• 정보보호학회논문지
• /
• 제29권3호
• /
• pp.519-529
• /
• 2019

지능화된 안드로이드 악성코드는 안티바이러스가 탐지하기 어렵도록 악성행위를 숨기기 위하여 다양한 분석 회피 기법을 적용하고 있다. 악성코드는 악성행위를 숨기기 위하여 백그라운드에서 동작하는 컴포넌트를 주로 활용하고, 자동화된 스크립트로 악성 앱을 실행할 수 없도록 activity-alias 기능으로 실행을 방해하고, 악성행위가 발견되는 것을 막기 위해 logcat의 로그를 삭제하는 등 지능화되어간다. 악성코드의 숨겨진 컴포넌트는 기존 정적 분석 도구로 추출하기 어려우며, 기존 동적 분석을 통한 연구는 컴포넌트를 일부만 실행하기 때문에 분석 결과를 충분히 제공하지 못한다는 문제점을 지닌다. 본 논문에서는 이러한 지능화된 악성코드의 동적 분석 성공률을 증가시키기 위한 시스템을 설계하고 구현하였다. 제안하는 분석 시스템은 악성코드에서 숨겨진 컴포넌트를 추출하고, 서비스와 같은 백그라운드 컴포넌트인 실행시키며, 앱의 모든 인텐트 이벤트를 브로드캐스트한다. 또한, 분석 시스템의 로그를 앱이 삭제할 수 없도록 logcat을 수정하고 이를 이용한 로깅 시스템을 구현하였다. 실험 결과 본 논문에서 제안한 시스템을 기존의 컨테이너 기반 동적 분석 플랫폼과 비교하였을 때, 악성코드 구동률이 70.9%에서 89.6%로 향상된 기능을 보였다.

• Structural Engineering and Mechanics
• /
• 제69권3호
• /
• pp.257-268
• /
• 2019

Infills are as important members in structural design as beams, columns and braces. They have significant effect on structural behavior. Because of lots of variables in infills like material non-linear behavior, the interaction between frames and infill, etc., the infills performance during an earthquake is complicated, so have led designers do not consider the effect of infills in designing the structure. However, the experimental studies revealed that the infills have the remarkable effect on structure behavior. As if these effects ignored, it might occur soft-story phenomena, torsion or short-column effects on the structures. One simple and appropriate method for considering the infills effects in analyzing, is replacing the infills with diagonal compression strut with the same performance of real infill, instead of designing the whole infill. Because of too many uncertainties, codes and researchers gave many expressions that were not as the same as the others. The major intent of this paper is calculation the width of this diagonal strut, which has the most characteristics of infill. This paper by comprehensive on different parameters like the modulus of young or moment of inertia of columns presents a new formula for achieving the equivalent strut width. In fact, this new formula is extracted from about 60 FEM analyses models. It can be said that this formula is very efficient and accurate in estimating the equivalent strut width, considering the large number of effective parameters relative to similar relationships provided by other researchers. In most cases, the results are so close to the values obtained by the FEM. In this formula, the effect of out of plane buckling is neglected and this formula is used just in steel structures. Also, the thickness of infill panel, and the lateral force applied to frame are constant. In addition, this new formula is just for modeling the lateral stiffness. Obtaining the nearest response in analyzing is important to the designers, so this new formula can help them to reach more accurate response among a lot of experimental equations proposed by researchers.

• 여성건강간호학회지
• /
• 제25권3호
• /
• pp.285-298
• /
• 2019

Purpose: The purpose of this study was to identify the impacts of human papillomavirus (HPV) vaccination-related health belief, attitudes toward HPV vaccination, and subjective norms on HPV vaccination intent targeting mothers of elementary school daughters. Methods: The study use a correlative survey design. The subjects of the study were 121 mothers of elementary school daughters located in metropolitan city B. All subjects agreed to participate in the study. The data were collected from September 1 to October 18, 2018, and were analyzed using descriptive statistics, Independent t-test, ANOVA with a post hoc $Scheff{\acute{e}}$ test, Pearson's correlation coefficients, and stepwise multiple regression. Results: Attitude toward HPV vaccination, subjective norms, vaccination plans for their children, and mother's vaccination status were significant factors influencing HPV vaccination intention. These factors accounted for 72% of the HPV vaccination intention. Conclusions: This study showed that factors affecting the intention of mothers of elementary school daughters to vaccinate against HPV were HPV vaccination attitudes, subjective norms, vaccination plans for their children, and mother's vaccination status. The biggest influencing factor was HPV vaccination attitudes. Therefore, in order to encourage mothers of elementary school daughters to vaccinate against HPVs, national-level policies should be implemented to create a social atmosphere of positive attitudes toward HPV vaccinations that also emphasizes how easy it is to get vaccinated against HPV. Based on this, mothers of elementary school daughters should be encouraged to have them vaccinated against HPV, thus contributing to improving the HPV vaccination rates of elementary school girls.

