities which often arise in the awarding of tenders in the state-owned companies are some of the challenges that are prone to the public sector. In order to address these challenges and promote a flourishing democracy it is argued that ethical leadership as envisaged in the King III Report needs to be adhered to by the boards of directors. This paper concludes that the direction and control of ethics in any organisation is vital especially where the line between corporate governance and ethical leadership has become blurred.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.3
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• pp.1249-1256
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• 2021

This study investigates the company value determinant by observing the effect of financial performance and Corporate Social Responsibility (CSR) and its role in moderating performance achievement. The macro-economy variables such as inflation and interest rate are also used as the controlling variable. This research employs the sample of manufacturing companies of the food and beverage sub-sector listed on the Indonesia Stock Exchange. This study used panel data from 2013 to 2017, with the moderating regression analysis. The result shows that the profitability of the current or previous period affects the company's value. CSR and company size affect the company value at the next period shows that stock price, which reflects the investor's perception today, will be affected by the CSR, Size, and Return On Asset of the previous year. CSR also shows that it can be the substitute for profitability since a company that performs CSR is the one that has a good performance. The regression moderating model and the profitability of the previous period have a higher explanatory power than the higher R square value in explaining company value.