• Title/Summary/Keyword: Global Protection System

Search Result 207, Processing Time 0.021 seconds

The Trade Regulation in the Multilateral Environmental Agreements on Climate Change (기후변화관련(氣候變化關聯) 국제환경협약체제하(國際環境協約體制下)의 무역규제조항(貿易規制條項))

  • Chung, Ye-Mo
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
    • /
    • v.14
    • /
    • pp.349-370
    • /
    • 2000
  • The environmental problems such as global climate change, global waming, ozone depletion, environmental pollution have been caused by the rapid economic growth, increasing in use of fossil fuels for industrialization and scientific technology development. Especially human activities are significantly altering the atomosphere's composition and its radiative properties. To Stabilize greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system, the international community adopted the UN Framework Convention on Climate Change in 1992 and Kyoto protocol in 1997. Also to protect ozone layer the international community adopted the Vienna Convention for the Protection of the Ozone Layer in 1985, and the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987. To achieve global environmental objectives, some multilateral environmental agreements includes trade regulation. For example, Montreal Protocol includes the provisions to regulate the world trade of the sudstances which might destroy ozone layer. However Kyoto Protocol has no provisions to regulate trade and is not in force yet. Although there is no trade regulation article in Kyoto Protocol, the international world trade will be influenced by limitation and reduction of CO2 and strengthening the CO2 emission standard for import good. For example Korean car industy agreed with EU to reduce CO2 emission from new passenger car and Korean Semiconductor industry agreed with WSC(World Semiconductor Council) to reduce PFCs in 1999.

  • PDF

Operating Characteristics of Protection Coordination Devices in Distribution System interconnected with Distributed Generation (분산전원이 연계된 배전계통에서 보호협조기기의 운용특성에 관한 연구)

  • Kim, So-Hee;Ji, Seong-Ho;Kim, Sun-Young;Rho, Dae-Seok
    • Journal of the Korea Convergence Society
    • /
    • v.2 no.2
    • /
    • pp.35-45
    • /
    • 2011
  • Recently, with the increasement of the interest about global warming, pollutions, and so on, a number of distributed generations(DGs) such as photovoltaic(PV) and wind power(WP), are interconnected with distribution systems. However, installing of DGs makes power flow changes such as directions, one-direction to bi-direction, and increasing/decreasing of fault current. Therefore, it may cause the critical problems. This paper proposes an evaluation algorithm for bi-directional protection coordination and presents an evaluation system for protection coordination based on this algorithm. Additionally, the result shows that the existing method may cause critical problems, and also the effectiveness of proposed method is verified.

Privacy Analysis and Comparison of Pandemic Contact Tracing Apps

  • Piao, Yanji;Cui, Dongyue
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.15 no.11
    • /
    • pp.4145-4162
    • /
    • 2021
  • During the period of epidemic prevention and control, contact tracing systems are developed in many countries, to stop or slow down the progression of COVID-19 contamination. However, the privacy issues involved in the use of contact tracing apps have also attracted people's attention. First, we divide contact tracing techniques into two types: Bluetooth Low Energy (BLE) based and Global Positioning System (GPS) based techniques. In order to clear understand the system structure and its elements, we create data flow diagram (DFD) of each types. Second, we analyze the possible privacy threats contained in various types of contact tracing apps by applying LINDDUN, which is a threat modeling technique for personal information protection. Third, we make a comparison and analysis of various contact tracing techniques from privacy point of view. These studies can facilitate improve tracing and security performance to contact tracing apps through comparisons between different types.

A Study of Environment & Bullet-Proof Capability Test Method for KLTV's Transparent Armour (한국형 전술차량 방탄유리 환경 및 방호력 시험 적용 기법 연구)

  • Park, Jinwon;Park, Youngchan;Kim, Seonjin
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.21 no.1
    • /
    • pp.69-73
    • /
    • 2018
  • Korean-peacekeeper's transparent armors in Iraq showed delamination, cracking and clouding a decade ago. And there were also similar deterioration recurrences in KLTV during the operational test a few years ago. Also, the differences between operational capability & lab Bullet-proof test condition, and insufficiency of military protection spec resulted in incomplete bullet-proof results. Moreover, although so many ground weapon systems have been developed, there were not secure test & evaluation codes to verify transparent armoured glasses equal to advanced-overseas products. So in this study, first, environmental test codes were established that all tests should be carried out as the application of only one specimen with newly adopted thermal shock test instead of completing each test with different one. Second, protection standards were integrated through the analysis of global developed country's specifications and reinforced as adding to the real mock-up condition if vehicle's glasses are smaller than standard specimen. Hereby, by applying to test-codes which including actual operational & vehicular conditions, the gap between development test and operational environment was minimized.