• 아태비즈니스연구
• /
• 제12권1호
• /
• pp.41-56
• /
• 2021

Purpose - This empirical study examined the influence of post-communist countries sociol-political factor of freedom of expression preconditioning, and trust in agency, mediating performance expectancy of social media users representing the citizens' behavioural intention to utilize social media in a post-communist country, the case of Mongolia. Design/methodology/approach - This research collected 403 valid survey data from citizens those who use social media in Mongolia. The study used Partial Least Squire (PLS) analysis with the research conceptual model founded on the UTAUT model. Findings - The study shown that citizens in post-communist, they strongly willing freedom of expression, which driving as a positive precondition factor, and this has an indirect positive influence, and trust in agency mediates to enhance performance expectancy. Social influence, and effort expectancy factors have direct positive influence on the intention to use of social media systems in the public sector domain of Mongolia. Research implications or Originality - This research proposed a new model to test citizens' intention to use social media as a communication tool to engage with public organizations in the pre-adoption stage of post-communist countries. Theoretically, this research builds up to the unique theoretical contribution with social media by examining a new social media-based third-party intercommunication medium, incorporating intent to utilize for citizens with government in post-communist countries. Practically, this article lays out the directions to aid social media usage for government sector with concerning citizens intentions in the post-communist situation.

• 한국프랜차이즈경영연구
• /
• 제10권2호
• /
• pp.19-32
• /
• 2019

Purpose - This paper aims to investigate the mediating effects of relationship fairness factors between franchisor's support services and performance(re-contract intention) in food service franchise. More specifically, fairness was measured into distributive, procedure, interaction, and information, franchisor's support service was divided into pre-start support services (initial support services) and post-start support services (continued support services), and performance (re-contract intent) was measured using 3 items such as re-contract, contract extension, and recommendation. Research design, data, and methodology - The population for the survey is the head of franchises in the metropolitan area (Seoul/Gyeonggi), which operates a restaurant franchise, and samples included a wide range of overseas/domestic brands and regions. The survey was conducted from August 1 to September 30, 2018 through the survey agency. The survey was conducted together with a telephone interview and a direct visit by the investigator. A total of 205 questionnaires were collected and retrieved, 4 questionaires containing missing information were excluded and 201 responses were used for analysis. Results - The results shows that franchisor's initial support services have significant positive effects on procedural, interpersonal, and informational relationship fairness, and continuous support services have significant positive effects on distributive, procedural, interpersonal, and informational relationship fairness. This study also shows that informational and procedural fairness have significant positive effects on performance(re-contract intention). Finally, continuous services a significant positive effect on performance(re-contract intention). Conclusions - The results show that franchisor make a manual, and should improve fairness through regular investigation whether support services was executed as promised in the manual after franchisee operation. In addition, information fairness and procedural fairness have been shown to increase performance(re-contract intention). These results mean that the franchisor's headquarters should provide product and service support for the merchant in accordance with the manual and management policy to reduce asymmetry in information and improve procedural fairness to enhance performance(re-contract intention).

• 융합정보논문지
• /
• 제10권12호
• /
• pp.9-14
• /
• 2020

현재 NTIS(National Technology Information Service)는 인공지능 기술을 기반으로 대화형 검색 서비스를 구축하고 있다. 이용자의 검색 의도를 파악하고 과제정보를 제공하기 위해 딥러닝 모델과 형태소 분석기를 기반으로 대화형 검색 서비스를 구축한다. 딥러닝 모델은 NTIS와 대화형 검색 서비스를 활용할 때 적재되는 로그 데이터를 기반으로 학습을 진행하고 이용자의 검색 의도를 파악한다. 그리고 단계별 검색을 통해 과제정보를 제공한다. 검색 의도 파악은 예외처리를 용이하게 해주며 단계별 검색은 통합검색보다 쉽고 빠르게 원하는 정보를 얻을 수 있도록 한다. 향후연구로는 인공지능 기술이 접목된 성장형 대화형 검색 서비스로써 이용자에게 제공하는 정보의 범위를 확대해야 한다.

