• Title/Summary/Keyword: Service control

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Prevent Illegal Access Control for Secure Healthcare System (불법적인 접근 제어 방지를 위한 안전한 헬스케어 시스템)

  • Seo, Dae-Hee;Baek, Jang-Mi;Moon, Yong-Hyuk;Cho, Dong-Sub
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.3
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    • pp.657-663
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    • 2010
  • Today, rapid evolution of Internet makes various types of services in ubiquitous environment are intelligent and active. As a result, user's demand on high quality of life increases and health care service based on ubiquitous environment draws a lot of attention. However, user's private information used for health care service is illegally distributed and exposed, causing serious individual and social problems. Therefore, this thesis is intended to suggest a secure health care service to prevent unauthorized third party's access and to protect user's privacy in health care systems. The proposed scheme establishes a session key through communication channel between health care system and user based on explicit mutual authentication and provides secure communication and access control, improving security as one of the leading health care systems.

Development of Humanoid Joint Module for Safe Human-Robot Interaction (인간과의 안전한 상호 작용을 고려한 휴머노이드 조인트 모듈 개발)

  • Oh, Yeon Taek
    • The Journal of Korea Robotics Society
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    • v.9 no.4
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    • pp.264-271
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    • 2014
  • In this study, we have developed the humanoid joint modules which provide a variety of service while living with people in the future home life. The most important requirement is ensuring the safety for humans of the robot system for collaboration with people and providing physical service in dynamic changing environment. Therefore we should construct the mechanism and control system that each joint of the robot should response sensitively and rapidly to fulfill that. In this study, we have analyzed the characteristic of the joint which based on the target constituting the humanoid motion, developed the optimal actuator system which can be controlled based on each joint characteristic, and developed the control system which can control an multi-joint system at a high speed. In particular, in the design of the joint, we have defined back-drivability at the safety perspective and developed an actuator unit to maximize. Therefore we establish a foundation element technology for future commercialization of intelligent service robots.

(Design and Implementation of RTP Security Control Protocol for Protecting Multimedia Information) (멀티미디어 정보 보호를 위한 RTP 보안 제어 프로토콜 설계 및 구현)

  • 홍종준
    • Journal of the Korea Computer Industry Society
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    • v.3 no.9
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    • pp.1223-1234
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    • 2002
  • RTP payload must be encrypted for providing commercial VOD service or private video conference over the Internet. Encryption/decryption delay is minimized because there are constraints in transporting a multimedia data through the Internet. Therefore, encryption algorithm is changed with considering network traffic md load. During many users participate in the same multimedia service, an user who already left the service can receive and decrypt the RTP payload because of knowing the encryption key. In this paper, Security Control Protocol for RTP is designed and implemented for changing the encryption algorithm and the key.

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Control System of Service Robot for Hospital (병원용 서비스 로봇의 제어시스템)

  • 박태호;최경현;이석희
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.540-544
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    • 2001
  • This paper addresses a hybrid control architecture for the hospital service robot, SmartHelper. In hybrid architecture, the deliberation takes place at planning layer while the reaction is dealt through the parallel execution of operations. Hence, the system presents both a hierarchical and an heterarchical decomposition, being able to show a predictable response while keeping rapid reactivity to the dynamic environment. The deliberative controller accomplishes four functions which are path generation, selection of navigation way, command and monitoring. The reactive controller uses fuzzy and potential field method for robot navigation. Through simulation under a virtual environment IGRIP, the effectiveness of the hybrid architecture is verified.

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Supporting Quality of Experience based on Service Level Agreement for Heterogeneous Networks

  • Lee, Moon-Ho;Lee, Jong-Chan
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.7
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    • pp.17-22
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    • 2016
  • In this paper we propose a novel QoE control scheme based on Service Level Agreement (SLA) which enables to guarantee the user perceived service quality of various high-quality mobile multimedia services such as mobile video streaming and real-time network games to a certain level. For this purpose, a SLA control structure is adopted to provision QoE, and a novel resource management scheme gets coupled with this control structure. Simulation results show that our proposed scheme can decrease the average delay and increase the total throughput by adjusting SLA.

