• Journal of Industrial Convergence
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• v.4 no.2
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• pp.57-73
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• 2006

The purpose of this study is to analyze the recent consumption patterns and consumer's perception changes in the Korean beef market and thus to analyze whether there was any structural changes in beef consumption patterns in Korea. This current survey was conducted to examine consumer attitudes toward factors determining beef purchasing and improving distribution system. First, it is vital to cut beef production costs and expand high-quality beef in order to compete with imported beef. Second, it is also important to endeavor to enhance th safety of beef. Also consumers demand more information on the quality of beef. Third, promotion activities are very important to maintain Hanwoo beef market power. Forth, it is important to prevent imported beef from being sold as Hanwoo beef at retailers. Finally, we should pay more attention to maintain beef consumption data.

• Journal of Communications and Networks
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• v.15 no.3
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• pp.292-300
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• 2013

Nowadays, energy saving has become a hot topic and information and communication technology has become a major power consumer. In long term evolution advanced (LTE-A) networks, heterogeneous deployments of low-power nodes and conventional macrocells provide some new features, such as coverage extension, throughput enhancement, and load balancing. However, a large-scale deployment of low-power nodes brings substantial energy consumption and interference problems. In this paper, we propose a novel switching strategy (NS), which adaptively switches on or off some low-power nodes based on the instantaneous load of the system. It is compatible with the microcells' load balancing feature and can be easily implemented on the basis of existing LTE-A specifications. Moreover, we develop an analytical model for analyzing the performance of system energy consumption, block rate, throughput, and energy efficiency. The performance of NS is evaluated by comparison with existing strategies. Theoretical analysis and simulation results show that NS not only has a low block rate, but also achieves a high energy efficiency.

• The KIPS Transactions:PartD
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• v.18D no.3
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• pp.197-204
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• 2011

Set-top Box which receives broadcasting signal and delivers it to display device such as TV usually doesn't have low-power mode, standby power mode. On the other side, most consumer electronics support standby power mode. The main reasons come from technical barriers and operational stability. Set-top box normally consumes 80~90% power of active mode even though turning off. This is much higher compared to other consumer electronics which consume less than 1W in standby power mode. However, most developed countries including Korea are enforcing the regulations which enhance energy efficiency of set-top box. This paper describes design and development of low-power set-top box. Key technologies are SoC supporting low-power mode, system hardware and software operating in separated power mode, and middleware managing the power with broadcasting system. Finally, we show energy saving expectation through development and proliferation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2008.06a
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• pp.279-284
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• 2008

부가서비스는 공급자가 소비자에게 제공하는 본질적인 재화 또는 서비스에 추가하여 부수적으로 제공되는 서비스라는 사전적 의미를 갖고 있다. 최근에는 IT 기술이 발전함에 따라, 웹을 기반으로 한 다양한 부가서비스가 각 산업에서 등장하였으며, 때로는 기본적인 서비스처럼 여겨지기도 할 만큼 성장하고 있다. 전력산업에서도 이러한 시대적 요구와 경쟁력 강화를 위한 수단으로 부가서비스가 도입되고 있다. 초기에는 주로 이메일 청구서 형태의 단순한 서비스였으나, 현재는 다양한 전력 인프라와 데이터를 이용한 전력부가서비스가 시도되고 있다. 국내에도 전력부가서비스 개념이 도입되어, 초기에는 전력부가서비스의 필요성과 이에 대한 인식이 부족하여 제한적인 분야에서만 개발되어왔다. 그러나 최근들어 공급자는 고객을 위한 부가서비스의 중요성을 인식하게 되고, 수용가 또한 이에 대한 높은 관심을 보임에 따라, 점차 다양한 분야로 확대되는 경향을 보이고 있다. 본 논문에서는 이와 같은 시장의 변화를 고려하여, 국내의 전력산업 환경에 적합한 부가서비스 BM을 개발하되, 성공적인 전력부가서비스로 구축하기 위해 수용가의 선호도와 요구사항을 조사하고 이를 충분히 반영한 전력부가서비스 BM(Business Model) 개발 및 시스템 구축방안에 대하여 소개하고자 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.19-22
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• 2022

