• Title/Summary/Keyword: Control thru Internet

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APPLICATION OF IT TO REDUCE FLOOD DAMAGE DURING HEAVY RAINFALL DISASTER IN JAPAN

  • Kang, Sang-Hyeok;Motoyuki ushiyama, Motoyuki-Ushiyama
    • Water Engineering Research
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    • v.4 no.4
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    • pp.187-192
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    • 2003
  • The rainfall observation systems have largely been improved in Japan. The Japan Meteorological Agency, prefecture governments, and other administrative bodies have also increased the number of rain gauges thru out the country. The density of observatories is now one per several $\km^2$. Heavy rainfall information systems have been improved. Besides it, the Internet was popularized in the late 1990s, and has been used to transmit data of heavy rainfall. Internet accessible cellular phones have been popular in Japan since 1999. Such phones are expected to be useful in the field of disaster warning announcements, because they can automatically notify users bye-mail of pending disasters. The use of the Internet during natural disasters is groundbreaking in Japan today. However, in order to use disaster information effectively on Internet it is necessary to investigate how to use the information during the rainfall disaster. Therefore in our study we suggest methods on the effective construction and their use of information technology on Internet.

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Design and Implementation of Tele-operation system based on the Haptic Interface

  • Lee, Jong-Bae;Lim, Joon-Hong
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.3 no.2
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    • pp.161-165
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    • 2003
  • In this paper, we investigate the issues on the design and implementation of tele-operation system based on the haptic interface. Here, the 3-DOF haptic device and the X-Y-Z stage are employed as master controller and slave system respectively. For this master-slave system, the force feedback algorithm, the modeling of virtual environments and the control method of X-Y-Z stage are presented. In this paper, internet network is used for data communication between master and slave. We construct virtual environment of the real convex surface from the force-feedback in controlling the X-Y-Z stage and measuring the force applied by the 3-DOF haptic device.

An Alternative Design of the Internet Survey for Data Quality (데이터 품질을 위한 인터넷 설문조사의 대안적 설계)

  • Kim, Byoung-Gil;Lee, Ki-Dong
    • Journal of Digital Convergence
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    • v.8 no.3
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    • pp.129-141
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    • 2010
  • Though an internet survey, an alternative method for the off-line survey, has various merits is, it still has some problems such as sampling bias and low reliability from insincerity during survey. Especially the exogenous variables such as sample respondents of the environment should be controlled to make internet survey trustworthy. This study attempts to design and implement such system that can help researchers to control the network and sampling environment and behaviors on respondents. Thru the various Question forms and structured Questionnaire design, this study tries to contribute the improvement of survey satisfaction and the reliability for survey result in internet survey system.

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Transmission Control Method of Beacon Signal Based on Bluetooth of Lower Electric Power (저 전력 블루투스 기반 비콘 신호 전송 제어 방법)

  • Oh, Am-suk
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.20 no.6
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    • pp.1136-1141
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    • 2016
  • IoT technology has been used as a core technology of convergence service that needs intelligent information processing, and the importance is largely emerging now. And internal network construction thru IoT interaction device can connect with IoT device effectively, provide diverse services by connection with open platform. Especially, beacon that is based on low electric power bluetooth device is receiving attention as one of core technology of IoT. Beacon technology is utilized widly in various fields of industry, and there are lot of demands in the specific environment and conditions beyond the basic function. On this thesis, the authors are proposing the beacon device that utilized acceleration sensor and hole sensor. this beacon device can control the target on specific situation thru sensing of moving target. For the more, we will expect to apply to the various type of factory environments like detachable installation, optimized management using sensor.

Mediating Effects of Psychological Weakness between the Soldiers Internet Addiction and Their Military Adjustment (군 병사들의 입대 전 인터넷 중독과 군 생활 적응의 관계에서 심리적 취약성의 매개효과)

  • Han, In-Young;Koo, Seung-Shin
    • The Journal of the Korea Contents Association
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    • v.12 no.7
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    • pp.314-322
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    • 2012
  • The purpose of the study is to examine the mediating effects of psychological weakness between the soldiers internet addiction and their adjustments in the military. 486 soldiers in Kangwon-province and Kyonggi-province participated in the survey thru convenient sampling. For the study, the correlation analysis and the multiple regression were conducted. The results are as follows: First, correlations among the soldiers internet addiction, psychological weakness, solitude, lack of control, lack of efficacy, and military adjustments were found significant. Secondly, psychological weakness was verified as mediating effects in the relationship between the soldiers internet addiction and military adjustments. The study indicates mental health services for soldiers with internet addiction.

Development of an IoT Smart Home System Using BLE (BLE통신을 이용한 IoT 스마트홈 모니터링 시스템 개발)

  • Duong, Cong Tan;Kim, Myung Kyun
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.8 no.6
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    • pp.909-917
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    • 2018
  • Recently, the Internet of Thing (IoT) technology is expanding explosively in the number of devices and applications in many application areas. In IoT systems, sensors and actuators are connected to the Internet and cooperate to do some applications by exchanging information. In this paper an IoT smart home system is developed to monitor and control home devices easily. Our system consists of sensor devices, IoT gateways, and an IoT server. Sensor devices developed using Rfduino sense the physical world and transmit their data using BLE to the IoT server thru the IoT gateway. We implemented the IoT gateway using Raspberry Pi and the IoT server using ARTIK cloud. We installed our system and made a test in our lab, which showed that our system can be installed and managed easily and extended its functionality in an easy way. By taking advantage of the rule mechanism and action messages of ARTIK cloud, we implemented the control of device parameters easily by sending action messages to the ARTIK cloud.

Harmful Traffic Control Using Sink Hole Routing (싱크홀 라우팅을 이용한 유해 트래픽 제어)

  • Chang, Moon-Soo;Lee, Jeong-Il;Oh, Chang-Suk
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.4
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    • pp.69-76
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    • 2009
  • The construction of Internet IP-based Network is composed of router and switch models in a variety of companies. The construction by various models causes the complexity of the management and control as different types of CLI is used by different company to filter out abnormal traffics like worm, virus, and DDoS. To improve this situation, IETF is working on enacting XML based configuration standards from NETCONF working group, but currently few commands processing at the level of operation layer on NETCONF are only standardized and it's hard for unified control operation process between different make of system as different company has different XML command to filter out abnormal traffics. This thesis proposes ways to prevent abnormal attacks and increase efficiency of network by re-routing the abnormal traffics coming thru unified control for different make of systems into Sinkhole router and designing a control system to efficiently prevent various attacks after checking the possibility of including abnormal traffics from unified control operation.