• Title/Summary/Keyword: Certificate System

Search Result 575, Processing Time 0.028 seconds

Using Choice Experiments Methods to Estimate Consumer Preference of Rice (실험선택분석을 이용한 쌀의 소비자 선호 분석)

  • Yoo, Jin-Chae;Jeong, Yun-Hee;Kong, Ki-Seo
    • Korean Journal of Organic Agriculture
    • /
    • v.17 no.2
    • /
    • pp.135-150
    • /
    • 2009
  • This paper was to use choice experiments in the analysis of consumer choice behavior and preferences for five different attributes(the origin of rice, a quality certificate, a quality control, a traceability system, the price of rice) in Cheongju City. Completed surveys yielded 712 responses which were analyzed using the conditional logit model to analyze the marginal willingness to pay of the four attributes(the origin of rice, a quality certificate, a quality control and a traceability system) per household and estimated the marginal willingness to pay of the set of feasible options. The result of this study can be used as a guide for the rice industry in the design of possible labeling schemes.

  • PDF

750kW Gearless Type Wind Turbine Generator System (750kW급 Gearless형 국산화 풍력발전시스템)

  • Ryu, Ji-Yoon;Park, Jin-Il;Kim, Dae-Hyun;Hwang, Jin-Su;Kim, Doo-Hoon
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 2006.06a
    • /
    • pp.245-248
    • /
    • 2006
  • The first of korean 750kW gearless type wind turbine is developed. The wind turbine is designed, manufactured and tested by GE regulation and obtained the design certificate by GL. And the performance test is being performed at the demonstration site now. This paper presents the history of development and performance test for 750kW gearless type wind turbine.

  • PDF

Secure Electronic Trading System for Online Game-Items (온라인 게임 아이템의 안전한 전자 거래 시스템)

  • 정윤경;기준백;천정희
    • Journal of the Korea Institute of Information Security & Cryptology
    • /
    • v.13 no.3
    • /
    • pp.91-99
    • /
    • 2003
  • In this paper, we analyze the current trading systems and suggest two secure electronic trading systems that make a fair exchange for online game items. The system is made up for the weak points in the current item trading system. In the proposed system, a game server issues a certificate each item on the user's request. On the one hand, this certificate is used to recover the item when the system error is occured. On the other hand, the user may exchange it with another item or cyber money. The proposed system supports private and reliable trading. Further, the trading can be completed only by online processing.

Biometric-based key management for satisfying patient's control over health information in the HIPAA regulations

  • Bui, Quy-Anh;Lee, Wei-Bin;Lee, Jung-San;Wu, Hsiao-Ling;Liu, Jo-Yun
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.14 no.1
    • /
    • pp.437-454
    • /
    • 2020
  • According to the privacy regulations of the health insurance portability and accountability act (HIPAA), patients' control over electronic health data is one of the major concern issues. Currently, remote access authorization is considered as the best solution to guarantee the patients' control over their health data. In this paper, a new biometric-based key management scheme is proposed to facilitate remote access authorization anytime and anywhere. First, patients and doctors can use their biometric information to verify the authenticity of communication partners through real-time video communication technology. Second, a safety channel is provided in delivering their access authorization and secret data between patient and doctor. In the designed scheme, the user's public key is authenticated by the corresponding biometric information without the help of public key infrastructure (PKI). Therefore, our proposed scheme does not have the costs of certificate storage, certificate delivery, and certificate revocation. In addition, the implementation time of our proposed system can be significantly reduced.

An Effective Protection Mechanism for SSL Man-in-the-Middle Proxy Attacks (SSL MITM 프록시 공격에 대한 효과적 방어방법)

  • Lim, Cha-Sung;Lee, Woo-Key;Jo, Tae-Chang
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.16 no.6
    • /
    • pp.693-697
    • /
    • 2010
  • In current e-commerce system, it happens that client's confidential information such as credit card numbers, pin numbers, or digital certificate may pass through a web proxy server or an altered proxy server without client's awareness. Even though the confidential information is encrypted and sent through SSL(Secure Sockets Layer) or TLS(Transport Layer Security) protocol, it can be exposed to the risk of sniffing by the digital certificate forgery at the proxy server, which is called the SSL MITM(Man-In-The-Middle) Proxy attack. In this paper, current credit card web-payment systems, which is weak at proxy information alternation attack, are analyzed. A resolution with certificate proxy server is also proposed to prevent the MITM attack.

The Past, Present and Future of Health Education Specialists in Korea (보건교육사의 어제, 오늘 그리고 미래)

  • Nam, Chul-Hyun
    • Korean Journal of Health Education and Promotion
    • /
    • v.27 no.2
    • /
    • pp.1-15
    • /
    • 2010
  • Objectives: The purpose of this study was to examine the past and present status and roles of health education specialists in Korea, and to suggest future directions for developing health education profession. Results and conclusion: The Korean government has made various efforts for people's health. the National Health Promotion Law was enacted in Korea in 1995. As the results of Korean Association for Health Education' intensive efforts, the national certificate of health education specialist bill has been passed the National Assembly on September 29, 2003. According to The National Health Promotion Law, central and local government should recommend health promotion related corporaters, agencies and organizations to hire certified health education specialist. The first national examination for certificate of health education specialists was held in March, 2010. As the result, a total of 2,246 applicants was passed for certificate of health education specialists. It is a serious concern that community residents' knowledge level of health is very low. therefore, the role of health education specialists with the professional ability to carry out health education is essential. It is clear that the activity of health educators is essential, Then, It is necessary articles related to the appointment of health educators in the official appointment regulation or law. Thus the health education specialist must be appointed as a public officer in health centers, operaters or the health department of the government.

