• Communications for Statistical Applications and Methods
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• v.18 no.6
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• pp.697-705
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• 2011

This paper proposes an optimal replacement policy following the expiration of a free renewing replacement-non-renewing minimal repair warranty. To do so, the free renewing replacement-non-renewing minimal repair warranty is defined and then the maintenance model following the expiration of free renewing replacement-non-renewing minimal repair warranty from the user's point of view is studied. As the criteria to determine the optimality of the maintenance policy, we consider the expected cost rate per unit time from the user's perspective. We derive the expressions for the expected cycle length and the expected total cost to obtain the expected cost rate per unit time. Finally, the numerical examples are presented for illustrative purposes.

• Journal of Korean Society for Quality Management
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• v.10 no.1
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• pp.27-42
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• 1982

품질관리(品質管理)가 단순(單純)히 품질(品質)을 관리(管理)하는 통계적(統計的)인 수법(手法)으로서의 역할(役割)을 벗어나 경영관리(經營管理)의 새로운 시스템으로서 등장되던 1960년 전후부터 품질보증(品質保證)(quality assurance:QA)의 중요성(重要性)이 점차(漸次) 높아지게 되었다. 1959년(年)에 미국(美國)의 자동차업계(自動車業界)에서 시작(始作)된 마일에이지 보증(保證)(mileage warranty)이나, 이어서 보급된 내구소비재(耐久消費財)의 1년 보증제(保證制) 등이 QA의 발달(發達)의 계기(契機)가 되었다. 뿐만 아니라 점점 복잡화 되어가고 있는 제품(製品)에 대(對)한 안전성(安全性)이 강하게 요청(要請)되고 있다거나, 소비자(消費者)의 제품(製品)에 대(對)한 뉴스가 다양화(多樣化)되어 온것도 QA의 용요성(用要性)이 일반(一般)에게 인식(認識)되기 시작(始作)한 요인(要因)이었다고 생각한다. 이때부터 품질보증(品質保證)이라는 말이 널리 사용(使用)되어 왔다. 그러나 그 말을 사용(使用)하는 사람에 따라 뉴안스를 달리하는 경우가 많다. 즉 품질보증(品質保證)이라는 말의 해석(解釋)이 구구하다. 품질보증(品質保證)이란 무엇을 의미(意味)하는가, 그리고 품질보증(品質保證)의 방법(方法)은 어떤 것인가에 대(對)해 부족(不足)하나마 평소(平素)에 가지고 있던 생각을 여기에 정리(整理)해 볼까 한다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.987-990
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• 2007

Warranty contracting is contracting methods that European Countries have applied to asphalt pavement projects from long ago, and in America as the expected effects of the warranty contracting are being verified to introduce it, the number of projects with warranty is being increased rapidly. In Japan, the warranty contracting suitable for Japanese style was established and is being applied. This study investigated and analyzed the present state of the warranty contracting being applied to European countries, America and Japan, and suggested advantages and disadvantages in introducing the warranty contracting into Korea and directions to introduce it. The principal result of this study is that performance bond contract system, performance surety bond system and performance bidding system should be established to introduce the warranty contracting into Korea.

• International Journal of Highway Engineering
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• v.13 no.3
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• pp.65-73
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• 2011

Recently, researches to introduce the performance warranty contract are in progress for quality improvement of road pavements. The performance warranty contract is a type of contract in which contractors guarantee to maintain certain level of performance during a period from completion of construction. The contract use in Europe and the U.S is being increased because it has been known to contribute to improvement of structure quality, reduction of life cycle cost, development of construction techniques, and etc. The research on performance indicators, threshold values, and warranty durations is essential to effectively introduce the contract in Korea. In this study, literatures on the performance warranty contract for concrete pavements of the Minnesota, Indiana, and Florida of the U.S. were reviewed. Major distresses influencing the pavement performance were investigated and analyzed in the jointed concrete pavement sections of 21 Korean expressway routes to be compared to the performance indicators, threshold values, and warranty durations of the states. More accurate comparison is expected by investigation in planned sections for a long time.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.3
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• pp.123-131
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• 2012

As the price of traditional fuels soar, the alternatives are becoming more viable. And manufacturers are promoting the growing viability of electric and biofuel-powered vehicles through longer warranties. Now, these longer green environment (emission)warranties, sometimes called extended warranties or "super warranties," have been adapted. The main result of this paper is to present a new method to approximate a bivariate warranty function by using Radial Basis Function Network with application of Radon Transform and its inverse which is used to reduce the dimension of the warranty space. This method consist of the following stages: First, by using the Radon Transform, the bivariate warranty function can be reduced to one dimensional function. Second, each of the one dimensional functions is approximated by using neural network technique into neural sub-networks. Third, these neural sub-networks are combined together to form the final approximation neural network. Four, by using the inverse of radon transform to this final approximation neural network we get the approximation to the given function. Also, we apply the above method to some green warranty data of automotive vehicle company.

