• Title, Summary, Keyword: SMART-P

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Review on Integration of Smart Grid into Smart City (스마트 그리드(스마트 에너지)의 스마트 시티에의 통합에 대한 문헌 연구)

  • Sim, Min Kyu
    • The Journal of Society for e-Business Studies
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    • v.25 no.1
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    • pp.35-43
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    • 2020
  • Smart grid aims to achieve efficient energy-related operations. Smart grid will become a central component of Smart city that aims to improve citizens' quality of life. This paper validates that smart grid at matured state is the state where smart grid is naturally integrated into smart grid. Also, this paper describes smart grid as an essential element of smart city. This paper discusses necessary social infrastructure and investigates necessary technological features.

A Safety Analysis of a Steam Generator Module Pipe Break for the SMART-P

  • Kim Hee Kyung;Chung Young-Jong;Yang Soo-Hyung;Kim Hee-Cheol;Zee Sung-Quun
    • International Journal of Safety
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    • v.3 no.1
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    • pp.53-58
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    • 2004
  • SMART-P is a promising advanced small and medium category nuclear power reactor. It is an integral type reactor with a sensible mixture of new innovative design features and proven technologies aimed at achieving a highly enhanced safety and improved economics. The enhancement of the safety and reliability is realized by incorporating inherent safety improving features and reliable passive safety systems. The improvement in the economics is achieved through a system simplification, and component modularization. Preliminary safety analyses on selected limiting accidents confirm that the inherent safety improving design characteristics and the safety system of SMART-P ensure the reactor's safety. SMART-P is an advanced integral pressurized water reactor. The purpose of this study is for the safety analysis of the steam generator module pipe break for the SMART-P. The integrity of the fuel rod is the major criteria of this analysis. As a result of this analysis, the safety of the RCS and the secondary system is guaranteed against the module pipe break of a steam generator of the SMART-P.

Development of Smart pH Reader Based on Android Smart Phone (안드로이드 스마트폰 기반 Smart pH Reader 개발)

  • Kim, Min J.;Chang, Byoung-Yong;Joo, Moon G.
    • IEMEK Journal of Embedded Systems and Applications
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    • v.8 no.4
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    • pp.227-233
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    • 2013
  • In this paper, we propose an implementation of pH reader on Android smart phone by using Eclipse and SDK. After taking a picture of pH spectrum and tested litmus paper at the same time, we save the picture. From the picture, reference values in RGB and YUB of all pH color in the spectrum are obtained and then those of a chosen point by user in the litmus paper are to be compared with. The distances between the reference colors and the litmus paper's color are measured by Euclidean distance in RGB or YUB coordinate. The nearest two pH values are taken to find the weighted average of the result. Series of test show the proposed scheme is feasible and has performance within 10% error.

A convergence study the association between addictive smart phone use, dry eye syndrome, upper extremity pain and depression among college students (일 지역 대학생의 스마트 폰 중독사용과 안구건조증, 상지통증 및 우울간의 관계에 대한 융합 연구)

  • Paek, Kyung Shin
    • Journal of the Korea Convergence Society
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    • v.8 no.1
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    • pp.61-69
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    • 2017
  • This study was to identify the correlation between dry eye syndrome, upper extremity pain, depression and addictive smart phone use among college students. Data were collected from 286 college students using a self-report questionnaire. 15.0% of participants have an addictive smart phone use. There were significant differences by dry eye syndrome(t=-4.38, p<.001), neck pain(t=-2.60, p<.05) and depression(t=-4.15, p<.001) according to the addictive smart phone use. Dry eye syndrome(r=.332, p<.001), neck pain(r=.143, p<.05), hand pain(r=.138, p<.05) and depression(r=.402, p<.001) were positively related to addictive smart phone use. Strategies to diminish depression, and to prevent dry eye syndrome and neck pain in college students will be an important intervention component to prevent addictive smart phone use and health problems in future studies.

