• 정보보호학회논문지
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• 제21권4호
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• pp.47-60
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• 2011

모바일 디바이스(mobile device)를 통한 전자금융거래가 급속하게 증가하면서 이를 대상으로 한 공격시도도 점차 늘어나고 있다. 다양한 보안수단들이 적용되고 있지만, 모바일뱅킹(mobile banking)에 사용되는 디바이스에 원격으로 침입을 한 뒤 공격하는 방법 및 디바이스를 물리적으로 획득하여 전자금융사고를 유발할 수 있는 위험이 여전히 존재한다. 본 논문에서는 모바일 디바이스에서의 전자금융사고 예방 대책으로 개인별 입력패턴을 분석하여 본인에 의한 전자금융거래 시도인지 유무를 판단하여 선제적으로 대응할 수 있는 방안을 제안한다. 화면 터치(touch)를 통해 입력하는 모바일 디바이스의 특성상 터치 시간이나 압력 등의 패턴(pattern)은 개인별로 차이가 있으므로 이를 모니터링(monitoring) 함으로써 정상적인 모바일뱅킹 고객과 공격자를 구분할 수 있다. 본 논문에서 제시된 방안의 효용성을 증명하기 위해 모바일 디바이스에서의 개인별 입력패턴 정보를 실제 수집하여 실험하였고, 실험결과 입력패턴 정보 분석을 통해 전자금융사고를 효과적으로 예방할 수 있음을 확인하였다. 또한, 본 논문에서는 이러한 입력패턴 정보의 모니터링을 이용하여 불법적인 전자금융거래에 실시간으로 대응하는 방안도 제안한다.

• 자원환경지질
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• 제54권3호
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• pp.373-387
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• 2021

본 연구에서는 자료기반 분석 기법을 이용하여 제주 대정-한경 유역의 군집형 지하수 이용 관정의 영향력을 평가하고 지하수 자원을 효율적으로 관리하기 위한 도구를 개발하였다. 분석을 위해 대정-한경 유역 내 총 19개 지하수위 관측공의 지하수위 자료, 총 3개 기상 관측소로부터 측정된 강수량 자료, 및 총 4개의 군집형 지하수 이용 관정(저지, 금악, 서광, 및 영어교육도시)으로부터 획득한 이용량 자료가 이용되었다. 먼저, 각 지하수위 관측공에 대하여 강수량 및 이용량 자료를 입력변수로 하는 자료 기반 지하수위 예측모델을 개발하였다. 이때, 과거의 장기적 변동특성을 효과적으로 학습에 이용하기 위하여 누적 장단기 메모리 모델을 이용하였다. 모든 관측 공에 대하여 지하수위 예측모델을 개발하고, 이용량 입력변수에 대한 섭동 민감도 분석을 수행하여 각 군집형 관정의 공간적 영향력을 분석하였다. 금악 수원은 해당 수원 중심으로 영향이 크고, 서광 수원은 하류 지역을 중심으로 영향이 큰 것으로 나타났으며, 영어교육도시는 수원의 상류 지역 중심, 저지 수원은 수원 상류 및 하류 중심으로 영향이 나타났다. 그리고 유역 내 군집형 수원의 영향력은 대략 5km인 것으로 나타났다. 추가적으로, 학습된 예측모델을 기반으로 군집형 이용 관정의 영향 범위에 포함되는 지하수위 관측공에 대해 강수량 대비 배경 지하수위 회복을 위한 적정 지하수 이용량을 산정하였다. 최근의 강수 패턴을 적용하였을 때, 현재 지하수 이용량을 기존의 80%로 제한할 필요성이 있는 것으로 나타났으며, 강수량이 100mm 증가하였을 때, 대략 1,500 m³에서 1,900 m³의 추가적인 취수가 가능할 것으로 평가되었다. 본 연구를 통해 도출된 대정-한경 유역 지하수 거동특성 평가 결과와 자료기반 분석 도구들은 대정-한경 유역의 지속 가능한 지하수 개발을 위한 유용한 정보로 활용될 수 있을 것으로 판단된다.

