• Journal of Korean Society for Quality Management
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• v.28 no.1
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• pp.57-77
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• 2000

A two-dimensional warranty policy, two types of warranty criteria, such as the age and mileage of an automobile, are employed simultaneously to determine the eligibility of a warranty claim. We deal with the analysis of a variety of combined two-dimensional free replacement warranty(FRW) and pro-rata replacement warranty(PRW). In this paper we also propose the analysis of policies with item failures modelled using the one-dimensional and two-dimensional approach, respectively. We obtain expressions for the expected warranty costs and illustrate through numerical examples.

• Journal of the Korean Mathematical Society
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• v.49 no.3
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• pp.449-473
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• 2012

In the present paper, we study the relationship between continuous order-representability and the fulfillment of the usual covering properties on topological spaces. We also consider the case of some algebraic structures providing an application of our results to the social choice theory context.

• Journal of information and communication convergence engineering
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• v.7 no.1
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• pp.30-34
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• 2009

The encryption method is a well established technology for protecting sensitive data. However, once encrypted, the data can no longer be easily queried. The performance of the database depends on how to encrypt the sensitive data. In this paper we review the conventional encryption method which can be partially queried and propose the encryption method for numerical data which can be effectively queried. The proposed system includes the design of the service scenario, and metadata.

• Journal of the korean veterinary medical association
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• v.16 no.2
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• pp.79-88
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• 1980

Ovine squamous cell carcinoma(OSCC) is a naturally occurring malignant tumour, being considered due to solar radiation. The literature on OSCC is reviewed, pertaining to the following five aspects of the disease; aetiology, tumour development, geographica

• Ocean Science Journal
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• v.41 no.2
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• pp.59-73
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• 2006

This paper presents new data on free-living heterotrophic euglenids (Euglenozoa, Protista) that occurred in the marine sediments at Cape Tribulation, Queensland, Australia. Twenty-nine species from 9 genera are described with uninterpreted records based on light microscopy, including one new taxon: Notosolenus capetribulationi n. sp. There was little evidence for endemism because the majority of heterotrophic euglenid species encountered here have been reported or were found from other habitats.

• Journal of applied mathematics & informatics
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• v.22 no.1_2
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• pp.317-329
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• 2006

In this paper, a singularly perturbed ordinary differential equation with non-smooth data is considered. The numerical method is generated by means of a Petrov-Galerkin finite element method with the piecewise-exponential test function and the piecewise-linear trial function. At the discontinuous point of the coefficient, a special technique is used. The method is shown to be first-order accurate and singular perturbation parameter uniform convergence. Finally, numerical results are presented, which are in agreement with theoretical results.

• Proceedings of the KWS Conference
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• 2002.05a
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• pp.71-73
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• 2002

• Journal of Chest Surgery
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• v.45 no.4
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• pp.213-224
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• 2012

Tetralogy of Fallot (TOF) is an index lesion for all paediatric and congenital heart surgeons. In designing an appropriate operation for children with TOF, the predicted postoperative physiology must be taken into account, both for the short and long term. A favourable balance between pulmonary stenosis (PS) and pulmonary insufficiency (PI) may be critical for preservation of biventricular function. A unified repair strategy to limit both residual PS and PI is presented, along with supportive experimental evidence. A strategy for dealing with coronary anomalies and some comments regarding best timing of operation are also included.

• ICROS
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• v.17 no.2
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• pp.19-26
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• 2011

무인화 로봇 연구는 정해진 환경에서 빠른 속도로 반복적인 작업을 수행하기 위한 산업용 로봇을 이용하는 무인화 공장 등으로 발전되었다. 최근에는 정해진 환경에서 작업을 수행하는 것이 아닌 사람이 생활하는 공간에서 사람 대신 작업을 수행하는 무인화 로봇 시스템 연구가 증가하고 있다. 청소 로봇은 이미 많은 가정에 보급되었으며, 홈 로봇이나 안내 로봇에 대한 연구도 진행되고 있다. 또한 전쟁 지역이나 심해, 방사는 누출 지역 등 재난 지역에 사람 대신 투입되어 인명 구조나 탐사, 시설 복구 등의 역할을 수행하기도 한다.

• The Microorganisms and Industry
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• v.15 no.1
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• pp.29-34
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• 1989

It is our common understanding that biological materials like microorganisms, tissue and cell cultures, seeds, plants and animals are inevitable resources for the development of science and technology. Culture collections which are reservior of biological materials now occupy a central position in life sciences and biotechnology. The World Data Center of Microorganisms (WDC) is a infrastructure of culture collections in the world realizing quick and smooth exchanges of information and microorganisms to support research and development in those fields. The WDC was relocated from University of Queensland in Australia to out institute RIKEN in 1986. This article introduces a function for WDC in RIKEN (RIKAGAKU-KENKYUUSHO, the Institute of Physical and Chemical Research)