• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.261-264
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• 1988

In this paper, a transmission protocol including error recovery strategy on the data link layer for Ethernet using CSMA/CD media accessing method was proposed. So when considering the actual transmission error probability on the channel, it's performance was analyzed through a simulation. Performming the simmulation, the required parameters was taken as those given by Ethernet controller interface board.

• 대한전기학회논문지
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• 제43권6호
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• pp.1027-1035
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• 1994

This paper aims to make an artificial arm control strategy. For this, we propose a new feature extraction method and design artificial neural network for the functional classification of myoelectric signal(MES). We first transform the two channel myoelectric signals (MES) for biceps and triceps into frequency domain using fast Fourier transform (FFT). And features were obtained by comparing the magnitudes of ensemble spectrum data and used as inputs to the three-layer neural network for the learning. By changing the number of units in hidden layer of neural network we observed the improvement of classification performance. To observe the effeciency of the proposed scheme we performed experiments for classification of six arm functions to the three subjects. And we obtained on average 94[%] the ratio of classification.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2007년도 하계종합학술대회 논문집
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• pp.471-472
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• 2007

At this paper, we use non reversible hierarchical scheme and fixed channel assignment scheme at the hierarchical cellular system with macrocell and microcell for the call process strategy Using this strategy, we analyze the system performance in accordance with the various dwell time at each cell. In this simulation result, the more the dwell time is small at microcell, the more the blocking probability and the handover failure probability is low.

• Journal of Information Technology Applications and Management
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• 제13권2호
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• pp.55-65
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• 2006

Since the World-Wide Web (WWW) has become a major channel for information delivery, information overload also has become a serious problem to the Internet users. Therefore, effective information searching is critical to the success of Internet services. We present an integrated search engine for searching relevant web pages on the WWW in a certain Internet domain. It supports a local search on the web sites. The spider obtains all of the web pages from the web sites through web links. It operates autonomously without any human supervision. We developed state transition diagram to control navigation and analyze link structure of each web site. We have implemented an integrated local search engine and it shows that a higher satisfaction is obtained. From the user evaluation, we also find that higher precision is obtained.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2019년도 춘계학술발표대회
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• pp.82-85
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• 2019

An adaptive power control scheme is proposed for the cognitive relay networks with joint overlay and underlay spectrum sharing model. The transmit power of the secondary user is adjusted adaptively according to the spectrum sensing results and the interference channel condition. The outage probability of the secondary user is compared by Monte - Carlo simulations between the fixed power control scheme and pure overlay or underlay spectrum sharing schemes. The results show that, by employing the adaptive power control strategy, the interference probability of the secondary user to the primary user is decreased by 70 % ~ 80 % under the same outage probability. Also, the outage probability of the secondary user is reduced by 1 ~ 2 orders of magnitude under the same interference probability. Thus, the performance of the spectrum sharing is improved effectively.

• 산업융합연구
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• 제9권1호
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• pp.33-66
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• 2011

As an information-oriented society is arrived. an internet market has been developed steadily. This advance of internet market made the augmentation of purchasing clothes, and thus the fashion trade has tried to use effectively the internet marketing as a new channel of profit increasement. However, the fashion trade did not utilize efficiently an internet as a marketing mediation so far. This results from the want of coping with consumer behavior on the internet community. To answer the necessity of analysis of consumer behavior, this thesis inquires the difference of buying clothes on the internet shopping mall according to the lifestyle of consumer. Then this thesis provides the strategy of internet marketing fitted to each lifestyle for making a good profit. The inquiry was conducted to university located on Seoul, and the lifestyle of undergraduate was categorized to five groups, that is, trendy, information-inclined, economical purchase, brand-inclined, and spirit-pursuit types. This thesis analyzed the difference of consumer behavior of each type according to various factor, and presented a marketing strategy fitted to each type from these analysis results.

• 산업융합연구
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• 제3권1호
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• pp.55-77
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• 2005

Recently the environment which besieges distribution system is changing suddenly. With opening the distribution market together the advanced various nations new multinational discount stores are introduced and the competition from this market is growing in intensity. Like this change is raising the recognition of the enterprises against the strategy importance of the distribution channel. Consequently, from under competing which is deepened from the hazard where the discount point industry exists what, it will not be able to do the customer-oriented management which it sees. To lead a customer satisfaction finally and it is important to put out. As only low price standing sale it will not be able to create a competitive advantage and raising the quality also it is demanded with the diversification of product assortment together. It does a customer loyalty degree further firmly and compared to the long-range strategy is necessary.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.67-74
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• 2022

In this study, the core competencies of 7-Eleven, Japan's representative convenience store, were derived through a qualitative analysis method using VRIO (value, rarity, Imitability, and organization) framework, a management strategy model based on Resource-Based View (RBV). As a result of VRIO analysis, the value can be based on the scale that 7-Eleven ranks first in the Japanese convenience store industry in terms of the number of stores and market share that it has developed based on capital. The rarity is based on the fact that raw material procurement, the main activity of a company, is establishing the nation's largest distribution channel in the entire process, from producers to logisticians and franchisees. The difficulty for Imitability is based on a dominant strategy and has secured a competitive advantage by opening stores in a specific area, improving awareness, and raising barriers to entry. As the largest company in the convenience store industry, it is confirmed that 7-Eleven is the result of organizational power that has built stores not only in Korea but also in 16 countries around the world.

• 한국콘텐츠학회논문지
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• 제9권4호
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• pp.65-71
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• 2009

본 논문에서는 협력 통신 기법을 이용한 새로운 시공간 다이버시티 중계 시스템을 제안한다 하나의 협동 그룹에 1개 이상의 중계 단말을 추가하여 프레임 에러 여부 및 채널 상태 정보 등의 상태정보를 서로 공유한다. 채널 상태 정보가 좋은 단말만을 선택하여 다중안테나를 이용한 시공간 다이버시티 중계전송을 시작한다. 또한 제안하는 중계전송을 위해 협동그룹 내의 새로운 중계단말 간의 교신 프로토콜을 제안한다. 이 방식에 대해 수신신호 대 송신신호 비(Er/Es)를 측정하여 성능이 개선됨을 증명하였으며, 플랫페이딩(flat-fading) 채널에서의 시뮬레이션을 통해 기존의 협동다이버시티에 비해 혁신적으로 성능이 향상됨을 보인다.

• 보건교육건강증진학회지
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• 제17권1호
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• pp.171-184
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• 2000

In present paper, author proposed an effective health education strategy for local health department, which was revised from the PATCH of CDC. The author suggested that an health department should follow several steps to have an effective health promotion programs in their community. First step would be community mobilization that encourage key persons and major organizations and agencies to participate in the program. The second step is collecting demographic and vital statistics in the community or for a target audience as well as social, psychological and behavioral data. Based on the data analysis, the next step is to choose a target audience and health problem(s) for the target audience in question. The fourth step is the development of health education strategy for the target audience and the health problem. The fourth step also includes selecting a proper communication channel and educational materials as well as pre- and post-testing. The final step is implementing health education programs and evaluating the process, outcome and impact of the program. Korean Institute for Health and Social Affairs(KIHASA) has developed a model for health education programs used in local health department. KIHASA can provide technical assistance and health education materials to assist local health departments in Korea.