• Journal of Information Technology Applications and Management
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• 제15권3호
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• pp.209-225
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• 2008

The purpose of this study is to examine the relationship between IT human capability and knowledge transfer and the role of absorptive capacity between them. From the test of both measurement and structural model using Partial Least Squares (PLS), IT human capability is found to be significant to absorptive capacity and knowledge transfer. Absorptive capacity is also significantly related to knowledge transfer. The interesting result found in this study is that the path of absorptive capacity drawn from IT human capability to knowledge transfer is stronger than the direct relationship between IT human capability and knowledge transfer, indicating that absorptive capacity plays an important role in knowledge transfer. This result indicates that IT personnel with stronger technical skill, interpersonal skill and management capability are more likely to acquire and learn knowledge effectively from outside expertise. Moreover, this study shows that absorptive capacity, the individual’s ability to utilize external knowledge is derived from IT human capability and strongly effects on transferring knowledge from outsourcing vendors. This study suggests IT related managers that the development of IT human capability and absorptive capacity should be recognized for a successful exploitation of outside knowledge within a firm. It is also a necessary condition for a successful IT implementation and maintenance independently and economically from outside vendors.

• Journal of Information Technology Applications and Management
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• 제23권3호
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• pp.13-23
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• 2016

In recent years, big data has usefully been deployed by organizations with the aim of getting a better prediction for the future. Moreover, knowledge management systems are being used by organizations to identify and create knowledge. Here, the output from analysis of big data and a knowledge management system are used to develop a new model with the goal of minimizing the cost of implementing new recognized processes including staff training, transferring and employment costs. Strategies are proposed from big data analysis and new processes are defined accordingly. The company requires various skills to execute the proposed processes. Organization's current experts and their skills are known through a pre-established knowledge management system. After a gap analysis, managers can make decisions about the expert arrangement, training programs and employment to bridge the gap and accomplish their goals. Finally, deduction graph is used to analyze the model.

• 한국인터넷방송통신학회논문지
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• 제10권4호
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• pp.1-5
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• 2010

오늘날 유비쿼터스 환경에서 전력망이나 이와 유사한 시스템의 실시간 원격 제어 및 모니터링 기술은 다양한 센서나 카메라를 통하여 획득한 정보를 시간과 지역에 구애됨이 없이 인터넷이나 이와 유사한 시스템을 통하여 공유할 수 있는 서비스를 제공한다. 본 논문에서는 인터넷 관리 시스템인 IMS(Internet Management System)을 이용한 시스템 성능평가 및 유지보수를 위한 태양광 발전시스템의 원격 실시간 감시 제어 방법을 소개하고, IMS를 물관리 시스템에 적용하여 실용적 가치를 검증하였다. 또한 실시간 데이터 전송 방식으로 위치에 상관없이 웹 브라우저를 통한 원격 제어가 가능하도록 설계하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.1296-1299
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• 2002

We implemented a CD signal processor operated on a CAV 48-speed CD-ROM drive into a VLSI. The CD signal processor is a mixed mode monolithic IC including servo-processor, data recovery, data-processor, and I-bit DAC. For servo signal processing, we included a DSP core, while, for CAV mode playback, we adopted a PLL with a wide recovery range. Data processor (DP) was designed to meet the yellow book specification.［2］So, the DP block consists of EFM demodulator, C1/C2 ECC block, audio processor and a block transferring data to an ATAPI chip. A modified Euclid's algorithm was used as a key equation solver for the ECC block To achieve the high-speed decoding, the RS decoder is operated by a pipelined method. Audio playability is increased by playing a CD-DA disc at the speed of 12X or 16X. For this, subcode sync and data are processed in the same way as main data processing. The overall performance of IC is verified by measuring a transfer rate from the innermost area of disc to the outermost area. At 48-speed, the operating frequency is 210 ㎒, and this chip is fabricated by 0.35 um STD90 cell library of Samsung Electronics.

• 한국기계가공학회지
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• 제7권2호
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• pp.60-65
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• 2008

The high-technology industries including a semi-conductor and an information communication need an ultra-precision technology from the technological points of view. Nano technology based on an ultra-precision technology is being studied to overcome the delicate technology that may occur in the semi-conductor fields. Then, the transferring equipment with high resolution and long displacement becomes an important technology. The goal of this study is to analyze the displacement magnification mechanism driven by piezoelectric actuator which has high resolution and fast response characteristics using flexure hinge with the merits of soft displacement, negligible back-lash and stick-slip, and no-lubrication. The analyses to reduce the magnification losses occurred during the magnification process are performed using ANSYS software based on FEM. The five design variables such as arm thickness, thickness of hinge, radius of hinge, length of input side at the 1st lever and magnification ratio of 1st lever are optimized to induce the maximum magnification ratio using Taguchi method.

