• Journal of Digital Convergence
• /
• v.10 no.8
• /
• pp.225-231
• /
• 2012

In this paper, we implement a wireless home monitoring system using physical computing platform with the open source type for house environment management. Sensors for temperature, optics and ultrasonic waves are used for home environment elements detection and control for the home safety. To obtain information related with home and transmit it to RIA Windows server system, XBee wireless communication system is used and the transmitted information is saved in mySQL database for history management. The possibility of prevention against fire disaster of a house situated in a dense buildings area and highly populated environments is suggested by adopting the proposed system.

• Journal of muscle and joint health
• /
• v.25 no.1
• /
• pp.39-49
• /
• 2018

Purpose: The purpose of this study was to investigate the effect of technostress on intent-to-persist focusing on the stress coping in nursing college students. Methods: A cross-sectional descriptive design was conducted with a survey of 153 nursing college students attending a university. Data were collected using self-administered questionnaires. For data analysis, descriptive statistics, t-test, one-way ANOVA, Pearson's correlation coefficients, and multiple regression, hierarchical analysis, and sobel test were performed using SPSS/WIN 23.0 for Windows. Results: The factor mediating technostress and intent-to-persist in nursing college student was emotion-focused coping behavior. Moreover, this mediating factor had a complete mediating effect between technostress and intent-to-persist in nursing college students. Conclusion: Based on this result, it will be necessary to develop educational strategies about smart device use and environmental supports that help them communicate about problems.

• Proceedings of the Korean Information Science Society Conference
• /
• 2011.06b
• /
• pp.120-123
• /
• 2011

스마트 디바이스(스마트폰, 태블릿PC 등)가 모바일 시장에 핵심으로 떠오르면서 새로운 스마트폰 플랫폼들이 등장하고 있다. 마이크로소프트에서도 스마트폰 경쟁에 뛰어들기위해 스마트폰의 요소를 강화한 윈도우폰 7을 발표하였다. 윈도우폰7 플랫폼이 현재는 스마트폰만 지원하지만 향후에 iOS나 안드로이드와의 경쟁을 위해 다양한 스마트 디바이스를 지원할 수 있을 것으로 예상된다. 그러나 다양한 스마트 디바이스들은 플랫폼은 같으나 디바이스의 용도에 따라 서로 다른 하드웨어 장치와 사용자 인터페이스를 가지고 있기 때문에 애플리케이션 개발에 많은 어려움이 존재한다. 이를 해결하기 위해서는 설계시점에서 다양한 장치들을 반영할 수 있게 모델링이 되어야한다. 이에 본 논문에서는 UML의 확장 메커니즘을 이용하여 윈도우폰7 애플리케이션의 모델링을 위한 확장 프로파일을 정의한다. 이를 위해 윈도우폰7이 가지는 특성을 분석하여 소프트웨어 구성요소와 하드웨어 리소스들을 분류하여 정의하였다. 이에 소프트웨어와 하드웨어 부분을 독립적으로 구현할 수 있으며, 윈도우폰7 플랫폼 기반의 새로운 스마트 디바이스가 출시되더라도 쉽게 확장이 가능하다.

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2003.11a
• /
• pp.128-128
• /
• 2003

Electrochromism (EC) is defined as a phenomenon in which a change in color takes place in the presence of an applied voltage. Because of their low power consumption, high coloration efficiency, EC devices have a variety of potential applications in smart windows, mirror, and optical switching devices. An EC devices generally consist of a transparent conducting layer, electrochromic cathodic and anodic coloring materials and an ion conducting electrolyte. EC has been widely studied in transition metal oxides(e.g., WO$_3$, NiO, V$_2$O$\sub$5/) Among these materials, WO$_3$ is a most interesting material for cathodic coloration materials due to its lush coloration efficiency (CE), large dynamic range, cyclic reversibility, and low cost material. WO$_3$ films have been prepared by a variety of methods including vacuum evaporation, chemical vapor deposition, electrodeposition process, sol-gel synthesis, sputtering, and laser ablation. Sol-gel process is widely used for oxide film at low temperature in atmosphere and requires lower capital investment to deposit large area coating compared to vacuum deposition process.

• Journal of Powder Materials
• /
• v.27 no.1
• /
• pp.58-62
• /
• 2020

Recently, electrochromic devices (ECDs) have gathered increasing attention owing to their high color contrast and memory effect, which make them highly applicable to smart windows, auto-dimming mirrors, sensors, etc. Traditional ECDs have a sandwich structure that contains an electrochromic layer between two ITO substrates. These sandwich-type devices are usually fabricated through the lamination of two electrodes and followed by the injection of a liquid electrolyte in the inner space. However, this process is sometimes complex and time consuming. In this study, we fabricated ECDs with a lateral electrode structure that uses only an ITO substrate and an all-in-one electrochromic gel, which is a mixture of electrolyte and electrochromic material. Furthermore, we investigated the EC properties of the lateral-type device by comparing it with a sandwich-type device. The lateral-type ECD shows strong blue absorption as the applied voltage increases and has a competitive coloration efficiency compared to the sandwich-type device.

