• 한국정보시스템학회지:정보시스템연구
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• 제30권2호
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• pp.29-56
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• 2021

Purpose Cyber deviance of adolescents has become a serious social problem. With a widespread use of smartphones, incidents of cyber deviance have increased in Korea and both quantitative and qualitative damages such as suicide and depression are increasing. Research has been conducted to understand diverse factors that explain adolescents' delinquency in cyber space. However, most previous studies have focused on a single theory or perspective. Therefore, this study aims to comprehensively analyze motivations of juvenile cyber deviance and to develop a predictive model for delinquent adolescents by integrating four different theories on cyber deviance. Design/methodology/approach By using data from Korean Children & Youth Panel Survey 2010, this study extracts 27 potential factors for cyber deivance based on four background theories including general strain, social learning, social bonding, and routine activity theories. Then this study employs econometric analysis to empirically assess the impact of potential factors and utilizes a machine learning approach to predict the likelihood of cyber deviance by adolescents. Findings This study found that general strain factors as well as social learning factors have positive effects on cyber deviance. Routine activity-related factors such as real-life delinquent behaviors and online activities also positively influence the likelihood of cyber diviance. On the other hand, social bonding factors such as community commitment and attachment to community lessen the likelihood of cyber deviance while social factors related to school activities are found to have positive impacts on cyber deviance. This study also found a predictive model using a deep learning algorithm indicates the highest prediction performance. This study contributes to the prevention of cyber deviance of teenagers in practice by understanding motivations for adolescents' delinquency and predicting potential cyber deviants.

• 한국게임학회 논문지
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• 제21권1호
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• pp.149-160
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• 2021

최근 게임 시장에서는 플레이밍(flaming), 트롤링(trolling) 및 불법 프로그램 활용과 같은 비도덕적 게임행동에 대한 우려가 급증하고 있다. 이러한 게임행동이 게임산업에 미치는 부정적 영향이 적지 않지만, 관련 연구는 여전히 부족한 상황이다. 본고는 게임추론 가설을 통해 비도덕적 게임 행동 양상을 정리하고, 연관요인으로 이용자의 게임규칙 인식과 공정성 지각, 사회적 정체성 및 도덕적 정체성, 도덕적 포지셔닝 등에 대해 209명의 <리그 오브 레전드> 이용자 데이터를 분석하였다. 분석 결과, 도덕적 정체성과 형식적 규칙 인지는 비도덕적 게임 행동에 부적 영향력을 미친 반면, 도덕적 포지셔닝과 사회정체성은 비도덕적 게임 행동에 정적 영향을 미치는 것으로 나타났다. 특히, 도덕적 정체성과 도덕적 포지셔닝은 상호작용 효과를 보였다.

• 디지털융복합연구
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• 제19권3호
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• pp.25-35
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• 2021

인터넷과 연결 가능한 기기만 있다면 어디서든 외국의 영상매체를 시청할 수 있게 되었다. Netflix와 Youtube는 대표적인 영상 플랫폼이고 많은 사람들이 이용하고 있기도 하다. 그러다보니 외국어를 알지 못하는 경우, 전적으로 자막에 의존할 수밖에 없다. 이에 본 연구에서는 두 개의 인기 플랫폼에서 양질의 번역을 제공하고 있는지 알아보기 위해 두 곳에서 동시에 상영하고 있는 영화를 골라 한국어 번역본을 가지고 비교해보고 더 나은 방향과 문제점을 도출하였다. 그 결과, 좋은 번역이란 번역가가 시청자들이 집중을 할 수 있게 적절한 생략과 자세한 설명을 한정된 시간과 공간 안에 할 수 있어야 한다. 작업물을 심도 있게 연구하고 충분한 시간을 들여 작업에 임한다면 번역의 퀼리티는 확연히 올라갈 것이다. 마지막으로 본 연구는 영상번역에 대한 가이드라인 없이 싼 단가에 최소한의 시간을 들여 제작한 영상물들의 오역을 통해 아직 과거에 머물고 있는 영상번역 시장 활성화에 기여하였다.

