• The Korean Journal of Financial Management
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• v.25 no.1
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• pp.85-108
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• 2008

In this paper, the fBm interest rate theory is investigated by using Wick integral. The well-known Affine, Quadratic and HJM are derived from fBm framework, respectively. We obtain new theoretical results, and zero coupon bond pricing formula from newly obtained probability measure.

• Environmental and Resource Economics Review
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• v.9 no.5
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• pp.877-901
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• 2000

이전 가능한 환경오염으로부터의 피해자가 오염으로 인해 발생하는 피해를 줄이기 위한 방안으로 자기보호조치(self-protective measure)를 제공할 수 있다. 이 때 피해자들이 서로 비협조적으로 행동할 경우 피해자들의 자기보호조치 제공은 환경오염으로 인해 발생하는 시장실패 이외에 피해자들이 자기보호조치를 적정량 이상으로 제공함으로써 추가적인 시장실패를 발생시키게 된다. 이러한 경우에 사회최적 상태에 도달할 수 있도록 하는 최선의 정책은 환경오염을 발생시킨 측과 자기보호조치를 과다하게 제공하는 피해자 모두에게 피구비안(Pigouvian) 세금을 부과하는 것이다. 만약 오염자가 방출되는 오염물의 양을 줄이기 위해 예방조치(preventive measure)를 취함에 있어서 그 죄가 피해자에게 주는 실질 효력이 불확실할 때 피해자의 반응은 자기보호조치의 예방조치에 대한 한계생산곡선의 모양에 좌우된다. 또한 자기보호조치의 제공과 예방조치의 효력에 대한 위험성간의 관계는 피해자의 생산함수 형태에 좌우된다.

• The Korean Journal of Applied Statistics
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• v.6 no.2
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• pp.217-226
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• 1993

이 논문은 크게 두 부분으로 구성되었는데, 첫째 부분은 의학연구 목적에 따라 요구되는 분석법을 소개하고 있고, 둘째 부분은 국내 의학논문에서 통계처리의 잘못의 유형과 빈도를 제시하고 있습니다. 첫째 부분인 여러 분석법의 소개에서는 분석법의 열거로 보아서는 통계인들에게 새로운 것이 많지 않다고 언뜻 느껴지시겠지만, 실제로는 여러 면에서 새로운 점이 많습니다. 이 차이점을 살펴보면 우선 rate와 proportion과 ratio란 용어를 구분하여 사용하고 있고, 이들의 사용이 요구되는 의학적인 경우도 분명히 다름을 의학연구의 예제와 연구목적에 따라 제시하였습니다. 교과서처럼 쓸 수 있어서 설명이 부족합니다만, 의학에서 요구되는 구체적인 상황은 매우 다릅니다. 여러 가지 연구의 하나인 원인성연구를 살펴보면 measure of association으로써 rate difference (RD), rate ratio (PR)과 odds ratio (OR)의 세가지가 제시되었고, 이 measure에 대해서도 각각이 요구되는 의학적인 경우가 분명히 다르며, 또한 각각에 따른 분석기법도 다름을 논문에서 볼 수 있습니다.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.175-176
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• 2013

일본 오사카 센난 지역에 위치한 이즈미사노시(泉佐野) 재정위기는 1994년 간사이국제공항을 건설하면서 시작하였다. 공항 개항에 맞추어 시립 이즈미사노시 병원 등 대규모 개발사업 추진 중 이용자 감소와 심각한 경기 침체로 세수가 늘지 않고 재정이 악화되자 위기를 맞게 되었다. 본 논문은 일본 오사카부 이즈미사노(泉佐野) 시 지방재정 위기 극복사례 중심으로 시사점을 제시하고자 한다.

• Journal of the Korea Convergence Society
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• v.10 no.9
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• pp.11-16
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• 2019

People are subject to time sanctions in a busy modern society. Therefore, people find it difficult to eat simple junk food and even exercise, which is bad for their health. As a result, the incidence of chronic diseases is increasing. Also, the importance of making accurate and appropriate inferences to individual characteristics is growing due to unnecessary information overload phenomenon. In this paper, we propose a knowledge reasoning model using association rules and cluster analysis of multi-contexts. The proposed method provides a personalized healthcare to users by generating association rules based on the clusters based on multi-context information. This can reduce the incidence of each disease by inferring the risk for each disease. In addition, the model proposed by the performance assessment shows that the F-measure value is 0.027 higher than the comparison model, and is highly regarded than the comparison model.

• Journal of The Korean Association For Science Education
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• v.30 no.7
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• pp.901-907
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• 2010