Power Swing Detection Using rms Current Measurements

  • Taheri, Behrooz;Razavi, Farzad
    • Journal of Electrical Engineering and Technology
    • /
    • v.13 no.5
    • /
    • pp.1831-1840
    • /
    • 2018
  • During a power swing, distance relays may mistakenly spread fault throughout the power grid, causing a great deal of damage. In some cases, such mistakes can cause global outages. For this reason, it is critical to make a distinction between power swings and faults in distance relays. In this paper, a new method is proposed based on RMS measurement to differentiate between faults and power swings. The proposed method was tested on two standard grids, demonstrating its capability in detecting a power swing and simultaneous fault with power swing. This method required no specific configurations, and was independent of grid type and zoning type of distance relays. This feature in practice allows the relay to be installed on any grid with any kind of coordination. In protective relays, the calculations applied to the microprocessor is of great importance. Distance relays are constantly calculating the current RMS values for protection purposes. This mitigates the computations in the microprocessor to detect power swings. The proposed method was able to differentiate between a fault and a power swing. Furthermore, it managed to detect faults occurring simultaneously with power swings.

Position Error Analysis of Carrier-based DGNSS Systems Under Ephemeris Fault Conditions

  • Min, Dongchan;Kim, Yunjung;Lee, Jiyun
    • Journal of Positioning, Navigation, and Timing
    • /
    • v.10 no.4
    • /
    • pp.263-269
    • /
    • 2021
  • The carrier-based differential global navigation satellite system (CD-GNSS) has been garnering significant attention as a promising technology for unmanned vehicles for its high accuracy. The CD-GNSS systems to be used for safety-critical applications should provide a certain level of integrity. The integrity of these systems must be analyzed under various conditions, including fault-free and satellite fault conditions. The systems should be able to detect the faults that can cause large biases on the user position errors and quantify the integrity risk by computing the protection level (PL) to protect the user against the faults that are left undetected. Prior work has derived and investigated the PL for the fault-free condition. In this study, the integrity of the CD-GNSS system under the fault condition is analyzed. The position errors caused by the satellite's fault are compared with the fault-free PL (PL_H0) to verify whether the integrity requirement can be met without computing the PLs for the fault conditions. The simulations are conducted by assuming the ephemeris fault, and the position errors are evaluated by changing the size of the ephemeris faults that missed detection. It was confirmed that the existing fault monitors do not guarantee that the position error under the fault condition does not exceed the PL_H0. Further, the impact of the faults on the position errors is discussed.

A Study on ISMS-P Controls for Hyper Scale Cloud (하이퍼 스케일 클라우드에 적합한 정보보호 및 개인정보보호 관리체계 인증 통제항목 연구)

  • Yong-Nyuo Shin
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.23 no.3
    • /
    • pp.19-26
    • /
    • 2023
  • Critical information infrastructure designations for cloud service providers continue to spread around the world as energy, financial services, health, telecommunications, and transportation sectors move to the cloud. In addition, in the case of Ukraine, the removal of restrictions on the use of cloud for national critical facilities and the rapid transition of critical data to the cloud enabled the country to effectively respond to cyberattacks targeting Russian infrastructure. In Korea, the ISMS-P is operated to implement a systematic and comprehensive information protection management system and to improve the level of information protection and personal information protection management in organizations. Control items considering the cloud environment have been modified and added to the audit of companies. However, due to the different technical levels of clouds between domestic and global, it is not easy to obtain information on the findings of cloud providers such as Microsoft for the training of domestic certification auditors on hyperscale scale. Therefore, this paper analyzes findings in hyperscale clouds and suggests ways to improve cloud-specific control items by considering the compatibility of hyperscale environments with ISO/IEC 27001 and SOC(System and Organization Control) security international standards.

The ISO the research also the ISMS security maturity of 27001 regarding a measurement modeling (ISO 27004 information security management measurement and metric system) (ISO 27001의 ISMS 보안성숙도 측정 모델링에 관한 연구 (ISO 27004 정보보호관리 측정 및 척도 체계))

  • Kim, Tai-Dal
    • Journal of the Korea Society of Computer and Information
    • /
    • v.12 no.6
    • /
    • pp.153-160
    • /
    • 2007
  • Recently, the demand against the system risk analysis and security management from the enterprises or the agencies which operate a information system is increasing even from domestic. The international against the standardization trend of information protection management system it investigates from the dissertation which it sees. It analyzed and against information property information protection management system integrated it will be able to manage a danger modeling it did it proposed. Having analyzed as well as compared the matureness of security-measurement models in regard to the global standard of proposal system, the administrative presentation for various IT technology resources. which have been managed singly so far, is now well applied under the united control of the company itself, and enabled the automated management of authentication support and renewal for ISO 27001, ISO 9000, ISO 14000, resulting in much advanced operation for both material and human resources.