• 한국의류학회지
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• 제24권6호
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• pp.907-917
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• 2000

Although interest in the potential and actual usage of the Internet as a transaction medium is increasing, the market for fashion merchandise on the Internet in Korea has yet to take off. As the Internet environment is expected to bring about a transformation of conventional consumer buying behavior, the purpose of this exploratory research is to investigate the buying behavior of fashion products on the Internet to identify relevant concepts and generate hypotheses for further empirical research. The research methods selected for the study were observation and in-depth interview. Twelve subjects who had purchased fashion products on the Internet were selected and interviewed. Those who could not participate in face-to-face in-depth interviews because of the geographic locations were interviewed on-line. The results are as follows: First, subjects went through the stages of shopping motivation stage, site choice behavior stage, in-site behavior stage, and postpurchase behavior stage. Second, a model was extracted for each shopping stage, and a final model was completed based on comparisons with the participants processes. The information content of each phase was discussed. Finally, each participant was classified using their purchasing process, revealing six possible mixed usage patterns of the Internet marketing system and the traditional marketing system.

• 대한기계학회논문집A
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• 제30권5호
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• pp.520-527
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• 2006

The design of major industrial facilities for the prevention of fatigue failure is customarily done by defining a set of transients and performing a calculation of cumulative usage factor. However, sometimes, the inherent conservatism or lack of details as well as unanticipated transients in old plant may cause maintenance problems. Even though several famous on-line monitoring and diagnosis systems have been developed world-widely, in this paper, a new system fur fatigue monitoring and life evaluation of crane is proposed to reduce customizing effort and purchasing cost. With regard to the system, at first, comprehensive operating transient data has been acquired at critical locations of crane. The real-time data were classified, by using adaptive resonance theory that is one of typical artificial neural network, into representative stress groups. Then the each classified stress pattern was mapped to calculated cumulative usage factor in accordance with ASME procedure. Thereby, promising results were obtained fur the crane and it is believed that the developed system can be applicable to other major facilities extensively.

• 산업경영시스템학회지
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• 제35권2호
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• pp.163-172
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• 2012

In this study, It is assumed that customers are both usage unit of spare parts and stores of displaying and selling the goods that are installation unit of having the spare parts. The demand pattern through the effective order of spare parts and issue list in installation unit is investigated based on the assumption. Current ASL (Authorized Stockage List) selection of the army has been conducted in the way of using the analysis result of real usage experiences on spare parts used during the Korea War. For this study, ASL selection criteria and procedures based on army regulations and field manuals are specified. Since the traditional method does not presents the association analysis on spare parts used for the current equipment operating and does not have the clear criterion and analysis system about the ASL selection, in order to solve these problems, it was carried out that the association rule is employed for analyzing relationship between the effective order and issue list of the spare parts in point of the spare parts between usage unit and occurring month about purchase spare parts based on the star-schema table. Finally the new ASL selection way using the analysis result is proposed.

• 한국주거학회논문집
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• 제22권4호
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• pp.33-41
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• 2011

The purpose of this study was to identify characteristics of space usage patterns by types of elderly households(single or couple). For the study, 74 elders who were older than 65 were selected and their living behaviors at their home during a day (24 hours) were analyzed. Respondents were classified into 6 types based on a combination of their household type, income level and health status. The results showed that the elderly residents tended to live a well-regulated life, however, each type had unique time and space use pattern. For example, the more the elder residents were healthy, the more they used many rooms. Frail elderly residents spent most of the day in their bedroom. Also, if they had a spouse, each one tended to use a separate private room for his or her daily life whether they shared a bedroom or not.

• 한국식품영양학회지
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• 제33권3호
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• pp.356-361
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• 2020

This study was performed to provide fundamental data on the convenience foods purchase according to the food-related lifestyle. This study was conducted on 398 Chinese international students residing in Gyeonggi area between October and December 2019. Among the total 373 survey subjects, gender was 183 male students (49.1%) and 190 female students (50.9%). This study was conducted by questionnaire method with reference to previous studies. There are significant differences in economic pursuit and taste pursuit for delivery food use, economic pursuit and taste pursuit for delivery food information, health pursuit and taste pursuit in delivery food ordering method, and economic pursuit and convenience pursuit for delivery food use (p<0.05). Delivery food usage time was significantly different in convenience pursuit, health pursuit, eating out pursuit, and taste pursuit (p<0.05), and the delivery food preference menu was significantly different in economic pursuit, health pursuit, eating out pursuit, and taste pursuit (p<0.05). The menu positive factors among satisfaction factors showed statistically significant differences in economic pursuit (β=0.188, t=3.531) and health pursuit (β=0.160, t=3.099) among food related lifestyle factors. In conclusion, this study presented the desirable direction of delivery food usage in Chinese students.

