• Journal of Communication Design
• /
• v.68
• /
• pp.278-288
• /
• 2019

The purpose of this study is to analyze the effects of risk and convenience on purchase intention in the IOT market, and I want to analyze the moderating effect of emotional consumption value. In this study, two products were selected from three product groups. There are three major methods of research. First, theoretical considerations. Second, survey analysis. Reliability analysis and factor analysis were performed using descriptive statistics using SPSS. Third, we measured changes of EEG according to in - depth interview and indirect experience. As a result of the hypothesis of this study, it was confirmed that convenience of use of IoT product influences purchase intention. Risk was predicted to have a negative effect on purchase intentions, but not significant in this study. This implies that IoT products tend to be neglected in terms of monetary loss such as cost of purchase, cost of use, and disposal cost when purchasing. In-depth interviews and EEG analysis revealed that there is a desire to purchase and try out the IoT product due to the nature of the product, the novelty of new technology, and the vague idea that it will benefit my life. The aesthetic, symbolic, and pleasure factors, which are sub - elements of emotional consumption value, were found to have a great influence. This is consistent with previous research showing that emotional consumption value has a positive effect on purchase intention. In-depth interviews and EEG analyzes also yielded the same results. This study has revealed that emotional consumption value affects the intention to purchase IoT products. It seems that companies producing IoT products need to concentrate on marketing with more emotional consumption value.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.10a
• /
• pp.810-813
• /
• 2016

기존 IoT 스마트 가로등은 모션 감지 센서를 이용하여 보행자를 감지하고, 가로등의 밝기를 조정하는 형태로 구성된다. 하지만 이러한 방법은 보행자가 나아갈 길을 미리 예측하여 밝혀주지 않는다. 특히 기존 방법은 보행자 현재 위치만 밝힐 뿐, 나아갈 길은 어두운 상태이기 때문에 통행에 불편함을 겪고 있다. 본 논문에서는 보행자 경로를 미리 파악하여 가로등 밝기를 조절하는 방식을 소개한다. 보행자의 현재 위치를 파악하기 위해 모션 감지 센서를 이용하며, 보행자 경로 예측은 모션 벡터를 사용하여 가로등 밝기를 조절한다. 이러한 개선을 통하여 보행자의 편의 증대와 범죄 예방 등 긍정적인 효과를 기대 할 수 있다.

• Proceedings of the Korea Contents Association Conference
• /
• 2016.05a
• /
• pp.71-72
• /
• 2016

본 논문은 건식 내부 굴착 매립 간척공법(Dry Internal Project Land Digging Reclamation Method, DIPLDRM)[3] 호소의 대기 환경 개선을 위한 미세먼지 조절 IOT 모듈을 개발하는데 목적으로 하고 있다. 이를 위해 공기오염 중 인체에 가장 영향을 많이 미치는 미세먼지를 측정할 수 있는 공기오염 측정 시스템을 위한 공기 상태 변화를 Web 브라우저를 제안한다. 또한 본 연구는 외부 대기 상태와 디바이스로부터 측정된 내부 대기상태를 비교할 수 있도록 시각화함으로써 사용자의 편의성을 증대시킬 수 있을 것으로 판단된다.

• Applied Biological Chemistry
• /
• v.42 no.3
• /
• pp.218-222
• /
• 1999

The effects of storage temperature, moisture content and the concentration of additives, such as sucrose fatty acid ester(SE), isomaltooligosaccharide(IO) and glycerin(GL), on texture properties, hardness(HA), cohesiveness(CO) and chewiness(CH) of Baikseolgi after 7 days storage were analyzed by response surface methodology(RSM). The contour values of HA of SE added Baikseolgi at 20, 50 and $80^{\circ}C$ of storage temperate were $1500{\sim}3200,\;500{\sim}1300$ and $100{\sim}400\;g_f$, respectively. The HA of IO or GL added Baikseolgi decreased with increased storage temperature, moisture content and additive concentration. The storage temperature was the most significant factor affecting the HA of Baikseolgi. However, the second and third significant factors were moisture content and additive concentration, respectively. These results imply that the control of storage temperature is the most effective method to increase the storage stability of Baikseolgi. The CO of IO or GL added Baikseolgi was increased by the change of strage temperature from $20{\circ}\;to\;50{\circ}$. While, there was no significant difference between $50{\circ}\;and\;80{\circ}$ of storage temperature. The CO of IO or GL added Baikseolgi was maximized around 40% of moisture content and that of GL added Baikseolgi was minimized around 0.5% of GL concentration. The storage temperature, additive concentration and moisture content were the first, second and third affacing factors on the CO of Baikseolgi, respectively. The CH of Baikeolgi was decreased by increasing storage temperature, moisture content and additive concentration. The storage temperature, moisture content and additive concentration were the first, second and third affacting factors on the CH of Baikseolgi, respectively.