• 아태비즈니스연구
• /
• 제11권2호
• /
• pp.61-79
• /
• 2020

Purpose - This article empirically investigated the effects of the socio-political factor of censorship preconditioning, and organizational support, mediating performance expectancy of public sector officials' behavioural intention to utilise social media in a post-communist country, Mongolia. Design/methodology/approach - This study collected 212 survey data from public sector organisations in Mongolia. Using the Partial Least Squire (PLS) method, this study analyzed the proposal model grounded on the UTAUT model. Findings - There are still communist footprints in the form of censorship, which remained as a negative precondition factor, and this has an indirect negative influence, and organisational support mediates to enhance performance expectancy. Effort expectancy and social influence factors have direct positive influence on the use of social media systems in the government domain of Mongolia Research implications or Originality - This study empirically investigated the model of public employees' intention to examine the post-communist countries' cultural, social, economic, and political systems, government organisational environment of the former communist sphere. The cultural factors, censorship and organisational support, to the existing IT adoption UTAUT model were also identified to test the situation of a post-communist country, Mongolia. This study contributes to the new theoretical involvement with social media by testing a new social media-based third-party intercommunication channel, including intent to use in the public service for post-communist countries. This study practically provides the guidelines to promote social media usage for public sector in the post-communist situation.

• 아태비즈니스연구
• /
• 제12권2호
• /
• pp.145-159
• /
• 2021

Purpose - The purpose of this study is to identify the preceding factors that form pro-social tourism behavior intent in a pendemic situation and to present theoretical and practical implications for the role of individuals for a safe tourism environment. Design/methodology/approach - This study conducted an analysis by collecting 420 valid questionnaires targeting citizens who have lived in Korea continuously for more than one year. For the analysis, a confirmatory factor analysis (CFA) and a structural equation model (SEM) were used, and a multi-group confirmatory factor analysis (MCFA) and a multi-group structural equation model (MSEM) were used to verify the difference by age group. Findings - First, cognitive and affective risk perception for Covid-19 had a significant (+) effect on the ascription of responsibility to tourists, and affective risk perception and ascription of responsibility had a significant (+) effect on personal norms. Second, personal norms have been shown to have a significant (+) influence on prosocial tourism behavior intention, and prosocial tourism behavior intention has a significant (+) influence on WTP on safety tourism. Research implications or Originality - Tourism behavior in a pendemic situation can affect the spread of infection. In this respect, this study attempted to confirm how moral norms affect pro-social tourism behavior from a personal point of view. In addition, we tried to present practical implications by identifying the impact of personal norms on willing to pay for a safe tourism environment.

• 한국간호교육학회지
• /
• 제29권3호
• /
• pp.225-233
• /
• 2023

Purpose: The aim of this study was to identify factors related to the vaccination intentions of nursing students before clinical practice. Methods: A descriptive correlational study design was used. The participants were 129 nursing students who were enrolled in one college of nursing in Seoul and were scheduled for clinical training. Data collection was conducted from February 28 to March 7, 2022. The data were analyzed using descriptive statistics, a t-test, ANOVA, Pearson's correlation coefficient, and a latitudinal regression analysis using the IBM SPSS statistics version 26.0 program. Results: The intention to vaccinate showed a significant correlation with vaccination attitude (r=.72, p<.001), subjective norms (r=.68, p<.001), and perceived behavioral control (r=.63, p<.001). The influencing factors on three intent to vaccinate were vaccination attitude (β=.36 p<.001), subjective norms (β=.31, p<.001), and perceived behavioral control (β=.36, p<.001). The explanatory power of these variables was 69.6%. Conclusion: The vaccination rate before the clinical training of nursing students was related to economic burden, a lack of time, and transportation problems that nursing college students experienced during the vaccination process. Therefore, administrative and financial support is needed for improving the vaccination rates of nursing students.

• Journal of Korea Trade
• /
• 제27권4호
• /
• pp.77-100
• /
• 2023

Purpose - Using the Model of Goal-Directed Behavior (MGB), this study identifies the critical factors that influence consumer intention to purchase an electric vehicle (EV). This study also provides differentiated policy implications to the Korean and Chinese governments and EV-related companies for the expansion of the EV market in both countries by comparing consumers' perceptions of EV purchase intentions. Design/methodology - Our extended MGB model adds to the standard model consideration of financial incentives, perceived risks, and environmental concerns. An online survey was conducted of Korean and Chinese consumers. Based on the collected responses, all tested hypotheses were verified using PLS-SEM (Partial Least Squares-Structural Equation Modeling). Differences in the path analysis results between Korea and China were compared and verified using Henseler's MGA (multi-group analysis), the parametric test, and the Welch-Satterthwaite test. Findings - The most critical factor that influences the intent to purchase an EV in consumers from both countries is personal desire. PBC and SN were identified as the critical factors that respectively increase personal desire in Korea and China. In addition, in Korea, among the three factors EC, FIP, and PR, environmental concerns were found to have the most significant impact on attitudes and purchase intention. In contrast, in China, economic factors (specifically financial incentives) had greater importance than environmental issues. Originality/value - This study has academic contributions in that it presents a new research model that includes financial incentive policies, environmental concerns, and perceived risk variables based on the MGB to explore consumers' purchase intentions. This study can also make a practical contribution in that it provides some meaningful implications to the governments and EV-related companies of both countries based on the differences in the analysis results of the Korean and Chinese markets.