• The Journal of Sustainable Design and Educational Environment Research
• /
• v.12 no.2
• /
• pp.43-52
• /
• 2013

This study aims to theoretically examine the educational and living elements that are needed for social education in the school system and suggest an approach to apply this result to the environmental aspects of the space in schools. To do this, characteristics of space in exemplary middle school oversee were analyzed. Also, the characteristics and status of the school space environment that foster socialization were examined. In order to increase students' social skills, the following community space should be considered. 1) teaching and learning spaces facilitating a variety of teaching methods, such as lecture, discussion, seminar classes, 2) open-spaces for communication among students, such as home base, hall, library, museum, and restaurant, 3) open-spaces for STEM education, 4) transparent windows located in the boundary wall between classrooms and hallways, 5) a large performance stage for presentation of student activities and experiences, 6) smart-learning spaces for fluent ICT system in classes and in public spaces, 7) restaurants and libraries located in the middle space of the school, and 8) ecological environments for student learning.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2019.01a
• /
• pp.235-236
• /
• 2019

IOT 산업이 발전하면서, 인간 생활의 3대 요소 중 주거환경 개선을 위한 많은 종류의 스마트 가전제품이 출시되었지만, 기상현상과 대기오염 등에 의한 피해를 예방하기 위한 제품은 아직 미비하다. 여러 피해 사례들을 조사해본 결과, 중국발 황사로 인한 초미세먼지, 공장의 화학 기체, 자동차 매연 등에 의해 대기가 오염되면서 사람들은 호흡기 질환에 쉽게 걸리거나, 집 내부에 미세먼지가 뿌옇게 쌓이기도 한다. 또한, 창문을 열어놓은 채 장시간 외출 시, 미세먼지나 폭우 등으로 인해 실내가 엉망이 되기도 한다. 그 외에도 거동이 불편한 노약자나 장애인만이 집에 있는 경우, 창문을 직접 개폐하는 것에 어려움이 있기에 보호자가 돌아올 때까지 견뎌야만 한다. 이러한 주거환경의 피해를 예방하기 위한 연구 과정에서 실내외의 교차점을 창문으로 설정하였고, 자동화와 편의성을 추가하고자 하였다. 창문 개폐의 자동화 구현을 위해 아두이노 개발환경에 5가지 센서를 적용하였고, 편의성을 높이기 위해 라즈베리 파이 개발환경에 OK구글 오픈소스를 활용하여 음성인식 기능을 적용하였다.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.36 no.1
• /
• pp.1-9
• /
• 2023

According to the recent global warming, it is necessary to use energy efficiently together with eco-friendly energy. The development of alternative technologies is requisite for managing the current energy and climate crises. In this regard, "smart windows," which can control solar radiation, can be used to mitigate energy demands. Electrochromic devices (ECDs) effectively control the amount of solar energy reaching commercial and other living areas and maintain climate conditions via color modulation in response to small external stimuli, such as temperature and light irradiation. However, the performance and the stability of ECDs depend on the state of the electrolyte and sealing of the device. To resolve the aforementioned issues, an ECD was manufactured by using a poly (methyl methacrylate) (PMMA)-based gel polymer electrolyte (GPE), and a laminating method was used to adequately seal the ECD. The concentrations of PMMA, acetonitrile (ACN), and ferrocene (Fc) were controlled to optimize the composition of the GPE to achieve an enhanced electrochromic performance. The fabricated GPE-based ECD afforded high optical contrast (~81.92%), with high electrochromic stability up to 10,000 cycles. Moreover, the lamination method employing the GPE could be used to fabricate large-area ECDs.

• The Journal of the Korea Contents Association
• /
• v.16 no.10
• /
• pp.503-513
• /
• 2016

Innovator and Early Adopter are main clients of smart phone until now, but the silver generation enjoying price stability and the Internet emerges, so a strategy of the importance, systematic classification, and focus of a neglected class is needed. It is necessary to analyze UI that can departmentalize not a neglected class limited to the silver generation but potential users who can be voluntarily users and can secure them. To secure them, the researcher analyzes how Windows, Icons, Mouse Pull-Down-Menus(WIMP) of UI has been applied in the process that skeuomorphism UI of iPhone, Metro UI of MS, and Material UI of Google change. As a result of an analysis, skeuomorphism is not entirely new and has secured potential users slowly with a method to compensate and improve a part that users disregard. As a concept of touch UI, Metro UI considered potential users from the beginning but did not secure them with new and epoch-making UI. However, Material UI of Google compensates the weaknesses of skeuomorphism UI and Metro UI and emphasizes cost-effectiveness, so has developed into UI that can secure final consumers of potential users. Therefore, to secure potential users, it should make users themselves understand why they should use smart phone, and it should approach with more organized studies on UI through feedback of observation and direct talks.

• Applied Chemistry for Engineering
• /
• v.31 no.3
• /
• pp.291-298
• /
• 2020

ZITO/Ag/ZITO multilayer transparent electrodes at room temperature on glass substrates were prepared using RF/DC magnetron sputtering. Transparent conductive films with a sheet resistance of 9.4 Ω/㎡ and a transmittance of 83.2% at 550 nm were obtained for the multilayer structure comprising ZITO/Ag/ZITO (100/8/42 nm). The sheet resistance and transmittance of ZITO/Ag/ZITO multilayer films meant that they would be highly applicable for use in polymer-dispersed liquid crystal (PDLC)-based smart windows due to the ability to effectively block infrared rays (heat rays) and thereby act as an energy-saving smart glass. Effects of the thickness of the PDLC layer and the intensity of ultraviolet light (UV) on electro-optical properties, photopolymerization kinetics, and morphologies of difunctional urethane acrylate-based PDLC systems were investigated using new transparent conducting electrodes. A PDLC cell photo-cured using UV at an intensity of 2.0 mW/c㎡ with a 15 ㎛-thick PDLC layer showed outstanding off-state opacity, good on-state transmittance, and favorable driving voltage. Also, the PDLC-based smart window optimized in this study formed liquid crystal droplets with a favorable microstructure, having an average size range of 2~5 ㎛ for scattering light efficiently, which could contribute to its superior final performance.