• Korea Trade Review
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• v.43 no.6
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• pp.25-50
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• 2018

It is an undeniable fact that the counter-guarantees are always exposed to wrongful or fraudulent demands for payment due to its institutional hallmarks and simplicity. Generally counter-guarantees are payable by presenting a written statement indicating that the local guarantor was in receipt of the beneficiary's statement that the principal was in breach of the underlying contract without any proof of any default. No proof of actual payment of guarantee is required. These matters may lead to numerous disputes or conflicts between the parties concerned. These problems raise may legal issues such as a guarantor(or a counter-guarantor)'s dishonor, the wrongful or fraudulent demands for payment, and the fraudulent conspiracy or the acquiescence of the local guarantor in the course of the procedural demand for payment. On the other hand, the guarantor's dishonor or an injunction are sometimes misused as dispute resolution method between parties involved. Therefore, this research analyzed the guarantor's wrongful dishonor and related issues such as an injunction, fraud exception, and others under the counter-guarantee regime focusing on the relevant cases. This paper also suggested practical implications and countermeasures from a business point of view.

• Asia Marketing Journal
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• v.11 no.1
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• pp.93-112
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• 2009

The purpose of this study was to analyze the effects of explicit and implicit product warranties on consumers' attitudes toward the products, and particularly, the main effects of product types and level of manufacturers' business ethics on the relationship between warranty types and consumers' attitudes. For this purpose, relevant literature was reviewed and thereupon, a survey was conducted for an empirical analysis. As a result of empirically analyzing the relationship between warranty types and consumers' attitudes and the main effects of the product types (search goods vs. experience goods) and level of business ethics (high vs. low) on the relationship, it was found that consumers' attitudes toward the products were more positive when the product warranty was explicit than when it was implicit, and that such relationship was stronger for experience goods than for search goods one. And, the relationship was stronger when the level of business ethics perceived was lower. However, such moderating effects were not significant for consumers' attitudes, but significant for their purchasing intention.

• Korean Journal of Construction Engineering and Management
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• v.7 no.6
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• pp.99-111
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• 2006

Of the numerious dispute resolution methods, Alternative Dispute Resolution(ADR) is the most highly recommended approach for the guarantee bond-related dispute. In reality, however, claims were not resolved satisfactorily through ADR because of the lack of reference materials for negotiation, thus those were frequently had to be resolved through litigation. The above fact implies that, it is required to seek an efficient way to resolve the bond-related claims prior to they progress to litigation. This research paper intensively investigated judicial precedents of 232 cases with regard to construction bond-related disputes that observed during the analysis period(2000-2004). According to the summary statistics, it turned out that litigation were time consuming and potential economic loss was tremendous; on average, it takes 1067 days(the longest case was 1965 days) for dispute resolution. It suggests that litigations should be discouraged considering the magnitude of potential loss of stake holders. Research results revealed that there are some significant differences between categories in some variables affecting to the rate of winning; i) the number of lawsuit deputies of a plaintiff (in the 1st trial), ii) dispute locations (in the 1st and 3rd trials), iii) contract price (in the 1st trial), iv) contractors' operating capability (in the 1st and 2nd trials). For the rest of variables, significance level between categories was too low for preparing efficient improvement plan. Despite the important implications drawn from the analysis, this research has limitation due to the several reasons such as data structure, the depth of Information, etc. Therefore, more systematic research should be followed in the future.

• Journal of Digital Convergence
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• v.9 no.3
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• pp.31-46
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• 2011

This research suggests for efficient operation of the e-commerce guarantee financing system in domestic industries by reviewing the definition, current situation and problems of the e-commerce guarantee financing system in operation since 2001. Throughout the 10 years of the e-commerce guarantee financing system's implementation, technological development has solved many previously concerning factors. The goal of the study is to resolve the current issues of the e-commerce guarantee financing system and offer means by which to expand the accessibility of the system to domestic industries and further assistance to firms already using the system. One of the primary policies supported by the research is the reallocation of funds from archaic means of exchanging finances to the modem e-commerce guaranteed financing methods because of the increased transparency of the trading. Specifically, the funding operated by government guarantee agencies requires systematic promotion, justifying subsidies and tax breaks to companies that are using e-commerce guarantee financing because of the increased overall transparency. In addition, the benefits of e-commerce guarantee financing as a means of funding are numerous: the promotion of good business, relaxation of credit ratings for company loans, construction of the mobile operating system for small businesses, and creation of policy flexibility in operating fund agencies run by government. Future research areas include continued collection and analysis of the above data provided and new market feedback such as direct poll surveys of the operating staff in companies using e-commerce guarantee financing agencies.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.78-84
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• 2021

Issues have arisen over the monopoly of housing sales guarantees by the Housing and Urban Guarantee Corporation. If the Ministry of Land, Infrastructure and Transport appoints an additional guarantee institution, there is concern that the property protection between the two parties is insufficient due to excessive competition and the weakening of urban regeneration resources. It argues that housing supply policies for stabilization of the housing market can be smoothly implemented through monopoly projects. This is judged to be an abuse of market dominant position under the Fair Trade Act, and excessive restrictions on pre-sale guarantee requirements may cause delays in business and infringement of property rights of members. First, the establishment of a designation system for market dominant operators of the Fair Trade Commission enables new entry of private guarantee institutions. Second, it is necessary to improve regulations under Article 63 of the Fair Trade Act (consultation on the establishment of laws restricting competition, etc.). Third, through the establishment of the 「Rules on Housing Supply」 under Article 15 (2), the Minister of Land, Infrastructure and Transport can additionally designate a guarantee institution, thereby guaranteeing the right to select a pre-sale guarantee for the business entity. In addition, it is expected that at least one of a number of guarantee insurance companies can be designated to improve the efficiency of the distribution of social benefits, thereby lowering the volatility of housing prices. Listen and suggest.