• ETRI Journal
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• 제39권5호
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• pp.695-706
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• 2017

This paper presents a caching algorithm that offers better reconstructed data quality to the requesters than a probabilistic caching scheme while maintaining comparable network performance. It decides whether an incoming data packet must be cached based on the dynamic caching probability, which is adjusted according to the priorities of content carried by the data packet, the uncertainty of content popularities, and the records of cache events in the router. The adaptation of caching probability depends on the priorities of content, the multiplication factor adaptation, and the addition factor adaptation. The multiplication factor adaptation is computed from an instantaneous cache-hit ratio, whereas the addition factor adaptation relies on a multiplication factor, popularities of requested contents, a cache-hit ratio, and a cache-miss ratio. We evaluate the performance of the caching algorithm by comparing it with previous caching schemes in network simulation. The simulation results indicate that our proposed caching algorithm surpasses previous schemes in terms of data quality and is comparable in terms of network performance.

• 한국정보시스템학회지:정보시스템연구
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• 제29권3호
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• pp.53-75
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• 2020

Purpose Despite the continued rise in the popularity of mobile MMORPGs, the previous studies mainly focused on negative results of playing MMORPG such as violence and game addiction. In addition, previous studies that verified game play motives were not enough to explain user's fundamental motives for MMORPG play. To verify the positive role of playing MMORPG, this study focused on stress coping strategies on continued play MMORPG, and divided factors into two dimensions: escapism and coping with system. The purpose of this study is to comprehensively identify the discriminatory effects of each factor on users' self-control, and the effect of self-constrol and behavioral adapatation on continued use intention for MMORPG. Design/methodology/approach This study was designed to examine the structural relationships among MMORPG users' escapism, system coping, self-control, behavioral adaptation and continued use intention for MMORPG. Findings The results from this study are as follow. First, the participants' effect-based escapism had a positive impact on self-control, whereas cause-based escapism had a negative impact on self-control. Next, proactive coping and reactive coping for system problem had a positive impact on self-control. In addition, Self-control had a positive impact on behavioral adaptation and continued use intention for MMORPG. Lastly, the behavioral adaptation to MMORPG had a positive impact continued use intention. The results of our study can suggest the positive effects of coping strategy on users' self-control and behavioral adaptation by applying the theory of both escapism and coping with system. Based on our results, game companies should develop contents that can gratify users' coping motives and enhance self-control and behavioral adaptation.

• 동서간호학연구지
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• 제29권1호
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• pp.39-48
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• 2023

Purpose: This study aimed to identify the influences of parental neglect, national identity, and self-resiliency of multicultural adolescents on school adaptation. Methods: Participants are multicultural adolescents in the 4th year (2014) of the multicultural adolescents panel survey. Data were analyzed by descriptive statistics, independent t-test, ANOVA, pearson's correlation coefficient, and stepwise multiple regression analysis using SPSS 22.0 program. Results: Self-resiliency was the most influential factor on school adaptation of multicultural adolescents, followed by parental neglect, and national identity, mother's Korean reading ability, multicultural adolescents' speaking ability, city size, mother's education, and mother's speaking ability. Conclusion: Multicultural families who had an experience of parental neglect should be selected and those parents need to be educated about the appropriate parenting method to improve the school adaptation of multicultural adolescents. In addition, the school adaptation improvement program should be developed and provided to strengthen the national identity and self-resiliency of multicultural adolescents.

• 감성과학
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• 제23권3호
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• pp.19-36
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• 2020