• Journal of Appropriate Technology
• /
• v.7 no.1
• /
• pp.26-32
• /
• 2021

In the process of vaccine delivery and vaccination, temperature is mostly controlled by an insulated containers containing ice. Moreover, amount of wasted vaccine is significant because the temperature of the vaccine is not properly controlled. A core challenge of vaccination is temperature data monitoring, since it is critical for managing and operating strategical vaccination by health organizations. In this research, a real-time monitoring vaccine carrier system was developed. Temperature, location, and power consumption data of the vaccine carrier were monitored and working performances of the vaccine carrier were tested in both Korea and Tanzania (Arusha and Kilimanjaro regions). For both places, Short Message Service (SMS) communication method was used to send information of the carrier's status. As a result, the monitoring system was able to transmit and receive real-time data of the vaccine carrier status while the vaccine carrier was tested. The vaccine status data can be accessed from any location through the cloud server and web-based user interface.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.10a
• /
• pp.208-210
• /
• 2021

As the number of objects connected to the Internet increases rapidly, intelligent device development projects are gradually expanding that provide direct value to humans, away from simple monitoring functions, including sensors and communication functions, or delivery to servers.It is expected that the device will develop a technology that analyzes surrounding sensing information and changes the surrounding environment in consideration of users' preferences or safety. By establishing a biosignal measurement system in a developed product that can bring various effects using air, it will be possible to grasp the user's condition through a pattern of change in pressure distribution when seated. This paper proposes a construction system that enhances the comfort of using an air car seat through contact between a temperature measurement sensor and a user, and enables effective management of measured biosignals by linking them with an air pump control system.

• KIISE Transactions on Computing Practices
• /
• v.22 no.10
• /
• pp.513-520
• /
• 2016

As IoT devices become more common in the public sphere, the energy efficiency of embedded systems becomes a problem of major interest in addition to the system performance. Energy efficiency is important for portable embedded systems because they obtain power from their battery, and a low energy efficiency will result in a low usage time while a high energy efficiency will allow for longer usage time. In this paper, we propose a memory usage based frequency selection method to improve the energy efficiency of embedded Linux systems by using devfreq to select the device's system frequency. In our experiments, we found that the proposed method reduces energy consumption in an embedded device by up to 18%.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2018.07a
• /
• pp.45-46
• /
• 2018

본 논문에서는 시간에 엄격한(Time critical) 산업용 IoT(Industrial IoT) 환경의 무선 센서 네트워크 시스템 상의 효율적인 패킷 전달과 정확도(Accuracy) 향상을 위해 강화학습과 EDF 알고리즘을 혼합한 스케쥴링 기법을 제안한다. 이 방식은 다중 대기열(Multiple queue) 환경에서 각 대기열의 요구 정확도(Accuracy Requirement)를 기준으로 최대한 패킷 처리를 미룸으로써 효율적인 CPU자원 분배와 패킷 손실율(Packet Loss)을 조절한다. 제안하는 기법은 무선 센서 네트워크 상의 가변적이고 예측 불가능한 환경에 대한 사전지식이 없이도 요구하는 서비스의 질(Quality of service)를 만족할 수 있도록 한다. 또한 정확도를 요구조건으로 제시하여 마감시간이 중요시되는 작업에서도 효율을 최대화한다.

• Proceedings of the Korea Technology Innovation Society Conference
• /
• 2017.11a
• /
• pp.1297-1297
• /
• 2017

본 연구는 대화형 인공지능 스피커의 수요 증진을 위한 새로운 비즈니스 전략 제시를 위해 수행되었다. 이를 위해 해당 IoT기기 소비자의 사용의도에 영향을 미치는 요인들을 선정하여 집중적으로 고찰하고 각 요인 사이에 어떤 상관관계가 존재하는지 실증적으로 분석하고자 하였다. 사용 의도에 영향을 미치는 요인으로는 기기 사용에 대한 안전성이 확보 되었음을 의미하는 안전에 대한 신뢰도와 기술적 흐름에 따른 시대적 압박, 기기 사용으로부터 발생하는 쾌락적 동기와 실용적 동기, 기기의 혁신성으로부터 오는 차별적 동기를 고려하였다. 본 연구의 수행을 통해 모든 요인은 각각 소비자의 사용 의도에 긍정적인 영향을 미치며 특히 차별화 욕구와 쾌락적 동기, 실용적 동기 간에는 유의한 양의 상관관계가 있을 것으로 나타낼 것으로 기대된다. 더불어, 본 연구의 핵심 연구 요인인 시대적 압박 요인의 경우 안전에 대한 신뢰도와 사용 의도에 있어 정의 영향을 주지만 차별화 욕구와 실용적 동기와는 음의 상관관계를 보일 것으로 예상된다. 본 연구는 일반적인 연구 모델에서 취급되는 주요 요인들과 더불어 시대적 압박이라는 새로운 요인을 제시하고 그 영향력을 논증하여 융합형 기술에 기반한 새로운 비즈니스 전략을 제시할 수 있다는 점에서 가치를 갖는다

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.05a
• /
• pp.423-424
• /
• 2021

In this paper, we propose a system that collects data from sensors that detect the sleeping environment and adjusts the sleeping environment optimally based on the environment to help you get a good night's sleep. The sleep environment analysis is based on the determination of the sleep stage by detection of twisting through the load cell. In addition, based on data such as temperature, humidity, and illuminance, heat devices, humidifiers, blinds, etc. are controlled to create an environment in which to have a good sleep. The sleep environment control according to the sleep state can reduce fatigue when waking up by inducing a sleep state that is easy to wake up.