• 한국식품조리과학회지
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• 제18권2호
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• pp.136-146
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• 2002

This study was performed to find out the patterns of health food usage among the adults residing in Seoul. The majority of respondents were female (72.2%), who were 40∼49 years old (42.2%), and 53.4% had college education or over. Of the 618 respondents surveyed, more than half (56.3%) was found to take health food. The respondents responded that the most important factors for maintaining healthy body were proper eating habit (4.38 out of 5), and good rest and enough sleep (4.38). Depending on the general characteristics and the age of the subject, there were significant differences in the usage and the kind of health food, respectively Probiotic beverage was the most frequently used by the age group of 20's due to its affordable price. The most popular health food items were ginseng, herbal medicine, and animal protein. The main reasons for taking health food were to maintain health (49.7%) and to recover from the fatigue (22.6%). When selecting health food, they considered side effect, effectiveness, cleanliness, reliability of company and price. The motivation for purchasing health food came from family members and relatives (45%), subjects themselves (27%), and commercial advertisement (10%). Pharmacy and health food store were the popular places for purchasing them.

• 한국학교수학회논문집
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• 제16권4호
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• pp.797-820
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• 2013

본 논문은 초등학교 예비교사 100명을 대상으로 수학적 '문제 만들기'의 문장에 나타나는 오류를 분석하고 그에 대한 간단한 예방책을 기술한 논의이다. '문제 만들기' 문장에는 '음운 오류, 단어 오류, 문장 오류, 의미 오류, 표기 오류' 등 5가지 오류 유형이 나타났다. 이를 다시 14개의 세부 유형으로 구분하여 세부적으로 논의하였다. 곧 음운 오류의 유형은 'ㄹ'첨가 오류와 조사끼리의 준말 사용 오류가 있다. 단어 오류는 크게 '부적절한 사용 오류'와 '부당한 생략 오류'로 구분하고 이를 다시 조사, 어미, 어휘의 사용 오류와 조사와 어휘의 부당한 생략 오류로 유형화하였다. 문장 오류는 '지시 대상의 오류, 문장 성분의 생략 오류, 어순 오류, 자체 비문'의 네 가지로 유형화하였다. 의미 오류는 논리적 모순 관계 오류와 중의성을 띄는 의미 오류에 대해서만 논의하였고, 표기 오류는 띄어쓰기와 문장 부호, 철자에 관한 한글 맞춤법 오류와 외래어 표기법 오류 등에 대하여 논의하였다. 또한 14개의 문법적 세부 오류 유형을 방지하기 위한 예방책을 제시하였다. 먼저 구어와 문어의 차이를 인식하고, 둘째 글을 쓰는 문어 상황에 맞도록 구어적 표현을 지양하도록 하는 것, 셋째 국어 기본 문형 학습에 대한 강조, 넷째 단어 의미의 명확한 이해를 바탕으로 한 의미의 논리적 전개 인식을 제안하였으며, 끝으로 국어 어문 규정에 대한 학습을 제안하였다. 그리고 대학생 글쓰기 교육에 대한 필요성에 대한 재인식을 결론으로 갈음하였다.

• 복식문화연구
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• 제5권4호
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• pp.112-129
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• 1997

This research, focused on the curved of the lower body, designated abdomen and hip gradient, crotch depth and crotch width the factors for which are able to influence on the appearence and the function of Divided Skirt and analized the changes when that were applied to a real pattern, and so the purpose of this research is to show the basic documents needed to design a Divided Skirt pattern fitting with the wear purpose and usage. The following are the results of this research. 1. The abdomen and hip gradient turned out as the most influential factor on the appearance and the function of Divided Skirt. The pattern of which the abdomen and hip gradient was designated as vertical zero degree, showed an excellent appearance and in case of function, the pattern of which thw angle of the abdomen and hip gradient of human body type was applied to itself without a particular designation turned out excellent. 2. In case of crotch depth, the pattern which had crotch depth＋2㎝, had a better appearance but influced nothing on function. 3. The factor of crotch width didn\`t have any influence on the appearance and function of Divided Skirt. 4. Referring to the results of the above, the Divided Skirt pattern of which the appearance and the function turned excellent, had the angle of abdomen gradient 4 degrees, the angle abdomen gradient 4 degrees, the angle of hip gradient/2+2.5 degrees, crotch depth+2㎝ and crotch width following human body type. In case of Divied Skirt worn when going out, the pattern which had the angle of abdomen and hip gradient vertical zero degree, crotch depth+2㎝ and crotch width following human body type, turned out suitable. Also, the suitable pattern of Divided Skirt for working had the abdomen and hip gradient following human body type, crotch depth+2㎝ and covering girth diameter/2±1㎝.