Relationship among the Korean Adolescents Obesity, Health Behavior and Smart phone Usage (청소년의 건강행태 및 스마트폰 사용 특성과 비만과의 관련성)

  • Park, Min Hee;Song, Hye Young
    • Journal of Korean Public Health Nursing
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    • v.33 no.1
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    • pp.47-58
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    • 2019
  • Purpose: Regarding the rapid growth of the obesity in Korea's youths, environmental factors as well as biological tendencies have been major focus of years of study. Methods: This study, as a secondary analysis research, bases its source upon the raw data from the 13th on-line survey of the Korean adolescents' health behaviors. In particular, it is a descriptive research for clarifying the relevance of the Korean youths' smart phone use with their health behaviors and obesity. Results: In logistic analysis, variables showing a significant difference are as follows: soft drinks frequency(p<.001), sweet drinks intake frequency(p<.001), fast food intake frequency(p<.001) and smoking status (p=.005). Based on the amount of time the teenagers using smart phones, there have been different results in the risk of obesity. Four to six hours a week of smart phone use (p=.002) has a 1.132 times higher risk, six to eight hours(p<.001) are 1.212 times higher, over eight hours(p=.020) are 1.132 times higher, than less than two hours'. Conclusion: This study has significance in that it has emphasized the new lifestyle, teenagers' smart phone use, as an additional important factor for the increased risk of obesity.

Parenting Attitude and Over Dependence on Smart Phone Among Middle School Students: Mediating Effect of Basic Psychological Needs (부모 양육 태도가 중학생의 스마트폰 과의존에 미치는 영향: 기본심리 욕구의 매개효과)

  • Lee, Hyun-Yi;Kim, Young-Sik
    • The Journal of the Korea Contents Association
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    • v.18 no.12
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    • pp.62-74
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    • 2018
  • This study was proposed to examine the mediating effect of basic psychological needs on how parenting attitude affect middle school students with over-dependence on smart phone. This study utilized 2017 survey research by National Information Society Agency (NIA), namely a long-term follow-up study of 901 people with over-dependence on internet and smart phone. This study showed two findings. First, over-dependence on smart phone had correlations with basic psychological needs- autonomy(r=-.22, p<.001) and competence(r=-.13, p<.001); with parenting attitude- positive parenting(r=-.21, p<.001) and negative parenting(r=.15, p<.001). Second, both parenting attitude and basic psychological needs had a causal relationship with over-dependence on smart phone. These results can provide a basis to reconsider social awareness on over-dependence on smart phone among middle school students. This study proposed few research directions for further study to prevent over-dependence on smart phone and to educate parents.

A Study on the Relationship Between Smart Mobile Devices Use and Work Performances of Public Agencies: Focused on verification of the relationship between performances using TAM (공공기관 근무자의 스마트 모바일기기 사용과 업무성과의 관계에 관한 연구: TAM 모형을 활용한 업무성과와의 관계 검증을 중심으로)

  • Lim, Sung-Jin;Han, Kyeong-Seok;Jung, Mi-Ra
    • Journal of Digital Contents Society
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    • v.18 no.7
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    • pp.1465-1474
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    • 2017
  • The study analyzed how the user uses the smart mobile device to assess the effects of the user's acceptance factor and user-factors affecting the work performance of Public Agencies. And Prove that leveraging smart devices can improve your business performance, It was aimed at making strategic recommendations to improve the suitability of smart mobile devices and Tasks. Smart mobile devices User Innovation has affected Usefulness, such as B=.296. p.000, it also affected Perceived Ease-of-Use, such as B=.326, p.000. job fitness has affected Perceived Ease-of-Use, such as B=.261, p.001. Usefulness and Ease-of-Use had a positive affect on work performance. Each of affect on much of B=.382 and B=.488(p.000). At the conclusion, it has been validated that the effects of smart mobile devices user Innovation and job fitness on work performances are mediated by perceived usability and perceived ease of use of the smart mobile device.

