• 한국멀티미디어학회논문지
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• 제19권10호
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• pp.1792-1807
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• 2016

Android application is vulnerable to reverse engineering attack. And by this, it is easy to extract significant module from source code and repackage it. To prevent this problem, dynamic class loading technique, which is able to exclude running code from distributed source code and is able to load running code dynamically during runtime can be used. Recently, this technique was adapted on variety of fields and applications like updating pre-loaded android application, preventing from repacking malicious application, etc. Despite the fact that this technique is used on variety of fields and applications, there is fundamental lack on the study of potential weakness or related secure coding. This paper would deal with potential weaknesses during the implementation of dynamic class loading technique with analysing related international/domestic standard of weaknesses and suggest a secure way for the implementation of dynamic class loading technique. Finally, we believe that this technique described here could increase the level of trust by decreasing the weakness related to dynamic class loading technique.

• 한국응용곤충학회지
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• 제13권1호
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• pp.33-39
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• 1974

통일품종이 가지는 도열병 저항성의 요인을 구명하기 위하여 수도체내에 함유하는 질소, 규산 및 Flavonoid함량을 분석하고 시비수준을 달리하여 재배한 풍광에서 이들 성분함량이 도열병 발병율에 미치는 영향을 조사하였다. 1. 수도체내 규산과 Flavonoid 함량은 질소 시비량과 반비례하고 규산 시비량과는 정비례하여 증가하였다. 2. 도열병 상습답에서의 도열병 발병율은 체내 질소함량에 정비례하고 규산함량에 반비례하였다. 3. 도열병에 대하여 저항성인 통일에서는 저항성의 요인이 되는 규산 및 Flavonoid의 체내함량이 이병성인 풍광에 비하여 현저히 높았다. 4. 규화세포의 수는 고엽일수록 많고 생육의 진전에 따라 증가하였으며 풍광에서 보다는 통일에서 현저히 높았다. 5. 이들 체내 성분의 함량은 통일이 갖는 도열병 저항성의 한 요인인 것으로 보였다.

• 한국조경학회지
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• 제23권3호
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• pp.155-166
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• 1995

The aim of this paper was to investigate images of neighborhood parks and pergola facilities. 280 individuals responded to the 19 semantic differential pollar terms for all four parks. A 7-point semantic differential scale was used. Results from the data analysis suggest several important findings; 1. Mean scores were significantly different in most of S.D.scales according to park and pergola facilities types. As compared with park, S.D.scales values of pergola varied with its visual identity in the spatial composition of park. 2. Data from the factor analysis revealed that four dimensions appeared for all park and pergola types : "Evaluation ", "Potentiality", "Variety", and "Familiarity". 3. In terms of the "Familiarity" dimension, Omok park and its pergola were viewed a ssignificantly more familiar than any of the other three areas. 4. Parks were perceived more positive than pergolas images in the dimensions of "Evaluation ", "Variety", and "Familiarity". 5. Regression analysis showed that "Evaluation "and "Variety" dimensions were mainly related to visual preference.

• Asia Marketing Journal
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• 제12권3호
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• pp.1-24
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• 2010

본 연구는 혁신적인 모바일 서비스의 사용-확산 관점에서 혁신적인 서비스의 사용량과 사용의 다양성에 사회적 영향력이 어떠한 역할을 하는지 살펴보았다. 본 논문의 연구모형에 포함된 사회적 영향요인은 크게 두 가지인데 이는 네트워크 요인과 상표 동일시이다. 여기서 네트워크 요인은 사회적인 규범과 네트워크 효과를 포괄하는 개념이며, 상표 동일시는 소비자 개인의 자아정체성과 서비스 브랜드와의 일치성을 의미한다. 먼저 네트워크 요인의 경우 모바일 서비스의 사용량에 유의한 영향을 미치는 것으로 확인되었으며, 지속사용의도에도 긍정적인 영향을 미치는 것으로 나타났는데, 서비스 사용의 다양성에는 별 영향을 주지 않는 것으로 나타났다. 상표 동일시의 경우에는 사용량과 사용의 다양성에 모두 유의한 영향을 미치며 지속사용의도에도 긍정적인 효과를 가지는 것으로 나타났다. 본 연구에서 사용한 충성도 지표는 두 가지인데 하나는 모바일 서비스의 지속사용의도이고 또 하나는 상표애호도 즉 상표 전환의도이다. 이 두 가지 변수 중 전자는 서비스 카테고리에 대한 충성도이고 후자는 상표에 대한 충성도인데 서로 다른 의미를 갖는 만큼 연구 결과도 다르게 나왔다. 즉, 모바일 서비스의 사용량과 사용의 다양성은 모두 지속사용의도에 긍정적인 영향을 미쳤으나, 상표 전환의도에의 경우에는 사용량만이 유의한 영향을 주었고 가설과 반대로 사용량이 높을수록 오히려 상표 전환의도가 높아지는 것으로 나타났다. 이는 특정 혁신 서비스를 사용해 본 얼리어답터 고객들이 다양한 사업자의 서비스를 이용해 보고자 하는 니즈가 있음을 보여 준 것으로 이해할 수 있다.