The purpose of this study is to analyze methods for measuring the size of the Earth, put forth in 6 different Korean 8th grade science textbooks. The research questions are as follows: 1) Do they adequately map out the experiments for measuring the size of the earth by using the concept of the sun's altitude? 2) Do they reduce the size of the sun like as the Earth is similarly downsized to the globe? 3) Do they suggest the precise experimental conditions for selecting two equal longitudinal spots for measuring the size of the earth? 4) Do they design adequate experiments for exact measurement? 5) Do they offer a proportional expression for seeking the size of globe which is easily understood by students? 6) Do they develop experiments to measure actual size of the earth? Four graduate students and one researcher took part in this study. All conditions were unanimously agreed upon by the participants. The results are as follows. First, one publishing company must include the concept of the sun's altitude to accurately measure the size of the Earth. However, some textbooks fail to mention this. As such, the concept of the sun's altitude must be introduced to accurately measure the size of the Earth. Second, a reduced size globe is used as the actual earth so; the sun should be factored in with a reduced light value. Third, you have to lay a stress on two points at the same longitude. In other words, a shadow located at the same longitude from two randomly selected points. Most textbooks mention two points at the same longitude but two of them design the experiment with a shadow at the same longitude. Fourth, we need a method to precisely measure the angle between a stick and its shadow. The angle between the stick and the tip of its shadow is the sun's altitude difference. Fifth, we need to present more specific proportional expressions for calculating the size of the globe. Only 3 out of the 6 texts employed a proportional expression. Sixth, we need to calculate the size of the earth by accurately presenting the scale of the globe to attain the goal of the experiment. Two of the texts analyzed, designed the experiment for the purpose of calculating the size of the globe. Three of the texts designed their experiments to calculate the radius of globe which is not even relevant to the purpose of experiment.

• Journal of The Korean Association of Information Education
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• v.20 no.3
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• pp.293-302
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• 2016

It is the latest fashion of interesting with software education in public school environment and also consider as high priority issue of curriculum for college freshman with programming 101 courses. The block-based programming tool is used widely for the beginner and provides several positive features compare than text-based programming language tools. To measure quality of programming code elaborately which is based script language, it is need to very tough manual process. As a result the previously research related with evaluation of block-based script code has been focused very simple methods in which normalize the number of blocks used which is related with programming concept. In such cases in this, it is difficult to measure structural vulnerability of script code and implicit programming concept which does not expose. In this research, the framework is proposed which enable to measure and evaluate quality of code script of block-based programming tools and also provides method to find of vulnerability of script code. In this framework, the quality metrics is constructed to structuralize implicit programming concept and then developed the quality measure and vulnerability model of script to improve level of programming. Consequently, the proposed methods enable to check of level of programming and predict the heuristic target level.

• Journal of Korea Water Resources Association
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• v.41 no.11
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• pp.1135-1142
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• 2008

Collapse of the levee surrounding structure(culvert) accounts for l0 % of collapse factors of the river levees. In particular, in 2002, the levee collapse that happened at "Nakdong River" at flood usually happened around culverts. This levee collapse has mechanism that the cavity expands with internal erosion at flood after the pore and cavity are formed between culvert and levee copula which are heterogeneity material. The study regarding the cavity or flowing detection around a culvert for safety management of a river levee is in the proceeding. In this study, the characteristic of two sensors could be figured out through an experiment about displacement measure of Flex sensor and FBG sensor and the decision of more suitable sensor was possible for safety supervision of river levee. According to an experiment result, several characteristics of FBG sensor could be known in consistency of the measure data and minute displacement measure part regarding displacement measure and this characteristic may supplement a shortcoming of Flex sensor at this time.

• Journal of Korea Entertainment Industry Association
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• v.13 no.5
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• pp.239-246
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• 2019

This study aims to examine the correlation between pectoralis minor, shoulder mobility, and neck range of motion on rounded shoulder posture for Life-care increase in Women university student. The 80 female adults with rounded shoulder posture were selected for this study. Measurements of shoulder height were obtained by measuring the rounded shoulder posture using a caliper. To measure the length of pectoralis minor, a tape measure was used to measure from the point where the 4th rib and sternum meets to the inferior medial side of coracoid process. Shoulder mobility was measured by holding fists in both hands, then raising one side of the elbow until the palm on that side can be placed on the back, while lowering the other side of the elbow until the back of the hand on that side can be placed on the back. Neck range of motion was used to measure the neck movement including the flexion and the extension, lateral flexion to the right or to the left, and rotation to the right or to the left. The results of this study showed that there are significant negative correlations between pectoralis minor index, shoulder mobility, and neck range of motion in rounded shoulder posture(p<0.05). From these results, in female students with rounded shoulder, the lateral flexion of the neck to the left decreased as the left shoulder mobility increased, the neck extension decreased as the right pectoralis minor shortened, and the rotation of the neck to the left decreased as the left shoulder mobility increased.

• The KIPS Transactions:PartD
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• v.17D no.1
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• pp.1-8
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• 2010

Association rule mining techniques enable us to acquire knowledge concerning sales patterns among individual items from voluminous transactional data. Certainly, one of the major purposes of association rule mining is utilizing the acquired knowledge to provide marketing strategies such as catalogue design, cross-selling and shop allocation. However, this requires too much time and high cost to only extract the actionable and profitable knowledge from tremendous numbers of discovered patterns. In currently available literature, a number of interest measures have been devised to accelerate and systematize the process of pattern evaluation. Unfortunately, most of such measures, including support and confidence, are prone to yielding impractical results because they are calculated only from the sales frequencies of items. For instance, traditional measures cannot differentiate between the purchases in a small basket and those in a large shopping cart. Therefore, some adjustment should be made to the size of market baskets because there is a strong possibility that mutually irrelevant items could appear together in a large shopping cart. Contrary to the previous approaches, we attempted to consider market basket's size in calculating interest measures. Because the devised measure assigns different weights to individual purchases according to their basket sizes, we expect that the measure can minimize distortion of results caused by accidental patterns. Additionally, we performed intensive computer simulations under various environments, and we performed real case analyses to analyze the correctness and consistency of the devised measure.