• 지식경영연구
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• 제22권4호
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• pp.41-70
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• 2021

소셜 미디어의 사용은 참여자들 간의 지식공유 활동, 사회 네트워크 형성, 다양한 사람들과의 소통기능 등과 같은 다양한 장점을 갖고 있다. 그러나 이러한 장점에도 불구하고 프라이버시와 사생활 침해, 피싱공격, 심리적 스트레스 등 다양한 부작용 또한 야기되고 있는데, 그 중 특히 소셜 네트워크 스트레스라는 새로운 개념의 스트레스가 주목받고 있다. 본 연구는 소셜 네트워크 스트레스의 개념을 정립하고, 소셜 미디어 환경에서 소셜 네트워크 스트레스가 전환행동에 미치는 영향을 살펴보려 한다. 이를 위해 본 연구에서는 소셜 네트워크 스트레스의 선행요인 및 결과요인으로 구성된 연구모델을 제시하고, 구조방정식 모델을 기반으로 하는 LISREL 8.7을 이용하여 연구모델을 실증적으로 검증하였다. 실증분석 결과, 소셜 미디어상에서 자기표출과 지식공유 활동은 소셜 네트워크 스트레스에 유의한 긍정적 영향을 주었으며 이는 소셜 미디어 전환의도에 유의한 영향을 미치는 것으로 나타났다. 끝으로 본 연구의 이론적, 실무적 시사점을 논의하였고 연구가 지닌 한계점을 제시하였다.

• 창의정보문화연구
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• 제7권4호
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• pp.235-242
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• 2021

스마트폰은 다양한 고성능의 센서가 포함되어 있으며 센서에서 발생하는 데이터를 이용하여 인간의 활동을 분석하는 연구가 진행되어왔다. 이러한 인간 활동 인식은 생활 패턴 분석, 운동량 측정, 위험 상황 감지 등 다양한 분야에서 활용될 수 있다. 그러나 기존 연구의 경우 인간의 기본 행동의 인식에 초점을 두거나 효율적인 배터리 사용을 위해 최적의 인식 결과를 내는 방법을 연구하는 경우가 많았다. 본 논문에서는 기본 행동에 건강 관리 목적으로 실내 및 실외에서 행해지는 운동 동작을 총 10가지로 정의하여 인식하도록 하였다. 이를 위해 가속도, 자이로 및 위치 센서의 값을 수집하고 데이터 전처리 과정을 거치고, 활동을 인식하기 위해서 SVM 모델 외에 안정적인 성능을 가진 앙상블 기반의 랜덤 포레스트, 그라디언트 부스팅 모델을 결합하여 투표 기반으로 인식 결과를 결정하였다. 그 결과 높은 정확도로 정의된 활동의 인식이 가능하였으며 특히 유사한 종류의 실내 및 실외 운동 활동의 분류가 가능하였다.

• 한국식생활문화학회지
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• 제37권5호
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• pp.385-409
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• 2022

This study investigated the trend of research on 'Food science and Nutrition' in previously published papers in the Journal of Korean Society of Food Culture (JKSFC) from 2000 to 2021. Total number of published papers in this category in the JKSFC was 693 which we classified into 7 main categories and 40 subcategories. Of these, 256 articles were on 'experimental cooking' which was the most studied field among 7 main categories. There was a total of 19 published papers under the category of 'microbiology and fermentation'. A total of 133 articles were published on 'functional foods' and provided essential data for discovering new materials under the theme of various physiological active functions of food materials. Furthermore, 107 articles were included in 'food processing and storage', which provided integrated knowledge of economy, stability and practicality based on various technologies. A total of 144 articles was included in the category of 'nutrition'. Under the category of 'nutrition', the most actively studied topic was 'eating behaviors and dietary habits,' and the trending topic was 'use of healthcare big data.' In conclusion, this review would provide trends of various categories of food science and nutrition area for recent 21 years and suggest directions for future research.

• 대한지역사회영양학회지
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• 제27권5호
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• pp.397-405
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• 2022

Objectives: This study examines the effect on the frequency of ramyeon consumption based on who checks nutrition labels and on the levels of sodium-related nutrition knowledge among middle school students in the Incheon area. Methods: Self-administered questionnaires were completed by 359 students (143 males and 216 females) from May to October 2021. General information as well as ramyeon-eating behaviors were surveyed. The frequency of ramyeon consumption was compared depending on who checks nutrition labels and on the amount of sodium-related nutrition knowledge students have. Both 𝛘² tests and t-tests were conducted for categorical and mean comparisons. Results: Regarding the consumption of ramyeon, 46% of the students replied that they eat it alone at home. The criteria for choosing the kind of ramyeon to eat were taste (79.4%), price (9.2%), brand and new products (4.5%), nutrition (2.2%), weight control (2.2%), and other factors (2.5%). When purchasing ramyeon, more students replied that they did not read nutrition labels (66.0%) compared to those who did read labels (34.0%). Answers to questions on sodium-related nutrition earned an average of 6.84 out of nine points (males, 6.72 points, females, 6.91 points, ns). The average frequency of ramyeon consumption was 1.67 times per week (males, 1.66, females, 1.68, ns). The frequency of ramyeon consumption by students who checked nutrition labels was lower than for students who did not check labels (1.44 times per week vs. 1.79 times per week, P < 0.05). Conclusions: Students who checked nutrition labels reported a lower frequency of ramyeon consumption than students who did not check them. Education on checking nutrition labels may reduce the consumption of processed foods such as ramyeon and may lead to making healthy choices when purchasing food.