• 한국식생활문화학회지
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• 제38권5호
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• pp.304-313
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• 2023

This study was a qualitative investigation into the food security and food variety among the rural elderly. For the qualitative data collection, nineteen elderly people who lived in Yangpyeong-gun were interviewed individually. Food security and variety was evaluated based on accessibility and affordability. The participants seemed to have difficulty preparing their own meals and eating with their families or others. The frequency of vegetable intake was found to be high, as vegetables were available through cultivation. However, in terms of diversity, the intake of meat and milk, which are sources of protein and calcium, was found to be significantly low. This has to do with very poor physical accessibility. A lack of nutrition education was identified as the biggest reason for not following dietary therapy despite having a pre-existing disease condition. Therefore, for the elderly in Yangpyeong-gun, it is suggested that a basic nutrition policy for food supply that can increase their actual intake is more essential than education on cooking and nutrients. Moreover, periodic nutrition education or a regular counseling system for dietary therapy through local public health centers may help improve the health of the elderly.

• Kyungpook Mathematical Journal
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• 제43권4호
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• pp.605-616
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• 2003

In this paper, some rank equalities related to generalized inverses $A^{(2)}_{T,S}$ of a matrix are presented. As applications, a variety of rank equalities related to the M-P inverse, the Drazin inverse, the group inverse, the weighted M-P inverse, the Bott-Duffin inverse and the generalized Bott-Duffin inverse are established.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.229-232
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• 2005

This paper presents a preliminary analysis result on SAR-related journal papers published since 1960s. Abstracts of more than 2700 peer-reviewed English journal papers were collected and classified into various categories according to their systems, techniques, and application fields. Statistics on each category were provided so that one can understand historical and on-going development in SAR systems, techniques, and a variety of application fields such as land, ocean, cryosphere and atmosphere. This statistical data would be an essential guideline to establish a future SAR system application and satellite manoeuvring policy.

• International Journal of Safety
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• 제6권2호
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• pp.13-16
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• 2007

This study focuses on the trends and issues of improving safety management of elevators in Korea. Frequency and severity of accidents in relation to conditional pass in periodic inspection, maintenance, market surveillance are analyzed based on the statistical data and social cost due to a variety of related fields in managing elevator safety was estimated first. The results of statistical analysis performed in this study will provide logical basis and future direction for improving the safety management system. The role of certification and supervision is particularly addressed to reduce the related accidents and the social cost. The effectiveness of such procedures can be found from the results of simple statistical analysis.

• 지역사회간호학회지
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• 제18권1호
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• pp.136-145
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• 2007

Purpose: This study was attempted to illuminate danger signals through an extensive analysis of factors influencing adolescents' illicit drug use. On this basis, it built predictive factors of adolescents' illicit drug use. Method: A questionnaire was distributed to 1,238 subjects living in Seoul, and of them 1,082 answers were analyzed using the SAS 8.2 program. Also logistic regression analysis was conducted based on the stepwise selection method for constructing the predictive factors. Results: The findings of this study are as follows. Individual-related factors were psycho-somatic symptoms, self-esteem, fortune delinquent experience, and sexual-violence delinquent experience. Home-related factors were insincerity, threatening and the assessment of the parent (rearer)-adolescent communication type. Society-related factors were affection of friends and friends' attitude toward delinquency. Conclusion: These findings of this study suggest that a broad intervention program should be provided to nurture wholesome youth culture related to illicit drug use. It is also recommended that a variety of individual, home and society-related programs should be developed for drug users.

• 셀메드
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• 제2권1호
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• pp.2.1-2.11
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• 2012

Tea polyphenols especially catechins have long been studied for their antioxidant and radical scavenging properties. Scientists throughout the world have investigated the usefulness of the regular green tea consumption in several disease conditions. In-vitro and in-vivo experiments on catechins especially epigallocatechingallate have revealed a significant role in many ways. Reactive oxygen species have been increasingly implicated in the pathogenesis of many diseases and important biological processes. Toxic effects of these oxidants, commonly referred to as oxidative stress, can cause cellular damage by oxidizing nucleic acids, proteins, and membrane lipids. Oxidative stress has been related to aging and age related disorders. It is found that in a wide variety of pathological processes, including cancer, atherosclerosis, neurological degeneration, Alzheimer's disease, ageing and autoimmune disorders, oxidative stress has its implications. Catechins have been reported to be useful in combating aging and age related disorders like cancer, cardiovascular disorders and neurodegenerative diseases. In this mini review we will discuss such studies done across the globe.