Investigation of smart multifunctional optical sensor platform and its application in optical sensor networks

  • Pang, C.;Yu, M.;Gupta, A.K.;Bryden, K.M.
    • Smart Structures and Systems
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    • v.12 no.1
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    • pp.23-39
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    • 2013
  • In this article, a smart multifunctional optical system-on-a-chip (SOC) sensor platform is presented and its application for fiber Bragg grating (FBG) sensor interrogation in optical sensor networks is investigated. The smart SOC sensor platform consists of a superluminescent diode as a broadband source, a tunable microelectromechanical system (MEMS) based Fabry-P$\acute{e}$rot filter, photodetectors, and an integrated microcontroller for data acquisition, processing, and communication. Integrated with a wireless sensor network (WSN) module in a compact package, a smart optical sensor node is developed. The smart multifunctional sensor platform has the capability of interrogating different types of optical fiber sensors, including Fabry-P$\acute{e}$rot sensors and Bragg grating sensors. As a case study, the smart optical sensor platform is demonstrated to interrogate multiplexed FBG strain sensors. A time domain signal processing method is used to obtain the Bragg wavelength shift of two FBG strain sensors through sweeping the MEMS tunable Fabry-P$\acute{e}$rot filter. A tuning range of 46 nm and a tuning speed of 10 Hz are achieved. The smart optical sensor platform will open doors to many applications that require high performance optical WSNs.

Development and Evaluation of Smart Secondary Controls Using iPad for People with Hemiplegic Disabilities

  • Song, Jeongheon;Kim, Yongchul
    • Journal of the Ergonomics Society of Korea
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    • v.34 no.2
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    • pp.85-101
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    • 2015
  • Objective: The purpose of this study was to develop and evaluate smart secondary controls using iPad for the drivers with physical disabilities in the driving simulator. Background: The physically disabled drivers face problems in the operation of secondary control devices that accept a control input from a driver for the purpose of operating the subsystems of a motor vehicle. Many of conventional secondary controls consist of small knobs or switches that physically disabled drivers have difficulties in grasping, pulling or twisting. Therefore, their use while driving might increase distraction and workload because of longer operation time. Method: We examined the operation time of conventional and smart secondary controls, such as hazard warning, turn signal, window, windshield wiper, headlights, automatic transmission and horn. The hardware of smart secondary control system was composed of iPad, wireless router, digital input/output module and relay switch. We used the STISim Drive3 software for driving test, customized Labview and Xcode programs for interface control of smart secondary system. Nine subjects were involved in the study for measuring operation time of secondary controls. Results: When the driver was in the stationary condition, the average operation time of smart secondary devices decreased 32.5% in the normal subjects (p <0.01), 47.4% in the subjects with left hemiplegic disabilities (p <0.01) and 38.8% in the subjects with right hemiplegic disabilities (p <0.01) compared with conventional secondary devices. When the driver was driving for the test in the simulator, the average operation time of smart secondary devices decreased 36.1% in the normal subjects (p <0.01), 41.7% in the subjects with left hemiplegic disabilities (p <0.01) and 34.1% in the subjects with right hemiplegic disabilities (p <0.01) compared with conventional secondary devices. Conclusion: The smart secondary devices using iPad for people with hemiplegic disabilities showed significant reduction of operation time compared with conventional secondary controls. Application: This study can be used to design secondary controls for adaptive vehicles and to improve the quality of life of the people with disabilities.

Comparison of Factors associated with SmartPhone over-Usage: Focusing on Self-Control, Mental health and Interrelationship (대학생들의 스마트폰사용수준에 따른 자기통제력, 정신건강, 대인관계 비교)

  • Jang, Hee-Jung;Kwag, Youn-Kyoung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.1
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    • pp.146-154
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    • 2015
  • This study was conducted, to investigate the level of self-control, mental health and the interrelationship of college students and to analyze the differences between these variables according to the level of smart phone usage. The subjects of our study were collected 246 students. The survey was conducted from April 25th to May 28th in 2012. The result indicated that cellphone overuse group has the lowerer self-control(t=3.53, p=.001) and the more mental health discomfort(t=-3.61, p=.000) than non-smart phone overuse group. In non-smart phone overuse group, the usage of smart phone was negatively correlated with self-control(r=-0.27, p=.005) and communication(r=-0.20, p=.043). And in the other group, the usage of smart phone was positively correlated with mental health discomfort(r=0.22, p=.009). These findings imply that it maybe needed to examine effect factors of the smart phone usage according to the level of smart phone usage.