본 연구는 D 대학을 중심으로 DEU-GRIT 검사를 활용하여 대학 신입생의 대학 생활 적응 특성을 분석하는 데 그 목적이 있다. 이를 위해, 대학 신입생의 성별과 전공 분야에 따른 대학 생활 적응 수준의 차이를 살펴보고, 대학 생활 적응의 중요한 영역인 학업, 사회, 정서, 진로 적응의 수준을 기반으로 군집화된 대학 신입생의 대학 생활 적응 특성을 살펴보았다. 그리고 DEU-GRIT 검사 규준을 바탕으로 대학 신입생 중 적응에 어려움을 겪는 하위 규준집단을 따로 분류하여 이들의 대학 생활 적응 특성도 살펴보았다. 그 결과, 정서 적응 수준에서 남학생이 여학생에 비해 높은 것으로 나타났으며, 학업 적응과 정서 적응 수준에서 과학기술 전공 분야 학생이 인문사회 전공 분야 학생에 비해 높은 것으로 나타났다. 또한, 대학 생활 적응의 4개 영역 수준을 기준으로 군집 분석을 한 결과, 군집 1은 모든 영역의 적응 수준이 높았지만, 군집 3은 모든 영역의 적응 수준이 낮은 것으로 나타났다. 그리고 군집 2는 정서 적응 수준이 높았지만, 군집 4는 정서 적응 수준이 낮은 것으로 나타났다. 한편, DEU-GRIT 검사의 하위 규준집단에서는 학업 적응과 사회 적응 수준이 남학생보다 여학생에게서 높았으며, 대학 생활 적응 전체 및 학업 적응과 정서 적응 수준이 인문사회 전공 분야 학생보다 과학기술 전공 분야 학생에게서 높은 것으로 나타났다. 또한, 하위 규준집단의 대학 생활 적응의 4개 영역 수준을 기준으로 군집 분석 한 결과, 하위 규준집단 군집 1은 정서 적응 수준이 높았으며, 하위 규준집단 군집 2는 정서 및 진로 적응 수준은 낮고 학업 및 사회 적응 수준은 높은 것으로 나타났다. 그리고 하위 규준집단 군집 3은 모든 영역 수준이 낮았으며, 하위 규준집단 군집 4는 사회 및 정서 적응 수준이 낮고 학업 및 진로 적응 수준이 높은 것으로 나타났다. 이는 대학 신입생의 사회 및 정서 적응 측면에서 성별에 따라 맞춤화된 심리상담 프로그램의 개입이 필요하며, 전공 분야에 따라서는 취업 전망에 대한 기대의 높고 낮음에 따른 상대적 정서 개입의 필요성을 시사한다. 또한, 하위 규준집단의 대학 생활에서 정서 및 사회 적응은 대학 생활 적응의 보호 요인으로 작용할 가능성이 있어 이에 대한 구체적인 개입 방안을 고민할 필요가 있음도 시사한다.

• Molecules and Cells
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• 제46권3호
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• pp.142-152
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• 2023

Nuclear factor erythroid 2-related factor 2 (Nrf2) mediates the cellular antioxidant response, allowing adaptation and survival under conditions of oxidative, electrophilic and inflammatory stress, and has a role in metabolism, inflammation and immunity. Activation of Nrf2 provides broad and long-lasting cytoprotection, and is often hijacked by cancer cells, allowing their survival under unfavorable conditions. Moreover, Nrf2 activation in established human tumors is associated with resistance to chemo-, radio-, and immunotherapies. In addition to cancer cells, Nrf2 activation can also occur in tumor-associated macrophages (TAMs) and facilitate an anti-inflammatory, immunosuppressive tumor immune microenvironment (TIME). Several cancer cell-derived metabolites, such as itaconate, L-kynurenine, lactic acid and hyaluronic acid, play an important role in modulating the TIME and tumor-TAMs crosstalk, and have been shown to activate Nrf2. The effects of Nrf2 in TIME are context-depended, and involve multiple mechanisms, including suppression of proinflammatory cytokines, increased expression of programmed cell death ligand 1 (PD-L1), macrophage colony-stimulating factor (M-CSF) and kynureninase, accelerated catabolism of cytotoxic labile heme, and facilitating the metabolic adaptation of TAMs. This understanding presents both challenges and opportunities for strategic targeting of Nrf2 in cancer.

• 대한불안의학회지
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• 제19권1호
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• pp.1-9
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• 2023

Objective : To translate and adapt the Social Appearance Anxiety Scale into Korean and validate the Korean version of the social appearance anxiety scale, which measures the fear and anxiety about being negatively evaluated by others based on one's overall appearance, including body shape. Methods : For item translation and adaptation, six bilingual translators participated in the process of forward-adaptation and back-adaptation. Data were collected from undergraduate students. The sample size is 105 for Study 1 and 212 for Study 2. Classical item discrimination and difficulty analyses, exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and reliability analysis were performed. Results : A unidimensional structure was found with a high internal consistency (Cronbach's α=0.95) and a high test-retest reliability (r=0.918). In addition, the concurrent validity was examined by correlations of the scale and several other scales measuring constructs related to social appearance anxiety. Conclusion : K-SAAS appears to be a reliable and valid scale for screening and assessing social appearance anxiety.