• International Journal of Internet, Broadcasting and Communication
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• 제13권2호
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• pp.145-155
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• 2021

With the recent rapid improvement in the standards of life and westernization of dietary lifestyles, the consumption of high-calorie diets such as high-fat and high-protein red meat and instant foods has increased, while less vegetables containing dietary fiber are consumed. In addition to that, stress, erroneous dietary behaviors, and contaminated environments are linked to the risk of developing ulcerative colitis, which is on the rise. Another cause of ulcerative colitis is that involve laxative abuse, including repeated, frequent use of laxatives, and include such conditions as deteriorated bowel function, irritable bowel syndrome, diarrhea, intestinal inflammation, etc. The present study aimed to investigate the comparative evaluation of pharmacological efficacy between sulfasalazine alone and combination with herbal medicine on dextran sodium sulfate (DSS)-induced UC in mice. Balb/c mice received 5% DSS in drinking water for 7 days to induce colitis. Animals were divided into five groups (n = 9): group I-normal group, group II-DSS control group, group III-DSS + sulfasalazine (30 mg/kg), group IV-DSS + sulfasalazine (60 mg/kg), group V-DSS + sulfasalazine (30 mg/kg) + Radish Extract mixture (30 mg /kg) (SRE). DSS-treated mice developed symptoms similar to those of human UC, such as severe bloody diarrhea and weight loss. SRE supplementation, as well as sulfasalazine, suppressed colonic length and mucosal inflammatory infiltration. In addition, SRE treatment significantly reduced the expression of pro-inflammatory signaling molecules through suppression both mitogen-activated protein kinases (MAPK) and nuclear factor-kappa B (NF-κB) signaling pathways, and prevented the apoptosis of colon. Moreover, SRE administration significantly led to the up-regulation of antioxidant enzyme including SOD and Catalase. This is the first report that Radish extract mixture combined with sulfasalazine protects against experimental UC via the inhibition of both inflammation and apoptosis, very similar to the standard-of-care sulfasalazine.

• 한국식품영양학회지
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• 제35권6호
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• pp.481-490
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• 2022

The influence of the food value consumption type of MZ generation on food choice attribute and sustainable food consumption behavior was studied using structural equation modeling. A survey was conducted on April 11~17, 2022, among panels aged 20 to 39. A total of 350 valid replicates (100%) were analyzed using statistical program SPSS The validity of the measurement instrument was verified through exploratory factor analysis and confirmatory factor analysis. The data reliability was confirmed using Cronbach's alpha coefficient. The hypothesis was verified by performing path analysis through structural equation modeling using AMOS. Regarding the influence of food choice characteristics on sustainable food consumption behavior, health has a significant positive (+) effect on the selection consumption behavior of certified food and local food. Among food value consumption categories social value consumption has a significant negative (-) influence on the consumption behavior of certified food and the choice of local food. Ethical value consumption has a significant positive (+) influence on the selection consumption behavior of certified food and local food. This study is significant because it has identified sustainable food consumption behaviors that domestic consumers can adopt daily. It can use as baseline data for preparing political and institutional measures.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권4호
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• pp.1392-1413
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• 2022

In order to meet the rapid development of the unmanned aerial vehicle (UAV) communication needs, cooperative spectrum sensing (CSS) helps to identify unused spectrum for the primary users (PU). However, multi-UAV mode (MUM) requires the large communication resource in a cognitive UAV network, resulting in a severe decline of spectrum efficiency (SE) and energy efficiency (EE) and increase of energy consumption (EC). On this account, we extend the traditional 2D spectrum space to 3D spectrum space for the UAV network scenario and enable UAVs to proceed with spectrum sensing behaviors in this paper, and propose a novel multi-slot mode (MSM), in which the sensing slot is divided into multiple mini-slots within a UAV. Then, the CSS process is developed into a composite hypothesis testing problem. Furthermore, to improve SE and EE and reduce EC, we use the sequential detection to make a global decision about the PU channel status. Based on this, we also consider a truncation scenario of the sequential detection under the sensing delay constraint, and further derive a closed-form performance expression, in terms of the CSS performance and cooperative efficiency. At last, the simulation results verify that the performance and cooperative efficiency of MSM outperforms that of the traditional MUM in a low EC.