• Proceedings of the Korean Society for Quality Management Conference
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• 1998.11a
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• pp.429-434
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• 1998

QS-9000 was established by Chrysler, Ford, General Motors and some Truck Manufactures to solve problems of efforts to prepare original standards for each company. When we compare the requirements in QS-9000 with those in ISO 9000, we may observe that those of QS-9000 are more specific, since the user of the standard is limited to the automobile industry. In particular, the requirements on statistical techniques are described in more detail. In this paper, we present the requirements on statistical techniques in QS-9000. Specifically, we review the contents of QS-9000 and explore the philosophy and the minimum requirement on statistical techniques behind the description.

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.229-232
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• 2000

Orthogonal frequency division multiplexing(OFDM) has meanwhile become part of several telecommunicati ons standards, such as satellite and terrestrial digital audio broadcasting(DAB), digital terrestrial TV broad casting(DVB), asymmetric digital subscriber line(ADSL) for high-bit-rate digital subscriber services on twisted-pair channels, and broadband indoor wireless systems. In his paper, we show that OFDM signals contain sufficient structure to accomplish blind channel estimation using second order statistics only. This method doesn't require redundancy as cp in transmitter. And the result is compared with PSAM channel estimation as least square, linear minimum mean square, singular value decomposition.

• Journal of Korean Society for Atmospheric Environment
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• v.13 no.1
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• pp.41-49
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• 1997

Status of photochemical air pollution in the Greater Seoul Area (GSA) between 1990 and 1995 was assessed in terms of frequency distributions, number of days exceeding standards, average concentration and meteorological effects. In Seoul compared with other areas in Korea, daily maximum concentration was higher but average concentration was not so high due to lower daily minimum from April to October. The top 5th percentile was high especially in summer season. Average number of days exceeding 100 ppb at monitoring stations in GSA was highest in 1994, the hottest year, but it was only 4 days a year. Mean meteorological pattern of high ozone days could be summarized as low wind speeds, high temperatures, strong solar radiation, and low precipitation. Westerlies were more frequent on high ozone days and at Pangi station located in the eastside of GSA, both number of high ozone days and average concentration were high. Effect of precursor transport on the rise of ozone concentration was, however, not consistently important on the whole in GSA.

• Proceedings of the Safety Management and Science Conference
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• 2001.05a
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• pp.67-75
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• 2001

Circuitry to be connected to a Telecommunication Network consists of SELV CIRCUITS or TNV CIRCUITS. So International Standards, like as ITU-T Recommendation K.11, UL 1950, CSA C22.2 950 have been taken to reduce the risk that the Overvoltages from the power lines and from electrictraction lines, that may be received from the telecommunication network. Legal requirements may exist regarding permission to connect equipment having PTC components to a telecommunication network. Surge suppressors that bridge the insulation shall have a minimum d.c. sparkover voltage of 1.6 times the rated voltage or 1.6 times the upper voltage of the tared voltage range of the equipment. If left in place during electric strength testing of insulation, they shall not be damaged. In this work, The Conception ＆ Fail-Mode Analysis of PTC components for Over-Current Protection is proposed. It guarantees the protection for PL Claim about this Subject.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.57
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• pp.61-78
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• 2013

The purpose of this study is to clarify the standard of fair and equitable treatment. Although most international investment treaties prescribe fair and equitable treatment that is the obligation to provide fair and equitable treatment to foreign investor, there is no clear definition and specific elements of fair and equitable treatment. Through the arbitral award cases we can find that tribunals have interpreted to include six principles; Due process & Protection from denial of justice, Good faith, Reasonableness & Nondiscrimination, Compliance with contractual obligation, Full protection and security, Transparency & Protection of the investor's legitimate expectations. This study suggest that host countries and investors focus on international trends concerning investment disputes in order to avoid future disputes. So future disputes can be prevented and prepared in advance.

• Toxicological Research
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• v.17
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• pp.193-196
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• 2001

Issuance of certification and licensing for toxicologists authorized by the Japanese Society of Thxicology (JST) became effective on July 24, 1997. The certification system consists of examination, eligibility requirements for the applicants, authorization/license by the board of trustees of JST, and the re-certification of previously authorized qualification. In the last 2-3 years, about 30-40% of candidates for the examination have succeeded. The Committee has estimated that the level of the examination would be sufficient to determine qualified toxicologists. This updated status and a detailed explanation are to be presented at the workshop. In global terms, the JST special committee agrees that "harmonization of certification/registration procedure for qualified toxicologists means to ensure/set the minimum requirement for the global authorization of qualified toxicologists". The following items in global authorization are ad-dressed for further discussion: (1) What's the benefit\ulcorner (2) Toxicological safety assessment standards, and (3) the JST position for authorization.orization.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.7
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• pp.82-88
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• 2013

IEC standards do not require to limit the earthing resistance of the concrete-embedded foundation earthing electrode which is installed to a specific value. However, in Korea the value of $5{\Omega}$ and below applies to the earthing resistance for a domestic customer whose receiving voltage is 22.9kV. This paper calculates the minimum area and volume of the concrete-embedded foundation earthing electrode in order to obtain a specific value of the earthing resistance when the electrode of the building's lightning protection system and that of its power system are interconnected. It also suggested the most appropriate method of installing the foundation earthing electrode, taking the electric characteristics of concrete into account.

• Proceedings of the KSR Conference
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• 2003.10b
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• pp.516-521
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• 2003

The presentation and development of LRT(light rail transit) is one of the effective solution to reduce the heavy traffic problems of urban area The metropolitan cities and operation companies of urban transit railway are driving to. construct the LRT system because of the advantage of construction cost and environmental serviceability. Up to now, the design criteria of structures for LRT is not established. Therefore, this paper presents the structural design criteria for LRT with rubber wheels. The proposed code provides a means of establishing minimum standards for acceptance of design and construction of LRT. In order to improve the proposed design criteria, some details will be tested and evaluated in test line.

• Journal of the Korean housing association
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• v.26 no.1
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• pp.81-90
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• 2015

The purpose of this study was to investigate housing characteristics of young renter households by locations using licensed microdata of the 2012 Korea Housing Survey. There were 1,020,216 renter households (weighted count) headed by persons between 20 and 34 years of age, and their housing characteristics were compared statistically across their residential locations (Capital Region, metropolitan cities, other areas). Major findings are as follows: (1) Capital Region young renters had the worst housing quality to have the greatest proportion of households living in units failed to meet national minimum housing standards, and/or in basement or semi-basement units; (2) Capital Region young renters had the greatest proportion of households that had housing cost burdens; and (3) 37.3% of young renter households in metropolitan areas and 33.5% in Capital Region were found to receive family support in order to afford current rental costs.

• Proceedings of the Korea Concrete Institute Conference
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• 2010.05a
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• pp.453-454
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• 2010

Statical analysis for determination of LOT size was performed to make inspection standards on concrete pavement site applied correspondingly to KS Q 0001. As a result, minimum sampling frequency of strength inspection to certify the required flexural strength was analysed once for each $300m^3$ or once per day, nor less than.