• 한국도로학회논문집
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• 제17권2호
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• pp.135-141
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• 2015

PURPOSES : While driving, drivers are usually limited in communicating with others except for using the horn. Excessive use of the horn may cause noise pollution, quarrels between drivers and pedestrians, damage, etc. This study developed a methodology for environmental adaptation and improvements of vehicle horns. METHODS: In this study, we performed a literature review of previous studies and related technologies regarding the overuse and damage of the horn. The proposed methodology employed the paired comparison method, as well as the semantic differential method. These methods can consider various vehicle horns, such as the Sport Utility Vehicle(SUV) Horn, Van Horn, and Buzzer. In addition, we conducted a factor analysis in order to provide a direction for improvement of future horns. This research provides a means of complimenting existing intellectual property related to vehicle horns. RESULTS: As a result, the most preferred of the selected horns were the Buzzer at 86.7%. In addition, based on the factor analysis, the horns could be classified into pleasantness and comfort factors. The results indicate a positive reaction for various vehicle horns. The horn type and size of the process control have been properly developed considering the position of the vehicle and the surrounding noise measurements. CONCLUSIONS : Based on the proposed methodology, public and private sectors can use fundamental data for reasonable traffic-noise control policies.

• 한국학교ㆍ지역보건교육학회지
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• 제16권1호
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• pp.1-14
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• 2015

Objectives: The purpose of this study was to examine the effects that the self-efficacy, self-elasticity, and major satisfaction of students majoring in dental hygiene would have on the adaptation to the campus life. Methods: The total 396 students were surveyed who majored in dental hygiene in universities located at Gyeongbuk and Gyeongnam from October 15, 2013 to October 30. The collected data were analyzed by using the SPSS 17.0 program, along with the One-Way ANOVA, correlation analysis, and multi-regression analysis. Results: The 'aptitude and interest' were found to be greatest factor among the motive for application among the factors of self-efficacy, self-elasticity, and major satisfaction of students, depending on general characteristics. The results of correlation analysis showed that the self-elasticity had a correlation of 0.741 and the adaptation to the study had a correlation of 0.420 in the self-efficacy, while the individual emotional adaptation, adaptation to university environment, and adaptation to the study had a correlation as high as over 0.4 in the self-elasticity(p<0.05). In addition, it was found that the adaptation to the campus life increased proportionally to the self-elasticity and major satisfaction(p<0.05). Conclusions: To increase the campus life adaptation of students majoring in dental hygiene, it is considered necessary to explore the measures that can improve the self-elasticity and overall major satisfaction.

• 가정과삶의질연구
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• 제11권1호
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• pp.119-133
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• 1993

Based on the Double ABCX model of family stress and adaptation this study was to investi-gate the intercorrelations among and the relative magnitutide of variables associated with diffe-rent levels of adaptation to conflict with mothers-in-law reported by daughter-in-law. Frequency of conflict was selected as a stressor(aA) Resource factor(bB) in this study was self-efficacy. Four types of blame(self-behavior self-character other people and impersonal world blame) were selected as perception factors(cC). The adaptation factors(xX) were the level of daughter-in-law's psychological well-being and marital adjustment. Data for this research were questionnaire responses from 151 daughters-in-law who lived in Seoul. The results of correlational analyses indicated that most variables were significantly correlated with each other. In addition results of the path analysis on daughter-in-law's psychological well-being indicated that higher scores on the psychological well-being were significantly associa-ted with(a) greater self-behavior blame for the conflict and (b) less ascription of blame to the impersonal world. Frequency of conflict influenced psychological well-being indirectly th-rough self-behavior blame and impersonal blame both of which were also found to mediate the effect of self-efficacy on the level of psychological well-being. However although all indepen-dent variables were significantly correlated with marital adjustment no variables had direct effects on marital adjustment.

• 디지털융복합연구
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• 제19권6호
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• pp.409-418
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• 2021

본 연구는 간호학과 신입생의 셀프리더십, 인성, 회복탄력성이 대학생활적응에 미치는 영향을 파악하고자 실시하였다. 연구대상자는 C시 지역 간호학과 신입생 190명이었고, 자료수집 기간은 2020년 12월 1일부터 14일까지였다. 수집된 자료는 기술통계, t-tset, ANOVA, pearson correlation과 multiple regression으로 분석하였다. 그 결과 대학생활적응에 유의한 영향을 미치는 요인은 셀프리더십, 인성, 회복탄력성, 학교생활만족도, 친구 수였으며, 대학생활적응에 가장 크게 영향을 미치는 요인은 인성(β=.659, p<.001)이었고, 셀프리더십(β=.274, p=.001), 친구 수(β=.258, p=.003)순이었다. 모형에 대한 설명력은 51.2%이었다(F=40.72, p<.001). 또한 셀프리더십, 인성, 회복탄력성과 대학생활적응은 높은 양의 상관관계를 보였다. 그러므로 간호학과 신입생의 인성과 셀프리더십을 향상시켜 대학생활적응을 도울 수 있는 프로그램의 적용이 필요하다.