• 농촌지도와개발
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• 제7권1호
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• pp.13-29
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• 2000

During the last 10 year period, OECD member countries were in a trend of 'less government' from 'more government', thus resulted in restructuring and reducing staffs in government agricultural institutions including the Agricultural Knowledge System. In recognizing the crisis of 'less government', member countries were in a trend of paradigm shift to the 'better government;. In producing and transferring agricultural information, member countries are more concerned about consumers as well as producers as the target of good quality services of the 'better government'. The general consensus of member countries identified the importance of food safety and environmental protection as new agendas for the 21st century. Agricultural Knowledge Systems (AKS) in OECD member countries were in a trend of reorganization in addressing food safety, and agriculture / environmental issues. The approaches, functions and responsibilities were diversified to multi-governmental institutions from the ministry of agriculture. Thus the importance of institutional cooperation and coordination were emphasized more in the newly changed AKS paradigms. The objectives, functions and approaches of AKS in OECD member countries as well as in Korea will be directed to emphasize the importance of environment, sustainable agriculture, food safety, and rural development. They will also focus on establishing mutual cooperative systems among policy makers, consumes, non-governmental organizations, and agri-related organizations as necessary for sustainable development in the future.

• 한국의류학회지
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• 제29권9_10호
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• pp.1230-1240
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• 2005

The purpose of this study was to apply a scientific and systematic method for assessing fashion goods' TV ads effects by EEG and questionnaires as determined by the type of ads appeal. Ads stimulants used in the survey were limited to underwear and sportswear that were advertised during $2000{\sim}2002$ on TV: 4 information-transferring and 4 emotion-evoking ads were used. Subjects were thirty healthy male and female college students. EEG was extracted from six lobes and the recorded EEG was analyzed by the range of frequency of ${\theta},\;{\alpha}\;and\;{\beta}$ waves. Data were analyzed by SPSS 11.0 with reliability test, $x^2$-analysis, t-test and frequency analysis. The emotion-evoking ads showed higher scores in memory, recall and attitude towards the ads. The responses of ${\theta}\;and\;{\alpha}$ wave were active throughout the ads but the response of ${\beta}$ wave was not. The results by the survey and the EEG test showed high similarities, indicating the EEG tests could be used as the supplementary tool for measuring ads effects.

• 한국인터넷방송통신학회논문지
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• 제16권1호
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• pp.1-5
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• 2016

최근 신용 카드, 멤버쉽 카드, 쿠폰 등을 모아서 관리할 수 있는 올인원 서비스가 활성화되고 있다. 특히 오프라인 결제와 연계하여 O2O(Online to Offline)의 핵심 서비스로 등장하고 있다. 이러한 기업과의 모바일 상거래를 위해서는 고객의 인증 작업을 거쳐야 하는데, 고객이 기업별로 아이디/패스워드를 저장하거나 입력하는 작업은 매우 번거롭다. 따라서 본 논문에서는 올인원 서비스에서 자동적으로 고객을 인증하는 기법을 제안한다. 회원 등록시 고객은 기업으로부터 인증 티켓을 수신한 후, 단말기에 저장한다. 인증 티켓에는 고객의 아이디와 패스워드가 기업용 대칭 키로 암호화되어 있으며 서비스 요청시 인증 티켓을 전달함으로써 자동적으로 인증 절차가 이루어진다.

• Journal of Computing Science and Engineering
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• 제4권3호
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• pp.225-239
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• 2010

This paper introduces a new approach to modeling relative distance among nodes under a variety of communication rates, due to node's mobility in Mobile Ad-hoc Networks (MANETs). When mobile nodes move to another location, the relative distance of communicating nodes will directly affect the data rate of transmission. The larger the distance between two communicating nodes is, the lower the rate that they can use for transferring data will be. The connection certainty of a link also changes because a node may move closer to or farther away out of the communication range of other nodes. Therefore, the stability of a route is related to connection entropy. Taking into account these issues, this paper proposes a new routing metric for MANETs. The new metric considers both link weight and route stability based on connection entropy. The problem of determining the best route is subsequently formulated as the minimization of an object function formed as a linear combination of the link weight and the connection uncertainty of that link. The simulation results show that the proposed routing metric improves end-to-end throughput and reduces the percentage of link breakages and route reparations.

• Fisheries and Aquatic Sciences
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• 제13권4호
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• pp.343-349
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• 2010

The effects of osmotic stress on the non-specific immune response of Nile tilapia, Oreochromis niloticus, were investigated. Osmoregulatory mechanism of tilapia has been studied, but less information is available about innate immune response of O. niloticus faced with hyperosmolality. Acute osmotic stress was elicited by transferring tilapia from freshwater (FW) to 24 psu seawater (SW). Non-specific immune parameters including lysozyme activities of plasma and head kidney (HK), alternative complement pathway (ACP) activity in plasma, phagocytic capacities of spleen and HK immune cells, and respiratory burst activity of immune cells in both HK and spleen were analyzed. Lysozyme activities were increased at 1 h and 30 h after transfer to SW, but decreased at 10 h after SW transfer. Conversely, ACP activity increased 10 h after SW transfer. Phagocytic capacity increased slightly at 1 h and 5 h after SW transfer, and respiratory burst activity showed an increase in superoxide release at 10 h after SW transfer. Taken together, these results indicate that the exposure of tilapia to hyperosmotic conditions has immunostimulatory effects on cellular and humoral immune reactions.