In this work, we studied consumers' attractiveness/usefulness perceptions (CAUP) of online commerce product photos when exposed to alternative dark/light user interface (UI) modes. We analyzed time-series EEG data from 31 individuals and performed neuroscience mining (NSM) to ascertain (a) how the CAUP of products differs among UI modes; and (b) which deep learning model provides the most accurate assessment of such neuroscience mining (NSM) business difficulties. The dark UI style increased the CAUP of the products displayed and was predicted with the greatest accuracy using a unique EEG power spectra separated wave brainwave 2D-ConvLSTM model. Then, using relative importance analysis, we used this model to determine the most relevant power spectra. Our findings are considered to contribute to the discovery of objective truths about online customers' reactions to various user interface modes used by various online marketplaces that cannot be uncovered through more traditional research approaches like as surveys.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.992-995
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• 2010

We propose an Power line communication, also known as Power line Digital Subscriber Line (PDSL), mains communication, power line telecom (PLT), or power line networking (PLN), or Broadband over Power Lines (BPL) are systems for carrying data on a conductor also used for electric power transmission. Power line communications can also be used to interconnect home computers, peripherals or other networked consumer peripherals. Specifications for power line home networking have been developed by a number of different companies within the framework of the HomePlug Powerline Alliance, the Universal Powerline Association and the HD-PLC Alliance.

• The Journal of Information Technology
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• v.8 no.1
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• pp.11-25
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• 2005

The purposes of this study were to explain consumer attitude, expenses and satisfaction of mobile-phone Users. The data of this study used from Pollever.com. This study was satisfaction of mobile-phone users in Korea. The users were consumers of Samsung, LG, SK-Telecom and Pantack. The critical success factor was on the subside for mobile-phone in the growth of mobile service, which we can analyze in its positive effects. Fifty percent of consumers were unsatisfaction with local companies without Samsung. Now most of local mobile-companies will developed music-phone, high-tec camera-phone, hi-slim phone, and health-phone. But, the results of this study are as fallow: Most of consumer' main issues were design, weight, and brand power. It was in that it played the driving force to upgrade the local mobile-phone services into international level with the explosive growth in business by providing cheap phones.

• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.6
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• pp.884-894
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• 2000

This study was intended to examine the effect of consumer materialism, price and point-of-purchase advertisements on consumer preference and purchasing intention with respect to discount jeans. Information for the study was obtained through the use of an experimental design which was 2$\times$[2$\times$3] mixed factorial design. The subjects were two hundred and seventy college male and female students. The data were analysed with factor analysis, ANOVA by using the SAS program. The main results were as follows: First, the results indicated that the 3-way interaction effects among materialism, price and point-of-purchase advertisements on consumer preference. Second, the results showed the 2-way interaction effects between materialism and price between materialism and price on consumers’purchasing behavior. These results indicated that materialism have not direct effect on consumers’purchasing behavior but significant influence under those condition in which price effect occurs. And different from other point-of-purchase advertisements, power words’advertisements show negative effects on consumer preference in case of low price jeans, having no connection with materialism level.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.9
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• pp.52-59
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• 2014

The aims of this paper are to characterize the transient overvoltages(TOVs) and to evaluate the risk occurring at 22.9kV consumer's substation. The measurements of lightning- and switching-caused TOVs were made during Mar. 2013 and Feb. 2014. As a consequence, 47 events of TOVs were recorded and 4 of them were higher than the input voltage envelope(IVE) of the information technology industry council(ITI) curve. The measured TOVs are characterized by longer front times and longer durations compared to the $1.2/50{\mu}s$ standard impulse voltage waveform, and some of them represent bipolar waves with lower oscillation frequencies. It suggests that the test of non-standard impulse voltage waveforms is needed for effective risk assessments of power apparatus. Lightning- and switching-caused TOVs exceeding IVE of ITI curve are induced at the secondary of 22.9kV potential transformer(PT). We may, therefore, conclude that the surge protection devices should be applied at the secondary of PT and the surge absorbers should be installed at the primary of VCB or PT. The results presented in this paper could be useful to design the reasonable insulation coordination for 22.9kV consumer's substation.

• Journal of Institute of Control, Robotics and Systems
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• v.21 no.5
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• pp.442-446
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• 2015

As electricity consumption is increasing rapidly these days, an urgent. need exists to minimize consumption through smart and intelligent ways in order to prevent a future energy crisis. For this purpose, development of an intelligent peak power management system should be required. As the number of appliances and consumer electrical devices increase, power consumption in unit business tends to grow. Generally, electricity consumption can be minimized using a peak power management system capable of. effectively controlling the load power by continuously monitoring the power. In this work, a peak power management system which consists of arduino microprocessor equipped with ethernet and Zigbee shield is presented. To verify the feasibility of the proposed scheme, laboratory-scale experiments are carried out.