Study on Development of Hospital Service Robot SmartHelper (병원용 서비스 로봇 SmartHelper 개발에 관한 연구)

  • Choi, Kyung-Hyun;Lee, Seok-Hee;Park, Tae-Ho
    • Proceedings of the KSME Conference
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    • 2001.06b
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    • pp.325-329
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    • 2001
  • This paper addresses a control architecture for the hospital service robot, SmartHelper. With a sensing-reasoning-acting paradigm, the deliberation takes place at planning layer while the reaction is dealt through the parallel execution of operations. Hence, the system presents both a hierarchical and an heterarchical decomposition, being able to show a predictable response while keeping rapid reactivity to the dynamic environment. The deliberative controller accomplishes four functions which are path generation, selection of navigation way, command and monitoring. The reactive controller uses fuzzy and potential field method for robot navigation. Through simulation under a virtual environment IGRIP, the effectiveness of the control architecture is verified.

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Service Flow Control for Accesses to Home Network (홈네트워크 접근 제어를 위한 서비스 흐름 제어)

  • Kim Geon-Woo;Kim Do-Woo;Lee Jun-Ho;Han Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2006.05a
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    • pp.737-740
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    • 2006
  • Home network system provides users with various kinds of services such as home device control, entertainment, local information service and etc. There are a lot of on-going researches and developments on home service environment regardless of time and space via convenient home devices. So, in this paper, we guide the specific model for real-time access control to various services and propose the extensible security policy model.

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Conceptual Design of Ground Control System for Stratospheric Platform for Telecommunications Application (성층권플랫폼 관제시스템의 설계 개념 연구)

  • Kang, Jay
    • Journal of Advanced Navigation Technology
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    • v.7 no.1
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    • pp.82-90
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    • 2003
  • Recently, a new concept of telecommunication system, utilizing stratospheric platforms such as airships or airplanes, has been proposed. This system aims to provide broadband multimedia services, i.e. high-rate multimedia service, high-rate internet service, and leased line service. In this study, operation concept of the system is defined and by allocating required functions on the system and its subsystems, conceptual design of the ground control system for the stratospheric platforms is established and proposed.

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Reproductive Functions in Nili-Ravi Buffaloes after Short Term Treatment with Recombinant Bovine Somatotropin Hormone

  • Usmani, R.H.;Athar, I.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.10 no.2
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    • pp.229-232
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    • 1997
  • Effects of short-term treatment with somidobove (recombinantly produced bovine somatotropin, BST) on estrous cyclicity and fertility were studied in dairy buffaloes. Twenty buffaloes of Nili-Ravi breed calving during the same season were assigned to either control (n=8) or treated group (n=12). The buffaloes of treated group received single infection (prolonged release) of 320 mg of somidobove on day-60 postpartum. The mean values for interval to first postpartum estrus, first service conception rate, services per conception, service period and calving interval for the treated group were 96.4 days, 66.7%, 1.70, 164 days and 473 days, respectively. The corresponding values for the control group were 92.5 days, 62.5%, 1.87, 135 days and 439 days. Means of all variables did not differ between control and treated group (p > 0.05). Three buffaloes of the control and four buffaloes of the treated group did not conceive at first service. Out of these, two buffaloes of control and one buffalo of treated group exhibited normal estrous cycles. It is concluded from these data that short term BST-treatment has no adverse effect on reproductive functions of dairy buffaloes.

Ancillary Service Requirement Assessment Indices for the Load Frequency Control in a Restructured Power System with Redox Flow Batteries

  • Chandrasekar, K.;Paramasivam, B.;Chidambaram, I.A.
    • Journal of Electrical Engineering and Technology
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    • v.11 no.6
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    • pp.1535-1547
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    • 2016
  • This paper proposes various design procedures for computing Power System Ancillary Service Requirement Assessment Indices (PSASRAI) for a Two-Area Thermal Reheat Interconnected Power System (TATRIPS) in a restructured environment. In an interconnected power system, a sudden load perturbation in any area causes the deviation of frequencies of all the areas and also in the tie-line powers. This has to be corrected to ensure the generation and distribution of electric power companies to ensure good quality. A simple Proportional and Integral (PI) controllers have wide usages in controlling the Load Frequency Control (LFC) problems. So the design of the PI controller gains for the restructured power system are obtained using Bacterial Foraging Optimization (BFO) algorithm. From the simulation results, the PSASRAI are calculated based on the settling time and peak over shoot concept of control input deviations of each area for different possible transactions. These Indices are useful for system operator to prepare the power system restoration plans. Moreover, the LFC loop coordinated with Redox Flow Batteries (RFB) has greatly improved the dynamic response and it reduces the control input requirements and to ensure improved PSASRAI, thereby improving the system reliability.