  • PDF

Trend Analysis of North Korean Forest Science Research (1962-2016) by Data Mining (데이터 마이닝을 활용한 북한 산림과학 연구 동향 분석(1962~2016))

  • Lim, Joongbin;Kim, Kyoung-Min;Kim, Myung-Kil;Yi, Jong Min;Park, Jin Woo
    • Journal of Korean Society of Forest Science
    • /
    • v.109 no.1
    • /
    • pp.81-98
    • /
    • 2020
  • In this study, forest-related research papers published in North Korean journals were analyzed to understand the research trends in North Korean forest science. The Korea Science and Technology Information Institute (KISTI) North Korea Science and Technology Network (NKtech) is constructing a database related to science and technology in North Korea. From this, a total of 1,389 articles published from 1962 to 2016 were collected with forest science key words based on the South Korean National Science and Technology Standard Classification System. The topics were divided into four categories: afforestation, forest protection, forest use, and forest management. In the field of afforestation, research activities on nursery and agroforestry were active, and the survival rate was emphasized. In the forest protection field, there was a significant research effort into forest pests, and efforts were being made to reduce soil erosion through agroforestry. In the field of forest use, research activities on pulp/paper and mushrooms were active. In the forest management field, activities related to "ecological information" were conspicuous, and efforts were being made to reduce carbon. These results suggest that the perspective of North Korean forest research has changed from nature reorganization to nature protection. Thus, a comparative study on forest science and technology in each sub-sector of the forest research field, along with analysis of the relationship between policy direction and research direction of North Korea over time, would be worthwhile future investigations. To overcome the problem of technical terminology, a compilation/dictionary of inter-Korean forestry terminology would be useful for effective communication between the two Koreas.

Analysis on the Multi-Constellation SBAS Performance of SDCM in Korea

  • Lim, Cheol-Soon;Park, Byungwoon;So, Hyoungmin;Jang, Jaegyu;Seo, Seungwoo;Park, Junpyo;Bu, Sung-Chun;Lee, Chul-Soo
    • Journal of Positioning, Navigation, and Timing
    • /
    • v.5 no.4
    • /
    • pp.181-191
    • /
    • 2016
  • A Satellite Based Augmentation System (SBAS) provides differential correction and integrity information through geostationary satellite to users in order to reduce Global Navigation Satellite System (GNSS)-related errors such as ionospheric delay and tropospheric delay, and satellite orbit and clock errors and calculate a protection level of the calculated location. A SBAS is a system, which has been set as an international standard by the International Civilian Aviation Organization (ICAO) to be utilized for safe operation of aircrafts. Currently, the Wide Area Augmentation System (WAAS) in the USA, the European Geostationary Navigation Overlay Service (EGNOS) in Europe, MTSAT Satellite Augmentation System (MSAS) in Japan, and GPS-Aided Geo Augmented Navigation (GAGAN) are operated. The System for Differential Correction and Monitoring (SDCM) in Russia is now under construction and testing. All SBASs that are currently under operation including the WAAS in the USA provide correction and integrity information about the Global Positioning System (GPS) whereas the SDCM in Russia that started SBAS-related test services in Russia in recent years provides correction and integrity information about not only the GPS but also the GLONASS. Currently, LUCH-5A(PRN 140), LUCH-5B(PRN 125), and LUCH-5V(PRN 141) are assigned and used as geostationary satellites for the SDCM. Among them, PRN 140 satellite is now broadcasting SBAS test messages for SDCM test services. In particular, since messages broadcast by PRN 140 satellite are received in Korea as well, performance analysis on GPS/GLONASS Multi-Constellation SBAS using the SDCM can be possible. The present paper generated correction and integrity information about GPS and GLONASS using SDCM messages broadcast by the PRN 140 satellite, and performed analysis on GPS/GLONASS Multi-Constellation SBAS performance and APV-I availability by applying GPS and GLONASS observation data received from multiple reference stations, which were operated in the National Geographic Information Institute (NGII) for performance analysis on GPS/GLONASS Multi-Constellation SBAS according to user locations inside South Korea utilizing the above-calculated information.