A CRL Update Protocol for an OCSP Server of WAVE System (WAVE 시스템 OCSP 서버를 위한 CRL 업데이트 프로토콜)

  • Choi, Beom-Jin;Kim, Eun-Gi
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2014.11a
    • /
    • pp.403-404
    • /
    • 2014
  • WAVE(Wireless Access in Vehicular Environment)에서 V2V(Vehicle to Vehicle) 통신 시 OBU(On Board Unit)인 자동차 단말은 수신한 정보가 제대로 된 정보인지를 확인하는 과정에서 공인인증서가 필요하다. 동시에 자동차 단말은 이 공인인증서의 상태가 유효한 지를 확인해야 한다. 이것을 확인하는 방법은 자동차 단말이 도로변에 설치돼 있는 RSU(Road Side Unit)인 OCSP(Online Certificate Status Protocol) 서버에게 공인인증서의 상태 확인 요청을 하는 것이다. OCSP 서버는 자동차 단말의 요청에 응답하기 위해서 인증서 폐지 목록인 CRL(Certificate Revocation List)을 가지고 있어야 한다. 본 논문에서는 WAVE 시스템의 OCSP 서버가 공인인증서 상태 정보를 자동차 단말로 알려줄 수 있도록 하기 위해 CA(Certificate Authority)의 CRL 저장소로부터 CRL 을 업데이트 하는 프로토콜을 제안한다. OCSP 서버가 CRL 을 업데이트 할 때, OCSP 서버가 가지고 있는 CRL 과 CRL 저장소가 가지고 있는 CRL 의 값을 비교하여 두 값이 같은 경우에는 CRL 을 업데이트 하지 않도록 한다. OCSP 서버가 선택적으로 CRL 을 업데이트 함으로써 불필요한 부하를 줄일 수 있을 것으로 기대된다.

Guidelines on process improvement and certificate program based on CMMI Model (철도차량 CMMI 모델기반 프로세스 개선 및 인증을 위한 지침)

  • Cho, Chi-Hwan;Cho, Moon-Soo
    • Proceedings of the KSR Conference
    • /
    • 2008.11b
    • /
    • pp.2021-2034
    • /
    • 2008
  • This paper shows the result of study on the process improvement/innovation based on CMMI(Capability Maturity Model Integration) for Development V1.2 staged representation in the view of engineering area of software, hardware and system. This paper intend to help rolling stock industry to define & innovate process and finally obtain certificate for achievement of CMMI V1.2 from SEI authorized SCAMPI Lead Appraiser through the introduction experienced by Hyundai Rotem Company(car-builder and supplier of electronic & electrical equipment) such as why CMMI-based process definition & improvement are planned and how each processes of CMMI V1.2 Level 3 have been implementing and how obtaining the certificate of CMMI Maturity Level 3 of CMMI for Development V1.2 staged representation etc. This paper shows the introduction to CMMI V1.2 model, process improvement methodology and CMMI appraisal on the basis of Standard $CMMI^{SM}$ Appraisal Method for Process Improvement($SCAMPI^{SM}$), V1.2. And, this paper shows about what kinds of activities/practices of 18 processes(CMMI Maturity Level 3) is essentially implemented to satisfy their's specific goal and general geal through Hyundai Rotem Company's experiences. This paper shows the advantage and problem by adopting CMMI V1.2 model. Especially, it present the corrective/preventive actions against the identified problem in order to improve processes.

  • PDF

A Certificate Verification Method based on the Attribute Certificates (AC기반의 인증서 검증 모델)

  • Park ChongHwa;Kim JiHong;Lee ChulSoo;Kim Dongkyoo
    • Journal of the Korea Institute of Information Security & Cryptology
    • /
    • v.14 no.6
    • /
    • pp.15-24
    • /
    • 2004
  • Electronic commerce is widely used with the development of information communication technologies in internet using public key certificates. And the study for access control in Web application and DB system is also progressed actively. There are many verification method for PKC(Public Key Certificates), which are CRL, OCSP, SCVP and others. But their certificates verification methods for PKC cannot to be applied to PMI(Privilege Management Infrastructure) which is using AC(Attribute certificates) because of synchronization of PKC and AC. It is because AC has no public key, AC Verifier must get the PKC and verify the validity on PKC and AC. So in this paper we proposed the new AC-based certificate verification model. which provide the synchronization in two certificates(AC and PKC).

Analysis of Three Years of Airmen Medical Certificate for Preparing Aviation-related Health Promotion Plan (항공종사자 건강증진활동계획에 반영되어야 할 근거자료: 3년간의 항공신체검사 결과 분석)

  • Han, Bok Soon;Kwon, Young Hwan;Shin, Yun Young
    • Korean journal of aerospace and environmental medicine
    • /
    • v.30 no.1
    • /
    • pp.40-49
    • /
    • 2020
  • In accordance with ICAO SARPs, the states should implement appropriate aviation-related health promotion for airmen subject to an aviation medical examination to reduce future medical risks to flight safety. We aimed to analyze the results of the aviation medical examination to use as objective evidence for establishing an aviationrelated health promotion plan. The results of the final issuance of airmen medical certificate from 2015~2017 were collected from the e-sky computer system. The 30 cases (0.3%) in 2015, 22 cases (0.2%) in 2016, 38 cases (0.3%) in 2017 were unfit for flight duty. The 34 unfit out of the total 90 cases were renewal physical examinations. The cardiovascular disease was most commonly in 11 cases, followed by 8 tumors, 4 psychiatric diseases, 3 ophthalmic diseases, 2 respiratory diseases, 2 neurologic diseases, 2 otolaryngological diseases, 1 endocrine disease and 1 digestive disease. The results of this study can be used as objective data in aviation-related health promotion plan. The health promotion activities based on objective data can contribute to improving aviation safety by improving the lifestyles of airmen.